Motor and electrical product

Abstract

The embodiment of the invention provides a motor and an electrical product, and the motor comprises a main body part which comprises a rotor and a stator; a housing which has a cylindrical shape extending in the axial direction, has a bottom and an opening, and accommodates the main body part; a bus bar assembly positioned on the axial upper side of the main body part; and a cover part which is located on the axial upper side of the bus bar assembly and covers the opening of the housing. Wherein a groove is formed in the upper surface of the bus bar assembly, a first through hole opposite to the groove in the axial direction is formed in the cover part, and the motor is connected with external equipment through the groove and the first through hole. According to the embodiment of the invention, the motor is connected with the external equipment through the groove and the first through hole, and a part of the external equipment can be accommodated in the bus bar assembly, so that the axial size of the motor is 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, in order to connect or fix the motor to an external device, a component for connecting or fixing the motor to the external device needs to be provided on the cover of the motor. This requires the motor to have a certain height in the axial direction, which affects the miniaturization design of the motor.

[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 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 simply because they are described in the background technology section of the present application. Summary of the invention

[0004] The inventors have discovered that in the existing motor structure, when an external device is connected to the motor, it occupies the axial dimension of the motor, 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 providing a through hole in the motor cover and providing a groove axially opposite to the through hole on the upper surface of the busbar assembly, and connecting with an external device through the through hole and the groove. Thus, a part of the external device is accommodated in the busbar assembly, thereby reducing the axial size of the motor and miniaturizing the motor.

[0006] According to a first aspect of an embodiment of the present application, a motor is provided, the motor comprising:

[0007] a main body including a rotor and a stator;

[0008] The housing is in the shape of a cylinder extending in the axial direction, has a bottom and an opening, and contains the main body;

[0009] a bus bar assembly located at an axially upper side of the main body; and

[0010] a cover portion, which is located on the axial upper side of the busbar assembly and covers the opening of the housing;

[0011] in:

[0012] The upper surface of the busbar assembly is provided with a groove,

[0013] The cover portion is formed with a first through hole which is axially opposite to the groove.

[0014] The motor is connected to an external device through the groove and the first through hole.

[0015] In one or more embodiments, an inner surface of the first through hole is formed with an internal thread for threaded connection with the external device.

[0016] In one or more embodiments, a coupling portion is disposed in the first through hole, and the motor is connected to the external device through the groove, the first through hole, and the coupling portion.

[0017] In one or more embodiments, the connecting portion also has a coupling portion configured in the first through hole, the coupling portion having a small diameter portion and a large diameter portion, the small diameter portion passes through the first through hole and is located on the axial upper side of the cover portion, and the large diameter portion is located on the axial lower side of the cover portion.

[0018] In one or more embodiments, the coupling portion has a second through hole that penetrates the coupling portion in the axial direction and is axially opposite to the groove, and an internal thread for threaded connection with the external device is formed on an inner surface of the second through hole.

[0019] In one or more embodiments, a recess is further provided on the upper surface of the busbar assembly, the groove is located in the recess, and the large diameter portion of the coupling portion is at least partially located in the recess.

[0020] In one or more embodiments, a diameter of an inscribed circle of the groove is greater than or equal to an inner diameter of the coupling portion.

[0021] In one or more embodiments, the bus bar assembly includes a bus bar holder and a bus bar embedded in the bus bar holder, and the bus bar is axially offset from the groove.

[0022] 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.

[0023] One of the beneficial effects of the embodiments of the present application is that by providing a through hole on the motor cover and providing a groove axially opposite to the through hole on the upper surface of the busbar assembly, the motor is connected to an external device via the groove and the through hole, so that a part of the external device can be accommodated in the busbar assembly, thereby reducing the axial size of the motor and miniaturizing the motor.

[0024] 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.

