Conductive slip ring brush and conductive slip ring

Abstract

The present application relates to the field of rotating current collector, distributor or continuation of the slip ring, and particularly relates to a conductive slip ring brush and a conductive slip ring. A conductive slip ring comprises a static conductive part and a rotating conductive part, and more than two conductive slip ring brushes are fixedly installed on the static conductive part or the rotating conductive part, the conductive slip ring brush is used for being installed on one of the rotating conductive part and the static conductive part and realizing the conduction of the two, the conductive slip ring brush comprises a cylindrical main body, a conductive contact is slidingly installed in the cylindrical main body, one end of the conductive contact extends out of the cylindrical main body to form a sliding contact end for contacting the corresponding conductive part, a conductive piece is arranged at the other end of the cylindrical main body, and an elastic piece is further arranged in the cylindrical main body to keep the sliding contact end extending out of the cylindrical main body, so that the problem of low current level of the existing conductive slip ring when applied to the condition of requiring radial size is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rotary current collector, distributor or continuation of the slip ring, in particular to a conductive slip ring brush and a conductive slip ring. BACKGROUND

[0002] The conductive slip ring belongs to the application category of electric contact sliding connection, is most widely used in the rotating system of engineering machinery, is also called conductive ring or busbar, and is a power transmission device for realizing image, data signal and power transmission of two relative rotating mechanisms. The conductive slip ring can realize infinite continuous rotation, and can transmit power or data from a fixed position to a rotating position. In addition to engineering machinery, the conductive slip ring is also widely used in radars, wind power and robots. The key point of the design of the conductive slip ring is the design of the brush, and the commonly used structural forms mainly include brushes, brush wires and rolling rings. The brush structure usually adopts piston type brush, wire type brush and sheet type brush, and the current carrying capacity is generally poor, and the conduction current is usually hundreds of amperes.

[0003] With the rapid development of large engineering machinery towards multi-purpose and high-power application, the requirements for power transmission stability and current amplitude are increasing. At present, multiple large cables are usually used for current conduction. However, when multiple large cables are used for conduction, the cables and the corresponding equipment rotate together, the movement resistance of the cables increases the load of the movement mechanism, and the movement range is also affected.

[0004] A conductive slip ring for lightning protection is disclosed in Chinese Utility Model Patent No. CN210692980U, which comprises a fixed disc, a movable disc, a stator disc, a bearing seat, a center shaft, a rotor disc, a spring piece group, an upper bearing and a lower bearing. The fixed disc, the stator disc, the upper bearing, the lower bearing, the bearing seat and the outer ring are assembled integrally to form a stator part. The movable disc, the rotor disc, the center shaft, the inner ring, the upper bearing and the lower bearing are assembled integrally to form a rotor part. The fixed disc and the movable disc are opposite to each other and have a gap. The spring piece group is composed of a spring piece and a contact block. The spring piece is fixed to the bottom of the fixed disc by a screw passing through the screw hole in the middle of the spring piece. The contact blocks at the left and right ends of the spring piece can slide in contact with the movable disc below. The brush of the conductive slip ring in the technical solution of the patent is a spring piece group. The spring piece group is used as the brush, and the spring piece group contacts the movable disc through the contact block, so the contact area is large, and the current carrying effect is improved compared with the traditional conductive slip ring. However, when the spring piece group is used as the brush, a large radial space is required. When the conductive slip ring of the patent is applied to the case where the radial size is required, the current carrying level of the patent will not be too high. SUMMARY

[0005] The present application aims to provide a conductive slip ring brush to solve the problem of low current flow level of the conductive slip ring when applied to the case where the radial size is required due to the excessively large radial size of the brush of the conductive slip ring in the prior art.

[0006] A conductive slip ring brush for mounting on one of a rotating conductive part and a stationary conductive part and realizing the conduction of the two, comprising a cylindrical body, a conductive contact being slidingly mounted in the cylindrical body, the conductive contact extending out of the cylindrical body at one end to form a sliding contact end corresponding to the contact with the conductive part, the other end of the cylindrical body being provided with a conductive part, and the cylindrical body being further provided with an elastic part for keeping the sliding contact end extending out of the cylindrical body.

