CN215221903U

CN215221903U - Motor and drive component

Info

Publication number: CN215221903U
Application number: CN202120661935.XU
Authority: CN
Inventors: 刘慧�; 王鑫; 李萃; 李超
Original assignee: Nidec Corp
Current assignee: Nidec Corp
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-17
Anticipated expiration: 2031-03-31

Abstract

The embodiment of the application provides a motor and a driving part. The motor comprises a tubular housing and a brush disc arranged on the tubular housing, wherein a plurality of positioning parts arranged along the circumferential direction are formed on the inner surface of the housing, the plurality of positioning parts comprise a first positioning part and a second positioning part, the first positioning part comprises a supporting surface, and the second positioning part comprises a hook surface; the brush tray has a first positioned portion that is engaged with the first positioning portion and a second positioned portion that is engaged with the second positioning portion. According to this application embodiment, through set up on the casing of motor in the axial top to reciprocal, in the location portion of upwards misplacing in circumference, and set up on the brush dish with location portion matched with by location portion, can prevent that the brush dish from being excessively impressed the casing and deviating from the opening of casing to location portion and the portion of being positioned through the circumference dislocation have improved the degree of freedom of design, the equipment of being convenient for.

Description

Motor and drive component

Technical Field

The embodiment of the application relates to the field of electromechanics, in particular to a motor and a driving component.

Background

In an existing ABS (antilock brake system) motor, a brush plate is covered at an opening of a housing of the motor, and the brush plate serves as a cover of the motor. Typically, the brush plate is press fit into the housing opening with an interference fit. The inner peripheral surface of the housing is provided with a support portion projecting radially inward, and the outer periphery of the brush disk is provided with a projecting portion which is mounted on the support portion to axially support the brush disk.

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

The inventors have found that when the structure proposed by the background art is adopted, there is a possibility that the brush tray may come out of the opening of the housing in the case where the interference fit of the brush tray with the housing of the motor is not sufficiently reliable.

To solve the above technical problems or other problems, embodiments of the present application provide a motor and a driving part.

According to an aspect of the embodiments of the present application, there is provided a motor having a cylindrical housing and a brush tray disposed in the cylindrical housing,

a plurality of positioning parts arranged along the circumferential direction are formed on the inner surface of the shell, the plurality of positioning parts comprise a first positioning part and a second positioning part, the first positioning part is provided with a supporting surface, and the second positioning part is provided with a hook surface;

the brush tray has a first positioned portion that is engaged with the first positioning portion and a second positioned portion that is engaged with the second positioning portion.

In some embodiments, the first positioning portion and the second positioning portion are the same in shape and are each an axially asymmetric structure, and the positioning directions of the first positioning portion and the second positioning portion with respect to the brush disk are opposite in the axial direction.

In some embodiments, the first positioning portion and the second positioning portion are disposed at axially equal heights, and the supporting surface and the hooking surface are located at axially different heights.

In some embodiments, the brush tray is disposed at an opening of the cylindrical housing and covers the opening.

In some embodiments, the first positioning portion and the second positioning portion are protrusions protruding toward an inner side of a casing, the supporting surface is an upper surface of the first positioning portion, supports the first positioned portion, the hooking surface is a lower surface of the second positioning portion, hooks the second positioned portion, and the second positioned portion is a hooked portion extending from the brush tray toward an axially lower side and protruding toward a radially outer side;

the first positioning part is also provided with an inclined plane part which connects the outermost end of the supporting surface and the inner peripheral wall of the machine shell, and the second positioning part is also provided with an inclined plane part which connects the outermost end of the hooking surface and the inner peripheral wall of the machine shell.

In some embodiments, an axially upper end of a radially outwardly projecting portion of the hooked portion is press-fitted with the hooking surface.

In some embodiments, a portion of the hooked portion that projects toward the radially outer side has a slope that slopes toward the axially lower side and the radially inner side from where the hooking face is press-fitted.

In some embodiments, a portion of the hooked portion that projects toward the radially outer side has an abutment inclined surface that is inclined from the radially outermost end toward the axially upper side and toward the radially inner side, the hooking surface abutting against the abutment inclined surface.

In some embodiments, the motor further has a rotor located inside the housing and a magnet disposed diametrically opposite the rotor,

the distance from the edge of the axial lower side of the hooking surface to the edge of the axial upper side of the magnet is greater than the distance from the edge of the axial lower side of the hooking surface to the edge of the axial lower side of the second positioned part;

the edge of the second positioned portion on the inner side in the radial direction is located radially outward of the edge of the magnet on the inner side in the radial direction.

According to another aspect of the embodiments of the present application, there is provided a driving part having the motor of any one of the previous embodiments.

