WO2019131425A1

WO2019131425A1 - Motor unit

Info

Publication number: WO2019131425A1
Application number: PCT/JP2018/046958
Authority: WO
Inventors: 慶介福永; 隼人中間
Original assignee: 日本電産株式会社
Priority date: 2017-12-28
Filing date: 2018-12-20
Publication date: 2019-07-04
Also published as: CN111512525A

Abstract

This motor unit comprises: a motor having a rotor rotating about a motor shaft; a housing for storing the motor; and a flexible linear member extending along an outer circumferential surface of the housing. A housing member has a housing body for storing the motor, and a plate-like lid portion. The housing body is provided with a window portion. The lid member covers the window portion from the outside of the housing body. The lid member is provided with a holding portion for holding the linear member.

Description

Motor unit

The present invention relates to a motor unit.

In recent years, development of a motor unit for vehicles which unitized a motor and a reduction gear has been actively carried out. An electrical wire and a linear member such as a hose for cooling are connected to such a motor unit, and are wound around the motor unit. For example, Japanese Patent Laid-Open Publication No. 2009-177968 describes a structure in which a sensor harness for resolver communication extends from a housing in a motor provided with a resolver for detecting a rotational angle of a rotor.

Japanese Patent Publication: Japanese Patent Application Publication No. 2009-177968

The linear members connected to the motor unit may flicker due to vehicle vibrations. For this reason, the linear member is fixed inside the vehicle via a holding member such as a bracket. Adoption of such a structure not only increases the number of parts required for the bracket and its fixing structure, but also increases the manufacturing cost due to the increase of the fixing process.

SUMMARY OF THE INVENTION In view of the above-described problems, one aspect of the present invention aims to provide a motor unit capable of holding a linear member with a simple structure and suppressing rattling of the linear member.

One aspect of the motor unit of the present invention is a motor having a rotor that rotates about a motor shaft, a housing that accommodates the motor, and a flexible linear wound around the outer peripheral surface of the housing. And a member. The housing member has a housing main body for housing the motor, and a plate-like lid member. The housing body is provided with a window. The lid member covers the window from the outside of the housing body. The lid member is provided with a holding portion for holding the linear member.

According to one aspect of the present invention, there is provided a motor unit capable of holding a linear member with a simple structure and suppressing flapping of the linear member.

FIG. 1 is a conceptual view of a motor unit according to one embodiment. FIG. 2 is a perspective view of a motor unit according to an embodiment. FIG. 3 is an exploded view of the housing of one embodiment. FIG. 4 is a side view of the motor unit of one embodiment. FIG. 5 is a side view of the motor unit of one embodiment.

Hereinafter, a motor unit according to an embodiment of the present invention will be described with reference to the drawings. The scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present invention.

In the following description, the direction of gravity is defined and described based on the positional relationship when the motor unit 1 is mounted on a vehicle located on a horizontal road surface. In the drawings, an XYZ coordinate system is shown as a three-dimensional orthogonal coordinate system as appropriate. In the XYZ coordinate system, the Z-axis direction indicates the vertical direction (that is, the vertical direction), the + Z direction is the upper side (opposite the gravity direction), and the -Z direction is the lower side (gravity direction). The X-axis direction is a direction orthogonal to the Z-axis direction, and indicates the front-rear direction of the vehicle on which the motor unit 1 is mounted. The + X direction is the vehicle front, and the −X direction is the vehicle rear. However, the + X direction may be the rear of the vehicle and the −X direction may be the front of the vehicle. The Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction, and indicates the width direction (left-right direction) of the vehicle, the + Y direction is the vehicle left, and the -Y direction is the vehicle right It is. However, when the + X direction is the rear of the vehicle, the + Y direction may be the right of the vehicle and the −Y direction may be the left of the vehicle. That is, regardless of the direction of the X axis, the + Y direction is simply one side in the vehicle left-right direction, and the −Y direction is the other side in the vehicle left-right direction.

