Terminal module

Abstract

The purpose of the present invention is to make it possible to easily position a coil wire-side connection end at a coil end. A terminal module in a rotating electrical machine having an armature, the terminal module being provided with a holding member disposed at an end of the armature, the holding member having a positioning hole into which a coil wire-side connection end extending to the end of the armature can be inserted. The positioning hole has a positioning reference inner surface and a pressing inner surface facing the positioning reference inner surface, and the pressing inner surface has a local protrusion.

Description

Technical Field

[0001] The present disclosure relates to terminal modules. Background Art

[0002] Patent Document 1 discloses a stator for a rotating electrical machine having a coil connection device comprising a retaining member made of an insulating material and a plurality of busbars held by the retaining member at intervals. The retaining member is fixed to the ends of the coil assembly, i.e., the coil ends, in the axial direction of the stator armature. A slot is formed in the retaining member into which a connecting portion between the coils is inserted. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2022-127070 Summary of the Invention Problems to be solved by the invention

[0004] It is difficult to hold the coil wire in a fixed position in the groove of the holding member disclosed in Patent Document 1. Therefore, when connecting the coil wire to other conductors, it is considered necessary to prepare a separate positioning jig, which may increase manufacturing costs.

[0005] Therefore, an object of the present disclosure is to enable easy positioning of a coil wire-side connecting end portion at a coil end. Solutions to Problems

[0006] The terminal module disclosed herein is a terminal module in a rotating electrical machine having an armature, wherein the terminal module includes a retaining member arranged at the end of the armature, the retaining member having a positioning hole into which a coil wire-side connection end extending to the end of the armature can be inserted, the positioning hole having a positioning reference inner surface and a pressing inner surface opposite to the positioning reference inner surface, the pressing inner surface having a local protrusion. Effects of the Invention

[0007] According to the present disclosure, the coil wire side connection end portion can be easily positioned at the coil end. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a perspective view showing a rotating electrical machine according to the embodiment. Figure 2 It is a perspective view showing a terminal module. Figure 3 It is a perspective view showing one end portion of the terminal block. Figure 4 It is a perspective view showing one end portion of the terminal block. Figure 5 yes Figure 3 V-V line cross-sectional view. Figure 6 yes Figure 3 Partial cross-sectional view along line V-V. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described by way of examples.

[0010] The terminal module of the present disclosure is as follows.

[0011] (1) A terminal module is a terminal module in a rotating electrical machine having an armature, wherein the terminal module includes a retaining member arranged at an end of the armature, the retaining member having a positioning hole into which a coil wire-side connecting end extending to the end of the armature can be inserted, the positioning hole having a positioning reference inner surface and a pressing inner surface opposite to the positioning reference inner surface, the pressing inner surface having a local protrusion.

[0012] According to the present disclosure, the coil wire side connection end portion can be placed in a state where the protrusion presses the coil wire side connection end portion against the inner surface of the positioning reference while the coil wire side connection end portion is inserted into the positioning hole.

[0013] (2) Based on the terminal module of (1), the terminal module may also include a bus bar connected to the coil wire side connection end extending to the end of the armature, the bus bar having a bus bar side connection end engaged with the coil wire side connection end, the retaining member retains the bus bar in a state where the bus bar side connection end is exposed, and the positioning hole is formed along a direction to guide the inserted coil wire side connection end toward the bus bar side connection end.

[0014] Thereby, the coil wire side connection end portion inserted into the positioning hole can be guided toward the bus bar side connection end portion.

[0015] (3) In the terminal module of (2), the holding member may hold the bus bar so that the bus bar-side connection end portion is located on the opposite side of the armature relative to the positioning hole.

[0016] Thus, the coil wire-side connection end portion pulled out from the positioning hole can be easily joined to the bus bar-side connection end portion on the opposite side of the armature.

[0017] (4) In the terminal module of (3), the holding member may hold the bus bar so that a surface of the bus bar-side connection end portion connected to the coil wire-side connection end portion is positioned away from the holding member.

[0018] In this case, heat generated when joining the bus bar-side connection end portion and the coil wire-side connection end portion is less likely to be transferred to the holding member.

[0019] (5) Based on the terminal module of any one of (2) to (4), the retaining member may retain the bus bar in such a manner that the surface of the bus bar side connection end portion connected to the coil wire side connection end portion is arranged on an extension line of the positioning reference inner surface.

[0020] As a result, the coil wire-side connection end portion positioned by the positioning reference inner surface is positioned so as to come into surface contact with the bus bar-side connection end portion.