[0007] Further, a guide sliding platform is provided on the conductive contact and matched with the inner hole of the cylindrical body, and the conductive contact is slidingly mounted in the cylindrical body through the cooperation of the guide sliding platform and the inner wall of the cylindrical body.

[0008] Further, the conductive slip ring brush further comprises an end cover for closing the cylindrical body, the end cover being fixed with the cylindrical body, a through hole being formed on the end cover for the conductive contact to extend out, the hole of the through hole being matched with the stop of the guide sliding platform, and the elastic part being a pre-tightening compression spring sleeved on the conductive contact and abutting against the side of the guide sliding platform close to the conductive part.

[0009] Further, the cylindrical body comprises a first cylinder segment and a second cylinder segment, the second cylinder segment being a barrel-shaped structure with one end being open, the barrel opening being fixed with the end cover, the barrel bottom being provided with a through hole for the conductive contact to extend into the first cylinder segment, the other end of the pre-tightening compression spring abutting against the barrel bottom of the second cylinder segment, and the conductive part being mounted in the first cylinder segment and connected with the conductive contact through a flexible electrical connecting part.

[0010] Further, the conductive contact comprises a conductive rod and a conductive sliding block, the conductive rod extending out of the second cylinder segment and being detachably connected with the conductive sliding block, and the conductive sliding block being connected with the conductive part through the flexible electrical connecting part.

[0011] Further, the conductive sliding block and the conductive rod are connected through threads, and the guide sliding platform is rotationally matched with the cylindrical body.

[0012] Further, the conductive part comprises a conductive closing block and an upper pressing block, and the conductive sliding block comprises a sliding block and a lower pressing block, the upper pressing block pressing the flexible electrical connecting part against the conductive closing block, and / or the lower pressing block pressing the flexible electrical connecting part against the sliding block.

[0013] Further, one of the first cylinder segment and the second cylinder segment is provided with a female stopper, and the other is provided with a male stopper, and the two are connected through the cooperation of the female stopper and the male stopper, and the first cylinder segment and the second cylinder segment are provided with bolt through holes penetrating through the corresponding cylinder segment in the axial direction, and the bolts are inserted into the bolt through holes to connect the first cylinder segment and the second cylinder segment.

[0014] The present application improves the prior art, specifically: the present application provides a corresponding cylindrical body, a corresponding conductive contact is arranged in the cylindrical body, the conductive contact is contacted with the corresponding conductive part to realize the electrical connection of the two, and in order to ensure the stability of the electrical connection, a corresponding elastic member is further arranged in the cylindrical body to exert an elastic force on the conductive contact to make the conductive contact protrude out of the cylindrical body. The other end of the cylindrical body is provided with a conductive member for contacting the corresponding conductive part, and the conductive member is connected with the conductive contact through a flexible electrical connection member to form a complete path. The radial size of the conductive slip ring brush provided by the present application is only the diameter of the cylindrical body, and the radial space is relatively small. Moreover, the conductive slip ring brush provided by the present application uses a conductive contact for conduction, and the contact area with the corresponding conductive part is relatively large, and the current-carrying capacity is also relatively large. In summary, when the radial size of the conductive slip ring is constant, more conductive slip ring brushes provided by the present application can be installed, and the conductive slip ring brush provided by the present application solves the problem that the radial size of the brush of the conductive slip ring in the prior art is too large, resulting in a low current-carrying level when the conductive slip ring is applied to a situation requiring a radial size.

[0015] A conductive slip ring includes a stationary conductive part and a rotating conductive part, and two or more conductive slip ring brushes are fixedly installed on the stationary conductive part or the rotating conductive part, and the conductive slip ring brushes are used to be installed on one of the rotating conductive part and the stationary conductive part to realize the conduction of the two, and the conductive slip ring brush includes a cylindrical body, a conductive contact is slidingly installed in the cylindrical body, one end of the conductive contact protrudes out of the cylindrical body to form a sliding contact end for contacting the corresponding conductive part, the other end of the cylindrical body is provided with a conductive member, and an elastic member is further arranged in the cylindrical body to keep the sliding contact end protruding out of the cylindrical body.

