Coil Wire Module

Abstract

To facilitate connection between coil wires.SOLUTION: A coil wire module 28 in a rotating electric machine includes a plurality of coil wires 16 provided in a core 14 in the rotating electrical machine, and a clip 30 having a pair of elastic pieces 32, each of the plurality of coil wires 16 has a connection end 17 exposed from the end of the core 14, the clip 30 is elastically deformable so as to change a width of the pair of elastic pieces 32, and keeps the at least two connection ends 17 in contact by elastic force of the clip 30 with the pair of elastic pieces 32 sandwiching at least two of the connection ends 17 of the plurality of coil wires 16.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a coil wire module. [Background technology]

[0002] Patent Document 1 discloses that the connection end of the rectangular conductor is inserted into a notch formed in the bus bar, and the bus bar and the rectangular conductor are then TIG (Tungsten Inert Gas) welded together, thereby connecting multiple rectangular conductors of the armature via the bus bar. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-148479 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the technique disclosed in Patent Document 1, the joint end of the rectangular conductor wire is inserted into the notch of the bus bar, and then the bus bar and the rectangular conductor wire are TIG welded together, making the connection work complicated.

[0005] Therefore, an object of the present disclosure is to make it easier to connect coil wires to each other. [Means for solving the problem]

[0006] The coil wire module of the present disclosure is a coil wire module for a rotating electric machine, comprising: a plurality of coil wires provided on a core of the rotating electric machine; and a clip having a pair of elastic pieces, each of the plurality of coil wires having a connection end exposed from an end of the core, the clip being elastically deformable to change the width of the pair of elastic pieces, and with the pair of elastic pieces clamping at least two of the connection ends of the plurality of coil wires, the elastic force of the clip keeps the at least two connection ends in contact. Effect of the Invention

[0007] According to the present disclosure, the coil wires can be easily connected to each other. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view showing the motor according to the first embodiment. [Diagram 2] FIG. 2 is a perspective view showing a connection portion between two connection ends. [Diagram 3] FIG. 3 is a plan view of the connection portion shown in FIG. 2 as seen along the rotation axis X. FIG. [Figure 4] FIG. 4 is a partial cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 11 is a plan view showing an example of an arrangement of clips according to a first modified example. [Figure 6] FIG. 11 is a plan view showing an example of an arrangement of clips according to a second modified example. [Figure 7] FIG. 11 is a perspective view showing a connection portion between connection ends according to the second embodiment. [Figure 8] 13A to 13C are explanatory diagrams showing a manufacturing example of a clip connected by a connecting portion. [Figure 9] FIG. 11 is a perspective view showing a connection portion between connection ends according to a third embodiment. [Figure 10] 10 is a cross-sectional view taken along line XX in FIG. 9. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described.

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

[0011] (1) A coil wire module for a rotating electric machine, comprising: a plurality of coil wires provided on a core in the rotating electric machine; and a clip having a pair of elastic pieces, each of the plurality of coil wires having a connection end exposed from an end of the core, the clip being elastically deformable to change the width of the pair of elastic pieces, and with the pair of elastic pieces clamping at least two of the connection ends of the plurality of coil wires, the elastic force of the clip keeps the at least two connection ends in contact.

[0012] According to this coil wire module, by clamping at least two connection ends with a pair of elastic pieces of the clip, the at least two connection ends can be kept in contact with each other, which makes it easy to connect the coil wires to each other.

[0013] (2) In the coil wire module of (1), the clips may include a first clip and a second clip located more inward than the first clip, and the first clip and the second clip may be located at different positions in the circumferential direction of the core. Since the first clip and the second clip are located at different positions in the radial and circumferential directions of the core, the first clip and the second clip can be arranged as closely as possible while avoiding interference between them.

[0014] (3) In the coil wire module of (2), the clips may include a third clip located more inward than the second clip, and the third clip may be located at the same position as the first clip but different from the second clip in the circumferential direction of the core. In this case, the first clip, the second clip, and the third clip can be arranged as closely as possible while avoiding interference between them.

[0015] (4) In the coil wire module of (1), the pair of elastic pieces may clamp a plurality of combinations of the at least two connection ends. In this manner, by clamping a plurality of combinations of at least two connection ends with a clip, the configuration is simplified compared to a case in which each combination is clamped with a separate clip.

