CN113746276A

CN113746276A - Brush disc assembly and motor

Info

Publication number: CN113746276A
Application number: CN202010474524.XA
Authority: CN
Inventors: 刘慧�
Original assignee: Nidec Dalian Ltd
Current assignee: Nidec Dalian Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-12-03
Anticipated expiration: 2040-05-29
Also published as: CN113746276B

Abstract

The embodiment of the application provides a brush disk assembly and a motor, the brush disk assembly comprises a brush disk, a noise reduction element and a conducting wire, wherein the noise reduction element and the conducting wire are arranged on one axial side of the brush disk, the axial side of the brush disk is also provided with at least one clamping part extending along the axial direction, the clamping part comprises a first wall part and a second wall part which are opposite, and at least one leading-out terminal of the noise reduction element and the conducting wire are clamped by the first wall part and the second wall part to realize the electrical connection of the noise reduction element and the conducting wire.

Description

Brush disc assembly and motor

Technical Field

The present application relates to the electromechanical arts.

Background

The brush plate of the motor is usually provided with noise reduction elements, such as choke coils, capacitors, etc. Generally, the noise reduction element and the braid wire are electrically connected by soldering the lead-out end of the noise reduction element, for example, the end of the lead-out wire of the choke coil or the lead pin of the capacitor to a lead wire such as the braid wire (braid resistance wire) via a connection terminal such as a Y-terminal.

Fig. 7 is a schematic diagram of a conventional brush tray assembly, and as shown in fig. 7, on a brush tray 800, an end 811 of a lead wire of a choke coil 810 and a lead 821 of a capacitor (not identified) are electrically connected to one end 841 of a braided wire 840 through a Y-shaped terminal 830.

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.

Disclosure of Invention

The inventors have found that when the leading

end portions

811 and 821 of the noise reducing element and the braided wire 840 are electrically connected to each other by the above-described configuration, the terminal 830 needs to be additionally provided, the leading

end portions

811 and 821 of the noise reducing element and the braided wire 840 need to be arranged on the terminal 830, and soldering work is performed, which results in a large number of work steps, a complicated work, a long time, and a high cost due to the need to add the terminal to the brush tray.

To address at least one of the above problems or other similar problems, embodiments of the present application provide a brush disc assembly and a motor.

According to a first aspect of embodiments of the present application, there is provided a brush disk assembly, the brush disk assembly including a brush disk, and a noise reduction element and a conductive wire arranged on one axial side of the brush disk, the one axial side of the brush disk further having at least one clamping portion extending in an axial direction, the clamping portion including a first wall portion and a second wall portion that are opposed to each other, at least one leading-out terminal of at least one noise reduction element and the conductive wire being clamped by the first wall portion and the second wall portion to electrically connect the noise reduction element and the conductive wire.

In at least one embodiment, the brush disc further has a first axial limiting portion disposed at a position close to the clamping portion to limit the wire in an axial direction.

In at least one embodiment, the first axial restraint portion includes a first axial extension portion and a first hook portion, the first axial extension portion extends axially toward the one axial side of the brush tray,

the first hook part extends towards the direction crossed with the axial direction at one end of the first axial extension part far away from the brush disc so as to limit the conducting wire in the axial direction.

In at least one embodiment, when viewed axially, the portion of the wire extending from the first axial limiting portion and the portion clamped in the clamping portion are located on the same straight line.

In at least one embodiment, the first axial restraint portion is a metal component that is coupled to a power source.

In at least one embodiment, the axial side of the brush disk further has a second axial limiting portion that axially limits the first axial limiting portion.

In at least one embodiment, the noise reduction element comprises at least one first noise reduction element, the axial side of the brush disk assembly further having at least one receiving portion that receives the at least one first noise reduction element, the receiving portion having a wall portion extending in the axial direction, the wall portion constituting the first wall portion.

In at least one embodiment, the noise reduction element further comprises at least one second noise reduction element, the second wall portion being a support wall of the second noise reduction element.

In at least one embodiment, the first wall portion has an opening portion inclined at least to one side in the axial direction, and an end portion of the opening portion near the brush tray has a first groove extending in the axial direction toward the direction near the brush tray.

In at least one embodiment, the clamping portion further includes a support table disposed between the first wall portion and the second wall portion for supporting the wire.

According to a second aspect of embodiments of the present application, there is provided a motor having a brush tray assembly as described in any of the previous embodiments.

The embodiment of the application has the advantages that the extraction terminal and the lead of the noise reduction element are clamped by the clamping part on the brush disc to be electrically connected, so that the operation process can be simplified, the working time can be shortened, and the cost can be reduced.

