JP2019135888A - Manufacturing method for motor, and motor - Google Patents

Abstract

To provide a manufacturing method for a motor capable of improving sealability between a first housing and a second housing.SOLUTION: A manufacturing method for a motor provided with a housing comprising a first housing, and a second housing fixed to the first housing by bringing an edge portion of a second opening into contact with an edge portion of a first opening 21a, comprises: a liquid gasket part formation step of forming a liquid gasket part arranged in at least a part of a portion including the edge portion of the first opening 21a by coating a liquid gasket; and an attachment step of attaching the second housing onto the first housing by causing the edge portion of the first opening 21a and the edge portion of the second opening to bring into contact with each other via the liquid gasket part. The liquid gasket part has a shape where a part of an annular shape in a circumferential direction is partitioned via an air gap portion. In the attachment step, the liquid gasket part is pushed and expanded; and portions partitioned via the air gap portion, out of the liquid gasket part are connected to each other to form a first annular gasket part having the annular shape in the circumferential direction.SELECTED DRAWING: Figure 9

Description

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

  There is known a motor including a casing formed by fixing two separate members to each other. For example, Patent Literature 1 describes a casing including a casing body and a bracket.

JP 2013-211978 A

  In the motor as described above, a gasket portion for sealing between the casing body and the bracket may be provided for the purpose of waterproofing. In this case, a liquid gasket is annularly applied to the mating surface of the casing main body or the bracket, and the casing main body and the bracket are aligned and fixed via the liquid gasket. Thereby, a gasket part is made because a liquid gasket hardens.

  However, in the above case, when the casing body and the bracket are combined, the air inside the casing may pass through the liquid gasket and escape to the outside. Therefore, a part of the liquid gasket spreads thinly due to air, and there may be a case where the gap between the casing body and the bracket cannot be sufficiently sealed.

  In view of the above circumstances, the present invention is a method for manufacturing a motor in which a liquid gasket is applied to form a gasket portion, and the motor can be improved in sealing performance between a first housing and a second housing. One of the purposes is to provide a method. Another object of the present invention is to provide a motor having a structure capable of improving the sealing performance between the first housing and the second housing by the gasket portion made of a liquid gasket.

  One aspect of the method for manufacturing a motor of the present invention includes a rotor having a shaft disposed along a central axis, a stator disposed radially outside the rotor, and housing the rotor and the stator therein. A housing, wherein the housing is a cylindrical first housing having a first opening that opens on one side in the axial direction, and a cylindrical shape that has a second opening that opens on the other side in the axial direction, And a second housing fixed to the first housing by contacting an edge of the second opening on one side in the axial direction of the first housing. A liquid gasket part forming step of applying a liquid gasket and forming a liquid gasket part disposed at a part including at least a part of the edge of the first opening; Parts and the edge of the second opening portion in contact through the liquid gasket portion includes a mounting step of mounting said second housing to said first housing. The liquid gasket portion has a shape in which an annular part along the circumferential direction is divided via a gap. In the mounting step, the liquid gasket portion is expanded to connect the portions of the liquid gasket portion that are separated via the gap, thereby forming a first annular annular annular portion along the circumferential direction. .

  One aspect of the motor of the present invention includes a rotor having a shaft disposed along a central axis, a stator disposed on the radially outer side of the rotor, a housing that accommodates the rotor and the stator therein, Is provided. The housing has a cylindrical first housing having a first opening that opens on one side in the axial direction, and a cylindrical shape that has a second opening that opens on the other side in the axial direction, and the axial direction of the first housing On one side, an edge of the second opening has a second housing that contacts the edge of the first opening and is fixed to the first housing. The edge part of the said 1st opening part and the edge part of the said 2nd opening part contact via the cyclic | annular 1st annular gasket part along the circumferential direction. The first annular gasket portion is made of a liquid gasket and has a portion where the radial dimension increases in a part of the circumferential direction or a portion where the radial dimension decreases in a part of the circumferential direction.

  According to one aspect of the present invention, a method for manufacturing a motor in which a liquid gasket is applied to form a gasket portion, the motor manufacturing capable of improving the sealing performance between the first housing and the second housing. A method and a motor having a structure capable of improving the sealing performance between the first housing and the second housing by the gasket portion made of a liquid gasket are provided.

FIG. 1 is a perspective view showing the motor of this embodiment. FIG. 2 is a cross-sectional view showing the motor of this embodiment, and is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a view of the motor of this embodiment as viewed from above. 4 is a cross-sectional 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 cross-sectional view showing a part of the motor of this embodiment, and is a partially enlarged view of FIG. FIG. 6 is a cross-sectional view showing a part of the motor of this embodiment, and is a partially enlarged view of FIG. FIG. 7 is a flowchart showing a procedure in the method for manufacturing the motor of the present embodiment. FIG. 8 is a diagram showing a first application process of the present embodiment. FIG. 9 is a diagram showing a second application process of the present embodiment. FIG. 10 is a diagram showing a second application process of the present embodiment. FIG. 11 is a diagram illustrating a second coating process which is another example of the present embodiment. FIG. 12 is a view of a part of a motor, which is another example of the present embodiment, 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 FIGS. 1 to 4, 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, a first seal member 71, and a second seal member. A seal member 72 and an oil seal 73 are provided. As shown in FIG. 2, the housing 20 accommodates the rotor 30 and the stator 40 therein. The housing 20 includes a first housing 21 and a second housing 22. In addition, illustration of the 2nd housing 22 is abbreviate | omitted in FIG.

  As shown in FIG. 2, the first housing 21 has a cylindrical shape having a first opening 21 a that opens upward. The first housing 21 has a multistage cylindrical shape centered on the central axis J. The first housing 21 includes a first housing cylinder portion 23 and a first flange portion 24. The first housing tube portion 23 includes a stator holding portion 23a, a bus bar holder holding portion 23b, a bearing holding portion 23c, and an oil seal holding portion 23d. 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 23a.

  The bus bar holder holding part 23b is connected to the upper end of the stator holding part 23a. The inner diameter and outer diameter of the bus bar holder holding portion 23b are larger than the inner diameter and outer diameter of the stator holding portion 23a. The upper end portion of the bus bar holder holding portion 23b is the upper end portion of the first housing tube portion 23 and is the first opening portion 21a. The bus bar holder holding portion 23b holds a lower portion of the bus bar holder 61 described later.

  The bearing holding portion 23c is connected to the lower end portion of the stator holding portion 23a. The inner diameter and outer diameter of the bearing holding portion 23c are smaller than the inner diameter and outer diameter of the stator holding portion 23a. A bearing 33 is held inside the bearing holding portion 23c. The oil seal holding part 23d is connected to the lower end of the bearing holding part 23c. The inner diameter and outer diameter of the oil seal holding portion 23d are smaller than the inner diameter and outer diameter of the bearing holding portion 23c. The oil seal holding part 23d opens downward. An oil seal 73 is held inside the oil seal holding portion 23d.