[0016] (5) The coil wire module of (4) may further include an insulating member that insulates the combination of the at least two connection ends. This allows the combination of the at least two connection ends to be electrically connected separately while being insulated from each other.

[0017] (6) In the coil wire module of any one of (1) to (5), the connection end may extend in a direction intersecting with the rotation axis of the rotating electric machine, and the pair of elastic pieces may sandwich an end of a portion of the connection end that extends in a direction intersecting with the rotation axis of the rotating electric machine. In this case, by sandwiching an end of a portion of the connection end that extends in a direction intersecting with the rotation axis of the rotating electric machine between the pair of elastic pieces, it is not necessary to provide a portion of the connection end that is parallel to the rotation axis of the rotating electric machine. This makes it possible to reduce the protruding length of the end of the coil wire in the rotation axis direction, and to miniaturize the coil wire module.

[0018] (7) The coil wire module according to any one of (1) to (6) may further include a plurality of the clips, and a connecting portion that connects the plurality of clips so that the plurality of clips are arranged at intervals along the circumferential direction of the core. This makes it possible to easily connect the coil wires to each other at multiple points by each of the plurality of clips.

[0019] (8) In the coil wire module of (7), the connecting portion may be a portion bent from a straight shape. In this case, the multiple clips can be aligned in the circumferential direction of the core by bending the multiple clips at the connecting portion after pressing the multiple clips into a straight line shape. This makes it possible to easily process the multiple clips and increase yields.

[0020] [Details of the embodiment of the present disclosure] Specific examples of the coil wire module in 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 equivalent to the claims.

[0021] [Embodiment 1] Hereinafter, a coil wire module in a rotating electric machine according to the first embodiment will be described. A coil wire module in a rotating electric machine is a portion in which coil wires in the rotating electric machine are connected to each other. For convenience of explanation, the overall configuration of a motor 10, which is an example of a rotating electric machine, will be described. Fig. 1 is a schematic perspective view showing the motor 10.

[0022] The motor 10 includes a stator 12 and a rotor 20. The motor 10 is, for example, a three-phase motor. In this embodiment, the rotor 20 rotates around a rotation axis X within the stator 12. The rotating electric machine may be a generator instead of an electric motor such as the motor 10.

[0023] The stator 12 is an armature and includes a stator core 14 and a plurality of coil wires 16. The stator core 14 includes a plurality of teeth. The plurality of teeth are provided so as to surround the rotation axis X. Around the rotation axis X, gaps are provided between the plurality of teeth.

[0024] A plurality of coil wires 16 are provided on the stator core 14. The coil wire 16 includes straight portions 16B arranged between the teeth so as to extend in a direction parallel to the rotation axis X, and connection ends 17 exposed from the ends of the stator core 14. At least two connection ends 17 are connected to each other on the axial outside of the stator core 14 so as to form a coil with one or more teeth as a core. FIG. 1 illustrates a state in which two connection ends 17 are connected in a plurality of sets above the stator core 14. At least two connection ends may also be connected to each other below the stator core 14 in FIG. 1. At least two coil wires 16 do not need to be connected in the same configuration on both ends outside the stator core 14. For example, below the stator core 14, two coil wires may be formed integrally and directly connected to each other. Also, below the stator core 14, two coil wires may be connected via a bus bar or the like formed of a metal plate material or the like.

[0025] A plurality of coil wires 16 are connected in a predetermined combination at one end and the other end of the stator core 14 to form a coil that generates a magnetic field for rotating the rotor 20. The coil wires 16 provided on the stator 12 may be wound in a distributed winding form or a concentrated winding form.

[0026] The rotor 20 includes a permanent magnet, and is rotatably disposed within the stator 12. The rotor 20 rotates about a rotation axis X due to a magnetic field generated by the stator 12.

[0027] A main body case 22 is provided so as to surround the periphery and the other end side of the stator 12. In addition, a cover 26 is provided so as to cover one end side of the stator 12.

[0028] Some ends of the coil wires 16 are drawn out from one end of the stator 12 and used as ends to be connected to an external power source, while the other ends of the coil wires 16 are drawn out from one end of the stator 12 and used as ends to be connected at a neutral point.

