Motor and Electrical Product

Abstract

An embodiment of the present application provides a motor and an electrical product. The motor has: a rotor, a stator, a first bearing and a second bearing, a support member, a housing having a first flat portion and a cylindrical portion, and a bearing retainer. The cylindrical portion has: a first inner peripheral surface, on the inner side of which the stator is disposed; a second inner peripheral surface, the distance from the second inner peripheral surface to the central axis being greater than the distance from the first inner peripheral surface to the central axis, and the second inner peripheral surface being in contact with the outer peripheral surface of the bearing retainer; and a stepped surface that connects the first inner peripheral surface and the second inner peripheral surface, and the stepped surface is in contact with the lower surface of the bearing retainer. The housing further has a riveting portion located on the second inner peripheral surface of the cylindrical portion, and the bearing retainer is fixed to the second inner peripheral surface of the cylindrical portion through the riveting portion. With this structure, through housing riveting, the limitation on the configuration of through holes can be reduced.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of electromechanics, and particularly to a motor and an electrical product. Background Art

[0002] Currently, in order to fix the bus bar cage to the motor housing, pressure processing (such as riveting processing, etc.) can be performed on the upper surface of the bearing cage by pins or the like. After the pressure processing, the bearing cage is provided with a recess and a pressing portion.

[0003] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art just because these solutions are described in the background art part of the present application. Summary of the Invention

[0004] The inventors found that since there are a recess and a pressing portion on the upper surface of the bearing cage, it is necessary to separately arrange the through holes through which the coil wires pass in the radial and circumferential directions, which thus restricts the design. In addition, with the miniaturization process of the motor, the space for providing the recess and the pressing portion on the upper surface of the bearing cage is relatively limited.

[0005] In order to solve at least one of the above problems or other similar problems, embodiments of the present application provide a motor and an electrical product to reduce the restrictions on the arrangement of the through holes in the bearing cage.

[0006] According to one aspect of the embodiments of the present application, a motor is provided, the motor having:

[0007] A rotor that rotates about a central axis;

[0008] A stator that is located radially outside the rotor and is disposed opposite to the rotor, and a plurality of coils are wound around the stator;

[0009] A first bearing and a second bearing that rotatably support the rotor relative to the stator;

[0010] A support member that is located on the upper side in the axial direction of the stator and holds a conductive member that supplies power to the plurality of coils;

[0011] A housing that has a first flat portion extending radially and a cylindrical portion extending from the radially outer edge of the first flat portion to the upper side in the axial direction, thereby forming an opening that is open on the upper side in the axial direction, the first flat portion holds the first bearing, and the radially inner side of the cylindrical portion houses the rotor and the stator; and

[0012] A bearing cage, which is disposed on the upper side in the axial direction of the stator, holds the second bearing, and has at least one through hole through which the lead wires of the conductive member and / or the coil extend upward from the bearing cage;

[0013] The cylindrical portion has:

[0014] A first inner peripheral surface, on the inner side of which the stator is disposed;

[0015] A second inner peripheral surface, the distance from the second inner peripheral surface to the central axis being greater than the distance from the first inner peripheral surface to the central axis, and the second inner peripheral surface being in contact with the outer peripheral surface of the bearing cage;

[0016] And

[0017] A stepped surface, which connects the first inner peripheral surface and the second inner peripheral surface, and the stepped surface is in contact with the lower surface of the bearing cage,

[0018] Wherein,

[0019] The housing further has a riveting portion, which is located on the second inner peripheral surface of the cylindrical portion,

[0020] The bearing cage is fixed to the second inner peripheral surface of the cylindrical portion through the riveting portion.

[0021] In some embodiments, the housing further has a groove, which is located on the second inner peripheral surface and extends in the axial direction; the riveting portion is located at the lower end in the axial direction of the groove.

[0022] In some embodiments, the housing further has a protruding portion, which protrudes radially outward from the second inner peripheral surface of the cylindrical portion; the groove is located radially inside the protruding portion; the riveting portion and the protruding portion are opposed to each other in the radial direction.

[0023] In some embodiments, the motor further has a cover portion, which covers the opening portion of the housing; the housing further has a sealing member, which is located axially between the cylindrical portion and the cover portion, and the sealing member is located at a position radially outside the groove.

