Motor and method for manufacturing motor

Abstract

A motor according to one embodiment of the present invention includes: a terminal portion electrically connected to a commutator fixed to a rotor rotatable about a central axis; and a holding member that holds the terminal portion. The terminal part shaft has a plate-shaped terminal main body part extending in the axial direction. The terminal main body portion has a hole portion penetrating the terminal main body portion in a plate thickness direction of the terminal main body portion. The holding member is provided with a holding hole which penetrates the holding member in the axial direction and through which the terminal main body portion passes. The terminal body portion has a protruding portion that extends from an edge portion on one side in the axial direction of the hole portion toward the other side in the axial direction, is disposed on one side in the axial direction with respect to the holding hole, and protrudes toward one side in the plate thickness direction by being crimped toward one side in the plate thickness direction. An end portion on the other side in the axial direction of the protruding portion faces a peripheral edge portion of the holding hole in the axial direction.

Description

Technical Field

[0001] The invention relates to a motor and a method for manufacturing the motor. Background Art

[0002] A motor is known in which a thorn is provided on a motor terminal that electrically connects an external terminal to a commutator, and the thorn is made to bite into the inner wall of a terminal hole provided on an end cover, thereby suppressing movement of the motor terminal when the external terminal is mounted on the motor terminal (for example, Patent Document 1). Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 7-163096 Summary of the invention

[0004] In the motor as described above, when the motor terminal is passed through the terminal hole during the manufacturing process of the motor, the inner wall of the terminal hole may be damaged by the thorn. In this case, it is difficult for the thorn to bite into the inner wall of the terminal hole, so it may be impossible to accurately determine the position of the motor terminal relative to the end cap.

[0005] In view of the above circumstances, one object of one embodiment of the present invention is to provide a motor and a method for manufacturing the motor, which are capable of determining the axial position of a terminal portion with respect to a holding member with high accuracy.

[0006] One aspect of the motor of the present invention comprises: a terminal portion, which is electrically connected to a commutator fixed to a rotor that can rotate around a central axis; and a retaining member, which retains the terminal portion. The terminal portion has a plate-shaped terminal body portion extending in the axial direction. The terminal body portion has a hole portion, which penetrates the terminal body portion in the plate thickness direction of the terminal body portion. The retaining member is provided with a retaining hole, which penetrates the retaining member in the axial direction and allows the terminal body portion to pass through. The terminal body portion has a protrusion, which extends from the edge of the hole portion on one axial side to the other axial side, and is arranged at a position closer to one axial side than the retaining hole, and the protrusion is riveted toward one side in the plate thickness direction and protrudes to one side in the plate thickness direction. The end of the protrusion on the other axial side is axially opposite to the peripheral edge of the retaining hole.

[0007] In one embodiment of the manufacturing method of the motor of the present invention, the motor comprises: a terminal portion electrically connected to a commutator fixed to a rotor rotatable around a motor axis; and a retaining member that retains the terminal portion, and the manufacturing method comprises a retaining step of retaining the terminal portion on the retaining member. The terminal portion comprises a plate-shaped terminal main body extending in the axial direction. The terminal main body comprises: a hole portion that penetrates the terminal main body in the plate thickness direction of the terminal main body; and a protrusion that protrudes from the edge of the hole on one axial side to the other axial side. The retaining step comprises: an inserting step of passing the terminal main body through the retaining hole that penetrates the retaining member in the axial direction from the other axial side, so that the protrusion is located at a position closer to the axial side than the retaining hole; and a caulking step of caulking the protrusion to one side in the plate thickness direction, so that the end of the protrusion on the other axial side is opposite to the peripheral edge of the retaining hole in the axial direction.

[0008] According to one aspect of the present invention, in a motor and a method for manufacturing a motor, the axial position of a terminal portion relative to a holding member can be determined with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a perspective view showing a motor according to an embodiment. Figure 2 This is a cross-sectional view showing a motor according to an embodiment. Figure 3 It is a perspective view showing a holding member and a terminal portion according to one embodiment. Figure 4 It is a cross-sectional view showing a holding member and a terminal portion according to one embodiment. Figure 5 It is a perspective view showing a terminal portion according to one embodiment. Figure 6 This is an enlarged view showing a holding member and a terminal portion according to one embodiment. Figure 7 It is an enlarged cross-sectional view showing a holding member and a terminal portion according to one embodiment. Figure 8 This is an enlarged cross-sectional view showing a part of a protrusion according to one embodiment. Fig. 9 This is a flowchart showing a method for manufacturing a motor according to an embodiment. Fig.10 It is a cross-sectional view showing an insertion step of a method for manufacturing a motor according to an embodiment. Fig.11 It is a cross-sectional view showing a caulking step in the method for manufacturing a motor according to an embodiment. DETAILED DESCRIPTION

[0010] Hereinafter, the motor and the method for manufacturing the motor according to the embodiment of the present invention will be described with reference to the accompanying drawings. In addition, the scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical concept of the present invention. In addition, in the following drawings, in order to facilitate the understanding of each structure, the actual structure is sometimes different from the scale, quantity, etc. in each structure.

[0011] In the following description, each figure appropriately shows the Z axis. In the present embodiment, the Z axis direction is the direction in which the central axis J of the motor extends. The central axis J appropriately shown in each figure is a virtual axis. In the following description, the direction parallel to the Z axis direction is referred to as the "axial direction". The radial direction centered on the central axis J is referred to as the "radial direction". The circumferential direction centered on the central axis J is referred to as the "circumferential direction". In each figure, the circumferential direction is indicated by the arrow θ. In the axial direction, the side (+Z side) to which the arrow of the Z axis points is referred to as the "axial one side" or the "upper side". In the axial direction, the opposite side (-Z side) to the side to which the arrow of the Z axis points is referred to as the "axial other side" or the "lower side". In addition, the upper side and the lower side are merely names used to illustrate the relative positional relationship of each part, and the actual configuration relationship, etc. may also be a configuration relationship other than the configuration relationship indicated by these names, etc.

[0012] In the following description, each figure appropriately shows the plate thickness direction Dt. The plate thickness direction Dt is the thickness direction of the terminal body. The plate thickness direction Dt is a direction intersecting the axial direction. In the present embodiment, the plate thickness direction Dt is a direction orthogonal to the axial direction. In the present embodiment, the plate thickness direction Dt is a direction parallel to the radial direction. The plate thickness direction Dt may not be a direction parallel to the radial direction. In the following description, the side (+Dt side) to which the arrow of the plate thickness direction Dt points is referred to as "one side of the plate thickness direction Dt". In the present embodiment, "one side of the plate thickness direction Dt" is the radial inner side. The opposite side (-Dt side) to the side to which the arrow of the plate thickness direction Dt points is referred to as "the other side of the plate thickness direction Dt". In the present embodiment, "the other side of the plate thickness direction Dt" is the radial outer side. In addition, "one side of the plate thickness direction Dt" may be the radial outer side, in which case, "the other side of the plate thickness direction Dt" is the radial inner side.