[0029] A coil wire module 28 in a rotating electric machine will be described in more detail, focusing on the configuration for connecting two connection ends 17. Fig. 2 is a perspective view showing the connection portion between two connection ends 17. Six pairs of connection portions are excerpted and depicted in Fig. 2. Fig. 3 is a plan view of the connection portion shown in Fig. 2, viewed along the rotation axis X. Fig. 4 is a partial cross-sectional view taken along line IV-IV in Fig. 3.

[0030] The coil wire module 28 in the rotating electric machine includes the plurality of coil wires 16 and a clip 30.

[0031] The coil wire 16 is formed, for example, of a rectangular conductor whose cross section (a cross section in a plane perpendicular to the extending direction) is a rectangle that is long in one direction. The corners may be rounded. The coil wire 16 is formed of a metal such as copper or a copper alloy. The coil wire 16 includes a straight portion 16B and a connection end portion 17. The straight portion 16B is disposed in a groove between the teeth of the stator core 14. The straight portion 16B is formed in a straight line extending along the direction of the rotation axis X.

[0032] The connection end 17 is exposed from an end of the stator core 14 and extends toward the other connection end 17 to which it is to be connected. In this embodiment, coil wires 16 at different positions along the circumferential direction of a circle centered on the rotation axis X are connected to each other. For this reason, the connection end 17 of one of the two coil wires 16 to be connected to each other includes an inclined portion 17a that extends from the end of the stator core 14 toward the other coil wire 16 to which it is to be connected along the circumferential direction. The inclined portion 17a extends in a direction intersecting with the rotation axis X. The tip of the inclined portion 17a is inclined to the rotation axis X. direction A straight end 17b is provided that extends in the opposite direction from the stator core 14 along the circumferential direction of the coil wire 16. The connection end 17 of the other of the two coil wires 16 that are connected to each other includes an inclined portion 17a that, as it extends from the end of the stator core 14, extends in the circumferential direction toward the one coil wire 16 to which it is to be connected. directionA straight end 17b is provided that extends toward the opposite side to the stator core 14 along the inclined portion 17a. Of the two coil wires 16 that are connected to each other, the tip end of the inclined portion 17a and the straight end 17b are disposed at a middle (here, the center) position of the two coil wires 16 in the circumferential direction. The tip end of the inclined portion 17a and the straight end 17b of the two coil wires 16 can overlap in the radial direction of a circle centered on the rotation axis X. Note that the longitudinal direction in the cross section of the coil wire 16 may be along a tangential direction to the circumferential direction. In this case, the tip end of the inclined portion 17a and the straight end 17b can contact each other over a large area.

[0033] An insulating coating such as enamel may be formed on the outer periphery of the straight portion 16B. The conductor is exposed at the portion of the connection end 17 that contacts the mating connection end 17. Fig. 4 shows that the conductor is exposed at the surfaces of the connection ends 17 that contact each other, and an insulating coating 17S is formed on the other surfaces.

[0034] For example, an insulating coating made of enamel or the like may be formed over the entire coil wire 16, and the insulating coating may be removed only from the surface of the connection end 17 that comes into contact with the counterpart connection end 17. After the insulating coating is removed from the entire periphery of the connection end 17, an insulating coating may be formed by powder coating or the like on the surfaces other than the surface that comes into contact with the counterpart connection end 17. However, the insulating coating may also be removed from the entire outer periphery of the connection end 17, exposing the conductor.

[0035] The clip 30 is formed of a material having elasticity, such as spring steel or resin. The clip 30 includes a base 31 and a pair of elastic pieces 32. The base 31 is formed in a plate shape. The pair of elastic pieces 32 are formed in a plate shape extending from both side edges of the base 31 toward one main surface side of the base 31. The pair of elastic pieces 32 include portions that approach each other as they move away from the base 31. The tip portions of the pair of elastic pieces 32 include tip guide portions 33 that move away from each other as they move away from the base 31. In the initial shape, the gap between the narrowest portions of the pair of elastic pieces 32 is set to be smaller than the thickness dimension of the overlapped two connecting ends 17. The gap between the most distal ends of the tip guide portions 33 may be set to be larger than the thickness dimension of the overlapped two connecting ends 17. The clip 30 is configured to be elastically deformable so as to change the width of the pair of elastic pieces 32. When the width of the pair of elastic pieces 32 is increased from the width in the initial shape, the elastic force of the clip 30 itself, particularly the base 31, Ra bullet The pair of elastic pieces 32 are urged in the direction toward each other by the elastic force exerted by the portion leading to the pair of elastic pieces 32 .