[0024] In some embodiments, the housing further has a protruding portion, which protrudes radially outward from the second inner peripheral surface of the cylindrical portion; the riveting portion and the protruding portion are opposed to each other in the radial direction, and the circumferential length of the riveting portion is shorter than the circumferential length of the protruding portion.

[0025] In some embodiments, the bearing cage is formed by stamping.

[0026] In some embodiments, the bearing cage has a second flat portion extending radially and a first cylindrical portion extending axially from an end on the radially outer side of the second flat portion.

[0027] In some embodiments, the bearing cage further has a second cylindrical portion located on the radially outer side of the first cylindrical portion and a bending portion connecting the first cylindrical portion and the second cylindrical portion.

[0028] In some embodiments, the first cylindrical portion extends axially upward from an end on the radially outer side of the second flat portion, the bending portion is located axially above the first cylindrical portion, and the bending portion contacts the riveting portion.

[0029] According to another aspect of the embodiments of the present application, there is provided an electrical product, wherein the electrical product has a motor as described in any one of the foregoing embodiments.

[0030] One of the beneficial effects of the embodiments of the present application is that: according to the embodiments of the present application, by riveting the housing, the limitation of the through-hole configuration can be reduced.

[0031] Referring to the following description and drawings, specific embodiments of the present application are disclosed in detail, indicating the ways in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope thereby. Within the spirit and terms of the appended claims, the embodiments of the present application include many changes, modifications, and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The included drawings are used to provide a further understanding of the embodiments of the present application, which form a part of the specification, are used to illustrate the embodiments of the present application, and are used to explain the principles of the present application together with the written description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0033] Figure 1 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0034] Figure 2 is a schematic view of a housing of a motor according to an embodiment of the present application;

[0035] Figure 3 is Figure 2 a schematic view of a cylindrical portion of the housing shown;

[0036] Figure 4 is Figure 3 a schematic view of an inner peripheral surface of the cylindrical portion shown;

[0037] Figure 5 It is a partial enlarged schematic diagram of the housing and the bearing cage;

[0038] Figure 6 It is another schematic diagram of the motor of the embodiment of the present application;

[0039] Figure 7 It is Figure 6 A schematic diagram of the internal structure of the motor shown;

[0040] Figure 8 It is a schematic diagram of the bearing cage of the motor of the embodiment of the present application;

[0041] Figure 9 It is Figure 8 A schematic diagram of a cross-section of the bearing cage shown;

[0042] Figure 10 It is a schematic diagram of the bearing cage being fixed to the second outer peripheral surface of the cylindrical portion by riveting;

[0043] Figure 11 It is another schematic diagram of the bearing cage being fixed to the second outer peripheral surface of the cylindrical portion by riveting;

[0044] Figure 12 It is yet another schematic diagram of the bearing cage being fixed to the second outer peripheral surface of the cylindrical portion by riveting. Detailed implementation manners

[0045] Referring to the accompanying drawings and through the following description, the foregoing and other features of the present application will become apparent. In the description and drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0046] In the embodiments of the present application, the term "and / or" includes any one and all combinations of one or more of the related listed terms. The terms "comprising", "including", "having", etc. mean the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0047] In the embodiments of the present application, singular forms such as "a" and "the" may include plural forms and should be broadly understood as "one kind" or "one category" rather than being limited to the meaning of "one"; in addition, the term "the" should be understood to include both singular and plural forms unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to...", and the term "based on" should be understood as "at least partially based on...", unless the context clearly indicates otherwise.

[0048] In addition, in the following description of the present application, for the convenience of description, the direction extending along the central axis of the motor (such as the central axis O) or the direction parallel thereto is referred to as the "axial direction"; the radial direction centered on the central axis O is referred to as the "radial direction"; the direction close to the central axis O is referred to as the "radial inner side"; the direction away from the central axis O is referred to as the "radial outer side"; the direction around the central axis O is referred to as the "circumferential direction"; the side where the flat plate portion of the motor housing is located is referred to as the lower side or the bottom, and the side opposite to the lower side or the bottom is referred to as the upper side or the top. It should be noted, however, that these are only for the convenience of description and do not limit the orientation when the motor is used and manufactured.

