CN213367512U - Motor and electric product - Google Patents

Abstract

The embodiment of the application provides a motor and electric product, the motor includes: the stator is arranged on the upper surface of the cover part, and the bus bar holder is arranged on the upper surface of the cover part; the outer periphery of the cover part is in interference fit with the inner periphery of the cylindrical part of the shell through a first bending structure; the bus bar holder is provided with an annular part and a supporting part which extends axially downwards from the outer periphery of the annular part and is supported on the outer periphery of the stator; the first bending structure is radially opposed to at least a part of an upper side of the support portion of the bus bar holder. Therefore, the axial distance of the motor is shortened, the protruding part of the motor is reduced when the motor is installed on the client, and the interference fit capable of keeping the concentricity is realized.

Description

Motor and electric product

Technical Field

The embodiment of the application relates to the field of electromechanics, in particular to a motor and an electric product.

Background

In a conventional motor structure, a casing is formed in a cylindrical shape, a lid is fitted into the casing, and a bearing is located on an upper side in an axial direction of the lid and fixed to the upper side in the axial direction than a main body portion of the lid. When the motor is mounted to the client through the fixing edge, the entire motor protrudes outward from the fixing edge with respect to the client.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

SUMMERY OF THE UTILITY MODEL

In order to reduce the size of a part of the motor protruding out of the client side after the motor is installed on the client side, the embodiment of the application provides the motor and an electric product.

According to an aspect of an embodiment of the present application, there is provided a motor including:

a rotor that rotates about a central axis;

a stator located radially outside the rotor, disposed to face the rotor, and having a plurality of coils wound around the stator;

a housing having a radially expanded flat plate portion, a cylindrical portion extending from a radially outer edge of the flat plate portion to an axially upper side, and a housing fixing edge extending from the axially upper side of the cylindrical portion to a radially outer side, thereby forming an opening portion opened to the axially upper side, the radially inner side of the cylindrical portion accommodating the stator and the rotor, the motor being attached to a client via the housing fixing edge;

a bus bar holder disposed on an upper side in an axial direction of the stator; and

a cover portion disposed on an upper side in an axial direction of the bus bar holder and covering the opening portion of the housing,

wherein:

the casing is fixed along the axial lower side of the upper surface of the cover part;

the outer periphery of the cover part is in interference fit with the inner periphery of the cylindrical part of the shell through a first bending structure;

the bus bar holder has an annular portion and a support portion extending axially downward from an outer periphery of the annular portion and supported on an outer periphery of the stator;

the first bent structure is radially opposed to at least a part of an upper side of the support portion of the bus bar holder.

In some embodiments, an upper end of the support portion of the bus bar holder is of a constricted portion structure with respect to a lower end, forming a constricted portion; the first bending structure is radially opposite to at least a portion of the necking part.

In some embodiments, the cylindrical portion of the housing has an enlarged diameter portion; the diameter-expanding portion is radially opposed to at least a part of the constricted portion; the first bending structure is in interference fit with the inner circumference of the diameter expanding part.

In some embodiments, the cylindrical portion of the casing further has a small diameter portion and an inclined portion between the small diameter portion and the enlarged diameter portion, the inclined portion being radially opposed to at least a part of the constricted portion of the support portion.

In some embodiments, the cylindrical portion of the housing has a small diameter portion, and an inner circumferential surface of the first bending structure of the cover portion and an inner circumferential surface of the small diameter portion are located on the same circumferential surface.

In some embodiments, the motor further comprises:

the bearing is located on the lower side of the upper surface of the cover, the cover is further provided with a second bending structure, and the second bending structure is located inside the cover and in interference fit with the outer peripheral surface of the bearing.

In some embodiments, the cover further has a cover fixing rim, and the cover fixing rim and the case fixing rim are fixed together in the axial direction.

According to another aspect of the embodiments of the present application, there is provided an electric product including the aforementioned motor.