  The first flange portion 24 protrudes radially outward from the upper end portion of the first housing tube portion 23. The first flange portion 24 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. 3, the first flange portion 24 has a first attachment portion 24 a that protrudes radially outward. In the present embodiment, three first attachment portions 24a are provided along the circumferential direction.

  As shown in FIG. 2, the second housing 22 has a cylindrical shape having a second opening 22 a that opens downward. The second housing 22 includes a second housing body 25, a protruding portion 26, and a second flange portion 27. The second housing body 25 has a substantially cylindrical shape centered on the central axis J and having a lid on the upper side. The lid portion of the second housing body 25 has a plate shape whose plate surface faces the axial direction Z. As shown in FIG. 1, the lid portion of the second housing body 25 has an annular portion 25a and a central portion 25b. The annular portion 25a is a substantially annular shape centered on the central axis J. The central portion 25b has a substantially disk shape connected to the radially inner edge of the annular portion 25a. The center part 25b protrudes above the annular part 25a. The cylindrical portion 25c of the second housing body 25 extends downward from the radially outer edge portion of the annular portion 25a.

  The protruding portion 26 protrudes radially outward from the second housing body 25. The direction in which the protruding portion 26 protrudes is a direction parallel to the X-axis direction. In the following description, a direction in which the protruding portion 26 protrudes, that is, a direction parallel to the X-axis direction is referred to as a “projection direction X”. A direction orthogonal to the axial direction Z and the protruding direction X, that is, a direction parallel to the Y-axis direction is referred to as a “width direction Y”. The protrusion 26 opens outward in the radial direction. The protruding portion 26 includes an upper wall portion 26a and a pair of side wall portions 26b.

  The upper wall portion 26a extends radially outward from the annular portion 25a. The upper wall portion 26a has a plate shape whose plate surface faces the axial direction Z. The upper wall portion 26 a has a rectangular shape that is long in the width direction Y when viewed along the axial direction Z. The pair of side wall portions 26b extends radially outward from the cylindrical portion 25c. The pair of side wall portions 26b has a plate shape whose plate surface is orthogonal to the plate surface of the upper wall portion 26a. The upper end portions of the pair of side wall portions 26b are respectively connected to the end portions on both sides in the circumferential direction of the upper wall portion 26a.

  The lid portion of the second housing body 25, that is, the annular portion 25a and the central portion 25b, and the upper wall portion 26a of the protruding portion 26 constitute the second housing lid portion 22b. That is, the second housing 22 has a second housing lid portion 22b. As shown in FIG. 2, the second housing lid portion 22 b covers the upper side of the stator 40 and the upper side of the rotor 30.

  As shown in FIG. 1, the second housing cylindrical portion 22 c is configured by the cylindrical portion 25 c of the second housing body 25 and the pair of side wall portions 26 b of the protruding portion 26. That is, the 2nd housing 22 has the 2nd housing cylinder part 22c. The 2nd housing cylinder part 22c is a cylinder shape extended below from the radial direction outer edge part of the 2nd housing cover part 22b. Since the protruding portion 26 opens radially outward, a part of the second housing cylinder portion 22c in the circumferential direction opens radially outward.

  The second flange portion 27 protrudes radially outward from the lower end portion of the second housing tube portion 22c. The second flange portion 27 has a plate shape whose plate surface faces the axial direction Z, and extends in the circumferential direction. Viewed along the axial direction Z, the second flange portion 27 has a C-shape that opens to the side in which the protruding portion 26 protrudes in the protruding direction X. End portions on both sides in the circumferential direction of the second flange portion 27 are connected to the pair of side wall portions 26b. The second flange portion 27 has a second attachment portion 27a that protrudes radially outward. In the present embodiment, three second attachment portions 27a are provided along the circumferential direction.

  As shown in FIG. 1 and FIG. 2, the second housing 22 has an edge of the second opening 22 a in contact with the edge of the first opening 21 a on the upper side of the first housing 21. Fixed. The edge of the first opening 21 a includes the upper surface of the first flange portion 24. The edge of the second opening 22 a includes the lower surface of the second flange portion 27. The upper surface of the first flange portion 24 and the lower surface of the second flange portion 27 are in contact with each other. The upper surface of each first mounting portion 24a and the lower surface of each second mounting portion 27a are in contact with each other. A part of the first mounting portion 24a and the second mounting portion 27a is fixed in a state where the first mounting portion 24a and the second mounting portion 27a are overlapped in the axial direction Z. Thereby, the 1st housing 21 and the 2nd housing 22 are fixed. In addition, the 1st attaching part 24a and the 2nd attaching part 27a are not restricted to crimping, You may be fixed by another method.

  As shown in FIGS. 2 and 4, the housing 20 has a through hole 20 a that penetrates the wall portion of the housing 20 in the radial direction. The inner surface of the through hole 20 a is constituted by the inner surface of the protruding portion 26 and the upper surface of the first flange portion 24. The through hole 20a has a rectangular shape that is long in the width direction Y when viewed along the protruding direction X.

  As shown in FIG. 2, the rotor 30 includes a shaft 31 and a rotor body 32. 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. A sensor magnet 36 is attached to an upper end portion of the shaft 31 via an attachment member 35. 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 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 23a. 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 61, bus bars 81 and 82, and a circuit board 80. That is, the motor 10 includes a bus bar holder 61, a circuit board 80, and bus bars 81 and 82. The bus bar holder 61 is a member that holds the bus bars 81 and 82. The bus bar holder 61 is disposed on the upper side of the stator 40. The bus bar holder 61 is made of resin, for example. As shown in FIGS. 2 and 3, the bus bar holder 61 includes a bus bar holder main body 62, a connector part 63, a bearing holding part 64, a connecting part 65, and a support part 66.

  The bus bar holder main body 62 has a substantially cylindrical shape centered on the central axis J. As shown in FIG. 2, the bus bar holder main body 62 is disposed inside the housing 20. The lower part of the bus bar holder main body 62 is accommodated in the first housing 21. More specifically, the lower portion of the bus bar holder main body 62 is fitted and held inside the bus bar holder holding portion 23b. The bus bar holder main body 62 is supported from below by the core back 42. A stepped portion 61b whose outer diameter decreases toward the lower side is provided at the lower end of the outer peripheral surface of the bus bar holder main body 62.

  The upper part of the bus bar holder main body 62 is accommodated in the second housing 22. The upper surface of the bus bar holder main body 62 is disposed to face the lower surface of the annular portion 25a in the axial direction Z. The bus bar holder main body 62 has a groove 61 a that is recessed downward from the upper surface of the bus bar holder main body 62. As shown in FIG. 3, the groove 61 a has a substantially annular shape with the central axis J as the center.