[0049] The following describes the implementation manners of the embodiments of the present application with reference to the drawings.

[0050] Embodiments of the first aspect

[0051] The embodiments of the present application provide a motor.

[0052] Figure 1 is a schematic diagram of a cross-section of the motor according to the embodiments of the present application. As Figure 1 shown, the motor has: a rotor 10, a stator 20, a first bearing 30, a second bearing 40, a support member 50, a housing 60, and a bearing retainer 70.

[0053] In the embodiments of the present application, the rotor 10 rotates about the central axis O; the stator 20 is located on the radial outer side of the rotor 10 and is disposed opposite to the rotor 10, and a plurality of coils 21 are wound around the stator 20; the first bearing 30 and the second bearing 40 rotatably support the rotor 10 relative to the stator 20; the support member 50 is located on the upper side in the axial direction of the stator 20 and holds a conductive member 212 that supplies power to the plurality of coils 21; the housing 60 has a first flat plate portion 61 that extends radially and a cylindrical portion 62 that extends from the radial outer edge of the first flat plate portion 61 to the upper side in the axial direction, thereby forming an opening 63 that is open on the upper side in the axial direction. The first flat plate portion 61 holds the first bearing 30, and the radial inner side (i.e., the inside of the cylindrical portion 62) of the cylindrical portion 62 houses the rotor 10 and the stator 20; the bearing retainer 70 is disposed on the upper side in the axial direction of the stator and holds the second bearing 40 and has at least one through hole ( Figure 1(not shown in the figure), the lead wires 211 of the conductive member 212 and / or the coil 21 extend upward through the through hole to the upper side of the bearing cage 70.

[0054] Figure 2 is a schematic view of the housing 60 of the motor according to an embodiment of the present application, showing the cylindrical portion 62; Figure 3 is Figure 2 a partially enlarged schematic view of the cylindrical portion 62 of the housing 60 shown; Figure 4 is Figure 3 a schematic view of the inner peripheral surface of the cylindrical portion 62 shown.

[0055] As Figures 2 to 4 shown, in the embodiment of the present application, the cylindrical portion 62 has: a first inner peripheral surface 621, a second inner peripheral surface 622, and a stepped surface 623. A stator 20 is disposed inside the first inner peripheral surface 621; the distance h2 from the second inner peripheral surface 622 to the central axis O is larger than the distance h1 from the first inner peripheral surface 621 to the central axis O, and the second inner peripheral surface 622 contacts the outer peripheral surface of the bearing cage 70; the stepped surface 623 connects the first inner peripheral surface 621 and the second inner peripheral surface 622, and the stepped surface 623 contacts the lower surface of the bearing cage 70.

[0056] In the embodiment of the present application, as Figure 4 shown, the housing 60 further has a riveting portion 64, and the riveting portion 64 is located on the second inner peripheral surface 622 of the cylindrical portion 62. The bearing cage 70 is fixed to the second inner peripheral surface 622 of the cylindrical portion 62 through the riveting portion 64.

[0057] With this structure, the bearing cage can be fixed by riveting, which can reduce the limitation of the configuration of the through hole.

[0058] In some embodiments, the stepped surface 623 contacts the lower surface of the bearing cage 70 and bears the load when the cylindrical portion 62 of the housing 60 is riveted.

[0059] In some embodiments, the bearing cage 70 can also be riveted after being fixed to the second inner peripheral surface 622 of the housing by means of hot press fitting or press fitting.

[0060] In some embodiments, the conductive member 212 is a bus bar, and the supporting member 50 is a bus bar holder. The bus bar is fixed to the bus bar holder by molding or heat welding. The present application is not limited thereto. The conductive member 212 can also be a coil lead wire 211 extending from the coil 21. In this case, the supporting member 50 holds the coil lead wire 211.

[0061] In some embodiments, the bearing cage 70 is preferably made of a metallic material, whereby the second bearing 40 can be held more firmly. However, the present application is not limited thereto, and the bearing cage 70 may also be made of other materials.

[0062] In some embodiments, the support member 50 is preferably made of a resin material. Thus, a part of the support member 50 is located inside the through hole, and contact short-circuit between conductive members such as bus bars or coil lead wires and the metallic bearing cage 70 can be suppressed. However, the present application is not limited thereto, and the support member 50 may also be made of other non-conductive materials, and the above effects can be achieved as well.

