JP2023048087A - Rotary electric machine - Google Patents

Abstract

To provide a rotary electric machine that can increase a heat dissipation effect.SOLUTION: A motor device 60 has a motor housing 70, a rear frame 370, and a motor seal part 402. The motor seal part 402 is inserted between the motor housing 70 and the rear frame 370 and closes the gap between the motor housing 70 and the rear frame 370. The motor seal part 402 is inserted and held between a motor seal holding part 78 and a rear holding part 376. The motor seal holding part 78 is included in the motor housing 70. The rear holding part 376 is included in the rear frame 370. A motor outer peripheral surface 70a and a rear outer peripheral surface 370a are arranged continuously in the axial direction AD. The motor outer peripheral surface 70a is provided on the outside in the radial direction of the motor seal holding part 78.SELECTED DRAWING: Figure 132

Description

The disclosure in this specification relates to a rotating electric machine.

Patent Document 1 describes an axial gap type motor. In an axial gap type motor, a rotor and a stator are arranged in the axial direction. In this motor, a rotor and a stator are housed in a motor housing.

JP 2016-96705 A

However, in Patent Document 1, there is a concern that the heat dissipation effect of the motor may be insufficient.

A main object of the present disclosure is to provide a rotating electric machine capable of enhancing the heat dissipation effect.

The multiple aspects disclosed in this specification employ different technical means to achieve their respective objectives. In addition, the symbols in parentheses described in the claims and this section are an example showing the correspondence relationship with the specific means described in the embodiment described later as one aspect, and limit the technical scope isn't it.

In order to achieve the above object, the disclosed first aspect includes:
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiating fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat. and is fixed to fixed objects (370, 90, 830) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
a seal holding part (78, 826) provided on the outer peripheral wall of the electric machine, which sandwiches and holds the seal member (402, 828) between the fixing target and the fixing target when the fixing target is fixed to the electric housing;
with
The outer peripheral surface of the electric machine extends in the axial direction together with the target outer peripheral surface (370a, 90a, 832a), which is the outer peripheral surface of the fixed target, in a state where the fixing target is fixed to the electric housing. The rotary electric machine is provided outside the seal holding portion in the radial direction (RD) of the rotation axis so as to be continuously arranged.

According to the first aspect, the outer peripheral surface of the electric machine is provided so as to be continuously aligned in the axial direction with the outer peripheral surface of the target in a state where the fixing target is fixed to the housing of the electric machine. With this configuration, it is difficult for the gas flow in the axial direction to be disturbed by passing through the boundary between the outer peripheral surface of the electric machine and the target outer peripheral surface. Furthermore, the outer peripheral surface of the electric machine is provided outside the seal holding portion in the radial direction. With this configuration, it is difficult for the gas flowing in the axial direction to pass through the seal holding portion to disturb the flow of the gas. Therefore, it is possible to prevent the heat radiation effect of the radiation fins from being reduced due to, for example, a decrease in the amount of gas flowing along the radiation fins due to turbulence in the flow. Therefore, the heat dissipation effect of the rotary electric machine can be enhanced.

A second aspect is
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiating fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat. and is fixed to a fixed object (90) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
with
a seal holding part (845) provided on the outer peripheral wall of the electric machine and sandwiching the seal member (828) between the fixing target and the fixing target when the fixing target is fixed to the electric housing;
The outer peripheral surface of the electric machine, together with the target outer peripheral surface (90a), which is the outer peripheral surface of the fixed target, is in a state in which the fixed target is fixed to the electric housing and an air current (Fb4) flowing in the axial direction from the fixed target toward the electric housing is generated. The rotary electric machine is provided radially outside the seal holding portion so as to extend in the axial direction and to be spaced inwardly from the target outer peripheral surface in the radial direction (RD) of the rotation axis.

According to the second aspect, the outer peripheral surface of the electric machine is provided so as to be spaced radially inward from the target outer peripheral surface while the fixing target is fixed to the electric machine housing. With this configuration, it is possible to prevent the airflow axially flowing from the fixing target toward the electric machine housing from hitting the stepped surface formed at the boundary between the outer peripheral surface of the electric machine and the target outer peripheral surface. Therefore, even if a stepped surface exists at the boundary between the outer peripheral surface of the electric machine and the target outer peripheral surface, the airflow is less likely to be disturbed by the stepped surface. Therefore, as in the first aspect, the heat radiation effect of the rotary electric machine can be enhanced.

A third aspect is
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiating fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat. and is fixed to a fixed object (90) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
with
a seal holding part (78) provided on the outer peripheral wall of the electric machine and sandwiching the seal member (828) between the fixing target and the fixing target when the fixing target is fixed to the electric housing;
The outer peripheral surface of the electric machine, together with the target outer peripheral surface (90a), which is the outer peripheral surface of the fixed target, is in a state in which the fixed target is fixed to the electric housing and an air flow (Fb5) flowing in the axial direction from the electric machine housing toward the fixed target is generated. The rotary electric machine is provided radially outside the seal holding portion so as to extend in the axial direction and to be separated from the target outer peripheral surface in the radial direction (RD) of the rotation axis.

According to the third aspect, the outer peripheral surface of the electric machine is provided so as to be separated radially outward from the target outer peripheral surface while the fixing target is fixed to the electric machine housing. With this configuration, it is possible to prevent the air current flowing in the axial direction from the housing of the electric machine toward the object to be fixed from hitting the stepped surface facing the side of the object to be fixed between the outer peripheral surface of the electric machine and the outer peripheral surface of the target. For this reason, it is less likely that the airflow will be disturbed by hitting the stepped surface facing the fixed object side. Therefore, as in the first aspect, the heat radiation effect of the rotary electric machine can be enhanced.

The figure which shows the structure of the drive system in 1st Embodiment. FIG. 2 is a front view of the motor device unit; FIG. 2 is a longitudinal sectional view of the motor device unit; FIG. 2 is an exploded perspective view of the motor device unit; The perspective view of a motor apparatus. FIG. 2 is a longitudinal sectional view of the motor device; The top view of the motor apparatus in the structure group Aa. FIG. 2 is a longitudinal sectional view of the motor device; The top view of an electric power busbar. FIG. 2 is a plan view of a stator showing the configuration of a coil unit; The perspective view of a neutral point unit. FIG. 4 is a longitudinal sectional view of the rotor and shaft in the configuration group Ab; A perspective view of a coil wire. FIG. 4 is a plan view of the stator and motor housing in the configuration group Ac; The perspective view of a neutral point unit. 3 is a perspective view of the motor device in the configuration group Ad; FIG. The top view of a motor apparatus. FIG. 4 is a vertical cross-sectional view around a relay terminal in the motor device; FIG. 2 is a plan view of the motor device in the configuration group Ae; FIG. 4 is a vertical cross-sectional view around a relay terminal in the motor device in the configuration group Af; The top view of a motor apparatus. FIG. 4 is a longitudinal sectional view of the motor device in the configuration group Ag; The top view of a motor apparatus. FIG. 2 is a longitudinal sectional view of a rotor and a shaft in structural group Ba; The top view of the rotor seen from the rotor 1st surface side. The top view of the rotor seen from the rotor 2nd surface side. The figure which shows the arrangement|sequence of the magnet in a motor. FIG. 4 is a vertical cross-sectional view of the rotor and shaft in the configuration group Bb; FIG. 4 is a vertical cross-sectional view of the periphery of magnets in the rotor. FIG. 4 is a vertical cross-sectional perspective view of the periphery of magnets in the rotor. The top view of the rotor seen from the rotor 1st surface side. The top view of a magnet unit. FIG. 10 is a vertical cross-sectional perspective view of the magnet periphery of the rotor in the configuration group Bc; The top view of an inclined magnet unit and a parallel magnet unit. The top view of the rotor seen from the rotor 1st surface side. FIG. 4 is a vertical cross-sectional view of the rotor and shaft in component group Bd; The top view of the rotor seen from the rotor 2nd surface side. The top view of the rotor seen from the rotor 1st surface side. A perspective view of a shaft. FIG. 4 is a longitudinal sectional view of the rotor and shaft in the structural group Be; FIG. 3 is a vertical cross-sectional perspective view of a first rotor and a second rotor; FIG. 4 is a longitudinal sectional view of the rotor and shaft in the structural group Bf; The figure for demonstrating the positional relationship of a 1st holder fixing device and a 2nd holder fixing device. FIG. 3 is a perspective view of the motor viewed from the first rotor side; A plan view of the shaft. FIG. 4 is a longitudinal cross-sectional perspective view of a motor housing and a coil protection portion in the configuration group Ca; FIG. 3 is a vertical cross-sectional perspective view of the motor housing; FIG. 4 is a schematic vertical cross-sectional view of a motor housing and a coil protector; FIG. 4 is a schematic cross-sectional view of a motor housing and a coil protector; FIG. 4 is a vertical cross-sectional perspective view of the motor housing in the configuration group Cb; FIG. 10 is a longitudinal sectional view around a grommet in the motor device in the configuration group Cc; FIG. 4 is a vertical cross-sectional perspective view of a motor housing and a coil protection portion; FIG. 3 is a vertical cross-sectional perspective view of the motor housing; FIG. 4 is a perspective view of a core unit in the configuration group Cd; FIG. 4 is a perspective view of a core unit in the configuration group Ce; FIG. 4 is a vertical cross-sectional perspective view of a motor housing and a coil protection portion; 4 is a perspective view of a core unit in the configuration group Cf; FIG. A perspective view of a core. Cross-sectional view of the core. 4 is a perspective view of a core-forming plate; FIG. FIG. 4 is a perspective view of a core unit in the configuration group Cg; The perspective view of the core unit seen from the flange recessed part side. The side view of the core unit seen from the flange concave portion side. FIG. 4 is a front view of the core unit as seen from the inside in the radial direction; The perspective view of a neutral point unit. FIG. 4 is a vertical cross-sectional view of a motor device unit in configuration group Da; The top view of a stator and a motor housing. FIG. 4 is a vertical cross-sectional view of the rotor and stator in the configuration group Db; FIG. 69 is a perspective view of the shaft from the underside of FIG. 68; FIG. 69 is a plan view of the shaft seen from the underside of FIG. 68; Front view of the shaft. LXXII-LXXII line sectional view of FIG. FIG. 4 is a longitudinal sectional view of a rotor and a stator in component group Dc; The top view of the rotor seen from the rotor 2nd surface side. FIG. 3 is a plan view of the motor device in the configuration group Dd; The perspective view of a neutral point unit. FIG. 2 is a plan view of a motor device in structural group De; FIG. 3 is a perspective view of the motor device in the configuration group Df; The top view of a motor housing and a stator. The top view which looked at the motor housing from the 2nd rotor side. 3 is a perspective view of the motor device in the configuration group Dg; FIG. The top view which looked at the motor apparatus from the drive-frame side. FIG. 2 is a longitudinal sectional view of the motor device unit; FIG. 4 is a longitudinal sectional view around a grommet in the motor device in the configuration group E; FIG. 4 is a vertical cross-sectional perspective view of a motor housing and a coil protection portion; FIG. 2 is an enlarged perspective view of the periphery of a grommet in the motor device; FIG. 4 is a schematic vertical cross-sectional view showing the positional relationship between the outer grommet portion and the outer periphery lead portion; FIG. 2 is an enlarged perspective view of the periphery of a grommet in the motor device; FIG. 4 is a vertical cross-sectional view around a rotary rib in the motor device in the configuration group F; The top view of the rotor seen from the rotor 2nd surface side. FIG. 4 is a vertical cross-sectional view of the periphery of magnets in the rotor. The top view of a motor apparatus. FIG. 2 is a schematic vertical cross-sectional view around a rotary rib in the motor device; FIG. 2 is a schematic vertical cross-sectional view around a rotary rib in the motor device; FIG. 4 is a vertical cross-sectional view around a fixed block in the motor device in the configuration group G; FIG. 4 is a longitudinal sectional view around a fixed block in the rotor; The top view of the rotor which looked at the rotor 1st surface. 4 is a schematic cross-sectional view of the rotor in a direction orthogonal to the circumferential direction; FIG. The perspective view of a magnet holder. The perspective view of a fixed block. The top view of the inclined magnet unit and the parallel magnet unit which looked at the 1st unit surface. The top view of the inclined magnet unit and the parallel magnet unit which looked at the 2nd unit surface. FIG. 4 is a plan view of the periphery of the magnet protrusion in the magnet holder; FIG. 10 is a longitudinal sectional view around the grommet and the coil protection portion in the motor device in the configuration group H; FIG. 4 is a vertical cross-sectional view around a grommet in the motor device; FIG. 4 is a schematic vertical cross-sectional view showing the configuration of a power lead wire, a grommet, and a coil protection portion; Front view of the grommet. A side view of a grommet. The figure which looked at the grommet periphery in the motor apparatus from the radial inside. FIG. 2 shows a longitudinal section of the rotor and shaft in configuration group I; FIG. 4 is a diagram for explaining a shaft base material; FIG. 4 is a vertical cross-sectional view of the motor device unit in the configuration group K; FIG. 4 is a vertical cross-sectional view of the resolver periphery in the motor device; FIG. 4 is a plan view of a tilt magnet unit and a parallel magnet unit in configuration group L; The figure which shows the arrangement|sequence of the magnet in a motor. The top view of a tilt magnet unit. The side view of a tilt magnet unit. FIG. 4 is a vertical cross-sectional view of the periphery of magnets in the rotor. The figure which shows the procedure of the manufacturing process of a rotor. The figure for demonstrating a sintering process and a strip process. The figure for demonstrating a magnet base material process. The figure for demonstrating a magnet side process. The figure for demonstrating a unit base material process. The top view for demonstrating a 1st shaping process and a 2nd shaping process. The side view for demonstrating a 1st shaping process and a 2nd shaping process. FIG. 4 is a longitudinal sectional view around the axial gap in the motor device in the configuration group M; FIG. 2 is a schematic vertical cross-sectional view around an axial gap in the motor device; The top view of the rotor seen from the rotor 2nd surface side. A perspective view of a shaft. FIG. 3 is a perspective view of the drive frame viewed from the drive rib side; FIG. 4 is a longitudinal sectional view of the motor device unit in the configuration group N; FIG. 2 is a schematic vertical cross-sectional view around a motor seal portion in the motor device; FIG. 11 is a schematic vertical cross-sectional view showing the positional relationship between the outer grommet portion and the outer peripheral lead portion in the configuration group E and the third embodiment; The schematic longitudinal cross-sectional view of the grommet periphery in the motor apparatus in 4th Embodiment. The schematic longitudinal cross-sectional view of the grommet periphery in the motor apparatus in 5th Embodiment. FIG. 11 is a schematic vertical cross-sectional view around a grommet in a motor device according to a sixth embodiment; FIG. 11 is a schematic vertical cross-sectional view around a grommet in a motor device according to a seventh embodiment; FIG. 11 is a schematic vertical cross-sectional view of the periphery of the rotary rib in the motor device in the configuration group F and the eighth embodiment; FIG. 11 is a schematic longitudinal sectional view around a rotary rib in a motor device according to a ninth embodiment; FIG. 12 is a schematic longitudinal sectional view around a rotary rib in a motor device according to a tenth embodiment; FIG. 12 is a schematic longitudinal sectional view around a rotary rib in a motor device according to an eleventh embodiment; FIG. 21 is a schematic vertical cross-sectional view around a fixed block in a rotor in a twelfth embodiment; FIG. 21 is a plan view of the rotor viewed from the rotor first surface in the thirteenth embodiment; FIG. 21 is a plan view of the rotor viewed from the rotor first surface in the fourteenth embodiment; FIG. 21 is a front view of a grommet in configuration group H and a fifteenth embodiment; A side view of a grommet. FIG. 12 is a diagram for explaining the first base material and the second base material in the configuration group I and the sixteenth embodiment; FIG. 20 is an enlarged plan view of the periphery of the displacement restricting portion in the motor device in the configuration group J and the seventeenth embodiment; FIG. 4 is a schematic vertical cross-sectional view of the periphery of a displacement restricting portion in the motor device; FIG. 21 is an enlarged plan view of the periphery of a displacement restricting portion in a motor device according to an eighteenth embodiment; FIG. 4 is a schematic vertical cross-sectional view of the periphery of a displacement restricting portion in the motor device; FIG. 21 is an enlarged plan view of the periphery of a displacement restricting portion in a motor device according to a nineteenth embodiment; FIG. 4 is a schematic vertical cross-sectional view of the periphery of a displacement restricting portion in the motor device; FIG. 14 is a plan view of the gradient magnet unit in the configuration group L and the twentieth embodiment; The side view of a tilt magnet unit. FIG. 4 is a vertical cross-sectional view of the periphery of magnets in the rotor. FIG. 21 is a plan view of a tilt magnet unit in the twenty-first embodiment; The figure which shows the arrangement|sequence of the magnet in 22nd Embodiment. FIG. 21 is a plan view of a tilt magnet unit in the twenty-third embodiment; The figure which shows the arrangement|sequence of a magnet. FIG. 11 is a schematic vertical cross-sectional view around the motor seal portion in the motor device in the configuration group N and the twenty-fourth embodiment; FIG. 20 is a schematic vertical cross-sectional view around a motor seal portion in a motor device according to a twenty-fifth embodiment; FIG. 21 is a schematic vertical cross-sectional view around a housing seal portion in a motor device according to a twenty-sixth embodiment; FIG. 21 is a schematic vertical cross-sectional view around a housing seal portion in a motor device according to a twenty-seventh embodiment; FIG. 20 is a schematic vertical cross-sectional view around a housing seal portion in a motor device according to a twenty-eighth embodiment; FIG. 21 is a schematic vertical cross-sectional view around a motor seal portion in a motor device according to a twenty-ninth embodiment; FIG. 21 is a schematic vertical cross-sectional view around a housing seal portion in a motor device according to a thirtieth embodiment; FIG. 21 is a schematic vertical cross-sectional view around a housing seal portion in a motor device according to a thirty-first embodiment;

A plurality of modes for carrying out the present disclosure will be described below with reference to the drawings. In each form, the same reference numerals may be given to the parts corresponding to the matters described in the preceding form, and overlapping explanations may be omitted. When only a part of the configuration is described in each form, the previously described other forms can be applied to other parts of the configuration. Not only combinations of parts that are explicitly stated that combinations are possible in each embodiment, but also partial combinations of embodiments even if they are not explicitly stated unless there is a particular problem with the combination. is also possible.

<First embodiment>
A drive system 30 shown in FIG. 1 is mounted on a moving object such as a vehicle or an aircraft. Vehicles equipped with the drive system 30 include, for example, electric vehicles (EV), hybrid vehicles (HV), and fuel cell vehicles. Air vehicles include aircraft such as vertical takeoff and landing aircraft, rotary wing aircraft and fixed wing aircraft. There is eVTOL as a vertical take-off and landing aircraft. eVTOL is an electric vertical take-off and landing aircraft, and is an abbreviation for electric Vertical Take-Off and Landing aircraft.

The drive system 30 is a system that drives the mobile object to move. If the mobile object is a vehicle, the drive system 30 drives the vehicle, and if the mobile object is an aircraft, the drive system 30 drives the aircraft to fly.

The drive system 30 has a battery 31 and a motor device unit 50 . Battery 31 is electrically connected to motor device unit 50 . The battery 31 is a power supply section that supplies power to the motor device unit 50 and corresponds to a power supply section. The battery 31 is a DC voltage source that applies DC voltage to the motor device unit 50 . The battery 31 has a rechargeable secondary battery. Such secondary batteries include lithium-ion batteries, nickel-metal hydride batteries, and the like. As the power supply unit, in addition to or instead of the battery 31, a fuel cell, a generator, or the like may be used.

The motor device unit 50 is a device that drives to move the moving body, and corresponds to a driving device. The motor device unit 50 has a motor device 60 and an inverter device 80 . The motor device 60 has a motor 61 . The inverter device 80 has an inverter 81 . Battery 31 is electrically connected to motor 61 via inverter 81 . Electric power is supplied to the motor 61 from the battery 31 through the inverter 81 . Motor 61 is driven according to the voltage and current supplied from inverter 81 .

The motor 61 is a multi-phase AC motor. The motor 61 is, for example, a three-phase AC motor, and has U-phase, V-phase, and W-phase. The motor 61 is a movement drive source for moving the moving body, and functions as an electric motor. A brushless motor, for example, is used as the motor 61 . The motor 61 functions as a generator during regeneration. Note that the motor 61 corresponds to a rotating electric machine, and the motor device unit 50 corresponds to a rotating electric machine unit.

The motor 61 has a multi-phase coil 211 . The coil 211 is a winding and forms an armature. A coil 211 is provided for each of the U-phase, V-phase, and W-phase. In the motor 61, multi-phase coils 211 are star-connected. A star connection is sometimes referred to as a Y connection. Motor 61 has a neutral point 65 . The multi-phase coils 211 are connected to each other at a neutral point 65 .

The inverter 81 drives the motor 61 by converting electric power supplied to the motor 61 . The inverter 81 converts the power supplied to the motor 61 from direct current to alternating current. The inverter 81 is a power converter that converts power. The inverter 81 is a multi-phase power converter, and performs power conversion for each of the multi-phases. The inverter 81 is, for example, a three-phase inverter, and performs power conversion for each of U-phase, V-phase, and W-phase.

The inverter device 80 has a P line 141 and an N line 142 . P line 141 and N line 142 electrically connect battery 31 and inverter 81 . P line 141 is electrically connected to the positive electrode of battery 31 . N line 142 is electrically connected to the negative electrode of battery 31 . In the battery 31, the positive electrode is the electrode on the high potential side, and the negative electrode is the electrode on the low potential side. The P line 141 and the N line 142 are power lines for supplying power. The P line 141 is a power line on the high potential side and is sometimes called a high potential line. The N line 142 is a power line on the low potential side and is sometimes referred to as a low potential line.

Motor device unit 50 has an output line 143 . The output line 143 is a power line for supplying power. The output line 143 electrically connects the motor 61 and the inverter 81 . The output line 143 is in a state of being bridged between the motor device 60 and the inverter device 80 .

The inverter device 80 has a smoothing capacitor 145 . Smoothing capacitor 145 is a capacitor that smoothes the DC voltage supplied from battery 31 . Smoothing capacitor 145 is connected to P line 141 and N line 142 between battery 31 and inverter 81 . Smoothing capacitor 145 is connected in parallel with inverter 81 .

The inverter 81 is a power conversion circuit, such as a DC-AC conversion circuit. The inverter 81 has arm circuits 85 for a plurality of phases. For example, the inverter 81 has arm circuits 85 for each of the U-phase, V-phase, and W-phase. Arm circuits 85 are sometimes referred to as leg and upper and lower arm circuits. The arm circuit 85 has an upper arm 85a and a lower arm 85b. The upper arm 85 a and the lower arm 85 b are connected in series with the battery 31 . The upper arm 85 a is connected to the P line 141 and the lower arm 85 b is connected to the N line 142 .

The output line 143 is connected to the arm circuit 85 for each of the multiple phases. The output line 143 is connected between the upper arm 85a and the lower arm 85b. The output line 143 connects the arm circuit 85 and the coil 211 in each of the multiple phases. The output line 143 is connected to the side of the coil 211 opposite the neutral point 65 .

Arms 85 a and 85 b have arm switches 86 and diodes 87 . The arm switch 86 is formed of a switching element such as a semiconductor element. The switching elements include power elements such as IGBTs and MOSFETs. IGBT is an abbreviation for Insulated Gate Bipolar Transistor. MOSFET is an abbreviation for Metal-Oxide-Semiconductor Field-Effect Transistor.

Arms 85a and 85b each have one arm switch 86 and one diode 87 . In arms 85a and 85b, diodes 87 are connected in anti-parallel to arm switches 86 for freewheeling. The collector of the arm switch 86 is connected to the P line 141 in the upper arm 85a. The emitter of the arm switch 86 is connected to the N line 142 in the lower arm 85b. The emitter of the arm switch 86 on the upper arm 85a and the collector of the arm switch 86 on the lower arm 85b are connected to each other. The diode 87 has its anode connected to the emitter of the corresponding arm switch 86 and its cathode connected to its collector. Note that the arm switch 86 can also be called a semiconductor switch.

The motor device unit 50 has a control device 54 . Control device 54 is included in inverter device 80 . The control device 54 is an ECU, for example, and controls driving of the inverter 81 . ECU is an abbreviation for Electronic Control Unit. The control device 54 is mainly composed of a microcomputer having, for example, a processor, memory, I/O, and a bus connecting them. A memory is a non-transitory physical storage medium that non-temporarily stores computer-readable programs and data. A non-transitional tangible storage medium is a non-transitory tangible storage medium, which is implemented by a semiconductor memory, a magnetic disk, or the like. In FIG. 1, the controller 54 is illustrated as CD.

The control device 54 executes various processes related to driving the inverter 81 by executing control programs stored in the memory. The control device 54 is electrically connected to external devices, the inverter 81 and various sensors. The external device is, for example, a high-level ECU such as an integrated ECU mounted on a mobile object. Various sensors are provided in the motor device unit 50, for example. The control device 54 controls the inverter 81 by outputting a command signal to the inverter 81 . The control device 54 generates command signals according to control signals input from an external device, detection signals input from various sensors, and the like. In the inverter device 80, the inverter 81 is driven according to the command signal input from the control device 54, and power conversion by the inverter 81 is performed.

The motor device 60 has a resolver 421 and a temperature sensor 431 as various sensors. The resolver 421 is a rotation sensor that detects the rotation angle of the motor 61 and corresponds to a rotation detection section. The resolver 421 outputs a detection signal corresponding to the rotation angle of the motor 61 . The detection signal of the resolver 421 contains information about the number of rotations of the motor 61, such as the rotation angle. Note that the motor device 60 may have a rotation detector different from the resolver 421 .

The temperature sensor 431 can detect the temperature of the motor 61 and corresponds to a temperature detection section. A temperature sensor 431 outputs a detection signal corresponding to the temperature of the motor 61 . The temperature sensor 431 detects the temperature of the motor 61, for example, the temperature of the stator 200, which will be described later. Note that the temperature sensor 431 may detect the temperature of any part of the motor 61 .

The resolver 421 and temperature sensor 431 are electrically connected to the controller 54 . Resolver 421 is connected to controller 54 by signal line 425 . A detection signal output by the resolver 421 is input to the control device 54 via the signal line 425 . Temperature sensor 431 is connected to controller 54 by signal line 435 . A detection signal output by the temperature sensor 431 is input to the control device 54 via the signal line 435 . The signal lines 425 and 435 are included in the motor device unit 50 and are in a state of being bridged between the motor device 60 and the inverter device 80 .

As shown in FIGS. 2 and 3, in the motor device unit 50, the motor device 60 and the inverter device 80 are arranged along the motor axis Cm. The motor device 60 and the inverter device 80 are fixed to each other by fasteners such as bolts. The motor axis Cm is a virtual line extending linearly. If the direction in which the motor axis Cm extends is called the axial direction AD, the axial direction AD, the radial direction RD, and the circumferential direction CD of the motor axis Cm are orthogonal to each other. Note that the outer side in the radial direction RD may be referred to as the radial outer side, and the inner side in the radial direction RD may be referred to as the radial inner side. 3 shows a longitudinal section of the motor device unit 50 extending along the motor axis Cm.

The motor device 60 has a motor housing 70 . Motor housing 70 accommodates motor 61 . The motor housing 70 is formed in a cylindrical shape as a whole and extends along the motor axis Cm. The motor housing 70 is made of a metal material or the like and has thermal conductivity. The motor housing 70 has an outer peripheral surface 70a. The outer peripheral surface 70a is included in the outer surface of the motor housing 70 and extends annularly in the circumferential direction CD as a whole.

The motor housing 70 has a housing body 71 and motor fins 72 . The housing main body 71 forms an outer peripheral surface 70a. The motor fins 72 are radiation fins provided on the outer peripheral surface 70a. The motor fins 72 increase the surface area of the motor housing 70 and improve the heat dissipation effect of the motor housing 70 . The motor fins 72 protrude radially outward from the outer peripheral surface 70a. The motor fins 72 extend in the axial direction AD along the outer peripheral surface 70a. A plurality of motor fins 72 are arranged in the circumferential direction CD.

The inverter device 80 has an inverter housing 90 . Inverter housing 90 accommodates inverter 81 . Inverter housing 90 is formed in a tubular shape as a whole and extends along motor axis Cm. The inverter housing 90 is made of a metal material or the like and has thermal conductivity. The inverter housing 90 has an outer peripheral surface 90a. The outer peripheral surface 90a is included in the outer surface of the inverter housing 90 and extends annularly in the circumferential direction CD.

The motor device 60 and the inverter device 80 are air-cooled devices. The inverter housing 90 has a housing body 91 and inverter fins 92 . The housing body 91 forms an outer peripheral surface 90a. The inverter fins 92 are radiation fins provided on the outer peripheral surface 90a. The inverter fins 92 increase the surface area of the inverter housing 90 and improve the heat dissipation effect of the inverter housing 90 . The inverter fins 92 protrude radially outward from the outer peripheral surface 90a. The inverter fins 92 extend in the axial direction AD along the outer peripheral surface 90a. A plurality of inverter fins 92 are arranged in the circumferential direction CD.

As shown in FIG. 2, the motor device unit 50 has a unit duct 100. As shown in FIG. The unit duct 100 is made of a resin material or the like. The unit duct 100 accommodates the motor housing 70 and the inverter housing 90 . Unit duct 100 is formed in a tubular shape as a whole and extends along motor axis Cm. The unit duct 100 spans the motor housing 70 and the inverter housing 90 in the axial direction AD. The unit duct 100 covers the motor housing 70 and the inverter housing 90 from the outer peripheral side. Unit duct 100 is fixed to at least one of motor housing 70 and inverter housing 90 . In the unit duct 100, openings are formed at both ends in the axial direction AD.

The inner peripheral surface of the unit duct 100 faces the outer peripheral surfaces 70 a and 90 a via the motor fins 72 and the inverter fins 92 . The inner peripheral surface of the unit duct 100 is spaced radially outward from the outer peripheral surfaces 70a and 90a. In the motor device unit 50, duct flow paths are formed between the outer peripheral surfaces 70a and 90a and the inner peripheral surface of the unit duct 100. As shown in FIG. This duct flow path is opened in the axial direction AD through the opening of the unit duct 100 . In the motor device unit 50 , heat is easily released from the motor fins 72 and the inverter fins 92 by passing gas such as air through the duct flow paths.

The inner peripheral surface of the unit duct 100 is close to or in contact with the tip surfaces of the motor fins 72 and the inverter fins 92 . In this configuration, the gas passing through the duct channel in the axial direction AD easily passes through the positions overlapping the motor fins 72 and the inverter fins 92 in the radial direction RD. Therefore, the heat dissipation effect of the motor fins 72 and the inverter fins 92 can be easily improved.

As shown in FIG. 3 , the inverter device 80 has an inverter lid portion 99 in addition to the inverter housing 90 . The inverter lid portion 99 is made of a metal material or the like and has thermal conductivity. The inverter lid portion 99 extends in a direction perpendicular to the motor axis Cm. In the inverter housing 90 , an opening formed at one end in the axial direction AD is covered with an inverter lid portion 99 .

The motor device 60 has a drive frame 390 in addition to the motor housing 70 . The drive frame 390 is made of a metal material or the like and has thermal conductivity. The drive frame 390 extends in a direction perpendicular to the motor axis Cm. In the motor housing 70 , an opening formed at one end in the axial direction AD is covered with the drive frame 390 . Drive frame 390 is secured to motor housing 70 by frame fasteners 405 . The frame fixture 405 is a fixture such as a bolt. Frame fixture 405 is threaded to drive frame 390 and motor housing 70 via washer 406 .

The motor device 60 has an O-ring 401 . The O-ring 401 is an elastically deformable sealing member, and is made of a resin material or the like. O-ring 401 is sandwiched between motor housing 70 and drive frame 390 . O-ring 401 extends along the outer periphery of motor housing 70 . O-ring 401 seals between motor housing 70 and drive frame 390 .

In the motor device unit 50 , one end in the axial direction AD is formed by the inverter lid portion 99 . A drive frame 390 forms the other end in the axial direction AD.

The motor device unit 50 has a unit housing 51 . The unit housing 51 includes an inverter housing 90 , an inverter lid portion 99 , a motor housing 70 and a drive frame 390 . The outer peripheral surface of the unit housing 51 is formed by the inverter housing 90 and the motor housing 70 . In the unit housing 51 , one of the pair of end faces is formed by the inverter lid portion 99 and the other is formed by the drive frame 390 . The unit duct 100 covers the outer peripheral surface of the unit housing 51 .

As shown in FIGS. 3 and 4, motor 61 has stator 200 , rotor 300 and shaft 340 . Rotor 300 rotates relative to stator 200 around motor axis Cm. Rotor 300 is a rotor and is sometimes referred to as a rotor subassembly. A motor axis Cm is the center line of the rotor 300 and corresponds to the rotation axis. Shaft 340 is fixed to rotor 300 and rotates with rotor 300 . Shaft 340 is the rotating shaft of motor 61 . The centerline of shaft 340 coincides with motor axis Cm. The centerline of stator 200 coincides with motor axis Cm. Stator 200 is a stator and is sometimes referred to as a stator subassembly.

The motor device 60 is an axial gap type rotary electric machine. In the motor 61, a stator 200 and a rotor 300 are arranged in the axial direction AD along the motor axis Cm. Rotor 300 is in a state of being superimposed on stator 200 in the axial direction AD, and rotates relative to stator 200 in this state.

The motor device 60 is a double rotor type rotary electric machine and has two rotors 300 . The two rotors 300 are arranged side by side in the axial direction AD. A stator 200 is provided between two rotors 300 in the axial direction AD. Shaft 340 is fixed to both rotors 300 . The two rotors 300 rotate together with the shaft 340 . When the two rotors 300 are called a first rotor 300a and a second rotor 300b, the first rotor 300a is provided on the rear frame 370 side with respect to the stator 200. As shown in FIG. The second rotor 300 b is provided on the opposite side of the inverter device 80 with respect to the stator 200 . A rotating electric machine of the axial gap type and the double rotor type is sometimes referred to as a double axial motor.

As shown in FIGS. 3 and 6, the stator 200 extends in the circumferential direction CD around the motor axis Cm and has an annular shape as a whole. The stator 200 has a coil unit 210 and a coil protector 250 . The coil unit 210 has a coil section 215 . A plurality of coil portions 215 are arranged in the circumferential direction CD. In the coil unit 210 , a coil 211 is composed of at least one coil portion 215 . The multi-phase coils 211 are arranged in the circumferential direction CD in the coil unit 210 . 6, illustration of the coil protection portion 250 is omitted.

The coil protection portion 250 is made of a resin material or the like. The coil protection part 250 is made of, for example, an epoxy-based thermosetting resin. The coil protection part 250 is, for example, molded resin formed by molding. The coil protection part 250 has electrical insulation. The coil protection portion 250 has thermal conductivity, and heat from the coil portion 215 is easily transferred. The coil protector 250 has a higher thermal conductivity than, for example, air.

The coil protection part 250 covers the coil unit 210 and protects the coil unit 210 . The coil protection portion 250 extends in the circumferential direction CD around the motor axis Cm. Coil protection portion 250 is formed in an annular shape as a whole. The coil protection portion 250 seals the coil 211 and the coil portion 215 . Coil protector 250 contacts both coil portion 215 and motor housing 70 . The coil protection portion 250 facilitates conducting heat from the coil portion 215 to the motor housing 70 .

The rotor 300 extends in the circumferential direction CD around the motor axis Cm and has an annular shape as a whole. Rotor 300 is formed in a plate shape as a whole. The rotor 300 has magnets 310 and magnet holders 320 . A plurality of magnets 310 are arranged in the circumferential direction CD. Magnet 310 is a permanent magnet and forms a magnetic field. A magnet holder 320 supports a plurality of magnets 310 . The magnet holder 320 extends in the circumferential direction CD around the motor axis Cm. The magnet holder 320 is formed in an annular shape as a whole.

The shaft 340 has a shaft body 341 and a shaft flange 342 . The shaft main body 341 is formed in a columnar shape and extends along the motor axis Cm. The shaft flange 342 extends radially outward from the shaft body 341 . The shaft flange 342 extends in the circumferential direction CD around the motor axis Cm. The shaft flange 342 is formed in an annular shape as a whole. Shaft flange 342 is fixed to rotor 300 .

The motor device 60 has a first bearing 360 and a second bearing 361 . Bearings 360 and 361 rotatably support shaft 340 . Rotor 300 is rotatably supported by bearings 360 and 361 via shaft 340 . The first bearing 360 and the second bearing 361 are arranged in the axial direction AD. A shaft flange 342 is provided between the first bearing 360 and the second bearing 361 in the axial direction AD. The first bearing 360 is attached to a rear frame 370 which will be described later, and fixed to the motor housing 70 via the rear frame 370 . The second bearing 361 is attached to the drive frame 390 and fixed to the motor housing 70 via the drive frame 390 .

As shown in FIGS. 3, 4, and 6, the motor device 60 has a busbar unit 260, a rear frame 370, a dust cover 380, a retainer plate 410, a resolver 421, and a resolver cover 424. 3, illustration of the dust cover 380 is omitted.

Rear frame 370 is formed in a plate shape as a whole and extends in a direction orthogonal to motor axis Cm. Rear frame 370 is formed of a metal material or the like. The rear frame 370 covers the stator 200 and the rotor 300 from the inverter device 80 side. The rear frame 370 partitions the internal space of the motor housing 70 from the inverter device 80 side. The rear frame 370 partitions the internal space of the motor housing 70 and the internal space of the inverter housing 90 . Rear frame 370 is provided between motor housing 70 and inverter housing 90 in axial direction AD. Rear frame 370 is sandwiched between motor housing 70 and inverter housing 90 .

The dustproof cover 380 extends in the circumferential direction CD around the motor axis Cm. The dustproof cover 380 is formed in an annular shape as a whole. The dustproof cover 380 is laid on the rear frame 370 from the inverter device 80 side. The dustproof cover 380 is made of a resin material or the like, and has a structure that does not allow foreign matter such as dust to pass through. The dustproof cover 380 prevents foreign matter from entering from one of the internal space of the motor housing 70 and the internal space of the inverter housing 90 to the other.

As shown in FIGS. 4 and 5, the busbar unit 260 extends in the circumferential direction CD around the motor axis Cm. Bus bar unit 260 is formed in an annular shape as a whole. Busbar unit 260 is located at a distance from stator 200 toward rear frame 370 in axial direction AD. The busbar unit 260 is provided closer to the inverter device 80 than the rear frame 370 is. Busbar unit 260 extends along the plate surface of rear frame 370 .

As shown in FIGS. 3 and 6 , the busbar unit 260 has a power busbar 261 and a busbar protection section 270 . The power busbar 261 is a conductive member such as a busbar member for passing current. The power bus bar 261 is provided for each of the multiple phases and forms at least part of the output line 143 for each of the multiple phases. Power bus bar 261 is provided between coil 211 and inverter 81 in output line 143 and electrically connects coil 211 and inverter 81 . The power bus bar 261 extends in the circumferential direction CD around the motor axis Cm. Power bus bar 261 is formed in an annular shape as a whole. The busbar member is a member in which a plate-like body is covered with an insulator.

The busbar protection portion 270 is made of a resin material or the like, and has electrical insulation. The busbar protection unit 270 covers the power busbars 261 and protects the power busbars 261 . The busbar protection portion 270 extends in the circumferential direction CD around the motor axis Cm. Busbar protection portion 270 is formed in an annular shape as a whole.

As shown in FIGS. 3, 5 and 6, the motor device 60 has a relay terminal 280. As shown in FIG. The relay terminal 280 is a conductive member such as a busbar member for passing current. The relay terminal 280 is provided for each of the multiple phases and forms at least part of the output line 143 for each of the multiple phases. Relay terminal 280 is provided between power bus bar 261 and inverter 81 in output line 143 . Relay terminal 280 electrically connects power bus bar 261 and inverter 81 . Relay terminal 280 is electrically connected to power bus bar 261 . A plurality of relay terminals 280 are arranged in the circumferential direction CD. The relay terminal 280 is connected, for example, to a member forming the inverter 81 in the inverter device 80 .

As shown in FIGS. 3, 4, and 6, the retainer plate 410 extends in the circumferential direction CD around the motor axis Cm. Retainer plate 410 is formed in an annular shape as a whole. A retainer plate 410 secures the second bearing 361 to the drive frame 390 . The retainer plate 410 is fixed to the drive frame 390 with the second bearing 361 interposed therebetween.

The resolver 421 extends in the circumferential direction CD around the motor axis Cm. The resolver 421 is formed in an annular shape as a whole. The resolver 421 has a resolver rotor and a resolver stator. The resolver rotor rotates relative to the resolver stator. The resolver rotor is provided on the rotor 300 side, and the resolver stator is provided on the motor housing 70 side. For example, the resolver rotor is attached to shaft 340 and the resolver stator is attached to rear frame 370 . The resolver 421 is provided on the inverter device 80 side with respect to the rear frame 370 . The resolver cover 424 is formed in a plate shape as a whole and extends in a direction perpendicular to the motor axis Cm. The resolver cover 424 covers the resolver 421 from the inverter device 80 side. A resolver cover 424 is attached to the rear frame 370 . The resolver cover 424 covers the shaft body 341 from the inverter device 80 side.

A reduction gear 53 is attached to the motor device unit 50 . The speed reducer 53 mechanically connects the motor 61 and an external device. For example, an external device is mechanically connected to the rotary shaft of the motor 61 via the speed reducer 53 . The speed reducer 53 reduces the speed of rotation of the motor 61 and transmits it to an external device. External devices include wheels, propellers, and the like. The speed reducer 53 is configured including a plurality of gears, and is sometimes called a transmission gear and a gearbox. The speed reducer 53 has a structure adapted to the motor characteristics of the motor 61 . The speed reducer 53 is fixed to the drive frame 390 by a speed reducer fixture 53a. The reducer fixture 53a is a fixture such as a bolt.

<Constituent Group Aa>
As shown in FIGS. 7, 8 and 9, the power busbar 261 has a busbar main body 262 and a busbar terminal 263 . The busbar main body 262 extends in the circumferential direction CD around the motor axis Cm. The busbar main body 262 is formed in an annular shape as a whole. The busbar main body 262 is formed in a plate shape as a whole and extends in a direction perpendicular to the motor axis Cm. The busbar terminal 263 extends from the busbar main body 262 in a direction crossing the circumferential direction CD. The busbar terminal 263 extends radially inward from the busbar body 262 . Bus bar terminal 263 is formed in a plate shape as a whole. 7, illustration of the dust cover 380 is omitted.

A plurality of power bus bars 261 are arranged in the axial direction AD. For example, the plurality of power bus bars 261 include a U-phase power bus bar 261 , a V-phase power bus bar 261 , and a W-phase power bus bar 261 . In the plurality of power busbars 261, respective busbar main bodies 262 are stacked in the axial direction AD. The plurality of busbar main bodies 262 are provided at positions aligned with the stator 200 in the axial direction AD. In the plurality of power busbars 261, respective busbar terminals 263 are located apart in the circumferential direction CD.

The motor device 60 has a stator-side space S1 and an inverter-side space S2. The stator-side space S<b>1 and the inverter-side space S<b>2 are included in the internal space of the motor device 60 and are spaces partitioned by the rear frame 370 . The stator-side space S1 and the inverter-side space S2 are arranged in the axial direction AD with the rear frame 370 interposed therebetween. The stator-side space S1 is a space closer to the stator 200 than the rear frame 370 is. The stator-side space S1 is a space between the rear frame 370 and the drive frame 390 in the axial direction AD. The inverter-side space S2 is a space closer to the inverter device 80 than the rear frame 370 is. The inverter-side space S2 is a space between the rear frame 370 and the inverter housing 90 in the axial direction AD. Note that the internal space of the inverter device 80 may be included in the inverter-side space S2. Further, the stator-side space S1 corresponds to the first space, the inverter-side space S2 corresponds to the second space, and the rear frame 370 corresponds to the space partition.

The power busbar 261 is provided in the inverter-side space S2. The busbar unit 260 is stacked on the rear frame 370 from the inverter device 80 side. The busbar protection portion 270 is fixed to the rear frame 370 with fasteners such as screws.

As shown in FIG. 8 , the busbar protection portion 270 has a plurality of protection plates 271 . The protection plate 271 is made of a resin material or the like and has electrical insulation. The protection plate 271 is formed in a plate shape and extends in a direction perpendicular to the axial direction AD. The protection plate 271 extends in the circumferential direction CD around the motor axis Cm. The protective plate 271 is formed in an annular shape as a whole. A plurality of protection plates 271 are stacked in the axial direction AD via the busbar body 262 . Two bus bar main bodies 262 adjacent to each other with the protective plate 271 interposed therebetween in the axial direction AD are provided with electrical insulation by the protective plate 271 .

As shown in FIG. 10 , the motor device 60 has a neutral point busbar 290 . Neutral point bus bar 290 is included in stator 200 . The neutral point bus bar 290 is a conductive member such as a bus bar member for passing current. The neutral point bus bar 290 forms at least the neutral point 65 and electrically connects the multi-phase coils 211 . The neutral point bus bar 290 extends in the circumferential direction CD around the motor axis Cm. A plurality of neutral point bus bars 290 are arranged in the circumferential direction CD.

As shown in FIG. 8 , the neutral point busbar 290 is provided at a position spaced apart from the power busbar 261 in the axial direction AD. The neutral point bus bar 290 is positioned closer to the drive frame 390 than the rear frame 370 in the axial direction AD. The neutral point bus bar 290 is on the opposite side of the power bus bar 261 via the rear frame 370 in the axial direction AD. The neutral point busbar 290 is provided in the stator-side space S1. On the other hand, as described above, the power busbar 261 is provided in the inverter-side space S2.

As shown in FIGS. 7 and 10, the neutral point busbar 290 is provided at a position spaced apart from the busbar main body 262 in the radial direction RD. The neutral point busbar 290 is located radially inwardly spaced from the busbar main body 262 .

As shown in FIG. 10, coil unit 210 has neutral point unit 214 . A plurality of neutral point units 214 are arranged in the circumferential direction CD. Neutral point unit 214 has a plurality of coil portions 215 and one neutral point bus bar 290 . In the neutral point unit 214 , the multi-phase coils 211 are star-connected by the neutral point 65 . In the coil unit 210, a plurality of star-connected multi-phase coils 211 are arranged in the circumferential direction CD by arranging a plurality of neutral point units 214 in the circumferential direction CD.

As shown in FIG. 11, in the neutral point unit 214, the coil portions 215 are arranged in the circumferential direction CD, so that the multi-phase coils 211 are arranged in the circumferential direction CD. In the neutral point unit 214, a power lead wire 212 and a neutral lead wire 213 extend from the coil 211 for each of the multiple phases. The power lead-out line 212 is drawn radially outward from the coil 211 and extends in the axial direction AD toward the power bus bar 261 . Power lead-out line 212 is electrically connected to power bus bar 261 . The neutral lead wire 213 is drawn radially inward from the coil 211 . Neutral lead wire 213 is electrically connected to neutral point bus bar 290 .

The coil portion 215 is formed by a wound coil wire 220 . The coil wire 220 is a conductive member such as an electric wire for passing current. The coil wire 220 is wound around the core unit 230 . In core unit 230 , coil wire 220 is wound around core 231 via bobbin 240 . In the coil wire 220 , the wound portion forms the coil portion 215 , and the portions extending from the coil portion 215 form the first extension wire 216 and the second extension wire 217 . In the coil portion 215, a first extension line 216 extends from one of both ends aligned in the axial direction AD, and a second extension line 217 extends from the other side.

The coil wire 220 forms the coil 211 by forming the coil portion 215 . In the coil wire 220 , the wound portion forms the coil 211 , and the portions extending from the coil 211 form the power lead wire 212 and the neutral lead wire 213 .

In each of the multiple phases, one coil 211 is formed by two coil portions 215 . In each of the multiple phases, one first extension 216 of the two coil portions 215 forms the power lead 212, and the other first extension 216 forms the neutral lead 213. . The second extension lines 217 of the two coil portions 215 are connected to each other.

In the neutral point unit 214, the coil 211, the power lead wire 212, and the neutral lead wire 213 are denoted by U-phase, V-phase, and W-phase, respectively. Then, in the neutral point unit 214, one U-phase coil 211U, one V-phase coil 211V, and one W-phase coil 211W are arranged in the circumferential direction CD. Similarly, one U-phase power lead wire 212U, one V-phase power lead wire 212V, and one W-phase power lead wire 212W are arranged in the circumferential direction CD. A U-phase neutral lead wire 213U, a V-phase neutral lead wire 213V, and a W-phase neutral lead wire 213W are arranged one by one in the circumferential direction CD.

<Constituent group Ab>
As shown in FIG. 12, the motor 61 has a first rotor 300a and a second rotor 300b. The motor 61 has a first gap G1 and a second gap G2. A first gap G1 is a gap between the stator 200 and the first rotor 300a. A second gap G2 is a gap between the stator 200 and the second rotor 300b. The first gap G1 and the second gap G2 are arranged in the axial direction AD with the stator 200 interposed therebetween. The motor 61 is sometimes called a double-gap rotating electric machine.

As shown in FIG. 13, the coil wire 220 has a conductor portion 221 and a covering portion 222 . The conductor portion 221 has conductivity and is a portion through which current flows in the coil wire 220 . The covering portion 222 is made of a resin material or the like, and has electrical insulation. The covering portion 222 covers the conductor portion 221 . The conductor portion 221 has a plurality of strands 223 . The wire 223 is made of a conductive material such as copper, and is a portion through which current flows in the conductor portion 221 . Coil wire 220 is sometimes referred to as stranded wire and split copper wire.

<Constituent group Ac>
As shown in FIGS. 14 and 15, in the coil unit 210, the plurality of coil portions 215 includes a first coil portion 215a and a second coil portion 215b. The first coil portions 215a and the second coil portions 215b are alternately arranged in the circumferential direction CD. In the coil unit 210, one of the two coil portions 215 adjacent in the circumferential direction CD is the first coil portion 215a, and the other is the second coil portion 215b.

In the coil unit 210, the two coil portions 215 adjacent in the circumferential direction CD have different numbers of turns. The number of turns of the coil portion 215 is the number of turns of the coil wire 220 in the coil portion 215 . The number of turns of the first coil portion 215a and the number of turns of the second coil portion 215b are different. For example, the number of turns of the first coil portion 215a is greater than the number of turns of the second coil portion 215b.

As shown in FIG. 15, in the first coil portion 215a, both the first extension wire 216 and the second extension wire 217 are drawn out to one side in the radial direction RD. For example, in the first coil portion 215a, both the first extension line 216 and the second extension line 217 are drawn radially inward. On the other hand, in the second coil portion 215b, the first extension line 216 and the second extension line 217 are led out in opposite directions in the radial direction RD. For example, in the second coil portion 215b, the first extension line 216 is drawn radially outward, and the second extension line 217 is drawn radially inward. Therefore, if the number of turns of the first coil portion 215a is an integral number, the number of turns of the second coil portion 215b is approximately 0.5 less than the number of turns of the first coil portion 215a.

<Constituent group Ad>
16, 17 and 18, relay terminal 280 and power bus bar 261 are electrically connected. In the power busbar 261, the busbar terminal 263 is connected to the relay terminal 280 by a connector such as a screw. A connector is a conductive member for conducting an electric current.

The motor device 60 has a terminal base 285 . The terminal base 285 is made of a resin material or the like and has electrical insulation. A terminal base 285 supports a connecting portion between the relay terminal 280 and the busbar terminal 263 . For example, by screwing a connector to the terminal base 285 , the connecting portion between the relay terminal 280 and the bus bar terminal 263 is fixed to the terminal base 285 . In other words, the relay terminal 280 and the busbar terminal 263 are connected by the terminal base 285 . The terminal block 285 corresponds to a terminal block. Relay terminal 280 is electrically connected to inverter 81 . The relay terminal 280 is formed of, for example, a busbar member and corresponds to a relay busbar.

As shown in FIG. 18, the terminal base 285 has a base surface 285a. The pedestal surface 285a extends in a direction perpendicular to the motor axis Cm. The relay terminal 280 has a relay connection portion 280a, and the busbar terminal 263 has a busbar connection portion 263a. The relay connection portion 280a and the busbar connection portion 263a are connected to each other by a connector while being superimposed on the pedestal surface 285a. One of the relay connection portion 280a and the busbar connection portion 263a is sandwiched between the other and the base surface 285a.

The relay terminal 280 has a relay extension 280b. Relay extension portion 280 b extends toward inverter device 80 at relay terminal 280 . For example, the relay extension portion 280b extends in the axial direction AD from the relay connection portion 280a. The busbar terminal 263 has a busbar extending portion 263b. The busbar extending portion 263 b extends toward the busbar main body 262 at the busbar terminal 263 . For example, the busbar extending portion 263b has a portion extending in the radial direction RD and a portion extending in the axial direction AD.

A terminal base 285 is provided for each of the multiple phases. A plurality of terminal bases 285 are arranged in the circumferential direction CD along the busbar unit 260 . For example, the plurality of terminal blocks 285 include a U-phase terminal block 285, a V-phase terminal block 285, and a W-phase terminal block 285. The terminal base 285 is provided at a position aligned with the busbar unit 260 in the radial direction RD. The terminal base 285 is located radially inwardly spaced from the busbar unit 260 .

<Constituent group Ae>
As shown in FIG. 19, a plurality of relay terminals 280 are arranged with sufficient spacing. The distance between two adjacent relay terminals 280 in the circumferential direction CD is sufficiently large. For example, in a configuration in which three relay terminals 280 are arranged in the circumferential direction CD, the separation angle between two adjacent relay terminals 280 is approximately 120 degrees.

Assume that in the motor device 60, a plurality of virtual divided regions RE are arranged in the circumferential direction CD. A plurality of divided regions RE are regions divided at equal intervals around the motor axis Cm in the circumferential direction CD. The number of divided areas RE is the same as the number of relay terminals 280 . For example, when there are three relay terminals 280, there are also three divided areas RE. In this case, the three divided regions RE are divided by 120 degrees around the motor axis Cm in the circumferential direction CD.

One relay terminal 280 is arranged in each of the plurality of divided areas RE. For example, one relay terminal 280 is arranged in each of the three divided regions RE. If three relay terminals 280 are arranged at intervals of 120 degrees, one relay terminal 280 is necessarily arranged in each of the three divided regions RE. Even if the separation angle of the three relay terminals 280 is more or less than 120 degrees, at least two of the relay terminals 280 are sufficiently separated.

As with the plurality of relay terminals 280, the plurality of busbar terminals 263 and the plurality of terminal bases 285 are also arranged with sufficient spacing in the circumferential direction CD. For example, when there are three busbar terminals 263 and three terminal bases 285, one busbar terminal 263 and one terminal base 285 are arranged in each of the three divided regions RE.

<Constituent group Af>
As shown in FIGS. 20 and 21, rear frame 370 supports both busbar unit 260 and first bearing 360 . The rear frame 370 has a busbar support portion 371 and a bearing support portion 372 . The rear frame 370 corresponds to the support frame, and the first bearing 360 corresponds to the bearing.

The busbar support portion 371 is a portion of the rear frame 370 that supports the busbar unit 260 . The busbar support portion 371 supports the power busbar 261 by supporting the busbar protection portion 270 . The busbar support portion 371 includes at least a portion of the rear frame 370 that overlaps the busbar unit 260 in the axial direction AD. A busbar unit 260 is fixed to the busbar support portion 371 by a fastener such as a bolt. The busbar support portion 371 extends in the circumferential direction CD around the motor axis Cm. The busbar support portion 371 is formed in an annular shape as a whole. The busbar support portion 371 is located radially inwardly away from the outer peripheral edge of the rear frame 370 . The busbar support portion 371 is located radially outwardly away from the inner peripheral edge of the rear frame 370 . The busbar support portion 371 and the bearing support portion 372 are separated from each other in the radial direction RD.

The bearing support portion 372 is a portion of the rear frame 370 that supports the first bearing 360 . The bearing support portion 372 includes at least a portion of the rear frame 370 that overlaps the first bearing 360 in the axial direction AD. The bearing support portion 372 extends in the circumferential direction CD around the motor axis Cm. The bearing support portion 372 is formed in an annular shape as a whole. The bearing support portion 372 forms the inner peripheral edge of the rear frame 370 .

The bearing support portion 372 has a support protrusion 372a. The support protrusion 372a protrudes in the axial direction AD from the rear frame 370 toward the drive frame 390 side. The support protrusion 372a extends in the circumferential direction CD and is formed in an annular shape as a whole. The support protrusion 372 a is provided at a position spaced radially outward from the inner peripheral edge of the rear frame 370 . The first bearing 360 is fixed to the bearing support portion 372 while being inserted inside the support protrusion 372a. The first bearing 360 is fitted inside, for example, the support protrusion 372a. In addition, in FIG. 21, the busbar support portion 371 and the bearing support portion 372 are indicated by dot hatching.

<Constituent group Ag>
As shown in FIG. 22, the resolver 421 is provided in the inverter side space S2. The resolver 421 is stacked on the rear frame 370 from the inverter device 80 side.

As shown in FIGS. 22 and 23, the resolver 421 is provided with a resolver connector 423 . The resolver connector 423 is a connector for electrically connecting the resolver 421 to an external device such as the control device 54 . In the resolver connector 423 , for example, an electric wire forming the signal line 425 is electrically connected to the resolver 421 . The resolver connector 423 protrudes from the resolver 421 in the axial direction AD.

At least part of the resolver connector 423 is exposed to the inverter device 80 side without being covered by the resolver cover 424 . Note that the resolver cover 424 may be included in the resolver 421 .

As shown in FIG. 22 , the neutral point bus bar 290 is located apart from the resolver 421 in the axial direction AD. The neutral point bus bar 290 is on the opposite side of the resolver 421 via the rear frame 370 in the axial direction AD. The neutral point bus bar 290 is provided in the stator-side space S1, while the resolver 421 is provided in the inverter-side space S2. As shown in FIG. 23, the neutral point bus bar 290 is provided at a position spaced apart from the resolver 421 in the radial direction RD. The neutral point bus bar 290 is located radially outwardly away from the resolver 421 . The rear frame 370 corresponds to the orthogonal frame.

<Constituent Group Ba>
As shown in FIGS. 24, 25 and 26, the rotor 300 has a rotor first surface 301 and a rotor second surface 302 . The rotor first surface 301 and the rotor second surface 302 extend in a direction perpendicular to the motor axis Cm. The rotor first surface 301 and the rotor second surface 302 extend in the circumferential direction CD around the motor axis Cm and are formed in an annular shape as a whole. In the rotor 300 , one of the pair of plate surfaces is the rotor first surface 301 and the other is the rotor second surface 302 .

In the motor device 60, the first rotor 300a and the second rotor 300b are installed with their first rotor surfaces 301 facing each other. In the first rotor 300a and the second rotor 300b, the respective rotor second surfaces 302 face opposite sides. In the first rotor 300a, the rotor second surface 302 faces the rear frame 370 side.

As shown in FIGS. 24 and 25 , in rotor 300 , a plurality of magnets 310 are arranged along rotor first surface 301 . The magnets 310 are exposed on the rotor first surface 301 but not on the rotor second surface 302 . The magnet 310 is covered with the magnet holder 320 from the rotor second surface 302 side.

As shown in FIGS. 25 and 27, rotor 300 has magnet unit 316 . Magnet unit 316 has at least one magnet 310 . In this embodiment, the magnet unit 316 has multiple magnets 310 . In the magnet unit 316, a plurality of magnets 310 are arranged in the circumferential direction CD. The magnet unit 316 has three magnets 310, for example. A plurality of magnet units 316 are arranged in the circumferential direction CD on the rotor 300 .

As shown in FIG. 27, the plurality of magnets 310 included in the rotor 300 include a first peripheral magnet 311a, a second peripheral magnet 311b, a first inner magnet 312a, a second inner magnet 312b, and a first outer magnet 313a. , a second outer magnet 313b. These peripheral magnets 311a, 311b, inner magnets 312a, 312b, and outer magnets 313a, 313b are arranged to strengthen the magnetic force on the stator 200. As shown in FIG. Such an arrangement of magnets 310 is sometimes referred to as a Halbach arrangement. Note that FIG. 27 is a plan view of the arrangement of the magnets 310 when the rotor 300 is viewed from the outside in the radial direction.

A plurality of first circumferential magnets 311a and second circumferential magnets 311b are arranged in the circumferential direction CD. The first circumferential magnets 311a and the second circumferential magnets 311b are alternately arranged one by one in the circumferential direction CD. The first circumferential magnet 311a and the second circumferential magnet 311b are magnets oriented in opposite directions in the circumferential direction CD. The first circumferential magnet 311a is oriented toward one side in the circumferential direction CD, and the second circumferential magnet 311b is oriented toward the other side in the circumferential direction CD. For example, when a person views the rotor 300 from the opposite side of the stator 200, the first circumferential magnets 311a are arranged so as to be oriented clockwise in the circumferential direction CD. The second circumferential magnet 311b is arranged to be oriented counterclockwise in the circumferential direction CD. In this embodiment, the direction of magnetization in the magnet 310 is the direction of orientation. The first circumferential magnet 311a and the second circumferential magnet 311b correspond to circumferential magnets.

The first inner magnets 312a and the second inner magnets 312b are alternately arranged in the circumferential direction CD. For example, the first inner magnets 312a and the second inner magnets 312b are alternately arranged one by one in the circumferential direction CD. The first inner magnet 312a and the second inner magnet 312b are magnets oriented obliquely with respect to the motor axis Cm so as to face the stator 200 side in the axial direction AD. In the circumferential direction CD, the first inner magnet 312a and the second inner magnet 312b are oriented in opposite directions. In the circumferential direction CD, the first inner magnet 312a is oriented on the same side as the first circumferential magnet 311a. In the circumferential direction CD, the second inner magnet 312b is oriented on the same side as the second circumferential magnet 311b. oriented towards. The first inner magnet 312a and the second inner magnet 312b correspond to inner magnets.

The plurality of magnets 310 includes a pair of inner magnets 312a and 312b. The pair of inner magnets 312a and 312b are adjacent in the circumferential direction CD. If the boundary portion between the pair of inner magnets 312a and 312b is called an inner boundary portion BI, the first inner magnet 312a and the second inner magnet 312b forming the inner boundary portion BI form the pair of inner magnets 312a. , 312b. The pair of inner shaft magnets 312a and 312b are oriented obliquely with respect to the motor axis Cm so as to face the stator 200 side in the axial direction AD and face each other in the circumferential direction CD.

The first outer magnets 313a and the second outer magnets 313b are alternately arranged in the circumferential direction CD. The first outer magnets 313a and the second outer magnets 313b are alternately arranged one by one in the circumferential direction CD. The first outer magnet 313a and the second outer magnet 313b are magnets oriented obliquely with respect to the motor axis Cm so as to face the opposite side of the stator 200 in the axial direction AD. In the circumferential direction CD, the first outer magnet 313a and the second outer magnet 313b are oriented in opposite directions. In the circumferential direction CD, the first outer magnet 313a is oriented toward the same side as the first circumferential magnet 311a. In the circumferential direction CD, the second outer magnet 313b is oriented toward the same side as the second circumferential magnet 311b. The first outer magnet 313a and the second outer magnet 313b correspond to the outer magnet.

The plurality of magnets 310 includes a pair of outer magnets 313a and 313b. The pair of outer magnets 313a and 313b are adjacent in the circumferential direction CD. When the boundary between the pair of outer magnets 313a and 313b is called an outer boundary BO, the first outer magnet 313a and the second outer magnet 313b that form the outer boundary BO are connected to the pair of outer magnets 313a and 313b. , 313b. The pair of outer shaft magnets 313a and 313b are oriented obliquely with respect to the motor axis Cm so as to face the opposite side of the stator 200 in the axial direction AD and the opposite sides of each other in the circumferential direction CD. .

In the circumferential direction CD, a plurality of pairs of inner magnets 312a and 312b and a plurality of pairs of outer magnets 313a and 313b are arranged. The pair of inner magnets 312a and 312b and the pair of outer magnets 313a and 313b are alternately arranged in pairs in the circumferential direction CD. The pair of inner magnets 312a and 312b and the pair of outer magnets 313a and 313b are arranged so that the first inner magnet 312a and the first outer magnet 313a are adjacent to each other in the circumferential direction CD via the first circumferential magnet 311a. are placed in In other words, the first circumferential magnet 311a is provided between the first inner magnet 312a and the first outer magnet 313a in the circumferential direction CD. The pair of inner magnets 312a and 312b and the pair of outer magnets 313a and 313b are configured such that the second inner magnet 312b and the second outer magnet 313b are adjacent to each other in the circumferential direction CD via the second circumferential magnet 311b. arranged to fit. In other words, the second circumferential magnet 311b is provided between the second inner magnet 312b and the second outer magnet 313b in the circumferential direction CD.

The plurality of magnets 310 includes a pair of circumferential magnets 311a and 311b. The pair of peripheral magnets 311a and 311b are adjacent to each other via the pair of inner magnets 312a and 312b. A pair of circumferential magnets 311a and 311b are oriented so as to face each other in the circumferential direction CD.

The plurality of magnet units 316 includes a first orientation unit 319a and a second orientation unit 319b. A plurality of the first alignment units 319a and a plurality of the second alignment units 319b are arranged in the circumferential direction CD. The first alignment units 319a and the second alignment units 319b are alternately arranged one by one in the circumferential direction CD. The orientations of the first orientation unit 319a and the second orientation unit 319b are opposite to each other as a whole.

The first orientation unit 319a has one first circumferential magnet 311a, one first inner magnet 312a and one first outer magnet 313a. In the first orientation unit 319a, the first circumferential magnet 311a is arranged between the first inner magnet 312a and the first outer magnet 313a. In the first orientation unit 319a, the first circumferential magnet 311a, the first inner magnet 312a, and the first outer magnet 313a are fixed together to form a unit.

The second orientation unit 319b has one second circumferential magnet 311b, one second inner magnet 312b and one second outer magnet 313b. In the second orientation unit 319b, a second circumferential magnet 311b is arranged between the second inner magnet 312b and the second outer magnet 313b. In the second orientation unit 319b, the second circumferential magnet 311b, the second inner magnet 312b, and the second outer magnet 313b are fixed to each other to form a unit.

The first rotor 300a and the second rotor 300b are provided point-symmetrically to each other. The first rotor 300a is arranged in a direction rotated by 180 degrees with respect to the second rotor 300b. The rotor first surfaces 301 of the first rotor 300a and the second rotor 300b face each other with the stator 200 interposed therebetween. When viewed from the side opposite to the stator 200, the first rotor 300a and the second rotor 300b have circumferential magnets 311a and 311b, inner magnets 312a and 312b, and outer magnets 313a and 313b in the circumferential direction CD. are in the same order.

In the first rotor 300a and the second rotor 300b, the respective first circumferential magnets 311a are arranged in the axial direction AD. In the first rotor 300a and the second rotor 300b, a pair of inner magnets 312a and 312b possessed by one and a pair of outer magnets 313a and 313b possessed by the other are arranged in the axial direction AD. In this configuration, one first inner magnet 312a and the other first outer magnet 313a are arranged in the axial direction AD. In addition, one second inner magnet 312b and the other second outer magnet 313b are arranged in the axial direction AD. Furthermore, one inner boundary portion BI and the other outer boundary portion BO are arranged in the axial direction AD.