[0025] 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

[0026] 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:

[0027] Figure 1 is a schematic diagram of a motor according to an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A cross-sectional view of the motor shown;

[0029] Figure 3 yes Figure 1 A schematic diagram of the motor shown with the cover removed;

[0030] Figure 4 yes Figure 1 A schematic diagram of the cover portion of the motor shown;

[0031] Figure 5 is a schematic diagram of a coupling portion of an embodiment of the present application;

[0032] Figure 6 is a cross-sectional view of a coupling portion of an embodiment of the present application;

[0033] Figure 7 It is a schematic diagram of a portion of the motor without the cover according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] The implementation of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0039] Embodiments of the first aspect

[0040] An embodiment of the present application provides a motor.

[0041] Figure 1 It is a schematic diagram of a motor according to an embodiment of the present application. Figure 2 yes Figure 1 A cross-sectional view of the motor is shown. Figure 3 yes Figure 1 A schematic diagram of the motor shown with the cover removed. Figure 4 yes Figure 1 A schematic diagram of the cover portion of the motor is shown.

[0042] like Figures 1 to 3 As shown, in the embodiment of the present application, the motor 100 includes: a main body 10 ( Figure 1), a housing 20 accommodating the main body 10, a bus bar assembly 30 located axially above the main body 10, and a cover 40 (not shown) covering the opening of the motor housing Figure 3 not shown).

[0043] like Figure 2 As shown, the main body 10 includes a rotor 11 and a stator 12. The rotor 11 may include a rotating shaft, a rotor core, and a plurality of rotor magnets, etc., and the stator 12 may include a stator core, a coil, and an insulating member, etc., and specific details may be referred to in the relevant art. In addition, the main body 10 may also include other components such as bearings, and specific details may be referred to in the relevant art.

[0044] like Figures 1 to 3 As shown, the shell 20 is in a cylindrical shape extending in the axial direction, has a bottom and an opening, and surrounds the main body 10 and is located radially outside the main body 10 .

[0045] like Figure 1 and Figure 2 As shown, the cover 40 covers the opening of the housing 20 .

[0046] In the embodiments of the present application, Figure 3 As shown, the upper surface of the busbar assembly 30 is provided with a groove 31 , and the cover 40 is formed with a first through hole 41 axially opposite to the groove 31 , and the motor 100 is connected to an external device via the groove 31 and the first through hole 41 .

[0047] According to the above embodiment, a through hole is provided on the motor cover, and a groove axially opposite to the through hole is provided on the upper surface of the bus bar assembly. The motor is connected to an external device through the groove and the through hole. Thus, a part of the external device can be accommodated in the bus bar assembly, thereby reducing the axial dimension of the motor and miniaturizing the motor.

[0048] exist Figure 3 In the example, a circular groove 31 is taken as an example, but the present application is not limited thereto. The groove 31 may also be in other shapes, such as a polygon or an irregular shape, as long as it is recessed axially downward relative to the upper surface of the busbar assembly 30. Figure 3 In the example, three grooves 31 are shown, and the present application does not limit the number of grooves 31. Since the grooves 31 are used to connect the motor to the external device, their number, position and shape depend on the requirements of the external device.

[0049] In the above embodiment, the first through hole 41 is axially opposite to the groove 31, and the number and position of the first through hole 41 correspond to the groove 31. The present application does not limit the method for forming the first through hole 41. For example, the cover 40 may be formed first, and then the first through hole 41 penetrating the cover 40 in the axial direction may be formed in the cover 40 by stamping or the like. Figure 4Alternatively, the cover portion 40 may be formed by mold casting or the like, wherein the cover portion 40 has a radially extending portion and an axially extending portion, and the axially extending portion has a first through hole 41 penetrating in the axial direction, and the axially extending portion is, for example, Figure 5 The structure shown in FIG. 1 will be described in detail later. In addition, the shape of the cross section of the first through hole 41 depends on the connection requirements of the external device and can be as follows: Figure 4 The circular shape shown can also be other shapes.