[0063] In some embodiments, as Figure 3 shown, the housing 60 further has a groove 65 which is located on the second inner circumferential surface 622 and extends axially, and the riveting portion 64 is located at the axially lower end of the groove 65. Thereby, the riveting tool T can be easily positioned, and the highly accurate riveting portion 64 can be provided on the housing 60.

[0064] Figure 5 is a partial enlarged cross-sectional view of the housing 60 and the bearing cage 70. As Figure 5 shown, the riveting portion 64 ( Figure 5 not shown in

[0065] is formed by riveting the axially lower end of the groove 65 with the riveting tool T. The upper surface S1 of the axially lower end of the groove 65 is preferably lower than the upper surface S2 of the outer peripheral portion of the bearing cage. In this case, since the riveting portion 64 bites into the outer periphery of the bearing cage 70, circumferential displacement of the bearing cage 70 can be suppressed. Figure 2 and Figure 3 shown, the housing 60 further has a protruding portion 66 which protrudes radially outward from the second inner circumferential surface of the cylindrical portion 62. The groove 65 is located radially inside the protruding portion 66, and the riveting portion 64 ( Figure 2 and Figure 3 not shown in

[0066] is opposed to the protruding portion 66 in the radial direction. Thereby, by providing the groove 65 on the protruding portion 66 having a thickness in the radial direction, the fixing strength of the riveting portion is improved.

[0067] In some embodiments, a cover portion 80 (to be described below) covering the opening portion 63 of the motor can be mounted on the protruding portion 66. A through hole or a screw hole can be provided in the protruding portion 66, and the protruding portion 66 can also be used as a portion for connecting to other devices. Figure 2 and Figure 3 In some embodiments, a plurality of grooves 65 are provided radially inside the protruding portion 66, and a plurality of riveting portions 64 ( Figure 2 and Figure 3(not shown in the figure). In this case, the riveting portion 64 and the protruding portion 66 are also opposed to each other in the radial direction. Since a plurality of riveting portions 64 are provided on the protruding portion 66, the fixing strength of the bearing cage 70 is further improved.

[0068] In the present embodiment, as Figure 2 and Figure 3 shown, two grooves 65 are provided on the inner side in the radial direction of the protruding portion 66. Thus, two riveting portions 64 ( Figure 2 and Figure 3 not shown in the figure) can be provided. As Figure 2 shown, the housing 60 has four protruding portions, and the riveting portion 64 has eight ( Figure 2 not shown in the figure), but it is not limited thereto. The number of the protruding portion 66, the groove 65, and the riveting portion 64 can be appropriately changed. In addition, riveting portions can also be provided on the upper side in the axial direction of the protruding portion 66 and the cylindrical portion 62 to fix the bearing cage 70. Or riveting portions can also be provided at other positions on the second inner peripheral surface 622 to fix the bearing cage 70.

[0069] Figure 6 is another schematic diagram of the motor according to the embodiment of the present application, Figure 7 is Figure 6 the schematic diagram of the internal structure of the motor shown.

[0070] In some embodiments, as Figure 6 and Figure 7 shown, the motor further has a cover portion 80, and the cover portion 80 covers the opening portion 63 of the housing 60; as Figure 7 shown, the housing 60 further has a sealing member 67. The sealing member 67 is located axially between the cylindrical portion 62 and the cover portion 80, and the sealing member 67 is located at a position radially outside the groove 65. Thus, the waterproof performance can be improved by the sealing member 67.

[0071] In the embodiment of the present application, the sealing member 67 can be formed by hardening an adhesive or a liquid gasket. For example, an adhesive or a liquid gasket is applied to the upper surface of the cylindrical portion 62 with a dispensing machine, and the cover portion 80 is disposed on the upper surface of the cylindrical portion 62 of the housing 60. The adhesive and the liquid gasket are hardened to form the sealing member 67, which can inhibit water from entering the interior of the motor. The sealing member 67 is disposed at a position radially outside the groove 65. That is to say, the adhesive or the liquid gasket is applied at a position radially outside the groove 65. Thus, it is possible to prevent the forming defect of the sealing member 67 caused by the adhesive or the liquid gasket flowing into the groove 65, and the waterproof performance is improved.

