Conductive slip ring

Abstract

The utility model discloses a conductive slip ring. The conductive slip ring comprises a conductive slip ring body and a waterproof element, wherein the bottom of the waterproof element is arranged at the end part of the conductive slip ring body, and the top surface of the waterproof element has an inclined angle relative to the first plane; the diameter of the top surface is greater than or equal to that of the conductive slip ring body; the first plane is a plane perpendicular to the symmetry axis of the conductive slip ring body. Liquid such as water is effectively isolated from being in contact with the end face of the conductive slip ring body, then water on the end face of the conductive slip ring body is prevented from entering the conductive slip ring body, the conductive slip ring body is protected, the good waterproof effect is achieved, and the service life of the conductive slip ring body is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly relates to a conductive slip ring. Background Art

[0002] A conductive slip ring is an electrical component responsible for rotational connection, energy transmission, and signal transmission; when the conductive slip ring is applied to special environments such as wet, corrosive, and underwater operations, it needs to have good waterproofing effects. In practice, the conductive slip ring is made to have waterproofing effects through special process designs.

[0003] In related technologies, waterproofing elements such as a skeleton oil seal or an O-ring are provided at the end of the conductive slip ring, enabling the conductive slip ring to have waterproofing effects. Among them, the conductive slip ring has two installation methods: horizontal and vertical; as Figure 1 shown, when the conductive slip ring is horizontally installed, after liquids such as water and oil drip onto the side wall of the conductive slip ring in the direction indicated by the arrow in Figure 1 , they will slide down along the side wall of the conductive slip ring, and there will be no liquids such as water or oil adhering to the end face of the conductive slip ring, nor will the liquids enter the interior of the conductive slip ring. However, as Figure 2 shown, when the conductive slip ring is vertically installed, liquids such as water will not drip onto the side wall of the conductive slip ring, but will drip onto the end face of the conductive slip ring in the direction indicated by the arrow in Figure 2 and adhere to the end face of the conductive slip ring for a long time. Further, as Figure 2 and Figure 3 shown, waterproofing elements such as a skeleton oil seal are located at the end of the conductive slip ring and sleeved on the rotor of the conductive slip ring. At the same time, the skeleton oil seal will move relative to the rotor in a squeezing contact. After the rotor rotates for a long time, a gap will be generated between the rotor and the waterproofing elements such as the skeleton oil seal. The above gap communicates with the end face, and the liquid on the end face is likely to enter the gap and seep into the interior of the conductive slip ring along the above gap, causing damage to the conductive slip ring and shortening the service life of the conductive slip ring. Utility Model Content

[0004] The purpose of the present application is to provide a conductive slip ring, which effectively isolates the contact between liquids such as water and the end face of the conductive slip ring body, thereby blocking the water on the end face of the conductive slip ring body from entering the interior of the conductive slip ring body, protecting the conductive slip ring body, achieving good waterproofing effects, and extending the service life of the conductive slip ring body.

[0005] The embodiments of the present application are implemented as follows:

[0006] The present application provides a conductive slip ring, which includes a conductive slip ring body and a waterproof element; wherein, the bottom of the waterproof element is arranged at the end of the conductive slip ring body, and the top surface of the waterproof element has an inclination angle relative to the first plane; wherein, the diameter of the top surface is greater than or equal to the diameter of the conductive slip ring body; the first plane is a plane perpendicular to the symmetry axis of the conductive slip ring body.

[0007] In one embodiment, the top surface is a flat surface, or the top surface is an umbrella-shaped surface.

[0008] In one embodiment, the axis of the waterproof element coincides with the symmetry axis of the conductive slip ring body.

[0009] In one embodiment, the inclination angle is 5-8°.

[0010] In one embodiment, a drainage channel is provided on the top surface.

[0011] In one embodiment, the conductive slip ring further includes a drainage pipe, and the drainage pipe is communicated with the drainage channel.

[0012] In one embodiment, the bottom surface of the waterproof element is arranged on the end surface of the conductive slip ring body.