  The connector part 63 extends radially outward from the bus bar holder body 62. More specifically, the connector portion 63 extends in the protruding direction X from the bus bar holder main body 62. As shown in FIG. 2, the connector part 63 protrudes outside the housing 20 through the through hole 20a. 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. In addition, in FIG. 4, the connector part 63 is simplified and shown.

  As shown in FIG. 2, the bearing holding portion 64 is disposed on the radially inner side of the bus bar holder main body 62. 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. 3, the bearing holding portion 64 is connected to the bus bar holder main body 62 via the connecting portion 65.

  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 a support portion 66 that protrudes upward from the bearing holding portion 64. As shown in FIG. 2, the circuit board 80 is accommodated in the second housing 22. A rotation sensor (not shown) is attached to the lower surface of the circuit board 80. The rotation sensor is a magnetic sensor. The rotation sensor is disposed on the upper side of the sensor magnet 36 so as to face the gap with a gap. The rotation sensor detects the magnetic field of the sensor magnet 36 and detects the rotation of the rotor 30.

  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.

  In the present embodiment, the first seal member 71 and the second seal member 72 are annular O-rings extending along the circumferential direction. The first seal member 71 is disposed on the lower part of the radially outer surface of the bus bar holder 61. More specifically, the first seal member 71 is fitted and held from the radially outer side to the lower end of the bus bar holder main body 62. The first seal member 71 is disposed in the step portion 61b. The first seal member 71 is in contact with the stepped surface facing the lower side of the stepped portion 61b. The first seal member 71 seals between the radially inner side surface of the first housing 21 and the radially outer side surface of the bus bar holder 61. More specifically, the first seal member 71 is in contact with the inner peripheral surface of the bus bar holder holding portion 23b and the outer peripheral surface of the bus bar holder main body 62, so that the inner peripheral surface of the bus bar holder holding portion 23b and the bus bar holder main body 62 are Sealing between the outer peripheral surface.

  The first seal member 71 is in a state of being elastically compressed and deformed in the radial direction. The first seal member 71 applies a radially inward elastic force to the bus bar holder 61. Thereby, it can suppress that the bus-bar holder 61 moves to radial direction, and can arrange | position the bus-bar holder 61 with sufficient position accuracy in radial direction. Therefore, the bearing 34 held by the bus bar holder 61 can also be arranged with high positional accuracy in the radial direction, and the shaft 31 can be arranged with high axial accuracy.

  The second seal member 72 is disposed on the upper surface of the bus bar holder 61. The second seal member 72 is fitted and held in the groove 61a. The second seal member 72 seals between the lower surface of the second housing lid portion 22 b and the upper surface of the bus bar holder 61. More specifically, the second seal member 72 contacts the lower surface of the annular portion 25a and the upper surface of the bus bar holder main body 62, and the lower surface of the annular portion 25a and the upper surface of the bus bar holder main body 62 are in contact with each other. Seal between the surfaces. The second seal member 72 is in a state of being elastically compressed and deformed in the axial direction Z. The second seal member 72 applies a downward elastic force to the bus bar holder 61. Thereby, it is possible to suppress the bus bar holder 61 from moving in the axial direction Z in the housing 20.

  As shown in FIG. 3, in the present embodiment, the motor 10 further includes a gasket portion 50. The gasket portion 50 seals between the first housing 21 and the second housing 22. The gasket part 50 includes a first annular gasket part 51 and a second annular gasket part 52.

  The first annular gasket portion 51 has an annular shape along the circumferential direction. The first annular gasket portion 51 is disposed on the radially outer side than the first seal member 71 and the second seal member 72. The first annular gasket portion 51 includes a first portion 51a, a second portion 51b, and a pair of third portions 51c.

  As shown in FIG. 5, the first portion 51 a is a portion disposed between the edge portion of the first opening portion 21 a and the edge portion of the second opening portion 22 a in the axial direction Z. The first portion 51 a contacts the upper surface of the first flange portion 24 and the lower surface of the second flange portion 27 and is sandwiched in the axial direction Z. Thereby, the edge part of the 1st opening part 21a and the edge part of the 2nd opening part 22a contact via the 1st annular gasket part 51. FIG. The first portion 51 a seals between the upper surface of the first flange portion 24 and the lower surface of the second flange portion 27. As shown in FIG. 3, the first portion 51 a has a C shape that is open along the axial direction Z on the side in which the protruding portion 26 protrudes in the protruding direction X.

  As shown in FIGS. 4 and 6, the second portion 51 b is a portion disposed between the upper surface of the connector portion 63 and the axial direction Z between the second housing 22. The second portion 51b is sandwiched in the axial direction Z by contacting the upper surface of the connector portion 63 and the lower surface of the upper wall portion 26a of the second housing lid portion 22b. The second portion 51b seals between the upper surface of the connector portion 63 and the lower surface of the upper wall portion 26a. As shown in FIG. 3, the second portion 51b extends along the circumferential direction as a whole. The second portion 51b is disposed so as to protrude radially outward from a fourth portion 52a described later.

  The second portion 51b has a pair of first straight portions 51d and a second straight portion 51e. The pair of first straight portions 51d is inclined from the both ends in the width direction Y of the upper surface of the connector portion 63 toward the other first straight portion 51d side in the width direction Y toward the radially outer side. It is a part extending in a straight line. The second straight part 51e is a part extending linearly in the width direction Y. Both end portions in the width direction Y of the second straight portion 51e are respectively connected to ends on the radially outer side of the first straight portion 51d. Note that the first straight portion 51d and the second straight portion 51e are not necessarily linear as long as they extend in the above-described directions, and may be curved or bent.

  The second straight part 51e has a wide part 51f. The wide portion 51f is a portion where the width of the first annular gasket portion 51 is increased. That is, the first annular gasket portion 51 has a portion where the radial dimension is increased in a part of the circumferential direction. The wide portion 51f protrudes radially inward and radially outward from the portions of the first annular gasket portion 51 on both sides of the wide portion 51f. The dimension in the radial direction of the wide portion 51f is larger than the dimension in the radial direction in the portion of the first annular gasket portion 51 other than the wide portion 51f. The wide portion 51 f is disposed at a position shifted to one side from the center in the width direction Y of the connector portion 63. The wide portion 51f is substantially circular when viewed along the axial direction Z.

  As shown in FIG. 4, the pair of third portions 51 c are portions disposed between the both side surfaces in the width direction Y of the connector portion 63 and the inner surface of the side wall portion 26 b. The third portion 51 c extends in the axial direction Z. The upper end portion of the third portion 51c is connected to each of the end portions on both sides in the circumferential direction of the second portion 51b. The lower end portion of the third portion 51c is connected to each of the end portions on both sides in the circumferential direction of the first portion 51a. The third portion 51c connects the first portion 51a and the second portion 51b.