[0021] (6) In the terminal module according to any one of (1) to (5), the distance between the positioning reference inner surface and the protrusion may be smaller than the thickness of the coil wire-side connection end portion.

[0022] In this case, when the coil wire side connection end portion is inserted into the positioning hole, the protrusion is crushed and the coil wire side connection end portion is pressed against the inner surface of the positioning reference for positioning.

[0023] (7) In the terminal module according to any one of (1) to (5), the distance between the positioning reference inner surface and the protrusion may be equal to the thickness of the coil wire-side connection end portion.

[0024] In this case, the protrusion can be used to press the coil wire connection end against the inner surface of the positioning reference. This makes it easier to position the coil wire connection end at the coil end. Furthermore, since the protrusion does not need to be flattened, the insertion force when inserting the coil wire connection end into the positioning hole can be reduced.

[0025] (8) In the terminal module according to any one of (1) to (7), the protrusion may be adjacent to an outlet opening of the positioning hole in the pressing inner surface.

[0026] Thus, the coil wire side connection end portion can be pressed against the positioning reference inner surface at the exit of the positioning hole, making it easier to more accurately position the portion of the coil wire side connection end portion protruding from the positioning hole.

[0027] (9) In the terminal module according to any one of (1) to (8), the pressing inner surface may include a plurality of protrusions, and the plurality of protrusions may be arranged at intervals in the width direction of the coil wire side connection end portion.

[0028] Thus, the coil wire-side connecting end portion can be stably pressed against the positioning reference inner surface by the plurality of protrusions.

[0029] (10) In the terminal module according to any one of (1) to (9), the holding member may include a guide surface that extends in a manner that gradually expands from the positioning hole toward the armature.

[0030] In this case, since the coil wire side connection end portion is guided toward the positioning hole by the guide surface, the coil wire side connection end portion can be easily inserted into the positioning hole.

[0031] [Details of the embodiments of the present disclosure] Hereinafter, specific examples of the terminal module of the present disclosure will be described with reference to the accompanying drawings. 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.

[0032] [Implementation Method] Hereinafter, an end block according to an embodiment will be described. In this embodiment, an example in which an end block is incorporated into a rotating electrical machine will be described.

[0033] Overall Structure The overall structure of the rotating electrical machine will be described. Figure 1 It is a perspective view showing a rotating electrical machine.

[0034] The rotating electrical machine 10 includes a device case 12, an armature 20, and a field magnet 18. The rotating electrical machine 10 may be a motor or a generator.

[0035] The device case 12 includes a bottomed cylindrical case body 13 and a cover 14. An armature 20 serving as a stator is housed in the case body 13. A field magnet 18 serving as a rotor is disposed in the armature 20.

[0036] The armature 20 includes a coil, and the field magnet 18 includes a permanent magnet. The magnetic field generated by the armature 20 causes the field magnet 18 to rotate about the rotation axis X, or the rotation of the field magnet 18 generates an electromotive force in the armature 20.

[0037] The armature 20 is formed in an annular shape. The armature 20 includes a coil wire 22. The coil wire 22 is a linear conductive member made of copper wire or the like.

[0038] The coil wire 22 may also be wound around the armature core 24. For example, the armature core 24 includes a plurality of teeth. These teeth are arranged so as to surround the rotation axis X, thereby forming the armature core 24 in a ring shape. Gaps are provided between the teeth around the rotation axis X. The coil wire 22 is arranged between the teeth so as to extend parallel to the rotation axis X.

[0039] The end of the coil wire 22 is a coil wire side connection end 23 extending from between the teeth to the end of the armature 20. A portion of the coil wire side connection end 23 is sometimes connected to other coil wire side connection ends 23 so that the coil wire 22 between the teeth forms a coil. For example, the coil wire side connection end 23 extending from between the teeth in the coil wire 22 is bent and overlapped with the other coil wire side connection end 23 that becomes the connection object. In addition, a plurality of coil wire side connection ends 23 are connected to each other. For example, the coil wire side connection end 23 can be connected to each other by welding, etc., or can be directly connected by integral formation, or can be connected via a conductive member provided at the end of the armature core 24.

[0040] The terminal block 30 is located on one end surface of the armature core 24. Another portion of the coil wire-side connection end portion 23 may be connected to an external device via the terminal block 30. For example, the external device is an inverter that controls the rotating electrical machine 10. Another portion of the coil wire-side connection end portion 23 may also be connected to another coil wire-side connection end portion 23 via the terminal block 30.