[0072] In some embodiments, in the case where the aforementioned protruding portion 66 is provided and the aforementioned groove 65 is not provided, the riveting portion 65 and the protruding portion 66 are opposed to each other in the radial direction, and the circumferential length of the riveting portion 65 is shorter than the circumferential length of the protruding portion 66. With this structure, a long riveting portion can be provided in the circumferential direction at a place where the casing has a thickness in the radial direction, thereby improving the fixing strength. However, the present application is not limited thereto, and it is also possible that the circumferential length of the riveting portion 65 is shorter than the circumferential length on the radially inner side of the protruding portion 66 and longer than the screw hole diameter of the protruding portion 66. With this structure, since the riveting pressure is not applied to the portion where the thickness in the radial direction is thin, deformation of the casing can be suppressed.

[0073] In some embodiments, the bearing cage 70 is formed by stamping. Thus, the bearing cage 70 can be made very thin, achieving weight reduction and reducing the production cost.

[0074] Figure 8 It is a schematic view of the bearing cage of the motor according to the embodiment of the present application. Figure 9 is Figure 8 A schematic cross-sectional view of the bearing cage shown.

[0075] In some embodiments, as Figure 8 and Figure 9 shown, the bearing cage 70 has a second flat portion 71 extending in the radial direction and a first cylindrical portion 72 extending axially from the radially outer end of the second flat portion 71. With this structure, the outer peripheral strength of the bearing cage 70 can be improved.

[0076] In some embodiments, as Figure 9 shown, the bearing cage 70 further has a second cylindrical portion 73 located on the radially outer side of the first cylindrical portion 72 and a bent portion 74 connecting the first cylindrical portion 72 and the second cylindrical portion 73. With this structure, the outer peripheral strength of the bearing cage 70 can be further improved.

[0077] In the embodiment of the present application, the bearing cage 70 can be manufactured by stamping. The outer peripheral portion of the second flat portion 71 of the bearing cage 70 is bent axially to form the first cylindrical portion 72, and the rigidity and fastening strength of the outer peripheral portion of the bearing cage 70 are improved through the first cylindrical portion 72. In addition, the axially end portion of the first cylindrical portion 72 is bent radially outward and can also be folded back axially, thereby forming the bent portion 74 and the second cylindrical portion 73. Since the bearing cage has the first cylindrical portion 72, the bent portion 74, and the second cylindrical portion 73, the outer peripheral rigidity of the bearing cage 70 is improved. And, since the outer periphery of the bearing cage 70 has the first cylindrical portion 72, the bent portion 74, and the second cylindrical portion 73, the amount of deformation during the press-fitting of the bearing cage 70 into the casing can be absorbed, thereby better ensuring concentricity.

[0078] In some embodiments, the first cylindrical portion 72 may also extend downward from the end portion on the radially outer side of the second flat portion 71. Additionally, a bent portion may be formed radially from the lower axial end of the first cylindrical portion 72, and the second cylindrical portion may be formed by extending upward from the bent portion. Thereby, the outer peripheral strength of the bearing cage 70 can be further improved. The deformation amount of the bearing cage 70 during the press-fitting into the housing is absorbed, thereby better ensuring concentricity.

[0079] In addition, when the structure is such that the first cylindrical portion 72 extends upward from the end portion on the radially outer side of the second flat portion 71, and a bent portion 74 is formed radially outward from the upper side in the axial direction of the first cylindrical portion 72, and the second cylindrical portion 73 is formed by extending downward from the bent portion 74, since the riveting portion 64 and the second flat portion 71 can be arranged separately in the axial direction, deformation of the second flat portion 71 caused by riveting can be suppressed.

[0080] In some embodiments, as Figure 9 shown, the second flat portion 71 has a third cylindrical portion 75 extending axially from the radially inner end portion, and the second bearing 40 may also be held in the third cylindrical portion 75. Since the fastening length between the bearing cage 70 and the second bearing 40 can be obtained, sufficient fastening strength can be achieved even if the bearing cage 70 is a thin member manufactured by stamping.