Unless otherwise noted in the following description, the direction (Y-axis direction) parallel to the motor axis J2 of the motor 2 is simply referred to as “axial direction”, and the radial direction centered on the motor axis J2 is simply referred to as “radial direction”. The circumferential direction around the motor axis J2, that is, around the axis of the motor axis J2, is simply referred to as "circumferential direction". However, the above-mentioned "parallel direction" also includes a substantially parallel direction.

Hereinafter, a motor unit (electric drive device) 1 according to an exemplary embodiment of the present invention will be described based on the drawings.
FIG. 1 is a conceptual view of a motor unit 1 according to an embodiment. FIG. 2 is a perspective view of the motor unit 1. In addition, FIG. 1 is a conceptual diagram to the last, and arrangement | positioning and the dimension of each part are not necessarily the same as actual.

The motor unit 1 is mounted on a vehicle having a motor as a power source such as a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHV), an electric vehicle (EV), and used as the power source.

As shown in FIG. 1, the motor unit 1 includes a motor (main motor) 2, a gear portion 3, a housing 6, oil O contained in the housing 6, an inverter unit (control portion) 8, and parking And a mechanism 7.

As shown in FIG. 1, the motor 2 includes a rotor 20 rotating around a motor axis J 2 extending in the horizontal direction, and a stator 30 located radially outward of the rotor 20. An interior of the housing 6 is provided with an accommodation space 80 for accommodating the motor 2 and the gear portion 3. The housing space 80 is divided into a motor chamber 81 for housing the motor 2 and a gear chamber 82 for housing the gear portion 3.

<Motor>
The motor 2 is accommodated in a motor chamber 81 of the housing 6. The motor 2 includes a rotor 20, a stator 30 located radially outward of the rotor 20, and a rotation angle sensor 9 for detecting the rotation angle of the rotor 20. The motor 2 is an inner rotor type motor including a stator 30 and a rotor 20 rotatably disposed inside the stator 30.

The rotor 20 rotates by supplying power to the stator 30 from a battery (not shown). The rotor 20 has a shaft (motor shaft) 21, a rotor core 24, and a rotor magnet (not shown). The rotor 20 (i.e., the shaft 21, the rotor core 24, and the rotor magnet) rotates about a horizontally extending motor axis J2. The torque of the rotor 20 is transmitted to the gear portion 3.

The shaft 21 extends around a motor axis J2 extending in the horizontal direction and the width direction of the vehicle. The shaft 21 rotates about the motor axis J2. The shaft 21 is a hollow shaft provided with a hollow portion 22 having an inner circumferential surface extending along the motor axis J2.

The shaft 21 extends across the motor chamber 81 and the gear chamber 82 of the housing 6. One end of the shaft 21 protrudes toward the gear chamber 82. A first gear 41 is fixed to an end of the shaft 21 projecting into the gear chamber 82.

The rotor core 24 is configured by laminating silicon steel plates. The rotor core 24 is a cylindrical body extending along the axial direction. A plurality of rotor magnets (not shown) are fixed to the rotor core 24. The plurality of rotor magnets are arranged along the circumferential direction with the magnetic poles alternately.

The stator 30 surrounds the rotor 20 from the radially outer side. The stator 30 has a stator core 32, a coil 31, and an insulator (not shown) interposed between the stator core 32 and the coil 31. The stator 30 is held by the housing 6. The stator core 32 has a plurality of magnetic pole teeth (not shown) radially inward from the inner circumferential surface of the annular yoke. A coil wire is wound around the pole teeth. The coil wire wound around the pole teeth constitutes a coil 31. The coil wire is connected to the inverter unit 8 via a bus bar (not shown). The coil 31 has a coil end 31 a protruding from the axial end surface of the stator core 32. The coil end 31 a protrudes in the axial direction more than the end of the rotor core 24 of the rotor 20. The coil end 31 a protrudes on both sides in the axial direction with respect to the rotor core 24.