One of the beneficial effects of the embodiment of the application lies in: according to the embodiment of the application, the axial distance of the motor is shortened, the protruding part of the motor is reduced when the motor is installed on the client side, and the interference fit capable of keeping the concentricity is realized.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a motor according to an embodiment of the present application;

FIG. 2 is a schematic view of an axial cross-section of the motor shown in FIG. 1;

fig. 3 is a schematic view of a bus bar holder of the motor according to the embodiment of the present application;

fig. 4 is a schematic view of an axial cross section of a cover portion of a motor according to an embodiment of the present application.

Detailed Description

The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.

In embodiments of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

In the embodiments of the present application, the singular forms "a", "an", and the like may include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

In addition, in the following description of the present application, a direction extending along the central axis O of the motor or a direction parallel thereto is referred to as an "axial direction" for convenience of description; a direction from the bottom portion (flat plate portion) of the motor to the cover portion of the motor is referred to as "upper" or "upper side" or "axially upper side", and a direction from the cover portion of the motor to the bottom portion (flat plate portion) of the motor is referred to as "lower" or "lower side" or "axially lower side"; a radial direction centered on the central axis O is referred to as a "radial direction"; the direction close to the central axis O is referred to as "radially inward"; the direction away from the central axis O is referred to as "radially outward"; the direction around the center axis O is referred to as "circumferential direction". It should be noted that these are for convenience of illustration only and do not limit the orientation of the motor during use and manufacture.

Embodiments of the present application will be described below with reference to the drawings.

Embodiments of the first aspect

The embodiment of the application provides a motor.

Fig. 1 is a schematic view of a motor according to an embodiment of the present application, showing the motor viewed from an axially upper side with a cover removed, and fig. 2 is a schematic view of an axial cross section of the motor shown in fig. 1. As shown in fig. 1 and 2, the motor includes: rotor 10, stator 20, casing 30, bus bar holder 40, and cover 50. The rotor 10 rotates about the center axis O. The stator 20 is positioned radially outside the rotor 10, is disposed to face the rotor 10, and has a plurality of coils wound around the stator 20. As shown in fig. 2, the housing 30 has a flat plate portion 31 that is radially expanded, a cylindrical portion 32 that extends axially upward from a radially outer edge of the flat plate portion 31, and a housing fixing edge 33 that extends radially outward from an axially upper side of the cylindrical portion 32, thereby forming an opening portion 34 that is open axially upward, and the stator 20 and the rotor 10 are accommodated radially inward of the cylindrical portion 32; the motor is mounted to the customer end through a cabinet mounting rim 33. As shown in fig. 1 and 2, the bus bar holder 40 is disposed on the upper side in the axial direction of the stator 20. As shown in fig. 2, the cover 50 is disposed on the upper side in the axial direction of the bus bar holder 40, and covers the opening 34 of the housing 30; the cover 50 is made of a metal material.

In the embodiment of the present application, as shown in fig. 2, the case fixing rim 33 is located on the axially lower side of the upper surface of the cover 50; the outer periphery of the cover 50 is in interference fit with the inner periphery of the cylindrical part 32 of the housing 30 through the first bending structure 51; the bus bar holder 40 has an annular portion 41 and a support portion 42 extending axially downward from the outer periphery of the annular portion 41 and supported on the outer periphery of the stator 20; the first bent structure 51 is radially opposed to at least a part of the upper side of the support portion 42 of the bus bar holder 40, that is, viewed in one of the radial directions (direction D shown in fig. 2), and a part of the support portion 42 and a part of the first bent structure 51 are overlapped with each other, that is, the first bent structure 51 is located axially above at least a part of the support portion 42 of the bus bar holder 40. By the structure, the axial distance between two ends of the motor is shortened, so that the protruding part of the motor is reduced when the motor is installed on the client side, and the interference fit capable of keeping the concentricity is realized.

In the above embodiment, the upper surface of the lid 50 refers to the upper surface of the main body of the lid 50, and for example, the surface S1 shown in fig. 2 or the surface S2 shown in fig. 2 may be regarded as the upper surface of the lid 50.

In the present embodiment, the main body of the cover 50 is a portion of the cover 50 axially facing the radially inner side of the cylindrical portion 32 of the housing 30, that is, a portion of the cover 50 covering the housing opening 34.

