Conductive brush assembly, speed reducer, electric assembly and vehicle

Abstract

The utility model relates to a conductive brush assembly, a speed reducer, an electric assembly and a vehicle, the conductive brush assembly comprises a conductive body and a conductive piece, the conductive body is used for being fixedly connected with a box body and located on one side of a bearing, a through hole is formed in the conductive body, and lubricating oil can pass through the through hole; the conductive piece is installed on the conductive body and used for making contact with the bearing and / or the transmission shaft. Splashing lubricating oil on one side of the conductive body can reach the other side through the through hole, the lubricating effect of the bearing cannot be affected, and therefore the problem that the lubricating effect of the bearing is affected due to the fact that a conductive brush is installed in the prior art is solved, and the lubricating effect of the bearing is guaranteed while the problem of electric corrosion of the bearing is solved.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and particularly to a conductive brush assembly, a speed reducer, an electric assembly and a vehicle. Background Art

[0002] During the use of motors, the problem of bearing electro-corrosion caused by shaft current often occurs. Shaft current is the current flowing through the shaft, bearing near the motor to the casing. The generation of shaft current is due to shaft voltage and a closed loop. Electro-corrosion can cause serious damage to the bearings near the motor, greatly shortening the service life of the bearings. Slightly damaged ones can operate for thousands of hours, and severely damaged ones can even only operate for a few hours, which has a great impact on safety performance. Moreover, the direct and indirect economic losses caused by bearing damage and replacement are relatively large.

[0003] In the related art, in order to solve the risk of electro-corrosion, a conductive brush is added to the casing. The conductive brush electrically connects the shaft and the casing to reduce the shaft voltage to solve bearing electro-corrosion. However, adding a conductive brush will also block the lubricating oil from entering the bearing, affecting the bearing lubrication and resulting in bearing damage. Utility Model Content

[0004] The embodiments of the present application provide a conductive brush assembly, a speed reducer, an electric assembly and a vehicle, which can solve the problem of affecting the bearing lubrication effect due to the installation of a conductive brush in the prior art.

[0005] To achieve the above object, according to the first aspect of the present application, a conductive brush assembly is provided, including:

[0006] A conductive body for fixedly connecting with a box body, located on one side of a bearing. A through hole is provided on the conductive body, and the through hole is used for the lubricating oil to pass through;

[0007] A conductive member is arranged on the conductive body, and the conductive member is used for contacting with a transmission shaft and / or the bearing.

[0008] Optionally, an oil passing hole is provided on the conductive body, and the oil passing hole is located on one side of the through hole. The oil passing hole is used for communicating with the oil path of the box body.

[0009] Optionally, a mounting hole is provided on the conductive body, and the mounting hole is used for mounting the transmission shaft.

[0010] Optionally, the conductive member includes a first conductive brush, located outside the mounting hole. One end of the first conductive brush is fixedly connected with the conductive body, and the other end is used for contacting with the bearing.

[0011] Optionally, a plurality of the first conductive brushes are arranged at intervals along the circumferential direction of the mounting hole.

[0012] Optionally, the first conductive brush is arranged at an angle with respect to the radial direction of the mounting hole.

[0013] Optionally, the conductive member further includes a second conductive brush located within the mounting hole. One end of the second conductive brush is fixedly connected to the conductive body, and the other end is for contacting the transmission shaft.

[0014] Optionally, the second conductive brush extends along the radial direction of the mounting hole, and a plurality of the second conductive brushes are arranged at intervals along the circumferential direction of the mounting hole.

[0015] Optionally, the conductive body includes a connecting portion located at the edge of the conductive body, and the connecting portion is used for detachably and fixedly connecting with the box body.

[0016] Optionally, the conductive body includes:

[0017] A first conductive portion on which the conductive member is mounted;

[0018] A second conductive portion arranged on one side of the first conductive portion, with the first conductive portion and the second conductive portion being spaced apart;

[0019] A conductive column located between the first conductive portion and the second conductive portion, connecting the first conductive portion and the second conductive portion. The first conductive portion, the second conductive portion, and the conductive column enclose the through hole.