The rotation angle sensor 9 detects the rotation angle of the rotor 20. In the present embodiment, the rotation angle sensor 9 is, for example, a VR (Variable Reluctance) resolver. The rotation angle sensor 9 has a resolver rotor (not shown) fixed to the shaft 21 and a resolver stator (not shown) fixed to the housing 6 and surrounding the resolver rotor from the radially outer side. The rotation angle sensor 9 is connected to the inverter unit 8 via a signal line 11 (see FIG. 4). The rotation angle sensor 9 transmits information on the rotation angle of the rotor 20 to the inverter unit 8 via the signal line 11.

<Gear part>
The gear portion 3 is accommodated in a gear chamber 82 of the housing 6. The gear portion 3 is connected to the shaft 21 on one side in the axial direction of the motor shaft J2. The gear portion 3 has a reduction gear 4 and a differential device 5. The torque output from the motor 2 is transmitted to the differential 5 via the reduction gear 4.

<Reduction gear>
The reduction gear 4 is connected to the rotor 20 of the motor 2. The reduction gear 4 has a function of reducing the rotational speed of the motor 2 and increasing the torque output from the motor 2 according to the reduction ratio. The reduction gear 4 transmits the torque output from the motor 2 to the differential 5.

The reduction gear 4 has a first gear (intermediate drive gear) 41, a second gear (intermediate gear) 42, a third gear (filed drive gear) 43, and an intermediate shaft 45. The torque output from the motor 2 is transmitted to the ring gear (gear) 51 of the differential 5 through the shaft 21 of the motor 2, the first gear 41, the second gear 42, the intermediate shaft 45 and the third gear 43. It is transmitted. The gear ratio of each gear, the number of gears, etc. can be variously changed according to the required reduction ratio. The reduction gear 4 is a reduction gear of a parallel axis gear type in which axes of the respective gears are arranged in parallel.

The first gear 41 is provided on the outer peripheral surface of the shaft 21 of the motor 2. The first gear 41 rotates with the shaft 21 about the motor axis J2. The intermediate shaft 45 extends along an intermediate axis J4 parallel to the motor axis J2. The middle shaft 45 rotates around the middle axis J4. The second gear 42 and the third gear 43 are provided on the outer peripheral surface of the intermediate shaft 45. The second gear 42 and the third gear 43 are connected via an intermediate shaft 45. The second gear 42 and the third gear 43 rotate around the intermediate shaft J4. The second gear 42 meshes with the first gear 41. The third gear 43 meshes with the ring gear 51 of the differential device 5. The third gear 43 is located on the side of the partition wall 61 c with respect to the second gear 42.

<Differential device>
The differential device 5 is connected to the motor 2 via the reduction gear 4. The differential 5 is a device for transmitting the torque output from the motor 2 to the wheels of the vehicle. The differential device 5 has a function of transmitting the same torque to the axles 55 of the left and right wheels while absorbing the speed difference between the left and right wheels when the vehicle is turning. The differential 5 has a ring gear 51, a gear housing (not shown), a pair of pinion gears (not shown), a pinion shaft (not shown), and a pair of side gears (not shown).

The ring gear 51 rotates about a differential axis J5 parallel to the motor axis J2. The torque output from the motor 2 is transmitted to the ring gear 51 via the reduction gear 4. That is, the ring gear 51 is connected to the motor 2 through another gear.

<Parking mechanism>
In the electric vehicle, there is no braking mechanism for applying a brake to the vehicle other than the side brakes, so the motor unit 1 needs the parking mechanism 7.

As shown in FIG. 1, the parking mechanism 7 moves between the teeth of the parking gear 71 fixed to the intermediate shaft 45 and rotating around the intermediate shaft J4 with the intermediate shaft 45 and rotates the parking gear 71. It has the rotation prevention part 72 to block, and the parking motor 73 which drives the rotation prevention part 72. FIG. During the operation of motor 2, rotation prevention unit 72 retracts from parking gear 71. On the other hand, when the shift lever is at the parking position, the parking motor 73 moves the rotation preventing portion 72 between the teeth of the parking gear 71 to prevent the parking gear 71 from rotating.

