CN211209441U

CN211209441U - Motor and electric product

Info

Publication number: CN211209441U
Application number: CN201922102693.6U
Authority: CN
Inventors: 刘慧�; 李新
Original assignee: Nidec Dalian Ltd
Current assignee: Nidec Dalian Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-07
Anticipated expiration: 2029-11-29

Abstract

The embodiment of the application provides a motor and an electric product, the motor comprises a brush disk, the brush disk comprises a brush holder, the brush holder extends along the radial direction and holds a brush, the brush protrudes from an opening at the radial inner side of the brush holder, a widened part is arranged at least one side of the circumferential direction of the end part at the radial inner side of the brush holder, and the widened part protrudes from the surface of at least one side of the circumferential direction. Through this application embodiment, can strengthen the intensity of brush holder, in addition, the widened portion can be used for supporting the electronic component who sets up in the brush dish, can practice thrift the space of brush dish.

Description

Motor and electric product

Technical Field

The embodiment of the application relates to the field of electromechanics.

Background

In the related art, a brush holding member, such as a brush holder, is provided on a brush plate of a motor. The brush holder extends generally radially of the brush disc, and the brush is received within the brush holder. The brush protrudes from a radially inner opening of the brush holder and is in contact with other motor components, for example, a commutator.

Usually, electronic components such as capacitors, inductors, resistors, and the like are also arranged on the brush plate. In order to reliably arrange the electronic component on the brush plate, it is generally necessary to provide a support portion (e.g., a support wall) on the brush plate to support the electronic component.

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 inventor finds that: in the prior art, during the operation of the motor, the brush can generate acting force on the wall parts at two sides of the circumferential direction of the brush holder, and the acting force can cause the brush holder to break; in addition, when a support wall dedicated to supporting an electronic component is provided, a space of the brush tray is occupied, resulting in a reduction in a space in which the brush tray can be arranged.

In order to solve at least one of the above problems or the like, embodiments of the present application provide a motor and an electric product to enhance the strength of a brush holder and save space of a brush plate.

According to an aspect of an embodiment of the present application, there is provided a motor including a brush tray including a brush holder extending in a radial direction and holding a brush therein, the brush protruding from an opening on a radially inner side of the brush holder,

wherein a widened portion is provided at least one side in a circumferential direction of a radially inner end portion of the brush holder, the widened portion protruding from a surface of the at least one side in the circumferential direction.

In one or more embodiments, the motor has a rotational axis extending along a central axis,

the motor part is disposed on the outer periphery of the rotating shaft, and the widened portion is located on the surface of the other side of the brush disk in the axial direction and has a rib shape extending in the axial direction.

In one or more embodiments, the axial height of the widened portion is more than half of the axial height of the circumferential wall portion of the brush holder.

In one or more embodiments, the axial height of the widened portion is lower than the axial height of the circumferential wall portion of the brush holder.

In one or more embodiments, an electronic component is arranged on the brush disk, which electronic component is supported on the widened portion of the brush holder.

In one or more embodiments, the electronic component is supported by the widened portion connecting circumferentially adjacent sides of two adjacent brush holders.

a motor part is abutted on the surface of one axial side of the brush disk, the motor part is arranged on the periphery of the rotating shaft, the widened part is positioned on the surface of the other axial side of the brush disk,

at least one of the widened portions includes a rib portion connected to the circumferential wall portion of at least one of the two adjacent brush holders, and an extended wall portion extending from the rib portion toward the other of the brush holders,

the axial height of the extending wall portion is lower than the axial height of the rib portion.

In one or more embodiments, the motor is a unidirectional rotation motor, the widened portion is provided at a circumferential side of a radially inner end portion of the brush holder,

the widened portion is located on the same side of the brush holder as the direction of rotation of the motor, as viewed in the axial direction.

In one or more embodiments, the motor is a bidirectional rotary motor, and the widened portion is provided on both circumferential sides of a radially inner end portion of the brush holder.

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

One of the beneficial effects of the embodiment of the application lies in: a widened portion is provided on at least one side in the circumferential direction of a radially inner end portion of the brush holder, and the widened portion protrudes from a surface of the at least one side in the circumferential direction. This can enhance the strength of the brush holder, and the widened portion can be used to support the electronic component provided on the brush tray, thereby saving the space of the brush tray.

