Connecting module in rotating electrical machine and rotating electrical machine

Abstract

To improve the layout freedom of a connecting module in a rotating electrical machine.SOLUTION: A connecting module 550 is a connecting module in a rotating electrical machine, comprising: a first end part 53; a second end part 156; a conductive component 152 located between the first and the second end parts and including an intermediate part 58 penetrating an open hole 533h of a case 530; and a housing 560 covering the conductive component. The housing 560 covers the conductive component while at least a section of the first end part and at least a section of the second end part are exposed. The housing includes a positioning part 562 which is inserted into and held in the open hole, and comes into contact with the case so as to restrict the rotation around the axis of the open hole or the movement to either side in the axial direction of the open hole of the housing.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present disclosure relates to a connection module for a rotating electric machine and a rotating electric machine. [Background technology]

[0002] Patent Document 1 discloses a terminal block including a metal plate and a plurality of terminal units held by the plate.

[0003] The terminal unit includes a resin housing and a terminal fitting that is held by the housing while passing through an opening in a plate. The terminal fitting is plate-shaped and has bolt insertion holes formed at both ends thereof that pass through the plate in the thickness direction.

[0004] The terminal units are spaced apart from one another and are integrated together via a plate, and the terminal block is fixed to the case by the plate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-157923 Summary of the Invention [Problem to be solved by the invention]

[0006] In the terminal block disclosed in Patent Document 1, a plurality of terminal units are integrated via a plate.

[0007] In this regard, it is desirable to further improve the degree of freedom in the layout of the connection modules.

[0008] Therefore, an object of the present disclosure is to improve the degree of freedom in the layout of connection modules in a rotating electric machine. [Means for solving the problem]

[0009] The connection module in a rotating electric machine of the present disclosure is a connection module in a rotating electric machine that includes an armature and a case that houses the armature, and includes a conductive part including a first end, a second end, and an intermediate part located between the first end and the second end and passing through a through hole of the case, and a housing that covers the conductive part, wherein the housing covers the conductive part with at least a portion of the first end and at least a portion of the second end exposed, the housing is a part that is passed through and held in the through hole, and the housing has a positioning part that contacts the case so as to restrict rotation around the axis of the through hole or movement to both sides in the axial direction of the through hole. Effect of the Invention

[0010] According to the present disclosure, it is possible to improve the degree of freedom in the layout of connection modules in a rotating electric machine. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing an integrated mechanical and electrical unit according to an embodiment. [Diagram 2] FIG. 2 is a partial perspective view showing the electromechanical integrated unit. [Diagram 3] FIG. 3 is a partial cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a perspective view showing a connection module. [Diagram 5] FIG. 5 is an exploded perspective view showing the connection module. [Figure 6] FIG. 6 is a perspective view showing a connection module according to a first modified example. [Figure 7] FIG. 7 is a side view showing a connection module according to a second modified example. [Figure 8] FIG. 8 is a perspective view showing a connection module according to a third modified example. [Figure 9] FIG. 9 is a perspective view showing a connection module according to a fourth modified example. [Figure 10] FIG. 10 is a side view showing a connection module according to the fourth modified example. [Figure 11] FIG. 11 is a perspective view showing a state in which the connection module according to Example 1 of the first embodiment is inserted and held in the through-hole. [Figure 12] FIG. 12 is a perspective view showing a connection module. [Figure 13] 13 is a partial cross-sectional view taken along line XIII-XIII in FIG. [Figure 14] FIG. 14 is a perspective view showing a state in which the connection module according to Example 2 of the first embodiment is penetrated and held in the through hole. [Figure 15] FIG. 15 is a perspective view showing a connection module. [Figure 16] 16 is a partial cross-sectional view taken along line XVI-XVI in FIG. [Figure 17] FIG. 17 is a perspective view showing a state in which the connection module according to Example 3 of Embodiment 1 is inserted and held in the through hole. [Figure 18] FIG. 18 is a perspective view showing a connection module. [Figure 19] FIG. 19 is a perspective view showing a state in which the connection module according to Example 4 of Embodiment 1 is inserted and held in the through-hole. [Figure 20] FIG. 20 is a perspective view showing a connection module. [Figure 21] FIG. 21 is a perspective view showing a state in which a connection module according to Example 5 of Embodiment 1 is inserted and held in a through-hole. [Figure 22] FIG. 22 is an exploded perspective view showing a state before the connection module is inserted and held in the through-hole. [Figure 23] 23 is a partial cross-sectional view taken along line XXIII-XXIII in FIG. [Figure 24] FIG. 24 is a schematic diagram showing a rotating electric machine equipped with a connection module. [Diagram 25] FIG. 25 is a schematic diagram showing a case of another rotating electric machine equipped with a connection module. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described.

[0013] The connection module in the rotating electric machine of the present disclosure is as follows.

[0014] (1) A connection module in a rotating electric machine having an armature and a case that houses the armature, the connection module comprising: a conductive part including a first end, a second end, and an intermediate part located between the first end and the second end and passing through a through hole of the case; and a housing that covers the conductive part, the housing covering the conductive part with at least a portion of the first end and at least a portion of the second end exposed, the housing being a part that is passed through and held in the through hole, and the housing having a positioning part that contacts the case so as to restrict rotation around the axis of the through hole or movement to both sides in the axial direction of the through hole.

[0015] According to this connection module, the housing of the connection module has a positioning portion that contacts the case so as to restrict rotation around the axis of the through hole or movement to both sides in the axial direction of the through hole. Therefore, the connection module can be easily fixed to the case using the housing that covers the conductive parts. This improves the layout freedom of the connection module in the rotating electric machine.

[0016] (2) In the connection module for the rotating electric machine of (1), the positioning portion may be a rotation prevention portion that contacts the case so as to restrict rotation about the axis of the through hole.

[0017] This makes it difficult for the connection module to rotate within the through hole, which stabilizes the posture of the first end and the second end, making it easier to connect the first end or the second end to the mating terminal and stabilizing the connection state.

[0018] (3) A connection module in a rotating electric machine of (2), wherein the housing has a cylindrical portion that penetrates into the through hole while covering the conductive component, and the rotation stop portion has a pin support protrusion that protrudes outward from the cylindrical portion and a pin-shaped portion that protrudes from the pin support protrusion along the axial direction of the through hole, and the pin-shaped portion may be inserted into a positioning hole formed in the housing with the cylindrical portion penetrating the through hole.

[0019] As a result, the pin-shaped portion is inserted into the positioning hole, thereby preventing rotation of the connection module. Since the pin-shaped portion is inserted into the positioning hole at a position away from the cylindrical portion, rotation is prevented more reliably.

[0020] (4) A connection module in a rotating electric machine of (2), wherein the housing has a cylindrical portion that is inserted into the through hole while covering the conductive part, the rotation stop portion has a rotation stop protrusion that protrudes outward from the cylindrical portion, and a tip of the rotation stop protrusion has a rotation stop plane parallel to the axial direction of the through hole, and when the cylindrical portion penetrates the through hole, the rotation stop plane may come into contact with a step-forming plane formed on the housing.

[0021] The housing is provided with a step-forming flat surface, which is formed on the housing and prevents the connection module from rotating. The step-forming flat surface comes into contact with the step-forming flat surface at a position away from the cylindrical portion, which prevents the connection module from rotating more reliably. The step can be easily formed on the housing by, for example, milling.

[0022] (5) A connection module in a rotating electric machine of (2), wherein the housing has a cylindrical portion that is inserted into the through hole while covering the conductive component, and the rotation stop portion has a flange-shaped protrusion that protrudes outward from the cylindrical portion, the flange-shaped protrusion being eccentric with respect to the cylindrical portion, and when the cylindrical portion passes through the through hole, the flange-shaped protrusion may be fitted into an opening edge forming surface formed in the housing at the opening of the through hole eccentrically with respect to the through hole.

[0023] In this way, the flange-like protrusion fits into the opening edge forming surface formed at the opening of the through hole in the housing, thereby preventing the connection module from rotating. Since the rotation is prevented near the through hole, the configuration can be made more compact.

[0024] (6) A connection module in a rotating electric machine of (5), wherein the flange-shaped protrusion has a tapered surface that gradually narrows toward the through hole, and the opening edge forming surface has a receiving tapered surface that gradually widens toward the outside, and the tapered surface may contact the receiving tapered surface when the cylindrical portion penetrates the through hole.

[0025] In this way, if the flange-shaped protrusion has a tapered surface and the opening edge forming surface has a receiving tapered surface, the flange-shaped protrusion can be easily pressed into the opening edge forming surface. Also, if the opening edge forming surface is a receiving tapered surface, processing for preventing rotation becomes easy.

[0026] (7) A connection module in a rotating electric machine of (5), wherein the flange-shaped protrusion has an end face facing the through hole and an outer peripheral surface extending from the periphery of the end face to the opposite side of the through hole, and the opening edge forming surface has a bottom surface facing outward and an inner peripheral surface extending from the periphery of the bottom surface to the outside, and when the cylindrical portion penetrates the through hole, the end face may be in contact with the bottom surface and the outer peripheral surface may be in contact with the inner peripheral surface.