[0016] Further, a guide sliding table matched with the inner hole of the cylindrical body is arranged on the conductive contact, and the conductive contact is slidingly installed in the cylindrical body through the cooperation of the guide sliding table and the inner wall of the cylindrical body.

[0017] Further, the conductive slip ring brush further includes an end cover for closing the cylindrical body, the end cover is fixed with the cylindrical body, a through hole is formed in the end cover for the conductive contact to protrude out, the hole of the through hole is in abutting cooperation with the guide sliding table, the elastic member is a pre-tightening compression spring sleeved on the conductive contact, and the pre-tightening compression spring is abutted against one side of the guide sliding table close to the conductive member.

[0018] Further, the cylindrical body comprises a first cylinder segment and a second cylinder segment, the second cylinder segment is a barrel-shaped structure with one end open, the barrel mouth is fixed with an end cover, the barrel bottom is provided with a through hole for the conductive contact to extend into the first cylinder segment, the other end of the pre-tightened compression spring abuts against the barrel bottom of the second cylinder segment, the conductive part is installed in the first cylinder segment and connected with the conductive contact through the flexible electric connecting piece.

[0019] Further, the conductive contact comprises a conductive rod and a conductive slider, the conductive rod extends out of the second cylinder segment and is detachably connected with the conductive slider, the conductive slider is connected with the conductive part through the flexible electric connecting piece.

[0020] Further, the conductive slider is connected with the conductive rod through threads, the guide sliding table is rotationally matched with the cylindrical body.

[0021] Further, the conductive part comprises a conductive closed block and an upper pressing block, the conductive slider comprises a sliding block and a lower pressing block, the upper pressing block presses the flexible electric connecting piece against the conductive closed block and / or the lower pressing block presses the flexible electric connecting piece against the sliding block.

[0022] Further, one of the first cylinder segment and the second cylinder segment is provided with a female stopper, the other is provided with a male stopper, the two are connected through the cooperation of the female stopper and the male stopper, the first cylinder segment and the second cylinder segment are provided with bolt through holes penetrating through the corresponding cylinder segment in the axial direction, and the bolt is inserted into the bolt through hole to connect the first cylinder segment and the second cylinder segment.

[0023] Further, the sliding contact end is a ball head structure, the conductive part in the rotating conductive part and the stationary conductive part which contacts the sliding contact segment is provided with an arc-shaped ring groove matched with the extending segment.

[0024] The present application improves the prior art, specifically: the present application sets the corresponding cylindrical body for the conductive slip ring brush, sets the conductive contact in the cylindrical body, realizes the electrical connection of the two through the contact of the conductive contact and the corresponding conductive part, and sets the corresponding elastic part in the cylindrical body to exert the elastic force on the conductive contact to make the conductive contact extend out of the cylindrical body, so as to ensure the stability of the electrical connection. The other end of the cylindrical body is provided with a conductive part for contacting the corresponding conductive part, the conductive part is connected with the conductive contact through the flexible electric connecting piece, forming a complete passage. The radial size of the conductive slip ring brush provided by the present application is only the diameter of the cylindrical body, relatively, the radial space occupied by the brush is relatively small. And the conductive slip ring brush provided by the present application adopts the conductive contact for conduction, the contact area with the corresponding conductive part is relatively large, and the current carrying capacity is also relatively large. In summary, the conductive slip ring provided by the present application can install more conductive slip ring brushes when the radial size is certain, the conductive slip ring provided by the present application solves the problem of low current carrying grade of the conductive slip ring in the prior art when applied to the case with requirements on the radial size. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 Figure 1 is a structural schematic diagram of the conductive slip ring of the embodiment of the conductive slip ring of the present application;

[0026] Fig. 2 Figure 2 is a structural schematic diagram of the brush of the conductive slip ring of the embodiment of the conductive slip ring of the present application;

[0027] Fig. 3 Figure 3 is an axonometric view of the brush of the conductive slip ring of the embodiment of the conductive slip ring of the present application;