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 present application include many variations, modifications, and equivalents within the scope of the terms of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

Elements and features described in one drawing or one implementation of an embodiment of the application may be combined with elements and features shown in one or more other drawings or implementations. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts for use in more than one embodiment.

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 brush disk assembly of one embodiment of the present application, viewed from one direction.

Fig. 2 is a schematic view of the brush disc assembly shown in fig. 1, viewed from another direction.

Fig. 3 is a top view of the brush disk assembly shown in fig. 1.

Fig. 4 is a partial sectional view taken along the AA direction in the partially enlarged view of fig. 3.

Fig. 5 is a schematic view of a brush disk assembly of another embodiment of the present application, viewed from one direction.

Fig. 6 is an enlarged view of a portion of the brush tray assembly shown in fig. 1 with portions broken away.

Fig. 7 is a schematic view of a prior art brush disc assembly.

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. Various embodiments of the present application will be described below with reference to the drawings. These embodiments are merely exemplary and are not intended to limit the present application.

In the embodiments of the present application, the terms "first", "second", "upper", "lower", and the like are used to distinguish different elements by name, but do not indicate a spatial arrangement, a temporal order, and the like of the elements, and the elements should not be limited by the terms. 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 include the plural forms and are to be construed 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 embodiments of the present application, for the sake of convenience of description, a radial direction about a central axis perpendicular to the brush disc assembly will be referred to as "radial direction", a direction around the central axis will be referred to as "circumferential direction", a direction along the central axis or a direction parallel thereto will be referred to as "axial direction", a side away from the central axis in the radial direction will be referred to as "radially outer side", and a side closer to the central axis in the radial direction will be referred to as "radially inner side".

Embodiments of the first aspect

Embodiments of a first aspect of the present application provide a brush disk assembly, fig. 1 is a schematic view of a brush disk assembly of an embodiment of the present application as viewed from one direction, and fig. 2 is a schematic view of the brush disk assembly shown in fig. 1 as viewed from another direction.

In the present embodiment, as shown in fig. 1, brush disk assembly 10 includes brush disk 100, and noise reduction element 200 and conductive wire 300 arranged on one axial side (on the O side of central axis OO' in fig. 1) of brush disk 100.

In at least one embodiment, one axial side of the brush tray 100 further has at least one clamping portion 400 extending in the axial direction, the clamping portion 400 includes a first wall portion 410 and a second wall portion 420, and at least one leading terminal of at least one noise reduction element 200 and the wire 300 are clamped by the first wall portion 410 and the second wall portion 420 to electrically connect the noise reduction element 200 and the wire 300.

Thus, the lead-out terminal of the noise reduction element 200 and the lead wire 300 are sandwiched by the sandwiching portion 400 of the brush tray 100 to electrically connect the lead-out terminal and the lead wire 300, thereby simplifying the working process, reducing the number of steps, and reducing the cost.

Further, since the current passing between the noise reduction element 200 and the wire 300 is small, even if the noise reduction element 200 and the wire 300 are electrically connected only by sandwiching, the conductive performance therebetween is not affected.

In at least one embodiment, the holder 400 may be a structure integrally molded with a resin material when the brush tray 100 is molded. Therefore, an electric connecting part is not required to be additionally arranged, the forming is simple, and the cost is saved.

The type and number of devices included in the noise reduction element 200 may be set according to actual needs. For example, as shown in fig. 1, the noise reduction element 200 may include a capacitor 210 and a choke coil 220, and may also include other devices; the number of noise reduction elements 200 may be 1, or 2 or more. The embodiment of the present application does not limit the types and the number of the devices specifically included in the noise reduction element 200.

For example, as shown in the partially enlarged view of fig. 1, the first wall portion 410 and the second wall portion 420 are disposed to be opposed, and the first wall portion 410 and the second wall portion 420 may be disposed in parallel or substantially in parallel; one pin 211 of the capacitor 210 and one end 301 of the conductive line 300 are squeezed between the first wall portion 410 and the second wall portion 420, and are clamped by the first wall portion 410 and the second wall portion 420, so that the capacitor 210 and the conductive line 300 are electrically connected.

The other end of the lead wire 300 may be electrically connected to a lead terminal of another device by another clamping portion (not shown), or may be electrically connected to a lead terminal of another device by another method such as soldering.

Further, the other end of the wire 300 may also be electrically connected to other noise reduction elements, for example, to a lead-out line of one end of the choke coil 220, thereby connecting a plurality of noise reduction elements in series.

