Conductive slip ring

Abstract

The utility model provides a conductive slip ring, and relates to the technical field of electric contact slip connection. The conductive slip ring comprises a stator and a rotor. The base comprises a base and a shaft barrel; the first protective sleeve is connected to the shaft barrel in a sleeving mode and comprises a first groove, and the first groove is located in the side, away from the base, of the first protective sleeve; the second protective sleeve is connected to the shaft barrel in a sleeving mode and comprises a second groove, and the second groove is located in the side, close to the first protective sleeve, of the second protective sleeve; wherein an accommodating cavity is formed between the first groove and the second groove, and the stator and the rotor are arranged in the accommodating cavity and are in sliding conductive connection. According to the technical scheme provided by the utility model, the conduction effect and the anti-interference capability of the conductive slip ring can be effectively improved, the stability of the rotor and the stator in work can be improved through the assembly relationship between the stator and the base and the assembly relationship between the rotor and the stator through the first protective sleeve and the second protective sleeve, the abrasion is reduced, and the service life is prolonged. The service life of the conductive slip ring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical contact sliding connection, in particular to a conductive slip ring. Background Art

[0002] Conductive slip ring is a device used to achieve continuous and stable transmission of electrical energy and electrical signals between two relatively rotating parts. It is widely used in equipment such as robotic arms, robots, winding machines and filling machines.

[0003] At present, the stators and rotors of most conductive slip rings are stacked on an intermediate base. The stators and rotors are prone to misalignment, which affects power supply. In addition, the stators, rotors and external terminals are exposed and easily come into contact with other conductors or impurities, which can cause equipment short circuits and shorten the life of the conductive slip rings. At the same time, since the stators and rotors are stacked on the intermediate base, if process manufacturing errors cause them to shake left and right during operation, reducing their stability during operation, they may cause wear of the stators and rotors, and shorten the service life of the conductive slip rings. Summary of the Invention

[0004] The purpose of the utility model is to overcome the problems in the related art that the rotor and stator of the conductive slip ring are easily misaligned, which affects the conduction effect and is easily affected by external interference, and to provide a conductive slip ring with good conduction effect, good anti-interference ability and stability.

[0005] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present invention.

[0006] According to a first aspect of the present invention, a conductive slip ring is provided, comprising a stator and a rotor; the conductive slip ring further comprises:

[0007] Base, including base and shaft cylinder;

[0008] a first protective sleeve, sleeved on the shaft cylinder, comprising a first groove, wherein the first groove is located on a side of the first protective sleeve facing away from the base;

[0009] a second protective sleeve, sleeved on the shaft cylinder, comprising a second groove, wherein the second groove is located on a side of the second protective sleeve close to the first protective sleeve;

[0010] A receiving cavity is formed between the first groove and the second groove, the stator and the rotor are arranged in the receiving cavity and are connected in a sliding conductive manner, and the stator has an assembly relationship with the base when installed on the base, and the rotor has no assembly relationship with the base when installed on the base, and has an assembly relationship with the stator through the first protective cover and the second protective cover.

[0011] In an exemplary embodiment of the present invention, based on the aforementioned solution, the rotor is embedded in the first groove, and the rotor includes: a rotor ring, which is sleeved on the shaft cylinder and is used for sliding conductive connection with the stator; and a rotor conductive end, which is formed by extending from the side of the rotor ring away from the shaft cylinder.

[0012] In an exemplary embodiment of the present invention, based on the aforementioned scheme, the first groove includes: a protective groove, formed by extending outward from the first groove, and the shape of the protective groove is adapted to the conductive end of the rotor; wherein, when the rotor is embedded in the first groove, the conductive end of the rotor is in the protective groove.

[0013] In an exemplary embodiment of the present invention, based on the above solution, the rotor ring includes:

[0014] At least one conductive protrusion is provided on a side of the rotor ring away from the first groove and abuts against the stator to achieve a sliding conductive connection between the stator and the rotor.

[0015] In an exemplary embodiment of the present invention, based on the aforementioned scheme, the stator is embedded in the second groove, and the stator includes: a stator ring, which is sleeved on the shaft cylinder and is used for sliding conductive connection with the rotor; a stator conductive end, which is formed by extending from a side of the stator ring close to the shaft cylinder, and the extension direction is parallel to the extension direction of the shaft cylinder.