[0013] In the following description, each figure appropriately shows the width direction Dw. The width direction Dw is a direction orthogonal to both the axial direction and the plate thickness direction Dt. In the following description, the side (+Dw side) to which the arrow of the width direction Dw points is referred to as "one side of the width direction Dw". The opposite side (-Dw side) to the side to which the arrow of the width direction Dw points is referred to as "the other side of the width direction Dw".

[0014] like Figure 1As shown, the motor 10 of this embodiment is formed into a substantially cylindrical shape extending in the axial direction. In this embodiment, the motor 10 is a brushed motor. The motor 10 is a DC brushed motor. Figure 2 As shown, the motor 10 includes a housing 12 , a rotor 20 , a commutator 26 , a magnet 28 , and a brush unit 29 .

[0015] like Figure 1 As shown, the housing 12 is substantially cylindrical and extends axially with the central axis J as the center. Figure 2 As shown, inside the housing 12, various components constituting the motor 10, such as the rotor 20, the commutator 26, the magnet 28, and the brush unit 29, are housed. The housing 12 has a housing body 13 and a cover 17. The housing body 13 is cylindrical and extends axially with the central axis J as the center. The housing body 13 is open at the upper side. The housing body 13 has a peripheral wall 14.

[0016] The peripheral wall portion 14 is cylindrical and extends axially around the central axis J. The peripheral wall portion 14 surrounds the components of the motor 10 such as the rotor 20, the commutator 26, and the magnet 28 from the radially outer side. The upper end of the peripheral wall portion 14 is the upper end of the housing body 13. The peripheral wall portion 14 has an opening portion opened at the upper side. The peripheral wall portion 14 is provided with a peripheral wall cutout portion 14c.

[0017] like Figure 1 As shown, the peripheral wall cutout 14c is a cutout extending downward from the upper end of the peripheral wall 14. The peripheral wall cutout 14c penetrates the peripheral wall 14 in the radial direction. When viewed from the radial direction, the peripheral wall cutout 14c is a substantially rectangular shape with the long side extending in the axial direction. Figure 2 As shown in FIG. 1 , in the present embodiment, two peripheral wall cutouts 14c are provided in the peripheral wall portion 14. The peripheral wall cutouts 14c are provided at positions facing each other in the radial direction with the center axis J interposed therebetween.

[0018] The cover 17 is fixed to the upper end of the housing body 13. The cover 17 blocks the opening of the peripheral wall 14 from the upper side. Figure 1 As shown, the cover portion 17 has a cover body portion 17a and a first bearing retaining portion 17d. The cover body portion 17a is in a substantially annular plate shape centered on the central axis J. The plate surface of the cover body portion 17a faces the axial direction. The cover body portion 17a is fixed to the upper end of the peripheral wall portion 14. The cover body portion 17a is provided with a cover cutout portion 17b.

[0019] The cover cutout portion 17b is a cutout extending from the radially outer end of the cover body portion 17a to the radially inner side. The cover cutout portion 17b penetrates the cover body portion 17a in the axial direction. When viewed from the axial direction, the cover cutout portion 17b has a roughly rectangular shape with the long sides extending in the radial direction. In the present embodiment, the peripheral wall portion 14 is provided with two cover cutout portions 17b. Each cover cutout portion 17b is arranged at a radially opposite position across the center axis J. The radial outer edge of each cover cutout portion 17b is connected to a different peripheral wall cutout portion 14c. Thus, a shell cutout portion 12a consisting of a peripheral wall cutout portion 14c and a cover cutout portion 17b is provided on the shell 12. Two shell cutout portions 12a are provided on the shell 12.

[0020] like Figure 2 As shown, the first bearing holding portion 17d protrudes upward from the radial inner edge of the cover body 17a. The first bearing holding portion 17d is cylindrical centered on the central axis J. The first bearing 91 is held on the inner peripheral surface of the first bearing holding portion 17d.

[0021] The rotor 20 is rotatable about a central axis J. The rotor 20 includes a shaft 21, an armature 22, and a commutator retaining portion 25. The shaft 21 is cylindrical and extends axially about the central axis J. The upper end of the shaft 21 is supported by a first bearing 91 so as to be rotatable about the central axis J. The lower portion of the shaft 21 is supported by a second bearing 92 so as to be rotatable about the central axis J. Therefore, the shaft 21 is rotatable about the central axis J. The lower end of the shaft 21 protrudes to the outside of the housing 12. The lower end of the shaft 21 is connected to a driven portion not shown in the figure. The rotation of the shaft 21 is transmitted to the driven portion.

[0022] The armature 22 surrounds the shaft 21 from the radially outer side. The armature 22 is fixed to the outer peripheral surface of the shaft 21. The armature 22 is rotatable around the central axis J together with the shaft 21. The armature 22 has an iron core 23 and a plurality of coil portions 24.

[0023] The iron core 23 is in the shape of a ring extending axially with the central axis J as the center. In the present embodiment, the iron core 23 is formed by stacking a plurality of electromagnetic steel plates in the axial direction. The shaft 21 passes axially through the inside of the iron core 23. The inner peripheral surface of the iron core 23 is fixed to the outer side surface of the shaft 21. Thus, the armature 22 is fixed to the shaft 21. The iron core 23 has: a roughly annular iron core back not shown; and a plurality of teeth not shown extending radially inward from the iron core back. In the present embodiment, the iron core 23 has, for example, 7 teeth.

[0024] A plurality of coil portions 24 are respectively mounted on the core 23. In the present embodiment, the armature 22 has seven coil portions 24. Each coil portion 24 has a coil body portion 24a and a coil lead wire 24b. Each coil body portion 24a is mounted on a different tooth portion. Each coil body portion 24a is arranged along the circumferential direction. Each coil lead wire 24b is led out from the coil body portion 24a to the upper side.

[0025] The commutator holding portion 25 has a substantially cylindrical shape extending in the axial direction around the central axis J. The commutator holding portion 25 surrounds the shaft 21 from the radially outer side. The commutator holding portion 25 is fixed to the shaft 21. The commutator holding portion 25 is arranged above the iron core 23.

[0026] The commutator 26 is in the shape of a plate extending in the axial direction. The plate surface of the commutator 26 faces radially. The commutator 26 is conductive. Although the icon is omitted, in the present embodiment, the motor 10 has 7 commutators 26. When viewed from the axial direction, each commutator 26 is in the shape of an arc. Each commutator 26 is fixed on the outer peripheral surface of the commutator retaining portion 25. Thus, each commutator 26 is fixed to the rotor 20. Each commutator 26 can rotate around the central axis J together with the rotor 20. Each commutator 26 is arranged at intervals in the circumferential direction. A coil connecting portion 26a is provided at the lower end of each commutator 26. Each coil connecting portion 26a is respectively connected to a different coil lead wire 24b. Thus, each commutator 26 is connected to a different coil portion 24.