In at least one embodiment, the type and number of the wires 300 can also be set according to actual needs. For example, the conductive wire 300 is made of a flexible conductive material, such as a braided wire; the number of the wires 300 may be 1 or 2 or more. The embodiment of the present application does not limit the material and the number of the conductive wires 300.

In at least one embodiment, the brush tray 100 further has a first axial limiting portion 500 (shown in fig. 2) on one axial side, and the first axial limiting portion 500 is disposed near the clamping portion 400 to limit the conducting wire 300 in the axial direction.

Thus, the lead 300 is axially restrained by the first axial restraint portion 500, and the lead 300 is less likely to be separated from the brush tray 100 in the axial direction. In the case where the lead 300 is made of a conductive material having a soft material, for example, in the case where the lead 300 is a braided wire, the first axial stopper 500 can pull the lead against the brush tray 100, thereby preventing the lead 300 from coming off the brush tray 100.

In at least one embodiment, the position where the first axial limiting portion 500 is disposed "close" to the clamping portion 400 means that the first axial limiting portion 500 is disposed near the clamping portion 400, for example, the distance between the first axial limiting portion 500 and the clamping portion 400 is within a preset value, which can be determined according to actual requirements. For example, the preset value may be set according to the size of the brush plate and the size, characteristics, distribution, and the like of each component.

In addition, the first axial stopper 500 may be formed separately from the brush tray 100 or integrally with the brush tray 100, and the embodiment of the present application does not limit the specific forming manner of the first axial stopper 500.

In at least one embodiment, the first axial limiting portion 500 includes a first axial extending portion 510 and a first hook portion 520, the first axial extending portion 510 extends in an axial direction toward one axial side of the brush tray 100, and the first hook portion 520 extends in a direction crossing the axial direction at an end of the first axial extending portion 510 away from the brush tray 100 to limit the lead 300 in the axial direction.

For example, as shown in a partially enlarged view in fig. 2, the first axial extension 510 extends from the brush tray 100 toward one axial side, and the first hook 520 extends from an end portion of the first axial extension 510 on one axial side toward the brush tray 100. The lead 300 is positioned on the other axial side (the O 'side of the central axis OO') of the first hook 520, and thus the lead 300 can be axially restrained by the first hook 520, and the lead 300 can be prevented from coming off in a direction away from the brush tray, and the portion of the lead 300 held in the holding portion 400 can be prevented from coming off in a direction away from the brush tray.

Further, the lead 300 may be connected to the first axially extending portion 510, and by soldering the lead 300 to the first axially extending portion 510 by solder, for example, not only the lead 300 may be axially restrained by the first axially extending portion 510, but also the lead 300 may be electrically connected to the first axially restraining portion 500, and the noise reduction element 200 may be electrically connected to another device (for example, a power supply described later) via the lead 300 and the first axially restraining portion 500.

In at least one embodiment, the portion of the lead 300 extending from the first axial limiting portion 500 is aligned with the portion clamped in the clamping portion 400 when viewed in the axial direction.

Fig. 3 is a top view of the brush tray assembly 10.

As shown in the enlarged view of fig. 3, the portion of the lead 300 extending from the first axial stopper 500 and the portion clamped in the clamping portion 400 are located on the same straight line L, so that the number of bending times of the lead 300 can be reduced, and the difficulty of the operation can be reduced.

In addition, the axial heights of the portion of the lead 300 extending from the first axial limiting portion 500 and the portion clamped in the clamping portion 400 may be the same or different according to actual needs, and this is not limited in this embodiment of the present application.

In at least one embodiment, the first axial stop 500 may be a metal component that may be used to electrically connect to a power source.

For example, the first axial stopper portion 500 may serve as a power supply terminal, a power supply (not shown in fig. 3) may be located at the other axial side (O ' side of the central axis OO ') of the brush tray, and one terminal of the power supply may be inserted into the first axial stopper portion 500 from the other axial side to the one axial side (O side of the central axis OO '), thereby electrically connecting the first axial stopper portion 500 to the power supply. Thus, the lead 300 is limited while achieving electrical connection, and the parts disposed on the brush plate are further simplified, thereby further reducing the cost.

The material of the first axial stopper 500 may be determined according to actual needs, and for example, a metal material such as copper or aluminum may be used. The embodiment of the present application does not limit this.

In at least one embodiment, one axial side of the brush tray 100 further has a second axial limiting portion 600 that axially limits the first axial limiting portion 500.

As shown in the partially enlarged view of fig. 2 and the partially enlarged view of fig. 3, the second axial stopper portion 600 surrounds the first axial stopper portion 500.