<Construction group Bb>
As shown in FIGS. 28, 29 and 30, the rotor 300 has a fixing block 330 and a magnet fixture 335 in addition to the magnet holder 320 and the magnets 310 . The magnet fixture 335 is a fixture such as a bolt, and is made of a metal material or the like. Magnet fixture 335 secures magnet 310 to magnet holder 320 via securing block 330 . In the rotor 300 , the magnet 310 and the fixed block 330 are provided on the rotor first surface 301 side with respect to the magnet holder 320 . The magnet 310 is stacked on the magnet holder 320 from the rotor first surface 301 side in the axial direction AD. Magnet 310 is sandwiched between fixed block 330 and magnet holder 320 in axial direction AD. The magnet fixture 335 is screwed to the fixing block 330 through the magnet holder 320 from the rotor second surface 302 side.

The magnet holder 320 has a holder main body 321 and an outer peripheral engaging portion 322 . The holder main body 321 extends in a direction orthogonal to the motor axis Cm and is formed in a plate shape as a whole. A holder body 321 forms the main part of the magnet holder 320 . The holder main body 321 extends in the circumferential direction CD around the motor axis Cm and is formed in an annular shape as a whole. The magnet holder 320 has a holder inner peripheral end 320a (see FIG. 31) and a holder outer peripheral end 320b. The holder inner peripheral end 320 a is the inner peripheral end of the magnet holder 320 , and the holder outer peripheral end 320 b is the outer peripheral end of the magnet holder 320 . The holder main body 321 forms a holder inner peripheral end 320a and a holder outer peripheral end 320b.

The outer peripheral engaging portion 322 is a protrusion provided on the holder main body 321 and protrudes from the holder main body 321 toward the rotor first surface 301 in the axial direction AD. The outer peripheral engaging portion 322 is provided at the holder outer peripheral end 320b. The outer peripheral engaging portion 322 has a portion extending radially inward, and the magnet 310 is sandwiched between this portion and the holder main body 321 . The outer peripheral engaging portion 322 has an engaging tapered surface 322a. The engagement tapered surface 322a is an inclined surface that is inclined with respect to the motor axis Cm. The engaging tapered surface 322a faces radially inward and is inclined with respect to the motor axis Cm so as to face the holder main body 321 side. The magnet 310 enters between the engaging tapered surface 322a and the holder main body 321 from the radially inner side.

The fixed block 330 is made of a metal material or the like. The fixed block 330 is provided on the side opposite to the outer peripheral engaging portion 322 via the magnet 310 in the radial direction RD. The fixing block 330 has a portion extending radially outward, and the magnet 310 is sandwiched between this portion and the holder body 321 . The fixed block 330 has a block tapered surface 330a. Block tapered surface 330 a is included in the outer surface of fixed block 330 . The block tapered surface 330a is an inclined surface that is inclined with respect to the motor axis Cm. The block tapered surface 330a faces radially outward and is inclined with respect to the motor axis Cm so as to face the holder main body 321 side. The magnet 310 enters between the block tapered surface 330a and the holder main body 321 from the outside in the radial direction.

The magnet 310 is provided between the outer peripheral engaging portion 322 and the fixed block 330 in the radial direction RD. The magnet 310 is fixed to the holder main body 321 while being sandwiched between the outer peripheral engaging portion 322 and the fixed block 330 in the radial direction RD.

As shown in FIG. 31 , a plurality of fixing blocks 330 and magnet fixtures 335 are arranged in the circumferential direction CD together with the magnets 310 . The fixed block 330 is in a state of being stretched over the plurality of magnets 310 in the circumferential direction CD. The outer peripheral engaging portion 322 extends along the holder outer peripheral end 320b. The outer engaging portion 322 extends in the circumferential direction CD around the motor axis Cm and is formed in an annular shape as a whole.

The fixing block 330 and the magnet fixture 335 fix the magnet 310 by fixing the magnet unit 316 to the magnet holder 320 . A plurality of magnet units 316 are arranged in the circumferential direction CD together with the fixing blocks 330 and the magnet fixtures 335 .

As shown in FIG. 32, the magnet unit 316 has a unit inner peripheral end 316a, a unit outer peripheral end 316b, and a unit side surface 316c. The unit inner peripheral end 316a is the radially inner end of the magnet unit 316 and extends in the circumferential direction CD. The unit inner peripheral end 316a extends linearly, for example, along a tangent perpendicular to the radial direction RD. The unit outer peripheral end 316b is the radially outer end of the magnet unit 316 and extends in the circumferential direction CD. The unit outer peripheral end 316b extends in a curved shape along an arc so as to bulge radially outward, for example.

A pair of unit side surfaces 316 c are arranged in the magnet unit 316 in the circumferential direction CD. A pair of unit side surfaces 316c extend in the radial direction RD. The unit side surface 316c spans the unit inner peripheral end 316a and the unit outer peripheral end 316b in the radial direction RD.

The magnet unit 316 has an inner tapered surface 316d and an outer tapered surface 316e. The inner peripheral tapered surface 316d is inclined in the radial direction RD with respect to the motor axis Cm and extends radially outward from the unit inner peripheral end 316a. The outer peripheral tapered surface 316e is inclined in the radial direction RD with respect to the motor axis Cm and extends radially inward from the unit outer peripheral end 316b.

In the magnet unit 316, at least one magnet 310 forms a unit inner peripheral end 316a, a unit outer peripheral end 316b, a unit side surface 316c, an inner peripheral tapered surface 316d, and an outer peripheral tapered surface 316e.

As shown in FIGS. 29 and 30, the magnet unit 316 is sandwiched between the fixed block 330 and the magnet holder 320 with the inner peripheral tapered surface 316d overlapping the block tapered surface 330a. there is The fixing block 330 fixes the magnet unit 316 to the magnet holder 320 by pressing the inner peripheral tapered surface 316d toward the magnet holder 320 side in the radial direction RD with the block tapered surface 330a. The magnet unit 316 is sandwiched between the outer peripheral engaging portion 322 and the holder main body 321 with the outer peripheral tapered surface 316e overlapping the engaging tapered surface 322a. The outer engaging portion 322 and the fixing block 330 fix the magnet unit 316 to the magnet holder 320 in both the axial direction AD and the radial direction RD.

The fixed block 330 corresponds to the fixed support portion, the block tapered surface 330a corresponds to the support inclined surface, and the inner peripheral tapered surface 316d corresponds to the magnet inclined surface.

Next, a method for manufacturing the motor device 60 will be described. The process of manufacturing motor device 60 includes the process of manufacturing rotor 300 . The operator prepares the magnet unit 316, the magnet holder 320, the fixing block 330, and the magnet fixture 335 as a preparatory step. Then, the operator inserts the magnet unit 316 from the inside in the radial direction between the holder main body 321 and the outer peripheral engaging portion 322 of the magnet holder 320 . After that, the worker puts the magnet unit 316 on top of the holder main body 321 , sandwiches the magnet unit 316 between the fixing block 330 and the holder main body 321 , and attaches the fixing block 330 to the holder main body with the magnet fixture 335 . 321. As the operator screws the magnet fixture 335 into the holder body 321, the outer tapered surface 316e is pressed against the engagement tapered surface 322a, and the block tapered surface 330a is pressed against the inner tapered surface 316d.

<Construction group Bc>
As shown in FIGS. 33 , 34 and 35 , the plurality of magnet units 316 includes tilted magnet units 317 and parallel magnet units 318 . A plurality of the inclined magnet units 317 and the parallel magnet units 318 are arranged in the rotor 300 in the circumferential direction CD. The inclined magnet units 317 and the parallel magnet units 318 are alternately arranged one by one in the circumferential direction CD.

As shown in FIG. 34, in the inclined magnet unit 317, a pair of unit side surfaces 316c are inclined radially outward and away from each other. In the tilt magnet unit 317, the distance between the pair of unit side surfaces 316c gradually increases radially outward. In the inclined magnet unit 317, the unit outer peripheral end 316b is longer than the unit inner peripheral end 316a in the radial direction RD. The inclined magnet unit 317 is formed in a trapezoidal or sectoral shape as a whole.

In the parallel magnet unit 318, a pair of unit side surfaces 316c extend in parallel. A pair of unit side surfaces 316c extend in a direction perpendicular to the circumferential direction CD. In the parallel magnet unit 318, the distance between the pair of unit side surfaces 316c is uniform in the radial direction RD. In the parallel magnet unit 318, the unit outer peripheral end 316b and the unit inner peripheral end 316a have substantially the same length in the radial direction RD. The parallel magnet unit 318 is formed in a rectangular shape as a whole.

Next, among the methods of manufacturing the motor device 60, a method of manufacturing the rotor 300 will be described. In the process of manufacturing the rotor 300, the worker fixes the magnet unit 316 to the magnet holder 320 with the fixing block 330 and the magnet fixture 335, as described above. As the plurality of magnet units 316, the operator arranges the inclined magnet units 317 and the parallel magnet units 318 on the magnet holder 320 so that they are alternately arranged in the circumferential direction CD. For both the inclined magnet unit 317 and the parallel magnet unit 318, the operator inserts the unit outer peripheral end 316b between the outer peripheral engaging portion 322 and the holder main body 321. As shown in FIG. The operator arranges the last magnet unit 316 in the magnet holder 320 to be the parallel magnet unit 318 . The operator inserts the last parallel magnet unit 318 between two inclined magnet units 317 adjacent in the circumferential direction CD, and inserts the unit outer peripheral end 316b between the outer peripheral engaging portion 322 and the holder main body 321. get in.

The operator may fix the magnet unit 316 to the magnet holder 320 with the fixing block 330 and the magnet fixture 335 each time the magnet unit 316 is placed on the magnet holder 320 . Alternatively, after arranging all the magnet units 316 in the magnet holder 320 , the operator may fix all the magnet units 316 to the magnet holder 320 with the fixing blocks 330 and the magnet fixtures 335 .

For example, unlike the present embodiment, assume a configuration in which all of the plurality of magnet units 316 are tilt magnet units 317 . In this configuration, an operator cannot insert the last tilt magnet unit 317 between two tilt magnet units 317 adjacent in the circumferential direction CD in the manufacturing process of the rotor 300 . This is because, on the radially inner side of the outer peripheral engaging portion 322, the distance between two adjacent inclined magnet units 317 in the circumferential direction CD is equal to the width dimension of the unit outer peripheral end 316b of the last inclined magnet unit 317. because it is smaller than

On the other hand, in the present embodiment, the operator sets the last one magnet unit 316 to a parallel magnet unit 318, so that the parallel magnet unit 318 can be used as the two inclined magnet units 317 adjacent in the circumferential direction CD. can be interposed. This is because the distance between the two adjacent inclined magnet units 317 in the circumferential direction CD is the same in the area radially inside the outer peripheral engaging portion 322 and the area inside the outer peripheral engaging portion 322 . be.

<Constructive group Bd>
As shown in FIGS. 36, 37 and 38, the rotor 300 has a holder fixture 350. As shown in FIG. The holder fixture 350 is a fixture such as a bolt, and is made of a metal material or the like. A holder fixture 350 secures the magnet holder 320 to the shaft flange 342 . A plurality of holder fixtures 350 are arranged in the circumferential direction CD. The holder fixture 350 is threaded onto the shaft flange 342 while passing through the magnet holder 320 from the rotor second surface 302 side, for example.

As shown in FIGS. 36, 38 and 39, shaft flange 342 has spokes 343 and rim 344 . The spokes 343 extend radially outward from the shaft body 341 . A plurality of spokes 343 are arranged in the circumferential direction CD. The rim 344 extends in the circumferential direction CD around the motor axis Cm and has an annular shape as a whole. The rim 344 is provided at a position spaced radially outward from the shaft body 341 . The rim 344 connects two spokes 343 adjacent in the circumferential direction CD. The spokes 343 connect the shaft body 341 and the rim 344 in the radial direction RD.

The rim 344 has a pair of rim tips 344a. A rim 344 extends from the spokes 343 in both axial directions AD. In the rim 344, a pair of rim tip portions 344a are aligned in the axial direction AD. The rim tip portion 344a is located at a position spaced apart from the spokes 343 in the axial direction AD. The height dimension of the rim 344 is larger than the height dimension of the spokes 343 in the axial direction AD.

As shown in FIGS. 36, 37, and 38, the rotor 300 is laid on the shaft flange 342 from one side in the axial direction AD. At least the rim tip portion 344 a of the shaft flange 342 is in contact with the rotor 300 . Of the portions of shaft 340 that come into contact with rotor 300, the radially outermost portion is rim tip portion 344a. Rim tip portion 344 a is located radially inwardly spaced from magnet 310 on rotor 300 . The holder fixture 350 is positioned radially inwardly spaced from the rim tip 344a. The holder fixture 350 is on the opposite side of the magnet 310 via the rim tip 344a in the radial direction RD.

The holder fixture 350 fixes the magnet holder 320 and the shaft flange 342 while being inserted into the holder fixing hole 325 and the flange fixing hole 345 . The holder fixing holes 325 are provided in the magnet holder 320 . The holder fixing hole 325 penetrates the magnet holder 320 in the axial direction AD. A plurality of holder fixing holes 325 are arranged in the circumferential direction CD. The holder fixing hole 325 is located radially inwardly spaced from the rim 344 . A flange fixing hole 345 is provided in the shaft flange 342 . The flange fixing holes 345 are provided in the spokes 343, for example. The flange fixing hole 345 penetrates the shaft flange 342 in the axial direction AD. A plurality of flange fixing holes 345 are arranged in the circumferential direction CD. The flange fixing hole 345 is located radially inwardly spaced from the rim 344 . For example, holder fasteners 350 are threaded through holder fastener holes 325 to flange fastener holes 345 .

As shown in FIG. 36, in the motor device 60, an attractive force F1 is generated with respect to the rotor 300. As shown in FIG. The attraction force F<b>1 is a force with which the magnet 310 is attracted toward the coil 211 in the axial direction AD, and is generated by the magnetic force of the magnet 310 . Attractive force F1 is a force that tends to bend the peripheral portion of magnet 310 in rotor 300 toward stator 200 .

In motor device 60 , bending stress F<b>2 that resists attraction force F<b>1 is generated in rotor 300 . Bending stress F2 is a force that tends to bend the peripheral portion of magnet 310 in rotor 300 to the side opposite to stator 200 . Bending stress F2 is generated by holder fixture 350 pressing rotor 300 toward stator 200 . Holder fixture 350 applies pressing force F3 to rotor 300 . The pressing force F3 is a force that presses the rotor 300 toward the stator 200 in the axial direction AD. In the rotor 300, the bending stress F2 is generated by the rim tip portion 344a serving as a fulcrum for the pressing force F3. Note that the holder fixture 350 corresponds to the pressing member, and the rim tip portion 344a corresponds to the fulcrum.

For example, unlike the present embodiment, a configuration is assumed in which the pressing force F3 by the holder fixture 350 is not generated. In this configuration, there is concern that the peripheral portion of the magnet 310 in the rotor 300 approaches the stator 200 side in the axial direction AD, and the rotor 300 warps toward the stator 200 side with the rim tip portion 344a as a fulcrum. On the other hand, in the present embodiment, the pressing force F3 generated by the holder fixture 350 suppresses the deformation of the rotor 300 so as to warp toward the stator 200 with the rim tip portion 344a as a fulcrum.

<Constituent group Be>
As shown in FIGS. 40 and 41 , the holder fixture 350 is fixed to a portion of the shaft flange 342 radially inner than the rim 344 . A holder fixture 350 is screwed through the magnet holder 320 to the spoke 343 at a position spaced radially inward from the rim 344 . A rotor gap GR is provided between the portion of the magnet holder 320 to which the holder fixture 350 is fixed and the portion of the spoke 343 to which the holder fixture 350 is fixed.

A portion of the magnet holder 320 to which the holder fixture 350 is fixed is a holder fixing hole 325 in the magnet holder 320 into which the holder fixture 350 is inserted. A portion of the spoke 343 to which the holder fixture 350 is fixed is a flange fixing hole 345 in the spoke 343 into which the holder fixture 350 is inserted. A rotor gap GR is a space formed between the rotor 300 and the shaft flange 342 in the axial direction AD. A rotor gap GR is formed between the magnet holder 320 and the spokes 343 in the axial direction AD. Radially inside the rim 344 , the magnet holder 320 and the spokes 343 are separated in the axial direction AD.

The holder fixture 350 can increase or decrease the width dimension of the rotor gap GR in the axial direction AD. As the amount of screwing of the holder fixture 350 into the spoke 343 increases, the portion of the magnet holder 320 to which the holder fixture 350 is fixed approaches the portion of the spoke 343 to which the magnet fixture 335 is fixed, and the rotor gap GR becomes smaller. As the screwing amount of the holder fixture 350 increases, the pressing force F3 increases and the bending stress F2 increases. Therefore, the rotor gap GR is secured between the shaft flange 342 and the rotor 300, so that the bending stress F2 for resisting the attraction force F1 can be adjusted.

For example, unlike the present embodiment, a configuration is assumed in which the portion of the magnet holder 320 to which the holder fixture 350 is fixed and the portion of the spoke 343 to which the holder fixture 350 is fixed are in contact with each other. In this configuration, it is difficult to further deform the magnet holder 320 by the holder fixture 350, and it is difficult to further increase the pressing force F3. Therefore, for example, even if the pressing force F3 is insufficient with respect to the attraction force F1, there is a concern that the shortage cannot be resolved. In contrast, in the present embodiment, since the portion of the magnet holder 320 to which the holder fixture 350 is fixed and the portion of the spoke 343 to which the holder fixture 350 is fixed are separated in the axial direction AD, It is possible to further increase the pressing force F3.

Next, a method of assembling the rotor 300 and the shaft 340 among the methods of manufacturing the motor device 60 will be described. In the process of attaching the rotor 300 to the shaft 340 , an operator inserts the holder fixture 350 into the holder fixing hole 325 and the flange fixing hole 345 . When screwing the holder fixture 350 inserted through the holder fixing hole 325 into the flange fixing hole 345 , the operator may bend the magnet holder 320 around the magnet 310 to the rotor second surface 302 side. Adjust the screwing amount of the holder fixture 350 . That is, the operator adjusts the pressing force F3 with the holder fixture 350 .

Thereafter, in the step of attaching stator 200 to rotor 300 and shaft 340, the operator confirms that the peripheral portion of magnet 310 in rotor 300 is not warped in axial direction AD. In the rotor 300 , when the peripheral portion of the magnet 310 is along the axial direction AD, the operator adjusts the screwing amount of the holder fixture 350 to eliminate the warpage of the rotor 300 . That is, the operator adjusts the pressing force F3 with the holder fixture 350 so that the bending stress F2 becomes the same as the attraction force F1.

<Constructive group Bf>
As shown in FIGS. 43, 44, and 45, in the shaft flange 342, the plurality of flange fixing holes 345 provided in the spokes 343 include first flange fixing holes 345a and second flange fixing holes 345b. . If the holder fixing hole 325 provided in the first rotor 300a is called a first holder fixing hole 325a, the first holder fixing hole 325a and the first flange fixing hole 345a are arranged in the axial direction AD. When the holder fixing hole 325 provided in the second rotor 300b is called a second holder fixing hole 325b, the second holder fixing hole 325b and the second flange fixing hole 345b are arranged in the axial direction AD. The first flange fixing holes 345a and the second flange fixing holes 345b are arranged alternately, for example, in the circumferential direction CD.

Note that FIG. 43 is a schematic view of the longitudinal section of the motor 61 in which the arrangement of the holder fixtures 350 is developed on a plane when the first rotor 300a, the second rotor 300b, and the shaft flange 342 are viewed from the inside in the radial direction.

As shown in FIGS. 42, 43, and 44, the motor device 60 has a first holder fixture 350a and a second holder fixture 350b as holder fixtures 350. As shown in FIGS. First holder fixture 350 a secures first rotor 300 a to shaft flange 342 . The first holder fixture 350a is inserted into the first holder fixing hole 325a and the first flange fixing hole 345a. The first holder fixture 350a is screwed into the first flange fixing hole 345a through, for example, the first holder fixing hole 325a. Note that the first holder fixture 350a corresponds to the first fixture. The first holder fixing hole 325a corresponds to the first rotor hole, and the first flange fixing hole 345a corresponds to the first shaft hole.

A second holder fixture 350 b secures the second rotor 300 b to the shaft flange 342 . The second holder fixture 350b is inserted into the second holder fixing hole 325b and the second flange fixing hole 345b. The second holder fixture 350b is screwed into the second flange fixing hole 345b through the second holder fixing hole 325b, for example. The second holder fixture 350b corresponds to the second fixture. The second holder fixing hole 325b corresponds to the second rotor hole, and the second flange fixing hole 345b corresponds to the second shaft hole.

The first holder fixing hole 325a and the second holder fixing hole 325b are provided at positions spaced apart in the circumferential direction CD. The first flange fixing hole 345a and the second flange fixing hole 345b are spaced apart in the circumferential direction CD according to the positional relationship between the first holder fixing hole 325a and the second holder fixing hole 325b.

As shown in FIGS. 42 and 43, the motor device 60 has positioning pins 355 . The positioning pin 355 determines the relative position between the rotor 300 and the shaft 340 in the direction perpendicular to the axial direction AD. The positioning pin 355 regulates positional displacement of the rotor 300 with respect to the shaft 340 in a direction perpendicular to the axial direction AD. For example, the positioning pin 355 restricts the positional displacement of the rotor 300 with respect to the shaft 340 in the circumferential direction CD.

As shown in FIGS. 42, 43, and 44, the motor device 60 has holder pin holes 327. As shown in FIGS. Holder pin holes 327 are included in rotor 300 . Holder pin holes 327 are provided in the magnet holder 320 . The holder pin hole 327 penetrates the magnet holder 320 in the axial direction AD. A plurality of holder pin holes 327 are arranged in the circumferential direction CD. The holder pin holes 327 are spaced radially inward from the rim 344 . In the magnet holder 320, holder fixing holes 325 and holder pin holes 327 are arranged in the circumferential direction CD.

Motor device 60 has flange pin holes 348 . Flange pin holes 348 are included in shaft 340 . A flange pin hole 348 is provided in the shaft flange 342 . The flange pin holes 348 are provided in the spokes 343, for example. The flange pin hole 348 penetrates the shaft flange 342 in the axial direction AD. A plurality of flange pin holes 348 are arranged in the circumferential direction CD. Flange pin holes 348 are spaced radially inwardly from rim 344 . In the shaft 340, the flange fixing holes 345 and the flange pin holes 348 are arranged in the circumferential direction CD.

The holder pin hole 327 and the flange pin hole 348 are arranged in the axial direction AD. The positioning pin 355 is inserted into each of the holder pin hole 327 and the flange pin hole 348 in a state of spanning the holder pin hole 327 and the flange pin hole 348 in the axial direction AD. The positioning pin 355 is fitted in each of the holder pin hole 327 and the flange pin hole 348 . For example, the locating pin 355 is press fit into the flange pin hole 348 and has a clearance fit in the holder pin hole 327 . The positioning pin 355 is designed so as not to play with the holder pin hole 327 and the flange pin hole 348 . The positioning pin 355 does not move relative to the holder pin hole 327 and the flange pin hole 348 in the direction perpendicular to the axial direction AD. For example, the positioning pin 355 does not move relative to the holder pin hole 327 and the flange pin hole 348 in the circumferential direction CD.

The holder fixture 350 is likely to rattle with respect to the holder fixing hole 325 and the flange fixing hole 345 . For example, it is conceivable that the holder fixing hole 325 moves relative to the holder fixing hole 325 and the flange fixing hole 345 in the circumferential direction CD. In this case, there is concern that the rotor 300 and the shaft 340 may be relatively displaced in the circumferential direction CD. On the other hand, since the positioning pin 355 and the holder pin hole 327 and the flange pin hole 348 do not play back, the positional deviation between the rotor 300 and the shaft 340 is suppressed by the positioning pin 355 . The positioning pin 355, holder pin hole 327 and flange pin hole 348 are also shown in FIGS.

The holder pin holes 327 provided in the first rotor 300a are referred to as first holder pin holes 327a, and the holder pin holes 327 provided in the second rotor 300b are referred to as second holder pin holes 327b. A plurality of positioning pins 355 are included in the motor device 60 . The plurality of positioning pins 355 include positioning pins 355 that position the first rotor 300 a and the shaft 340 . This positioning pin 355 is fitted into the first holder pin hole 327a. Further, the plurality of positioning pins 355 include positioning pins 355 for positioning the second rotor 300b and the shaft 340. As shown in FIG. This positioning pin 355 is fitted into the second holder pin hole 327b.

The first holder pin hole 327a and the second holder pin hole 327b are arranged in the axial direction AD with the flange pin hole 348 interposed therebetween. That is, the first holder pin hole 327a and the second holder pin hole 327b are not separated in the circumferential direction CD. The positioning pin 355 fitted in the first holder pin hole 327a and the positioning pin 355 fitted in the second holder pin hole 327b are arranged in the axial direction AD. Therefore, it is difficult for the first rotor 300a and the second rotor 300b to have a difference in balance such as rotational balance due to the positioning pin 355 .

For example, unlike the present embodiment, assume a configuration in which the first holder pin hole 327a and the second holder pin hole 327b are shifted in the circumferential direction CD. In this configuration, there is a concern that the first rotor 300a and the second rotor 300b may have different balance due to the position of the positioning pin 355 being shifted in the circumferential direction CD.

The shaft flange 342 has a thick flange portion 347 . The thick flange portion 347 is a portion of the shaft flange 342 that is thicker than other portions. The flange thick portion 347 protrudes from the spoke 343 on each of one side and the other side in the axial direction AD.

The flange pin hole 348 is provided in the thick flange portion 347 of the shaft flange 342 . The flange pin hole 348 penetrates the thick flange portion 347 in the axial direction AD. In the motor device 60 , the flange pin hole 348 is located in the thick flange portion 347 , so that the flange pin hole 348 and the holder pin hole 327 are positioned as close as possible in the axial direction AD. A portion of the positioning pin 355 between the flange pin hole 348 and the holder pin hole 327 in the axial direction AD is as short as possible. Therefore, it is less likely that the portion of the positioning pin 355 between the flange pin hole 348 and the holder pin hole 327 is deformed and the rotor 300 is displaced relative to the shaft 340 in the circumferential direction CD. It's becoming

Since the flange pin hole 348 is provided in the thick flange portion 347, the portion of the positioning pin 355 that fits into the flange pin hole 348 is made as long as possible in the axial direction AD. For this reason, the positioning pin 355 can easily stand with high positional accuracy with respect to the flange pin hole 348 . Further, the shaft flange 342 has a thick flange portion 347 and is locally thick. Therefore, unlike a configuration in which the entire shaft flange 342 is thick, for example, the weight of the shaft flange 342 can be reduced, and the positioning pin 355 is less likely to rattle with respect to the flange pin hole 348 .

In the motor device 60, the first rotor 300a and the second rotor 300b have a point-symmetrical relationship. Therefore, one of the two members used as the rotor 300 can be used as the first rotor 300a, and the other can be arranged point-symmetrically with respect to the first rotor 300a to be used as the second rotor 300b. By sharing the members used as the first rotor 300a and the members used as the second rotor 300b in this way, the cost for manufacturing the first rotor 300a and the second rotor 300b can be reduced.

<Constituent group Ca>
As shown in FIGS. 46 and 47, the motor housing 70 has an inner peripheral surface 70b. The inner peripheral surface 70b is included in the inner surface of the motor housing 70 and extends annularly in the circumferential direction CD as a whole.

The motor housing 70 has a stator holding portion 171 . The stator holding portion 171 is a convex portion provided on the inner peripheral surface 70b. The stator holding portion 171 protrudes radially inward from the housing body 71 . A plurality of stator holding portions 171 are arranged in at least one of the circumferential direction CD and the axial direction AD. The stator holding portion 171 forms an inner peripheral surface 70b together with the housing main body 71. As shown in FIG.

The plurality of stator holding portions 171 include a first peripheral holding portion 172 , a second peripheral holding portion 173 and a shaft holding portion 174 . The first circumferential holding portion 172 and the second circumferential holding portion 173 extend in the circumferential direction CD along the housing body 71 . The first peripheral holding portion 172 and the second peripheral holding portion 173 are arranged in the axial direction AD and provided parallel to each other. The first peripheral holding portion 172 is provided closer to the rear frame 370 than the second peripheral holding portion 173 in the axial direction AD. The first peripheral holding portion 172 is located at a position spaced apart from the rear frame 370 side end of the motor housing 70 toward the second peripheral holding portion 173 . The second circumferential holding portion 173 is positioned away from the end of the motor housing 70 opposite to the inverter device 80 toward the first circumferential holding portion 172 .

The shaft holding portion 174 extends in the axial direction AD along the housing body 71 . A plurality of shaft holding portions 174 are arranged in the circumferential direction CD. The shaft holding portion 174 is bridged between the first peripheral holding portion 172 and the second peripheral holding portion 173 in the axial direction AD. The shaft holding portion 174 connects the first peripheral holding portion 172 and the second peripheral holding portion 173 .

Motor housing 70 has a retention recess 175 . The holding recess 175 is formed by a first peripheral holding portion 172 , a second peripheral holding portion 173 and a shaft holding portion 174 . The holding recess 175 is formed between the first circumferential holding portion 172 and the second circumferential holding portion 173 in the axial direction AD and between two adjacent shaft holding portions 174 in the circumferential direction CD. The holding recess 175 is a recess that is recessed radially outward with respect to the first peripheral holding portion 172 , the second peripheral holding portion 173 and the shaft holding portion 174 . A plurality of holding recesses 175 are arranged in the circumferential direction CD together with the shaft holding portions 174 .

As shown in FIGS. 48 and 49, inside the motor housing 70, the coil protection portion 250 overlaps the inner peripheral surface 70b. The coil protection portion 250 is in close contact with the inner peripheral surface 70b. The coil protection portion 250 is inserted between the first circumferential holding portion 172 and the second circumferential holding portion 173 in the axial direction AD. The coil protection portion 250 is inserted between two shaft holding portions 174 adjacent in the circumferential direction CD. The coil protection portion 250 is in a state of being inserted inside the holding recess 175 and overlaps the inner surface of the holding recess 175 .

The coil protection portion 250 is in a state of being bridged between the first circumferential holding portion 172 and the second circumferential holding portion 173 in the axial direction AD. For example, the coil protection portion 250 overlaps the tip surfaces of the first peripheral holding portion 172 and the second peripheral holding portion 173 . Note that the coil protection portion 250 may protrude outward from the first circumferential holding portion 172 and the second circumferential holding portion 173 in the axial direction AD.

As shown in FIG. 49, the plurality of shaft holding portions 174 are arranged in alignment with the positions of the coil portions 215 in the circumferential direction CD. The number of shaft holding portions 174 arranged in the circumferential direction CD is the same as the number of coil portions 215 arranged in the circumferential direction CD. The shaft holding portion 174 and the coil portion 215 are arranged in the axial direction AD and face each other in the axial direction AD. The coil portion 215 is provided at a position where the coil axis Cc passes through the shaft holding portion 174 . Coil axis Cc is a straight imaginary line that passes through the center of coil portion 215 and extends in radial direction RD. For example, the coil portion 215 is arranged at a position where the coil axis Cc passes through the center of the shaft holding portion 174 in the circumferential direction CD. Further, the coil portion 215 is arranged at a position where the coil axis Cc passes through the center of the shaft holding portion 174 in the axial direction AD.

49, the lateral cross-sectional view of the motor housing 70 and the stator 200 is expanded so that the outer peripheral surface 70a extends linearly. Also, the motor housing 70 corresponds to the electric housing, and the shaft holding portion 174 corresponds to the shaft convex portion.

The coil protection part 250 preferably has high thermal conductivity and electrical insulation. However, if it is difficult to increase both the thermal conductivity and the electrical insulation in the coil protection portion 250, it is preferable to increase the thermal conductivity in preference to the electrical insulation. For example, the thermal conductivity of coil protector 250 is higher than that of bobbin 240 . Specifically, the thermal conductivity of coil protection portion 250 is higher than the thermal conductivity of bobbin 240 . On the other hand, the electrical insulation of coil protection portion 250 is lower than the electrical insulation of bobbin 240 . Specifically, the dielectric constant of coil protection portion 250 is higher than the dielectric constant of bobbin 240 .

Next, among the methods for manufacturing the motor device 60, a method for manufacturing the stator 200 will be described. In the process of manufacturing stator 200, an operator prepares coil unit 210 and motor housing 70 as a preparatory process. Then, the operator installs the coil unit 210 inside the motor housing 70 and mounts the motor housing 70 together with the coil unit 210 in a mold for molding. An operator molds the coil protector 250 inside the motor housing 70 by injection molding. In the motor device 60 in which the coil unit 210 and the motor housing 70 are thus integrated with the coil protection portion 250 by insert molding, the coil protection portion 250 is in close contact with both the coil portion 215 and the inner peripheral surface 70b. ing.

<Constituent group Cb>
As shown in FIG. 50, the motor housing 70 includes a housing base surface 176 and a housing rough surface 177 on the inner peripheral surface 70b. The housing rough surface 177 is rougher than the housing base surface 176 . The housing rough surface 177 is in a rough state, for example, by providing a large number of fine irregularities. The housing rough surface 177 is formed by roughening the motor housing 70 to form a rough surface. Surface roughening for forming the housing rough surface 177 includes mechanical processing and chemical processing.

The housing base surface 176 is provided outside the stator holding portion 171 in the axial direction AD. For example, the housing base surface 176 is provided outside the first peripheral holding portion 172 and the second peripheral holding portion 173 in the axial direction AD. The housing base surface 176 is annularly formed along the inner peripheral surface 70b.

The housing rough surface 177 is provided inside the housing base surface 176 including the outer surface of the stator holding portion 171 in the axial direction AD. The housing rough surface 177 is provided at least on the inner surface of the holding recess 175 . The housing rough surface 177 is provided on the outer surface of the stator holding portion 171 . For example, the housing rough surface 177 is provided on the outer surfaces of the first peripheral holding portion 172 , the second peripheral holding portion 173 and the shaft holding portion 174 . In FIG. 50, the housing rough surface 177 is hatched with dots.

In the inner peripheral surface 70 b , at least a portion on which the coil protection portion 250 is overlapped is a housing rough surface 177 . The housing rough surface 177 is a surface to which the coil protection portion 250 is more likely to adhere than the housing base surface 176 . Moreover, the housing rough surface 177 tends to have a larger surface area than the housing base surface 176 . Therefore, the contact area between the housing rough surface 177 and the coil protection portion 250 tends to increase.

<Constituent group Cc>
As shown in FIGS. 51 and 52 , in stator 200 , power lead wire 212 is led out from coil protection portion 250 . The grommet 255 is made of a resin material or the like and has electrical insulation. A grommet 255 protects the portion where the power lead wire 212 is led out from the coil protection portion 250 . Grommet 255 is included in motor device 60 . Grommet 255 covers power lead wire 212 while straddling a boundary between a portion of power lead wire 212 embedded inside coil protection portion 250 and a portion exposed from coil protection portion 250 . 51, illustration of the coil protection portion 250 is omitted.

The grommet 255 has an embedded portion 255a and an exposed portion 255b. The embedded portion 255 a is a portion of the grommet 255 embedded in the coil protection portion 250 . The exposed portion 255 b is a portion of the grommet 255 exposed from the coil protection portion 250 . The exposed portion 255b extends outward from the coil protection portion 250 from the embedded portion 255a. The exposed portion 255b extends, for example, from the buried portion 255a toward the rear frame 370 in the axial direction AD.

The power lead wire 212 is drawn out from the coil protection portion 250 so as to extend in the axial direction AD along the inner peripheral surface 70b of the motor housing 70 . As shown in FIGS. 52 and 53, the motor housing 70 is provided with a pull-out groove portion 171a. The power lead wire 212 is led out from the coil protection part 250 through the lead groove part 171a. The drawing groove portion 171 a is provided in the stator holding portion 171 . The pull-out groove portion 171a is provided in the first peripheral holding portion 172, and penetrates the first peripheral holding portion 172 in the axial direction AD while being open radially inward.

As shown in FIGS. 51 and 52, the grommet 255 covers at least a portion of the power lead wire 212 passing through the lead groove portion 171a. The grommet 255 is inserted into the lead groove portion 171a together with the power lead wire 212 from the inside in the radial direction. The grommet 255 is in close contact with the inner surface of the lead-out groove portion 171a. The grommet 255 fills the gap between the inner surface of the lead groove portion 171 a and the power lead wire 212 . The grommet 255 is elastically deformable, for example, and is fitted into the pull-out groove portion 171a by being elastically deformed. The power lead wire 212 corresponds to the coil lead wire, and the grommet 255 corresponds to the lead wire protection portion.

Next, among methods for manufacturing stator 200, a method for manufacturing coil protection portion 250 will be described. In the process of manufacturing the coil protector 250, an operator prepares the coil unit 210, the motor housing 70, and the grommet 255 as a preparatory process. The worker then attaches the grommet 255 to the power lead wire 212 of the coil unit 210 . The operator performs the work of installing the coil unit 210 inside the motor housing 70 and the work of fitting the grommet 255 together with the power lead wire 212 into the lead groove portion 171a.

An operator mounts the coil unit 210 and the motor housing 70 with the grommet 255 on the mold, and molds the coil protector 250 . In this case, since the grommet 255 is fitted in the pull-out groove portion 171a, the grommet 255 prevents the molten resin from flowing out of the pull-out groove portion 171a.

<Constituent group Cd>
As shown in FIG. 54, core unit 230 has core 231 and bobbin 240 . The core unit 230 is permanently covered with the coil protection section 250 together with the coil 211 and is protected by the coil protection section 250 . Coil protector 250 is in close contact with at least a portion of bobbin 240 .

The bobbin 240 is made of a resin material or the like. The bobbin 240 is made of, for example, an epoxy thermosetting resin. The bobbin 240 is, for example, molded resin formed by molding. The bobbin 240 has electrical insulation. The bobbin 240 has thermal conductivity, and heat from the core 231 is easily conducted. Bobbin 240 has a greater thermal conductivity than, for example, air.

The bobbin 240 covers at least a portion of the core 231 and protects the core 231 . The bobbin 240 covers the core 231 so as to extend in a direction perpendicular to the axial direction AD. The bobbin 240 is formed in an annular shape as a whole. The bobbin 240 is in close contact with the outer surface of the core 231 . The bobbin 240 easily conducts heat from the coil 211 to the coil protection portion 250 .

The bobbin 240 preferably has high thermal conductivity and electrical insulation. However, if it is difficult to increase both the thermal conductivity and the electrical insulation of the bobbin 240, it is preferable to prioritize the electrical insulation over the thermal conductivity. For example, the electrical insulation of the bobbin 240 is higher than that of the coil protector 250 . Specifically, the dielectric constant of bobbin 240 is smaller than that of coil protection portion 250 . On the other hand, the thermal conductivity of bobbin 240 is lower than that of coil protection portion 250 . Specifically, the thermal conductivity of bobbin 240 is lower than the thermal conductivity of coil protection portion 250 .

<Constituent group Ce>
As shown in FIG. 55, the bobbin 240 has a bobbin body 241 and a bobbin flange 242 . The bobbin body portion 241 is formed in a columnar shape as a whole and extends in the axial direction AD. An outer peripheral surface 241a of the bobbin body 241 is formed in an annular shape extending in a direction orthogonal to the axial direction AD.

The bobbin flange 242 extends outward from the outer peripheral surface 241a. The bobbin flange 242 extends from the outer peripheral surface 241a in a direction orthogonal to the axial direction AD, and is formed in a plate shape as a whole. A pair of bobbin flanges 242 are provided side by side in the axial direction AD. In the bobbin 240 , a coil 211 is wound around a bobbin body 241 between a pair of bobbin flanges 242 .

The bobbin flange 242 has a flange inner plate surface 243 , a flange outer plate surface 244 and a flange end surface 245 . Of the pair of plate surfaces of the bobbin flange 242 , the plate surface on the side of the bobbin body 241 is the flange inner plate surface 243 , and the plate surface on the side opposite to the bobbin body 241 is the flange outer plate surface 244 . In the pair of bobbin flanges 242, respective flange inner plate surfaces 243 face each other. The flange end surface 245 is the tip surface of the bobbin flange 242 and extends in a direction perpendicular to the axial direction AD. The flange end surface 245 is positioned outwardly away from the bobbin body 241 .

The outer surface of bobbin 240 includes bobbin base surface 246 and bobbin rough surface 247 . The bobbin rough surface 247 is rougher than the bobbin base surface 246 . The bobbin rough surface 247 is in a rough state, for example, by providing a large number of fine irregularities. The bobbin rough surface 247 is formed by roughening the bobbin 240 to form a rough surface. Surface roughening for forming the bobbin rough surface 247 includes mechanical processing and chemical processing. In FIG. 55, the bobbin rough surface 247 is hatched with dots.

The bobbin base surface 246 includes, for example, an outer peripheral surface 241 a, a flange inner plate surface 243 and a flange outer plate surface 244 . The bobbin rough surface 247 includes, for example, a flange end surface 245 . In addition, the flange outer plate surface 244 may be included in the rough surface.

The bobbin 240 has at least a bobbin rough surface 247 on which the coil protection portion 250 is superimposed. As shown in FIG. 56 , in the coil unit 210 , when the coil 211 is wound around the bobbin 240 , at least the flange outer plate surface 244 and the flange end surface 245 are exposed to the outside. In the motor device 60 , the coil protection portion 250 covers at least the flange end surface 245 while the coil unit 210 is covered with the coil protection portion 250 . That is, the coil protection portion 250 overlaps the flange end surface 245 . The coil protection portion 250 basically does not cover the flange skin surface 244 .

In the motor device 60 , since the flange end surface 245 is included in the bobbin rough surface 247 , the coil protection portion 250 is easily brought into close contact with the flange end surface 245 . Also, the flange end surface 245 , which is the bobbin rough surface 247 , tends to have a larger surface area than the bobbin base surface 246 . Therefore, the contact area between the flange end face 245 and the coil protection portion 250 tends to increase.

<Constituent group Cf>
As shown in FIGS. 57 and 58, the core 231 has a core body 232 and a core flange 233. As shown in FIGS. The core body portion 232 is formed in a plate shape as a whole and extends in the axial direction AD. An outer peripheral surface 232a of the core body portion 232 is formed in an annular shape so as to extend in a direction perpendicular to the axial direction AD.

The core flange 233 extends outward from the outer peripheral surface 232a. The core flange 233 extends from the outer peripheral surface 232a in a direction orthogonal to the axial direction AD, and is formed in a plate shape as a whole. A pair of core flanges 233 are provided side by side in the axial direction AD. In the core 231 , the coil 211 is wound around the core body 232 via the bobbin body 241 between the pair of core flanges 233 .

As shown in FIGS. 58 and 59, the core 231 as a whole gradually tapers radially inward. The core 231 has a core width that gradually decreases radially inward. The core width is the width dimension of the core 231 in the circumferential direction CD. The outer surface of core 231 includes a core step surface 234 . The core stepped surface 234 extends stepwise in the radial direction RD. A core step surface 234 is provided on each of the core body 232 and the core flange 233 . A pair of core stepped surfaces 234 are provided side by side in the circumferential direction CD on each of the core body portion 232 and the core flange 233 .

The core step surface 234 has a step base surface 234a and a step connection surface 234b. A plurality of staircase base surfaces 234a and staircase connection surfaces 234b are arranged in the radial direction RD. The staircase base surface 234a extends in a direction perpendicular to the circumferential direction CD. Of the two adjacent step base surfaces 234a in the radial direction RD, the radially inner step base surface 234a is arranged inside the radially outer step base surface 234a in the circumferential direction CD. The step connection surface 234b extends in a direction perpendicular to the radial direction RD. The staircase connection surface 234b connects two adjacent staircase base surfaces 234a in the radial direction RD.

The core 231 is made up of a plurality of core-forming plate members 236 . As shown in FIG. 60, the core forming plate member 236 is a thin plate member. The core forming plate member 236 is made of, for example, a soft magnetic material. The core 231 is formed by stacking a plurality of core forming plate members 236 . The core 231 includes a plurality of types of core forming plates 236 with different sizes and shapes. In the core 231, a plurality of types of core forming plate members 236 are used according to the core width. In the core 231, the plurality of core forming plate members 236 forming the stepped base surface 234a of one step are one type of core forming plate members 236 having the same size and shape. The core 231 includes at least as many types of core-forming plates 236 as there are stair base surfaces 234a.

In the core 231, since a plurality of core forming plate members 236 are laminated, eddy current is less likely to occur. Therefore, the eddy current loss generated in the core 231 can be reduced. Moreover, in the core unit 230 , the bobbin 240 is superimposed on at least the core step surface 234 . Since the outer surface of the core 231 includes the core step surface 234, the surface area tends to be large. In the core unit 230 , the contact area between the core 231 and the bobbin 240 tends to increase due to the core stepped surface 234 .

Among methods for manufacturing the motor device 60, a method for manufacturing the core 231 and the core unit 230 will be described. In the process of manufacturing the core 231, an operator prepares a plurality of types of core forming plate materials 236. As shown in FIG. Then, the worker creates the core 231 by stacking a plurality of core forming plate materials 236 of one kind to create a staircase base surface 234a for a plurality of staircases.

In the process of manufacturing the core unit 230, the worker prepares the core 231 as a preparatory process. Then, the operator mounts the core 231 on the mold and forms the bobbin 240 by molding. In the core unit 230 in which the core 231 is thus integrated with the bobbin 240 by insert molding, the bobbin 240 is in close contact with the core 231 . In the core 231 , the bobbin 240 is in close contact with the core stepped surface 234 .

For example, unlike the present embodiment, assume a configuration in which the core width of the core 231 continuously decreases radially inward. In this configuration, the outer surface of core 231 would include a tapered surface rather than core step surface 234 . Therefore, in order to form a tapered surface by laminating a plurality of core forming plate members 236, the number of types of core forming plate members 236 is very large. Regarding the manufacture of the core 231, there is a concern that the cost for manufacturing the core forming plate material 236 increases as the number of types of the core forming plate material 236 increases. On the other hand, in the present embodiment, the core width of the core 231 gradually decreases radially inward, so the types of core forming plate members 236 can be limited. Therefore, in manufacturing the core 231, the cost for manufacturing the core forming plate material 236 can be reduced.

<Constituent group Cg>
As shown in FIGS. 61, 62, 63 and 64, the bobbin 240 has a flange recess 243a. The flange recesses 243 a are provided on each of the pair of bobbin flanges 242 . The flange recess 243 a is a recess provided in the flange inner plate surface 243 . The flange recess 243a is provided on one side of the bobbin body 241 in the circumferential direction CD. The flange recess 243a is not provided on the other side of the bobbin body 241 in the circumferential direction CD. The flange recess 243a extends along the bobbin body 241 in the radial direction RD. Both ends of the flange recess 243a are open in the radial direction RD. The flange concave portion 243a is open toward the side opposite to the bobbin body portion 241 in the circumferential direction CD. The flange recesses 243a provided in each of the pair of bobbin flanges 242 face each other in the axial direction AD. Note that the flange inner plate surface 243 corresponds to the flange surface.

As shown in FIG. 65 , in coil unit 210 , flange recess 243 a is used to lead power lead wire 212 out of coil 211 . In the coil portion 215, a flange concave portion 243a is used to pull out the first extension line 216. As shown in FIG. In the coil portion 215, the coil wire 220 is drawn out through the flange concave portion 243a to form a first extension wire 216. As shown in FIG.

On the opposite side of the flange recess 243a via the bobbin body 241 in the circumferential direction CD, dead space is less likely to occur between the coil portion 215 and the flange inner plate surface 243 due to the absence of the flange recess 243a. there is Since dead space is less likely to occur between the pair of bobbin flanges 242 in this manner, the space factor of the coil 211 in the bobbin 240 can be increased. In the bobbin 240, the smaller the dead space generated between the pair of bobbin flanges 242 is, the higher the space factor of the coil 211 is.

<Constituent group Da>
As shown in FIG. 66 , in the motor device unit 50 , the unit housing 51 has a motor housing 70 and an inverter housing 90 . The outer peripheral surface of unit housing 51 includes an outer peripheral surface 70 a of motor housing 70 and an outer peripheral surface 90 a of inverter housing 90 . Motor fins 72 and inverter fins 92 are provided on the outer peripheral surface of the unit housing 51 . Unit housing 51 accommodates stator 200 , rotor 300 and inverter 81 . In the motor device unit 50 , the heat of the motor 61 and the inverter 81 is easily released to the outside by the motor fins 72 and the inverter fins 92 .

In unit housing 51, motor housing 70 and inverter housing 90 are integrated. The motor housing 70 and the inverter housing 90 are arranged in the axial direction AD along the motor axis Cm. The motor housing 70 corresponds to the electric housing, and the inverter housing 90 corresponds to the device housing.

The motor housing 70 and the inverter housing 90 are fixed by housing fixtures 52 . The housing fixture 52 is a fixture such as a bolt. The housing fixture 52 connects the connecting flange 74 of the motor housing 70 and the connecting flange 94 of the inverter housing 90 . The connecting flange 74 is provided on the outer peripheral surface 70 a of the motor housing 70 and protrudes radially outward from the housing main body 71 . The connecting flange 94 is provided on the outer peripheral surface 90 a of the inverter housing 90 and protrudes radially outward from the housing main body 91 .

As shown in FIGS. 66 and 67, in the motor housing 70, the coil protection portion 250 is superimposed on the inner peripheral surface 70b. The inner peripheral surface 70 b of the motor housing 70 is included in the inner peripheral surface of the unit housing 51 . The coil protection portion 250 overlaps the inner peripheral surface of the unit housing 51 . The coil protection portion 250 is in close contact with the inner peripheral surface of the unit housing 51 .

<Construction group Db>
As shown in FIGS. 68 and 69, in shaft 340, rim 344 of shaft flange 342 is formed in a plate shape as a whole. A pair of plate surfaces of the rim 344 face the radial direction RD. In the rim 344, the thickness direction is the radial direction RD. The rim 344 extends annularly in the circumferential direction CD and corresponds to an annular portion. A rim 344 forms the outer peripheral edge of shaft flange 342 . The rim 344 spans the first rotor 300a and the second rotor 300b in the axial direction AD.

As shown in FIG. 68, rim 344 is provided inside stator 200 . Rim 344 is spaced radially inwardly from stator 200 . The rim 344 partitions the inner space of the stator 200 in the radial direction RD. The inner space of stator 200 is a space existing radially inward of coil protection portion 250 . This inner space is sometimes referred to as an inner region. Rim 344 extends in axial direction AD along the inner peripheral surface of coil protection portion 250 . In the axial direction AD, the height dimension of the rim 344 and the height dimension of the coil protection portion 250 are substantially the same.

69, 70, 71 and 72, the shaft flange 342 has a flange vent 346. As shown in FIGS. A flange vent 346 is provided in the rim 344 and extends through the rim 344 in the radial direction RD. The flange vent 346 is spaced apart from both of the pair of rim tip portions 344a in the axial direction AD. For example, the flange vent 346 is provided at an intermediate position of the rim 344 in the axial direction AD.

A plurality of flange vent holes 346 are arranged in the circumferential direction CD. In the shaft flange 342, the flange vent holes 346 and the spokes 343 are arranged in the circumferential direction CD. A flange vent 346 is provided between two spokes 343 adjacent in the circumferential direction CD. Two spokes 343 that are adjacent to each other via the flange vent hole 346 in the circumferential direction CD are both located apart from the flange vent hole 346 .

In FIG. 68, flange vent holes 346 allow venting in the interior space of motor device 60 in radial direction RD. The flange vent 346 communicates a space radially inside the rim 344 with a space radially outside the rim 344 . In the inner space of coil protection portion 250 , the heat of stator 200 is easily released to the inside of rim 344 through flange ventilation hole 346 . In addition, the stator 200 is easily cooled by the air as a gas flowing through the flange ventilation holes 346 in the radial direction RD. Inside the motor housing 70 , air convection in the radial direction RD is likely to occur through the flange vent holes 346 .

<Constituent Group Dc>
As shown in FIGS. 73 and 74, rotor 300 has holder adjustment holes 326 . A holder adjustment hole 326 is provided in the magnet holder 320 . The holder adjustment hole 326 penetrates the rotor 300 in the axial direction AD by penetrating the magnet holder 320 in the axial direction AD. The holder adjustment hole 326 is provided radially inward of the magnet 310 . For example, the holder adjustment hole 326 is provided between the holder fixing hole 325 and the magnet fixture 335 in the radial direction RD. A plurality of holder adjustment holes 326 are arranged in the circumferential direction CD. The holder adjustment holes 326 are arranged in the same number as the magnet fixtures 335, for example.

In the rotor 300, the center of gravity may deviate from the motor axis Cm in the radial direction RD and the rotor 300 may be out of balance. In the rotor 300, weight members are attached to the magnet holders 320 so as to maintain balance. A weight member attached to the rotor 300 is inserted into one of the plurality of holder adjustment holes 326 according to the balance state of the rotor 300 . The weight member is fixed to the holder adjustment hole 326 by being fitted into the holder adjustment hole 326 or the like. The balance of the rotor 300 includes static balance when the rotor 300 is not rotating and rotational balance when the rotor 300 is rotating. Note that the holder adjustment hole 326 corresponds to the balance adjustment hole.

Note that part of the holder adjustment hole 326 is blocked by the rim 344 in the axial direction AD. The weight member is inserted into the holder adjustment hole 326 from the rotor second surface 302 side in the axial direction AD. The rim 344 blocks part of the holder adjustment hole 326 to prevent the weight member from falling out of the holder adjustment hole 326 toward the rotor first surface 301 .

In FIG. 73, the magnet holder 320 partitions the inner space of the motor housing 70 in the axial direction AD for both the first rotor 300a and the second rotor 300b. For example, the magnet holder 320 of the first rotor 300a divides the internal space of the motor housing 70 into a space on the rear frame 370 side and a space on the stator 200 side. The magnet holder 320 having the second rotor 300b divides the internal space of the motor housing 70 into a space on the stator 200 side and a space on the drive frame 390 side.

The holder adjustment hole 326 allows ventilation in the axial direction AD in the internal space of the motor device 60 . The holder adjustment hole 326 communicates two spaces partitioned in the axial direction AD by the magnet holder 320 . Therefore, the heat of the stator 200 is easily released in the axial direction AD through the holder adjustment holes 326 . Moreover, the stator 200 is easily cooled by the air flowing through the holder adjustment hole 326 in the axial direction AD. Inside the motor housing 70 , air convection in the axial direction AD tends to occur through the holder adjustment hole 326 .

For example, the holder adjustment hole 326 of the first rotor 300a communicates between the space on the rear frame 370 side of the first rotor 300a and the space on the stator 200 side of the first rotor 300a. Therefore, the heat of the stator 200 is easily released to the rear frame 370 side through the holder adjustment hole 326 of the first rotor 300a. Further, the holder adjustment hole 326 of the second rotor 300b communicates the space closer to the stator 200 than the second rotor 300b and the space closer to the drive frame 390 than the second rotor 300b. Therefore, the heat of the stator 200 is easily released to the drive frame 390 side through the holder adjustment hole 326 of the second rotor 300b.

<Constituent group Dd>
As shown in FIG. 75, rear frame 370 has frame opening 373 . The frame opening 373 penetrates the rear frame 370 in the axial direction AD. The frame opening 373 is an opening that opens the rear frame 370 in the axial direction AD. The frame opening 373 is provided radially outward of the busbar unit 260 in the radial direction RD. A plurality of frame openings 373 are arranged in the circumferential direction CD.

A power lead wire 212 is inserted through the frame opening 373 in the axial direction AD. The power lead wire 212 is led out to the power bus bar 261 side through the frame opening 373 . A portion of the power lead-out line 212 led out from the frame opening 373 is electrically connected to the power bus bar 261 . At least one power lead wire 212 is inserted through the frame opening 373 .

In the motor device unit 50, the rear frame 370 and the resolver cover 424 partition the interior of the unit housing 51 into the inverter device 80 side and the motor device 60 side. The rear frame 370 and the resolver cover 424 as a whole extend in a direction perpendicular to the axial direction AD. The rear frame 370 and resolver cover 424 correspond to housing partitions.

As shown in FIGS. 75 and 76, the temperature sensor 431 is provided in the coil unit 210 of the motor 61, for example. A plurality of temperature sensors 431 are provided, for example. Temperature sensor 431 is attached to neutral point bus bar 290 . The neutral point busbar 290 has a busbar main body 291 and a sensor support portion 292 . Busbar main body 291 forms a main portion of neutral point busbar 290 . The busbar main body 291 is in a state of being stretched over the plurality of coil portions 215 in the neutral point unit 214 . The sensor support portion 292 supports the temperature sensor 431 . The sensor support portion 292 is, for example, a projecting portion projecting from the busbar main body 291 . The temperature sensor 431 is fixed to the sensor support portion 292 .

As shown in FIG. 75, the motor device 60 has a signal terminal block 440. As shown in FIG. The signal terminal block 440 is provided on the inverter device 80 side of the rear frame 370 and the resolver cover 424 in the axial direction AD. Signal terminal block 440 is attached to at least one of rear frame 370 and resolver cover 424 . The signal terminal block 440 is arranged in the resolver connector 423 in a direction orthogonal to the axial direction AD.

The motor device 60 has signal wiring 426 . Signal wiring 426 extends from resolver connector 423 . The signal wiring 426 is a conductive member such as an electric wire and forms the signal line 425 . Signal wiring 426 is electrically connected to resolver 421 via resolver connector 423 .

The motor device 60 has signal wiring 436 . A signal wiring 436 extends from the temperature sensor 431 . The signal wiring 436 is a conductive member such as an electric wire and forms the signal line 435 . The signal wiring 436 is electrically connected to the temperature sensor 431 .

The signal terminal block 440 aggregates the signal wirings 426 and 436 and corresponds to a wiring aggregation section. Signal wires 426 and 436 are drawn into the signal terminal block 440 . The signal terminal block 440 has a plurality of terminal portions and a case accommodating these terminal portions. The signal wirings 426 and 436 drawn into the signal terminal block 440 are electrically connected to respective terminal portions.

As for the resolver 421 , the signal wiring 426 is in a state of being stretched between the resolver connector 423 and the signal terminal block 440 . The signal wiring 426 extends along the rear frame 370 and the resolver cover 424 on the inverter device 80 side from the rear frame 370 and the resolver cover 424 . The resolver 421 can detect the state of the motor device 60 by detecting the rotation angle of the motor 61 . The resolver 421 corresponds to the state detection section, and the signal wiring 426 corresponds to the detection wiring.

As for the temperature sensor 431 , the signal wiring 436 is in a state of being stretched between the temperature sensor 431 and the signal terminal block 440 . The signal wiring 436 penetrates the rear frame 370 and the resolver cover 424 in the axial direction AD by being inserted through the frame opening 373 . The temperature sensor 431 can detect the state of the motor device 60 by detecting the temperature of the motor 61 . The temperature sensor 431 corresponds to the state detection section, and the signal wiring 436 corresponds to the detection wiring.

A plurality of inverter wirings of the inverter device 80 are drawn into the signal terminal block 440 . The plurality of inverter wires includes inverter wires that together with signal wires 426 and 436 form signal lines 425 and 435 . The inverter wiring is electrically connected to the signal wirings 426 and 436 via the terminal portion in the signal terminal block 440 . The inverter wiring connected to the signal wirings 426 and 436 is electrically connected to the control device 54 in the inverter device 80, for example.

<Constituent group De>
In FIG. 77, dust cover 380 covers all frame openings 373 . The dustproof cover 380 is in a state of spanning over the plurality of frame openings 373 in the circumferential direction CD. The dustproof cover 380 closes the frame opening 373 from the inverter device 80 side in the axial direction AD. The dustproof cover 380 restricts foreign matter from passing through the frame opening 373 in the axial direction AD.

The dustproof cover 380 covers the power lead-out line 212 and the busbar unit 260 from the inverter device 80 side. The dust-proof cover 380 has electrical insulation properties, and suppresses deterioration in insulation reliability between the power lead-out line 212 and the power bus bar 261 and the inverter device 80 . The dustproof cover 380 is in a state of being inserted between the busbar unit 260 and the busbar terminal 263 in the axial direction AD.

A signal wiring 436 extending from the temperature sensor 431 penetrates the dustproof cover 380 and is led out to the inverter device 80 side. The dustproof cover 380 has wiring holes 381 . The wiring hole 381 penetrates the dustproof cover 380 in the axial direction AD. The signal wiring 436 passes through the dustproof cover 380 by passing through the wiring hole 381 . The wiring hole 381 is sized and shaped to be closed by the signal wiring 436 . In the state where the signal wiring 436 is passed through the wiring hole 381 , it is difficult for foreign matter to pass through the wiring hole 381 . The wiring hole 381 is provided at a position closer to the outer peripheral edge than the inner peripheral edge of the dustproof cover 380 . A plurality of wiring holes 381 are provided in the dustproof cover 380 . One signal wiring 436 is passed through one wiring hole 381 .

The rear frame 370 and the resolver cover 424 correspond to the housing partition, and the dust cover 380 corresponds to the partition cover. The frame opening 373 corresponds to the partition opening, and the power lead wire 212 corresponds to the coil lead wire. Further, the signal wiring 436 may be led out to the inverter device 80 side through between the dustproof cover 380 and the rear frame 370 .

<Constituent group Df>
As shown in FIGS. 78 and 79, motor housing 70 has a connecting flange 74 . The connecting flange 74 extends radially outward from the housing body 71 and corresponds to an electrical machine flange. A plurality of connecting flanges 74 are arranged in the circumferential direction CD.

The connecting flange 74 has a flange hole 74a. The flange hole 74a extends in the axial direction AD. The flange hole 74a penetrates the connecting flange 74 in the axial direction AD. The flange hole 74a is a hole for fixing the motor housing 70 to the inverter housing 90, and corresponds to an electric machine fixing hole. Of the housing main body 71 and the connecting flange 74, only the connecting flange 74 is provided with the flange hole 74a. The connecting flange 74 is connected to a connecting flange 94 of the inverter housing 90 by screwing the housing fixture 52 into the flange hole 74a. The inverter housing 90 is a fixed target to which the motor housing 70 is fixed, and corresponds to a housing fixed target. The connecting flanges 74 are sometimes referred to as ears.

As described above, in the motor housing 70, of the housing main body 71 and the connecting flange 74, only the connecting flange 74 is provided with the flange hole 74a. Therefore, the rigidity of the housing body 71 is not lowered by the flange hole 74a. In the motor housing 70, a flange portion where the housing main body 71 is provided with the connecting flange 74 and a non-flange portion where the housing main body 71 is not provided with the connecting flange 74 are alternately arranged in the circumferential direction CD. Even if the flange hole 74a is formed in the connecting flange 74, the thickness dimension of the flange portion is larger than the thickness dimension of the non-flange portion in the radial direction RD. The rigidity of the flange portion is higher than that of the non-flange portion by the thickness dimension of the connecting flange 74 .

For example, unlike the present embodiment, a configuration in which a hole for fixing the housing fixture 52 is provided in the housing main body 71 is assumed. In this configuration, the thickness of the housing body 71 is reduced by the amount of the hole formed for the housing fixture 52 . Therefore, there is concern that the rigidity of the housing main body 71 will be reduced by the holes for the housing fixtures 52 .

78 and 80, the motor housing 70 has a fixed flange 178. As shown in FIGS. The fixed flange 178 is provided on the outer peripheral surface 70 a of the motor housing 70 . The fixed flange 178 protrudes radially outward from the housing body 71 and corresponds to an electric machine flange. A plurality of fixed flanges 178 are arranged in the circumferential direction CD.

The fixed flange 178 has a flange hole 178a. The flange hole 178a extends in the axial direction AD. The flange hole 178a penetrates the fixed flange 178 in the axial direction AD. The flange hole 178a is a hole for fixing the motor housing 70 to the drive frame 390, and corresponds to an electric machine fixing hole. Of the housing main body 71 and the fixed flange 178, only the fixed flange 178 is provided with the flange hole 178a. The fixed flange 178 is fixed to the drive frame 390 by screwing the frame fixture 405 into the flange hole 178a. The drive frame 390 is a fixed target to which the motor housing 70 is fixed, and corresponds to a housing fixed target. Fixed flanges 178 are sometimes referred to as ears. 80, illustration of the drive frame 390 is omitted.

As described above, in the motor housing 70, only the fixed flange 178 of the housing body 71 and the fixed flange 178 is provided with the flange hole 178a. Therefore, the rigidity of the housing body 71 is not lowered by the flange hole 178a. In the motor housing 70, the flange portion where the housing body 71 is provided with the fixed flange 178 and the non-flange portion where the housing body 71 is not provided with the fixed flange 178 are alternately arranged in the circumferential direction CD. Even if the fixed flange 178 has the flange hole 178a, the thickness dimension of the flange portion is larger than the thickness dimension of the non-flange portion in the radial direction RD. The rigidity of the flange portion is higher than that of the non-flange portion by the thickness dimension of the fixed flange 178 .

For example, unlike the present embodiment, a configuration in which a hole for fixing the frame fixture 405 is provided in the housing body 71 is assumed. This configuration reduces the thickness of the housing body 71 by the amount of holes formed for the frame fasteners 405 . For this reason, there is concern that the rigidity of the housing body 71 will be reduced by the holes for the frame fasteners 405 .

<Constituent group Dg>
As shown in FIGS. 81, 82, and 83, the drive frame 390 covers the motor 61 from the opposite side of the inverter device 80 in the axial direction AD. The drive frame 390 is in a state of closing the opening of the motor housing 70 from the second rotor 300b side. The motor housing 70 corresponds to the electric housing, and the drive frame 390 corresponds to the electric cover.

The drive frame 390 has a frame body 391 and a fixed flange 392 . The frame main body 391 is formed in a plate shape as a whole and extends in a direction perpendicular to the axial direction AD. The frame body 391 closes the opening of the motor housing 70 . The outer peripheral edge of the frame main body 391 extends in the circumferential direction CD along the outer peripheral surface 70 a of the motor housing 70 .

The fixed flange 392 extends radially outward from the frame body 391 . A plurality of fixed flanges 392 are arranged in the circumferential direction CD. For example, eight fixed flanges 392 are arranged in the circumferential direction CD. The fixed flange 392 is aligned with the fixed flange 178 of the motor housing 70 in the axial direction AD.

The fixed flange 392 has a first fixed hole 392a and a second fixed hole 392b. The first fixing hole 392a and the second fixing hole 392b extend in the axial direction AD. The first fixing hole 392a and the second fixing hole 392b pass through the fixing flange 392 in the axial direction AD. The first fixing hole 392 a and the second fixing hole 392 b are provided only in the fixed flange 392 of the frame main body 391 and the fixed flange 392 . The first fixing hole 392 a and the second fixing hole 392 b are arranged in the radial direction RD in the fixing flange 392 . The first fixing hole 392a is provided radially inward of the second fixing hole 392b. The first fixing hole 392a is located radially inwardly spaced from the second fixing hole 392b.

The first fixing hole 392 a is a hole for fixing the drive frame 390 to the motor housing 70 . The fixed flange 392 is fixed to the fixed flange 178 of the motor housing 70 by screwing the frame fixture 405 into the first fixing hole 392a. Fixed flanges 392 are sometimes referred to as ears.

The second fixing hole 392 b is a hole for fixing the drive frame 390 to the speed reducer 53 . The fixed flange 392 is fixed to the reduction gear 53 by screwing the reduction gear fixture 53a into the second fixing hole 392b. The speed reducer 53 is a fixed target to which the drive frame 390 is fixed, and corresponds to a cover fixed target.