  The second annular gasket portion 52 is an annular shape that surrounds the connector portion 63 when viewed along the protruding direction X in which the connector portion 63 extends. The second annular gasket portion 52 is disposed between the inner surface of the through hole 20 a and the outer surface of the connector portion 63 as viewed along the protruding direction X. The second annular gasket portion 52 is sandwiched in contact with the inner side surface of the through-hole 20a and both side surfaces in the axial direction Z of the connector portion 63 and both side surfaces in the width direction Y of the connector portion 63. Thereby, the space between the inner side surface of the through hole 20 a and the outer side surface of the connector portion 63 can be sealed by the second annular gasket portion 52.

  The second annular gasket portion 52 includes a second portion 51b and a third portion 51c of the first annular gasket portion 51, and a fourth portion 52a. That is, a part of the second annular gasket part 52 is constituted by a part of the first annular gasket part 51. Therefore, the total area where the gasket part 50 is arrange | positioned can be made small, and preparation of the gasket part 50 can be made easy.

  The fourth portion 52 a is disposed between the axial direction Z between the upper surface of the first flange portion 24 and the lower surface of the connector portion 63. The fourth portion 52 a is sandwiched between the upper surface of the first flange portion 24 and the lower surface of the connector portion 63. The fourth portion 52 a seals between the upper surface of the first flange portion 24 and the lower surface of the connector portion 63. As shown in FIG. 3, the fourth portion 52 a extends in an arc shape along the circumferential direction. The ends on both sides in the circumferential direction of the fourth portion 52a are connected to the ends on both sides in the circumferential direction of the first portion 51a.

  The gasket portion 50 is made of a liquid gasket. That is, the first annular gasket portion 51 and the second annular gasket portion 52 are made of a liquid gasket. In this specification, “a certain object is made of a liquid gasket” is only required to be made by applying a liquid gasket to a certain object, and a certain object may be entirely cured. , Some or all may remain uncured. The gasket portion 50, that is, the first annular gasket portion 51 and the second annular gasket portion 52 are portions made by curing a liquid gasket. The kind of liquid gasket is not particularly limited. The liquid gasket may be, for example, an anaerobic type, a moisture curable type, an ultraviolet curable type, or a two-component mixed type in which two types of liquid agents are mixed.

  As shown in FIG. 7, the manufacturing method of the motor 10 of the present embodiment includes a first arrangement step S1, a first application step S2, a second arrangement step S3, a second application step S4, and an attachment step S5. ,including. The first arrangement step S <b> 1 is a step of arranging the rotor 30 and the stator 40 inside the first housing 21. An operator, an assembly device, or the like (hereinafter referred to as an operator or the like) inserts the rotor 30 and the stator 40 into the first housing 21 from the upper side of the first housing 21 through the first opening 21a. At this time, the worker or the like fixes the stator 40 inside the first housing 21 by, for example, press-fitting the stator core 41 into the stator holding portion 23a.

  In the first application step S2, before the second arrangement step S3, a liquid gasket is applied along the circumferential direction to a portion of the edge portion of the first opening 21a that is disposed below the connector portion 63. It is a coating process. As shown in FIG. 8, in the first application step S <b> 2, workers etc. apply a liquid gasket to the radially inner edge of the portion of the first flange portion 24 that is disposed below the connector portion 63. First liquid gasket portion 91 is formed. When viewed from the axial direction Z, the first liquid gasket portion 91 has a substantially arc shape extending in the circumferential direction. The first liquid gasket portion 91 is a liquid portion that hardens to become the fourth portion 52a. The radial dimension of the first liquid gasket portion 91 is smaller than the radial dimension of the fourth portion 52a. End portions on both sides in the circumferential direction of the first liquid gasket portion 91 protrude on both sides in the circumferential direction from a portion of the first flange portion 24 disposed below the connector portion 63. In addition, the 1st liquid gasket part 91 does not necessarily need to be circular arc shape, and should just be the shape extended in the circumferential direction.

  The second arrangement step S3 is a step of arranging the bus bar holder 61 on the upper side of the stator 40. An operator or the like fits the lower portion of the bus bar unit 60 into the first housing 21 through the first opening 21 a and brings the bus bar holder main body 62 into contact with the upper surface of the core back 42. At this time, the first seal member 71 is attached to the bus bar holder main body 62 in advance. Accordingly, the first seal member 71 can be disposed between the radially outer side surface of the bus bar holder main body 62 and the inner side surface of the first housing 21 by fitting the bus bar holder main body 62 into the first housing 21. In this way, in the second arrangement step S3, an operator or the like fits the lower part of the bus bar holder 61 into the first housing 21 and the first seal member 71 causes the first housing 21 to move inward in the radial direction. The space between the side surface and the radially outer side surface of the bus bar holder 61 is sealed.

  As shown in FIG. 9, in the second application step S4, a liquid gasket is applied to form a second liquid gasket portion 92 that is disposed at a portion at least partially including the edge of the first opening 21a. It is. In the present embodiment, the second application step S4 corresponds to a liquid gasket portion forming step, and the second liquid gasket portion 92 corresponds to a liquid gasket portion formed in the liquid gasket portion forming step.

  The second liquid gasket portion 92 includes a first portion 92a, a second portion 92b, and a third portion 92c. The first portion 92a is a liquid portion that hardens to become the first portion 51a. The second portion 92b is a liquid portion that is cured to become the second portion 51b. The third portion 92c is a liquid portion that is cured to become the third portion 51c.

  The first portion 92a has substantially the same shape as the first portion 51a except that the radial dimension is different. The radial dimension of the first portion 92a is smaller than the radial dimension of the first portion 51a. As shown in FIG. 10, the third portion 92 c extends in the axial direction Z on the side surface in the width direction Y of the connector portion 63. The third portion 92c has substantially the same shape as the third portion 51c except that the dimension in the protruding direction X is different. The dimension of the third portion 92c in the protruding direction X is smaller than the dimension of the third portion 51c in the protruding direction X.

  As shown in FIGS. 9 and 10, the second portion 92 b has a first facing portion 93 and a second facing portion 94. That is, the second liquid gasket portion 92 includes a first facing portion 93 and a second facing portion 94. The 1st opposing part 93 and the 2nd opposing part 94 oppose the circumferential direction via the space | gap part G1. Therefore, the second liquid gasket portion 92 has a shape in which an annular part along the circumferential direction is divided via the gap portion G1. In this embodiment, the 1st opposing part 93 and the 2nd opposing part 94 oppose the width direction Y via the space | gap part G1. The gap G1 is disposed on the upper surface of the connector part 63. The gap G <b> 1 is disposed on the upper surface of the connector portion 63 at a position shifted to one side from the center in the width direction Y.

