Motor and electrical product

Abstract

The embodiment of the invention provides a motor and an electrical product, the motor comprises a stator core and a bus bar assembly arranged on one axial side of the stator core, the bus bar assembly comprises a bus bar holder and a bus bar, and a part of the bus bar is embedded into the bus bar holder. The bus bar comprises a claw part exposed from the bus bar holder, a tooth part of the stator core is insulated from a coil wound on the tooth part through an insulating piece, and the bus bar holder comprises an annular main body part; and the main body part and the insulating part are oppositely arranged in the radial direction. According to the invention, the main body part of the bus bar holder is arranged to be opposite to the insulating part in the radial direction, so that the bus bar holder does not additionally occupy the size in the axial direction, the axial length of the motor can be reduced, and the motor is miniaturized.

Description

Technical Field

[0001] The present application relates to the field of electromechanical engineering, and in particular to a motor and an electrical product. Background Art

[0002] In the existing motor structure, the busbar holder is arranged on the axial upper side of the insulator, and the claws of the busbar holder are supported on the stator core. Generally, the claws of the busbar holder are fixed to the back of the stator core, that is, radially outside the teeth of the stator core.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0004] The inventors have found that in the existing motor structure, since the busbar holder is fixed to the back of the stator core by claws, it occupies the axial dimension, resulting in a larger axial dimension of the motor.

[0005] In order to solve the above-mentioned problems or other similar problems, an embodiment of the present application provides a motor and an electrical product. By setting the main body of the busbar retainer to be radially opposite to the insulating member, the busbar retainer does not occupy additional axial dimensions, thereby reducing the axial length of the motor and making the motor miniaturized.

[0006] According to a first aspect of an embodiment of the present application, a motor is provided, the motor comprising a stator core and a busbar assembly disposed on one axial side of the stator core.

[0007] The bus bar assembly includes a bus bar holder and a bus bar partially embedded in the bus bar holder, wherein the bus bar includes a claw portion exposed from the bus bar holder.

[0008] The teeth of the stator core are insulated from the coils wound around the teeth by an insulator.

[0009] in:

[0010] The busbar holder includes an annular main body;

[0011] The main body portion and the insulating member are opposed to each other in the radial direction.

[0012] In one or more embodiments, the main body of the bus bar holder is located radially outside the insulating member.

[0013] In one or more embodiments, the opening of the claw portion faces radially inward.

[0014] In one or more embodiments, the inner circumferential surface of the main body of the busbar holder has a convex portion, and the outer circumferential surface of a portion of the insulating member that is radially opposite to the main body has a concave portion that cooperates with the convex portion.

[0015] In one or more embodiments, the busbar portion embedded in the main body is a sheet-like structure, and an extension surface thereof is parallel to the central axis of the motor.

[0016] In one or more embodiments, projections of the busbar portion embedded in the main body in the axial direction are located on the same circumference with the same radial size.

[0017] In one or more embodiments, there are plural bus bars, and the claws of the plural bus bars have the same height in the axial direction.

[0018] In one or more embodiments, the main body of the bus bar holder is located radially inward of the insulating member.

[0019] In one or more embodiments, the opening of the claw portion faces radially outward.

[0020] According to a second aspect of an embodiment of the present application, an electrical product is provided, wherein the electrical product comprises the motor as described in the first aspect above.

[0021] One of the beneficial effects of the embodiments of the present application is that by setting the main body of the busbar holder to be radially opposite to the insulating member, the busbar holder does not occupy additional axial dimensions, thereby reducing the axial length of the motor and miniaturizing the motor.

[0022] With reference to the following description and accompanying drawings, the embodiments of the present application are disclosed in detail. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0023] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0025] Figure 1 is a schematic diagram of some components of a motor according to an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A top view of a portion of the motor assembly is shown;

[0027] Figure 3 is a schematic diagram of a busbar assembly according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of an insulating member according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of multiple bus bars of a bus bar assembly according to an embodiment of the present application;

[0030] Figure 6 is a top view of a plurality of bus bars of a bus bar assembly according to an embodiment of the present application;

[0031] Figure 7 FIG. 4 is a side view of a plurality of bus bars of a bus bar assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying 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 attached claims.