As described above, in the drive frame 390, only the fixed flange 392 of the frame body 391 and the fixed flange 392 is provided with the first fixing hole 392a and the second fixing hole 392b. Therefore, the rigidity of the frame main body 391 is not lowered by the first fixing holes 392a and the second fixing holes 392b.

For example, unlike the present embodiment, a configuration in which holes for fixing the frame fixture 405 and the reduction gear fixture 53a are provided in the frame main body 391 is assumed. In this configuration, there is a concern that the rigidity of the frame main body 391 is lowered by the amount of holes formed for the frame fixture 405 and the speed reducer fixture 53a.

Drive frame 390 has a perimeter frame portion 393 and a perimeter flange 394 . The outer frame portion 393 spans two fixed flanges 392 adjacent to each other in the circumferential direction CD and connects the fixed flanges 392 . The outer peripheral frame portion 393 extends in the circumferential direction CD along the outer peripheral edge of the frame main body 391 . A plurality of outer peripheral frame portions 393 are arranged in the circumferential direction CD. The outer frame portion 393 is located radially outwardly away from the frame main body 391 . The outer frame portion 393 is located at a position spaced radially inward from the distal end portion of the fixed flange 392 . The outer frame portion 393 extends in the circumferential direction CD from a portion of the fixing flange 392 between the first fixing hole 392a and the second fixing hole 392b.

In the drive frame 390 , a fixed flange 392 is reinforced by an outer peripheral frame portion 393 . Therefore, even if the rigidity of the fixed flange 392 is reduced due to the formation of the two holes, the first fixed hole 392a and the second fixed hole 392b, the rigidity of the fixed flange 392 is maintained at the outer circumference. It is in a state of being supplemented by the frame portion 393 .

The outer peripheral flange 394 extends radially outward from the outer peripheral frame portion 393 . The outer peripheral flange 394 is located apart from the fixed flange 392 in the circumferential direction CD. A plurality of outer peripheral flanges 394 are arranged in the circumferential direction CD. The outer peripheral flange 394 is fixed to the unit duct 100 (see FIG. 2). A hole for fixing the unit duct 100 is provided in the outer peripheral flange 394 . The unit duct 100 is fixed to the outer peripheral flange 394 by screwing fasteners such as bolts into the holes.

<Constructive Group E>
51, 52, 84, and 86, the power lead-out line 212 is electrically connected to the power bus bar 261. As shown in FIG. Power lead-out line 212 is connected to power bus bar 261 via bus bar lead-out line 265 . The busbar lead-out line 265 is in a state of being drawn out from the power busbar 261 . The busbar lead-out line 265 is a conductive member such as an electric wire for passing current, and is connected to the power busbar 261 so as to be energized. The busbar lead line 265 extends radially outward from the power busbar 261 . A plurality of busbar lead lines 265 are arranged in the circumferential direction CD. The busbar lead-out line 265 is connected to each of the plurality of power busbars 261 . A plurality of bus bar lead-out lines 265 are connected to the power bus bar 261 for each phase. The busbar lead line 265 is on the opposite side of the first rotor 300a via the rear frame 370 in the axial direction AD.

The power busbar 261 and the busbar lead line 265 are provided on the opposite side of the coil 211 via the first rotor 300a in the axial direction AD. The power busbar 261 and the busbar lead-out line 265 are located apart from the first rotor 300a toward the rear frame 370 in the axial direction AD. The power busbar 261 corresponds to a connection target.

As shown in FIGS. 84, 86, and 87, the power lead wire 212 has an outer periphery lead portion 212a, an inner periphery lead portion 212b, a cross lead portion 212c, an outer periphery bent portion 212d, and an inner periphery bent portion 212e. . 87, illustration of the rotors 300a and 300b, the coil protection portion 250, and the like is omitted. Further, in the motor housing 70, the outer peripheral surface 70a may be referred to as the motor outer peripheral surface 70a, and the inner peripheral surface 70b may be referred to as the motor inner peripheral surface 70b.

The outer circumference lead portion 212a is a portion of the power lead wire 212 provided on the outer circumference side of the coil 211 and the first rotor 300a. The outer circumference lead-out portion 212a extends in the axial direction AD along the motor inner circumference surface 70b. The outer circumference lead-out portion 212a extends straight in, for example, the axial direction AD. The outer circumference lead-out portion 212a has a portion passing between the coil 211 and the motor inner peripheral surface 70b and a portion passing between the first rotor 300a and the motor inner peripheral surface 70b. The outer circumference lead-out portion 212a extends toward the power busbar 261 from the coil 211 in the axial direction AD. The outer circumference drawing portion 212a is located radially outwardly away from the first rotor 300a. Outer circumference lead-out portion 212a may or may not extend toward power bus bar 261 from first rotor 300a in axial direction AD.

The inner peripheral lead portion 212b is a portion of the power lead wire 212 provided radially inward of the outer peripheral lead portion 212a. The inner peripheral drawn-out portion 212b extends in the axial direction AD similarly to the outer peripheral drawn-out portion 212a. The inner peripheral drawn-out portion 212b extends straight in the axial direction AD, for example. The inner peripheral drawn-out portion 212b is positioned to be aligned in the axial direction AD with respect to the first rotor 300a. The inner circumference lead-out portion 212b is located away from the first rotor 300a toward the power busbar 261 in the axial direction AD. The inner peripheral lead-out portion 212b is electrically connected to the bus bar lead-out line 265. As shown in FIG. The inner circumference lead-out portion 212b extends toward the first rotor 300a from the busbar lead-out line 265 in the axial direction AD.

The cross lead portion 212c is a portion of the power lead wire 212 that extends in a direction that is inclined with respect to the axial direction AD. The intersecting lead portion 212c extends in a direction crossing the outer peripheral lead portion 212a and the inner peripheral lead portion 212b. The cross drawn portion 212c extends straight in a direction crossing the axial direction AD, for example. The cross drawn portion 212c is perpendicular to the circumferential direction CD and extends in the axial direction AD and the radial direction RD. In the cross lead portion 212c, the end portion on the inner peripheral lead portion 212b side is closer to the power bus bar 261 than the end portion on the outer peripheral lead portion 212a side in the axial direction AD.

The outer circumference bent portion 212d is a portion of the power lead wire 212 that is located between the outer circumference lead portion 212a and the cross lead portion 212c. The outer bent portion 212d connects the outer drawn portion 212a and the crossed drawn portion 212c in a bent state. The outer peripheral bent portion 212d is bent so as to swell radially outward, for example, bent. The outer circumference bent portion 212d is bent to connect the outer circumference lead portion 212a and the cross lead portion 212c. The outer bent portion 212d is sometimes referred to as an outer bent portion. Note that the outer peripheral bent portion 212d may not be bent as long as it is bent, and may be curved, for example.

The inner circumference bent portion 212e is a portion of the power lead wire 212 located between the cross lead portion 212c and the inner circumference lead portion 212b. The inner peripheral curved portion 212e is located at a position spaced apart from the outer peripheral curved portion 212d toward the power bus bar 261 in the axial direction AD. The inner peripheral bent portion 212e connects the intersecting lead portion 212c and the inner peripheral lead portion 212b in a bent state. The inner peripheral bent portion 212e is bent so as to bulge radially inward, for example, bent. The inner circumference bent portion 212e is bent to connect the cross lead portion 212c and the inner circumference lead portion 212b. The inner circumference bent portion 212e may be referred to as an inner circumference bend portion. In addition, the inner peripheral bent portion 212e may not be bent as long as it is bent, and may be curved, for example.

The grommet 255 is made of an insulating material and has electrical insulation. In other words, the grommet 255 is made of a non-conductive material and is non-conductive. Examples of insulating materials include resin materials and rubber materials. The grommet 255 is made of a material that mainly contains synthetic resin, for example.

As shown in FIGS. 84, 85 and 86, the grommet 255 has a grommet body 256, an inner grommet portion 257 and an outer grommet portion 258. As shown in FIGS. The grommet main body 256, the inner grommet portion 257 and the outer grommet portion 258 are arranged in the axial direction AD. The grommet main body 256 covers and protects the outer peripheral drawn-out portion 212a. The grommet main body 256 extends in the axial direction AD while surrounding the four sides of the outer peripheral drawn-out portion 212a. The grommet main body 256 has a portion inserted between the motor inner peripheral surface 70b and the coil 211 in the radial direction RD.

The inner grommet portion 257 extends in the axial direction AD along the outer peripheral lead portion 212a. The inner grommet portion 257 extends from the grommet body 256 toward the cross lead portion 212c. The inner grommet portion 257 covers and protects the outer peripheral lead portion 212a from the inside in the radial direction. The inner grommet portion 257 has a portion that is inserted between the outer circumference drawn portion 212a and the first rotor 300a in the radial direction RD. The inner grommet portion 257 does not extend closer to the power busbar 261 than the first rotor 300a in the axial direction AD. The inner grommet portion 257 corresponds to an inner protection portion.

The outer grommet portion 258 extends in the axial direction AD along the outer peripheral lead portion 212a. The outer grommet portion 258 extends from the grommet body 256 toward the cross lead portion 212c. The outer grommet portion 258 covers and protects the outer peripheral lead portion 212a from the radially outer side. The outer grommet portion 258 has a portion inserted between the outer circumference drawn portion 212a and the motor inner circumference surface 70b in the radial direction RD. The outer grommet portion 258 is in a state of being superimposed on the motor inner peripheral surface 70b. The outer grommet portion 258 corresponds to an outer insulation portion and an outer protection portion.

The outer grommet portion 258 extends closer to the power busbar 261 than the inner grommet portion 257 in the axial direction AD. As shown in FIGS. 84 and 87, the outer grommet portion 258 extends closer to the power bus bar 261 than the outer circumference drawing portion 212a in the axial direction AD. The outer grommet portion 258 is bridged between the outer peripheral lead portion 212a and the intersecting lead portion 212c in the axial direction AD. The outer grommet portion 258 extends toward the power busbar 261 from the outer circumference bent portion 212d in the axial direction AD. On the other hand, the outer grommet portion 258 does not reach the inner peripheral lead portion 212b in the axial direction AD. That is, the outer grommet portion 258 is located at a position spaced apart from the inner peripheral lead portion 212b toward the coil 211 in the axial direction AD. The outer grommet portion 258 may or may not reach the inner peripheral bent portion 212e in the axial direction AD.

In the grommet 255, the outer circumference lead-out portion 212a is sandwiched between the inner grommet portion 257 and the outer grommet portion 258 in the radial direction RD. In the present embodiment, the outer peripheral drawn-out portion 212a enters the inner grommet portion 257 from the radially outer side. For this reason, the inner grommet portion 257 has a portion extending radially outward from this portion in addition to the portion inserted between the outer peripheral lead portion 212a and the first rotor 300a. It should be noted that the outer peripheral drawn-out portion 212a may enter the inside of the outer grommet portion 258 from the radially inner side.

Note that FIG. 85 illustrates a state in which the power lead-out line 212 is not bent. Also, in FIG. 87, illustration of the grommet main body 256 and the inner grommet portion 257 of the grommet 255 is omitted.

As shown in FIGS. 84 and 86 , the outer circumference drawing portion 212a extends toward the power bus bar 261 side from the inner grommet portion 257 in the axial direction AD. In addition, the outer circumference drawing portion 212a extends toward the drive frame 390 side from the grommet 255 in the axial direction AD. That is, the outer circumference lead-out portion 212a extends further than the outer grommet portion 258 toward the side opposite to the power bus bar 261 in the axial direction AD. In the axial direction AD, the length dimension of the outer circumference lead-out portion 212a is larger than the length dimension of the outer grommet portion 258 .

As shown in FIG. 88, in the grommet 255, an outer grommet portion 258 extends from the inner grommet portion 257 toward both sides in the circumferential direction CD. The width dimension Wa1 of the outer grommet portion 258 is larger than the width dimension Wa2 of the inner grommet portion 257 in the circumferential direction CD. In addition, the outer grommet portion 258 extends toward both sides in the circumferential direction CD from the outer peripheral drawn-out portion 212a. In the circumferential direction CD, the width dimension Wa1 of the outer grommet portion 258 is larger than the width dimension Wa3 of the outer peripheral lead portion 212a. The width dimension Wa3 is a dimension that indicates the thickness of the outer peripheral drawn-out portion 212a. Similarly to the outer grommet portion 258, the inner grommet portion 257 extends toward both sides in the circumferential direction CD from the outer peripheral lead portion 212a. In the circumferential direction CD, the width dimension Wa2 of the inner grommet portion 257 is larger than the width dimension Wa3 of the outer peripheral lead portion 212a.

As shown in FIGS. 84 and 86, grommet 255 has grommet hole 450 . The grommet hole 450 penetrates the grommet 255 in the axial direction AD. The grommet hole 450 penetrates the grommet body 256 in the axial direction AD. Grommet hole 450 extends in axial direction AD along the boundary between inner grommet portion 257 and outer grommet portion 258 . The grommet hole 450 is formed by an inner grommet portion 257 and an outer grommet portion 258 . By being inserted into the grommet hole 450 , the outer circumference lead-out portion 212 a penetrates the grommet 255 in the axial direction AD.

The grommet hole 450 penetrates both the embedded portion 255a and the exposed portion 255b of the grommet 255 in the axial direction AD. By being inserted into the grommet hole 450, the outer circumference lead-out portion 212a penetrates both the embedded portion 255a and the exposed portion 255b in the axial direction AD. In the grommet 255, at least part of the grommet body 256 is included in the embedded portion 255a. The inner grommet portion 257 and the outer grommet portion 258 may or may not be included in the embedded portion 255a. At least a portion of the inner grommet portion 257 and at least a portion of the outer grommet portion 258 are included in the exposed portion 255b. The grommet body 256 may or may not be included in the exposed portion 255b.

The grommet 255 is fixed to the motor housing 70 by the coil protection portion 250 having the embedded portion 255a. In the grommet 255, a grommet body 256 and an outer grommet portion 258 are fixed to the motor inner peripheral surface 70b.

Next, among the methods for manufacturing the motor device 60, a method for manufacturing the coil protection portion 250 will be described. In the manufacturing process of the coil protector 250, the worker prepares the coil unit 210, the motor housing 70 and the grommet 255 as a preparatory step.

After the preparation process, the operator performs a mold process for mounting the coil unit 210, the motor housing 70 and the grommet 255 on the mold. A worker attaches the grommet 255 to the coil unit 210 in the mold process. An operator attaches the grommet 255 to the outer peripheral lead portion 212 a by inserting the power lead wire 212 through the grommet hole 450 . The operator may insert the power lead wire 212 through the grommet hole 450 without bending the power lead wire 212, as shown in FIG. 85, for example. Also, the operator installs the coil unit 210 inside the motor housing 70 . The operator may install the coil unit 210 with the grommet 255 inside the motor housing 70 . Then, the operator sets the coil unit 210, the motor housing 70 and the grommet 255 in a mold for molding.

After the mold process, the operator performs the molding process. In the molding process, the operator molds the coil protection portion 250 by injection molding, for example, by injecting molten resin into the motor housing 70 . The inside of the motor housing 70 and the mold is filled with molten resin so as to seal the coil 211 . The grommet 255 restricts leakage of molten resin from around the power lead-out wire 212 . The grommet 255 keeps the coil 211 sealed with molten resin. At least the grommet body 256 of the grommet 255 is immersed in the molten resin. In the grommet 255 , even if molten resin enters the grommet hole 450 in the grommet body 256 , the molten resin does not enter the grommet hole 450 in the inner grommet portion 257 and the outer grommet portion 258 .

The coil protection portion 250 is formed by solidifying the molten resin. The coil protection portion 250 is in a state where the coil 211 is sealed, and corresponds to a sealing resin portion. At least the grommet body 256 of the grommet 255 is embedded in the coil protection portion 250 . The grommet 255 is a member for holding the coil 211 sealed with molten resin, and corresponds to a sealing holding portion. An outer grommet portion 258 is included in the seal retainer.

<Constituent group F>
As shown in FIG. 89, the first rotor 300a and the second rotor 300b have holder ribs 323. As shown in FIG. Holder ribs 323 are included in magnet holder 320 . The holder ribs 323 extend from the holder main body 321 in the axial direction AD. The holder ribs 323 protrude from the holder main body 321 toward the side opposite to the stator 200 in the axial direction AD. In the first rotor 300a, the holder rib 323 protrudes toward the power busbar 261 side. In the second rotor 300b, holder ribs 323 protrude toward the drive frame 390 side.

In magnet holder 320, holder main body 321 and holder ribs 323 are integrally formed. For example, the holder main body 321 and the holder ribs 323 are integrally molded with the material forming the magnet holder 320 . Magnet holder 320 is a non-magnetic member and is made of a non-magnetic material. Non-magnetic materials forming the magnet holder 320 include aluminum alloys, titanium, resins, and CFRP. CFRP is a carbon fiber reinforced plastic.

90 and 91, a holder main body 321 forms a holder inner peripheral end 320a and a holder outer peripheral end 320b of the magnet holder 320 . Both the inner peripheral end and the outer peripheral end of the holder main body 321 extend annularly in the circumferential direction CD. The inner peripheral end of the holder main body 321 is the holder inner peripheral end 320a, and the outer peripheral end of the holder main body 321 is the holder outer peripheral end 320b. The holder main body 321 extends like a plate along the stator 200 in a direction perpendicular to the axial direction AD. The holder main body 321 corresponds to the rotor plate portion, and the holder ribs 323 correspond to the rotor ribs. The holder inner peripheral end 320a corresponds to the inner peripheral end of the rotor plate portion, and the holder outer peripheral end 320b corresponds to the outer peripheral end of the rotor plate portion.

The holder main body 321 has a main body outer plate surface 321a. The main body outer plate surface 321a is the plate surface on the power bus bar 261 side of the pair of plate surfaces of the holder main body 321 . The body outer plate surface 321a extends in a direction perpendicular to the axial direction AD. The holder ribs 323 are provided on the body outer plate surface 321a. In the holder main body 321, the magnet 310 is provided on the plate surface side opposite to the main body outer plate surface 321a.

The holder ribs 323 extend in the radial direction RD along the holder body 321 . The holder ribs 323 extend radially inward from the holder outer peripheral end 320b. The holder rib 323 is a portion elongated in the radial direction RD of the rotor 300 . The holder rib 323 extends in the radial direction RD so as to bridge between the holder outer peripheral end 320b and the holder inner peripheral end 320a. The holder ribs 323 extend radially outward from the holder inner peripheral end 320a. The holder ribs 323 are provided on the rotor second surface 302 but are not provided on the rotor first surface 301 .

A plurality of holder ribs 323 are arranged in the circumferential direction CD. The plurality of holder ribs 323 radially extend around the motor axis Cm. The inner peripheral end of the holder main body 321 is provided with a protrusion that protrudes radially inward. A plurality of protrusions are arranged in the circumferential direction CD. The plurality of holder ribs 323 includes the holder ribs 323 aligned in the radial direction RD in this projecting portion.

The holder rib 323 has a rib inner peripheral end 323a and a rib outer peripheral end 323b. The rib inner peripheral end 323a is the radially inner end of the pair of ends of the holder rib 323, and the rib outer peripheral end 323b is the radially outer end. The rib inner peripheral end 323a is aligned with the holder inner peripheral end 320a in the axial direction AD. The rib outer peripheral end 323b is located in line with the holder outer peripheral end 320b in the axial direction AD.

The holder rib 323 has a parallel rib portion 323c and a tapered rib portion 323d. The rib parallel portion 323 c and the rib taper portion 323 d are included in the tip portion of the holder rib 323 . In the holder rib 323, the end portion on the side opposite to the holder main body 321 among the pair of end portions aligned in the axial direction AD is the tip portion. The tip portion of the holder rib 323 is, for example, a tip surface. The rib parallel portion 323c extends radially outward from the rib inner peripheral end 323a. The rib parallel portion 323c extends parallel to the body outer plate surface 321a. The rib parallel portion 323c is, for example, a surface extending in a direction orthogonal to the axial direction AD and is a flat surface.

The rib tapered portion 323d extends radially inward from the rib outer peripheral end 323b. The rib tapered portion 323d is inclined with respect to the main body outer plate surface 321a so as to face radially outward. The rib tapered portion 323d gradually separates from the main body outer plate surface 321a toward the radially inner side from the rib outer peripheral end 323b. The rib tapered portion 323 d is an inclined surface extending in a direction inclined with respect to the holder main body 321 . The rib tapered portion 323d extends straight in a tapered shape in a direction inclined with respect to the main body outer plate surface 321a, and is sometimes called a tapered surface. The rib tapered portion 323d corresponds to the rib inclined portion.

The rib taper portion 323d extends radially outward from the rib parallel portion 323c. The rib tapered portion 323d spans the rib parallel portion 323c and the rib outer peripheral end 323b. In the radial direction RD, the rib taper portion 323d is longer than the rib parallel portion 323c. A boundary portion between the rib taper portion 323d and the rib parallel portion 323c is positioned closer to the rib inner peripheral end 323a than to the rib outer peripheral end 323b.

The width dimension in the circumferential direction CD of the holder rib 323 gradually decreases radially outward. In the holder rib 323, the width dimension of the rib outer peripheral end 323b is smaller than the width dimension of the rib inner peripheral end 323a. In the holder rib 323, the rib inner peripheral end 323a has the largest width dimension, and the rib outer peripheral end 323b has the smallest width dimension.

The holder rib 323 is provided at a position overlapping the magnet 310 in the axial direction AD. The holder ribs 323 extend radially outward from the magnets 310 . The rib outer peripheral end 323 b is located radially outwardly away from the magnet 310 . The rib inner peripheral end 323 a is located radially inwardly away from the magnet 310 . A boundary portion between the parallel rib portion 323c and the tapered rib portion 323d is radially inside the magnet 310 .

As shown in FIGS. 89 and 92 , rear frame 370 extends like a plate in a direction perpendicular to axial direction AD, and is provided between first rotor 300 a and power bus bar 261 . The rear frame 370 is made of aluminum alloy, titanium, resin, CFRP, or the like. The frame opening 373 is provided in the rear frame 370 so as to pass through the rear frame 370 in the axial direction AD. The power lead-out line 212 is inserted through the frame opening 373 and drawn out to the power bus bar 261 side through the frame opening 373 . The power lead-out line 212 is electrically connected to the power bus bar 261 via the bus bar lead-out line 265 . The rear frame 370 corresponds to the intermediate plate portion, and the frame opening 373 corresponds to the drawer insertion hole.

The busbar lead-out line 265 is in a state of being drawn out from the busbar unit 260 . The busbar lead-out line 265 is electrically connected to each of the power busbar 261 and the power lead-out line 212 . A portion where the busbar lead-out line 265 and the power busbar 261 are connected is protected by a busbar protection section 270 . A lead-out connection portion 266 to which the busbar lead-out line 265 and the power lead-out line 212 are connected is provided outside the busbar protection portion 270 . The drawer connection portion 266 is located away from the frame opening 373 toward the power busbar 261 in the axial direction AD. The drawer connection portion 266 is positioned to line up with the frame opening 373 in the axial direction AD. The busbar lead-out line 265 corresponds to the connection lead-out portion, and the lead-out connection portion 266 corresponds to the connection portion.

Busbar unit 260 is fixed to rear frame 370 . In rear frame 370 , busbar protection portion 270 is fixed to rear frame 370 . The busbar protection portion 270 is supported by a busbar support portion 371 of the rear frame 370 . The busbar protection portion 270 is made of an electrically insulating material. Materials for forming the busbar protection portion 270 include resin and CFRP. Rear frame 370 is fixed to motor housing 70 . The motor housing 70 is made of aluminum alloy, titanium, resin, CFRP, or the like.

As shown in FIGS. 89 and 93, a portion of the power lead-out line 212 is aligned with the holder rib 323 in the axial direction AD. The power lead-out line 212 has an aligned lead-out portion that is aligned with the holder ribs 323 in the axial direction AD. The parallel drawn portions include an inner circumferential drawn portion 212b, a cross drawn portion 212c, and an inner circumferential bent portion 212e. The side-by-side drawer is on the opposite side of the stator 200 via the first rotor 300a in the axial direction AD. The side-by-side drawn portion is provided on the side opposite to the holder main body 321 via the holder rib 323 of the first rotor 300a.

In the power lead wire 212 , the inner peripheral lead portion 212 b is inserted through the frame opening 373 . In the lead connection portion 266 , the inner peripheral lead portion 212 b is connected to the bus bar lead line 265 . 93 and 94, illustration of the first rotor 300a and the like is omitted.

In the motor device 60, when the rotor 300 rotates, the holder ribs 323 generate an air flow. The holder ribs 323 rotate together with the holder main body 321 around the motor axis Cm as the rotor 300 rotates. The holder ribs 323 rotate together with the holder main body 321 to send air toward the power lead-out line 212 and the like. The airflow generated by the holder ribs 323 cools the power lead-out line 212 and the like as cooling air. Cooling air generated by the holder ribs 323 hits, for example, a portion of the power lead wire 212 exposed from the coil protection portion 250 and the grommet 255 . This cooling air hits the portion exposed from the grommet 255 in the outer peripheral lead portion 212a, the lead portions 212b and 212c, and the bent portions 212d and 212e.

For example, the cooling air generated by the holder ribs 323 of the first rotor 300a contains the airflow Fa1 that flows out from the frame opening 373, as shown in FIG. The airflow Fa<b>1 flows radially outward from the holder rib 323 toward the power lead wire 212 and reaches the frame opening 373 while cooling the power lead wire 212 . Then, the airflow Fa1 passes through the frame opening portion 373 by flowing in the axial direction AD, and cools the drawer connection portion 266, the power bus bar 261, and the like.

In addition, as shown in FIG. 6, the airflow generated by the holder ribs 323 of the first rotor 300a includes an airflow Fa2 that flows in a circulating manner. The airflow Fa<b>2 flows radially outward toward the power lead wire 212 along the holder ribs 323 and reaches the motor inner peripheral surface 70 b while cooling the power lead wire 212 . After that, the airflow Fa<b>2 flows radially inward along the rear frame 370 while cooling the power lead-out line 212 . Airflow Fa<b>2 cools busbar unit 260 via rear frame 370 by flowing along rear frame 370 . In the busbar unit 260 , the power busbar 261 is indirectly cooled by the airflow Fa<b>2 via the rear frame 370 and the busbar protection section 270 .

Furthermore, the air currents flowing in the radial direction RD along the holder ribs 323 like the air currents Fa1 and Fa2 can cool the magnets 310 via the holder body 321 . In addition, the airflow that flows over the first rotor 300 a to the stator 200 side can cool the coil protection portion 250 and the coils 211 .

<Constituent group G>
As shown in FIGS. 95 and 96, the motor device 60 has an axial gap 475. As shown in FIG. Axial gap 475 is a gap between stator 200 and rotor 300 and corresponds to an axial gap. The axial gap 475 extends in a direction perpendicular to the axial direction AD. The axial gap 475 extends annularly in the circumferential direction CD, similar to the stator 200 and rotor 300 . Axial gap 475 is at least between coil 211 and magnet 310 . Axial gap 475 extends in radial direction RD beyond coil 211 and magnet 310 . The axial gap 475 extends radially inward and/or radially outward from at least one of the coil 211 and the magnet 310 .

Axial gap 475 is a gap between stator surface 201 and rotor first surface 301 . The stator surfaces 201 are end surfaces of the stator 200 and are arranged in a pair in the axial direction AD. One of the pair of stator surfaces 201 faces the first rotor 300a and the other faces the second rotor 300b. Stator face 201 is included on the outer surface of stator 200 . The stator surface 201 extends in a direction perpendicular to the axial direction AD and annularly extends in the circumferential direction CD. A stator surface 201 is formed by at least one of a core unit 230 and a coil protection portion 250 .

In the axial gap 475, the larger the gap area, the stronger the magnetic field. The gap area is the cross-sectional area of the axial gap 475 in the direction perpendicular to the motor axis Cm. For example, when the axial gap 475 is expanded radially outward by a predetermined dimension, the amount of increase in the gap area is greater than when the axial gap 475 is expanded radially inwardly by the same predetermined dimension.

As described in the configuration group Bb above, in the rotor 300 , the magnet unit 316 is fixed to the magnet holder 320 by the fixing block 330 . The fixing block 330 holds the magnet unit 316 together with the outer peripheral engaging portion 322 so as to hold the magnet unit 316 . The fixing block 330 and the outer peripheral engaging portion 322 hold the magnet unit 316 so that the magnet unit 316 does not drop off from the magnet holder 320 .

As shown in FIGS. 96, 97, and 99, the holder body 321 has a body inner plate surface 321b. The main body inner plate surface 321b is a plate surface on the opposite side of the main body outer plate surface 321a among the pair of plate surfaces of the holder main body 321 . The main body inner plate surface 321b faces the axial gap 475 side and extends along with the axial gap 475 in a direction orthogonal to the axial direction AD.

In the magnet unit 316, the unit outer peripheral end 316b is in a state of entering between the body inner plate surface 321b and the engaging tapered surface 322a. The outer peripheral engaging portion 322 and the engaging tapered surface 322a annularly extend in the circumferential direction CD along the holder outer peripheral end 320b. The engaging tapered surface 322a is inclined with respect to the motor axis Cm so as to face the side opposite to the axial gap 475. As shown in FIG. The outer peripheral tapered surface 316e is hooked on the engaging tapered surface 322a. The outer peripheral engagement portion 322 supports the magnet unit 316 in a state where the unit outer peripheral end 316b is hooked, and corresponds to an outer peripheral support portion.

The magnet holder 320 has a holder receiving portion 328 . The holder receiving portion 328 is a portion of the magnet holder 320 that receives the fixed block 330 . The holder receiving portion 328 is located radially inside the fixed block 330 . The holder receiving portion 328 is provided at a position spaced radially inward from the outer peripheral engaging portion 322 via the magnet unit 316 and the fixing block 330 . The holder receiving portion 328 is a protruding portion provided on the main body inner plate surface 321b in the same manner as the outer peripheral engaging portion 322 . The holder receiving portion 328 extends in the axial direction AD from the holder main body 321 toward the axial gap 475 . The holder receiving portion 328 extends annularly in the circumferential direction CD along the holder inner peripheral end 320a.

The holder receiving portion 328 has a holder receiving surface 328a. The holder receiving surface 328a is an inclined surface that is inclined with respect to the motor axis Cm. The holder receiving surface 328a faces radially outward and is inclined with respect to the motor axis Cm so as to face the axial gap 475 side. The holder receiving surface 328a extends annularly in the circumferential direction CD along the holder inner peripheral end 320a. The holder receiving surface 328a has an annular shape.

The fixing block 330 fixes the magnet unit 316 to the magnet holder 320 and corresponds to a fixing member. The fixed block 330 is a non-magnetic member and made of a non-magnetic material. Non-magnetic materials forming the fixed block 330 include aluminum alloys, titanium, resins, and CFRP.

The fixed blocks 330 are individually provided for the plurality of magnet units 316 . For example, one fixing block 330 fixes one magnet unit 316 . That is, the fixed block 330 and the magnet unit 316 are provided in one-to-one correspondence. The plurality of fixed blocks 330 include tilt fixed blocks 330 for fixing the tilt magnet units 317 and parallel fix blocks 330 for fixing the parallel magnet units 318 . At least one of the shape and size of the fixed block 330 for tilt and the fixed block 330 for parallel are different. For example, in the circumferential direction CD, the width dimension of the fixed block 330 for tilt is larger than the width dimension of the fixed block 330 for parallel. The fixed block 330 for inclination and the fixed block 330 for parallel may have the same shape and size.

As shown in FIGS. 96 and 100, the fixed block 330 has a block receiving surface 330b and a block facing surface 330c in addition to the block tapered surface 330a. The block tapered surface 330 a , the block receiving surface 330 b and the block facing surface 330 c are included in the outer surface of the fixed block 330 .

The block receiving surface 330b is an inclined surface inclined with respect to the motor axis Cm. The block receiving surface 330b faces radially inward and is inclined with respect to the motor axis Cm so as to face the side opposite to the axial gap 475 . The block receiving surface 330b is superimposed on the holder receiving surface 328a. The block receiving surface 330b is curved so as to be recessed radially outward. Since the block receiving surface 330b is a curved surface, it easily overlaps with the annular holder receiving surface 328a. The block receiving surface 330b corresponds to the fixed opposite surface.

A pair of block facing surfaces 330c are arranged in the circumferential direction CD. The pair of block facing surfaces 330c bridges between the block taper surface 330a and the block receiving surface 330b. The pair of block facing surfaces 330c extend parallel to each other.

As shown in FIG. 97, a plurality of fixed blocks 330 are arranged in the circumferential direction CD. A plurality of fixed blocks 330 are arranged in a row along the circumferential direction CD. The row of fixed blocks 330 extends annularly in the circumferential direction CD as a whole. There is a gap between two fixed blocks 330 adjacent in the circumferential direction CD. In these fixed blocks 330, gaps are formed by the block facing surfaces 330c being inclined with respect to each other. The fixed block 330 corresponds to a dividing member.

As shown in FIGS. 96 and 100, the fixed block 330 has a block inner end surface 331 and a block outer end surface 332. As shown in FIGS. The block inner end surface 331 and the block outer end surface 332 are included in the outer surface of the fixed block 330 together with the block tapered surface 330a and the like. The block inner end face 331 and the block outer end face 332 extend in a direction perpendicular to the axial direction AD. The block inner end face 331 is provided inside the magnet holder 320 and faces away from the axial gap 475 . The block outer end surface 332 is provided outside the magnet holder 320 and faces the axial gap 475 . The block outer end surface 332 faces the stator surface 201 with an axial gap 475 interposed therebetween. A block tapered surface 330 a , a block receiving surface 330 b , and a block facing surface 330 c are bridged between the block inner end surface 331 and the block outer end surface 332 .

The fixed block 330 has a block hole 333 . The block hole 333 penetrates the fixed block 330 in the axial direction AD. The block hole 333 extends in the axial direction AD so as to span the block inner end surface 331 and the block outer end surface 332 . Block hole 333 is a threaded hole into which magnet fixture 335 is screwed. Block hole 333 has an internal thread. A female thread is provided on the inner peripheral surface of the block hole 333 .

The magnet holder 320 has a block hole 329 . The block hole 329 penetrates the holder body 321 in the axial direction AD. The block hole 329 is provided between 322 and the holder receiving portion 328 in the radial direction RD. A plurality of block holes 329 are arranged in the circumferential direction CD. The block hole 329 is aligned with the block hole 333 in the axial direction AD and communicates with the block hole 333 .

A magnet fixture 335 screws the fixing block 330 to the magnet holder 320 . The magnet fixture 335 is a non-magnetic member made of a non-magnetic material. Non-magnetic materials forming the magnet fixture 335 include aluminum alloys, titanium, resins and CFRP.

The magnet fixture 335 has a fixed shaft portion 336 and a fixed head portion 337 . The fixed shaft portion 336 extends from the fixed head portion 337 in the axial direction AD. The fixed shaft portion 336 has a male thread. A male thread is provided on the outer peripheral surface of the fixed shaft portion 336 . The fixed shaft portion 336 passes through the block hole 329 and is screwed into the block hole 333 . The fixed head 337 is hooked on the holder main body 321 from the side opposite to the fixed block 330 . The fixed head 337 does not protrude further than the holder rib 323 in the axial direction AD. The magnet fixture 335 screws the fixing block 330 to the magnet holder 320 via the holder main body 321 from the side opposite to the fixing block 330 . The magnet fixture 335 corresponds to the screw member, the fixed shaft portion 336 corresponds to the screw portion, and the fixed head portion 337 corresponds to the screw head portion.

The magnet fixture 335 can adjust the position of the fixing block 330 in the axial direction AD by adjusting the degree of screwing of the fixing shaft portion 336 into the block hole 333 . Moreover, the holder receiving surface 328a and the block receiving surface 330b are inclined with respect to the motor axis Cm, so that the position of the fixed block 330 can be adjusted in the radial direction RD. For example, even if the position of the fixing block 330 deviates in the radial direction RD according to the shape and size of the magnet unit 316, the position of the fixing block 330 is adjusted in the axial direction AD so that the holder receiving surface 328a and the block It easily comes into contact with the receiving surface 330b. Both the holder receiving surface 328a and the block receiving surface 330b correspond to adjustment surfaces.

For example, unlike the present embodiment, a configuration is assumed in which the holder receiving surface 328a and the block receiving surface 330b extend parallel to the motor axis Cm. In this configuration, for example, if the position of the fixed block 330 shifts radially outward, there is concern that the holder receiving surface 328a and the block receiving surface 330b will separate in the radial direction RD. Further, if the position of the fixing block 330 is displaced radially inward, the fixing block 330 is caught by the holder receiving portion 328, and the fixing block 330 cannot be inserted between the magnet unit 316 and the holder receiving portion 328. is concerned.

As shown in FIGS. 96, 101 and 102, the magnet unit 316 has a first unit surface 316g and a second unit surface 316h. The magnet unit 316 is formed in a plate shape as a whole and extends in a direction perpendicular to the axial direction AD. The first unit surface 316g and the second unit surface 316h are a pair of plate surfaces that the magnet unit 316 has. The first unit surface 316g and the second unit surface 316h extend in a direction perpendicular to the axial direction AD. The first unit surface 316g faces the axial gap 475 side. The first unit surface 316g faces the stator 200 via the axial gap 475 and corresponds to the unit facing surface. The second unit surface 316 h faces away from the axial gap 475 . The second unit surface 316h overlaps the main body inner plate surface 321b. The first unit surface 316g and the second unit surface 316h extend parallel to each other.

The peripheral surface of the magnet unit 316 extends along the peripheral edges of the first unit surface 316g and the second unit surface 316h. A peripheral surface of the magnet unit 316 extends in the axial direction AD so as to span the first unit surface 316g and the second unit surface 316h. The peripheral surface of the magnet unit 316 includes a unit inner peripheral end 316a, a unit outer peripheral end 316b and a unit side surface 316c.

The unit inner peripheral end 316 a is a radially inner end face of the magnet unit 316 . The unit inner peripheral end 316a includes an inner peripheral tapered surface 316d. The inner peripheral tapered surface 316d corresponds to the magnet inclined surface, and the unit inner peripheral end 316a corresponds to the inner end surface. The unit outer peripheral end 316 b is the radially outer end surface of the magnet unit 316 . The unit outer peripheral end 316b includes an outer peripheral tapered surface 316e. The outer peripheral tapered surface 316e corresponds to the outer peripheral inclined surface, and the unit outer peripheral end 316b corresponds to the outer end surface.

In the inner peripheral tapered surface 316d and the outer peripheral tapered surface 316e, the inclination angle with respect to the motor axis Cm is smaller than 45 degrees, for example. In the inner peripheral tapered surface 316d and the outer peripheral tapered surface 316e, the length dimension in the circumferential direction CD is smaller than the length dimension in the axial direction AD.

As shown in FIG. 96, in the magnet unit 316, the inner peripheral end 316a of the unit enters between the body inner plate surface 321b and the block tapered surface 330a. The block tapered surface 330a is inclined with respect to the motor axis Cm so as to face the side opposite to the axial gap 475. As shown in FIG. The block tapered surface 330a is hooked so as to overlap the inner peripheral tapered surface 316d. The block tapered surface 330a corresponds to the fixed inclined surface.

The rotor first surface 301 includes a first unit surface 316g. The rotor first surface 301 includes the tip surface of the outer peripheral engaging portion 322 . A tip surface of the outer peripheral engaging portion 322 forms an axial gap 475 together with the first unit surface 316g. The distal end surface of the outer peripheral engaging portion 322 is continuously aligned with the first unit surface 316g in the radial direction RD. The tip end surface of the outer peripheral engaging portion 322 does not approach the axial gap 475 beyond the first unit surface 316g. The tip surface of the outer peripheral engaging portion 322 may be positioned far from the axial gap 475 beyond the first unit surface 316g.

The rotor first surface 301 includes a block inner end surface 331 . The block inner end surface 331 forms an axial gap 475 together with the first unit. The block inner end surface 331 is continuously aligned with the first unit surface 316g in the radial direction RD. The block inner end surface 331 does not approach the axial gap 475 beyond the first unit surface 316g. The block inner end surface 331 may be located far from the axial gap 475 beyond the first unit surface 316g.

In the rotor 300, the axial gap 475 is determined by the position of the magnet unit 316 in the axial direction AD. As described above, the axial gap 475 is prevented from narrowing due to the outer peripheral engaging portion 322 and the fixed block 330 approaching the axial gap 475 beyond the first unit surface 316g.

The magnet unit 316 is adhered to the holder main body 321 with an adhesive. The adhesive is made of a resin material or the like. As shown in FIGS. 99 and 103, the magnet holder 320 has an adhesive concave portion 481 and a magnet base 482. As shown in FIGS. The bonding concave portion 481 is a concave portion provided in the main body inner plate surface 321b. The magnet base 482 is a protrusion that protrudes from the bottom surface of the adhesive recess 481 . The tip surface of the magnet base 482 is flush with the body inner plate surface 321b. The magnet unit 316 is provided so as to bridge between the magnet base 482 and the main body inner plate surface 321b. The adhesive is provided inside the bonding recess 481 and bonds the inner surface of the bonding recess 481 and the second unit surface 316h.

As shown in FIGS. 98, 99, and 103, the magnet holder 320 has magnet projections 483. As shown in FIGS. The magnet protrusion 483 protrudes from the holder main body 321 toward the magnet unit 316 . The magnet projection 483 is, for example, a projection provided on the magnet base 482 . A plurality of magnet protrusions 483 are arranged in the circumferential direction CD. The magnet protrusion 483 is provided between the outer peripheral engaging portion 322 and the holder receiving portion 328 and extends in the radial direction RD. The magnet protrusion 483 determines the position of the magnet unit 316 in the circumferential direction CD and corresponds to a positioning portion. The magnet protrusion 483 is caught on the magnet unit 316 to restrict the magnet unit 316 from being displaced in the circumferential direction CD relative to the magnet holder 320 .

As shown in FIGS. 98 and 102, the magnet unit 316 has a side tapered surface 316f. Side tapered surface 316f is included in unit side surface 316c. The side tapered surface 316f is an inclined surface that is inclined with respect to the motor axis Cm. The side tapered surface 316f is inclined with respect to the motor axis Cm so as to face the holder main body 321 side. The magnet projection 483 is inserted between the side tapered surface 316 f and the holder main body 321 . The magnet protrusion 483 positions the magnet unit 316 by contacting the side tapered surface 316f. The magnet protrusion 483 restricts the positional displacement of the magnet unit 316 by being hooked on the side tapered surface 316f.

As described in the configuration group Bc above, the multiple magnet units 316 include the inclined magnet units 317 and the parallel magnet units 318 . In the inclined magnet unit 317, the width dimension in the circumferential direction CD increases toward the outer side in the radial direction. In the inclined magnet unit 317, the unit inner peripheral end 316a has the smallest width, and the unit outer peripheral end 316b has the largest width. The tilt magnet unit 317 corresponds to the enlarging unit.

In the parallel magnet unit 318, the width dimension in the circumferential direction CD is uniform in the radial direction RD. In the parallel magnet unit 318, the width dimension of the unit inner peripheral end 316a and the width dimension of the unit outer peripheral end 316b are the same. Parallel magnet unit 318 corresponds to the uniform unit.

The inclined magnet units 317 and the parallel magnet units 318 are alternately arranged one by one in the circumferential direction CD. As shown in FIG. 103, when the unit boundary portion extends radially inward, it passes through a position shifted in the radial direction RD from the motor axis Cm. The unit boundary portion is a boundary portion between the inclined magnet unit 317 and the parallel magnet unit 318, and a plurality of them are arranged in the circumferential direction CD. The magnet base 482 and the magnet projection 483 extend in the radial direction RD along the unit boundary. The magnet bases 482 are individually provided, for example, for all unit boundaries. The plurality of magnet bases 482 includes a magnet base 482 with projections provided with projections 483 for magnets and a magnet base 482 without projections without projections 483 for magnets. For example, the magnet bases 482 with projections and the magnet bases 482 without projections are alternately arranged in the circumferential direction CD.

As described in the configuration group Ba, the magnets 310 are arranged in the Halbach arrangement. As shown in FIG. 98, a plurality of magnet units 316 are arranged in the circumferential direction CD so that the plurality of magnets 310 are arranged in the circumferential direction CD in a Halbach arrangement. The Halbach array facilitates the extension of magnetic flux generated by magnet 310 toward axial gap 475 . Moreover, the magnet holder 320, the fixing block 330 and the magnet fixture 335 are non-magnetic. Therefore, the magnet holder 320 , the fixing block 330 and the magnet fixture 335 are less likely to block the magnetic flux from the magnet 310 . Also, the magnet holder 320 makes it difficult for the magnetic flux from the magnet 310 to leak to the outside. Therefore, the magnetic flux from the magnet 310 is suppressed from extending toward the magnet holder 320 , the fixing block 330 and the magnet fixture 335 .

In the rotor 300, since the Halbach arrangement is used for the arrangement of the magnets 310, a yoke is not required. With this configuration, it is not necessary to provide a yoke or the like between the magnet holder 320 and the magnet 310 . That is, it is not necessary to indirectly fix the magnet 310 to the magnet holder 320 via the yoke. Therefore, magnet 310 can be directly fixed to magnet holder 320 . Therefore, the positional accuracy of the magnet 310 can be enhanced. Moreover, the fixing strength of the magnet 310 to the magnet holder 320 can be increased.

Next, a method for manufacturing rotor 300 will be described. In the process of manufacturing the rotor 300, an operator prepares the magnet holder 320, the magnet unit 316, the fixing block 330, and the magnet fixture 335 as a preparatory step.

After the preparation process, the operator performs a fixing process of fixing the magnet unit 316 to the magnet holder 320 . In the fixing process, the operator first applies an adhesive to the adhesive concave portion 481 of the magnet holder 320 . After that, the operator temporarily places the magnet unit 316 on the magnet holder 320 in alignment with the magnet projections 483 . For example, the operator assembles both the inclined magnet unit 317 and the parallel magnet unit 318 into the magnet holder 320 by aligning them in the circumferential direction CD so as to contact the magnet protrusions 483 . The worker inserts the unit inner peripheral end 316a between the holder main body 321 and the unit inner peripheral end 316a while inserting the unit outer peripheral end 316b between the engaging tapered surface 322a and the main body inner plate surface 321b. It is attached to the magnet holder 320 . The operator then fixes the fixing block 330 to the magnet holder 320 with the magnet fixture 335 .

<Constituent Group H>
104, 105, and 106, the power lead-out line 212 is electrically connected to the power bus bar 261. In FIG. The power lead-out line 212 has a connection bent portion 212f in addition to the outer circumference lead-out portion 212a and the like. 106, illustration of the rotors 300a and 300b is omitted.

Connection bent portion 212 f is a portion of power lead wire 212 located between outer circumference lead portion 212 a and coil 211 . The connection bent portion 212f is located at a position spaced apart from the outer circumference bent portion 212d on the side opposite to the power bus bar 261 in the axial direction AD. The connection bending portion 212f connects the outer circumference drawing portion 212a and the coil 211 in a bent state. The connecting bent portion 212f is bent so as to bulge radially outward, for example, is bent. The connection bent portion 212f is bent to connect the outer circumference lead portion 212a and the coil 211. As shown in FIG. The connecting bent portion 212f corresponds to a connecting bent portion. In addition, the connecting bent portion 212f may not be bent as long as it is bent, and may be curved, for example.

The power lead wire 212 has a lead base end portion 212g. The lead base end portion 212g is the end portion of the power lead wire 212 on the coil 211 side. The drawer base end portion 212g is also the end portion on the coil 211 side of the connecting bent portion 212f. The lead base end portion 212 g is included in the boundary portion between the power lead wire 212 and the coil 211 .

In grommet 255 , power lead wire 212 is inserted through grommet hole 450 . In the power lead wire 212 , the outer periphery lead portion 212 a is inserted through the grommet hole 450 . The grommet 255 has heat resistance. The grommet 255 can withstand the molding temperatures at which the coil protector 250 is molded. The molding temperature is the temperature of the molten resin for resin-molding the coil protection portion 250 . Grommet 255 can withstand the heat of the molten resin. Coil protection part 250 may be referred to as mold resin.

When the motor device 60 is driven, the temperature of the power lead wire 212 tends to rise due to the energization of the power lead wire 212 . The grommet 255 can withstand the temperature of the power lead wire 212 that rises with the driving of the motor device 60 . Grommet 255 can withstand the heat of power lead 212 .

As shown in FIGS. 106 and 107 , in the grommet 255 , the grommet hole 450 has a tightening hole portion 451 and an expansion hole portion 452 . The tightening hole portion 451 and the expansion hole portion 452 are arranged in the axial direction AD. The expansion hole portion 452 extends from the tightening hole portion 451 toward the coil protection portion 250 in the axial direction AD. The expansion hole portion 452 is a hole expanded with respect to the tightening hole portion 451 . The expansion hole portion 452 is a hole thicker than the tightening hole portion 451 . The inner diameter of the expansion hole portion 452 is larger than the inner diameter of the tightening hole portion 451 . The tightening hole portion 451 and the expansion hole portion 452 are, for example, circular in cross section.

The grommet 255 has a grommet cylinder 460 and grommet ribs 465 . The grommet tubular body 460 is a tubular portion of the grommet 255 and extends in the axial direction AD. The grommet cylinder 460 has a pair of ends arranged in the axial direction AD. One end is inside the coil protection portion 250 and is included in the embedded portion 255a. The other end is located away from the coil protection portion 250 toward the outer peripheral bent portion 212d and is included in the exposed portion 255b. The grommet cylinder 460 corresponds to the protection cylinder.

The grommet rib 465 extends from the grommet cylinder 460 in a direction perpendicular to the axial direction AD. Grommet rib 465 is provided between a pair of ends of grommet cylinder 460 . The grommet rib 465 is positioned closer to the end included in the exposed portion 255b than the end included in the embedded portion 255a. The grommet ribs 465 extend from the grommet cylinder 460 toward both sides in the circumferential direction CD. Also, the grommet rib 465 extends radially inward from the grommet cylinder 460 . The grommet rib 465 has a portion extending from the grommet cylinder 460 in one direction in the circumferential direction CD, a portion extending in the other direction in the circumferential direction CD, and a portion extending radially inward. ing.

The grommet tube 460 has a tightening tube portion 461 and an expansion tube portion 462 . The tightening tube portion 461 forms the tightening hole portion 451 . The tightening hole portion 451 is formed by the inner peripheral surface of the tightening cylinder portion 461 . The expansion tube portion 462 forms an expansion hole portion 452 . The expansion hole portion 452 is formed by the inner peripheral surface of the expansion cylinder portion 462 . The tightening tube portion 461 and the expansion tube portion 462 are arranged in the axial direction AD. The expansion tube portion 462 extends from the tightening tube portion 461 toward the coil protection portion 250 in the axial direction AD. The expansion tube portion 462 is thinner than the tightening tube portion 461 . The thick portion of the expanding tubular portion 462 is thinner than the thick portion of the tightening tubular portion 461 .

In grommet 255 , grommet body 256 includes a portion of grommet cylinder 460 and grommet rib 465 . In the grommet tubular body 460 , the grommet main body 256 includes part of the tightening tubular portion 461 and the extended tubular portion 462 . The remaining portion of the tightening tube portion 461 is included in the inner grommet portion 257 . The outer grommet portion 258 extends from the grommet rib 465 toward the fastening tube portion 461 in the axial direction AD.

As shown in FIG. 107, in the grommet hole 450, the tightening tubular portion 461 is shorter than the expanding tubular portion 462. As shown in FIG. In the axial direction AD, the length Lb1 of the tightening tubular portion 461 is smaller than the length Lb2 of the expanding tubular portion 462 . The tightening tube portion 461 is shorter than half the length of the grommet tube 460 . In the axial direction AD, the length Lb1 of the tightening tubular portion 461 is smaller than half the length Lb3 of the grommet tubular body 460 . A length dimension Lb1 of the tightening tube portion 461 is larger than the outer diameter of the tightening hole portion 451, for example. Also, the length dimension Lb1 is larger than the outer diameter of the clamping tube portion 461, for example. The tightening tube portion 461 is longer than the inner grommet portion 257 . In the grommet 255, the grommet rib 465 straddles the boundary between the tightening tubular portion 461 and the expanding tubular portion 462 in the axial direction AD. The length dimension Lb1 of the tightening tube portion 461 is sometimes referred to as tightening allowance.

As shown in FIG. 106 , in grommet 255 , embedded portion 255 a is embedded in coil protection portion 250 and exposed portion 255 b is exposed from coil protection portion 250 . The grommet 255 is embedded in the coil protection portion 250 such that the grommet main body 256 is the buried portion 255a and the inner grommet portion 257 and the outer grommet portion 258 are the exposed portion 255b. The grommet 255 covers and protects the power lead-out line 212 at least by the embedded portion 255a. The buried portion 255a corresponds to the protective buried portion.

The embedded portion 255 a extends in the coil protection portion 250 beyond the protection axis Cp toward the side opposite to the power bus bar 261 . The protection axis Cp is a straight imaginary line passing through the center of the coil protection portion 250 and extending in the radial direction RD. The protection axis Cp corresponds to the centerline of the coil protection portion 250 . In the axial direction AD, the length La2 of the embedded portion 255a is larger than half the length La1 of the coil protection portion 250. As shown in FIG. The length La2 of the embedded portion 255a is larger than the length La3 of the portion of the coil protection portion 250 that is aligned with the embedded portion 255a in the axial direction AD. The embedded portion 255 a is longer than the inner grommet portion 257 . A length La2 of the embedded portion 255a is larger than a length La4 of the inner grommet portion 257 in the axial direction AD. 106, illustration of the outer grommet portion 258 is omitted.

In grommet 255 , a portion of grommet cylinder 460 is in close contact with power lead wire 212 . In the grommet tubular body 460, the tightening tubular portion 461 is in close contact with the outer peripheral drawing portion 212a. The tightening tube portion 461 covers the outer circumference lead-out portion 212a while being in close contact with the outer circumference lead-out portion 212a. The inner diameter of the tightening tube portion 461 is slightly smaller than the outer diameter of the outer circumference drawing portion 212a. The tightening tubular portion 461 is attached to the outer peripheral lead portion 212 a in an elastically deformed state, and is in close contact with the outer peripheral lead portion 212 a due to the restoring force of the grommet 255 . Due to the restoring force of the grommet 255, it is difficult for a gap to occur between the tightening tubular portion 461 and the outer peripheral drawn-out portion 212a. The tightening cylinder portion 461 corresponds to the tight cover portion.

In the grommet tubular body 460, the extended tubular portion 462 is separated from the outer peripheral lead portion 212a to the outer peripheral side. The expansion tubular portion 462 is spaced outward from the outer peripheral drawing portion 212a in the radial direction of the expansion tubular portion 462 . The expansion tubular portion 462 covers the outer peripheral lead portion 212a while being separated from the outer peripheral surface of the outer peripheral lead portion 212a. A gap is formed between the expansion tube portion 462 and the outer peripheral lead portion 212a. The inner diameter of the expansion tube portion 462 is larger than the outer diameter of the outer circumference drawing portion 212a. The expansion cylinder portion 462 corresponds to the gap covering portion.

A part of the coil protection part 250 is inserted between the expansion cylinder part 462 and the outer circumference drawing part 212a. The coil protection section 250 has a protection main body 251 and a protection entry section 252 . The protection entry portion 252 is in a state of being inserted so as to enter the gap between the expansion cylinder portion 462 and the outer circumference drawing portion 212a. The protection entry 252 extends from the protection body 251 in the axial direction AD. The protective entry portion 252 is in close contact with both the inner surface of the expansion cylinder portion 462 and the outer surface of the outer peripheral drawing portion 212a. The protective entry portion 252 is in a state in which the inner surface of the expansion cylinder portion 462 and the outer surface of the outer peripheral drawing portion 212a are joined. The protection entry portion 252 is in a state of being filled in the gap between the expansion cylinder portion 462 and the outer circumference drawing portion 212a. The protection entry portion 252 corresponds to the entry portion.

The protection entrance portion 252 is in a state of covering the outer circumference drawing portion 212a. The protective entry portion 252 extends annularly along the outer peripheral surface of the outer peripheral drawn-out portion 212a. The meat portion of protective entry 252 is thinner than the meat portion of extension tube 462 . In the protective entry portion 252, the thickness dimension of the meat portion is smaller than the outer diameter of the outer circumference drawing portion 212a.

The coil protection portion 250 has a first protection end portion 250a and a second protection end portion 250b. The coil protection part 250 has a pair of ends aligned in the axial direction AD as protection ends 250a and 250b. Of the pair of ends, the end on the power busbar 261 side in the axial direction AD is the first protection end 250a, and the end on the side opposite to the power busbar 261 is the second protection end 250b. The protection end portions 250a and 250b are end surfaces of the coil protection portion 250 and extend in a direction perpendicular to the axial direction AD.

The coil 211 has a first coil end portion 211a and a second coil end portion 211b. The coil 211 has a pair of ends aligned in the axial direction AD as coil ends 211a and 211b. Of the pair of ends, the end on the power busbar 261 side in the axial direction AD is the first coil end 211a, and the end on the side opposite to the power busbar 261 is the second coil end 211b. The coil ends 211 a and 211 b are formed by a coil wire 220 . The first coil end portion 211a is located on the first rotor 300a side in the axial direction AD and corresponds to the rotor side end portion. The second coil end portion 211b is on the side opposite to the first rotor 300a in the axial direction AD and corresponds to the opposite end portion.

The coil ends 211a and 211b are provided between the first protection end 250a and the second protection end 250b in the axial direction AD. The first coil end portion 211a is located away from the first protective end portion 250a toward the second coil end portion 211b. The first coil end portion 211a is separated from the first protective end portion 250a by at least the thickness of the bobbin flange 242 (see FIG. 63, etc.). The second coil end portion 211b is located away from the second protective end portion 250b toward the first coil end portion 211a. The second coil end 211b is separated from the second protective end 250b by at least the thickness of the bobbin flange 242 .

The power lead-out line 212 is drawn out from the second coil end portion 211b of the coil 211 . The connection bent portion 212f including the lead base end portion 212g includes a portion extending radially outward from the coil 211, a portion extending from the outer circumference lead portion 212a toward the second coil end portion 211b in the axial direction AD, have.

The connection bent portion 212f is located at a position spaced apart from the first coil end portion 211a toward the second coil end portion 211b in the axial direction AD. Therefore, the drawer base end portion 212g is located at a position separated from the first coil end portion 211a toward the second coil end portion 211b. In addition, the connection bent portion 212f is positioned away from the protection axis Cp toward the second coil end portion 211b. Therefore, the drawer base end portion 212g is positioned away from the protection axis Cp toward the second coil end portion 211b. Furthermore, the connection bent portion 212f is located at a position spaced apart from the grommet 255 toward the second coil end portion 211b in the axial direction AD.

The grommet 255 is provided at a position straddling the first protective end portion 250a in the axial direction AD. The exposed portion 255b extends from the first protective end portion 250a toward the side opposite to the coil 211 in the axial direction AD. The embedded portion 255a extends from the first protective end portion 250a toward the coil 211 in the axial direction AD.

The grommet 255 is provided at a position straddling the first coil end portion 211a in the axial direction AD. The exposed portion 255b is located on the side opposite to the coil 211 from the first coil end portion 211a. The embedded portion 255a is positioned across the first coil end portion 211a in the axial direction AD. The grommet 255 extends beyond the protection axis Cp toward the second coil end portion 211b in the axial direction AD.

As shown in FIGS. 107 and 108, grommet 255 has grommet groove 466 . Grommet groove 466 is a recess provided on the outer surface of grommet 255 . The outer surface of grommet 255 includes cylindrical side surface 460b. The cylinder side surface 460 b is included in the outer surface of the grommet cylinder 460 . The cylindrical side surfaces 460b extend in a direction orthogonal to the circumferential direction CD and are arranged in a pair via the grommet holes 450 in the circumferential direction CD. The tube side surface 460 b is included in the outer surface of the expansion tube portion 462 . The cylinder side surface 460 b extends from the grommet rib 465 toward the side opposite to the fastening cylinder portion 461 . A portion of the expansion cylinder portion 462 where the grommet groove 466 is provided is included in the embedded portion 255a. The grommet groove 466 is provided on the outer surface of the embedded portion 255a.

A grommet groove 466 is provided on each of the pair of cylinder side surfaces 460b. A plurality of grommet grooves 466 are provided on the cylindrical side surface 460b. The plurality of grommet grooves 466 are arranged in the axial direction AD on each of the pair of cylinder side surfaces 460b. The grommet groove 466 is a groove portion open in the circumferential direction CD. The grommet groove 466 extends in the radial direction RD. The grommet groove 466 is open radially inward and radially outward.

The grommet 255 has a cylindrical tapered surface 460a. The tubular tapered surface 460 a is included in the outer surface of the grommet tubular body 460 . The cylindrical tapered surface 460a faces radially inward. The cylindrical tapered surface 460a is inclined with respect to the rib crossing surface 465b so as to face the side opposite to the rib crossing surface 465b in the axial direction AD. The cylinder tapered surface 460a is sometimes referred to as a cylinder inclined surface. The cylindrical tapered surface 460 a is included in the outer surface of the tightening cylindrical portion 461 . The cylindrical tapered surface 460a extends in a tapered shape from the grommet rib 465 in the axial direction AD. The thickness dimension of the tightening tubular portion 461 in the radial direction RD gradually decreases toward the side opposite to the grommet rib 465 in the axial direction AD due to the tubular tapered surface 460a.

As shown in FIG. 109, a portion of the coil protection portion 250 has entered the grommet groove 466 . The grommet 255 and the coil protector 250 are engaged with each other. The engaging portion where the grommet 255 and the coil protection portion 250 are engaged prevents the grommet 255 from coming off from the coil protection portion 250 .

The coil protection portion 250 has a protection engaging portion 253 . The protective engaging portion 253 is in a state of being inserted into the grommet groove 466. As shown in FIG. The protection engaging portion 253 extends from the protection body 251 toward the inside of the grommet groove 466 . The protective engagement portion 253 is in close contact with the inner surface of the grommet groove 466 . The protection engaging portion 253 is in a state of being engaged with the grommet groove 466 . The grommet groove 466 is open in a circumferential direction CD, which is a direction perpendicular to the axial direction AD, and extends in a radial direction RD, which is a direction perpendicular to the axial direction AD. The grommet groove 466 corresponds to the embedded engaging portion, and the protective engaging portion 253 corresponds to the engaged portion.

The grommet 255 is in a state of being caught by the first circumferential holding portion 172 in the motor housing 70 . The first circumferential holding portion 172 has a first concave portion 172a, a first inner peripheral surface 172b and a first extending surface 172c. The first inner peripheral surface 172 b and the first extending surface 172 c are included in the outer surface of the first circumferential holding portion 172 . The first inner peripheral surface 172b is a surface of the outer surface of the first circumferential holding portion 172 facing radially inward. The first extending surface 172c is a surface of the outer surface of the first circumferential holding portion 172 facing the power bus bar 261 in the axial direction AD. The first recess 172a is a recess provided in the first inner peripheral surface 172b, and is recessed radially outward from the first inner peripheral surface 172b. The first recessed portion 172a opens toward the first extending surface 172c in the axial direction AD. The first concave portion 172a extends from the extraction groove portion 171a toward the first extension surface 172c in the axial direction AD.

The grommet 255 is in a state of being inserted into the pull-out groove portion 171a and the first recess portion 172a. In the grommet 255, the expansion cylinder portion 462 is inserted inside the pull-out groove portion 171a. The grommet rib 465 is recessed inside the first recess 172a. The grommet rib 465 is hooked on the first recess 172a from the side opposite to the shaft holding portion 174 in the axial direction AD. The grommet rib 465 is in close contact with the inner surface of the first recess 172a.

The grommet 255 has a rib extending surface 465a and a rib intersecting surface 465b. The rib extending surface 465 a and the rib intersecting surface 465 b are included on the outer surface of the grommet rib 465 . The rib extending surface 465a extends from the grommet tubular body 460 in a direction orthogonal to the axial direction AD. The grommet 255 is integrated with the first circumferential holding portion 172 . The rib extension surface 465a extends in the circumferential direction CD as if integrated with the first extension surface 172c. For example, the rib extension surface 465a and the first extension surface 172c are surfaces that extend so as to be continuous with each other. The rib crossing surface 465b extends in the circumferential direction CD as if integrated with the first inner peripheral surface 172b. For example, the rib intersection surface 465b and the first inner peripheral surface 172b are surfaces that extend so as to be continuous with each other.

Next, among the methods of manufacturing the motor device 60, a method of manufacturing the coil protection portion 250 with the grommet 255 will be described. In the process of manufacturing the coil protection part 250 with the grommet 255, an operator prepares the coil unit 210, the motor housing 70 and the grommet 255 as a preparatory process. At the stage of the preparation process, the power lead-out line 212 of the coil unit 210 is in a state of extending linearly in the axial direction AD.

After the preparation process, the operator performs the grommet process, the mounting process, and the mold process. In the grommet process, the worker attaches the grommet 255 to the power lead wire 212 of the coil unit 210 . The operator inserts the power lead wire 212 through the grommet hole 450 from the expanded hole portion 452 side. In grommet 255 , the inner peripheral surface of tightening tubular portion 461 tends to be in close contact with power lead wire 212 , while a gap is likely to be formed between the inner peripheral surface of extended tubular portion 462 and power lead wire 212 . For this reason, for example, unlike the present embodiment, the contact area where the grommet 255 and the power lead wire 212 are in close contact becomes smaller compared to the configuration where the entire inner peripheral surface of the grommet cylinder 460 is in close contact with the power lead wire 212 . Therefore, it is easier for the operator to reduce the difficulty of inserting the power lead wire 212 through the grommet hole 450 .

An operator attaches the coil unit 210 and the grommet 255 to the motor housing 70 in the attachment process. With the coil unit 210 installed inside the motor housing 70, the operator fits the grommet 255, through which the power lead wire 212 passes, into the lead groove 171a and the first recess 172a. The grommet 255 is in close contact with the inner surfaces of the pull-out groove portion 171a and the first recess portion 172a due to the restoring force generated by elastic deformation. The grommet 255 is located in a position spaced apart from the connection bent portion 212f in the axial direction AD with respect to the power lead wire 212 while being fitted in the lead-out groove portion 171a and the first recess portion 172a. The operator inserts the power lead wire 212 together with the grommet 255 into the lead groove portion 171a.

In the mold process, an operator attaches a mold to the motor housing 70 to which the coil unit 210 and the grommet 255 are attached. Before the operator attaches the mold to the motor housing 70, the grommet 255 protrudes from the pull-out groove 171a and the first recess 172a. The mold has an axial pressing surface that presses the grommet 255 in the axial direction AD. The shaft pressing surface faces the rib extension surface 465a in the axial direction AD, and presses the rib extension surface 465a such that the rib extension surface 465a and the first extension surface 172c are flush with each other. The shaft pressing surface elastically deforms the grommet 255 in the axial direction AD so that the grommet rib 465 enters the first recess 172a.

The mold has a radial pressing surface that presses the grommet 255 radially outward. The radial pressing surface faces radially outward and presses the rib intersecting surface 465b so that the rib intersecting surface 465b and the first inner peripheral surface 172b are flush with each other. The radial pressing surface elastically deforms the grommet 255 in the radial direction RD so that the grommet rib 465 enters the first recess 172a.