[0027] In this way, the end face is in contact with the bottom surface and the outer circumferential surface is in contact with the inner circumferential surface, so that the rotation of the connection module is more reliably prevented. In addition, the opening edge forming surface having the bottom surface and the inner circumferential surface can be easily formed by, for example, countersinking.

[0028] (8) A connection module in any one of the rotating electric machines of (1) to (7), wherein the housing includes a first housing and a second housing that is combined with the first housing from a separate state, and the positioning portion has a first axial positioning portion that contacts the case from one axial side of the through hole and a second axial positioning portion that contacts the case from the other axial side of the through hole so as to restrict movement of the through hole to both axial sides, and the first housing may have the first axial positioning portion and the second housing may have the second axial positioning portion.

[0029] In this case, since the first housing and the second housing are configured to be combineable from a separated state, for example, one of the first housing and the second housing can be inserted into the through hole from one axial side thereof, and the other of the first housing and the second housing can be brought close to the other of the first housing and the second housing from the other axial side of the through hole, thereby easily realizing a configuration in which the first axial positioning portion and the second axial positioning portion come into contact with the case from both axial sides of the through hole.

[0030] (9) A connection module in a rotating electric machine of (8), wherein the first housing covers the conductive component with the second end protruding, and the second housing has an end through hole through which the second end passes and a set recess in which a fastening part for fastening the second end to a component to be connected is set, and a portion of the second end protruding from the end through hole may be positioned on the fastening part set in the set recess.

[0031] In this case, the portion of the second end protruding from the end through-hole is placed on the fastening component set in the setting recess, so that when the connection target component and the second end are fastened and fixed with the fastening component, the fastening component is fixed in a fixed position relative to the second end. Because the fastening component is set in the setting recess, the second housing having the setting recess is also held in a fixed position relative to the second end. Therefore, the first housing and the second housing are held in a combined state via the conductive component and the fastening component.

[0032] (10) Furthermore, the rotating electric machine of the present disclosure is a rotating electric machine including a case having a through hole formed therein, an armature located within the case, and a connection module for a rotating electric machine described in any one of (1) to (9) that passes through the through hole and electrically connects a conductive member on the armature side to a conductive component outside the case.

[0033] As described above, by using a connection module with improved layout freedom, the design freedom of a rotating electrical machine is improved.

[0034] [Details of the embodiment of the present disclosure] Specific examples of the connection module in the rotating electric machine and the rotating electric machine of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0035] [Embodiment 1] Hereinafter, there will be described a connection module in a rotating electric machine according to embodiment 1. In this embodiment, an example in which the connection module is incorporated in an electromechanical integrated unit will be described.

[0036] <Overall composition> For convenience of explanation, the overall configuration of the electromechanical integrated unit will be described. Fig. 1 is a perspective view showing the electromechanical integrated unit 20. Fig. 2 is a partial perspective view showing the electromechanical integrated unit 20. Fig. 3 is a partial cross-sectional view taken along line III-III in Fig. 2.

[0037] The rotating electric machine 40 includes a case 30, an armature 42, and a field magnet 48. The rotating electric machine 40 may be an electric motor or a generator.

[0038] The case 30 includes a cylindrical case main body 32 having a bottom and a lid portion 36. An armature 42 serving as a stator is housed within the cylindrical case main body 32. A field magnet 48 is disposed within the armature 42 as a rotor. The field magnet 48 rotates due to a magnetic field generated by the armature 42, or the armature 42 generates an electromotive force due to the rotation of the field magnet 48. A rotating shaft 49 is connected to the field magnet 48, and the rotational driving force of the rotating electric machine 40 is output via the rotating shaft 49, and external rotational motion is input via the rotating shaft 49. The central axis of the field magnet 48 and the rotating shaft 49 is the rotation axis X.

[0039] The cylindrical case body 32 has a partial partition 33 located partially around the outer periphery of the armature 42. The partial partition 33 is located on the inner side of the cylindrical case body 32 relative to the opening 32h, and is perpendicular to the rotation axis X. A partition side wall 34 extends from the periphery of the partial partition 33 toward the inner side of the cylindrical case body 32. As a result, the space of the cylindrical case body 32 that houses the armature 42 and the field magnet 48 and the space on the inner side of the cylindrical case body 32 relative to the partial partition 33 are partitioned by the partial partition 33 and the partition side wall 34. The opening 32h is closed by the lid portion 31.

[0040] An expansion space forming portion 35 is formed on a part of the outer periphery of the cylindrical case main body 32. The expansion space forming portion 35 is formed in a rectangular parallelepiped case shape surrounded by four side walls. An opening of the expansion space forming portion 35 on the opposite side to the cylindrical case main body 32 is closed by a lid portion 36.

[0041] The space within the expansion space forming portion 35 is continuous with the space surrounded by the partial partition 33 and the partition side wall 34. Therefore, the space within the expansion space forming portion 35 and the space 33S surrounded by the partial partition 33 and the partition side wall 34 can be used as one continuous space for accommodating components. For example, the space within the expansion space forming portion 35 and the space 33S surrounded by the partial partition 33 and the partition side wall 34 can be used as a space for accommodating the control board 26 including an inverter control circuit in which a circuit for driving and controlling the rotating electric machine 40 is formed (see FIG. 3).

[0042] The armature 42 housed in the case 30 includes a coil wire 46a. The coil wire 46a is a linear conductive member made of copper wire or the like. The coil wire 46a may be wound around an armature core. A relay connection member 47 is connected to the coil wire 46a. The relay connection member 47 is a wiring for drawing the coil wire 46a out of the armature 42. The relay connection member 47 may be a bus bar made of copper or the like, an electric wire in which a core wire including one or more strands is covered with insulating resin, or a braided wire made of braided metal wires. In the present embodiment, an example in which the relay connection member 47 is a bus bar made of copper or the like will be described.

[0043] More specifically, the relay connection member 47 is an elongated metal plate member. One end of the relay connection member 47 is connected to an end of the coil wire 46a by welding, crimping, or the like. The relay connection member 47 is drawn out from the end of the coil wire 46a to the radial outside of the armature 42 in a direction intersecting (for example, a direction perpendicular to) the rotation axis X. A screw insertion hole 47h is formed in the other end of the relay connection member 47. For example, the other end of the relay connection member 47 is shaped to include a disk-shaped portion 47a having the screw insertion hole 47h and an extension portion 47b extending from a circumferential portion of the disk-shaped portion 47a toward the coil wire 46a.

[0044] In this embodiment, relay connection members 47 corresponding to three phases, namely, U-phase, V-phase, and W-phase, extend outward from the armature 42. The relay connection members 47 extend in the cylindrical case main body 32 toward the side adjacent to the partial partition 33 in the direction of the rotation axis X.

[0045] An external bus bar terminal 27 extends as an external wiring from the control board 26 accommodated in the space 33S. The external bus bar terminal 27 is a bus bar formed of a metal plate such as copper. A screw insertion hole is formed in the external bus bar terminal 27. Three external bus bar terminals 27 may be provided corresponding to the three phases. The external bus bar terminals 27 extend in the space 33S toward the adjacent partial partition 33 in the direction of the rotation axis X.

[0046] That is, in this embodiment, the partial partition 33 is disposed between the relay connection member 47 and the external bus bar terminal 27. The relay connection member 47 intersects (here, perpendicular to) the rotation axis X, and the external bus bar terminal 27 is parallel to the rotation axis X and intersects (here, perpendicular to) the relay connection member 47.

[0047] The connection module 50 is a connection module 50 in a rotating electric machine 40 including an armature 42 and a component 30 that houses the armature 42. In this embodiment, the components to be connected are an intermediate connection member 47 and an external bus bar terminal 27. In particular, the intermediate connection member 47 is an example of an armature-side component to be connected.

[0048] A through hole 33h is formed in the partial partition 33 of the case 30, penetrating in the thickness direction thereof. The through hole 33h may have a shape in which the same diameter is continuous in the penetrating direction, or may have a shape in which the diameter changes in a tapered or stepped shape. The connection module is held through the through hole 33h, so that the connection module can be exposed to both the space 32S that houses the armature 42 in the case 30 and the space 33S that houses the control board 26, and the relay connection member 47 and the external bus bar terminal 27 can be electrically connected to each other.

[0049] <About the connection module> The connection module 50 will now be described. Fig. 4 is a perspective view showing the connection module 50, and Fig. 5 is an exploded perspective view showing the connection module 50.

[0050] The connection module 50 includes a conductive part 52 and a housing 60 .

[0051] The conductive part 52 includes a first end 54, a second end 56, and an intermediate part 58 located between the first end 54 and the second end 56. The intermediate part 58 passes through the through hole 33h, so that at least a part of the first end 54 is exposed in the space 32S and at least a part of the second end 56 is exposed in the space 33S. The conductive part 52 may be formed, for example, by cutting, machining, or pressing a metal round bar-shaped base material. The conductive part 52 is formed, for example, from copper or aluminum.

[0052] The first end 54 is a portion that is connected to the relay connection member 47 as a connection target component. In this embodiment, a fastening hole 54h is opened in an end face 54f of the first end 54 opposite to the intermediate portion 58. The fastening hole 54h is a hole into which a fastening component is fastened for fastening the fastening component. In this embodiment, it is assumed that the fastening component is a screw S, and the fastening hole 54h is a screw hole having a thread formed on the inner circumferential surface. The fastening hole 54h is a bottomed screw hole that extends from the end face 54f of the first end 54 toward the intermediate portion 58. The fastening hole 54h may penetrate to the second end 56 side.

