JP2018029478A - Rotary electric machine for internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine for an internal combustion engine that can separate a wiring harness from a stator.SOLUTION: A stator 31 comprises a stator core 32 and a stator coil 33. A rotary electric machine 10 has a connection member 41. The connection member 41 has a terminal support part 42 that supports a connection terminal for connection with the stator coil 33. The connection member 41 has an insertion part 43 that houses a sensor for detecting a rotational position. The connection member 41 has a connector 45. The connector 45 provides connection of a power line, and connection of a signal line. The connector 45 can be connected with a connector 51 provided on a wiring harness 15. The connector 45 enables a connection work between a coil end and the connection terminal without the wiring harness 15.SELECTED DRAWING: Figure 1

Description

Cross-reference of related applications

  This application is based on Japanese Patent Application No. 2015-212089 filed on Oct. 28, 2015, and the disclosure of the basic application is incorporated into this application by reference.

  The disclosure in this specification relates to a rotating electrical machine for an internal combustion engine.

  Patent Documents 1-4 disclose a rotating electrical machine for an internal combustion engine. A rotating electrical machine for an internal combustion engine has a long and flexible wire harness. An example of the wire harness is a power line for flowing an output current generated by the rotating electrical machine for the internal combustion engine and / or an input current for electrically operating the rotating electrical machine for the internal combustion engine. An example of a wire harness is a signal line for transmitting a signal detected by a rotational position sensor.

JP 2013-176175 A JP-A-2015-144564 JP2015-144552A JP2015-130785A JP 2014-36506 A

  In the configuration of the prior art, a long and flexible wire harness may interfere with work in the manufacturing process of the rotating electrical machine for the internal combustion engine. Moreover, it is necessary to arrange and hold a long and flexible wire harness at a predetermined position. Moreover, a wire harness may cause an accompanying technical subject like the oil leak described in patent document 1. FIG. In the above-mentioned viewpoints or other aspects not mentioned, there is a need for further improvements in rotating electrical machines for internal combustion engines.

  One object of the present disclosure is to provide a rotating electrical machine for an internal combustion engine that can separate a wire harness from a stator.

  Another object of the present disclosure is to provide a rotating electrical machine for an internal combustion engine in which the length of a wire harness laid on a stator is suppressed.

  Still another object of the present invention is to provide a rotating electrical machine for an internal combustion engine that is easy to manufacture.

  A rotating electrical machine for an internal combustion engine disclosed herein includes a stator core (32) disposed opposite to a rotor (21), a stator (31) having a stator coil (33) mounted on the stator core (32), and a stator. And a connecting member (41) for providing a part of a power line for current flowing in the stator coil. The connecting member is a resin connector having a resin terminal support (42) for supporting a connection terminal (61) connected to the coil end (33a) of the stator coil, and a power terminal (62) for a power line. (45) and a conductor power electrode (63) extending between the connection terminal (61) and the power terminal (62).

  According to the disclosed rotating electrical machine for an internal combustion engine, a part of the power line is provided by the connecting member. The connection member electrically connects the connection terminal and the power terminal by the power electrode. The connection terminal is supported by the terminal support part. Since the connecting member has a connector, a long and flexible wire harness can be separated. For example, in the manufacturing process of the rotating electrical machine for an internal combustion engine, the connection process between the coil end and the connection terminal can be easily performed by separating the wire harness from the connector.

  The disclosed embodiments of the present specification employ different technical means to achieve each purpose. The reference numerals in parentheses described in the claims and this section exemplify the correspondence with the embodiments described later, and are not intended to limit the technical scope. The objects, features, and advantages disclosed in this specification will become more apparent with reference to the following detailed description and accompanying drawings.

It is sectional drawing of the rotary electric machine which concerns on 1st Embodiment. It is a side view of the stator of a 1st embodiment. It is a top view of the stator of a 1st embodiment. It is a perspective view of the stator of 1st Embodiment. It is a disassembled perspective view of the stator of 1st Embodiment. It is a perspective view of the connector unit of a 1st embodiment. It is a perspective view of the connector unit of a 1st embodiment. It is the top view which developed the permanent magnet of a 1st embodiment. It is a wave form diagram which shows the sensor signal of 1st Embodiment. It is the top view which expand | deployed the permanent magnet of 2nd Embodiment. It is a wave form diagram which shows the sensor signal of 2nd Embodiment. It is the top view which expand | deployed the permanent magnet of 3rd Embodiment. It is a wave form diagram which shows the sensor signal of 3rd Embodiment. It is the top view which expand | deployed the permanent magnet of 4th Embodiment. It is a wave form diagram which shows the sensor signal of 4th Embodiment. It is a perspective view of the connector unit of 5th Embodiment. It is a perspective view of the connector unit of 5th Embodiment. It is sectional drawing of the rotary electric machine which concerns on 6th Embodiment. It is a fragmentary sectional view of the rotary electric machine which concerns on 7th Embodiment. It is sectional drawing which shows arrangement | positioning of the sensor of 7th Embodiment. It is sectional drawing which shows arrangement | positioning of the sensor of 8th Embodiment. It is sectional drawing which shows arrangement | positioning of the sensor of 9th Embodiment.

  A plurality of embodiments will be described with reference to the drawings. In embodiments, functionally and / or structurally corresponding parts and / or associated parts may be assigned the same reference signs or reference signs that differ by more than a hundred. For the corresponding parts and / or associated parts, the description of other embodiments can be referred to.

First Embodiment In FIG. 1, a rotating electrical machine for an internal combustion engine (hereinafter simply referred to as a rotating electrical machine 10) is a generator. The rotating electrical machine 10 is electrically connected to an electric circuit 11 including a rectifier circuit (AC / DC). The electric circuit 11 provides a single-phase power conversion circuit. An example of the use of the rotating electrical machine 10 is a generator connected to an internal combustion engine 12 for a vehicle. The rotating electrical machine 10 can be used for a motorcycle, for example.

  The electric circuit 11 rectifies AC power output from the rotating electrical machine 10 and provides a rectifier circuit that supplies power to an electric load including a battery. The electric circuit 11 provides a signal processing circuit that receives a reference position signal for ignition control supplied from the rotating electrical machine 10. The electric circuit 11 may additionally provide an ignition controller that performs ignition control.

  The rotating electrical machine 10 is assembled to the internal combustion engine 12. The internal combustion engine 12 includes a body 13 and a rotary shaft 14 that is rotatably supported by the body 13 and rotates in conjunction with the internal combustion engine 12. The rotating electrical machine 10 is assembled to the body 13 and the rotating shaft 14. The body 13 is a structure such as a crankcase or a transmission case of the internal combustion engine 12. The rotating shaft 14 is a crankshaft of the internal combustion engine 12 or a rotating shaft interlocking with the crankshaft. In the drawing, the rotating shaft 14 extends in the vertical direction, but the rotating shaft 14 may extend in the horizontal direction. The body 13 includes a case 13a that indicates the rotation shaft 14 and a cover 13b that is attached to the case 13a. The case 13 a and the cover 13 b define and form a storage chamber for storing the rotating electrical machine 10.

  The rotating electrical machine 10 is an outer rotor type rotating electrical machine. The rotating electrical machine 10 includes a rotor 21 and a stator 31. In the following description, the term “axial direction” refers to a direction along the central axis when the rotor 21, the stator 31, or the stator core 32 is regarded as a cylinder. The term “radial direction” refers to a radial direction when the rotor 21, the stator 31, or the stator core 32 is regarded as a cylinder.