The operator inserts the mold into the motor housing 70 from the tightening cylinder portion 461 side toward the extension cylinder portion 462 in the axial direction AD. The operator operates so that the axial pressing surface presses the rib extending surface 465a and contacts the first extending surface 172c, and the radial pressing surface presses the rib intersecting surface 465b and contacts the first inner peripheral surface 172b. Then, an operation is performed so that the mold is hooked on the first circumferential holding portion 172 . In this operation, since the tapered surface 460a is inclined with respect to the rib crossing surface 465b, it is difficult for the shaft pressing surface to get caught on the tapered surface 460a before reaching the rib extending surface 465a.

After the molding process, the operator performs a molding process for molding the coil protection part 250 . In the molding process, an operator pours molten resin into the motor housing 70 and the mold. A molten resin is sometimes called a resin mold. In the motor housing 70, the grommet 255 prevents the molten resin from leaking from the first concave portion 172a. Since the grommet rib 465 is in close contact with the inner surface of the first recess 172a, the entry of the molten resin between the grommet rib 465 and the first recess 172a is restricted. In the grommet 255 , since a gap is generated between the expansion tube portion 462 and the power lead-out line 212 , the molten resin enters the inside of the expansion hole portion 452 . On the other hand, since the tightening cylinder portion 461 is in close contact with the power lead-out line 212 , the molten resin is prevented from entering the inside of the tightening hole portion 451 . Therefore, leakage of the molten resin from the grommet hole 450 is restricted.

When the molten resin is injected into the motor housing 70 and the mold, injection pressure is applied to the coil unit 210 and the grommet 255 . The injection pressure is the pressure for injecting the molten resin into the motor housing 70 and the mold. In coil unit 210, grommet 255 prevents power lead-out line 212 from being pressed by the injection pressure of the molten resin and unintentionally deformed. For example, in the power lead-out line 212, the buried portion 255a suppresses unintentional deformation of the portion between the connecting bent portion 212f and the exposed portion 255b. Therefore, the contact of the power lead wire 212 with the motor housing 70 is suppressed, and as a result, the occurrence of a case short circuit is suppressed. A case short circuit is a short circuit caused by contact of the conductor portion 221 of the power lead wire 212 with the motor housing 70 .

In the buried portion 255 a , there is a gap between the expansion tube portion 462 and the power lead wire 212 , so that the expansion tube portion 462 can deform relative to the power lead wire 212 . Therefore, the injection pressure of the molten resin applied to the expansion tubular portion 462 is less likely to be applied to the power lead-out line 212 due to the deformation of the expansion tubular portion 462 .

The operator removes the mold from the motor housing 70 after the molten resin is solidified and the coil protection portion 250 is molded. After that, the operator bends the power lead wire 212 to form the inner peripheral lead portion 212b and the like.

<Constructive group I>
As described for the configuration groups Bd and Be, the rotor 300 is attached to the shaft 340 . Shaft 340 is made of aluminum alloy, titanium, resin, CFRP, or the like. In this embodiment, the shaft 340 is made of titanium.

In FIG. 110, the spokes 343 extend radially outward from the shaft body 341 and correspond to rotational extensions. Spokes 343 are provided between shaft body 341 and rim 344 . The spokes 343 connect the shaft body 341 and the rim 344 while extending in the radial direction RD. The spokes 343 are in a state of being bridged between the shaft body 341 and the rim 344 via the rim inner peripheral holes 349 . The spokes 343 are provided between the first rotor 300a and the second rotor 300b in the axial direction AD. Spokes 343 are connected to a portion of rim 344 between first rotor 300a and second rotor 300b.

As shown in FIG. 37, a plurality of spokes 343 are arranged in the circumferential direction CD. A plurality of spokes 343 radially extend around the motor axis Cm. Two spokes 343 adjacent in the circumferential direction CD are separated from each other in the circumferential direction CD. The height dimension of the spokes 343 is smaller than the height dimension of the rim 344 in the axial direction AD.

In FIG. 110, the rim 344 is formed in a plate shape as a whole and extends in a direction perpendicular to the radial direction RD. The rim 344 extends in the circumferential direction CD along the holder inner peripheral end 320a. The rim 344 extends from the spokes 343 toward both sides in the axial direction AD. For example, the rim 344 protrudes from the spokes 343 toward the first rotor 300a and protrudes from the spokes 343 toward the second rotor 300b. The rim 344 supports the rotor 300 against the attractive force F1 between the coil 211 and the magnet 310, and corresponds to a rotation support. The rim 344 supports the first rotor 300a and the second rotor 300b against the attraction force F1 generated in each of the first rotor 300a and the second rotor 300b.

The rim 344 is provided at a position closer to the holder outer peripheral end 320b than the motor axis Cm in the radial direction RD. That is, the rim 344 is provided at a position near the outer peripheral edge of the rotor 300 . For example, the distance LI1 between the rim 344 and the outer circumference virtual line Vm1 is smaller than the distance LI2 between the rim 344 and the motor axis Cm. Peripheral virtual line Vm1 is a straight virtual line extending parallel to motor axis Cm through holder outer peripheral end 320b.

The distance LI2 is smaller than the distance LI3 between the peripheral virtual line Vm1 and the motor axis Cm, but is larger than the distance LI4 between the intermediate virtual line Vm2 and the motor axis Cm. The intermediate imaginary line Vm2 is a straight imaginary line extending parallel to the motor axis Cm through the middle of the outer circumference imaginary line Vm1 and the motor axis Cm in the radial direction RD. Distance LI1 is smaller than both distances LI3 and LI4. A distance LI1 is a separation distance between the rim 344 and the holder outer peripheral end 320b in the radial direction RD. Distances LI 1 and LI 2 are both to the center of rim 344 . Holder outer peripheral end 320 b is the outer peripheral end of magnet holder 320 and the outer peripheral end of rotor 300 .

The rim 344 is provided at a position closer to the magnet 310 than the shaft body 341 in the radial direction RD. For example, distance LI5 between rim 344 and magnet 310 is less than distance LI6 between rim 344 and shaft body 341 . A distance LI5 is a separation distance between the center of the rim 344 and the unit inner peripheral end 316a in the radial direction RD. A distance LI6 is a separation distance between the center of the rim 344 and the inner peripheral ends of the spokes 343 in the radial direction RD.

The rim 344 is provided at a position closer to the holder inner peripheral end 320a than to the holder outer peripheral end 320b in the radial direction RD. For example, the distance LI8 between the rim 344 and the holder inner peripheral end 320a is smaller than the distance LI7 between the rim 344 and the holder outer peripheral end 320b. Distances LI 7 and LI 8 are both to the center of rim 344 .

The rim 344 is provided between the holder inner peripheral end 320a and the magnet 310 in the radial direction RD. The rim 344 is located away from both the holder inner peripheral edge 320 a and the magnet 310 . Holder inner peripheral end 320 a is the inner peripheral end of magnet holder 320 and the inner peripheral end of rotor 300 . The rim 344 is provided at a position closer to the magnet 310 than the holder inner peripheral end 320a in the radial direction RD. For example, the distance LI5 between the rim 344 and the magnet 310 is smaller than the distance LI8 between the rim 344 and the holder inner peripheral end 320a.

As described in the above configuration groups Bd and Be, the holder fixture 350 secures the magnet holder 320 to the shaft flange 342 . Magnet holders 320 are fixed to spokes 343 on shaft flange 342 . A holder fixture 350 is screwed into the flange fixing hole 345 . Flange fixing holes 345 are portions of spokes 343 to which magnet holders 320 are fixed. The holder fixture 350 is provided at a position away from the rim 344 on the side opposite to the magnet 310 in the radial direction RD. The holder fixture 350 corresponds to a rotation fixture.

The holder fixture 350 fixes the magnet holder 320 to the spoke 343 while pressing the magnet holder 320 toward the spoke 343 . Holder fixture 350 applies pressing force F<b>3 to magnet holder 320 in a direction in which magnet holder 320 approaches spoke 343 . In the magnet holder 320, a bending stress F2 acting to separate the magnet holder 320 from the coil 211 is generated by the pressing force F3. This bending stress F2 restricts the magnet holder 320 from bending toward the coil 211 against the attractive force F1 between the coil 211 and the magnet 310 . In the rotor 300, the action position where the attraction force F1 acts is the power point.

In the magnet holder 320, the bending stress F2 is generated by the rim tip portion 344a serving as a fulcrum for the pressing force F3. The rim tip portion 344 a serves as a contact surface that contacts the magnet holder 320 . Since the attraction force F1, the bending stress F2, and the pressing force F3 are all forces directed in the axial direction AD, the force applied to the rim 344 also tends to be a force directed in the axial direction AD. Therefore, even if the rim 344 is thin in the radial direction RD, the rim 344 is less likely to be deformed by the force applied to the rim 344 . Therefore, the weight of the shaft 340 is reduced by making the rim 344 as thin as possible.

For example, rim 344 is thinner than spokes 343 . Specifically, the thickness dimension of the rim 344 in the radial direction RD is smaller than the thickness dimension of the spokes 343 in the axial direction AD. Also, the thickness dimension of the rim 344 is smaller than the distance LI5 between the magnet 310 and the rim 344 in the radial direction RD.

Next, among the methods of manufacturing the motor device 60, a method of manufacturing the shaft 340 will be described. In the process of manufacturing the shaft 340, an operator prepares a shaft base material 490 as shown in FIG. 111 as a preparatory step. The shaft base material 490 is a base material for manufacturing the shaft 340, and is a rectangular parallelepiped member, for example. The shaft base material 490 is made of aluminum alloy, titanium, resin, CFRP, or the like. In this embodiment, a base material made of titanium is used as the shaft base material 490 .

After the preparation process, the worker performs a processing process for processing the shaft base material 490 into the shape of the shaft 340 . In the machining process, the worker cuts the shaft base material 490 to manufacture the shaft 340 from the shaft base material 490 . Grinding may be performed in the processing step. In the manufacture of the shaft 340, using a base material that is as small as possible as the shaft base material 490 facilitates improving the material yield.

<Constituent group K>
The motor device 60 has the resolver 421 as described in the configuration group Ag. As shown in FIGS. 112 and 113, the resolver 421 is provided on the shaft body 341. As shown in FIGS. The resolver 421 detects the rotation state of the rotor 300 by detecting the rotation state of the shaft body 341 . The resolver 421 detects the rotation angle as the rotation state of the shaft body 341 . The resolver 421 corresponds to the rotation detection section, and the shaft body 341 corresponds to the rotating shaft section. The resolver 421 as a whole extends in the circumferential direction CD along the body outer peripheral surface 341a. The body outer peripheral surface 341 a is the outer peripheral surface of the shaft body 341 . The resolver 421 has an annular shape and is provided radially outside the shaft body 341 .

The resolver 421 has a resolver stator 421a and a resolver rotor 421b. In the resolver 421, the rotation angle of the shaft body 341 is detected by rotating the resolver rotor 421b relative to the resolver stator 421a.

The resolver stator 421a is provided on the motor housing 70 side. The resolver stator 421a is fixed to the rear frame 370, for example. The resolver stator 421a extends along the rear frame 370 in the circumferential direction CD. The resolver stator 421 a is formed in an annular shape and is provided radially outside the shaft body 341 .

The resolver rotor 421b is provided on the rotor 300 side. The resolver rotor 421b is fixed to the shaft body 341 and rotates together with the shaft body 341 around the motor axis Cm. The resolver rotor 421b extends in the circumferential direction CD along the body outer peripheral surface 341a. The resolver rotor 421b is formed in an annular shape, and is provided radially inside the resolver stator 421a, for example.

The resolver 421 is provided between the power busbar 261 and the shaft body 341 in the radial direction RD. The resolver 421 is located radially inwardly away from the power busbar 261 . The resolver 421 is positioned closer to the shaft body 341 than the power busbar 261 in the radial direction RD. In radial direction RD, the positional relationship between resolver 421 and power busbar 261 is substantially the same as the positional relationship between resolver 421 and busbar unit 260 . For example, the resolver 421 is located radially inwardly away from the busbar unit 260 by being located radially inwardly away from the power busbar 261 .

The busbar unit 260 has a rectangular cross section. In the cross section of the busbar unit 260, the long side extends in the radial direction RD and the short side extends in the axial direction AD. In the cross section of the busbar unit 260, the length dimension in the radial direction RD is greater than the length dimension in the axial direction AD. The outer surface of the busbar unit 260 is formed by a busbar protection portion 270 . In busbar unit 260 , busbar protection portion 270 is fixed to rear frame 370 .

The resolver 421 is in a state of entering the unit space 264 . A unit space 264 is an inner space of the busbar unit 260 . The unit space 264 is a space surrounded on all four sides by the unit inner peripheral surface 260a. The unit space 264 is a space between the unit inner peripheral surface 260a and the main body outer peripheral surface 341a in the radial direction RD. The unit inner peripheral surface 260 a is the inner peripheral surface of the busbar unit 260 . The unit inner peripheral surface 260a extends in a direction perpendicular to the radial direction RD and annularly extends in the circumferential direction CD. At least part of the resolver 421 is housed in the unit space 264 . In this embodiment, substantially the entire resolver 421 is accommodated in the unit space 264 in the axial direction AD. At least part of the resolver connector 423 and the resolver cover 424 are accommodated in the unit space 264 . Note that the resolver connector 423 and the resolver cover 424 do not have to be housed in the unit space 264 .

The resolver 421 is in a state of being radially inside the power bus bar 261 . In the busbar unit 260, a plurality of busbar main bodies 262 are stacked in the axial direction AD. The resolver 421 extends in the axial direction AD so as to straddle the plurality of busbar main bodies 262 . The resolver 421 extends toward both the stator 200 side and the opposite side of the stator 200 from the plurality of bus bar main bodies 262 . The resolver 421 is inserted between the busbar main body 262 and the shaft main body 341 . The space inside the power bus bar 261 is included in the unit space 264 . At least part of the resolver 421 is accommodated in the unit space 264 by being accommodated in the inner space of the power bus bar 261 .

The power bus bar 261 is energized and connected to the coil 211 . The power busbar 261 is connected to the coil 211 via, for example, a power lead 212 and a busbar lead 265 . The power busbar 261 is provided at a position spaced radially outward from the resolver 421 . The power bus bar 261 is positioned closer to the motor inner peripheral surface 70b than the resolver 421 in the radial direction RD. The electric power busbar 261 corresponds to an energization busbar. Power busbars 261 are sometimes referred to as conducting conductors and power conductors.

Resolver 421 and power bus bar 261 are arranged in radial direction RD along rear frame 370 . Resolver 421 and power bus bar 261 are on the opposite side of stator 200 and rotor 300 via rear frame 370 . Rear frame 370 covers stator 200 and rotor 300 in the axial direction AD. The resolver 421 and power busbar 261 are fixed to the motor housing 70 via the rear frame 370 . The motor housing 70 corresponds to the electric housing, and the rear frame 370 corresponds to the electric cover.

The power bus bar 261 is provided at a position aligned with the coil portion 215 in the axial direction AD. Power bus bar 261 extends in the direction in which multiple coil portions 215 are arranged. The plurality of coil portions 215 are arranged in a line along the circumferential direction CD. Power bus bar 261 extends in circumferential direction CD along the row of coil portions 215 .

As described in the configuration group Aa, the motor device 60 has the neutral point bus bar 290 . The resolver 421 and the power busbar 261 are on the opposite side of the neutral point busbar 290 via the first rotor 300a. The resolver 421 and the power busbar 261 are provided at positions separated from the neutral point busbar 290 in the axial direction AD. In the axial direction AD, a rear frame 370 and spokes 343 are provided in addition to the first rotor 300 a between the resolver 421 and power busbar 261 and the neutral point busbar 290 . Spokes 343 support rotor 300 while extending radially outward from shaft body 341 . Spokes 343 correspond to the rotor support.

The neutral point bus bar 290 is electrically connected to the neutral point 65 . The neutral point bus bar 290 is on the opposite side of the resolver 421 and the power bus bar 261 via the first rotor 300a, the rear frame 370 and the spokes 343 in the axial direction AD. Neutral point bus bar 290 is provided between first rotor 300a and second rotor 300b in axial direction AD. The neutral point bus bar 290 is positioned closer to the second rotor 300b than to the first rotor 300a in the axial direction AD.

Neutral point bus bar 290 is between resolver 421 and power bus bar 261 in radial direction RD. The neutral point busbar 290 is located radially outwardly away from the resolver 421 . Neutral point bus bar 290 is located radially inwardly away from power bus bar 261 . Neutral point bus bar 290 is positioned closer to power bus bar 261 than resolver 421 in radial direction RD. The neutral point bus bar 290 is between the coil portion 215 and the shaft flange 342 in the radial direction RD. The neutral point bus bar 290 is located radially inside the coil portion 215 . The neutral point bus bar 290 is located radially outwardly away from the shaft flange 342 .

Shaft flange 342 is located between resolver 421 and neutral point bus bar 290 . For example, when the resolver 421 and the neutral point bus bar 290 are connected by a virtual line at the shortest distance, this virtual line and the shaft flange 342 intersect. Shaft 340 is a non-magnetic member and is made of a non-magnetic material. Non-magnetic materials forming the shaft 340 include aluminum alloys, titanium, resins, CFRP, and the like. In the shaft 340, at least the shaft flange 342 is a non-magnetic portion. The shaft 40 easily restricts the magnetic field generated by the current flowing through the neutral point bus bar 290 from reaching the resolver 421 . For example, the shaft flange 342 suppresses the occurrence of noise in the detection signal of the resolver 421 due to the generation of electromagnetic waves as the neutral point bus bar 290 is energized and the electromagnetic waves reaching the resolver 421 .

Rear frame 370 is a non-magnetic member and is made of a non-magnetic material. Non-magnetic materials forming the rear frame 370 include aluminum alloy, titanium, resin, CFRP, and the like. The rear frame 370 easily restricts the magnetic field generated by the energization of the neutral point bus bar 290 and the coil 211 from reaching the resolver 421 . Also, the rear frame 370 can easily restrict the magnetic field generated by the magnet 310 from reaching the resolver 421 .

In the rotor 300 , the Halbach arrangement of the magnets 310 makes it difficult for the magnetic flux from the magnets 310 to leak out of the magnet holder 320 . For example, in the rotor 300, leakage magnetic flux is less likely to occur radially inward. Further, in the rotor 300, magnetic flux leakage to the opposite side of the magnet 310 via the magnet holder 320 in the axial direction AD is less likely to occur.

<Constituent group L>
As shown in FIG. 114, the magnet 310 has a magnet inner peripheral end 310a, a magnet outer peripheral end 310b, a magnet side surface 310c, an inner peripheral tapered surface 310d and an outer peripheral tapered surface 310e. The magnet 310 also has a first magnet surface 310g and a second magnet surface 310h. The magnet inner peripheral end 310a, the magnet outer peripheral end 310b, the magnet side surface 310c, the tapered surfaces 310d and 310e, and the magnet surfaces 310g and 310h are included in the outer surface of the magnet 310. FIG. The magnet inner peripheral end 310 a is the radially inner end face of the magnet 310 . The inner peripheral tapered surface 310d is included in the magnet inner peripheral end 310a. The magnet outer peripheral end 310 b is a radially outer end face of the magnet 310 . The outer peripheral tapered surface 310e is included in the magnet outer peripheral end 310b.

As described in the configuration group Bb, the magnet unit 316 has a unit inner peripheral end 316a, a unit outer peripheral end 316b, a unit side surface 316c, an inner peripheral tapered surface 316d and an outer peripheral tapered surface 316e. Further, as described in the configuration group G, the magnet unit 316 has a first unit surface 316g and a second unit surface 316h.

The outer surface of the magnet unit 316 is formed by a plurality of magnets 310 that the magnet unit 316 has. The outer surface of magnet unit 316 includes the outer surfaces of a plurality of magnets 310 . Magnet inner peripheral end 310a is included in unit inner peripheral end 316a. The magnet outer peripheral edge 310b is included in the unit outer peripheral edge 316b. Magnet side 310c is included in unit side 316c. An inner tapered surface 310 d of the magnet 310 is included in an inner tapered surface 316 d of the magnet unit 316 . The outer tapered surface 310 e of the magnet 310 is included in the outer tapered surface 316 e of the magnet unit 316 . The first magnet face 310g is included in the first unit face 316g. The second magnet surface 310h is included in the second unit surface 316h.

The magnet unit 316 has a side tapered surface 316f (see FIG. 98). Magnet 310 has a portion included in side tapered surface 316f. This portion is included in the outer surface of magnet 310 .

In the magnet unit 316, a plurality of magnets 310 are adhered with an adhesive. The adhesive is made of a resin material, an adhesive, or the like. In the magnet 310, a pair of magnet side surfaces 310c are arranged in the circumferential direction CD. Two magnets 310 adjacent to each other in the circumferential direction CD are adhered with their respective magnet side surfaces 310c overlapped.

As shown in FIG. 115, rotor 300 has magnet boundary 501 . A magnet boundary portion 501 is a boundary portion between two magnets 310 adjacent to each other in the circumferential direction CD. A plurality of magnet boundary portions 501 are arranged in the circumferential direction CD. The plurality of magnet boundaries 501 includes an inner unit boundary 501a and an outer unit boundary 501b.

The unit inner boundary 501 a is included in the magnet unit 316 . The unit inner boundary portion 501 a is a boundary portion between two magnets 310 adjacent to each other in the circumferential direction CD in one magnet unit 316 . A plurality of unit inner boundary portions 501 a are arranged in the rotor 300 in the circumferential direction CD. Unit outer boundary 501 b is not included in magnet unit 316 . The unit outer boundary portion 501b is also a boundary portion between two magnet units 316 adjacent to each other in the circumferential direction CD. A plurality of unit outer boundary portions 501b are arranged in the rotor 300 in the circumferential direction CD. The multiple unit outer boundaries 501b include an inner boundary BI and an outer boundary BO. The unit outer boundary 501b is an inner boundary BI or an outer boundary BO.

Two magnets 310 adjacent to each other in the circumferential direction CD through the unit inner boundary 501a are oriented in the same direction in the circumferential direction CD. These magnets 310 are oriented, for example, toward the inner boundary BI in the circumferential direction CD. In one magnet unit 316, all the magnets 310 are oriented toward the inner boundary BI in the circumferential direction CD. In this way, repulsive force is less likely to occur between two magnets 310 adjacent to each other in the circumferential direction CD via the unit inner boundary portion 501a. The orientation of magnet 310 refers to the direction of magnetization of magnet 310 .

Two magnets 310 adjacent to each other in the circumferential direction CD through the unit outer boundary 501b are oriented in opposite directions to each other in the circumferential direction CD. For example, the orientations of the first inner magnet 312a and the second inner magnet 312b, which are adjacent to each other across the inner boundary BI as the unit outer boundary 501b, are directed toward each other. In this manner, the orientations of the first inner magnet 312a and the second inner magnet 312b face each other. Also, the first outer magnet 313a and the second outer magnet 313b are oriented away from each other via the outer boundary BO as the unit outer boundary 501b. In this manner, the first outer magnet 313a and the second outer magnet 313b are oriented in opposite directions. As described above, the two magnets 310 adjacent to each other in the circumferential direction CD through the unit outer boundary portion 501b are likely to generate a repulsive force.

As shown in FIG. 114, the magnet unit 316 has at least one of an inclined magnet 314 and a parallel magnet 315 as the magnet 310 . For example, tilted magnet unit 317 includes both tilted magnets 314 and parallel magnets 315 . In the inclined magnet unit 317, the inclined magnets 314 and the parallel magnets 315 are arranged in the circumferential direction CD. The parallel magnet unit 318 has only the parallel magnet 315 out of the tilt magnet 314 and the parallel magnet 315 . In the parallel magnet unit 318, a plurality of parallel magnets 315 are arranged in the circumferential direction CD.

In the inclined magnet 314, a pair of magnet side surfaces 310c are inclined with respect to each other. The pair of magnet side surfaces 310c are, for example, inclined radially outward and away from each other. In the inclined magnet 314, the distance between the pair of magnet side surfaces 310c gradually increases radially outward. In the inclined magnet 314, the magnet outer peripheral end 310b is longer than the magnet inner peripheral end 310a in the radial direction RD. The tilted magnet 314 is formed in a trapezoidal or sectoral shape as a whole.

In the parallel magnet 315, a pair of magnet side surfaces 310c extend in parallel. The pair of magnet side surfaces 310c extend in a direction perpendicular to the circumferential direction CD. In the parallel magnets 315, the distance between the pair of magnet side surfaces 310c is uniform in the radial direction RD. In the parallel magnet 315, the magnet outer peripheral end 310b and the magnet inner peripheral end 310a have substantially the same length in the radial direction RD. The parallel magnet 315 is formed in a rectangular shape as a whole.

In the rotor 300, one of the inclined magnet unit 317 and the parallel magnet unit 318 is the first orientation unit 319a, and the other is the second orientation unit 319b. For example, if the tilted magnet unit 317 is the first orientation unit 319a, the parallel magnet unit 318 is the second orientation unit 319b. In this configuration, one of the two tilt magnets 314 included in the tilt magnet unit 317 is the first inner magnet 312a and the other is the first outer magnet 313a. The parallel magnet 315 included in the tilt magnet unit 317 is the first circumferential magnet 311a. Further, of the parallel magnets 315 on both ends of the parallel magnet unit 318, one is the second inner magnet 312b and the other is the second outer magnet 313b. The middle parallel magnet 315 in the parallel magnet unit 318 is the second circumferential magnet 311b.

In the inclined magnet unit 317 , the width dimension of the parallel magnets 315 in the circumferential direction CD is smaller than the width dimension of the inclined magnets 314 . In the parallel magnet unit 318, the width dimension of the parallel magnet 315 in the center is smaller than the width dimension of the parallel magnets 315 at both ends. That is, in the first orienting unit 319a and the second orienting unit 319b, the width dimension of the peripheral magnets 311a and 311b is smaller than the width dimension of the inner magnets 312a and 312b and the width dimension of the outer magnets 313a and 313b. there is

As shown in FIGS. 116 and 117, magnet 310 has magnet piece 505 . The magnet piece 505 is a magnet piece forming the magnet 310 and corresponds to a magnet member. A plurality of magnet pieces 505 are included in magnet 310 . A plurality of magnet pieces 505 form a magnet 310 in a state of being joined with an adhesive. Magnet piece 505 is a permanent magnet. A plurality of magnet pieces 505 are laminated in the radial direction RD. The radial direction RD corresponds to the stacking direction. The magnet piece 505 is formed in a plate shape and extends in a direction perpendicular to the radial direction RD. Two magnet pieces 505 adjacent to each other in the radial direction RD are stacked on each other. The thickness dimension of the magnet pieces 505 is substantially the same among the plurality of magnet pieces 505 .

In the magnet 310 , the orientation directions of the magnet pieces 505 are aligned in a plurality of magnet pieces 505 . That is, in the magnet 310 , the magnetization directions of the magnet pieces 505 are aligned in the plurality of magnet pieces 505 . The multiple magnet pieces 505 of one magnet 310 are oriented in the same direction. For example, in the magnet 310 oriented to face one side in the circumferential direction CD, all of the plurality of magnet pieces 505 are oriented to face one side in the circumferential direction CD.

The magnet piece 505 has an inner peripheral piece surface 505a, an outer peripheral piece surface 505b, a piece side surface 505c, a first piece surface 505g and a second piece surface 505h. The inner peripheral piece surface 505 a , the outer peripheral piece surface 505 b , the piece side surface 505 c , the first piece surface 505 g and the second piece surface 505 h are included in the outer surface of the magnet piece 505 . The inner peripheral piece surface 505a and the outer peripheral piece surface 505b are a pair of plate surfaces that the magnet piece 505 has. In the magnet piece 505, the radially inner plate surface is an inner peripheral piece surface 505a, and the radially outer plate surface is an outer peripheral piece surface 505b. The inner peripheral piece surface 505a and the outer peripheral piece surface 505b extend parallel to each other. In two magnet pieces 505 adjacent to each other in the radial direction RD, one inner peripheral piece surface 505a and the other outer peripheral piece surface 505b are adhered.

The outer surface of magnet 310 is formed by a plurality of magnet pieces 505 that magnet 310 has. The outer surface of magnet 310 includes the outer surfaces of a plurality of magnet pieces 505 . Piece side 505c is included in magnet side 310c. The first piece surface 505g is included in the first magnet surface 310g. The second piece surface 505h is included in the second magnet surface 310h.

The piece side surface 505 c , the first piece surface 505 g and the second piece surface 505 h are included in the outer peripheral surface of the magnet piece 505 . The piece side surface 505c, the first piece surface 505g, and the second piece surface 505h extend in the radial direction RD so as to connect the inner peripheral piece surface 505a and the outer peripheral piece surface 505b. A pair of piece side surfaces 505 c are included in the outer peripheral surface of the magnet piece 505 . The pair of piece side surfaces 505c are arranged in the circumferential direction CD.

The innermost magnet piece 505 in the magnet 310 forms a magnet inner peripheral end 310a. The innermost magnet piece 505 is provided at the radially innermost position among the plurality of magnet pieces 505 of the magnet 310 . In the innermost magnet piece 505, an inner peripheral piece surface 505a is included in the magnet inner peripheral end 310a. The outermost magnet piece 505 in the magnet 310 forms a magnet outer peripheral end 310b. The outermost magnet piece 505 is provided at the radially outermost position among the plurality of magnet pieces 505 of the magnet 310 . In the outermost magnet piece 505, an outer peripheral piece surface 505b is included in the magnet outer peripheral end 310b.

In the magnet 310 , the inner peripheral tapered surface 310 d is in a state where it spans over the plurality of magnet pieces 505 . The width dimension of the inner peripheral tapered surface 310 d is larger than the thickness dimension of the magnet piece 505 in the radial direction RD. The inner peripheral tapered surface 310d is provided at a position straddling in the radial direction RD a boundary portion between two magnet pieces 505 adjacent to each other in the radial direction RD. The inner peripheral tapered surface 310 d is formed by a plurality of magnet pieces 505 .

The outer peripheral tapered surface 310 e is in a state of being stretched over a plurality of magnet pieces 505 . The width dimension of the outer peripheral tapered surface 310 e is larger than the thickness dimension of the magnet piece 505 in the radial direction RD. The outer peripheral tapered surface 310e is provided at a position straddling in the radial direction RD a boundary portion between two magnet pieces 505 adjacent to each other in the radial direction RD. The outer peripheral tapered surface 310 e is formed by a plurality of magnet pieces 505 .

As shown in FIG. 118 , the magnet 310 has a plurality of magnet pieces 505 hooked on the magnet holder 320 and the fixed block 330 . Among the plurality of magnet pieces 505 of the magnet 310 , the plurality of magnet pieces 505 forming the inner peripheral tapered surface 310 d are hooked on the fixed block 330 . A plurality of magnet pieces 505 hooked on the fixed block 330 are in contact with the block tapered surface 330a. Among the plurality of magnet pieces 505 of the magnet 310 , the plurality of magnet pieces 505 forming the outer peripheral tapered surface 316 e are hooked on the outer peripheral engaging portion 322 . A plurality of magnet pieces 505 hooked on the outer peripheral engaging portion 322 are in contact with the engaging tapered surface 322a.

As shown in FIG. 114, in the rotor 300, the magnet centerline C310 and the unit centerline C316 extend in the radial direction RD. The unit center line C316 is a straight imaginary line that passes through the center of the magnet unit 316 and extends in the radial direction RD. In addition to the center of the magnet unit 316, the unit centerline C316 passes through the center of the unit inner peripheral end 316a and the center of the unit outer peripheral end 316b. The magnet centerline C310 is a straight imaginary line passing through the center of the magnet 310 and extending in the radial direction. In addition to the center of the magnet 310, the magnet centerline C310 passes through the center of the magnet inner peripheral end 310a and the center of the magnet outer peripheral end 310b.

In the magnet unit 316, one unit centerline C316 and a plurality of magnet centerlines C310 extend. In the magnet unit 316, the magnet center line C310 of the middle magnet 310 among the three magnets 310 matches the unit center line C316. In the tilt magnet unit 317, the magnet center line C310 of the tilt magnet 314 is tilted with respect to the unit center line C316. In the tilt magnet unit 317, the magnet center line C310 of one of the two tilt magnets 314 is tilted with respect to the magnet center line C310 of the other. In the parallel magnet unit 318, the magnet centerlines C310 of all the parallel magnets 315 extend parallel to the unit centerline C316.

As shown in FIGS. 116 and 117, in the inclined magnet unit 317 and the parallel magnet unit 318, the magnet piece 505 extends in a direction orthogonal to the unit centerline C316. In the inclined magnet unit 317 and the parallel magnet unit 318, the magnet piece 505 of the inclined magnet 314 and the magnet piece 505 of the parallel magnet 315 are arranged in a straight line. The magnet pieces 505 of the inclined magnets 314 and the magnet pieces 505 of the parallel magnets 315 may be aligned in the radial direction or may be offset in the radial direction RD. The inclined magnet unit 317 and the parallel magnet unit 318 correspond to common units.

In the parallel magnet 315 of the tilt magnet unit 317, the magnet piece 505 is perpendicular to the magnet centerline C310. On the other hand, in the tilt magnet 314 of the tilt magnet unit 317, the magnet piece 505 is not orthogonal to the magnet centerline C310. In the parallel magnets 315 of the parallel magnet unit 318, the magnet pieces 505 are orthogonal to the magnet centerline C310.

The outer surface of magnet 310 includes a ground surface that is ground. In the magnet 310, at least the magnet side surface 310c, the inner peripheral tapered surface 310d, the outer peripheral tapered surface 310e, the first magnet surface 310g and the second magnet surface 310h are ground surfaces. Out of the outer surface of the magnet 310, the surface ground so as to extend flat is the ground surface. It is assumed that the ground surface of the magnet 310 is flat even if it is curved such that it bulges or dents. On the outer surface of the magnet 310, there is a state in which the ground surface extends flatly, such as a state in which there is no step.

The magnet side surface 310 c extends in the radial direction RD so as to span the plurality of magnet pieces 505 . The magnet side surface 310c is a ground surface and corresponds to a magnet ground surface and a ground lamination surface. Magnet side 310c includes a plurality of piece sides 505c. The plurality of piece side surfaces 505c are arranged on the same plane to form the magnet side surface 310c in a planar shape. For example, two piece side surfaces 505c adjacent to each other in the radial direction RD are not shifted in the circumferential direction CD, so that the magnet side surface 310c does not have a step. A plurality of piece side surfaces 505c are flush with each other on the magnet side surface 310c. The piece side surface 505c corresponds to the grinding surface of the member.

The first magnet surface 310g extends in the radial direction RD so as to span the plurality of magnet pieces 505, similarly to the magnet side surface 310c. The first magnet surface 310g is a ground surface and corresponds to a magnet ground surface and a ground laminated surface. The first magnet face 310g includes a plurality of first piece faces 505g. The plurality of first piece surfaces 505g are arranged on the same plane to form a planar first magnet surface 310g. For example, the two first piece surfaces 505g that are adjacent in the radial direction RD are not shifted in the axial direction AD, so that the first magnet surface 310g does not have a step. In the first magnet surface 310g, the plurality of first piece surfaces 505g are flush with each other. The first piece surface 505g corresponds to the grinding surface of the member.

The second magnet surface 310h extends in the radial direction RD so as to span the plurality of magnet pieces 505, similarly to the magnet side surface 310c. The second magnet surface 310h is a ground surface and corresponds to a magnet ground surface and a ground laminated surface. The second magnet face 310h includes a plurality of second piece faces 505h. The plurality of second piece surfaces 505h are arranged on the same plane to form a planar second magnet surface 310h. For example, two second piece surfaces 505h that are adjacent in the radial direction RD are not shifted in the axial direction AD, so that a step does not occur in the second magnet surface 310h. In the second magnet surface 310h, the plurality of second piece surfaces 505h are flush with each other. The second piece surface 505h corresponds to the grinding surface of the member.

At least part of the magnet inner peripheral end 310a is a ground surface. In this embodiment, an inner peripheral tapered surface 310d is a ground surface as part of the magnet inner peripheral end 310a. The inner peripheral tapered surface 310 d extends in the radial direction RD and the circumferential direction CD so as to span the plurality of magnet pieces 505 . The inner peripheral tapered surface 310d is inclined with respect to the magnet side surface 310c, the first magnet surface 310g and the second magnet surface 310h. The inner peripheral tapered surface 310d corresponds to a magnet grinding surface and a grinding inclined surface.

The inner peripheral tapered surface 310d includes a plurality of first piece surfaces 505g. The first piece surface 505g included in the inner peripheral tapered surface 310d is inclined with respect to the first piece surface 505g included in the first magnet surface 310g. In the inner peripheral tapered surface 310d, the plurality of first piece surfaces 505g are arranged on the same plane, thereby forming the inner peripheral tapered surface 310d in a planar shape. For example, the two first piece surfaces 505g that are adjacent in the radial direction RD are not shifted in the axial direction AD, so that the inner peripheral tapered surface 310d does not have a step. In the inner peripheral tapered surface 310d, the plurality of first piece surfaces 505g are flush with each other. The first piece surface 505g included in the inner peripheral tapered surface 310d also corresponds to the member grinding surface.

At least part of the magnet outer peripheral end 310b is a ground surface. In this embodiment, an outer peripheral tapered surface 310e is a ground surface as part of the magnet outer peripheral end 310b. The outer tapered surface 310 e extends in the radial direction RD and the circumferential direction CD so as to span the plurality of magnet pieces 505 . The outer tapered surface 310e is inclined with respect to the magnet side surface 310c, the first magnet surface 310g and the second magnet surface 310h. The outer peripheral tapered surface 310e corresponds to a magnet grinding surface and a grinding inclined surface.

The outer tapered surface 310e includes a plurality of first piece surfaces 505g. The first piece surface 505g included in the outer peripheral tapered surface 310e is inclined with respect to the first piece surface 505g included in the first magnet surface 310g. In the outer peripheral tapered surface 310e, the plurality of first piece surfaces 505g are arranged on the same plane, thereby forming the outer peripheral tapered surface 310e in a planar shape. For example, the two first piece surfaces 505g that are adjacent in the radial direction RD are not shifted in the axial direction AD, so that the outer tapered surface 310e does not have a step. In the outer peripheral tapered surface 310e, the plurality of first piece surfaces 505g are flush with each other. The first piece surface 505g included in the outer peripheral tapered surface 310e also corresponds to the member grinding surface.

In addition, in the magnet 310, the side tapered surface 316f is ground like the inner peripheral tapered surface 310d and the outer peripheral tapered surface 310e. Therefore, it can be said that the side tapered surface 316f corresponds to the magnet grinding surface and the grinding inclined surface.

The outer surface of the magnet unit 316 includes ground surfaces that are ground. In the magnet unit 316, at least the unit side surface 316c, the inner peripheral tapered surface 316d, the outer peripheral tapered surface 316e, the first unit surface 316g and the second unit surface 316h are ground surfaces. The ground surface of the magnet unit 316 is the same surface as the ground surface of the magnet 310 . For example, of the outer surface of the magnet unit 316, the ground surface is the surface that is ground so as to extend flat. It is assumed that the ground surface of the magnet unit 316 is flat even if it is bent to bulge or dent. On the outer surface of the magnet unit 316, there is a state in which the ground surface extends flatly, such as a state in which there is no step.

A unit side surface 316 c is formed by a magnet side surface 310 c of one magnet 310 . Since the magnet side surface 310c is a ground surface, the unit side surface 316c is a ground surface.

The first unit surface 316 g extends in the circumferential direction CD so as to span the plurality of magnets 310 . The first unit surface 316g is a grinding surface and corresponds to a unit grinding surface. The first unit surface 316g includes a plurality of first magnet surfaces 310g. The plurality of first magnet surfaces 310g are arranged on the same plane to form a planar first unit surface 316g. For example, two first magnet surfaces 310g adjacent to each other in the circumferential direction CD are not shifted in the axial direction AD, so that the first unit surface 316g does not have a step. In the first unit surface 316g, the plurality of first magnet surfaces 310g are flush with each other.

The second unit surface 316h extends in the circumferential direction CD so as to span the plurality of magnets 310, like the first unit surface 316g. The second unit surface 316h is a grinding surface and corresponds to a unit grinding surface. The second unit surface 316h includes a plurality of second magnet surfaces 310h. The plurality of second magnet surfaces 310h are arranged on the same plane to form a planar second unit surface 316h. For example, two second magnet surfaces 310h adjacent to each other in the circumferential direction CD are not displaced in the axial direction AD, so that a step does not occur on the second unit surface 316h. The plurality of second magnet surfaces 310h are flush with each other on the second unit surface 316h.

At least part of the unit inner peripheral end 316a is a ground surface. In this embodiment, an inner peripheral tapered surface 316d is a ground surface as part of the unit inner peripheral end 316a. The inner peripheral tapered surface 316 d extends in the radial direction RD and the circumferential direction CD so as to span the plurality of magnets 310 . The inner peripheral tapered surface 316d is inclined with respect to the unit side surface 316c, the first unit surface 316g and the second unit surface 316h. The inner peripheral tapered surface 316d corresponds to a unit grinding surface.

The inner peripheral tapered surface 316d includes a plurality of inner peripheral tapered surfaces 310d. A plurality of inner peripheral tapered surfaces 310d are arranged on the same plane to form an inner peripheral tapered surface 316d in a planar shape. For example, two inner peripheral tapered surfaces 310d adjacent to each other in the circumferential direction CD are not displaced in the axial direction AD, so that a step does not occur on the inner peripheral tapered surface 316d. In the inner peripheral tapered surface 316d, the plurality of inner peripheral tapered surfaces 310d are flush with each other.

At least part of the unit outer peripheral end 316b is a ground surface. In this embodiment, an outer peripheral tapered surface 316e is a ground surface as part of the unit outer peripheral end 316b. The outer tapered surface 316 e extends in the radial direction RD and the circumferential direction CD so as to span the plurality of magnets 310 . The outer tapered surface 316e is inclined with respect to the unit side surface 316c, the first unit surface 316g and the second unit surface 316h. The outer peripheral tapered surface 316e corresponds to a unit grinding surface.

The outer peripheral tapered surface 316e includes a plurality of outer peripheral tapered surfaces 310e. The plurality of outer peripheral tapered surfaces 310e are arranged on the same plane to form the outer peripheral tapered surface 316e in a planar shape. For example, two outer tapered surfaces 310e adjacent to each other in the circumferential direction CD are not displaced in the axial direction AD, so that the outer tapered surface 316e does not have a step. In the outer peripheral tapered surface 316e, the plurality of outer peripheral tapered surfaces 310e are flush with each other.

As shown in FIG. 115, the first magnet face 310g forms an axial gap 475. As shown in FIG. The first magnet surface 310 g is included in the rotor first surface 301 . Since there is no step on the first magnet surface 310g, variations in the axial gap 475 in the circumferential direction CD and the radial direction RD are less likely to occur. Further, the first unit surface 316g forms an axial gap 475 by having the first magnet surface 310g. The first unit surface 316 g is included in the rotor first surface 301 . Since there is no step on the first unit surface 316g, variations in the axial gap 475 in the circumferential direction CD and the radial direction RD are less likely to occur. The axial gap 475 corresponds to the gap, and the first magnet surface 310g corresponds to the gap forming surface. Axial gap 475 may simply be referred to as a gap.

As described for the configuration groups Bb and G above, the magnet unit 316 is supported by the magnet holder 320 , the fixing block 330 and the magnet fixture 335 . The magnet holder 320, the fixing block 330 and the magnet fixture 335 support the magnet 310 and the magnet unit 316 and correspond to the magnet support. As shown in FIG. 96 , the outer peripheral tapered surface 316 e is hooked on the outer peripheral engaging portion 322 to fix the magnet unit 316 to the magnet holder 320 . That is, the outer peripheral tapered surface 310 e is hooked on the outer peripheral engaging portion 322 , thereby fixing the magnet 310 to the magnet holder 320 . In addition, the inner peripheral tapered surface 316 d is hooked on the fixed block 330 , thereby fixing the magnet unit 316 to the fixed block 330 . That is, the inner peripheral tapered surface 310 d is hooked on the fixed block 330 , thereby fixing the magnet 310 to the fixed block 330 .

Next, a method for manufacturing the magnet 310 will be described. The method of manufacturing magnet 310 is included in the method of manufacturing magnet unit 316 . The method of manufacturing magnet unit 316 is included in the method of manufacturing rotor 300 . A method for manufacturing rotor 300 is included in a method for manufacturing motor device 60 . Here, a method for manufacturing the rotor 300 will be described with reference to the flowchart of FIG. Note that the method for manufacturing the magnet 310 corresponds to the method for manufacturing the magnet. Also, the method for manufacturing the rotor 300 corresponds to the method for manufacturing the rotor.

In the manufacturing process of rotor 300 shown in FIG. 119, an operator performs a sintering process as step P101. The sintering step is a step of manufacturing a sintered magnet equivalent to a neodymium magnet. In the sintering process, an operator manufactures, for example, a sintered block 511 shown in FIG. 120 as a sintered magnet. The sintered block 511 is a block-shaped sintered magnet.

After the sintering process, the operator performs the strip process as step P102. The strip process is a process of manufacturing a strip-shaped member from a sintered magnet. In the strip process, an operator manufactures strip magnets 512 from sintered blocks 511 as shown in FIG. For example, the operator divides the sintered block 511 into a plurality of divided pieces, and forms the strip magnets 512 by arranging the shape of these divided pieces into strips. The operator does not grind the strip magnets 512 in the strip process. The strip magnet 512 is a plate-shaped magnet and corresponds to a magnet plate member. The worker prepares the strip magnet 512 by performing the sintering process and the strip process. The sintering process and the strip process are included in the preparation process for preparing the strip magnet 512 .

After the strip process, the operator performs the magnet base material process as step P103. The magnet base material process is a process of manufacturing a base material for forming the magnet 310 . In the magnet base material step, the worker manufactures a magnet base material 513 as shown in FIG. 121 as a base material for forming the magnet 310 . A worker laminates and adheres a plurality of strip magnets 512 to manufacture a magnet base material 513 . An operator overlaps the plate surfaces of the plurality of strip magnets 512 and adheres the plate surfaces with an adhesive. Since the strip magnet 512 is not ground in the strip process, the plate surface of the strip magnet 512 tends to have fine irregularities. The unevenness increases the contact area between the plate surface of the strip magnet 512 and the adhesive, which tends to increase the adhesive strength of the adhesive. That is, it is easy to firmly bond the plurality of strip magnets 512 together. A magnet base material 513 shown in FIG. 121 is a base material for manufacturing the inclined magnet 314 .

After the magnet base material process, the operator performs a magnet side surface process as step P104. The magnet side surface process is a process of forming an adhesive surface on the magnet base material 513 . In the magnet side surface process, the worker grinds the magnet base material 513 to form the magnet side surface 310c as shown in FIG. An operator grinds the magnet base material 513 so that the magnet side surface 310c becomes planar. The operator forms the magnet side surfaces 310 c according to the number of objects to be adhered to the magnet 310 . The magnet side surface 310c corresponds to the magnet plane.

After the magnet side surface process, the operator performs the unit base material process as step P105. The unit base material process is a process of manufacturing a base material for forming the magnet unit 316 . In the unit base material step, the worker manufactures a unit base material 514 as shown in FIG. 123 as a base material for forming the magnet unit 316 . An operator manufactures a unit base material 514 by arranging and adhering a plurality of magnet base materials 513 . An operator overlaps the magnet side surfaces 310c of the plurality of magnet base materials 513 and bonds the magnet side surfaces 310c.

When the operator manufactures the unit base material 514, the unit inner boundary portion 501a is formed in the unit base material 514. As shown in FIG. As described above, repulsive force is less likely to occur between two magnet base materials 513 adjacent to each other via the unit inner boundary portion 501a. Therefore, when an operator bonds the two magnet base materials 513 together with an adhesive, it is less likely that this bond will be released due to the repulsive force of the two magnet base materials 513 .

After the unit base material process, the operator prepares the shape of the unit base material 514 to manufacture the magnet unit 316 . The operator shapes the unit base material 514 in two stages, for example. An operator performs a 1st shaping process as step P106. The first shaping step is a step of pre-processing the unit base material 514 to shape the unit base material 514 . The operator grinds the unit base material 514 to form the unit side surface 316c, the first unit surface 316g and the second unit surface 316h as shown in FIGS. The operator grinds the unit base material 514 so that the unit side surface 316c, the first unit surface 316g, and the second unit surface 316h are planar.

Unit side 316c, first unit side 316g and second unit side 316h include magnet side 310c, first magnet side 310g and second magnet side 310h. The first shaping step is also a step in which the operator grinds the unit base material 514 so that the magnet side surface 310c, the first magnet surface 310g, and the second magnet surface 310h are planar. The magnet side surface 310c, the first magnet surface 310g and the second magnet surface 310h correspond to magnet planes.

Also, in the first shaping step, the operator forms the unit inner peripheral end 316 a and the unit outer peripheral end 316 b on the unit base material 514 . The operator grinds the unit base material 514 so that the unit inner peripheral end 316a and the unit outer peripheral end 316b are also planar.

After the first shaping process, the operator performs the second shaping process as step P107. The second shaping step is a step of finishing the unit base material 514 to manufacture the magnet unit 316 . The operator grinds the pre-machined unit base material 514 to form an inner peripheral tapered surface 316d and an outer peripheral tapered surface 316e indicated by dashed lines in FIGS. The operator grinds the unit base material 514 so that the inner peripheral tapered surface 316d and the outer peripheral tapered surface 316e become planar. In the second forming step, the operator forms the side tapered surface 316f in addition to the inner peripheral tapered surface 316d and the outer peripheral tapered surface 316e.

The inner tapered surface 316d and the outer tapered surface 316e include an inner tapered surface 310d and an outer tapered surface 310e. The second shaping step is also a step in which the operator grinds the unit base material 514 so that the inner peripheral tapered surface 310d and the outer peripheral tapered surface 310e are planar. The inner tapered surface 310d and the outer tapered surface 310e correspond to magnet planes.

After the second shaping process, the worker performs an assembly process as step P108. The assembling process is a process of assembling the magnet unit 316 to the magnet holder 320 . The operator prepares the magnet holder 320 , the fixing block 330 and the magnet fixture 335 in addition to the magnet unit 316 . The operator then fixes the magnet unit 316 to the magnet holder 320 using the fixing block 330 and the magnet fixture 335 . The operator arranges the plurality of magnet units 316 along the holder main body 321 . In this case, the plurality of magnet units 316 form the unit outer boundary portion 501b. As described above, a repulsive force is likely to occur between two magnets 310 adjacent to each other across the unit outer boundary portion 501b. Therefore, the operator will assemble the plurality of magnet units 316 to the magnet holder 320 against this repulsive force.

<Constituent group M>
As shown in FIG. 127, the interior space of the motor housing 70 includes a stator area 471 , an opposite area 472 and an outer peripheral area 473 . Stator region 471 is a region closer to stator 200 than rotor 300 in axial direction AD. Stator region 471 extends along rotor first surface 301 . The opposite area 472 is an area on the opposite side of the rotor 300 from the stator area 471 . Opposed region 472 extends along rotor second surface 302 . The opposite area 472 and the outer peripheral area 473 extend in the radial direction RD so as to bridge the shaft body 341 and the motor inner peripheral surface 70b. The opposite region 472 and the outer peripheral region 473 annularly extend around the shaft body 341 in the circumferential direction CD. The stator region 471 and the opposite region 472 are arranged in the axial direction AD with the rotor 300 and the outer peripheral region 473 interposed therebetween.

The outer peripheral region 473 is the region between the rotor 300 and the motor housing 70 in the radial direction RD. The outer peripheral region 473 extends in the radial direction RD so as to bridge the holder outer peripheral end 320b and the motor inner peripheral surface 70b. The outer peripheral region 473 extends annularly around the rotor 300 in the circumferential direction CD. The outer peripheral region 473 is located between the stator region 471 and the opposite region 472 in the axial direction AD and communicates the stator region 471 and the opposite region 472 .

The stator region 471 , the opposite region 472 and the outer peripheral region 473 are spaces contained within the interior space of the motor housing 70 . The stator region 471 corresponds to the stator space, the opposite region 472 corresponds to the opposite space, and the outer peripheral region 473 corresponds to the outer peripheral space.

126 and 127, axial gap 475 is included in stator region 471. In FIGS. Axial gap 475 is open both radially outward and radially inward in stator region 471 . Axial gap 475 has a gap outer peripheral edge 476 and a gap inner peripheral edge 477 . The gap outer peripheral end 476 is the outer peripheral end of the axial gap 475 and is open radially outward. The gap outer peripheral end 476 communicates with the opposite area 472 through the outer peripheral area 473 . The gap inner peripheral end 477 is the inner peripheral end of the axial gap 475 and is open radially inward. The gap inner peripheral end 477 and the opposite region 472 are partitioned by at least one of the rotor 300 and the shaft flange 342 .

In the shaft 340, a shaft body 341 penetrates the stator 200 in the axial direction AD. The shaft body 341 is fixed to the rotor 300 and rotates together with the rotor 300 around the motor axis Cm. The shaft main body 341 corresponds to the rotating shaft portion. The shaft flange 342 supports the rotor 300 and corresponds to a shaft support. The rim 344 divides the stator region 471 into a radially inner portion and a radially outer portion, and corresponds to a support partition. Rim 344 is radially inward of axial gap 475 . Axial gap 475 is contained in a region radially inward of rim 344 in stator region 471 .

The gap inner peripheral end 477 communicates with the opposing area 472 through the holder adjustment hole 326 . The holder adjustment hole 326 is provided radially outside the rim 344 . Holder adjustment hole 326 is provided between rim 344 and gap inner peripheral end 477 in radial direction RD. The configuration in which the holder adjustment holes 326 are provided radially outside the rim 344 includes a configuration in which part of the holder adjustment holes 326 are aligned in the rim 344 in the axial direction AD as in the present embodiment. That is, if at least part of the holder adjustment hole 326 penetrates the magnet holder 320 radially outside the rim 344 , the holder adjustment hole 326 is provided radially outside the rim 344 . The holder adjustment hole 326 is closer to the axial gap 475 than the rim 344 is. The holder adjustment hole 326 corresponds to the rotor inner circumference hole and the clearance side hole.

The gap inner peripheral end 477 communicates with the opposing region 472 through the holder center hole 324 , the flange vent hole 346 and the rim inner peripheral hole 349 in addition to the holder adjustment hole 326 . A holder central bore 324 is included in the rotor 300 .

A holder central hole 324 shown in FIGS. 127 and 128 penetrates the magnet holder 320 in the axial direction AD. The holder central hole 324 communicates the stator area 471 and the opposite area 472 . A holder center hole 324 is provided in the center of the magnet holder 320 . The holder center hole 324 is located radially inwardly away from both the magnet 310 and the holder adjustment hole 326 . The holder central bore 324 is radially inward of the rim 344 . The shaft main body 341 is inserted through the holder central hole 324 so as to pass through the rotor 300 in the axial direction AD. The holder central hole 324 is provided between the shaft body 341 and the rim 344 in the radial direction RD. The holder center hole 324 corresponds to the rotor inner peripheral hole and the shaft portion side hole.

The stator region 471 and the opposite region 472 communicate with each other through the holder fixing holes 325 and the holder pin holes 327 . Among the plurality of holder fixing holes 325, the holder fixing hole 325 into which the holder fixture 350 is not inserted communicates the stator region 471 and the opposite region 472 inside the rim 344 in the radial direction, similarly to the holder central hole 324. ing. Among the plurality of holder pin holes 327 , the holder pin holes 327 into which the positioning pins 355 are not inserted communicate the stator area 471 and the opposite area 472 inside the rim 344 in the radial direction, similarly to the holder center hole 324 . The holder fixing hole 325 and the holder pin hole 327 correspond to the rotor inner peripheral hole and shaft portion side hole. Note that the holder central hole 324, the holder fixing hole 325 and the holder pin hole 327 are sometimes referred to as the holder central hole 324 and the like.

A flange vent hole 346 shown in FIGS. 127 and 129 penetrates the rim 344 so as to communicate the gap inner peripheral end 477 with the holder center hole 324 and the like. The flange vent hole 346 is between the gap inner peripheral end 477 and the holder central hole 324 and the like in the radial direction RD. The flange ventilation hole 346 corresponds to a partition communication hole.

The rim inner peripheral hole 349 penetrates the shaft flange 342 in the axial direction AD. The rim inner peripheral hole 349 is provided radially inside the rim 344 . The rim inner peripheral hole 349 is provided between the shaft body 341 and the rim 344 in the radial direction RD. The rim inner peripheral hole 349 is aligned with the holder center hole 324 and the like in the axial direction AD. The rim inner peripheral hole 349 is aligned with the flange vent hole 346 in the radial direction RD. The rim inner peripheral hole 349 communicates the holder central hole 324 and the like with the flange vent hole 346 . The rim inner peripheral hole 349 corresponds to a support through hole.

Spokes 343 connect shaft body 341 and rim 344 via rim inner peripheral holes 349 . The spokes 343 support the rim 344 while being fixed to the shaft body 341 . A plurality of spokes 343 are arranged in the circumferential direction CD with respect to the rim inner peripheral hole 349 . The spokes 343 are provided between adjacent flange vent holes 346 in the circumferential direction CD. The spokes 343 extend like a frame in the radial direction RD and correspond to a support frame.

As shown in FIGS. 126 and 127, stator region 471, opposite region 472, outer peripheral region 473 and axial gap 475 exist for first rotor 300a and second rotor 300b, respectively. A first opposite region 472a, a first outer peripheral region 473a and a first axial gap 475a exist with respect to the first rotor 300a. A second opposite region 472b, a second outer peripheral region 473b, and a second axial gap 475b exist for the second rotor 300b. The stator region 471 is a space between the first rotor 300a and the second rotor 300b, and exists in common between the first rotor 300a and the second rotor 300b. Stator 200 is housed in stator region 471 .

The first axial gap 475a is a gap between the first rotor 300a and the stator 200, and corresponds to an axial gap. The first opposite area 472a is a space between the first rotor 300a and the rear frame 370, and corresponds to the opposite space. The first outer peripheral area 473a is a space between the first rotor 300a and the motor inner peripheral surface 70b, and corresponds to the outer peripheral space. A gap outer peripheral end 476 of the first axial gap 475a communicates with the first opposite region 472a through the first outer peripheral region 473a. A gap inner peripheral end 477 of the first axial gap 475a communicates with the first opposite region 472a through the holder adjustment hole 326 of the first rotor 300a. A gap inner peripheral end 477 of the first axial gap 475a communicates with the first opposite region 472a through the holder center hole 324 and the like and the flange vent hole 346 of the first rotor 300a.

A second axial gap 475b is a gap between the second rotor 300b and the stator 200, and corresponds to an axial gap. The second opposite area 472b is a space between the second rotor 300b and the drive frame 390 and corresponds to the opposite space. The second outer peripheral area 473b is a space between the second rotor 300b and the motor inner peripheral surface 70b, and corresponds to the outer peripheral space. A gap outer peripheral end 476 of the second axial gap 475b communicates with the second opposite area 472b through the second outer peripheral area 473b. A gap inner peripheral end 477 of the second axial gap 475b communicates with the second opposite region 472b through the holder adjustment hole 326 of the second rotor 300b. A gap inner peripheral end 477 of the second axial gap 475b communicates with the second opposite region 472b through the holder central hole 324 and the like and the flange vent hole 346 of the second rotor 300b.

The drive frame 390 is provided in the housing main body 71 so as to cover the second rotor 300b from the second opposite area 472b side. The drive frame 390 is fixed to the motor housing 70 by being fixed to the housing body 71 . The drive frame 390 corresponds to the rotor cover portion.

As shown in FIGS. 127 and 130, the drive frame 390 has drive ribs 395 , outer peripheral ribs 396 and inner peripheral ribs 397 . These ribs 395 to 397 protrude in the axial direction AD from the frame main body 391 toward the second rotor 300b. The ribs 395 to 397 are protrusions provided on the frame body 391 . The drive rib 395 extends along the frame body 391 in the radial direction RD. The outer peripheral rib 396 extends in the circumferential direction CD along the outer peripheral edge of the frame main body 391 . The inner peripheral rib 397 extends in the circumferential direction CD along the inner peripheral edge of the frame main body 391 . The outer peripheral rib 396 and the inner peripheral rib 397 are formed in an annular shape. The drive rib 395 is bridged between the outer peripheral rib 396 and the inner peripheral rib 397 . The frame main body 391 corresponds to the cover main body, and the drive rib 395 corresponds to the cover rib.

When the rotor 300 rotates, gas is stirred and flowed by the holder ribs 323 in the inner space of the motor housing 70 . The gas flow generated by the holder ribs 323 includes an air flow that circulates around the rotor 300 in a direction perpendicular to the circumferential direction CD. This airflow is sent radially outward from the holder ribs 323 in the opposite region 472 toward the outer peripheral region 473 . The airflow reaching the outer peripheral region 473 flows into the axial gap 475 from the gap outer peripheral end 476 and flows out from the gap inner peripheral end 477 . The airflow flowing out from the axial gap 475 returns to the outer peripheral region 473 through the holder adjustment hole 326, the holder central hole 324, or the like. The airflow passing through the holder central hole 324 and the like flows out from the axial gap 475 and then passes through the flange vent hole 346 and the rim inner peripheral hole 349 to reach the holder central hole 324 and the like.

A path through which the airflow returns to the outer peripheral region 473 through the holder adjustment holes 326 may be referred to as a first circulation path. A path through which the airflow returns to the outer peripheral region 473 through the holder central hole 324 may be referred to as a second circulation path.

Airflows circulating around rotor 300 include airflows Fm1 to Fm4. The airflows Fm1 and Fm2 flow so as to circulate around the first rotor 300a in the direction perpendicular to the circumferential direction CD as the first rotor 300a rotates. The airflows Fm1 and Fm2 flow from the first opposite region 472a through the first outer peripheral region 473a into the first axial gap 475a. After that, the airflow Fm1 passes through the holder adjustment hole 326 from the first axial gap 475a and returns to the first opposite area 472a. On the other hand, the airflow Fm2 returns to the first opposite area 472a from the first axial gap 475a through the flange vent hole 346, the rim inner peripheral hole 349, the holder center hole 324, and the like.

The airflows Fm3 and Fm4 flow so as to circulate around the second rotor 300b in the direction orthogonal to the circumferential direction CD as the second rotor 300b rotates. The airflows Fm3 and Fm4 flow from the second opposite region 472b through the second outer peripheral region 473b into the second axial gap 475b. After that, the airflow Fm3 passes through the holder adjustment hole 326 from the second axial gap 475b and returns to the second opposite area 472b. On the other hand, the airflow Fm4 returns to the second opposite area 472b from the second axial gap 475b through the flange vent hole 346, the rim inner peripheral hole 349, the holder center hole 324, and the like.

In the second opposite area 472b, the drive rib 395 enhances the heat radiation effect from the airflows Fm3 and Fm4 to the drive frame 390. As shown in FIG. In the second opposite area 472b, the holder ribs 323 move relative to the drive ribs 395 in the circumferential direction CD as the second rotor 300b rotates, thereby easily stirring the airflows Fm3 and Fm4. In addition, the airflows Fm3 and Fm4 tend to flow between the two drive ribs 395 adjacent in the circumferential direction CD so as to swirl in a direction perpendicular to the axial direction AD. For example, the airflows Fm3 and Fm4 flow radially inward along one drive rib 395 , make a U-turn at the inner peripheral rib 397 , and flow radially outward along the other drive rib 395 . After that, the airflows Fm3 and Fm4 make a U-turn at the outer peripheral rib 396 and flow radially outward along one of the drive ribs 395 again.

<Constituent group N>
As shown in FIG. 131, the motor device unit 50 has a motor seal portion 402 and an inverter seal portion 403 . The seal portions 402 and 403 are elastically deformable seal members and are made of a resin material or the like. The seal portions 402 and 403 are O-rings, for example. The seal portions 402 and 403 are formed in an annular shape and extend along the circumferential direction CD.

Motor seal portion 402 is included in motor device 60 . Motor seal portion 402 is sandwiched between motor housing 70 and rear frame 370 . The motor seal portion 402 is provided between the motor housing 70 and the rear frame 370 and closes the gap between the motor housing 70 and the rear frame 370 . The motor seal portion 402 seals the boundary portion between the motor housing 70 and the rear frame 370 and restricts entry of water or the like into the motor housing 70 . The motor seal portion 402 extends annularly along the motor outer peripheral surface 70a.

The housing body 71 extends annularly in the circumferential direction CD. The housing main body 71 is formed in a cylindrical shape as a whole. The outer peripheral surface of the housing main body 71 is the motor outer peripheral surface 70a. The housing main body 71 forms the outer peripheral wall of the motor housing 70 and corresponds to the outer peripheral wall of the electric machine. The housing body 71 is sometimes called a motor outer peripheral wall. The inner space of the housing main body 71 forms the inner space of the motor housing 70 . The motor outer peripheral surface 70a corresponds to the electric machine outer peripheral surface.

The rear frame 370 is fixed to the motor housing 70 and corresponds to a fixed object. The rear frame 370 is arranged in the axial direction AD on the housing body 71 . The rear frame 370 is sandwiched between the motor housing 70 and the inverter housing 90 in the axial direction AD. The rear frame 370 covers the inner space of the housing body 71 from the axial direction AD and corresponds to a cover member. The rear frame 370 covers the inner space of the motor housing 70, the rotors 300a and 300b, and the stator 200 from the inverter device 80 side.

The rear frame 370 has a rear outer peripheral surface 370a. The rear outer peripheral surface 370a is the outer peripheral end of the rear frame 370 and is an end face facing radially outward. The rear outer peripheral surface 370a extends annularly in the circumferential direction CD. Between the motor housing 70 and the inverter housing 90, the rear outer peripheral surface 370a is exposed radially outward together with the outer peripheral surfaces 70a and 90a. The rear outer peripheral surface 370a is provided between the outer peripheral surfaces 70a and 90a in the axial direction AD. The rear outer peripheral surface 370a corresponds to the target outer peripheral surface.

The inverter seal portion 403 is sandwiched between the motor device 60 and the inverter device 80 . Inverter seal portion 403 is provided between inverter housing 90 and rear frame 370 and closes the gap between inverter housing 90 and rear frame 370 . The inverter seal portion 403 seals the boundary portion between the inverter housing 90 and the rear frame 370 , and restricts water and the like from entering the interior of the inverter housing 90 . The inverter seal portion 403 extends annularly along the outer peripheral surface 90a. The outer peripheral surface 90a may be referred to as an inverter outer peripheral surface 90a.

The inverter housing 90 has an inverter inner peripheral surface 90b. The inverter inner peripheral surface 90b is included in the inner surface of the motor housing 70 and extends annularly in the circumferential direction CD as a whole. The housing main body 91 extends annularly in the circumferential direction CD along the inverter inner peripheral surface 90b. The housing main body 91 is formed in a cylindrical shape as a whole. The outer peripheral surface of the housing main body 91 is an inverter outer peripheral surface 90a, and the inner peripheral surface thereof is an inverter inner peripheral surface 90b. The housing main body 91 forms an outer peripheral wall of the inverter housing 90 and is sometimes called an inverter outer peripheral wall. The inner space of the housing main body 91 forms the inner space of the inverter housing 90 .

As shown in FIG. 132, the motor device 60 has a motor seal holding portion 78 and a rear holding portion 376. As shown in FIG. The motor seal holding portion 78 and the rear holding portion 376 hold the motor seal portion 402 and restrict the displacement of the motor seal portion 402 . The motor seal portion 402 is sandwiched between the motor seal holding portion 78 and the rear holding portion 376 to close the gap between these holding portions 78 and 376 .

