Motor and manufacturing method of motor

Abstract

To provide a motor capable of determining a position of a shaft direction of a terminal part to a holding member with high accuracy, and a manufacturing method of the motor.SOLUTION: A motor 10 comprises: a terminal part 40 that is electrically connected to a commutator 26 to be fixed to a rotor 20 that is rotatable as a center of a center shaft; and a holding member 30 that holds the terminal part. The terminal part includes a plate-like terminal main body part 41 that is extended to the shaft direction. The terminal main body part includes a hole part which is penetrated by the terminal main body part to a plate thickness direction of the terminal main body part. In the holding member, a holding hole 30a is provided that is penetrated by the holding member to the shaft direction, and which is penetrated by the terminal main body part. The terminal main body part is extended to the other side of the shaft direction from an edge part on one side of the shaft direction of the hole part, is arranged to one side of the shaft direction from the holding hole, and is fastened to the one side of the plate thickness direction, and includes a projection part 44 to be projected to the one side of the plate thickness direction. An end part on the other side of the shaft direction of the projection part is opposite to a peripheral edge part of the holding hole and the shaft direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a motor and a method for manufacturing a motor. [Background technology]

[0002] A motor is known in which barbs are provided on the motor terminals that electrically connect the external terminals and the commutator, and the barbs are inserted into the inner walls of terminal holes provided in the end caps, thereby preventing the motor terminals from moving when the external terminals are attached to the motor terminals (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-163096 Summary of the Invention [Problem to be solved by the invention]

[0004] In the motor described above, when the motor terminal is passed through the inside of the terminal hole during the manufacturing process, the inner wall of the terminal hole may be chipped by the thorns. In this case, the thorns have difficulty in biting into the inner wall of the terminal hole, and there is a risk that the position of the motor terminal relative to the end cap cannot be determined accurately.

[0005] In view of the above circumstances, one aspect of the present invention has an object to provide a motor and a method for manufacturing the motor in which the axial position of a terminal portion relative to a holding member can be determined with high accuracy. [Means for solving the problem]

[0006] One aspect of the motor 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 for holding the terminal portion. The terminal portion has a plate-shaped terminal main body portion extending in the axial direction. The terminal main body portion has a hole portion penetrating the terminal main body portion in the plate thickness direction of the terminal main body portion. The holding member is provided with a holding hole penetrating the holding member in the axial direction and through which the terminal main body portion is passed. The terminal main body portion has a protrusion portion extending from an edge portion on one axial side of the hole portion to the other axial direction, disposed on one axial side of the holding hole, and crimped to one side in the plate thickness direction and protruding to one side in the plate thickness direction. An end portion on the other axial direction side of the protrusion portion faces a peripheral portion of the holding hole in the axial direction.

[0007] One aspect of the method for manufacturing a motor of the present invention is a method for manufacturing a motor including terminals electrically connected to a commutator fixed to a rotor rotatable about a motor axis and a holding member for holding the terminals, the method including a holding step of holding the terminals in the holding member. The terminals have a plate-shaped terminal main body extending in the axial direction. The terminal main body has a hole penetrating the terminal main body in a plate thickness direction of the terminal main body and a protrusion protruding from an edge of one axial side of the hole to the other axial side. The holding step includes an insertion step of inserting the terminal main body from the other axial side into a holding hole penetrating the holding member in the axial direction to position the protrusion on the one axial side of the holding hole, and a crimping step of crimping the protrusion to one side in the plate thickness direction to axially face an edge of the holding hole. Effect of the Invention

[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 precision. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a motor according to an embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing the motor of the embodiment. [Diagram 3] FIG. 3 is a perspective view showing a holding member and a terminal portion according to one embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a holding member and a terminal portion according to one embodiment. [Diagram 5] FIG. 5 is a perspective view showing a terminal portion of one embodiment. [Figure 6] FIG. 6 is an enlarged view showing a holding member and a terminal portion according to one embodiment. [Figure 7] FIG. 7 is an enlarged cross-sectional view showing a holding member and a terminal portion according to one embodiment. [Figure 8] FIG. 8 is an enlarged cross-sectional view showing a portion of a protrusion according to one embodiment. [Figure 9] FIG. 9 is a flowchart showing a method for manufacturing a motor according to one embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing an inserting step in the manufacturing method of the motor according to the embodiment. [Figure 11] FIG. 11 is a cross-sectional view showing a crimping step in a manufacturing method for a motor according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a motor and a method for manufacturing a motor according to an embodiment of the present invention will be described with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiments, and can be modified as desired within the scope of the technical concept of the present invention. In addition, in the following drawings, the scale and number of each structure may differ from the actual structure in order to make each configuration easier to understand.

[0011] In the following description, the Z axis is appropriately indicated in each figure. In this embodiment, the Z axis direction is the direction in which the central axis J of the motor extends. The central axis J appropriately indicated in each figure is a virtual axis. In the following description, the direction parallel to the Z axis direction is called the "axial direction". The radial direction centered on the central axis J is simply called the "radial direction". The circumferential direction centered on the central axis J is simply called the "circumferential direction". The circumferential direction is indicated by an arrow θ in each figure. The side of the axial direction toward which the arrow of the Z axis points (+Z side) is called the "one axial side" or "upper side". The side of the axial direction opposite to the side toward which the arrow of the Z axis points (-Z side) is called the "other axial side" or "lower side". The upper side and the lower side are names simply for describing the relative positional relationship of each part, and the actual positional relationship may be a positional relationship other than the positional relationship indicated by these names.

