JP2019176677A - Motor and method for manufacturing the same - Google Patents

Abstract

To provide a motor having a structure capable of adjusting a circumferential position of a rotary sensor held by a bus bar holder with respect to a to-be-detected part and improving fixing strength of the bus bar holder in a circumferential direction to a housing and to provide a method for manufacturing the same.SOLUTION: A housing includes: a first flange part; and a nail part. The nail part includes: a base part 123a; and a crimping part 123b. A bus bar holder includes: a bus bar holder body; and a second flange part. The crimping part 123b includes a plurality of fixed nails whose circumferential positions are different from each other. The second flange part includes a plurality of fixed recesses recessed on the other side in an axial direction. The plurality of fixed recesses has different circumferential positions. A circumferential distance between the plurality of fixed recesses is different from a circumferential distance between the plurality of fixed nails. One of the fixed nails is crimped on the other side in the axial direction and inserted into one of the fixed recesses and contacts a part of the circumferential direction both sides among inner surfaces of the fixed recesses.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a motor and a method for manufacturing the motor.

  There is known a motor in which a rotation sensor is held by a fixing member fixed to an opening of a stator case. For example, Patent Document 1 describes a motor including a resolver stator as such a rotation sensor and a sensor rotor as a detected portion detected by the resolver stator.

International Publication No. 2008/117728

  When the motor as described above is assembled, an error due to assembly or the like occurs between the components. Therefore, it is necessary to adjust the circumferential position of the fixing member with respect to the stator case and adjust the relative position between the rotation sensor and the detected part. Therefore, in the motor as described above, it is required that the stator case and the fixing member can be fixed after adjusting the circumferential position of the fixing member.

  On the other hand, for example, Patent Document 1 describes a configuration in which a fixing member is fixed to the stator case by caulking and fixing a claw provided on the stator case in a caulking groove larger than the width of the claw. According to this configuration, the fixing member can be moved in the circumferential direction with respect to the stator case as long as the claws are caulked in the caulking groove. Therefore, even after the circumferential position of the fixing member is adjusted, it is possible to fix the claw by caulking in the caulking groove. However, in such a configuration, the circumferential fixation is insufficient, and the claw moves in the circumferential direction in the crimping groove even after the claw is crimped into the crimping groove, and the fixing member is circumferential in the stator case. There was a risk of moving to.

  In view of the above circumstances, the present invention can adjust the circumferential position of the rotation sensor held by the bus bar holder with respect to the detected portion during assembly, and after assembly, the circumference of the bus bar holder with respect to the housing can be adjusted. It is an object of the present invention to provide a motor having a structure capable of improving the direction fixing strength and a method of manufacturing such a motor.

  One aspect of the motor of the present invention contains a rotor having a shaft and a detected portion that are arranged along a central axis, a stator that is arranged radially outside the rotor, the rotor and the stator, A housing having a first opening that opens on one axial side, a resin bus bar holder that is disposed on one axial side of the stator and closes the first opening, and is held by the bus bar holder; A bus bar electrically connected to the bus bar holder, and a rotation sensor that is directly or indirectly held by the bus bar holder and that can detect the rotation of the rotor by detecting the detected portion. The housing includes a cylindrical housing body extending in the axial direction, a first flange portion protruding radially outward from an end portion on one axial side of the housing body, and a claw portion connected to the first flange portion, Have The claw portion includes a base portion that extends from the first flange portion toward one side in the axial direction, and a crimping portion that extends radially inward from an end portion on the one axial side of the base portion. The bus bar holder protrudes radially outward from the bus bar holder main body disposed on the one axial side of the first opening, and contacts the surface on the one axial side of the first flange portion. A second flange portion. The caulking portion includes a caulking portion main body that contacts the second flange portion from one side in the axial direction, and a plurality of fixing claws provided on the caulking portion main body and having different circumferential positions. The second flange portion has a plurality of fixed recesses recessed on the other side in the axial direction. The plurality of fixed recesses have different circumferential positions. The circumferential distance between the plurality of fixed recesses and the circumferential distance between the plurality of fixed claws are different from each other. One of the fixed claws is caulked to the other side in the axial direction and inserted into one of the fixed recesses, and contacts the portions on both sides in the circumferential direction of the inner side surface of the fixed recess.

  One aspect of a method for manufacturing a motor according to the present invention is a method for manufacturing the motor described above, wherein the bus bar holder is moved in the circumferential direction with respect to the housing, and the periphery of the rotation sensor with respect to the detected portion. A position adjusting step of adjusting a directional position, and a fixing step of fixing the bus bar holder to the housing. In the fixing step, one of the plurality of fixing claws is caulked to the other side in the axial direction and inserted into the fixing recess.

  According to one aspect of the present invention, when the motor is assembled, the circumferential position of the rotation sensor held by the bus bar holder with respect to the detected portion can be adjusted, and after the motor is assembled, The fixing strength in the circumferential direction of the bus bar holder can be improved.

FIG. 1 is a cross-sectional view showing the motor of this embodiment. FIG. 2 is a view of the motor of this embodiment as viewed from above. FIG. 3 is a perspective view showing a part of the motor of this embodiment. 4 is a view showing a part of the motor of the present embodiment, and is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a perspective view showing a part of the motor of this embodiment. 6 is a view showing a part of the motor of this embodiment, and is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a perspective view showing the claw portion of the present embodiment. FIG. 8 is a perspective view showing a part of the second flange portion of the present embodiment. FIG. 9 is a view of a part of a motor as another example of the present embodiment as viewed from above.

  The Z-axis direction shown as appropriate in each drawing is a vertical direction in which the positive side is the upper side and the negative side is the lower side. The X-axis direction and the Y-axis direction are directions orthogonal to the Z-axis direction and are orthogonal to each other. A central axis J shown as appropriate in each drawing is an imaginary line parallel to the Z-axis direction and extending in the vertical direction. In the following description, the axial direction of the central axis J, that is, the direction parallel to the vertical direction is simply referred to as “axial direction Z”, and the radial direction around the central axis J is simply referred to as “radial direction”. The circumferential direction centered on J is simply referred to as “circumferential direction”. In the present embodiment, the upper side corresponds to one side in the axial direction, and the lower side corresponds to the other side in the axial direction. The vertical direction, the upper side, and the lower side are simply names for explaining the relative positional relationship of each part, and the actual layout relationship is a layout relationship other than the layout relationship indicated by these names. May be.

  As shown in FIG. 1, the motor 10 of the present embodiment includes a housing 20, a rotor 30, bearings 33 and 34, a stator 40, a bus bar unit 60, an O-ring 71, and an oil seal 73. . The housing 20 accommodates the rotor 30 and the stator 40 therein. The housing 20 is made of metal. The housing 20 includes a housing main body 21 and a first flange portion 22.

  The housing body 21 has a cylindrical shape having a first opening 20a that opens upward. That is, the housing 20 has a first opening 20a. The housing body 21 has a cylindrical shape extending in the axial direction Z. More specifically, the housing main body 21 has a multistage cylindrical shape centered on the central axis J. The housing body 21 includes a stator holding portion 21a, an enlarged diameter portion 21b, a bearing holding portion 21c, and an oil seal holding portion 21d. An outer peripheral surface of a stator core 41 described later in the stator 40 is fixed to the inner peripheral surface of the stator holding portion 21a.

