JP2019062630A - motor - Google Patents

Abstract

To provide a motor including a bus bar capable of improving the yield.SOLUTION: A motor includes a rotor having a shaft arranged along a medial axis, a stator having multiple coils and surrounding the rotor on the radial outside of the rotor, and a bus bar 70 placed on one side of the stator in the axial direction, and electrically connected with a conductor elongating from the coil. The bus bar 70 has a tabular bus bar body 71, which is arcuate in the hoop direction and having a plate surface crossing the axial direction. Central angle of the bus bar body 71 is 120° or less. The bus bar body 71 has a coil connection recess 73 placed at the radial inner edge of the bus bar body 71. The coil connection recess 73 is recessed to the radial outside. The conductor is inserted into the coil connection recess 73, and connected with the bus bar 70.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a motor.

  There is known a rotating electrical machine provided with a bus bar connected to a coil. For example, in the rotating electrical machine described in Patent Document 1, the bus bar includes a curved bus bar main body and a connection terminal extending inward from the inner periphery of the bus bar main body.

JP, 2017-22820, A

  The bus bar as described above is manufactured, for example, by punching a plate member. In this case, for example, depending on the shape of the bus bar, such as having the connection terminals as described above, the number of bus bars to be punched out from one plate member tends to be small, and the yield of the bus bar may not be sufficiently improved.

  An object of the present invention is to provide a motor provided with a bus bar capable of improving the yield in view of the above-mentioned circumstances.

  One aspect of the motor according to the present invention includes a rotor having a shaft disposed along a central axis, a plurality of coils, and a stator surrounding the rotor radially outward of the rotor, and an axial direction of the stator A bus bar is disposed on one side and electrically connected to a conductive wire extending from the coil, and the bus bar has a plate shape whose plate surface intersects with the axial direction and has an arc-shaped bus bar main body along the circumferential direction The central angle of the bus bar main body is 120 ° or less, and the bus bar main body has a coil connection recess disposed at the radial inner edge portion of the bus bar main body, and the coil connection recess is provided radially outward A motor is provided, wherein the lead wire is inserted into the coil connection recess and connected to the bus bar.

  According to one aspect of the present invention, a motor is provided that includes a bus bar that can improve yield.

FIG. 1 is a cross-sectional view showing the motor of the first embodiment. FIG. 2 is a perspective view showing the bus bar unit of the first embodiment. FIG. 3 is a top view of a part of the motor of the first embodiment. FIG. 4 is a view showing a part of the motor of the first embodiment, and is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a view of the bus bar of the second embodiment viewed from the upper side. FIG. 6 is a view showing a part of the procedure of manufacturing the bus bar of the second embodiment.

  The Z-axis direction appropriately shown in each drawing is a vertical direction with the positive side as the upper side and the negative side as the lower side. A central axis J appropriately shown in each drawing is an imaginary line which is parallel to the Z-axis direction and extends in the vertical direction. In the following description, the axial direction of the central axis J, that is, the direction parallel to the vertical direction is simply referred to as “axial direction”, and the radial direction centering on the central axis J is simply referred to as “radial direction”. The circumferential direction centered on is simply referred to as "circumferential direction".

  Moreover, the positive side in the Z-axis direction in the axial direction is called "upper side", and the negative side in the Z-axis direction in the axial direction is called "lower side". In the present embodiment, the upper side corresponds to one side in the axial direction. Note that the vertical direction, the upper side and the lower side are simply names for describing the relative positional relationship of each part, and the actual arrangement relationship etc. is an arrangement relationship etc. other than the arrangement relationship etc. indicated by these names. May be

First Embodiment
As shown in FIG. 1, the motor 10 according to this embodiment includes a housing 11, a rotor 20, bearings 51 and 52, a stator 30, a bearing holder 40, and a bus bar unit 90. As shown in FIGS. 1 to 3, the bus bar unit 90 has a bus bar holder 60 and a bus bar 70. That is, motor 10 includes bus bar holder 60 and bus bar 70.

  As shown in FIG. 1, the housing 11 accommodates each part of the motor 10. The housing 11 is cylindrical around the central axis J. The housing 11 holds the bearing 51 at the bottom on the lower side. The rotor 20 has a shaft 21, a rotor core 22, and a magnet 23. The shaft 21 is disposed along the central axis J. The shaft 21 is rotatably supported by bearings 51 and 52. The rotor core 22 has an annular shape fixed to the outer peripheral surface of the shaft 21. The magnet 23 is fixed to the outer peripheral surface of the rotor core 22.