<Housing>
As shown in FIG. 1, the motor 2 and the gear portion 3 are housed in a housing space 80 provided inside the housing 6. The housing 6 holds the motor 2 and the gear portion 3 in the housing space 80. The housing 6 has a partition wall 61c. The housing space 80 of the housing 6 is divided into a motor chamber 81 and a gear chamber 82 by a partition wall 61 c. The motor 2 is accommodated in the motor chamber 81. The gear chamber 3 accommodates the gear portion 3 (i.e., the reduction gear 4 and the differential 5).

An oil reservoir P in which oil O is accumulated is provided in a lower region in the accommodation space 80. In the present embodiment, the bottom 81 a of the motor chamber 81 is located above the bottom 82 a of the gear chamber 82. Further, a partition wall opening 68 is provided in the partition wall 61 c that divides the motor chamber 81 and the gear chamber 82. The partition opening 68 brings the motor chamber 81 and the gear chamber 82 into communication with each other. The partition opening 68 moves the oil O accumulated in the lower region in the motor chamber 81 to the gear chamber 82.

As shown in FIG. 2, the housing 6 includes a first housing member 61, a second housing member 62, a third housing member 63, and a lid member 64. The second housing member 62 is located on one side in the axial direction of the first housing member 61. The third housing member 63 and the lid member 64 are located on the other axial side of the first housing member 61.

FIG. 3 is an exploded view of the housing 6.
The first housing member 61 has a cylindrical peripheral wall portion 61 a surrounding the motor 2 from the radial outer side, and a side plate portion 61 b located on one side in the axial direction of the peripheral wall portion 61 a. A space inside the peripheral wall portion 61 a constitutes a motor chamber 81. The side plate portion 61b has a partition wall 61c and a projecting plate portion 61d. The partition wall 61c covers an opening on one side in the axial direction of the peripheral wall portion 61a. In addition to the partition opening 68 described above, the partition 61 c is provided with an insertion hole 61 f through which the shaft 21 of the motor 2 is inserted. The side plate portion 61b has a partition wall 61c and a projecting plate portion 61d which protrudes outward in the radial direction with respect to the peripheral wall portion 61a. The protruding plate portion 61d is provided with a first axle passage hole 61e through which a drive shaft (not shown) supporting the wheels passes.

The third housing member 63 is fixed to the peripheral wall 61 a of the first housing member 61. The third housing member 63 closes the opening of the cylindrical first housing member 61. The third housing member 63 is provided with a window 63 c penetrating in the axial direction.

The first housing member 61 and the third housing member 63 constitute a housing main body 69 for housing the motor 2. That is, the housing 6 has a housing body 69. Inside the housing main body 69, a motor chamber 81 is provided. The housing main body 69 is provided with a window 63 c. The window 63 c penetrates the inside and the outside of the housing body 69.

The lid member 64 is plate-shaped. The lid member 64 is manufactured by press processing. The lid member 64 is fixed to the third housing member 63. The lid member 64 covers the window 63 c from the outside of the housing main body 69.

The second housing member 62 is fixed to the side plate portion 61 b of the first housing member 61. The shape of the second housing member 62 is a concave shape that opens to the side plate portion 61 b side. The opening of the second housing member 62 is covered by the side plate portion 61 b. A space between the second housing member 62 and the side plate portion 61 b constitutes a gear chamber 82 accommodating the gear portion 3. The second housing member 62 is provided with a second axle passage hole 62e. The second axle passage hole 62e overlaps the first axle passage hole 61e when viewed in the axial direction.