[0016] In an exemplary embodiment of the present invention, based on the aforementioned scheme, the shaft cylinder includes: a limiting groove, which is arranged on the outer side wall of the shaft cylinder, and the extension direction is parallel to the extension direction of the shaft cylinder; wherein, when the stator is embedded in the second groove, the conductive end of the stator is in the limiting groove.

[0017] In an exemplary embodiment of the present invention, based on the aforementioned solution, the first protective sleeve includes: a first limiting wall, arranged on a side of the first groove close to the shaft cylinder; and a second limiting wall, arranged on a side of the first groove away from the shaft cylinder.

[0018] In an exemplary embodiment of the present invention, based on the aforementioned scheme, the second protective sleeve includes: a third limiting wall, which is arranged on the side of the second groove close to the shaft cylinder; and a fourth limiting wall, which is arranged on the side of the second groove away from the shaft cylinder; wherein, when the first protective sleeve and the second protective sleeve are sleeved on the shaft cylinder, the third limiting wall is located on the side of the first limiting wall close to the shaft cylinder and fits with the first limiting wall, and the fourth limiting wall is located on the side of the second limiting wall close to the shaft cylinder and fits with the second limiting wall.

[0019] In an exemplary embodiment of the present invention, based on the above solution, the conductive slip ring further includes:

[0020] A fixed cover is sleeved and fixed on the shaft cylinder and is used to compress the first protective sleeve and the second protective sleeve.

[0021] In an exemplary embodiment of the present invention, based on the aforementioned solution, the fixing cover further includes: an elastic member, one end of which is fixedly connected to a side of the fixing cover close to the second protective sleeve; wherein, when the fixing cover is sleeved and fixed on the shaft cylinder, the elastic member presses the second protective sleeve to make the stator and the rotor abut against each other, thereby realizing a sliding conductive connection.

[0022] It can be seen from the above technical solution that the present invention has at least one of the following advantages and positive effects:

[0023] The conductive slip ring in the present invention includes a stator, a rotor, a base, a first protective cover and a second protective cover, and the first protective cover includes a first groove, the second protective cover includes a second groove, and an accommodating cavity is formed between the first groove and the second groove. The stator and the rotor are arranged in the accommodating cavity and are connected in a sliding conductive manner. When the stator is installed on the base, it has an assembly relationship with the base, and the rotor has an assembly relationship with the stator through the first protective cover and the second protective cover. On the one hand, the stator and the rotor are arranged in the accommodating cavity, which can limit the relative position of the stator and the rotor, reduce the poor contact phenomenon caused by misalignment, and thus improve the conduction effect of the conductive slip ring; on the other hand, the stator and the rotor are arranged in the accommodating cavity, which can not only isolate the stator and the rotor from the outside world, avoid other conductors from contacting the stator or the rotor, and reduce the risk of short circuit, but also avoid dust and other impurities adhering to the surface of the stator or the rotor, thereby improving the conductive performance and service life of the conductive slip ring; on the other hand, the stability of the stator can be ensured by the assembly relationship between the stator and the base, and then the assembly relationship between the rotor and the stator formed by the first protective cover and the second protective cover can effectively improve the stability of the rotor and the stator during operation, further improve the conductive performance and anti-interference ability of the conductive slip ring, and can effectively avoid the problem of wear caused by the rotor and stator shaking left and right during operation due to process errors, reduce the wear rate of the rotor and stator, thereby improving the service life of the conductive slip ring and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0025] Figure 1 It is an exploded view of the conductive slip ring in the embodiment of the present utility model.

[0026] Figure 2 It is a structural diagram of the base in an embodiment of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the rotor and stator in an embodiment of the utility model.

[0028] Figure 4 It is a structural schematic diagram of the first protective cover in an embodiment of the present utility model.

[0029] Figure 5 It is a structural schematic diagram of the second protective cover in an embodiment of the present utility model.

[0030] Figure 6 It is a schematic cross-sectional structure diagram of a conductive slip ring in an embodiment of the utility model.