[0013] In one embodiment, the conductive slip ring body has a housing; the waterproof element has a waterproof part and a matching part connected to each other, the matching part extends into the housing, and the waterproof part is clamped at the end of the housing.

[0014] In one embodiment, the conductive slip ring body further includes a stator and a rotor; wherein, at least part of the stator is arranged in the housing, the waterproof element is connected to the stator; at least part of the rotor is arranged in the housing and is connected to the stator.

[0015] In one embodiment, the stator includes a first end cover and a second end cover; wherein, the first end cover is arranged in the housing, the waterproof element is connected to the first end cover; the second end cover has a first part and a second part connected to each other, the first part extends into the housing, and the second part is clamped at the end of the housing; a reinforcing member is connected between the first end cover and the second end cover; the rotor is connected between the first end cover and the second end cover.

[0016] The beneficial effects of the present application compared with the prior art are:

[0017] In this embodiment, a waterproof element is arranged at the end of the conductive slip ring body, so that the diameter of the top surface of the waterproof element is greater than or equal to the diameter of the conductive slip ring body, and the top surface of the waterproof element has an inclination angle relative to the first plane; when the conductive slip ring body is vertically installed and liquids such as water follow Figure 2When dripping in the direction shown by the arrow, it will not fall on the end face of the conductive slip ring body, but will fall on the top face of the waterproof element and slide down along the top face of the waterproof element. This effectively isolates the contact between liquids such as water and the end face of the conductive slip ring body, thereby preventing the water on the end face of the conductive slip ring body from entering the inside of the conductive slip ring body, protecting the conductive slip ring body, achieving a good waterproof effect, and extending the service life of the conductive slip ring body. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the horizontal installation of the conductive slip ring;

[0020] Figure 2 Schematic diagram of the vertical installation of the conductive slip ring;

[0021] Figure 3 For Figure 2 Partial enlarged schematic diagram at position A in

[0022] Figure 4 Schematic diagram of the first implementation manner of the waterproof element provided by the present application;

[0023] Figure 5 Schematic diagram of the second implementation manner of the waterproof element provided by the present application;

[0024] Figure 6 Schematic diagram of the liquid flow direction provided by the present application;

[0025] Figure 7 Schematic diagram of the structure of the drainage channel and the drainage pipe provided by the present application;

[0026] Figure 8 Schematic diagram of the first installation manner of the waterproof element provided by the present application;

[0027] Figure 9 Schematic diagram of the second installation manner of the waterproof element provided by the present application;

[0028] Figure 10 Schematic diagram of the structure of the stator provided by the present application;

[0029] Figure 11 Schematic diagram of the structure of the rotor provided by the present application;

[0030] Figure 12Schematic connection diagram of the conductive slip ring provided by this application.

[0031] Reference numerals:

[0032] 10 - Conductive slip ring; 11 - Conductive slip ring body; 13 - Waterproof element; 20 - Skeleton oil seal; 21 - Gap; 30 - Gas-liquid slip ring; 111 - End face; 120 - Stator; 121 - First end cover; 122 - Second end cover; 123 - Reinforcing member; 124 - Wiring board; 131 - Top surface; 132 - Bottom surface; 133 - Waterproof part; 134 - Fitting part; 135 - First connecting piece; 136 - Counterbore; 137 - Drainage channel; 138 - Drainage pipe; 140 - Rotor; 141 - Hollow shaft; 142 - Ring-shaped element; 143 - Locking ring; 150 - Outer shell; 161 - First bearing; 162 - Second bearing; 171 - First seal; 181 - Second connecting piece; 191 - Connector; 192 - Second seal; 1211 - First groove; 1221 - First part; 1222 - Second part; 1223 - Second groove; 1224 - Third groove; 1411 - First end; 1412 - Second end. Detailed implementation manners

[0033] The terms "first", "second", "third", etc. are only used for distinguishing descriptions, do not represent the serial number of arrangement, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms such as "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "left", "right", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0036] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0037] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0038] A conductive slip ring is an electrical component responsible for rotational connection, energy transmission, and signal transmission; when the conductive slip ring is applied to special environments such as humid, corrosive, and underwater operations, it needs to have good waterproof effects. In practice, the conductive slip ring is made to have waterproof effects through special process design.