In at least one embodiment, the first axial restraint portion 500 may be axially embedded into the second axial restraint portion 600 by an interference fit. For example, the second axial stopper 600 includes at least two opposing sandwiching walls, the distance between the two sandwiching walls is smaller than the dimension of the first axial stopper 500 in the corresponding direction, and the first axial stopper 500 can be inserted between the two sandwiching walls in the axial direction and sandwiched by the two sandwiching walls, whereby the stopper of the first axial stopper 500 can be realized by a simple structure.

In at least one embodiment, the first axial limiting portion 500 can also be engaged in the second axial limiting portion 600.

As shown in fig. 4, the first axial limiting portion 500 may include 2 opposing spring pieces 530, the spring pieces 530 extend in the axial direction, and the 2 spring pieces 530 are respectively inclined and bent from the first axial limiting portion 500 in a direction away from the first axial limiting portion 500, and have elasticity in a direction perpendicular to the axial direction. The second axial stopper portion 600 includes a second axial extension portion 610 and a second hook portion 620, the second axial extension portion 610 extends in the axial direction, and the second hook portion 620 extends from an end portion of one axial side (O side of the central axis OO') of the second axial extension portion 610 toward the first axial stopper portion 500. When the first axial direction limiting portion 500 is inserted into the second axial direction limiting portion 600 along the axial direction, the elastic piece 530 is compressed into the second axial direction limiting portion 600, and then is expanded in the second axial direction limiting portion 600 due to the elastic restoring force, so as to be engaged with the second hook 620. This allows the first axial stopper 500 to be stopped with a simple structure.

Further, the second axial stopper portion 600 may be integrally formed with the brush tray 100, and thus, the second axial stopper portion 500 may more reliably stopper the first axial stopper portion 500. Further reducing the cost and being convenient for molding.

In at least one embodiment, noise reduction element 200 may further include at least one first noise reduction element, and one axial side of brush disk assembly 10 may further have at least one receiving portion that receives the at least one first noise reduction element, the receiving portion having one wall portion extending in the axial direction, the wall portion constituting a first wall portion.

In at least one embodiment, the first noise reduction element is, for example, a capacitor 210, and for convenience, the capacitor 210 will be described as the first noise reduction element.

As shown in the partially enlarged view of fig. 1, one axial side (the O side of the central axis OO') of the brush tray assembly 10 has an accommodating portion 700 that accommodates the capacitor 210, and the accommodating portion 700 has wall portions extending in the axial direction, one of which constitutes the first wall portion 410. This eliminates the need to additionally provide the first wall portion 410 for exclusive use, and reduces the production cost.

Further, the second wall portion 420 may be formed separately on the brush tray 100, and for example, as shown in a partially enlarged view of fig. 1, the second wall portion 420 may be formed to extend in the axial direction at a position on the brush tray 100 that is opposed to the first wall portion 410.

Further, the second wall portion 420 may also be formed using a wall portion that accommodates or supports other components.

In at least one embodiment, for example, noise reduction element 200 may also include at least one second noise reduction element, with the second wall portion being a bearing wall of the second noise reduction element.

In at least one embodiment, the second noise reduction element is, for example, a choke coil 220, and for convenience, the choke coil 220 will be described as the second noise reduction element.

As shown in a partially enlarged view in fig. 5, one support wall 221 of the choke coil 220 is configured as a second wall portion 420 of the clip portion 400. Therefore, the special second wall part 420 does not need to be additionally arranged, the production cost can be reduced, the existing configuration of the brush disc can be effectively utilized, and the space utilization rate of the brush disc is improved.

In at least one embodiment, the first wall portion 410 may further have an opening portion inclined at least on one side, and an end portion of the opening portion near the brush tray has a first groove extending in the axial direction toward the direction near the brush tray.

Fig. 6 is an enlarged view of the brush tray assembly of fig. 1 with the capacitor removed.

As shown in fig. 6, the first wall portion 410 has an opening portion 411, both sides of the opening portion 411 are inclined to form a guide portion for guiding the bent pin when the capacitor pin is bent, and an end portion of the opening portion 411 near the brush tray has a first groove 411a extending in the axial direction toward the direction near the brush tray, whereby the pin of the capacitor can be easily guided to the bottom of the first groove 411a by the inclined guide portion.

In addition, as shown in fig. 6, the first wall portion 410 may further have a second groove 411b, the second groove 411b is recessed from a surface of the first wall portion 410 away from the capacitor to a side of the capacitor, and the second groove 411b is formed on a surface of the first wall portion 410 close to the conductive line 300 (not labeled in fig. 6) without penetrating through the first wall portion 410, so that a pin of the capacitor falls into the second groove 411b after the first groove 411a is bent, thereby preventing the bent pin from shifting on the surface of the first wall portion 410 and ensuring that the pin of the capacitor is reliably electrically connected with the conductive line.