[0053] In this embodiment, the first end 54 and the intermediate portion 58 are formed in a cylindrical shape. The central axis of the first end 54 and the central axis of the fastening hole 54h may coincide with each other. The portion of the conductive part 52 where the fastening hole 54h is formed in the extending direction of the first end 54 may be regarded as the first end 54.

[0054] A fastening plane 56fa is formed on a part of the periphery of the second end 56. In this embodiment, the fastening plane 56fa is perpendicular to the opposite end face 56fb of the second end 56 opposite the intermediate portion 58, and is parallel to the central axis of the conductive part 52. The fastening plane 56fa may be formed, for example, by cutting or pressing. The fastening plane may be oblique to the end face of the second end 56 opposite the intermediate portion 58, and may be non-parallel to the central axis of the conductive part 52. The first end and the intermediate portion may be formed in a square bar shape.

[0055] The opposite side fastening hole 56h opens in the fastening plane 56fa. The opposite side fastening hole 56h faces from the fastening plane 56fa toward the side of the second end 56 opposite to the fastening plane 56fa. The opposite side fastening hole 56h may be a hole extending in a direction intersecting (for example, perpendicular to) the fastening hole 54h. The opposite side fastening hole 56h may be a bottomed hole or may be a hole penetrating the second end 56. A screw groove is formed on the inner peripheral surface of the opposite side fastening hole 56h. In this embodiment, the opposite side fastening hole 56h is described assuming that it is a hole penetrating the second end 56.

[0056] In the extending direction of the second end 56 of the conductive part 52, a portion where the fastening plane 56fa is formed may be understood to be the second end.

[0057] The housing 60 is an insulating part that covers the conductive part 52. The housing 60 is, for example, a resin part. The housing 60 may be a part molded with the conductive part 52 as an insert part. The housing 60 may be a resin part molded separately from the conductive part 52, and the conductive part 52 may be inserted or otherwise incorporated into the resin part. The conductive part 52 may be a single part, or may be an assembled part of multiple parts. The housing 60 insulates the case 30 and the conductive part 52. An adhesive for waterproofing may be interposed at the boundary between the conductive part 52 and the housing 60.

[0058] The housing 60 covers the conductive component 52 while leaving at least the end surface 54f of the first end 54 and at least a part of the second end 56 exposed. The housing 60 may cover the entire intermediate portion 58 or may cover a part of the intermediate portion 58. In this embodiment, the portion of the housing 60 covering the intermediate portion 58 is formed in a cylindrical shape.

[0059] At least a portion of the housing 60 is a portion that is passed through and held in the through hole 33h. For example, the outer diameter of the portion of the housing 60 that covers the intermediate portion 58 is set to be the same as the inner diameter of the through hole 33h to such an extent that the portion fits in the through hole 33h without any rattle.

[0060] The housing 60 has a positioning protrusion 61 that contacts the case 30 so as to position the housing 60 in the penetrating direction of the through hole 33h. The positioning here only needs to be performed in at least one direction in the penetrating direction of the through hole 33h. In this embodiment, the positioning protrusion 61 is formed in an annular convex shape formed at a position near the first end 54 on the outer periphery of the housing 60. When the housing 60 is inserted into the through hole 33h from the space 32S side on the armature 42 side, the positioning protrusion 61 contacts the opening edge of the through hole 33h on the space 32S side. As a result, the housing 60 is positioned on one side in the penetrating direction of the through hole 33h.

[0061] The positioning protrusion may have a partial protruding shape in the circumferential direction of the housing 60. The positioning protrusion of the housing may be positioned in the penetrating direction of the through hole 33h by contacting a step formed midway in the penetrating direction of the through hole 33h.

[0062] The housing 60 may have a protrusion that contacts the opening edge of the space 33S on the control board 26 side in the penetrating direction of the through hole 33h. In this case, the part of the housing where the protrusion is formed may be configured to be press-fitted into the through hole 33h.

[0063] A circumferential groove 60g is formed in a portion of the housing 60 that is disposed within the through hole 33h. An annular elastic ring 68 is fitted onto the circumferential groove 60g. The annular elastic ring 68 is, for example, an O-ring made of rubber or the like. With the housing 60 inserted into the through hole 33h, the annular elastic ring 68 is interposed in a compressed state between the housing 60 and the inner peripheral surface of the through hole 33h. This prevents the intrusion or leakage of liquid or fluid that has passed between the housing 60 and the inner peripheral surface of the through hole 33h.

[0064] The housing 60 covers a portion extending from the entire intermediate portion 58 to the outer circumferential surface of the first end portion 54, and an end face 54f of the first end portion 54 is exposed at one end of the housing 60. Note that the entire end face 54f does not need to be exposed, and for example, the outer circumferential edge of the end face 54f may be covered by a peripheral wall portion 62 described later. The relay connection member 47 can come into surface contact with the end face 54f.

[0065] The housing 60 includes a peripheral wall portion 62 that surrounds the end face 54f of the first end portion 54 with the end face 54f exposed. The peripheral wall portion 62 is an annular portion that protrudes beyond the end face 54f. The disk-shaped portion 47a of the end of the relay connection member 47 can be disposed within the peripheral wall portion 62.

[0066] A recess 62g is formed in the peripheral wall 62, which is partially recessed in the peripheral direction. The bottom of the recess 62g is recessed further than the end face 54f. In other words, in the extending direction of the first end 54, the bottom of the recess 62g is located closer to the intermediate portion 58 than the end face 54f. Therefore, in a state where the disk-shaped portion 47a is in surface contact with the end face 54f, the extension portion 47b extending from the disk-shaped portion 47a can be drawn out to the outside of the peripheral wall 62 via the recess 62g. The width of the recess 62g may be the same as the width of the extension portion 47b to an extent that the extension portion 47b can be accommodated without rattling.

[0067] The peripheral wall 62 may be formed in a shape that can prevent rotation of the end of the relay connection member according to the shape of the end of the relay connection member. For example, if the end of the relay connection member is rectangular, the peripheral wall may be shaped such that three sides are surrounded by straight walls so as to accommodate the rectangular portion in a non-rotating state.

[0068] The housing 60 covers the conductive part 52 with at least a portion of the second end 56 exposed. In this embodiment, the housing 60 includes a receiving portion 64 that covers a portion of the periphery of the second end 56 opposite the fastening plane 56fa. Thus, the housing 60 covers the conductive part 52 with the fastening plane 56fa of the second end 56 exposed.

[0069] The receiving portion 64 is, for example, a semi-cylindrical portion. The receiving portion 64 can close the rear opening of the opposite side fastening hole 56h on the opposite side to the fastening flat surface 56fa. This makes it difficult for foreign matter generated in the opposite side fastening hole 56h to fall out of the rear opening of the opposite side fastening hole 56h.

[0070] In this embodiment, an opposite end surface 56fb of the second end portion 56 is exposed from the housing 60. The housing may cover the opposite end surface 56fb.

[0071] The receiving portion 64 may be omitted.

[0072] <Connection structure using connection modules> As described above, the connection module 50 is passed through and held in the through hole 33h of the partial partition 33. Since the through hole 33h is aligned along the direction of the rotation axis X, the conductive part 52 passes through the partial partition 33 of the case 30 along the direction of the rotation axis X.

[0073] In this state, the first end 54 is located within the space 32S that houses the armature 42. The second end 56 is located within the space 33S that houses the control board 26.

[0074] The disk-shaped portion 47a at the end of the relay connection member 47, which is the armature-side connection target component, contacts the end face 54f of the second end 56 at a position surrounded by the peripheral wall portion 62. Also, the extension portion 47b extending from the disk-shaped portion 47a passes through the recess 62g of the peripheral wall portion 62 and is drawn out to the outside of the peripheral wall portion 62. In this state, the screw S is inserted into the screw insertion hole 47h of the disk-shaped portion 47a and is fastened and fixed to the fastening hole 54h. When the screw S is rotated for fastening, a force that rotates with the disk-shaped portion 47a acts on the disk-shaped portion 47a. However, since the extension portion 47b is disposed in the recess 62g, the rotation of the disk-shaped portion 47a is suppressed. As a result, the extension direction of the relay connection member 47 with respect to the first end 54 is restricted to a certain direction.

[0075] The relay connection member 47 is connected to the coil wire 46a from a first end 54 located on the outer periphery side of the armature 42 toward the inside of the armature 42.

[0076] Further, the control board 26 is housed in the space 33S, and the external bus bar terminal 27 extends from the control board 26. With the external bus bar terminal 27 disposed so as to be in surface contact with the fastening flat surface 56fa, the screw S is inserted through a screw insertion hole formed in the external bus bar terminal 27, and is fastened and fixed to the opposite side fastening hole 56h.

[0077] As a result, the coil wire 46 a is electrically connected to the control board 26 via the relay connection member 47 and the connection module 50 .