A motor seal retainer 78 is included in the motor housing 70 . The motor seal holding portion 78 is provided on the housing body 71 . In this embodiment, the motor seal holding portion 78 and the housing body 71 are integrally formed. The motor seal holding portion 78 is included in the housing main body 71 and forms, for example, an end portion of the housing main body 71 on the inverter device 80 side. The outer surface of the motor seal holding portion 78 is included in the motor outer peripheral surface 70a. Therefore, the motor outer peripheral surface 70 a is located radially outside the motor seal holding portion 78 . The motor seal holding portion 78 corresponds to the seal holding portion.

The rear frame 370 has a rear body 375 , a rear holding portion 376 and a rear exposure portion 377 . The rear main body 375 extends in a direction perpendicular to the axial direction AD and has a plate shape. A rear body 375 forms a main portion of the rear frame 370 . In the rear frame 370 , for example, a busbar support portion 371 , a bearing support portion 372 and a frame opening portion 373 are provided in a rear body 375 . The rear main body 375 extends annularly in the circumferential direction CD along the motor inner peripheral surface 70b. The rear main body 375 is provided, for example, at a position radially inside the motor housing 70 .

The rear holding portion 376 is provided on the rear main body 375 . The rear holding portion 376 is located near the outer peripheral edge of the rear body 375 . The rear holding portion 376 extends annularly in the circumferential direction CD along the motor inner peripheral surface 70b. The rear holding portion 376 protrudes from the rear main body 375 in the axial direction AD. The rear holding portion 376 spans the motor housing 70 and the inverter housing 90 in the axial direction AD. The rear holding portion 376 overlaps the inner peripheral surfaces 70b and 90b and protrudes radially inward from the inner peripheral surfaces 70b and 90b. The rear holding portion 376 is provided at a position spaced radially outward from the frame opening 373 . The rear holding portion 376 corresponds to the target holding portion.

The rear holding portion 376 is provided at a position aligned with the motor seal holding portion 78 in the radial direction RD. The rear holding portion 376 is located radially inside the motor seal holding portion 78 with the motor seal portion 402 interposed therebetween. The rear holding portion 376 and the motor seal holding portion 78 press the motor seal portion 402 in the radial direction RD. The motor seal portion 402 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the rear holding portion 376 and the motor seal holding portion 78 . The motor seal portion 402 is in close contact with the rear holding portion 376 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

The rear holding portion 376 has a motor-side rear groove 376a and an inverter-side rear groove 376b. The rear grooves 376a and 376b are recesses that are recessed radially inward and open radially outward. The rear grooves 376a and 376b extend in the circumferential direction CD along the motor inner peripheral surface 70b. The rear grooves 376a and 376b are provided so as to make one round around the rear holding portion 376 in the circumferential direction CD. The rear grooves 376a, 376b are arranged in the axial direction AD.

The motor-side rear groove 376a is provided at a position aligned in the radial direction RD in the motor seal holding portion 78. As shown in FIG. The motor-side rear groove 376a is a recess into which the motor seal portion 402 can enter. The motor seal portion 402 closes the gap between the motor seal holding portion 78 and the rear holding portion 376 while being inserted into the motor side rear groove 376a. The motor-side rear groove 376 a regulates positional deviation of the motor seal portion 402 with respect to the motor seal holding portion 78 and the rear holding portion 376 . The motor seal portion 402 is in close contact with both the rear holding portion 376 and the motor seal holding portion 78 due to the restoring force accompanying the elastic deformation of the motor seal portion 402 . Specifically, the motor seal portion 402 is in close contact with the motor inner peripheral surface 70b and the inner surface of the motor-side rear groove 376a. The motor-side rear groove 376a corresponds to the target concave portion.

The inverter device 80 has an inverter seal holding portion 98 . The inverter seal holding portion 98 and the rear holding portion 376 hold the inverter seal portion 403 and regulate the displacement of the inverter seal portion 403 . The inverter seal portion 403 is sandwiched between the inverter seal holding portion 98 and the rear holding portion 376 . The inverter seal portion 403 is provided between the inverter seal holding portion 98 and the rear holding portion 376 and closes the gap between these holding portions 98 and 376 .

The inverter seal holding portion 98 is included in the inverter housing 90 . The inverter seal holding portion 98 is provided on the housing body 91 . In this embodiment, the inverter seal holding portion 98 and the housing body 91 are integrally formed. The inverter seal holding portion 98 is included in the housing main body 91 and forms, for example, an end portion of the housing main body 91 on the motor device 60 side. Further, the outer surface of the inverter seal holding portion 98 is included in the outer peripheral surface 90a. Therefore, the inverter outer peripheral surface 90 a is located radially outside the inverter seal holding portion 98 .

The rear holding portion 376 and the inverter-side rear groove 376b are provided at positions aligned with the inverter seal holding portion 98 in the radial direction RD. The inverter-side rear groove 376b is a recess into which the inverter seal portion 403 can enter. The inverter seal portion 403 closes the gap between the inverter seal holding portion 98 and the rear holding portion 376 while being inserted into the inverter side rear groove 376b. The inverter-side rear groove 376b regulates the displacement of the inverter seal portion 403 with respect to the inverter seal holding portion 98 and the rear holding portion 376. As shown in FIG. The inverter seal portion 403 is in close contact with both the rear holding portion 376 and the inverter seal holding portion 98 due to the restoring force accompanying the elastic deformation of the inverter seal portion 403 . Specifically, the inverter seal portion 403 is in close contact with the inner peripheral surface 90b and the inner surface of the inverter-side rear groove 376b.

The rear exposed portion 377 is a portion of the rear frame 370 which is inserted between the motor seal holding portion 78 and the inverter seal holding portion 98 . The rear exposed portion 377 extends radially outward from the rear main body 375 and forms a rear outer peripheral surface 370a. In this embodiment, the rear exposed portion 377 extends radially outward from the rear main body 375 via the rear holding portion 376 . The rear exposed portion 377 extends radially outward from a portion of the rear holding portion 376 between the motor-side rear groove 376a and the inverter-side rear groove 376b. The rear holding portion 376 connects the rear main body 375 and the rear exposed portion 377 .

In the motor device 60, the motor outer peripheral surface 70a and the rear outer peripheral surface 370a are continuously arranged in the axial direction AD. The motor outer peripheral surface 70a and the rear outer peripheral surface 370a are flush with each other and form the same plane. The motor outer peripheral surface 70a and the rear outer peripheral surface 370a are aligned in the radial direction RD. The motor outer peripheral surface 70a and the rear outer peripheral surface 370a are arranged continuously in the axial direction AD even if they are slightly deviated in the radial direction RD. In this manner, no step surface is formed at the boundary between the motor outer peripheral surface 70a and the rear outer peripheral surface 370a.

Like the motor outer peripheral surface 70a, the inverter outer peripheral surface 90a is arranged continuously in the axial direction AD on the rear outer peripheral surface 370a. The outer peripheral surface 90a and the rear outer peripheral surface 370a are flush with each other and form the same plane. The outer peripheral surface 90a and the rear outer peripheral surface 370a are aligned in the radial direction RD. The outer peripheral surface 90a and the rear outer peripheral surface 370a are arranged continuously in the axial direction AD even if they are slightly deviated in the radial direction RD. In this way, no step surface is formed at the boundary between the inverter outer peripheral surface 90a and the rear outer peripheral surface 370a.

The power lead wire 212 has a curved shape so as to avoid the rear holding portion 376 radially inward. In the power lead-out line 212, the outer circumference lead-out portion 212a is positioned to line up with the rear holding portion 376 in the axial direction AD. The outer circumference drawn portion 212 a extends in the axial direction AD toward the rear holding portion 376 . The cross drawer portion 212c is positioned away from the rear holding portion 376 toward the first rotor 300a in the radial direction RD. The cross drawn portion 212c extends radially inward so as to pass between the rear holding portion 376 and the first rotor 300a. The cross drawer portion 212c protrudes radially inward from the rear holding portion 376. As shown in FIG. The crossing drawer portion 212c corresponds to a through drawer portion. The inner peripheral drawn-out portion 212b is positioned to line up with the rear holding portion 376 in the radial direction RD. The inner peripheral drawn-out portion 212 b is located radially inwardly away from the rear holding portion 376 .

The motor device unit 50 has a duct channel 105 . The duct channel 105 is formed between the unit housing 51 and the unit duct 100, and is a channel through which gas flows. The unit duct 100 covers the motor housing 70 and the inverter housing 90 from the outer peripheral sides of the motor fins 72 and the inverter fins 92 . The unit duct 100 is located radially outwardly away from the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a. The unit duct 100 is spaced radially outward from the outer peripheral surfaces 70 a and 90 a by at least the fins 72 and 92 . This separated space serves as the duct channel 105 . The unit duct 100 is in contact with or close to the fins 72,92. The unit duct 100 corresponds to the outer peripheral duct, and the duct channel 105 corresponds to the outer peripheral channel.

The gas flowing outside the motor device unit 50 includes gas flowing along the outer peripheral surfaces 70a, 90a, and 370a as the airflow Fb1. Airflow Fb1 flows through duct flow path 105 from inverter device 80 toward motor device 60 in axial direction AD. As the airflow Fb1 flows along the fins 72, 92, the heat of the fins 72, 92 is released to the airflow Fb1.

The airflow Fb1 passes through the boundary between the motor outer peripheral surface 70a and the rear outer peripheral surface 370a in the axial direction AD. At this boundary, the motor outer peripheral surface 70a and the rear outer peripheral surface 370a form a continuous surface, so that the airflow Fb1 is less likely to be disturbed. Airflow Fb1 passes through the boundary between inverter outer peripheral surface 90a and rear outer peripheral surface 370a in axial direction AD. At this boundary, the inverter outer peripheral surface 90a and the rear outer peripheral surface 370a form a continuous surface, so that the airflow Fb1 is less likely to be disturbed.

Next, a method for manufacturing the motor device unit 50 will be described. The process of manufacturing motor device unit 50 includes a process of manufacturing motor device 60 and a process of manufacturing inverter device 80 . In the process of manufacturing the motor device 60, an operator prepares the motor housing 70, the rear frame 370, and the motor seal portion 402 as a preparatory step. In this preparatory step, the rotor 300 and the stator 200 are housed inside the motor housing 70 .

After the preparation process, the worker performs a process of temporarily fixing the rear frame 370 to the motor housing 70 . The operator attaches the motor seal portion 402 to the rear frame 370 in this step. The operator inserts the motor seal portion 402 into the motor-side rear groove 376a. Then, the operator temporarily fixes the rear frame 370 to the motor housing 70 so that the motor seal portion 402 is in close contact with the motor seal holding portion 78 .

After the preparation process, the worker performs a process of temporarily fixing the rear frame 370 to the inverter housing 90 . The operator attaches the inverter seal portion 403 to the rear frame 370 in this step. The operator inserts the inverter seal portion 403 into the inverter-side rear groove 376b. Then, the operator temporarily fixes the rear frame 370 to the inverter housing 90 so that the inverter seal portion 403 is in close contact with the inverter seal holding portion 98 .

After the temporary fixing, the operator fixes the motor housing 70, the inverter housing 90, and the rear frame 370 with fasteners such as bolts. After that, the operator mounts the unit duct 100 on the motor housing 70 and the inverter housing 90 .

The motor device unit 50 is mounted on, for example, an aircraft. This flying object is an electric flying object such as an electric aircraft. In the electric flight vehicle, the motor device unit 50 drives and rotates a rotary wing such as a flight rotor. The motor device unit 50 is a propulsion device for propelling the aircraft. The motor device 60 is a drive source for rotating the rotor blades.

<Construction group A>
According to the present embodiment described so far, the neutral point busbar 290 is provided at a position spaced apart from the busbar protection section 270 that has electrical insulation and protects the power busbar 261 . In this configuration, the neutral point bus bar 290 and the power bus bar 261 do not come into contact with each other, and the neutral point bus bar 290 and the bus bar protection unit 270 do not even come into contact with each other. Therefore, the neutral point bus bar 290 and the bus bar protection unit 270 can be separated from each other to suppress the deterioration of the insulation reliability of the electrical insulation state between the neutral point bus bar 290 and the power bus bar 261 . Therefore, since the neutral point bus bar 290 and the bus bar protection portion 270 are separated from each other, the electrical insulation reliability of the motor device 60 can be enhanced.

According to this embodiment, the power busbar 261 is provided in one of the stator-side space S1 and the inverter-side space S2 aligned in the axial direction AD, and the neutral point busbar 290 is provided in the other. Specifically, a power busbar 261 is provided in the inverter-side space S2, and a neutral point busbar 290 is provided in the stator-side space S1. Moreover, the stator-side space S1 and the inverter-side space S2 are partitioned by the rear frame 370 . In this configuration, rear frame 370 restricts contact between neutral point bus bar 290 and power bus bar 261 . In this way, the rear frame 370 can prevent the deterioration of the insulation reliability with respect to the electrically insulated state between the neutral point bus bar 290 and the power bus bar 261 . Therefore, the electrical insulation reliability of the motor device 60 can be enhanced by the rear frame 370 .

According to this embodiment, the neutral point busbar 290 and the busbar protection portion 270 are provided at positions spaced apart in the axial direction AD. In this configuration, the distance between the neutral point busbar 290 and the busbar protection portion 270 can be maximized. Therefore, in order to improve the insulation reliability between the neutral point bus bar 290 and the power bus bar 261, it is possible to prevent the distance between the neutral point bus bar 290 and the bus bar protection unit 270 from becoming insufficient.

According to this embodiment, the motor device 60 is a rotating electric machine that corresponds to both the axial gap type and the double rotor type. That is, the first rotor 300a and the second rotor 300b are arranged along the motor axis Cm with the stator 200 interposed therebetween. In this configuration, the size of the motor device 60 can be reduced by the axial gap type, and the motor output can be increased by the double rotor type. Furthermore, in this configuration, the Halbach arrangement is used for the arrangement of the magnets 310 in each of the first rotor 300a and the second rotor 300b. Therefore, it is possible to easily omit the back yoke in the motor device 60 . Also, the coil 211 is formed by winding a coil wire 220 having a plurality of wires 223 . Therefore, the copper loss of the coil wire 220 generated in the coil 211 can be reduced.

According to this embodiment, the number of turns of two coil portions 215 adjacent in the circumferential direction CD is different. With this configuration, it is possible to facilitate pulling out the coil wire 220 in the two coil portions 215 in opposite directions in the radial direction RD. Therefore, in the coil 211, one of the power lead wire 212 and the neutral lead wire 213 can be easily drawn radially outward and the other can be drawn radially inward. Therefore, it is possible to improve the insulation reliability with respect to the electrical insulation state between the power lead wire 212 and the neutral lead wire 213 .

According to this embodiment, the connecting portion between the power bus bar 261 and the relay terminal 280 is supported by the terminal base 285 . In this configuration, even if power bus bar 261 vibrates relative to relay terminal 280 , the stress caused by the vibration is easily suppressed by terminal base 285 . Therefore, the relay terminal 280 and the power bus bar 261 forming the output line 143 can be improved in vibration resistance. Therefore, even if the motor device 60 vibrates relative to the inverter device 80, it is possible to prevent the output line 143 formed by the relay terminal 280 and the power bus bar 261 from becoming abnormal.

For example, unlike the present embodiment, in a configuration in which the power bus bar 261 is directly connected to the inverter device 80 side without passing through the relay terminal 280, the power bus bar 261 is bridged between the inverter device 80 and the motor device 60. It has become. Therefore, when the motor device 60 vibrates relative to the inverter device 80 , there is a concern that stress will concentrate on the power bus bar 261 and cause an abnormality in the power bus bar 261 . That is, there is concern that an abnormality may occur in the output line 143 formed by the power bus bar 261 .

According to this embodiment, one relay terminal 280 is arranged in each of the divided areas RE. With this configuration, a sufficiently large separation distance between two relay terminals 280 adjacent in the circumferential direction CD can be ensured. Therefore, even if heat is generated in the relay terminal 280 due to current flowing through the relay terminal 280 , the heat is easily released from the relay terminal 280 . Therefore, it is possible to prevent the motor device 60 from malfunctioning due to the heat generated at the relay terminal 280 .

According to this embodiment, the rear frame 370 has the busbar support portion 371 and the bearing support portion 372 . In this configuration, one member, the rear frame 370 , can support two devices, the power bus bar 261 and the first bearing 360 . Therefore, the number of parts constituting the motor device 60 can be reduced.

For example, unlike the present embodiment, assume a configuration in which the power bus bar 261 and the first bearing 360 are supported by independent dedicated members. In this configuration, dedicated members need to be used for each of the power bus bar 261 and the first bearing 360, and these dedicated members must be fixed to the motor housing 70 and the like. Therefore, in this configuration, there is a concern that the number of parts constituting the motor device 60 will increase.

According to this embodiment, the resolver 421 is provided on the side opposite to the neutral point bus bar 290 with the rear frame 370 interposed in the axial direction AD. With this configuration, a sufficient distance can be secured between the resolver 421 and the neutral point bus bar 290 . Therefore, even if an electromagnetic wave is generated by current flowing through the neutral point bus bar 290 or the like, the resolver 421 is less likely to be affected by the electromagnetic wave. For example, noise is less likely to occur in the detection signal of the resolver 421 when the neutral point bus bar 290 is energized.

<Construction group B>
According to this embodiment, in the rotor 300, the pair of inner magnets 312a and 312b adjacent in the circumferential direction CD are oriented obliquely with respect to the motor axis Cm so as to face the stator 200 side in the axial direction AD. there is A pair of circumferential magnets 311a and 311b adjacent to each other via a pair of inner magnets 312a and 312b in the circumferential direction CD are oriented so as to face each other in the circumferential direction CD. In this configuration, the magnetic flux generated by the pair of peripheral magnets 311a, 311b and the pair of inner magnets 312a, 312b concentrates on the stator 200 side, and the magnetic field on the stator 200 side tends to become stronger. Therefore, the energy efficiency of motor device 60 can be enhanced.

According to this embodiment, the pair of inner magnets 312a and 312b are oriented obliquely with respect to the motor axis Cm so as to face the stator 200 side in the axial direction AD and face each other in the circumferential direction CD. there is In this configuration, the magnetic flux generated by the pair of peripheral magnets 311a and 311b and the pair of inner magnets 312a and 312b tends to concentrate toward the inner boundary portion BI in the circumferential direction CD. By concentrating the magnetic flux in this way, the magnetic field on the stator 200 side can be strengthened.

According to this embodiment, in the rotor 300, the pair of outer shaft magnets 313a and 313b adjacent in the circumferential direction CD are provided on opposite sides via the first circumferential magnet 311a or the second circumferential magnet 311b. The pair of outer shaft magnets 313a and 313b are oriented obliquely with respect to the motor axis Cm so as to face the opposite side of the stator 200 in the axial direction AD and the opposite sides of each other in the circumferential direction CD. ing. In this configuration, the magnetic flux is diffused on the side opposite to the stator 200 in the axial direction AD, so that the magnetic field on the stator 200 side tends to be strong. Therefore, the energy efficiency of the motor device 60 can be further improved.

According to this embodiment, the first rotor 300a and the second rotor 300b are arranged such that the pair of inner magnets 312a and 312b on one side and the pair of outer magnets 313a and 313b on the other side are arranged in the axial direction AD. , are provided point-symmetrically to each other. In this configuration, the magnetic flux passing through the stator 200 in the axial direction AD tends to concentrate toward the inner boundary portion BI and the outer boundary portion BO in the circumferential direction CD. Therefore, the magnetic field on the stator 200 side can be strengthened.

According to this embodiment, the fixed block 330 is arranged such that the block tapered surface 330a overlaps with the inner peripheral tapered surface 316d and the block tapered surface 330a sandwiches the magnet 310 between the magnet holder 320 and the magnet 310. are fixed to the magnet holder 320 . In this configuration, the magnet 310 can be firmly fixed to the magnet holder 320 by the fixing block 330 by utilizing the fact that the block tapered surface 330a and the inner peripheral tapered surface 316d are inclined with respect to the motor axis Cm.

According to this embodiment, the plurality of magnet units 316 arranged in the circumferential direction CD on the rotor 300 include the inclined magnet units 317 and the parallel magnet units 318 . In this configuration, in the manufacturing process of the rotor 300, the operator inserts the parallel magnet unit 318 as the last magnet unit 316 to be arranged in the magnet holder 320 between the two inclined magnet units 317 adjacent in the circumferential direction CD. can let Therefore, all magnet units 316 can be properly fixed to the magnet holder 320 .

According to this embodiment, the rotor 300 is provided on the side opposite to the magnet 310 via the rim tip portion 344a as a fulcrum in the radial direction RD so that the bending stress F2 is generated in the rotor 300 against the attractive force F1 to the magnet 310. A pressing force F3 is applied to 300 . In this configuration, the holder fixture 350 can prevent the rotor 300 from warping due to the vicinity of the magnet 310 approaching the stator 200 . Therefore, it is possible to prevent the deformation of the rotor 300 from causing a problem such as a decrease in the efficiency of the motor 61 .

According to this embodiment, the portion of the rotor 300 to which the holder fixture 350 is fixed and the portion of the shaft flange 342 to which the holder fixture 350 is fixed are separated in the axial direction AD. Therefore, even if the pressing force F3 is insufficient with respect to the suction force F1, the lack of the pressing force F3 can be resolved by increasing the pressing force F3 using the holder fixture 350 .

According to this embodiment, the holder fixing hole 325 into which the first holder fixture 350a is inserted in the first rotor 300a and the holder fixing hole 325 into which the second holder fixture 350b is inserted in the second rotor 300b are It exists in the position spaced apart in the circumferential direction CD. With this configuration, it is not necessary to insert both the first holder fixture 350a and the second holder fixture 350b into one hole in the shaft flange 342 from opposite sides in the axial direction AD. Therefore, it is not necessary to make the shaft flange 342 thick enough to insert both the first holder fixture 350a and the second holder fixture 350b into one hole. Therefore, the thickness and weight of the shaft flange 342 can be reduced.

<Constituent group C>
According to this embodiment, in the motor housing 70, the coil protection portion 250 is provided so as to overlap the inner peripheral surface 70b. With this configuration, the heat of the coil 211 is easily transferred to the motor housing 70 via the coil protection portion 250 . Moreover, motor fins 72 are provided on the outer peripheral surface 70 a of the motor housing 70 . Therefore, the heat transmitted from the coil protection portion 250 to the motor housing 70 is easily released to the outside by the motor fins 72 . Therefore, the heat dissipation effect of the motor device 60 can be enhanced.

According to the present embodiment, the coil protection portion 250 enters between the plurality of stator holding portions 171 from the inside in the radial direction. In this configuration, the stator holding portion 171 can increase the contact area between the coil protection portion 250 and the inner peripheral surface 70b. Therefore, heat is easily conducted from the coil protection portion 250 to the stator holding portion 171, and as a result, the heat dissipation effect of the motor housing 70 can be enhanced.

According to this embodiment, the coil portion 215 and the shaft holding portion 174 face each other in the radial direction RD. In this configuration, the distance between the coil portion 215 and the motor housing 70 in the radial direction RD can be reduced by the shaft holding portion 174 . That is, the thickness dimension of the coil protection portion 250 that exists between the shaft holding portion 174 in the radial direction RD can be reduced. Therefore, the heat transmitted from the coil portion 215 to the motor housing 70 is less likely to remain in the coil protection portion 250 . Therefore, it is possible to prevent the heat dissipation effect of the motor housing 70 from being reduced by the coil protection portion 250 .

According to this embodiment, the coil protector 250 overlaps at least the housing rough surface 177 . In this configuration, since the coil protection portion 250 is likely to come into close contact with the housing rough surface 177 , heat is easily transferred from the coil protection portion 250 to the motor housing 70 . Further, in this configuration, the contact area between the coil protection portion 250 and the housing rough surface 177 tends to be large, so that heat is easily transferred from the coil protection portion 250 to the motor housing 70 . Therefore, the heat dissipation effect of the motor housing 70 can be enhanced by the housing rough surface 177 .

According to this embodiment, the grommet 255 that protects the power lead wire 212 fills the gap between the power lead wire 212 and the coil protection portion 250 . In this configuration, the grommet 255 can prevent the power lead wire 212 from being bent at the boundary between the embedded portion 255a and the exposed portion 255b. Further, when the coil protection portion 250 is resin-molded during the manufacture of the motor device 60 , the grommet 255 can prevent molten resin from leaking from around the power lead-out wire 212 .

According to this embodiment, since the bobbin 240 has electrical insulation, the electrical insulation state with respect to the coil 211 can be optimized by the bobbin 240 . Therefore, the occurrence of partial discharge in the coil 211 can be suppressed. Moreover, since the heat of the core 231 is released to the coil protection portion 250 via the bobbin 240, the heat dissipation effect of the core unit 230 can be enhanced.

According to this embodiment, the coil protector 250 overlaps at least the bobbin rough surface 247 . In this configuration, the coil protection portion 250 is easily brought into close contact with the bobbin rough surface 247 , so heat is easily transferred from the bobbin 240 to the coil protection portion 250 . Moreover, in this configuration, the contact area between the coil protection portion 250 and the bobbin rough surface 247 tends to be large, so heat is easily transferred from the bobbin 240 to the coil protection portion 250 . Therefore, the heat dissipation effect of the motor device 60 can be enhanced by the bobbin rough surface 247 .

According to the present embodiment, the core width of the core 231 is gradually reduced radially inward. In this configuration, the surface area of the core 231 is likely to be increased, and the core 231 is likely to be in close contact with the bobbin 240, compared to, for example, a configuration in which the core width is continuously reduced. Therefore, the heat of the core 231 is easily transferred to the bobbin 240 . Moreover, when the core 231 is manufactured by laminating a plurality of core forming plate materials 236, the types of the core forming plate materials 236 can be restricted according to the number of stages in which the core width is reduced. Therefore, it is possible to suppress an increase in cost for manufacturing the core forming plate material 236 .

According to this embodiment, the flange inner plate surface 243 of the bobbin 240 is provided with a flange recessed portion 243 a that is recessed for drawing out the power lead wire 212 from the coil 211 . In this configuration, a dead space is less likely to occur between the flange inner plate surface 243 and the coil 211 on the opposite side of the flange recessed portion 243a via the bobbin body portion 241 in the circumferential direction CD. Therefore, the space factor of the coil 211 in the bobbin 240 can be increased.

<Constituent group D>
According to this embodiment, the inverter 81 and the rotor 300 and stator 200 arranged in the axial direction AD are accommodated in the unit housing 51 . With this configuration, the motor device unit 50 can be miniaturized while the motor device 60 is thinned. Moreover, the motor fins 72 and the inverter fins 92 are provided on the outer peripheral surface of the unit housing 51 . Therefore, the heat dissipation effect of the motor device unit 50 can be enhanced by the motor fins 72 and the inverter fins 92 . Therefore, both miniaturization of the motor device unit 50 and improvement of the heat dissipation effect can be realized.

According to this embodiment, the coil protection portion 250 is superimposed on the inner peripheral surface of the unit housing 51 . With this configuration, the heat of the coil 211 is easily transferred to the unit housing 51 through the coil protection portion 250 . Moreover, the motor fins 72 and the inverter fins 92 are provided on the outer peripheral surface of the unit housing 51 . Therefore, the heat transmitted from the coil protection portion 250 to the unit housing 51 is easily released to the outside by the motor fins 72 and the inverter fins 92 . Therefore, the heat dissipation effect of the motor device unit 50 can be enhanced.

According to this embodiment, the stator 200 and the rotor 300 are aligned in the axial direction AD, so that the motor housing 70 is thinned, and in the unit housing 51, the motor housing 70 and the inverter housing 90 are aligned in the axial direction AD. are lined up. Therefore, it is possible to prevent the motor device unit 50 from increasing in size in the axial direction AD by reducing the thickness of the motor housing 70 .

According to this embodiment, flange vent holes 346 provided in the shaft flange 342 penetrate the rim 344 in the radial direction RD to allow ventilation in the radial direction RD. With this configuration, the heat of the stator 200 is easily released in the radial direction RD through the flange vent holes 346 . Therefore, the heat dissipation effect of the motor device 60 can be enhanced by the flange vent holes 346 .

According to this embodiment, the holder adjustment hole 326 for adjusting the balance of the rotor 300 passes through the rotor 300 in the axial direction AD and allows ventilation in the axial direction AD. With this configuration, the heat of the stator 200 is easily released in the axial direction AD through the holder adjustment holes 326 . Therefore, by using the holder adjustment hole 326 for adjusting the balance of the rotor 300, the heat radiation effect of the motor device 60 can be enhanced.

According to this embodiment, the signal wiring 426 extending from the resolver 421 and the signal wiring 436 extending from the temperature sensor 431 are integrated into the signal terminal block 440 . In this configuration, the inverter wiring of the inverter device 80 can be electrically connected to both the resolver 421 and the temperature sensor 431 by leading to the signal terminal block 440 . Therefore, it is possible to reduce a worker's workload when connecting the signal wirings of motor device 60 and the signal wirings of inverter device 80 at the time of manufacturing motor device 60 .

According to this embodiment, a dust cover 380 covers the frame opening 373 . Therefore, the power lead-out line 212 can be pulled out from the frame opening 373 and the dust cover 380 can prevent foreign matter from passing through the frame opening 373 .

According to this embodiment, in the motor housing 70 , the connecting flange 74 projecting from the housing body 71 is provided with the flange hole 74 a. Therefore, it is possible to prevent the rigidity of the housing body 71 from being lowered by the flange hole 74a. A fixed flange 178 projecting from the housing body 71 is provided with a flange hole 178a. Therefore, it is possible to prevent the rigidity of the housing body 71 from being lowered by the flange hole 178a.

According to this embodiment, in the drive frame 390, the first fixing holes 392a and the second fixing holes 392b are arranged in the radial direction RD. In this configuration, the stress applied from the motor housing 70 to the first fixing hole 392a and the stress applied from the speed reducer 53 to the second fixing hole 392b tend to cancel each other out. Therefore, it is possible to suppress the occurrence of abnormalities such as deformation of the drive frame 390 due to the stress from the motor housing 70 and the stress from the speed reducer 53 .

<Construction group E>
According to the present embodiment, the outer grommet portion 258 extends toward the power bus bar 261 side from the outer circumference drawing portion 212a in the axial direction AD. In this configuration, the outer grommet portion 258 can maintain electrical insulation between the outer periphery lead portion 212a and the motor housing 70 regardless of the positional relationship between the outer periphery lead portion 212a and the motor inner peripheral surface 70b. For example, even if the position of the outer circumference lead-out portion 212a is unintentionally shifted toward the power busbar 261 in the axial direction AD, the electrical insulation between the outer circumference lead-out portion 212a and the motor housing 70 is degraded. can be suppressed by Therefore, the electrical insulation reliability of the motor device 60 can be enhanced by the outer grommet portion 258 .

In addition, since the outer grommet portion 258 maintains the electrical insulation between the outer peripheral lead portion 212a and the motor housing 70, the outer peripheral lead portion 212a and the motor inner peripheral surface 70b can be arranged at positions close to the radial direction RD. is. Therefore, it is possible to downsize the motor housing 70 in the radial direction RD.

According to the present embodiment, the outer grommet portion 258 extends toward the power busbar 261 side in the axial direction AD from the outer circumference bent portion 212d. In this configuration, the outer grommet portion 258 can maintain electrical insulation between the outer circumferential bent portion 212d and the motor housing 70 regardless of the degree and position of the outer circumferential bent portion 212d.

According to the present embodiment, the outer grommet portion 258 is positioned away from the inner peripheral drawing portion 212b toward the side opposite to the power bus bar 261 in the axial direction AD. This configuration can prevent the outer grommet portion 258 from being excessively elongated toward the power bus bar 261 in the axial direction AD. Moreover, since the inner circumference lead-out portion 212b is provided inside the inner circumference lead-out portion 212b in the radial direction RD, the electrical insulation between the inner circumference lead-out portion 212b and the motor inner peripheral surface 70b is less likely to deteriorate. there is Therefore, even if the outer grommet portion 258 does not enter between the inner peripheral lead portion 212b and the motor inner peripheral surface 70b, electrical insulation between the inner peripheral lead portion 212b and the motor housing 70 can be maintained.

According to the present embodiment, the outer circumference lead-out portion 212a extends further than the outer grommet portion 258 toward the side opposite to the power bus bar 261 in the axial direction AD. With this configuration, it is possible to prevent the outer grommet portion 258 from being excessively elongated toward the side opposite to the power bus bar 261 in the axial direction AD. Moreover, in the region on the opposite side of the power bus bar 261 via the outer grommet portion 258 in the axial direction AD, the coil protection portion 250 or the like different from the outer grommet portion 258 electrically insulates the outer circumference drawing portion 212a from the motor housing 70. It is possible to retain sexuality.

According to the present embodiment, the outer grommet portion 258 extends toward both sides of the outer circumference lead portion 212a in the circumferential direction CD. Therefore, for example, even if the position of the outer circumference lead-out portion 212a is unintentionally shifted in the circumferential direction CD, the outer grommet portion 258 can prevent the deterioration of the electrical insulation between the outer circumference lead-out portion 212a and the motor housing 70. .

According to this embodiment, the width dimension Wa1 of the outer grommet portion 258 in the circumferential direction CD is larger than the width dimension Wa3 of the outer peripheral lead portion 212a. Therefore, it is possible to realize a configuration in which the outer grommet portion 258 extends toward both sides of the outer peripheral lead portion 212a in the circumferential direction CD.

According to this embodiment, the grommet 255 including the outer grommet portion 258 is a member for maintaining the state in which the molten resin seals the coil 211 . In this configuration, the grommet 255 has two functions: a function of assisting the sealing of the coil 211 by the coil protection portion 250, and a function of maintaining electrical insulation between the outer circumference drawing portion 212a and the motor housing 70. there is For this reason, the number of parts of the motor device 60 can be reduced as compared with a configuration in which a dedicated part is provided for maintaining electrical insulation between the outer circumference drawing portion 212a and the motor housing 70, for example.

According to this embodiment, since the first rotor 300a and the second rotor 300b are arranged in the axial direction AD with the stator 200 interposed therebetween, it is possible to downsize the motor device 60 in the axial direction AD. Moreover, since the outer grommet portion 258 maintains the electrical insulation between the outer peripheral lead portion 212a and the motor housing 70, the size of the motor device 60 can be reduced in the radial direction RD. Therefore, it is possible to downsize the motor device 60 in both the axial direction AD and the radial direction RD.

According to this embodiment, the outer grommet portion 258 extends toward the power bus bar 261 side from the inner grommet portion 257 in the axial direction AD. In this configuration, the inner grommet portion 257 is located farther from the power busbar 261 than the outer grommet portion 258 in the axial direction AD. Therefore, it is possible to prevent the lowering of the degree of freedom regarding the arrangement of the power lead wires 212, such as the position of the cross lead portion 212c, due to the presence of the inner grommet portion 257. Therefore, the electrical insulation of the motor device 60 can be enhanced by the outer grommet portion 258 while increasing the degree of freedom in arranging the power lead-out lines 212 .

For example, unlike the present embodiment, a configuration is assumed in which the inner grommet portion 257 extends toward the power bus bar 261 to the same position as the outer grommet portion 258 in the axial direction AD. In this configuration, the inner grommet portion 257 restricts the outer grommet portion 257 from arranging the outer peripheral bent portion 212d at a position aligned with the outer grommet portion 258 in the radial direction RD.

<Constituent group F>
According to this embodiment, the holder ribs 323 of the first rotor 300 a rotate together with the holder main body 321 to blow air toward the power lead lines 212 . In this configuration, the air sent by the holder ribs 323 can be applied as cooling air to the power lead wire 212 that generates heat by energizing the power lead wire 212 . That is, the airflow generated by the holder ribs 323 can hit the power lead-out line 212 . Therefore, by using the rotation of the first rotor 300a to generate the cooling air by the holder ribs 323, the power lead-out line 212 can be positively cooled by the cooling air. Therefore, the cooling effect of the motor device 60 can be enhanced by the first rotor 300a.

Further, by cooling the power lead-out line 212 with cooling air from the holder ribs 323, the temperature rise of the busbar unit 260 connected to the power lead-out line 212 can be suppressed. For example, it is possible to suppress the temperature rise of the lead-out connection portion 266, the busbar lead-out line 265, and the power busbar 261. Therefore, it is possible to prevent the busbar protection portion 270, the drawer connection portion 266, and the like from becoming abnormally hot due to an excessive increase in temperature of the busbar protection portion 270, the drawer connection portion 266, and the like.

Furthermore, since cooling air can be generated by the holder ribs 323 of the first rotor 300a, there is no need to provide a dedicated cooling fan for generating cooling air. Therefore, since there is no dedicated cooling fan, the size and weight of the motor device 60 can be reduced. Moreover, since there is no dedicated cooling fan, the number of parts constituting the motor device 60 can be reduced.

According to this embodiment, the holder ribs 323 are provided on the holder body 321 so as to send air radially outward. In this configuration, the airflow generated by the holder ribs 323 tends to hit the power lead wires 212 passing radially outward of the first rotor 300a. Therefore, it is possible to realize a configuration in which the power lead-out line 212 is easily cooled by the cooling air generated by the holder ribs 323 .

According to this embodiment, a plurality of holder ribs 323 are arranged in the circumferential direction CD. In this configuration, since the plurality of holder ribs 323 rotate as the first rotor 300a rotates, the amount of cooling air that hits the power lead-out line 212 tends to increase. Therefore, the cooling effect of the power lead-out line 212 by the holder ribs 323 can be enhanced.

According to this embodiment, the distal end portion of the holder rib 323 includes a rib tapered portion 323d that is inclined with respect to the holder main body 321 so as to face radially outward. For example, the rib tapered portion 323d is inclined with respect to the body outer plate surface 321a. In this configuration, the cooling air generated by the rib tapered portion 323d tends to increase radially inward. Therefore, the rib tapered portion 323 d causes the cooling air to flow radially outward as a whole, so that the power lead-out line 212 is easily hit. Therefore, the cooling effect of the power lead-out line 212 by the holder ribs 323 can be enhanced by the rib tapered portion 323d.

According to this embodiment, the distal end portion of the holder rib 323 includes a parallel rib portion 323 c extending parallel to the holder main body 321 . For example, the rib parallel portion 323c extends parallel to the body outer plate surface 321a. In this configuration, the projection dimension of the holder ribs 323 from the holder main body 321 is made uniform by the parallel rib portions 323c. Therefore, the amount of cooling air generated by the holder ribs 323 can be increased as much as possible. Therefore, the cooling effect of the power lead-out line 212 by the holder ribs 323 can be enhanced by the parallel rib portions 323c.

According to the present embodiment, at least part of the holder ribs 323 are provided at positions aligned with the magnets 310 in the axial direction AD on the first rotor 300a. With this configuration, the cooling air generated by the holder ribs 323 easily flows along the holder ribs 323 . The cooling air flows along the magnets 310 via the holder body 321 , thereby facilitating cooling of the magnets 310 . Therefore, the cooling effect of the holder ribs 323 can be imparted to the magnets 310 .

According to this embodiment, the holder ribs 323 extend radially inward along the holder body 321 from the holder outer peripheral end 320b. In this configuration, cooling air can be generated by the holder ribs 323 at positions as close as possible to the power lead-out lines 212 in the radial direction RD. Therefore, depending on the positional relationship between the holder main body 321 and the holder ribs 323, the cooling effect of the power lead-out lines 212 by the holder ribs 323 can be enhanced.

According to the present embodiment, in the power lead-out line 212, the inner peripheral lead-out portion 212b, the cross lead-out portion 212c, the inner peripheral bent portion 212e, and other aligned lead-out portions are aligned with the holder rib 323 in the axial direction AD. In this configuration, the cooling air generated by the holder ribs 323 and flowing in the axial direction AD easily hits the side-by-side drawer section, so that the cooling effect of the side-by-side drawer section by the cooling air can be enhanced.

According to this embodiment, the frame opening 373 through which the power lead-out line 212 is inserted is provided at a position aligned with the holder rib 323 in the axial direction AD. In this configuration, the cooling air generated by the holder ribs 323 hits the power lead-out line 212 by flowing out from the frame opening 373 . Therefore, the cooling effect of the power lead-out line 212 by the holder ribs 323 can be enhanced by the frame openings 373 .

According to this embodiment, the lead connection portion 266 to which the power lead wire 212 and the busbar lead wire 265 are connected is provided at a position aligned in the axial direction AD in the frame opening 373 . In this configuration, the cooling air generated by the holder ribs 323 and flowing out from the frame opening 373 hits the drawer connection portion 266 . Therefore, the cooling effect of the drawer connection portion 266 by the holder ribs 323 can be enhanced.

According to this embodiment, the power busbar 261 is fixed to the rear frame 370 . In this configuration, the cooling air generated by holder ribs 323 and flowing along rear frame 370 cools power bus bar 261 via rear frame 370 . Therefore, the cooling effect of the holder ribs 323 can be indirectly applied to the power bus bar 261 .

<Constituent group G>
According to this embodiment, the fixing block 330 is fixed to the magnet holder 320 in a state of being hooked on the inner circumferential tapered surface 316d from the axial gap 475 side. In this configuration, by using the inner peripheral tapered surface 316d, the magnet unit 316 can be fixed to the magnet holder 320 by the fixing block 330 without projecting the fixing block 330 from the first unit surface 316g toward the axial gap 475 side. can be done. Since the fixing block 330 does not protrude toward the axial gap 475 in this way, the axial gap 475 can be made as small as possible. Therefore, the magnetic field generated in the axial gap 475 can be strengthened by reducing the leakage magnetic flux from the axial gap 475 and the like.

Moreover, the inner peripheral tapered surface 316 d extends along the outer peripheral edge of the first unit surface 316 g in the magnet unit 316 . In this configuration, by simply arranging the fixing block 330 on the magnet unit 316 in the direction perpendicular to the axial direction AD, the fixing block 330 can be hooked to the inner peripheral tapered surface 316d. Therefore, it is not necessary for the fixed block 330 to cover the first unit surface 316g from the axial gap 475 side. Therefore, it is possible to prevent the magnetic flux from being blocked by the fixed block 330 in the axial gap 475 and the magnetic field generated in the axial gap 475 from being weakened.

As described above, by increasing the magnetic field generated in the axial gap 475, the energy efficiency of the motor device 60 can be improved.

In addition, since the magnet unit 316 is fixed to the magnet holder 320 by utilizing the inclination of the inner peripheral tapered surface 316d, it is not necessary to form a concave portion such as a groove in the peripheral surface of the magnet unit 316, for example. Therefore, it is possible to avoid complicating the shape of the magnet unit 316 . By simplifying the shape of the magnet unit 316 in this way, the number of man-hours required for processing the magnet unit 316 can be reduced. Therefore, the cost required to manufacture the magnet unit 316 can be reduced.

Furthermore, since the fixing block 330 is fixed to the magnet holder 320 in a state of being hooked on the inner peripheral tapered surface 316 d , there is no need to use a dedicated member different from the fixing block 330 for fixing the magnet unit 316 . Therefore, the number of parts used to fix the magnet unit 316 to the magnet holder 320 can be reduced. Therefore, it becomes possible to reduce the cost required to manufacture the rotor 300 and reduce the weight of the rotor 300 .

According to this embodiment, the block tapered surface 330a is hooked so as to overlap the inner peripheral tapered surface 316d. In this configuration, the block tapered surface 330a and the inner peripheral tapered surface 316d can be brought into surface contact with each other. Therefore, it is possible to realize a configuration in which the magnet unit 316 is less likely to be misaligned with respect to the fixed block 330 .

According to this embodiment, the fixing block 330 is provided only radially inward of the radially outer side and the radially inner side of the magnet unit 316 . In this configuration, since the fixing block 330 is not provided radially outside the magnet unit 316 , the portion of the rotor 300 radially outside the magnet unit 316 can be shortened in the radial direction RD. Therefore, it is possible to suppress the size of the rotor 300 from increasing in the radial direction RD.

For example, unlike the present embodiment, a configuration in which the fixing block 330 is provided radially outside the magnet unit 316 is assumed. In this configuration, it is necessary to arrange the axial gap 475 radially inward by the amount of the fixed block 330 . In this case, there is concern that the gap area will decrease, the magnetic field will weaken, and the output of the motor device 60 will decrease. In contrast, according to the present embodiment, since the fixed block 330 is not provided radially outside the magnet unit 316, the gap area can be increased as much as possible. Therefore, the magnetic field in the axial gap 475 can be made as strong as possible, and as a result, the output of the motor device 60 can be increased.

Further, since the fixed block 330 is provided radially inward of the magnet unit 316, the load generated by the inertia of the rotor 300 is applied to the fixed block 330 radially outward from the magnet unit 316. can be avoided. In addition, since the fixing block 330 is provided radially inward of the magnet unit 316, the portion of the magnet holder 320 radially outward of the magnet unit 316 can be reduced in size and weight. Therefore, it is possible to suppress the inertia from increasing as the rotor 300 rotates.

According to this embodiment, in the magnet unit 316 , the unit outer peripheral end 316 b is hooked on the outer peripheral engaging portion 322 . The plurality of magnet units 316 also includes an inclined magnet unit 317 and a parallel magnet unit 318 . With this configuration, when an operator arranges a plurality of magnet units 316 in the circumferential direction CD in the manufacturing process of the rotor 300, the last magnet unit 316 cannot be hooked on the outer peripheral engaging portion 322. can be avoided. Specifically, by making the last one a parallel magnet unit 318, this parallel magnet unit 318 is inserted between two magnet units 316 adjacent to each other in the circumferential direction CD, while allowing the parallel magnet unit 318 to It can be hooked on the engaging portion 322 .

For example, when the operator replaces the last one magnet unit 316 with the inclined magnet unit 317, the inclined magnet unit 317 is inserted between the two adjacent magnet units 316 in the circumferential direction CD, and the outer peripheral engaging portion 322 Can't be hooked on. This is because the width dimension of the unit outer peripheral end 316 b of the inclined magnet unit 317 is larger than the separation distance between the two magnet units 316 radially inside the outer peripheral engaging portion 322 .

According to this embodiment, the outer peripheral engaging portion 322 is hooked on the outer peripheral tapered surface 316e from the axial gap 475 side. In this configuration, by using the outer peripheral tapered surface 316e, the magnet unit 316 can be hooked to the outer peripheral engaging portion 322 without causing the outer peripheral engaging portion 322 to protrude from the first unit surface 316g toward the axial gap 475. . Since the outer peripheral engaging portion 322 does not protrude toward the axial gap 475 in this way, the axial gap 475 can be made as small as possible.

According to this embodiment, a plurality of fixed blocks 330 are arranged in the circumferential direction CD. In this configuration, the weight of the rotor 300 can be reduced by reducing the size of the fixed blocks 330 so that there is a gap between the two fixed blocks 330 adjacent in the circumferential direction CD.

According to this embodiment, in the magnet fixture 335 , the fixing head 337 is hooked on the magnet holder 320 from the side opposite to the axial gap 475 . With this configuration, a configuration in which the fixed head 337 does not protrude from the fixed block 330 toward the axial gap 475 can be realized. Further, in this configuration, by simply adjusting the length of the fixed shaft portion 336, a configuration in which the fixed shaft portion 336 does not protrude from the fixed block 330 toward the axial gap 475 can be realized. Therefore, the axial gap 475 can be made as small as possible by not projecting the magnet fixture 335 toward the axial gap 475 side. In other words, the axial gap 475 can be reliably secured by realizing a configuration in which the magnet fixture 335 does not interfere with the stator 200 .

Furthermore, by adjusting the amount of screwing of the fixed shaft portion 336 into the block hole 333, the strength with which the fixed block 330 is pressed against the magnet unit 316 can be adjusted. By pressing the fixing block 330 against the magnet unit 316 by the axial force of the magnet fixture 335 in this way, it is possible to determine the position of the magnet unit 316 with high accuracy and to firmly fix the magnet unit 316 to the magnet holder 320 . be possible.

According to this embodiment, the holder receiving surface 328a and the block receiving surface 330b are slanted with respect to the motor axis Cm, so that the position of the fixed block 330 can be adjusted in the radial direction RD. . In this configuration, for example, when the position of the fixing block 330 is adjusted in the radial direction RD according to the size and shape of the magnet unit 316, the fixing block 330 is shifted in the axial direction AD so that the holder receiving surface 328a and the block are aligned. It can be brought into contact with the receiving surface 330b. That is, between the magnet unit 316 and the holder receiving portion 328, the fixing block 330 can be well settled with respect to the magnet unit 316 and the holder receiving portion 328. Therefore, even if the sizes and shapes of the plurality of magnet units 316 vary slightly due to manufacturing errors or the like, the magnet units 316 can be fixed by the fixing block 330 .

According to this embodiment, the holder receiving surface 328a and the block receiving surface 330b overlap. In this configuration, the holder receiving surface 328a and the block receiving surface 330b can be brought into surface contact with each other. Therefore, it is possible to realize a configuration in which positional displacement of the fixing block 330 with respect to the holder receiving portion 328 is unlikely to occur.

According to this embodiment, the position of the magnet unit 316 in the circumferential direction CD is determined by the magnet projections 483 . With this configuration, it is not necessary to determine the position of the magnet unit 316 in the circumferential direction CD with the fixed block 330 . In other words, it is not necessary to provide the fixing block 330 with a portion for determining the position of the magnet unit 316 in the circumferential direction CD. Therefore, it is possible to prevent the shape of the fixed block 330 from becoming complicated.

According to this embodiment, the Halbach array is used for the array of the magnets 310 . In this configuration, there is no need to provide a back yoke on the opposite side of the axial gap 475 across the magnet 310 . Therefore, it is possible to prevent the shape of the magnet holder 320 from becoming complicated and the weight of the rotor 300 from increasing.

<Constituent Group H>
According to the present embodiment, the connection bent portion 212f is provided at a position away from the first coil end portion 211a on the first rotor 300a side toward the second coil end portion 211b in the axial direction AD. With this configuration, even if the embedded portion 255a does not cover the connecting bent portion 212f, the embedded portion 255a can be arranged at a position as far away from the first rotor 300a as possible in the axial direction AD. Therefore, it is possible to prevent the embedded portion 255a from extending so as to protrude from the coil 211 toward the first rotor 300a in the axial direction AD. In addition, it is possible to prevent the coil protection portion 250 from extending toward the first rotor 300a in order to embed the embedded portion 255a in the coil protection portion 250 . Therefore, it is possible to suppress the coil protection portion 250 from increasing in size in the axial direction AD. That is, it is possible to reduce the size of the coil protection portion 250 in the axial direction AD. This makes it possible to prevent the motor device 60 from increasing in size in the axial direction AD, and as a result, it is possible to reduce the size of the motor device 60 .

In this embodiment, since the coil protection part 250 is molded, there is concern that the power lead-out wire 212 may be unintentionally deformed by the injection pressure of the molten resin. In contrast, according to the present embodiment, the portion of the power lead-out line 212 embedded in the coil protection portion 250 is covered with the embedded portion 255a. In this configuration, since the injection pressure of the molten resin is applied to the embedded portion 255a, the embedded portion 255a can suppress the deformation of the power lead-out wire 212 due to the injection pressure of the molten resin.

According to the present embodiment, the connecting bent portion 212f is provided at a position closer to the second coil end portion 211b than the first coil end portion 211a on the first rotor 300a side in the axial direction AD. In this configuration, the distance between the first coil end portion 211a and the connecting bent portion 212f in the axial direction AD is larger than 1/2 of the length dimension of the coil 211 . Therefore, in the embedded portion 255a, the portion covering the power lead-out line 212 between the first coil end portion 211a and the connecting bent portion 212f can be made sufficiently long in the axial direction AD. Therefore, it is possible to prevent the embedded portion 255a from slipping out of the coil protection portion 250 due to the short embedded portion 255a. In this way, it is possible to prevent the grommet 255 from unintentionally falling out of the coil protection portion 250 and prevent the coil protection portion 250 from increasing in size in the axial direction AD.

According to this embodiment, the connecting bent portion 212f is provided at the second coil end portion 211b. With this configuration, the separation distance between the first coil end portion 211a and the connecting bent portion 212f in the axial direction AD can be maximized. Therefore, it is possible to reliably prevent the embedded portion 255a from slipping out of the coil protection portion 250 .

According to this embodiment, the embedded portion 255a extends beyond the first coil end portion 211a toward the second coil end portion 211b in the axial direction AD. Therefore, the embedded portion 255a can be embedded in the coil protection portion 250 as deep as possible. Since the embedding portion 255a is deeply embedded in the coil protection portion 250 in this manner, the embedment portion 255a can be reliably prevented from slipping out of the coil protection portion 250. FIG.

Moreover, the connection bent portion 212f is provided at a position away from the embedded portion 255a toward the second coil end portion 211b in the axial direction AD. In this configuration, it is not necessary to cover the bent portion of the power lead-out line 212, that is, the connection bent portion 212f, with the embedded portion 255a. Therefore, the difficulty of attaching the grommet 255 to the power lead-out line 212 can be reduced. Moreover, by attaching the embedded portion 255a to the bent portion of the power lead-out line 212, it is possible to prevent the grommet 255 from deforming into an unintended shape. For example, it is possible to prevent unintended deformation of the tightening tube portion 461 and unintended deterioration of the adhesion of the tightening tube portion 461 to the power lead-out line 212 .

According to this embodiment, the buried portion 255a extends toward the second coil end portion 211b beyond the protection axis Cp in the axial direction AD. In this configuration, the embedded portion 255a is embedded to a sufficiently deep position in the coil protection portion 250. As shown in FIG. Therefore, it is possible to reliably prevent the embedded portion 255a from coming out of the coil protection portion 250 unintentionally.

According to the present embodiment, in the grommet 255 , the tightening tubular portion 461 covers the power lead wire 212 while being in close contact with the power lead wire 212 . In this configuration, unintentional displacement of the grommet 255 with respect to the power lead-out line 212 can be suppressed by the tightening cylinder portion 461 . Further, when the coil protection portion 250 is molded, the tightening cylinder portion 461 can prevent the molten resin from leaking out from the inside of the grommet 255 .

Moreover, in the grommet 255 , the expansion cylinder portion 462 covers the power lead wire 212 while being separated from the power lead wire 212 . In this configuration, only the tightening tubular portion 461 of the tightening tubular portion 461 and the extended tubular portion 462 is in close contact with the power lead-out line 212 . For this reason, unlike the present embodiment, for example, compared to a configuration in which the entire grommet 255 is in close contact with the power lead wire 212 , the work load when attaching the grommet 255 to the power lead wire 212 can be reduced. For example, the difficulty of inserting the power lead wire 212 into the grommet hole 450 can be reduced.

Furthermore, in the grommet 255 , at least a portion of the expansion tube portion 462 is embedded in the coil protection portion 250 . In this configuration, the molten resin is likely to enter the expansion tube portion 462 when the coil protection portion 250 is molded. Therefore, since the molten resin is present both inside and outside the expansion tubular portion 462, it is possible to suppress excessive deformation of the expansion tubular portion 462 due to the injection pressure of the molten resin.

According to this embodiment, in the coil protection portion 250 , the protection entry portion 252 is inserted between the expansion tube portion 462 and the power lead wire 212 . In this configuration, in the coil protection part 250 , the protection entry part 252 is in close contact with the inner peripheral surface of the expansion tube part 462 , and the protection main body 251 is easily in close contact with the outer peripheral surface of the expansion tube part 462 . Therefore, it is possible to prevent the extension tube portion 462 from unintentionally slipping out of the coil protection portion 250 .

According to this embodiment, the length Lb1 of the tightening tubular portion 461 is smaller than the length Lb2 of the expanding tubular portion 462 in the axial direction AD. With this configuration, it is possible to prevent tightening cylinder portion 461 , which is a portion of grommet 255 in close contact with power lead-out line 212 , from becoming excessively long. For this reason, due to the excessively large contact area where the tightening tube portion 461 is in close contact with the power lead wire 212 , it becomes more difficult for the operator to attach the grommet 255 to the power lead wire 212 . can be avoided.

According to this embodiment, the grommet groove 466 is engaged with the coil protection portion 250 in the embedded portion 255a. Therefore, the engagement between the grommet groove 466 and the coil protection portion 250 can prevent the embedded portion 255a from slipping out of the coil protection portion 250 .

According to the present embodiment, the protection engaging portion 253 included in the coil protection portion 250 engages with the grommet groove 466 by entering the inside of the grommet groove 466 . Therefore, a configuration in which the grommet groove 466 and the protection engaging portion 253 are engaged can be realized. Further, in the grommet 255 , since the engaging portion that engages the protective engaging portion 253 is the grommet groove 466 , it is not necessary to project this engaging portion outward from the grommet 255 . Therefore, it is possible to prevent unintended deformation and breakage of the engaging portion of the grommet 255 during manufacturing of the motor device 60 . By engaging the protective engaging portion 253 with the grommet groove 466 in which unintended deformation and damage are unlikely to occur in this way, the grommet 255 can be reliably prevented from slipping out of the coil protective portion 250 .

<Constructive group I>
According to this embodiment, the rim 344 that supports the rotor 300 against the attractive force F1 between the coil 211 and the magnet 310 is located radially outwardly away from the shaft body 341 . This configuration allows the rim 344 to be positioned as close to the magnet 310 as possible. Therefore, the rim 344 can prevent the rotor 300 from deforming in the axial direction AD in the direction in which the magnet 310 is attracted to the coil 211 . That is, the rim 344 can reduce the warping of the magnet holder 320 . Therefore, in the motor device 60, it is possible to suppress the occurrence of an abnormality caused by the deformation of the rotor 300. FIG.

Abnormalities caused by deformation of rotor 300 include, for example, contact of rotor 300 with stator 200 and excessive deformation of rotor 300 . Therefore, according to the present embodiment, the rim 344 can prevent the rotor 300 from contacting the stator 200 and excessive deformation of the rotor 300 .

According to this embodiment, the rim 344 is provided at a position where the distance LI5 to the magnet 310 is smaller than the distance LI6 to the shaft body 341 . In this configuration, rim 344 is positioned closer to magnet 310 such that distance LI5 is smaller than distance LI6. In this way, since the portion between the rim 344 and the magnet 310 in the rotor 300 is shortened in the radial direction, deformation of this portion is less likely to occur.

According to this embodiment, the rim 344 is provided at a position where the distance LI1 to the holder outer peripheral end 320b is smaller than the distance LI2 to the motor axis Cm. In this configuration, the distance LI1 is provided closer to the holder outer peripheral end 320b as the distance LI1 becomes smaller than the distance LI2. In rotor 300, there is magnet 310 between rim 344 and holder outer peripheral edge 320b. Therefore, the portion between the rim 344 and the holder outer peripheral end 320b in the rotor 300 is shortened, and the portion between the rim 344 and the magnet 310 is shortened. Therefore, deformation of the portion between rim 344 and magnet 310 in rotor 300 is less likely to occur.

According to this embodiment, the annularly formed rotor 300 is provided at a position spaced radially outward from the shaft body 341 . With this configuration, the width dimension of the rotor 300 can be minimized in the radial direction RD. Moreover, the rim 344 is provided between the holder inner peripheral end 320 a and the magnet 310 with respect to the rotor 300 . With this configuration, the portion between the rim 344 and the magnet 310 can be further shortened in the radial direction RD in the rotor 300 whose width dimension in the radial direction RD is minimized. Therefore, deformation of the rotor 300 between the rim 344 and the magnets 310 can be reliably suppressed.

According to this embodiment, the rim 344 extends in the axial direction AD so as to bridge the first rotor 300a and the second rotor 300b, and the rotor 300a is pushed against the attraction force F1 applied to each of the rotors 300a and 300b. , 300b. In this configuration, the stress applied to the rim 344 by the attractive force F1 on the first rotor 300a occurs in a direction that brings the rim 344 closer to the second rotor 300b. On the other hand, the stress applied to the rim 344 by the attractive force F1 to the second rotor 300b is generated in a direction that brings the rim 344 closer to the first rotor 300a. Thus, the stress applied to the rim 344 by the attraction force F1 to the first rotor 300a and the stress applied to the rim 344 by the attraction force F1 to the second rotor 300b are likely to cancel each other out at the rim 344. Therefore, it is possible to suppress the deformation of the shaft flange 342 in the direction in which the rim 344 moves in the axial direction AD due to the attraction force F1 between the rotors 300a and 300b and the stator 200 .

For example, unlike the present embodiment, a configuration in which the motor device 60 does not have the second rotor 300b is assumed. In this configuration, when an attractive force F1 is generated between the first rotor 300a and the stator 200, the attractive force F1 tends to bring the rim 344 closer to the stator 200 in addition to the first rotor 300a. Therefore, even if the deformation of the first rotor 300 a is restricted by the rim 344 , there is concern that the shaft flange 342 will deform such that the rim 344 approaches the stator 200 .

Further, in this embodiment, a plurality of spokes 343 are arranged in the circumferential direction CD. Therefore, the weight of the shaft flange 342 can be reduced as compared with a configuration in which the rim 344 and the shaft main body 341 are connected by a plate-like member extending in a direction orthogonal to the axial direction AD, for example. Moreover, as described above, the stress applied to the rim 344 by the attractive forces F1 of the rotors 300a and 300b is canceled, so even if the weight of the shaft flange 342 is reduced by the plurality of spokes 343, the spokes 343 are deformed. It is difficult to do.

According to this embodiment, the spokes 343 are connected to a portion of the rim 344 between the first rotor 300a and the second rotor 300b. With this configuration, the portion of the rim 344 between the spokes 343 and the first rotor 300a can be made as short as possible in the axial direction AD. Therefore, due to the attraction force F1 to the first rotor 300a. It is possible to suppress deformation of the portion of the rim 344 between the spokes 343 and the first rotor 300a. A similar effect can be obtained in the second rotor 300b. For example, the portion of the rim 344 between the spokes 343 and the second rotor 300b can be made as short as possible in the axial direction AD. Therefore, due to the attraction force F1 to the second rotor 300b. It is possible to suppress deformation of the portion of the rim 344 between the spokes 343 and the second rotor 300b.

According to this embodiment, the holder fixture 350 is provided at a position away from the rim 344 in the radial direction RD on the side opposite to the magnet. In this configuration, it is possible to improve the load bearing capacity of the holder fixture 350 by utilizing the "lever principle" with the rim distal end portion 344a as a fulcrum. Therefore, it is possible to prevent the fixing between the rotor 300 and the spokes 343 by the holder fixture 350 from being released by the attraction force F1.

According to the present embodiment, the pressing force F3 applied to the rotor 300 by the holder fixture 350 produces a bending stress F2 that resists the attraction force F1. Therefore, the rigidity of the magnet holder 320 and the attractive force F1 are well balanced, so that the magnet holder 320 can be prevented from being held in a curved shape so that the magnet 310 approaches the stator 200. - 特許庁For example, by canceling the attractive force F1 and the bending stress F2, the original shape of the magnet holder 320 can be maintained.

According to this embodiment, the rim 344 is integrally formed with the shaft body 341 . In this configuration, the rim 344 does not need to be retrofitted to the shaft body 341 by welding, bolts, or the like. Therefore, the fixation between the rim 344 and the shaft body 341 is not released due to the generation of the attraction force F1 or the like. The integral molding of the rim 344 and the shaft main body 341 can suppress occurrence of abnormality in the motor device 60 .

<Constituent group K>
According to this embodiment, the resolver 421 is inserted between the power busbar 261 and the shaft body 341 . In this configuration, the space between the power busbar 261 and the shaft body 341 can be used as a housing space for housing the resolver 421 . In this manner, at least a portion of the resolver 421 and the power bus bar 261 are arranged in the radial direction RD, thereby suppressing an increase in size of the motor device 60 in the axial direction AD.

Moreover, the resolver 421 is provided at a position away from the power bus bar 261 inward in the radial direction RD. In this configuration, the influence caused by the current flowing through the power bus bar 261 does not easily reach the resolver 421 . This influence includes, for example, the magnetic field generated by the current flowing through the power busbar 261 generating noise in the detection signal of the resolver 421 . Since the resolver 421 and the power bus bar 261 are separated from each other in this manner, noise is less likely to occur in the detection signal of the resolver 421 . Therefore, it is possible to prevent the detection accuracy of the resolver 421 from deteriorating due to the energization of the power bus bar 261 .

As described above, the detection accuracy of the resolver 421 can be improved while downsizing the motor device 60 .

According to this embodiment, the power busbar 261 and the resolver 421 are arranged in the radial direction RD along the rear frame 370 . With this configuration, both the resolver 421 and the power bus bar 261 can be fixed to the rear frame 370 while achieving a state in which the resolver 421 enters between the power bus bar 261 and the shaft body 341 .

According to this embodiment, the resolver 421 is provided on the side opposite to the stator 200 and the rotor 300 with the rear frame 370 interposed therebetween. In this configuration, the rear frame 370 restricts the influence caused by the stator 200 and the rotor 300 from reaching the resolver 421 . Effects caused by the stator 200 include noise generated in the detection signal of the resolver 421 by the magnetic field generated by the current flowing through the coil 211 . Effects caused by the rotor 300 include the generation of noise in the detection signal of the resolver 421 by the magnetic field generated by the magnet 310 . Since the rear frame 370 is provided between the resolver 421 and the stator 200 and the rotor 300 in this manner, noise is less likely to occur in the detection signal of the resolver 421 . Therefore, it is possible to prevent the detection accuracy of the resolver 421 from deteriorating due to the existence of the stator 200 and the rotor 300 .

According to this embodiment, the power bus bar 261 is provided at a position closer to the housing body 71 than the resolver 421 in the radial direction RD. With this configuration, the power bus bar 261 can be arranged at a position as far away as possible from the resolver 421 in the radial direction RD. Therefore, the positional relationship between the power bus bar 261 and the resolver 421 can prevent the detection accuracy of the resolver 421 from deteriorating as the power bus bar 261 is energized.

According to this embodiment, the power bus bar 261 is provided at a position aligned with the coil portion 215 in the axial direction AD. With this configuration, the power bus bar 261 can be arranged at a position as close as possible to the coil portion 215 . Therefore, for example, it is not necessary to route the power lead wire 212 so as to pass through a position near the resolver 421 . Therefore, the influence of the current flowing through the power lead-out line 212 hardly reaches the resolver 421 . The effect of this is that the magnetic field generated by the current flowing through the power lead-out line 212 causes noise in the detection signal of the resolver 421, and the like. By arranging the power bus bar 261 and the coil portion 215 in the axial direction AD in this way, it is possible to suppress the occurrence of noise in the detection signal of the resolver 421 .

According to this embodiment, the neutral point bus bar 290 is provided at a position away from the resolver 421 in the axial direction AD. In this configuration, the influence caused by the current flowing through the neutral point busbar 290 hardly reaches the resolver 421 . This influence includes, for example, the magnetic field generated by the current flowing through the neutral point bus bar 290 generating noise in the detection signal of the resolver 421 . Since the resolver 421 and the neutral point bus bar 290 are separated from each other in this manner, noise is less likely to occur in the detection signal of the resolver 421 . Therefore, it is possible to prevent the detection accuracy of the resolver 421 from deteriorating as the neutral point bus bar 290 is energized.