  The rotor 21 is a field element. The stator 31 is an armature. The entire rotor 21 is cup-shaped. The rotor 21 is connected to the end of the rotating shaft 14. The rotor 21 rotates together with the rotating shaft 14. The rotor 21 has a cup-shaped rotor core 22. The rotor core 22 provides a yoke for a permanent magnet described later. The rotor core 22 is made of a magnetic metal. The rotor 21 has a permanent magnet 23 disposed on the inner surface of the rotor core 22. The rotor 21 provides a field by a permanent magnet 23.

  The stator 31 is an annular member. The stator 31 is disposed so as to face the rotor 21. The stator 31 has a stator core 32. The stator core 32 is made of magnetic metal. The stator core 32 is fixed to the body 13 of the internal combustion engine 12. The stator 31 has a stator coil 33 attached to a stator core 32. The stator coil 33 provides an armature winding. The stator coil 33 is a single-phase winding. The coil wire forming the stator coil 33 is a single wire conductor covered with an insulating coating. The coil wire is made of an aluminum-based metal such as aluminum or an aluminum alloy.

  The rotating electrical machine 10 includes a wire harness 15 that provides an electrical connection between the rotating electrical machine 10 and the electric circuit 11. The wire harness 15 includes a plurality of electric wires. The wire harness 15 includes a plurality of power lines that connect the stator coil 33 and the electric circuit 11. The electric circuit 11 is an external circuit to which a power line is connected. The electric power line supplies the electric circuit 11 with electric power induced in the stator coil 33 when the rotating electrical machine 10 functions as a generator. The wire harness 15 includes a signal line for a signal indicating the rotational position of the rotating electrical machine 10.

  The rotating electrical machine 10 includes a connection member 41 for providing an electrical connection between the rotating electrical machine 10 and the electric circuit 11. The connection member 41 connects between the rotating electrical machine 10 and the wire harness 15. The connection member 41 is a molded product made of an electrically insulating resin material. The connection member 41 has a plurality of electrical components. The electrical component includes a plurality of electrodes for providing an electrical connection. The electrode is provided by a plate-shaped metal plate called a bus bar or an electric wire. The electrodes include a power electrode for the power line and a signal electrode for the signal line. The signal line can include a power supply line and a ground line for supplying power for the sensor and circuit components. The signal electrode is also an electrode for the power supply line and the ground line. The electrical component includes a circuit component for configuring an electrical circuit. The circuit component includes a substrate and an element. At least a part of the electrical component may be insert-molded in the resin material forming the connection member 41.

  The connection member 41 is disposed along the end surface of the stator 31. The connection member 41 is disposed on one side of the stator 31 in the axial direction. The connection member 41 extends in a thin plate shape on the end surface of the stator 31. The connection member 41 protrudes radially outward from the end surface of the stator 31. The connection member 41 extends radially outward while avoiding interference with the rotor 21.

  The connection member 41 provides a part of a power line for outputting or inputting a current flowing through the stator coil 33. The connection member 41 connects a power line. The connection member 41 has a terminal support portion 42 for supporting a connection terminal connected to the stator coil 33. The terminal support portion 42 is disposed on the end surface of the stator core 32. The terminal support portion 42 is disposed in a through hole provided in the stator core 32. The terminal support portion 42 extends through the stator core 32. The terminal support portion 42 is exposed on the other end surface of the stator core 32 in the axial direction. The terminal support portion 42 positions the connection terminal on the other end surface of the stator core 32 in the axial direction.

  The connection member 41 provides a part of a signal line for transmitting a signal indicating the rotational position. The connection member 41 connects a signal line. The connection member 41 has an insertion portion 43. The insertion portion 43 is a member that positions the connection member 41 at a predetermined position by contacting the stator 31. The insertion portion 43 is formed as a protrusion that extends from the connection member 41 toward the stator 31. The insertion portion 43 is in contact with the stator core 32 and / or the insulator 34. In addition, the insertion portion 43 can accommodate a sensor described later. The insertion part 43 is also called a sensor part for positioning the sensor at a specified position.

  The connection member 41 has a through portion 44 that extends through the body 13. The through portion 44 is disposed between the case 13a and the cover 13b. The connecting member 41 is fixed to the body 13 by the through portion 44 being sandwiched between the case 13a and the cover 13b.

  The connection member 41 has a connector 45 for electrical connection. The connector 45 is also called a first connector or a fixed connector. The connector 45 is integrated with the connection member 41 so as not to be separated. The connector 45 is a resin member. The connector 45 is paired with the connector 51. The connector 45 can be connected to and disconnected from the connector 51. The connectors 45 and 51 have a snap-fit mechanism that couples them using the elasticity of resin. The connector 45 is connected to the connector 51 to maintain a plurality of connector terminals built in the connector 45 in an electrically connected state.

  The connector 45 has a plurality of male terminals. The connector 45 is supported by the body 13. It can be said that the connector 45 is sandwiched between the case 13a and the cover 13b. The connector 45 is opened outside the storage chamber in which the rotating electrical machine 10 is stored. In this embodiment, the housing chamber is partitioned and formed by the body 13. Therefore, the connector 45 is opened outside the body 13. The connector 45 is disposed so as to be connectable to the connector 51 outside the body 13.

  The connector 51 has a plurality of female terminals. The connector 51 is provided at the end of the wire harness 15. The connector 51 is also called a second connector or a wire side connector. Connector 45 provides a receptacle for receiving connector 51. The connector 51 provides a jack that is inserted into the connector 45.

  The connector 45 and the connector 51 have a plurality of connector terminals to be connected. The plurality of connector terminals include a plurality of power terminals for power lines and a plurality of signal terminals for signal lines. The connector 45 and the connector 51 enable connection of a plurality of wires by one touch. The connector 45 and the connector 51 are separable. By providing the connector 45 on the connection member 41, the stator 31 does not have a wire harness that cannot be separated from the stator 31.

  The connector 51 is fixed to the body 13. The connector 51 has a bracket that extends toward the body 13. The connector 51 is fixed to the body 13 by a fixing member 52 such as a bolt. This configuration suppresses vibration and displacement between the connector 45 and the connector 51 and contributes to stable electrical connection.

  2 and 3, the stator 31 is an outer salient pole type stator. The stator core 32 has a plurality of magnetic poles 32a. The magnetic pole 32a is also called a tooth. An insulator 34 is disposed between the stator core 32 and the stator coil 33. The insulator 34 is made of an electrically insulating resin. The insulator 34 is provided on the stator core 32. The insulator 34 is also called a bobbin. A portion of the insulator 34 is positioned adjacent to the magnetic pole 32a to provide a bobbin flange. A part of the insulator 34 is disposed on both sides in the axial direction of the magnetic pole 32a. A part of the insulator 34 spreads so as to cover a part of the axial surface of the central annular portion of the stator core 32.

  The stator core 32 has a plurality of bolt holes for fixing the stator core 32 to the body 13. The connecting member 41 is disposed and fixed between two bolt holes adjacent in the circumferential direction. The connection member 41 extends on the end face of the stator 31 so as to occupy a predetermined circumferential range on the radially outer side.

  The insertion portion 43 is positioned between the two adjacent magnetic poles 32a. The insertion portion 43 is a protruding portion that can be called a rod shape or a cylindrical shape that extends along the axial direction of the stator 31. The insertion portion 43 is also a positioning member that defines the position of the connection member 41 in the circumferential direction by being disposed between two adjacent magnetic poles 32a. The insertion portion 43 provides contact between the connection member 41 and the stator 31, that is, the stator core 32. The insertion portion 43 suppresses deformation or movement of the connection member 41 by transmitting a load applied to the connector 45 in the circumferential direction and radial direction of the stator 31 to the stator 31. In this respect, the insertion portion 43 is a support portion that supports the connection member 41 with respect to the stator 31. The insertion portion 43 is also a height defining portion that defines the axial height of the connecting member 41 with respect to the stator 31. The insertion portion 43 can also be referred to as a connecting member that connects the connecting member 41 and the stator 31.