  The enlarged diameter portion 21b is connected to the upper end portion of the stator holding portion 21a. The inner diameter and outer diameter of the enlarged diameter portion 21b are larger than the inner diameter and outer diameter of the stator holding portion 21a. The upper end portion of the enlarged diameter portion 21 b is the upper end portion of the housing main body 21. The lower diameter portion 21b accommodates a lower portion of a bus bar holder 60a described later.

  The bearing holding part 21c is connected to the lower end of the stator holding part 21a. The inner diameter and outer diameter of the bearing holding portion 21c are smaller than the inner diameter and outer diameter of the stator holding portion 21a. A bearing 33 is held inside the bearing holding portion 21c. The oil seal holding part 21d is connected to the lower end of the bearing holding part 21c. The inner diameter and outer diameter of the oil seal holding portion 21d are smaller than the inner diameter and outer diameter of the bearing holding portion 21c. The oil seal holding part 21d opens downward. An oil seal 73 is held inside the oil seal holding portion 21d.

  The first flange portion 22 protrudes radially outward from the upper end portion of the housing body 21. The first flange portion 22 has a plate shape whose plate surface faces the axial direction Z, and has an annular shape centering on the central axis J. As shown in FIG. 2, the first flange portion 22 includes a first flange portion main body 22a extending in the circumferential direction, and a first attachment portion 22b protruding outward in the radial direction from the first flange portion main body 22a. In the present embodiment, the first flange portion main body 22a has an annular shape centering on the central axis J. The first attachment portion 22b has a first attachment hole 22c that penetrates the first attachment portion 22b in the axial direction Z. The first mounting hole 22c has an oval shape that is long in the circumferential direction. In the present embodiment, three first attachment portions 22b are provided along the circumferential direction.

  The housing 20 further includes a first claw portion 23 and a second claw portion 123. In the present embodiment, for example, five first claw portions 23 are provided, and one second claw portion 123 is provided. The several 1st nail | claw part 23 and the 2nd nail | claw part 123 are arrange | positioned along the circumferential direction. As shown in FIG. 3, the 1st nail | claw part 23 and the 2nd nail | claw part 123 are connected with the radial direction outer edge part of the 1st flange part main body 22a. That is, the first claw part 23 and the second claw part 123 are connected to the first flange part 22. The 1st nail | claw part 23 has the base 23a and the crimping | crimped part 23b. The base portion 23a is a portion extending upward from the radial outer edge portion of the first flange portion main body 22a. That is, the base portion 23 a extends upward from the first flange portion 22. In the present embodiment, the base portion 23a has a plate shape whose plate surface faces the radial direction.

  The caulking portion 23b is a portion extending radially inward from the upper end portion of the base portion 23a. In the present embodiment, the caulking portion 23b has a plate shape whose plate surface extends in the circumferential direction. A radially inner portion of the caulking portion 23b extends obliquely downward. At least a part of the radially inner end of the caulking portion 23b is accommodated in a first accommodation recess 68d described later. The lower surface in the radially outer portion of the caulking portion 23b contacts an upper end portion of a third wall portion 68c described later. The first claw portion 23 is bent and crimped radially inward and downward from the state shown by the two-dot chain line in FIG. 4 to the state shown by the solid line in FIGS. 3 and 4. That is, the caulking portion 23b is formed by caulking the first claw portion 23 in the state indicated by the two-dot chain line in FIG.

  As shown in FIGS. 5 to 7, the second claw portion 123 includes a base portion 123 a and a caulking portion 123 b. The base 123 a is the same as the base 23 a of the first claw portion 23. The caulking portion 123b extends radially inward from the upper end portion of the base portion 123a. The caulking portion 123b is made by caulking the second claw portion 123 in a state as shown by a two-dot chain line in FIG. 4 in the same manner as the caulking portion 23b. As shown in FIG. 7, the crimping portion 123b includes a crimping portion main body 123h and a plurality of fixing claws 123g.

  In the present embodiment, the caulking portion main body 123h extends linearly inward in the radial direction from the upper end portion of the base portion 123a. In the present embodiment, the caulking portion main body 123h has a plate shape whose plate surface faces the axial direction Z. As shown in FIG. 6, the caulking portion main body 123 h contacts the second flange portion 67 from above. In the present embodiment, the crimping portion main body 123h is in contact with the upper surface of the second wall portion 68b described later.

  The crimping portion main body 123h has a through hole 123e that penetrates the crimping portion main body 123h in the axial direction Z. As shown in FIG. 5, in the present embodiment, the through-hole 123 e has a rectangular shape that is long in the radial direction when viewed along the axial direction Z. The through-hole 123e is provided in the center portion in the circumferential direction among the radially outer ends of the caulking portion main body 123h.

  As shown in FIG. 7, the plurality of fixing claws 123g are provided on the caulking portion main body 123h. The plurality of fixed claws 123g have different circumferential positions. In the present embodiment, the caulking portion 123b includes first fixed claws 123c and 123d and second fixed claws 123f as the fixed claws 123g. The first fixed claws 123c and 123d are connected to the radially inner end of the caulking portion main body 123h. In the present embodiment, the first fixed claw is provided with two of the first fixed claw 123c and the first fixed claw 123d.

  The first fixed claw 123c and the first fixed claw 123d are arranged with an interval in the circumferential direction. The first fixed claws 123c and 123d extend downward from the radially inner end of the caulking portion main body 123h. In the present embodiment, the first fixed claw 123c extends downward from the end on the one side in the circumferential direction among the ends on the radially inner side of the caulking portion main body 123h. In the present embodiment, the first fixed claw 123d extends downward from the other end in the circumferential direction among the radially inner ends of the caulking portion main body 123h. In the present embodiment, the lower ends of the first fixed claws 123c and 123d protrude inward in the radial direction.

  The second fixed claw 123f is located on the radially outer side than the first fixed claw 123c. As shown in FIG. 5, the second fixed claw 123f extends radially inward from a radially outer portion of the inner surface of the through hole 123e. According to such a structure, the 2nd fixing nail | claw 123f can be made with a part of crimping | crimped part main body 123h by providing a cut | notch in the crimping | crimped part main body 123h. Therefore, the production of the second fixed claw 123f can be facilitated. In the present embodiment, the second fixed claw 123f has a plate shape whose plate surface faces the axial direction Z. The second fixed claw 123f has a rectangular shape that is long in the radial direction when viewed along the axial direction Z.

  The second fixing claw 123f is provided at a central portion in the circumferential direction among the radially outer ends of the crimping portion main body 123h. The second fixed claws 123f are located between the adjacent first fixed claws 123c and 123d in the circumferential direction. In other words, the circumferential position of the second fixed claw 123f is between the circumferential positions of the first fixed claws 123c and 123d adjacent in the circumferential direction. In the present embodiment, the circumferential distance between the second fixed claw 123f and the first fixed claw 123c and the circumferential distance between the second fixed claw 123f and the first fixed claw 123d are, for example, The same. As shown in FIG. 6, in the present embodiment, the second fixed claw 123 f is positioned below the upper surface of the caulking portion main body 123 h. The second fixed claw 123f protrudes downward from the lower surface of the crimping portion main body 123h.