According to this embodiment, the neutral point bus bar 290 is provided on the opposite side of the resolver 421 via the spokes 343 in the axial direction AD. In this configuration, the spokes 343 restrict the influence caused by the current flowing through the neutral point bus bar 290 from reaching the resolver 421 . Therefore, even if the resolver 421 is arranged at a position as close as possible to the neutral point bus bar 290 in the axial direction AD, the spokes 343 can suppress the deterioration of the detection accuracy of the resolver 421 . Therefore, the spokes 343 can both reduce the size of the motor device 60 in the axial direction AD and improve the detection accuracy of the resolver 421 .

According to this embodiment, the neutral point bus bar 290 is provided on the opposite side of the resolver 421 via the first rotor 300a in the axial direction AD. In this configuration, the first rotor 300 a restricts the influence caused by the current flowing through the neutral point bus bar 290 from reaching the resolver 421 . Therefore, even if the resolver 421 is arranged at a position as close as possible to the neutral point bus bar 290 in the axial direction AD, the first rotor 300a can suppress the deterioration of the detection accuracy of the resolver 421 . Therefore, both the downsizing of the motor device 60 in the axial direction AD and the enhancement of the detection accuracy of the resolver 421 can be achieved by the first rotor 300a.

According to this embodiment, the neutral point bus bar 290 is provided between the power bus bar 261 and the resolver 421 in the radial direction RD. In this configuration, power bus bar 261 and resolver 421 are separated in radial direction RD such that neutral point bus bar 290 is arranged between power bus bar 261 and resolver 421 . Therefore, the decrease in detection accuracy of resolver 421 due to energization of power bus bar 261 can be suppressed by the positional relationship between power bus bar 261 and resolver 421 with neutral point bus bar 290 as a reference.

According to this embodiment, the neutral point bus bar 290 is provided between the first rotor 300a and the second rotor 300b in the axial direction AD. In this configuration, a configuration in which the rotor 300 is arranged between the resolver 421 and the neutral point bus bar 290 can be realized regardless of whether the resolver 421 is provided on the first rotor 300a side or the second rotor 300b side. Therefore, the degree of freedom regarding the position of the neutral point bus bar 290 is increased in realizing a configuration in which the rotor 300 suppresses the deterioration of the detection accuracy of the resolver 421 due to the energization of the neutral point bus bar 290. can be done.

According to this embodiment, the magnets 310 are arranged in a Halbach arrangement, so that the magnetic flux extending from the magnets 310 is less likely to leak out of the magnet holder 320 . Thus, the leakage magnetic flux from the rotor 300 can be reduced by the Halbach arrangement. Therefore, a configuration in which the magnetic field generated by the magnet 310 hardly reaches the resolver 421 can be realized by the Halbach arrangement. Therefore, it is possible to prevent the detection accuracy of the resolver 421 from deteriorating due to the magnetic field of the magnet 310 .

<Constituent group L>
According to the present embodiment, the ground magnet surfaces such as the first magnet surface 310g are surfaces that are ground so as to span the plurality of magnet pieces 505 and extend flat. In this configuration, on the ground surface of the magnet, grinding suppresses the occurrence of a step at the boundary between two adjacent magnet pieces 505 . Therefore, it is possible to improve the shape accuracy of the ground magnet surface such as the first magnet surface 310g. The effect of increasing the shape accuracy is given to the magnet side surface 310c, the inner peripheral tapered surface 310d, the outer peripheral tapered surface 310e, the first magnet surface 310g, and the second magnet surface 310h as the magnet grinding surfaces.

Since the shape accuracy of the ground surface of the magnet is improved in this way, it is possible to prevent the energy efficiency of the motor device 60 from deteriorating. For example, first magnet face 310 g is included in rotor first face 301 forming axial gap 475 . Therefore, the high shape accuracy of the first magnet surface 310g makes it possible to reduce the axial gap 475 as much as possible. By minimizing the axial gap 475 in this manner, the energy efficiency of the motor device 60 can be enhanced.

For example, unlike the present embodiment, assume a configuration in which the shape accuracy of the first magnet surface 310g is low. With this configuration, there is concern that an unintended step may occur on the first magnet surface 310g. Therefore, it is necessary to set the axial gap 475 to be large so that the step of the first magnet surface 310g does not come into contact with the stator 200 . Therefore, the large axial gap 475 reduces the magnetic field generated between the stator 200 and the rotor 300 and reduces the energy efficiency of the motor device 60 .

The second magnet surface 310h is a surface that overlaps the main body inner plate surface 321b in the magnet holder 320 . Therefore, when the shape accuracy of the second magnet surface 310h is high, the position accuracy of the magnet 310 with respect to the magnet holder 320 is high. As a result, the second magnet surface 310h prevents the magnet 310 from protruding toward the axial gap 475, so that the axial gap 475 can be made as small as possible.

For example, unlike the present embodiment, assume a configuration in which the shape accuracy of the second magnet surface 310h is low. In this configuration, there is concern that an unintended step may occur on the second magnet surface 310h. For this reason, the step of the second magnet surface 310h hits the body inner plate surface 321b, and the magnet 310 tends to protrude from the magnet holder 320 toward the axial gap 475 side. Then, it becomes necessary to set the axial gap 475 to be large so that the magnet 310 does not come into contact with the stator 200, and the energy efficiency of the motor device 60 is lowered.

Furthermore, the magnet side surface 310c is a surface that overlaps with the magnet side surface 310c of the adjacent magnet 310 . Therefore, when the shape accuracy of the magnet side surface 310c is high, two adjacent magnet side surfaces 310c with the magnet boundary portion 501 interposed therebetween are likely to come into close contact with each other. As a result, a gap is less likely to occur between the two adjacent magnets 310, so that a weakening of the magnetic field due to leaking magnetic flux from the gap is suppressed. In this way, the magnetic field generated by the plurality of magnets 310 is strengthened, so that the energy efficiency of the motor device 60 can be enhanced.

According to the present embodiment, a magnet ground surface such as the first magnet surface 310g is formed by arranging a plurality of member ground surfaces such as the first piece surface 505g on the same plane. Therefore, even if the member ground surface is formed by a plurality of magnet ground surfaces, it is possible to suppress the occurrence of a step between two adjacent magnet ground surfaces. In other words, it is possible to achieve a configuration in which the ground surface of the magnet extends in a planar manner so as to span the plurality of magnet pieces 505 .

According to this embodiment, since one magnet 310 is formed by stacking a plurality of magnet pieces 505 , eddy currents are less likely to occur in the magnet 310 . Moreover, the thickness dimension of the magnet pieces 505 is the same for the plurality of magnet pieces 505 . With this configuration, the difficulty of generating eddy currents in the magnets 310 can be suppressed to the same extent by the plurality of magnets 310 . Therefore, the loss caused by the eddy current can be reduced in the magnet 310 as a whole. In other words, it becomes easier to manage the eddy current losses that occur in the magnet 310 .

According to this embodiment, the magnet 310 has a shape in which the stacking direction of the plurality of magnets 310 is the longitudinal direction, and the direction orthogonal to the stacking direction is the lateral direction. Therefore, the plate surface of the magnet piece 505 can be made as small as possible. Therefore, the strip magnet 512 used for manufacturing the magnet 310 can be made smaller. By reducing the size of the strip magnet 512, it is possible to reduce the work load, cost, etc., when manufacturing the magnet 310. FIG. For example, by miniaturizing the strip magnets 512, it is possible to reduce the difficulty of the work of manufacturing the strip magnets 512 from the sintered block 511 in the strip process. In addition, since the strip magnets 512 are miniaturized, it is possible to reduce the degree of difficulty in bonding the plurality of strip magnets 512 in the magnet base material process.

According to the present embodiment, the unit ground surfaces such as the first unit surface 316g are surfaces that are ground so as to bridge the magnet ground surfaces such as the first magnet surface 310g and extend in a plane. In this configuration, for example, on the first unit surface 316g, the occurrence of a step in the unit inner boundary portion 501a is suppressed by grinding. Therefore, the shape accuracy of the first unit surface 316g can be improved. Similar to the first unit surface 316g, the unit side surface 316c, the inner peripheral tapered surface 316d, the outer peripheral tapered surface 316e, and the second unit surface 316h can exhibit the effect of increasing the shape accuracy.

In this way, it is possible to prevent the energy efficiency of the motor device 60 from deteriorating due to the increased shape accuracy of the unit grinding surface. For example, first unit surface 316 g is included in rotor first surface 301 forming axial gap 475 . Therefore, the high shape accuracy of the first unit surface 316g enables the axial gap 475 to be minimized.

For example, unlike the present embodiment, assume a configuration in which the shape accuracy of the first unit surface 316g is low. In this configuration, there is concern that an unintended step may occur on the first unit surface 316g. Therefore, it is necessary to set the axial gap 475 to be large so that the step of the first unit surface 316g does not come into contact with the stator 200. FIG.

In addition, the second unit surface 316h is a surface that overlaps the main body inner plate surface 321b in the magnet holder 320 . Therefore, when the shape accuracy of the second unit surface 316h is high, the positional accuracy of the magnet unit 316 with respect to the magnet holder 320 is high. This prevents the second unit surface 316h from projecting the magnet unit 316 toward the axial gap 475, so that the axial gap 475 can be made as small as possible.

For example, unlike the present embodiment, assume a configuration in which the shape accuracy of the second unit surface 316h is low. In this configuration, there is concern that an unintended step may occur on the second unit surface 316h. Therefore, when the step of the second unit surface 316h hits the body inner plate surface 321b, the magnet 310 tends to protrude from the magnet holder 320 toward the axial gap 475 side.

Furthermore, the unit side surface 316c is a surface that overlaps with the unit side surface 316c of the adjacent magnet unit 316 . Therefore, when the shape accuracy of the unit side surfaces 316c is high, the two unit side surfaces 316c adjacent to each other via the unit outer boundary portion 501b are likely to come into close contact with each other. Then, since a gap is less likely to occur between the two adjacent magnet units 316, it is suppressed that the magnetic field is weakened due to, for example, leaking magnetic flux from the gap. In this way, the magnetic field generated by the plurality of magnet units 316 is strengthened, so that the energy efficiency of the motor device 60 can be enhanced.

According to this embodiment, in the inclined magnet unit 317 and the parallel magnet unit 318, the magnet piece 505 of each of the plurality of magnets 310 extends in the direction orthogonal to the unit centerline C316. In this configuration, the angle of the magnet piece 505 with respect to the unit centerline C316 is shared by the plurality of magnets 310 . Therefore, it is not necessary to individually set the angles of the magnet pieces 505 with respect to the unit centerline C316 for the plurality of magnets 310 . Therefore, it becomes easier to manage the orientation of each of the plurality of magnets 310 . As a result, in the manufacturing process of the magnet unit 316, it is possible to reduce the work load when individually setting the orientation of each of the plurality of magnets 310. FIG.

According to this embodiment, the two magnets 310 adjacent to each other across the unit inner boundary portion 501a are oriented so as to face the same side in the circumferential direction CD. In this configuration, repulsive force is less likely to occur between two magnets 310 adjacent to each other across the unit inner boundary portion 501a. Therefore, in the manufacturing process of the magnet unit 316, the operator does not need to adhere the two magnets 310 against the repulsive force generated between them. That is, when an operator bonds two magnets 310 together, it is less likely that the magnets 310 will be released due to the repulsive force generated between the two magnets 310 . Therefore, it is possible to reduce the work load when bonding the two magnets 310 together.

According to this embodiment, the two magnets 310 adjacent to each other across the unit outer boundary portion 501b are oriented so as to face opposite to each other in the circumferential direction CD. In this configuration, two magnets 310 adjacent to each other across the unit outer boundary 501b are likely to generate a repulsive force. Since the two magnets 310 that are a combination that easily generates a repulsive force are adjacent to each other across the unit outer boundary portion 501b, the two magnets 310 that are adjacent to each other across the unit inner boundary portion 501a have a repulsive force. It is not necessary to make combinations that are likely to occur. Therefore, in the manufacturing process of the magnet unit 316, it is not necessary to bond the two magnets 310, which are a combination that tends to generate a repulsive force. Therefore, the work load when manufacturing the magnet unit 316 can be reduced.

According to the present embodiment, in the manufacturing process of the magnet 310, the magnet base material 513 is formed with magnet planes such as the first magnet surface 310g that spans the plurality of strip magnets 512 and extends in a planar shape. Material 513 is ground. In this configuration, the magnet base material 513 is ground to suppress the occurrence of a step at the boundary between two adjacent strip magnets 512 on the magnet plane. Therefore, the shape accuracy of the magnet plane such as the first magnet surface 310g can be improved. The effect of increasing the shape accuracy is given to the magnet side surface 310c, the inner peripheral tapered surface 310d, the outer peripheral tapered surface 310e, the first magnet surface 310g, and the second magnet surface 310h as magnet planes. Since the shape accuracy of the magnet plane is improved in this way, it is possible to suppress the decrease in the energy efficiency of the motor device 60 .

According to this embodiment, the strip magnet 512 is manufactured through the sintering process and the strip process. After the sintering process and the strip process, the unit base material 514 is ground in the magnet side surface process, the first shaping process, and the second shaping process. In other words, a grinding process is performed to collectively grind the plurality of strip magnets 512 forming the unit base material 514 . Therefore, it is not necessary to grind the strip magnet 512 in the sintering process and the strip process. In this manner, since the plurality of strip magnets 512 are ground together, the number of man-hours for grinding can be reduced compared to a configuration in which each of the plurality of strip magnets 512 is ground individually. Therefore, the work load when manufacturing the magnet 310 and the magnet unit 316 can be reduced.

<Constituent Group M>
According to this embodiment, in the axial gap 475, the gap outer peripheral end 476 communicates with the opposing region 472 through the outer peripheral region 473, and the gap inner peripheral end 477 communicates with the opposing region 472 through the holder adjustment hole 326, the holder central hole 324, or the like. are communicated. In this configuration, the gas easily flows into the axial gap 475 from one of the gap outer peripheral end 476 and the gap inner peripheral end 477, and the gas in the axial gap 475 easily flows out from the other. That is, the gas easily passes through the axial gap 475 in the radial direction RD. Therefore, the heat generated between the stator 200 and the rotor 300 is easily released from the axial gap 475 together with the gas that has flowed into the axial gap 475 . Therefore, it is possible to suppress the accumulation of heat between stator 200 and rotor 300 . Thereby, the cooling effect of the motor device 60 can be enhanced.

The motor device 60 is configured such that the magnetic field generated by the magnet 310 and the coil 211 is strong in the region between the magnet 310 and the coil 211 . Therefore, heat is likely to be generated in the region between the magnet 310 and the coil 211 due to the strong magnetic field. Since the axial gap 475 includes the area between the magnet 310 and the coil 211, the axial gap 475 tends to generate heat. Therefore, making it easier for the gas to pass through the axial gap 475 in the radial direction RD is effective in enhancing the cooling effect of the motor device 60 .

According to this embodiment, the holder ribs 323 of the rotor 300 rotate together with the holder body 321 to generate an airflow in the counter area 472 . In this configuration, the airflow generated by the holder ribs 323 easily flows in the radial direction RD, so a configuration in which the airflow easily passes through the axial gap 475 in the radial direction RD can be realized.

Further, the holder ribs 323 extend in the radial direction RD along the holder body 321 while protruding from the holder body 321 in the axial direction AD. In this configuration, the holder ribs 323 can restrict the deformation of the magnet holder 320 such that it expands or contracts in the axial direction AD. Therefore, the holder ribs 323 can prevent the magnet holder 320 from bending in the axial direction AD due to the attractive force acting between the magnet 310 and the coil 211 . Therefore, the holder ribs 323 can be provided with two functions: a function of suppressing deformation of the rotor 300 and a function of generating an airflow in the opposite region 472 . This can prevent the shape of the rotor 300 from becoming complicated, for example, compared to a configuration in which the rotor 300 is separately provided with these two functions. In addition, the number of parts constituting motor device 60 can be reduced compared to a configuration in which a dedicated member for generating airflow in opposite region 472 is provided separately from rotor 300 .

According to this embodiment, the holder adjustment holes 326 are arranged in the holder ribs 323 in the rotor 300 in the circumferential direction CD. With this configuration, the air flow generated by the gas stirred by the holder ribs 323 as the rotor 300 rotates easily passes through the holder adjustment holes 326 . Therefore, the airflow passing through the axial gap 475 through the holder adjustment hole 326 can be increased. Therefore, the heat dissipation effect of the axial gap 475 by the airflow passing through the axial gap 475 can be enhanced.

According to this embodiment, one holder adjustment hole 326 is provided between two holder ribs 323 adjacent to each other in the circumferential direction CD, and a plurality of holder adjustment holes 326 are arranged in the circumferential direction CD. In this configuration, the gas that is agitated by the holder ribs 323 and passes through the holder adjustment holes 326 can be increased. Therefore, the heat dissipation effect exhibited by the gas passing through the axial gap 475 can be enhanced.

According to this embodiment, the drive ribs 395 are aligned in the axial direction AD with the holder ribs 323 via the second opposing regions 472b and extend in the radial direction RD. In this configuration, the holder ribs 323 move relative to the drive ribs 395 as the second rotor 300b rotates, thereby facilitating agitation of gas in the second opposite region 472b. Therefore, the gas flowing out from the axial gap 475 to the second opposite region 472 b easily releases heat to the drive frame 390 . Moreover, the drive ribs 395 increase the surface area of the drive frame 390 in the second opposite region 472 b , so that the heat of the gas flowing out from the axial gap 475 is easily transferred to the drive frame 390 .

In this configuration, the drive rib 395 moves in the circumferential direction CD relative to the holder rib 323, thereby generating an airflow flowing along the frame body 391 so as to swirl in a direction orthogonal to the axial direction AD. easier. Therefore, the gas that has flowed out from the axial gap 475 circulates along the frame main body 391 and easily releases heat to the drive frame 390 .

The drive rib 395 extends in the radial direction RD along the frame body 391 while protruding from the frame body 391 in the axial direction AD. Therefore, the drive rib 395 can prevent the drive frame 390 from being deformed such that it expands or contracts in the axial direction AD. Therefore, by providing the drive ribs 395 on the frame main body 391, the frame main body 391 can be made thinner.

According to this embodiment, the holder adjustment hole 326 is provided between the rim 344 and the axial gap 475 in the radial direction RD. In this configuration, the heat existing radially outside the rim 344 is released to the opposite area 472 along with the airflows Fm1 and Fm3 flowing from the axial gap 475 through the holder adjustment holes 326 to the opposite area 472 . Therefore, the holder adjustment hole 326 can prevent heat from being accumulated on the radially outer side of the rim 344 .

According to this embodiment, the holder central hole 324, the holder fixing hole 325 and the holder pin hole 327 are provided between the rim 344 and the shaft body 341 in the radial direction RD. In this configuration, the heat existing radially inward of the rim 344 is transferred to the opposing area 472 along with the airflows Fm2 and Fm4 flowing from the axial gap 475 through the holder central hole 324, the holder fixing hole 325, or the holder pin hole 327 to the opposing area 472. released. Therefore, the holder central hole 324 , the holder fixing hole 325 and the holder pin hole 327 can prevent heat from being accumulated radially inwardly of the rim 344 .

According to this embodiment, the flange vent 346 extends through the rim 344 in the radial direction RD. In this configuration, the airflows Fm2 and Fm4 flowing out of the axial gap 475 can reach the holder central hole 324, the holder fixing hole 325 and the holder pin hole 327 through the flange air hole 346. Therefore, it is possible to achieve a configuration in which the airflows Fm2 and Fm4 are emitted to the opposing area 472 through the holder central hole 324, the holder fixing hole 325 and the holder pin hole 327. FIG.

According to this embodiment, the rim inner peripheral hole 349 penetrates the shaft flange 342 in the axial direction AD. In this configuration, the airflows Fm2 and Fm4 that have passed through the flange vent hole 346 can reach the holder center hole 324, the holder fixing hole 325 and the holder pin hole 327 through the rim inner peripheral hole 349. Moreover, the spokes 343 connect the shaft body 341 and the rim 344 via the rim inner peripheral holes 349 . Therefore, the structure in which the shaft body 341 supports the rim 344 is realized while the airflows Fm2 and Fm4 pass through the rim inner peripheral hole 349 and reach the holder central hole 324, the holder fixing hole 325 and the holder pin hole 327. can.

<Constituent group N>
According to this embodiment, the motor outer peripheral surface 70a is provided so as to be continuously aligned in the axial direction AD with the rear outer peripheral surface 370a. In this configuration, the airflow Fb1 flowing in the axial direction AD is less likely to be disturbed by passing through the boundary between the motor outer peripheral surface 70a and the rear outer peripheral surface 370a. Further, the motor outer peripheral surface 70a is provided outside the motor seal holding portion 78 in the radial direction RD. With this configuration, the airflow Fb1 flowing in the axial direction AD is less likely to be disturbed by passing through the motor seal holding portion 78 . Therefore, it is possible to prevent the heat dissipation effect of the motor fins 72 from being reduced due to, for example, a decrease in the amount of gas flowing along the motor fins 72 due to the turbulence of the airflow Fb1. Therefore, the heat dissipation effect of the motor device 60 can be enhanced.

According to this embodiment, the motor seal portion 402 is provided radially inside the housing body 71 . In this configuration, it is not necessary to provide the motor seal portion 402 radially outside the motor inner peripheral surface 70b and the rear outer peripheral surface 370a. Therefore, it is difficult for the housing body 71 to protrude radially outward in order to cover the motor seal portion 402 from the radially outer side. Therefore, a configuration in which the motor outer peripheral surface 70a and the rear outer peripheral surface 370a are continuously arranged in the axial direction AD can be realized.

According to this embodiment, the power lead wire 212 has a curved shape so as to pass through the radially inner side of the motor seal portion 402 . In this configuration, it is not necessary to change the position of the motor seal portion 402 radially outward in order to realize a configuration in which the power lead-out line 212 and the motor seal portion 402 do not interfere with each other. That is, it is not necessary to change the positions of the motor seal holding portion 78 and the rear holding portion 376 radially outward in order to realize a configuration in which the power lead wire 212 does not interfere with the motor seal holding portion 78 and the rear holding portion 376. . Therefore, it is possible to prevent the motor housing 70 from increasing in size in the radial direction RD while achieving a configuration in which the motor outer peripheral surface 70a and the rear outer peripheral surface 370a are continuously arranged in the axial direction AD.

According to this embodiment, in the power lead-out line 212, the outer circumference lead-out portion 212a and the inner circumference lead-out portion 212b extend in the axial direction AD, while the intersection lead-out portion 212c extends between the motor seal holding portion 78 and the first rotor 300a. extends radially inward so as to pass between the Therefore, it is possible to realize a configuration in which the power lead wire 212 is bent so as to pass through the radially inner side of the motor seal portion 402 .

According to this embodiment, the rear holding portion 376 regulates the displacement of the motor seal portion 402 . In this configuration, the motor seal holding portion 78 does not need to restrict the positional deviation of the motor seal portion 402 . Therefore, the motor seal holding portion 78 does not need to have a special shape for restricting the displacement of the motor seal portion 402 . As a result, the versatility of the motor seal holding portion 78 can be enhanced, and as a result, the versatility of the motor housing 70 can be enhanced.

According to this embodiment, the motor seal holding portion 78 sandwiches the motor seal portion 402 provided to enter the motor side rear groove 376 a between itself and the rear holding portion 376 . In this configuration, since the motor seal portion 402 is inserted into the motor-side rear groove 376a, the rear holding portion 376 can be configured to restrict the displacement of the motor seal portion 402. FIG.

According to this embodiment, the rear holding portion 376 is provided radially inside the motor seal holding portion 78 . In this configuration, it is not necessary to project the rear holding portion 376 radially outward from the motor outer peripheral surface 70a. Therefore, the rear outer peripheral surface 370a and the motor outer peripheral surface 70a can be aligned in the axial direction AD so that the rear outer peripheral surface 370a does not protrude radially outward from the motor outer peripheral surface 70a.

In this embodiment, the motor seal holding portion 78 and the rear holding portion 376 sandwich the motor seal portion 402 in the radial direction RD. Therefore, it is possible to prevent the motor seal portion 402 from protruding from the motor seal holding portion 78 and the rear holding portion 376 in the radial direction RD.

In this embodiment, a duct flow path 105 is formed by a unit duct 100 covering the motor housing 70 from the outer peripheral side of the motor fins 72 . Therefore, if the airflow Fb1 is disturbed in the duct flow path 105, there is a concern that the heat dissipation effect of the motor fins 72 due to the airflow Fb1 may decrease due to, for example, reduction of the airflow Fb1. In contrast, according to the present embodiment, the motor outer peripheral surface 70a and the rear outer peripheral surface 370a are arranged continuously in the axial direction AD, and the motor outer peripheral surface 70a is located radially outside the motor seal holding portion 78. , the turbulence of the airflow Fb1 can be suppressed. Therefore, in the configuration in which the duct flow path 105 is formed by the unit duct 100, it is possible to prevent the heat radiation effect of the motor fins 72 from deteriorating.

In this embodiment, the rear frame 370 is fixed to the motor housing 70 as a fixed object. In this configuration, the rear outer peripheral surface 370a and the motor outer peripheral surface 70a are continuously arranged in the axial direction AD.

According to this embodiment, the motor device 60 is mounted on the aircraft as a drive source for driving and rotating the rotor blades. In this configuration, by enhancing the heat radiation effect of the motor device 60, the flight safety of the aircraft can be enhanced.

<Second embodiment>
In the second embodiment, motor device 60 has only one rotor 300 . That is, the motor device 60 is a single-rotor type rotary electric machine. For example, one rotor 300 is provided between the stator 200 and the inverter device 80 in the axial direction AD. Note that one rotor 300 may be provided on the opposite side of the inverter device 80 via the stator 200 in the axial direction AD.

Also, the motor device 60 may have a plurality of stators 200 . For example, motor device 60 may have two stators 200 . This motor device 60 is a double-stator rotating electric machine. Motor device 60 and inverter device 80 may be provided apart from each other. For example, the motor housing 70 and the inverter housing 90 may be provided independently of each other. Furthermore, the unit duct 100 may not be provided for the motor device unit 50 .

<Constructive group E>
<Third Embodiment>
In the first embodiment described above, the outer circumference lead-out portion 212a extends further than the outer grommet portion 258 toward the side opposite to the power bus bar 261 in the axial direction AD. On the other hand, in the third embodiment, the outer grommet portion 258 extends further than the outer circumference drawing portion 212a toward the side opposite to the power busbar 261 in the axial direction AD. Configurations, actions, and effects that are not specifically described in the third embodiment are the same as those in the first embodiment. 3rd Embodiment demonstrates centering on a different point from the said 1st Embodiment.

As shown in FIG. 133, the outer grommet portion 258 extends further than the outer peripheral lead portion 212a toward the side opposite to the inner peripheral lead portion 212b in the axial direction AD. In the axial direction AD, the coil 211 side end of the outer grommet portion 258 is located closer to the coil 211 than the coil 211 side end of the outer circumference lead portion 212a. In the axial direction AD, the length dimension of the outer grommet portion 258 is larger than the length dimension of the outer peripheral drawn-out portion 212a. 133, similarly to FIG. 87, illustration of the grommet main body 256 and the inner grommet portion 257 of the grommet 255 is omitted.

According to the present embodiment, the outer grommet portion 258 extends further than the outer circumference lead-out portion 212a toward the side opposite to the power bus bar 261 in the axial direction AD. In this configuration, the outer grommet portion 258 can maintain electrical insulation between the outer periphery lead portion 212a and the motor housing 70 in the region opposite to the power bus bar 261 via the outer periphery lead portion 212a in the axial direction AD. For example, even if the position of the outer circumference lead-out portion 212a is unintentionally shifted to the opposite side of the power bus bar 261 in the axial direction AD, the electrical insulation between the outer circumference lead-out portion 212a and the motor housing 70 is degraded. It can be suppressed by the grommet portion 258 .

<Fourth Embodiment>
In the first embodiment, the coil 211 is protected by the coil protection section 250 . In contrast, in the fourth embodiment, the coil 211 is not protected by the coil protection section 250 . Configurations, functions, and effects that are not specifically described in the fourth embodiment are the same as those in the first embodiment. 4th Embodiment demonstrates centering on a different point from the said 1st Embodiment.

As shown in FIG. 134, motor device 60 does not have coil protector 250 . That is, the coil protection portion 250 is not provided for the coil 211 . In this configuration as well, the coil 211 is provided with electrical insulation by the covering portion 222 of the coil wire 220 . 134, in addition to the illustration of the grommet main body 256 and the inner grommet portion 257 of the grommet 255, the illustration of the second rotor 300b is omitted. Note that at least part of the coil 211 may be protected by the coil protection section 250 .

In FIG. 134, illustration of the second rotor 300b is omitted. Note that the motor device 60 may have only one of the first rotor 300a and the second rotor 300b. That is, the motor device 60 may be a single-rotor rotating electric machine.

In the coil portion 215, the power lead-out line 212 is led out from the end portion on the power busbar 261 side in the axial direction AD. In the coil portion 215, the power lead-out line 212 may be led out from an intermediate position in the axial direction AD.

<Fifth Embodiment>
In the first embodiment, the grommet 255 has the inner grommet portion 257 . In contrast, the grommet 255 does not have the inner grommet portion 257 in the fifth embodiment. Configurations, functions, and effects that are not specifically described in the fifth embodiment are the same as those in the first embodiment. In the fifth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 135, the grommet 255 has a grommet body 256 and an outer grommet portion 258 but does not have an inner grommet portion 257 . Also in this configuration, the grommet hole 450 passes through the grommet body 256 in the axial direction AD. The grommet 255 is configured so that molten resin does not enter the grommet hole 450 in the grommet body 256 when the coil protection portion 250 is manufactured. Therefore, leakage of molten resin from the grommet hole 450 is regulated in the process of manufacturing the coil protection portion 250 .

<Sixth embodiment>
In the above-described first embodiment, the outer grommet portion 258 is inserted between the outer peripheral lead portion 212a and the motor inner peripheral surface 70b. In contrast, in the sixth embodiment, a portion of the coil protection portion 250 is inserted between the outer circumference drawing portion 212a and the motor inner circumference surface 70b. Configurations, functions, and effects that are not specifically described in the sixth embodiment are the same as those in the first embodiment. In the sixth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 136, the coil protection portion 250 has a protection body 251 and protection extensions 805 . The protective body 251 protects the coil 211 by covering the coil 211 . The protection extension part 805 is a part of the coil protection part 250 that extends from the protection main body 251 in the axial direction AD. The protection extension 805 extends from the protection main body 251 toward the power busbar 261 in the axial direction AD. The protection extending portion 805 is in a state of being inserted between the outer peripheral drawing portion 212a and the motor inner peripheral surface 70b. The protection extension 805 is included in the coil protection part 250 and thus has electrical insulation. The protection extension 805 corresponds to the outer insulation and lead wire insulation. The protection extending portion 805 is included in the sealing resin portion to which the coil protection portion 250 corresponds.

The protective extension portion 805 has the same configuration as the outer grommet portion 258 of the first embodiment. For example, the protection extension portion 805 extends toward the power busbar 261 side from the outer circumference lead portion 212a in the axial direction AD. It should be noted that the protective extension portion 805 may extend to any extent as long as it extends toward the power bus bar 261 side from the outer circumference drawn portion 212a in the axial direction AD. For example, the protection extension portion 805 may not reach the cross lead portion 212c in the axial direction AD, and may extend toward the power busbar 261 from the inner peripheral bent portion 212e.

In addition, the protection extension 805 is provided individually for each of the plurality of power lead-out lines 212 . The protective extending portion 805 extends toward both sides in the circumferential direction CD from the outer peripheral lead portion 212a. In the circumferential direction CD, the width dimension of the protective extension portion 805 is larger than the width dimension Wa3 of the outer peripheral lead portion 212a. In addition, the protection extension part 805 may extend in the circumferential direction CD so as to span the plurality of power lead-out lines 212 .

The protection extending portion 805 is provided on the outer peripheral side of the outer peripheral lead portion 212a, but is not provided on the inner peripheral side of the outer peripheral lead portion 212a. In other words, the protection extending portion 805 protects the outer peripheral lead portion 212a from the outer peripheral side, but does not protect the outer peripheral lead portion 212a from the inner peripheral side. The protection extending portion 805 does not enter between the outer peripheral drawing portion 212a and the first rotor 300a.

According to this embodiment, the coil protector 250 includes a protective extension 805 as an outer insulator. With this configuration, when manufacturing the motor device 60 , it is possible to form the protection extension portion 805 in the process of forming the coil protection portion 250 . For this reason, the steps for manufacturing the protection extension 805 can be reduced compared to, for example, a configuration in which the protection extension 805 is manufactured in a process different from that of the coil protection portion 250 . In addition, the number of parts constituting the motor device 60 can be reduced as compared with a configuration in which a separate member such as the grommet 255 independent of the coil protection portion 250 is used instead of the protection extension portion 805 .

According to the present embodiment, the protective extension 805 extends toward the power busbar 261 side from the outer circumference lead-out portion 212a in the axial direction AD. In this configuration, the protective extending portion 805 can maintain electrical insulation between the outer peripheral lead portion 212a and the motor housing 70 regardless of the positional relationship between the outer peripheral lead portion 212a and the motor inner peripheral surface 70b. For example, even if the position of the outer circumference lead-out portion 212a is unintentionally shifted toward the power bus bar 261 in the axial direction AD, the electric insulation between the outer circumference lead-out portion 212a and the motor housing 70 is lowered. 805 can be suppressed.

On the other hand, the protection extension portion 805 is not provided between the outer circumference extension portion 212a and the first rotor 300a in the radial direction RD. With this configuration, it is possible to prevent the protective extension 805 from lowering the degree of freedom regarding the arrangement of the power lead wires 212, such as the position of the cross lead 212c. Therefore, the electrical insulation reliability of the motor device 60 can be enhanced by the protective extension portion 805 while increasing the degree of freedom in the arrangement of the power lead-out lines 212 .

Note that, in the present embodiment, a portion of the coil protection portion 250 may be provided radially inward of the outer circumference lead portion 212a. For example, a configuration is adopted in which a part of the coil protection portion 250 enters between the outer circumference drawing portion 212a and the first rotor 300a. In this configuration, a portion of the coil protection portion 250 protects the outer circumference lead portion 212a from the inner circumference side.

<Seventh embodiment>
In the sixth embodiment described above, the protection extension 805 is inserted between the outer circumference drawer 212a and the motor inner circumference 70b. On the other hand, in the seventh embodiment, the outer insulating layer 801 is inserted between the outer outer lead-out portion 212a and the inner peripheral surface 70b of the motor. Configurations, functions, and effects that are not specifically described in the seventh embodiment are the same as those in the first embodiment. In the seventh embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 137, the motor device 60 has an outer insulating layer 801. As shown in FIG. The outer peripheral insulating layer 801 is in a state of entering between the outer peripheral drawn-out portion 212a and the motor inner peripheral surface 70b. The outer peripheral insulating layer 801 is provided between the outer peripheral lead portion 212a and the motor inner peripheral surface 70b in the radial direction RD. The outer insulating layer 801 has electrical insulating properties. The outer insulating layer 801 is made of insulating paint applied to the inner peripheral surface 70b of the motor. An insulating paint is a paint having electrical insulation. The outer insulating layer 801 is a coating layer formed by solidifying the insulating coating applied to the inner peripheral surface 70b of the motor. The outer insulating layer 801 corresponds to the outer insulating portion and the lead wire insulating portion.

It should be noted that the outer peripheral insulating layer 801 does not have to be made of insulating paint as long as it has electrical insulation. For example, the outer insulating layer 801 may be made of a resin material, a rubber material, or the like in the form of a film or a sheet, and then fixed to the inner peripheral surface 70b of the motor with an adhesive or the like.

The outer peripheral insulating layer 801 has the same configuration as the outer grommet portion 258 of the first embodiment. For example, the outer peripheral insulating layer 801 extends toward the power bus bar 261 side from the outer peripheral lead portion 212a in the axial direction AD. It should be noted that the outer peripheral insulating layer 801 may extend to any extent as long as it extends toward the power bus bar 261 side from the outer peripheral drawn-out portion 212a in the axial direction AD. For example, the outer insulating layer 801 may not reach the cross lead portion 212c in the axial direction AD, and may extend toward the power bus bar 261 from the inner curved portion 212e.

In addition, the outer insulating layer 801 is individually provided for each of the plurality of power lead-out lines 212 . The outer peripheral insulating layer 801 extends toward both sides in the circumferential direction CD from the outer peripheral drawn-out portion 212a. In the circumferential direction CD, the width dimension of the outer peripheral insulating layer 801 is larger than the width dimension Wa3 of the outer peripheral lead portion 212a. Note that the outer peripheral insulating layer 801 may extend in the circumferential direction CD so as to span the plurality of power lead-out lines 212 .

The outer peripheral insulating layer 801 is provided on the outer peripheral side of the outer peripheral lead portion 212a, but is not provided on the inner peripheral side of the outer peripheral lead portion 212a. That is, the outer peripheral insulating layer 801 protects the outer peripheral lead portion 212a from the outer peripheral side, but does not protect the outer peripheral lead portion 212a from the inner peripheral side. The outer peripheral insulating layer 801 does not enter between the outer peripheral drawn-out portion 212a and the first rotor 300a.

According to this embodiment, the outer insulating layer 801 as the outer insulating portion is formed of insulating paint applied to the inner peripheral surface 70b of the motor. In this configuration, when manufacturing the motor device 60, the position, size and shape of the outer peripheral insulating layer 801 can be set according to the position and range of application of the insulating paint on the inner peripheral surface 70b of the motor. Therefore, the degree of freedom regarding the arrangement of the outer peripheral insulating layer 801 can be increased. Therefore, the outer peripheral insulating layer 801 can be arranged so that the electrical insulation between the outer peripheral drawn-out portion 212a and the motor housing 70 is enhanced.

According to this embodiment, the outer peripheral insulating layer 801 extends toward the power bus bar 261 side from the outer peripheral lead portion 212a in the axial direction AD. In this configuration, the outer insulating layer 801 can maintain the electrical insulation between the outer peripheral lead portion 212a and the motor housing 70 regardless of the positional relationship between the outer peripheral lead portion 212a and the motor inner peripheral surface 70b. For example, even if the position of the outer peripheral drawn-out portion 212a is unintentionally shifted toward the power busbar 261 in the axial direction AD, the electrical insulation between the outer peripheral drawn-out portion 212a and the motor housing 70 is reduced. can be suppressed by

On the other hand, the outer peripheral insulating layer 801 is not provided between the outer peripheral drawn-out portion 212a and the first rotor 300a in the radial direction RD. In this configuration, it is possible to prevent the peripheral insulating layer 801 from lowering the degree of freedom regarding the arrangement of the power lead wires 212, such as the position of the cross lead portion 212c. Therefore, the electrical insulation reliability of the motor device 60 can be enhanced by the outer peripheral insulating layer 801 while increasing the degree of freedom in arranging the power lead-out lines 212 .

In addition, in the present embodiment, an inner peripheral insulating layer similar to the outer peripheral insulating layer 801 may be provided radially inside the outer peripheral lead portion 212a. For example, the inner peripheral insulating layer may enter between the outer peripheral drawn-out portion 212a and the first rotor 300a. In this configuration, the inner peripheral insulating layer protects the outer peripheral lead portion 212a from the inner peripheral side. The inner peripheral insulating layer is formed by, for example, applying an insulating paint to the outer peripheral lead portion 212a.

<Constituent group F>
<Eighth Embodiment>
In the eighth embodiment, the rear frame 370 is provided with ventilation holes different from the frame openings 373 . Configurations, functions, and effects not specifically described in the eighth embodiment are the same as those in the first embodiment. In the eighth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 138, rear frame 370 has rear vents 811 . The rear air vent 811 penetrates the rear frame 370 in the axial direction AD. A rear vent 811 is an opening provided in the rear frame 370 . The rear vent 811 is located in the rear frame 370 at a distance from the frame opening 373 . The rear vent 811 is located, for example, at a position radially inwardly spaced from the frame opening 373 . A plurality of rear air vents 811 are arranged in the circumferential direction CD. For example, the rear vent 811 and the frame opening 373 are aligned in the radial direction RD.

The rear vent 811 is a vent through which air can pass. Air passing through the rear air vent 811 includes an air flow generated by the holder ribs 323 . For example, when the airflow Fa1 generated by the holder rib 323 flows out from the frame opening 373, the airflow Fa3 flowing from the rear air vent 811 is likely to be generated. By generating the airflow Fa3 in this manner, the airflow Fa1 is likely to be generated. Therefore, the cooling effect of the power lead-out line 212 by the airflow Fa1 can be enhanced by the airflow Fa3. In addition, in FIG. 138, illustration of the power bus bar 261, the first rotor 300a, etc. is omitted.

When the airflows Fa1 and Fa3 are generated, the cooling air from the holder ribs 323 can easily circulate through the frame openings 373 and the rear air vents 811 . For example, the cooling air sent by the holder ribs 323 flows out of the rear frame 370 through the frame openings 373 as the airflow Fa1, flows into the rear frame 370 through the rear ventilation holes 811 as the airflow Fa3, and returns to the holder ribs 323. come. Thus, the cooling air flows so as to circulate between the inside and outside of rear frame 370 .

<Ninth Embodiment>
In the ninth embodiment, the drive frame 390 is provided with ventilation holes. Configurations, functions, and effects not specifically described in the ninth embodiment are the same as those in the first embodiment. In the ninth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 139, drive frame 390 has drive vents 815 . The drive vent 815 extends through the drive frame 390 in the axial direction AD. Drive vent 815 is an opening provided in drive frame 390 . The drive vent 815 is spaced radially outward from the shaft body 341 in the drive frame 390 . The drive vent hole 815 is located, for example, at a position aligned in the axial direction AD at the inner peripheral end of the coil protection portion 250 . A plurality of drive vent holes 815 are arranged in the circumferential direction CD.

Drive vent 815 is a vent through which air can pass. Air passing through the drive vent 815 includes airflow generated by the holder ribs 323 . For example, when the airflow Fa1 generated by the holder ribs 323 flows out from the frame opening 373, the airflow Fa4 flowing from the drive air vent 815 is more likely to occur. By generating the airflow Fa4 in this manner, the airflow Fa1 is likely to be generated. Therefore, the cooling effect of the power lead-out line 212 by the airflow Fa1 can be enhanced by the airflow Fa4. 139, illustration of the power bus bar 261, the first rotor 300a, etc. is omitted.

When the airflows Fa1 and Fa4 are generated, the cooling air from the holder ribs 323 can easily circulate through the frame openings 373 and the drive air vents 815 . For example, the cooling air sent by the holder ribs 323 flows out of the rear frame 370 through the frame opening 373 as the airflow Fa1, and then flows into the drive frame 390 through the drive vent holes 815 as the airflow Fa4. The cooling air then passes through the shaft flange 342 and the magnet holder 320 and returns to the holder ribs 323 . The cooling air passes, for example, between two spokes 343 adjacent in the circumferential direction CD, passes through the shaft flange 342 , passes through the holder fixing holes 325 , and passes through the magnet holder 320 . Thus, the cooling air flows so as to circulate inside and outside the motor housing 70 , the rear frame 370 and the drive frame 390 .

<Tenth Embodiment>
In the first embodiment, the holder rib 323 has both the parallel rib portion 323c and the tapered rib portion 323d. In contrast, in the tenth embodiment, the holder rib 323 has the rib taper portion 323d but does not have the rib parallel portion 323c. Configurations, functions, and effects not specifically described in the tenth embodiment are the same as those in the first embodiment. In the tenth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 140, the holder rib 323 has only the rib taper portion 323d out of the rib parallel portion 323c and the rib taper portion 323d. The rib tapered portion 323d extends in the axial direction AD so as to bridge between the rib inner peripheral end 323a and the rib outer peripheral end 323b. The holder rib 323 has a tapered rib portion 323d over its entire tip. The rib tapered portion 323d is in a state of bridging between the holder inner peripheral end 320a and the holder outer peripheral end 320b.

<Eleventh Embodiment>
In the tenth embodiment, the holder rib 323 has the rib tapered portion 323d but does not have the rib parallel portion 323c. In contrast, in the eleventh embodiment, the holder rib 323 has the parallel rib portion 323c but does not have the tapered rib portion 323d. Configurations, functions, and effects not specifically described in the eleventh embodiment are the same as those in the first embodiment. In the eleventh embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 141, the holder rib 323 has only the rib parallel portion 323c out of the rib parallel portion 323c and the rib tapered portion 323d. The rib parallel portion 323c extends in the axial direction AD so as to bridge between the rib inner peripheral end 323a and the rib outer peripheral end 323b. In the holder rib 323, the entire tip portion is a parallel rib portion 323c. The rib parallel portion 323c is in a state of bridging between the holder inner peripheral end 320a and the holder outer peripheral end 320b.

<Constituent group G>
<Twelfth Embodiment>
In the twelfth embodiment, the rotor 300 may have a yoke. Configurations, functions, and effects not specifically described in the twelfth embodiment are the same as those in the first embodiment. In the twelfth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 142, rotor 300 has back yoke 851 . The back yoke 851 is a yoke and is made of a ferromagnetic material. Back yoke 851 is provided between holder main body 321 and magnet 310 . The back yoke 851 is provided, for example, between the main body inner plate surface 321b and the first unit surface 316g. The back yoke 851 is formed in a plate shape and extends in a direction perpendicular to the axial direction AD. The back yoke 851 is in a state of being superimposed on the second unit surface 316h. Back yokes 851 are provided for all magnets 310 . A plurality of back yokes 851 may be arranged in the circumferential direction CD similarly to the magnets 310 , or may extend in the circumferential direction CD so as to span the plurality of magnets 310 .

In addition, in a configuration in which the arrangement of the magnets 310 is not the Halbach arrangement, a yoke such as the back yoke 851 is preferably provided for the magnets 310 . This configuration allows the magnetic field generated at the axial gap 475 to be reinforced by the yoke.

<Thirteenth Embodiment>
In the first embodiment, one fixing block 330 serves as a fixing member to fix one magnet unit 316 to the magnet holder 320 . In contrast, in the thirteenth embodiment, one fixing member fixes the plurality of magnet units 316 to the magnet holder 320 . Configurations, functions, and effects not specifically described in the thirteenth embodiment are the same as those in the first embodiment. In the thirteenth embodiment, differences from the first embodiment will be mainly described.

As shown in FIG. 143, rotor 300 has assembly block 853 . The assembly block 853 fixes the magnet unit 316 to the magnet holder 320, like the fixing block 330 of the first embodiment. The collective block 853 has a block taper surface 330 a , a block receiving surface 330 b , a block facing surface 330 c , a block inner end surface 331 , a block outer end surface 332 and a block hole 333 , similarly to the fixed block 330 .

The collective block 853 extends in the circumferential direction CD so as to span the plurality of magnet units 316 . The collective block 853 spans, for example, two magnet units 316 . The collective block 853 spans one inclined magnet unit 317 and one parallel magnet unit 318 . A plurality of collective blocks 853 are arranged in the circumferential direction CD. The size and shape of the collective block 853 are the same for the plurality of fixed blocks 330 . The collective block 853 has such a size and shape that the two fixed blocks 330 in the first embodiment are integrated. A collective block 853 corresponds to a fixed member and a collective member.

The collective block 853 is fixed to the magnet holder 320 by the magnet fixture 335, as in the first embodiment. For example, one assembly block 853 is fixed to the magnet holder 320 by one magnet fixture 335 . One collective block 853 is provided with one block hole 333 . Note that one collective block 853 may be fixed to the magnet holder 320 by a plurality of magnet fixtures 335 . In this case, a plurality of block holes 333 are provided in one collective block 853 .

According to this embodiment, the assembly block 853 is provided so as to span the plurality of magnet units 316 and fix the plurality of magnet units 316 to the magnet holder 320 . With this configuration, the number of collective blocks 853 can be reduced with respect to the number of magnet units 316 . Also, it is possible to reduce the number of magnet fixtures 335 according to the number of collective blocks 853 . Therefore, the number of parts constituting rotor 300 can be reduced. Therefore, in the manufacturing process of rotor 300 , it is possible to reduce the workload when fixing assembly block 853 to magnet holder 320 . Also, the weight of the rotor 300 can be reduced.

<14th Embodiment>
In the first embodiment, a plurality of fixing blocks 330 are attached to the magnet holder 320 as fixing members. In contrast, in the thirteenth embodiment, one fixing member is attached to the magnet holder 320 . Configurations, functions, and effects that are not specifically described in the fourteenth embodiment are the same as those in the first embodiment. In the fourteenth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 144, rotor 300 has block ring 855 . The block ring 855 fixes the magnet unit 316 to the magnet holder 320, like the fixing block 330 of the first embodiment. The block ring 855 has a block tapered surface 330 a , a block receiving surface 330 b , a block inner end surface 331 , a block outer end surface 332 and a block hole 333 , similarly to the fixed block 330 . On the other hand, the block ring 855 does not have the block facing surface 330c.

The block ring 855 extends in the circumferential direction CD so as to span the plurality of magnet units 316 . Block ring 855 is formed in an annular shape. The block ring 855 spans all magnet units 316 . The block ring 855 is sized and shaped such that all the fixed blocks 330 in the first embodiment are integrated. Block ring 855 corresponds to a fixed member and a collective member.

The block ring 855 is fixed to the magnet holder 320 by the magnet fixture 335 as in the first embodiment. For example, block ring 855 is secured to magnet holder 320 by a plurality of magnet fasteners 335 . A plurality of block holes 333 are provided in the block ring 855 .

According to this embodiment, the block ring 855 is provided so as to span the plurality of magnet units 316 and fix the plurality of magnet units 316 to the magnet holder 320 . With this configuration, the number of block rings 855 can be reduced with respect to the number of magnet units 316 . That is, the number of block rings 855 can be reduced to one. Also, it is possible to reduce the number of magnet fixtures 335 according to the number of block rings 855 . Therefore, as in the thirteenth embodiment, it is possible to reduce the work load in manufacturing the rotor 300, the weight of the rotor 300, and the like.

<Constituent Group H>
<Fifteenth Embodiment>
In the first embodiment, the grommet 255 has the outer grommet portion 258 . In contrast, the grommet 255 does not have the outer grommet portion 258 in the fifteenth embodiment. Configurations, functions, and effects not specifically described in the fifteenth embodiment are the same as those in the first embodiment. In the fifteenth embodiment, differences from the first embodiment will be mainly described.

As shown in FIGS. 145 and 146, the grommet 255 is not provided with the outer grommet portion 258 . In this embodiment, the grommet 255 does not include the outer grommet portion 258 in the exposed portion 255b. In this embodiment, the inner grommet portion 257 is superimposed on the motor inner peripheral surface 70b.

In addition, in the configuration in which the grommet 255 has the outer grommet portion 258, the outer grommet portion 258 may have any shape. For example, the outer grommet portion 258 may be smaller than the inner grommet portion 257 in terms of the extension dimension extending in the axial direction AD from the grommet ribs 465 . Moreover, the outer grommet portion 258 may be smaller than the inner grommet portion 257 in terms of the width dimension in the circumferential direction CD.

<Constructive group I>
<Sixteenth Embodiment>
In the first embodiment, the rim 344 and the shaft body 341 are integrally molded. On the other hand, in the sixteenth embodiment, the rim 344 is retrofitted and fixed to the shaft body 341 . Configurations, functions, and effects not specifically described in the sixteenth embodiment are the same as those in the first embodiment. In the sixteenth embodiment, the points different from the first embodiment will be mainly described.

In the shaft 340, a shaft flange 342 is attached and fixed to the shaft body 341 later. Thereby, a configuration in which the rim 344 is retrofitted and fixed to the shaft body 341 is realized. The shaft main body 341 and the shaft flange 342 are separate members and fixed by welding, bolts, or the like.

In the process of manufacturing the shaft 340, the worker prepares a first base material 861 and a second base material 862 as shown in FIG. 147 as a preparatory step. The first base material 861 is a base material for manufacturing the shaft body 341 . The first base material 861 is, for example, a columnar member extending in the axial direction AD. The second base material 862 is a base material for manufacturing the shaft flange 342 . The second base material 862 is, for example, a plate-like member extending in a direction perpendicular to the axial direction AD. The first base material 861 and the second base material 862 are made of the same material, for example. Note that the first base material 861 and the second base material 862 may be made of different materials. In FIG. 147, the first base material 861 and the second base material 862 are shown overlapping, but the first base material 861 and the second base material 862 are independent and separate members.

After the preparation process, the operator processes the shapes of the first base material 861 and the second base material 862 in the processing process. The operator cuts the first base material 861 to manufacture the shaft body 341 from the first base material 861 . The operator cuts the second base material 862 to manufacture the shaft flange 342 from the second base material 862 .

According to this embodiment, the rim 344 is retrofitted and fixed to the shaft body 341 . This configuration allows the rim 344 and the shaft body 341 to be manufactured from separate base materials. Therefore, when manufacturing the shaft 340, by separately preparing base materials having shapes suitable for the rim 344 and the shaft main body 341, the material yield is likely to be improved. Therefore, material costs for manufacturing shaft 340 can be reduced.

In this embodiment, the shape and size of the first base material 861 can be matched to the shaft body 341 . Also, the second base material 862 can be shaped and sized to match the shaft flange 342 . Compared to the structure using the shaft base material 490 for manufacturing the shaft 340 as in the first embodiment, in this embodiment, for example, the dot hatched portion shown in FIG. 147 does not need to be used as the base material. Therefore, the material cost of the base material can be reduced by the hatched portion.

<Constituent group J>
<Seventeenth Embodiment>
In the seventeenth embodiment, a portion of the motor housing 70 restricts the stator 200 from being displaced with respect to the motor housing 70 . Configurations, functions, and effects not specifically described in the seventeenth embodiment are the same as those in the first embodiment. In the seventeenth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIGS. 148 and 149, stator 200 has coil body 900 . Coil body 900 is included in coil unit 210 . The coil body 900 has a coil portion 215 and a core unit 230 . A plurality of coil bodies 900 are arranged in the circumferential direction CD along the motor inner peripheral surface 70b. By arranging a plurality of coil bodies 900 in the circumferential direction CD, the multi-phase coils 211 are arranged in the circumferential direction CD. In addition, in FIG. 149, illustration of the power lead-out line 212, the second rotor 300b, and the like is omitted.

The coil body 900 has a coil body end surface 902 and a coil body outer peripheral surface 903 . The coil body end surface 902 and the coil body outer peripheral surface 903 are included in the outer surface of the coil body 900 . The coil body end faces 902 are end faces of the coil body 900 and are arranged in a pair in the axial direction AD. The coil body end face 902 includes the end face of the core 231 and the end face of the bobbin 240 . A pair of coil body end faces 902 correspond to a pair of end faces.

A coil body outer peripheral surface 903 is the outer peripheral surface of the coil body 900 and extends in the winding direction of the coil portion 215 . The coil body outer peripheral surface 903 is provided between the pair of coil body end surfaces 902 . The coil body outer peripheral surface 903 extends in the axial direction AD so as to span the pair of coil body end surfaces 902 . The coil body outer peripheral surface 903 includes the coil outer peripheral surface 913 and the outer peripheral surface of the bobbin 240 .

The coil body 900 has core teeth 901 . A pair of core teeth 901 are arranged in the axial direction AD via the coil portion 215 . A coil portion 215 is provided between a pair of core teeth 901 in the axial direction AD. The core teeth 901 extend in a direction perpendicular to the axial direction AD. Core teeth 901 form coil body end faces 902 . Core teeth 901 include a portion of core unit 230 . Core teeth 901 include, for example, core flange 233 and bobbin flange 242 .

The coil portion 215 has a coil outer peripheral surface 913 . The coil outer peripheral surface 913 is the outer peripheral surface of the coil portion 215 and extends in the winding direction of the coil portion 215 . The coil outer peripheral surface 913 is included in the coil body outer peripheral surface 903 . The coil outer peripheral surface 913 extends in the axial direction AD and spans over the pair of core teeth 901 . The coil outer peripheral surface 913 and the end surfaces of the core teeth 901 are arranged so as to be continuous in the axial direction AD. For this reason, in FIG. 148, the reference numerals of the coil portions 215 are shown assuming that the coil portions 215 are positioned so as to overlap the core teeth 901 . The coil outer peripheral surface 913 corresponds to the outer peripheral surface.

The coil portion 215 has an outer peripheral top portion 911 and an outer peripheral root portion 912 . The outer peripheral top portion 911 is the radially outermost portion of the coil portion 215 . The outer peripheral root portion 912 is the outermost portion of the coil portion 215 in the circumferential direction. A pair of outer peripheral root portions 912 are arranged in the circumferential direction CD.

The coil outer peripheral surface 913 extends in the axial direction AD along the motor inner peripheral surface 70b. A portion of the coil outer peripheral surface 913 between the pair of outer peripheral root portions 912 is curved so as to swell radially outward. The coil outer peripheral surface 913 includes a first curved surface 913a and a second curved surface 913b. The first curved surface 913a and the second curved surface 913b are arranged in the circumferential direction CD. The first curved surface 913a and the second curved surface 913b are curved so as to expand radially outward. The first curved surface 913 a spans between one of the pair of outer peripheral root portions 912 and the outer peripheral top portion 911 . The second curved surface 913 b spans the other outer peripheral base portion 912 and the outer peripheral top portion 911 . The first curved surface 913a is curved so as to swell in one direction in the circumferential direction CD, and the second curved surface 913b is curved so as to swell in the other direction in the circumferential direction CD.

As described above, the outer peripheral surfaces of the core teeth 901 are arranged continuously in the axial direction AD on the coil outer peripheral surface 913 . Therefore, the core teeth 901 have portions corresponding to the outer peripheral top portion 911 and the outer peripheral root portion 912 . Further, the outer peripheral surface of the core teeth 901 includes a portion corresponding to the first curved surface 913a and a portion corresponding to the second curved surface 913b.

The motor housing 70 has a displacement restricting portion 920 . The displacement restricting portion 920 protrudes radially inward from the motor inner peripheral surface 70b. The displacement restricting portion 920 extends along the motor inner peripheral surface 70b in the axial direction AD. A plurality of displacement restricting portions 920 are arranged in the circumferential direction CD along the motor inner peripheral surface 70b. The displacement restricting portion 920 is formed integrally with the housing body 71 and corresponds to an integrated restricting portion. The motor housing 70 has electrical conductivity. In the motor housing 70, both the housing body 71 and the displacement restricting portion 920 are conductive. In this embodiment, a displacement restricting portion 920 is provided in the motor housing 70 instead of the stator holding portion 171 .

The displacement restricting portion 920 has a restricting top portion 921 and a restricting root portion 922 . The restricting top portion 921 is the radially innermost portion of the displacement restricting portion 920 . The restricting base portion 922 is the radially outermost portion of the displacement restricting portion 920 . The width dimension of the restriction top portion 921 is smaller than the width dimension of the displacement restriction portion 920 in the circumferential direction CD. In the displacement restricting portion 920, the width dimension in the circumferential direction CD gradually decreases radially inward. A pair of the restricting base portions 922 are arranged in the circumferential direction CD via the restricting top portions 921 . The restricting top portion 921 is provided in the middle of the pair of restricting root portions 922 in the circumferential direction CD. The restriction top portion 921 and the restriction root portion 922 extend in the axial direction AD along the motor inner peripheral surface 70b.

The displacement restricting portion 920 is provided at a position straddling two coil bodies 900 adjacent in the circumferential direction CD in the circumferential direction CD. Two coil bodies 900 adjacent to each other in the circumferential direction CD may simply be referred to as "two coil bodies 900". The displacement restricting portion 920 extends radially inward so as to enter between the two coil bodies 900 . In the displacement restricting portion 920 , the restricting top portion 921 is located between the two coil bodies 900 . The restricting top portion 921 is positioned so as to be aligned in the circumferential direction CD on the curved surfaces 913 a and 913 b with respect to the two coil bodies 900 . The restricting top portion 921 is positioned between the outer peripheral top portion 911 and the outer peripheral root portion 912 in the radial direction RD with respect to the two coil bodies 900 . In the displacement restricting portion 920 , the restricting root portion 922 is aligned with the outer peripheral top portion 911 in the radial direction RD.

The displacement restricting portion 920 restricts the coil portion 215 from being displaced relative to the motor housing 70 . The displacement restricting portion 920 is hooked on the coil portion 215 to restrict the coil portion 215 from moving in the circumferential direction CD relative to the displacement restricting portion 920 . The displacement restricting portion 920 corresponds to an electrical machinery restricting portion.

The displacement restricting portion 920 has a displacement restricting surface 923 . The displacement restricting surface 923 is a radially inner surface of the outer surface of the displacement restricting portion 920 . The displacement restricting surface 923 faces radially inward as a whole. The displacement restricting surface 923 extends in the axial direction AD along the motor inner peripheral surface 70b. The displacement restricting surface 923 corresponds to the restricting surface.

The displacement restricting surface 923 has a first restricting surface 923a and a second restricting surface 923b. The first restricting surface 923a and the second restricting surface 923b are arranged in the circumferential direction CD. The first restricting surface 923a and the second restricting surface 923b are curved so as to be recessed radially outward. The first restricting surface 923 a spans between one of the pair of restricting base portions 922 and the restricting top portion 921 . The first restricting surface 923a is provided at a position aligned with the second curved surface 913b of the coil portion 215 in the radial direction RD. The first restricting surface 923a faces the second curved surface 913b. The first restricting surface 923a is curved so as to extend along the second curved surface 913b. The gap between the first restricting surface 923a and the second curved surface 913b is substantially uniform both in the circumferential direction CD and in the axial direction AD. The size of the gap between the first restricting surface 923a and the second curved surface 913b is, for example, the separation distance between the first restricting surface 923a and the second curved surface 913b in the direction perpendicular to the first restricting surface 923a.

The second restricting surface 923b spans between the restricting root portion 922 and the restricting top portion 921 of the pair of restricting root portions 922 opposite to the first restricting surface 923a. The second restricting surface 923b is provided at a position aligned with the first curved surface 913a of the coil portion 215 in the radial direction RD. The second restricting surface 923b faces the first curved surface 913a. The second restricting surface 923b is curved so as to extend along the first curved surface 913a. The gap between the second restricting surface 923b and the first curved surface 913a is substantially uniform both in the circumferential direction CD and in the axial direction AD. The size of the gap between the second restricting surface 923b and the first curved surface 913a is, for example, the separation distance between the second restricting surface 923b and the first curved surface 913a in the direction perpendicular to the second restricting surface 923b.

The displacement restricting portion 920 restricts relative displacement of the coil portion 215 with respect to the motor housing 70 when the displacement restricting surface 923 is hooked on the coil outer peripheral surface 913 . For example, the first restricting surface 923a restricts displacement of the coil portion 215 by being hooked on at least a portion of the second curved surface 913b. The second restricting surface 923b restricts displacement of the coil portion 215 by being hooked on at least a portion of the first curved surface 913a.

The plurality of displacement restricting portions 920 are integrated. Two displacement restricting portions 920 adjacent in the circumferential direction CD are connected to each other. In two displacement restricting portions 920 adjacent to each other in the circumferential direction CD, their restricting base portions 922 are connected to each other. The plurality of displacement restricting portions 920 extend annularly in the circumferential direction CD along the motor inner peripheral surface 70b as a whole.

The displacement restricting portion 920 has a restricting end surface 925 . The regulating end faces 925 are end faces of the displacement regulating portion 920 and are arranged in a pair in the axial direction AD. The restricting end face 925 is included in the outer surface of the displacement restricting portion 920 . The restricting end surface 925 extends in a direction perpendicular to the axial direction AD.

As shown in FIG. 149, the displacement restricting portion 920 extends in the axial direction AD so as to bridge the pair of coil body end faces 902 . In the axial direction AD, the length dimension of the displacement restricting portion 920 and the length dimension of the coil body end surface 902 are substantially the same. The pair of regulating end faces 925 are provided at positions aligned in the radial direction RD with the pair of coil body end faces 902 . The displacement restricting portion 920 extends in the axial direction AD so as to span the pair of core teeth 901 . Further, the displacement restricting portion 920 extends so as to protrude further toward the core teeth 901 than the coil portion 215 in the axial direction AD.

As shown in FIGS. 148 and 149, part of the coil protection portion 250 is in a state of being inserted between the displacement restriction portion 920 and the coil body 900. As shown in FIGS. The coil protection portion 250 is made of a resin material containing filler. As a resin material forming the coil protection portion 250, for example, there is a thermosetting resin such as an epoxy resin. The coil protection part 250 is made of a resin material so as to have high electrical insulation, high strength, and high thermal conductivity. The filler contained in the coil protection portion 250 includes, for example, alumina. The coil protector 250 is in close contact with both the coil body 900 and the motor housing 70 . Thereby, the coil protector 250 fixes the coil body 900 to the motor housing 70 .

The coil protector 250 has a protective outer periphery 917 . The protective outer peripheral portion 917 is a portion of the coil protective portion 250 which is inserted between the displacement restricting portion 920 and the coil body 900 . The protective outer peripheral portion 917 enters into the gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 . The protective outer peripheral portion 917 is provided over the entire gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 . The protective outer peripheral portion 917 is in close contact with the displacement restricting surface 923 and the coil outer peripheral surface 913, and the displacement restricting portion 920 and the coil body 900 are fixed.

A protective perimeter 917 extends from the protective body 251 . The protective outer peripheral portion 917 extends in the circumferential direction CD along the displacement restricting surface 923 . The protective outer peripheral portion 917 is in a state of being stretched over a plurality of displacement restricting portions 920 . The protective outer peripheral portion 917 extends in the axial direction AD along the displacement restricting surface 923 . Like the displacement restricting portion 920 , the protective outer peripheral portion 917 spans over the pair of coil body end faces 902 . The coil body 900, the displacement restricting portion 920, and the protective outer peripheral portion 917 are arranged in the radial direction RD.

The protective outer peripheral portion 917 has thermal conductivity as part of the coil protective portion 250 . The protective outer peripheral portion 917 releases heat transmitted from the coil body 900 to the displacement restricting portion 920 . The protective outer peripheral portion 917 corresponds to a gap heat radiating portion. Also, the thickness of the protective outer peripheral portion 917 is substantially uniform both in the circumferential direction CD and in the axial direction AD. The thickness of the protective outer peripheral portion 917 is approximately the same as the size of the gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 in the direction orthogonal to the displacement restricting surface 923, for example. Therefore, the manner in which heat is transmitted from the coil body 900 to the motor housing 70 via the protective outer peripheral portion 917 is easily made uniform in the entire circumferential direction CD. Therefore, it is difficult for the heat radiation effect of the protective outer peripheral portion 917 to vary in the circumferential direction CD.

Next, the process of manufacturing the motor housing 70 in the manufacturing method of the motor device 60 will be described. An operator forms the motor housing 70 by integrally forming the housing main body 71 and the displacement restricting portion 920 . A worker manufactures the motor housing 70 by, for example, cutting a base material. A worker prepares a base material as a preparatory step. The base material is made of a metal material such as aluminum. After the preparatory step, the operator cuts the base material in the processing step, thereby manufacturing the motor housing 70 from the base material. Note that the motor housing 70 may be manufactured by casting.

According to this embodiment, the displacement restricting portion 920 extends radially inward from the housing body 71 so as to enter between two coil portions 215 adjacent in the circumferential direction CD. In this configuration, the movement of the coil portion 215 relative to the motor housing 70 in the circumferential direction CD is restricted by the engagement between the coil portion 215 and the displacement restriction portion 920 . For example, the coil portion 215 and the displacement restricting portion 920 are hooked to each other via the protective outer peripheral portion 917 . Therefore, the displacement restricting portion 920 can prevent the stator 200 from rotating in the circumferential direction CD with respect to the motor housing 70 .