One of the beneficial effects of the embodiment of the application lies in: according to this application embodiment, through set up on the casing of motor in the axial top to reciprocal, in the location portion of upwards misplacing in circumference, and set up on the brush dish with location portion matched with by location portion, can prevent that the brush dish from being excessively impressed the casing and deviating from the opening of casing to location portion and the portion of being positioned through the circumference dislocation have improved the degree of freedom of design, the equipment of being convenient for.

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 one example of a motor of an embodiment of the present application;

FIG. 2 is a schematic view of one example of a housing of the motor shown in FIG. 1;

FIG. 3 is a top view of the motor shown in FIG. 1;

FIG. 4 is a schematic view of the motor as viewed along line A-A of FIG. 3;

FIG. 5 is a schematic view of the motor as viewed along line B-B of FIG. 3;

fig. 6 is a partially enlarged schematic view of a portion C shown in fig. 5;

fig. 7 is a partially enlarged schematic view of a portion D shown in fig. 5.

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 pointing from the bottom of the housing of the motor toward the brush plate is referred to as an "axially upper side"; the direction from the brush tray toward the bottom of the motor case is referred to as "axial 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 one example of a motor of an embodiment of the present application. As shown in fig. 1, the motor according to the embodiment of the present invention includes a cylindrical housing 10 and a brush holder 20 disposed in the cylindrical housing.

Fig. 2 is a schematic view of an example of the casing 10 of the motor shown in fig. 1, and as shown in fig. 2, in the present embodiment, a plurality of positioning portions 11 arranged along the circumferential direction are formed on the inner surface of the casing 10, the plurality of positioning portions 11 include a first positioning portion 11-1 and a second positioning portion 11-2, the first positioning portion 11-1 includes a supporting surface S1, and the second positioning portion 11-2 includes a hook surface S2.

Fig. 3 is a plan view of the motor shown in fig. 1, fig. 4 is a schematic view of the motor as viewed along line a-a shown in fig. 3, and fig. 5 is a schematic view of the motor as viewed along line B-B shown in fig. 3. As shown in fig. 3 to 5, in the embodiment of the present application, brush tray 20 has first positioned portion 21 that fits with first positioning portion 11-1 and second positioned portion 22 that fits with second positioning portion 11-2.

In the embodiment of the present application, the first positioning portion 11-1 and the second positioning portion 11-2 are arranged at intervals in the circumferential direction, and accordingly, the first positioned portion 21 engaged with the first positioning portion 11-1 and the second positioned portion 22 engaged with the second positioning portion 11-2 are also arranged at intervals in the circumferential direction. Fig. 2 shows a case where every two first positioning portions 11-1 and every one second positioning portion 11-2 are arranged at intervals, but the present application is not limited thereto, and may be arranged where every two second positioning portions 11-2 and every one first positioning portion 11-1 are arranged at intervals, or every one first positioning portion 11-1 and every one second positioning portion 11-2 are arranged at intervals, and so on.

According to the structure of the motor case 10 and the brush disk 20 of the embodiment of the present application, by providing the positioning portions (the first positioning portion 11-1 and the second positioning portion 11-2) on the motor case 10, which are opposite in the axial direction, and providing the positioned portions (the first positioned portion 21 and the second positioned portion 22) on the brush disk 20, which are engaged with the positioning portions, the brush disk can be prevented from being excessively pressed into the motor case and being removed from the opening of the motor case. Furthermore, through the design that the positioning part and the positioned part are circumferentially staggered, the degree of freedom of design is improved, and the assembly is convenient.

In the above-described embodiment, "mutually reverse in the axial direction" means that the positioning directions are opposite, for example, since the first positioning portion 11-1 has the bearing surface S1, the positioning direction thereof is axially upward, that is, the first positioned portion 21 is supported by the first positioning portion 11-1 by being in contact with the first positioning portion 11-1 axially upward of the first positioning portion 11-1; the second positioning portion 11-2 has a hook surface S2, and the positioning direction thereof is axially downward, that is, the second positioned portion 22 contacts the second positioning portion 11-2 axially downward of the second positioning portion 11-2, and is hooked by the second positioning portion 11-2.

In the above embodiment, "circumferentially displaced" means circumferentially spaced, for example, one second positioning portion 11-2 every two first positioning portions 11-1, as shown in fig. 2. However, the present application is not limited to this, and may have one first positioning portion 11-1 every two second positioning portions 11-2, one second positioning portion 11-2 every one first positioning portion 11-1, or the like.