[0020] Optionally, the second conductive portion is arranged obliquely at a preset angle with respect to the plane where the first conductive portion is located.

[0021] According to the second aspect of the present application, a speed reducer is provided, including:

[0022] The above-mentioned conductive brush assembly;

[0023] A transmission mechanism including a transmission shaft and a bearing, with the transmission shaft mounted on the bearing;

[0024] A box body, with the transmission mechanism and the conductive brush assembly mounted within the box body;

[0025] Wherein, the conductive body is fixedly connected to the box body, the conductive body is located on one side of the bearing, a lubrication space is formed between the conductive body and the bearing, the through hole communicates with the lubrication space, and the conductive member contacts the transmission shaft and / or the bearing.

[0026] Optionally, it further includes:

[0027] A first seal is located between the bearing and the conductive body. The bearing and the conductive body are hermetically connected through the first seal, and the first conductive brush is located on the side of the first seal facing away from the lubrication space.

[0028] Optionally, it further includes:

[0029] A second seal is disposed opposite and spaced apart from the first seal. The bearing and the conductive body are hermetically connected through the second seal, and the first conductive brush is located between the first seal and the second seal.

[0030] Optionally, it further includes:

[0031] The housing is provided with an oil passage, and the conductive body is provided with an oil through-hole that communicates the oil passage and the lubrication space.

[0032] According to the third aspect of the present application, an electric assembly is provided, including the above-mentioned speed reducer.

[0033] According to the fourth aspect of the present application, a vehicle is provided, including the above-mentioned electric assembly.

[0034] In the conductive brush assembly, speed reducer, electric assembly, and vehicle according to the embodiments of the present application, the conductive brush assembly includes a conductive body and a conductive member. The conductive body is used for fixedly connecting with the housing, and the conductive member is fixed on the conductive body. The conductive member is used for connecting the bearing and / or the transmission shaft. By conducting the transmission shaft and the housing through the conductive brush assembly, the shaft voltage of the transmission shaft is reduced, and the problem of electrical corrosion of the bearing is solved. The conductive body is provided with a through-hole, and the conductive body is located on one side of the bearing. The splashed lubricating oil on one side of the conductive body can reach the other side through the through-hole and enter the bearing, without affecting the lubrication effect of the bearing. Thus, the problem in the prior art that the lubrication effect of the bearing is affected due to the installation of the conductive brush is overcome, and while solving the problem of electrical corrosion of the bearing, the lubrication effect of the bearing is ensured.

[0035] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0038] Figure 1 is the first axonometric view of the conductive brush assembly provided in the exemplary embodiment of the present disclosure;

[0039] Figure 2 is the second axonometric view of the conductive brush assembly provided in the exemplary embodiment of the present disclosure;

[0040] Figure 3 is the plan view of the conductive brush assembly provided in the exemplary embodiment of the present disclosure;

[0041] Figure 4 is Figure 3 the sectional view taken along line A-A in

[0042] Figure 5 is the installation schematic diagram of the conductive brush assembly provided in the exemplary embodiment of the present disclosure;

[0043] Figure 6 is Figure 5 the partial enlarged view at position B in

[0044] Figure 7 is the partial structural schematic diagram of the electric assembly provided in the exemplary embodiment of the present disclosure.

[0045] Description of reference numerals:

[0046] 100, conductive brush assembly;

[0047] 110, conductive body; 111, mounting hole; 112, through hole; 113, oil passing hole; 114, connecting portion; 115, first conductive portion; 116, second conductive portion; 1161, inclined section; 1162, connecting section; 117, conductive column;

[0048] 120, conductive member; 121, first conductive brush; 122, second conductive brush;

[0049] 200, transmission mechanism; 210, transmission shaft; 220, bearing; 230, lubrication space; 240, first seal; 250, second seal;