[0039] In the related art, waterproof parts such as a skeleton oil seal or an O-ring are provided at the end of the conductive slip ring, so that the conductive slip ring can have waterproof effects. Among them, the conductive slip ring has two installation methods: horizontal and vertical; as Figure 1 shown, when the conductive slip ring 10 is horizontally installed, after liquids such as water and oil drip onto the side wall of the conductive slip ring 10 in the direction indicated by the arrow in Figure 1 , they will slide down along the side wall of the conductive slip ring 10, and there will be no water or oil and other liquids adhering to the end face 111 of the conductive slip ring 10, and the liquid will not enter the inside of the conductive slip ring 10. However, as Figure 2 shown, when the conductive slip ring 10 is vertically installed, water and other liquids will not drip onto the side wall of the conductive slip ring 10, but will drip onto the end face 111 of the conductive slip ring 10 in the direction indicated by the arrow in Figure 2 and adhere to the end face 111 of the conductive slip ring 10 for a long time. Further, as Figure 2 and Figure 3 shown, waterproof parts such as the skeleton oil seal 20 are located at the end of the conductive slip ring 10 and sleeved on the rotor 140 of the conductive slip ring 10. At the same time, the skeleton oil seal 20 will move relative to the rotor 140 and be in extrusion contact. After the rotor 140 rotates for a long time, a gap 21 will be generated between the rotor 140 and the waterproof parts such as the skeleton oil seal 20. The above gap 21 communicates with the end face 111, and the liquid on the end face 111 is easy to enter the gap 21 and seep into the inside of the conductive slip ring 10 along the above gap 21, causing damage to the conductive slip ring 10 and shortening the service life of the conductive slip ring 10.

[0040] To solve the above problems, the present application provides a conductive slip ring 10. The specific structure of the conductive slip ring 10 in the present application will be described in detail below:

[0041] As Figure 4 shown, in this embodiment, the conductive slip ring 10 includes a conductive slip ring body 11 and a waterproof element 13; wherein, the waterproof element 13 is provided at the end of the conductive slip ring body 11. Specifically, the bottom of the waterproof element 13 is provided at the top of the conductive slip ring body 11; the top surface 131 of the waterproof element 13 has an inclination angle G with respect to the first plane, and the diameter K1 of the top surface 131 is greater than or equal to the diameter K2 of the conductive slip ring body 11; wherein, as Figure 4As shown, the symmetry axis of the conductive slip ring body 11 is L, and the first plane P is a plane perpendicular to the symmetry axis L. It should be noted that the first plane P being a plane perpendicular to the symmetry axis L means that the first plane P is completely perpendicular to the symmetry axis L, or the first plane P is approaching perpendicular to the symmetry axis L; exemplarily, when the first plane P is approaching perpendicular to the symmetry axis L, the included angle between the first plane P and the symmetry axis L is between 85° and 95°.

[0042] In this embodiment, a waterproof element 13 is provided at the end of the conductive slip ring body 11, such that the diameter K1 of the top surface 131 of the waterproof element 13 is greater than or equal to the diameter K2 of the conductive slip ring body 11, and such that the top surface 131 of the waterproof element 13 has an inclination angle G with respect to the first plane; it is achieved that when the conductive slip ring body 11 is vertically installed and water and other liquids drip in the Figure 2 direction shown by the arrow, they will not fall on the end face 111 of the conductive slip ring body 11, but will fall on the top surface 131 of the waterproof element 13 and slide off via the top surface 131 of the waterproof element 13. It effectively isolates water and other liquids from contacting the end face 111 of the conductive slip ring body 11, and further blocks the water on the end face 111 of the conductive slip ring body 11 from entering the inside of the conductive slip ring body 11, protects the conductive slip ring body 11, achieves a good waterproof effect, and extends the service life of the conductive slip ring body 11. In addition, it can also be seen that the waterproof method of the conductive slip ring 10 in this embodiment is simple, has low process requirements, is easy to process, and the production and manufacturing cost of the conductive slip ring 10 is relatively low.

