Conductive slip ring and robot

Abstract

This utility model relates to the field of conductive slip ring technology, specifically a conductive slip ring and a robotic arm. The conductive slip ring includes a stator structure and a rotor structure. The robotic arm includes a robotic arm, a rotating part, and a working part. The rotating part is rotatably mounted on the robotic arm, and the working part is detachably mounted on the rotating part. The stator structure includes a mounting base and a brush part. The mounting base is sleeved on the outside of the rotating part and detachably mounted on the robotic arm. The brush part is detachably mounted on the side of the mounting base away from the robotic arm and is electrically connected to the control structure of the external working part. By adopting a modular stator and rotor structure, the stator is detachably fixed to the robotic arm, and the rotor is detachably sleeved on the rotating part of the robotic arm. The slip ring can be quickly installed and removed without disassembling the entire robotic arm or housing, improving maintenance efficiency. At the same time, since the rotor is not mounted on the working part, the conductive slip ring does not need to be disassembled when replacing the working part with the same power supply and signal interface specifications, significantly improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of conductive slip ring technology, specifically a conductive slip ring and a robotic arm. Background Technology

[0002] As a complex electrical component, conductive slip rings are mainly used to solve the problem of wire entanglement when equipment rotates 360 degrees, and to meet the needs of dynamic power supply and data signal transmission. They are especially important in robotic arms, automotive manufacturing, medical and other fields.

[0003] The existing utility model patent CN202231280U proposes a conductive slip ring. This utility model adopts a stator-rotor split structure and realizes signal / power transmission through the sliding contact between the brush filament and the metal ring. The internal stator circuit board and rotor circuit board replace the traditional wires.

[0004] As described in the above technical solution, the use of a cylindrical encapsulation of stator upper cover, stator lower cover, metal shell and retaining ring, with components stacked layer by layer, requires the entire shell and retaining ring to be removed on-site to access the interior, resulting in time-consuming maintenance. At the same time, the rotor metal ring is fixed to the brush filaments and circuit board by welding, so if a signal fails, it cannot be replaced individually and the entire component must be reworked. In the application of the robotic arm, there are problems with inconvenient disassembly and maintenance, which affects the efficiency of operation. Utility Model Content

[0005] To address the technical problems in the prior art, this utility model provides a conductive slip ring and a robotic arm, aiming to solve the problem that the existing conductive slip rings are inconvenient to disassemble and maintain in the application of robotic arms, thus affecting work efficiency.

[0006] A conductive slip ring, used in a robotic arm, comprises a stator structure and a rotor structure, wherein...

[0007] The robotic arm includes a robotic arm, a rotating part, and a working part. The rotating part is rotatably mounted on the robotic arm, and the working part is detachably mounted on the rotating part.

[0008] The stator structure includes a mounting base and a brush section. The mounting base is sleeved on the outside of the rotating part and is detachably mounted on the robotic arm. The brush section is detachably mounted on the side of the mounting base away from the robotic arm and is electrically connected to the control structure of the external working part.

[0009] The rotor structure includes a rotating ring section, which is detachably disposed on the outer peripheral wall of the rotating part and corresponds to the brush section. The rotating ring section is used to continuously abut against the brush section during rotation. The rotating ring section is electrically connected to the working part.

[0010] Optionally, the rotating ring is formed by several fan-shaped conductive sheets, with the ends of adjacent conductive sheets abutting each other to form a continuous conductive path.

[0011] Optionally, the rotor structure further includes a plug-in portion and elastic bridge plates, wherein,

[0012] The plug-in portion includes multiple plug-in portions, each plug-in portion being located in the mating end region of the conductive sheet;

[0013] The elastic bridge piece is inserted into the insertion part to maintain the electrical continuity of adjacent conductive pieces.

[0014] Optionally, the brush section includes a brush holder and a conductive end, wherein,

[0015] The brush holder is fixedly mounted on the mounting base;

[0016] The conductive end is located on the side of the brush holder facing the rotating part, and the conductive end is electrically connected to the control structure of the external working part.

[0017] Optionally, the contact surface of the conductive end is arranged in a fan shape to match the conductive sheet, so as to always bridge the adjacent conductive sheet during rotation and avoid current interruption when the conductive end crosses the seam of the adjacent conductive sheet.

[0018] Optionally, the rotor structure further includes a support frame and a connecting column, wherein,

[0019] The support frame is detachably mounted on the outer peripheral wall of the rotating part and is located on the side of the rotating part away from the brush part;

[0020] The connecting posts include multiple ones, which are respectively disposed between multiple conductive sheets and the support frame, and are used to detachably fix the conductive sheets to the support frame.

[0021] Optionally, the support frame is formed by two symmetrical sector blocks, and the mating ends of the two sector blocks are fixed by detachable connectors.

[0022] Optionally, a protective cover is also included, which covers the outer periphery of the stator and rotor structures and is fixed to the robotic arm.

[0023] Optionally, the protective cover includes two arc-shaped cover members, which are symmetrically arranged to form a protective cover.

[0024] This invention also provides a robotic arm, including the aforementioned conductive slip ring.