Moreover, the displacement restricting portion 920 is in a state of being close to the coil portion 215 by extending radially inward. With this configuration, the heat of the coil portion 215 is easily transferred to the displacement restricting portion 920 . Therefore, the heat of the coil portion 215 is easily released to the outside through the motor housing 70 . Therefore, the heat dissipation effect of the motor device 60 can be enhanced while suppressing the positional deviation of the stator 200 in the motor device 60 .

In the motor device 60, the rotor 300 and the stator 200 are arranged in the axial direction AD to achieve high output. For this reason, an external force that rotates the stator 200 in the circumferential direction CD as the rotor 300 rotates is likely to be applied to the stator 200 . Therefore, there is concern that the stator 200 may be displaced so as to rotate in the circumferential direction CD relative to the motor housing 70 . In contrast, according to the present embodiment, displacement of the coil portion 215 in the circumferential direction CD is restricted by the displacement restricting portion 920 as described above, so displacement of the stator 200 can be suppressed. Thus, it is effective to apply a configuration in which the displacement of the coil portion 215 is restricted by the displacement restriction portion 920 to the axial gap type motor device 60 .

According to this embodiment, the protective outer peripheral portion 917 is provided in the gap between the coil portion 215 and the displacement restricting portion 920 and releases heat from the coil portion 215 to the displacement restricting portion 920 . Therefore, the heat transferability from the coil portion 215 to the displacement restricting portion 920 can be enhanced by the protective outer peripheral portion 917 . Therefore, the heat dissipation effect of the motor housing 70 can be enhanced by the displacement restricting portion 920 and the protective outer peripheral portion 917 .

According to this embodiment, the protective outer peripheral portion 917 is in close contact with each of the coil portion 215 and the displacement restricting portion 920 . In this configuration, both heat transferability from the coil portion 215 to the protective outer peripheral portion 917 and heat transferability from the protective outer peripheral portion 917 to the displacement restricting portion 920 can be enhanced. Also, in this configuration, relative displacement of the coil portion 215 with respect to the displacement restricting portion 920 can be restricted by the protective outer peripheral portion 917 . Therefore, both the effect of heat radiation from the coil portion 215 to the displacement restricting portion 920 and the effect of suppressing the displacement of the coil portion 215 with respect to the displacement restricting portion 920 can be enhanced by the protective outer peripheral portion 917 .

According to this embodiment, the displacement restricting surface 923 extends so as to overlap the coil outer peripheral surface 913 . With this configuration, the gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 can be minimized. Therefore, heat is easily conducted from the coil outer peripheral surface 913 to the displacement restricting surface 923 . Therefore, by arranging the displacement control surface 923 and the coil outer peripheral surface 913 so as to overlap each other, the heat dissipation effect of the motor device 60 can be enhanced.

According to this embodiment, the displacement restricting portion 920 extends in the axial direction AD so as to span the pair of coil body end faces 902 . In this configuration, heat released from the entire coil body 900 in the axial direction AD is easily transmitted to the entire displacement restricting portion 920 . Therefore, the displacement restricting portion 920 can enhance the effect of releasing the heat of the coil body 900 to the outside through the motor housing 70 .

According to this embodiment, the displacement restricting portion 920 extends in the axial direction AD so as to bridge the pair of core teeth 901 . With this configuration, the heat emitted from the pair of core teeth 901 is easily transmitted to the displacement restricting portion 920 . Therefore, the displacement restricting portion 920 can enhance the effect of releasing the heat of the core teeth 901 to the outside through the motor housing 70 .

According to this embodiment, in the motor housing 70, the housing body 71 and the displacement restricting portion 920 are integrally formed. With this configuration, the displacement restricting portion 920 is not displaced relative to the housing body 71 . Therefore, the displacement restricting portion 920 can reliably prevent the coil portion 215 from being displaced relative to the housing body 71 .

<Eighteenth Embodiment>
In the seventeenth embodiment, the outer peripheral wall of the electric machine and the displacement restricting portion are integrally formed in the housing of the electric machine. On the other hand, in the eighteenth embodiment, the displacement restricting portion is attached to the outer peripheral wall of the electric machine in the housing of the electric machine. Configurations, functions, and effects not specifically described in the eighteenth embodiment are the same as those in the seventeenth embodiment. In the eighteenth embodiment, the points different from the above seventeenth embodiment will be mainly described.

As shown in FIGS. 150 and 151, the motor housing 70 has a post-attachment restricting portion 930 instead of the displacement restricting portion 920 . The retrofit restricting portion 930 is retrofitted to the housing body 71 . The housing main body 71 and the retrofit restricting portion 930 are separate members independent of each other, and are fixed by fasteners such as screws. The retrofit restricting portion 930 is fixed to the housing main body 71 so as not to be relatively displaced with respect to the housing main body 71 . For example, the retrofit restricting portion 930 and the housing body 71 are configured to engage with each other. In this configuration, the engagement portion restricts the relative displacement of the retrofit restricting portion 930 with respect to the housing body 71 .

The thermal conductivity of the retrofit restricting portion 930 is lower than the thermal conductivity of the housing body 71 . For example, the thermal conductivity of the retrofit restricting portion 930 is lower than the thermal conductivity of the housing body 71 . The thermal conductivity of the material forming the retrofit restricting portion 930 is lower than the thermal conductivity of the material forming the housing main body 71 . In addition, the electrical insulation of the retrofit restricting portion 930 is higher than that of the housing main body 71 . For example, the electrical insulating properties of the material forming the retrofit restricting portion 930 are higher than the electrical insulating properties of the material forming the housing main body 71 . In the motor housing 70, the housing main body 71 is made of aluminum, for example, and the post-attachment restricting portion 930 is made of alumina, for example.

The retrofit restricting portion 930 differs from the displacement restricting portion 920 in that it is retrofitted to the housing body 71 , but has the same configuration as the displacement restricting portion 920 in terms of shape and the like. The retrofitting restricting portion 930 has a restricting top portion 931 , a restricting root portion 932 , a retrofitting restricting surface 933 and a restricting end surface 935 . The retrofit restricting surface 933 includes a first restricting surface 933a and a second restricting surface 933b. The restricting top portion 931, restricting root portion 932, retrofit restricting surface 933, and restricting end surface 935 have the same configurations as the restricting top portion 921, restricting root portion 922, displacement restricting surface 923, and restricting end surface 925 of the seventeenth embodiment. there is Also, the first restricting surface 933a and the second restricting surface 933b have the same configuration as the first restricting surface 923a and the second restricting surface 923b of the seventeenth embodiment. The retrofitting restricting portion 930 corresponds to the electrical equipment restricting portion, and the retrofitting restricting surface 933 corresponds to the restricting surface.

According to the present embodiment, the retrofit restricting portion 930 extends radially inward from the housing body 71 so as to enter between two coil portions 215 adjacent in the circumferential direction CD. In this configuration, movement of the coil portion 215 relative to the motor housing 70 in the circumferential direction CD is restricted by the engagement between the coil portion 215 and the retrofit restriction portion 930 . For example, the coil portion 215 and the retrofit restricting portion 930 are hooked to each other via the protective outer peripheral portion 917 . Therefore, the retrofitting restricting portion 930 can prevent the stator 200 from rotating in the circumferential direction CD with respect to the motor housing 70 .

Moreover, the post-attachment restricting portion 930 is arranged at a position close to the coil portion 215 by extending radially inward. With this configuration, the heat of the coil portion 215 is easily transmitted to the retrofitting restriction portion 930 . Therefore, it is possible to realize a configuration in which the heat of the coil portion 215 is easily released to the outside through the motor housing 70 . Therefore, as in the seventeenth embodiment, the heat dissipation effect of the motor device 60 can be enhanced while suppressing the positional deviation of the stator 200 in the motor device 60 .

According to this embodiment, the protective outer peripheral portion 917 is provided in the gap between the coil portion 215 and the retrofitting restricting portion 930 to release the heat from the coil portion 215 to the retrofitting restricting portion 930 . Therefore, the heat transferability from the coil portion 215 to the retrofit restricting portion 930 can be enhanced by the protective outer peripheral portion 917 . Therefore, the heat dissipation effect of the motor housing 70 can be enhanced by the post-attachment restricting portion 930 and the protective outer peripheral portion 917 .

According to this embodiment, the protective outer peripheral portion 917 is in close contact with each of the coil portion 215 and the retrofit restricting portion 930 . In this configuration, both heat transferability from the coil portion 215 to the protective outer peripheral portion 917 and heat transferability from the protective outer peripheral portion 917 to the retrofitting restriction portion 930 can be enhanced. Moreover, in this configuration, the relative displacement of the coil portion 215 with respect to the retrofitting restricting portion 930 can be restricted by the protective outer peripheral portion 917 . Therefore, both the effect of heat radiation from the coil portion 215 to the retrofitting restriction portion 930 and the effect of suppressing the displacement of the coil portion 215 with respect to the retrofitting restriction portion 930 can be enhanced by the protective outer peripheral portion 917 .

According to this embodiment, the retrofitting restricting surface 933 extends so as to overlap the coil outer peripheral surface 913 . With this configuration, the gap between the retrofitting restricting surface 933 and the coil outer peripheral surface 913 can be minimized. Therefore, heat is easily conducted from the coil outer peripheral surface 913 to the retrofitting restricting surface 933 . Therefore, by arranging the retrofitting restriction surface 933 and the coil outer peripheral surface 913 so as to overlap each other, the heat dissipation effect of the motor device 60 can be enhanced.

According to this embodiment, the post-attachment restricting portion 930 extends in the axial direction AD so as to span the pair of coil body end faces 902 . In this configuration, the heat released from the entire coil body 900 in the axial direction AD is easily transferred to the entire retrofit restricting portion 930 . Therefore, the heat release effect of the coil body 900 to the outside through the motor housing 70 can be enhanced by the retrofit restricting portion 930 .

According to this embodiment, the retrofitting restricting portion 930 extends in the axial direction AD so as to bridge the pair of core teeth 901 . In this configuration, the heat released from the pair of core teeth 901 is easily transferred to the retrofitting restriction portion 930 . Therefore, the heat release effect of the core teeth 901 to the outside through the motor housing 70 can be enhanced by the post-installation restricting portion 930 .

According to this embodiment, in the motor housing 70 , the post-attachment restricting portion 930 is fixed to the housing main body 71 by post-attachment. With this configuration, the post-attachment restricting portion 930 can be made of a material different from that of the housing main body 71 . That is, it is possible to increase the degree of freedom in selecting the material forming the retrofitting restricting portion 930 . Therefore, even if the degree of freedom in selecting the material forming the housing main body 71 is limited due to a reason specific to the housing main body 71, the degree of freedom in selecting the material forming the post-attachment restricting portion 930 is limited to the property specific to the housing main body 71. You can avoid being restricted by reason. Therefore, it is possible to further enhance the effect of misalignment of the stator 200 and the heat dissipation effect of the motor device 60 by the characteristics of the material forming the retrofit restricting portion 930 .

According to this embodiment, the electrical insulation of the post-attachment restricting portion 930 is higher than the electrical insulation of the housing body 71 . Therefore, while the housing main body 71 is electrically grounded, the electrical insulation of the stator 200 from the housing main body 71 can be ensured by the post-installation restriction portion 930 .

In the present embodiment, there is concern that the larger the cross-sectional area of the electrically conductive portion of the motor housing 70, the greater the eddy current loss generated in the motor housing 70. FIG. For example, unlike the present embodiment, in a configuration in which both the housing main body 71 and the retrofit restricting portion 930 are conductive, the cross-sectional area of the conductive portion of the motor housing 70 is large, so eddy current loss increases. Cheap. In contrast, according to the present embodiment, the housing main body 71 has electrical conductivity, while the retrofit restricting portion 930 has electrical insulation. Therefore, the cross-sectional area of the electrically conductive portion of the motor housing 70 is reduced by the post-attachment restricting portion 930 . Therefore, eddy current loss generated in the motor housing 70 can be reduced.

<Nineteenth Embodiment>
In the seventeenth embodiment, the motor device 60 has the coil protector 250 . In contrast, in the nineteenth embodiment, the motor device 60 does not have the coil protector 250 . Configurations, functions, and effects not specifically described in the nineteenth embodiment are the same as those in the seventeenth embodiment. In the 19th embodiment, the points different from the above 17th embodiment will be mainly described.

As shown in FIGS. 152 and 153, the motor device 60 has an outer peripheral heat radiation portion 941 instead of the coil protection portion 250. As shown in FIGS. As with the coil protection portion 250, the outer peripheral heat dissipation portion 941 is made of a resin material or the like. The outer peripheral heat radiation part 941 is in a state of entering between the displacement restricting part 920 and the coil body 900, like the protective outer peripheral part 917 of the seventeenth embodiment. The outer peripheral heat radiation portion 941 is provided, for example, in the entire gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 . The outer peripheral heat radiation part 941 is in close contact with the displacement restricting surface 923 and the coil outer peripheral surface 913, and the displacement restricting part 920 and the coil body 900 are fixed. The outer peripheral heat radiating portion 941 corresponds to the gap heat radiating portion.

The outer heat radiation portion 941 extends in the circumferential direction CD along the displacement restricting surface 923 . The outer peripheral heat radiating portion 941 is in a state of being bridged over the plurality of displacement restricting portions 920 . The outer peripheral heat radiating portion 941 extends in the axial direction AD along the displacement restricting surface 923 . As with the displacement restricting portion 920 , the outer peripheral heat radiating portion 941 spans over the pair of coil body end faces 902 . The coil body 900, the displacement restricting portion 920, and the outer peripheral heat radiation portion 941 are arranged in the radial direction RD.

The outer peripheral heat radiation part 941 has thermal conductivity as a part of the coil protection part 250 . The outer heat radiation portion 941 releases heat transmitted from the coil body 900 to the displacement control portion 920 . The outer peripheral heat radiation portion 941 corresponds to a gap heat radiation portion. Moreover, the thickness of the outer peripheral heat radiation portion 941 is substantially uniform both in the circumferential direction CD and in the axial direction AD. The thickness of the outer peripheral heat radiation portion 941 is approximately the same as the size of the gap between the displacement restricting surface 923 and the coil outer peripheral surface 913 in the direction orthogonal to the displacement restricting surface 923, for example. For this reason, the manner in which heat is transmitted from the coil body 900 to the motor housing 70 via the outer peripheral heat radiation portion 941 is easily made uniform in the entire circumferential direction CD. Therefore, it is difficult for the heat radiation effect of the outer peripheral heat radiation portion 941 to vary in the circumferential direction CD.

The outer peripheral heat radiation portion 941 has thermal conductivity, and heat from the coil portion 215 is easily transmitted. The gap heat radiating part has a higher thermal conductivity than, for example, air. The outer peripheral heat radiating portion 941 is formed of, for example, a heat radiating sheet. A heat dissipation sheet is a member having thermal conductivity and formed in a sheet shape. The outer peripheral heat radiation part 941 has electrical insulation.

As shown in FIG. 153, the motor device 60 has a coil support portion 942 . The coil support portion 942 supports the coil body 900 . The coil support 942 is fixed to both the motor housing 70 and the coil body 900 . The coil support portion 942 connects the coil body 900 and the motor housing 70 . The coil supporting portion 942 is provided at a position aligned with the displacement restricting portion 920 in the axial direction AD, and is fixed to the housing body 71 with screws or the like. The coil supporting portion 942 extends radially inward so as to straddle the displacement restricting portion 920 and the coil body 900 in the axial direction AD. The coil support portion 942 is fixed to the coil body 900 with screws or the like. The coil support portion 942 has, for example, a portion that overlaps the core teeth 901 , and is fixed to the coil body 900 by fixing this portion to the core teeth 901 . A plurality of coil support portions 942 are arranged in the circumferential direction CD. In the motor device 60 , at least one coil body 900 is fixed to the motor housing 70 by a coil support portion 942 .

According to the present embodiment, the outer peripheral heat radiation portion 941 is provided in the gap between the coil portion 215 and the displacement restricting portion 920 to release heat from the coil portion 215 to the displacement restricting portion 920 . Therefore, heat transfer from the coil portion 215 to the displacement restricting portion 920 can be enhanced by the outer peripheral heat radiation portion 941 . Therefore, the heat radiation effect of the motor housing 70 can be enhanced by the displacement restricting portion 920 and the outer peripheral heat radiation portion 941 .

<Constituent group L>
<Twentieth Embodiment>
In the first embodiment, the inner tapered surface 316 d and the outer tapered surface 316 e of the magnet unit 316 are each formed of a plurality of magnet pieces 505 . In contrast, in the twentieth embodiment, each of the inner tapered surface 316d and the outer tapered surface 316e is formed by one magnet piece 505. FIG. Configurations, functions, and effects that are not specifically described in the twentieth embodiment are the same as those in the first embodiment. In the twentieth embodiment, differences from the first embodiment will be mainly described.

As shown in FIGS. 154 and 155 , the magnet unit 316 has an inner peripheral end piece 871 and an outer peripheral end piece 872 . The inner peripheral end piece 871 and the outer peripheral end piece 872 are the magnet piece 505 . The inner peripheral end piece 871 and the outer peripheral end piece 872 are included in each of the plurality of magnet pieces 505 of the magnet unit 316 .

The inner peripheral end piece 871 is the magnet piece 505 arranged radially outermost among the plurality of magnet pieces 505 . The inner peripheral end piece 871 corresponds to the outermost member. In the magnet unit 316, only the inner peripheral end piece 871 of the plurality of magnet pieces 505 forms the unit inner peripheral end 316a. That is, only the inner peripheral end piece 871 of the plurality of magnet pieces 505 forms the inner peripheral tapered surface 316d. The inner peripheral tapered surface 316 d is formed by only one magnet piece 505 , the inner peripheral end piece 871 .

The outer peripheral end piece 872 is the magnet piece 505 arranged radially inward most among the plurality of magnet pieces 505 . The outer peripheral end piece 872 corresponds to the outermost member. In the magnet unit 316, only the outer peripheral end piece 872 of the plurality of magnet pieces 505 forms the unit outer peripheral end 316b. That is, only the outer peripheral end piece 872 of the plurality of magnet pieces 505 forms the outer peripheral tapered surface 316e. The outer peripheral tapered surface 316 e is formed by only one magnet piece 505 , which is the outer peripheral end piece 872 .

The thickness dimension of the inner peripheral end piece 871 and the outer peripheral end piece 872 in the radial direction RD is larger than the thickness dimension of the magnet pieces 505 other than these pieces 871 and 872 . The thickness dimension of the inner peripheral end piece 871 in the radial direction RD is equal to or greater than the width dimension of the inner peripheral tapered surface 310d. The thickness dimension of the outer peripheral end piece 872 in the radial direction RD is greater than or equal to the width dimension of the outer peripheral tapered surface 310e.

As shown in FIG. 156 , in the magnet 310 , the inner peripheral end piece 871 and the outer peripheral end piece 872 are hooked on the magnet holder 320 and the fixed block 330 . Of the plurality of magnet pieces 505 , only the outer peripheral end piece 872 is hooked on the outer peripheral engaging portion 322 . The outer peripheral end piece 872 is in contact with the engaging tapered surface 322a. Among the plurality of magnet pieces 505 of the magnet 310 , the magnet pieces 505 other than the outer peripheral end piece 872 are not caught on the outer peripheral engaging portion 322 .

Only the inner peripheral end piece 871 of the plurality of magnet pieces 505 is hooked on the fixed block 330 . The inner peripheral end piece 871 is in contact with the block tapered surface 330a. Of the plurality of magnet pieces 505 possessed by the magnet 310 , the magnet pieces 505 other than the inner peripheral end piece 871 are not caught on the fixed block 330 .

According to this embodiment, of the plurality of magnet pieces 505 of the magnet 310, only the radially innermost inner peripheral end piece 871 forms the inner peripheral tapered surface 310d. In this configuration, the boundary between two adjacent magnet pieces 505 does not exist on the inner peripheral tapered surface 310d. For this reason, there is no step that occurs in the strengthened portions of the two magnet pieces 505 on the inner peripheral tapered surface 310d. Therefore, the inner peripheral tapered surface 310d can be flattened reliably. Thereby, the shape accuracy of the inner peripheral tapered surface 310d can be improved.

According to this embodiment, only the inner peripheral end piece 871 of the plurality of magnet pieces 505 of the magnet 310 is hooked on the fixed block 330 . In this configuration, the inner peripheral tapered surface 310 d formed by the inner peripheral end piece 871 has high shape accuracy, so the positional accuracy between the inner peripheral end piece 871 and the fixed block 330 is high. Therefore, displacement of the magnet 310 with respect to the fixed block 330 can be suppressed. For example, it is possible to prevent the magnet 310 from being displaced from the fixed block 330 and projecting unintentionally toward the axial gap 475 .

According to this embodiment, of the plurality of magnet pieces 505 of the magnet 310, only the outer peripheral end piece 872 provided on the radially outermost side forms the outer peripheral tapered surface 316e. In this configuration, the boundary between two adjacent magnet pieces 505 does not exist on the outer peripheral tapered surface 310e. Therefore, there is no step at the boundary between the two magnet pieces 505 on the outer tapered surface 310e. Therefore, the outer peripheral tapered surface 310e can be reliably flattened. Thereby, the shape accuracy of the outer peripheral tapered surface 310e can be improved.

According to this embodiment, only the outer peripheral end piece 872 of the plurality of magnet pieces 505 of the magnet 310 is hooked on the outer peripheral engaging portion 322 . In this configuration, the positional accuracy between the outer peripheral end piece 872 and the outer peripheral engaging portion 322 is high due to the high shape accuracy of the outer peripheral tapered surface 310 e formed by the outer peripheral end piece 872 . Therefore, it is possible to prevent the magnet 310 from being displaced with respect to the outer peripheral engaging portion 322 . For example, it is possible to prevent the magnet 310 from being displaced from the outer peripheral engaging portion 322 and unintentionally protruding toward the axial gap 475 .

<21st Embodiment>
In the first embodiment, the magnet piece 505 extends in the direction orthogonal to the unit centerline C316. In contrast, in the twenty-first embodiment, the magnet piece 505 extends in the direction orthogonal to the magnet centerline C310. The configuration, action, and effects that are not specifically described in the twenty-first embodiment are the same as those in the first embodiment. In the twenty-first embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 157, the plurality of magnet units 316 includes individual units 875 . In the individual unit 875, the magnet piece 505 extends in a direction orthogonal to the magnet centerline C310. In the parallel magnet 315 of the individual unit 875, the magnet piece 505 extends in a direction perpendicular to both the unit centerline C316 and the magnet centerline C310, as in the first embodiment. In the inclined magnet 314 of the individual unit 875, the magnet piece 505 extends in a direction orthogonal to the magnet centerline C310. In the individual unit 875, the magnet centerline C310 is inclined with respect to the unit centerline C316. Therefore, the magnet pieces 505 of the inclined magnets 314 are inclined with respect to the magnet pieces 505 of the parallel magnets 315 .

In the individual unit 875, the magnet centerline C310 of one of the two tilted magnets 314 is tilted with respect to the magnet centerline C310 of the other. The magnet piece 505 of one of the two tilted magnets 314 is tilted with respect to the magnet piece 505 of the other.

According to this embodiment, in each of the plurality of magnets 310 in the individual unit 875, the magnet piece 505 extends in a direction orthogonal to the magnet centerline C310. In this configuration, the angles of the magnet pieces 505 with respect to the landing centerline are individually set for the plurality of magnets 310 . Therefore, it is possible to increase the degree of freedom regarding the orientation of the plurality of magnets 310 .

<22nd Embodiment>
In the first embodiment described above, the two magnets 310 adjacent to each other across the unit outer boundary 501b are oriented in a direction in which repulsive force is likely to occur. In contrast, in the twenty-second embodiment, the two magnets 310 adjacent to each other across the unit outer boundary 501b are oriented in a direction in which the repulsive force is less likely to occur. Configurations, functions, and effects not specifically described in the twenty-second embodiment are the same as those in the first embodiment. In the twenty-second embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 158, the plurality of magnets 310 that the rotor 300 has include inner magnets 882 and outer magnets 883 . In this embodiment, an inner magnet 882 is provided on the rotor 300 instead of the first inner magnet 312a and the second inner magnet 312b of the first embodiment. Further, an outer magnet 883 is provided on the rotor 300 instead of the first outer magnet 313a and the second outer magnet 313b of the first embodiment. Also in this embodiment, the peripheral magnets 311a and 311b, the inner shaft magnet 882 and the outer shaft magnet 883 are arranged so as to strengthen the magnetic force on the stator 200. FIG. The peripheral magnets 311a and 311b, the inner magnet 882 and the outer magnet 883 are arranged in a Halbach arrangement.

A plurality of inner magnets 882 and outer magnets 883 are arranged in the circumferential direction CD. Two inner magnets 882 and two outer magnets 883 are alternately arranged in the circumferential direction CD. A first peripheral magnet 311 a or a second peripheral magnet 311 b is provided between the inner magnet 882 and the outer magnet 883 .

The inner shaft magnet 882 is oriented so as to face the stator 200 side in the axial direction AD. The inner magnet 882 is oriented parallel to the motor axis Cm. The outer shaft magnet 883 is oriented so as to face the side opposite to the stator 200 in the axial direction AD. Outer magnet 883 is oriented parallel to motor axis Cm. The orientation of the inner magnet 882 and the outer magnet 883 is orthogonal to the orientation of the first circumferential magnet 311a and the second circumferential magnet 311b.

The first orientation unit 319a has an inner magnet 882 and an outer magnet 883 instead of the first inner magnet 312a and the first outer magnet 313a of the first embodiment. In the first orientation unit 319 a , there is a first circumferential magnet 311 a between the inner magnet 882 and the outer magnet 883 . The second orientation unit 319b has an inner magnet 882 and an outer magnet 883 instead of the second inner magnet 312b and the second outer magnet 313b of the first embodiment. In the second orientation unit 319b, between the inner magnet 882 and the outer magnet 883 there is a second circumferential magnet 311b.

The plurality of unit outer boundary portions 501b include boundary portions between the inner magnets 882 of the first orienting unit 319a and the inner magnets 882 of the second orienting unit 319b. In the unit outer boundary portion 501b where the two inner magnets 882 are adjacent to each other, repulsive force is less likely to occur in the two inner magnets 882 . In addition, the plurality of unit outer boundary portions 501b include boundary portions between the outer axis magnets 883 of the first orientation unit 319a and the outer axis magnets 883 of the second orientation unit 319b. In the unit outer boundary portion 501b where the two outer magnets 883 are adjacent to each other, the two outer magnets 883 are less likely to generate a repulsive force.

In this embodiment, regardless of whether the tilt magnet unit 317 is the first orientation unit 319a or the second orientation unit 319b, one of the two tilt magnets 314 included in the tilt magnet unit 317 is the inner magnet 882. , the other is the outer shaft magnet 883 . Similarly, of the parallel magnets 315 on both ends of the parallel magnet unit 318 , one is the inner magnet 882 and the other is the outer magnet 883 .

In the first orienting unit 319 a and the second orienting unit 319 b , the width dimension of the peripheral magnets 311 a and 311 b is smaller than the width dimension of the inner magnet 882 and the width dimension of the outer magnet 883 .

<Twenty-third embodiment>
In the first embodiment, the magnet unit 316 had three magnets 310 . In contrast, the magnet unit 316 has two magnets 310 in the twenty-third embodiment. Configurations, functions and effects not specifically described in the twenty-third embodiment are the same as those in the twenty-second embodiment. In the twenty-third embodiment, the points different from the twenty-second embodiment will be mainly described.

As shown in FIG. 159 , the plurality of magnet units 316 includes tilted magnet units 317 but does not include parallel magnet units 318 . The multiple tilt magnet units 317 have the same shape and size. With this configuration, in the manufacturing process of the rotor 300 , the operator only needs to prepare or manufacture one type of tilt magnet unit 317 , and does not need to prepare or manufacture multiple types of magnet units 316 . Therefore, the cost for preparing or manufacturing the tilt magnet unit 317 can be reduced.

The tilt magnet unit 317 has one tilt magnet 314 and one parallel magnet 315 . The order in which the tilt magnets 314 and the parallel magnets 315 are arranged is the same in the plurality of tilt magnet units 317 . For example, in each of the plurality of tilt magnet units 317, the tilt magnet 314 is arranged on one side in the circumferential direction CD, and the parallel magnet 315 is arranged on the other side. In the circumferential direction CD, one inclined magnet 314 and one parallel magnet 315 are alternately arranged. The plurality of tilted magnets 314 have the same shape and size. The multiple parallel magnets 315 have the same shape and size. With this configuration, in the manufacturing process of the rotor 300, an operator only needs to prepare or manufacture one type of inclined magnet 314 and one type of parallel magnet 315, and a plurality of types of inclined magnets 314 and a plurality of types of parallel magnets are required. 315 need not be prepared or manufactured. Therefore, the cost for preparing or manufacturing the tilted magnets 314 and the parallel magnets 315 can be reduced.

In this embodiment, as in the twenty-second embodiment, two magnets 310 adjacent to each other across the unit outer boundary portion 501b are oriented in a direction in which a repulsive force is less likely to occur. As shown in FIG. 160, the plurality of magnets 310 that the rotor 300 has include inner magnets 882 and outer magnets 883 . In the circumferential direction CD, one inner magnet 882 and one outer magnet 883 are alternately arranged. A first peripheral magnet 311a or a second peripheral magnet 311b is provided between the inner magnet 882 and the outer magnet 883, as in the twenty-second embodiment.

The first orienting unit 319a and the second orienting unit 319b have two magnets 310 each. The first orientation unit 319 a has the first circumferential magnet 311 a and the outer magnet 883 but does not have the inner magnet 882 . The second orientation unit 319b has the second circumferential magnet 311b and the inner magnet 882, but does not have the outer magnet 883.

The plurality of unit outer boundary portions 501b include boundary portions between the outer axis magnet 883 of the first orientation unit 319a and the second circumferential magnet 311b of the second orientation unit 319b. In the unit outer boundary portion 501b where the outer shaft magnet 883 and the second circumferential magnet 311b are adjacent to each other, a repulsive force is less likely to occur. In addition, the plurality of unit outer boundary portions 501b include boundary portions between the first circumferential magnet 311a of the first orientation unit 319a and the inner magnet 882 of the second orientation unit 319b. In the unit outer boundary portion 501b where the first circumferential magnet 311a and the inner magnet 882 are adjacent to each other, repulsive force is less likely to occur.

In the first orientation unit 319 a , the width dimension of the first peripheral magnet 311 a is smaller than the width dimension of the outer magnet 883 . In the second orientation unit 319b, the width dimension 331b is smaller than that of the inner magnet 882. As shown in FIG.

<Constituent group N>
<24th Embodiment>
In the first embodiment, the motor seal holding portion 78 and the rear holding portion 376 press the motor seal portion 402 in the radial direction RD. In contrast, in the twenty-fourth embodiment, the motor seal holding portion 78 and the rear holding portion 376 press the motor seal portion 402 in the axial direction AD. Configurations, functions, and effects not specifically described in the twenty-fourth embodiment are the same as those in the first embodiment. In the twenty-fourth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 161, the motor housing 70 has a motor outer peripheral projection 821. As shown in FIG. In FIG. 161, illustration of the inverter device 80, the unit duct 100, etc. is omitted.

The motor outer peripheral convex portion 821 is a convex portion provided on the motor seal holding portion 78 in the housing body 71 . The motor outer peripheral protrusion 821 protrudes from the housing body 71 toward the rear frame 370 in the axial direction AD. The motor outer peripheral convex portion 821 is provided radially outside the motor seal holding portion 78 . The motor outer peripheral convex portion 821 is provided at a position spaced radially outward from the motor inner peripheral surface 70b. In the housing main body 71, a motor seal holding portion 78 is located between the motor outer peripheral convex portion 821 and the motor inner peripheral surface 70b. The motor outer peripheral convex portion 821 extends in the axial direction AD from the motor outer peripheral surface 70a. The motor outer peripheral convex portion 821 extends annularly in the circumferential direction CD along the motor outer peripheral surface 70a. In this embodiment, the motor outer peripheral convex portion 821 is located radially outside the motor seal holding portion 78, so that the motor peripheral surface 70a is located radially outside the motor seal holding portion 78, as in the first embodiment. .

In this embodiment, the motor outer peripheral protrusion 821 and the housing main body 71 are integrally formed. The motor outer peripheral convex portion 821 is included in the housing main body 71 and forms, for example, an end portion of the housing main body 71 on the inverter device 80 side. The outer surface of the motor outer peripheral protrusion 821 is included in the motor outer peripheral surface 70a. In the motor housing 70 , a cutout portion provided in the housing body 71 forms a motor seal holding portion 78 and a motor outer peripheral convex portion 821 .

Rear frame 370 has a rear inner periphery 822 . Unlike the rear holding portion 376 of the first embodiment, the rear inner peripheral portion 822 is provided at a position aligned with the motor seal holding portion 78 in the axial direction AD. Further, unlike the rear holding portion 376 of the first embodiment, the rear inner circumferential portion 822 does not have the motor-side rear groove 376a.

The rear inner peripheral portion 822 is provided on the rear main body 375 . The rear inner peripheral portion 822 is located near the outer peripheral end of the rear main body 375 . The rear inner peripheral portion 822 extends annularly in the circumferential direction CD along the motor inner peripheral surface 70b. The rear inner peripheral portion 822 protrudes in the axial direction AD from the rear main body 375 toward the motor seal holding portion 78 . The rear inner peripheral portion 822 is provided radially inside the motor outer peripheral convex portion 821 .

The rear inner peripheral portion 822 is aligned in the axial direction AD with the motor seal holding portion 78 via the motor seal portion 402 . The rear inner peripheral portion 822 and the motor seal holding portion 78 are in a state of pressing the motor seal portion 402 in the axial direction AD. The motor seal portion 402 is elastically deformed so as to be crushed in the axial direction AD by the pressing force of the rear inner peripheral portion 822 and the motor seal holding portion 78 . The motor seal portion 402 is in close contact with the rear inner peripheral portion 822 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

The motor outer peripheral convex portion 821 restricts the positional displacement of the motor seal portion 402 to the outside in the radial direction. In addition, the motor outer peripheral convex portion 821 restricts the rear inner peripheral portion 822 from being displaced radially outward. The motor outer peripheral convex portion 821 serves as a positioning portion that determines the position of the rear inner peripheral portion 822 in the radial direction RD.

According to this embodiment, the motor seal holding portion 78 and the rear inner peripheral portion 822 sandwich the motor seal portion 402 in the axial direction AD. Therefore, it is possible to prevent the motor seal portion 402 from protruding from the motor seal holding portion 78 and the rear inner peripheral portion 822 in the axial direction AD. Moreover, the radially outward movement of the motor seal portion 402 is restricted by the motor outer peripheral convex portion 821 . Therefore, it is possible to prevent the motor seal portion 402 from protruding radially outward from the motor seal holding portion 78 and the rear inner peripheral portion 822 .

In this embodiment, the target holding portion such as the rear inner peripheral portion 822 holds the motor seal portion 402 between itself and the motor seal holding portion 78 so as to enter the inside of the motor housing 70 . In this regard, the motor seal holding portion 78 may enter the interior of the rear frame 370 to hold the motor seal portion 402 between the target holding portion such as the rear inner peripheral portion 822 and the like.

<25th Embodiment>
In the twenty-fourth embodiment, the motor housing 70 restricts the radially outward movement of the motor seal portion 402 . In contrast, in the twenty-fifth embodiment, the motor housing 70 restricts the radially inward movement of the motor seal portion 402 . Configurations, functions and effects not specifically described in the twenty-fifth embodiment are the same as those in the first embodiment. In the twenty-fifth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 162, the motor housing 70 has a motor inner circumferential projection 823 . In FIG. 162, illustration of the inverter device 80, the unit duct 100, and the like is omitted.

The motor inner circumferential convex portion 823 is a convex portion provided on the motor seal holding portion 78 in the housing body 71 . The motor inner peripheral protrusion 823 protrudes from the housing body 71 toward the rear frame 370 in the axial direction AD. The motor inner peripheral convex portion 823 is provided radially inside the motor seal holding portion 78 . The motor inner peripheral convex portion 823 is provided at a position spaced radially inward from the motor outer peripheral surface 70a. In the housing main body 71, a motor seal holding portion 78 is located between the motor inner peripheral protrusion 823 and the motor outer peripheral surface 70a. The motor inner peripheral protrusion 823 extends in the axial direction AD from the motor inner peripheral surface 70b. The motor inner peripheral protrusion 823 extends annularly in the circumferential direction CD along the motor inner peripheral surface 70b. In this embodiment, since the motor seal holding portion 78 forms the motor outer peripheral surface 70a, the motor outer peripheral surface 70a is radially outside the motor seal holding portion 78, as in the first embodiment.

In this embodiment, the motor inner peripheral projection 823 and the housing main body 71 are integrally formed. The motor inner peripheral convex portion 823 is included in the housing main body 71 and forms, for example, an end portion of the housing main body 71 on the inverter device 80 side. The outer surface of the motor inner peripheral protrusion 823 is included in the motor inner peripheral surface 70b. In the motor housing 70 , a notch provided in the housing body 71 forms a motor seal holding portion 78 and a motor inner circumference convex portion 823 .

Rear frame 370 has a rear outer perimeter 824 . Like the rear inner peripheral portion 822 of the twenty-fourth embodiment, the rear outer peripheral portion 824 is provided at a position aligned with the motor seal holding portion 78 in the axial direction AD. Further, the rear outer peripheral portion 824 does not have the motor-side rear groove 376a, like the rear holding portion 376 of the twenty-fourth embodiment.

The rear outer peripheral portion 824 is provided on the rear main body 375 . The rear outer peripheral portion 824 is provided at the outer peripheral end of the rear main body 375 and forms the rear outer peripheral surface 370a. Therefore, the rear outer peripheral portion 824 is also the rear exposed portion 377 . The rear outer peripheral portion 824 extends annularly in the circumferential direction CD along the motor outer peripheral surface 70a. The rear outer peripheral portion 824 protrudes in the axial direction AD from the rear main body 375 toward the motor seal holding portion 78 . The rear outer peripheral portion 824 is provided radially outside the motor inner peripheral convex portion 823 .

The rear outer peripheral portion 824 is aligned with the motor seal holding portion 78 in the axial direction AD with the motor seal portion 402 interposed therebetween. The rear outer peripheral portion 824 and the motor seal holding portion 78 are in a state of pressing the motor seal portion 402 in the axial direction AD. The motor seal portion 402 is elastically deformed so as to be crushed in the axial direction AD by the pressing force of the rear outer peripheral portion 824 and the motor seal holding portion 78 . The motor seal portion 402 is in close contact with the rear outer peripheral portion 824 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

In this embodiment, the motor outer peripheral surface 70a and the rear outer peripheral surface 370a are continuously arranged in the axial direction AD with the motor seal portion 402 interposed therebetween. The seal outer peripheral surface of the motor seal portion 402 is flush with the motor outer peripheral surface 70a and the rear outer peripheral surface 370a. The outer peripheral surface of the seal is the radially outer surface of the motor seal portion 402 . The outer peripheral surface of the seal and the outer peripheral surfaces 70a, 370a are aligned in the radial direction RD. The outer peripheral surface of the seal and the outer peripheral surfaces 70a, 370a are arranged continuously in the axial direction AD even if they are slightly deviated in the radial direction RD. In this manner, a stepped surface is prevented from being generated between the motor outer peripheral surface 70a and the seal outer peripheral surface, and a stepped surface is not generated between the rear outer peripheral surface 370a and the seal outer peripheral surface. The configuration in which the motor outer peripheral surface 70 a and the seal outer peripheral surface are aligned in the axial direction AD is included in the configuration in which the motor outer peripheral surface 70 a is provided outside the motor seal portion 402 .

The motor inner peripheral convex portion 823 restricts the positional displacement of the motor seal portion 402 inward in the radial direction. In addition, the motor inner peripheral convex portion 823 restricts the rear outer peripheral portion 824 from being displaced radially inward. The motor inner peripheral convex portion 823 serves as a positioning portion that determines the position of the rear outer peripheral portion 824 in the radial direction RD.

According to this embodiment, the motor seal holding portion 78 and the rear outer peripheral portion 824 sandwich the motor seal portion 402 in the axial direction AD. Therefore, it is possible to prevent the motor seal portion 402 from protruding from the motor seal holding portion 78 and the rear outer peripheral portion 824 in the axial direction AD. In addition, the radially inward movement of the motor seal portion 402 is restricted by the motor inner peripheral convex portion 823 . Therefore, it is possible to prevent the motor seal portion 402 from protruding radially outward from the motor seal holding portion 78 and the rear outer peripheral portion 824 .

In this embodiment, the target holding portion such as the rear outer peripheral portion 824 holds the motor seal portion 402 between itself and the motor seal holding portion 78 so as to enter the inside of the motor housing 70 . In this regard, the motor seal holding portion 78 may enter the interior of the rear frame 370 to hold the motor seal portion 402 between a target holding portion such as the rear outer peripheral portion 824 .

<26th Embodiment>
In the first embodiment, the object to be fixed to the motor housing 70 was the rear frame 370 . In contrast, in the twenty-sixth embodiment, the inverter housing 90 is fixed to the motor housing 70 . Configurations, functions and effects not specifically described in the twenty-sixth embodiment are the same as those in the first embodiment. In the twenty-sixth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 163, motor housing 70 and inverter housing 90 are fixed without interposing rear frame 370 . Specifically, the housing main body 71 of the motor housing 70 and the housing main body 91 of the inverter housing 90 are adjacent to each other in the axial direction AD without the rear frame 370 interposed therebetween. The housing bodies 71 and 91 are in contact with each other at their ends. Inverter device 80 can convert power supplied to motor device 60 and corresponds to a power conversion device. The inverter housing 90 extends in the circumferential direction CD along the motor housing 70 and corresponds to a device housing. The housing body 91 extends in the circumferential direction CD along the housing body 71 of the motor housing 70 . The housing main body 91 may be called an inverter outer peripheral wall.

The motor device unit 50 has an inverter inner periphery holding portion 825 and a housing seal portion 828 . Inverter inner circumference holding portion 825 is included in inverter device 80 . The housing seal portion 828 is an elastically deformable seal member, and is made of a resin material or the like, like the seal portions 402 and 403 of the first embodiment. Housing seal portion 828 is, for example, an O-ring. The housing seal portion 828 has an annular shape and extends along the circumferential direction CD.

Housing seal portion 828 is sandwiched between motor housing 70 and inverter housing 90 . Housing seal portion 828 closes the gap between motor housing 70 and inverter housing 90 . The housing seal portion 828 extends annularly along the motor outer peripheral surface 70a.

The motor seal holding portion 78 and the inverter inner circumference holding portion 825 hold the housing seal portion 828 and restrict the displacement of the housing seal portion 828 . The housing seal portion 828 is sandwiched between the motor seal holding portion 78 and the inverter inner circumference holding portion 825 to close the gap between these holding portions 78 and 825 .

Inverter inner circumference holding portion 825 is included in inverter housing 90 . Inverter inner periphery holding portion 825 is provided in housing main body 91 . The inverter inner circumference holding portion 825 is provided on the inner circumference side of the housing main body 91 . The inverter inner peripheral holding portion 825 protrudes radially inward from the inverter inner peripheral surface 90 b and extends in the axial direction AD from the housing main body 91 toward the motor housing 70 . The inverter inner circumference holding portion 825 is in a state where it spans over the housing main bodies 71 and 91 in the axial direction AD. The inverter inner circumference holding portion 825 is overlapped with the motor inner circumference surface 70b. Inverter inner circumference holding portion 825 corresponds to a target holding portion.

The inverter inner circumference holding portion 825 is provided at a position aligned with the motor seal holding portion 78 in the radial direction RD. The inverter inner circumference holding portion 825 is located radially inside the motor seal holding portion 78 via the housing seal portion 828 . The inverter inner circumference holding portion 825 and the motor seal holding portion 78 are in a state of pressing the housing seal portion 828 in the radial direction RD. The housing seal portion 828 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the inverter inner circumference holding portion 825 and the motor seal holding portion 78 . The housing seal portion 828 is in close contact with the inverter inner circumference holding portion 825 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

The inverter inner circumference holding portion 825 has an inverter inner circumference groove 825a. The inverter inner peripheral groove 825a is a concave portion that is concaved radially inward and is open radially outward. The inverter inner peripheral groove 825a extends in the circumferential direction CD along the motor inner peripheral surface 70b. The inverter inner circumferential groove 825a is provided so as to make a circuit around the inverter inner circumferential holding portion 825 in the circumferential direction CD.

The inverter inner peripheral groove 825a is provided at a position aligned with the motor seal holding portion 78 in the radial direction RD. The inverter inner peripheral groove 825a is a recess into which the housing seal portion 828 can enter. The housing seal portion 828 closes the gap between the motor seal holding portion 78 and the inverter inner circumference holding portion 825 while being inserted into the inverter inner circumference groove 825a. The inverter inner circumference holding portion 825 regulates positional displacement of the housing seal portion 828 with respect to the motor seal holding portion 78 and the inverter inner circumference holding portion 825 . The housing seal portion 828 is in close contact with both the inverter inner periphery holding portion 825 and the motor seal holding portion 78 due to the restoring force accompanying the elastic deformation of the housing seal portion 828 . Specifically, the housing seal portion 828 is in close contact with each of the motor inner peripheral surface 70b and the inner surface of the inverter inner peripheral groove 825a. The inverter inner peripheral groove 825a corresponds to the target concave portion.

In the motor device unit 50, the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are continuously arranged in the axial direction AD. The motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are flush and form the same plane. The motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are aligned in the radial direction RD. The motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are arranged continuously in the axial direction AD even if they are slightly shifted in the radial direction RD. In this manner, no stepped surface is formed at the boundary between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a. The inverter outer peripheral surface 90a corresponds to the target outer peripheral surface.

Power lead-out line 212 has a curved shape so as to avoid inverter inner circumference holding portion 825 in the radial direction. In the power lead-out line 212 , the outer lead-out portion 212 a is aligned with the inverter inner-periphery holding portion 825 in the axial direction AD. Outer circumference lead-out portion 212 a extends in axial direction AD toward inverter inner circumference holding portion 825 . The cross drawn portion 212c is located at a position spaced apart from the inverter inner circumference holding portion 825 toward the first rotor 300a in the radial direction RD. Cross lead portion 212c extends radially inward so as to pass between inverter inner circumference holding portion 825 and first rotor 300a. The crossing lead-out portion 212c protrudes radially inward from the inverter inner circumference holding portion 825. As shown in FIG. The inner circumference lead-out portion 212b is positioned so as to line up with the inverter inner circumference holding portion 825 in the radial direction RD. The inner circumference lead-out portion 212 b is located radially inwardly away from the inverter inner circumference holding portion 825 .

The gas flowing outside the motor device unit 50 includes gas flowing along the outer peripheral surfaces 70a and 90a as the airflow Fb2. The airflow Fb2 passes through the boundary between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a in the axial direction AD. At this boundary, the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a form a continuous surface, so that the airflow Fb2 is less likely to be disturbed.

According to this embodiment, the motor outer peripheral surface 70a is provided so as to be continuously aligned with the inverter outer peripheral surface 90a in the axial direction AD. In this configuration, the airflow Fb2 flowing in the axial direction AD is less likely to be disturbed by passing through the boundary between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a. Furthermore, since the motor outer peripheral surface 70a is provided outside the motor seal holding portion 78 in the radial direction RD, the airflow Fb2 is less likely to be disturbed by passing through the motor seal holding portion 78. FIG. Therefore, it is possible to prevent a decrease in the heat radiation effect of the motor fins 72 due to a decrease in the amount of gas flowing along the motor fins 72 due to turbulence of the airflow Fb2.

According to this embodiment, the housing seal portion 828 enters the inverter inner circumferential groove 825a from the radially outer side. Therefore, the inverter inner peripheral groove 825a can prevent the housing seal portion 828 from being displaced in the axial direction AD.

According to this embodiment, the inverter inner circumference holding portion 825 is provided radially inside the motor inner circumference surface 70b. In this configuration, it is not necessary to project the inverter inner circumference holding portion 825 radially outward from the motor outer circumference surface 70a. Therefore, the inverter outer peripheral surface 90a and the motor outer peripheral surface 70a can be aligned in the axial direction AD so that the inverter outer peripheral surface 90a does not protrude radially outward from the motor outer peripheral surface 70a.

According to this embodiment, the inverter inner circumference holding portion 825 is provided radially inside the motor seal holding portion 78 . In this configuration, like the configuration in which the inverter inner circumference holding portion 825 is provided radially inward of the motor inner circumference surface 70b, it is not necessary to project the inverter inner circumference holding portion 825 radially outward from the motor outer circumference surface 70a. . Therefore, the inverter outer peripheral surface 90a and the motor outer peripheral surface 70a can be arranged so as to be continuous in the axial direction AD so that the inverter outer peripheral surface 90a does not protrude radially outward from the motor outer peripheral surface 70a.

In this embodiment, the motor seal holding portion 78 and the inverter inner circumference holding portion 825 sandwich the housing seal portion 828 in the radial direction RD. Therefore, it is possible to prevent the housing seal portion 828 from protruding from the motor seal holding portion 78 and the inverter inner circumference holding portion 825 in the radial direction RD.

According to this embodiment, the inverter housing 90 is fixed to the motor housing 70 as a fixed object. In this configuration, since the inverter outer peripheral surface 90a and the motor outer peripheral surface 70a are continuously arranged in the axial direction AD, it is possible to suppress the disturbance of the airflow Fb2 at the boundary between the inverter device 80 and the motor device 60.

<27th Embodiment>
In the twenty-sixth embodiment, a portion of the inverter housing 90 protrudes radially inward from the motor inner peripheral surface 70b. In contrast, in the twenty-seventh embodiment, a portion of the motor housing 70 protrudes radially inward from the motor inner peripheral surface 70b. The configurations, functions, and effects not specifically described in the twenty-seventh embodiment are the same as those in the twenty-sixth embodiment. In the twenty-seventh embodiment, the points different from the twenty-sixth embodiment will be mainly described.

As shown in FIG. 164, the motor device unit 50 has a motor inner periphery holding portion 826 instead of the inverter inner periphery holding portion 825 of the twenty-sixth embodiment. Motor inner circumference holding portion 826 is included in motor device 60 . Further, the inverter housing 90 has an inverter seal holding portion 98 as in the first embodiment.

The inverter seal holding portion 98 and the motor inner periphery holding portion 826 hold the housing seal portion 828 and restrict the displacement of the housing seal portion 828 . The housing seal portion 828 is sandwiched between the inverter seal holding portion 98 and the motor inner periphery holding portion 826 to close the gap between these holding portions 98 and 826 . The motor inner periphery holding portion 826 corresponds to a seal holding portion.

Motor inner circumference holding portion 826 is included in motor housing 70 . The motor inner periphery holding portion 826 is provided in the housing main body 71 . The motor inner circumference holding portion 826 is provided on the inner circumference side of the housing main body 71 . The motor inner circumference holding portion 826 protrudes radially inward from the motor inner circumference surface 70 b and extends in the axial direction AD from the housing main body 71 toward the inverter housing 90 . The motor inner circumference holding portion 826 is in a state of being spanned over the housing main bodies 71 and 91 in the axial direction AD. The motor inner circumference holding portion 826 is overlapped with the inverter inner circumference surface 90b.

The motor inner circumference holding portion 826 is provided at a position aligned with the inverter seal holding portion 98 in the radial direction RD. The motor inner circumference holding portion 826 is located radially inside the inverter seal holding portion 98 via the housing seal portion 828 . The motor inner circumference holding portion 826 and the inverter seal holding portion 98 are in a state of pressing the housing seal portion 828 in the radial direction RD. The housing seal portion 828 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the motor inner periphery holding portion 826 and the inverter seal holding portion 98 . The housing seal portion 828 is in close contact with the motor inner periphery holding portion 826 and the inverter seal holding portion 98 due to the restoring force associated with elastic deformation.

The motor inner circumference holding portion 826 has a motor inner circumference groove 826a. The motor inner peripheral groove 826a is a concave portion that is concaved radially inward and is open radially outward. The motor inner peripheral groove 826a extends along the inverter inner peripheral surface 90b in the circumferential direction CD in a groove shape. The motor inner peripheral groove 826a is provided so as to make a round around the motor inner peripheral holding portion 826 in the circumferential direction CD.

The motor inner peripheral groove 826a is provided at a position aligned with the inverter seal holding portion 98 in the radial direction RD. The motor inner peripheral groove 826a is a recess into which the housing seal portion 828 can enter. The housing seal portion 828 closes the gap between the inverter seal holding portion 98 and the motor inner circumference holding portion 826 while being inserted into the motor inner circumference groove 826a. The motor inner circumference holding portion 826 regulates the displacement of the housing seal portion 828 with respect to the inverter seal holding portion 98 and the motor inner circumference holding portion 826 . The housing seal portion 828 is in close contact with both the motor inner periphery holding portion 826 and the inverter seal holding portion 98 due to the restoring force accompanying the elastic deformation of the housing seal portion 828 . Specifically, the housing seal portion 828 is in close contact with each of the inverter inner peripheral surface 90b and the inner surface of the motor inner peripheral groove 826a.

The power lead wire 212 has a curved shape so as to avoid the motor inner periphery holding portion 826 in the radial direction. In the electric power lead-out line 212, the outer circumference lead-out portion 212a is positioned so as to be aligned with the motor inner circumference holding portion 826 in the axial direction AD. The outer circumference drawing portion 212 a extends in the axial direction AD toward the motor inner circumference holding portion 826 . The cross drawn portion 212c is located at a position spaced apart from the motor inner periphery holding portion 826 toward the first rotor 300a in the radial direction RD. The cross drawn portion 212c extends radially inward so as to pass between the motor inner periphery holding portion 826 and the first rotor 300a. The cross drawer portion 212c protrudes radially inward from the motor inner periphery holding portion 826. As shown in FIG. The inner circumference lead-out portion 212b is positioned so as to line up with the motor inner circumference holding portion 826 in the radial direction RD. The inner circumference lead-out portion 212 b is located radially inwardly away from the motor inner circumference holding portion 826 .

According to this embodiment, the motor outer peripheral surface 70 a is provided outside the motor inner peripheral holding portion 826 . In this configuration, the airflow Fb2 flowing in the axial direction AD is less likely to be disturbed by passing through the inverter seal holding portion 98 . Therefore, it is possible to prevent the heat dissipation effect of the motor fins 72 from being reduced by the motor inner periphery holding portion 826 .

According to this embodiment, the housing seal portion 828 enters the motor inner circumferential groove 826a from the radially outer side. Therefore, the housing seal portion 828 can be restricted from being displaced in the axial direction AD by the motor inner circumferential groove 826a.

According to this embodiment, the motor inner circumference holding portion 826 protrudes radially inward from the motor inner circumference surface 70b. In the motor housing 70, by thinning the housing body 71 in the radial direction RD, it is possible to achieve a configuration in which the inverter inner circumference holding portion 825 protrudes radially inward from the motor inner circumferential surface 70b. Therefore, in order to realize a configuration in which the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are continuously arranged in the axial direction AD and the motor outer peripheral surface 70a is radially outside the motor seal holding portion 78, the housing main body 71 can be made thinner.

In this embodiment, the inverter seal holding portion 98 and the motor inner circumference holding portion 826 sandwich the housing seal portion 828 in the radial direction RD. Therefore, it is possible to prevent the housing seal portion 828 from protruding from the inverter seal holding portion 98 and the motor inner circumference holding portion 826 in the radial direction RD.

<28th Embodiment>
In the twenty-sixth embodiment, the inverter housing 90 is fixed to the motor housing 70 . On the other hand, in the twenty-eighth embodiment, the fixed object fixed to the motor housing 70 is the motor housing of another motor device. Configurations, functions and effects not specifically described in the twenty-eighth embodiment are the same as those in the twenty-sixth embodiment. In the twenty-eighth embodiment, the points different from the twenty-sixth embodiment will be mainly described.

As shown in FIG. 165, the motor device unit 50 has a second motor device 830 as another motor device. Second motor device 830 corresponds to another rotating electric machine. The second motor device 830 has a configuration similar to that of the motor device 60 . For example, the second motor device 830 has a second motor 831 and a second motor housing 832 . The second motor 831 has a rotor, a stator, etc., like the motor 61 . The second motor 831 is, for example, an axial gap type and double rotor type rotary electric machine. A second motor 831 is housed in a second motor housing 832 . The second motor housing 832 corresponds to the housing.

The second motor housing 832 has a second housing body 833 and second motor fins 834 . The second housing body 833 and the second motor fins 834 have the same configuration as the housing body 71 and the motor fins 72 . The second housing body 833 forms a second motor outer peripheral surface 832 a and a second motor inner peripheral surface 832 b of the second motor housing 832 . The second motor fins 834 are provided on the second motor outer peripheral surface 832a.

In this embodiment, the housing seal portion 828 is sandwiched between the motor housing 70 and the second motor housing 832 . The housing seal portion 828 closes the gap between the motor housing 70 and the second motor housing 832 . The housing seal portion 828 extends annularly along the second motor outer peripheral surface 832a.

The second motor housing 832 has a second inner peripheral holding portion 835 . The motor seal holding portion 78 and the second inner periphery holding portion 835 hold the housing seal portion 828 and restrict the displacement of the housing seal portion 828 . The housing seal portion 828 is sandwiched between the motor seal holding portion 78 and the second inner periphery holding portion 835 to close the gap between these holding portions 78 and 835 .

The second inner peripheral holding portion 835 is included in the second motor housing 832 . The second inner periphery holding portion 835 is provided on the second housing main body 833 . The second inner circumference holding portion 835 is provided on the inner circumference side of the second housing main body 833 . The second inner peripheral holding portion 835 protrudes radially inward from the second motor inner peripheral surface 832 b and extends in the axial direction AD from the second housing main body 833 toward the motor housing 70 . The second inner peripheral holding portion 835 is in a state of being spanned over the housing main bodies 71 and 833 in the axial direction AD. The second inner peripheral holding portion 835 overlaps the motor inner peripheral surface 70b. The second inner periphery holding portion 835 corresponds to a target holding portion.

The second inner peripheral holding portion 835 is provided at a position aligned with the motor seal holding portion 78 in the radial direction RD. The second inner peripheral holding portion 835 is radially inside the motor seal holding portion 78 with the housing seal portion 828 interposed therebetween. The second inner periphery holding portion 835 and the motor seal holding portion 78 press the housing seal portion 828 in the radial direction RD. The housing seal portion 828 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the second inner peripheral holding portion 835 and the motor seal holding portion 78 . The housing seal portion 828 is in close contact with the second inner peripheral holding portion 835 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

The second inner peripheral holding portion 835 has a second inner peripheral groove 835a. The second inner peripheral groove 835a is a concave portion that is recessed radially inward and is open radially outward. The second inner peripheral groove 835a extends in the circumferential direction CD along the motor inner peripheral surface 70b. The second inner peripheral groove 835a is provided so as to make a round around the second inner peripheral holding portion 835 in the circumferential direction CD.

The second inner peripheral groove 835a is provided at a position aligned in the radial direction RD in the motor seal holding portion 78. As shown in FIG. The second inner peripheral groove 835a is a recess into which the housing seal portion 828 can enter. The housing seal portion 828 closes the gap between the motor seal holding portion 78 and the second inner circumference holding portion 835 while being inserted inside the second inner circumference groove 835a. The second inner circumference holding portion 835 regulates the displacement of the housing seal portion 828 with respect to the motor seal holding portion 78 and the second inner circumference holding portion 835 . The housing seal portion 828 is in close contact with both the second inner peripheral holding portion 835 and the motor seal holding portion 78 due to the restoring force accompanying the elastic deformation of the housing seal portion 828 . Specifically, the housing seal portion 828 is in close contact with the motor inner peripheral surface 70b and the inner surface of the second inner peripheral groove 835a. The second inner peripheral groove 835a corresponds to the target concave portion.

In the motor device unit 50, the motor outer peripheral surface 70a and the second motor outer peripheral surface 832a are continuously arranged in the axial direction AD. The motor outer peripheral surface 70a and the second motor outer peripheral surface 832a are flush with each other and form the same plane. The motor outer peripheral surface 70a and the second motor outer peripheral surface 832a are aligned in the radial direction RD. The motor outer peripheral surface 70a and the second motor outer peripheral surface 832a are arranged continuously in the axial direction AD even if they are slightly deviated in the radial direction RD. In this manner, no stepped surface is formed at the boundary between the motor outer peripheral surface 70a and the second motor outer peripheral surface 832a. The second motor outer peripheral surface 832a corresponds to the target outer peripheral surface.

The power lead wire 212 has a curved shape so as to avoid the second inner periphery holding portion 835 in the radial direction. In the power lead-out line 212 , the outer lead-out portion 212 a is aligned with the second inner-peripheral holding portion 835 in the axial direction AD. The outer circumference lead-out portion 212 a extends in the axial direction AD toward the second inner circumference holding portion 835 . The cross drawn portion 212c is located apart from the second inner periphery holding portion 835 toward the first rotor 300a in the radial direction RD. The cross drawn portion 212c extends radially inward so as to pass between the second inner periphery holding portion 835 and the first rotor 300a. The cross drawn portion 212c protrudes radially inward from the second inner peripheral holding portion 835. As shown in FIG. The inner circumference lead-out portion 212b is positioned so as to line up with the second inner circumference holding portion 835 in the radial direction RD. The inner circumference lead-out portion 212 b is located radially inwardly away from the second inner circumference holding portion 835 .

The gas flowing outside the motor device unit 50 includes gas flowing along the outer peripheral surfaces 70a and 832a as the airflow Fb3. The airflow Fb3 passes through the boundary between the motor outer peripheral surface 70a and the second motor outer peripheral surface 832a in the axial direction AD. At this boundary, the motor outer peripheral surface 70a and the second motor outer peripheral surface 832a form a continuous surface, so that the airflow Fb3 is less likely to be disturbed.

According to this embodiment, the motor outer peripheral surface 70a is provided so as to be continuously aligned with the second motor outer peripheral surface 832a in the axial direction AD. In this configuration, the airflow Fb3 flowing in the axial direction AD is less likely to be disturbed by passing through the boundary between the motor outer peripheral surface 70a and the second motor outer peripheral surface 832a. Furthermore, since the motor outer peripheral surface 70a is provided outside the motor seal holding portion 78 in the radial direction RD, the airflow Fb3 is less likely to be disturbed by passing through the motor seal holding portion 78. FIG. Therefore, it is possible to prevent the heat radiation effect of the motor fins 72 from being reduced due to, for example, a decrease in the amount of gas flowing along the motor fins 72 due to the turbulence of the airflow Fb3.

According to this embodiment, the housing seal portion 828 enters the second inner circumferential groove 835a from the radially outer side. Therefore, the second inner peripheral groove 835a can restrict the displacement of the housing seal portion 828 in the axial direction AD.

According to this embodiment, the second inner peripheral holding portion 835 is provided radially inward of the motor inner peripheral surface 70b. With this configuration, it is not necessary to project the second inner circumference holding portion 835 radially outward from the motor outer circumference surface 70a. Therefore, the second motor outer peripheral surface 832a and the motor outer peripheral surface 70a can be aligned in the axial direction AD so that the second motor outer peripheral surface 832a does not protrude radially outward from the motor outer peripheral surface 70a.

According to this embodiment, the second inner peripheral holding portion 835 is provided radially inside the motor seal holding portion 78 . In this configuration, similarly to the configuration in which the second inner periphery holding portion 835 is provided radially inward of the motor inner peripheral surface 70b, it is necessary to project the second inner periphery holding portion 835 radially outward from the motor outer peripheral surface 70a. There is no Therefore, the second motor outer peripheral surface 832a and the motor outer peripheral surface 70a can be arranged so as to be continuous in the axial direction AD so that the second motor outer peripheral surface 832a does not protrude radially outward from the motor outer peripheral surface 70a.

In this embodiment, the motor seal holding portion 78 and the second inner periphery holding portion 835 sandwich the housing seal portion 828 in the radial direction RD. Therefore, it is possible to prevent the housing seal portion 828 from protruding from the motor seal holding portion 78 and the second inner circumference holding portion 835 in the radial direction RD.

According to this embodiment, the second motor housing 832 is fixed to the motor housing 70 as a fixed object. In this configuration, since the second motor outer peripheral surface 832a and the motor outer peripheral surface 70a are continuously arranged in the axial direction AD, the airflow Fb3 is disturbed at the boundary between the second motor device 830 and the motor device 60. can be suppressed.

<29th Embodiment>
In the twenty-ninth embodiment, the motor device 60 has a blower device. Configurations, functions and effects not specifically described in the twenty-ninth embodiment are the same as those in the first embodiment. In the twenty-ninth embodiment, the points different from the first embodiment will be mainly described.

As shown in FIG. 166, motor device 60 has blower fan 840 . The blower fan 840 is arranged in the motor housing 70 in the axial direction AD. The blower fan 840 blows air so that gas flows in the axial direction AD along the motor outer peripheral surface 70a. The blower fan 840 is provided, for example, on the side opposite to the inverter device 80 via the motor device 60 in the axial direction AD. Blower fan 840 blows air such that, for example, airflow Fa4 flows from inverter outer peripheral surface 90a toward motor outer peripheral surface 70a. Blower fan 840 can cool motor device 60 from the outer peripheral side by blowing air. Blower fan 840 corresponds to the blower.

Blower fan 840 blows air by rotating. Blower fan 840 is driven to rotate by motor device 60 . Blower fan 840 is attached to shaft 340 and rotates with shaft 340 . Blower fan 840 cools motor device 60 as motor device 60 is driven. Blower fan 840 is housed in unit duct 100 . In unit duct 100 , airflow Fa<b>4 flows through duct flow path 105 by blowing air from blower fan 840 .

According to this embodiment, the blowing fan 840 blows the airflow Fa4 along the motor outer peripheral surface 70a in the axial direction AD. Therefore, the amount of gas that flows along the motor fins 72 and the motor outer peripheral surface 70a as the airflow Fa4 tends to increase. Therefore, the blower fan 840 can enhance the heat dissipation effect of the motor fins 72 and the motor outer peripheral surface 70a.

<Thirtieth Embodiment>
In the twenty-seventh embodiment, the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a are continuously arranged in the axial direction AD. In contrast, in the thirtieth embodiment, the motor outer peripheral surface 70a is provided radially inward of the inverter outer peripheral surface 90a. Configurations, functions and effects not specifically described in the thirtieth embodiment are the same as those in the twenty-seventh embodiment. In the thirtieth embodiment, the points different from the twenty-seventh embodiment will be mainly described.

As shown in FIG. 167, the motor housing 70 is inserted radially inward of the inverter housing 90 . The inverter housing 90 has an inverter step surface 846 . The inverter step surface 846 is formed by the end surface of the inverter housing 90 on the motor device 60 side. The inverter step surface 846 extends in a direction perpendicular to the axial direction AD. The inverter step surface 846 spans the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a in the radial direction RD. The inverter step surface 846 faces the motor outer peripheral surface 70a side in the axial direction AD. The inverter step surface 846 is provided at the boundary between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a in the axial direction AD.

The motor housing 70 has a motor overlap retainer 845 . The inverter housing 90 has an inverter seal holding portion 98 as in the twenty-seventh embodiment. The motor overlap holding portion 845 and the inverter seal holding portion 98 hold the housing seal portion 828 and restrict the displacement of the housing seal portion 828 . The housing seal portion 828 is sandwiched between the motor overlap holding portion 845 and the inverter seal holding portion 98 to close the gap between these holding portions 845 and 98 . The motor overlap holding portion 845 corresponds to a seal holding portion.