[0050] 300, housing; 310, motor housing; 320, front housing; 330, motor rear end cover. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0052] See Figure 1 、 Figure 2 、 Figure 4 and Figure 5 ,This application embodiment provides a conductive brush assembly 100. The conductive brush assembly 100 can be applied to a speed reducer. The speed reducer includes a conductive brush assembly 100, a transmission mechanism 200, a housing 300, and a gear assembly. The conductive brush assembly 100, the transmission mechanism 200, and the gear assembly are all installed in the housing 300. The transmission mechanism 200 includes a transmission shaft 210 and a bearing 220. The transmission shaft 210 is installed on the bearing 220. One end of the transmission shaft 210 is connected to the output end of the motor, and the other end is connected to the gear assembly. The bearing 220 is fixedly connected to the housing 300. The conductive brush assembly 100 can be installed inside the bearing. The inside of the bearing refers to the space between the bearing and the gear assembly.

[0053] The conductive brush assembly 100 includes a conductive body 110 and a conductive member 120. The conductive body 110 is used to be fixedly connected to the housing 300. The conductive body 110 is located on one side of the bearing 220, such as inside the bearing. A through hole 112 is provided on the conductive body 110. The through hole 112 is used for lubricating oil to pass through. The lubricating oil passes through the through hole 112 and enters the bearing 220 to lubricate the bearing 220. The conductive member 120 is arranged on the conductive body 110. The conductive member 120 is used to contact the transmission shaft 210 and / or the bearing 220. If the conductive member 120 contacts the transmission shaft 210, the transmission shaft 210 is conducted to the housing 300 through the conductive member 120 and the conductive body 110, and then grounded through the housing 300 and the vehicle body, reducing the voltage of the transmission shaft 210. If the conductive member 120 contacts the bearing 220, the bearing 220 is conducted to the housing 300 through the conductive member 120 and the conductive body 110, and then grounded through the housing 300 and the vehicle body, reducing the voltage of the bearing 220. At the same time, the problems of electrical corrosion and lubrication of the bearing 220 are solved, and the service life of the bearing 220 is improved.

[0054] In some embodiments, see Figure 1 、 Figure 2 and Figure 5 ,The conductive body 110 is provided with a mounting hole 111. The mounting hole 111 is used to mount the transmission shaft 210. The conductive body 110 is sleeved on the transmission shaft 210. The conductive body 110 can be circular. The conductive body 110 can be made of a metal material with good electrical conductivity, or a conductive material can be provided inside the conductive body 110. The conductive material is connected to the conductive member 120 to form a conductive path.

[0055] In some embodiments, see Figure 1 、 Figure 2, a plurality of through holes 112 are provided on the conductive body 110, and the plurality of through holes 112 are arranged at intervals along the circumferential direction of the mounting hole 111. The distance between any adjacent through holes 112 is the same. It can be understood that the splashing direction of the splashing lubricating oil is not fixed. The arrangement of the plurality of through holes 112 ensures that the lubricating oil in different directions can enter the bearing 220 through the through holes 112 as much as possible, improving the lubrication effect of the bearing 220.

[0056] In some embodiments, refer to Figure 2 , Figure 4 and Figure 5 , the conductive member 120 includes a first conductive brush 121. The first conductive brush 121 is located outside the mounting hole 111. One end of the first conductive brush 121 is fixedly connected to the conductive body 110, and the other end is used to contact the bearing 220. The first conductive brush 121 includes a plurality of brush filaments. The brush filaments are made of a conductive fiber material with good electrical conductivity. The brush filaments have certain strength, hardness and wear resistance and can swing during use. In some embodiments, a plurality of first conductive brushes 121 can be provided, and the plurality of first conductive brushes 121 are mounted on the conductive body 110. The plurality of first conductive brushes 121 are arranged at intervals along the circumferential direction of the mounting hole 111. All the first conductive brushes 121 are located on the same circumference. The distance between any adjacent two first conductive brushes 121 is the same. In some embodiments, the extending direction of the first conductive brush 121 forms a certain angle with the radial direction of the mounting hole 111. For example, the first conductive brush 121 extends along the axial direction of the transmission shaft 210, and the extending direction of the first conductive brush 121 forms a 90° angle with the radial direction of the mounting hole 111. The ends of the plurality of first conductive brushes 121 facing away from the conductive body 110 are used to contact the bearing 220. For example, the first conductive brush 121 is used to contact the inner side of the bearing 220.