[0078] <Effects, etc.> According to the connection module 50 configured as described above, the opposite side fastening hole 56h is opened in the end face 54f of the first end 54 opposite to the intermediate portion 58, and the housing 60 covers the conductive part 52 with at least the end face 54f of the first end 54 and at least a part of the second end 56 exposed. Therefore, the relay connection member 47 can be connected to the connection module 50 by contacting the end face 54f of the first end 54 and passing the screw S as a fastening part through the screw insertion hole 47h of the relay connection member 47 and fastening it to the opposite side fastening hole 56h. This allows the connection structure between the relay connection member 47 and the first end 54 to be made compact, and the configuration for drawing the coil wire 46a in the rotating electric machine 40 to another location to be made more compact.

[0079] Let us assume that the conductive parts of the connection module are formed by processing a plate material. In this case, in order to connect the conductive parts to the relay connection member 47 extending in a direction perpendicular to the conductive parts, it is possible to bend the conductive parts into an L-shape and fix a fastening nut to the end of the bent part. In this case, the end bent into an L-shape expands in a direction perpendicular to the middle part of the conductive parts, so that the connection structure with the conductive parts may become large. In addition, since it is only necessary to form a screw groove on the inner peripheral surface of the fastening hole 54h, there is no need to add a nut, and from this point of view, it is possible to reduce the number of parts. As a result, it is also possible to reduce costs.

[0080] In this embodiment, the first end 54 for fastening can be disposed on the extension of the intermediate portion 58, so the first end 54 is unlikely to spread out to a position far removed from the extension of the intermediate portion 58. In addition, there is no need to attach a separate nut for fastening. This allows the connection structure between the relay connection member 47 and the connection module 50 to be made more compact.

[0081] In addition, since the housing 60 is a portion that is passed through and held within the through-hole 33h, the connection module 50 can be fixed to the case 30 in a compact configuration. For example, a separate bracket for screw fixing can be unnecessary to fix the housing 60 to the case 30. Therefore, the fixing structure of the connection module 50 can be made smaller by the amount that the fixing bracket can be omitted.

[0082] Furthermore, since the housing 60 has the positioning protrusions 61, the connection module 50 can be positioned relative to the through-hole 33h by the structure of the housing 60 itself, making it possible to make the configuration for fixing the connection module 50 to the case 30 compact.

[0083] The connection module 50 may be supported so as to be held in a fixed position by fixing the first end 54 or the second end 56 to a connection target component that is arranged in a fixed position.

[0084] Moreover, the housing 60 has a peripheral wall 62 surrounding the end face 54f, and a recess 62g is formed in the peripheral wall 62. Therefore, with the disk-shaped portion 47a of the relay connection member 47 in contact with the end face 54f inside the peripheral wall 62, the extension portion 47b can be drawn out to the outside of the peripheral wall 62 via the recess 62g. Since the extension portion 47b is located inside the recess 62g, the relay connection member 47 is unlikely to rotate around the first end 54 during the fastening and fixing operation of the screw S, etc. This stabilizes the extending direction of the relay connection member 47 relative to the first end 54 when the relay connection member 47 is fastened to the end face of the first end 54.

[0085] A fastening plane 56fa is formed on a part of the periphery of the second end 56, and an opposite-side fastening hole 56h is opened in the fastening plane 56fa. The housing 60 covers the conductive part 52 with the fastening plane 56fa of the second end 56 exposed. Therefore, the external bus bar terminal 27, which is another connection target part, is brought into contact with the fastening plane 56fa of the second end 56, and a screw S is passed through the external bus bar terminal 27 and fastened to the opposite-side fastening hole 56h, so that the external bus bar terminal 27 can be connected to the connection module 50. This allows the relay connection member 47 and the external bus bar terminal 27 to be connected to each other via the conductive part 52 by making the fastening directions of the relay connection member 47 and the external bus bar terminal 27 different from each other.

[0086] The housing 60 also includes a receiving portion 64 that covers the periphery of the second end portion 56 on the opposite side to the fastening flat surface 56fa. Therefore, even if a foreign object is generated when the screw S is fastened into the opposite-side fastening hole 56h, the foreign object is received by the receiving portion 64.

[0087] Moreover, the conductive part 52 penetrates the partial partition 33 of the case 30 along the direction of the rotation axis X. Therefore, the space around the armature 42 can be partitioned by the partial partition 33 in the direction of the rotation axis X for effective use. For example, the space on one main surface side of the partial partition 33 can be used as a space for drawing the relay connection member 47 to the outside of the armature 42 and connecting it to the connection module 50, and the space on the other main surface side of the partial partition 33 can be used as a space for accommodating the control board 26. This makes it possible to effectively utilize the space that is likely to become a dead space, and makes it easy to reduce the overall size of the electromechanical integrated unit 20. In this case, the relay connection member 47 can be easily connected in a compact configuration to the first end portion 54 located in the space 32S that accommodates the armature 42.

[0088] Furthermore, according to this connection module 50, since the housing 60 is the portion that is passed through and held in the through hole 33h, a configuration can be realized in which the coil wire 46a of the rotating electric machine 40 can be drawn to another location by utilizing the portions of the first end 54 and the second end 56 that are exposed from the housing. Since the housing 60 is passed through and held in the through hole 33h of the case 30, the connection module 50 in the rotating electric machine 40 can be made smaller. This effect can be obtained even if a configuration in which the fastening hole 54h is not formed in the end face 54f is used.

[0089] In this case, since the housing 60 has the positioning protrusions 61, the connection module 50 can be positioned with respect to the through-hole 33h by the structure of the housing 60 itself, making it possible to further compact the configuration.

[0090] <Modification of the first embodiment> In the first embodiment, an example has been described in which the end surface 54f and the fastening holes 54h are located inside the space 32S that accommodates the armature 42. However, the configuration in which the fastening holes are formed on the end surface may be located on the side of the space 32S that accommodates the control board 26.

[0091] In the first embodiment, the second end 56 does not have to be located within the space 33S that houses the control board 26, and may be exposed to the outside of the case, for example.

[0092] Various modifications will be described based on the above-mentioned first embodiment.

[0093] In the connection module 150 according to the first modification shown in FIG. 6, the conductive part 152 corresponding to the conductive part 52 includes a first end 54, a second end 156, and an intermediate part 58. The second end 156 is different from the second end 56 and includes a plate-like part, more specifically, a part formed in a disk-shaped part 156a. The disk-shaped part 156a may be formed, for example, by pressing one end of a round bar-shaped base material. A screw insertion hole is formed in the disk-shaped part 156a, and a nut 156b having a threaded groove is fixed thereto. The nut 156b is fixed to the disk-shaped part 156a by, for example, caulking or welding. With the part to be connected overlapped on the disk-shaped part 156a, a screw is threadedly fastened to the nut 156b through the screw insertion hole of the part to be connected and the screw insertion hole of the disk-shaped part 156a, thereby fixing the part to be connected to the second end 156.

[0094] The housing 160 corresponding to the housing 60 exposes the end face 54f and the outer periphery of the first end 54, and covers the intermediate portion 58 while exposing the second end 156. That is, in this housing 160, the peripheral wall portion 62 and the receiving portion 64 are omitted. However, the housing 160 has the positioning protrusion 61 described in the embodiment.

[0095] In this modified example, since the connection module 150 has the first end 54, the effects provided by the first end 54 are the same as those of the above embodiment.

[0096] Furthermore, since the housing 160 of the connection module 150 is configured to be passed through and held in the through hole 33h, the effects of the passed through holding are the same as those of the above embodiment.

[0097] 7, a conductive part 252 corresponding to the conductive part 52 includes a first end 54, a second end 256, and an intermediate part 58. The second end 256 is different from the second end 56 in that an opposite side fastening hole 256h is opened in an opposite side end face 256f opposite to the intermediate part 58. In other words, the second end 256 is configured similarly to the first end 54, except that the second end 256 faces the opposite side to the first end 54.

[0098] The housing 260 corresponding to the housing 60 covers the conductive part 252 with at least the opposite end face 256f of the second end 256 exposed. Therefore, when the external bus bar terminal 227 corresponding to the external bus bar terminal 27 extends parallel to the opposite end face 256f of the second end 256, the external bus bar terminal 227 can be fastened and fixed to the second end 256 by the screw S with the external bus bar terminal 227 in contact with the opposite end face 256f. The housing 260 has the positioning protrusion 61 described in the embodiment.

[0099] In this modified example, since the connection module 250 has the first end 54, the effects provided by the first end 54 are the same as those of the above embodiment.

[0100] In addition, in this modification, since fastening holes 54h, 256h are formed in both end faces 54f, 256f, respectively, a compact connection configuration with the connection target components is realized at both ends of the connection module 250. This configuration is also effective when the connection target components connected to both ends are parallel to each other and have opposing fastening directions.

[0101] Furthermore, since the housing 260 of the connection module 250 is configured to be passed through and held in the through hole 33h, the effects of the passed through holding are the same as those of the above embodiment.

[0102] In a connection module 350 according to a third modification shown in FIG. 8, a conductive part 352 corresponding to the conductive part 52 includes a first end 354, a second end 356, and an intermediate part 58. Unlike the first end 54, the first end 354 includes a part formed in a plate shape, more specifically, a rectangular plate-shaped part 354a. A relay connection member 347 corresponding to the relay connection member 47 is joined to the rectangular plate-shaped part 354a. The joining may be ultrasonic joining, laser welding, resistance welding, or soldering.