[0012] In the following description, each figure appropriately shows the plate thickness direction Dt. The plate thickness direction Dt is the plate thickness direction of the terminal body part. The plate thickness direction Dt is a direction intersecting the axial direction. In this embodiment, the plate thickness direction Dt is a direction perpendicular to the axial direction. In this embodiment, the plate thickness direction Dt is a direction parallel to the radial direction. The plate thickness direction Dt does not have to be a direction parallel to the radial direction. In the following description, the side to which the arrow of the plate thickness direction Dt points (+Dt side) is called "one side of the plate thickness direction Dt". In this embodiment, "one side of the plate thickness direction Dt" is the radial inner side. "The side opposite to the side to which the arrow of the plate thickness direction Dt points (-Dt side) is called "the other side of the plate thickness direction Dt". In this embodiment, "the other side of the plate thickness direction Dt" is the radial outer side. Note that "one side of the plate thickness direction Dt" may be the radial outer side, and in this case, "the other side of the plate thickness direction Dt" is the radial inner side.

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

[0014] As shown in Fig. 1, the motor 10 of this embodiment has a generally cylindrical shape extending in the axial direction. In this embodiment, the motor 10 is a brush motor. The motor 10 is a DC brush motor. As shown in Fig. 2, the motor 10 includes a case 12, a rotor 20, a commutator 26, a magnet 28, and a brush unit 29.

[0015] As shown in Fig. 1, the case 12 is generally cylindrical and extends in the axial direction about a central axis J. As shown in Fig. 2, the case 12 accommodates therein each of the components that constitute the motor 10, such as the rotor 20, the commutator 26, the magnet 28, and the brush unit 29. The case 12 has a case main body 13 and a lid 17. The case main body 13 is cylindrical and extends in the axial direction about the central axis J. The case main body 13 opens to the upper side. The case main body 13 has a peripheral wall 14.

[0016] The peripheral wall portion 14 is cylindrical and extends in the axial direction about the central axis J. The peripheral wall portion 14 radially surrounds the components that configure the motor 10, such as the rotor 20, the commutator 26, and the magnets 28. The upper end of the peripheral wall portion 14 is the upper end of the case main body portion 13. The peripheral wall portion 14 has an opening that opens upward. The peripheral wall portion 14 is provided with a peripheral wall cutout portion 14c.

[0017] As shown in FIG. 1, the peripheral wall cutout 14c is a cutout extending downward from the upper end of the peripheral wall portion 14. The peripheral wall cutout 14c penetrates the peripheral wall portion 14 in the radial direction. When viewed from the radial direction, the peripheral wall cutout 14c has a substantially rectangular shape with its long side extending in the axial direction. As shown in FIG. 2, in this 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 central axis J in between.

[0018] The lid portion 17 is fixed to the upper end of the case main body 13. The lid portion 17 closes the opening of the peripheral wall portion 14 from above. As shown in FIG. 1, the lid portion 17 has a lid main body portion 17a and a first bearing holder 17d. The lid main body portion 17a is in the shape of a substantially annular plate centered on the central axis J. The plate surface of the lid main body portion 17a faces the axial direction. The lid main body portion 17a is fixed to the upper end of the peripheral wall portion 14. The lid main body portion 17a is provided with a lid cutout portion 17b.

[0019] The lid notch 17b is a notch extending radially inward from the radially outer end of the lid main body 17a. The lid notch 17b penetrates the lid main body 17a in the axial direction. When viewed in the axial direction, the lid notch 17b is substantially rectangular with its long side extending radially. In this embodiment, two lid notches 17b are provided in the peripheral wall 14. The lid notches 17b are provided at positions facing each other in the radial direction across the central axis J. The radial outer edges of the lid notches 17b are connected to different peripheral wall notches 14c. As a result, the case 12 is provided with a case notch 12a composed of one peripheral wall notch 14c and one lid notch 17b. The case 12 is provided with two case notches 12a.

[0020] 2, the first bearing retaining portion 17d protrudes upward from the radial inner edge of the lid main body portion 17a. The first bearing retaining portion 17d has a cylindrical shape centered on the central axis J. The first bearing 91 is retained on the inner circumferential surface of the first bearing retaining portion 17d.

[0021] The rotor 20 is rotatable about the central axis J. The rotor 20 has a shaft 21, an armature 22, and a commutator holding portion 25. The shaft 21 is cylindrical and extends in the axial direction about the central axis J. An upper end of the shaft 21 is supported by a first bearing 91 so as to be rotatable about the central axis J. A lower portion of the shaft 21 is supported by a second bearing 92 so as to be rotatable about the central axis J. This allows the shaft 21 to rotate about the central axis J. A lower end of the shaft 21 protrudes outside the case 12. A driven part (not shown) is connected to the lower end of the shaft 21. The rotation of the shaft 21 is transmitted to the driven part.

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

[0023] The core 23 has an annular shape extending in the axial direction about the central axis J. In this embodiment, the core 23 is formed by stacking a plurality of electromagnetic steel plates in the axial direction. The shaft 21 passes through the inside of the core 23 in the axial direction. The inner peripheral surface of the core 23 is fixed to the outer surface of the shaft 21. This fixes the armature 22 to the shaft 21. The core 23 has a substantially annular core back portion (not shown) and a plurality of teeth portions (not shown) extending radially inward from the core back portion. In this embodiment, the core 23 has, for example, seven teeth portions.

[0024] Each of the multiple coil portions 24 is attached to the core 23. In this embodiment, the armature 22 has seven coil portions 24. Each coil portion 24 has a coil main body portion 24a and a coil lead wire 24b. Each coil main body portion 24a is attached to a different tooth portion. Each coil main body portion 24a is arranged along the circumferential direction. Each coil lead wire 24b is drawn out upward from the coil main body portion 24a.

[0025] The commutator holding portion 25 has a generally cylindrical shape extending in the axial direction about 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 disposed above the core 23.

[0026] The commutator 26 is in the form of a plate extending in the axial direction. The plate surface of the commutator 26 faces the radial direction. The commutator 26 is conductive. Although not shown, in this embodiment, the motor 10 has seven commutators 26. When viewed from the axial direction, each commutator 26 is in the form of an arc. Each commutator 26 is fixed to the outer circumferential surface of the commutator holding portion 25. As a result, 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 disposed at intervals along the circumferential direction. A coil connection portion 26a is provided at the lower end of each commutator 26. A different coil lead wire 24b is connected to each coil connection portion 26a. As a result, each commutator 26 is connected to a different coil portion 24.