[0043] In one embodiment, as Figure 4 shown, the top surface 131 of the waterproof element 13 can be a plane with an inclination angle.

[0044] In this embodiment, the top surface 131 of the waterproof element 13 is set as a plane with an inclination angle, so that when water and other liquids drip on the top surface 131 of the waterproof element 13 along the Figure 2 direction shown by the arrow in, the liquid can slide off quickly in a certain specific direction.

[0045] In another embodiment, as Figure 5 shown, the top surface 131 of the waterproof element 13 can be an umbrella-shaped surface. Specifically, as Figure 5 shown, when the top surface 131 of the waterproof element 13 is an umbrella-shaped surface, the top surface 131 of the waterproof element 13 has an inclination angle G with respect to the first plane P, and the diameter K1 of the top surface 131 of the waterproof element 13 is greater than or equal to the diameter K2 of the conductive slip ring body 11.

[0046] In this embodiment, the top surface 131 of the waterproof element 13 is set as an umbrella-shaped surface, so that when water and other liquids drip on the top surface 131 of the waterproof element 13 along the Figure 6After dripping onto the top surface 131 of the waterproof element 13 in the direction indicated by the arrow, the liquid can quickly slide off in multiple directions, fully isolating the contact between liquids such as water and the end face 111 of the conductive slip ring body 11, achieving a good waterproof effect.

[0047] In one embodiment, the specific value of the inclination angle G can be determined according to the viscosity of the liquid. Exemplarily, the inclination angle G can be 5 - 8°.

[0048] In this embodiment, determining the specific value of the inclination angle G according to the liquid viscosity enables the liquid with the corresponding viscosity to quickly slide off after dripping onto the top surface 131 of the waterproof element 13, fully isolating the contact between liquids such as water and the end face 111 of the conductive slip ring body 11, achieving a good waterproof effect.

[0049] In one embodiment, as Figure 4 and Figure 5 shown, the axis of the waterproof element 13 coincides with the axis of the conductive slip ring body 11. Specifically, as Figure 4 and Figure 5 shown, the axis of the conductive slip ring body 11 is L. In this embodiment, the axis of the waterproof element 13 coincides with the axis L of the conductive slip ring body 11.

[0050] In one embodiment, as Figure 7 shown, a drainage channel 137 is provided on the top surface 131 of the waterproof element 13; the conductive slip ring 10 further includes a drainage pipe 138, and the inlet of the drainage pipe 138 is communicated with the drainage channel 137. Exemplarily, as Figure 7 shown, the drainage channel 137 can be an annular channel and is provided at the edge of the top surface 131 of the waterproof element 13.

[0051] When there is a large amount of liquid, the liquid will gather at the bottom end of the conductive slip ring body 11 after sliding off the top surface 131 of the waterproof element 13. When the gathered liquid is excessive, the liquid is likely to enter the inside of the conductive slip ring body 11, causing damage to the conductive slip ring body 11 and shortening the service life of the conductive slip ring body 11. To solve the above problems, in this embodiment, a drainage channel 137 is provided on the top surface 131 of the waterproof element 13, and the drainage channel 137 is communicated with the inlet of the drainage pipe 138; when liquids such as water drip onto the top surface 131 of the waterproof element 13 in the Figure 7 way indicated by the arrow, the liquid can flow along the drainage channel 137 and the drainage pipe 138 to a certain place, effectively preventing liquids such as water from gathering at the bottom end of the conductive slip ring body 11, thereby effectively blocking the liquid from entering the inside of the conductive slip ring 10, protecting the conductive slip ring 10, and extending the service life of the conductive slip ring 10.