A motor overlap retainer 845 is included in the motor housing 70 . The motor overlap holding portion 845 is provided on the housing body 71 . In this embodiment, the motor overlap holding portion 845 and the housing body 71 are integrally formed. The motor overlap holding portion 845 is included in the housing main body 71 and forms, for example, an end portion of the housing main body 71 on the inverter device 80 side. Further, the outer and inner peripheral surfaces of the motor overlapping holding portion 845 are included in the motor outer peripheral surface 70a and the motor inner peripheral surface 70b. The motor overlap holding portion 845 is overlapped with the inverter inner peripheral surface 90b.

The motor overlapping holding portion 845 is provided at a position aligned with the inverter seal holding portion 98 in the radial direction RD. The motor overlap holding portion 845 is radially inside the inverter seal holding portion 98 via the housing seal portion 828 . The motor overlap holding portion 845 and the inverter seal holding portion 98 press the housing seal portion 828 in the radial direction RD. The housing seal portion 828 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the motor overlapping holding portion 845 and the inverter seal holding portion 98 . The housing seal portion 828 is in close contact with the motor overlapping holding portion 845 and the inverter seal holding portion 98 due to the restoring force associated with elastic deformation.

The motor overlap holding portion 845 has a motor overlap groove 845a. The motor overlap groove 845a is a concave portion that is recessed radially inward and is open radially outward. The motor overlap groove 845a extends in the circumferential direction CD along the inverter inner peripheral surface 90b. The motor duplication groove 845a is provided so as to circle around the motor duplication holding portion 845 in the circumferential direction CD.

The motor overlap groove 845a is provided at a position aligned in the radial direction RD in the inverter seal holding portion 98. As shown in FIG. The motor overlap groove 845a is a recess into which the housing seal portion 828 can enter. The housing seal portion 828 closes the gap between the inverter seal holding portion 98 and the motor overlap holding portion 845 while being inserted into the motor overlap groove 845a. The motor overlap holding portion 845 regulates positional displacement of the housing seal portion 828 with respect to the inverter seal holding portion 98 and the motor overlap holding portion 845 . The housing seal portion 828 is in close contact with both the motor overlap holding portion 845 and the inverter seal holding portion 98 due to the restoring force accompanying the elastic deformation of the housing seal portion 828 . Specifically, the housing seal portion 828 is in close contact with each of the inverter inner peripheral surface 90b and the inner surface of the motor overlapping groove 845a.

In this embodiment, gas flows in the axial direction AD from the inverter outer peripheral surface 90a toward the motor outer peripheral surface 70a. For example, a blower device such as a blower fan 840 is provided to drive gas to flow from the inverter outer peripheral surface 90a toward the motor outer peripheral surface 70a. The flow of gas from inverter outer peripheral surface 90a toward motor outer peripheral surface 70a includes airflow Fb4. Airflow Fb4 flowing along inverter outer peripheral surface 90a crosses inverter stepped surface 846 and reaches motor outer peripheral surface 70a. For the airflow Fb4, the inverter step surface 846 faces the downstream side. The direction of inverter step surface 846 is set so as not to hinder the flow of airflow Fb4.

According to this embodiment, the motor outer peripheral surface 70a is provided so as to be spaced radially inward from the inverter outer peripheral surface 90a. With this configuration, it is possible to prevent the airflow Fb4 flowing in the axial direction AD from the inverter outer peripheral surface 90a toward the motor outer peripheral surface 70a from hitting the inverter stepped surface 846. FIG. Therefore, even if the inverter stepped surface 846 exists between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a, the inverter stepped surface 846 is unlikely to disturb the airflow Fb4. Therefore, the heat dissipation effect of the motor device 60 can be enhanced depending on the orientation of the inverter step surface 846 .

<31st Embodiment>
In the thirtieth embodiment, the motor outer peripheral surface 70a is provided radially inward of the inverter outer peripheral surface 90a. In contrast, in the thirty-first embodiment, the inverter outer peripheral surface 90a is provided radially inward of the motor outer peripheral surface 70a. The configurations, actions, and effects not specifically described in the thirty-first embodiment are the same as those in the thirtieth embodiment. In the thirty-first embodiment, the points different from the above-described thirtieth embodiment will be mainly described.

As shown in FIG. 168, the inverter housing 90 is in a state of being radially inside the motor housing 70 . The motor housing 70 has a motor step surface 848 . The motor step surface 848 is formed by the end surface of the motor housing 70 on the inverter device 80 side. The motor step surface 848 extends in a direction perpendicular to the axial direction AD. The motor step surface 848 spans the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a in the radial direction RD. The motor step surface 848 faces the inverter outer peripheral surface 90a side in the axial direction AD. The motor stepped surface 848 is provided at the boundary between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a in the axial direction AD.

The motor housing 70 has an inverter overlap holder 847 . The inverter housing 90 has a motor seal holding portion 78 as in the twenty-sixth embodiment. The inverter overlap holding portion 847 and the motor seal holding portion 78 hold the housing seal portion 828 and restrict the displacement of the housing seal portion 828 . The housing seal portion 828 is sandwiched between the inverter overlapping holding portion 847 and the motor seal holding portion 78 to close the gap between these holding portions 847 and 78 . The inverter overlap holding portion 847 corresponds to a seal holding portion.

Inverter overlap retainer 847 is included in motor housing 70 . The inverter overlap holding portion 847 is provided on the housing body 91 . In this embodiment, the inverter overlapping holding portion 847 and the housing main body 91 are integrally formed. The inverter overlapping holding portion 847 is included in the housing main body 91 and forms, for example, an end portion of the housing main body 91 on the motor device 60 side. Further, the outer and inner peripheral surfaces of the inverter overlapping holding portion 847 are included in the inverter outer peripheral surface 90a and the inverter inner peripheral surface 90b. The inverter overlapping holding portion 847 is overlapped with the motor inner peripheral surface 70b.

The inverter overlapping holding portion 847 is provided at a position aligned with the motor seal holding portion 78 in the radial direction RD. The inverter overlapping holding portion 847 is located radially inside the motor seal holding portion 78 via the housing seal portion 828 . The inverter overlapping holding portion 847 and the motor seal holding portion 78 press the housing seal portion 828 in the radial direction RD. The housing seal portion 828 is elastically deformed so as to be crushed in the radial direction RD by the pressing force of the inverter overlapping holding portion 847 and the motor seal holding portion 78 . The housing seal portion 828 is in close contact with the inverter overlapping holding portion 847 and the motor seal holding portion 78 due to the restoring force associated with elastic deformation.

The inverter overlap holding portion 847 has an inverter overlap groove 847a. The inverter overlapping groove 847a is a concave portion that is recessed radially inward and is open radially outward. The inverter overlapping groove 847a extends like a groove in the circumferential direction CD along the motor inner peripheral surface 70b. The inverter overlap groove 847a is provided so as to circle around the inverter overlap holding portion 847 in the circumferential direction CD.

The inverter overlap groove 847a is provided at a position aligned in the radial direction RD in the motor seal holding portion 78. As shown in FIG. The inverter overlap groove 847a is a recess into which the housing seal portion 828 can enter. The housing seal portion 828 closes the gap between the motor seal holding portion 78 and the inverter overlapping holding portion 847 while being inserted into the inverter overlapping groove 847a. The inverter overlapping holding portion 847 restricts positional displacement of the housing seal portion 828 with respect to the motor seal holding portion 78 and the inverter overlapping holding portion 847 . The housing seal portion 828 is in close contact with both the inverter overlapping holding portion 847 and the motor seal holding portion 78 due to the restoring force accompanying the elastic deformation of the housing seal portion 828 . Specifically, the housing seal portion 828 is in close contact with the motor inner peripheral surface 70b and the inner surface of the inverter overlapping groove 847a.

In this embodiment, gas flows in the axial direction AD from the motor outer peripheral surface 70a toward the inverter outer peripheral surface 90a. For example, a blower device such as a blower fan 840 is provided to drive gas to flow from the motor outer peripheral surface 70a toward the inverter outer peripheral surface 90a. The gas flow from the motor outer peripheral surface 70a toward the inverter outer peripheral surface 90a includes the airflow Fb5. The airflow Fb5 flowing along the motor outer peripheral surface 70a passes over the motor stepped surface 848 and reaches the inverter outer peripheral surface 90a side. The motor step surface 848 faces the downstream side for the airflow Fb5. The direction of the motor step surface 848 is set so as not to hinder the flow of the airflow Fb5.

According to this embodiment, the motor outer peripheral surface 70a is provided so as to be spaced radially outward from the inverter outer peripheral surface 90a. With this configuration, it is possible to prevent the airflow Fb5 flowing in the axial direction AD from the motor outer peripheral surface 70 a toward the inverter outer peripheral surface 90 a from hitting the motor stepped surface 848 . Therefore, even if the motor stepped surface 848 exists between the motor outer peripheral surface 70a and the inverter outer peripheral surface 90a, the motor stepped surface 848 hardly disturbs the airflow Fb5. Therefore, the heat dissipation effect of the motor device 60 can be enhanced by adjusting the orientation of the motor step surface 848 .

<Other embodiments>
The disclosure in this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations thereon by those skilled in the art. For example, the disclosure is not limited to the combination of parts and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure can have additional parts that can be added to the embodiments. The disclosure encompasses abbreviations of parts and elements of the embodiments. The disclosure encompasses the permutations, or combinations of parts, elements between one embodiment and another. The disclosed technical scope is not limited to the description of the embodiments. The disclosed technical scope is indicated by the description of the claims, and should be understood to include all changes within the meaning and range of equivalents to the description of the claims.

<Construction group A>
In each of the embodiments described above, the busbar unit 260 and the neutral point busbar 290 may be separated in at least one of the axial direction AD, the radial direction RD, and the circumferential direction CD. Also, the power busbar 261 does not have to be protected by the busbar protection unit 270 . Even in this configuration, if the neutral point bus bar 290 is provided in the stator side space S1 and the power bus bar 261 is provided in the inverter side space S2, the insulation reliability between the power bus bar 261 and the neutral point bus bar 290 is lowered. It's getting harder. Also, one of the power bus bar 261 and the neutral point bus bar 290 may be provided in the stator-side space S1, and the other should be provided in the inverter-side space S2.

<Construction group B>
In each of the above embodiments, the pair of inner magnets 312a and 312b may be oriented so as to face opposite sides in the circumferential direction CD as long as they are oriented so as to be inclined with respect to the motor axis Cm. The pair of outer shaft magnets 313a and 313b may be oriented so as to face each other in the circumferential direction CD as long as they are oriented so as to be inclined with respect to the motor axis Cm. The pair of inner magnets 312a, 312b and the pair of outer magnets 313a, 313b may be inclined in the radial direction RD with respect to the motor axis Cm.

<Constituent group C>
In each of the embodiments described above, the coil portion 215 may be arranged in the motor housing 70 regardless of the position of the stator holding portion 171 . For example, the coil portion 215 may be provided at a position displaced from the shaft holding portion 174 in the circumferential direction CD. Further, in the motor housing 70, the stator holding portion 171 may not be provided on the inner peripheral surface 70b as long as the coil protection portion 250 is in contact with the inner peripheral surface 70b.

<Constituent group D>
In each of the embodiments described above, the motor device 60 and the inverter device 80 may share a housing. For example, motor 61 and inverter 81 may be housed in one housing. Moreover, in the unit housing 51, it is sufficient that either one of the motor fins 72 and the inverter fins 92 is provided. In the unit housing 51, the coil protection portion 250 may be provided at a position spaced apart from the inner peripheral surface 70b.

<Constructive group E>
In each of the above-described embodiments, the outer grommet portion 258 only needs to extend toward the power bus bar 261 side in the axial direction AD from the outer circumference drawing portion 212a. For example, in the above-described first embodiment, the outer grommet portion 258 may extend toward the power bus bar 261 side from the inner peripheral bent portion 212e in the axial direction AD. In addition, the outer grommet portion 258 does not have to extend toward the power bus bar 261 from the outer bent portion 212d in the axial direction AD. That is, the outer grommet portion 258 does not have to reach the cross drawn portion 212c in the axial direction AD.

In each of the above-described embodiments, the intersecting lead portion 212c may extend in the radial direction RD or may extend in the circumferential direction CD as long as it intersects the outer peripheral lead portion 212a.

In each of the above-described embodiments, the outer insulating portion such as the outer grommet portion 258 does not have to be fixed to the motor inner peripheral surface 70b as long as it enters between the outer peripheral lead-out portion 212a and the motor inner peripheral surface 70b. For example, the outer insulating portion may be provided at a position spaced radially inward from the motor inner peripheral surface 70b. Further, the outer insulating portion may be provided at a position radially outwardly spaced from the outer peripheral lead portion 212a. Modified examples of the positions relative to the motor inner peripheral surface 70b and the outer peripheral drawn-out portion 212a are applied to the drawn-out insulating portion and the outer protective portion as well as the outer insulating portion.

<Constituent group F>
In each of the above-described embodiments, the holder rib 323 may be provided at any position with respect to the magnet 310 as long as at least a portion of the holder rib 323 is aligned with the magnet 310 in the axial direction AD. For example, the holder ribs 323 may extend further than the magnets 310 toward at least one of the radially inner side and the radially outer side. Moreover, the holder ribs 323 do not have to extend beyond the magnets 310 on both the radially inner side and the radially outer side. Furthermore, the magnets 310 may extend further than the holder ribs 323 toward at least one of the radially inner side and the radially outer side.

In each of the above embodiments, the holder rib 323 may have any shape as long as it can send air toward the power lead-out line 212 . The holder rib 323 may have a shape capable of sending air in at least one of the radial direction RD and the axial direction AD. For example, in the holder rib 323, the rib taper portion 323d does not have to be longer than the rib parallel portion 323c in the radial direction RD. Further, the holder ribs 323 may gradually become thinner or thicker from the holder main body 321 toward the distal end portion in the axial direction AD. For example, the width dimension of the holder rib 323 in the circumferential direction CD may gradually decrease toward the parallel rib portion 323c.

Also, the plurality of holder ribs 323 may not extend radially around the motor axis Cm. For example, the holder rib 323 may extend radially inward from the holder outer peripheral end 320b toward a position shifted in the radial direction RD from the motor axis Cm. At least one holder rib 323 may be included in rotor 300 .

In each of the above embodiments, the holder rib 323 may be provided at any position with respect to the holder main body 321 as long as air can be sent toward the power lead-out line 212 . The holder rib 323 may be provided at a position spaced apart in the radial direction RD from at least one of the holder inner peripheral end 320a and the holder outer peripheral end 320b. For example, the holder rib 323 is provided at a position spaced radially inward from the holder outer peripheral end 320b. The holder rib 323 may protrude in the radial direction RD from at least one of the holder inner peripheral end 320a and the holder outer peripheral end 320b. For example, the holder rib 323 is configured to protrude radially outward from the holder outer peripheral end 320b. A plurality of holder ribs 323 may be arranged in the radial direction RD.

In each of the above embodiments, the first rotor 300a may have any shape as long as the holder ribs 323 can generate cooling air. For example, the first rotor 300a may be shaped like a centrifugal fan, a sirocco fan, or an axial fan.

<Constituent group G>
In each of the embodiments described above, the magnet unit 316 only needs to have at least one magnet 310 . For example, in a configuration in which the magnet unit 316 has only one magnet 310 , one magnet 310 corresponds to the magnet unit 316 .

In each of the above embodiments, the magnet fixture 335 may have any configuration as long as it fixes the fixing block 330 to the magnet holder 320 . For example, magnet retainer 335 may be threaded through block hole 333 into magnet holder 320 . In this case, it is preferable that the fixed head 337 does not protrude from the fixed block 330 toward the axial gap 475 .

In each of the above embodiments, the fixing block 330 may have any shape as long as it is hooked on the inner peripheral tapered surface 316d. For example, the fixed block 330 may not have the block tapered surface 330a. Even in this configuration, a part of the fixed block 330 may be hooked on the inner peripheral tapered surface 316d.

In each of the embodiments described above, the fixing block 330 may be provided radially outside the magnet unit 316 . That is, the fixing block 330 may be provided on at least one of the radially outer side and the radially inner side of the magnet unit 316 . Also, a plurality of fixing blocks 330 may be provided for one magnet unit 316 . In other words, one magnet unit 316 may be fixed to the magnet holder 320 by multiple fixing blocks 330 .

In each of the above embodiments, the configuration for fixing the fixing block 330 to the magnet holder 320 may be any. For example, the fixed shaft portion 336 may be provided integrally with the fixed block 330 . In this configuration, the fixing block 330 can be directly fixed to the magnet holder 320 by, for example, screwing the fixing shaft portion 336 into the block hole 329 . Moreover, the fixed block 330 and the magnet holder 320 may be fixed by a connector such as a snap fit.

In the above embodiment, the magnet unit 316 and the outer peripheral engaging portion 322 may have any shape as long as the magnet unit 316 is hooked on the outer peripheral engaging portion 322 . For example, if the magnet unit 316 is hooked on the engaging tapered surface 322a, the magnet unit 316 may not have the outer tapered surface 316e. In this configuration, it is sufficient that a portion of the magnet unit 316 is hooked on the outer peripheral tapered surface 316e. Further, if the outer peripheral tapered surface 316e is hooked on the outer peripheral engaging portion 322, the outer peripheral engaging portion 322 does not have to have the engaging tapered surface 322a. In this configuration, it is sufficient that the outer peripheral tapered surface 316 e is caught on a part of the outer peripheral engaging portion 322 .

In each of the above embodiments, the fixing block 330 and the holder receiving portion 328 may have any shape as long as the fixing block 330 is received by the holder receiving portion 328 . For example, if the block receiving surface 330b is received by the holder receiving portion 328, the holder receiving portion 328 may not have the holder receiving surface 328a. In this configuration, it is sufficient that the block receiving surface 330b is received by a portion of the holder receiving portion 328. FIG. Further, if the fixing block 330 is received by the holder receiving surface 328a, the fixing block 330 may not have the block receiving surface 330b. In this configuration, it is sufficient that a portion of the fixed block 330 is received by the holder receiving surface 328a.

In each of the above embodiments, as long as there is an axial gap 475 between the rotor first surface 301 and the stator 200, the rotor first surface 301 may have any shape. For example, at least one of the outer circumference engaging portion 322 , the fixing block 330 , the magnet fixture 335 and the holder receiving portion 328 may protrude more or less toward the axial gap 475 than the magnet unit 316 .

In each of the embodiments described above, the positioning portion such as the magnet projection 483 may have any configuration as long as it can determine the position of the magnet unit 316 in the circumferential direction CD. For example, the magnet unit 316 may be configured such that a concave portion is provided in the second unit surface 316h or the like, and the magnet projection 483 is caught in this concave portion. Also, the magnet protrusion 483 may be provided on at least one of the holder main body 321 , the outer peripheral engaging portion 322 and the holder receiving portion 328 . Also, the magnet projection 483 may be provided on the fixed block 330 .

In each of the above embodiments, the plurality of magnet units 316 may be provided with at least one inclined magnet unit 317 and at least one parallel magnet unit 318 . For example, the plurality of magnet units 316 may include only one parallel magnet unit 318 and all remaining magnet units 316 may be 317 . Even with this configuration, the operator can select the parallel magnet unit 318 as the last one when arranging the plurality of magnet units 316 in the magnet holder 320 in the manufacturing process of the rotor 300 .

<Constituent Group H>
In each of the above-described embodiments, the connection bent portion 212f may be any portion of the power lead wire 212 that is bent to connect the coil 211 and the outer circumference lead portion 212a. The connecting bent portion 212f may have, for example, two bent portions. The connecting bent portion 212f may be positioned away from the second coil end portion 211b as long as it is positioned away from the first coil end portion 211a toward the second coil end portion 211b. For example, the connection bend 212f may be between the protection axis Cp and the second coil end 211b in the axial direction AD. Also, the connection bent portion 212f may be between the protection axis Cp and the first coil end portion 211a in the axial direction AD.

In each of the embodiments described above, the connecting bent portion 212f and the grommet 255 do not have to be separated in the axial direction AD. For example, the boundary portion between the connection bent portion 212f and the outer peripheral lead portion 212a may be arranged at the end portion of the grommet hole 450 . In addition, the connection bent portion 212f may enter the inside of the grommet hole 450 .

In each of the embodiments described above, the grommet 255 does not have to extend beyond the protection axis Cp toward the second coil end portion 211b in the axial direction AD. Also, the grommet 255 does not have to extend beyond the first coil end 211a toward the second coil end 211b.

In each of the embodiments described above, the grommet 255 only needs to have at least the grommet cylinder 460 . Even if the grommet 255 does not have the grommet rib 465, the grommet tubular body 460 may be in close contact with the inner peripheral surface of the first recess 172a. This can prevent the molten resin from leaking from between the outer surface of the grommet cylinder 460 and the inner surface of the first concave portion 172a when the coil protection portion 250 is manufactured.

In each of the above-described embodiments, in the grommet 255, if at least a portion of the expansion cylinder portion 462 is embedded in the coil protection portion 250, the tightening cylinder portion 461 may be embedded in the coil protection portion 250. It doesn't have to be. Also, part of the expansion tube portion 462 may be included in the exposed portion 255b. Even in this configuration, if the exposed portion 255 b includes the tightening tube portion 461 , the tightening tube portion 461 prevents the molten resin from leaking out of the grommet hole 450 when the coil protection portion 250 is manufactured.

In each of the embodiments described above, in the grommet 255, the embedded portion 255a may be shorter than the exposed portion 255b. Also, the grommet 255 may not have the exposed portion 255b. That is, the grommet 255 does not have to protrude from the first protective end 250a. In this configuration, the fastening tube portion 461 is included in the embedded portion 255a. In the grommet 255 , the expansion tube portion 462 may be shorter than the tightening tube portion 461 . Also, the grommet 255 may not have the expansion tube portion 462 .

In each of the embodiments described above, the grommet groove 466 only needs to extend in a direction intersecting the axial direction AD. For example, the grommet groove 466 may be provided on the outer surface of the grommet 255 so as to extend in the circumferential direction CD. Also, the concave portion such as the grommet groove 466 does not have to be groove-shaped as long as it can be engaged with the coil protection portion 250 . Furthermore, the embedded engaging portion such as the grommet groove 466 may not be a recess as long as it can engage with the coil protection portion 250 . For example, a convex portion provided on the outer surface of the grommet 255 may be engaged with the coil protection portion 250 as an embedded engaging portion.

In each of the above embodiments, the power lead-out line 212 may extend toward the second rotor 300b in the axial direction AD. In this configuration, the second rotor 300b corresponds to the rotor. Motor device 60 need not have two rotors as long as power lead-out line 212 extends toward rotors such as first rotor 300a in axial direction AD.

<Constructive Group I>
In each of the above embodiments, the rim 344 may have any configuration as long as it supports the rotor 300 against the attraction force F1. For example, a plurality of rims 344 may be arranged in the circumferential direction CD instead of extending annularly in the circumferential direction CD. The rim 344 may not be provided at the outer peripheral end of the shaft flange 342 , but may be provided at a position spaced radially inward from the outer peripheral end of the shaft flange 342 . The rim 344 may be provided individually for each of the first rotor 300a and the second rotor 300b. For example, along with the rim 344, shaft flanges 342 may also be provided separately for each of the first rotor 300a and the second rotor 300b.

In each of the above-described embodiments, the rim 344 may be provided at any position as long as it is away from the shaft body 341 toward the magnet 310 side. For example, the rim 344 may be provided at a position where the distance LI8 with respect to the holder inner peripheral end 320a is smaller than the distance LI5 with respect to the magnet 310 .

In each of the above-described embodiments, the rotation fixing portion such as the holder fixture 350 may have any configuration as long as it fixes the rotor 300 to the spokes 343 . For example, the rotor 300 may be fixed to the spokes 343 by engaging an engaging portion provided on the rotor 300 with the flange fixing hole 345 . In this configuration, the engaging portion provided on the rotor 300 corresponds to the rotation fixing portion.

<Constituent group J>
In each of the above embodiments, the thermal conductivity of the retrofit restricting portion 930 does not have to be lower than that of the housing body 71 . For example, in the eighteenth embodiment described above, the thermal conductivity of the retrofit restricting portion 930 may be higher than the thermal conductivity of the housing body 71 . In this configuration, the thermal conductivity of the retrofit restricting portion 930 is higher than the thermal conductivity of the housing body 71 . The thermal conductivity of the material forming the retrofit restricting portion 930 is higher than the thermal conductivity of the material forming the housing main body 71 .

In the motor housing 70, the housing main body 71 is made of aluminum, for example, and the retrofit restricting portion 930 is made of CFRP, for example. If the CFRP's thermal conductivity is higher than that of aluminum, the CFRP is sometimes referred to as high heat transfer CFRP. In the motor housing 70 in which the housing body 71 is made of aluminum and the retrofitting restriction portion 930 is made of CFRP, the electrical insulation of the retrofitting restriction portion 930 is higher than that of the housing body 71 .

In a configuration in which the heat conductivity of the retrofitting restriction portion 930 is higher than the heat conductivity of the housing body 71 , the heat of the coil portion 215 is easily released to the retrofitting restriction portion 930 . Therefore, the post-attachment restricting portion 930 can enhance the heat radiation effect of releasing the heat of the coil portion 215 to the outside of the motor housing 70 .

In each of the above-described embodiments, the electrical machinery regulating portion may be provided in any manner in the electrical machinery housing. For example, both the displacement regulating portion 920 of the seventeenth embodiment and the retrofitting regulating portion 930 of the eighteenth embodiment may be provided in the motor housing 70 as the electric machine regulating portion. The displacement restricting portion 920 and the retrofit restricting portion 930 may be arranged in the circumferential direction CD or may be arranged in the axial direction AD.

In each of the above-described embodiments, both the stator holding portion 171 and the electrical machinery restricting portion may be provided in the electrical machinery housing. For example, both the stator holding portion 171 and the displacement restricting portion 920 may be provided in the motor housing 70 in the seventeenth embodiment. The displacement restricting portion 920 may extend radially inward from the stator holding portion 171 .

In each of the above-described embodiments, the shape and size of the electric machine regulating portion may be any. For example, in the seventeenth embodiment, the displacement restricting portion 920 does not have to straddle the two coil bodies 900 in the circumferential direction CD. For example, the displacement restricting portion 920 may extend in a plate shape in a direction orthogonal to the circumferential direction CD. In this displacement restricting portion 920, a displacement restricting surface 923 extends in a direction orthogonal to the circumferential direction CD. Further, the displacement restricting portion 920 may extend in the axial direction AD beyond the coil body 900 and may not reach the coil body end surface 902 . Two displacement restricting portions 920 adjacent in the circumferential direction CD may be spaced apart in the circumferential direction CD.

In each of the above embodiments, the gap heat radiating portion may be provided in any way. For example, the motor device 60 may have both the coil protection section 250 of the first embodiment and the outer peripheral heat radiation section 941 of the nineteenth embodiment. Further, the gap heat radiating portion may not be provided. For example, in the seventeenth embodiment, the coil protection portion 250 may not have the protective outer peripheral portion 917 .

In each of the above-described embodiments, the electrical machinery regulator may have any thermal conductivity and electrical insulation. For example, in the eighteenth embodiment described above, the thermal conductivity of the retrofit restricting portion 930 does not have to be higher than the thermal conductivity of the housing body 71 . For example, the thermal conductivity of the retrofit restricting portion 930 may be the same as the thermal conductivity of the housing body 71 . In addition, the electrical insulation of the retrofit restricting portion 930 does not have to be higher than the electrical insulation of the housing main body 71 . For example, the electrical insulation properties of the post-attachment restricting portion 930 may be the same as the electrical insulation properties of the housing body 71 .

<Constituent group K>
In each of the above embodiments, the rotation detector may have any configuration as long as it can detect the rotation state of the shaft body 341 . As the rotation detector, an MR sensor, an encoder, or the like may be used in addition to the resolver 421 . An MR sensor is a magnetic sensor using a magnetoresistive effect element.

In each of the above embodiments, the resolver 421 may be provided at any position in the axial direction AD as long as it is inserted between the power bus bar 261 and the shaft body 341 . For example, the resolver 421 may protrude from the power bus bar 261 to at least one of one side and the other side in the axial direction AD. Also, the resolver 421 does not have to protrude from the power bus bar 261 in the axial direction AD.

In each of the above-described embodiments, the power bus bar 261 may be provided at any position in the radial direction RD as long as it is provided at a position spaced radially outward from the resolver 421 . For example, the power bus bar 261 may be provided at a position closer to the resolver 421 than the motor inner peripheral surface 70b in the radial direction RD. Power bus bar 261 may be provided at a position spaced radially inward from coil portion 215 , or may be provided at a position spaced radially outward from coil portion 215 .

In each of the above embodiments, the power busbar 261 and the resolver 421 may be provided on the rotor 300 side of the rear frame 370 . That is, power bus bar 261 and resolver 421 may be provided between rear frame 370 and rotor 300 . Moreover, at least one of the power bus bar 261 and the resolver 421 may be provided on the rear frame 370 . Further, power busbar 261 and resolver 421 may be provided on drive frame 390 . In this configuration, the drive frame 390 corresponds to the electrical cover.

In each of the above-described embodiments, the neutral point bus bar 290 may be provided at any position in the axial direction AD as long as it is separated from the resolver 421 in the axial direction AD. For example, the neutral point bus bar 290 may be provided at a position closer to the first rotor 300a than the second rotor 300b in the axial direction AD. Neutral point bus bar 290 may be provided between rear frame 370 and first rotor 300a. The neutral point bus bar 290 may be provided on the opposite side of the resolver 421 via both the first rotor 300a and the second rotor 300b in the axial direction AD.

In each of the above-described embodiments, the neutral point bus bar 290 may be provided at any position in the radial direction RD as long as it is separated from the resolver 421 in the axial direction AD. For example, the neutral point bus bar 290 may be provided at a position aligned with the resolver 421 in the axial direction AD. Moreover, the neutral point bus bar 290 may be provided at a position radially outwardly spaced from the power bus bar 261 in the radial direction RD.

In each of the embodiments described above, at least one of the power bus bar 261 and the neutral point bus bar 290 may be an energizing bus bar. For example, power bus bar 261 and neutral point bus bar 290 may be arranged in radial direction RD. In this configuration, the resolver 421 only needs to be inside both the power busbar 261 and the neutral point busbar 290 .

<Constituent group L>
In each of the above embodiments, the plurality of magnet pieces 505 included in one magnet 310 may have different thickness dimensions. For example, only a specific magnet piece 505 among the plurality of magnet pieces 505 may have a larger thickness dimension or a smaller thickness dimension. The twentieth embodiment is an example in which the thickness dimension of only specific magnet pieces 505, ie, the inner peripheral end piece 871 and the outer peripheral end piece 872, among the plurality of magnet pieces 505 is increased. Moreover, in the plurality of magnets 310 included in one magnet unit 316, the thickness dimension of the magnet piece 505 included in each magnet 310 may be different. For example, the thickness dimension of the magnet piece 505 of the inclined magnet 314 and the thickness dimension of the magnet piece 505 of the parallel magnet 315 may be different.

In each of the above embodiments, as long as one magnet 310 has a plurality of magnet pieces 505, the shape and size of the magnet pieces 505 may be set in any way. For example, the thickness dimension of the plurality of magnet pieces 505 included in one magnet 310 may be the same as the thickness dimension of the inner peripheral end piece 871 of the twentieth embodiment. Also, the thickness dimension of the plurality of magnet pieces 505 included in one magnet 310 may be the same as the thickness dimension of the outer peripheral end piece 872 . Furthermore, the plurality of magnet pieces 505 included in one magnet 310 may include at least one of the inner peripheral end piece 871 and the outer peripheral end piece 872 .

In each of the above embodiments, the magnet piece 505 does not have to be orthogonal to neither the unit centerline C316 nor the magnet centerline C310. For example, the magnet piece 505 may be inclined in at least one of the circumferential direction CD and the axial direction AD with respect to at least one of the unit centerline C316 and the magnet centerline C310. Moreover, in the magnet piece 505, the inner peripheral piece surface 505a and the outer peripheral piece surface 505b may be inclined with respect to each other.

In each of the above embodiments, the plurality of magnet pieces 505 included in one magnet 310 may be stacked in any direction. For example, in one magnet 310, a plurality of magnet pieces 505 may be laminated in the axial direction AD or the circumferential direction CD.

In each of the above-described embodiments, in one magnet 310 , the multiple magnet pieces 505 do not have to be oriented in the same direction. That is, in one magnet 310 , the magnetization directions of the magnet pieces 505 may differ among the plurality of magnet pieces 505 . In this configuration as well, the magnet 310 may be oriented in a predetermined direction. That is, it is sufficient that one magnet 310 has a specific direction as its magnetization direction.

In each of the embodiments described above, the magnet unit 316 may have at least one of the inclined magnet 314 and the parallel magnet 315 . For example, the inclined magnet unit 317 may have any number of the inclined magnets 314 and the parallel magnets 315 as long as the pair of unit side surfaces 316c are inclined with respect to each other. The tilt magnet unit 317 may have, for example, only the tilt magnet 314 out of the tilt magnet 314 and the parallel magnets 315 . Also, the parallel magnet unit 318 may have any number of the inclined magnets 314 and the parallel magnets 315 as long as the pair of unit side surfaces 316c are parallel to each other. Parallel magnet unit 318 may include tilted magnets 314, for example. In this inclined magnet 314, the length dimension of the magnet inner peripheral end 310a in the circumferential direction CD may be larger than the length dimension of the magnet outer peripheral end 310b.

In each of the above embodiments, as long as the plurality of magnets 310 are arranged in a Halbach array, the shape, size, number, and orientation of these magnets 310 may be combined in any way. For example, both the inner magnets 312a and 312b and the inner magnet 882 may be provided between the first magnet 311a and the second magnet 311b in the circumferential direction CD, and the inner magnet 882 may be Three or more may be provided. Moreover, in the circumferential direction CD, the width dimension of the circumferential magnets 311a and 311b may be larger than at least one of the inner magnets 312a and 312b and the outer magnets 313a and 313b. Furthermore, the first orienting unit 319a and the second orienting unit 319b may have only one magnet 310, or may have four or more magnets 310. FIG.

In each of the above embodiments, the rotor 300 may not have the magnet unit 316 as long as it has a plurality of magnets 310 . For example, in rotor 300 , all magnets 310 may be individually fixed to magnet holders 320 without being unitized.

In each of the above embodiments, the worker may prepare the strip magnets 512 in any way in the manufacturing process of the magnet 310 . For example, the sintered block 511 may be purchased and prepared in the preparatory step of preparing the strip magnet 512 . The worker manufactures strip magnets 512 by carrying out the strip process using the prepared sintered block 511 . Alternatively, the strip magnet 512 may be purchased and prepared.

In each of the above-described embodiments, the grinding of the magnet base material 513 may be performed in any way before the unit base material 514 is manufactured in the unit base material process. For example, in the magnet side surface process, at least the magnet side surface 310 c may be formed on the magnet base material 513 . In the magnet side surface process, the worker may form at least one of the inner peripheral tapered surface 310d, the outer peripheral tapered surface 310e, the first magnet surface 310g, and the second magnet surface 310h in addition to the magnet side surface 310c.

<Constituent Group M>
In each of the embodiments described above, the axial gap 475 may have any shape as long as it is a gap between the stator 200 and the rotor 300 . For example, in the axial gap 475, the direction in which the outer peripheral end 476 of the gap is open does not have to be radially inward. Also, the direction in which the gap inner peripheral end 477 is open does not have to be radially outward. For example, the gap outer peripheral end 476 and the gap inner peripheral end 477 may be open in the axial direction AD.

In each of the above-described embodiments, a plurality of rotor inner peripheral holes such as the holder adjustment holes 326 may be provided between two holder ribs 323 adjacent to each other in the circumferential direction CD. Further, the rotor inner peripheral hole does not have to be provided between the two holder ribs 323 adjacent in the circumferential direction CD. The rotor inner peripheral hole provided between the two holder ribs 323 adjacent in the circumferential direction CD may be either a clearance side hole such as the holder adjustment hole 326 or a shaft portion side hole such as the holder central hole 324 . At least one of the gap side hole and the shaft side hole may be provided as the rotor inner peripheral hole.

In each of the embodiments described above, at least one rotor inner peripheral hole such as the holder adjustment hole 326 may be provided in the rotor 300 . For example, in a configuration in which the holder central hole 324 is provided as the rotor inner peripheral hole, only one rotor inner peripheral hole may be provided. The rotor inner peripheral hole may be provided on at least one of the radially outer side and the radially inner side with respect to the support partition portion such as the rim 344 . For example, at least one of the holder adjustment hole 326 and the holder central hole 324 may be provided in the rotor 300 . At least one of the holder central hole 324, the holder fixing hole 325, and the holder pin hole 327 may be provided as the shaft side hole.

In each of the above-described embodiments, the rotor ribs such as the holder ribs 323 may be provided in any manner as long as an airflow is generated as the rotor 300 rotates. For example, the rotary rib may extend radially outward from holder outer peripheral edge 320b. Further, the rotary rib may extend radially inward from the holder inner peripheral end 320a. Furthermore, the rotary rib may be provided so as to extend from at least one of holder main body 321 and magnet 310 toward stator 200 . If an airflow is generated as the rotor 300 rotates, the rotor rib may not be provided.

<Constituent group N>
In each of the above embodiments, as long as the seal member is sandwiched between the motor housing 70 and the fixed object, the recess into which the seal member enters may be provided in either the motor housing 70 or the fixed object. Also, the recess may not be provided in either the motor housing 70 or the fixed object. Furthermore, as long as the gap between the motor housing 70 and the object to be fixed is closed by the seal member, the seal member may contact any part of the motor housing 70 and the object to be fixed.

In each of the embodiments described above, a plurality of fixed objects may be fixed to the motor housing 70 . For example, both the rear frame 370 and the drive frame 390 may be fixed to the motor housing 70 as objects to be fixed. In this configuration, a seal member is provided between the motor housing 70 and the drive frame 390 .

<Construction group A>
In a motor such as an axial gap type motor, there is concern that the insulation reliability of the electrical insulation state between the power busbar and the neutral point busbar may deteriorate. In view of this, the present invention provides a rotating electric machine capable of enhancing electrical insulation reliability.

According to feature A1, the neutral point busbar (290) is provided at a position spaced apart from the busbar protection part (270) that has electrical insulation and protects the power busbar (261). In this configuration, the neutral point bus bar (290) and the power bus bar (261) do not come into contact with each other, and the neutral point bus bar (290) and the bus bar protection unit (270) do not even come into contact with each other. It has become. For this reason, the neutral point bus bar (290) and the bus bar protection part (270) are spaced apart from each other to reduce the reliability of the electrical insulation between the neutral point bus bar (290) and the power bus bar (261). It can be suppressed by Therefore, the distance between the neutral point busbar (290) and the busbar protection portion (270) increases the electrical insulation reliability of the rotating electric machine (60).

According to feature A10, one of the first space (S1) and the second space (S2) aligned in the axial direction (AD) is provided with a power busbar (261) and the other is provided with a neutral point busbar (290). is provided. Moreover, the first space (S1) and the second space (S2) are separated by the space partition (370). In this configuration, the space partition (370) restricts contact between the neutral point bus bar (290) and the power bus bar (261). In this way, the space partition (370) can suppress the deterioration of the insulation reliability with respect to the electrical insulation state between the neutral point bus bar (290) and the power bus bar (261). Therefore, the electrical insulation reliability of the rotating electrical machine (60) can be enhanced by the space partition (370).

[Feature A1]
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
Rotors (300, 300a, 300b) that rotate about a rotation axis (Cm) and are aligned with the stator in an axial direction (AD) in which the rotation axis extends;
a power busbar (261) electrically connected to and supplying power to the coil;
a busbar protector (270) having electrical insulation and protecting the power busbar;
a neutral point bus bar (290) provided at a position spaced from the bus bar protection section and electrically connected to the neutral point (65) side in each of the multiple phase coils;
A rotating electric machine.

[Feature A2]
The first space and the second space extend in a direction orthogonal to the rotation axis, and the first space (S1) accommodating the stator and the second space (S2) not accommodating the stator are aligned along the rotation axis. A space partition (370) that separates the
The rotary electric machine according to feature A1, wherein one of the first space and the second space is provided with a power busbar, and the other is provided with a neutral point busbar.

[Feature A3]
The rotating electric machine according to feature A1 or A2, wherein the neutral point busbar and the busbar protection portion are provided at positions spaced apart in the axial direction.

[Feature A4]
As rotors, a first rotor (300a) and a second rotor (300b) arranged axially with the first rotor via the stator,
The rotating electric machine according to any one of features A1 to A3, wherein the coil is formed by winding a coil wire (220) having a plurality of wires (223).

[Feature A5]
The coil is formed of a plurality of coil portions (215) wound with a coil wire (220) and arranged in a circumferential direction (CD) of the rotation axis,
The rotary electric machine according to any one of features A1 to A4, wherein two coil portions adjacent in the circumferential direction have different numbers of turns.

[Feature A6]
a relay bus bar (280) electrically connected to a power converter (81) that converts power and supplies it to the power bus bar;
a terminal block (285) supporting a connecting portion between the power busbar and the relay busbar;
The rotating electric machine according to any one of features A1 to A5, comprising:

[Feature A7]
The rotary electric machine according to feature A6, wherein when the circumference of the rotation axis is divided into a plurality of divided regions (RE) at equal intervals in the circumferential direction of the rotation axis, one relay bus bar is arranged in each of the plurality of divided regions.

[Feature A8]
a bearing (360) rotatably supporting the rotor;
a support frame (370) having a bearing support (372) that supports the bearing and a busbar support (371) that supports the busbar protector;
The rotating electric machine according to any one of features A1 to A7, comprising:

[Feature A9]
an orthogonal frame (370) extending in a direction orthogonal to the axis of rotation;
a rotation detection part (421) provided on the opposite side of the neutral point busbar in the axial direction via the orthogonal frame for detecting the rotation angle of the rotor;
The rotating electric machine according to any one of features A1 to A8, comprising:

[Feature A10]
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
Rotors (300, 300a, 300b) that are aligned with the stator in the axial direction (AD) in which the axis of rotation (Cm) extends and rotate about the axis of rotation with respect to the stator;
a power busbar (261) electrically connected to and supplying power to the coil;
a neutral point busbar (290) electrically connected to the neutral point (65) side in each of the multi-phase coils;
The first space and the second space are separated so that the first space (S1) in which the stator is accommodated and the second space (S2) in which the stator is not accommodated are aligned in the axial direction, extending in a direction perpendicular to the rotation axis. a partitioning space divider (370);
with
A rotating electrical machine, wherein one of a first space and a second space is provided with a power busbar, and the other is provided with a neutral point busbar.

<Construction group B>
A motor such as an axial gap type motor is concerned about a decrease in energy efficiency. In view of this, a rotating electrical machine capable of improving energy efficiency is provided.

According to feature B1, the magnetic flux generated by the pair of peripheral magnets (311a, 311b) and the pair of inner shaft magnets (312a, 312b) concentrates on the stator (200) side, so that the magnetic field on the stator (200) side becomes tend to be strong. Therefore, the energy efficiency of the rotating electrical machine (60) can be enhanced.

[Feature B1]
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
Rotors (300, 300a, 300b) that rotate about a rotation axis (Cm) and are aligned with the stator in an axial direction (AD) in which the rotation axis extends;
with
The rotor is
It has a plurality of magnets (310, 311a, 311b, 312a, 312b, 313a, 313b) arranged in the circumferential direction (CD) of the rotation axis,
For multiple magnets,
a pair of inner magnets (312a, 312b) adjacent in the circumferential direction and oriented obliquely with respect to the axis of rotation so as to face the stator in the axial direction;
a pair of circumferential magnets (311a, 311b) adjacent to each other in the circumferential direction via a pair of inner magnets and oriented so as to face each other in the circumferential direction;
A rotating electrical machine that contains a

[Feature B2]
The rotating electric machine according to feature B1, wherein the pair of inner magnets are oriented so as to face the stator side in the axial direction and face each other in the circumferential direction so as to be inclined in the circumferential direction with respect to the rotation axis.

[Feature B3]
For multiple magnets,
includes a pair of outer magnets (313a, 313b) that are provided on opposite sides of the pair of inner magnets in the circumferential direction via the circumferential magnets and that are adjacent in the circumferential direction,
The pair of outer shaft magnets are oriented circumferentially inclined with respect to the axis of rotation so as to face axially opposite to the stator and circumferentially opposite to each other. Rotating electric machine described.

[Feature B4]
The rotors are arranged in pairs in the axial direction via the rotors,
One rotor (300a) has a pair of inner magnets and the other rotor (300b) has a pair of outer magnets arranged in the axial direction, and is symmetrical with respect to the other rotor. The rotating electric machine according to feature B3.

[Feature B5]
The magnet forms a magnet inclined surface (316d) inclined with respect to the axis of rotation,
The rotor is
a magnet holder (320) axially superimposed on the magnet from one side;
It has an inclined support surface (330a) inclined with respect to the axis of rotation, and the magnet is placed in the magnet holder such that the inclined support surface overlaps the inclined magnet surface and the magnet is sandwiched between the inclined support surface and the magnet holder. a fixed support (330) fixed to the
The rotating electric machine according to any one of features B1 to B4, having:

[Feature B6]
The rotor is
A plurality of magnet units (316, 317, 318) arranged in the circumferential direction, having a pair of unit side surfaces (316c) arranged in the circumferential direction and configured to include at least one magnet,
In multiple magnet units,
an inclined magnet unit (317) in which a pair of side surfaces of the unit are relatively inclined so as to move away from each other toward the outside in the radial direction (RD) of the rotation axis;
a parallel magnet unit (318) having a pair of parallel unit sides;
The rotating electric machine according to any one of features B1 to B5, which includes:

[Feature B7]
a shaft (340) having a shaft flange (342) axially aligned with and fixed to the rotor for rotation therewith about an axis of rotation;
The fulcrum of the rotor by the shaft flange ( a pressing member (350) applying a pressing force (F3) to the rotor on the side opposite the magnet via 344a);
The rotating electric machine according to any one of features B1 to B6, comprising:

[Feature B8]
the pressing member is a fixture (350) that secures the rotor to the shaft flange;
The rotary electric machine according to feature B7, wherein the portion (325) to which the pressing member is fixed in the rotor and the portion (345) to which the pressing member is fixed in the shaft flange are separated in the axial direction.

[Feature B9]
a first rotor (300a) which is a rotor;
a second rotor (300b) which is a rotor and is axially aligned with the first rotor via the stator;
a shaft flange (342) disposed axially between the first and second rotors and rotating with the first and second rotors about an axis of rotation;
a first rotor hole (325a) provided in the first rotor and extending in the axial direction;
a second rotor hole (325b) provided in the second rotor at a position circumferentially spaced apart from the first rotor hole and extending in the axial direction;
a first shaft hole (345a) provided in the shaft flange at a position axially aligned with the first rotor hole and extending in the axial direction;
a second shaft hole (345b) provided in the shaft flange at a position axially aligned with the second rotor hole and extending in the axial direction;
with
A first fixture (350a) for fixing the first rotor to the shaft flange is inserted into the first rotor hole and the first shaft hole,
The rotary electric machine according to any one of features B1 to B8, wherein a second fixture (350b) for fixing the second rotor to the shaft flange is inserted into the second rotor hole and the second shaft hole.

<Constituent group C>
Motors such as axial gap motors are concerned about insufficient heat radiation effect. In view of this, the present invention provides a rotating electric machine capable of enhancing the heat radiation effect.

According to feature C1, the coil protection part (250) is provided in a state of being superimposed on the inner peripheral surface (70b) of the electric machine housing (70). In this configuration, the heat of the coil (211) is easily transferred to the electric machine housing (70) through the coil protection portion (250). Moreover, since the outer peripheral surface (70a) of the electric machine housing (70) is provided with heat radiation fins (72), the heat transferred from the coil protection part (250) to the electric machine housing (70) is dissipated by the heat radiation fins (72). It is easily released to the outside. Therefore, the heat dissipation effect of the rotating electric machine (60) can be enhanced.

[Feature C1]
A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
Rotors (300, 300a, 300b) that rotate about a rotation axis (Cm) and are aligned with the stator in an axial direction (AD) in which the rotation axis extends;
an electrical machine housing (70) containing the stator and rotor;
a heat radiating fin (72) provided on the outer peripheral surface (70a) of the electrical housing to radiate heat;
with
The stator
A rotary electric machine having a coil protection part (250) provided in a state of being superimposed on an inner peripheral surface (70b) of an electric machine housing, having thermal conductivity, and protecting a coil.

[Feature C2]
The electric housing has a plurality of protrusions (171, 172, 173, 174) provided on the inner peripheral surface,
The rotating electric machine according to feature C1, wherein the coil protection portion is in a state of entering between the projections from the inside in the radial direction (RD) of the rotation axis.

[Feature C3]
the plurality of projections includes a plurality of axial projections (174) extending axially and aligned in a circumferential direction (CD) of the axis of rotation;
The coil is formed of a plurality of coil portions (215) arranged in a circumferential direction and having a coil wire (220) wound thereon,
The rotating electrical machine according to feature C2, wherein the coil portion is provided at a position facing the shaft protrusion in the radial direction (RD) of the rotation axis.

[Feature C4]
the inner peripheral surface includes a housing base surface (176) and a housing roughened surface (177) that is rougher than the housing base surface;
The rotating electric machine according to any one of features C1 to C3, wherein the coil protection part is superimposed on at least the rough surface of the housing.

[Feature C5]
Features C1 to C4, comprising a lead wire protector (255) that protects a coil lead wire (212) drawn out from the coil through the coil protector and fills a gap between the coil lead wire and the coil protector. The rotary electric machine according to any one of the above.

[Feature C6]
The stator
A bobbin (240) which is protected together with the coil by the coil protection part, emits heat to the coil protection part, has electrical insulation, and is wound with the coil (240), having any one of the features C1 to C5 Rotating electric machine described.

[Feature C7]
The bobbin has a bobbin base surface (246) and a bobbin rough surface (247) that is rougher than the bobbin base surface;
The rotating electric machine according to feature C6, wherein the coil protection part is superimposed on at least the rough surface of the bobbin.

[Feature C8]
The stator
Feature C6 having a core (231) located inside the bobbin and having a width in the circumferential direction (CD) of the axis of rotation that gradually decreases radially inward (RD) of the axis of rotation. Or the rotary electric machine according to C7.

[Feature C9]
The bobbin is
a bobbin body (241) around which the coil is wound;
a bobbin flange (242) having a flange surface (243) facing the coil side and extending outward from the outer peripheral surface (241a) of the bobbin body;
and
The rotating electric machine according to any one of features C6 to C8, wherein the flange surface is provided with a recessed flange recess (243a) for passing a coil lead wire (212) drawn out from the coil.

<Constituent Group D>
In motors such as axial gap motors, there is concern that the heat dissipation effect of the motor may be insufficient. As for the motor, it is conceivable to form a unit by providing the motor integrally with the inverter. As for this unit, it is considered that the heat dissipation effect of the unit tends to be insufficient due to heat from the inverter. On the other hand, a rotary electric machine unit is provided that can achieve both miniaturization and improved heat radiation effect.

According to the feature D1, the power converter (81), the rotors (300, 300a, 300b) and the stator (200) arranged in the axial direction (AD) are housed in the unit housing (51). With this configuration, it is possible to reduce the size of the rotary electric machine unit (50) while making the rotary electric machine (60) thinner. Moreover, since the heat radiation fins (72, 92) are provided on the outer peripheral surfaces (70a, 90a) of the unit housing (51), the heat radiation effect of the rotary electric machine unit (50) can be enhanced by the heat radiation fins (72, 92). can be done. Therefore, both miniaturization of the rotary electric machine unit (50) and improvement of the heat radiation effect can be achieved.

[Feature D1]
A rotating electric machine unit (50) driven by supply of electric power,
A rotating electrical machine (60) having rotors (300, 300a, 300b) that rotate around a rotation axis (Cm) and a stator (200) that is aligned with the rotor in an axial direction (AD) in which the rotation axis extends; ,
a power conversion device (80) having a power conversion section (81) for converting power supplied to a rotating electric machine;
a unit housing (51) that forms both the outer peripheral surface (70a) of the rotating electric machine and the outer peripheral surface (90a) of the power conversion device and accommodates the rotor, the stator, and the power conversion section;
radiating fins (72, 92) provided on the outer peripheral surface (70a, 90a) of the unit housing to radiate heat;
Rotating electric machine unit.

[Feature D2]
The stator
a coil (211) through which current flows;
a coil protection part (250) provided in a state of being superimposed on the inner peripheral surface (70b) of the unit housing, having thermal conductivity, and protecting the coil;
The rotary electric machine unit according to feature D1, having:

[Feature D3]
The rotating electric machine is
an electric machine housing (70) that is included in the unit housing, forms the outer peripheral surface of the rotating electric machine, and accommodates the rotor and the stator,
The power converter is
a device housing (90) that is included in the unit housing, forms an outer peripheral surface of the power conversion device, and accommodates the power conversion section;
The rotary electric machine unit according to feature D1 or D2, wherein in the unit housing, the electric machine housing and the device housing are axially aligned.

[Feature D4]
a shaft (340) having a shaft flange (342) axially aligned with and fixed to the rotor and rotating with the rotor about an axis of rotation;
Shaft flange is
an annular portion (344) disposed inside the stator in the radial direction (RD) of the axis of rotation and extending annularly along the stator in the circumferential direction (CD) of the axis of rotation;
a flange vent (345) extending radially through the annulus to permit radial venting;
The rotary electric machine unit according to any one of features D1 to D3, having:

[Feature D5]
a balance adjustment hole (326) provided in the rotor for adjusting the balance of the rotor;
1. Any one of features D1-D4, wherein the balancing holes extend axially through the rotor and are provided inside the stator in the radial direction (RD) of the axis of rotation to allow airflow in the axial direction. The rotary electric machine unit according to 1.

[Feature D6]
a housing partition (370, 424) that partitions the interior of the unit housing into a rotary electric machine side and a power converter side in the axial direction;
a plurality of state detection units (421, 431) that detect the state of the rotating electric machine;
a wiring consolidation unit (440) that consolidates the detection wirings (426, 436) that are provided on the power converter side of the housing partition and are electrically connected to each of the plurality of state detection units;
The rotating electric machine unit according to any one of features D1-D5, comprising:

[Feature D7]
a housing partition (370, 424) that partitions the interior of the unit housing into a rotary electric machine side and a power converter side in the axial direction;
a partition opening (373) through which a coil lead wire (212) drawn from a coil (211) of the stator is inserted and which opens the housing partition in the axial direction;
a partition cover portion (380) covering the partition opening;
The rotating electrical machine unit of feature D6, comprising:

[Feature D8]
unit housing
It has an electric machine housing (70) that forms the outer peripheral surface of the rotating electric machine and accommodates the rotor and the stator,
electric housing,
a housing body (71) forming an outer peripheral surface of the rotating electric machine;
an electrical machine flange (74, 178) projecting outwardly from the housing body in the radial direction (RD) of the axis of rotation;
an electric machine fixing hole (74a, 178a) provided in the electric machine flange for fixing the electric machine housing to a predetermined housing fixing target (90, 390);
The rotating electric machine unit according to any one of features D1 to D7, having:

[Feature D9]
unit housing
an electric machine housing (70) that forms the outer peripheral surface of the rotating electric machine and accommodates the rotor and the stator;
an electric machine cover part (390) fixed to the electric machine housing and covering the rotor and the stator from one side in the axial direction;
and
The electric cover part is
a first fixing hole (392a) for fixing the electric machine cover portion to the electric machine housing;
a second fixing hole (392b) aligned with the first fixing hole in the radial direction (RD) of the rotation axis and for fixing the electric machine cover portion to a predetermined cover fixing target (53);
The rotating electric machine unit according to any one of features D1 to D8, having:

<Construction group A>
60... Motor device as rotary electric machine 65... Neutral point 81... Inverter as power converter 200... Stator 211... Coil 215... Coil part 220... Coil wire 223... Wire 261... Power Bus bar 270 Bus bar protection section 280 Relay terminal as relay bus bar 285 Terminal block as terminal block 290 Neutral point bus bar 300 Rotor 300 a First rotor as rotor 300 b Rotor 360... First bearing as bearing 370... Space partition, rear frame as support frame and orthogonal frame, 371... Busbar support part, 372... Bearing support part, 421... Resolver as rotation detection part , S1 .

<Construction group B>
60... Motor device as rotary electric machine 200... Stator 211... Coil 300... Rotor 300a... First rotor as rotor 300b... Second rotor as rotor 310... Magnet 311a... As magnet and peripheral magnet 311b... second peripheral magnet as a magnet and a peripheral magnet, 312a... first inner magnet as a magnet and an inner magnet, 312b... second inner magnet as a magnet and an inner magnet, 313a ... first outer magnet as magnet and outer magnet, 313b... second outer magnet as magnet and outer magnet, 316... magnet unit, 317... inclined magnet unit as magnet unit, 318... magnet unit Parallel magnet unit 316c Unit side surface 316d Inner peripheral tapered surface as magnet inclined surface 320 Magnet holder 325 Holder fixing hole as part 325a First holder fixing hole as first rotor hole 325b Second holder fixing hole as second rotor hole 330 Fixing block as fixing support portion 330a Block tapered surface as support inclined surface 340 Shaft 342 Shaft flange 344a Rim tip as fulcrum Part 345... Flange hole as a part 345a... First flange hole as a first shaft hole 345b... Second flange hole as a second shaft hole 350... Holder fixture as a pressing member 350a... First First holder fixture as fixture, 350b... Second holder fixture as second fixture, F1... Suction force, F2... Bending stress, F3... Pressing force, Cm... Motor axis line as rotation axis, AD... Axial direction, CD: circumferential direction, RD: radial direction.

<Constituent group C>
60... Motor device as a rotating electric machine 70... Motor housing as an electric machine housing 70a... Outer peripheral surface 70b... Inner peripheral surface 72... Motor fins as radiation fins 171... Stator holding portions as convex portions 172... First peripheral holding portion as a convex portion 173... Second peripheral holding portion as a convex portion 174... Shaft holding portion as a convex portion and a shaft convex portion 176... Housing base surface 177... Housing rough surface 200... Stator 211... Coil 212... Power lead wire as coil lead wire 215... Coil part 220... Coil wire 231... Core 240... Bobbin 241... Bobbin body part 241a... Outer peripheral surface 242... Bobbin flange , 243 Flange inner plate surface as flange surface 243a Flange concave portion 246 Bobbin base surface 247 Bobbin rough surface 250 Coil protection portion 255 Grommet as lead wire protection portion 300 Rotor 300a A first rotor as a rotor, 300b... A second rotor as a rotor, 310... Magnet, Cm... A motor axis as a rotation axis, AD... Axial direction, CD... Circumferential direction, RD... Radial direction.

<Constituent Group D>
50 Motor device unit as rotating electric machine unit 51 Unit housing 53 Reduction gear as cover fixing target 60 Motor device as rotating electric machine 70 Motor housing as electric machine housing 71 Housing body 70a Outer peripheral surface 70b Inner peripheral surface 72 Motor fins as heat radiating fins 74 Connection flanges as electrical machine flanges 74a Flange holes as electrical machine fixing holes 80 Inverter device as power converter 81 Inverter as a power conversion unit 90... Device housing and inverter housing as housing fixing target 90a... Outer peripheral surface 92... Inverter fin 178... Fixed flange as electric machine flange 178a... Flange hole as electric machine fixing hole 200 Stator 211 Coil 212 Power lead wire as coil lead wire 250 Coil protector 300 Rotor 300 a First rotor as rotor 300 b Second rotor as rotor 326 Balance adjustment Holder adjustment holes as holes 340 Shaft 342 Shaft flange 344 Rim as annular portion 345 Flange ventilation hole 370 Rear frame as housing partition 373 Frame opening as partition opening , 380 . Resolver as state detection unit 424 Resolver cover as housing partition 426 Signal wiring as detection wiring 431 Temperature sensor as state detection unit 436 Signal wiring as detection wiring 440 Wiring aggregation A signal terminal block as a part, Cm... A motor axis line as a rotation axis line, AD... Axial direction, CD... Circumferential direction, RD... Radial direction.

<Constituent group N>
60... Motor device as a rotating electric machine 70... Motor housing as an electric machine housing 70a... Motor outer peripheral surface as an electric machine outer peripheral surface 71... Housing main body as an electric machine outer peripheral wall 72... Motor fins as heat radiation fins 78... Motor seal holding part as a seal holding part 80... Inverter device as a power conversion device 90... Inverter housing as a fixing target and device housing 90a... Inverter outer peripheral surface 100... Unit duct as an outer peripheral duct 105... Outer periphery Duct flow path as flow path 200... Stator 211... Coil 212... Electric power lead as coil lead wire 212a... Outer circumference lead part 212b... Inner circumference lead part 212c... Cross lead part as through lead part , 261... Power bus bar as connection target 300a... First rotor as rotor 370... Rear frame as fixing target and cover member 370a... Rear outer peripheral surface as target outer peripheral surface 376... Rear as target holding part Holding portion 376a Motor-side rear groove as target recess 402 Motor seal portion as seal member 825 Inverter inner peripheral holding portion as target holding portion 825a Inverter inner peripheral groove as target recess 826 Motor inner circumference holding portion as a seal holding portion 828...Housing seal portion as a seal member 830...Second motor device as another rotating electric machine 832...Second motor housing as a housing 832a...As a target outer peripheral surface 835 . , Fb4, Fb5... Airflow, AD... Axial direction, CD... Circumferential direction, RD... Radial direction.

Claims (15)

A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiation fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat, an electric machine housing (70) housing the stator and the rotor and fixed to fixed objects (370, 90, 830) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
a seal holding part (78, 826) provided on the outer peripheral wall of the electric machine, which sandwiches and holds a seal member (402, 828) between the fixing target and the fixing target by fixing the fixing target to the electric housing;
with
The outer peripheral surface of the electric machine extends in the axial direction together with the target outer peripheral surface (370a, 90a, 832a), which is the outer peripheral surface of the fixed target, in a state where the fixing target is fixed to the electric housing. A rotary electric machine provided outside the seal holding portion in the radial direction (RD) of the rotation axis so as to be continuously aligned with the target outer peripheral surface in the direction. The seal holding portion is configured such that the seal member sandwiched between the fixing target and the fixing target in a state where the fixing target is fixed to the electric machine housing is arranged inside the outer peripheral wall of the electric machine in the radial direction. The rotating electric machine according to claim 1, provided on the outer peripheral wall of the electric machine. It is pulled out from the coil, passes through the outer peripheral side of the rotor arranged in the axial direction on the stator, and reaches a connection object (261) provided on the opposite side to the coil via the rotor in the axial direction. a coil lead wire (212) electrically connected,
3. The rotating electric machine according to claim 1, wherein said coil lead wire is curved so as to pass inside said seal member in said radial direction. The coil lead wire is
an outer circumference drawing portion (212a) provided on the outer circumference side of the rotor and extending in the axial direction toward the seal member;
an inner circumference lead-out portion (212b) provided on the connection target side of the rotor in the axial direction and extending in the axial direction on the inner circumference side of the seal member;
a through drawn portion (212c) extending radially inward from the outer circumferential drawn portion toward the inner circumferential drawn portion so as to pass between the seal member and the rotor in the axial direction;
The rotary electric machine according to claim 3, comprising: The fixed target has a target holding portion (376, 825, 835) that holds the sealing member so as to restrict the displacement of the sealing member,
5. The seal holding portion sandwiches the seal member held by the object holding portion and the object holding portion in a state where the fixed object is fixed to the electric housing. The rotary electric machine described in 1. The target holding portion has target recesses (376a, 825a, 835a) that are recessed so as to open toward the seal holding portion,
6. The rotation according to claim 5, wherein the seal holding portion sandwiches the seal member, which is provided to enter the target recess, between the target recess and the target recess while the fixing target is fixed to the electric housing. electric machine. 7. The rotating electric machine according to claim 5, wherein said object holding portion is provided inside said seal holding portion in said radial direction in a state in which said fixed object is fixed to said electric machine housing. 8. The apparatus according to any one of claims 1 to 7, further comprising a cover member (370) fixed to the electric machine housing and covering an inner space of the outer peripheral wall of the electric machine from the axial direction as the fixed object. Rotating electric machine described. As the fixed object, a device housing (90) included in a power conversion device (80) for converting power supplied to the rotating electric machine and extending in the circumferential direction along the outer peripheral wall of the electric machine is attached to the electric machine housing. The rotating electric machine according to any one of claims 1 to 8, which is fixed. The electric rotating machine according to any one of claims 1 to 9, wherein a housing (832) included in another electric rotating machine (830) is fixed to the electric machine housing as the object to be fixed. An outer peripheral duct (100) provided so as to cover the outer peripheral wall of the electric machine from the outer peripheral side of the heat radiating fins and forming an outer peripheral flow path (105) through which gas flows in the axial direction between the outer peripheral wall of the electric machine and the outer peripheral wall of the electric machine; The rotating electric machine according to any one of claims 1 to 10, comprising: A blower (840) that is arranged along the outer peripheral wall of the electric machine in the axial direction and blows air so that gas flows in the axial direction along the outer peripheral surface of the electric machine. The rotary electric machine described in . The rotary electric machine according to any one of claims 1 to 12, which is mounted on the aircraft as a drive source for driving and rotating the rotor blades of the aircraft. A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiation fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat, an electric machine housing (70) that houses the stator and the rotor and is fixed to a fixed target (90) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
with
a seal holding part (845) provided on the outer peripheral wall of the electric machine and sandwiching a seal member (828) between the fixing target and the fixing target by fixing the fixing target to the electric housing;
The outer peripheral surface of the electric machine is the outer peripheral surface of the fixed target in a state where the fixed target is fixed to the electric machine housing and an air flow (Fb4) flowing in the axial direction from the fixed target toward the electric machine housing is generated. It is provided on the outer side of the seal holding portion in the radial direction so as to extend in the axial direction together with the target outer peripheral surface (90a) and to separate inwardly from the target outer peripheral surface in the radial direction (RD) of the rotation axis. rotating electric machine. A rotating electrical machine (60) driven by supply of electric power,
a stator (200) having multi-phase coils (211);
a rotor (300a) that rotates about an axis of rotation (Cm);
An electric machine outer peripheral wall (71) extending in the circumferential direction (CD) of the rotation axis, and heat radiation fins (72) provided on the electric machine outer peripheral surface (70a) of the electric machine outer wall and radiating heat, an electric machine housing (70) that houses the stator and the rotor and is fixed to a fixed target (90) arranged on the outer peripheral wall of the electric machine in the axial direction (AD) of the rotation axis;
with
a seal holding part (78) provided on the outer peripheral wall of the electric machine and sandwiching a seal member (828) between the fixing target and the fixing target by fixing the fixing target to the electric housing;
The outer peripheral surface of the electric machine is the outer peripheral surface of the fixed target in a state in which the fixed target is fixed to the electric machine housing and an air flow (Fb5) flowing in the axial direction from the electric machine housing toward the fixed target is generated. It is provided on the outer side of the seal holding portion in the radial direction so as to extend in the axial direction together with the target outer peripheral surface (90a) and to be away from the target outer peripheral surface in the radial direction (RD) of the rotation axis. rotating electric machine.

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