[0050] In the above embodiment, the motor 100 is connected to the external device through the groove 31 and the first through hole 41, and the connection methods include but are not limited to threaded connection, riveting, glue injection, press-fit connection, snap-fit ​​connection, etc. The following examples are given.

[0051] In some embodiments, an inner surface of the first through hole 41 is formed with an internal thread for threaded connection with an external device. Thus, the motor 100 is threadedly connected with an external device only through the groove 31 and the first through hole 41 .

[0052] For example, the external device is screwed into the first through hole 41 through a bolt having an external thread, and extends into the groove 31 of the busbar assembly 30 inside the motor 100, thereby achieving a threaded connection.

[0053] Furthermore, in the case where the first through hole 41 is formed in the portion extending in the axial direction in the above example, the connection length with the external device is increased, and the connection strength and stability are further improved.

[0054] In other embodiments, Figure 1 and Figure 2 As shown, a coupling portion 51 is provided in the first through hole 41, whereby the motor 100 is connected to an external device through the groove 31, the first through hole 41 and the coupling portion 51. For example, in the case where the first through hole 41 is formed by stamping the cover portion 40, by providing the coupling portion 51 in the first through hole 41, the connection length for connecting with an external device is increased.

[0055] Figure 5 It is a schematic diagram of the coupling portion 51 of an embodiment of the present application. Figure 6 4 is a cross-sectional view of the coupling portion 51 according to the embodiment of the present application.

[0056] In some embodiments, Figure 5 and Figure 6 As shown, the coupling portion 51 has a small diameter portion 511 and a large diameter portion 512. Figure 2As shown, the small diameter portion 511 passes through the first through hole 41 and is located on the axial upper side of the cover 40, and the large diameter portion 512 is located on the axial lower side of the cover 40. Thus, the connection length between the motor and the external device can be increased without increasing the axial size of the motor, further improving the strength and stability of the connection.

[0057] In the above embodiment, if Figure 5 As shown, the small diameter portion 511 and the large diameter portion 512 are cylindrical. The outer diameter of the small diameter portion 511 is less than or equal to the inner diameter of the first through hole 41, and the outer diameter of the large diameter portion 512 is greater than the inner diameter of the first through hole 41, thereby making it easy for the small diameter portion 511 to pass through the first through hole 41, while preventing the large diameter portion 512 from passing out of the first through hole 41.

[0058] In some embodiments, Figure 6 As shown, the inner diameters of the small diameter portion 511 and the large diameter portion 512 are the same. Since the small diameter portion 511 and the large diameter portion 512 are both cylindrical, they both have through holes. The through holes of the small diameter portion 511 and the through holes of the large diameter portion 512 together constitute the second through hole 514 of the coupling portion 51. That is, as the coupling portion 51, there is a second through hole 514 that penetrates along the axial direction and is axially opposite to the groove 31. The inner surface of the second through hole 514 is formed with an internal thread for threaded connection with an external device. As a result, the external device can be screwed into the second through hole 514 by a bolt with an external thread, and extend into the groove 31 of the busbar assembly 30 inside the motor 100, thereby achieving a threaded connection.

[0059] In the above embodiment, there is no limitation on the connection method between the coupling part 51 and the cover part 40. For example, the coupling part 51 can be riveted to the first through hole 41 of the cover part 40, or can be welded to the first through hole 41 of the cover part 40, etc.

[0060] In some embodiments, Figure 5 and Figure 6 As shown, the coupling part 51 also has an extrusion part 513. The extrusion part 513 is located between the small diameter part 511 and the large diameter part 512 in the axial direction. When the coupling part 51 is riveted to the first through hole 41 of the cover part 40, the cover part 40 is deformed by the extrusion part 513, so that the coupling part 51 and the cover part 40 are riveted as one. In addition, after the coupling part 51 and the cover part 40 are riveted, the extrusion part 513 can also prevent the coupling part 51 from rotating relative to the cover part 40.