[0033] In the embodiments of the present application, the term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "include", "comprises", "has", etc. refer to the existence of the stated features, elements, components or components, but do not exclude the existence or addition of one or more other features, elements, components or components.

[0034] In the embodiments of the present application, the singular forms "a", "the", etc. may include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" 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 in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0035] In addition, in the following description of the present application, for the convenience of explanation, the direction extending along the central axis OO' of the motor or the direction parallel to it is referred to as "axial", the radial direction centered on the central axis OO' is referred to as "radial", the direction around the central axis OO' is referred to as "circumferential", the side away from the central axis OO' in the radial direction is referred to as "radial outer side", the side close to the central axis OO' in the radial direction is referred to as "radial inner side", the direction from the bottom of the motor housing to the opening is referred to as "one axial side" or "axial upper side" or "upper side" or "above", and the direction from the opening of the motor housing to the bottom is referred to as "the other axial side" or "axial lower side" or "lower side" or "below". However, it is worth noting that these are only for the convenience of explanation and do not limit the orientation of the motor during use and manufacturing.

[0036] The implementation of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0037] Embodiments of the first aspect

[0038] An embodiment of the present application provides a motor.

[0039] In the embodiment of the present application, the motor is mounted on a car, for example, and used in a brake system. In addition, the motor can also be used for purposes other than braking. For example, the motor can also be used as a driving source for other parts of the car, such as an engine cooling fan or an oil pump. In addition, the motor can also be mounted on home appliances, office automation equipment, medical equipment, etc., to generate various driving forces.

[0040] Figure 1 It is a schematic diagram of some components of the motor of an embodiment of the present application. Figure 2 yes Figure 1 A top view of a partial assembly of a motor is shown.

[0041] like Figure 1 and Figure 2 As shown, the motor according to the embodiment of the present application includes a stator core 11 and a busbar assembly 20 disposed on one axial side of the stator core 11 .

[0042] In the embodiment of the present application, the teeth (not shown) of the stator core 11 are insulated from the coil 12 wound around the teeth (not shown) by the insulator 13. The stator core 11, the coil 12 and the insulator 13 constitute a stator.

[0043] Figure 3 is a schematic diagram of a busbar assembly 20 according to an embodiment of the present application. Figure 3 As shown, in the embodiment of the present application, the bus bar assembly 20 includes a bus bar holder 21 and a bus bar 22 partially embedded in the bus bar holder 21. The number of the bus bars 22 is multiple, that is, a portion of the multiple bus bars 22 is embedded in the bus bar holder 21, and the other portions of the multiple bus bars 22 are exposed from the bus bar holder 21.

[0044] like Figure 3 As shown, the bus bar 22 includes a claw portion 222 exposed from the bus bar holder 21. The claw portion 222 is formed substantially in an ear shape when viewed from the axial direction. The claw portion 222 has an opening, and the opening is used to fix the terminal of the coil 12.

[0045] In the embodiment of the present application, the bus bar holder 21 includes an annular main body 211, such as Figure 2 As shown, the annular main body 211 is radially opposed to the insulating member 13. That is, when viewed in the radial direction, the main body 211 of the bus bar holder 21 is projected onto the insulating member 13.

[0046] Thus, by arranging the main body 211 of the bus bar holder 21 to face the insulator 13 in the radial direction, the bus bar holder 21 does not occupy additional axial dimensions, thereby reducing the axial length of the motor and miniaturizing the motor.

[0047] In some embodiments, Figure 2 As shown, the main body 211 of the busbar holder 21 is located on the radially outer side of the insulating member 13, and accordingly, the opening of the claw 222 faces radially inward. This facilitates the connection between the terminal of the coil 12 and the claw. However, the present application is not limited thereto. For example, the main body 211 may also be located on the radially inner side of the insulating member 43, and accordingly, the opening of the claw 222 faces radially outward. This can further reduce the axial length of the motor 1 and make the motor 1 miniaturized.