Fig. 3 is a schematic view of a bus bar holder 40 of a motor according to an embodiment of the present invention, and as shown in fig. 3, in some embodiments, an upper end of a support portion 42 of the bus bar holder 40 is in a constricted portion structure with respect to a lower end, forming a constricted portion 421. As shown in fig. 2, the first bending structure 51 is radially opposed to at least a part of the constricted portion 421. That is, at least a portion of the constriction 421 coincides with at least a portion of the first bending structure 51, as viewed in the direction D. With this structure, the first bending structure 51 can be prevented from interfering with the bus bar holder 40 when the cover 50 is press-fitted into the housing 30.

In some embodiments, as shown in fig. 2, the cylindrical portion 32 of the housing 30 has an enlarged diameter portion 321; the enlarged diameter portion 321 is radially opposed to at least a part of the constricted portion 421, that is, at least a part of the enlarged diameter portion 321 and at least a part of the constricted portion 421 overlap each other as viewed in the direction D. Further, the first bending structure 51 is interference-fitted to the inner periphery of the enlarged diameter portion 321. With this structure, the radial distance between the first bent structure 51 and the bus bar holder 40 is further increased, and interference therebetween is prevented.

In some embodiments, as shown in fig. 2, the cylindrical portion 32 of the housing 30 further has a small diameter portion 322 and an inclined portion 323 between the small diameter portion 322 and the enlarged diameter portion 321, the inclined portion 323 being radially opposed to at least a part of the constricted portion 421 of the support portion 42. That is, at least a portion of the inclined portion 323 and at least a portion of the constricted portion 421 coincide as viewed in the direction D. With this structure, the first bending structure 51 can be prevented from being pressed into the bottom of the support portion 42 of the bus bar holder 40 and interfering with the support portion 40 when the cover 50 is pressed into the housing 30, and the first bending structure 51 can be prevented from coming into contact with the housing 30 in the axial direction when the cover 50 is pressed into the housing 30.

In some embodiments, as shown in fig. 2, the inner peripheral surface S3 of the first bending structure 51 of the cover 50 is located on the same peripheral surface as the inner peripheral surface S4 of the small diameter portion 322. With this configuration, it is possible to simplify the size management at the time of design, to make the inner periphery of the lid 50 less likely to interfere with the bus bar holder 40, and to avoid the deformation of the inner periphery of the lid 50 due to the presence of the first bent structure 51.

In some embodiments, as shown in fig. 2, the motor further includes a bearing 60 located at a lower side of the upper surface of the cover 50, and the cover 50 further has a second bending structure 52, the second bending structure 52 being located inside the cover 50 and interference-fitted with an outer circumferential surface of the bearing 60. With this structure, the axial dimension of the motor can be further reduced.

In the above embodiment, the upper surface of the cover 50 refers to the upper surface of the main body of the cover 50, and the main body of the cover 50 refers to the portion of the cover 50 axially facing the radially inner side of the cylindrical portion 32 of the housing 30, that is, the portion of the cover 50 covering the housing opening 34. As previously described S1 or S2. In the above embodiment, the inside of the lid 50 refers to the inside of the main body of the lid 50.

Fig. 4 is a schematic view of an axial cross section of the cover 50 of the motor of the embodiment of the present application, as shown in fig. 2 and 4, and in some embodiments, the cover 50 further has a cover fixing rim 53, as shown in fig. 2, the cover fixing rim 53 and the housing fixing rim 33 being fixed together in the axial direction. With this configuration, the housing fixing edge 33 positioned on the outer periphery of the housing 30 and fixed to the client can be fixed to the cover 50, and the space inside the housing 30 can be saved.

In the embodiment of the present application, as shown in fig. 4, the first bending structure 51 is, for example, a double-bending structure formed by bending the outer periphery of the main body of the cover 50 toward the axial lower side first and then bending the main body of the cover 50 toward the axial upper side in the opposite direction, and the axial upper side of the double-bending structure is located on the axial lower side of the upper surface of the main body of the cover 50.

