A forceable liquid conductive slip ring

Abstract

The application provides a liquid conductive slip ring which can bear force, belongs to the technical field of conductive slip rings, and comprises a shell, a rotor shaft and a stator shaft. The rotor shaft is rotatably arranged at one end of the shell through a bearing, and the stator shaft is fixed at the other end of the shell. The end of the rotor shaft extending into the shell is provided with a rotor insulating sleeve, and the end of the stator shaft extending into the shell is provided with a stator insulating sleeve. A sealed cavity is formed between the rotor insulating sleeve and the stator insulating sleeve, and the sealed cavity is filled with a liquid conductive medium so that the rotor shaft and the stator shaft are electrically connected. The other end of the rotor shaft extending out of the shell is provided with a connecting groove, and the connecting groove is connected with a power source through a transmission component to provide power for the liquid conductive slip ring. In the utility model, the liquid conductive slip ring can be connected with an external power source through the connecting groove while realizing electrical connection, directly bear and transmit external mechanical force, and thus the problem that the existing slip ring cannot bear external force is solved.

Description

Technical Field

[0001] This utility model relates to the field of conductive slip ring technology, and specifically to a liquid conductive slip ring that can withstand force. Background Technology

[0002] Liquid conductive slip rings, as important electrical connection devices, are widely used in applications requiring continuous 360-degree rotation for transmitting electrical signals and power. However, existing liquid conductive slip rings on the market typically cannot withstand large external mechanical forces for extended periods during operation and usually require connection via flexible cables. This is mainly because the mechanical structural strength and connection methods of traditional liquid conductive slip rings are often insufficient to cope with continuous external loads, leading to problems such as structural deformation, seal failure, and even leakage of the internal conductive medium when subjected to external forces. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a liquid conductive slip ring that can withstand force.

[0004] The technical solution adopted by this utility model is as follows: This application provides a liquid conductive slip ring that can withstand force, including a housing, a rotor shaft, and a stator shaft. The rotor shaft is rotatably mounted on one end of the housing via a bearing, and the stator shaft is fixed to the other end of the housing. A rotor insulating sleeve is provided at one end of the rotor shaft extending into the housing, and a stator insulating sleeve is provided at one end of the stator shaft extending into the housing. A sealed cavity is formed between the rotor insulating sleeve and the stator insulating sleeve. The sealed cavity is filled with a liquid conductive medium to form an electrical connection between the rotor shaft and the stator shaft. A connecting groove is provided at the other end of the rotor shaft extending out of the housing. The connecting groove is used to connect to a power source through a transmission component to provide power to the liquid conductive slip ring.

[0005] In some embodiments, a disc portion is formed on one end of the rotor shaft that extends out of the housing, and the connecting groove is provided on the circumferential outer wall of the disc portion.

[0006] In some embodiments, the connecting groove is a V-shaped groove, a U-shaped groove, a trapezoidal groove, a gear-shaped groove, or a pulley-shaped groove.

[0007] In some embodiments, the rotor shaft is rotatably mounted on the housing via two bearings or a double-row ball bearing.

[0008] In some embodiments, the outer ring of the rotor shaft near the stator shaft is provided with a first conical surface, and the outer ring of the stator shaft near the rotor shaft is provided with a second conical surface.

[0009] In some embodiments, the rotor insulating sleeve has an annular groove at one end facing the stator shaft, the end of the stator insulating sleeve extends into the annular groove, and a sealing gasket and elastic cotton are abutted between the annular groove and the annular groove, with the elastic cotton abutting between the annular groove and the sealing gasket.

[0010] In some embodiments, the stator insulating sleeve has a groove at one end facing the rotor shaft, one end of the rotor shaft extends into the groove, one end of the stator shaft extends into the groove, and a gap is provided between the ends of the two.

[0011] In some embodiments, the rotor shaft includes a first shaft body, a second shaft body, and a third shaft body with sequentially increasing outer diameters. The rotor insulating sleeve is disposed on the third shaft body, the second shaft body is provided with a fixing sleeve, and the third shaft body is located in a groove.

[0012] In some embodiments, the rotor shaft further includes a fourth shaft and a fifth shaft with successively increasing outer diameters. The outer diameter of the fourth shaft is larger than that of the third shaft. A first step is formed at the end of the fourth shaft near the third shaft. The rotor insulating sleeve is positioned between the fixed sleeve and the first step. A second step is formed at the end of the fifth shaft near the fourth shaft. A third step is provided on the rotor insulating sleeve. The inner ring of the bearing is positioned between the second step and the third step.