[0028] In the figure: 1, stationary conductive part; 2, rotating conductive part; 3, rotating shaft; 4, cylindrical body; 41, first cylinder section; 42, second cylinder section; 5, conductive contact; 51, conductive rod; 511, guide sliding table; 52, conductive sliding block; 521, lower pressing block; 522, sliding block; 6, end cover; 7, pre-tightening compression spring; 8, flexible electrical connection; 9, conductive piece; 91, conductive block; 92, upper pressing block. DETAILED DESCRIPTION

[0029] Specific concept of the conductive slip ring of the present application:

[0030] A conductive slip ring, comprising a stationary conductive part and a rotating conductive part, the rotating conductive part being centrally provided with a rotating shaft, the rotating shaft being rotated following a driving mechanism. The stationary conductive part or the rotating conductive part is fixedly provided with two or more conductive slip ring brushes, the conductive slip ring brushes being used to be installed on one of the rotating conductive part and the stationary conductive part and to realize the conduction of the two, the conductive slip ring brush comprising a cylindrical body, a conductive contact being slidingly installed in the cylindrical body, the conductive contact being provided with a sliding contact end extending out of the cylindrical body to contact the corresponding conductive part, the other end of the cylindrical body being provided with a conductive piece, and the cylindrical body being further provided with an elastic piece for keeping the sliding contact end extending out of the cylindrical body.

[0031] The conductive slip ring of this invention comprises a cylindrical body with corresponding conductive contacts installed inside. The conductive contacts directly contact the corresponding conductive components, and the other side is connected to a conductive component via a flexible electrical connector. The conductive component then contacts the corresponding conductive component, thereby achieving conductivity between the stationary and rotating conductive components. An elastic element is also provided to keep the conductive contacts extending out of the cylindrical body, ensuring the stability of the connection between the conductive contacts and the corresponding conductive components. Since the conductive components of the conductive slip ring brush of this invention are all installed inside the cylindrical body, the corresponding electrical connection structure is not damaged. Furthermore, the radial space occupied by the conductive slip ring brush of this invention is relatively small, and because the conductive contacts and corresponding conductive components are in surface contact, its current-carrying capacity is relatively high. In applications with specific radial dimension requirements, the technical solution of this invention can guarantee the current-carrying level, solving the problem of low current-carrying capacity in existing conductive slip rings when applied to applications with radial dimension requirements.

[0032] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0033] Embodiment 1 of the conductive slip ring of the present invention:

[0034] like Figs. 1-3 As shown: A conductive slip ring includes a stationary conductive component 1 and a rotating conductive component 2. A rotating shaft 3 is mounted at the center of the rotating conductive component 2, and the rotating shaft 3 rotates with a drive mechanism. Two or more conductive slip ring brushes are fixedly mounted on the stationary conductive component 1 or the rotating conductive component 2. The conductive slip ring brush is used to install on one of the rotating conductive component 2 and the stationary conductive component 1 to achieve conduction between the two. The conductive slip ring brush includes a cylindrical body 4, and a conductive contact 5 is slidably mounted inside the cylindrical body 4. One end of the conductive contact 5 extends out of the cylindrical body 4 to form a sliding contact end that contacts the corresponding conductive component. A conductive element 9 is provided at the other end of the cylindrical body 4. An elastic element is also provided inside the cylindrical body 4 to keep the sliding contact end extending out of the cylindrical body 4.

[0035] The conductive component 9 has a corresponding threaded hole, and the stationary conductive component 1 has a corresponding stepped hole. The fixing screw passes through the stepped hole and extends into the threaded hole on the conductive component 9 to fix the conductive component 9 and the stationary conductive component 1.

[0036] In this embodiment, the conductive element 9 is connected to the stationary conductive element 1, and the conductive contact 5 is in contact with the rotating conductive element 2, thereby achieving conductivity between the stationary conductive element 1 and the rotating conductive element 2. Of course, in other embodiments, the conductive contact 5 can also be in contact with the stationary conductive element 1, and the conductive element 9 can be connected to the rotating conductive element 2, thereby achieving conductivity between the stationary conductive element 1 and the rotating conductive element 2.