  The 1st opposing part 93 has the 1st linear part 93a and the 2nd linear part 93b. The first straight portion 93a is a portion that extends linearly from the upper end portion of the third portion 92c on the one side in the circumferential direction in a direction inclined toward the radially outer side toward the other side in the circumferential direction. The second straight portion 93b is a portion that extends linearly in the width direction Y from the tip of the first straight portion 93a. In addition, the 1st linear part 93a and the 2nd linear part 93b do not necessarily need to be linear form, and may be curving or bending.

  The second facing portion 94 has a first straight portion 94a and a second straight portion 94b. The first straight portion 94a is a portion extending from the upper end portion of the third portion 92c on the other side in the circumferential direction in a direction that is inclined linearly toward the one side in the circumferential direction and is positioned radially outward. The second straight portion 94b is a portion that extends linearly in the width direction Y from the tip portion of the first straight portion 94a. The second straight portion 93b and the second straight portion 94b are disposed at the same position in the protruding direction X direction. The gap G1 is disposed between the tip of the second straight part 93b and the tip of the second straight part 94b. Note that the first straight portion 94a and the second straight portion 94b do not necessarily need to be linear as long as they extend in the above-described direction, and may be curved or bent.

  The first straight portions 93a and 94a are portions that are cured to become a pair of first straight portions 51d. The shapes of the first straight portions 93a and 94a are substantially the same as the shapes of the pair of first straight portions 51d except that the dimensions in the radial direction are different. The dimension in the radial direction of the first straight portions 93a and 94a is smaller than the dimension in the radial direction of the first straight portion 51d. The second straight portions 93b and 94b are portions that are cured to become the second straight portion 51e. The dimension in the radial direction of the second linear portions 93b and 94b is smaller than the dimension in the radial direction of the second linear portion 51e.

  In the second application step S4, an operator or the like forms a second liquid gasket portion 92 by applying a liquid gasket along the circumferential direction on at least the upper surface of the connector portion 63. In the present embodiment, in the second application step S4, an operator or the like starts from the upper surface of the connector portion 63, the side surface on one side in the width direction of the connector portion 63, the upper surface of the first flange portion 24, and the connector portion 63. The liquid gasket is continuously applied through the other side in the width direction in order until it returns to the upper surface of the connector part 63 again.

  When applying the liquid gasket to the upper surface of the connector part 63 again, the operator or the like ends the application of the liquid gasket just before the gasket first applied to the upper surface of the connector part 63. Thereby, the 2nd liquid gasket part 92 of the shape parted via the space | gap part G1 is formed. That is, in the second application step S4 of the present embodiment, workers and the like apply a liquid gasket to form the first portion 92a, the second portion 92b, and the third portion 92c, and the second liquid gasket portion 92 is formed. Form.

  In the present embodiment, since the first facing portion 93 and the second facing portion 94 are opposed to each other in the circumferential direction via the gap portion G1, the liquid gasket is applied along the circumferential direction as described above. The second liquid gasket portion 92 can be easily formed by completing the application just before connecting to the applied gasket. Therefore, the labor required for the second coating step S4 can be reduced.

  As shown in FIG. 9, the second liquid gasket portion 92 is disposed on the radially outer side than the second seal member 72. That is, in the second application step S <b> 4, an operator or the like forms the second liquid gasket portion 92 on the radially outer side than the second seal member 72. As shown in FIG. 10, both circumferential ends of the first portion 92a and the lower end of the third portion 92c formed in the second application step S4 are both circumferential ends of the first liquid gasket portion 91. Connected. That is, in the second application step S4, the workers or the like use both circumferential ends of the liquid gasket applied to the upper surface of the connector portion 63 as both circumferential ends of the liquid gasket applied in the first application step S2. Are connected to each other via a third portion 92c.

  The attachment step S5 is a step of attaching the second housing 22 to the first housing 21 by bringing the edge of the first opening 21a and the edge of the second opening 22a into contact with each other via the second liquid gasket portion 92. is there. An operator or the like brings the second housing 22 close to the first housing 21 from above and inserts the upper portion of the bus bar unit 60 into the second housing 22. In this way, the operator or the like brings the lower surface of the second flange portion 27 into contact with the upper surface of the first flange portion 24 via the second liquid gasket portion 92, and the second liquid gasket portion 92. The lower surface of the upper wall portion 26 a is brought into contact with the upper surface of the connector portion 63 through the connector.

  At this time, when the second housing 22 approaches the first housing 21, the second liquid gasket portion 92 applied to the first flange portion 24 and the connector portion 63 is crushed and pushed open by the second housing 22. Thereby, the 1st opposing part 93 and the 2nd opposing part 94 spread toward each other, and are connected. In this state, the applied gasket is cured, whereby the first annular gasket portion 51 is formed. Therefore, in the attaching step S5, the workers or the like press and spread the second liquid gasket portion 92, and the portions of the second liquid gasket portion 92 separated through the gap portion G1, that is, the first facing portion 93 and the first portion. The two opposing portions 94 are connected to each other, and an annular first annular gasket portion 51 is formed along the circumferential direction. The hardening of the liquid gasket occurs, for example, when a predetermined time elapses after the liquid gasket is applied.

  Here, when the first housing 21 and the second housing 22 come into contact with each other through the applied liquid gasket, the air inside the first housing 21 and the air inside the second housing 22 are discharged to the outside of the housing 20. May be. At this time, when air passes through the liquid gasket, the liquid gasket may be excessively thinly extended by the air. In this case, the thickness of the gasket becomes insufficient, and the gap between the first housing 21 and the second housing 22 may not be suitably sealed.

  On the other hand, according to the present embodiment, since the second liquid gasket portion 92 has a shape divided through the gap portion G1, the air that attempts to pass through the second liquid gasket portion 92 passes through the gap portion G1. It is discharged to the outside of the housing 20 through. Therefore, it can suppress that the liquid gasket which comprises the 2nd liquid gasket part 92 is extended too thinly with air. Moreover, by attaching the 2nd housing 22 to the 1st housing 21, a liquid gasket can be expanded and the space | gap part G1 can be lose | disappeared. Thereby, the cyclic | annular 1st annular gasket part 51 which has thickness required for sealing between the 1st housing 21 and the 2nd housing 22 over the whole can be formed.

  As described above, according to the present embodiment, the manufacturing method of the motor 10 in which the gasket portion 50 is formed by applying a liquid gasket, and the sealing performance between the first housing 21 and the second housing 22 is improved. A method for manufacturing the motor 10 can be obtained. Moreover, the motor 10 having a structure capable of improving the sealing performance between the first housing 21 and the second housing 22 by the liquid gasket portion 50 is obtained.