[0057] In some embodiments, refer to Figure 1 and Figure 2 , an oil through hole 113 is provided on the conductive body 110. The oil through hole 113 penetrates through both side surfaces of the conductive body 110. The oil through hole 113 is located on the side of the through hole 112 away from the mounting hole 111. The oil through hole 113 is used to communicate with the oil passage of the box body 300.

[0058] In the embodiments of the present application, the conductive brush assembly 100 is installed on the transmission shaft 210. The conductive body 110 is located inside the bearing, and a certain gap is reserved between the conductive body 110 and the bearing 220. The oil through hole 113 communicates the gap and the oil passage, introducing the lubricating oil in the oil passage between the bearing 220 and the conductive body 110. In addition to lubricating the bearing 220 by splashing lubricating oil, the bearing 220 is also lubricated by the lubricating oil in the oil passage, ensuring the lubrication effect of the bearing 220.

[0059] In some embodiments, refer to Figure 5, the conductive member 120 further includes a second conductive brush 122. The second conductive brush 122 is located within the mounting hole 111. One end of the second conductive brush 122 is fixedly connected to the conductive body 110, and the other end is adapted to contact the transmission shaft 210. The second conductive brush 122 includes a plurality of brush filaments, and the brush filaments are made of a conductive fiber material with good electrical conductivity. The brush filaments have a certain strength, hardness, and wear resistance, and can swing during use. In some embodiments, a plurality of second conductive brushes 122 are provided within the mounting hole 111. The plurality of second conductive brushes 122 are circumferentially spaced along the mounting hole 111. The distance between any two adjacent second conductive brushes 122 is the same. The second conductive brush 122 extends radially along the mounting hole 111, and the end of the second conductive brush 122 facing away from the conductive body 110 is adapted to contact the transmission shaft 210. The second conductive brush 122 is in interference fit with the transmission shaft 210 to ensure the conductive effect.

[0060] In the embodiment of the present application, the second conductive brush 122 is disposed on the inner side of the mounting hole 111 of the conductive body 110. The second conductive brush 122 cooperates with the transmission shaft 210, and the second conductive brush 122 guides the current of the transmission shaft 210 to the conductive body 110. The second conductive brush 122 has a certain deformation ability. During the rotation of the transmission shaft 210, the second conductive brush 122 always contacts the transmission shaft 210, ensuring the conductive effect without affecting the rotation of the transmission shaft 210.

[0061] In some embodiments, referring to Figure 1 , Figure 2 and Figure 5 , the conductive body 110 includes a connecting portion 114, and the connecting portion 114 is located at the edge of the conductive body 110. Such as on the side of the conductive body 110 facing away from the mounting hole 111. The connecting portion 114 is used for fixedly connecting with the box body 300. In some embodiments, a plurality of connecting portions 114 are provided along the circumference of the conductive body 110, and the plurality of connecting portions 114 are spaced apart. Exemplarily, the connecting portion 114 is a connecting ear plate, and a pin hole is provided on the connecting ear plate. The connecting ear plate protrudes beyond the edge of the conductive body 110.

[0062] In the embodiment of the present application, the conductive body 110 is detachably connected to the box body 300 through the connecting portion 114, which facilitates the overall installation and disassembly of the conductive brush assembly 100.