[0027] Each of the magnets 28 extends in the axial direction. When viewed in the axial direction, the magnets 28 are in the shape of an arc centered on the central axis J. In this embodiment, the motor 10 has two magnets 28. Each of the magnets 28 is disposed radially outward from the core 23. Each of the magnets 28 faces the core 23 with a radial gap therebetween. Each of the magnets 28 is fixed to the inner circumferential surface of the peripheral wall portion 14. Each of the magnets 28 is disposed with a gap therebetween in the circumferential direction.

[0028] The brush unit 29 electrically connects the power cable 98 connected to an external power source (not shown) and the commutator 26. As described above, the commutator 26 is connected to the coil portion 24. This electrically connects the external power source and the coil portion 24. When a 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 due to the magnetic force between the armature 22 and the magnet 28. As shown in FIG. 1, in this embodiment, the motor 10 has two brush units 29. A part of each brush unit 29 is exposed to the outside of the case 12 through the case cutout portion 12a. As shown in FIG. 2, the brush units 29 are arranged radially opposite each other across the central axis J. Each brush unit 29 has a holding member 30, a terminal portion 40, a brush 51, an elastic member 52, and a connection line 53. That is, the motor 10 includes a holding member 30 and a terminal portion 40.

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

[0030] As shown in FIG. 3, the cylindrical portion 31 is a substantially rectangular cylindrical shape extending in the radial direction. The cylindrical portion 31 opens on both radial sides. The radially inner end of the cylindrical portion 31 is the radially inner end of the holding member 30. As shown in FIG. 2, the cylindrical portion 31 faces the commutator 26 in the radial direction. As shown in FIG. 3, the cylindrical portion 31 is provided with a notch 31a. The notch 31a is a notch extending from the radially inner end of the cylindrical portion 31 to the radially outer side. The notch 31a penetrates the wall portion of the cylindrical portion 31 that is disposed on one side (+Dw side) in the width direction Dw in the width direction Dw. The inside of the cylindrical portion 31 is connected to the outside of the cylindrical portion 31 via the notch 31a.

[0031] As shown in FIG. 3, the holding wall portion 35 is connected to the cylindrical portion 31. The holding wall portion 35 has a connection portion 35a, an upper wall portion 35b, and a side wall portion 35k. The connection portion 35a is plate-shaped and extends in a direction perpendicular to the axial direction. When viewed from the axial direction, the connection portion 35a is substantially rectangular with its long side extending in the radial direction. The connection portion 35a is disposed above the cylindrical portion 31. The connection 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 has a generally rectangular prism shape extending in the radial direction. When viewed in the radial direction, the upper wall portion 35b has a generally rectangular shape with its long sides extending in the width direction Dw. As shown in FIG. 4, the radially outer end of the upper wall portion 35b is located radially outer than the cylindrical portion 31. As shown in FIG. 3, 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 facing the upper side of the upper wall portion 35b. The recess 35c is recessed downward from the surface facing the upper side of the holding member 30, i.e., one axial side (+Z side), i.e., the other axial side (-Z side). The recess 35c is provided in a central portion of the holding wall portion 35 in the width direction Dw. When viewed from the radial direction, the recess 35c is substantially rectangular with its long side extending in the axial direction. The recess 35c extends in the radial direction. In the axial direction, the lower end of the recess 35c is substantially at the same position as the upper end of the connecting portion 35a. As shown in FIG. 4, the recess 35c opens on both sides in the radial direction, i.e., in the plate thickness direction Dt. The upper side of the inner surface of the recess 35c, i.e., the surface facing one axial side, is the opposing surface 35d.

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

[0035] The first recess 35g is recessed from a surface of the upper wall portion 35b facing one side (+Dw side) in the width direction Dw to the other side (-Dw side) in the width direction Dw. The second recess 35h is recessed from a surface of the upper wall portion 35b facing the other side in the width direction Dw to one side in the width direction Dw. Each of the first recess 35g and the second recess 35h extends in the radial direction and opens on both sides in the radial direction. As shown in FIG. 1, the edge of the lid notch 17b is inserted into the first recess 35g and the second recess 35h. This determines the axial position and the circumferential position of each brush unit 29 relative to the case 12. Furthermore, the surface of the upper wall portion 35b facing the radially inward contacts the inner surface of the lid notch 17b in the radial direction. This makes it possible to suppress the movement of each brush unit 29 in the radially inward direction relative to the case 12. A portion of the upper wall portion 35b above the first recess 35g and the second recess 35h is located outside the case 12 via the lid cutout portion 17b.

[0036] As shown in FIG. 4, the side wall portion 35k is a plate extending in the axial direction. The plate surface of the side wall portion 35k faces in 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 disposed radially outward from the cylindrical portion 31. The side wall portion 35k is radially connected to the cylindrical portion 31. The lower end of the side wall portion 35k is located below the cylindrical portion 31. As shown in FIG. 1, the surface of the side wall portion 35k facing radially outward is exposed to the outside of the case 12 through the peripheral wall cutout portion 14c.

[0037] As shown in FIG. 4, the retaining hole 30a is a hole that penetrates the retaining member 30 in the axial direction. More specifically, the retaining hole 30a is a hole that penetrates the cylindrical portion 31 and the connecting portion 35a in the axial direction. Although not shown, when viewed from the axial direction, the retaining hole 30a has a substantially rectangular shape with its long side extending in the width direction Dw. The surface facing the radially outward of the retaining hole 30a is formed by the surfaces facing the radially outward of the cylindrical portion 31 and the connecting portion 35a. The surface facing the radially inward of the retaining hole 30a is the surface facing the radially inward of the side wall portion 35k. In the axial direction, the position of the upper end of the retaining hole 30a is the same position as the position of the opposing surface 35d. The upper end of the surface facing the radial direction of the inner surface of the retaining hole 30a is connected to the opposing surface 35d. The inside of the retaining hole 30a is connected to the inside of the recess 35c and the inside of the upper wall hole portion 35e.