[0048] Figure 4 Schematic diagram of the insulating member 13 according to the embodiment of the present application.

[0049] In some embodiments, Figure 4 As shown, the outer peripheral surface of the insulating member 13 has a recess 131. Figure 3As shown, the inner circumferential surface of the main body 211 of the bus bar holder 21 has a convex portion 214. The convex portion 214 and the concave portion 131 are opposite in the radial direction and fit each other. Thus, the bus bar holder 21 can be fixed in the circumferential direction to prevent the bus bar holder from moving in the circumferential direction.

[0050] Figure 5 FIG. 4 is a schematic diagram of a plurality of bus bars 22 of a bus bar assembly according to an embodiment of the present application. Figure 6 FIG. 4 is a top view of a plurality of bus bars 22 of a bus bar assembly according to an embodiment of the present application. Figure 7 FIG. 4 is a side view of a plurality of bus bars 22 of a bus bar assembly according to an embodiment of the present application.

[0051] like Figures 5 to 7 As shown, in some embodiments, the busbar portion embedded in the busbar holder 21 (referred to as the busbar main body 221) is a sheet-like structure, extending in the circumferential direction, and roughly forming an arc shape when viewed from the axial direction, and its extension surface is parallel to the central axis OO' of the motor. That is, the busbar main body 221 is longitudinally arranged in the axial direction and extends longitudinally. As a result, the radial thickness of the busbar holder 21 can be reduced, which is conducive to controlling the radial size of the motor.

[0052] In some embodiments, Figure 3 As shown, the main body 211 of the bus bar holder 21 may completely cover the bus bar main body 221 , or may partially cover the bus bar main body 221 , that is, part of the bus bar main body 221 is embedded in the main body 211 of the bus bar holder 21 .

[0053] Thus, the busbar portion embedded in the main body 211 of the busbar holder 21 is a sheet-like structure, and its extended surface is parallel to the central axis OO' of the motor. Thus, the radial thickness of the busbar assembly 20 can be reduced, thereby reducing the radial size of the motor.

[0054] In some embodiments, Figure 6 As shown, the axial projection of the portion of each bus bar 22 embedded in the main body 211 of the bus bar holder 21 (the bus bar main body 221) is a portion of a circular ring with the same radial size. That is, the axial projection of the portion of the bus bar 22 embedded in the main body 211 of the bus bar holder 21 (the bus bar main body 221) is located on the same circumference. As a result, the radial thickness of the bus bar assembly 20 can be further reduced, thereby reducing the radial size of the motor.

[0055] In some embodiments, Figure 5 As shown, the bus bar assembly 20 includes three bus bars 22. Figure 5 The bus bars 22 are marked as 22 - 1 , 22 - 2 , and 22 - 3 , but the present application is not limited thereto. The number of the bus bars 22 may be other as required.

[0056] In some embodiments, Figure 7 As shown, the claws 222 of the bus bars 22-1, 22-2, and 22-3 have the same height in the axial direction. Figure 7 The positions shown are all P. Thus, the coil terminal fixing operation can be facilitated, and the main body portion (including the claws) of the busbar assembly 20 does not occupy additional axial space, further reducing the axial size of the motor.

[0057] For example, Figures 5 to 7 As shown, the bus bar 22 may further include a bus bar terminal 223 , a first connection portion 224 connecting the bus bar body 221 and the claw portion 222 , and a second connection portion 225 connecting the bus bar body 221 and the bus bar terminal 223 .

[0058] In the above example, the first connection portion 224 can extend from the axial upper surface of the main body 221 to the axial upper side, and the front end of the first connection portion 224 can be bent radially inward, and the front end is connected to the claw portion 222. The second connection portion 225 can extend from the axial upper surface of the main body 221 to the radial inner side, and the front end of the second connection portion 225 can be bent axially upward, and the front end is connected to the busbar terminal 223. In addition, the busbar terminal 223 can be a sheet-like structure, which extends linearly to the axial upper side and is used to connect an external power source.