[0031] The main components in the figure are described as follows:

[0032] 1. Stator; 11. Stator ring; 12. Stator conductive terminal;

[0033] 2. rotor; 21. rotor ring; 22. rotor conductive end; 211. conductive bump;

[0034] 3. Base; 31. Base; 32. Shaft cylinder; 321. Limiting groove;

[0035] 4. First protective cover; 41. First groove; 42. First limiting wall; 43. Second limiting wall; 411. Protective groove;

[0036] 5. Second protective cover; 51. Second groove; 52. Third limiting wall; 53. Fourth limiting wall;

[0037] 6. Fixed cover; 61. Elastic part. DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0039] The features, structures or characteristics described above can be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc. can be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present invention.

[0040] Although relative terms such as "upper" and "lower" are used in this disclosure to describe the relationship of one illustrated component to another, these terms are used in this disclosure for convenience only, such as based on the orientation of the illustrations in the accompanying drawings. It is understood that if the illustrated device is flipped upside down, the component described as "upper" would become the component "lower." Other relative terms such as "high," "lower," "top," "bottom," "front," "back," "left," and "right" have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed on the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0041] In the present invention, the terms "a", "an", "the", "" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0042] As an important component of mechanical equipment such as robotic arms, robots, winding machines, and filling machines, conductive slip rings utilize the mutual cooperation between the rotor and the stator to enable the mechanical equipment to achieve continuous and unobstructed circular motion while ensuring the integrity of the circuit, and always keep the circuit conductive during dynamic rotation.

[0043] In some related technologies, the stator and rotor of the slip ring are simply fixed to a central base, forming a stacked structure. Furthermore, the external terminals lack any protective measures and are completely exposed. This makes it very easy for other conductive objects to come into contact with the terminals, or for conductive debris to fall onto the stator or rotor during operation, causing a short circuit in the entire device. Furthermore, tiny impurities can easily adhere to the surface of the stator or rotor, negatively impacting the performance of the slip ring, reducing its service life, and even causing the device to short out.

[0044] In some related technologies, the stator and rotor are fixed to an intermediate base, and the two and the base cooperate with each other. However, if the stator and rotor are tightly fitted to the base, it is not conducive to the elastic member pressing the two together to form a good conductive environment. If the gap between the stator and rotor and the base is too large, the stator and rotor are prone to varying degrees of misalignment during equipment operation, affecting circuit conduction and signal transmission. At the same time, it may reduce the stability of the stator and rotor during operation, causing wear on the stator and rotor, and shortening the service life of the conductive slip ring.

[0045] In order to solve all or part of the technical problems in the above-mentioned related technologies, an embodiment of the present invention provides a conductive slip ring, which may include a stator 1, a rotor 2, a base 3, a first protective cover 4 and a second protective cover 5, wherein the base 3 includes a base 31 and a shaft cylinder 32; the first protective cover 4 is sleeved on the shaft cylinder 32, including a first groove 41, and the first groove 41 is located on the side of the first protective cover 4 away from the base 31; the second protective cover 5 is sleeved on the shaft cylinder 32, including a second groove 51, and the second groove 51 is located on the side of the second protective cover 5 close to the first protective cover 4; an accommodating cavity is formed between the first groove 41 and the second groove 51, and the stator 1 and the rotor 2 are arranged in the accommodating cavity and are slidably conductively connected.

[0046] In the above-mentioned embodiment, the conductive slip ring forms an accommodating cavity between the first groove 41 and the second groove 51 , and the stator 1 and the rotor 2 are disposed in the accommodating cavity and are connected in a sliding and conductive manner. On the one hand, the stator and the rotor are arranged in the accommodating cavity, which can limit the relative position of the stator and the rotor, reduce the poor contact phenomenon caused by misalignment, and thus improve the conduction effect of the conductive slip ring; on the other hand, the stator and the rotor are arranged in the accommodating cavity, which can not only isolate the stator and the rotor from the outside world, avoid other conductors from contacting the stator or the rotor, and reduce the risk of short circuit, but also avoid dust and other impurities adhering to the surface of the stator or the rotor, thereby improving the conductive performance and service life of the conductive slip ring; on the other hand, the stability of the stator can be ensured by the assembly relationship between the stator and the base, and then the assembly relationship between the rotor and the stator formed by the first protective cover and the second protective cover can effectively improve the stability of the rotor and the stator during operation, further improve the conductive performance and anti-interference ability of the conductive slip ring, and can effectively avoid the problem of wear caused by the rotor and stator shaking left and right during operation due to process errors, reduce the wear rate of the rotor and stator, thereby improving the service life of the conductive slip ring and reducing costs.