  The insertion part 43 accommodates the sensor 71. The sensor 71 is disposed so as to face the rotor 21. The sensor 71 outputs a signal indicating a reference position in the rotation direction by detecting a characteristic portion provided in the rotor 21. It can be said that the signal line transmits a signal indicating the reference position. The insertion part 43 supports the sensor 71 at a specified position. The sensor 71 is positioned so as to face the rotor 21. The sensor 71 outputs an electrical signal indicating the rotational position by detecting a magnetic feature provided on the rotor 21. In this embodiment, the magnetic feature is provided by a magnetic pole provided on the permanent magnet 23. The sensor 71 is provided by a Hall element that reacts to the magnetic flux of the permanent magnet 23.

  In FIG. 8, the permanent magnet 23 has a plurality of main magnetic poles 25 whose polarities change alternately. Further, the permanent magnet 23 has a sub magnetic pole 26 as a characteristic portion. The sub magnetic pole 26 forms a portion where the polarity does not change in the alternating period of the main magnetic pole 25. The portion formed by the sub magnetic pole 26 is also called a missing tooth portion. The sub magnetic pole 26 defines a reference position during one rotation of the rotor 21. The sub magnetic pole 26 can also be called a reference magnetic pole. The sensor 71 is positioned so as to pass over the main magnetic pole 25 and the sub magnetic pole 26 of the permanent magnet 23.

  FIG. 9 shows a waveform S <b> 1 of a signal obtained from the output of the sensor 71. The signal shown in the figure is a signal after waveform processing. The signal corresponds to the magnetic flux provided by the main pole 25 and the sub-pole 26. In this embodiment, the secondary magnetic pole 26 is missing the sixth falling and the seventh rising. The pulse width PW1 indicating the missing wave is sufficiently longer than other regular pulse widths PW0.

  The missing wave is detected by the electric circuit 11, for example. The electric circuit 11 provides a reference position detector that detects the reference position of the rotating shaft 14, that is, the reference position of the internal combustion engine 12. The missing wave is detected based on the pulse width indicated by the rising and falling edges of the waveform S1. For example, a characteristic pulse width indicating the reference position is determined based on a pulse width corresponding to the main magnetic pole 25 that is frequently detected. In this embodiment, a long pulse width indicating a missing wave is determined on the basis of the pulse width corresponding to the main magnetic pole 25. Thereby, the reference position of the rotational position is indicated. The reference position is used for ignition control of the internal combustion engine 12 and the like.

  The reference position is detected by detecting a pulse longer than the other pulses from the waveform, starting counting by the counter from the rising or falling edge, the preset rising or falling position, and the rotation speed, etc. A position obtained by adding or subtracting time calculated from various conditions is provided as a reference timing for ignition. The long pulse may be either H level or L level.

  Furthermore, a waveform that is not affected by the feature, that is, a normal waveform that is not missing, is mainly used for the calculation of the rotation speed. The rotational speed is calculated based on the number of pulses per unit time or the number of rising or falling edges. The ignition control device generates ignition electric power by controlling energization start and energization interruption of the ignition coil. The ignition control device performs energization start and / or energization interruption in synchronization with detection of the missing wave. For example, ignition in the internal combustion engine 12 is performed by the ignition control device starting energization of the ignition coil after the ignition control device senses the missing wave.

  Such control processing may be performed after a predetermined time has elapsed since the detection of the missing wave. Further, such control processing may be performed after a predetermined number of pulse waves are detected after a missing wave is detected and after a predetermined time has passed. In other words, in this embodiment, a waveform that can be used for two purposes, that is, detection of the reference position and detection of the rotational speed, is obtained from the waveform output from one sensor. According to this embodiment, a single sensor 71 can provide a rotation speed calculation signal and an ignition reference position signal.

  Returning to FIG. 2 and FIG. 3, the connection member 41 has an accommodating portion 46 for accommodating a circuit component. The accommodating part 46 is formed in a rectangular parallelepiped shape. The accommodating portion 46 has a box shape with one surface opened. An insertion portion 43 is provided on the bottom surface of the housing portion 46. The insertion portion 43 extends from the bottom surface of the housing portion 46 along the axial direction. As a result, the insertion portion 43 is disposed so as to be bridged between the accommodating portion 46 and the stator core 32. It can be said that the insertion portion 43 is disposed between the connection member 41 and the stator 31 in the axial direction of the stator 31.

  The connection member 41 has a leg portion 47 connected to the stator 31. The connection member 41 has a pair of leg portions 47 so that the entire connection member 41 has a substantially symmetrical shape. A cavity is provided between the pair of legs 47. The leg portion 47 extends radially inward from two adjacent corner portions of the accommodating portion 46. The leg portion 47 extends in the axial direction toward the central portion of the stator core 32. The leg 47 is L-shaped. The leg 47 extends so as to reach one end surface of the stator core 32. The plurality of leg portions 47 can be stably fixed to the stator 31.

  The penetrating portion 44 is provided between the connector 45 and the accommodating portion 46. A part of the penetrating part 44 may provide a part of the connector 45. The through portion 44 has a seal member 55. The seal member 55 is provided between the through portion 44 and the body 13. The seal member 55 seals between the body 13 and the through portion 44. Thereby, invasion of foreign matter from outside the body 13 into the body 13 is suppressed. Further, leakage of oil or the like from the body 13 to the outside of the body 13 is suppressed. The seal member 55 is provided by, for example, a rubber O-ring or packing having a round cross section.

  In FIG. 3, the other end face of the stator core 32 is shown. The terminal support portion 42 is exposed on the other end surface of the stator core 32. The connection member 41 has a pair of terminal support portions 42. The two terminal support portions 42 are separated from each other with a width comparable to the width of the connection member 41.

  The terminal support part 42 supports the connection terminal 61. The connection terminal 61 is also a part of the power line. In the drawing, a pair of connection terminals 61 is shown. The stator coil 33 is a single phase coil. Therefore, an electrical connection for the stator coil 33 is provided by the pair of connection terminals 61.

  The connection terminal 61 is a member that is electrically connected to the stator coil 33. The connection terminal 61 is electrically and mechanically connected to the coil end 33a. The connection terminal 61 has a shape suitable for electric resistance welding or projection welding. The coil end 33a and the connection terminal 61 are welded by projection welding. The coil end 33a and the connection terminal 61 can be connected by various methods such as solder connection or mechanical caulking connection. The connection portion between the coil end 33a and the connection terminal 61 may be covered with a protective resin. The protective resin is an electrically insulating resin.

  In FIG. 4, the connector 45 has a power terminal 62 and a signal terminal 72. The power terminal 62 is a terminal for energizing the current flowing through the stator coil 33. The power terminal 62 is a terminal for a power line. The signal terminal 72 is a terminal for transmitting a signal obtained from the sensor 71. The signal terminal 72 is a terminal for a signal line. The signal terminal 72 may be a terminal for a power supply line and a ground line.