  In addition, according to the present embodiment, the bus bar holder 61 has the connector portion 63 that protrudes to the outside of the housing 20 through the through hole 20a. Then, in the attachment step S <b> 5, an operator or the like brings the second housing 22 into contact with the upper surface of the connector portion 63 via the second liquid gasket portion 92. Thereby, the second liquid gasket portion 92 can seal a part between the connector portion 63 and the inner surface of the through hole 20a. Therefore, even if the connector part 63 is provided, the sealing performance between the first housing 21 and the second housing 22 can be improved.

  Further, according to the present embodiment, the liquid applied to the upper surface of the connector part 63 in the second application step S4 is applied to both circumferential ends of the first liquid gasket portion 91 applied in the first application step S2. Connect the circumferential ends of the gasket. Thereby, the circumference | surroundings of the connector part 63 can be enclosed with a liquid gasket, and the motor 10 provided with the 2nd annular gasket part 52 can be obtained. Therefore, the space between the connector portion 63 and the inner surface of the through hole 20a can be sealed over the entire circumference. Therefore, the sealing performance between the first housing 21 and the second housing 22 can be further improved.

  Further, for example, when the gap G <b> 1 is disposed on the upper surface of the first flange portion 24, it is conceivable that the liquid gasket that has been spread in the attachment step S <b> 5 flows into the first housing 21. In this case, there is a possibility that the amount of the gasket in the portion divided by the gap portion G1 is reduced, and the portions divided by the gap portion G1 cannot be suitably connected.

  On the other hand, according to the present embodiment, the gap portion G1 is disposed on the upper surface of the connector portion 63. Therefore, it is possible to suppress the liquid gasket that has been spread out from flowing into the first housing 21. Thereby, it can suppress that the quantity of the gasket of the 1st opposing part 93 and the amount of the gasket of the 2nd opposing part 94 reduce, and when it is expanded, the 1st opposing part 93 and the 2nd opposing part 94 are suitable. Can be connected.

  The wide portion 51 f is configured by connecting the first facing portion 93 and the second facing portion 94. That is, the first annular gasket portion 51 has a wide portion 51 f as a first connection portion configured by connecting the first facing portion 93 and the second facing portion 94. After the first opposing portion 93 and the second opposing portion 94 are spread and contacted with each other, the liquid gasket is pushed out in the radial direction when the first opposing portion 93 and the second opposing portion 94 are further expanded. Thereby, in the wide part 51f which is a 1st connection part, the dimension of radial direction becomes larger than another part. Thus, the 1st cyclic | annular gasket part 51 which has the wide part 51f is made by employ | adopting the manufacturing method of this embodiment provided with the space | gap part G1.

  Moreover, in attachment process S5, the 1st liquid gasket part 91 is also expanded by pressing the lower surface of the connector part 63 against the 1st flange part 24. FIG. In addition, the 1st liquid gasket part 91 may be expanded in 2nd arrangement | positioning process S3, and may be expanded in both 2nd arrangement | positioning process S3 and attachment process S5. As described above, the first annular gasket portion 51 is formed, and the expanded first liquid gasket portion 91 is cured to form the fourth portion 52a, whereby the second annular gasket portion 52 is formed. . Thereby, the gasket part 50 is made.

  In the attaching step S5, when the second housing 22 is attached to the first housing 21, the lower surface of the annular portion 25a is located above the bus bar holder 61 through the second seal member 72 attached to the bus bar holder 61. Contact the surface. As a result, the second seal member 72 seals between the second housing lid portion 22 b and the bus bar holder 61. That is, in the mounting step S5, an operator or the like brings the second housing lid portion 22b into contact with the upper surface of the bus bar holder 61 via the second seal member 72, and the lower surface of the second housing lid portion 22b. And the upper surface of the bus bar holder 61 are sealed.

  Here, in the case where the liquid gasket is applied on the outer side in the radial direction from the second seal member 72, when the second housing 22 is attached to the first housing 21, the gap between the second seal member 72 and the liquid gasket is sealed. It becomes space. Therefore, the air between the second seal member 72 and the liquid gasket moves radially outward via the liquid gasket, and a part of the liquid gasket tends to be excessively thinly extended. Thereby, the sealing performance between the 1st housing 21 and the 2nd housing 22 may have fallen more easily.

  On the other hand, according to this embodiment, the air between the second seal member 72 and the second annular gasket portion 52 can be extracted via the gap portion G1 as described above. Therefore, even when the second seal member 72 is provided, it is possible to suppress a part of the second annular gasket portion 52 from being excessively thinly extended, and between the first housing 21 and the second housing 22. Sealability can be improved. Moreover, the sealing performance between the 1st housing 21 and the 2nd housing 22 can be improved more by providing the 1st sealing member 71 and the 2nd sealing member 72. FIG.

  Here, if the first seal member 71 and the second seal member 72 are provided, even if moisture enters from the gap between the first flange portion 24 and the second flange portion 27, the rotor 30 and the stator 40 may have moisture. Can be prevented from entering. However, moisture that has entered from the gap between the first flange portion 24 and the second flange portion 27 may accumulate between the bus bar holder 61 and the housing 20. In this case, the housing 20 may be easily corroded by moisture.

  On the other hand, according to the present embodiment, since the first annular gasket portion 51 is also provided in addition to the first seal member 71 and the second seal member 72, moisture is present between the bus bar holder 61 and the housing 20. Infiltration can be suppressed. Thereby, it can suppress that the housing 20 corrodes.

  The second seal member 72 may be attached to the bus bar holder 61 at any time before the attachment step S5. For example, the second seal member 72 is fitted into the bus bar holder 61 by being fitted into the groove 61a before the second arrangement step S3. In the state of being fitted in the groove 61a, the upper end of the second seal member 72 is positioned below the upper end of the applied liquid gasket. Therefore, the second housing 22 contacts the liquid gasket, that is, the second liquid gasket portion 92 prior to the second seal member 72 in the attachment step S5.

  An operator or the like attaches the second housing 22 to the first housing 21, and then attaches a part of the first attachment part 24a and a part of the second attachment part 27a from the lower side of the first attachment part 24a. Both the first housing 21 and the second housing 22 are fixed by caulking upward. In addition, in FIG. 8 to FIG. 10, the caulked portion of the first attachment portion 24a is indicated by a two-dot chain line.

  The present invention is not limited to the above-described embodiment, and other configurations can be employed. The gasket part is not particularly limited as long as it has the first annular gasket part. The first annular gasket portion may have a narrow portion where the radial dimension is reduced in a part of the circumferential direction instead of the wide portion. In this case, the 1st connection part comprised by connecting the 1st opposing part and the 2nd opposing part is a narrow part. The narrow portion is smaller than the radial dimension of the first annular gasket portion other than the first annular gasket portion. For example, in the case where the first facing portion and the second facing portion are spread and come into contact, if the amount of gasket in the first facing portion and the second facing portion is relatively small with respect to the width of the gap portion, The dimension in the radial direction of one connecting portion may be smaller than other portions, and a narrow portion may be made. As described above, when the method of forming the liquid gasket portion divided by the gap portion is adopted, depending on the relationship between the width of the gap portion and the amount of the gasket of the liquid gasket portion, There are cases where narrow parts are made.

