Conductive brush assembly, driving device and vehicle

Abstract

The invention discloses a conductive brush assembly, a driving device and a vehicle. The conductive brush assembly comprises an insulating supporting piece; and the plurality of conductive brushes are all grounded, the plurality of conductive brushes are arranged on the insulating supporting piece at intervals, and the plurality of conductive brushes are respectively and electrically connected with an electrified piece. By arranging the plurality of conductive brushes and arranging the plurality of conductive brushes at intervals, a plurality of parallel flow paths can be formed when current on an electrified part passes through the plurality of conductive brushes, so that the resistance in the current flow paths can be reduced, the current can better flow through the conductive brushes, and the effect of bearing short circuit can be achieved; and the bearing is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of drive devices, and in particular to a conductive brush assembly, a drive device and a vehicle. Background Art

[0002] In the related art, the driving device usually adopts a conductive brush assembly to effectively conduct the current of the live parts to the ground. However, due to the large resistance of the conductive brush assembly itself, the grounding effect of the live parts is not obvious. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a conductive brush assembly, which can enable the current on the live part to form multiple parallel flow paths when passing through multiple conductive brushes, thereby reducing the resistance in the current flow path, and the current can flow through the conductive brush better, thereby achieving the effect of short-circuiting the bearing and protecting the bearing.

[0004] The present invention further provides a driving device.

[0005] The present invention further provides a vehicle.

[0006] The conductive brush assembly according to the present invention comprises: an insulating support; a plurality of conductive brushes, all of which are grounded and spaced apart on the insulating support, and are electrically connected to the live parts respectively.

[0007] According to the conductive brush assembly of the present invention, a plurality of conductive brushes are arranged with intervals between them, so that the current on the live part can form a plurality of parallel flow paths when passing through the plurality of conductive brushes, thereby reducing the resistance in the current flow path, and the current can flow through the conductive brushes better, thereby achieving the effect of short-circuiting the bearing and protecting the bearing.

[0008] In some examples of the present invention, the insulating support member includes: a plurality of first insulating members, and a plurality of the conductive brushes and a plurality of the first insulating members are alternately distributed.

[0009] In some examples of the present invention, a plurality of the conductive brushes are arranged at intervals along the circumferential direction.

[0010] In some examples of the present invention, the plurality of conductive brushes are arranged at intervals along the circumferential direction, and the plurality of first insulating members and the plurality of conductive brushes together form an annular structure.

[0011] In some examples of the present invention, the insulating support member further includes: a second insulating member, the second insulating member having a mounting surface, and the plurality of conductive brushes are mounted on the mounting surface.

[0012] In some examples of the present invention, the conductive brush is provided with a first mounting portion, the second insulating member is provided with a second mounting portion, and the first mounting portion is rotatable relative to the second mounting portion.

[0013] In some examples of the present invention, one of the first mounting portion and the second mounting portion is a matching column, and the other of the first mounting portion and the second mounting portion is a matching hole.

[0014] In some examples of the present invention, the insulating support member includes: a plurality of first insulating members, a plurality of the conductive brushes and a plurality of the first insulating members are alternately distributed, and the first insulating members are elastic members.

[0015] In some examples of the present invention, the conductive brush includes: a main body and a contact portion, the main body is disposed on the insulating support member, and the contact portion is disposed on a side of the main body facing the live member.

[0016] In some examples of the present invention, there are multiple contact portions, and the multiple contact portions are arranged at intervals.

[0017] The driving device according to the present invention comprises: the conductive brush assembly described above.

[0018] A vehicle according to the present invention comprises: the driving device described above.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a conductive brush assembly according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the conductive brush;

[0023] Figure 3 is a schematic structural diagram of a second insulating member;

[0024] Figure 4 It is a schematic diagram of the partial structure of a driving device according to another embodiment of the present invention.