[0061] Figure 7 It is a schematic diagram of a part of a motor without a cover according to an embodiment of the present application, showing a bus bar assembly 30 .

[0062] In some embodiments, Figure 7As shown, the upper surface of the busbar assembly 30 is further provided with a recess 32, and the recess 31 is located in the recess 32. That is, in the axial direction, the lower surface of the recess 31 is located below the lower surface of the recess 32, that is, the height of the lower surface of the recess 31 is lower than the height of the lower surface of the recess 32. The large diameter portion 512 of the coupling portion 51 is at least partially accommodated in the recess 32. As a result, the axial dimension of the motor can be further reduced.

[0063] In the above embodiment, the cross section of the recess 32 may be Figure 7 The radially extending rectangle shown may also be a circle or a polygon, as long as the inscribed circle is larger than the outer diameter of the large diameter portion 512 so that the large diameter portion 512 can be located in the recess 32. The present application does not impose any limitation on this.

[0064] In some embodiments, the diameter of the inscribed circle of the groove 31 is greater than or equal to the inner diameter of the coupling portion 51 (ie, the outer diameter of the second through hole 514). Thus, when the external device is connected to the motor 100 by bolts, a space for accommodating the bolts used to connect the external device can be provided.

[0065] In some embodiments, Figure 2 As shown, the bus bar assembly 30 includes a bus bar holder 33 made of resin and a bus bar 34 partially held by the bus bar holder 33. The bus bar 34 is axially offset from the groove 31, that is, the bus bar 34 is not axially below the groove 31. Thus, it is possible to prevent the bolts used to connect the external device from being too close to the bus bar and interfering with it.

[0066] 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.

[0067] 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.

[0068] According to an embodiment of the present application, a through hole is provided on the motor cover, and a groove axially opposite to the through hole is provided on the upper surface of the busbar assembly. The motor is connected to an external device via the groove and the through hole, so that a part of the external device can be accommodated in the busbar assembly, thereby reducing the axial dimension of the motor and miniaturizing the motor.

[0069] Embodiments of the second aspect

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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 main body including a rotor and a stator; The housing is in the shape of a cylinder extending in the axial direction, has a bottom and an opening, and contains the main body; a bus bar assembly located at an axially upper side of the main body; and a cover portion, which is located on the axial upper side of the busbar assembly and covers the opening of the housing; Features: The upper surface of the busbar assembly is provided with a groove, The cover portion is formed with a first through hole which is axially opposite to the groove. The motor is connected to an external device through the groove and the first through hole.

2. The motor according to claim 1, characterized in that An internal thread for threaded connection with the external device is formed on the inner surface of the first through hole.

3. The motor according to claim 1, characterized in that A coupling portion is provided in the first through hole, The motor is connected to the external device through the groove, the first through hole, and the coupling portion.

4. The motor according to claim 3, characterized in that The coupling portion has a small diameter portion and a large diameter portion, The small diameter portion passes through the first through hole and is located on the axial upper side of the cover portion, and the large diameter portion is located on the axial lower side of the cover portion.

5. The motor according to claim 3, characterized in that The coupling portion has a second through hole that penetrates in the axial direction and is axially opposite to the groove. An internal thread for threaded connection with the external device is formed on the inner surface of the second through hole.

6. The motor according to claim 3, characterized in that The upper surface of the busbar assembly is further provided with a recessed portion, the groove is located in the recessed portion, and the large diameter portion of the coupling portion is at least partially located in the recessed portion.

7. The motor according to claim 5, characterized in that The diameter of the inscribed circle of the groove is greater than or equal to the inner diameter of the coupling portion.

8. The motor according to claim 1, characterized in that The bus bar assembly includes a bus bar holder and a bus bar embedded in the bus bar holder, The bus bar and the groove are staggered in the axial direction.

9. An electrical product, characterized in that: The electrical product comprises the motor according to any one of claims 1 to 8.

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