[0103] The relay connection member 347 may be an electric wire or a braided wire. In this embodiment, the relay connection member 347 includes a plurality of electric wires 347a arranged in parallel. The other end of the relay connection member 347 is joined to a coil wire or a bus bar connected to the coil wire. Such a relay connection member 347 can bend more flexibly than a bus bar formed of a metal plate. The second end 356 has the same configuration as the second end 256 according to the second modified example.

[0104] The housing 360 corresponding to the housing 60 covers the intermediate portion 58 while exposing the end face and outer periphery of the second end portion 356 and the first end portion 354. The housing 360 has the positioning protrusion 61 described in the embodiment.

[0105] In this modified example, since the connection module 350 has the second end 356, the action and effect of the second end 356 is the same as that of the first end 54 in the above embodiment.

[0106] Furthermore, since the housing 360 of the connection module 350 is configured to be passed through and held in the through hole 33h, the effects of the passed through holding are the same as those of the above embodiment.

[0107] In a connection module 450 according to a fourth modification shown in FIGS. 9 and 10, a conductive part 452 corresponding to the conductive part 52 includes a first end 454, a second end 456, and an intermediate part 458.

[0108] The second end 456, like the second end 156 described in the first modified example, is configured such that a nut 456b is fixed to a disk-shaped portion 456a having a screw insertion hole.

[0109] The intermediate portion 458 is formed in a band-like shape.

[0110] The first end 454, like the second end 456, has a configuration in which a nut 454b is fixed to a disk-shaped portion 454a having a screw insertion hole. Unlike the second end 456, the first end 454 is bent with respect to the intermediate portion 458. The first end may extend straight with respect to the intermediate portion.

[0111] A housing 460 corresponding to the housing 60 covers the middle portion 458 while exposing the first end portion 454 and the second end portion 456. The housing 460 can be held by being inserted through the through hole 33h, and has the positioning protrusion 61 described in the embodiment.

[0112] In this modified example, the housing 460 of the connection module 450 is configured to be penetrated and held in the through hole 33h, and therefore the effect of the penetration and holding is the same as in the above embodiment. In addition, the target connection parts 470 and 472 extending in different directions, for example, in directions perpendicular to each other, can be easily fastened and fixed by the screws S.

[0113] [Embodiment 2] A connection module in a rotating electric machine according to a second embodiment will be described. In the first embodiment, the connection module 150 in the rotating electric machine 40 including the armature 42 and the case 30 that houses the armature 42 has been described. It is assumed that a plurality of the connection modules 150 are provided according to the number of phases of the inverter. In the first embodiment, an example has been described in which the connection modules 150 are not integrated with a bracket or the like, but are inserted into the through-holes 33h of the case 30 in a separated state. In this case, it is desirable that the connection module 150 itself has a more reliable positioning structure with respect to the through-holes 33h. In the second embodiment, a form is described in which the connection module 150 in the first embodiment has a positioning portion that contacts the case so as to restrict rotation around the axis of the through-hole or movement to both sides in the axial direction of the through-hole.

[0114] In the second embodiment, the same components as those described in the first embodiment will be referred to by the same reference numerals, and the description thereof may be omitted.

[0115] In the following Examples 1 to 4, examples are described in which the positioning portion is a rotation stopper that contacts the case so as to restrict rotation of the housing around the axis of the through hole. In Example 5, an example is described in which the positioning portion restricts movement of the through hole to both sides in the axial direction.

[0116] Fig. 11 is a perspective view showing a state in which the connection module 550 according to the first embodiment is passed through and held in the through hole 533h. Fig. 12 is a perspective view showing the connection module 550. Fig. 13 is a partial cross-sectional view taken along line XIII-XIII in Fig. 11. Fig. 11 shows a part of the case 530. Three through holes 533h are formed in a part of the case 530, and the connection module 550 is passed through and held in one of them.

[0117] The connection module 550 includes the conductive parts 152 and a housing 560 .

[0118] The conductive part 152 is the same as the conductive part 152 of the first modification of the first embodiment.

[0119] Similar to the housing 160, the housing 560 covers the conductive part 152 with at least a part of the first end 54 and at least a part of the second end 156 exposed. The housing 560 is, for example, a resin part molded with the intermediate part 58 of the conductive part as an insert part.

[0120] The housing 560 includes a cylindrical portion 562 and a flange-like protrusion 563 serving as a rotation stopper.

[0121] The cylindrical portion 562 is a cylindrical portion having an outer diameter that is the same as or smaller than the inner diameter of the through-hole 533h. An annular groove 562g is formed on the outer periphery of the cylindrical portion 562. An elastic ring 568 made of rubber or the like is attached to the annular groove 562g.

[0122] The columnar portion 562 is inserted into the through hole 533h of the case 530. The elastic ring 568 is interposed in a compressed state between the bottom of the annular groove 562g and the inner circumferential surface of the through hole 533h, and watertightness is easily ensured between the housing 560 and the through hole 533h. In particular, since the elastic ring 568 is disposed between the circumferential bottom of the annular groove 562g and the circumferential inner circumferential surface of the through hole 533h, the elastic ring 568 is compressed evenly in the circumferential direction, and watertightness is easily ensured over the entire circumferential direction of the columnar portion 562.

[0123] The brim-shaped protrusion 563 is an example of a positioning portion, and more specifically, is an example of a rotation stopper that comes into contact with the case 530 so as to restrict rotation of the housing 560 around the axis of the through-hole 533h.

[0124] In this embodiment, the flange-shaped protrusion 563 is an annular protrusion protruding from the outer periphery of the columnar portion 562 toward the outer periphery. The flange-shaped protrusion 563 may be located in the axial middle of the columnar portion 562, or may be located toward one end. In this embodiment, the flange-shaped protrusion 563 protrudes from the periphery of the columnar portion 562 on one axial end side, more specifically, from the periphery of the columnar portion 562 on the first end 54 side. The flange-shaped protrusion may protrude from the periphery of the columnar portion on the second end side.

[0125] The flange-shaped protrusion 563 is eccentric with respect to the columnar portion 562. In other words, the outer peripheral surface of the columnar portion 562 forms a circle, and the outer peripheral surface of the flange-shaped protrusion 563 also forms a circle. The central axis A2 of the flange-shaped protrusion 563 is set at a different position from the central axis A1 of the columnar portion 562. Therefore, the protruding dimension of the flange-shaped protrusion 563 with respect to the outer peripheral surface of the columnar portion 562 is largest at a part of the outer peripheral surface of the columnar portion 562, is smallest at the opposite part, and gradually becomes smaller from the part toward the opposite part.

[0126] An annular end face 563a of the flange-shaped protrusion 563 on the cylindrical portion 562 side faces the through hole 533h. An outer peripheral surface 563b of the flange-shaped protrusion 563 faces from the periphery of the end face 563a to the opposite side to the cylindrical portion 562, i.e., the opposite side to the through hole 533h.

[0127] Here, the through hole 533h includes a hole main body 533h1 and an opening edge forming surface 533h2 formed at one side opening of the through hole 533h. The hole main body 533h1 is a portion through which the cylindrical portion 562 is disposed. The opening edge forming surface 533h2 is formed on a surface that is wider than the hole main body 533h1 and extends in an annular surface. The opening edge forming surface 533h2 is eccentric with respect to the hole main body 533h1. In other words, the central axis of the opening edge forming surface 533h2 is disposed at a position different from the central axis of the hole main body 533h1.

[0128] In this example, the opening edge forming surface 533h2 includes a bottom surface 533h2a that spreads from the opening edge of the hole body portion 533h1 in a direction perpendicular to the axial direction of the hole body portion 533h1, and an inner peripheral surface 533h2b that rises from the periphery of the bottom surface 533h2a. The bottom surface 533h2a is a surface that faces outward in the through hole 533h. The inner peripheral surface 533h2b is a surface that faces outward from the periphery of the bottom surface 533h2a of the through hole 533h.

[0129] The through hole 533h can be easily formed, for example, by forming a circular hole with a drill tool or the like, and then performing countersinking on one opening edge of the circular hole with a countersink tool.

[0130] Then, with the cylindrical portion 562 penetrating the hole main body 533h1 of the through hole 533h, the flange-shaped protrusion 563 is fitted into the opening edge forming surface 533h2 so that the end face 563a contacts the bottom face 533h2a and the outer circumferential face 563b contacts the inner circumferential face 533h2b. In this state, when the housing 560 tries to rotate around the central axis of the hole main body 533h1 of the through hole 533h, the flange-shaped protrusion 563, which is eccentric with respect to the central axis of the through hole 533h, interferes with the outer circumferential face 563b of the opening edge forming surface 533h2, so that the rotation of the housing 560 and the connection module 550 including the housing 560 is suppressed.

[0131] In addition, the outer peripheral surface 563b contacting the inner peripheral surface 533h2b means that the outer peripheral surface 563b is in contact with the inner peripheral surface 533h2b so as to regulate the above-mentioned rotation, and it is not necessarily required that the entire circumferential direction of the outer peripheral surface 563b is in tight contact with the inner peripheral surface 533h2b at all times.