[0037] The conductive contact 5 of the device is slidingly guided in the cylindrical body 4. The conductive contact 5 can be made in a shape matching the inner hole of the entire cylindrical body, so as to realize the sliding guiding fit of the two. However, in this way, the space inside the cylindrical body is small, making the installation of the elastic member difficult, and the space of the elastic member is relatively small. Therefore, preferably, a guide sliding platform 511 matching the inner hole of the cylindrical body 4 is arranged on the conductive contact 5, and the conductive contact 5 is slidingly guided in the cylindrical body 4 by the cooperation of the guide sliding platform 511 and the inner wall of the cylindrical body 4. In this way, the guide sliding platform 511 cooperates with the inner wall of the cylindrical body 4 to realize the sliding guiding of the two, and relatively, only this part of the conductive contact 5 matches the cylindrical body 4 in shape and size, and the rest of the conductive contact 5 is smaller than the cylindrical body 4, so that there is a relatively large space in the cylindrical body 4 to install the corresponding elastic member and the like.

[0038] The conductive contact 5 can be directly installed in the cylindrical body 4, and the brush of the conductive slip ring is installed by first connecting the conductive member 9 with the stationary conductive part 1, and then pressing the conductive contact 5 on the rotating conductive part 2. However, in this way, it is relatively difficult to install, because it is necessary to ensure that the conductive contact 5 will not be pulled out of the cylindrical body 4 due to the elastic force of the elastic member. Therefore, preferably, the brush of the conductive slip ring further comprises an end cover 6 closing the cylindrical body 4, the end cover 6 is provided with a corresponding bolt hole, the bolt passes through the bolt hole and then passes through the bolt hole on the cylindrical body 4, the stationary conductive part 1 is provided with a corresponding counterbore, and the counterbore is provided with a nut, and the end cover 6, the cylindrical body 4 and the stationary conductive part 1 are fixed together by the cooperation of the bolt and the nut. The end cover 6 is provided with a through hole for the conductive contact 5 to extend out of, and the hole along the through hole cooperates with the guide sliding platform 511 to prevent the conductive contact 5 from being pulled out of the cylindrical body 4. By closing the cylindrical body 4 with the end cover 6 and preventing the conductive contact 5 from being pulled out of the cylindrical body 4 by the cooperation of the guide sliding platform 511 and the hole along the through hole on the end cover 6, the installation of the brush is relatively easy. The elastic member is a pre-tightening spring 7 sleeved on the conductive contact 5, and the pre-tightening spring 7 abuts against the side of the guide sliding platform 511 close to the conductive member 9. Of course, in other embodiments, other elastic members can also be used, for example, a disc spring set can be used as an elastic member, and the disc spring set is sleeved on the conductive contact 5.

[0039] The shape of the conductive contact 5 extending out of one end of the cylindrical body 4 can be a columnar structure, but if a columnar structure is adopted, the contact area of the conductive contact 5 with the rotating conductive part 2, that is, the surface area of the conductive contact 5, is relatively small, the current-carrying capacity is relatively low, and the installation precision of the conductive slip ring brush is relatively high. Therefore, preferably: the extending section of the conductive contact 5 extending out of the cylindrical body 4 is a ball head structure, and the rotating conductive part 2 is provided with a ball-shaped ring groove matching the extending section. By matching the ball head structure with the ball-shaped ring groove, the contact area is relatively large, and the corresponding current-carrying capacity is further improved. Moreover, the ball head structure matched with the corresponding arc-shaped groove can also reduce the friction, further reduce the loss of the ball head structure, and prolong the service life of the device. Moreover, during installation, if an error occurs between the brush and the slip groove, that is, a gap is formed between the two, the brush can be slightly offset, and then the conductive contact of the ball head structure is installed in the arc-shaped ring groove. Of course, in other embodiments, if the brush structure of the conductive slip ring is fixed on the rotating conductive part 2, the ball-shaped ring groove is provided on the stationary conductive part 1.

[0040] At the same time, in order to further optimize the effect of the electrical connection between the conductive contact 5 and the rotating conductive part 2, a layer of silver-carbon film or silver-copper alloy can be plated on the surface of the sliding contact end of the conductive contact 5, or a plurality of fine conductive fiber filaments can be fixed on the surface of the sliding contact end of the conductive contact to form a brush-like structure.