  The second annular gasket portion may be provided independently of the first annular gasket portion. That is, a part of the second annular gasket part may not be constituted by a part of the first annular gasket part. The second annular gasket portion may not be provided.

  The first seal member and the second seal member may be seal members other than the O-ring. Either one or both of the first seal member and the second seal member may not be provided. The bus bar unit may not be provided.

  In the liquid gasket portion forming step, at least a portion of the liquid gasket portion is disposed in a portion including the edge portion of the first opening, and a ring-shaped portion along the circumferential direction is divided through a gap portion. If formed, the range of application of the liquid gasket is not particularly limited. For example, in the above-described embodiment, the gasket constituting the entire second liquid gasket portion 92 is applied in the second application step S4 as the liquid gasket portion forming step. However, the present invention is not limited to this. For example, a liquid gasket is applied to the entire circumference of the radially inner edge of the first flange portion 24 in the first application step S2, and a liquid gasket is applied only to the connector portion 63 in the second application step S4. The second liquid gasket portion 92 may be formed. In this case, the first portion 92a of the second liquid gasket portion 92 is formed in the first application step S2, and the second portion 92b and the third portion 92c of the second liquid gasket portion 92 are formed in the second application step S4. Is done.

  The first application step may be performed at any time as long as it is before the second arrangement step. For example, the first application process may be performed before the first arrangement process. The first application process may not be performed.

  The liquid gasket part formed in the liquid gasket part forming step may have any shape as long as a part of the annular shape along the circumferential direction is divided through the gap. The liquid gasket part formed in the liquid gasket part forming step may have a shape like the second liquid gasket part 192 shown in FIG. 11, for example. As shown in FIG. 11, in the second liquid gasket portion 192, the second portion 192 b has a third facing portion 193 and a fourth facing portion 194. That is, the second liquid gasket portion 192 includes a third facing portion 193 and a fourth facing portion 194. The third facing portion 193 and the fourth facing portion 194 extend in the circumferential direction as a whole.

  The third facing portion 193 includes a first straight portion 193a and a second straight portion 193b. The first straight portion 193a is a portion that extends in a straight line inclined toward the radially outer side from the upper end of the third portion 92c on the one side in the circumferential direction toward the other side in the circumferential direction. The second straight portion 193b is a portion that extends linearly in the width direction Y from the tip of the first straight portion 193a. Note that the first straight portion 193a and the second straight portion 193b do not necessarily need to be linear as long as they extend in the above-described direction, and may be curved or bent.

  The fourth facing portion 194 includes a first straight portion 194a and a second straight portion 194b. The first straight portion 194a is a portion that extends in a straight line inclined toward the radially outer side from the upper end of the third portion 92c on the other side in the circumferential direction toward the one side in the circumferential direction. The second straight part 194b is a part that extends linearly in the width direction Y from the tip of the first straight part 194a. The second straight part 194b is arranged away from the second straight part 193b in the radial direction. The second straight portion 193b and the second straight portion 194b are opposed to each other in the radial direction via the gap G2. That is, the 3rd opposing part 193 and the 4th opposing part 194 oppose radial direction via the space | gap part G2. Note that the first straight portion 194a and the second straight portion 194b do not necessarily need to be linear as long as they extend in the above-described direction, and may be curved or bent.

  According to this configuration, the gap portion G2 can be easily elongated in the width direction Y, and the portion where the third facing portion 193 and the fourth facing portion 194 face each other can be increased in the width direction Y. For this reason, even if a part of the gap G2 in the width direction Y is not filled, it is easy to connect the third facing part 193 and the fourth facing part 194 by filling the other part of the gap G2. Therefore, it is easy to form the first annular gasket portion 151 shown in FIG.

  As shown in FIG. 11, a liquid gasket is applied and the attachment step S <b> 5 is performed, thereby forming a first annular gasket portion 151 as shown in FIG. 12. In addition, illustration of the 2nd housing 22 is abbreviate | omitted in FIG. As shown in FIG. 12, the second portion 151b of the first annular gasket portion 151 has a wide portion 151f. The wide portion 151f is a second connection portion configured by connecting the third facing portion 193 and the fourth facing portion 194. That is, the 1st annular gasket part 151 has the wide part 151f as a 2nd connection part.

  The dimension of the wide part 151f in the radial direction is larger than the dimension in the radial direction of the first annular gasket part 151 other than the wide part 151f. Since the third facing portion 193 and the fourth facing portion 194 are opposed to each other in the radial direction via the gap portion G2, the dimension in the radial direction is increased by connecting the third facing portion 193 and the fourth facing portion 194. A part is provided. The wide portion 151f is a central portion in the circumferential direction of the second portion 151b.

  Step portions 151g and 151h are provided at both ends in the circumferential direction of the wide portion 151f. The stepped portion 151g is provided at an end portion on one side in the circumferential direction of the wide portion 151f, and protrudes radially outward from a portion of the second portion 151b located on one side in the circumferential direction of the wide portion 151f toward the wide portion 151f. A step is formed. The step portion 151g is configured by the tip portion of the second straight portion 194b in the fourth facing portion 194.

  The step portion 151h is provided at the end portion on the other circumferential side of the wide portion 151f, and protrudes radially inward from the portion located on the other circumferential side of the wide portion 151f in the second portion 151b toward the wide portion 151f. A step is formed. The step portion 151h is configured by the tip portion of the second straight portion 193b of the third facing portion 193.

  In the second liquid gasket portion 92 shown in FIGS. 9 and 10 and the second liquid gasket portion 192 shown in FIG. 11, the position of the gap is not particularly limited. The space may be provided on the upper surface of the first flange portion. A plurality of voids may 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 ... Through-hole, 21 ... First housing, 21a ... First opening, 22 ... Second housing, 22a ... Second opening, 22b ... Second housing cover, 22c ... First 2 housing cylinder part, 30 ... rotor, 31 ... shaft, 40 ... stator, 50 ... gasket part, 51, 151 ... first annular gasket part, 51f ... wide part (first connecting part), 52 ... second annular gasket part 61 ... Bus bar holder, 62 ... Bus bar holder body, 63 ... Connector part, 71 ... First seal member, 72 ... Second seal member, 81 ... Bus bar, 93 ... First opposing part, 94 ... Second opposing part, 151f ... wide part (second connecting part), 193 ... third opposing part, 194 ... fourth opposing part, G1, G2 ... gap part, J ... central axis, S1 ... first arranging step, S2 ... first applying step ( Application process), 3: second arrangement step, S4 ... second coating step (liquid gasket portion forming step), S5 ... attaching step, Z ... axial