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 an exploded view of a motor according to an embodiment of the first aspect of the present application;

FIG. 2 is an axial cross-sectional view of a motor embodying the first aspect of the present application;

FIG. 3 is a bottom view of a brush tray of a motor in accordance with an embodiment of the first aspect of the present application;

fig. 4 is an enlarged schematic view of a portion a of the brush plate corresponding to fig. 3.

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 the following description of the present application, for the sake of convenience of description, a direction parallel to a direction extending along a central axis (e.g., the central axis OO ') of the motor is referred to as an "axial direction", and a radial direction centered on the central axis OO' is referred to as a "radial direction". The direction around the central axis OO' is referred to as "circumferential". 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

Embodiments of a first aspect of the present application provide a motor.

Fig. 1 is an exploded view of a motor of the embodiment of the first aspect of the present application, and fig. 2 is an axial sectional view of the motor of the embodiment of the first aspect of the present application.

As shown in fig. 1 to 2, the motor 10 includes a brush tray 101. Further, the motor 10 may further have components such as an inner rotor 102 including a rotating shaft 106, a stator 103, a housing 104, etc., but is not limited thereto, and the motor 10 may further have other components such as bearings (e.g., a 1 st bearing 1051 and a 2 nd bearing 1052 shown in fig. 1 and 2), etc.

The motor 10 according to the embodiment of the present application may be any brush motor, which is not limited in this application, and in addition, the motor 10 may also have other components not shown in fig. 1 to 2, or may not include some components in fig. 1 to 2, which may refer to the related art and will not be described in detail herein.

Fig. 3 is a bottom view of the brush plate of the motor according to the embodiment of the first aspect of the present application, showing the brush plate 101 viewed from the side O' in fig. 1 and 2 from below. As shown in fig. 3, the brush plate 101 includes a brush holder 1011, the brush holder 1011 extending in the radial direction and holding a brush 1012 therein, the brush 1012 protruding from an opening on the radially inner side of the brush holder 1011. Fig. 4 is an enlarged schematic view of a portion a of the brush plate 101 corresponding to fig. 3, and shows the vicinity of the opening on the radially inner side of the brush holder 1011.

In one or more embodiments, as shown in fig. 3 and 4, a widened portion 10113 is provided on one circumferential side of the radially inner end portion 10111 of the brush holder 1011, the widened portion 10113 protruding from a surface 10112 on the one circumferential side. However, the present application is not limited thereto, and for example, a widened portion 10113 may be provided on both circumferential sides of the radially inner end portion 10111 of the brush holder 1011. In addition, fig. 3 and 4 show the case that 4 brush holders 1011 are provided on the brush plate 101, but the present application is not limited to the number of brush holders 1011 provided on the brush plate 101, and may be any number, and refer to the related art. In addition, the widened portion 10113 may be formed on one side or both sides of the circumferential direction of any one of the brush holders 1011 on the brush disk 101, and the manner of forming the widened portion 10113 on each brush holder 1011 may be the same or different, which is not limited in the present application.

In one or more embodiments, as shown in fig. 4, the widened portion 10113 is a strip protruding from the surface 10112 on one side of the circumferential direction of the brush holder 1011, such as a rib extending in the axial direction, but the present application is not limited thereto, and the widened portion 10113 may be any shape protruding from the surface 10112 on one side of the circumferential direction of the brush holder 1011, such as a cone shape, a sphere shape, a long strip extending in the radial direction, and the like, which is not limited thereto, and the shape of the widened portion 10113 may be selected or designed by those skilled in the art according to actual needs.

As is apparent from the above embodiment, the widened portion 10113 is provided on at least one side in the circumferential direction of the radially inner end portion of the brush holder 1011, and the widened portion 10113 protrudes from the surface on at least one side in the circumferential direction. Thus, when the brush (for example, when the motor is operated) applies a force to the circumferential wall portion of the brush holder, the widened portion 10113 can increase the strength of the brush holder 1011, and the widened portion 10113 can be used to support the electronic component provided on the brush disk 101, thereby saving the space of the brush disk.

In one or more embodiments, as shown in fig. 1 to 4, the motor 10 has a rotating shaft 106 extending along a central axis OO ', the surface 101A on one axial side O ' of the brush disk 101 is abutted with another motor component, for example, the 1 st bearing 1051, and the other motor component, that is, the 1 st bearing 1051 is disposed on the outer periphery of the rotating shaft 106, and the widened portion 10113 is located on the surface 101B on the other axial side O ' of the brush disk 101, and the widened portion 10113 has a rib shape extending in the axial direction. Therefore, the damage of the brush disc caused by stress concentration under the acting force of the bearing can be avoided.