[0041] The pre-tightening compression spring 7 is sleeved on the conductive contact 5, one end of which is pressed against the guide sliding table 511, and the other end is pressed against the conductive part 9. One end of the flexible electrical connecting part 8 is connected to the conductive part 9, and the other end is connected to the conductive contact 5. However, in this way, when assembling the conductive slip ring brush, the pre-tightening compression spring 7 needs to be sleeved on the conductive contact 5 first, and then the flexible electrical connecting part 8 is connected to the conductive contact 5 and the conductive part 9 respectively. This installation method is difficult to install, and when in use, the pre-tightening compression spring 7 will deform, the flexible electrical connecting part 8 will bend, and the pre-tightening compression spring 7 will interfere with the flexible electrical connecting part 8. Therefore, preferably: the cylindrical body 4 includes a first cylinder segment 41 and a second cylinder segment 42. The second cylinder segment 42 is a barrel-shaped structure with one end open, and the barrel opening is closed by the end cover 6. A through hole is formed in the barrel bottom for the conductive contact 5 to extend into the first cylinder segment. The conductive part 9 is installed in the first cylinder segment 41. The conductive contact 5 extends out of the through hole and is connected to the flexible electrical connecting part 8 in the first cylinder segment. The flexible electrical connecting part 8 connects the conductive part 9 and the conductive contact 5. The first cylinder segment provides sufficient space for the deformation of the flexible electrical connecting part 8. One end of the pre-tightening compression spring 7 is pressed against the guide sliding table 511, and the other end is pressed against the barrel bottom of the second cylinder segment 42. When installing, the pre-tightening compression spring 7 is first sleeved on the conductive contact 5, then the conductive contact 5 is installed in the second cylinder segment 42, and the conductive contact 5 extends out of the second cylinder segment 42 and is connected to the conductive part 9 through the flexible electrical connecting part 8. The installation process is relatively convenient, and the installation difficulty is relatively low. The pre-tightening compression spring 7 and the flexible electrical connecting part 8 are in a relatively independent space, and they will not interfere with each other, avoiding mutual influence.

[0042] The contact surface between the first cylinder segment 41 and the second cylinder segment 42 can be a plane, which is fixed by the plane. However, using this method to fix, there may be a certain misalignment between the two when fixing, which may result in the inability to fix or the misalignment between the first cylinder segment 41 and the second cylinder segment 42 after fixing. Therefore, preferably: the first cylinder segment 41 and the second cylinder segment 42 are assembled by the way of stopper insertion, and the bolt through hole penetrates the first cylinder segment 41 and the second cylinder segment 42. The female stopper is formed on the first cylinder segment 41, and the male stopper is formed on the second cylinder segment 42, and the two are inserted by the stopper. Of course, in other embodiments, the male stopper can be formed on the first cylinder segment 41, and the female stopper can be formed on the second cylinder segment 42.

[0043] The conductive contact 5 can directly adopt a conductive rod 51, one end of which extends out of the cylindrical body 4 and is connected with the rotating conductive part 2, and the other end of which extends out of the second cylinder segment 42 and is connected with the flexible electric connecting piece 8. However, if this connection mode is adopted, since the current level of the conductive slip ring provided by the present application is high, a plurality of flexible electric connecting pieces 8 are needed, and therefore it is relatively difficult to directly connect the flexible electric connecting piece 8 with the conductive rod 51 during connection. Therefore, preferably, the conductive contact 5 comprises the conductive rod 51 and a conductive sliding block 52, the conductive rod 51 extends out of the second cylinder segment 42 and is detachably connected with the conductive sliding block 52, and the conductive sliding block 52 is connected with the conductive part 9 through the flexible electric connecting piece 8. The conductive sliding block 52 is slidingly installed in the first cylinder segment 41 and moves along with the conductive rod 51. The radial dimension of the conductive sliding block 52 is relatively large, and therefore the connection between the flexible electric connecting piece 8 and the conductive sliding block 52 is relatively easy. Further optimization: the surfaces of the conductive sliding block 52 and the conductive part 9, which face each other, are both flat, and both are slidingly installed in the first cylinder segment 41. Moreover, the detachable connection between the conductive sliding block 52 and the conductive rod 51 does not affect the installation of the pre-tightening spring 7.