  In FIG. 5, the connection member 41 has a fixing portion 48 provided at an end portion of the leg portion 47. The fixing part 48 is a part fixed to the stator core 32. The fixing portion 48 is bridged between the pair of leg portions 47. The fixing portion 48 is fixed to the stator core 32 by a fixing member 56 such as a screw. The terminal support portion 42 is provided by a columnar portion extending from the leg portion 47. The terminal support portion 42 extends from the end portion of the leg portion 47 so as to penetrate the stator core 32. The terminal support part 42 is cylindrical.

  The insertion portion 43 is disposed between the connector 45 and the leg portion 47 with respect to the radial direction of the stator 31. The insertion portion 43 suppresses undesirable deformation and breakage of the connection member 41 after the connection member 41 is fixed to the body 13 and before the connection member 41 is fixed to the body 13. For example, the insertion portion 43 prevents the connecting member 41 from having a cantilever structure with the leg portion 47 and the fixing portion 48 as support ends when the rotating electrical machine 10 is shipped and in the transport process.

  6 and 7 are perspective views of the connection member 41. FIG. The connecting member 41 is generally formed in an F shape. The accommodating part 46, the penetration part 44, and the connector 45 are arrange | positioned at the F-shaped vertical-bar part. Legs 47 are arranged at the upper corners of the F shape. A terminal support portion 42 is disposed on the upper horizontal bar portion of the F shape. An insertion portion 43 is disposed in the lower horizontal bar portion of the F shape.

  The connector 45 extends radially outward from the rectangular parallelepiped accommodating portion 46. The penetrating portion 44 is shaped so that its height gradually increases from the housing portion 46 toward the connector 45. The accommodating portion 46 has a sealing resin 58 that fills the box-shaped accommodating chamber. The sealing resin 58 is poured into the accommodating chamber in a flowable state after the circuit components are arranged in the accommodating chamber, and is cured after filling the accommodating chamber.

  A hard bush 57 is disposed in the fixing portion 48 in order to resist the tightening force by the fixing member 56. The stator core 32 is provided with a hole having an internal thread. The hole is provided by a nut formed directly in the stator core 32 or press-fitted into the stator core 32. The fixing portion 48 is fixed by screwing with the fixing member 56. As shown in the figure, the terminal support portion 42 extends over the extension of the leg portion 47.

  In FIG. 7, a power electrode 63 that provides a part of the power line is disposed between the connection terminal 61 and the power terminal 62. A power terminal 62 is provided by the end of the power electrode 63. The power electrode 63 extends from the connection terminal 61 through the terminal support portion 42 and the leg portion 47. The power electrode 63 extends through the wall of the housing portion 46. The power electrode 63 projects from the housing portion 46 through the through portion 44 and into the connector 45. A pair of power electrodes 63 corresponding to the pair of connection terminals 61 are arranged in the connection member 41. A pair of power terminals 62 corresponding to the pair of connection terminals 61 are provided in the connector 45. The pair of power terminals 62 are arranged side by side in the connector 45 so as to form a group.

  A circuit component 75 is accommodated in the accommodating portion 46. The circuit component 75 includes a substrate for mounting a circuit element and a circuit element. Further, the circuit component 75 can include lead wires and the like. The circuit component 75 is electrically connected to the internal terminal 73.

  Between the internal terminal 73 and the signal terminal 72, a signal electrode 74 that provides a part of the signal line is disposed. A signal terminal 72 is provided by the end of the signal electrode 74. The signal electrode 74 is thinner than the power electrode 63. The signal electrode 74 projects from the internal terminal 73 into the connector 45 through the wall of the housing portion 46 and the through portion 44. A plurality of signal electrodes 74 necessary for the circuit component 75 are arranged in the connection member 41. The sensor 71 and the signal electrode 74 are connected by a circuit component 75. A plurality of signal terminals 72 are arranged in the connector 45. The plurality of signal terminals 72 are arranged side by side in the connector 45 so as to form a group.

  The electrodes 63 and 74 are made of a conductor. The electrodes 63 and 74 are manufactured by cutting and bending a single continuous conductor plate. The electrodes 63 and 74 may be manufactured by connecting a plurality of conductor plates. The electrodes 63 and 74 and the resin material forming the connection member 41 are sealed so that fluid such as oil or gas does not leak through them. The sealing is provided by insert molding the electrodes 63 and 74 into the resin material forming the connection member 41. A sealing member such as rubber may be provided to provide a seal.

  1 to 7, the connecting member 41 can also be referred to as a connector unit having a connector 45. The connection member 41 can also be referred to as a power line connector unit that provides a connection between the stator coil 33 and the power terminal 62. The connection member 41 can also be referred to as a signal line connector unit that provides a connection between the sensor 71 and the signal terminal 72. In another aspect, the connection member 41 is also referred to as a centralized connection unit that centralizes the external connection for the rotating electrical machine 10 that provides the connection between the stator coil 33 and the power line and the connection between the sensor 71 and the signal line. Can do. Further, since the central connection unit has connectors 45 for both the power line and the signal line, it can also be called a central connector unit.

  The connecting member 41 is disposed on the annular portion on the radially outer side of the stator 31 so as to straddle from the axial direction of the stator 31. The annular portion is a portion where the plurality of magnetic poles 32a and the stator coil 33 are disposed. The accommodating portion 46 is positioned at one end in the axial direction of the annular portion. The through portion 44 and the connector 45 protrude radially outward from the stator 31.

  The accommodating portion 46 and the penetrating portion 44 are positioned slightly apart from the axial end surface of the stator 31 so as to avoid interference with the rotor 21. The connector 45 has an axial height that is greater than the axial height of the housing portion 46 and the through portion 44. The connector 45 is arranged on the outer side in the radial direction from the stator 31 and the rotor 21 so as to overlap the stator 31 in the radial direction. In other words, the connector 45 protrudes like a bowl so as to cover the outer side of the stator 31 in the radial direction.

  The leg portion 47 extends radially inward from the annular portion. The fixing portion 48 is positioned on the stator core 32. The terminal support portion 42 is inserted into a through hole that penetrates the stator core 32 at the same time when the connection member 41 is positioned at a normal position. The terminal support part 42, the leg part 47, and the fixing part 48 are located on the radially inner side from the annular part. The insertion portion 43 is located on the outer peripheral portion of the annular portion.

  The insertion portion 43 is located between the connector 45 and the fixing portion 48 in the radial direction. The insertion portion 43 is located between the pair of leg portions 47 in the circumferential direction. The insertion portion 43 extends longer than the pair of leg portions 47 in the axial direction. With respect to the radial direction of the stator 31, the accommodating portion 46 is disposed on the outer side in the radial direction than the terminal support portion 42.

  The manufacturing method of the rotating electrical machine in this embodiment includes a process of manufacturing the connection member 41. The terminal support portion 42, the connector 45, the housing portion 46, the insertion portion 43, the fixing portion 48, the through portion 44, and the leg portion 47 are formed by integral molding of a resin material. The manufacturing method further includes a step of attaching the connection member 41 to the stator 31 and a connection step of connecting the coil end 33a and the connection terminal 61 by welding after the attachment step. If a long wire harness extends from the connection member 41 in the connection process, the connection process may be hindered. The connector 45 makes it possible to connect the power line and the signal line with one touch by the connector 45 after the connection process.

  According to the embodiment described above, a part of the power line is provided by the connecting member 41. Since the connecting member has a connector, the rotating electrical machine 10 capable of separating the wire harness 15 from the stator 31 is provided. A rotating electrical machine 10 in which the length of a wire harness laid on a stator 31 is suppressed is provided. Moreover, in the manufacturing process of the rotating electrical machine for the internal combustion engine, the connection process between the coil end and the connection terminal can be easily performed by separating the wire harness from the connector. Since the wire harness does not hinder the manufacturing process, the rotating electrical machine 10 that is easy to manufacture is provided.