[0038] 5, the terminal portion 40 has a substantially L-shaped plate shape when viewed in the width direction Dw. In this embodiment, the terminal portion 40 is made of metal. The terminal portion 40 is conductive. The terminal portion 40 has a terminal main body portion 41 and an extension portion 46.

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

[0040] The first body portion 42 is an upper portion of the terminal body portion 41. The upper end of the first body portion 42 is the upper end of the terminal body portion 41. When viewed from the radial direction, the first body portion 42 is substantially rectangular with a long side extending in the axial direction. The first body portion 42 is provided with a through hole 42a. The through hole 42a is a circular hole that penetrates the first body portion 42 in the radial direction. As shown in FIG. 3, the first body portion 42 is located above the holding member 30. As shown in FIG. 1, the first body portion 42 is disposed outside the case 12. A cable terminal 98a of a power cable 98 is inserted from above into the first body portion 42. This connects the terminal portion 40 and the power cable 98. Thus, the terminal portion 40 and an external power source (not shown) are electrically connected via the power cable 98.

[0041] As shown in FIG. 5, the second body portion 43 protrudes downward from the first body portion 42. When viewed from the radial direction, the second body portion 43 is substantially rectangular. As shown in FIG. 4, an upper portion of the second body portion 43 is passed axially through the upper wall hole portion 35e. Also, a lower portion of the second body portion 43 is passed axially through the holding hole 30a. This determines the position of the terminal portion 40 in the radial direction and the width direction Dw relative to the holding member 30. As shown in FIG. 5, the second body portion 43 is provided with a hole portion 43a. That is, the terminal body portion 41 has the hole portion 43a.

[0042] The hole portion 43a is a hole penetrating the second body portion 43 in the radial direction. The hole portion 43a is a hole penetrating the terminal 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 on one side (+Dw side) of the width direction Dw from the protrusion portion 44. The second hole portion 43d is a portion of the hole portion 43a that is on the other side (-Dw side) of the width direction Dw from the protrusion portion 44. Each of the first hole portion 43c and the second hole portion 43d is a hole whose long side extends in the axial direction. 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 shown in FIG. 6, the width Wh of the hole 43a, which is the dimension of the hole 43a in the width direction Dw, is larger than the width Wc of the recess 35c, which is the dimension of the recess 35c in the width direction Dw.

[0043] As shown in FIG. 5, the protrusion 44 is a plate extending from the edge of the upper side of the hole 43a, i.e., one axial side (+Z side), downward, i.e., 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. As shown in FIG. 4, the protrusion 44 protrudes from the edge of the upper side of the hole 43a radially inward, i.e., one side (+Dt side) in the plate thickness direction Dt. In this embodiment, the protrusion 44 is crimped radially inward by a crimping jig 95 in a crimping step S02, which is a part of the manufacturing process of the motor 10 described later, and protrudes radially inward. That is, the protrusion 44 is crimped radially by the crimping jig 95. As shown in FIG. 7, the lower side of the protrusion 44, i.e., the end portion on the other axial side, faces the periphery of the retaining hole 30a in the axial direction. A lower end of the protrusion 44 faces the peripheral portion of the retaining hole 30a of the facing surface 35d in the axial direction. As a result, even if a downward force is applied to the terminal portion 40, the protrusion 44 comes into contact with the facing surface 35d, so that the terminal portion 40 can be prevented from moving downward. The protrusion 44 has a first outer surface 44a, a tip portion 44g, and a second outer surface 44h.

[0044] The first outer surface 44a is a surface facing downward among the outer surfaces of the protrusion 44. In this embodiment, the hole 43a and the protrusion 44 are each provided by pressing the terminal body 41. Therefore, as shown in FIG. 8, the first outer surface 44a has a fracture surface 44b and a shear surface 44c. In this embodiment, the hole 43a and the protrusion 44 are each provided by pressing the terminal body 41 from the radial outside toward the radial inside. Therefore, the fracture surface 44b is located radially inward from the shear surface 44c, that is, on one side (+Dt side) in the plate thickness direction Dt. The fracture surface 44b is provided on a radially inner portion of the first outer surface 44a. Therefore, a burr 44d generated on the fracture surface 44b protrudes radially inward from the first outer surface 44a. The burr 44d faces the opposing surface 35d in the axial direction. Alternatively, each of the hole 43a and the protrusion 44 may be provided by pressing the terminal body 41 from the radially inner side. In this case, the fracture surface 44b is located radially outward of the shear surface 44c.

[0045] As shown in FIG. 7, the tip 44g is an end portion on the lower side of the protrusion 44, i.e., the other axial side (-Z side) and the radial inside, i.e., one side (+Dt side) in the plate thickness direction Dt. In this embodiment, the ratio of the distance L1 in the plate thickness direction Dt between the tip 44g and the terminal body 41 to the thickness Tp of the protrusion 44 is 50% or less. In this embodiment, the ratio of the length Lp of the protrusion, which is the distance between the part of the protrusion 44 connected to the edge of the hole 43a and the tip 44g, to the thickness Tp of the protrusion 44 is 150% or more and 250% or less. Furthermore, the ratio of the width Wp of the protrusion 44, which is the dimension of the width direction Dw of the protrusion 44 shown in FIG. 6, to the thickness Tp of the protrusion 44 is 150% or more and 250% or less. As shown in FIG. 7, the second outer surface 44h is a surface of the outer surface of the protrusion 44 that faces radially outward.

[0046] As shown in Fig. 5, the third body portion 45 protrudes downward from the second body portion 43. When viewed in the radial direction, the third body portion 45 has a generally rectangular shape with its long sides extending in the axial direction. As shown in Fig. 4, the third body portion 45 passes through the retaining hole 30a in the axial direction. A part of the surface of the third body portion 45 facing radially inward is exposed inside the cylindrical portion 31. The lower end of the third body portion 45 is located below the cylindrical portion 31.