  As shown in FIG. 1, the rotor 30 includes a shaft 31, a rotor body 32, and a sensor magnet 36. The shaft 31 is disposed along the central axis J. The shaft 31 has a cylindrical shape extending in the axial direction Z with the central axis J as the center. The shaft 31 is rotatably supported by bearings 33 and 34. The bearings 33 and 34 are ball bearings, for example. The rotor body 32 is fixed to the outer peripheral surface of the shaft 31. Although illustration is omitted, the rotor main body 32 has a rotor core fixed to the outer peripheral surface of the shaft 31 and a rotor magnet fixed to the rotor core. The rotor core may be directly fixed to the shaft 31 or may be indirectly fixed via a member or the like. The rotor magnet may be a single magnet or a plurality of magnets.

  The sensor magnet 36 is fixed to the shaft 31. More specifically, the sensor magnet 36 is fixed to the upper end portion of the shaft 31 via the attachment member 35. The attachment member 35 has an annular shape along the circumferential direction. The attachment member 35 is fitted and fixed to the upper end portion of the shaft 31. In the present embodiment, the sensor magnet 36 has an annular shape centering on the central axis J. The sensor magnet 36 is fixed to the upper surface of the radially outer edge portion of the mounting member 35. The sensor magnet 36 may be directly fixed to the shaft 31. Further, the sensor magnet 36 may be held directly or indirectly by the rotor body 32. In the present embodiment, the sensor magnet 36 corresponds to a detected part.

  The stator 40 is disposed on the radially outer side of the rotor 30. The stator 40 includes a stator core 41, an insulator 44, and a plurality of coils 45. The stator core 41 includes an annular core back 42 centered on the central axis J and a plurality of teeth 43 extending radially inward from the core back 42. The outer peripheral surface of the core back 42 is fixed to the inner peripheral surface of the stator holding portion 21a. The insulator 44 is attached to the teeth 43. The plurality of coils 45 are attached to the teeth 43 via insulators 44.

  Bus bar unit 60 is arranged above stator 40. The bus bar unit 60 includes a bus bar holder 60a, a circuit board 80, a rotation sensor 83, and bus bars 81 and 82. That is, the motor 10 includes a bus bar holder 60a, a circuit board 80, a rotation sensor 83, and bus bars 81 and 82. The bus bar holder 60 a is a member that holds the bus bars 81 and 82. The bus bar holder 60 a is disposed on the upper side of the stator 40. The bus bar holder 60a closes the first opening 20a. The bus bar holder 60 a is supported from the lower side by the first flange portion 22. The bus bar holder 60a is made of resin. The bus bar holder 60a includes a bus bar holder main body 61, a fitting portion 62, a connector portion 63, a bearing holding portion 64, a connecting portion 65, a support portion 66, a second flange portion 67, a lid portion 69, Have

  As shown in FIGS. 1 and 2, the bus bar holder main body 61 has a cylindrical shape having a second opening 61a that opens upward. More specifically, the bus bar holder main body 61 is open substantially on both sides in the axial direction and has a substantially cylindrical shape centered on the central axis J. The bus bar holder body 61 is disposed on the upper side of the first opening 20a. In the present embodiment, the bus bar holder main body 61 is disposed on the upper side of the stator 40.

  As shown in FIG. 2, the bus bar holder main body 61 has a protruding portion 61b that protrudes radially outward. The protrusion 61b is substantially rectangular when viewed along the axial direction Z. The direction in which the protruding portion 61b protrudes is a direction parallel to the X-axis direction. In the following description, a direction in which the protruding portion 61b protrudes, that is, a direction parallel to the X-axis direction is referred to as a “projection direction X”.

  As shown in FIG. 1, the fitting portion 62 protrudes downward from the bus bar holder main body 61. Although illustration is omitted, the fitting portion 62 has an arc shape extending in the circumferential direction. The shape of the fitting part 62 is, for example, a C-shape that opens along the axial direction Z and opens toward the connector part 63 in the protruding direction X. The fitting portion 62 is inserted into the housing 20. More specifically, the fitting portion 62 is fitted inside the enlarged diameter portion 21b, that is, the first opening 20a.

  The connector part 63 extends radially outward from the bus bar holder body 61. More specifically, the connector portion 63 extends in the protruding direction X from the bus bar holder main body 61. The connector part 63 protrudes radially outward from the housing 20. The connector portion 63 has a recess that is recessed radially inward from the radially outer end of the connector portion 63. An external device (not shown) is connected to the connector portion 63. The external device is, for example, a control device that controls the motor 10 by supplying power to the motor 10.

  The bearing holding portion 64 is disposed on the radially inner side of the bus bar holder main body 61. The bearing holding portion 64 has a substantially cylindrical shape with the central axis J as the center. The bearing holding part 64 holds the bearing 34 inside. As shown in FIG. 2, the bearing holding portion 64 is connected to the bus bar holder main body 61 via the connecting portion 65. As shown in FIG. 1, the support portion 66 protrudes upward from the bearing holding portion 64. The upper end portion of the support portion 66 protrudes above the bus bar holder main body 61 through the second opening 61a. As shown in FIG. 2, a plurality of support portions 66 are provided along the circumferential direction.

  The second flange portion 67 protrudes radially outward from the bus bar holder body 61. As shown in FIG. 1, in the present embodiment, the second flange portion 67 protrudes radially outward from the lower end portion of the bus bar holder body 61. The second flange portion 67 contacts the upper surface of the first flange portion 22. As shown in FIG. 2, the second flange portion 67 includes a second flange portion main body 67a extending in the circumferential direction, and a second attachment portion 67b projecting radially outward from the second flange portion main body 67a.

  The second flange portion main body 67a has a C-shape that opens along the axial direction Z and opens toward the connector portion 63 in the protruding direction X. The ends on both sides in the circumferential direction of the second flange portion main body 67a are connected to the ends on both sides in the circumferential direction of the protruding portion 61b. The radially outer edge portion of the second flange portion main body 67a is disposed on the radially inner side of the radially outer edge portion of the first flange portion main body 22a. As shown in FIG. 4, the second flange portion main body 67a contacts the upper surface of the first flange portion main body 22a.

  The second flange portion main body 67a has a groove 67d that is recessed upward from the lower surface. That is, the second flange portion 67 has a groove 67d. Although not shown, the groove 67d has an annular shape centered on the central axis J. In the present embodiment, the groove 67d is provided across the lower surface of the second flange portion main body 67a and the lower surface of the protruding portion 61b.

  As shown in FIG. 2, in the present embodiment, three second attachment portions 67b are provided along the circumferential direction. Each second attachment portion 67b overlaps with each first attachment portion 22b when viewed along the axial direction Z. The lower surface of the second attachment portion 67b is in contact with the upper surface of the first attachment portion 22b. The second attachment portion 67b has a second attachment hole 67c that penetrates the second attachment portion 67b in the axial direction Z. The second mounting hole 67c is circular. In the first attachment portion 22b and the second attachment portion 67b that overlap with each other in the axial direction Z, the first attachment hole 22c and the second attachment hole 67c overlap each other when viewed along the axial direction Z.

  A screw for attaching the motor 10 to a device in which the motor 10 is mounted is passed through the first attachment hole 22c and the second attachment hole 67c. With the screws, the first attachment portion 22b and the second attachment portion 67b are attached to a device on which the motor 10 is mounted. In the present embodiment, a cylindrical tube member 84 extending in the axial direction Z is fitted and fixed in the second mounting hole 67c. The cylindrical member 84 opens on both sides in the axial direction. The cylinder member 84 is made of metal. The screw for attaching the motor 10 passes through the inside of the cylindrical member 84 in the second attachment hole 67c.