[0041] The housing body 13 surrounds the periphery and the other end of the armature 20. The housing body 13 is open at one end of the armature 20. The end block 30 is disposed at one end of the armature 20. The cover 14 covers the armature 20 from the end block 30 side.

[0042] The external lead terminals 28 connected to the terminal block 30 penetrate the case body 13 or the cover 14 and are exposed to the outside. The inverter device is connected to the coil wire 22 via the external lead terminals 28 and the terminal block 30 .

[0043] As described above, a coil wire connection end portion 23 extends from the end of the armature 20. In this embodiment, the coil wire 22 is a flat conductor having a rectangular cross-section (a cross-section taken on a plane perpendicular to the extension direction) that is long in one direction. The coil wire connection end portion 23 includes an inclined portion 23a and a straight portion 23b. The inclined portion 23a is a portion extending from the armature core 24 and bent along the circumference of the armature core 24 so as to intersect with the rotation axis X. The straight portion 23b is a portion extending along the rotation axis X at a position closer to the top end of the inclined portion 23a.

[0044] The straight portion 23b is a portion of the flat conductor portion. Therefore, the straight portion 23b has a pair of long side surfaces 23bf1 corresponding to a pair of long sides in the cross section and a pair of short side surfaces 23bf2 corresponding to a pair of short sides (see Figure 3). That is, the straight portion 23b of the coil wire-side connecting end portion 23 is formed into an elongated rectangular parallelepiped extending in a direction parallel to the rotation axis X. The inclined portion 23a may be omitted. The long side surface 23bf1 and the short side surface 23bf2 may be connected to form an angle or to form a curved surface.

[0045] As described above, at least a portion of the coil wire side connection end portion 23 is connected to other coil wire side connection end portions 23 or to the external lead terminal 28 via the terminal block 30 .

[0046] The following description will focus on the terminal module 30 .

[0047] About terminal modules Figure 2 3 is a perspective view showing the terminal module 30. Figure 2 , the coil wire side connection end portion 23 connected to the terminal block 30 is shown.

[0048] The terminal block 30 includes a retaining member 40 that is positioned at the end of the armature 20. The retaining member 40 is a component molded from resin. The retaining member 40 is formed into a plate shape that can be positioned at the end of the armature 20. Here, the retaining member 40 is formed into an arc-shaped plate that extends along the annular end of the armature 20. The retaining member 40 is held in a fixed position outside the end of the armature 20 by, for example, the coil wire-side connecting end 23.

[0049] The holding member 40 has a positioning hole 44 formed therein, into which the coil-wire-side connecting end portion 23 can be inserted. The positioning hole 44 extends in the direction of the rotation axis X and penetrates both sides of the holding member 40. By inserting the coil-wire-side connecting end portion 23 into the positioning hole 44, the coil-wire-side connecting end portion 23 is precisely held in a fixed position.

[0050] In this embodiment, the terminal module 30 includes bus bars 50U, 50V, 50W, and 60 connected to the coil wire-side connection end portion 23. The bus bars 50U, 50V, 50W, and 60 are conductive members formed by, for example, stamping a metal plate.

[0051] The bus bars 50U, 50V, and 50W respectively correspond to the U-phase, V-phase, and W-phase of the coil wires 22. The bus bar 60 is a bus bar for connecting the coil wires 22 at a neutral point.

[0052] More specifically, the bus bar 50U has a bus bar side connection end portion 50Ua, an external connection end portion 50Ub, and an intermediate connection portion 50Uc. The intermediate connection portion 50Uc is formed in an arc shape within the holding member 40 and can be arranged along the holding member 40 (see FIG. Figure 5The busbar-side connection end portion 50Ua is a slender, plate-like portion that branches from the end portion or middle portion of the intermediate connection portion 50Uc. In this embodiment, multiple busbar-side connection end portions 50Ua extend from the intermediate connection portion 50Uc and are positioned so as to contact the coil wire-side connection end portion 23 to be connected. The external connection end portion 50Ub extends from the end portion or middle portion of the intermediate connection portion 50Uc toward the side opposite the armature 20.

[0053] The bus bar 50U is held by the holding member 40 with the bus bar connection end 50Ua and the external connection end 50Ub exposed to the outside.

[0054] The coil wire side connection end portion 23 is connected to the bus bar side connection end portion 50Ua and the external connection end portion 50Ub is connected to the external lead terminal 28 , whereby the coil wire 22 is connected to the U-phase terminal of the inverter device via the bus bar 50U and the external lead terminal 28 .