In the embodiment of the present application, as shown in fig. 4 and 5, the casing 10 has a bottom portion 10-1 and a side wall portion 10-2 extending in the axial direction from the radially outer edge of the bottom portion 10-1, and has an opening on the axially upper side. The first positioning portion 11-1 and the second positioning portion 11-2 are formed on the side wall portion 10-2. As shown in fig. 4 and 5, other configurations of the casing 10 can be referred to the related art, and the description thereof is omitted here.

In some embodiments, the first positioning portion 11-1 and the second positioning portion 11-2 are the same in shape and are each axially asymmetric, and the positioning directions of the first positioning portion 11-1 and the second positioning portion 11-2 for the brush tray 20 are axially opposite.

In the above-described embodiment, "the first positioning portion 11-1 and the second positioning portion 11-2 have the same shape" means, for example, that the shape of the first positioning portion 11-1 rotated by 180 ° about the line connecting the center point thereof and the center axis O is the same as the shape of the second positioning portion 11-2; similarly, the shape of the second positioning portion 11-2 rotated by 180 ° about the line connecting the center point thereof and the center axis O is the same as the shape of the first positioning portion 11-1.

In the above-described embodiment, "each axially asymmetric structure" means, for example, that a virtual line passing through the center of the first positioning portion 11-1 or the second positioning portion 11-2 in the circumferential direction is taken as a center line, and portions on both sides of the virtual line in the axial direction are asymmetric. For example, when the first positioning portion 11-1 or the second positioning portion 11-2 is viewed (i.e., viewed) from the front, the upper half portion and the lower half portion of the first positioning portion 11-1 or the second positioning portion 11-2 are different in structure.

In the above embodiment, the phrase "the positioning directions of the first positioning portion 11-1 and the second positioning portion 11-2 with respect to the brush tray 20 are opposite in the axial direction" means that, for example, the positioning direction of the first positioning portion 11-1 with respect to the brush tray 20 via the supporting surface S1 is axially upward, and the positioning direction of the second positioning portion 11-2 with respect to the brush tray 20 via the hooking surface S2 is axially downward.

According to the above-described structure of the first positioning portion 11-1 and the second positioning portion 11-2 of the above-described embodiment, the molding of the first positioning portion 11-1 and the second positioning portion 11-2 is facilitated.

In some embodiments, as shown in fig. 4 and 5, the first positioning portion 11-1 and the second positioning portion 11-2 are disposed at the same height in the axial direction, and the supporting surface S1 on the first positioning portion 11-1 and the hooking surface S2 on the second positioning portion 11-2 are located at different heights in the axial direction.

In the above-described embodiment, "the first positioning portion 11-1 and the second positioning portion 11-2 are disposed at the same axial height" means, for example, that the axially highest position of the first positioning portion 11-1 is the same as the axially highest position of the second positioning portion 11-2, and/or the axially lowest position of the first positioning portion 11-1 is the same as the axially lowest position of the second positioning portion 11-2.

In the above-described embodiment, "the support surface S1 on the first positioning portion 11-1 and the hooking surface S2 on the second positioning portion 11-2 are located at different heights in the axial direction" means that, for example, as shown in fig. 2, the axial height of the support surface S1 is axially above the axial height of the hooking surface S2.

In some embodiments, as shown in fig. 4 and 5, the brush tray 20 is disposed at the opening of the cylindrical housing 10 and covers the opening. Thus, the brush tray 20 also serves as a cover member of the motor, and can reliably cover the opening of the motor without providing a separate cover member.

In some embodiments, as shown in fig. 4, first positioning portion 11-1 and second positioning portion 11-2 are protrusions protruding toward the inside of casing 10, supporting surface S1 is the upper surface of first positioning portion 11-1, supports first positioned portion 21, and hooking surface S2 is the lower surface of second positioning portion 11-2, hooks second positioned portion 22, and second positioned portion 22 is a hooked portion extending from brush tray 20 toward the axial lower side and protruding toward the radial outer side.

In the above embodiment, as shown in fig. 4, the first positioning portion 11-1 further has the inclined surface portion S3 connecting the outermost end of the supporting surface S1 (i.e., the end portion of the radially inner side of the supporting surface S1) and the inner peripheral wall of the casing 10, and the second positioning portion 11-2 further has the inclined surface portion S4 connecting the outermost end of the hooking surface S2 (i.e., the end portion of the radially inner side of the hooking surface S2) and the inner peripheral wall of the casing 10.

According to the above-described structure of the first positioning portion 11-1 and the second positioning portion 11-2 of the above-described embodiment, the molding of the first positioning portion 11-1 and the second positioning portion 11-2 is facilitated, and at the same time, the assembly of the second positioned portion 22 is facilitated.

Fig. 6 is a partially enlarged schematic view of a portion C shown in fig. 5, and fig. 7 is a partially enlarged schematic view of a portion D shown in fig. 5.