[0047] As shown in Fig. 5, the extension portion 46 extends radially, i.e., in the plate thickness direction Dt, from the end of the lower side of the terminal body 41, i.e., the other axial side (-Z side). In this embodiment, the extension portion 46 extends radially inward from the lower end of the terminal body 41. The extension portion 46 may extend radially outward from the lower side of the terminal body 41. As shown in Fig. 4, the upper side of the extension portion 46, i.e., the surface facing one axial side (+Z side), faces the holding member 30 in the axial direction. This makes it possible to suppress the terminal portion 40 from moving upward relative to the holding member 30.

[0048] The brush 51 shown in FIG. 2 contacts the commutator 26 and supplies a current to the commutator 26. In this embodiment, the brush 51 is a column extending in the radial direction. In this embodiment, the brush 51 is made of carbon. The brush 51 is conductive. The brush 51 may be made of metal. The brush 51 is housed inside the cylindrical portion 31. The elastic member 52 is elastically deformable in the radial direction. In this embodiment, the elastic member 52 is a coil spring. In this embodiment, the elastic member 52 is conductive. The elastic member 52 may not be conductive. A radially outer end of the elastic member 52 protrudes radially outward from the cylindrical portion 31 through the opening of the cylindrical portion 31 and is supported in the radial direction by the third main body portion 45 of the terminal portion 40. A radially inner end of the elastic member 52 is fixed to the brush 51. As a result, the brush 51 is pressed against the commutator 26 by the elastic force of the elastic member 52. Therefore, the brush 51 can be brought into stable contact with the commutator 26.

[0049] The connection wire 53 is conductive. One end of the connection wire 53 is fixed to the extension 46 of the terminal portion 40. The other end of the connection wire 53 is passed through the inside of the cylindrical portion 31 via the notch 31a and fixed to the brush 51. As a result, the connection 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 connection wire 53 and the brush 51. In addition, an external power source (not shown) and the multiple coil portions 24 are electrically connected via the power cable 98, the terminal portion 40, the connection wire 53, the brush 51, and the commutator 26. Note that each brush unit 29 may not have the connection 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 a method for manufacturing the motor 10 of this embodiment. The method for manufacturing the motor 10 includes a holding step Pr in which the terminal portion 40 is held by the holding member 30. The holding step Pr includes an insertion step S01 in which the terminal body portion 41 is inserted into the holding hole 30a from the lower side, i.e., from the other axial side (-Z side), and the protrusion 44 is positioned above the holding hole 30a, i.e., on one axial side (+Z side), and a crimping step S02 in which the protrusion 44 is crimped radially inward, i.e., on one side (+Dt side) in the plate thickness direction Dt, so that the lower end of the protrusion 44 faces the periphery of the holding hole 30a in the axial direction. In the following description, the term "workers, etc." includes workers who perform the work of each process and assembly devices, etc. The work of each process may be performed only by workers, only by assembly devices, or by workers and assembly devices.

[0051] As shown in FIG. 10, in the insertion step S01, the protrusion 44 protrudes downward from the upper edge of the hole 43a along the axial direction. The worker or the like moves the terminal 40 upward and inserts the terminal body 41 from the lower side, i.e., the other axial side (-Z side), into the holding hole 30a of the holding member 30 fixed to a jig or the like (not shown). As a result, the terminal body 41 is passed through the holding hole 30a from the lower side. As shown in FIG. 11, the worker or the like moves the terminal 40 upward until the extension 46 comes into contact with the tubular portion 31 of the holding member 30 in the axial direction, and the insertion step S01 is completed. At this time, the protrusion 44 is located above the holding hole 30a, i.e., on one axial side (+Z side).

[0052] In the crimping step S02, the worker or the like crimps the protruding portion 44 radially inward, that is, on one side (+Dt side) in the plate thickness direction Dt, using the crimping jig 95. As described above, the recess 35c opens in the radial direction, that is, on both sides in the plate thickness direction Dt. Therefore, the worker or the like can crimp the protruding portion 44 radially inward by moving the crimping jig 95 inside the recess 35c from the radially outer side to the radially inner side of the protruding portion 44. When the protruding portion 44 is crimped radially inward, the crimping step S02 is completed. At this time, as shown in FIG. 7, the lower end of the protruding portion 44 faces the circumferential portion of the holding hole 30a in the axial direction. Note that the protruding portion 44 may be crimped radially outward. Even in this case, the protruding portion 44 faces the circumferential portion of the holding hole 30a in the axial direction. When the crimping step S02 is completed, the holding step Pr is completed.

[0053] According to this embodiment, the terminal portion 40 has a plate-shaped terminal body portion 41 extending in the axial direction, the terminal body portion 41 has a hole portion 43a penetrating the terminal body portion 41 in the plate thickness direction Dt, and the holding member 30 is provided with a holding hole 30a penetrating the holding member 30 in the axial direction and through which the terminal body portion 41 is inserted. The terminal body portion 41 extends downward, i.e., from an edge portion on the upper side of the hole portion 43a, i.e., one axial side (+Z side), i.e., the other axial side (-Z side), and is disposed above the holding hole 30a, and is crimped radially inward, i.e., one side (+Dt side) in the plate thickness direction Dt, and has a protrusion portion 44 protruding radially inward, and a lower end portion of the protrusion portion 44 faces the periphery of the holding hole 30a in the axial direction. Therefore, in the insertion step S01, the terminal body 41 in which the protrusion 44 protrudes downward in the axial direction from the upper edge of the hole 43a is passed through the holding hole 30a, and then in the crimping step S02, the protrusion 44 is crimped to protrude in the radial direction. Therefore, compared to the case in which the terminal body 41 in which the protrusion 44 protrudes radially inward from the upper edge of the hole 43a is passed through the holding hole 30a in the insertion step S01, the protrusion 44 can be prevented from contacting the inner surface of the holding hole 30a. This makes it possible to prevent the edge of the holding hole 30a, which is a part of the opposing surface 35d that faces the lower end of the protrusion 44 in the axial direction, from being chipped due to contact with the protrusion 44 in the insertion step S01. Therefore, when the terminal 40 tries to move downward relative to the holding member 30, the protrusion 44 and the opposing surface 35d can be brought into stable contact with each other in the axial direction. This makes it possible to accurately determine the axial position of the terminal 40 relative to the holding member 30.