[0055] Busbars 50V and 50W are constructed similarly to busbar 50U, except for the arrangement of the busbar-side connection ends and the external connection ends. The three-phase correspondence of busbars 50U, 50V, and 50W shown in this embodiment is for illustration only. For example, the busbar located at the position illustrated as busbar 50U could be a busbar for either the V phase or the W phase. The connection structure between the coil-side connection end 23 and the busbar-side connection end 50Ua, described later, is applicable to the connection structure between the busbar-side connection end and the coil-side connection end of busbars 50V and 50W.

[0056] The bus bar 60 has a bus bar side connection end portion 60a and an intermediate connection portion 60c. The intermediate connection portion 60c is formed in an arc shape in the holding member 40 so as to be arranged along the holding member 40 (see FIG. Figure 5 The busbar-side connection end portion 60a is a slender plate-shaped portion that branches from the end portion or the middle portion of the extension direction of the intermediate connection portion 60c. In this embodiment, multiple busbar-side connection end portions 60a extend from the intermediate connection portion 60c and are arranged in a position where they can contact the coil wire-side connection end portion 23 to be connected.

[0057] The bus bar 60 is held by the holding member 40 with the bus bar side connection end portion 60a exposed to the outside. When the bus bar 60 is held by the holding member 40, the bus bar side connection end portion 60a is connected to the coil wire side connection end portion 23.

[0058] The plurality of coil wire side connection end portions 23 are respectively connected to the corresponding plurality of bus bar side connection end portions 60 a , whereby the plurality of coil wire side connection end portions 23 are connected at a neutral point via the bus bar 60 .

[0059] The plurality of bus bar-side connection end portions 50Ua of the bus bar 50U, the plurality of bus bar-side connection end portions of the bus bars 50V and 50W, and the bus bar-side connection end portion 60a of the bus bar 60 are arranged in an arc shape on the inner and outer circumferential sides of the retaining member 40. Positioning holes 44 are formed at positions corresponding to the plurality of bus bar-side connection end portions 50Ua of the bus bar 50U, the plurality of bus bar-side connection end portions of the bus bars 50V and 50W, and the bus bar-side connection end portion 60a of the bus bar 60.

[0060] The positioning holes 44 are formed along a direction that guides the inserted coil wire connection end portion 23 toward the bus bar connection end portions 50Ua, 60a, etc. For example, when viewed in the axial direction, the positioning holes 44 are located next to any of the bus bar connection end portions 50Ua, 60a, etc. As a result, the coil wire connection end portion 23 inserted into the positioning holes 44 is removed from the retaining member 40 and guided toward the bus bar connection end portions 50Ua, 60a, etc.

[0061] The relationship between the positioning hole 44 and the bus bar side connection end portion 50Ua and the bus bar side connection end portion 60a will be described in more detail with attention paid to one end portion of the terminal module 30 .

[0062] Figure 3 and Figure 4 It is a perspective view showing one end portion of the terminal module 30 . Figure 3 This is a perspective view viewed from the side opposite to the armature 20. Figure 4 This is a perspective view viewed from the armature 20 side. Figure 3 and Figure 4 , the coil wire side connection end portion 23 before insertion is shown. Figure 5 yes Figure 3 V-V line cross-sectional view. Figure 6 It is shown in Figure 3 FIG is a diagram showing a state in which the coil wire side connection end portion 23 and the bus bar side connection end portion 50Ua are connected in a partial cross section taken along line V-V. Figure 6 In FIG. 1 , the shape of the protrusion 47 before being flattened is shown by two-dot chain lines.

[0063] As described above, the positioning hole 44 is a through-hole into which the coil wire connection end 23 can be inserted. The coil wire connection end 23 is a flat, rectangular cross-section. Therefore, it is assumed that the positioning hole 44 is formed as a continuous rectangular hole extending in one direction, so that the coil wire connection end 23 can be inserted. The inner circumference of the positioning hole 44 can have a right angle or a curved surface.

[0064] The inner circumference of the positioning hole 44 is surrounded by a pair of long-side surfaces and a pair of short-side sides. One of the pair of long-side surfaces is a positioning reference inner surface 45 , and the other is a pressing inner surface 46 facing the positioning reference inner surface 45 .

[0065] The positioning reference inner surface 45 may also be a plane. For example, the positioning reference inner surface 45 may also be a plane parallel to the rotation axis X. The pressing inner surface 46 has a local protrusion 47. More specifically, the pressing inner surface 46 has a main inner surface 46f and the protrusion 47. The main inner surface 46f is a flat surface that faces the positioning reference inner surface 45 at a distance. The main inner surface 46f and the positioning reference inner surface 45 may be in a parallel positional relationship.