  As shown in FIG. 2, the second flange portion 67 further includes a plurality of crimping accommodation portions 68 arranged along the circumferential direction. In this embodiment, the crimping accommodation part 68 is provided in the 2nd flange part main body 67a. As shown in FIGS. 3 and 4, the caulking housing portion 68 has a pair of first wall portions 68 a, second wall portions 68 b, and third wall portions 68 c. That is, the 2nd flange part 67 has a pair of 1st wall part 68a, the 2nd wall part 68b, and the 3rd wall part 68c. As shown in FIG. 3, the pair of first wall portions 68a extend in the radial direction and are spaced apart from each other in the circumferential direction. The pair of first wall portions 68a are parallel to each other. The pair of first wall portions 68a protrudes radially outward from the second flange portion main body 67a. The upper end portions of the pair of first wall portions 68a are disposed above the second flange portion main body 67a, and extend radially on the upper surface of the second flange portion main body 67a so as to be connected to the bus bar holder main body 61. .

  The 1st nail | claw part 23 is arrange | positioned between the circumferential directions of a pair of 1st wall parts 68a. The circumferential distance between the pair of first wall portions 68 a is larger than the circumferential width of the first claw portion 23. A base 23a is disposed between the radially outer ends of the pair of first wall portions 68a.

  The second wall portion 68b protrudes upward from the second flange portion main body 67a. The second wall portion 68b extends linearly along the circumferential direction, and connects the central portions in the radial direction at the upper ends of the pair of first wall portions 68a. As shown in FIGS. 3 and 4, the third wall portion 68 c protrudes upward from a portion between the pair of first wall portions 68 a in the radially outer edge portion of the second flange portion main body 67 a. The third wall portion 68c extends linearly along the circumferential direction and connects the pair of first wall portions 68a. As shown in FIG. 4, the upper end surface 68 f of the third wall portion 68 c in the cross section orthogonal to the circumferential direction is a curved surface protruding upward, and has a portion where the curvature changes along the radial direction. The third wall portion 68 c is disposed between the crimping portion 23 b and the first flange portion 22 in the axial direction Z. In the present embodiment, the third wall portion 68c is disposed between the crimping portion 23b and the first flange portion main body 22a in the axial direction Z.

  As shown in FIGS. 3 and 4, the caulking housing portion 68 has a first housing recess 68 d and a second housing recess 68 e. That is, the second flange portion 67 includes a first accommodation recess 68d and a second accommodation recess 68e. 68 d of 1st accommodating recessed parts are recessed parts dented below, and are comprised by the 2nd flange part main body 67a, a pair of 1st wall part 68a, the 2nd wall part 68b, and the 3rd wall part 68c. . That is, the first wall 68a is disposed on both sides in the circumferential direction of the first housing recess 68d. The third wall portion 68c is a wall portion having a radially outer surface among the inner surfaces of the first housing recess 68d. The radially outer surface of the inner side surface of the first housing recess 68d is the radially inner side surface of the third wall portion 68c. The circumferential dimension of the first housing recess 68d is larger than the circumferential dimension of the caulking portion 23b.

  The second housing recess 68e is a recess recessed downward, and is configured to be surrounded by the second flange portion main body 67a, the pair of first wall portions 68a, the second wall portion 68b, and the bus bar holder main body 61. . That is, the first wall 68a is disposed on both sides in the circumferential direction of the second housing recess 68e. The second housing recess 68e is disposed on the radially inner side of the first housing recess 68d. The dimension in the circumferential direction of the second accommodating recess 68e is larger than the dimension in the circumferential direction of the crimping portion 23b. For example, the circumferential dimension of the first housing recess 68d and the circumferential dimension of the second housing recess 68e are the same.

  Each crimping portion 23b sandwiches the second flange portion 67 in the axial direction Z between the first flange portion main body 22a in each crimping accommodation portion 68. Thereby, it can suppress that the bus-bar holder 60a moves to the axial direction Z with respect to the housing 20. FIG. More specifically, the lower surface of the caulking portion 23b contacts the upper end surface 68f of the third wall portion 68c, and presses the third wall portion 68c against the first flange portion main body 22a from the upper side.

  Moreover, according to this embodiment, the 1st wall part 68a is connected to the edge part of the circumferential direction both sides of the 3rd wall part 68c. Therefore, the force applied to the third wall portion 68c from the crimping portion 23b can be distributed to the first wall portion 68a and escaped. Therefore, even if a relatively large force is applied from the caulking portion 23b to the third wall portion 68c, it is possible to suppress the bus bar holder 60a from being damaged. Moreover, since a pair of 1st wall part 68a protrudes in a radial direction outer side from the 2nd flange part main body 67a, the intensity | strength of the crimping accommodation part 68 can be improved with a pair of 1st wall part 68a. Therefore, the bus bar holder 60a can be further prevented from being damaged.

  As shown in FIG. 4, at least a part of the radially inner end portion of the caulking portion 23b is accommodated in the first accommodation recess 68d. Therefore, in a state where the crimping portion 23b is in contact with the third wall portion 68c, the radially inner end portion of the crimping portion 23b can be crimped below the upper end portion of the third wall portion 68c. Thereby, the crimping | crimped part 23b can be pressed more strongly with respect to the 3rd wall part 68c. Therefore, the bus bar holder 60 a can be further suppressed from moving in the axial direction Z with respect to the housing 20. Moreover, since the crimping | crimped part 23b is hooked in the 1st accommodating recessed part 68d, it can suppress that the crimping | crimped part 23b remove | deviates from the crimping | crimped container 68.

  In addition, according to the present embodiment, since the second accommodating recess 68e is provided, by increasing the size of the first claw portion 23, at least a part of the radially inner end portion of the caulking portion 23b is the first. 2 It can also be accommodated inside the accommodating recess 68e. In this case, since the dimension of the crimping part 23b becomes long, the crimping part 23b is easier to crimp. Therefore, it is easy to fix the bus bar holder 60a more firmly by the crimping portion 23b.

  As shown in FIG. 2, the second flange portion 67 further includes a caulking fixing portion 168. The caulking fixing portion 168 is a portion to which the caulking portion 123b of the second claw portion 123 is fixed. In the present embodiment, the caulking fixing portion 168 is disposed between the caulking housing portion 68 and the second mounting portion 67b in the circumferential direction of the second flange portion main body 67a.

  As shown in FIG. 8, the caulking fixing portion 168 includes first fixing recesses 168g and 168h and a second fixing recess 168i as a plurality of fixing recesses 168j. That is, the second flange portion 67 includes first fixed recesses 168g and 168h and a second fixed recess 168i as a plurality of fixed recesses 168j. The caulking fixing portion 168 has substantially the same shape as the caulking housing portion 68 except that the caulking fixing portion 168 has the first fixing concave portions 168g and 168h and the second fixing concave portion 168i. That is, the caulking fixing portion 168 is similar to the caulking housing portion 68 in that the pair of first wall portions 68a, the second wall portion 68b, the third wall portion 168c, the first housing recess portion 68d, and the second housing recess portion. 168e.

  In the present embodiment, the shape of the upper end surface of the third wall portion 168 c is different from that of the third wall portion 68 c of the caulking housing portion 68. In the present embodiment, the upper end surface of the third wall portion 168c is a flat surface orthogonal to the axial direction Z. The upper end surface of the third wall portion 168c may have the same shape as the end surface 68f of the third wall portion 68c in the caulking housing portion 68. Unlike the third wall portion 68 c of the caulking housing portion 68, the third wall portion 168 c is provided with a second fixed recess 168 i. In the present embodiment, unlike the second accommodation recess 68e of the caulking accommodation portion 68, first fixing recesses 168g and 168h are provided on the bottom surface of the second accommodation recess 168e.