[0052] In one embodiment, as Figure 4 and Figure 5As shown, the bottom surface 132 of the waterproof element 13 can be directly disposed on the end surface 111 of the conductive slip ring body 11. Exemplarily, the bottom surface 132 of the waterproof element 13 can be mounted on the end surface 111 of the conductive slip ring body 11 by means of magnetic connection, welding, glue connection, etc.; as Figure 8 shown, mounting protrusions can be provided on the bottom surface 132 of the waterproof element 13, and mounting grooves can be provided on the end surface 111 of the conductive slip ring body 11; alternatively, mounting grooves can be provided on the bottom surface 132 of the waterproof element 13, and mounting protrusions can be provided on the end surface 111 of the conductive slip ring body 11; the bottom surface 132 of the waterproof element 13 can be mounted on the end surface 111 of the conductive slip ring body 11 through the above-mentioned mounting grooves and mounting protrusions.

[0053] In this embodiment, by directly disposing the bottom surface 132 of the waterproof element 13 on the end surface 111 of the conductive slip ring body 11, while ensuring a good waterproof effect, the height of the conductive slip ring 10 is shortened, the integration degree of the conductive slip ring 10 is improved, the conductive slip ring 10 becomes more miniaturized, and the product competitiveness is enhanced.

[0054] In another embodiment, as Figure 9 shown, the conductive slip ring body 11 has a housing 150, the waterproof element 13 has a waterproof portion 133 and a mating portion 134 connected to each other, the mating portion 134 extends into the housing 150, and the waterproof portion 133 is snap-fitted to the end of the housing 150. Specifically, as Figure 9 shown, the waterproof portion 133 has an opposite first surface and a second surface, the second surface is connected to the mating portion 134, and the second surface is snap-fitted to the end of the housing 150, and the first surface is the top surface 131 of the waterproof element 13.

[0055] It can be seen from the above that in the present application, the waterproof element 13 can be mounted on the conductive slip ring body 11 in a variety of ways, and the mounting methods are diverse and easy to implement.

[0056] In one embodiment, as Figure 9 shown, the conductive slip ring body 11 further includes a stator 120 and a rotor 140; wherein, at least part of the stator 120 is disposed in the housing 150, the waterproof element 13 is connected to the stator 120; at least part of the rotor 140 is disposed in the housing 150 and is connected to the stator 120. Specifically, as Figure 10As shown, the stator 120 includes a first end cover 121, a second end cover 122, a reinforcement member 123 and a wire plate 124; wherein the first end cover 121 is arranged in the housing 150, and the waterproof element 13 is connected to the first end cover 121; the second end cover 122 has a first portion 1221 and a second portion 1222 connected to each other, the first portion 1221 extends into the housing 150, and the second portion 1222 is clamped at the end of the housing 150, and the first end cover 121 and the second end cover 122 are spaced a certain distance apart; the reinforcement member 123, the wire plate 124 and the rotor 140 are connected between the first end cover 121 and the second end cover 122, and the first portion 1221 is sleeved with a second sealing member 192; illustratively, as Figure 9 and Figure 10 As shown, the reinforcement 123 and the wire plate 124 can be located on both sides of the rotor 140; the housing 150 has an upper end and a lower end, and the waterproof part 133 of the waterproof element 13 is clamped on the upper end; the second part 1222 of the second end cover 122 is clamped on the lower end; the above-mentioned second sealing member 192 can be an O-ring.

[0057] like Figure 9 and Figure 10 As shown, a countersunk hole 136 is provided on the waterproof element 13, and a first connecting member 135 is provided in the countersunk hole 136. The first connecting member 135 can be a screw, etc. The first connecting member 135 is used to connect the waterproof element 13 and the stator 120. Liquids such as water can easily enter the countersunk hole 136 and gather in the countersunk hole 136, and finally penetrate into the conductive slip ring body 11, causing damage to the conductive slip ring 10. To this end, the countersunk hole 136 can be sealed with a sealing glue, thereby preventing liquids such as water from gathering in the countersunk hole 136 and then penetrating into the conductive slip ring body 11, thereby providing waterproof protection for the conductive slip ring body 11 and extending the service life of the conductive slip ring body 11.