[0027] Each magnet 28 extends in the axial direction. When viewed from the axial direction, the magnet 28 is in the shape of an arc with the central axis J as the center. In the present embodiment, the motor 10 has two magnets 28. Each magnet 28 is arranged at a position radially outward of the core 23. Each magnet 28 is radially opposite to the core 23 at a distance. Each magnet 28 is fixed to the inner circumferential surface of the peripheral wall portion 14. Each magnet 28 is arranged at a distance in the circumferential direction.

[0028] The brush unit 29 electrically connects the power cable 98 connected to the external power source (not shown) and the commutator 26. As described above, the commutator 26 is connected to the coil portion 24. Thus, the external power source is electrically connected to the coil portion 24. When current is supplied from the external power source to the coil portion 24, the armature 22 is excited. When the armature 22 is excited, the rotor 20 rotates around the central axis J by the magnetic force between the armature 22 and the magnet 28. Figure 1 As shown in FIG. 1 , in this embodiment, the motor 10 has two brush units 29. A portion of each brush unit 29 is exposed to the outside of the housing 12 through the housing cutout 12a. Figure 2As shown, the brush units 29 are arranged to face each other in the radial direction across the central axis J. Each brush unit 29 includes a holding member 30 , a terminal portion 40 , a brush 51 , an elastic member 52 , and a connecting wire 53 . That is, the motor 10 includes the holding member 30 and the terminal portion 40 .

[0029] The holding member 30 holds the terminal portion 40, the brush 51 and the elastic member 52. In the present embodiment, the holding member 30 is made of resin. The holding member 30 has insulating properties. The holding member 30 is fixed to the housing 12. The holding member 30 is opposite to the commutator 26 in the radial direction. Figure 3 As shown in FIG. 1 , the holding member 30 includes a cylindrical portion 31 and a holding wall portion 35. Figure 4 As shown, a holding hole 30 a is provided on the holding member 30 .

[0030] like Figure 3 As shown, the cylindrical portion 31 is in a generally quadrangular cylindrical shape extending in the radial direction. The cylindrical portion 31 is open on both sides in the radial direction. The radial inner end of the cylindrical portion 31 is the radial inner end of the retaining member 30. Figure 2 As shown, the cylindrical portion 31 is radially opposite to the commutator 26. Figure 3 As shown in FIG. 1 , the cylindrical portion 31 is provided with a cutout portion 31a. The cutout portion 31a is a cutout extending from the radially inner end of the cylindrical portion 31 to the radially outer side. The cutout portion 31a penetrates the wall portion of the cylindrical portion 31 on one side (+Dw side) in the width direction Dw. The inside of the cylindrical portion 31 is connected to the outside of the cylindrical portion 31 via the cutout portion 31a.

[0031] like Figure 3 As shown, the retaining wall portion 35 is connected to the cylindrical portion 31. The retaining wall portion 35 includes a connecting portion 35a, an upper wall portion 35b and a side wall portion 35k. The connecting portion 35a is in the shape of a plate extending in a direction orthogonal to the axial direction. When viewed from the axial direction, the connecting portion 35a is a roughly rectangular shape with a long side extending in the radial direction. The connecting portion 35a is arranged at a position above the cylindrical portion 31. The connecting portion 35a is connected to the cylindrical portion 31 in the axial direction.

[0032] The upper wall portion 35b protrudes upward from the connecting portion 35a. The upper wall portion 35b is in the shape of a generally quadrangular prism extending in the radial direction. When viewed from the radial direction, the upper wall portion 35b is in the shape of a generally rectangular shape with the long side extending in the width direction Dw. Figure 4 As shown in FIG. 1 , the radially outer end of the upper wall portion 35b is located radially outward of the cylindrical portion 31. Figure 3 As shown, the upper wall portion 35b is provided with a recess 35c, an upper wall hole portion 35e, a first recess 35g and a second recess 35h.

[0033] The recess 35c is recessed downward from the surface of the upper wall portion 35b that faces upward. The recess 35c is recessed downward from the surface of the retaining component 30 that faces upward, i.e., one axial side (+Z side), i.e., the other axial side (-Z side). The recess 35c is provided in a portion on the central side in the width direction Dw of the retaining wall portion 35. When viewed from the radial direction, the recess 35c is roughly rectangular with the long sides extending in the axial direction. The recess 35c extends in the radial direction. In the axial direction, the position of the lower end of the recess 35c is roughly the same as the upper end of the connecting portion 35a. As shown in FIG. Figure 4 As shown, the recessed portion 35c is open on both sides in the radial direction, that is, in the plate thickness direction Dt. The surface of the inner side surface of the recessed portion 35c that faces upward, that is, on one side in the axial direction, is a facing surface 35d.

[0034] The upper wall hole 35e is a hole that penetrates the upper wall 35b in the axial direction. Figure 3 As shown, the upper wall hole portion 35e is provided at the radially outer portion of the upper wall portion 35b. The dimension of the upper wall hole portion 35e in the width direction Dw is larger than the dimension of the recessed portion 35c in the width direction Dw. The end of one side (+Dw side) of the upper wall hole portion 35e in the width direction Dw is located at a position closer to the side of the recessed portion 35c in the width direction Dw. The end of the other side (-Dw side) of the upper wall hole portion 35e in the width direction Dw is located at a position closer to the other side of the recessed portion 35c in the width direction Dw. The interior of the upper wall hole portion 35e is connected to the interior of the recessed portion 35c.

[0035] The first recess 35g is recessed from the surface of the upper wall portion 35b facing one side in the width direction Dw (+Dw side) toward the other side in the width direction Dw (-Dw side). The second recess 35h is recessed from the surface of the upper wall portion 35b facing the other side in the width direction Dw toward one side in the width direction Dw. The first recess 35g and the second recess 35h extend in the radial direction and are open on both sides in the radial direction. Figure 1 As shown, the edge of the cover cutout portion 17b is inserted into the first recess 35g and the second recess 35h. Thus, the axial position and circumferential position of each brush unit 29 relative to the housing 1 are determined. In addition, the surface of the upper wall portion 35b facing radially inward is in contact with the inner surface of the cover cutout portion 17b in the radial direction. Thus, it is possible to suppress the movement of each brush unit 29 in the radial direction relative to the housing 12. The portion of the upper wall portion 35b that is above the first recess 35g and the second recess 35h is located outside the housing 12 via the cover cutout portion 17b.