[0066] The protrusion 47 partially protrudes from the main inner surface 46f. The positioning reference inner surface 45 and the main inner surface 46f extend over the entire long side of the positioning hole 44, and the protrusion 47 partially protrudes from the long side. Therefore, considering that the retaining member 40 is formed from the same resin, the local protrusion 47 can be easily crushed relative to the positioning reference inner surface 45.

[0067] The dimension of the positioning hole 44 in the short-side direction is the distance between the main inner surface 46f of the pressing inner surface 46 and the positioning reference inner surface 45. This dimension in the short-side direction may be the same as the dimension of the coil wire side connection end portion 23 in the short-side direction, or it may be larger than the dimension of the coil wire side connection end portion 23 in the short-side direction. The dimension of the positioning hole 44 in the short-side direction is preferably larger than the dimension of the coil wire side connection end portion 23 in the short-side direction.

[0068] The dimension of the positioning hole 44 in the longitudinal direction may be the same as the dimension of the coil wire side connection end portion 23 in the longitudinal direction, or may be larger than the dimension of the coil wire side connection end portion 23 in the longitudinal direction. The dimension of the positioning hole 44 in the longitudinal direction may also be large enough to support the coil wire side connection end portion 23 without shaking in the longitudinal direction.

[0069] The shape of the protrusion 47 is arbitrary. For example, the protrusion 47 may be in the following shape. The protrusion 47 may be in the shape of an elongated protrusion extending along the rotation axis X. The end of the protrusion 47 on the armature 20 side may be formed into a riding shape portion 47a (see FIG. 1 ) whose height gradually decreases as it moves toward the armature. Figure 5 ). As a result, the coil wire side connecting end portion 23 can easily ride on the protrusion 47 from the armature 20 side.

[0070] The cross-sectional shape of the protrusion 47 is arbitrary, and may be triangular, quadrilateral, or semicircular.

[0071] The position of protrusion 47 is arbitrary. Protrusion 47 may also be adjacent to the outlet opening of positioning hole 44 in pressing inner surface 46. The outlet opening of positioning hole 44 is the opening on the side of the two end openings of positioning hole 44 from which the coil wire-side connecting end portion 23 extends, and is located on the opposite side of armature 20. Protrusion 47 being adjacent to the outlet opening of positioning hole 44 means, for example, that the outlet-side end surface of protrusion 47 is connected to the end surface of retaining member 40 surrounding the outlet opening of positioning hole 44.

[0072] If the protrusion 47 is adjacent to the outlet opening of the positioning hole 44 in the pressing inner surface 46 , the position of the coil wire-side connecting end portion 23 protruding from the positioning hole 44 can be easily regulated.

[0073] The protruding length of the protrusion 47 is arbitrary. The gap G between the positioning reference inner surface 45 and the protrusion 47 is preferably smaller than the thickness T of the coil wire side connection end portion 23 (see Figure 5 In this case, when the coil wire side connection end portion 23 is inserted into the positioning hole 44 , the protrusion 47 is crushed, making it easier to position the coil wire side connection end portion 23 using the positioning reference inner surface 45 .

[0074] The gap G between the positioning reference inner surface 45 and the protrusion 47 may be the same as the thickness T of the coil wire side connection end portion 23. In this case, when the coil wire side connection end portion 23 is inserted into the positioning hole 44, the protrusion 47 presses the coil wire side connection end portion 23 toward the positioning reference inner surface 45, thereby enabling positioning by the positioning reference inner surface 45.

[0075] The number of protrusions 47 formed on the pressing inner surface 46 is arbitrary. The pressing inner surface 46 may have a plurality of protrusions 47 arranged at intervals in the width direction of the coil wire-side connecting end portion 23 .

[0076] In this case, the plurality of protrusions 47 can press the coil wire side connection end portion 23 toward the positioning reference inner surface 45 at different positions in the width direction of the coil wire side connection end portion 23. As a result, the coil wire side connection end portion 23 can easily make surface contact with the positioning reference inner surface 45, and the coil wire side connection end portion 23 is more reliably positioned in a fixed position by the positioning reference inner surface 45. In this embodiment, the two protrusions 47 are arranged at intervals in the width direction of the pressing inner surface 46. The two protrusions 47 are preferably arranged in left-right symmetrical positions in the width direction of the pressing inner surface 46.