[0058] like Figure 9 , Figure 10 and Figure 11As shown, the rotor 140 includes a hollow shaft 141 which has a first end 1411, an intermediate portion, and a second end 1412 connected to each other. A first bearing 161 is sleeved on the first end 1411. A first groove 1211 is provided on the first end cover 121, and the first bearing 161 and the first end 1411 are received in the first groove 1211. A ring element 142 and a locking ring 143 are sleeved on the intermediate portion. The locking ring 143 is threadedly connected to the intermediate portion for pressing the ring element 142. Exemplarily, the ring element 142 can be a copper ring and a spacer ring. A second bearing 162 and a first seal 171 are spacedly sleeved on the second end 1412. The second end cover 122 is provided with a second groove 1223 and a third groove 1224 which communicate with each other. The second groove 1223 is close to the first end cover 121, and the second end 1412, the second bearing 162 and the first seal 171 are received in the second groove 1223. A second connecting member 181 is provided on the end face 111 of the second end 1412, and the second connecting member 181 is received in the third groove 1224. As Figure 12 shown, the second connecting member 181 and the second part 1222 can be connected to the gas-liquid slip ring 30. Among them, the second part 1222 can be connected to the gas-liquid slip ring 30 by means of bolt connection.

[0059] As Figure 10 shown, the housing 150 is further provided with a connector 191 for leading out a cable.

[0060] When directly leading out the cable from the housing 150, a gap is likely to appear at the connection between the housing and the cable, and liquids such as water are likely to enter the inside of the conductive slip ring from the above gap, causing damage to the conductive slip ring body 11 and shortening the service life of the conductive slip ring body 11. For this reason, by providing the connector 191 and enabling the connector 191 to have a waterproof effect, it effectively blocks liquids such as water from entering the inside of the conductive slip ring body 11 to protect the conductive slip ring body 11.

[0061] In the prior art, in order to achieve a good waterproof effect, a skeleton oil seal 20 needs to be provided at the end of the conductive slip ring body 11. However, as can be seen from the above content, in this application, there is no need to provide a skeleton oil seal 20 at the end of the conductive slip ring body 11, saving the manufacturing cost of the conductive slip ring body 11.

[0062] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A conductive slip ring, characterized in that, The slip ring includes: A slip ring body; A waterproof element, the bottom of which is provided at the end of the slip ring body, and the top surface of the waterproof element has an inclination angle with respect to a first plane; wherein, the diameter of the top surface is greater than or equal to the diameter of the slip ring body; the first plane is a plane perpendicular to the symmetry axis of the slip ring body.

2. The electrical slip ring according to claim 1, characterized in that, The top surface is a flat surface, or the top surface is an umbrella-shaped surface.

3. The electrical slip ring according to any one of claims 1-2, characterized in that, The axis of the waterproof element coincides with the symmetry axis of the slip ring body.

4. The electrically conductive slip ring according to any one of claims 1-2, characterized in that The inclination angle is 5 to 8°.

5. The electrically conductive slip ring according to claim 2, wherein A drainage channel is provided on the top surface.

6. The electrical slip ring according to claim 5, characterized in that, The slip ring further includes a drainage pipe, and the drainage pipe is communicated with the drainage channel.

7. The electrical slip ring according to claim 1, wherein The bottom surface of the waterproof element is provided on the end surface of the slip ring body.

8. The electrical slip ring according to claim 1, wherein The slip ring body has a housing; the waterproof element has a waterproof part and a fitting part connected to each other, the fitting part extends into the housing, and the waterproof part is clamped at the end of the housing.

9. The electrical slip ring according to claim 8, wherein The slip ring body further includes: A stator, at least partially provided in the housing, and the waterproof element is connected to the stator; A rotor, at least partially provided in the housing and connected to the stator.

10. The electrically conductive slip ring according to claim 9, wherein The stator includes: A first end cover, provided in the housing, and the waterproof element is connected to the first end cover; A second end cover, having a first part and a second part connected to each other, the first part extends into the housing, and the second part is clamped at the end of the housing; A reinforcing member, connected between the first end cover and the second end cover; Wherein, the rotor is connected between the first end cover and the second end cover.

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