[0025] Reference numerals:

[0026] 1. Conductive brush assembly;

[0027] 10. Second insulating member; 11. Second mounting portion; 20. Conductive brush; 21. Main body; 211. First mounting portion; 22. Contact portion; 30. Elastic member; 4. Driving device; 41. Housing; 411. Mounting groove; 42. Bearing; 43. Live member. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0029] Reference below Figure 1-Figure 4 The conductive brush assembly 1 according to an embodiment of the present invention is described. The conductive brush assembly 1 is usually arranged on the driving device 4, and is used to conduct the current on the live part 43 to the ground, so as to prevent the bearing 42 from being corroded by electricity.

[0030] like Figure 1 As shown, the conductive brush assembly 1 according to an embodiment of the present invention includes: an insulating support and a plurality of conductive brushes 20. Among them, the insulating support mainly plays the role of insulation, installation, positioning and support, and other corresponding components can be installed on the insulating support. The conductive brush 20 mainly plays the role of conduction. The arrangement of multiple conductive brushes 20 can make the distribution of the conductive brushes 20 more comprehensive, thereby improving the conductive effect. The conductive brushes 20 can be two groups, three groups or even more groups. In this application, four groups are taken as an example.

[0031] like Figure 1 As shown, a plurality of conductive brushes 20 are arranged on the insulating support, so that the insulating support can support the conductive brushes 20, wherein the conductive brushes 20 can be interference-fitted on the insulating support, or the conductive brushes 20 are fixed on the insulating support by a fixing member or by bonding, or a clamping limit structure is provided to clamp the conductive brushes 20 on the insulating support. Of course, the conductive brushes 20 can also be fixed on the insulating support by other suitable methods.

[0032] Multiple conductive brushes 20 are arranged at intervals, and the multiple conductive brushes 20 are electrically connected to the charged part 43 respectively, so that interference between two adjacent conductive brushes 20 can be avoided, and when current is input from the charged part 43 to the multiple conductive brushes 20, a parallel circuit can be formed between the multiple conductive brushes 20, thereby reducing the resistance in the current flow path, and the multiple conductive brushes 20 are all grounded, so that the current can be better derived from the conductive brush 20, thereby achieving the effect of short-circuiting the bearing 42.

[0033] For example, when the conductive brush assembly 1 is constructed as a circular ring structure, multiple conductive brushes 20 can be arranged around the circumference of the charged part 43, and the multiple conductive brushes 20 are spaced a certain distance apart, so as to avoid interference between the multiple conductive brushes 20. On this basis, the multiple conductive brushes 20 can also form multiple layers in the axial direction of the charged part 43. Of course, each layer of conductive brushes 20 also needs to be spaced apart. When the conductive brush assembly 1 is constructed as a structure of other shapes, for example, the conductive brush assembly 1 is a rectangular parallelepiped structure, multiple conductive brushes 20 can be arranged along the radial direction of the charged part 43, or multiple conductive brushes 20 can be arranged along the axial direction of the charged part 43, and multiple conductive brushes 20 can be electrically connected to the charged part 43. Of course, with the different shapes of the conductive brush assembly 1, the multiple conductive brushes 20 can also be arranged in other suitable ways.

[0034] Therefore, by setting a plurality of conductive brushes 20 and setting the plurality of conductive brushes 20 at intervals, the current on the charged part 43 can form a plurality of parallel flow paths when passing through the plurality of conductive brushes 20, thereby reducing the resistance in the current flow path, and the current can flow through the conductive brushes 20 better, thereby achieving the effect of short-circuiting the bearing 42 and protecting the bearing 42.

[0035] One option, such as Figure 1 As shown, the insulating support member includes: a plurality of first insulating members 30, a plurality of conductive brushes 20 and a plurality of first insulating members 30 are alternately distributed. That is to say, the first insulating members 30 are respectively arranged between adjacent conductive brushes 20, so that an alternately distributed structure can be formed, and the plurality of conductive brushes 20 are connected together, which is convenient for the overall installation and setting of the conductive brush assembly 1, and the first insulating member 30 can play an insulating role to prevent the current from flowing between adjacent conductive brushes 20. During installation and positioning, a bolt structure can be arranged on the first insulating member 30, and the first insulating member 30 can be installed and fixed to the grounding position by the bolt structure, so that the plurality of conductive brushes 20 are grounded.