[0047] refer to Figure 1 The conductive slip ring in the present invention includes a stator 1, a rotor 2, a base 3, a first protective cover 4 and a second protective cover 5.

[0048] Among them, the stator 1 can be the fixed part of the conductive slip ring, which is usually connected to the fixed structure on the equipment. It and the rotor 2 together constitute the rotating and stationary parts of the conductive slip ring. The two are connected through sliding conductive connection to achieve stable transmission of electrical energy or signals between the rotating part and the fixed part. Optionally, the stator 1 can be made of copper material, aluminum material, or other suitable conductive materials such as silver and iron. The rotor 2 can be the rotatable part of the conductive slip ring, which is slidably connected to the stator 1 to transmit electrical energy or signals. Optionally, the rotor 2 can be made of copper material, aluminum material, or other suitable conductive materials such as silver and iron. In this example embodiment, the stator 1 and the rotor 2 can be ring-shaped, or can be triangular, quadrilateral, hexagonal, or other shapes with a central hole that can be accommodated in the accommodating cavity of the conductive slip ring. Preferably, the stator 1 and the rotor 2 can be concentrically mounted on the base 3, and the contact surfaces of the two are of the same shape. For example, when both the stator 1 and the rotor 2 are annular, the diameters of the annular contact surfaces of the stator 1 and the rotor 2 are the same, thereby increasing the effective contact surface between the two and reducing costs. Unless otherwise specified, the shape of the stator 1 and the rotor 2 is annular below.

[0049] Secondly, the base 3 can be the part of the conductive slip ring used to support or fix the stator 1 and the rotor 2, which can be made of other hard materials such as iron, aluminum alloy, copper-aluminum alloy, plastic, resin, etc. Figure 2 As shown, the base 3 may include a base 31 and a shaft barrel 32. The base 31 may be made of a relatively hard metal material and is used to secure and support the entire conductive slip ring. The base 31 may also be provided with interfaces and mounting holes to facilitate installation of the conductive slip ring into the device and connection with other components. The shaft barrel 32 is the portion of the base 3 that supports the rotor 2 and secures the stator 1. It may be a hollow cylindrical structure. For example, the shaft barrel 32 may be a cylindrical structure, or other suitable structure such as a triangular prism or a quadrangular prism. The shaft barrel 32 ensures that the rotor 2 can stably rotate along the shaft barrel 32 during rotation.

[0050] The first protective cover 4 and the second protective cover 5 can be a structure for providing protection for the stator 1 and the rotor 2. They can enable the stator 1 and the rotor 2 to be connected in a sliding conductive manner within the enclosed space of the accommodating cavity, and limit the relative position of the stator 1 and the rotor 2, thereby reducing the poor contact caused by misalignment and improving the conductive effect of the conductive slip ring. Preferably, the first protective cover 4 and the second protective cover 5 are made of plastic material, which insulates the stator and the rotor from external conductors and further reduces the possibility of short circuits. Of course, in other exemplary embodiments, the first protective cover 4 and the second protective cover 5 can also be made of other suitable materials such as plastic material and resin material.

[0051] A sliding conductive connection is a connection method that can achieve electrical energy or signal transmission using sliding contact technology. It can establish an electrical connection through contact between a conductor and a conductive ring, allowing electrical energy or signals to be transmitted between a rotating component and a fixed component. Furthermore, a sliding conductive connection is formed between the stator 1 and the rotor 2, wherein the sliding conductive connection can be achieved by providing a conductor between the contact surfaces of the rotor 2 and the stator 1, wherein the contact surfaces of the rotor 2 and the stator 1 respectively abut against the two ends of the conductor, and the rotor 2 can achieve electrical connection with the stator 1 through the conductor during rotation; the sliding conductive connection can also be achieved by the rotor 2 and the stator 1 being electrically connected by other suitable means such as brushes or carbon brushes.

[0052] In an exemplary embodiment, the stator 1 may be embedded in the first groove 41, and the rotor 2 may be embedded in the second groove 51, with a sliding conductive connection between the stator 1 and the rotor 2. In an exemplary embodiment, the rotor 2 may be embedded in the first groove 41, and the stator 1 may be embedded in the second groove 51, with a sliding conductive connection between the stator 1 and the rotor 2.