  Further, since the stator 31 is not attached with a long and flexible wire harness, the mounting operation to the internal combustion engine 12 is facilitated. Further, since the connection member 41 positions the connector 45 outside the body 13, no wire harness is laid inside the body 13. It is not necessary to provide a long wire harness including a margin for laying. For this reason, the rotary electric machine 10 with which the length of the wire harness was suppressed is provided. Furthermore, there is no wire harness in the body 13. Therefore, a member for fixing the wire harness in the body 13 is not required. For example, a clamp for fixing the wire harness to the stator 31 and / or a clamp for fixing the wire harness to the body 13 is not required.

Second Embodiment This embodiment is a modified example based on the preceding embodiment. In the above embodiment, a single sensor 71 is used. Instead, in this embodiment, two sensors 71 are used to detect the reference position.

  In FIG. 10, the sensor 71 is referred to as a first sensor 71. The rotating electrical machine 10 has a second sensor 278. The second sensor 278 is provided on the connection member 41. The distance between the center of the first sensor 71 and the center of the second sensor 278 is half the pitch TS of the magnetic poles of the permanent magnet 23 (TS / 2). The first sensor 71 and the second sensor 278 can be arranged in two insertion parts or in one common insertion part.

  In FIG. 11, the waveform S1 based on the output of the first sensor 71 and the waveform S2 based on the output of the second sensor 278 have a phase difference corresponding to the interval TS / 2. In this configuration, the 10th and 11th falling edges and the 12th and 13th falling edges are missing. The pulse width PW2 indicating the missing wave is smaller than the pulse width PW1 of the preceding embodiment.

  Also in this embodiment, an output of the number of basic pulses ± the number of reference position forming pulses can be obtained. The number of basic pulses is expressed as 2m × n. 2 m is the basic total number of poles provided in the permanent magnet 23. n is the number of sensors 71. The number of reference position forming pulses is represented by z × n. z is the number of reverse polarity portions different from the basic one provided in the permanent magnet 23. Note that m, n, and z are natural numbers.

  Control of the internal combustion engine 12, such as ignition control, is executed in accordance with the outputs of the sensors 71 and 278. For example, the rotational speed of the internal combustion engine 12 is calculated based on the basic pulse. The rotation angle is calculated and detected based on the reference position forming pulse, and used as the ignition reference timing. The reason for setting the reference timing is to calculate and determine the ignition timing based on the rotational speed or the like. According to this embodiment, more pulses than the number of magnetic poles of the permanent magnet 23 can be provided by the logical sum of the outputs of a plurality of sensors.

  According to this embodiment, the rotational position can be detected with high accuracy. The period (PW2) during which the rotational position cannot be detected due to the missing wave can be shortened. Further, even when the rotational speed of the internal combustion engine 12 is low, the reference position can be determined by using the signal of one sensor, so that the reference position can be determined with the same accuracy as the preceding embodiment.

  It is not a missing wave, that is, the number of normal pulses is twice the number of magnetic poles of the permanent magnet 23. Therefore, it is suitable when improvement in detection accuracy of the rotational speed of the internal combustion engine 12 is desired. If further improvement is desired, the number of sensors may be increased as needed.

  In addition, the sensor 71 and the sensor 278 may be displaced from each other in the axial direction. For example, the sensor 278 may be installed at a position that does not pass over the feature. In this case, a missing wave is generated only in one waveform S1. Even in this case, the same function can be provided. In addition, the two sensors 71 and 278 may be disposed in one insertion portion 43 or may be disposed in the two insertion portions 43.

Third Embodiment This embodiment is a modification in which the preceding embodiment is a basic form. In the above embodiment, the width of the main magnetic pole 25 and the width of the sub magnetic pole 26 are the same. Instead, in this embodiment, a sub magnetic pole 326 having a width smaller than that of the main magnetic pole 25 is used.

  In FIG. 12, the width of the sub magnetic pole 326 is set such that the presence of the sub magnetic pole 326 in the main magnetic pole 25 can be identified based on a signal from the sensor 71. In the illustrated embodiment, the width of the sub magnetic pole 326 is 1/3 of the width of one main magnetic pole 25. The sub magnetic pole 326 is provided in the central portion in the width direction of one main magnetic pole 25.

  As shown in FIG. 13, according to this embodiment, an additional wave appears instead of the missing wave. The additional wave has a 6 + 1st rising edge and a 6 + 2th falling edge. According to this embodiment, the period during which the rotational position cannot be detected due to the missing wave is eliminated. Furthermore, since the reference position is indicated by an additional wave with a remarkably short cycle, the reference position can be determined even when the rotational speed gradually increases when the internal combustion engine 12 is started.

Fourth Embodiment This embodiment is a modified example based on the preceding embodiment. In this embodiment, both the configuration of the second embodiment and the configuration of the third embodiment are used.

  In FIG. 14, the rotating electrical machine 10 includes two sensors 71 and 278 and a sub magnetic pole 326. As shown in FIG. 15, according to this embodiment, an additional wave appears in both the waveform S1 and the waveform S2. According to this embodiment, both the reference position detection performance and the rotational position detection performance are improved.

Fifth Embodiment This embodiment is a modified example based on the preceding embodiment. In the said embodiment, the rotary electric machine 10 is a generator. Instead, the disclosure in this specification can be applied to various rotating electrical machines 10. In this embodiment, application to a rotating electrical machine called a generator motor or an AC generator starter is disclosed.

  In this embodiment, the rotating electrical machine 10 has a multiphase stator coil 33. The three-phase stator coil 33 outputs three-phase AC power when functioning as a generator. The three-phase stator coil 33 functions as an electric motor when supplied with three-phase AC power. The electric circuit 11 includes an inverter circuit (INV) and a control device (ECU). The rotating electrical machine 10 includes a sensor for controlling the electric motor and a sensor for controlling the ignition. Regarding such application, the contents described in JP-A-2015-144564 or JP-A-2015-144552 are incorporated by reference.

  16 and 17 are perspective views showing the connection member 41 of this embodiment. FIG. 16 shows a state before the sealing resin 58 is injected. FIG. 17 illustrates a state after the sealing resin 58 is injected.

  The connection member 41 is disposed on the end surface of the stator 31. The connection member 41 is an arc-shaped member that extends across the plurality of magnetic poles 32 a of the stator 31. The connection member 41 has a connector 545 having a power terminal 62 and a signal terminal 72. The connector 545 opens toward the circumferential direction of the stator 31 inside the body 13. Also in this embodiment, the connection for the power line and the connection for the signal line are intensively realized in the connector 545.

  FIG. 17 illustrates one coil end 33a. The terminal support part 42 provides a flat surface extending in an arc shape or a fan shape. The terminal support part 42 supports a plurality of connection terminals 61. In this embodiment, the terminal support portion 42 supports three connection terminals 61 for the three-phase stator coil 33. The coil end 33 a is drawn on the terminal support portion 42 from the radially inner side of the connection member 41. The coil end 33 a is connected to the connection terminal 61 on the terminal support portion 42.

  The connection member 41 has a plurality of insertion portions 43. The plurality of insertion portions 43 include a sensor for detecting a reference position and a sensor for causing the rotating electrical machine 10 to function as an electric motor. For example, the plurality of insertion portions 43 include one sensor for detecting the reference position and three sensors for causing the rotating electrical machine 10 to function as an electric motor. In the figure, one sensor 71 is shown. The accommodating portion 46 has an opening 43 a for inserting the sensor 71 into the insertion portion 43.