[0036] The plurality of conductive brushes 20 and the plurality of first insulating members 30 may be alternately distributed in the axial direction of the live member 43. Figure 1 As shown, a plurality of conductive brushes 20 are arranged at intervals in the circumferential direction. The circumferential distribution is more suitable for conduction when the charged part 43 is an axial structure than the linear distribution.

[0037] Furthermore, if Figure 1 and Figure 3As shown, the plurality of conductive brushes 20 are arranged at intervals in the circumferential direction, and the plurality of first insulating members 30 and the plurality of conductive brushes 20 are jointly configured into an annular structure. That is to say, while the plurality of conductive brushes 20 are distributed in the circumferential direction, the plurality of first insulating members 30 and the plurality of conductive brushes are jointly configured into an annular structure, and the annular structure is simple in design, easy to process and set, and can better cooperate with the housing 41.

[0038] It should be noted that if Figure 4 As shown, a mounting groove 411 is provided on the housing 41, and the insulating support member can be interference-fitted with the side wall of the mounting groove 411, and the side of the insulating support member away from the conductive brush 20 is limitedly matched with the bottom wall of the mounting groove 411. Among them, the mounting groove 411 mainly plays a role of installation. The insulating support member is interference-fitted with the side wall of the mounting groove 411, specifically, the outer diameter circumferential surface of the insulating support member is interference-fitted with the side wall of the mounting groove 411, so that the insulating support member can be radially positioned and limited to move circumferentially, so that the setting of the insulating support member is more stable, the insulating support member can work better, and thus the conductive brush 20 can work better.

[0039] The side of the insulating support away from the conductive brush 20 cooperates with the bottom wall of the mounting groove 411, so that the insulating support can be axially positioned to prevent the insulating support from axial movement, further improving the stability of the insulating support setting, allowing the insulating support to work better, thereby allowing the conductive brush 20 to work better.

[0040] In this way, during installation and positioning, the annular structure can be interference fit in the installation groove 411 to ground the multiple conductive brushes 20; or, during installation and positioning, the first insulating member 30 in the annular structure is fixed to the grounding position by a bolt structure to ground the multiple conductive brushes 20.

[0041] Optionally, multiple conductive brushes 20 are evenly distributed on the insulating support, so that the arrangement of the multiple conductive brushes 20 is more reasonable, which facilitates the cooperation between the multiple conductive brushes 20 and the charged part 43, thereby facilitating the uniform guidance of the current on the charged part 43 and improving the grounding effect of the charged part 43.

[0042] Alternatively, the insulating support member further includes: a second insulating member 10, the second insulating member 10 having a mounting surface, and the plurality of conductive brushes 20 are mounted on the mounting surface. In this way, the plurality of conductive brushes 20 can be connected together through the second insulating member 10, which is convenient for the overall installation and setting of the conductive brush assembly 1. At the same time, the second insulating member 10 can also play a role in positioning and oil sealing, and the conductive brush assembly 1 has a better conductive effect. Of course, the second insulating member 10 can also play an insulating role to prevent current from flowing between adjacent conductive brushes 20.

[0043] Wherein, when the first insulating member 30 is not provided but the second insulating member 10 is provided, a plurality of conductive brushes 20 are arranged at intervals on the second insulating member 10, so that the plurality of conductive brushes 20 can be supported by the second insulating member 10, and the second insulating member 10 can also play the role of positioning and oil sealing, and the conductive brush assembly 1 has a better conductive effect. When the first insulating member 30 and the second insulating member 10 are provided at the same time, the first insulating member 30 can connect the plurality of conductive brushes 20 together, which is convenient for the overall installation and setting of the conductive brush assembly 1, and the second insulating member 10 can support the plurality of conductive brushes 20, and can also play the role of positioning and oil sealing, and the conductive brush assembly 1 has a better conductive effect. Of course, in the above two cases, the first insulating member 30 and the second insulating member 10 can both prevent the current from flowing between adjacent conductive brushes 20.