[0063] In some embodiments, referring to Figure 1 and Figure 2, the conductive body 110 includes a first conductive portion 115, a second conductive portion 116, and a plurality of conductive columns 117. The first conductive portion 115 has an annular structure, and the mounting hole 111 is provided on the first conductive portion 115. A first conductive brush 121 is provided on the side surface of the first conductive portion 115. The second conductive brush 122 is fixed on the first conductive portion 115, and the extending direction of the first conductive brush 121 is set at 90° to the extending direction of the second conductive brush 122. The second conductive portion 116 has an annular structure, the second conductive portion 116 is provided outside the first conductive portion 115, and the first conductive portion 115 and the second conductive portion 116 are spaced apart. The plurality of conductive columns 117 are located between the first conductive portion 115 and the second conductive portion 116, the conductive columns 117 connect the first conductive portion 115 and the second conductive portion 116, and the plurality of conductive columns 117 are spaced apart along the circumferential direction of the mounting hole 111. The first conductive portion 115, the second conductive portion 116, and the conductive columns 117 enclose a through hole 112. An oil passing hole 113 is formed in the second conductive portion 116. The connecting portion 114 is provided on the side of the second conductive portion 116 facing away from the first conductive portion 115.

[0064] In the embodiment of the present application, the conductive body 110 includes a first conductive portion 115, a second conductive portion 116, and a plurality of conductive columns 117, with a simple structure and convenient processing.

[0065] In some embodiments, the number of the conductive columns 117 is less than the number of the first conductive brushes 121. For example, six conductive columns 117 are provided, and the six conductive columns 117 are equidistantly spaced along the circumferential direction of the first conductive portion 115. The number of the first conductive brushes 121 can be an integer multiple of the number of the conductive columns 117, and several first conductive brushes 121 transmit current through one conductive column 117, reducing the number of the conductive columns 117. The area of the through hole 112 is increased as much as possible to improve the lubrication effect.

[0066] In some embodiments, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the second conductive portion 116 is inclined at a preset angle with respect to the plane where the first conductive portion 115 is located. The value of the preset angle α ranges from 15° to 30°.

[0067] Exemplarily, refer to Figure 3 and Figure 4, the second conductive part 116 includes an inclined section 1161 and a connecting section 1162. The inclined section 1161 is located between the connecting section 1162 and the conductive column 117. The inclined section 1161 is inclined, and the inclined section 1161 inclines towards the bearing 220 side. The first conductive part 115 and the conductive column 117 are in the same plane, and the plane where the first conductive part 115 and the conductive column 117 are located is parallel to the side surface of the bearing 220. The inclined section 1161 forms a preset angle with the plane where the first conductive part 115 and the conductive column 117 are located. The cross-sectional shape of the connecting section 1162 is rectangular, and the side surface of the connecting section 1162 facing away from the inclined section 1161 is used to fit with the side surface of the bearing 220.

[0068] In the embodiment of the present application, the second conductive part 116 is arranged at a certain angle with the first conductive part 115, so that the middle area of the conductive body 110 bulges towards the side away from the bearing 220, forming a bulge-like structure, which is beneficial to the lubricating oil splashed on the surface of the conductive body 110 to converge and drip into the through hole 112, improving the lubrication effect.

[0069] See Figure 5 , Figure 6 and Figure 7 , the embodiment of the present application also provides a speed reducer, which includes a transmission mechanism 200 and the conductive brush assembly 100 of the above embodiment. The structure of the conductive brush assembly 100 of the speed reducer is the same as that of the conductive brush assembly 100 in each of the above embodiments, and will not be described in detail here.