[0053] refer to Figure 1 and Figure 3As shown, the rotor 2 can be embedded in the first groove 41. The rotor 2 can be composed of a rotor ring 21 and a rotor conductive end 22. The rotor ring 21 is sleeved on the shaft cylinder 32 for sliding conductive connection with the stator 1; the rotor conductive end 22 is formed by extending from the side of the rotor ring 21 away from the shaft cylinder 32.

[0054] The rotor ring 21 can be an annular structure and is the main part of the rotor 2, used to support and fix the rotor conductive end 22. Exemplarily, the rotor ring 21 and the rotor conductive end 22 are integrally formed, and both are made of copper, aluminum, or other conductive materials. The rotor conductive end 22 can be a conductive structure extending from one side of the rotor ring 21 for connecting to an external circuit. By extending the rotor conductive end 22 from the side of the rotor ring 21 away from the shaft barrel 32 to form the rotor conductive end 22, a certain gap can be created between the rotor conductive end 22 and the shaft barrel 32, thereby leaving a certain space for wiring and facilitating operation by operators. Exemplarily, the rotor conductive end 22 can be arranged horizontally, that is, the extension direction of the rotor conductive end 22 is perpendicular to the extension direction of the shaft barrel 32; the rotor conductive end 22 can be arranged vertically, that is, the extension direction of the rotor conductive end 22 is parallel to the extension direction of the shaft barrel 32; of course, the extension direction of the rotor conductive end can also be other suitable directions that can provide wiring space for operators.

[0055] In an example embodiment, reference Figure 4 As shown, the first groove 41 may include a protection groove 411, which is formed by extending the first groove 41 outward. The shape of the protection groove 411 is adapted to the rotor conductive end 22; when the rotor 2 is embedded in the first groove 41, the rotor conductive end 22 is in the protection groove 411.

[0056] The protective groove 411 can be used to provide accommodation space to protect the rotor conductive end 22, preventing it from contacting external conductors and reducing the risk of short circuits in the conductive slip ring. Preferably, a certain gap exists between the inner wall of the protective groove 411 and the outer surface of the rotor conductive end 22 to facilitate wiring. The opening direction of the protective groove 411 can be aligned with the opening direction of the first groove 41.

[0057] refer to Figure 3 As shown, the rotor ring 21 includes at least one conductive protrusion 211 , which is arranged on a side of the rotor ring 21 away from the first groove 41 and abuts against the stator 1 to achieve a sliding conductive connection between the stator 1 and the rotor 2 .

[0058] The conductive bumps 211 can be local protrusions or projections with good electrical conductivity relative to the main surface of the rotor ring 21. For example, the conductive bumps 211 can be in other shapes, such as dots, columns, or hemispheres. They can be made of copper, aluminum, silver, or other conductive composite materials. The conductive bumps 211 can be fixedly connected to the rotor ring 21 or integrally formed with the rotor ring 21. When the rotor ring 21 rotates relative to the stator, the conductive bumps 211 maintain contact with the stator surface and slide relative to it, forming a dynamic electrical contact interface, enabling continuous and stable transmission of current or electrical signals between the stator 1 and the rotor 2.

[0059] In an exemplary embodiment, the stator 1 can be embedded in the second groove 51 and consists of a stator ring 11 and a stator conductive terminal 12. The stator ring 11 can be sleeved on the shaft barrel 32 for sliding conductive connection with the rotor; the stator conductive terminal 12 can be formed by extending from the side of the stator ring 11 close to the shaft barrel 32, and the extension direction is parallel to the extension direction of the shaft barrel 32.

[0060] The stator ring 11 can be an annular structure and is the main body of the stator 1, used to support and fix the stator conductive terminal 12. Exemplarily, the stator ring 11 and the stator conductive terminal 12 are integrally formed, and both are made of copper, aluminum, or other conductive materials. The stator conductive terminal 12 can be a conductive structure extending from one side of the stator ring 11 for connecting to an external circuit. By extending the stator conductive terminal 12 from the side of the stator ring 11 close to the shaft cylinder 32 to form the stator conductive terminal 12, the stator conductive terminal 12 can be better fixed to the shaft cylinder 32, thereby making the connection between the stator 1 and the base 3 more stable.