  As shown in FIG. 5, the second claw portion 123 is arranged between the pair of first wall portions 68 a in the caulking fixing portion 168 between the circumferential directions. The circumferential distance between the pair of first wall portions 68 a in the caulking fixing portion 168 is larger than the circumferential width of the second claw portion 123. In the caulking fixing portion 168, the base portion 123a of the second claw portion 123 is disposed between the radially outer ends of the pair of first wall portions 68a.

  As shown in FIG. 8, the first fixed recesses 168g and 168h and the second fixed recess 168i are recessed downward. In the present embodiment, the first fixed recesses 168g and 168h are recessed downward from the bottom surface of the second accommodation recess 168e. The first fixed recess 168g and the first fixed recess 168h are arranged with a gap in the circumferential direction. The first fixed recess 168g is disposed at the end on one side in the circumferential direction at the radially outer end of the bottom surface of the second housing recess 168e. The first fixed recess 168h is disposed at the end on the other circumferential side of the radially outer end of the bottom surface of the second housing recess 168e. In the present embodiment, the first fixed recesses 168g and 168h are rectangular when viewed along the axial direction Z. As shown in FIGS. 5 and 6, the first fixed recesses 168g and 168h have the same positions as the first fixed claws 123c and 123d in the radial direction. In the present embodiment, the radial position of the first fixed recess 168g and the radial position of the first fixed recess 168h are the same.

  As shown in FIG. 8, in the present embodiment, the second fixed recess 168i is recessed downward from the upper end of the third wall portion 168c. The second fixed recess 168i penetrates the third wall portion 168c in the radial direction. The second fixed recess 168i is provided at the center in the circumferential direction of the third wall 168c. In the present embodiment, the second fixed recess 168i is located between the first fixed recess 168g and the first fixed recess 168h in the circumferential direction. In other words, the circumferential position of the second fixed recess 168i is between the circumferential positions of the first fixed recesses 168g and 168h adjacent in the circumferential direction. Thus, the first fixing recesses 168g and 168h, which are the plurality of fixing recesses 168j, and the second fixing recess 168i have different circumferential positions. In the present embodiment, the circumferential distance between the second fixed recess 168i and the first fixed recess 168g and the circumferential distance between the second fixed recess 168i and the first fixed recess 168h are, for example, The same.

  The second fixed recess 168i is located on the radially outer side than the first fixed recesses 168g and 168h. The second fixed recess 168i has a portion whose radial position is the same as that of the second fixed claw 123f. The second fixed recess 168i is located above the first fixed recesses 168g and 168h.

  The circumferential distance between the plurality of fixed recesses 168j and the circumferential distance between the plurality of fixed claws 123g are different from each other. In this embodiment, the circumferential distance between the fixed recesses 168j is, for example, the circumferential distance between the first fixed recess 168g and the second fixed recess 168i, the second fixed recess 168i, and the first fixed recess 168h. And a circumferential distance between the first fixed recess 168g and the first fixed recess 168h. In the present embodiment, the circumferential distance between the plurality of fixed claws 123g is, for example, the circumferential distance between the first fixed claw 123c and the second fixed claw 123f, and the second fixed claw 123f and the first fixed claw. And a circumferential distance between the first fixed claw 123c and the first fixed claw 123d.

  As shown in FIG. 5, the circumferential distance between the first fixed claw 123c and the first fixed claw 123d is smaller than the circumferential distance between the first fixed recess 168g and the first fixed recess 168h. The circumferential distance between the first fixed claw 123c and the second fixed claw 123f is smaller than the circumferential distance between the first fixed recess 168g and the second fixed recess 168i. The circumferential distance between the first fixed claw 123d and the second fixed claw 123f is smaller than the circumferential distance between the first fixed recess 168h and the second fixed recess 168i.

  One of the fixed claws 123g is caulked downward and inserted into one of the fixed recesses 168j, and comes into contact with both circumferential portions of the inner side surface of the fixed recess 168j. Therefore, one of the fixing claws 123g can be fixed in the circumferential direction by one of the fixing recesses 168j, and the caulking portion 123b can be prevented from moving in the circumferential direction. Therefore, the fixing strength in the circumferential direction of the bus bar holder 60a with respect to the housing 20 can be improved, and the bus bar holder 60a can be further suppressed from moving in the circumferential direction with respect to the housing 20.

  On the other hand, before the fixing claw 123g inserted into the fixing recess 168j is crimped, the second claw portion 123 is movable in the circumferential direction with respect to the bus bar holder 60a, and the bus bar holder 60a is moved in the circumferential direction with respect to the housing 20. Can be moved to. Then, after the circumferential position of the bus bar holder 60a is determined, one of the fixing claws 123g is caulked and inserted into the fixing recess 168j, whereby the caulking portion 123b can be fixed in the circumferential direction.

  In order to caulk and insert one of the fixed claws 123g into one of the fixed recesses 168j, any one of the fixed claws 123g is placed at the same circumferential position on the upper side of any one of the fixed recesses 168j. Need to be deployed. Here, the circumferential distance between the plurality of fixed recesses 168j and the circumferential distance between the plurality of fixed claws 123g are different from each other. Therefore, when one fixed claw 123g is disposed at the same circumferential position above one fixed recess 168j, the other fixed claw 123g is disposed at a position shifted in the circumferential direction with respect to any of the fixed recesses 168j. Is done. Accordingly, a caulking portion 123b that is fixed to the bus bar holder 60a depending on which one of the plurality of fixing claws 123g is aligned with the one of the plurality of fixing recesses 168j in the circumferential direction. The circumferential position of each can be changed. Therefore, it is possible to select the circumferential position of the caulking portion 123b with respect to the bus bar holder 60a from at least the circumferential positions equal to or more than the number of the fixing claws 123g, and fix the fixing claw 123g to the fixing recess 168j. Therefore, even if the bus bar holder 60a is rotated to adjust the circumferential position of the rotation sensor 83, the bus bar holder 60a and the housing 20 can be firmly fixed in the circumferential direction.

  Thus, according to this embodiment, when the motor 10 is assembled, the circumferential position of the rotation sensor 83 held by the bus bar holder 60a with respect to the sensor magnet 36 can be adjusted, and after the motor 10 is assembled. Can improve the fixing strength of the bus bar holder 60 a in the circumferential direction with respect to the housing 20.

  In addition, for example, even when one fixing claw is provided for a plurality of fixing recesses, by selecting which fixing recess the fixing claw is to be inserted into, the number of fixing recesses can be caulked to the bus bar holder. The circumferential position of the part can be adjusted. However, in this case, the circumferential position of the crimping portion can be changed only by the circumferential distance between the fixed recesses. Therefore, the circumferential position of the rotation sensor 83 cannot be finely adjusted, and the position adjustment accuracy of the rotation sensor 83 may be reduced.