[0044] Furthermore, if Figure 2 and Figure 3 As shown, the conductive brush 20 is provided with a first mounting portion 211, and the second insulating member 10 is provided with a second mounting portion 11, and the first mounting portion 211 can rotate relative to the second mounting portion 11. The first mounting portion 211 and the second mounting portion 11 can both play a role of installation, and the first mounting portion 211 is arranged on the conductive brush 20, and the second mounting portion 11 is arranged on the second insulating member 10, so that the conductive brush 20 can be connected with the second insulating member 10, so that the connection between the main body 21 and the second insulating member 10 can be more stable, and the conductive brush 20 can perform better conductive work.

[0045] The first mounting portion 211 can rotate relative to the second mounting portion 11, that is, the first mounting portion 211 and the second mounting portion 11 are rotationally matched, so that the conductive brush 20 can rotate relative to the second insulating member 10. In this way, when the charged member 43 drives the conductive brush 20 to move, the conductive brush 20 will rotate accordingly, which can reduce the impact force of the charged member 43 on the conductive brush 20, thereby protecting the conductive brush 20.

[0046] Specifically, Figure 2 and Figure 3 As shown, one of the first mounting portion 211 and the second mounting portion 11 is a matching column, and the other of the first mounting portion 211 and the second mounting portion 11 is a matching hole. In other words, if the first mounting portion 211 can be a matching column, then the second mounting portion 11 can be a matching hole. Through the matching of the matching column and the matching hole, the conductive brush 20 can be quickly connected to the second insulating member 10, thereby improving the assembly efficiency, and the matching column and the matching hole can be better rotated relative to each other. In addition, the structure of the matching column and the matching hole is simple, which is convenient for processing and setting.

[0047] In another alternative, the insulating support member includes: a plurality of first insulating members 30, the plurality of first insulating members 30 and the plurality of conductive brushes 20 are alternately distributed, and the first insulating member 30 is an elastic member. It should be noted that when the driving device 4 is working, the charged member 43 is usually in a rotating working state, and the conductive brush 20 cooperates with the charged member 43, so that the charged member 43 will also drive the conductive brush 20 to move while rotating. Therefore, the conductive brush 20 is rotatably arranged on the second insulating member 10, so that when the charged member 43 drives the conductive brush 20 to move, the conductive brush 20 will rotate accordingly, which can reduce the impact force of the charged member 43 on the conductive brush 20, thereby protecting the conductive brush 20.

[0048] At this time, the first insulating member 30 is an elastic member, specifically an insulating spring. Multiple first insulating members 30 are alternately distributed with multiple conductive brushes 20, so that two adjacent conductive brushes 20 can be connected, and the first insulating member 30 is an insulating material, which plays an insulating effect, preventing the current from flowing between adjacent conductive brushes 20, thereby affecting the reduction of resistance in the current flow path, and the first insulating member 30 can play a reset role. Since the charged member 43 will generate a certain axial and radial torque when rotating, when the conductive brush 20 moves under the influence of the charged member 43, the first insulating member 30 can hinder the movement of the conductive brush 20, thereby improving the ability of the conductive brush 20 to resist axial and radial torques, reducing the wear of the conductive brush 20, and making the work of the conductive brush 20 more stable.