[0061] refer to Figure 2 As shown, the shaft cylinder 32 on the base 3 of the conductive slip ring may include a limiting groove 321, which may be set on the outer wall of the shaft cylinder 32, and the extension direction is parallel to the extension direction of the shaft cylinder 32; when the stator 1 is embedded in the second groove 51, the stator conductive end 12 is in the limiting groove 321.

[0062] By positioning the stator conductive end 12 in the retaining groove 321, the connection between the stator 1 and the base 3 is further strengthened, thereby preventing the stator 1 from shifting due to the forces and torques generated by the rotation of the rotor 2 and stator 1. Furthermore, an extension section can be provided at the end of the stator conductive end 12 away from the stator ring 11. A certain gap exists between the extension section and the shaft barrel 32 to facilitate wiring.

[0063] refer to Figure 4As shown, the first protective sleeve 4 may include a first limiting wall 42 and a second limiting wall 43. The first limiting wall 42 may be provided on the side of the first groove 41 close to the shaft cylinder 32; the second limiting wall 43 may be provided on the side of the first groove 41 away from the shaft cylinder 32. When the rotor 2 is embedded in the first groove 41, the first limiting wall 42 and the second limiting wall 43 may be used to limit the position of the rotor, so that the rotor 2 is less likely to deviate during rotation. For example, one side of the rotor 2 may be in contact with the first limiting wall 42, and the other side may be in contact with the second limiting wall 43, thereby limiting the position of the rotor 2. During operation of the conductive slip ring, the rotor 2 and the first protective sleeve 4 together constitute a rotating assembly, and the two rotate synchronously.

[0064] refer to Figure 5 and Figure 6 As shown, in an exemplary embodiment, the second protective sleeve 5 may include a third limiting wall 52 and a fourth limiting wall 53. The third limiting wall 52 may be disposed on a side of the second groove 51 close to the shaft cylinder 32; the fourth limiting wall 53 may be disposed on a side of the second groove 51 away from the shaft cylinder 32. When the first protective sleeve 4 and the second protective sleeve 5 are sleeved onto the shaft cylinder 32, the third limiting wall 52 is located on a side of the first limiting wall 42 close to the shaft cylinder 32 and is in contact with the first limiting wall 42. The fourth limiting wall 53 is located on a side of the second limiting wall 43 close to the shaft cylinder 32 and is in contact with the second limiting wall 43.

[0065] Among them, by the fit between the third limiting wall 52 and the first limiting wall 42 and the fit between the fourth limiting wall 53 and the second limiting wall 43, a housing cavity for accommodating the rotor 2 and the stator 1 can be formed between the first protective cover 4 and the second protective cover 5. The housing cavity can relatively isolate the rotor 2 and the stator 1 from the external space, thereby preventing other conductors from contacting the stator 1 or the rotor 2, reducing the risk of short circuits, and preventing impurities such as dust from adhering to the surface of the stator 1 or the rotor 2, thereby improving the conductivity and service life of the conductive slip ring. Moreover, the relative position of the stator 1 and the rotor 2 can be restricted, reducing the poor contact caused by misalignment, thereby improving the conductive effect of the conductive slip ring. In addition, the limiting effect of the third limiting wall 52 and the fourth limiting wall 53 can better fix the stator 1 on the base 3, so that the stator 1 does not rotate relative to the base 3 when the rotor 2 rotates.

[0066] The assembly relationship between the rotor and the stator formed by the first protective cover and the second protective cover can effectively improve the stability of the rotor and the stator during operation, further improve the conductivity and anti-interference ability of the conductive slip ring, and effectively avoid the problem of wear caused by the rotor and the stator shaking left and right during operation due to process errors, reduce the wear rate of the rotor and the stator, thereby increasing the service life of the conductive slip ring and reducing costs.

[0067] In an exemplary embodiment, the conductive slip ring may further include a fixing cover 6 , which may be sleeved and fixed on the shaft cylinder 32 to compress the first protective sleeve 4 and the second protective sleeve 5 .