  On the other hand, according to the present embodiment, a plurality of fixed claws 123g and a plurality of fixed recesses 168j are provided, and the circumferential distance between the fixed claws 123g and the circumferential distance between the fixed recesses 168j Are different from each other. Therefore, the circumferential position of the caulking portion 123b can be changed by the difference between the circumferential distance between the fixed claws 123g and the circumferential distance between the fixed recesses 168j. Specifically, in a state in which a certain fixed claw 123g is aligned with a circumferential position of a fixed recess 168j, the other fixed claw 123g is displaced in the circumferential direction by a predetermined amount with respect to the other fixed recess 168j. To do. In this case, if the crimping portion 123b is moved in the circumferential direction by a predetermined amount, the circumferential positions of the other fixed claws 123g and the other fixed recesses 168j can be matched. Therefore, it is possible to finely adjust the caulking portion 123b rather than aligning a certain fixing claw 123g from a certain fixing recess 168j to the circumferential position of another fixing recess 168j. Thereby, the space | interval of the circumferential direction position which can adjust the rotation sensor 83 can be made small. Therefore, the circumferential position of the rotation sensor 83 can be adjusted with higher accuracy.

  Further, the caulking portion main body 123h contacts the second flange portion 67 from above. Therefore, the caulking portion main body 123h sandwiches the second flange portion 67 in the axial direction Z with the first flange portion main body 22a. Thereby, it can suppress more that the bus-bar holder 60a moves to the axial direction Z with respect to the housing 20. FIG. More specifically, the lower surface of the crimping portion main body 123h contacts the upper surface of the second wall portion 68b, and presses the second flange portion main body 67a against the first flange portion main body 22a from above.

  Moreover, according to this embodiment, the 1st fixed claw 123c, 123d and the 2nd fixed claw 123f from which radial direction position mutually differs are provided, and each fixed claw 123g and the 1st fixed recessed part which has a part where radial direction position is the same. 168g, 168h and a second fixed recess 168i are provided. Therefore, for example, compared with the case where the radial positions of all the fixed claws and the radial positions of all the fixed recesses are the same, the fixed claws 123g and the fixed recesses 168j are less likely to interfere with each other in the circumferential direction. Thereby, it is easy to provide a plurality of the fixing claws 123g and the fixing recesses 168j.

  Further, according to the present embodiment, the second fixed claws 123f are located between the adjacent first fixed claws 123c and 123d in the circumferential direction. Therefore, the first fixing claw 123c and the first fixing claw 123d are arranged sufficiently apart from each other in the circumferential direction, and the circumferential position of the caulking portion 123b is also arranged in the circumferential position between the first fixing claws 123c and 123d. Can be matched. This makes it possible to reduce the interval between the adjustable circumferential positions of the rotation sensor 83 while facilitating the provision of the plurality of fixing claws 123g and the fixing recesses 168j.

  In the example of FIGS. 5 and 6, the second fixed claw 123f of the plurality of fixed claws 123g is caulked downward and inserted into the second fixed recess 168i. End portions on both sides in the circumferential direction of the second fixed claw 123f are in contact with portions on both sides in the circumferential direction of the inner side surface of the second fixed recess 168i. The lower surface of the second fixed claw 123f is in contact with the lower bottom surface of the inner surface of the second fixed recess 168i.

  On the other hand, as shown in FIG. 5, among the plurality of fixed claws 123g, the first fixed claws 123c and 123d are shifted in the circumferential direction from the first fixed recesses 168g and 168h. That is, the first fixed claws 123c and 123d are in positions where they cannot be inserted into the first fixed recesses 168g and 168h even if the first fixed claws 123c and 123d are caulked downward. In the present embodiment, as viewed along the axial direction Z, only a part of the first fixed claw 123c overlaps a part of the first fixed recess 168g. Further, as viewed along the axial direction Z, only a part of the first fixed claw 123d overlaps a part of the first fixed recess 168h.

  In the present embodiment, the first fixing claws 123c and 123d are inserted into the second housing recess 168e. Therefore, it is possible to prevent the first fixing claws 123c and 123d from being caught by the second housing recess 168e and the caulking portion 123b from coming off the caulking fixing portion 168. In the present embodiment, the lower ends of the first fixing claws 123c and 123d are in contact with the bottom surface of the second accommodation recess 168e. That is, of the plurality of first fixed claws 123c and 123d, the first fixed claws 123c and 123d positioned outside the fixed recess 168j are in contact with the bottom surface of the second storage recess 168e as the storage recess. For this reason, the second flange portion main body 67a can be pressed from above by the first fixing claws 123c and 123d, and the fixing strength in the axial direction Z of the bus bar holder 60a with respect to the housing 20 can be further improved.

  As shown in FIG. 1, the lid 69 is fixed to the upper end of the bus bar holder main body 61 and closes the second opening 61 a. The central portion 69 a of the lid portion 69 protrudes above the radial outer edge portion 69 b of the lid portion 69. The lid 69 is made of resin. The lid portion 69 is a single member that is made separately from portions other than the lid portion 69 of the bus bar holder 60a. The lid 69 is welded and fixed to the bus bar holder main body 61. More specifically, the lid 69 is fixed by welding the entire circumference of the radially outer edge portion 69b to the entire circumference of the upper end of the bus bar holder body 61. The lid 69 and the bus bar holder main body 61 are welded by, for example, laser welding that irradiates a laser to a joint portion between the lid 69 and the bus bar holder main body 61. According to this embodiment, since the cover part 69 is resin, unlike the case where a metal cover is provided, the cover part 69 can be prevented from rusting. In addition, illustration of the cover part 69 is abbreviate | omitted in FIG.

  In the present embodiment, the portion of the bus bar holder 60a excluding the lid 69 is made as a single member by insert molding using the bus bars 81 and 82 as insert members, for example.

  As shown in FIGS. 1 and 2, the circuit board 80 has a plate shape whose plate surface faces the axial direction Z. The circuit board 80 is supported from below by the plurality of support portions 66. Thereby, the circuit board 80 is held by the bus bar holder 60a. As shown in FIG. 1, the circuit board 80 is disposed above the bus bar holder body 61. The circuit board 80 is accommodated in a central portion 69 a that protrudes upward from the lid portion 69.

  The rotation sensor 83 is attached to the lower surface of the circuit board 80. That is, in the present embodiment, the rotation sensor 83 is indirectly held by the bus bar holder 60a via the circuit board 80. The rotation sensor 83 is disposed on the upper side of the sensor magnet 36 so as to face the gap with a gap. The rotation sensor 83 is a sensor that can detect the rotation of the rotor 30 by detecting the sensor magnet 36 as the detected portion. In the present embodiment, the rotation sensor 83 is a magnetic sensor. The magnetic sensor is not particularly limited, and examples thereof include a Hall element such as a Hall IC and a magnetoresistive element. The rotation sensor 83 can detect the rotation of the rotor 30 by detecting the magnetic field of the sensor magnet 36.

  In the present embodiment, since the motor 10 is a three-phase motor, three Hall elements are used as magnetic sensors. The rotation sensor 83 may be directly held by the bus bar holder 60a without the circuit board 80. The rotation sensor 83 may be a sensor that detects not only the rotation position of the rotor 30 but also the rotation speed of the rotor 30. It is preferable that the number and arrangement of the rotation sensors 83 are appropriately changed according to the number of phases of the motor 10 and the type of the rotation sensor 83.

  Bus bar 81 is electrically connected to stator 40. One end of the bus bar 81 is connected to the coil 45. The other end of the bus bar 81 protrudes radially outward from the bottom surface of the concave portion of the connector portion 63. The other end of the bus bar 81 is exposed to the outside of the motor 10. One end of the bus bar 82 is connected to the upper surface of the circuit board 80. The other end of the bus bar 82 projects radially outward from the bottom surface of the concave portion of the connector portion 63. The other end of the bus bar 82 is exposed to the outside of the motor 10.