[0132] According to the first embodiment, the housing 560 of the connection module 550 has a brim-shaped protrusion 563 as a positioning portion and a rotation stopper that contacts the case 530 so as to restrict rotation around the axis of the through hole 533h. Therefore, it is easy to fix the connection module 550 to the case 530 by using the housing 560 that covers the conductive part 152. This improves the degree of freedom in the layout of the connection module 550 in the rotating electric machine.

[0133] Also, the connection module 550 can be fixed to the case 530 without using a bracket.

[0134] In addition, since the connection module 550 is less likely to rotate within the through hole 533h, the postures of the first end 54 and the second end 156 are stabilized, making it easier to connect the first end 54 or the second end 156 to the mating terminal and stabilizing the connection state.

[0135] Furthermore, the flange-shaped protrusion 563 is fitted into an opening edge forming surface 533h2 formed at the opening of the through-hole 533h, thereby preventing rotation of the connection module 550. Since the rotation is prevented near the through-hole 533h, the configuration for holding the connection module 550 can be made more compact.

[0136] Furthermore, since the rotation of the connection module 550 is prevented by processing the opening edge of the through hole 533h, processing of the case 530 is also easy.

[0137] Moreover, in the central axis direction of the through hole 533h, the end face 563a of the flange-shaped protrusion 563 contacts the bottom face 533h2a. The outer peripheral face 563b and the inner peripheral face 533h2b perpendicular to the end face 563a and the bottom face 533h2a contact each other, thereby preventing the housing 560 from rotating. This more reliably prevents the connection module 550 from rotating and restricts its position to one side of the central axis of the through hole 533h. The opening edge forming face 533h2 having the bottom face 533h2a and the inner peripheral face 533h2b can be easily formed, for example, by countersinking.

[0138] Fig. 14 is a perspective view showing a state in which the connection module 650 according to the second embodiment is inserted and held in the through-hole 633h. Fig. 15 is a perspective view showing the connection module 650. Fig. 16 is a partial cross-sectional view taken along line XVI-XVI in Fig. 14.

[0139] A connection module 650 according to the second embodiment has a configuration in which the shape of the brim-like protrusion 563 in the connection module 550 is changed.

[0140] That is, the flange-shaped protrusion 663 corresponding to the flange-shaped protrusion 563 is an example of a positioning portion, and more specifically, is an example of a rotation stopper that contacts the case 630 so as to regulate the rotation of the housing 660 around the axis of the through hole 633h.

[0141] In this embodiment, the flange-shaped protrusion 663 is an annular protrusion that protrudes outward from the outer periphery of the columnar portion 562. Like the flange-shaped protrusion 563, the flange-shaped protrusion 663 protrudes from the periphery of the columnar portion 562 on the first end 54 side, but may be located at any position in the axial direction of the columnar portion 562.

[0142] Like the flange-shaped protrusion 563, the flange-shaped protrusion 663 is eccentric with respect to the cylindrical portion 562. The flange-shaped protrusion 663 has a tapered surface 663f that gradually reduces in diameter toward the cylindrical portion 562, i.e., the through hole 633h. The tapered surface 663f has an outer peripheral surface shape of a truncated cone with the apex of the cone cut off. The central axis B2 of the flange-shaped protrusion 663 is set at a different position from the central axis B1 of the cylindrical portion 562.

[0143] Here, the opening edge forming surface 633h2 of the through hole 633h has a receiving side tapered surface 633h2f that gradually widens toward the outside of the through hole 633h.

[0144] Such a through hole 633h can be easily formed, for example, by forming a circular hole with a drill tool or the like, and then C-machining one side opening edge of the circular hole with a countersink or the like.

[0145] Then, with the columnar portion 562 penetrating the hole main body 633h1 of the through hole 633h, the flange-shaped protrusion 663 is fitted into the opening edge forming surface 633h2 so that the tapered surface 663f contacts the receiving tapered surface 633h2f. In this state, when the housing 660 tries to rotate around the central axis of the hole main body 633h1 of the through hole 633h, the tapered surface 663f of the flange-shaped protrusion 663, which is eccentric with respect to the central axis of the through hole 633h, interferes with the receiving tapered surface 633h2f of the opening edge forming surface 633h2, so that rotation of the housing 660 and the connection module 650 including the housing 660 is suppressed.

[0146] In addition, when the tapered surface 663f contacts the receiving tapered surface 633h2f, it means that the tapered surface 663f contacts the receiving tapered surface 633h2f so as to regulate the above-mentioned rotation, and it is not necessarily required that the entire circumferential direction of the tapered surface 663f is in tight contact with the receiving tapered surface 633h2f at all times.

[0147] According to the second embodiment, except for the effect due to the difference in the shape of the flange-like projection 663, the same effect as in the first embodiment can be obtained.

[0148] In addition, since the flange-shaped protrusion 663 has the tapered surface 663f and the opening edge forming surface 633h2 has the receiving tapered surface 633h2f, the flange-shaped protrusion 663 can be easily pressed into the opening edge forming surface 633h2. In addition, the receiving tapered surface 633h2f can be easily machined by a countersink or the like.

[0149] Fig. 17 is a perspective view showing a state in which the connection module 750 according to the third embodiment is inserted and held in the through-hole 733h. Fig. 18 is a perspective view showing the connection module 750.

[0150] A connection module 750 according to the third embodiment has a positioning portion 762 having a pin-shaped portion 764 instead of the flange-shaped protrusion 563 in the connection module 550 described above.

[0151] That is, the positioning portion 762 has a pin supporting protrusion 763 and a pin-shaped portion 764 .

[0152] The pin support protrusion 763 protrudes from the cylindrical portion 562 toward the outer periphery. The pin support protrusion 763 may protrude from any position in the axial direction of the cylindrical portion 562. In this embodiment, the pin support protrusion 763 protrudes from the end of the cylindrical portion 562 on the first end 54 side. The pin support protrusion 763 may protrude partially in the circumferential direction of the cylindrical portion 562, or may protrude entirely in the circumferential direction. In this embodiment, the pin support protrusion 763 protrudes entirely in the circumferential direction of the cylindrical portion 562, and partially protrudes greatly in the circumferential direction. The end face of the pin support protrusion 763 on the cylindrical portion 562 side is perpendicular to the central axis of the cylindrical portion 562.

[0153] The pin-shaped portion 764 protrudes from the pin support piece 763 toward the through hole 733h along the axial direction of the through hole 733h. In other words, the pin-shaped portion 764 protrudes from the pin support piece 763 toward the columnar portion 562 along the axial direction of the columnar portion 562.

[0154] A positioning hole 734h is formed in the case 730 at a position away from one opening edge of the through hole 733h toward the outer periphery.

[0155] With the columnar portion 562 penetrating the through hole 733h, an end face of the pin support piece 763 contacts the case 730 around the through hole 733h, and the pin-shaped portion 764 is inserted into the positioning hole 734h. By inserting the pin-shaped portion 764 into the positioning hole 734h, rotation of the housing 760 around the axis of the through hole 733h is restricted.

[0156] According to the third embodiment, similarly to the first embodiment, the rotation of the connection module 750 around the through-hole 733h is restricted.

[0157] Furthermore, since the pin-shaped portion 764 is inserted into the positioning hole 734h at a position away from the columnar portion 562, rotation is prevented more reliably.

[0158] Fig. 19 is a perspective view showing a state in which the connection module 850 according to the fourth embodiment is inserted and held in the through-hole 833h. Fig. 20 is a perspective view showing the connection module 850.

[0159] A connection module 850 according to the fourth embodiment has a rotation stopper piece 862 as a positioning portion instead of the brim-shaped protrusion 563 in the connection module 550 described above.

[0160] The rotation stop protrusion 862 protrudes from the cylindrical portion 562 toward the outer periphery. The rotation stop protrusion 862 may protrude from any position in the axial direction of the cylindrical portion 562. In this embodiment, the rotation stop protrusion 862 protrudes from the end of the cylindrical portion 562 on the first end 54 side. The rotation stop protrusion 862 may protrude partially in the circumferential direction of the cylindrical portion 562, or may protrude over the entire circumferential direction. In this embodiment, the rotation stop protrusion 862 protrudes over the entire circumferential direction of the cylindrical portion 562.

[0161] The tip of the rotation stop protrusion 862 has a rotation stop flat surface 862f parallel to the axial direction of the through hole 833h. In this embodiment, a part of the outer periphery of the rotation stop protrusion 862 is the rotation stop flat surface 862f. More specifically, the rotation stop protrusion 862 is a square annular plate-like portion protruding from the cylindrical portion 562 so that the outer periphery forms a square. The outward surface corresponding to at least one of the four peripheral sides of the rotation stop protrusion 862 is the rotation stop flat surface 862f. All of the four peripheral sides of the rotation stop protrusion 862 may be the rotation stop flat surface 862f.

[0162] Here, the area around through hole 833h in case 830 is formed as stepped portion 831 that is recessed from other portions. Plane 831f for forming the step is formed to recess step portion 831 relative to the surroundings. Plane 831f for forming the step faces the through hole 833h side.

[0163] When the plurality of through holes 833h are formed in a straight line in the case 830, the step portion 831 may be formed in a groove shape extending in the direction in which the plurality of through holes 833h are arranged. Such a step portion 831 may be easily formed by milling or the like.