[0036] like Figure 4 As shown, the side wall portion 35k is in the shape of a plate extending in the axial direction. The plate surface of the side wall portion 35k faces the radial direction. The upper end of the side wall portion 35k is connected to the radially outer edge of the upper wall portion 35b. The side wall portion 35k is arranged at a position radially outward of the cylindrical portion 31. The side wall portion 35k is connected to the cylindrical portion 31 in the radial direction. The lower end of the side wall portion 35k is located at a position lower than the cylindrical portion 31. As shown in FIG. Figure 1 As shown, the radially outward surface of the side wall portion 35 k is exposed to the outside of the housing 12 through the peripheral wall cutout portion 14 c.

[0037] like Figure 4 As shown, the retaining hole 30a is a hole that penetrates the retaining component 30 in the axial direction. In more detail, the retaining hole 30a is a hole that penetrates the cylindrical portion 31 and the connecting portion 35a in the axial direction. Although the illustration is omitted, when viewed from the axial direction, the retaining hole 30a is a roughly rectangular shape with the long side extending in the width direction Dw. The surface of the retaining hole 30a facing radially outward is composed of the surfaces of the cylindrical portion 31 and the connecting portion 35a facing radially outward. The surface of the retaining hole 30a facing radially inward is the surface of the side wall portion 35k facing radially inward. In the axial direction, the position of the upper end of the retaining hole 30a is the same position as the position of the opposite surface 35d. The upper end of the surface facing radially in the inner side surface of the retaining hole 30a is connected to the opposite surface 35d. The interior of the retaining hole 30a is connected to the interior of the recess 35c and the interior of the upper wall hole portion 35e respectively.

[0038] like Figure 5 As shown in FIG. 1 , the terminal portion 40 is in a substantially L-shaped plate shape when viewed from the width direction Dw. In the present embodiment, the terminal portion 40 is made of metal. The terminal portion 40 has conductivity. The terminal portion 40 includes a terminal main body portion 41 and an extension portion 46 .

[0039] The terminal body 41 is in the shape of a plate extending in the axial direction. The plate surface of the terminal body 41 faces the radial direction. Figure 4 As shown, the terminal body portion 41 passes through the retaining hole 30a and the upper wall hole portion 35e in the axial direction. Figure 5 As shown, the terminal body portion 41 includes a first body portion 42 , a second body portion 43 , a protruding portion 44 and a third body portion 45 .

[0040] The first main body 42 is the upper part of the terminal main body 41. The upper end of the first main body 42 is the upper end of the terminal main body 41. When viewed from the radial direction, the first main body 42 is roughly rectangular with the long side extending in the axial direction. The first main body 42 is provided with a through hole 42a. The through hole 42a is a circular hole that passes through the first main body 42 in the radial direction. Figure 3 As shown in FIG. 1 , the first main body portion 42 is located above the holding member 30. Figure 1 As shown, the first main body 42 is arranged outside the housing 12. The cable terminal 98a of the power cable 98 is inserted into the first main body 42 from the upper side. Thus, the terminal 40 and the power cable 98 are connected. Therefore, the terminal 40 and the external power supply (not shown) are electrically connected via the power cable 98.

[0041] like Figure 5As shown in FIG. 1 , the second main body portion 43 protrudes downward from the first main body portion 42. When viewed from the radial direction, the second main body portion 43 is substantially rectangular. Figure 4 As shown, the upper portion of the second main body portion 43 passes through the upper wall hole portion 35e in the axial direction. In addition, the lower portion of the second main body portion 43 passes through the retaining hole 30a in the axial direction. As a result, the position of the terminal portion 40 relative to the retaining member 30 in the radial direction and the width direction Dw is determined. Figure 5 As shown, the second body portion 43 is provided with a hole portion 43a. That is, the terminal body portion 41 has a hole portion 43a.

[0042] The hole portion 43a is a hole that penetrates the second main body portion 43 in the radial direction. The hole portion 43a is a hole that penetrates the terminal main body portion 41 in the radial direction, that is, in the plate thickness direction Dt. The hole portion 43a has a first hole portion 43c, a second hole portion 43d, and a third hole portion 43e. The first hole portion 43c is a portion of the hole portion 43a that is closer to the side of the width direction Dw (+Dw side) than the protrusion 44. The second hole portion 43d is a portion of the hole portion 43a that is closer to the other side of the width direction Dw (-Dw side) than the protrusion 44. The first hole portion 43c and the second hole portion 43d are holes whose long sides extend in the axial direction, respectively. The third hole portion 43e connects the lower end of the first hole portion 43c and the lower end of the second hole portion 43d. The third hole portion 43e is a hole whose long side extends in the width direction Dw. As Figure 6 As shown, the dimension of the hole 43a in the width direction Dw, that is, the width Wh of the hole 43a is larger than the dimension of the recess 35c in the width direction Dw, that is, the width Wc of the recess 35c.

[0043] like Figure 5 As shown, the protrusion 44 is in the shape of a plate extending from the upper side of the hole 43a, that is, the edge of one axial side (+Z side) to the lower side, that is, the other axial side (-Z side). The protrusion 44 is connected to the second main body 43. The protrusion 44 is a part of the second main body 43. Figure 4 As shown, the protrusion 44 protrudes radially inward from the upper edge of the hole 43a, that is, one side (+Dt side) in the plate thickness direction Dt. In the present embodiment, the protrusion 44 is riveted radially inward by the riveting jig 95 in the riveting step S02 as part of the manufacturing process of the motor 10 described below, and protrudes radially inward. That is, the protrusion 44 is riveted radially by the riveting jig 95. Figure 7 As shown in FIG. 1 , the lower side of the protrusion 44, that is, the end on the other axial side, is axially opposite to the peripheral edge of the holding hole 30a. The lower end of the protrusion 44 is axially opposite to the peripheral edge of the holding hole 30a in the opposite surface 35d. Thus, even if a force is applied to the terminal portion 40 toward the lower side, the protrusion 44 is in contact with the opposite surface 35d, so that the terminal portion 40 can be suppressed from moving downward. The protrusion 44 has a first outer surface 44a, a front end 44g, and a second outer surface 44h.

[0044] The first outer surface 44a is a downward-facing surface of the outer surface of the protrusion 44. In the present embodiment, the hole 43a and the protrusion 44 are respectively provided by stamping the terminal body 41. Figure 8 As shown, a fracture surface 44b and a shear surface 44c are provided on the first outer surface 44a. In addition, in the present embodiment, the hole portion 43a and the protrusion 44 are respectively formed by stamping the terminal body portion 41 from the radial outer side to the radial inner side. Therefore, the fracture surface 44b is closer to the radial inner side, that is, one side (+Dt side) of the plate thickness direction Dt than the shear surface 44c. The fracture surface 44b is provided in the radial inner part of the first outer surface 44a. Therefore, the burr 44d generated on the fracture surface 44b protrudes radially inward from the first outer surface 44a. The burr 44d is axially opposite to the opposite surface 35d. In addition, the hole portion 43a and the protrusion 44 can also be provided by stamping the terminal body portion 41 from the radial inner side. In this case, the fracture surface 44b is located at a position closer to the radial outer side than the shear surface 44c.