[0081] In some embodiments, as Figure 9 shown, the axial end portion of the third cylindrical portion 75 may be bent radially inward or axially folded back, thereby forming an inner bent portion 76 and a fourth cylindrical portion 77. Since the bearing cage 70 has the third cylindrical portion 75, the inner bent portion 76, and the fourth cylindrical portion 77, the rigidity of the inner peripheral portion of the bearing cage 70 is improved.

[0082] In some embodiments, the third cylindrical portion 75 may also extend downward from the end portion on the axially inner side of the second flat portion 71. Additionally, an inner bent portion may be formed radially from the lower axial end of the third cylindrical portion 75, and the fourth cylindrical portion 77 may be formed by extending upward from the inner bent portion. With such a configuration, the second bearing 40 can be arranged closer to the rotor 10, and the overall length of the motor can be shortened.

[0083] In some embodiments, as Figure 9 shown, the first cylindrical portion 72 extends upward in the axial direction from the end portion on the radially outer side of the second flat portion 71, the bent portion 74 is located on the upper side in the axial direction of the first cylindrical portion 72, and the bent portion 74 contacts the riveting portion 64. Thus, the bent portion 74 is thicker than other portions of the bearing cage 70 manufactured by stamping. Since the portion with thickness is subjected to the stress of riveting, the overall skew of the bearing cage 70 can be reduced.

[0084] In some embodiments, as Figure 5As shown, the upper surface of the axially lower end of the groove 65 is located at a position lower than the upper end S2 of the bent portion 74. In this case, since the riveted portion 64 is bitten into the bent portion 74, the circumferential offset of the bearing cage 70 can be suppressed.

[0085] To make each embodiment of the present application more clearly understandable, the position of the riveted portion 64 will be described below with several schematic diagrams.

[0086] Figure 10 is a schematic diagram of the bearing cage 70 being fixed to the second inner circumferential surface 622 of the cylindrical portion 62 by riveting. In Figure 10 the example, the bearing cage 70 is flat and can be formed with the riveted portion 64 by riveting from the upper end of the housing 62 ( Figure 10 (a)) or the lower end of the groove 65 ( Figure 10 (b)).

[0087] Figure 11 is another schematic diagram of the bearing cage 70 being fixed to the second inner circumferential surface 622 of the cylindrical portion 62 by riveting. In Figure 11 the example, the bearing cage 70 has a bent portion and can be formed with the riveted portion 64 by riveting from the upper end of the housing 62 ( Figure 11 (a)) or the lower end of the groove 65 ( Figure 11 (b)).

[0088] Figure 12 is still another schematic diagram of the bearing cage 70 being fixed to the second inner circumferential surface 622 of the cylindrical portion 62 by riveting. In Figure 12 the example, the bearing cage 70 has a double bent portion and can be formed with the riveted portion 64 by riveting from the upper end of the housing 62 ( Figure 12 (a)) or the lower end of the groove 65 ( Figure 12 (b)).

[0089] It should be noted that only an exemplary description of the constitution of the motor related to the present application has been given above, but the present application is not limited thereto, and appropriate modifications can also be made on the basis of the above various embodiments. In addition, only an exemplary description of each component has been given above, but the present application is not limited thereto, and the specific content of each component can also refer to the related art; in addition, components not shown in Figures 1 to 9 can be added, or one or more components in Figures 1 to 9 can be reduced. Regarding other constitutions and structures of the motor, reference can be made to the related art, and the description thereof is omitted here.

[0090] For the motor according to the embodiment of the present application, the bearing cage is fixed by riveting, which can reduce the limitation of the through-hole configuration.

[0091] Embodiment of the second aspect

[0092] The embodiment of the present application provides an electrical product, which has the motor described in the embodiment of the first aspect. Since the structure of the motor has been described in detail in the embodiment of the first aspect, the content is incorporated herein and the description is omitted here.

[0093] In the embodiment of the present application, the electrical product can be any electrical device provided with a motor, such as an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a water dispenser, a washing machine, a sweeper, a compressor, a blower, a mixer and other household electrical appliances, or industrial devices such as pumps, conveyors, elevators, standard industrial general-purpose machines, wind turbines, grinders, traction motors, or various information processing devices, or can also be various components of an automobile, such as an electric power steering system of an automobile, a skylight adjustment component of an automobile, a seat adjustment component, a transmission, a braking device, etc.