[0054] When the cable terminal 98a of the power cable 98 is inserted into the first main body 42 of the terminal portion 40 from above, a downward force is applied to the terminal portion 40, so that the terminal portion 40 tries to move downward. In contrast, in this embodiment, as described above, the lower end of the protrusion 44 faces the periphery of the holding hole 30a in the axial direction. Therefore, even if the terminal portion 40 tries to move downward, the protrusion 44 comes into contact with the opposing surface 35d in the axial direction, so that the terminal portion 40 can be prevented from moving downward. Therefore, when the cable terminal 98a is inserted into the first main body 42, the terminal portion 40 can be prevented from coming off the holding member 30.

[0055] According to this embodiment, the protrusion 44 is crimped in the radial direction. Therefore, the plate surface of the terminal main body 41 can be arranged facing the radial direction, so that the elastic member 52 can be easily supported in the radial direction by the terminal main body 41. This eliminates the need to provide an additional separate member for supporting the elastic member 52 in the radial direction, and therefore an increase in the number of parts of the motor 10 can be suppressed. Therefore, an increase in the manufacturing cost of the motor 10 can be suppressed.

[0056] The hole 43a and the protrusion 44 are provided by pressing the terminal body 41, and the first outer surface 44a, which is the lower side of the protrusion 44, i.e., the surface facing the other axial side (-Z side), is provided with a fracture surface 44b and a shear surface 44c, and the fracture surface 44b is located radially inward from the shear surface 44c, i.e., on one side (+Dt side) in the plate thickness direction Dt. Therefore, the burr 44d generated on the fracture surface 44b when the terminal body 41 is pressed protrudes radially inward from the first outer surface 44a as described above. As a result, the burr 44d faces the opposing surface 35d in the axial direction, so that when the terminal 40 tries to move downward when the cable terminal 98a is inserted into the first body 42, the burr 44d gets caught on the opposing surface 35d. This makes it possible to more suitably suppress the terminal 40 from moving downward. Therefore, when the cable terminal 98a is inserted into the first main body portion 42, the terminal portion 40 can be prevented from coming off the holding member 30 in a more suitable manner.

[0057] According to this embodiment, the protrusion 44 has a tip 44g, and the tip 44g is an end portion on the lower side of the protrusion 44, i.e., the other axial side (-Z side), and an end portion on the radial inner side, i.e., 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 tip 44g and the terminal body 41 to the thickness Tp of the protrusion 44 is 50% or less. If the protrusion amount toward the radial inner side of the protrusion 44 becomes too large, the second outer surface 44h, which is the surface of the outer surface of the protrusion 44 facing the radial outer side, and the opposing surface 35d face each other in the axial direction. In this case, when a force directed downward is applied to the terminal 40, the second outer surface 44h and the opposing surface 35d come into contact with each other in the axial direction, and therefore the protrusion 44 may buckle toward the radial inner side. In contrast, in the present embodiment, the amount of protrusion of the protrusion 44 in the radially inward direction can be prevented from becoming too large, so that the first outer surface 44a, which is the surface of the protrusion 44 facing downward, and the opposing surface 35d can be stably opposed in the axial direction. As a result, when a downward force is applied to the terminal portion 40, the first outer surface 44a and the opposing surface 35d come into stable contact in the axial direction, so that buckling of the protrusion 44 can be prevented. Therefore, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with greater precision.

[0058] According to this embodiment, the protrusion 44 has a tip 44g, which is a lower end of the protrusion 44 and an end on the inside in the radial direction, and the ratio of the length Lp of the protrusion 44 to the thickness Tp of the protrusion 44, i.e., the distance between the part of the protrusion 44 connected to the edge of the hole 43a and the tip 44g, is 150% or more and 250% or less. If the length Lp of the protrusion 44 is too short, the moment of the force applied to the protrusion 44 by the crimping jig 95 in the crimping step S02 becomes too small, making it difficult to crimp the protrusion 44. Also, if the length Lp of the protrusion 44 is too long, when a force directed downward is applied to the terminal portion 40, the moment of the reaction force applied from the holding member 30 to the protrusion 44 becomes too large, making the protrusion 44 prone to buckling. In contrast, in this embodiment, it is possible to prevent the length Lp of the protrusion 44 from becoming too short and too long. Therefore, in the crimping step S02, the protruding portion 44 can be easily crimped, and buckling of the protruding portion 44 can be prevented even if a downward force is applied to the terminal portion 40. Therefore, an increase in the number of manufacturing steps for the motor 10 can be prevented, and the axial position of the terminal portion 40 relative to the holding member 30 can be determined with higher accuracy.

[0059] According to this embodiment, the ratio of the width Wp of the protrusion 44 to the thickness Tp of the protrusion 44, that is, the dimension in the width direction Dw 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 that when a downward force is applied to the terminal portion 40, the protrusion 44 is likely to buckle due to the reaction force applied to the protrusion 44 from the holding member 30. Also, 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 that it becomes difficult to swage the protrusion 44 in the swage step S02. In contrast, in this embodiment, the width Wp of the protrusion 44 can be prevented from becoming too narrow, so that even if a downward force is applied to the terminal portion 40, the protrusion 44 can be more suitably prevented from buckling. Furthermore, in this embodiment, since the width Wp of the protrusion 44 can be prevented from becoming too wide, the protrusion 44 can be more easily crimped in the crimping step S02. Therefore, the axial position of the terminal portion 40 relative to the holding member 30 can be determined with higher accuracy, and an increase in the number of manufacturing steps for the motor 10 can be more suitably prevented.