[0036] Then, with the two straight end portions 17b overlapped, the pair of elastic pieces 32 are spread apart, and the two straight end portions 17b are sandwiched between the pair of elastic pieces 32. The pair of elastic pieces 32 may be spread apart by pressing the clip 30 toward the overlapped straight end portions 17b while pressing the inner surfaces of the pair of tip guide portions 33 against the outer surfaces of the overlapped straight end portions 17b. Then, with the pair of elastic pieces 32 disposed on the outer surfaces of the overlapped straight end portions 17b, the pair of elastic pieces 32 are biased in the approaching direction by the elastic force of the clip 30 trying to return to its original shape. As a result, the pair of elastic pieces 32 push the two straight end portions 17b in the approaching direction, and the two connection ends 17 are kept in contact with each other.

[0037] In this embodiment, since the clip 30 is pressed along the direction of the rotation axis X, the base 31 is disposed on the tip surface of the straight end portion 17b. The base 31 may also be disposed on the side of the straight end portion 17b.

[0038] The connection of the two connection ends 17 by the clips 30 may be performed at multiple locations in the circumferential direction of the stator core 14. In this case, the multiple clips 30 are arranged at intervals in the circumferential direction of the stator core 14. The connection of the two connection ends 17 by the clips 30 may be performed at different positions in the radial direction of the stator core 14. In this case, the multiple clips 30 are arranged along multiple circumferential paths with different diameters.

[0039] In such a case, the circumferential positions of the clips 30 may be appropriately shifted between the circumferential paths so that the clips do not interfere with each other. This makes it easier to arrange the clips 30 closely together while avoiding interference between the clips 30.

[0040] That is, the clips 30 are divided into a first clip 30a, a second clip 30b, and a third clip 30c. Hereinafter, the clips 30 may be divided into a first clip 30a, a second clip 30b, and a third clip 30c, as necessary. The second clip 30b is disposed on the inner periphery side of the first clip 30a. The third clip 30c is disposed on the inner periphery side of the second clip 30b.

[0041] More specifically, the first clips 30a are spaced apart along a circumferential path centered on the rotation axis X. The first clips 30a connect the coil wires 16 that are closer to the outer periphery. The second clips 30b are spaced apart along a circumferential path centered on the rotation axis X. The diameter of the circumferential path along which the second clips 30b are arranged is smaller than the diameter of the circumferential path along which the first clips 30a are arranged. The second clips 30b connect the coil wires 16 that are closer to the center in the inner-outer direction. The third clips 30c are spaced apart along a circumferential path centered on the rotation axis X. The diameter of the circumferential path along which the third clips 30c are arranged is smaller than the diameter of the circumferential path along which the second clips 30b are arranged. The third clips 30c connect the coil wires 16 that are closer to the inner periphery.

[0042] The first clip 30a and the second clip 30b are located at different positions in the circumferential direction of the stator core 14. Therefore, even if the two connection ends 17 at which the first clip 30a maintains a connected state and the two connection ends 17 at which the second clip 30b maintains a connected state protrude in a radial direction according to the elastic pieces 32, they can be closely arranged in the radial direction while avoiding contact between the elastic pieces 32.

[0043] Similarly, the second clip 30b and the third clip 30c are located at different positions in the circumferential direction of the stator core 14. Therefore, the two connection ends 17 that the second clip 30b maintains in a connected state and the two connection ends 17 that the third clip 30c maintains in a connected state can also be closely arranged in the radial direction.

[0044] Furthermore, in the circumferential direction of the stator core 14, the third clip 30c is located at the same position as the first clip 30a but at a different position from the second clip 30b. Therefore, it is not necessary to have a positional relationship in which the first clip 30a, the second clip 30b, and the third clip 30c are all shifted in the circumferential direction in the circumferential direction of the stator core 14. Therefore, the first clip 30a, the second clip 30b, and the third clip 30c can be closely arranged in the circumferential direction as well.