[0164] With the columnar portion 562 passing through the through hole 833h, the rotation stop flat surface 862f comes into surface contact with the step forming flat surface 831f, thereby stopping the rotation of the housing 560 and the connection module 850.

[0165] The step forming plane 831f of the step portion 831 along the direction in which the plurality of through holes 833h are arranged can be used as a plane for preventing rotation of the connection module 850 in the three through holes 833h. Therefore, processing of the case 830 for preventing rotation is easier than when the shapes for the rotation prevention portion are processed separately for the plurality of through holes 833h.

[0166] In the fourth embodiment, rotation is more reliably prevented because the rotation-stopping flat surface 862f contacts the step-forming flat surface 831f at a position away from the cylindrical portion 562. In addition, the step-forming flat surface 831f can be easily formed on the case 830 by, for example, milling.

[0167] Fig. 21 is a perspective view showing a state in which a connection module 950 according to the fifth embodiment is passed through and held in a through hole 933h. Fig. 22 is an exploded perspective view showing a state before the connection module 950 is passed through and held in a through hole 933h. Fig. 23 is a partial cross-sectional view taken along line XXIII-XXIII in Fig. 21.

[0168] The connection module 950 includes a conductive part 152 and a housing 960 .

[0169] The conductive part 152 is the same as the conductive part 152 of the first modification of the first embodiment.

[0170] The housing 960 includes a first housing 962 and a second housing 964. The second housing 964 can be attached to the first housing 962 from a separate state.

[0171] More specifically, the first housing 962 is made of resin or the like, and has a columnar portion 962a and a first axial positioning portion 962b. The columnar portion 962a is formed in a cylindrical shape and is inserted into and held by the through-hole 933h.

[0172] The first axial positioning portion 962b protrudes outward from the outer periphery of the columnar portion 962a. The first axial positioning portion 962b contacts the case 930 from one axial side of the through hole 933h and restricts movement of the first housing 962 to the other axial side of the through hole 933h.

[0173] In this embodiment 5, the first axial positioning portion 962b is an annular portion that protrudes from the outer periphery of one end side of the cylindrical portion 962a toward the outer periphery. The first axial positioning portion 962b can contact one main surface of the case 930 at the opening periphery of the through hole 933h.

[0174] A cross-shaped protrusion 962c protrudes from the end of the columnar portion 962a opposite to the first axial positioning portion 962b. A second end 156 protrudes from the center of the protrusion 962c. A locking protrusion 962d that locks with the second housing 964 may be formed on the outward surface of the protrusion 962c.

[0175] The first housing 962 covers the intermediate portion 58 with the first end 53 and the second end 156 of the conductive part 152 protruding. The first housing 962 may be, for example, a part that is molded with the intermediate portion 58 of the conductive part 152 as an insert part.

[0176] The second housing 964 is a part that is molded from resin or the like, and has a receiving recess 965 and a terminal support portion 966 .

[0177] The receiving recess 965 is formed so that the end of the columnar portion 962a opposite to the first axial positioning portion 962b and the protrusion 962c can be fitted into the receiving recess 965. For example, the receiving recess 965 has a cylindrical portion 965a and a relative rotation restricting portion 965b.

[0178] The cylindrical portion 965a has a circular hole-shaped space into which the end of the columnar portion 962a opposite to the first axial positioning portion 962b can be fitted. The outer diameter of the cylindrical portion 965a is larger than the outer diameter of the through hole 933h. Thus, the end face portion of the cylindrical portion 965a can function as a second axial positioning portion 965ap that contacts the case 930 from the other axial side of the through hole 933h so as to restrict movement of the second housing 964 to one axial side of the through hole. In this manner, the second housing 964 has the second axial positioning portion 965ap.

[0179] The relative rotation restricting portion 965b has a cross-shaped recess into which the protrusion 962c can be fitted. With the end of the columnar portion 962a fitted into the cylindrical portion 965a, the protrusion 962c fits into the recess in the relative rotation restricting portion 965b, thereby restricting the relative rotation between the first housing 962 and the second housing 964. A recess into which the locking protrusion 962d fits may or may not be formed in the relative rotation restricting portion 965b. In the latter case, it is preferable that the first housing 962 or the second housing 964 is elastically deformed or the locking protrusion 962d is crushed, so that the locking protrusion 962d is pressed against the relative rotation restricting portion 965b.

[0180] The first housing 962 has an end through hole 962h through which the second end 156 passes. In this embodiment, the elongated end through hole 962h is formed in the relative rotation restricting portion 965b. With the protrusion 962c fitted into the recess in the relative rotation restricting portion 965b, the second end 156 protruding from the protrusion 962c passes through the end through hole 962h and protrudes from the relative rotation restricting portion 965b.

[0181] The second housing 964 has a setting recess 966g. The setting recess 966g is a recess in which a nut N, which is an example of a fastening part, is set. The nut N is a fastening part for fastening and fixing the second end 156 to the connection target part 156T. As described in the first embodiment, the connection target part 156T is a bus bar or terminal on the armature side, or a bus bar or terminal on the inverter side.

[0182] A hole is formed in the connection target part 156T, and a hole is also formed in the second end part 156. With the connection target part 156T and the second end part 156 overlapping each other, a bolt, which is a mating fastening part, is passed through the two holes and screwed into a nut, whereby the connection target part 156T and the second end part 156 are fastened and fixed in the overlapping state.

[0183] The set recess 966g is a recess formed in the terminal support portion 966. The terminal support portion 966 is formed in a partial cylindrical shape, for example, a semi-cylindrical shape, protruding from the relative rotation restricting portion 965b. The terminal support portion 966 has a terminal support surface 966f that extends to the outside of the end through-hole 962h along the axial direction of the cylindrical portion 962a. The second end portion 156 protruding from the end through-hole 962h is disposed on the terminal support surface 966f.

[0184] The set recess 966g is formed so as to be partially recessed in the terminal support surface 966f. The set recess 966g is formed in a shape capable of accommodating the nut N in a non-rotating state. For example, if the nut N is rectangular, the set recess 966g is formed in a rectangular recess. Depending on the shape of the nut N, the set recess 966g may be formed in a polygonal recess.

[0185] With the second end 156 positioned on the terminal support surface 966f, the position of the set recess 966g is set so that the screw hole of the nut N supported in the set recess 966g and the hole of the second end 156 are arranged coaxially.

[0186] The connection module 950 is passed through and held in the case 930 in the following manner.

[0187] That is, the nut N is fitted into the set recess 966g. The columnar portion 962a of the first housing 962 is inserted into the through hole 933h from one axial side of the through hole 933h. The first axial positioning portion 962b comes into contact with the case 930 from one axial side of the through hole 933h. This restricts the first housing 962 from moving toward the other axial side of the through hole 933h.

[0188] The second end 156 protrudes from the tip of the first housing 962, and the second end 156 is inserted through the end through-hole 962h, and the tip of the first housing 962 is fitted into the cylindrical portion 965a and the relative rotation restricting portion 965b. The locking protrusion 962d is locked into the relative rotation restricting portion 965b, whereby the first housing 962 and the second housing 964 are temporarily fixed together.

[0189] The second axial positioning portion 965ap of the second housing 964 comes into contact with the case 930 from the other axial side of the through hole 933h. This restricts the second housing 964 from moving to one axial side of the through hole 933h.

[0190] In the above state, the portion of the second end 156 that protrudes from the end through-hole 962h is placed on the nut N set in the setting recess 966g. Then, the connection target part 156T is placed on the second end 156, and the bolt B is threadedly fastened to the nut N through the second end 156 and the hole of the connection target part 156T.

[0191] As a result, the connection target component 156T is fastened and fixed to the second end 156, and electrically connected. In this state, the nut N is fixed at a fixed position relative to the second end 156, and the nut N is housed in the set recess 966g. The nut N prevents the second end 156 from slipping out of the end through hole 962h. In addition, since the nut N is housed in the set recess 966g, it can be said that the second housing 964 having the set recess 966g is restricted from moving in a direction away from the first housing 962. As a result, the first housing 962 and the second housing 964 are maintained in a combined state.

[0192] The set recess 966g can also serve to receive foreign matter generated when the bolt B is screwed into the nut N.

[0193] In this combined state, the first axial positioning portion 962b and the second axial positioning portion 965ap contact the case 930 from both axial sides of the through hole 933h. This restricts the housing 960, in which the first housing 962 and the second housing 964 are combined, from moving in the axial direction on both sides of the through hole 933h.

[0194] The configuration for keeping the first and second housings in a combined state is not limited to the above example. The first and second housings may be provided with a locking structure for keeping them in a combined state. The first and second housings may be kept in a combined state by adhesive, welding, or the like.

[0195] According to the fifth embodiment, the first housing 962 and the second housing 964 are configured to be combineable from a separated state, so that, for example, one of the first housing 962 and the second housing 964 can be inserted into the through hole 933h from one axial side thereof, and the other of the first housing 962 and the second housing 964 can be brought close to the other of the first housing 962 and the second housing 964 from the other axial side of the through hole 933h, thereby allowing the combination. This makes it possible to easily realize a configuration in which the first axial positioning portion 962b and the second axial positioning portion 965ap come into contact with the case 930 from both axial sides of the through hole 933h.