[0060] According to this embodiment, the holding member 30 has a recess 35c recessed downward, i.e., from a surface facing one axial side (+Z side) of the upper side of the holding member 30, i.e., from the surface facing one axial side (+Z side), i.e., the other axial side (-Z side), and opening on both sides in the plate thickness direction Dt, the protrusion 44 faces an opposing surface 35d, which faces the upper side of the inner surface of the recess 35c, in the axial direction, and the width Wh of the hole 43a, i.e., the dimension of the hole 43a in the width direction Dw is larger than the width Wc of the recess 35c, i.e., the dimension of the recess in the width direction Dw. Therefore, since it is easy to increase the dimension of the second main body portion 43 in the width direction Dw, it is easy to increase the contact area between the second main body portion 43 and the holding member 30. Therefore, when the protrusion 44 is crimped radially inward in the crimping step S02, the second main body portion 43 can be stably supported in the radial direction by the holding member 30. Therefore, in the crimping step S02, the protruding portion 44 can be crimped more easily, and therefore an increase in the number of steps in the crimping step S02 can be suppressed.

[0061] According to this embodiment, the terminal portion 40 has an extension portion 46 extending radially, i.e., in the plate thickness direction Dt, from the end of the lower side of the terminal main body portion 41, i.e., the other axial side (-Z side), and the upper side of the extension portion 46, i.e., the surface facing one axial side (+Z side), faces the holding member 30. Therefore, when the terminal portion 40 tries to move upward relative to the holding member 30, the extension portion 46 comes into contact with the holding member 30 in the axial direction. Therefore, the upward movement of the terminal portion 40 relative to the holding member 30 can be suppressed, and the axial position of the terminal portion 40 relative to the holding member 30 can be more suitably determined.

[0062] According to this embodiment, the manufacturing method of the motor 10 includes a holding step Pr of holding the terminal portion 40 in the holding member 30, and the holding step Pr includes an insertion step S01 of inserting the terminal body 41 from the lower side, i.e., the other axial side (-Z side) into the holding hole 30a penetrating the holding member 30 in the axial direction, and positioning the protrusion 44 above the holding hole 30a, i.e., on one axial side (+Z side), and a crimping step S02 of crimping the protrusion 44 radially inward, i.e., on one side (+Dt side) in the plate thickness direction Dt, so that the lower end of the protrusion 44 faces the periphery of the holding hole 30a in the axial direction. Thus, as described above, in the insertion step S01, the terminal body 41 protruding downward from the upper edge of the hole 43a in the axial direction can be inserted into the holding hole 30a. Therefore, as described above, in the insertion step S01, when the protrusion 44 is passed through the retaining hole 30a, the protrusion 44 can be prevented from contacting the inner side surface of the retaining hole 30a. This can prevent the edge of the opposing surface 35d of the retaining hole 30a from being chipped due to contact with the protrusion 44. Therefore, the axial position of the terminal portion 40 relative to the retaining member 30 can be determined with high accuracy.

[0063] In addition, in the present embodiment, in the insertion step S01, an increase in the frictional force between the protrusion 44 and the inner surface of the retaining hole 30a can be suppressed, and therefore an increase in the force applied to the terminal 40 when passing the terminal body 41 through the retaining hole 30a can be suppressed. This makes it easier to pass the terminal body 41 through the retaining hole 30a, and therefore an increase in the number of steps in the insertion step S01 can be suppressed.

[0064] In the present embodiment, in the crimping step S02, the protrusion 44 protruding from the edge of the hole 43a is crimped by a crimping jig 95. Therefore, compared to a case in which a protrusion protruding radially inward is formed by crimping the plate-shaped terminal main body 41, the force applied to the terminal main body 41 when crimping the terminal main body 41 can be reduced. Therefore, the configuration of the crimping jig 95 can be easily simplified, and an increase in the manufacturing cost of the motor 10 can be suppressed.

[0065] Although one embodiment of the present invention has been described above, each configuration and their combination in the embodiment is merely an example, and addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiment.

[0066] The motor may be, for example, a brushless motor. Even in this case, it is possible to prevent the terminal portion from coming off the holding member when the cable terminal is inserted into the first main body portion.

[0067] The shape of the retaining member is not limited to this embodiment, and for example, the retaining member does not need to be provided with a recess. In this case, the retaining hole is a hole that penetrates the tubular portion and the retaining wall portion in the axial direction, and the opposing surface is the surface of the outer surface of the retaining wall portion that faces upward. Moreover, the protrusion is located above the retaining member. Even in this configuration, the lower end of the protrusion faces the periphery of the retaining hole in the axial direction, so that the terminal portion can be prevented from coming off the retaining member when the cable terminal is inserted into the first main body portion.