  The bearing 51 rotatably supports the shaft 21 on the lower side of the rotor core 22. The bearing 52 rotatably supports the shaft 21 on the upper side of the rotor core 22. The bearings 51 and 52 are ball bearings.

  The stator 30 faces the rotor 20 in the radial direction via a gap. The stator 30 surrounds the rotor 20 at the radially outer side of the rotor 20. The stator 30 has a stator core 31, an insulator 34, and a plurality of coils 35. The stator core 31 has a core back 32 and a plurality of teeth 33. Although not shown, the core back 32 extends in the circumferential direction. The core back 32 has an annular shape centered on the central axis J. The teeth 33 extend radially inward from the core back 32. The plurality of teeth 33 are arranged at equal intervals along the circumferential direction.

  The insulator 34 is mounted on the stator core 31. The insulator 34 is provided for each of the plurality of teeth 33. The insulator 34 is made of resin. As shown to FIG. 1 and FIG. 4, the insulator 34 has the insulator main body 34a and the convex part 34e. As shown in FIG. 1, the insulator main body 34 a includes a cylindrical portion 34 b, an outer protrusion 34 c, and an inner protrusion 34 d. The cylindrical portion 34 b is in the form of a rectangular cylinder open on both sides in the radial direction. The teeth 33 are passed through the cylindrical portion 34b. The outer protrusion 34 c protrudes upward from the radial outer end of the cylindrical portion 34 b. The inner protrusion 34 d protrudes upward from the radially inner end of the cylindrical portion 34 b.

  As shown in FIG. 4, the convex part 34e protrudes upward from the insulator main body 34a. More specifically, the protrusion 34 e protrudes upward from the outer protrusion 34 c. The convex part 34e is cylindrical. The upper end of the convex portion 34e is a welded portion 34f having a large outer diameter. The welded portion 34f is substantially hemispherical and convex upward. Weld portion 34 f contacts the upper surface of bus bar 70. The welded portion 34 f is produced, for example, by melting the upper end of the convex portion 34 e by heat. As shown in FIG. 2, a plurality of convex portions 34 e are provided along the circumferential direction. In FIG. 2, for example, two convex portions 34 e are provided.

  As shown in FIG. 1, the plurality of coils 35 are respectively attached to the plurality of teeth 33 via the insulators 34. The coil 35 is configured by winding a conducting wire around the teeth 33 via the cylindrical portion 34 b. The plurality of coils 35 are arranged along the circumferential direction. From each coil 35, a coil leader 35a is drawn upward. The coil lead-out wire 35 a is a conducting wire extending from the coil 35 and is an end of the conducting wire that constitutes the coil 35. The bearing holder 40 is disposed on the upper side of the stator 30. The bearing holder 40 is annular. The bearing holder 40 holds the bearing 52.

  The bus bar holder 60 is disposed axially between the stator 30 and the bearing holder 40. The bus bar holder 60 is supported by the stator 30 from the lower side. More specifically, as shown in FIG. 4, the bus bar holder 60 is fixed to the upper end of the outer protrusion 34 c. As shown in FIG. 2, the bus bar holder 60 is a plate-like member extending in an arc shape along the circumferential direction. The radially inner edge portion of the bus bar holder 60 and the radially outer edge portion of the bus bar holder 60 extend in an arc shape. The bus bar holder 60 is made of resin.

  The bus bar holder 60 has a fitting recess 61 on the upper surface of the bus bar holder 60. The fitting recess 61 is recessed downward. The fitting recess 61 extends in the circumferential direction. The fitting recess 61 opens radially inward. As shown in FIG. 4, the bus bar holder 60 has a holder penetrating portion 62 that penetrates the bus bar holder 60 in the axial direction. The upper end of the holder penetrating portion 62 opens at the bottom of the fitting recess 61. The convex portion 34 e is passed through the holder penetrating portion 62. Although illustration is abbreviate | omitted, the holder penetration part 62 is provided with two or more along the circumferential direction. In the present embodiment, for example, two holder penetration parts 62 are provided. Each of the two convex portions 34 e is passed through the two holder penetrating portions 62.