[0196] Furthermore, since the portion of the second end 156 that protrudes from the end through-hole 962h is disposed on the nut N set in the setting recess 966g, when the connection target component 156T and the second end 156 are fastened and fixed with the bolt B and the nut N, the nut N is fixed at a fixed position relative to the second end 156. Since the nut N is set in the setting recess 966g, the second housing 964 having the setting recess 966g is also held at a fixed position relative to the second end 156. Therefore, the first housing 962 and the second housing 964 are held in a combined state via the conductive component 152, the nut N, and the bolt B.

[0197] FIG. 24 is a schematic diagram showing a rotating electrical machine 1000 including the connection module 550. As shown in FIG.

[0198] The rotating electric machine 1000 includes a case 1030 and an armature 1002 located within the case 1030. The case 1030 has a case body 1032 that houses the armature 1002, and a circuit-side case 1034 that houses a circuit board such as an inverter. The circuit-side case 1034 is located on a part of the outer periphery of the case body 1032. The case body 1032 and the circuit-side case 1034 are separated by a partition wall 1040 that is aligned with the central axis X of the armature 1002 (which is also the rotation axis of the rotor).

[0199] A through hole 1042h is formed in the partition wall 1040, and the connection module 550 is held through the through hole 1042h.

[0200] The direction in which the connection module 550 penetrates may be from the armature 1002 side or from the circuit-side case 1034 side. In other words, the rotation stopper may come into contact with the case 1030 from either side.

[0201] Any of the above-mentioned connection modules may be passed through and held in the through-hole 1042h.

[0202] FIG. 25 is a schematic diagram showing a case 1130 of another rotating electric machine equipped with the above-mentioned connection module 550. In FIG.

[0203] The case 1130 differs from the case 1030 in that a partition wall 1140 is perpendicular to the central axis X.

[0204] A through hole 1142h is formed in the partition wall 1140, and the connection module 550 is held through the through hole 1142h.

[0205] In this way, since each connection module is small and can be assembled separately to the case, the layout freedom of the connection modules is improved. This makes it easier to set the positions of the connection modules in various positions, and improves the design freedom of the rotating electric machine.

[0206] Moreover, each connection module can be easily made versatile so that it can be mounted on rotating electrical machines of various layouts.

[0207] In each example of this embodiment, the shape of the end portion is arbitrary. For example, as described in the first embodiment, both ends of the conductive part may have a shape having fastening holes opening on the end surface. Also, both ends of the conductive part may have a plate shape having holes. Also, the end portion of the conductive part may be configured to have another electric wire, braided wire, etc. joined thereto by ultrasonic joining, laser welding, resistance welding, soldering, etc.

[0208] The configurations of the above-mentioned first to fourth embodiments may be applied to the fifth embodiment, and the connection module may be prevented from rotating and positioned on both sides of the through-hole in the penetration direction.

[0209] The configurations described in the above embodiments, modifications, and examples can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]

[0210] 20. Integrated electromechanical unit 26 Control Board 27, 227 External bus bar terminal 30, 530, 630, 730, 830, 930, 1030, 1130 cases 31, 36 Lid 32 Cylinder case body 32S space 32h opening 33 Partition 33S space 33h, 533h, 633h, 733h, 833h, 933h, 1042h, 1142h through hole 34 Partition side wall 35 Expansion Space Formation Section 40 Rotating Electric Machine 42, 1002 Armature 46a Coil wire 47, 347 Interconnection parts 47a Disc-shaped part 47b Extension 47h Screw insertion hole 48 Field magnet 49 Rotating Shaft 50, 150, 250, 350, 450, 550, 650, 750, 850, 950 Connection Module 52, 152, 252, 352, 452 Conductive parts 54, 354, 454 1st end 54f end face 54h Fastening hole 56, 156, 256, 356, 456 2nd end 56fa fastening plane 56fb, 256f Opposite end face 56h, 256h Opposite side fastening holes 58, 458 Middle section 60, 160, 260, 360, 464, 560, 660, 760, 960 Housing housing 60g circumferential groove 61 Positioning protrusion 62 Peripheral wall part 62g Concave 64 Receiving 68, 568 Elastic ring 156a, 454a, 456a Disc-shaped part 156b, 454b, 456b Nut 347a electric wire 354a Square plate section 470, 472 Target connection parts 533h1, 633h1 Hole body part 533h2, 633h2 Opening edge forming surface 533h2a bottom 533h2b Inner surface 562, 962a Cylindrical part 562g Annular groove 563, 663 Flange 563a End face 563b Outer surface 633h2f Receiving side tapered surface 734h Positioning hole 762 Positioning part 763 Pin support piece 764 Pin-shaped part 831 Step 831f plane 862 Rotation stopper piece 862f Anti-rotation plane 962 1st Housing 962b First axial positioning part 962c protrusion 962d Locking protrusion 962h End through hole 964 2nd Housing 965 Receiving recess 965a Cylindrical section 965ap Second axial positioning part 965b Relative rotation restriction part 966 Terminal support part 966f Terminal support surface 966g Set recess 1000 Rotating Electric Machine 1032 Case body 1034 Circuit side case 1040, 1140 Partition wall A1, A2, B1, B2 center axis B Bolt N Nut S Screw X central axis (rotation axis)

Claims

1. A connection module for a rotating electric machine including an armature and a case that houses the armature, a conductive part including a first end, a second end, and an intermediate part located between the first end and the second end and passing through a through hole of the case; a housing covering the conductive part; Equipped with the housing covers the conductive component with at least a portion of the first end and at least a portion of the second end exposed; The housing is a portion that is passed through and held by the through hole, A connection module in a rotating electric machine, wherein the housing has a positioning portion that contacts the case so as to restrict rotation around the axis of the through hole or movement to both sides in the axial direction of the through hole.

2. A connection module for a rotating electric machine according to claim 1, A connection module in a rotating electric machine, wherein the positioning portion is a rotation prevention portion that contacts the case so as to restrict rotation around the axis of the through hole.

3. A connection module for a rotating electric machine according to claim 2, the housing has a cylindrical portion that is inserted into the through hole while covering the conductive component, the rotation stopper portion has a pin support piece that protrudes from the cylindrical portion toward an outer periphery thereof, and a pin-shaped portion that protrudes from the pin support piece along an axial direction of the through hole, A connection module for a rotating electric machine, wherein the pin-shaped portion is inserted into a positioning hole formed in the housing with the cylindrical portion passing through the through hole.

4. A connection module for a rotating electric machine according to claim 2, the housing has a cylindrical portion that is inserted into the through hole while covering the conductive component, The rotation stopper has a rotation stopper piece that protrudes from the cylindrical portion toward the outer periphery, The tip of the rotation stopper piece has a rotation stopper plane parallel to the axial direction of the through hole, A connection module for a rotating electric machine, wherein the rotation stop flat surface contacts a step-forming flat surface formed on the housing when the cylindrical portion passes through the through hole.

5. A connection module for a rotating electric machine according to claim 2, the housing has a cylindrical portion that is inserted into the through hole while covering the conductive component, The rotation stopper has a flange-shaped protrusion protruding from the cylindrical portion toward an outer periphery, The flange-shaped protrusion is eccentric with respect to the cylindrical portion, A connection module in a rotating electric machine, in which, with the cylindrical portion passing through the through hole, the flange-shaped protrusion is fitted into an opening edge forming surface formed eccentrically with respect to the through hole at the opening of the through hole in the housing.

6. A connection module for a rotating electric machine according to claim 5, The flange-shaped protrusion has a tapered surface that gradually reduces in diameter toward the through hole, The opening edge forming surface has a receiving side tapered surface that gradually widens toward the outside, A connection module for a rotating electric machine, wherein the tapered surface contacts the receiving tapered surface with the cylindrical portion passing through the through hole.

7. A connection module for a rotating electric machine according to claim 5, The flange-shaped protrusion has an end surface facing the through hole and an outer circumferential surface facing the opposite side to the through hole from the periphery of the end surface, The opening edge forming surface has a bottom surface facing outward and an inner peripheral surface facing outward from a periphery of the bottom surface, A connection module for a rotating electric machine, wherein, when the cylindrical portion penetrates the through hole, the end face contacts the bottom surface and the outer peripheral surface contacts the inner peripheral surface.

8. A connection module for a rotating electric machine according to claim 1, The housing includes a first housing and a second housing that is coupled to the first housing from a separate state, the positioning portion has a first axial positioning portion that contacts the case from one axial side of the through hole and a second axial positioning portion that contacts the case from the other axial side of the through hole so as to restrict movement of the through hole to both axial sides, A connection module for a rotating electric machine, wherein the first housing has the first axial positioning portion and the second housing has the second axial positioning portion.

9. A connection module for a rotating electric machine according to claim 8, the first housing covers the conductive component with the second end protruding, A connection module in a rotating electric machine, wherein the second housing has an end through hole through which the second end passes and a set recess in which a fastening part for fastening the second end to a component to be connected is set, and a portion of the second end protruding from the end through hole is positioned on the fastening part set in the set recess.

10. A case having a through hole; an armature located within the case; a connection module for a rotating electric machine according to any one of claims 1 to 9, the connection module passing through the through hole and electrically connecting the conductive member on the armature side to a conductive part outside the case; A rotating electric machine comprising:

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