In the embodiment of the present application, the widened portion 10113 may be located radially outside the 1 st bearing 1051 as viewed from the axial direction, and thus, the widened portion 10113 may avoid the problem of stress concentration due to the bearing function, but is not limited thereto, and the widened portion 10113 and the 1 st bearing 1051 may be located at positions opposite to each other on the surface 101A and the surface 101B of the brush disk 101, respectively, as viewed from the axial direction, and may be set by those skilled in the art according to actual needs.

In one or more embodiments, as shown in fig. 4, the axial height h1 of the widened portion 10113 is more than half of the axial height h2 of the circumferential wall portion of the brush holder 1011, where more than half includes half and more than half. This ensures the axial dimension of the widened portion 10113, and ensures the support strength of the brush holder 1011. Without limitation, the axial height h1 of the widened portion 10113 may be less than half of the axial height h2 of the circumferential wall of the brush holder 1011, which is not limited in the present application.

In one or more embodiments, as shown in fig. 4, the axial height h1 of the widened portion 10113 is lower than the axial height h2 of the circumferential wall portion of the brush holder 1011. Thereby, not only the strength of the brush holder 1011 can be enhanced, but also the heat radiation performance of the brush holder 1011 is less affected, and resin material is saved.

In one or more embodiments, as shown in FIG. 4, an electronic component 1013 is disposed between two adjacent brush holders 1011 of a brush tray 101, and the electronic component 1013 is supported by a widened portion 10113 of one brush holder (the right brush holder shown in FIG. 4, hereinafter referred to as 1011R) of the two adjacent brush holders 1011. without limitation, the electronic component may be supported by a widened portion 10113 of the other brush holder (the left brush holder shown in FIG. 4, hereinafter referred to as 1011L), or the electronic component may be supported by the widened portions of the

brush holders

1011R and 1011L. accordingly, an additional electronic component support is not required, and thus, the brush holder 1011 is strengthened and the electronic component 1013 is supported by the widened portion 10113.

In one or more embodiments, the electronic component 1013 may not be provided between two adjacent brush holders, for example, the electronic component 1013 may be provided at a position on the brush tray 101 at the right side of the brush holder 1011R (the right side is the right side of the paper surface, i.e., the side at the right side of the paper surface when viewed from the paper surface, and both the left and right sides hereinafter refer to the left and right sides of the paper surface, unless otherwise specified), in which case, a widened portion 10113 may be formed on the peripheral surface of the right side of the brush holder 1011R to support the corresponding electronic component 1013.

In one or more embodiments, as shown in fig. 4, the widened portions 10113 on circumferentially adjacent sides of two

adjacent brush holders

1011R and 1011L connect the two adjacent brush holders, and specifically, fig. 4 shows that the widened portions 10113 on the left side of the brush holder 1011R connect the

brush holders

1011R and 1011L, but not limited thereto, and the widened portions 10113 on the right side of the brush holder 1011L connect the

brush holders

1011R and 1011L, or the widened portions 10113 are formed on both adjacent sides of the

brush holders

1011R and 1011L, whereby the electronic component 1013 can be reliably supported, the molding is simple, and an insulating effect is achieved when the electronic component is supported by the widened portions.

In one or more embodiments, as shown in fig. 4, the brush holder 1011R is formed at a circumferential left side thereof with a widened portion 10113, the widened portion 10113 includes a rib 10113a and an extended wall portion 10113b, the rib 10113a is connected with the circumferential wall portion of the brush holder 1011R, the extended wall portion 10113b extends from the rib 10113a toward the brush holder 1011L, an axial height h3 of the extended wall portion 10113b is lower than an axial height h4 of the rib 10113a, and an axial height h4 of the rib 10113a may be used as the aforementioned axial height h1 of the widened portion 10113.

In the embodiment of the present invention, when a motor member is disposed on the outer periphery of the rotating shaft 106 in contact with the surface 101A on the O side in the axial direction of the brush disk 101 as shown in fig. 2 and the motor member is, for example, the 1 st bearing 1051, the widened portion 10113 can be positioned on the surface on the O' side in the axial direction of the brush disk 101, whereby the problem of stress concentration caused by the 1 st bearing 1051 can be avoided and the resin material can be saved. The widened portion 10113 and the motor member may be axially opposed to each other, or the widened portion 10113 may be located radially outside the motor member as viewed in the axial direction, but is not limited to the above.