[0068] The fixing cover 6 can be a fixing component mounted on the shaft cylinder 32 and used to compress the first protective sleeve 4 and the second protective sleeve 5 to ensure the stability and sealing of the internal structure of the conductive slip ring. For example, the fixing cover 6 can be a cylindrical or annular structure that can be wrapped around the outer circumference of the shaft cylinder 32. The fixing cover 6 can be sleeved onto the shaft cylinder 32 by a threaded connection. For example, the side wall of the fixing cover 6 has a through hole that extends through the wall thickness of the fixing cover 6, and the side wall of the shaft cylinder 32 has a mounting hole that matches the through hole of the fixing cover 6. When the fixing cover 6 is sleeved onto the shaft cylinder 32 and its through hole is aligned with the mounting hole of the shaft cylinder 32, the fixing cover 6 and the shaft cylinder 32 are initially connected by bolts passing through the two holes. A matching nut is screwed into the threaded end of the bolt, and the nut is tightened to secure the fixing cover 6 and the shaft cylinder 32. The fixing cover 6 can also be sleeved and fixed to the shaft cylinder 32 by means of a snap connection, interference fit, or other methods. This exemplary embodiment does not impose any special restrictions on the connection method between the fixing cover 6 and the shaft cylinder 32. When the fixed cover 6 is sleeved onto the shaft cylinder 32, it applies a certain radial pressure to the first protective cover 4 and the second protective cover 5 sleeved on the shaft cylinder 32, so that the two protective covers fit tightly together and prevent them from shifting due to factors such as vibration during operation, thereby ensuring a stable working environment and sealing for the rotor 2 and stator 1. In addition, the tightening effect of the fixed cover 6 ensures that the rotor 2 and stator 1 are tightly matched, preventing the rotor 2 from being unable to achieve a sliding conductive connection with the stator 1 during rotation. Optionally, the fixed cover 6 can be made of metal, plastic, resin, or other suitable materials.

[0069] refer to Figure 1 As shown, the fixed cover 6 can also include an elastic member 61, one end of which can be fixedly connected to the side of the fixed cover 6 close to the second protective cover 5; when the fixed cover 6 is sleeved and fixed on the shaft tube 32, the elastic member 61 presses the second protective cover 5 to make the stator 1 and the rotor 2 abut against each other, thereby realizing a sliding conductive connection.

[0070] The elastic member 61 can be a material component that can deform under the action of an external force and return to its original shape after the external force is removed. It can be used to ensure a stable sliding conductive connection between the stator and the rotor. Optionally, one end of the elastic member 61 can be firmly connected to the fixed cover 6 by welding, bonding, embedded fixation, or other suitable means to ensure that it will not detach during operation. When the fixed cover 6 is sleeved and fixed on the shaft cylinder 32, the elastic member 61 presses the second protective cover 5. That is, the elastic member 61 exerts a continuous force on the second protective cover 5 under the action of its own elastic potential energy, forcing the second protective cover 5 and the stator 1 connected thereto to move toward the rotor 2 or maintain a certain contact pressure, so that the stator 1 and the rotor 2 always maintain close and stable contact during the relative motion, ensuring current or signal conduction between the two. Exemplarily, the elastic member 61 can be a spring, a rubber dome, or other suitable material with elastic properties. This exemplary embodiment does not specifically limit the specific form of the elastic member 61.

[0071] In an exemplary embodiment, a conductive slip ring may be provided with multiple sets of stators and rotors, each stator having a corresponding rotor. A corresponding protective sleeve may also be provided for each set of stators and rotors. The protective sleeve is sleeved onto the shaft barrel 32 of the base 3 and is provided with a groove. The rotor and stator can be embedded in the groove provided in their corresponding protective sleeves. A receiving cavity is formed between the protective sleeves, and each set of stators and rotors can be provided in its corresponding receiving cavity and connected in a sliding conductive manner. In addition, an insulating spacer may be provided between each set of adjacent protective sleeves to provide electrical isolation and prevent mutual interference or short circuits between the electrical circuits of different sets of stators and rotors. Optionally, the insulating spacer may be made of an insulating material such as plastic, ceramic, or mica.

[0072] The conductive slip rings in the present invention can be applied to rotating joints on other mechanical equipment such as robotic arms, robots, winding machines, and filling machines to achieve complex motion, control, and other functions. For example, when the conductive slip rings are applied to a robotic arm, the stator 1 can be set on the fixed part of the robotic arm, that is, the part that remains stationary relative to the rotating part, and the rotor 2 can be set on the rotating part of the robotic arm, that is, the part that needs to move or rotate continuously. The stator 1 and the rotor 2 are mounted on the base 3 on the robotic arm, and the stator 1 and the rotor 2 can be set in a receiving cavity formed by a protective cover and connected in a sliding conductive manner. The stator 1 can be connected to an external circuit through the stator conductive end 12, and the rotor 2 can be connected to an external circuit through the rotor conductive end 22.