Claims (13)

A rotor having a shaft disposed along a central axis;
A stator disposed radially outside the rotor;
A housing for accommodating the rotor and the stator therein;
With
The housing is
A cylindrical first housing having a first opening that opens on one side in the axial direction;
A cylindrical opening having a second opening that opens on the other side in the axial direction, and an edge of the second opening is in contact with an edge of the first opening on the one axial side of the first housing; A second housing fixed to the first housing;
A method of manufacturing a motor having
A liquid gasket part forming step of applying a liquid gasket and forming a liquid gasket part disposed at a part including at least a part of the edge of the first opening;
An attachment step of attaching the second housing to the first housing by bringing the edge of the first opening and the edge of the second opening into contact with each other via the liquid gasket portion;
Including
The liquid gasket portion has a shape in which an annular part along the circumferential direction is divided via a gap portion,
In the mounting step, the liquid gasket portion is expanded to connect the portions of the liquid gasket portion that are separated via the gap, thereby forming a first annular gasket portion that is annular along the circumferential direction. The manufacturing method of a motor. The motor is
A bus bar electrically connected to the stator;
A bus bar holder disposed on one side in the axial direction of the stator and holding the bus bar;
With
The housing has a through hole that penetrates the wall of the housing in a radial direction,
The bus bar holder is
A bus bar holder body disposed inside the housing;
A connector part that extends radially outward from the bus bar holder body and projects outside the housing through the through hole;
Have
A first disposing step of disposing the rotor and the stator inside the first housing;
A second arrangement step of arranging the bus bar holder on one side in the axial direction of the stator;
Further including
In the liquid gasket part forming step, the liquid gasket part is formed by applying the liquid gasket along a circumferential direction at least on one axial side surface of the connector part,
The method of manufacturing a motor according to claim 1, wherein, in the attaching step, the second housing is brought into contact with a surface on one axial side of the connector portion through the liquid gasket portion. The motor is
An annular first seal member that is disposed in a portion on the other axial side of the radially outer surface of the bus bar holder and extends along the circumferential direction;
An annular second seal member that is disposed on a surface on one axial side of the bus bar holder and extends along the circumferential direction;
Further comprising
The second housing is
A second housing cover portion covering one axial side of the stator;
A second housing tube portion extending from the radially outer edge portion of the second housing lid portion to the other side in the axial direction;
Have
In the second arrangement step, a portion of the other side of the bus bar holder in the axial direction is fitted into the inside of the first housing, and the radially inner side surface of the first housing and the bus bar holder are fixed by the first seal member. Seal between the radially outer surface,
In the liquid gasket portion forming step, the liquid gasket portion is formed on the radially outer side than the second seal member,
In the mounting step, the second housing lid portion is brought into contact with a surface on one axial side of the bus bar holder via the second seal member, and the surface on the other axial side of the second housing lid portion. The manufacturing method of the motor of Claim 2 which seals between the surface of an axial direction one side of the said bus-bar holder. An application step of applying the liquid gasket along a circumferential direction to a portion of the edge portion of the first opening that is disposed on the other axial side of the connector portion before the second arrangement step. Including
In the liquid gasket portion forming step, both ends in the circumferential direction of the liquid gasket applied to one axial surface of the connector portion are both ends in the circumferential direction of the liquid gasket applied in the applying step. The method for manufacturing a motor according to claim 2, wherein the motor is connected to each other.   The motor manufacturing method according to any one of claims 2 to 4, wherein the gap is disposed on a surface on one side in the axial direction of the connector.   6. The method of manufacturing a motor according to claim 1, wherein the liquid gasket portion includes a first facing portion and a second facing portion that are opposed to each other in the circumferential direction via the gap portion. The first annular gasket portion has a first connection portion configured by connecting the first facing portion and the second facing portion;
The method for manufacturing a motor according to claim 6, wherein a dimension in a radial direction of the first connection portion is larger or smaller than a dimension in a radial direction in a portion other than the first connection portion in the first annular gasket portion. . The liquid gasket portion has a third facing portion and a fourth facing portion extending in the circumferential direction,
6. The method of manufacturing a motor according to claim 1, wherein the third facing portion and the fourth facing portion are opposed to each other in the radial direction via the gap portion. The first annular gasket portion has a second connection portion configured by connecting the third facing portion and the fourth facing portion,
9. The method of manufacturing a motor according to claim 8, wherein a dimension in a radial direction of the second connection portion is larger than a dimension in a radial direction in a portion other than the second connection portion in the first annular gasket portion. A rotor having a shaft disposed along a central axis;
A stator disposed radially outside the rotor;
A housing for accommodating the rotor and the stator therein;
With
The housing is
A cylindrical first housing having a first opening that opens on one side in the axial direction;
A cylindrical opening having a second opening that opens on the other side in the axial direction, and an edge of the second opening is in contact with an edge of the first opening on the one axial side of the first housing; A second housing fixed to the first housing;
Have
The edge of the first opening and the edge of the second opening are in contact with each other via an annular first annular gasket portion along the circumferential direction,
The first annular gasket portion is
Made of liquid gasket, and
A motor having a portion in which a radial dimension increases in a part of the circumferential direction or a part in which a radial dimension decreases in a part of the circumferential direction. A bus bar electrically connected to the stator;
A bus bar holder disposed on one side in the axial direction of the stator and holding the bus bar;
Further comprising
The housing has a through hole that penetrates the wall of the housing in a radial direction,
The bus bar holder is
A bus bar holder body disposed inside the housing;
A connector part that extends radially outward from the bus bar holder body and projects outside the housing through the through hole;
Have
The first annular gasket portion is
A portion disposed between the edge of the first opening and the edge of the second opening; and
A portion disposed between a surface on one side in the axial direction of the connector portion and the axial direction of the second housing;
The motor according to claim 10, comprising: An annular first seal member that is disposed in a portion on the other axial side of the radially outer surface of the bus bar holder and extends along the circumferential direction;
An annular second seal member that is disposed on a surface on one axial side of the bus bar holder and extends along the circumferential direction;
Further comprising
The second housing is
A second housing cover portion covering one axial side of the stator;
A second housing tube portion extending from the radially outer edge portion of the second housing lid portion to the other side in the axial direction;
Have
The first seal member seals between a radially inner side surface of the first housing and a radially outer side surface of the bus bar holder,
The second seal member seals between a surface on the other axial side of the second housing lid and a surface on the one axial side of the bus bar holder,
The motor according to claim 11, wherein the first annular gasket portion is disposed on a radially outer side than the second seal member. As viewed along the direction in which the connector portion extends, an annular second annular gasket portion surrounding the connector portion is disposed between the inner surface of the through hole and the outer surface of the connector portion,
The motor according to claim 11 or 12, wherein a part of the second annular gasket part is constituted by a part of the first annular gasket part.

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