[0045] It is not necessary that each connection end 17 is kept in a connected state at a position along three circumferential paths as in the example using the first clip 30a, the second clip 30b, and the third clip 30c. For example, as shown in the first modified example in FIG. 5, the third clip 30c may be omitted.

[0046] 6, the clip 30 may include a plurality of fourth clips 30d. The plurality of fourth clips 30d are provided at intervals along a circumferential path centered on the rotation axis X. The diameter of the circumferential path along which the plurality of fourth clips 30d are arranged is smaller than the diameter of the circumferential path along which the plurality of third clips 30c are arranged. The fourth clips 30d connect the coil wires 16 that are located further inwardly.

[0047] In the circumferential direction of the stator core 14, the fourth clip 30d is located at a position that is the same as the second clip 30b but different from the third clip 30c. Therefore, in the circumferential direction of the stator core 14, the first clip 30a and the third clip 30c are arranged at the same position, and the second clip 30b and the fourth clip 30d are arranged at the same position, shifted from the first clip 30a and the third clip 30c. Therefore, similar to the above, the first clip 30a, the second clip 30b, the third clip 30c, and the fourth clip 30d can be easily arranged closely in the radial and circumferential directions.

[0048] According to the coil wire module 28 configured in this manner, by clamping at least two connection ends 17 with the pair of elastic pieces 32 of the clip 30, it is possible to keep at least two connection ends 17 in contact with each other. This makes it easy to connect the coil wires 16 to each other.

[0049] In addition, since the clip 30 is configured to clamp at least two connection ends 17, even if the positions of the at least two connection ends 17 are misaligned, the above-mentioned connection state can be established by forcibly butting them together by the clamping force of the clip 30. This makes it possible to absorb the tolerance of the connection positions by the clamping force of the clip.

[0050] Moreover, the clips 30 include first clips 30a and second clips 30b that are arranged at different positions on the inner and outer periphery, and are arranged at different positions in the circumferential direction of the stator core 14. Therefore, the first clips 30a and the second clips 30b can be arranged as closely as possible while avoiding interference between the first clips 30a and the second clips 30b.

[0051] When the clip 30 includes a third clip 30c located further inward than the second clip 30b, if the third clip 30c is located at the same position as the first clip 30a but at a different position from the second clip 30b in the circumferential direction of the stator core 14, then the clips 30a, 30b, and 30c can be arranged as closely as possible while avoiding interference between the first clip 30a, the second clip 30b, and the third clip 30c.

[0052] [Embodiment 2] A coil wire module 128 according to embodiment 2 will be described. Fig. 7 is a perspective view showing a connection portion between two connection end portions 117. Fig. 7 shows an excerpt of a portion of the connection portion. In the description of embodiment 2, the same components as those described in embodiment 1 are given the same reference numerals and their description will be omitted, and the description will focus on the differences from embodiment 1.

[0053] The connection end 117 is a portion that corresponds to the connection end 17 located at the end of the coil wire 16. The connection end 117 has the inclined portion 17a in the first embodiment, but does not have the straight end 17b.

[0054] Therefore, the pair of elastic pieces 32 of the clip 30 sandwich the end of the inclined portion 17a of the connection end 117, which extends in a direction intersecting with the rotation axis X.

[0055] A plurality of clips 30 arranged at intervals along the circumferential direction of stator core 14 are connected by connecting portions 138 so as to be arranged in an annular shape.

[0056] More specifically, the multiple first clips 30a are arranged at intervals along the circumferential direction of the stator core 14. The multiple first clips 30a are connected by connecting portions 138. The multiple first clips 30a may be connected in any configuration. For example, the multiple first clips 30a and the connecting portions 138 may be manufactured as an integrally connected part by pressing a single metal plate.