[0013] In some embodiments, a mounting groove is provided on one end of the housing near the rotor shaft, and a tapering structure is provided on the side wall of the mounting groove to fix the bearing in the mounting groove. A seal is provided between the bearing and the bottom wall of the mounting groove, and the inner ring of the seal is inclined toward the stator shaft and abuts against the outer peripheral wall of the rotor insulating sleeve.

[0014] The beneficial effects of this utility model are as follows: This utility model enables the liquid conductive slip ring to achieve electrical connection while also connecting to an external power source through the connecting groove, directly bearing and transmitting external mechanical force, thereby solving the problem that existing slip rings cannot withstand external forces, and improving the structural compactness, installation convenience, flexibility and reliability of the equipment in specific application scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a schematic diagram of a liquid conductive slip ring that can withstand force according to this utility model; Figure 2 This is a partial schematic diagram of a liquid conductive slip ring capable of withstanding force according to this utility model. Figure 1 ; Figure 3 This is a partial schematic diagram of a liquid conductive slip ring capable of withstanding force according to this utility model. Figure 2 ; Figure 4 This is a partial schematic diagram of a liquid conductive slip ring capable of withstanding force according to this utility model. Figure 3 . Detailed Implementation

[0017] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0019] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0020] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0021] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of this application.

[0022] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0024] Traditional liquid conductive slip rings, in most cases, cannot withstand externally applied forces for extended periods during operation and rely solely on a flexible cable for signal or power transmission. This connection method often leads to system instability, reduced transmission efficiency, and even connection failure due to the limitations of the flexible cable when operating under significant mechanical stress or in dynamic environments, thus affecting the normal operation and lifespan of the equipment.

[0025] like Figures 1 to 4 As shown, this application provides a liquid conductive slip ring capable of bearing force, including a housing 1, a rotor shaft 2, and a stator shaft 3. The rotor shaft 2 is rotatably mounted on one end of the housing 1 via a bearing 4, and the stator shaft 3 is fixed to the other end of the housing 1. A rotor insulating sleeve 5 is provided at the end of the rotor shaft 2 extending into the housing 1, and a stator insulating sleeve 6 is provided at the end of the stator shaft 3 extending into the housing 1. A sealed cavity 7 is formed between the rotor insulating sleeve 5 and the stator insulating sleeve 6. The sealed cavity 7 is filled with a liquid conductive medium, enabling an electrical connection between the rotor shaft 2 and the stator shaft 3. The other end of the rotor shaft 2 extending out of the housing 1 is provided with a connecting groove 8, which is used to connect to a power source via a transmission component to provide power to the liquid conductive slip ring. The transmission component can be a belt, chain, or gear, etc.

[0026] Optionally, the connecting groove 8 can be a V-shaped groove, a U-shaped groove, a trapezoidal groove, a gear shape, or a pulley shape, depending on the type of transmission component being connected and the required transmission efficiency. For example, if belt drive is required, the connecting groove 8 can be designed as a V-shaped groove or a U-shaped groove; if gear drive is required, the connection can be designed as a gear; if synchronous belt drive is required, the connection can be designed as a synchronous pulley. This design allows the liquid conductive slip ring to not only transmit electrical energy and signals but also serve as part of a mechanical transmission chain, bearing and transmitting torque, thereby achieving the integration of electrical signal transmission and mechanical power transmission.

[0027] This configuration enables the liquid conductive slip ring to not only achieve stable transmission of electrical signals or electricity, but also to connect to an external power source through the connecting groove 8, thereby bearing and transmitting mechanical forces, greatly expanding its application range and reliability.

[0028] Among them, the rotor shaft 2 and stator shaft 3 are the core components for realizing electrical connection. They are usually made of metal materials with good electrical conductivity, such as copper or copper alloys, to ensure efficient current transmission.

[0029] The liquid conductive medium mainly refers to liquid metals such as liquid mercury and liquid gallium alloy. This liquid conductive medium enables a stable electrical connection between the rotor shaft 2 and the stator shaft 3, while allowing the rotor shaft 2 to rotate freely.

[0030] Furthermore, a disc portion 200 is formed by protruding from one end of the rotor shaft 2 extending from the outer casing 1, and the connecting groove 8 is disposed on the circumferential outer wall of the disc portion 200. This makes the placement of the connecting groove 8 more reasonable, thereby effectively improving transmission efficiency and optimizing the compactness of the overall structure. Specifically, the disc portion 200 provides a larger radial dimension for the connecting groove 8, allowing it to be designed to be deeper or wider, thereby increasing the contact area with the transmission components and improving the transmission torque transmission capability. At the same time, placing the connecting groove 8 on the circumferential outer wall of the disc portion 200 allows the transmission components to directly mesh or frictionally drive with the disc portion 200, reducing additional connecting structures, thus making the entire liquid conductive slip ring structure more compact and reducing the overall size and weight.