[0044] The conductive slider 52 and the conductive rod 51 can be detachably connected in various ways. In the embodiment, the conductive rod 51 is provided with external threads at one end adjacent to the conductive slider 52, and the conductive slider 52 is provided with a threaded hole. The conductive rod 51 and the conductive slider 52 are connected by threads. Of course, in other embodiments, the two can be connected in other ways, for example, by a pin. The side of the conductive slider 52 adjacent to the conductive rod 51 is provided with a corresponding ring protrusion, and the conductive rod 51 can be inserted into the ring protrusion. The ring protrusion and the conductive rod 51 are both provided with through holes, and a fixing pin is inserted into the through holes to fix the conductive slider 52 and the conductive rod 51. However, no matter which way is used to achieve the detachable connection of the two, since the conductive part 9 is relatively fixed with the stationary conductive part 1, the conductive part 9 cannot rotate, which results in that the conductive slider 52 and the conductive rod 51 cannot rotate. However, if the conductive rod 51 is a round rod, due to the action of friction, the conductive rod 51 may rotate around its own axis. In order to avoid this situation, preferably, the guide sliding platform 511 is rotationally fixed with the cylindrical body 4. The inner hole of the cylindrical body 4 is a rectangular hole, and the guide sliding platform 511 is a rectangular block structure matching the inner hole of the cylindrical body 4, and the two are rotationally fixed. In other embodiments, the inner hole of the cylindrical body 4 can also be a hexagonal hole, and the guide sliding platform 511 is a hexagonal block structure matching the inner hole of the cylindrical body 4. Of course, in other embodiments, other ways can be used to achieve the rotational fixation of the two, for example, a long hole extending in the vertical direction is formed in the side wall of the cylindrical body 4, and a corresponding rotational hole is formed in the guide sliding platform 511. A rotational pin extends from the long hole into the rotational hole in the guide sliding platform 511 to achieve the rotational fixation of the two.

[0045] The flexible electric connection 8 can be made of copper wire, or aluminum wire, or conductive fiber, and in this embodiment, it is made of conductive fiber. In order to ensure the reliability of the electric connection, the flexible electric connection 8 is preferably crimped to the conductive slider 52 and the conductive member 9. The conductive member 9 includes a conductive block 91 and an upper pressing block 92, and the conductive slider 52 includes a sliding block 522 and a lower pressing block 521. The upper pressing block 92 presses the flexible electric connection 8 against the conductive block 91, and the lower pressing block 521 presses the flexible electric connection 8 against the sliding block 522. Because of the high current level, if the flexible electric connection 8 is welded to the conductive slider 52 or the conductive block 91, it is inconvenient to weld, the sliding block 522 and the conductive block 91 are relatively small in size, and the welding method requires soldering, which may cause heating and other problems due to the different resistance of the soldering tin and the corresponding flexible electric connection 8, and the conductive fiber cannot be welded. Therefore, in this embodiment, the conductive fiber is connected to the conductive slider 52 and the conductive member 9 by crimping. The sliding block 522 and the conductive block 91 are provided with corresponding through holes, which are counterbores. The upper pressing block 92 and the lower pressing block 521 are provided with corresponding threaded holes, and screws pass through the counterbores to fix the sliding block 522 and the lower pressing block 521, and the conductive block 91 and the upper pressing block 92, respectively, and press the conductive fiber against the sliding block 522 and the conductive block 91.

[0046] During installation, the pre-tightening spring 7 is first fitted on the conductive rod 51, then the conductive rod 51 is installed in the second cylinder section 42, and the end cover 6 is connected to the second cylinder section 42. Then the conductive rod 51 and the sliding block 522 are connected together by threading, and then the flexible electric connection 8 is pressed against the sliding block 522 by the lower pressing block 521, and then the flexible electric connection 8 is pressed against the conductive block 91 by the upper pressing block 92. Then the first cylinder section 41 is fitted on the conductive member 9 and the conductive slider 52, and the first cylinder section 41 and the second cylinder section 42 are inserted together. Then the entire assembled cylindrical main body 4 is fixed to the stationary conductive part 1 by bolts. Then the sliding contact end of the conductive rod 51 is aligned with the ball-shaped ring groove of the rotating conductive part 2.