  The bus bar 70 is disposed on the upper side of the bus bar holder 60 and supported by the bus bar holder 60 from the lower side. Thus, the bus bar 70 is disposed on the upper side of the stator 30. More specifically, the bus bar 70 is disposed on the upper side of the insulator 34. As shown in FIG. 2, the bus bar 70 has a bus bar main body 71 and a wall portion 72.

  The bus bar main body 71 has a plate shape whose plate surface intersects with the axial direction. In the present embodiment, the plate surface of the bus bar main body 71 is orthogonal to the axial direction. The bus bar main body 71 is arc-shaped along the circumferential direction. In the present specification, “a member is arc-shaped along the circumferential direction” means that a member may extend in a curved shape along the circumferential direction as a whole, or may be a strict arc shape, or The part may be distorted in a substantially arc shape, or may be in an elliptical arc shape.

  As shown in FIG. 3, in the present embodiment, the bus bar main body 71 has an arc shape along the circumferential direction as a whole. The radial outer edge portion of the bus bar main body 71 extends in an arc shape. The radially inner edge portion of the bus bar main body 71 extends in an arc shape except for a coil connection recess 73 described later. That is, of the radially inner edge portion of the bus bar main body 71, the entire portion other than the coil connection concave portion 73 is an arc portion 71b extending in an arc shape. The arc portion 71 b is a portion of the bus bar 70 located on the innermost side in the radial direction.

  The central angle θ of the bus bar main body 71 is 120 ° or less. With the central angle θ, a line connecting a portion of the bus bar main body 71 located on the most circumferential side with the central axis J when viewed along the axial direction, and the other side of the bus bar main body 71 in the circumferential direction It is an angle between the located portion and a line connecting the central axis J. The central angle θ is, for example, 80 °.

  As shown in FIG. 2, the bus bar main body 71 is fitted in the fitting recess 61. The upper surface of the bus bar main body 71 is disposed at the same position in the axial direction as the upper surface of the bus bar holder 60. The radially inner portion of the bus bar main body 71 protrudes radially inward of the bus bar holder 60.

  The bus bar main body 71 has a coil connection recess 73. The coil connection recess 73 is disposed at the radially inner edge of the bus bar main body 71. The coil connection recess 73 is recessed radially outward and penetrates the bus bar main body in the axial direction. As shown in FIG. 3, the inside of the coil connection recess 73 is substantially rectangular when viewed from the upper side. The coil lead wire 35 a is passed through the coil connection recess 73. Coil lead-out wire 35 a is inserted into coil connection recess 73 and connected to bus bar 70. Thus, the bus bar 70 is electrically connected to the coil lead wire 35a.

  The coil leader 35 a contacts the inner side surface of the coil connection recess 73. In the present embodiment, the coil lead wire 35 a contacts the radially outer side surface of the inner side surface of the coil connection recess 73. The coil lead wire 35 a is sandwiched in contact with both circumferential side surfaces of the inner surface of the coil connection recess 73. The coil leader 35 a may not be in contact with the inner side surface of the coil connection recess 73.

  Here, for example, when the U-shaped grip portion is provided at the tip end portion of the arm portion extending from the bus bar main body, and the coil lead wire is gripped by the grip portion to connect the bus bar and the coil lead wire, the arm portion and The shape of the bus bar is complicated by the provision of the grips, and the number of bus bars that punch through from one plate member is reduced. As a result, the yield of the bus bar may not be sufficiently improved.

  On the other hand, according to the present embodiment, the coil connection concave portion 73 recessed outward in the radial direction is provided at the radial inner edge portion of the bus bar main body 71. Therefore, the shape of the bus bar 70 can be simplified more easily than in the case where the arm and the grip are provided. More specifically, it is easy to make the shape of the bus bar 70 close to a simple arc shape. Thereby, it is easy to increase the number of bus bars 70 to be punched out of one plate member. Further, the bus bar main body 71 is arc-shaped with a central angle θ of 120 ° or less. Therefore, as compared with the case where the central angle θ is larger than 120 °, the shape of the bus bar main body 71 can be easily brought into a relatively linear shape. Thereby, in one plate member, it is easy to punch out the bus bar 70 sequentially from the place adjacent to the place where the one bus bar 70 is punched out. Therefore, the number of bus bars 70 can be easily increased. As described above, according to the present embodiment, the motor 10 including the bus bar 70 capable of improving the yield can be obtained.