[0070] See Figure 5 , Figure 6 and Figure 7, The speed reducer includes a motor, a transmission mechanism 200, a reduction gear set, and a housing 300. The conductive brush assembly 100, the motor, the transmission mechanism 200, and the transmission are all installed inside the housing 300. The housing 300 includes a motor housing 310, a front housing 320, a rear housing, and a motor rear end cover 330. The motor rear end cover 330 is located at one end of the motor housing 310, and the motor rear end cover 330 is detachably and fixedly connected to the motor housing 310. The motor is installed inside the motor housing 310. The front housing 320 is installed at the end of the motor housing 310 facing away from the motor rear end cover 330. The rear housing is detachably and fixedly connected to the front housing 320, and the transmission is installed in the space enclosed by the rear housing and the front housing 320. The front housing 320 and the motor housing 310 can adopt an integrally formed structure. The output shaft of the motor is connected to the transmission through the transmission mechanism 200. The transmission mechanism 200 includes a transmission shaft 210 and a bearing 220, and the transmission shaft 210 is installed on the bearing 220. The bearing 220 is detachably connected to the front housing 320 through a bearing seat. The conductive body 110 is sleeved on the transmission shaft 210, the transmission shaft 210 is located inside the mounting hole 111, and the conductive body 110 is detachably and fixedly connected to the front housing 320. The conductive body 110 is located on one side of the bearing 220, and the conductive body 110 is located on the side of the bearing 220 close to the motor. A lubrication space 230 is formed between the conductive body 110 and the bearing 220, the through hole 112 communicates with the lubrication space 230, and the first conductive brush 121 is located between the conductive body 110 and the bearing 220.

[0071] In the embodiment of the present application, the current of the bearing 220 is guided to the housing 300 through the first conductive brush 121, so as to solve the problem of electrical corrosion of the bearing 220. The conductive body 110 is located inside the bearing 220, occupying a small space. Moreover, the through hole 112 on the conductive body 110 communicates with the lubrication space 230, and the splashed lubricating oil enters the lubrication space 230 from the through hole 112, realizing splash lubrication of the bearing 220 and ensuring the lubrication effect of the bearing 220.

[0072] In some embodiments, see Figure 6 , it further includes a first seal 240, and the first seal 240 is an O-ring. The first seal 240 is located between the bearing 220 and the conductive body 110, and the bearing 220 and the conductive body 110 are hermetically connected through the first seal 240. The first conductive brush 121 is located on the side of the first seal 240 facing away from the lubrication space 230.

[0073] In the embodiment of the present application, the first seal 240 is arranged at the edge of the lubrication space 230, increasing the residence time of the lubricating oil in the lubrication space 230 and improving the lubrication effect of the bearing 220.

[0074] In some embodiments, see Figure 6, further including a second seal 250, the second seal 250 being a sealing ring. The second seal 250 is disposed at a relative interval with respect to the first seal 240, and the bearing 220 and the conductive body 110 are hermetically connected through the second seal 250. The first conductive brush 121 is located between the first seal 240 and the second seal 250. The first seal 240, the second seal 250, the bearing 220 and the conductive body 110 enclose an annular sealing space, and the first conductive brush 121 is fixed in the sealing space, preventing the first conductive brush 121 from being affected by lubricating oil, and improving the conductive performance and service life of the first conductive brush 121.

[0075] In some embodiments, an oil passage is provided on the housing 300, and the oil through-hole 113 communicates the oil passage and the lubrication space 230.

[0076] In the embodiments of the present application, the oil passage on the housing 300 is communicated with the lubrication space 230 by using the oil through-hole 113, and a part of the lubricating oil in the oil passage is introduced into the lubrication space 230 to ensure that the lubricating oil in the lubrication space 230 is sufficient and ensure the lubrication effect of the bearing 220.

[0077] The embodiments of the present application further provide a vehicle, including the speed reducer according to any one of the above.

[0078] The embodiments of the present application further provide a vehicle, including the electric assembly according to any one of the above.

[0079] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0080] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0081] Among the embodiments, embodiments, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0082] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A conductive brush assembly (100), characterized in that, Comprising: A conductive body (110) for fixedly connecting with a box body (300), located on one side of a bearing (220). A through hole (112) is provided on the conductive body (110), and the through hole (112) is used for allowing lubricating oil to pass through; A conductive component (120) is arranged on the conductive body (110), and the conductive component (120) is used for contacting with a transmission shaft (210) and / or the bearing (220).

2. The conductive brush assembly (100) according to claim 1, wherein An oil passing hole (113) is provided on the conductive body (110), the oil passing hole (113) is located on one side of the through hole (112), and the oil passing hole (113) is used for communicating with an oil passage of the box body (300).