[0077] The retaining member 40 may also include guide surfaces 48 that extend in a manner that gradually expands from the positioning hole 44 toward the armature 20. The guide surfaces 48 may extend from all sides of the square-shaped positioning hole 44, or from a portion of the sides. In this embodiment, the guide surfaces 48 extend from all four sides of the positioning hole 44. The guide surfaces 48 extending from the four side surfaces of the positioning hole 44 may be of the same length or different lengths. In this embodiment, the guide surface 48 located at the center of the width direction of the holding member 40 is shorter than the other guide surfaces.

[0078] The coil wire side connection end portion 23 is guided to the positioning hole 44 by the guide surface 48. Thus, the coil wire side connection end portion 23 is easily inserted into the positioning hole 44.

[0079] The holding member 40 holds the bus bars 50U, 60 so that the bus bar-side connecting end portions 50Ua, 60a are located on the opposite side of the armature 20 with respect to the positioning hole 44 .

[0080] More specifically, the intermediate connection portion 50Uc extends in a direction perpendicular to the rotation axis X. The intermediate connection portion 50Uc is located on the outer circumference side of the positioning hole 44 on the inner circumference side. The busbar side connection end portion 50Ua is bent toward the opposite side of the armature 20 at the inner circumference side of the intermediate connection portion 50Uc and extends in the direction of the rotation axis X (see FIG. Figure 5 Thus, the bus bar side connection end portion 50Ua is located on the opposite side of the armature 20 with respect to the positioning hole 44 .

[0081] The intermediate connection portion 60c also extends in a direction perpendicular to the rotation axis X. The intermediate connection portion 60c is located on the inner circumference side of the positioning hole 44 on the outer circumference side. The busbar side connection end portion 60a is bent toward the opposite side of the armature 20 at the inner circumference side of the intermediate connection portion 60c and extends in the direction of the rotation axis X (see Figure 5 Thus, the bus bar-side connecting end portion 60 a is located on the opposite side of the armature 20 with respect to the positioning hole 44 .

[0082] The surface of the bus bar side connection end portions 50Ua, 60a that is connected to the coil wire side connection end portion 23 is preferably arranged on an extension line of the positioning reference inner surface 45 (see Figure 5 For example, the surface 50Uaf of the bus bar side connection end portion 50Ua that is connected to the coil wire side connection end portion 23 is a surface on the inner circumference of the end portion of the bus bar side connection end portion 50Ua that is bent relative to the intermediate connection portion 50Uc and extends along the rotation axis X.

[0083] Thus, the coil wire side connection end portion 23 positioned by the positioning reference inner surface 45 is guided so as to be in stable surface contact with the surface 50Uaf of the bus bar side connection end portions 50Ua, 60a and the like (see FIG. Figure 5 line L).

[0084] Furthermore, the surfaces 50Uaf of the bus bar-side connection ends 50Ua and 60a may be offset from the positioning reference inner surface 45 within an allowable tolerance range (for example, ±0.2 mm) due to manufacturing errors and the like.

[0085] Alternatively, the surfaces 50Uaf and the like of the bus bar-side connection ends 50Ua and 60a may be located closer to the pressing inner surface 46 than the extension of the positioning reference inner surface 45. In this case, the coil wire-side connection end 23 pressed by the positioning reference inner surface 45 is easily pressed against the surfaces 50Uaf and the like of the bus bar-side connection end 50Ua and 60a.

[0086] The surface 50Uaf of the busbar-side connection end portion 50Ua that is connected to the coil wire-side connection end portion 23 may be positioned away from the retaining member 40. For example, the busbar-side connection end portion 50Ua is bent while drawing an arc relative to the intermediate connection portion 50Uc, thereby being aligned with the rotation axis X. The busbar-side connection end portion 50Ua includes an arc-bent portion 50Uav on the base end side of the surface 50Uaf along the rotation axis X. This arc-bent portion 50Uav is bent so as to separate from the surface on the outlet opening side of the positioning hole 44 in the retaining member 40, and the surface 50Uaf located at the top end thereof is separated from the retaining member 40.

[0087] In this case, a gap is provided between the bent portion 50Uav of the bus bar-side connection end portion 50Ua and the coil wire-side connection end portion 23 near the exit of the positioning hole 44. Furthermore, the top end surface 50Uaf of the bus bar-side connection end portion 50Ua and the coil wire-side connection end portion 23 are in contact with each other at a position separated from the holding member 40.