<Oil>
As shown in FIG. 1, the oil O circulates in an oil passage 90 provided in the housing 6. The oil path 90 is a path of oil O which supplies the oil O from the oil reservoir P to the motor 2. The oil passage 90 circulates the oil O to cool the motor 2.
The oil O is used to lubricate the reduction gear 4 and the differential gear 5. The oil O is also used for cooling the motor 2. The oil O accumulates in the lower region (i.e., oil reservoir P) in the gear chamber 82. It is preferable to use an oil O equivalent to a low viscosity lubricating oil for automatic transmission (ATF: Automatic Transmission Fluid) in order to perform the functions of a lubricating oil and a cooling oil.

<Oil path>
As shown in FIG. 1, an oil passage 90 is provided in the housing 6. The oil passage 90 is located in the housing space 80 in the housing 6. The oil passage 90 is configured to straddle the motor chamber 81 and the gear chamber 82 of the accommodation space 80. The oil passage 90 is a path of oil O that guides the oil O from the oil reservoir P on the lower side of the motor 2 (that is, the lower region in the accommodation space 80) through the motor 2 to the oil reservoir P on the lower side of the motor 2 again. It is.

In the present specification, the “oil passage” means a passage of oil O circulating in the storage space 80. Therefore, the "oil path" is not only a "flow path" that forms a steady flow of oil in one direction in a steady manner, but also a path (for example, a reservoir) for temporarily retaining oil and dripping oil It is a concept that also includes the route.

The oil passage 90 has a first oil passage 91 passing through the inside of the motor 2 and a second oil passage 92 passing through the outside of the motor 2. The oil O cools the motor 2 from the inside and the outside in the first oil passage 91 and the second oil passage 92.

(First oil path)
As shown in FIG. 1, in the first oil passage 91, the oil O is scraped up from the oil reservoir P by the differential device 5 and temporarily stored in the first reservoir 93. Led to The oil O is given a centrifugal force associated with the rotation of the rotor 20 inside the rotor 20. Thus, the oil O is uniformly diffused toward the stator 30 surrounding the rotor 20 from the radial outer side, and cools the stator 30.

The oil O that has reached the stator 30 removes heat from the stator 30. The oil O which has cooled the stator 30 is dropped downward, and is accumulated in the lower region in the motor chamber 81. The oil O accumulated in the lower region in the motor chamber 81 moves to the gear chamber 82 through the partition opening 68 provided in the partition 61 c.

(Second oil path)
As shown in FIG. 1, the oil O is pulled up from the oil reservoir P to the upper side of the motor 2 in the second oil passage 92 and supplied to the motor 2. The oil O supplied to the motor 2 takes heat from the stator 30 while cooling along the outer peripheral surface of the stator 30 to cool the motor 2. The oil O transmitted along the outer peripheral surface of the stator 30 drips downward and accumulates in the lower region in the motor chamber 81. The oil O of the second oil passage 92 merges with the oil O of the first oil passage 91 in the lower region of the motor chamber 81. The oil O accumulated in the lower region in the motor chamber 81 moves to the lower region (i.e., the oil reservoir P) in the gear chamber 82 through the partition opening 68.

A pump 96 is provided in the second oil passage 92. The pump 96 circulates the oil O in the second oil passage 92. The pump 96 is an electric pump driven by electricity. The pump 96 is provided on the outer peripheral surface of the housing 6. The pump 96 has a pump motor 96m. The pump 96 sucks up the oil O from the oil reservoir P via the first flow passage 92 a, and the motor 2 via the second flow passage 92 b, the cooler 97, the third flow passage 92 c and the second reservoir 98. Supply to

A cooler 97 is provided in the second oil passage 92. The cooler 97 cools the oil O in the second oil passage 92. The cooler 97 is provided on the outer peripheral surface of the housing 6. Connected to the cooler 97 is a cooling water pipe 97j that allows the cooling water cooled by a radiator (not shown) to pass. The oil O passing through the inside of the cooler 97 is cooled by heat exchange with the cooling water passing through the cooling water pipe 97j. An inverter unit 8 is provided in the path of the cooling water pipe 97j. The cooling water passing through the cooling water pipe 97j cools the inverter unit 8.