In at least one embodiment, as shown in fig. 6, the clamping portion 400 can further include a support table 430 disposed between the first wall portion 410 and the second wall portion 420 for supporting the wire 300 (not identified in fig. 6). Thus, the support base 430 regulates the axial heights of the lead wire 300 and the lead-out terminal of the first noise reduction element, and prevents the lead wire 300 from being excessively pressed into the bottom of the clip 400.

The height of the supporting platform 430 may be set according to actual needs, for example, the height of the supporting platform 430 may be determined according to the axial height of the bent first noise reduction element, such as the capacitor pin, so as to ensure that the conductive wire and the capacitor pin can be electrically connected. The embodiment of the present application does not limit the specific height of the supporting table 430.

In at least one embodiment, the brush disc assembly 10 may further include other components as needed, and the specific structure and function of these components may be referred to in the related art, which is not limited by the embodiments of the present application.

According to the embodiment of the first aspect of the present application, the lead-out terminal and the lead wire of the noise reduction element are electrically connected by clamping the lead-out terminal and the lead wire by the clamping portion on the brush plate, so that the working process can be simplified, the working time can be shortened, and the cost can be reduced.

Embodiments of the second aspect

Embodiments of a second aspect of the present application provide a motor. A motor of an embodiment of the present application includes a brush tray assembly as described in embodiments of the first aspect. Since the structure of the brush disc assembly 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 addition, the motor of the embodiment of the present application may further include other components, such as a stator, a rotor, and the like, as needed, and the specific structure and function of these components may refer to the related art, which is not limited in the embodiment of the present application.

In the embodiment of the second aspect of the present application, the application field of the motor is not limited, and the motor may be applied to products such as an in-vehicle motor, an air conditioner, a water dispenser, a washing machine, a sweeper, a compressor, a blower, a stirrer, and the like, and may also be applied to electrical equipment in other fields.

According to the embodiment of the second aspect of the present application, the lead-out terminal and the lead wire of the noise reduction element are clamped by the clamping portion on the brush plate to electrically connect the lead-out terminal and the lead wire, so that the working process can be simplified, the working hours can be shortened, the cost can be reduced, the working process of the motor can be simplified, and the production cost of the motor can be reduced.

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.

Claims

1. An electric brush disk assembly comprising an electric brush disk, and a noise reduction element and a conducting wire arranged on one side of the electric brush disk in an axial direction, the electric brush disk assembly characterized in that:

the axial side of the brush plate is also provided with at least one clamping part extending along the axial direction,

the clamping portion includes opposing first and second wall portions,

at least one leading terminal of at least one noise reduction element and the wire are sandwiched by the first wall portion and the second wall portion, and electrical connection between the noise reduction element and the wire is achieved.

2. The brush tray assembly of claim 1,

one axial side of the electric brush disc is also provided with a first axial limiting part,

the first axial limiting part is arranged at a position close to the clamping part and limits the conducting wire in the axial direction.

3. The brush tray assembly of claim 2,

the first axial limiting part comprises a first axial extending part and a first hook part,

the first axial extension extends axially toward the one axial side of the brush tray,

4. The brush tray assembly of claim 2 or 3,

when viewed axially, the part of the lead extending from the first axial limiting part and the part clamped in the clamping part are positioned on the same straight line.

5. The brush tray assembly of claim 2,

the first axial limiting part is a metal part and is connected with a power supply.

6. The brush tray assembly of claim 2,

the brush disc is characterized in that one axial side of the brush disc is also provided with a second axial limiting part which axially limits the first axial limiting part.

7. The brush tray assembly of claim 1,

the noise reduction elements include at least a first noise reduction element,

the axial side of the brush disk assembly also has at least one receiving portion that receives the at least one first noise reduction element,

the accommodating portion has one wall portion extending in the axial direction, the wall portion constituting the first wall portion.

8. The brush tray assembly of claim 1,

the noise reduction elements include at least a second noise reduction element,

the second wall portion is a support wall of the second noise reduction element.

9. The brush tray assembly of claim 7,

the first wall portion has an opening portion with at least one side inclined, and an end portion of the opening portion close to the brush tray has a first groove extending in an axial direction in a direction close to the brush tray.

10. The brush tray assembly of claim 1,

the clamping portion further includes a support table disposed between the first wall portion and the second wall portion for supporting the wire.

11. A motor having a brush-tray assembly according to any of claims 1 to 10.