In the embodiment of the present application, fig. 4 shows a case where the widened portion 10113 including the rib 10113a and the extended wall portion 10113b is formed on the circumferential left side of the brush holder 1011R, but the present application is not limited thereto, and for example, the widened portion 10113 including the rib and the extended wall portion may be formed on the circumferential right side of the brush holder 1011L, or the widened portion 10113 may be formed on both the circumferential left side of the brush holder 1011R and the circumferential right side of the brush holder 1011L, and the extended wall portions of the two widened portions 10113 are connected.

In one or more embodiments, the motor 101 is a unidirectional rotation motor, and a widened portion 10113 is provided on one side of the circumferential direction of the radially inner end portion of the brush holder 1011, the widened portion 10113 being located on the same side of the brush holder 1011 as the rotation direction of the motor 101 as viewed in the axial direction.

For example, fig. 4 shows a case where the widened portions 10113 are formed on the same side in the circumferential direction of the respective brush holders 1011, in other words, the rotation direction of the motor 10 is the counterclockwise direction on the paper surface, but not limited thereto, and when the rotation direction of the motor 10 is the clockwise direction on the paper surface, the widened portions 10113 are formed on the right side in the circumferential direction of the respective brush holders 1011. However, for example, when the motor is a unidirectional rotation motor, the widened portion 10113 may be provided on both circumferential sides of the radially inner end of the brush holder 1011, whereby the strength of the brush holder 1011 can be enhanced more reliably.

In one or more embodiments, the motor is a bidirectional rotary motor, and a widened portion is provided on both circumferential sides of a radially inner end portion of the brush holder. This ensures the strength of the brush holder.

According to the above embodiment, the widened portion 10113 is provided on at least one side in the circumferential direction of the radially inner end portion of the brush holder 1011, and the widened portion 10113 protrudes from the surface on at least one side in the circumferential direction. Thus, when the brush (for example, when the motor is operated) applies a force to the circumferential wall portion of the brush holder, the widened portion 10113 can increase the strength of the brush holder 1011, and the widened portion 10113 can be used to support the electronic component provided on the brush disk 101, thereby saving the space of the brush disk.

Embodiments of the second aspect

Embodiments of the second aspect of the present application provide an electrical product having the motor 10 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 transmission, a brake device, a sunroof adjusting device, a seat adjusting device, or the like.

According to an embodiment of the present application, a widened portion is provided at least one side in the circumferential direction of the radially inner end portion of the brush holder, the widened portion protruding from a surface of the at least one side in the circumferential direction. This can enhance the strength of the brush holder, and the widened portion can save space for the brush plate when supporting the electronic component provided on the brush plate.

It is to be noted that the above is merely an exemplary description of 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.

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 includes a brush tray including a brush holder extending in a radial direction and holding a brush therein, the brush protruding from an opening on a radially inner side of the brush holder,

it is characterized in that the preparation method is characterized in that,

a widened portion is provided on at least one side in the circumferential direction of a radially inner end portion of the brush holder, the widened portion protruding from a surface of the at least one side in the circumferential direction.

2. The motor of claim 1,

the motor has a rotating shaft extending along a central axis,

3. The motor of claim 2,

the axial height of the widened portion is more than half of the axial height of the circumferential wall portion of the brush holder.

4. The motor according to claim 2 or 3,

the axial height of the widened portion is lower than the axial height of the circumferential wall portion of the brush holder.

5. The motor of claim 1,

an electronic component is disposed on the brush disk, and the electronic component is supported by the widened portion of the brush holder.

6. The motor of claim 5,

the electronic component is supported by the widened portions connecting circumferentially adjacent side surfaces of two adjacent brush holders.

7. The motor of claim 6,

the motor has a rotating shaft extending along a central axis,

8. The motor of claim 1,

the motor is a unidirectional rotation motor, the widened portion is provided at one circumferential side of the end portion of the brush holder on the inner side in the radial direction,

9. The motor of claim 1,

the motor is a bidirectional rotary motor, and the widened portions are provided on both circumferential sides of the radially inner end portion of the brush holder.

10. An electrical product, characterized in that it has a motor according to any one of claims 1 to 9.