The second oil passage 92 is provided with a second reservoir 98. The second reservoir 98 is located in the motor chamber 81 of the accommodation space 80. The second reservoir 98 temporarily stores the oil pulled up from the oil reservoir P to the upper side of the motor 2 by the pump 96. The second reservoir 98 is located above the motor. The second reservoir 98 has a plurality of outlets 98a. The oil O accumulated in the second reservoir 98 is supplied to the motor 2 from each outlet 98 a. The oil O flowing out from the outlet 98 a of the second reservoir 98 flows from the upper side to the lower side along the outer peripheral surface of the motor 2 to remove the heat of the motor 2. Thereby, the whole motor 2 can be cooled.

The oil O which has cooled the coil 31 is dropped downward, and is accumulated in the lower region in the motor chamber 81. The oil O accumulated in the lower region in the motor chamber 81 moves to the gear chamber 82 through the partition opening 68 provided in the partition 61 c.

<Inverter unit (control unit)>
FIG. 4 is a side view of the motor unit 1.
The inverter unit 8 is fixed to the outer peripheral surface of the housing 6 facing radially outward. Inverter unit 8 is electrically connected to motor 2 via a bus bar (not shown). The bus bar unit 8 controls the rotation of the motor 2.

As shown in FIG. 4, the motor unit 1 includes a plurality of flexible linear members (the signal line 11, the power supply line 12 and the hose 13) which are wound along the outer peripheral surface of the housing 6.

The signal line 11 connects the rotation angle sensor 9 and the inverter unit 8. The signal line 11 is an example of a flexible linear member. The signal line 11 transmits the detection result of the rotation angle sensor 9 to the inverter unit 8. The inverter unit 8 controls the current supplied to the motor 2 based on the rotation angle of the rotor 20 detected by the rotation angle sensor 9.

The power supply line 12 connects the inverter unit 8 and the pump 96. The power supply line 12 is an example of a flexible linear member. The power supply line 12 supplies power from the inverter unit 8 to the pump 96. More specifically, inverter unit 8 supplies power to pump motor 96m (see FIG. 1) of pump 96 to control the drive of pump 96. The signal line 11 and the power supply line 12 are bundled by a first binding band 66.

The hose 13 connects the cooler 97 and the inverter unit 8. The hose 13 is an example of a flexible linear member. The oil O passing through the inside of the cooler 97 and the refrigerant (cooling water) for cooling the inverter unit 8 flow through the hose 13. The hose 13 is a part of the cooling water pipe 97j. As shown in FIG. 1, the cooling water pipe 97 j has a pipeline that passes from the radiator (not shown) through the inverter unit 8 and the cooler 97 and returns to the radiator. The cooling water pipe 97j cools the oil O in the inverter unit 8 and the cooler 97 by the refrigerant flowing inside. The hose 13 corresponds to a pipe line from the inverter unit 8 to the cooler 97 of the cooling water pipe 97 j.

As shown in FIG. 4, the inverter unit 8 has an opposing surface 8 f facing the outer peripheral surface of the housing 6 and a connecting surface 8 a orthogonal to the opposing surface 8 f. The connection surface 8a extends along a plane orthogonal to the axial direction.

The first terminal connection portion 8b to which the signal line 11 is connected, the second terminal connection portion 8c to which the power supply line 12 is connected, and the hose connection portion 8d to which the hose 13 is connected to the connection surface 8a; Is placed.

The first terminal connection portion 8 b and the second terminal connection portion 8 c are arranged along a ridge line of the connection surface 8 a and the opposing surface 8 f. That is, the first terminal connection portion 8 b and the second terminal connection portion 8 c are arranged along the outer peripheral surface of the housing 6 in the connection surface 8 a. According to the present embodiment, the signal line 11 and the power supply line 12 can be arranged close to each other in the vicinity of the inverter unit 8. Thereby, the signal line 11 and the power supply line 12 can be bundled by the first binding band 66. As a result, the rattling between the signal line 11 and the power supply line 12 can be suppressed.
The hose connection portion 8 d of the present embodiment is not disposed along the outer peripheral surface of the housing 6. However, the hose connection portion 8 d may be arranged side by side along the outer peripheral surface of the housing 6 together with the first terminal connection portion 8 b and the second terminal connection portion 8 c. In this case, the first binding band 66 can bundle the hose 13 together with the signal line 11 and the power supply line 12.