[0073] It should be understood that the present invention does not limit its application to the detailed structure and arrangement of the components proposed in the present invention. The present invention is capable of other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or the accompanying drawings. All of these different combinations constitute multiple alternative aspects of the present invention. The embodiments of the present invention illustrate the best known ways to implement the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A conductive slip ring, comprising a stator and a rotor, characterized in that: Base, including base and shaft cylinder; a first protective sleeve, sleeved on the shaft cylinder, comprising a first groove, wherein the first groove is located on a side of the first protective sleeve facing away from the base; a second protective sleeve, sleeved on the shaft cylinder, comprising a second groove, wherein the second groove is located on a side of the second protective sleeve close to the first protective sleeve; A receiving cavity is formed between the first groove and the second groove, the stator and the rotor are arranged in the receiving cavity and are connected in a sliding conductive manner, and the stator has an assembly relationship with the base when installed on the base, and the rotor has no assembly relationship with the base when installed on the base, and has an assembly relationship with the stator through the first protective cover and the second protective cover.

2. The conductive slip ring according to claim 1, characterized in that: The rotor is embedded in the first groove, and the rotor includes: A rotor ring is sleeved on the shaft cylinder and is used for sliding conductive connection with the stator; The rotor conductive end is formed by extending from a side of the rotor ring away from the shaft cylinder.

3. The conductive slip ring according to claim 2, characterized in that: The first groove comprises: a protection groove, formed by extending outward from the first groove, the shape of the protection groove being adapted to the conductive end of the rotor; When the rotor is embedded in the first groove, the conductive end of the rotor is located in the protective groove.

4. The conductive slip ring according to claim 2, characterized in that: The rotor ring comprises: At least one conductive protrusion is provided on a side of the rotor ring away from the first groove and abuts against the stator to achieve a sliding conductive connection between the stator and the rotor.

5. The conductive slip ring according to claim 1, wherein: The stator is embedded in the second groove, and the stator includes: A stator ring is sleeved on the shaft cylinder and is used for sliding conductive connection with the rotor; The stator conductive end is formed by extending from one side of the stator ring close to the shaft cylinder, and the extending direction is parallel to the extending direction of the shaft cylinder.

6. The conductive slip ring according to claim 5, characterized in that: The shaft cylinder comprises: A limiting groove is provided on the outer side wall of the shaft cylinder, and its extension direction is parallel to the extension direction of the shaft cylinder; When the stator is embedded in the second groove and sleeved on the shaft cylinder, the conductive end of the stator is embedded in the limiting groove, so that the stator and the base have an assembly relationship.

7. The conductive slip ring according to claim 1, characterized in that: The first protective cover comprises: a first limiting wall, disposed on a side of the first groove close to the shaft cylinder; The second limiting wall is arranged on a side of the first groove away from the shaft cylinder.

8. The conductive slip ring according to claim 7, characterized in that: The second protective cover comprises: a third limiting wall, provided on a side of the second groove close to the shaft cylinder; a fourth limiting wall, provided on a side of the second groove away from the shaft cylinder; Wherein, when the first protective sleeve and the second protective sleeve are sleeved on the shaft cylinder, the third limiting wall is located on the side of the first limiting wall close to the shaft cylinder and is in contact with the first limiting wall, and the fourth limiting wall is located on the side of the second limiting wall close to the shaft cylinder and is in contact with the second limiting wall, so that when the rotor is installed on the base, it has no assembly relationship with the base, and has an assembly relationship with the stator through the first protective sleeve and the second protective sleeve.

9. The conductive slip ring according to claim 1, wherein: The conductive slip ring further comprises: A fixed cover is sleeved and fixed on the shaft cylinder and is used to compress the first protective sleeve and the second protective sleeve.

10. The conductive slip ring according to claim 9, characterized in that: The fixed cover also includes: an elastic member, one end of which is fixedly connected to a side of the fixing cover close to the second protective cover; When the fixing cover is sleeved and fixed on the shaft cylinder, the elastic member presses the second protective cover to make the stator and the rotor abut against each other, thereby achieving a sliding conductive connection.

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