  The signal electrode 74 provides an internal terminal 573. The internal terminal 573 is disposed in the accommodating portion 46. The connection member 41 has a plurality of internal terminals 573. The internal terminal 573 has a pin shape suitable for connection to the substrate that is the circuit component 575. The internal terminal 573 extends in the axial direction from the bottom surface of the housing portion 46.

  The circuit component 575 has a through hole and a land for receiving the internal terminal 573 and soldering. The circuit component 575 is disposed in the storage chamber so as to receive the internal terminal 573. The circuit component 575 is embedded in the sealing resin 58.

  The connection member 41 has leg portions 47 for fixing the connection member 41 to the stator core 32. Further, the connection member 41 has a stay 549 for fixing the connection member 41 to the body 13. The stay 549 makes it possible to stabilize the position of the connecting member 41 and to position the stator 31 in the circumferential direction.

  In this embodiment, the terminal support part 42, the connector 45, the accommodating part 46, the insertion part 43, the fixing part 48, and the leg part 47 are formed by integral molding of a resin material. The manufacturing method of the rotating electrical machine in this embodiment also includes a mounting process and a connection process. Therefore, the rotary electric machine 10 with easy manufacture is provided. Further, since the stator 31 is not attached with a long and flexible wire harness, the mounting operation to the internal combustion engine 12 is facilitated.

  Also in this embodiment, the terminal support portion 42 is disposed on the radially inner side from the housing portion 46. The terminal support portion 42 is provided in contact with the radially inner edge of the connection member 41. Thereby, the coil end 33 a extending from the radial inner side of the stator coil 33 can be easily disposed on the terminal support portion 42. Moreover, the accommodating part 46 is provided in contact with the edge of the radial direction outer side of a connection member. Thereby, the connection of the sensor 71 provided in the outer peripheral part of the stator 31 and circuit components becomes easy.

Sixth Embodiment This embodiment is a modification in which the preceding embodiment is a basic form. In the above embodiment, the connector 45 is disposed so as to open toward the radially outer side of the rotating electrical machine 10. Instead, the direction of the connector 45 can be set in various directions. For example, the connector 45 can be arranged to open toward the axial direction of the rotating electrical machine 10 or to open toward the circumferential direction of the rotating electrical machine 10. In addition, the connector 45 is formed so as to protrude to the outside of the body 13, but may be formed so as to open in a direction intersecting the protruding direction.

  In FIG. 18, the connection member 41 has a connector 645. The connector 645 is open toward the outside of the body 13 in the axial direction of the rotating electrical machine 10. Therefore, the connector 51 is inserted and connected toward the connector 645 along the axial direction of the rotating electrical machine 10.

Seventh Embodiment This embodiment is a modified example based on the preceding embodiment. In the above embodiment, the sensor 71 for detecting the reference position of the rotor 31 and / or three sensors for detecting the rotational position for causing the rotating electrical machine 10 to function as an electric motor are provided between the plurality of magnetic poles 32a. Is provided. Instead of this, the installation positions of the sensor 71 for detecting the reference position of the rotor 31 and / or the three sensors for detecting the rotational position for causing the rotating electrical machine 10 to function as an electric motor can be arbitrarily set. It is.

  FIG. 19 is a partial cross-sectional view showing the relationship among the stator 31, the permanent magnet 23, and the connection member 41 according to this embodiment. In addition, in order to show the position on the cross section of a some sensor, the cross section for convenience is shown. The connecting member 41 is illustrated as a sensor unit having one or more sensors. The connection member 41 includes a connector 45 and the like, as in the preceding embodiment. In addition, the connection member 41 of this embodiment may be understood as only a sensor unit.

  The connection member 41 has an insertion part 743. The insertion portion 743 extends from the housing portion 46 in the axial direction. The insertion portion 743 extends so as to face the inner peripheral surface of the permanent magnet 23. The insertion portion 743 is also called a fixed claw. The insertion portion 743 is inserted into the bobbin portion of the insulator 34. Therefore, the insertion portion 743 is not disposed between the adjacent magnetic poles 23a. The insertion portion 743 is positioned in the axial direction with respect to the magnetic pole 23a.

  The connection member 41 includes three sensors 781 for detecting a rotational position for causing the rotating electrical machine 10 to function as an electric motor. These sensors 781 are similar to the sensor 71. However, the sensor 71 is an element called a lead-wired element or a through-hole mount device. The sensor 781 is a surface mount type element. The surface-mount type element can simplify a manufacturing method such as a connection process with a substrate that is the electrical component 75. In addition, the surface-mounted element may enable cost reduction.

  The plurality of sensors 71 and 781 detect magnetic fluxes at the corners of the permanent magnet 23. For this reason, the sensor 71 faces only the end portion in the axial direction on the inner peripheral surface of the permanent magnet 23. The sensor 781 faces the end surface of the permanent magnet 23 in the axial direction. The permanent magnet 23 has a radial direction as a main magnetization direction in order to provide a rotating magnetic field to the stator 31. Therefore, the end face in the axial direction of the permanent magnet 23 is not the main magnetization direction. The sensor 781 detects a leakage magnetic flux at a position that is not the main magnetization direction. A permanent magnet 23 may be provided with a magnetized portion that applies a strong magnetic field to the sensor 781.

  FIG. 20 is a cross-sectional view of the stator 31 from the outside in the radial direction. Again, a convenient cross section is shown. The insertion portion 743 is inserted into the bobbin portion of the insulator 34. The insulator 34 has a receiving portion 734 a for receiving the insertion portion 743.

  The sensor 71 can be provided at any position without being limited by the position of the magnetic pole 32a. The plurality of sensors 781 can be provided at a position where the rotational position of the rotor 21 can be detected by the magnetic flux of the plurality of permanent magnets 23 without being limited by the position of the magnetic pole 32a. The sensors 71 and 781 can be provided at positions necessary to achieve these functions without depending on the position of the magnetic pole 32a.

  For example, the sensor 71 can be installed at an arbitrary position on the stator 31. The plurality of sensors 781 can be arranged with a pitch for detecting the rotational position without being limited by the pitch of the plurality of magnetic poles 32a.

  A space between the plurality of magnetic poles 32a is called a slot. For example, in the case of having a three-phase stator coil and “number of rotor poles: number of status lots = 2n: 3n (n is a natural number)”, the plurality of sensors 781 are between the plurality of magnetic poles 32a (slots). Can be arranged. This is because the pitch required for the plurality of sensors 781 matches the pitch of the plurality of slots. For example, in the case of “the number of rotor poles: the number of status lots = 12: 18” (may be expressed as 12P-18S), the physical pitch angle of the plurality of slots is 20 degrees. This is consistent with an electrical angle of 120 degrees determined by the number of rotor poles. For this reason, three sensors are arranged in a plurality of adjacent slots.

  On the other hand, in the case of “the number of rotor poles: the number of status lots = 20: 18 (20P-18S)”, the physical pitch angles of the plurality of slots do not coincide with the electrical angles determined by the rotor magnetic poles. In this case, if the physical pitch angle of the plurality of slots is 20 degrees, the electrical angle is 200 degrees. Even in such a case, in the above embodiment, a plurality of sensors 781 can be arranged without being limited by the plurality of magnetic poles 32a.

  Even when the single-phase stator coil 33 is provided (in the case of 12P-12P), a desirable multi-pulse (a plurality of waveforms with shifted phases) can be obtained. Further, the plurality of waveforms whose phases are shifted are also effective for increasing the number of pulses in one rotation of the rotor 21.