3. The conductive brush assembly (100) according to claim 1, characterized in that, An installation hole (111) is provided on the conductive body (110), and the installation hole (111) is used for installing the transmission shaft (210).

4. The conductive brush assembly (100) according to claim 3, wherein, The conductive component (120) includes a first conductive brush (121), located outside the installation hole (111). One end of the first conductive brush (121) is fixedly connected with the conductive body (110), and the other end is used for contacting with the bearing (220).

5. The conductive brush assembly (100) according to claim 4, characterized in that, A plurality of the first conductive brushes (121) are arranged at intervals along the circumferential direction of the installation hole (111).

6. The conductive brush assembly (100) according to claim 5, wherein The first conductive brush (121) is arranged at a certain angle with respect to the radial direction of the installation hole (111).

7. The conductive brush assembly (100) according to claim 3, wherein The conductive component (120) further includes a second conductive brush (122), located inside the installation hole (111). One end of the second conductive brush (122) is fixedly connected with the conductive body (110), and the other end is used for contacting with the transmission shaft (210).

8. The conductive brush assembly (100) according to claim 7, characterized in that, The second conductive brush (122) extends along the radial direction of the installation hole (111), and a plurality of the second conductive brushes (122) are arranged at intervals along the circumferential direction of the installation hole (111).

9. The conductive brush assembly (100) according to claim 1, characterized in that, The conductive body (110) includes a connecting portion (114), the connecting portion (114) is located at the edge of the conductive body (110), and the connecting portion (114) is used for detachably and fixedly connecting with the box body (300).

10. The conductive brush assembly (100) according to claim 1, characterized in that, The conductive body (110) includes: A first conductive portion (115), on which the conductive component (120) is installed; A second conductive portion (116), arranged on one side of the first conductive portion (115), and the first conductive portion (115) and the second conductive portion (116) are arranged at intervals; A conductive column (117), located between the first conductive portion (115) and the second conductive portion (116), the conductive column (117) connects the first conductive portion (115) and the second conductive portion (116), and the first conductive portion (115), the second conductive portion (116) and the conductive column (117) enclose the through hole (112).

11. The conductive brush assembly (100) according to claim 10, wherein, The second conductive portion (116) is inclined at a preset angle with respect to the plane where the first conductive portion (115) is located.

12. A speed reducer, characterized in that, Comprising: The conductive brush assembly (100) according to any one of claims 1 to 11; The transmission mechanism (200) includes a transmission shaft (210) and a bearing (220), and the transmission shaft (210) is mounted on the bearing (220); A housing (300), wherein the transmission mechanism (200) and the conductive brush assembly (100) are mounted inside the housing (300); Wherein, the conductive body (110) is fixedly connected to the housing (300), the conductive body (110) is located on one side of the bearing (220), a lubrication space (230) is formed between the conductive body (110) and the bearing (220), the through hole (112) communicates with the lubrication space (230), and the conductive member (120) contacts the transmission shaft (210) and / or the bearing (220).

13. The speed reducer according to claim 12, characterized in that, It further includes: A first seal (240), the first seal (240) is located between the bearing (220) and the conductive body (110), the bearing (220) and the conductive body (110) are sealingly connected through the first seal (240), and the conductive member (120) includes a first conductive brush (121), and the first conductive brush (121) is located on the side of the first seal (240) away from the lubrication space (230).

14. The speed reducer according to claim 13, wherein It further includes: A second seal (250), the second seal (250) is arranged at a relative interval with the first seal (240), the bearing (220) and the conductive body (110) are sealingly connected through the second seal (250), and the first conductive brush (121) is located between the first seal (240) and the second seal (250).

15. The speed reducer according to claim 12, wherein, It further includes: The housing (300) is provided with an oil circuit, the conductive body (110) is provided with an oil through hole (113), and the oil through hole (113) communicates the oil circuit and the lubrication space (230).

16. An electric assembly, characterized in that, It includes: The speed reducer according to any one of claims 12 - 15.

17. A vehicle, characterized in that, It includes: The electric assembly according to claim 16.

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