[0059] For example, Figure 3 As shown, the bus bar holder 21 may further include a terminal guide portion 212 and a connection portion 213 .

[0060] In the above example, the connection portion 213 may extend radially inward from the axial upper surface of the main body 211 to connect the terminal guide portion 212. The terminal guide portion 212 may extend in the axial direction and have a through hole that passes through the axial direction. The lower portion of the busbar terminal 223 of the busbar 22 is embedded in the through hole, and the upper portion of the terminal 223 extends from the through hole.

[0061] In the above embodiments, only the structure related to the motor of the embodiment of the present application is described, and the motor may also include other structures, such as a rotor, a housing, etc. For details, please refer to the relevant technology, and the description is omitted here.

[0062] The motor of the embodiment of the present application is described above from different perspectives through different embodiments. The above embodiments can be combined arbitrarily, and the description is omitted here. In addition, the above is only an exemplary description of the present application, but the present application is not limited to this, and appropriate modifications can be made based on the above embodiments.

[0063] According to the motor of the above embodiment, by arranging the main body of the busbar holder to be opposite to the insulator in the radial direction, the busbar holder does not occupy additional axial dimensions, thereby reducing the axial length of the motor and miniaturizing the motor.

[0064] Embodiments of the second aspect

[0065] The embodiment of the present application provides an electrical product having 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, its content is incorporated here and the description is omitted here.

[0066] In the embodiment of the present application, the electrical product can be any device or equipment using a motor, including various household appliances, office automation equipment, industrial equipment, vehicle-mounted devices or components in various equipment, etc., such as brake components using a motor.

[0067] It is worth noting that the above is only an exemplary description of the present application, but the present application is not limited thereto, and appropriate modifications can be made based on the above embodiments. In addition, the above is only an exemplary description of each component, but the present application is not limited thereto, and the specific content of each component can also refer to the relevant technology; in addition, components not shown in the figure can be added, or one or more components in the figure can be reduced.

[0068] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the principles of the present application, and these modifications and variations are also within the scope of the present application.

[0069] The preferred embodiments of the present application are described above with reference to the accompanying drawings. Many features and advantages of these embodiments are clear from this detailed description, and therefore the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. In addition, since many modifications and changes are easily conceivable to those skilled in the art, the embodiments of the present application are not intended to be limited to the precise structures and operations illustrated and described, but all suitable modifications and equivalents that fall within their scope may be covered.

Claims

1. A motor, comprising a stator core and a busbar assembly disposed on one axial side of the stator core, The bus bar assembly includes a bus bar holder and a bus bar partially embedded in the bus bar holder, the bus bar including a claw portion exposed from the bus bar holder, The teeth of the stator core are insulated from the coils wound around the teeth by an insulator. Features: The busbar holder includes an annular main body; The main body portion and the insulating member are opposed to each other in the radial direction.

2. The motor according to claim 1, characterized in that The main body portion of the bus bar holder is located radially outward of the insulating member.

3. The motor according to claim 2, characterized in that The opening of the claw portion faces radially inward.

4. The motor according to claim 2, characterized in that The inner peripheral surface of the main body of the bus bar holder has a convex portion, and the outer peripheral surface of a portion of the insulating member that faces the main body in a radial direction has a concave portion that fits with the convex portion.

5. The motor according to claim 1, characterized in that The bus bar portion embedded in the main body of the bus bar holder is a sheet-like structure, and an extended surface thereof is parallel to the central axis of the motor.

6. The motor according to claim 1, characterized in that The projections of the bus bar portion embedded in the main body of the bus bar holder in the axial direction are located on the same circumference with the same radial dimension.

7. The motor according to claim 1, characterized in that There are a plurality of bus bars, and the claws of the plurality of bus bars have the same height in the axial direction.

8. The motor according to claim 1, characterized in that The main body portion of the bus bar holder is located radially inward of the insulator.

9. The motor according to claim 8, characterized in that The opening of the claw portion faces radially outward.

10. An electrical product, characterized in that: The electrical product comprises the motor according to any one of claims 1-9.

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