[0045] like Figure 7 As shown, the front end portion 44g is the lower side of the protrusion 44, that is, the end on the other axial side (-Z side), and is the radially inner side, that is, the end on one side (+Dt side) in the plate thickness direction Dt. In the present embodiment, the ratio of the distance L1 in the plate thickness direction Dt between the front end portion 44g and the terminal main body portion 41 to the thickness Tp of the protrusion 44 is 50% or less. In addition, in the present embodiment, the ratio of the distance between the portion of the protrusion 44 connected to the edge of the hole portion 43a and the front end portion 44g, that is, the length Lp of the protrusion to the thickness Tp of the protrusion 44 is 150% or more and 250% or less. Moreover, Figure 6 The dimension of the protrusion 44 in the width direction Dw shown in FIG. 1 , that is, the ratio of the width Wp of the protrusion 44 to the thickness Tp of the protrusion 44 is 150% or more and 250% or less. Figure 7 As shown, the second outer surface 44 h is a surface facing radially outward among the outer surfaces of the protrusion 44 .

[0046] like Figure 5 As shown in FIG. 1 , the third main body portion 45 protrudes downward from the second main body portion 43. When viewed from the radial direction, the third main body portion 45 is substantially rectangular with its long sides extending in the axial direction. Figure 4 As shown, the third body portion 45 passes through the holding hole 30a in the axial direction. A portion of the radially inner surface of the third body portion 45 is exposed inside the cylindrical portion 31. The lower end of the third body portion 45 is located below the cylindrical portion 31.

[0047] like Figure 5As shown, the extension portion 46 extends from the lower side of the terminal body portion 41, that is, the end portion on the other axial side (-Z side) in the radial direction, that is, the plate thickness direction Dt. In this embodiment, the extension portion 46 extends radially inward from the lower end of the terminal body portion 41. The extension portion 46 may also extend radially outward from the lower side of the terminal body portion 41. Figure 4 As shown, the surface of the extension portion 46 facing upward, that is, on one axial side (+Z side) is axially opposed to the holding member 30. Thus, the terminal portion 40 can be prevented from moving upward relative to the holding member 30.

[0048] Figure 2 The brush 51 shown is in contact with the commutator 26 and supplies current to the commutator 26. In the present embodiment, the brush 51 is a columnar shape extending in the radial direction. In the present embodiment, the brush 51 is made of carbon. The brush 51 has conductivity. The brush 51 may be made of metal. The brush 51 is housed inside the cylindrical portion 31. The elastic component 52 can be elastically deformed in the radial direction. In the present embodiment, the elastic component 52 is a coil spring. In the present embodiment, the elastic component 52 has conductivity. The elastic component 52 may not have conductivity. The radially outer end of the elastic component 52 protrudes radially outward from the cylindrical portion 31 through the opening of the cylindrical portion 31 and is supported radially by the third main body portion 45 of the terminal portion 40. The radially inner end of the elastic component 52 is fixed to the brush 51. Therefore, the brush 51 is pressed against the commutator 26 by the elastic force of the elastic component 52. Therefore, the brush 51 can be stably contacted with the commutator 26.

[0049] The connecting wire 53 is conductive. One end of the connecting wire 53 is fixed to the extension portion 46 of the terminal portion 40. The other end of the connecting wire 53 enters the interior of the cylindrical portion 31 through the cutout portion 31a and is fixed to the brush 51. Thus, the connecting wire 53 electrically connects the terminal portion 40 and the brush 51. Therefore, the terminal portion 40 is electrically connected to the commutator 26 via the connecting wire 53 and the brush 51. In addition, an external power supply not shown and a plurality of coil portions 24 are electrically connected via the power cable 98, the terminal portion 40, the connecting wire 53, the brush 51 and the commutator 26. In addition, each brush unit 29 may not have the connecting wire 53. In this case, the terminal portion 40 and the brush 51 are electrically connected via the elastic member 52.

[0050] Fig. 9: is a flowchart showing the manufacturing method of the motor 10 of the present embodiment. The manufacturing method of the motor 10 includes a holding step Pr for holding the terminal portion 40 on the holding component 30. The holding step Pr includes: an insertion step S01 of passing the terminal body portion 41 through the holding hole 30a from the lower side, that is, the other axial side (-Z side), so that the protrusion 44 is located at a position higher than the holding hole 30a, that is, one axial side (+Z side); and a riveting step S02 of riveting the protrusion 44 radially inward, that is, one side (+Dt side) in the plate thickness direction Dt, so that the lower end of the protrusion 44 is axially opposite to the peripheral edge of the holding hole 30a. In the following description, "operators, etc." include operators and assembly equipment, etc. who perform operations of each process. The operations of each process may be performed only by the operator, only by the assembly equipment, or by the operator and the assembly equipment.

[0051] like Fig.10 As shown, in the insertion step S01, the protrusion 44 protrudes axially downward from the edge of the upper side of the hole 43a. The operator moves the terminal portion 40 upward and inserts the terminal body 41 from the lower side, that is, the other axial side (-Z side) into the holding hole 30a of the holding member 30 fixed by a clamp or the like (not shown). As a result, the terminal body 41 passes through the holding hole 30a from the lower side. Fig.11 As shown, the operator moves the terminal portion 40 upward until the extension portion 46 axially contacts the cylindrical portion 31 of the holding member 30, and the insertion step S01 is completed. At this time, the protrusion 44 is located above the holding hole 30a, that is, at one axial side (+Z side).

[0052] In the riveting step S02, the operator rivets the protrusion 44 radially inward, i.e., on one side (+Dt side) in the plate thickness direction Dt, using the riveting fixture 95. As described above, the recess 35c is open on both sides in the radial direction, i.e., in the plate thickness direction Dt. Therefore, the operator can rivet the protrusion 44 radially inward by moving the riveting fixture 95 from a position radially outward of the protrusion 44 to the radial inward inside the recess 35c. After the protrusion 44 is riveted radially inward, the riveting step S02 ends. At this time, as Figure 7 As shown, the lower end of the protrusion 44 is axially opposite to the peripheral portion of the retaining hole 30a. In addition, the protrusion 44 can also be riveted radially outward. In this case, the protrusion 44 is also axially opposite to the peripheral portion of the retaining hole 30a. After the riveting process S02 is completed, the retaining process Pr is completed.