  The bus bars 81 and 82 are electrically connected to a control device connected to the connector part 63. The bus bar 81 is supplied with current from the control device. As a result, current from the control device is supplied to the coil 45 via the bus bar 81. The bus bar 82 electrically connects the rotation sensor attached to the circuit board 80 and the control device. The bus bars 81 and 82 are partially embedded and held in the bus bar holder 60a.

  Although not shown, the O-ring 71 has an annular shape centering on the central axis J. As shown in FIG. 4, the O-ring 71 is fitted into the groove 67d. The O-ring 71 is disposed between the first flange portion 22 and the second flange portion 67 in the axial direction Z. The O-ring 71 is in contact with the upper surface of the first flange portion main body 22a and the groove bottom surface of the groove 67d. Thereby, the O-ring 71 seals between the axial direction Z between the first flange portion 22 and the second flange portion 67 and between the axial direction Z between the first flange portion 22 and the protruding portion 61b. The O-ring 71 is in a state of being elastically compressed and deformed in the axial direction Z.

  Thus, according to this embodiment, since the 2nd flange part 67 is resin, the groove | channel 67d can be provided in the lower surface of the 2nd flange part 67, and the O-ring 71 can be arrange | positioned. Therefore, for example, it is easier to seal between the first flange portion 22 and the second flange portion 67 than in the case of sealing between metal members by applying a liquid gasket. And it can be performed with high accuracy. Moreover, it can prevent that the 2nd flange part 67 rusts by making the 2nd flange part 67 from resin.

  The method for manufacturing the motor 10 according to the present embodiment includes an arrangement step S1, a position adjustment step S2, and a fixing step S3. The placement step S <b> 1 is a step of placing the bus bar holder 60 a with respect to the housing 20. An operator or the like who assembles the motor 10 in the arranging step S1 houses the stator 40 and the rotor 30 in the housing 20, and then brings the second flange portion 67 into contact with the first flange portion 22 to bring the bus bar holder 60a, that is, the bus bar unit 60 into contact. Arranged above the stator 40. At this time, the O-ring 71 is fitted in the groove 67d in advance. At this time, the first claw portion 23 of the housing 20 is in a state before being crimped as shown by a two-dot chain line in FIG. Moreover, the 2nd nail | claw part 123 is also the state before crimping like the 1st nail | claw part 23 shown with a dashed-two dotted line in FIG.

  The position adjustment step S2 is a step of adjusting the circumferential position of the rotation sensor 83 with respect to the sensor magnet 36. In the position adjustment step S <b> 2, an operator or the like moves the bus bar holder 60 a in the circumferential direction with respect to the housing 20 to adjust the circumferential position of the rotation sensor 83 with respect to the sensor magnet 36. At this time, in the present embodiment, the circumference of the rotation sensor 83 is within the range in which the crimping portion 23b can be inserted into the first housing recess 68d and the first fixing claws 123c, 123d can be inserted into the second housing recess 168e. The direction position, that is, the circumferential position of the bus bar holder 60a is determined.

  Further, in the present embodiment, the circumferential position of the rotation sensor 83, that is, the bus bar, is selected from the positions where any one of the fixed claws 123g is in the circumferential position with any of the fixed recesses 168j within the above range. The circumferential position of the holder 60a is selected. Specifically, in the present embodiment, a position where the circumferential positions of the first fixed claw 123c and the first fixed recess 168g match, and a position where the circumferential positions of the first fixed claw 123d and the first fixed recess 168h match, The position in the circumferential direction of the rotation sensor 83 is selected from the three positions of the second fixed claw 123f and the position where the second fixed recess 168i is aligned in the circumferential direction.

  Here, according to this embodiment, the base parts 23a and 123a are arrange | positioned between the circumferential directions of a pair of 1st wall part 68a. Therefore, if the bus bar holder 60a is moved to a position where the caulking portion 23b cannot be inserted into the first receiving recess 68d or a position where the first fixing claws 123c, 123d cannot be inserted into the second receiving recess 168e, the first wall portion The base portions 23a and 123a come into contact with 68a. Thereby, it is suppressed that the bus bar holder 60a is excessively moved with respect to the housing 20. Therefore, the caulking portion 23b can be accommodated in the first accommodation recess 68d, and the first fixing claws 123c and 123d can be accommodated in the second accommodation recess 168e. Thereby, the bus bar holder 60a can be suitably fixed by the crimping portion 23b and the first fixing claws 123c and 123d. Moreover, it can suppress that load is added to the connection part of the bus-bar 81 and the coil 45 excessively.

  Moreover, according to this embodiment, the fitting part 62 fitted by the 1st opening part 20a is provided. Therefore, the bus bar holder 60a can be stably rotated about the central axis J in the position adjustment step S2. Therefore, adjustment of the circumferential position of the rotation sensor 83 is easy.

  The fixing step S3 is a step of fixing the bus bar holder 60a to the housing 20. In the fixing step S3, an operator or the like caulks the upper portion of the first claw portion 23 to form the caulking portion 23b, and the second flange portion 67 is clamped in the axial direction Z by the caulking portion 23b and the first flange portion 22. .

  Further, as shown in FIG. 6, an operator or the like caulks the upper portion of the second claw portion 123 to form a caulking portion 123 b, and the second flange portion 67 is pivoted by the caulking portion 123 b and the first flange portion 22. Clamp in direction Z. And the fixed claw 123g arrange | positioned in the position where the fixed recessed part 168j and the circumferential direction position corresponded in the fixed claw 123g is squeezed downward, and is inserted in the fixed recessed part 168j. That is, in the fixing step S3, an operator or the like caulks one of the plurality of fixing claws 123g downward and inserts it into the fixing recess 168j. In the example of FIGS. 5 and 6, the operator or the like caulks the second fixing claw 123 f downward and inserts it into the second fixing recess 168 i. Thereby, the bus bar unit 60 can be firmly fixed to the housing 20 in the circumferential direction at the circumferential position adjusted in the position adjusting step S2.

  In the fixing step S3, either the caulking work of the first claw part 23 or the caulking work of the second claw part 123 may be performed first. Further, of the caulking work of the second claw part 123, the work of caulking the fixed claw 123g is after the work of caulking the upper part of the second claw part 123 to make the caulking part 123b. 23 may be performed after the caulking work of 23, or may be performed before the caulking work of the first claw portion 23.

  5 and 6, the second fixing claw 123f is caulked and inserted into the second fixing recess 168i. However, the present invention is not limited to this. Depending on the circumferential position of the bus bar holder 60a adjusted in the position adjustment step S2, as shown in FIG. 9, the first fixing claw 123c may be crimped and inserted into the first fixing recess 168g. In this case, the 2nd nail | claw part 123 is arrange | positioned in the position which approached the circumferential direction one side with respect to the crimping | crimped fixing | fixed part 168. Further, the first fixed claw 123d and the second fixed claw 123f are disposed at positions shifted in the circumferential direction from the first fixed recess 168h and the second fixed recess 168i, respectively. In the crimped state, the first fixed claw 123c has a shape that linearly extends downward as indicated by a two-dot chain line in FIG. 7, for example. When caulking the first fixed claw 123c, an operator or the like pushes and folds the portion protruding radially inward at the lower end of the first fixed claw 123c from the upper side to the lower side.