[0049] In the above-mentioned installation method of the insulating support and the housing 41, the second insulating member 10 can be interference-fitted with the side wall of the installation groove 411, and the side of the second insulating member 10 away from the conductive brush 20 is limitedly matched with the bottom wall of the installation groove 411, and the conductive brush 20 is rotatably arranged on the second insulating member 10. At this time, the first insulating member 30 can reduce the impact force of the live member 43 on the conductive brush 20 and protect the conductive brush 20. In addition, there are two other ways to install the conductive brush assembly 1 on the driving device 4. The first is to install the outer peripheral wall with the inner wall of the housing 41 of the driving device 4 by interference fit, and the conductive brush 20 and the second insulating member 10 are both interference-fitted with the inner wall of the housing 41, so the conductive brush 20 cannot rotate relative to the second insulating member 10, and the first insulating member 30 does not work at this time. The second method is side installation, in which the second insulating member 10 is assembled to the side of the housing 41 of the drive device 4 by tightening bolts, and the conductive brush 20 can be installed on the side of the non-drive device side of the second insulating member 10. At this time, the second insulating member 10 and the conductive brush 20 do not need to be limited to an interference fit with the housing 41, but only need to contact. In this installation method, the conductive brush 20 can rotate relative to the second insulating member 10, and the first insulating member 30 can play a role.

[0050] In addition, if Figure 1 and Figure 2 As shown, the conductive brush 20 includes: a main body 21 and a contact part 22, the main body 21 is arranged on the insulating support, and the contact part 22 is arranged on the side of the main body 21 facing the live part 43. Among them, the main body 21 is the main part of the conductive brush 20, and the main body 21 mainly plays a conductive role. It should be noted that the main body 21 is electrically connected to the shell 41, so that the current on the main body 21 can flow into the shell 41, and then be grounded through the shell 41. The material of the main body 21 can be aluminum material, of course, it can also be other suitable materials.

[0051] The contact portion 22 mainly plays the role of contact and conduction. The contact portion 22 is arranged on the side of the main body 21 facing the charged part 43. In this way, the arrangement of the contact portion 22 is more reasonable, the length of the contact portion 22 can be reduced, and the contact portion 22 is convenient for matching with the charged part 43. In this way, the current on the charged part 43 can flow into the main body 21 through the contact portion 22, and then flow into the housing 41 from the main body 21, and finally the current is introduced into the ground.

[0052] In addition, there are multiple contact parts 22, and the multiple contact parts 22 are spaced apart from each other, and the contact part 22 includes multiple flexible structural parts. There are multiple contact parts 22, and the multiple contact parts 22 are spaced apart from each other, so that the contact area between the contact part 22 and the charged part can be increased, thereby improving the flow guiding effect of the conductive brush assembly 1. The contact part 22 includes multiple flexible structural parts, and the multiple flexible structural parts can improve the impact resistance and wear resistance of the contact part 22. When the charged part 43 rotates and drives the contact part 22 to move, the multiple flexible structural parts can buffer the impact force of the charged part 43 according to their own flexibility, thereby extending the service life of the contact part 22. The contact part 22 can be a carbon brush.

[0053] like Figure 4 As shown, the driving device 4 according to the embodiment of the present invention includes a housing 41, a transmission shaft and a bearing 42. The housing 41 mainly serves as a mounting device, and other components of the driving device 4 can be mounted inside the housing 41. The housing 41 can isolate the internal components from the external environment, so that the driving device 4 can work normally. The transmission shaft mainly serves as a power output, and the bearing 42 serves as a supporting and protective function.

[0054] like Figure 4 As shown, the housing 41 is provided with a mounting cavity, and the transmission shaft is at least partially disposed in the housing 41. It can be understood that the transmission shaft is at least partially disposed in the mounting cavity, so that the transmission shaft can cooperate with the rotor in the mounting cavity, so as to rotate, and the transmission shaft portion can extend from the mounting cavity, so that the transmission shaft and other components can be conveniently matched.

[0055] like Figure 4As shown, the bearing 42 is arranged on the housing 41, and the bearing 42 cooperates with the transmission shaft. The bearing 42 is arranged on the housing 41, so that the bearing 42 can be fixed, so that the arrangement of the bearing 42 is more reliable and stable, and the bearing 42 can work better. Specifically, the bearing 42 can cooperate with the transmission shaft, so that the bearing 42 can support and protect the transmission shaft, reduce the friction of the transmission shaft, and thus extend the service life of the transmission shaft.