[0053] According to the present embodiment, the terminal portion 40 has a plate-shaped terminal main body portion 41, which extends in the axial direction, and has a hole portion 43a that penetrates the terminal main body portion 41 in the plate thickness direction Dt, and the holding member 30 is provided with a holding hole 30a, which penetrates the holding member 30 in the axial direction and allows the terminal main body portion 41 to pass through. The terminal main body portion 41 has a protrusion 44, which extends from the upper side of the hole portion 43a, that is, the edge of one axial side (+Z side) to the lower side, that is, the other axial side (-Z side), and is arranged at a position above the holding hole 30a, and the protrusion 44 is riveted radially inward, that is, one side (+Dt side) in the plate thickness direction Dt, and protrudes radially inward, and the lower end of the protrusion 44 is opposite to the peripheral edge of the holding hole 30a in the axial direction. Therefore, in the insertion process S01, after the terminal main body 41 protruding axially downward from the edge of the upper side of the hole 43a passes through the holding hole 30a, the protruding portion 44 is rivet in the caulking process S02, thereby, the protruding portion 44 can be made to protrude in the radial direction. Therefore, compared with the case where the terminal main body 41 protruding radially inward from the edge of the upper side of the hole 43a passes through the holding hole 30a in the insertion process S01, the protruding portion 44 can be suppressed from contacting the inner side surface of the holding hole 30a. Thus, in the insertion process S01, the portion of the opposite surface 35d that is opposite to the lower end of the protruding portion 44 in the axial direction, that is, the edge of the holding hole 30a, can be suppressed from being damaged due to contact with the protruding portion 44. Therefore, when the terminal portion 40 moves downward relative to the holding member 30, the protruding portion 44 can be stably contacted with the opposite surface 35d in the axial direction. Thus, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with high accuracy.

[0054] When the cable terminal 98a of the power cable 98 is inserted from the upper side into the first main body 42 of the terminal part 40, the terminal part 40 tends to move downward because a force is applied to the terminal part 40 toward the lower side. In contrast, in the present embodiment, as described above, the lower end of the protrusion 44 is axially opposite to the peripheral edge of the holding hole 30a. Therefore, even if the terminal part 40 is to move downward, the protrusion 44 will contact the opposite surface 35d in the axial direction, so that the terminal part 40 can be suppressed from moving downward. Therefore, when the cable terminal 98a is inserted into the first main body 42, the terminal part 40 can be suppressed from detaching from the holding member 30.

[0055] According to the present embodiment, the protrusion 44 is riveted in the radial direction. Therefore, the plate surface of the terminal body 41 can be arranged to face the radial direction, and thus, the elastic member 52 can be easily supported in the radial direction by the terminal body 41. Thus, there is no need to add a separate component to support the elastic member 52 in the radial direction, and thus, the number of components of the motor 10 can be suppressed from increasing. Therefore, the manufacturing cost of the motor 10 can be suppressed from increasing.

[0056] The hole portion 43a and the protrusion 44 are formed by stamping the terminal body portion 41, respectively. On the surface of the protrusion 44 that faces downward, that is, the other axial side (-Z side), that is, the first outer surface 44a, a fracture surface 44b and a shear surface 44c are provided, and the fracture surface 44b is located radially inward, that is, on one side (+Dt side) of the plate thickness direction Dt than the shear surface 44c. Therefore, the burr 44d generated on the fracture surface 44b when the terminal body portion 41 is stamped protrudes radially inward from the first outer surface 44a as described above. As a result, the burr 44d is opposite to the opposite surface 35d in the axial direction, so when the cable terminal 98a is inserted into the first body portion 42, if the terminal portion 40 wants to move downward, the burr 44d will be stuck on the opposite surface 35d. As a result, the terminal portion 40 can be more appropriately suppressed from moving downward. Therefore, when the cable terminal 98 a is inserted into the first body portion 42 , it is possible to more appropriately suppress the terminal portion 40 from being detached from the holding member 30 .

[0057] According to the present embodiment, the protrusion 44 has a front end portion 44g, which is the lower side of the protrusion 44, that is, the end portion on the other side (-Z side) in the axial direction, and is the radially inner side, that is, the end portion on one side (+Dt side) in the plate thickness direction Dt, and the ratio of the distance L1 in the plate thickness direction Dt between the front end portion 44g and the terminal body portion 41 to the thickness Tp of the protrusion 44 is 50% or less. When the protrusion 44 protrudes too much inward in the radial direction, the second outer surface 44h, which is the surface facing the radial outer side of the outer surface of the protrusion 44, is opposite to the opposite surface 35d in the axial direction. In this case, when a force is applied to the terminal portion 40 toward the lower side, the second outer surface 44h and the opposite surface 35d are in contact in the axial direction, so that the protrusion 44 may be buckled inward in the radial direction. In contrast, in the present embodiment, since the amount of radial inward protrusion of the protrusion 44 can be suppressed from becoming excessive, the downwardly facing surface of the protrusion 44, i.e., the first outer surface 44a, can be stably opposed to the opposing surface 35d in the axial direction. Thus, when a downward force is applied to the terminal portion 40, the first outer surface 44a and the opposing surface 35d can be stably in contact in the axial direction, thereby suppressing the protrusion 44 from buckling. Therefore, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with higher accuracy.

[0058] According to the present embodiment, the protrusion 44 has a front end portion 44g, which is the end portion of the lower side of the protrusion 44 and the radially inner end portion, and the length Lp of the protrusion 44, that is, the distance between the portion of the protrusion 44 connected to the edge of the hole portion 43a and the front end portion 44g is 150% or more and 250% or less relative to the thickness Tp of the protrusion 44. If the length Lp of the protrusion 44 is too short, the moment of force applied by the caulking fixture 95 to the protrusion 44 in the caulking process S02 becomes too small, and therefore, it is difficult to caulking the protrusion 44. In addition, if the length Lp of the protrusion 44 is too long, when the force toward the lower side is applied to the terminal portion 40, the moment of the reaction force applied to the protrusion 44 from the retaining member 30 becomes too large, and therefore, the protrusion 44 is easily buckled. In contrast, in the present embodiment, it is possible to suppress both the length Lp of the protrusion 44 from becoming too short and becoming too long. Therefore, in the caulking step S02, the protrusion 44 can be easily caulked, and even if a force is applied downward to the terminal portion 40, the protrusion 44 can be prevented from being buckled. Therefore, the increase in manufacturing man-hours for the motor 10 can be suppressed, and the axial position of the terminal portion 40 relative to the retaining member 30 can be determined with further high accuracy.