  In the present specification, the “workers and the like” includes an operator who assembles the motor 10, an assembly device that assembles the motor 10, and the like. The assembly of the motor 10 may be performed only by the worker, may be performed only by the assembly device, or may be performed by the worker and the assembly device.

  Further, in the bus bar unit 60, the work of holding the circuit board 80 and the rotation sensor 83 on the bus bar holder 60a may be performed after the placement step S1 as long as it is before the position adjustment step S2, or before the placement step S1. You may go to Further, the operation of fixing the lid portion 69 to the bus bar holder main body 61 may be performed after the arrangement step S1 as long as the circuit board 80 and the rotation sensor 83 are held on the bus bar holder 60a, or the arrangement step S1. You may go before. The operation of fixing the lid 69 to the bus bar holder main body 61 may be performed after the fixing step S3.

  The present invention is not limited to the above-described embodiment, and other configurations can be employed. The number of fixed claws and the number of fixed recesses are not particularly limited as long as the number is two or more. The number of fixed claws and the number of fixed recesses may be different from each other. The number of first fixed claws may be one, or may be three or more. The number of the second fixed claws may be two or more. Moreover, the fixed nail | claw arrange | positioned in the radial position between the radial direction position of a 1st fixed claw and the radial direction position of a 2nd fixed claw may be provided. Further, the fixed claws may be only a plurality of first fixed claws or only a plurality of second fixed claws. The shape of the fixed recess is not particularly limited as long as the inserted fixing claw comes into contact with the portions on both sides in the circumferential direction of the inner surface of the fixed recess.

  The circumferential distance between the fixed claws is not particularly limited as long as it is different from the circumferential distance between the fixed recesses. For example, in the above-described embodiment, the circumferential distance between the second fixed claw 123f and the first fixed claw 123c and the circumferential distance between the second fixed claw 123f and the first fixed claw 123d are as follows. May be different from each other. In the above-described embodiment, the number of the fixing recesses into which one fixing claw can be inserted is one, but the present invention is not limited to this. For example, one fixed claw may be insertable into any of a plurality of fixed recesses depending on the circumferential position of the rotation sensor.

  A plurality of caulking fixing portions and a plurality of second claw portions may be provided. For example, in the above-described embodiment, at least one of the caulking accommodating portions 68 may be the caulking fixing portion 168, and at least one of the first claw portions 23 may be the second claw portion 123.

  The lid may be welded to the bus bar holder main body by a method other than laser irradiation, or may be fixed to the bus bar holder main body by a method other than welding. The lid portion may be welded to the valve bar holder main body by, for example, ultrasonic welding, high frequency welding, induction welding, or the like. The detected part and the rotation sensor are not particularly limited as long as the detected part can be detected by the rotation sensor and the rotation of the rotor can be detected. For example, the rotation sensor may be an optical sensor. The detected part may be a resolver rotor, and the rotation sensor may be a resolver stator. The O-ring may not be provided.

  The application of the motor of the above-described embodiment is not particularly limited. Moreover, each said structure can be suitably combined in the range which does not mutually contradict.

  DESCRIPTION OF SYMBOLS 10 ... Motor, 20 ... Housing, 20a ... 1st opening part, 21 ... Housing main body, 22 ... 1st flange part, 30 ... Rotor, 31 ... Shaft, 36 ... Sensor magnet (detected part), 40 ... Stator, 60a ... Bus bar holder, 61 ... Bus bar holder body, 67 ... Second flange part, 67a ... Second flange part body, 68a ... First wall part, 81 ... Bus bar, 83 ... Rotation sensor, 123 ... Second claw part (claw part) ), 123a ... base, 123b ... caulking part, 123c, 123d ... first fixing claw, 123e ... through hole, 123f ... second fixing claw, 123g ... fixing claw, 123h ... caulking part body, 168e ... second receiving recess ( (Accommodating recess) 168g, 168h: first fixing recess, 168i: second fixing recess, 168j: fixing recess, J: central axis, S2: position adjusting step, S3: fixing step Z ... axial direction

Claims (7)

A rotor having a shaft and a detected part arranged along the central axis;
A stator disposed on the radially outer side of the rotor;
A housing that houses the rotor and the stator and has a first opening that opens to one axial side;
A bus bar holder made of resin that is disposed on one side in the axial direction of the stator and closes the first opening;
A bus bar held by the bus bar holder and electrically connected to the stator;
A rotation sensor that is directly or indirectly held by the bus bar holder and capable of detecting the rotation of the rotor by detecting the detected portion;
With
The housing is
A cylindrical housing body extending in the axial direction;
A first flange portion projecting radially outward from an end portion on one axial side of the housing body;
A claw portion connected to the first flange portion;
Have
The nail portion is
A base extending from the first flange portion to one axial side;
A crimping portion extending radially inward from an end portion on one axial side of the base portion;
Have
The bus bar holder is
A bus bar holder body disposed on one axial side of the first opening;
A second flange portion projecting radially outward from the bus bar holder main body, and contacting a surface on one axial side of the first flange portion;
Have
The caulking part is
A caulking body that contacts the second flange from one axial side;
A plurality of fixing claws provided in the caulking portion main body and having different circumferential positions;
Have
The second flange portion has a plurality of fixed recesses recessed on the other side in the axial direction,
The plurality of fixed recesses have different circumferential positions from each other,
The circumferential distance between the plurality of fixed recesses and the circumferential distance between the plurality of fixed claws are different from each other,
One of the fixed claws is squeezed on the other side in the axial direction and inserted into one of the fixed recesses, and contacts a part on both sides in the circumferential direction of the inner surface of the fixed recess . The caulking part is used as the fixing claw,
A first fixed claw connected to the radially inner end of the caulking part body;
A second fixed claw positioned radially outward from the first fixed claw;
Have
The second flange portion as the fixed recess,
A first fixing recess having a radial position that is the same as the first fixing claw;
A second fixed recess having a radial position that is the same as the second fixed claw;
The motor according to claim 1, comprising: A plurality of the first fixed claws are arranged at intervals in the circumferential direction,
The motor according to claim 2, wherein the second fixed claws are located between the adjacent first fixed claws in the circumferential direction. The second flange portion has a housing recess recessed on the other side in the axial direction,
The first fixed recess is recessed from the bottom surface of the housing recess to the other side in the axial direction,
The first fixed claw extends from the radially inner end of the caulking part main body to the other side in the axial direction and is inserted into the accommodating recess.
4. The motor according to claim 3, wherein among the plurality of first fixed claws, a first fixed claw positioned outside the fixed concave portion is in contact with a bottom surface of the accommodating concave portion. The caulking part main body has a through-hole penetrating the caulking part main body in the axial direction,
5. The motor according to claim 2, wherein the second fixed claw extends radially inward from a radially outer portion of an inner surface of the through hole. The second flange portion is
A second flange body extending in the circumferential direction;
A pair of first wall portions protruding radially outward from the second flange portion main body and spaced apart from each other in the circumferential direction;
Have
6. The motor according to claim 1, wherein the base portion is disposed between circumferential directions of the pair of first wall portions. A method for manufacturing the motor according to claim 1, comprising:
A position adjusting step of adjusting the circumferential position of the rotation sensor with respect to the detected portion by moving the bus bar holder in the circumferential direction with respect to the housing;
A fixing step of fixing the bus bar holder to the housing;
Including
In the fixing step, one of the plurality of fixing claws is caulked to the other side in the axial direction and inserted into the fixing recess.

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