As shown in FIG. 4, the lid member 64 of the housing 6 is provided with a plurality of second binding bands (banding band, holding portion) 65 for holding the signal line 11, the power source line 12 and the hose 13.

The lid member 64 is provided with a plurality of protrusions 64 a that protrude radially outward from the peripheral edge of the lid member 64. The plurality of protrusions 64 a are provided with through holes 64 b penetrating in the axial direction. That is, the lid member 64 is provided with a plurality of through holes 64 b. The second binding bands 65 are respectively passed through the through holes 64 b. The plurality of second binding bands 65 are respectively passed through the through holes 64 b and wound around at least one of the signal line 11, the power supply line 12 and the hose 13. Thereby, the second binding band 65 fixes the signal line 11, the power supply line 12 and the hose 13 to the lid member 64.

In the present embodiment, the number of the protrusions 64a, the through holes 64b, and the second binding bands 65 is four. In the present embodiment, two second bundling bands 65 out of the four second bundling bands 65 bundle and hold the power supply line 12 and the hose 13. The power supply line 12 and the hose 13 extend from the connection surface 8 a of the inverter unit 8 toward the lower side of the motor 2. Also, the power supply line 12 and the hose 13 are routed along a common path along the peripheral edge of the lid member 64. The power supply wire 12 and the hose 13 are bundled and held by the second binding band 65 at a portion around the periphery of the lid member 64. Therefore, the number of second binding bands 65 can be suppressed, and the time required for the process of fixing by the second binding bands 65 can be shortened.

On the other hand, the signal line 11 is connected to the upper surface of the housing 6. For this reason, the signal line 11 has a small area surrounded by the same path as the power supply line 12 and the hose 13. The signal line 11 is independently fixed to the lid member 64 by the second binding band 65 positioned on the uppermost side among the plurality of second binding bands 65.
In the present embodiment, the signal line 11 and the power supply line 12 are bundled by the first binding band 66. However, the signal line 11 and the power supply line 12 may be bundled and fixed by the second binding band 65 by adjusting the arrangement of the signal line 11 and the power supply line 12.

According to the present embodiment, the plate-like lid member 64 is provided with the second binding band (holding portion) 65 for holding the linear member (at least one of the signal line 11, the power source line 12 and the hose 13). Be The lid member 64 is in the form of a plate, so that processing is easy. More specifically, by manufacturing the lid member 64 by press processing, the through hole 64b through which the second binding band 65 passes can be easily provided without increasing the number of manufacturing processes. For this reason, according to the motor unit 1 of the present embodiment, it is possible to hold the linear member with a simple structure and to suppress the rattling of the linear member.

<< Modification of lid member >>
FIG. 5 is a side view of a motor unit 101 provided with a lid member 164 of a modified example. The lid member 164 of this modification mainly differs in the configuration of the holding portion 165 from the above-described embodiment. In addition, about the component of the aspect same as the above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

The lid member 164 is provided with a plurality of holding portions 165 for holding the linear members (at least one of the signal line 11, the power supply line 12 and the hose 13).

In the present modification, the lid member 164 and the holding portion 165 are a single member. The lid member 164 and the holding portion 165 have a plate shape. The lid member 164 and the holding portion 165 are made of a metal material. The lid member 164 and the holding portion 165 are manufactured by press processing.

The holding portion 165 protrudes radially outward from the peripheral edge of the lid member 164. The holding portion 165 extends in a rectangular shape outward in the radial direction. The holding portion 165 is bent toward the rear of the sheet of FIG. Thus, the holding portion 165 is wound around the linear member (at least one of the signal wire 11, the power supply wire 12 and the hose 13).