[0059] According to the present embodiment, the ratio of the width Wp of the protrusion 44, that is, the dimension of the protrusion 44 in the width direction Dw to the thickness Tp of the protrusion 44 is 150% or more and 250% or less. If the width Wp of the protrusion 44 is too narrow, the strength of the portion of the protrusion 44 connected to the edge of the hole 43a becomes too small, so when a force toward the lower side is applied to the terminal 40, the protrusion 44 is easily buckled by the reaction force applied to the protrusion 44 from the retaining member 30. In addition, if the width Wp of the protrusion 44 is too wide, the strength of the portion of the protrusion 44 connected to the edge of the hole 43a becomes too large, so it is difficult to rivet the protrusion 44 in the riveting step S02. In contrast, in the present embodiment, the width Wp of the protrusion 44 can be suppressed from becoming too narrow, so even if a force toward the lower side is applied to the terminal 40, the buckling of the protrusion 44 can be more appropriately suppressed. In addition, in the present embodiment, the width Wp of the protrusion 44 can be prevented from becoming too wide, so that the protrusion 44 can be more easily caulked in the caulking step S02. Therefore, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with higher accuracy, and the increase in the manufacturing man-hours of the motor 10 can be more appropriately suppressed.

[0060] According to the present embodiment, the retaining member 30 has a recess 35c, which is recessed from the surface of the retaining member 30 facing upward, that is, one axial side (+Z side) toward the lower side, that is, the other axial side (-Z side), and is open on both sides of the plate thickness direction Dt, and the protrusion 44 is axially opposite to the opposite surface 35d facing upward in the inner side surface of the recess 35c, and the width Dw of the hole 43a, that is, the dimension of the width direction Dw of the hole 43a, is greater than the width Wc of the recess 35c, that is, the dimension of the width direction Dw of the recess. Therefore, it is easy to increase the dimension of the width direction Dw of the second main body 43, and therefore, it is easy to increase the contact area between the second main body 43 and the retaining member 30. Therefore, in the riveting process S02, when the protrusion 44 is riveted radially inward, the second main body 43 can be stably supported in the radial direction by the retaining member 30. Therefore, in the caulking step S02 , the protruding portion 44 can be caulked more easily, and therefore, an increase in the number of man-hours required for the caulking step S02 can be suppressed.

[0061] According to the present embodiment, the terminal portion 40 has an extension portion 46, which extends from the lower side of the terminal body portion 41, that is, the end portion on the other axial side (-Z side) in the radial direction, that is, the plate thickness direction Dt, and the surface of the extension portion 46 facing the upper side, that is, the surface on the one axial side (+Z side) faces the holding member 30. Therefore, when the terminal portion 40 is to move upward relative to the holding member 30, the extension portion 46 will contact the holding member 30 in the axial direction. Therefore, it is possible to suppress the terminal portion 40 from moving upward relative to the holding member 30, and thus the axial position of the terminal portion 40 relative to the holding member 30 can be more appropriately determined.

[0062] According to the present embodiment, the manufacturing method of the motor 10 includes a holding step Pr of making the holding member 30 hold the terminal portion 40, and the holding step Pr includes: an insertion step S01, making the terminal body 41 pass through the holding hole 30a that axially penetrates the holding member 30 from the lower side, that is, the other axial side (-Z side), so that the protrusion 44 is located at the upper side of the holding hole 30a, that is, the one axial side (+Z side); and a caulking step S02, caulking the protrusion 44 radially inward, that is, one side (+Dt side) in the plate thickness direction Dt, so that the lower end of the protrusion 44 is opposite to the peripheral edge of the holding hole 30a in the axial direction. Therefore, as described above, in the insertion step S01, the terminal body 41 that protrudes 44 from the upper edge of the hole 43a in the axial direction to the lower side can be passed through the holding hole 30a. Therefore, as described above, in the insertion step S01, when the protrusion 44 passes through the holding hole 30a, the protrusion 44 can be prevented from contacting the inner side surface of the holding hole 30a. Therefore, it is possible to prevent the edge of the holding hole 30a in the opposing surface 35d from being damaged due to contact with the protrusion 44. Therefore, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with higher accuracy.

[0063] In addition, in the present embodiment, in the insertion step S01, the friction force between the protrusion 44 and the inner side surface of the holding hole 30a can be suppressed from increasing, so when the terminal body 41 is passed through the holding hole 30a, the force applied to the terminal portion 40 can be suppressed from increasing. As a result, the terminal body 41 can be passed through the holding hole 30a more easily, so the increase in the working hours of the insertion step S01 can be suppressed.

[0064] In addition, in the present embodiment, in the caulking step S02, the protrusion 44 protruding from the edge of the hole 43a is caulked by the caulking jig 95. Therefore, compared with the case where the protrusion protruding radially inward is formed by caulking the plate-shaped terminal main body 41, the force applied to the terminal main body 41 can be reduced when the terminal main body 41 is caulked. Therefore, it is easy to simplify the structure of the caulking jig 95, and thus it is possible to suppress the increase in the manufacturing cost of the motor 10.

[0065] An embodiment of the present invention has been described above, but the various structures and combinations thereof in the embodiment are examples, and addition, omission, substitution and other changes of structures may be made without departing from the spirit of the present invention. In addition, the present invention is not limited to the embodiment.

[0066] The motor may be, for example, a brushless motor. In this case, when the cable terminal is inserted into the first main body, it is also possible to suppress the terminal portion from being separated from the holding member.

[0067] The shape of the retaining member is not limited to the present embodiment. For example, a recess may be provided on the retaining member. In this case, the retaining hole is a hole that penetrates the cylindrical portion and the retaining wall portion in the axial direction, and the opposing surface is a surface facing upward on the outer surface of the retaining wall portion. In addition, the protrusion is located at a position higher than the retaining member. In this structure, the lower end of the protrusion is also opposite to the peripheral portion of the retaining hole in the axial direction, so that when the cable terminal is inserted into the first main body, it is possible to prevent the terminal portion from being separated from the retaining member.