  In this embodiment, the sensor 71 is disposed in the insertion portion 743. Instead of this, one of the plurality of sensors 781 may be arranged in the insertion portion 743. The sensor 71 may be installed on a member different from the connection member 41. Similarly, only the sensor 71 may be provided in the connection member 41, and a plurality of sensors 781 may be installed in another member.

Eighth Embodiment This embodiment is a modification example based on the preceding embodiment. In the above embodiment, the sensors 71 and 781 are not provided between the plurality of magnetic poles 32a. Instead of this, the sensor 71 or one of the plurality of sensors 781 may be provided between the plurality of magnetic poles 32a.

  FIG. 21 is a convenient cross-sectional view showing the arrangement of the sensors of this embodiment. The insertion portion 43 is inserted between two adjacent magnetic poles 32a. Only one of the plurality of sensors 781 is disposed in the insertion portion 43. The sensor 781 arranged in the insertion portion 43 is an element called a lead-wired element or a through-hole mount device. The remaining two sensors 781 are surface-mounted elements mounted on the surface of the circuit component 75. Thereby, the majority sensor 781 can be provided by the surface-mounted element.

  The connection member 41 as the sensor unit has one insertion portion 43. Since there is one insertion part 43, it is not restricted by the pitch of the plurality of magnetic poles 32a. The sensor 781 arranged in the insertion portion 43 is one of a plurality of sensors 781. For example, since the sensor 781 disposed in the insertion portion 43 is disposed so as to face the inner peripheral surface of the permanent magnet 23, a signal that is more advantageous than the remaining two sensors 781 may be output.

  According to this embodiment, the fixing of the connection member 41 can be stabilized by the insertion portion 43. Further, the insertion portion 43 can be used to accommodate the sensor 781. A configuration in which one of the plurality of sensors 781 is arranged in the insertion portion 43 can also be adopted in the preceding embodiment. In this embodiment, the sensor 781 is arranged in the insertion portion 43. Instead of this, the sensor 71 may be disposed in the insertion portion 43.

Ninth Embodiment This embodiment is a modification example based on the preceding embodiment. In the above embodiment, the insertion portion 43 is used to accommodate the sensor 71 and / or one of the plurality of sensors 781. Instead of this, the connection member 41 as the sensor unit may include an insertion portion 43 that does not accommodate the sensor 71 and / or the sensor 781.

  FIG. 22 is a cross-sectional view for convenience illustrating the arrangement of the sensors of this embodiment. The accommodating portion 46 of the connection member 41 has a plurality of insertion portions 943. These insertion portions 943 do not hold or house the sensor 71 and / or the sensor 781. The insertion portion 943 functions as a member for positioning the connection member 41 with respect to the stator 31.

  According to this embodiment, the position of the connection member 41 can be defined reliably. Note that the number of insertion portions 943 may be one. Further, the insertion portion 943 may be three or more. The pitch of the plurality of insertion portions 943 corresponds to the pitch of the plurality of slots. On the other hand, the pitch of the plurality of insertion portions 943 does not match the pitch of the plurality of sensors 781.

  According to this embodiment, a plurality of sensors 781 can be provided without depending on the pitch of the plurality of magnetic poles 32a. In addition, the connection member 41 as a sensor unit having a plurality of sensors 781 can be reliably positioned at a predetermined position with respect to the stator 31. Further, the insertion portion 943 stabilizes the fixing of the connection member 41 as a sensor unit. The insertion portion 943 can also be employed in the preceding embodiment.

Other Embodiments The disclosure herein is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combinations of parts and / or elements shown in the embodiments. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which parts and / or elements of the embodiments are omitted. The disclosure encompasses the replacement or combination of parts and / or elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. Some technical scope disclosed is shown by the description of the scope of claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims.

  In the above embodiment, the sensor that detects the rotational position responds to the magnetic flux of the permanent magnet. As the sensor, a Hall element or a magnetoresistive element can be used. Further, the sensor can use a magnet pickup that uses a coil that reacts to a change in magnetic flux. Also, the feature to which the sensor reacts may be provided by irregularities provided on the rotor core 22. For example, the sensor is installed on the connection member 41 so as to face a magnetic material protrusion provided on the rotor core 22. Regarding such application, the contents described in JP-A-2015-130785 or JP-A-2014-36506 are incorporated by reference.

  In the above-described embodiment, the auxiliary magnetic poles 26 and 326 for forming the characteristic portion are provided on the edge of the permanent magnet 23 in the axial direction. The feature can be provided at various positions as long as it is formed on a path through which at least one of the sensors 71 and 278 passes. For example, a sub magnetic pole may be provided at a position away from the axial edge of the permanent magnet 23, that is, in the main magnetic pole 25.

  In the above embodiment, the connector 45 and the connector 51 can employ various shapes called electrical connectors or electrical couplers. For example, the connector 45 is a male side, and the connector 51 is a female side. Alternatively, the connector 45 may be the female side and the connector 51 may be the male side.

  In the above embodiment, the power terminal 62 and the signal terminal 72 are accommodated in one cylindrical connector 45, 545, 645. Instead of this, the connectors 45, 545, and 645 may have a cylindrical connector member that accommodates the power terminal 62 and a cylindrical connector member that accommodates the signal terminal 72. The power connector member and the signal connector member can be provided adjacent to or separated from each other. In the fifth embodiment, the connector 545 is open in the body 13. Alternatively, the connector 545 may be opened outside the body 13.

  In the above embodiment, the connection member 41 is fixed to the stator core 32. Instead of this, the connecting member 41 may be fixed to the stator core 32 via an inclusion such as the insulator 34. Also in these configurations, it can be said that the connection member 41 is a part of the stator 31 and is fixed to the stator 31.

  The fixing member 52 that fixes the connector 51 to the body 13 can be provided by various fastening mechanisms or coupling mechanisms. For example, the fixing member 52 may be provided by a snap-fit mechanism that uses elastic deformation of a resin member.

  In the first embodiment, two connection terminals 61, two legs 47, and two terminal supports 42 are provided in order to provide a power line for a single-phase winding. Instead of this, the number of parts such as connection terminals, legs, and terminal support portions is (1) the number of phases of the stator coil 33 and / or (2) the connection form and / or (3) the stator coil. It can be set according to the number of 33 parallels. Further, the number of connection terminals supported by one terminal support portion can also be set according to the total number of connection terminals, the shape of the terminal support portion, and the like. For example, in the case of a three-phase star connection or a three-phase delta connection, a connection terminal that is a multiple of 3 can be employed. Further, in the star connection, a connection terminal, a leg portion, and a terminal support portion connected to the neutral point may be provided.

  In the said embodiment, the connection member 41 provides both the connection of a power line, and the connection of a signal line. Alternatively, the connection member 41 may be configured to provide only a power line connection. Even in this configuration, it is possible to eliminate problems caused by the wire harness in the connection step of connecting the coil end 33a and the connection terminal 61.

  In the above embodiment, the fixing portion 48 is provided with the bush 57. Instead, a nut may be provided on the fixing portion 48. In this case, the fixing member 56 can be provided by a bolt that is disposed so as to penetrate the stator core 32 from the opposite surface of the stator core 32 and is screwed into the nut. Also in this case, the fixing portion 48 is fastened and fixed to the stator core 32 by the fixing member 56.

  In the above embodiment, the stator 31 of the rotating electrical machine 10 and the connector 51 are configured to vibrate in the same phase. In order to provide this configuration, the connector 51 is fixed to the body 13 on the internal combustion engine side. This fixing is preferably a mechanical fastening such as a bolt. Further, a part of the wire harness extending from the connector 51 may be fixed to the body 13 at one or more places. According to this configuration, the amplitude of the wire harness due to vibration is not given to the terminal of the connector 51. Moreover, the influence which the tension | tensile_strength of a wire harness has on the connector 51 is suppressed.