[0088] The top end surface 50Uaf of the busbar-side connecting end portion 50Ua is joined to the coil wire-side connecting end portion 23. The joining is achieved, for example, by resistance welding, ultrasonic welding, or soldering. Since the joining portion is located at a position separated from the retaining member 40, even if heat energy for joining is applied to the joining portion, the heat is unlikely to be transferred to the retaining member 40. This prevents the heat from affecting the retaining member 40 during joining.

[0089] However, it is not essential to separate the joining portion between the bus bar-side connection end portion and the coil wire-side connection end portion from the holding member as described above.

[0090] Furthermore, the surface of the bus bar side connection end portion that is connected to the coil wire side connection end portion may be the outer peripheral surface of the bus bar side connection end portion or the end surface of the bus bar side connection end portion. <Effects, etc.> According to the terminal module 30 constructed as described above, the positioning hole 44 has a positioning reference inner surface 45 and a pressing inner surface 46, and the pressing inner surface 46 has a local protrusion 47. Therefore, when the coil wire side connection end portion 23 is inserted into the positioning hole 44, the coil wire side connection end portion 23 can be pressed against the positioning reference inner surface 45 by the protrusion 47. As a result, the coil wire side connection end portion 23 can be easily positioned at the end of the coil included in the armature 20, that is, the coil end. If the coil wire side connection end portion 23 can be easily positioned, the operation of connecting the coil wire side connection end portion 23 to other conductive members can be easily performed.

[0091] The retaining member 40 holds the busbars 50U, 50V, 50W, and 60 with the busbar-side connection ends 50Ua, 60a, and the like exposed. The positioning holes 44 guide the coil-wire-side connection ends 23 toward the busbar-side connection ends 50Ua, 60a, and the like. In this manner, the busbar-side connection ends 50Ua, 60a, and the like can be easily joined to the coil-wire-side connection ends 23 without using a separate positioning jig for the retaining member 40 of the busbars 50U, 50V, 50W, and 60. This makes it possible to easily and accurately join multiple coil-wire-side connection ends 23 to the busbar-side connection ends 50Ua, 60a, and the like, while reducing manufacturing costs.

[0092] Furthermore, the holding member 40 holds the bus bars 50U, 50V, 50W, and 60 so that the bus bar-side connection end portions 50Ua, 60a, and the like are located on the side opposite to the armature 20 with respect to the positioning hole 44. Therefore, compared to a case where the bus bar-side connection end portions are located on the armature side, the bus bar-side connection end portions 50Ua, 60a, and the like can be joined to the coil wire-side connection end portion 23 on the side opposite to the armature 20.

[0093] Furthermore, the holding member 40 holds the bus bars 50U, 50V, 50W, and 60 so that the surfaces 50Uaf and the like of the bus bar-side connection end portions 50Ua, 60a, etc., which are connected to the coil wire-side connection end portion 23, are positioned away from the holding member 40. Therefore, heat generated when the bus bar-side connection end portions 50Ua, 60a, etc. are joined to the coil wire-side connection end portion 23 is less likely to be transferred to the holding member 40, thereby suppressing the influence of heat on the holding member 40.

[0094] Furthermore, the holding member 40 holds the bus bars 50U, 50V, 50W, and 60 so that the surfaces 50Uaf and the like of the bus bar-side connection end portions 50Ua, 60a, etc., which are connected to the coil wire-side connection end portions 23, are arranged on an extension line of the positioning reference inner surface 45. Therefore, the coil wire-side connection end portions 23, which are positioned by the positioning reference inner surface 45, are positioned so as to be in stable surface contact with the bus bar-side connection end portions 50Ua, 60a, etc.

[0095] Furthermore, the gap G between the positioning reference inner surface 45 and the protrusion 47 is smaller than the thickness T of the coil wire side connection end portion 23. Therefore, when the coil wire side connection end portion 23 is inserted into the positioning hole 44, the protrusion 47, which is more easily crushed than the positioning reference inner surface 45, is crushed, and the coil wire side connection end portion 23 is pressed against the positioning reference inner surface 45 for positioning. As a result, the coil wire side connection end portion 23 is more reliably positioned relative to the positioning reference inner surface 45.

[0096] In addition, the gap G between the positioning reference inner surface 45 and the protrusion 47 can also be the same as the thickness T of the coil wire side connection end portion 23. In this case, if the coil wire side connection end portion 23 is inserted into the positioning hole 44, the protrusion 47 can press the coil wire side connection end portion 23 against the positioning reference inner surface 45 for positioning. Therefore, the coil wire side connection end portion 23 is positioned with reference to the positioning reference inner surface 45. In addition, since it is not necessary to flatten the protrusion 47, the insertion force when inserting the coil wire side connection end portion 23 into the positioning hole 44 can be reduced.