[0031] In some embodiments, the rotor shaft 2 is rotatably mounted on the housing 1 via two bearings 4 or a double-row ball bearing 4. The bearings 4 are key components supporting the rotation of the rotor shaft 2, their main function being to reduce rotational friction and bear the radial and axial loads of the rotor shaft 2. Specifically, arranging two bearings 4 side-by-side can distribute the load on the rotor shaft 2, improving the overall load-bearing capacity and stability. As an alternative, the double-row ball bearing 4 has two rows of balls inside, which, compared to a traditional single-row ball bearing, can withstand greater loads and torques, and has higher rigidity and precision.

[0032] In some embodiments, the outer ring of the rotor shaft 2 near the stator shaft 3 is provided with a first conical surface 20, and the outer ring of the stator shaft 3 near the rotor shaft 2 is provided with a second conical surface 30. Because the conical surface structure has the characteristic of guiding fluid flow, it can effectively reduce turbulence and bubble generation of the liquid conductive medium during flow, thereby improving the stability and reliability of the electrical connection. Furthermore, the conical surface structure can also increase the contact area between the rotor shaft 2 and the stator shaft 3, thereby improving the conductivity of the electrical connection.

[0033] The first conical surface 20 and the second conical surface 30 refer to inclined surfaces provided at the ends of the rotor shaft 2 and the stator shaft 3, and their inclination angles can be adjusted according to actual needs. Specifically, the first conical surface 20 and the second conical surface 30 can adopt the same inclination angle or different inclination angles. As a preferred embodiment, the inclination angle of the first conical surface 20 and the second conical surface 30 can be set to 30°-45° to better guide the flow of the liquid conductive medium.

[0034] In some embodiments, an annular groove 50 is provided at one end of the rotor insulating sleeve 5 facing the stator shaft 3. The end of the stator insulating sleeve 6 extends into the annular groove 50, and a sealing gasket 9 and elastic cotton 10 abut against each other. The elastic cotton 10 abuts between the annular groove 50 and the sealing gasket 9. The annular groove 50 is an annular recessed structure located at the end of the rotor insulating sleeve 5 and surrounding the rotor shaft 2. Its main function is to provide installation space and positioning for the end of the stator insulating sleeve 6, the sealing gasket 9, and the elastic cotton 10. The sealing gasket 9 can be made of common sealing ring materials such as nylon, polyoxymethylene, polytetrafluoroethylene, or rubber, serving as the first layer of sealing to prevent direct leakage of liquid conductive media. The elastic cotton 10 is a material with good elasticity and liquid absorption, such as EVA foam. Its function is to absorb a small amount of leaked liquid conductive media and use its own expansion to compress the sealing gasket 9, further improving the sealing effect.

[0035] To further optimize the performance of the liquid conductive slip ring, a groove 60 is provided at one end of the stator insulating sleeve 6 facing the rotor shaft 2. One end of the rotor shaft 2 extends into the groove 60, and one end of the stator shaft 3 extends into the groove 60, with a gap between the ends of the two. The main function of the groove 60 is to form a receiving space, allowing the end of the rotor shaft 2 to rotate freely within it. This arrangement can improve the sealing performance and stability of the liquid conductive slip ring.

[0036] In some embodiments, the rotor shaft 2 includes a first shaft body 21, a second shaft body 22, a third shaft body 23, a fourth shaft body 24, and a fifth shaft body 25 with sequentially increasing outer diameters, all integrally formed. The rotor insulating sleeve 5 is disposed on the third shaft body 23. The second shaft body 22 is provided with a fixing sleeve 11. The third shaft body 23 is located within a groove 60. The outer diameter of the fourth shaft body 24 is larger than that of the third shaft body 23. A first step portion 26 is formed at one end of the fourth shaft body 24 near the third shaft body 23. The rotor insulating sleeve 5 is positioned between the fixing sleeve 11 and the first step portion 26. A second step portion 27 is formed at one end of the fifth shaft body 25 near the fourth shaft body 24. A third step portion 51 is provided on the rotor insulating sleeve 5. The inner ring of the bearing 4 is positioned between the second step portion 27 and the third step portion 51. This configuration effectively improves the fixing reliability of the rotor insulating sleeve 5 and the bearing 4, enhances the impact and vibration resistance of the liquid conductive slip ring, and extends its service life. Compared with existing technologies, the solution proposed in this application is not only simple in structure and easy to manufacture and assemble, but also significantly improves the performance and reliability of liquid conductive slip rings, meeting the usage requirements under various harsh working conditions.