  The configuration of the above-described embodiment can be used in a form in which air for air cooling is supplied to the storage chamber that houses the rotating electrical machine 10 or a mode in which oil for the internal combustion engine 12 is supplied to the storage chamber. . In these cases, it is desirable to set the position where the connector 45 in the internal combustion engine 12 is disposed at a position where the airflow hits. In the case of a two-wheeled vehicle, it is desirable that the position is set to a position on the front side of the internal combustion engine 12 where the traveling wind hits.

  When the internal combustion engine 12 is water-cooled, it is desirable to dispose a water jacket in the vicinity of the connector 45, for example, directly below the connector 45 or around the connector 45. Such an arrangement contributes to suppressing the temperature of the connection member 41. When oil is supplied to the storage chamber, the connection member 41 may be cooled by supplying oil toward the connection member 41. For example, oil may be sprayed by providing an oil flow path and an injection port on the body 13 and / or the rotating shaft 14. Further, when the internal combustion engine 12 is air-cooled, the connection member 41 may be air-cooled by providing a blade for blowing air on the rotor 21. For example, a fan may be provided in the rotor 21 so that outside air is introduced into the accommodation chamber and blown toward the connection member 41.

  In the above embodiment, the connection member 41 is fixed to the stator 31 by the plurality of fixing members 56. Instead of this, a single screw or the like may be used as the fixing member 56. The connector 45 may be directly fixed to the body 13. In the above embodiment, the fixing member 56 fastens the connection member 41 from above the connection member 41. Instead of this, the fixing member 56 may be tightened so that the connection member 41 is pulled in from the opposite side of the stator 31.

A rotating electrical machine for an internal combustion engine disclosed herein includes a stator core (32) disposed opposite to a rotor (21), a stator (31) having a stator coil (33) mounted on the stator core (32), and a stator. And a connecting member (41) for providing a part of a power line for current flowing in the stator coil. The connecting member is a resin connector having a resin terminal support (42) for supporting a connection terminal (61) connected to the coil end (33a) of the stator coil, and a power terminal (62) for a power line. (45) and a power electrode (63) made of a conductor extending continuously between the connection terminal (61) and the power terminal (62), and the connection member is further arranged to face the rotor. Sensors (71, 278) for outputting a signal indicating a reference position in the rotation direction by detecting a characteristic portion provided on the rotor, a signal electrode (74) for a signal line for transmitting a signal indicating the reference position, It is provided by the signal electrodes, Ru and a signal provided to the connector pin (72).
The rotating electrical machine for an internal combustion engine disclosed herein includes a stator core (32) disposed to face the rotor (21), and a stator (31) having a stator coil (33) attached to the stator core (32). A connection member (41) that is fixed to the stator and provides a part of a power line for current flowing in the stator coil, and the connection member is connected to a coil end (33a) of the stator coil A resin terminal support portion (42) for supporting (61), a resin connector (45) having a power terminal (62) for a power line, a connection terminal (61), and a power terminal (62). A power electrode (63) made of a conductor extending therebetween, a fixing part (48) formed by integral molding of a connector and a resin material and positioned on the end face of the stator core, And a fixing member for fixing the stator core (56) of the parts, the power electrode is insert molded to the connecting member.

Claims (12)

A stator (31) having a stator core (32) arranged to face the rotor (21), and a stator coil (33) mounted on the stator core (32);
A connection member (41) fixed to the stator and providing a part of a power line for a current flowing through the stator coil;
The connecting member is
A resin-made terminal support (42) that supports a connection terminal (61) connected to the coil end (33a) of the stator coil;
A resin connector (45) having a power terminal (62) for the power line;
A rotating electrical machine for an internal combustion engine comprising a conductor power electrode (63) extending between the connection terminal (61) and the power terminal (62).   The connecting member further includes a through-hole (44) that divides a housing chamber that houses the rotating electrical machine for the internal combustion engine and is formed through the body (13) to be formed. The rotating electrical machine for an internal combustion engine according to claim 1, which opens outside.   The rotating electrical machine for an internal combustion engine according to claim 2, wherein the connection member includes a seal member (55) that is provided in the penetration portion and seals between the body and the penetration portion. The connecting member further includes:
Sensors (71, 278) that are arranged so as to face the rotor and output a signal indicating a reference position in the rotation direction by detecting a feature provided on the rotor;
A signal electrode (74) for a signal line for transmitting a signal indicating the reference position;
The rotating electrical machine for an internal combustion engine according to any one of claims 1 to 3, further comprising a signal terminal (72) provided by the signal electrode and provided on the connector. The connection member further includes circuit components (75, 575) for connecting the sensor and the signal electrode;
The rotating electrical machine for an internal combustion engine according to claim 4, further comprising a housing portion (46) for housing the circuit component.   The rotating electrical machine for an internal combustion engine according to claim 5, wherein the accommodating portion is disposed radially outside the terminal support portion with respect to a radial direction of the stator.   The rotating electrical machine for an internal combustion engine according to any one of claims 4 to 6, wherein the connection member further includes an insertion portion (43) disposed between the two magnetic poles (32a) of the stator core. The connecting member further includes:
Sensors (71, 278) that are arranged so as to face the rotor and output a signal indicating a reference position in the rotation direction by detecting a feature provided on the rotor;
A signal electrode (74) for a signal line for transmitting a signal indicating the reference position;
A signal terminal (72) provided by the signal electrode and provided in the connector;
Circuit components (75, 575) for connecting the sensor and the signal electrode;
An accommodating portion (46) for accommodating the circuit component and an insertion portion (43) disposed between the two magnetic poles (32a) of the stator core;
A fixing portion (48) fixed to the stator core by a fixing member;
The rotating electrical machine for an internal combustion engine according to claim 1, wherein the terminal support portion, the connector, the housing portion, the insertion portion, and the fixing portion are formed by integral molding of a resin material. The connecting member further includes:
A penetrating portion (44) that is disposed through the body (13) that defines and separates a housing chamber that houses the rotating electrical machine for the internal combustion engine;
A seal member (55) provided in the penetrating portion for sealing between the body and the penetrating portion;
The terminal support part, the connector, the housing part, the insertion part, the fixing part and the penetration part are formed by integral molding of a resin material,
The rotating electrical machine for an internal combustion engine according to claim 8, wherein the connector is formed so as to open outside the storage chamber. The connection member further includes a leg portion (47) extending so as to connect the housing portion and the fixing portion.
The terminal support portion, the connector, the housing portion, the insertion portion, the fixing portion, and the leg portion are formed by integral molding of a resin material,
The accommodating portion is disposed on one end surface of the stator,
The said terminal support part is formed in the rod shape so that the said stator core may be penetrated from the said leg part, The said connection terminal is supported on the other end surface of the said stator. Rotating electric machine for internal combustion engines. The accommodating portion is disposed on one end surface of the stator,
The terminal support portion is disposed on the one end surface of the stator and is disposed radially inward of the stator from the housing portion, and supports the connection terminal on the one end surface of the stator. 10. The rotating electrical machine for an internal combustion engine according to claim 8 or claim 9.   The rotor according to any one of claims 1 to 11, further comprising a rotor (21) having a permanent magnet (23) disposed so as to face the stator core and being rotated by a rotation shaft (14) of the internal combustion engine. The rotary electric machine for internal combustion engines described.

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