In the embodiment of the present application, as shown in fig. 4, the second bending structure 52 is, for example, a double-bending structure formed by bending the main body of the cover portion 50 once toward the axial lower side and then bending the main body of the cover portion twice toward the axial upper side, and the whole second bending structure 52 is located on the lower side of the upper surface of the main body of the cover portion 50.

It is to be noted that the above merely exemplifies the structure of the motor related to the present application, but the present application is not limited thereto, and appropriate modifications may be made on the basis of the above respective 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 may also refer to the related art; it is also possible to add components not shown in fig. 1 to 4 or to reduce one or more components in fig. 1 to 4. Regarding other configurations and structures of the motor, reference may be made to the related art, and description thereof is omitted here.

According to the embodiment of the application, the axial distance of the motor is shortened, the protruding part of the motor is reduced when the motor is installed on the client side, and the interference fit capable of keeping the concentricity is realized.

Embodiments of the second aspect

Embodiments of the present application provide an electrical product having a motor as described in embodiments of the first aspect. Since the structure of the motor has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.

In the embodiment of the present invention, the electric product may be any electric device provided with a motor, for example, 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, or other household appliances, or an industrial device such as a pump, a conveyor, an elevator, a standard industrial universal machine, a wind power generator, a grinding machine, a traction motor, or various information processing devices, or may be various parts of an automobile, such as an automobile electric power steering system, an automobile sunroof adjusting part, a seat adjusting part, a transmission, a brake device, or the like.

The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.

Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the present application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.

Claims (8)

1. A motor, the motor comprising:

a rotor that rotates about a central axis;

a stator located radially outside the rotor, disposed to face the rotor, and having a plurality of coils wound around the stator;

a housing having a radially expanded flat plate portion, a cylindrical portion extending from a radially outer edge of the flat plate portion to an axially upper side, and a housing fixing edge extending from the axially upper side of the cylindrical portion to a radially outer side, thereby forming an opening portion opened to the axially upper side, the radially inner side of the cylindrical portion accommodating the stator and the rotor, the motor being attached to a client via the housing fixing edge;

a bus bar holder disposed on an upper side in an axial direction of the stator; and

a cover portion disposed on an upper side in an axial direction of the bus bar holder and covering the opening portion of the housing,

the method is characterized in that:

the casing is fixed along the axial lower side of the upper surface of the cover part;

the outer periphery of the cover part is in interference fit with the inner periphery of the cylindrical part of the shell through a first bending structure;

the bus bar holder has an annular portion and a support portion extending axially downward from an outer periphery of the annular portion and supported on an outer periphery of the stator;

the first bent structure is radially opposed to at least a part of an upper side of the support portion of the bus bar holder.

2. The motor of claim 1,

the upper end of the support part of the bus bar holder is of a necking structure relative to the lower end to form a necking part;

the first bending structure is radially opposite to at least a portion of the necking part.

3. The motor of claim 2,

the cylindrical portion of the housing has an enlarged diameter portion;

the diameter-expanding portion is radially opposed to at least a part of the constricted portion;

the first bending structure is in interference fit with the inner circumference of the diameter expanding part.

4. The motor of claim 3,

the cylindrical portion of the housing further includes a small diameter portion and an inclined portion located between the small diameter portion and the enlarged diameter portion, the inclined portion being radially opposed to at least a part of the constricted portion of the support portion.

5. The motor of claim 1,

the cylindrical portion of the housing has a small diameter portion, and an inner circumferential surface of the first bent structure of the lid portion and an inner circumferential surface of the small diameter portion are located on the same circumferential surface.

6. The motor of claim 1, further comprising:

the bearing is located on the lower side of the upper surface of the cover, the cover is further provided with a second bending structure, and the second bending structure is located inside the cover and in interference fit with the outer peripheral surface of the bearing.

7. The motor of claim 1,

the cover part is also provided with a cover part fixing edge, and the cover part fixing edge and the machine shell fixing edge are fixed together in the axial direction.

8. An electrical product, characterized in that it comprises a motor according to any one of claims 1 to 7.

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