[0057] In this case, as shown in Fig. 8, after processing a single metal plate into a shape in which a plurality of first clips 30a are connected in a straight line, the connecting portion 138 between the plurality of first clips 30a may be bent into a shape in which a plurality of first clips 30a are connected in a ring shape, as shown by arrow A. In this case, the connecting portion 138 is initially pressed into a straight line, but is then processed into a curved state. For this reason, it is considered that traces of the bending process, such as wrinkles, internal distortion, etc., remain on the connecting portion 138.

[0058] It is not essential that the connecting portion 138 is manufactured as described above. For example, the first clips 30a may be pressed from a single metal plate so as to be arranged at intervals along the circumferential direction of the stator core 14. The connecting portion 138 may be molded from resin using the bases 31 of the clips 30 as insert parts. The clips 30 and the connecting portion 138 may be molded as resin parts.

[0059] Similarly, the multiple second clips 30b are connected by connecting portions 138 so as to be spaced apart along the circumferential direction of the stator core 14. Similarly, the multiple third clips 30c are connected by connecting portions 138 so as to be spaced apart along the circumferential direction of the stator core 14.

[0060] In the second embodiment, an example is shown in which the first clips 30a, the second clips 30b, and the third clips 30c are located at the same position in the circumferential direction of the stator core 14. As in the first embodiment, the second clips 30b may be arranged at different positions in the circumferential direction with respect to the first clips 30a and the third clips 30c.

[0061] In the coil wire module 128 according to the second embodiment, the multiple clips 30a are connected by the connecting portions 138 so as to be arranged at intervals along the circumferential direction of the stator core 14. The multiple clips 30a connected by the connecting portions 138 can be easily fitted together onto multiple combinations of the multiple connection ends 117 arranged at intervals in the circumferential direction of the stator core 14. This makes it easy to connect the coil wires 16 together at multiple locations using the multiple clips 30a.

[0062] Furthermore, the pair of elastic pieces 32 connect at least two connection ends 117 by sandwiching at least two inclined portions 17a extending in a direction intersecting the rotation axis X. This eliminates the need to provide a portion parallel to the rotation axis X at the connection ends 117. This allows the protruding length of the coil wire 16 of the stator core 14 in the direction of the rotation axis X to be shortened, thereby enabling the coil wire module 128 to be made smaller, and further the motor 10 to be made smaller.

[0063] Furthermore, if the connecting portion 138 is a portion bent from a straight line, the clips 30 can be arranged in the circumferential direction of the core by pressing the clips 30 into a shape in which they are connected in a straight line, and then bending the clips 30 at the connecting portion 138. This makes it easier to process each clip and increases the yield, compared to when the clips are pressed into a ring shape.

[0064] [Embodiment 3] A coil wire module 228 according to a third embodiment will be described. Fig. 9 is a perspective view showing a connection portion between connection end portions 117. Fig. 9 shows an excerpt of a portion of the connection portion. Fig. 10 is a cross-sectional view taken along line XX in Fig. 9. In the description of the third embodiment, the same components as those described in the first or second embodiment are given the same reference numerals and their description will be omitted, and the description will focus on the differences from the second embodiment.

[0065] The connection ends 117 are the same as the connection ends 117 described in embodiment 2. Of the multiple connection ends 117, a combination of two connection ends 117 connected near the outer periphery of stator core 14, a combination of two connection ends 117 connected near the center in the inward / outward direction of stator core 14, and a combination of two connection ends 117 connected near the inner periphery of stator core 14 are arranged at the same position in the circumferential direction of stator core 14.

[0066] Clip 230 corresponding to clip 30 includes a pair of elastic pieces 232. The dimension between the pair of elastic pieces 232 is larger than the dimension between the pair of elastic pieces 32. Here, base 231 is set to a width dimension according to the thickness of connecting end portions 117 of the multiple combinations. The dimension between the pair of elastic pieces 232 is set to an initial dimension smaller than the thickness of connecting end portions 117 of the multiple combinations, and is set to a size that can expand larger than the thickness due to elastic deformation including base 231.

[0067] Then, in a state where multiple (here, three) combinations of two connection ends 117 are overlapped in the radial direction of stator core 14, a pair of elastic pieces 232 sandwiches the overlapping body from the inner and outer periphery sides. Then, the pair of elastic pieces 232 are urged in the approaching direction by an elastic force that causes the portion from the pair of elastic pieces 232 to the base part 231 to return to its original shape. As a result, in each of the multiple (here, three) combinations of two connection ends 117, the two connection ends 117 are urged in the approaching direction and are maintained in contact with each other.