The process of winding the holding portion 165 around the linear member is performed by a worker performing the assembly process. In the assembly process, the worker arranges the linear members along the periphery of the lid member 164. At this stage, the holding portion 165 extends linearly along a plane perpendicular to the radial direction. Next, the worker bends the holding portion 165 so that the holding portion 165 is wound around the linear member. The linear member can be held by the lid member 164 through the above steps.

According to the present embodiment, the plate-like lid member 164 is provided with the holding portion 165 for holding the linear member (at least one of the signal line 11, the power supply line 12, and the hose 13). The holding portion 165 has a plate shape and is thus easily processed. Therefore, by bending the holding portion 165, the linear member can be fixed to the lid member 164 without increasing the number of parts. That is, according to the motor unit 101 of the present embodiment, it is possible to hold the linear member with a simple structure and suppress the rattling of the linear member.

Although the embodiments and modifications of the present invention have been described above, the respective configurations and combinations thereof in the embodiments are merely examples, and additions, omissions, replacements, and configurations of the configurations are possible within the scope of the present invention. Other modifications are possible. Further, the present invention is not limited by the embodiments.

1, 101: motor unit, 2: motor, 6: housing, 8: inverter unit (control unit), 8a: connection surface, 8b: first terminal connection portion, 8c: second terminal connection portion, 9: rotation Angle sensor 11 Signal line 12 Power line 13 Hose 20 Rotor

63c Window portion

64, 164 Lid member 64b Through hole 65 Second bundling band (banding band, holding Parts), 69: housing body, 90: oil passage, 96: pump, 97: cooler, 165: holding portion, J2: motor shaft, O: oil

Claims

A motor having a rotor that rotates about a motor shaft;
A housing for housing the motor;
A flexible linear member disposed along the outer peripheral surface of the housing;
The housing has a housing body for housing the motor, and a plate-like lid member.
The housing body is provided with a window,
The lid member covers the window from the outside of the housing body;
The lid member is provided with a holder for holding the linear member,
Motor unit.
The lid member is provided with a through hole penetrating in the thickness direction,
The holding portion is a binding band which is passed through the through hole and wound around the linear member.
The motor unit according to claim 1.
The lid member and the holding portion are a single member,
The holding portion extends from the periphery of the lid member and wraps around the linear member to hold the linear member.
The motor unit according to claim 1.
A control unit fixed to an outer peripheral surface of the housing and controlling rotation of the motor;
The motor has a rotation angle sensor that detects a rotation angle of the rotor,
The linear member is a signal line that connects the rotation angle sensor and the control unit and transmits the detection result of the rotation angle sensor to the control unit.
The motor unit according to any one of claims 1 to 3.
A plurality of said linear members are provided;
The housing is provided with an oil passage for circulating oil and cooling the motor;
The outer peripheral surface of the housing is provided with a pump for circulating the oil in the oil passage,
At least one of the plurality of linear members is a power supply line that connects the control unit and the pump and supplies power from the control unit to the pump.
The motor unit according to claim 4.
The control unit has a connection surface on which a first terminal connection unit to which the signal line is connected and a second terminal connection unit to which the power supply line is connected are disposed.
The first terminal connection portion and the second terminal connection portion are arranged along the outer peripheral surface of the housing at the connection surface.
The motor unit according to claim 5.
A plurality of said linear members are provided;
The housing is provided with an oil passage for circulating oil and cooling the motor;
A cooler for cooling the oil in the oil passage is provided on an outer peripheral surface of the housing.
At least one of the plurality of linear members is a hose that connects the cooler and the control unit, and through which the oil passing through the cooler and the refrigerant that cools the control unit flow.
A motor unit according to any one of claims 4 to 6.
The holding unit bundles and holds a plurality of the linear members.
A motor unit according to any one of claims 5 to 7.