[0068] The present technology can be configured as follows. (1) A motor comprising: terminal portions electrically connected to a commutator fixed to a rotor rotatable about a central axis; and a retaining member for retaining the terminal portions, wherein the terminal portions have plate-shaped terminal main bodies extending in the axial direction, the terminal main bodies having holes penetrating the terminal main bodies in a plate thickness direction of the terminal main bodies, the retaining member has a retaining hole penetrating the retaining member in the axial direction and through which the terminal main bodies are passed, the terminal main bodies extending from an edge on one axial side of the hole portions to the other axial direction and positioned on one axial side of the retaining hole, the terminal main bodies being crimped to one side in the plate thickness direction and having a protrusion protruding to one side in the plate thickness direction, and an end portion on the other axial side of the protrusion axially facing a peripheral edge of the retaining hole. (2) The motor according to (1), wherein the protrusion is crimped in a radial direction. (3) A motor as described in (1) or (2), in which each of the hole portion and the protrusion portion is formed by pressing the terminal body portion, and a fracture surface and a shear surface are provided on a surface of the protrusion portion facing the other axial direction, and the fracture surface is located on one side of the shear surface in the plate thickness direction. (4) A motor described in any one of (1) to (3), wherein the protrusion has a tip portion, the tip portion being an end portion on the other axial side of the protrusion and an end portion on one side in the plate thickness direction, and the ratio of the distance in the plate thickness direction between the tip portion and the terminal main body portion to the thickness of the protrusion is 50% or less. (5) A motor described in any one of (1) to (4), wherein the protrusion has a tip portion, the tip portion being an end portion on the other axial side of the protrusion and an end portion on one side in the plate thickness direction, and the ratio of the distance between the tip portion and a portion of the protrusion that connects to an edge of the hole to a thickness of the protrusion is 150% or more and 250% or less. (6) A motor described in any one of (1) to (5), wherein the ratio of the width direction dimension of the protrusion, which is perpendicular to both the plate thickness direction and the axial direction, to the thickness of the protrusion is 150% or more and 250% or less. (7) A motor described in any one of (1) to (6), wherein the retaining member has a recess recessed from a surface facing one axial side of the retaining member to the other axial side and opening on both sides in the plate thickness direction, the protrusion faces in the axial direction to an opposing surface facing one axial side of the inner surface of the recess, and the width dimension of the hole portion perpendicular to both the plate thickness direction and the axial direction is larger than the width dimension of the recess. (8) A motor described in any one of (1) to (7), wherein the terminal portion has an extension portion extending in the plate thickness direction from the other axial end of the terminal main body portion, and a surface of the extension portion facing one axial side faces the retaining member. (9) A method for manufacturing a motor including terminal portions electrically connected to a commutator fixed to a rotor rotatable about a motor axis, and a retaining member for retaining the terminal portions, the method including a retaining step of retaining the terminal portions on the retaining member, the terminal portions having plate-shaped terminal main body portions extending in the axial direction, the terminal main body portions having a hole portion penetrating the terminal main body portions in a plate thickness direction of the terminal main body portions, and a protrusion portion protruding from an edge portion on one axial side of the hole portion to the other axial side, the retaining step including an insertion step of passing the terminal main body portions from the other axial side into a retaining hole penetrating the retaining member in the axial direction to position the protrusion portion on the one axial side of the retaining hole, and a crimping step of crimping the protrusion portion to one side in the plate thickness direction so that an end portion on the other axial side of the protrusion portion faces the peripheral edge portion of the retaining hole in the axial direction. [Explanation of symbols]

[0069] 10...motor, 20...rotor, 26...commutator, 30...holding member, 30a...holding hole, 35c...recess, 35d...opposing surface, 40...terminal portion, 41...terminal main body, 43a...hole portion, 44...projection portion, 44b...fracture surface, 44c...shear surface, 44g...tip portion, 46...extension portion, J...center axis, Pr...holding step, S01...insertion step, S02...crimping step

Claims

1. A terminal portion electrically connected to a commutator fixed to a rotor rotatable about a central axis; A holding member for holding the terminal portion; Equipped with The terminal portion has a plate-shaped terminal main body portion extending in an axial direction, The terminal body has a hole penetrating the terminal body in a thickness direction of the terminal body, The holding member is provided with a holding hole that axially penetrates the holding member and through which the terminal body is inserted, the terminal body portion extends from an edge portion on one axial side of the hole portion to the other axial side, is disposed on one axial side of the retaining hole, is crimped on one side in the plate thickness direction, and has a protruding portion protruding on one side in the plate thickness direction, A motor, wherein the other axial end of the protrusion faces a peripheral portion of the retaining hole in the axial direction.

2. The motor of claim 1 , wherein the protrusion is radially crimped.

3. the hole and the protrusion are each provided by pressing the terminal body, A fracture surface and a shear surface are provided on a surface of the protrusion facing the other axial direction, The motor according to claim 1 , wherein the fracture surface is located on one side of the shear surface in the plate thickness direction.

4. The protrusion has a tip portion, The tip portion is an end portion on the other axial side of the protrusion portion and an end portion on one side in the plate thickness direction, 3. The motor according to claim 1, wherein a ratio of a distance in the plate thickness direction between the tip portion and the terminal body to a thickness of the protrusion is 50% or less.

5. The protrusion has a tip portion, The tip portion is an end portion on the other axial side of the protrusion portion and an end portion on one side in the plate thickness direction, 3. The motor according to claim 1, wherein a ratio of a distance between a portion of the protrusion connected to an edge of the hole and the tip portion to a thickness of the protrusion is equal to or greater than 150% and equal to or less than 250%.

6. 3. The motor according to claim 1, 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 150% or more and 250% or less.

7. The holding member has a recess that is recessed from a surface facing one axial side of the holding member to the other axial side and opens to both sides in the plate thickness direction, The protruding portion faces in the axial direction a facing surface of the inner surface of the recess, the facing surface facing one axial side, The motor according to claim 1 , wherein a dimension of the hole in a width direction perpendicular to both the plate thickness direction and the axial direction is larger than a dimension of the recess in the width direction.

8. The terminal portion has an extension portion extending in the plate thickness direction from an end portion on the other axial side of the terminal body portion, The motor according to claim 1 , wherein a surface of the extension portion facing one axial side faces the holding member.

9. A method for manufacturing a motor including a terminal portion electrically connected to a commutator fixed to a rotor rotatable about a motor axis, and a holding member for holding the terminal portion, comprising: a holding step of holding the terminal portion on the holding member, The terminal portion has a plate-shaped terminal main body portion extending in an axial direction, The terminal body portion is a hole penetrating the terminal body in a thickness direction of the terminal body; a protruding portion protruding from an edge portion on one axial side of the hole portion toward the other axial side; having The holding step includes: an insertion step of inserting the terminal body from the other axial side into a retaining hole that penetrates the retaining member in the axial direction, and positioning the protrusion on one axial side of the retaining hole; a crimping process in which the protruding portion is crimped to one side in the plate thickness direction so that an end portion on the other axial side of the protruding portion faces a peripheral portion of the retaining hole in the axial direction; A method for manufacturing a motor comprising:

Images