[0047] The conductive sliding ring brush of the present application has the same structure as the brush structure of the conductive sliding ring in the above embodiment, and will not be described again. Of course, the conductive sliding ring brush of the present application can also be applied to the conductive sliding ring in the prior art, in which the stationary conductive part is ring-shaped and covers the outside of the cylindrical rotating conductive part.

[0048] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. The patent protection scope of the present application is subject to the claims, and any equivalent structural changes made in accordance with the content of the specification and drawings should also be included within the protection scope of the present application.

Claims

1. An electrically conductive slip ring brush for mounting on one of a rotating electrically conductive member and a stationary electrically conductive member and effecting electrical communication between the two, characterized by: The conductive slip ring brush comprises a cylindrical body, a conductive contact is slidingly installed in the cylindrical body, one end of the conductive contact extends out of the cylindrical body to form a sliding contact end, a conductive part is arranged at the other end of the cylindrical body, and an elastic part is further arranged in the cylindrical body to keep the sliding contact end extending out of the cylindrical body.

2. The electrically conductive slip ring brush of claim 1, wherein: A guide sliding platform is arranged on the conductive contact and matched with the inner hole of the cylindrical body, and the conductive contact is slidingly installed in the cylindrical body through cooperation of the guide sliding platform and the inner wall of the cylindrical body.

3. The electrically conductive slip ring brush of claim 2, wherein: The conductive slip ring brush further comprises an end cover for closing the cylindrical body, the end cover is fixed with the cylindrical body, a through hole is formed in the end cover for the conductive contact to extend out, the hole of the through hole is matched with the stop of the guide sliding platform, and the elastic part is a pre-tightening compression spring sleeved on the conductive contact and abutting against the side of the guide sliding platform close to the conductive part.

4. An electrically conductive slip ring brush according to claim 3, wherein: The cylindrical body comprises a first cylinder segment and a second cylinder segment, the second cylinder segment is a barrel-shaped structure with an open end, the end cover is fixed on the barrel opening, a through hole is formed in the barrel bottom for the conductive contact to extend into the first cylinder segment, the other end of the pre-tightening compression spring abuts against the barrel bottom of the second cylinder segment, and the conductive part is installed in the first cylinder segment and connected with the conductive contact through a flexible electric connecting piece.

5. An electrically conductive slip ring brush according to claim 4, wherein: The conductive contact comprises a conductive rod and a conductive sliding block, the conductive rod extends out of the second cylinder segment and is detachably connected with the conductive sliding block, and the conductive sliding block is connected with the conductive part through the flexible electric connecting piece.

6. An electrically conductive slip ring brush according to claim 5, wherein: The conductive rod and the conductive sliding block are connected through threads, and the guide sliding platform is rotationally matched with the cylindrical body.

7. The electrically conductive slip ring brush of claim 5, wherein: The conductive part comprises a conductive block and an upper pressing block, and the conductive sliding block comprises a sliding block and a lower pressing block, the upper pressing block presses the flexible electric connecting piece against the conductive block, and / or the lower pressing block presses the flexible electric connecting piece against the sliding block.

8. An electrically conductive slip ring brush according to any one of claims 5-7, characterized in that: One of the first cylinder segment and the second cylinder segment is provided with a female stop, the other is provided with a male stop, the two are connected through cooperation of the female stop and the male stop, bolt through holes are formed in the first cylinder segment and the second cylinder segment and penetrating through the corresponding cylinder segment in the axial direction, and a bolt is inserted into the bolt through hole to connect the first cylinder segment and the second cylinder segment.

9. A conductive slip ring comprising a stationary conductive part and a rotating conductive part, and two or more conductive slip ring brushes are fixedly installed on the stationary conductive part or the rotating conductive part, characterized in that: The conductive slip ring brush is the conductive slip ring brush according to any one of claims 1-8.

10. The electrically conductive slip ring of claim 9, wherein: The sliding contact end is in a ball head structure, and an arc-shaped ring groove matched with the extending segment is formed in the conductive part of the rotating conductive part and the stationary conductive part in contact with the sliding contact segment.

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