[0037] In some embodiments, a mounting groove 100 is provided at one end of the outer casing 1 near the rotor shaft 2. A tapering structure 101 is provided on the side wall of the mounting groove 100 to fix the bearing 4 within the mounting groove 100. This tapering structure 101 can be formed by partially deforming the outer casing 1, for example, by stamping or extruding to shrink the side wall of the mounting groove 100 inwards, forming a tapering with a diameter slightly smaller than the outer diameter of the bearing 4, thereby fixing the bearing 4 within the mounting groove 100. A sealing element 12 is provided between the bearing 4 and the bottom wall of the mounting groove. The inner ring of the sealing element 12 is inclined towards the stator shaft 3 and abuts against the outer peripheral wall of the rotor insulating sleeve 5.

[0038] This design effectively secures the bearing 4, improving the stability and reliability of the liquid conductive slip ring. Meanwhile, the inclined seal 12 design better adapts to the rotation of the rotor shaft 2, ensuring a sealing effect and reducing the risk of leakage of the liquid conductive medium.

[0039] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0040] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0041] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A force-carrying liquid conductive slip ring, comprising a housing, a rotor shaft and a stator shaft, the rotor shaft is rotatably arranged at one end of the housing through a bearing, the stator shaft is fixed at the other end of the housing, the end of the rotor shaft extending into the housing is provided with a rotor insulating sleeve, the end of the stator shaft extending into the housing is provided with a stator insulating sleeve, a sealed cavity is formed between the rotor insulating sleeve and the stator insulating sleeve, and the sealed cavity is filled with a liquid conductive medium so that the rotor shaft and the stator shaft are electrically connected, characterized in that, The other end of the rotor shaft protruding out of the shell is provided with a connecting groove for connecting with a power source through a transmission part to provide power for a liquid conductive slip ring.

2. A forceable liquid conductive slip ring as claimed in claim 1, wherein, A disc part is formed on the end of the rotor shaft protruding out of the shell, and the connecting groove is arranged on the circumferential outer wall of the disc part.

3. A forceable liquid conductive slip ring as claimed in claim 1, wherein, The connecting groove is a V-shaped groove, a U-shaped groove, a trapezoidal groove, a gear shape or a belt wheel shape.

4. A forceable liquid conductive slip ring as claimed in claim 1, wherein, The rotor shaft is rotatably arranged in the shell through two bearings or double-row ball bearings.

5. A forceable liquid conductive slip ring as claimed in claim 1, wherein, A first taper surface is arranged on the end part outer ring of the rotor shaft close to the stator shaft, and a second taper surface is arranged on the end part outer ring of the stator shaft close to the rotor shaft.

6. A forceable liquid conductive slip ring as claimed in claim 1, wherein, An annular groove is arranged on the end of the rotor insulation sleeve close to the stator shaft, the end of the stator insulation sleeve protrudes into the annular groove, and a sealing gasket and elastic cotton are abutted between the annular groove and the sealing gasket, and the elastic cotton is abutted between the annular groove and the sealing gasket.

7. A forceable liquid conductive slip ring as claimed in claim 6, wherein, A groove is arranged on the end of the stator insulation sleeve close to the rotor shaft, and the end of the rotor shaft protrudes into the groove, and the end of the stator shaft protrudes into the groove, and a gap is arranged between the two end parts.

8. A forceable liquid conductive slip ring as claimed in claim 7, wherein, The rotor shaft comprises a first shaft body, a second shaft body and a third shaft body with increasing outer diameters in sequence, the rotor insulation sleeve is arranged on the third shaft body, the second shaft body is provided with a fixing sleeve, and the third shaft body is located in the groove.

9. A forceable liquid conductive slip ring as claimed in claim 8, wherein, The rotor shaft further comprises a fourth shaft body and a fifth shaft body with increasing outer diameters in sequence, the outer diameter of the fourth shaft body is larger than that of the third shaft body, a first step part is formed on the end of the fourth shaft body close to the third shaft body, the rotor insulation sleeve is limited between the fixing sleeve and the first step part, a second step part is formed on the end of the fifth shaft body close to the fourth shaft body, a third step part is arranged on the rotor insulation sleeve, and the inner ring of the bearing is limited between the second step part and the third step part.

10. A forceable liquid conductive slip ring as claimed in claim 1, wherein, An installation groove is arranged on the end of the shell close to the rotor shaft, a closing structure is arranged on the side wall of the installation groove to fix the bearing in the installation groove, a sealing element is arranged between the bearing and the bottom wall of the installation groove, the inner ring of the sealing element is inclined towards the direction of the stator shaft, and abuts against the outer circumferential wall of the rotor insulation sleeve.

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