  In the present embodiment, the entire portion of the radially inner edge portion of the bus bar main body 71 other than the coil connection recess 73 is an arc portion 71b extending in an arc shape, and the coil connection recess 73 extends radially outward from the arc portion 71b. Get depressed. Thus, the radially inner edge portion of the bus bar main body 71 of the present embodiment is not provided with a portion projecting radially inward. Therefore, the shape of the bus bar 70 can be simplified more easily, and the number of the bus bars 70 taken from one plate member can be increased more easily. Therefore, the yield of bus bar 70 can be further improved.

  A plurality of coil connection recesses 73 are provided along the circumferential direction. In FIG. 3, for example, three coil connection recesses 73 are provided. The plurality of coil connection recesses 73 are arranged at equal intervals along the circumferential direction. The coil leader 35a inserted into each of the plurality of coil connection recesses 73 extends from each of the coils 35 adjacent in the circumferential direction. As a result, when the coil leader 35a is drawn upward from each coil 35 and inserted into each coil connection recess 73, the size of the bus bar main body 71 in the circumferential direction can be easily reduced. In the present embodiment, three coil lead wires 35 a extending from three coils 35 adjacent in the circumferential direction are inserted into the respective coil connection recesses 73 and connected to the bus bars 70.

  As shown in FIG. 2, the wall portion 72 protrudes upward from the bus bar main body 71. The wall portion 72 protrudes in the axial direction from an inner edge portion on one circumferential side of the coil connection concave portion 73 in the bus bar main body 71. The wall portion 72 is a rectangular plate whose plate surface is orthogonal to the circumferential direction. The coil lead-out wire 35 a passed through the coil connection recess 73 is fixed to the wall portion 72.

  The wall 72 and the coil leader 35a are fixed, for example, by welding. Examples of the welding method include arc welding such as TIG welding. The operator welds the wall 72 and the coil lead wire 35 a by causing an arc discharge between the electrode of the welding torch and the wall 72. Since the wall portion 72 extends in the axial direction, arc discharge is more likely to occur between the wall portion 72 and the electrode of the welding torch than the bus bar main body 71. Thus, by setting the wall portion 72 to a portion to be welded to the coil lead-out wire 35a, connection between the coil lead-out wire 35a and the bus bar 70 can be facilitated. In the present embodiment, the wall portion 72 protrudes upward from the bus bar main body 71, so it is easy to weld the wall portion 72 and the coil lead-out wire 35a.

  The axial dimension of the wall 72 is the same as the circumferential dimension of the coil connection recess 73. Therefore, the wall portion 72 and the coil connection concave portion 73 can be manufactured by cutting and raising a part of the plate member constituting the bus bar 70 from the other side in the circumferential direction to the one side in the circumferential direction. Thus, the wall 72 and the coil connection recess 73 can be easily manufactured. In the present embodiment, in order to produce the wall 72 in this manner, the wall 72 is provided only on one of the inner edges of the coil connection recess 73 on both sides in the circumferential direction. That is, no wall portion is provided at the inner edge portion on the opposite side of the side where the wall portion 72 is provided in the coil connection concave portion 73.

  For example, in the case where a portion of the plate member is cut and raised on both sides in the circumferential direction, and a pair of wall portions is provided on the inner edge portion on both sides in the circumferential direction of the coil connection recess, the axial dimension of the pair of wall portions is the coil connection recess respectively Smaller than the circumferential dimension of When the axial dimensions of the pair of wall portions are the same as each other, the axial dimension of the wall portions is about half the circumferential dimension of the coil connection recess. In this case, the axial dimension of the wall tends to be relatively small.

  On the other hand, in the present embodiment, as described above, by providing the wall portion 72 only in one of the inner edge portions on both sides in the circumferential direction of the coil connection recess 73, the axial dimension of the wall portion 72 Can be made the same as the circumferential dimension of the coil connection recess 73. As a result, the axial dimension of the wall 72 can be made relatively large. Therefore, the coil lead-out wire 35a is easily supported by the wall 72, and the wall 72 and the coil lead-out wire 35a are easily fixed by welding.

  In this specification, "the axial dimension of the wall is the same as the circumferential dimension of the coil connection recess" means that the axial dimension of the wall is exactly the same as the circumferential dimension of the coil connection recess. In addition to being, it also includes that the axial dimension of the wall is approximately the same as the circumferential dimension of the coil connection recess.