[0068] In addition, the conductor is exposed and electrical continuity is obtained between the connection ends 117 where electrical connection is required. Between the connection ends 117 where insulation is required, that is, between the above-mentioned combinations, insulation is provided by an insulating coating 17S as an insulating member. The insulating member may be an insulating coating 17S formed on a part of the outer periphery of the connection end 117, or may be a separate insulating member such as an insulating plate or insulating film sandwiched between the connection ends 117.

[0069] In the third embodiment, a plurality of clips 230 are arranged to be spaced apart from one another in the circumferential direction of the stator core 14. The clips 230 are connected to one another by connecting portions 238, similar to the second embodiment. The connecting portions 238 may be omitted.

[0070] According to the coil wire module 228 of embodiment 3, multiple combinations of at least two connection ends 117 are clamped by clips 230, so that the number of clips 230 and the number of clamping operations using clips 230 can be reduced, thereby simplifying the configuration and ease of assembly.

[0071] Furthermore, since at least two combinations of connection ends 117 are insulated from each other by an insulating member such as insulating coating 17S, combinations of connection ends 117 that require insulation can be electrically connected separately.

[0072] [Variations ]

[0073] For example, as described in the first embodiment, the clip 30 that is not connected by a connecting portion may clamp the end of the inclined portion 17a of the second embodiment. Moreover, the clips 30a, 30b, and 30c in the first embodiment may be disposed at the same position in the radial direction of the stator core 14.

[0074] In the above example, the clip clamps two connection ends in an electrically connected state. The clip may clamp three connection ends in an electrically connected state. In this case, it is sufficient that both sides of the central connection end are exposed, and that the conductors on the surfaces of the two outer connection ends facing the central connection end are exposed.

[0075] The configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]

[0076] 10 Motor (rotating electric machine) 12 Stator 14 Stator core (core) 16 Coil wire 16B Straight section 17, 117 Connection end 17S Insulating coating (insulating material) 17a Slope 17b Straight end 20 Rotors 22 Main unit case 26 Cover 28, 128, 228 coil wire modules 30, 230 Clip (30a 1st clip, 30b 2nd clip, 30c 3rd clip, 30d 4th clip) 31, 231 base 32, 232 Elastic piece 33 Tip guide part 138, 238 connection part X Rotation Axis

Claims

1. A coil wire module for a rotating electric machine, A plurality of coil wires provided in a core of the rotating electric machine; A clip having a pair of elastic pieces; Equipped with Each of the coil wires has a connection end exposed from an end of the core, The clip is elastically deformable so as to change a width of the pair of elastic pieces, With at least two of the connection ends of the plurality of coil wires sandwiched between the pair of elastic pieces, the at least two connection ends are kept in contact with each other by the elastic force of the clip; A plurality of the clips are provided, A coil wire module comprising a connecting portion that connects a plurality of the clips so that the clips are arranged at intervals along a circumferential direction of the core.

2. 2. The coil wire module according to claim 1, The clip includes a first clip and a second clip located radially inward of the first clip, A coil wire module, wherein the first clip and the second clip are positioned at different positions in a circumferential direction of the core.

3. 3. The coil wire module according to claim 2, The clips include a third clip located radially inward relative to the second clip, a coil wire module, the third clip being located at the same position as the first clip but different from the second clip in a circumferential direction of the core;

4. 2. The coil wire module according to claim 1, A coil wire module, wherein the pair of elastic pieces sandwich a plurality of combinations of the at least two connection ends.

5. 5. The coil wire module according to claim 4, The coil wire module further includes an insulating member for insulating between the combination of the at least two connection ends.

6. The coil wire module according to any one of claims 1 to 5, the connection end portion extends in a direction intersecting a rotation axis of the rotating electric machine, The pair of elastic pieces sandwich an end of a portion of the connection end that extends in a direction intersecting with a rotation axis of the rotating electric machine.

7. A coil wire module according to any one of claims 1 to 6, A coil wire module, wherein the connecting portion is a portion bent from a straight shape.

Images