In some embodiments, as shown in fig. 7, the axially upper end of the portion of the hooked portion (i.e., the second positioned portion 22) that protrudes toward the radially outer side is press-fitted with the hooking surface S2. Therefore, the freedom degree of the size of the hooked part is improved, and the hooked part can be reliably hooked.

In some embodiments, as shown in fig. 7, a portion of the hooked portion (i.e., the second located portion 22) that protrudes toward the radially outer side has a slope S5 that slopes toward the axially lower side and the radially inner side from where the hooking surface S2 is press-fitted. From this, by the portion of colluding be changeing when colluding the cooperation of vermicelli S2 and take place deformation to not only can make by the reliable portion of colluding hang, can also guarantee by the intensity of the portion of colluding.

In some embodiments, as shown in fig. 6, the portion of the hooked portion (i.e., the second positioned portion 22) that protrudes toward the radially outer side has an abutment inclined surface S6 that is inclined from the radially outermost end toward the axially upper side and the radially inner side, and the radially inner end of the second positioning portion 11-2 abuts against the abutment inclined surface S6. Thus, the hooked portion can be reliably hooked, and the degree of freedom in the size of the hooked portion can be increased.

In the embodiment of the present application, as shown in fig. 4 and 5, the motor further has a rotor 30 and a magnet 40 disposed opposite to the rotor 30 in the radial direction, and both the rotor 30 and the magnet 40 are accommodated in the casing 10.

In some embodiments, as shown in fig. 4 and 5, the distance d1 from the hooking surface S2 to the edge of the axially upper side of the magnet 40 is greater than the distance d2 from the hooking surface S2 to the edge of the axially lower side of the second part 22 to be positioned, i.e., d1> d 2; the edge e1 on the radially inner side of the second part-to-be-positioned 22 is located radially outward of the edge e2 on the radially inner side of the magnet 40. This prevents the magnet 40 from interfering with the hooked portion (i.e., the second portion-to-be-positioned 22), and also prevents the second portion-to-be-positioned 22 from interfering with other components inside the motor, such as the rotor, to facilitate assembly of the motor.

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 7 or to reduce one or more components in fig. 1 to 7. Regarding other configurations and structures of the motor, reference may be made to the related art, and description thereof is omitted here.

According to this application embodiment, through set up on the casing of motor in the axial top to reciprocal, in the location portion of upwards misplacing in circumference, and set up on the brush dish with location portion matched with by location portion, can prevent that the brush dish from being excessively impressed the casing and deviating from the opening of casing to location portion and the portion of being positioned through the circumference dislocation have improved the degree of freedom of design, the equipment of being convenient for.

Embodiments of the second aspect

Embodiments of the present application provide a drive component comprising 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 application, the driving member may be a driving member of any electric product, and regarding other configurations of the driving member, reference may be made to the related art, and a description thereof is omitted here.

Examples of the third aspect

Embodiments of the present application provide an electrical product having a drive component as described in embodiments of the second aspect, the drive component 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 equipped 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

1. A motor having a cylindrical housing and a brush disk disposed in the cylindrical housing,

2. The motor according to claim 1, wherein the first positioning portion and the second positioning portion have the same shape and are each of an axially asymmetric structure, and the first positioning portion and the second positioning portion are opposite in the axial direction with respect to the direction in which the brush disk is positioned.

3. The motor according to claim 1, wherein the first positioning portion and the second positioning portion are arranged at axially equal heights, and the support surface and the hooking surface are located at axially different heights.

4. The motor according to claim 1, wherein the brush tray is disposed at an opening of the cylindrical housing and covers the opening.

5. The motor of claim 2,

the first positioning portion and the second positioning portion are protrusions protruding toward the inside of the casing, the supporting surface is an upper surface of the first positioning portion and supports the first positioned portion, the hooking surface is a lower surface of the second positioning portion and hooks the second positioned portion, and the second positioned portion is a hooked portion extending from the brush tray toward the axial lower side and protruding toward the radial outer side;

6. The motor of claim 5,

the axial upper end of the portion of the hooked portion protruding radially outward is press-fitted with the hooking surface.

7. The motor of claim 6,

the portion of the hooked portion protruding radially outward has a slope inclined from a portion of the hooked portion press-fitted to the hooking surface toward the axially lower side and the radially inner side.

8. The motor of claim 5,

the portion of the hooked portion that protrudes radially outward has an abutment inclined surface that is inclined from the radially outermost end toward the axially upper side and radially inward, and the hooking surface abuts against the abutment inclined surface.

9. The motor according to claim 1, further comprising a rotor located inside the housing and a magnet arranged diametrically opposite to the rotor,

10. A drive member characterized by the motor of any one of claims 1 to 9.