  The upper end of the wall 72 is, for example, disposed at the same position in the axial direction as the upper end of the coil leader 35a. The upper end of the wall 72 may be above or below the upper end of the coil leader 35a. The wall 72 is provided for each of the plurality of coil connection recesses 73. Each wall portion 72 axially protrudes from an inner edge portion on the same side in the circumferential direction of each coil connection concave portion 73.

  As shown in FIG. 4, the bus bar main body 71 has a bus bar penetrating portion 71 a penetrating the bus bar main body 71 in the axial direction. The convex portion 34 e is passed through the bus bar penetrating portion 71 a. Thus, the convex portion 34 e is passed through the holder penetrating portion 62 of the bus bar holder 60 and the bus bar penetrating portion 71 a of the bus bar 70. Therefore, the bus bar unit 90 can be positioned with respect to the insulator 34 by the convex portion 34 e. Further, as described above, the upper end of the convex portion 34 e is the welded portion 34 f whose outer diameter is large, and contacts the upper surface of the bus bar 70. Therefore, the bus bar 70 and the bus bar holder 60 can be pressed from the upper side by the welded portion 34 f, and the bus bar unit 90 can be suppressed from being separated upward from the convex portion 34 e. In this manner, the bus bar unit 90 can be fixed to the insulator 34 by the convex portion 34 e.

  As shown in FIG. 3, the circumferential position of the bus bar penetrating portion 71 a is different from the circumferential position of the coil connection concave portion 73. Therefore, the bus bar penetration part 71a can be provided in the location where the dimension of the radial direction in the bus bar 70 is comparatively large. Thus, the bus bar penetrating portion 71a can be easily manufactured. Further, as compared with the case where the circumferential position of the bus bar penetrating portion 71a and the circumferential position of the coil connection concave portion 73 are the same, it is possible to suppress that the bus bar 70 becomes too thin in the radial direction and secures the rigidity of the bus bar 70 It's easy to do. Moreover, it can suppress that the electrical resistance of the bus-bar 70 becomes large too much.

  In the present embodiment, the circumferential position of the bus bar penetrating portion 71a is the same as the circumferential position at the center of the coil connection concave portions 73 adjacent in the circumferential direction. The bus bar penetrating portion 71 a is disposed radially outward of the coil connection concave portion 73. A plurality of bus bar penetrating portions 71a are provided along the circumferential direction. In FIG. 3, for example, two bus bar penetrating portions 71 a are provided.

  In the present embodiment, the bus bar 70 is a neutral point bus bar connecting two or more coils 35 as a neutral point. In the neutral point bus bar, compared to the phase bus bar connected to the power supply for supplying power to the stator 30, two or more coils 35 to be connected are easily arranged adjacent to each other in the circumferential direction. Therefore, the bus bar 70 connecting the coil lead wires 35a of the plurality of coils 35 adjacent in the circumferential direction as described above can be suitably used as a neutral point bus bar.

Second Embodiment
As shown in FIG. 5, in the bus bar main body 171 of the bus bar 170 of the present embodiment, the shape of the inside of the coil connection recess 173 is a triangular shape having a vertex on the radially outer side when viewed from the upper side. In the present embodiment, the edge portions on both sides in the circumferential direction of the coil connection recess 173 of the bus bar main body 171 are caulking portions 173 a and 173 b caulked toward the other edge portion. The coil leader 35a inserted into the coil connection recess 173 is pinched in a state of being in contact with the crimped portions 173a and 173b. The crimped portions 173a and 173b and the coil leader 35a are fixed by welding, for example.

  According to the present embodiment, the bus bar main body 171 has the caulking portions 173a and 173b. Therefore, for example, the bus bar 170 can be manufactured by curving the plate-like bus bar member 174 extending linearly as shown in FIG. 6 as shown by the arrow in FIG. 6 and caulking. Since the bus bar members 174 extend in a straight line, the number of the bus bar members 174 can be increased from one plate member. Therefore, the yield of bus bar 170 can be improved.

  The bus bar member 174 has a coil connection recess 175 before being crimped. Inside the coil connection recess 175, the coil lead-out wire 35a is inserted. In this state, when the bus bar member 174 is crimped and curved, the edge portions 175a and 175b on both sides in the circumferential direction of the coil connection concave portion 175 are crimped in a direction approaching each other to form crimped portions 173a and 173b. Thus, the coil leader 35a inserted inside the coil connection recess 173 can be sandwiched by the crimped portions 173a and 173b in a state of being in contact with each other.