[0056] In addition, if Figure 4 As shown, the conductive brush assembly 1 is arranged on the housing 41, and a plurality of conductive brushes 20 are electrically connected to the transmission shaft. The conductive brush assembly 1 is arranged on the housing 41, so that the position of the conductive brush assembly 1 can be fixed, so that the arrangement of the conductive brush assembly 1 is more stable, and in the drive device 4, the transmission shaft is equivalent to the live part 43, and the conductive brush assembly 1 can better cooperate with the transmission shaft to guide the current on the transmission shaft. Specifically, a plurality of conductive brushes 20 are electrically connected to the transmission shaft, so that the resistance in the current flow path can be reduced, and the current can flow better through the conductive brush 20, so as to achieve the effect of short-circuiting the bearing 42 and protect the bearing 42.

[0057] Furthermore, the insulating support can also block more lubricating oil from entering from the outer diameter of the insulating support, so that the lubricating oil can enter the bearing 42 through the inner diameter of the conductive brush 20, increasing the oil volume and preventing the conductive brush 20 from having a reduced conductive effect due to excessive lubricating oil adhesion.

[0058] The vehicle according to the embodiment of the present invention comprises: the driving device 4 mentioned above.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present invention, a first feature "above", "above" and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A conductive brush assembly (1), characterized in that: include: Insulation support; A plurality of conductive brushes (20) are arranged at intervals on the insulating support member, the plurality of conductive brushes (20) are all grounded, and the plurality of conductive brushes (20) are electrically connected to the live member (43) respectively.

2. The conductive brush assembly (1) according to claim 1, characterized in that: The insulating support member comprises: a plurality of first insulating members (30), a plurality of the conductive brushes (20) and a plurality of the first insulating members (30) being alternately distributed.

3. The conductive brush assembly (1) according to claim 1 or 2, characterized in that: A plurality of the conductive brushes (20) are arranged at intervals along the circumferential direction.

4. The conductive brush assembly (1) according to claim 2, characterized in that: The plurality of conductive brushes (20) are arranged at intervals in the circumferential direction, and the plurality of first insulating members (30) and the plurality of conductive brushes (20) together form an annular structure.

5. The conductive brush assembly (1) according to claim 3, characterized in that: The insulating support member further comprises: a second insulating member (10), the second insulating member (10) having a mounting surface, and the plurality of conductive brushes (20) are all mounted on the mounting surface.

6. The conductive brush assembly (1) according to claim 5, characterized in that: The conductive brush (20) is provided with a first mounting portion (211), and the second insulating member (10) is provided with a second mounting portion (11), and the first mounting portion (211) is rotatable relative to the second mounting portion (11).

7. The conductive brush assembly (1) according to claim 6, characterized in that: One of the first mounting portion (211) and the second mounting portion (11) is a matching column, and the other of the first mounting portion (211) and the second mounting portion (11) is a matching hole.

8. The conductive brush assembly (1) according to claim 6, characterized in that: The insulating support member comprises: a plurality of first insulating members (30), a plurality of the conductive brushes (20) and a plurality of the first insulating members (30) are alternately distributed, and the first insulating members (30) are elastic members.

9. The conductive brush assembly (1) according to claim 1, characterized in that: The conductive brush (20) comprises: a main body (21) and a contact part (22); the main body (21) is arranged on the insulating support member; and the contact part (22) is arranged on a side of the main body (21) facing the live member (43).

10. The conductive brush assembly (1) according to claim 9, characterized in that: There are a plurality of contact portions (22), and the plurality of contact portions (22) are arranged at intervals.

11. A driving device (4), characterized in that: include: The conductive brush assembly (1) according to any one of claims 1 to 10.

12. A vehicle, characterized in that: include: A drive device (4) as claimed in claim 11.

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