[0094] The present application has been described in combination with specific embodiments, but those skilled in the art should understand that these descriptions are exemplary and not a limitation on the protection scope of the present application. Those skilled in the art can make various modifications and changes according to the spirit and principle of the present application, and these modifications and changes are also within the scope of the present application.

[0095] The preferred embodiments of the present application have been described above with reference to the accompanying drawings. Many features and advantages of these embodiments are clear from this detailed description, so the appended claims are intended to cover all such features and advantages that fall within the true spirit and scope of these embodiments. In addition, since many modifications and changes are readily envisioned by those skilled in the art, the embodiments of the present application are not to be limited to the exact structures and operations illustrated and described, but may cover all suitable modifications and equivalents that fall within its scope.

Claims

1. A motor, the motor having: A rotor that rotates about a central axis; A stator that is located radially outside the rotor, is disposed opposite to the rotor, and has a plurality of coils wound thereon; A first bearing and a second bearing that rotatably support the rotor relative to the stator; A support member that is located on the upper side in the axial direction of the stator and holds a conductive member that supplies power to the plurality of coils; A housing that has a first flat portion extending radially and a cylindrical portion extending from the radially outer edge of the first flat portion upward in the axial direction, thereby forming an opening that is open on the upper side in the axial direction, the first flat portion holds the first bearing, and the radially inner side of the cylindrical portion houses the rotor and the stator; and A bearing retainer that is disposed on the upper side in the axial direction of the stator, holds the second bearing, and has at least one through hole, and the conductive member and / or the lead wires of the coils extend upward from the bearing retainer through the through hole; The cylindrical portion has: A first inner peripheral surface, and the stator is disposed inside the first inner peripheral surface; A second inner peripheral surface, the distance from the second inner peripheral surface to the central axis is greater than the distance from the first inner peripheral surface to the central axis, and the second inner peripheral surface contacts the outer peripheral surface of the bearing retainer; And A stepped surface that connects the first inner peripheral surface and the second inner peripheral surface, and the stepped surface contacts the lower surface of the bearing retainer, It is characterized in that The housing further has a riveting portion that is located on the second inner peripheral surface of the cylindrical portion, The bearing retainer is fixed to the second inner peripheral surface of the cylindrical portion through the riveting portion.

2. The motor according to claim 1, It is characterized in that The housing further has a groove that is located on the second inner peripheral surface and extends in the axial direction; The riveting portion is located at the lower end portion in the axial direction of the groove.

3. The motor according to claim 2, It is characterized in that The housing further has a protruding portion that protrudes radially outward from the second inner peripheral surface of the cylindrical portion; The groove is located radially inside the protruding portion; The riveting portion and the protruding portion are opposed to each other in the radial direction.

4. The motor according to claim 3, It is characterized in that The motor further has a cover portion that covers the opening of the housing; The housing further has a sealing member that is located axially between the cylindrical portion and the cover portion, and the sealing member is located at a position radially outside the groove.

5. The motor according to claim 1, It is characterized in that The housing further has a protruding portion that protrudes radially outward from the second inner peripheral surface of the cylindrical portion; The riveting portion and the protruding portion are opposed to each other in the radial direction, and the circumferential length of the riveting portion is shorter than the circumferential length of the protruding portion.

6. The motor according to any one of claims 1 to 5, It is characterized in that The bearing retainer is formed by stamping.

7. The motor according to claim 6, It is characterized in that The bearing cage has a second flat portion extending radially and a first cylindrical portion extending axially from an end portion on the radially outer side of the second flat portion.

8. The motor according to claim 7, wherein, the bearing cage further has a second cylindrical portion located on the radially outer side of the first cylindrical portion and a bent portion connecting the first cylindrical portion and the second cylindrical portion.

9. The motor according to claim 8, wherein, the first cylindrical portion extends axially upward from an end portion on the radially outer side of the second flat portion, the bent portion is located axially above the first cylindrical portion, and the bent portion contacts the riveted portion.

10. An electrical product, wherein, the electrical product has the motor according to any one of claims 1 to 9.

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