  The present invention is not limited to the above-described embodiment, and the following other configurations can be adopted. If the bus bar main body is arc-shaped along the circumferential direction as a whole, a part of the radially inner edge and a part of the radially outer edge may not be arcs. For example, a part of the radially inner edge portion of the bus bar main body may protrude radially inward. In this case, a coil connection recess may be provided in a portion of the radially inner edge portion of the bus bar main body that protrudes inward in the radial direction.

  The shape and number of coil connection recesses are not particularly limited. The plurality of coil lead wires inserted into the plurality of coil connection recesses may be coil lead wires extending from each of the plurality of coils disposed sandwiching the other coil in the circumferential direction.

  The wall portion may be manufactured by fixing another member to the bus bar main body. The wall may protrude downward from the bus bar main body. The wall portion may be provided in a pair at the inner edge portions on both sides in the circumferential direction of the coil connection recess. The wall may not be provided. The bus bar may be directly fixed to the insulator. In this case, the bus bar holder may not be provided. The bus bar may be a phase bus bar.

  In addition, the application of the motor of embodiment mentioned above is not specifically limited. Moreover, each structure mentioned above can be combined suitably in the range which does not contradiction mutually.

  DESCRIPTION OF SYMBOLS 10 motor 20 rotor 21 shaft 30 stator 31 stator core 32 core back 33 teeth 34 insulator 34a insulator body 34e convex portion 35 coil 70, 170 ... bus bar, 71, 171 ... bus bar main body, 71 a ... bus bar penetrating portion, 72 ... wall portion, 73, 173 ... coil connection concave portion, 173 a, 173 b ... caulking portion, J ... central axis, θ ... central angle

Claims (8)

A rotor having a shaft disposed along a central axis,
A stator having a plurality of coils and surrounding the rotor radially outward of the rotor;
A bus bar disposed on one side in the axial direction of the stator and electrically connected to a lead extending from the coil;
Equipped with
The bus bar has a plate shape whose plate surface intersects with the axial direction, and has an arc-shaped bus bar main body along the circumferential direction,
The central angle of the bus bar body is 120 ° or less,
The bus bar main body has a coil connection recess disposed at a radial inner edge portion of the bus bar main body,
The coil connection recess is recessed radially outward,
The motor, wherein the conducting wire is inserted into the coil connection recess and connected to the bus bar. Of the radially inner edge portion of the bus bar main body, the entire portion other than the coil connection concave portion is an arc portion extending in an arc shape,
The motor according to claim 1, wherein the coil connection recess is recessed radially outward from the arc portion. The bus bar has a wall portion that protrudes in the axial direction from an edge portion on one circumferential side of the coil connection recess in the bus bar main body,
The conducting wire is fixed to the wall portion,
The motor according to claim 1, wherein an axial dimension of the wall portion is the same as a circumferential dimension of the coil connection recess.   The motor according to claim 3, wherein the wall portion protrudes to one side in the axial direction from the bus bar main body. The plurality of coils are disposed along a circumferential direction,
A plurality of coil connection recesses are provided,
The motor according to any one of claims 1 to 4, wherein the conductive wires respectively inserted into the plurality of coil connection recesses extend from each of the coils adjacent in the circumferential direction.   The motor according to any one of claims 1 to 5, wherein the bus bar is a neutral point bus bar connecting two or more of the coils as a neutral point. The stator is
A stator core having a circumferentially extending core back and a plurality of teeth extending radially inward from the core back;
An insulator mounted on the stator core;
Have
The bus bar main body has a bus bar penetrating portion axially penetrating the bus bar main body, and is disposed on one side in the axial direction of the insulator.
The insulator is
Insulator body,
A convex portion which protrudes from the insulator main body to one side in the axial direction and is passed through the bus bar penetrating portion;
Have
The motor according to any one of claims 1 to 6, wherein a circumferential position of the bus bar penetrating portion is different from a circumferential position of the coil connection concave portion. Edges on both sides in the circumferential direction of the coil connection recess in the bus bar main body are crimped portions caulked toward the other edge,
The motor according to any one of claims 1 to 7, wherein the wire is pinched in a state of being in contact with the caulking portion.

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