[0068] Note that the present technology can adopt the following configurations. (1) A motor comprises: a terminal portion, which is electrically connected to a commutator fixed to a rotor that can rotate around a central axis, and a retaining member that retains the terminal portion, the terminal portion having a plate-shaped terminal body portion extending in an axial direction, the terminal body portion having a hole portion, the hole portion penetrating the terminal body portion in a plate thickness direction of the terminal body portion, the retaining member being provided with a retaining hole, the retaining hole penetrating the retaining member in the axial direction and allowing the terminal body portion to pass therethrough, the terminal body portion having a protrusion portion extending from an edge portion on one axial side of the hole portion to the other axial side and being arranged at a position closer to one axial side than the retaining hole, the protrusion portion being riveted toward one side in the plate thickness direction so as to protrude toward one side in the plate thickness direction, and the end portion on the other axial side of the protrusion being axially opposite to the peripheral edge portion of the retaining hole. (2) The motor according to (1), wherein the protrusion is caulked in a radial direction. (3) A motor according to (1) or (2), wherein the hole portion and the protrusion are respectively provided by stamping the terminal main body portion, and a fracture surface and a shear surface are provided on the surface of the protrusion facing the other axial side, and the fracture surface is located closer to one side of the plate thickness direction than the shear surface. (4) A motor according to any one of (1) to (3), wherein the protrusion has a front end portion, the front end portion is the end portion on the other axial side of the protrusion and is the end portion on one side in the plate thickness direction, and the ratio of the distance between the front end portion and the terminal main body portion in the plate thickness direction to the thickness of the protrusion is less than 50%. (5) A motor according to any one of (1) to (4), wherein the protrusion has a front end portion, the front end portion is the end portion on the other axial side of the protrusion, and the ratio of the distance between the portion of the protrusion connected to the edge of the hole portion and the front end portion to the thickness of the protrusion is greater than 150% and less than 250%. (6) The motor according to any one of (1) to (5), wherein a ratio of a dimension of the protrusion in a width direction perpendicular to both the plate thickness direction and the axial direction to a thickness of the protrusion is greater than or equal to 150% and less than or equal to 250%. (7) A motor according to any one of (1) to (6), wherein the retaining member has a recessed portion which is recessed from a surface of the retaining member facing one axial side toward the other axial side and is open on both sides in the plate thickness direction, the protrusion and the opposing surface of the inner side surface of the recess facing one axial side are axially opposite, and the dimension of the hole portion in a width direction orthogonal to both the plate thickness direction and the axial direction is larger than the dimension of the recess in the width direction. (8) A motor according to any one of (1) to (7), wherein the terminal portion has an extension portion that extends from an end portion on the other axial side of the terminal main body portion along the plate thickness direction, and a surface of the extension portion facing one axial side is opposite to the retaining member. (9) A method for manufacturing a motor, the motor comprising: a terminal portion, the terminal portion being electrically connected to a commutator fixed to a rotor capable of rotating around a motor axis; and a retaining member, the retaining member retaining the terminal portion, the manufacturing method comprising a retaining step of retaining the terminal portion on the retaining member, the terminal portion having a plate-shaped terminal body portion extending in an axial direction, the terminal body portion having: a hole portion, the hole portion penetrating the terminal body portion in a plate thickness direction of the terminal body portion; and a protrusion portion, the protrusion portion protruding from an edge portion on one axial side of the hole portion to the other axial side thereof, the retaining step comprising: an insertion step of passing the terminal body portion through a retaining hole penetrating the retaining member in an axial direction from the other axial side thereof, so that the protrusion portion is located at a position closer to one axial side than the retaining hole; and a riveting step of riveting the protrusion to one side in the plate thickness direction so that the end portion on the other axial side of the protrusion is axially opposite to the peripheral edge portion of the retaining hole. Explanation of symbols

[0069] 10…motor, 20…rotor, 26…commutator, 30…holding component, 30a…holding hole, 35c…recess, 35d…opposing surface, 40…terminal portion, 41…terminal body portion, 43a…hole portion, 44…protrusion, 44b…fracture surface; 44c…shear surface; 44g…front end portion; 46…extension portion; J…center axis, Pr…holding process, S01…insertion process, S02…riveting process.

Claims

1. A motor, characterized in that: have: a terminal portion electrically connected to a commutator fixed to a rotor rotatable about a central axis; and a holding member that holds the terminal portion, The terminal portion has a plate-shaped terminal main body portion extending in the axial direction. The terminal body has a hole that penetrates the terminal body in a plate thickness direction of the terminal body. The holding component is provided with a holding hole, which penetrates the holding component in the axial direction and allows the terminal main body to pass through. The terminal body has a protrusion, which extends from an edge of one axial side of the hole to the other axial side and is arranged at a position closer to one axial side than the holding hole, and the protrusion is riveted toward one side in the plate thickness direction and protrudes toward one side in the plate thickness direction. An end portion of the protrusion on the other axial side is opposed to a peripheral edge portion of the holding hole in the axial direction.

2. The motor according to claim 1, characterized in that The projection is riveted in the radial direction.

3. The motor according to claim 1 or 2, characterized in that: The hole and the protrusion are respectively provided by punching the terminal body. A fracture surface and a shear surface are provided on the surface of the protrusion facing the other axial side. The fracture surface is located on one side in the plate thickness direction relative to the shear surface.

4. The motor according to claim 1 or 2, characterized in that: The protrusion has a front end portion, The front end portion is the end portion on the other axial side of the protruding portion and is the end portion on one side in the plate thickness direction. A ratio of a distance between the front end portion and the terminal main body portion in the plate thickness direction to a thickness of the protruding portion is 50% or less.

5. The motor according to claim 1 or 2, characterized in that: The protrusion has a front end portion, The front end portion is an end portion on the other axial side of the protruding portion and an end portion on one side in the plate thickness direction. A ratio of a distance between a portion of the protrusion connected to an edge of the hole and the front end portion to a thickness of the protrusion is 150% or more and 250% or less.

6. The motor according to claim 1 or 2, characterized in that: A ratio of a dimension of the protruding portion in a width direction perpendicular to both the plate thickness direction and the axial direction to a thickness of the protruding portion is 150% or more and 250% or less.

7. The motor according to claim 1 or 2, characterized in that: The holding member has a recessed portion that is recessed from a surface of the holding member that faces one axial side toward the other axial side and is open on both sides in the plate thickness direction. The protrusion and the opposing surface of the inner side surface of the recess facing one axial direction are axially opposed to each other, A dimension of the hole portion in a width direction orthogonal to both the plate thickness direction and the axial direction is larger than a dimension of the recessed portion in the width direction.

8. The motor according to claim 1 or 2, characterized in that: The terminal portion has an extension portion extending from the other axial end of the terminal body portion in the plate thickness direction. A surface of the extending portion facing one axial side faces the holding member.

9. A method for manufacturing a motor, the motor comprising: a terminal portion electrically connected to a commutator fixed to a rotor rotatable about a motor axis; and a holding member holding the terminal portion, wherein: The method comprises a step of holding the terminal portion on the holding member, The terminal portion has a plate-shaped terminal main body portion extending in the axial direction. The terminal body has: a hole portion, the hole portion penetrating the terminal main body portion in a plate thickness direction of the terminal main body portion; as well as a protrusion that protrudes from an edge portion of the hole portion on one axial side toward the other axial side, The maintaining process comprises: An inserting step of passing the terminal body through a holding hole that penetrates the holding member in the axial direction from the other axial side, so that the protrusion is located at a position closer to one axial side than the holding hole; as well as The caulking step caulks the protruding portion toward one side in the plate thickness direction so that the end portion of the protruding portion on the other axial side faces the peripheral edge portion of the holding hole in the axial direction.

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