[0097] Furthermore, since the protrusion 47 is adjacent to the outlet opening of the positioning hole 44 in the pressing inner surface 46, the coil wire side connection end portion 23 can be pressed against the positioning reference inner surface 45 at the outlet of the positioning hole 44. This facilitates more accurate positioning of the coil wire side connection end portion 23 extending from the positioning hole 44.

[0098] Furthermore, the plurality of protrusions 47 are arranged at intervals in the width direction of the coil wire side connection end portion 23. Therefore, the coil wire side connection end portion 23 can be stably pressed against the positioning reference inner surface 45.

[0099] The retaining member 40 also includes a guide surface 48 that extends so as to gradually expand from the positioning hole 44 toward the armature 20. Therefore, the coil wire-side connecting end portion 23 is guided toward the positioning hole 44 by the guide surface 48. This allows the coil wire-side connecting end portion 23 to be easily inserted into the positioning hole 44.

[0100] Furthermore, the configurations described in the above-mentioned embodiment and the various modifications can be appropriately combined as long as they do not contradict each other. Description of Reference Numerals

[0101] 10 Rotating motor 12 Equipment housing 13 Shell body 14 cover 18 Field Magnets 20 Armature 22 Coil wire 23 Coil wire side connection end 23a Inclined part 23b Straight section 23bf1 long side 23bf2 short side 24 Armature core 28 External lead-out terminal 30 terminal modules 40 Retaining member 44 positioning holes 45 Positioning reference inner surface 46 Press the inner surface 46f Main inner surface 47 protuberance 47a Ride Shape Section 48 guide surface 50U, 50V, 50W, 60 busbars 50Ua, 60a busbar side connection end 50Uaf The surface of the busbar side connection end that is connected to the coil wire side connection end 50Uav bent part 50Ub external connection terminal 50Uc, 60c intermediate connection 60a Busbar side connection end G The gap between the inner surface of the positioning reference and the protrusion L Extension line of the inner surface of the positioning reference T Thickness of the connecting end of the coil wire X Rotation Axis

Claims

1. A terminal block, which is a terminal block in a rotating electrical machine having an armature, wherein: The terminal block includes a holding member disposed at an end portion of the armature. The holding member has a positioning hole into which a coil wire-side connecting end portion extending to an end portion of the armature can be inserted. The positioning hole has a positioning reference inner surface and a pressing inner surface opposite to the positioning reference inner surface. The pressing inner surface has a local protrusion.

2. The terminal module according to claim 1, wherein: The terminal block further includes a bus bar connected to the coil wire side connection end portion extending to the end portion of the armature. The bus bar has a bus bar side connection end portion joined to the coil wire side connection end portion, The holding member holds the bus bar in a state where the bus bar-side connecting end portion is exposed. The positioning hole is formed in a direction to guide the inserted coil wire-side connection end portion toward the bus bar-side connection end portion.

3. The terminal module according to claim 2, wherein: The holding member holds the bus bar so that the bus bar-side connecting end portion is located on the opposite side of the armature with respect to the positioning hole.

4. The terminal module according to claim 3, wherein: The holding member holds the bus bar so that a surface of the bus bar-side connection end portion connected to the coil wire-side connection end portion is arranged at a position spaced apart from the holding member.

5. The terminal module according to any one of claims 2 to 4, wherein: The holding member holds the bus bar so that a surface of the bus bar-side connection end portion connected to the coil wire-side connection end portion is arranged on an extension line of the positioning reference inner surface.

6. The terminal module according to any one of claims 1 to 4, wherein: The distance between the positioning reference inner surface and the protrusion is smaller than the thickness of the coil wire-side connecting end portion.

7. The terminal module according to any one of claims 1 to 4, wherein: The distance between the positioning reference inner surface and the protrusion is the same as the thickness of the coil wire-side connecting end portion.

8. The terminal module according to any one of claims 1 to 4, wherein: The protrusion is in abutment with an outlet opening of the positioning hole in the pressing inner surface.

9. The terminal module according to any one of claims 1 to 4, wherein: The pressing inner surface has a plurality of protrusions. The plurality of protrusions are arranged at intervals in the width direction of the coil wire-side connecting end portion.

10. The terminal module according to any one of claims 1 to 4, wherein: The holding member has a guide surface extending so as to sequentially expand from the positioning hole toward the armature.

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