[0025] Compared with the prior art, the conductive slip ring and robotic arm provided by this utility model have the following advantages:

[0026] (1) By adopting a modular stator and rotor structure, the stator is detachably fixed on the robotic arm and the rotor is detachably fitted on the rotating part of the robotic arm. The slip ring can be quickly disassembled and installed without disassembling the robotic arm or the outer shell, thus improving maintenance efficiency. At the same time, since the rotor is not installed on the working part, the conductive slip ring does not need to be disassembled when changing the working part of the robotic arm (with the same power / signal interface specifications), which significantly improves work efficiency.

[0027] (2) By designing the rotating part as several independently replaceable fan-shaped conductive sheets, and using plug-in elastic bridge plates to maintain continuous electrical contact at their joints, a continuous and reliable conductive path is ensured, and a quick replacement of a single sheet failure is achieved. At the same time, the conductive end adopts a fan-shaped bridging structure that matches the conductive sheet, further eliminating the risk of instantaneous power outage when the brush filaments pass through the joint. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the connection between a conductive slip ring and a robotic arm according to this utility model;

[0029] Figure 2 This is a schematic diagram showing the disassembly of a conductive slip ring and a robotic arm according to this utility model;

[0030] Figure 3 This is a schematic diagram showing the disassembled structure of a conductive slip ring according to the present invention;

[0031] Figure 4 This is a schematic diagram of the rotating part structure of a conductive slip ring according to the present invention;

[0032] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the stator structure of a conductive slip ring according to the present invention.

[0034] In the diagram: 1. Robotic arm; 11. Robotic arm; 12. Rotating part; 13. Working part; 2. Stator structure; 21. Mounting base; 22. Brush part; 221. Brush holder; 222. Conductive end; 3. Rotor structure; 31. Rotary ring part; 311. Conductive sheet; 32. Insertion part; 33. Elastic bridge plate; 34. Support frame; 35. Connecting column; 341. Sector block; 4. Protective cover; 41. Arc-shaped cover. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-6 The present application proposes a conductive slip ring that acts on a robotic arm 1. The conductive slip ring includes a stator structure 2 and a rotor structure 3.

[0037] like Figure 1-3 As shown, the robotic arm 1 includes a robotic arm 11, a rotating part 12, and a working part 13. The rotating part 12 is rotatably mounted on the robotic arm 11, and the working part 13 is detachably mounted on the rotating part 12. The stator structure 2 includes a mounting base 21 and a brush part 22. The mounting base 21 is sleeved on the outside of the rotating part 12 and is detachably mounted on the robotic arm 11. The brush part 22 is detachably mounted on the side of the mounting base 21 away from the robotic arm 11 and is electrically connected to the control structure of the external working part 13. The rotor structure 3 includes a rotating ring part 31, which is detachably mounted on the outer peripheral wall of the rotating part 12 and corresponds to the brush part 22. The rotating ring part 31 is used to continuously contact the brush part 22 during rotation. The rotating ring part 31 is electrically connected to the working part 13, and the connection method can use existing components such as wires.

[0038] Specifically, the mounting base 21 is first fixed to the end of the robotic arm 11 using a detachable method such as bolts or snap-locks. Then, the brush part 22 is plugged into or fixed to the mounting base 21 with screws. The rotating ring part 31 is directly fitted onto the outer circle of the rotating part 12 and holds the rotating part 12 tightly. When disassembling and maintaining, it is not necessary to disassemble the robotic arm 11 or the outer shell as a whole. Only the working part 13 needs to be removed to quickly disassemble and install the slip ring, which improves maintenance efficiency. The key is that the rotating ring part 31 is fixed to the rotating part 12 rather than the working part 13. When replacing the working part 13 with the same interface specification as the welding gun or gripper, it is not necessary to disassemble the entire conductive slip ring. Only the working part 13 needs to be replaced, and then the wiring with the rotating ring part 31 can be reconnected. This significantly shortens the downtime for changing lines and improves the efficiency of continuous operation.

[0039] In some embodiments, such as Figure 4-5 As shown, the rotating ring 31 is surrounded by a number of fan-shaped conductive sheets 311, and the ends of adjacent conductive sheets 311 abut against each other to form a continuous conductive path; wherein, the rotor structure 3 also includes a plug-in part 32 and an elastic bridge piece 33. The plug-in part 32 includes multiple parts, and each plug-in part 32 is located in the mating end region of the conductive sheet 311; the elastic bridge piece 33 is plugged into the plug-in part 32 to maintain the electrical continuity of adjacent conductive sheets 311.

[0040] Specifically, during actual assembly, each sector-shaped conductive sheet 311 is sequentially attached to the outer circumference of the rotating part 12. The two ends of the elastic bridge piece 33 are respectively inserted into the insertion parts 32 at the ends of adjacent conductive sheets 311. The insertion parts 32 can be inserts adapted to the elastic bridge piece 33. The elastic bridge piece 33 is made of a highly conductive elastic alloy (such as copper alloy) and acts as a conductive bridge to electrically short-circuit adjacent conductive sheets 311. When a conductive sheet 311 needs to be replaced, the faulty sheet can be radially removed simply by pulling out the bridge piece. After the new sheet is in place, it is reinserted into the same elastic bridge piece 33, and the current path is instantly restored. The remaining conductive sheets 311 and bridge pieces do not need to be changed. This ensures that the circumferential current remains continuous and enables rapid replacement of single-sheet faults, making maintenance convenient and quick.

[0041] In some embodiments, such as Figure 6 As shown, the brush unit 22 includes a brush holder 221 and a conductive end 222. The brush holder 221 is fixedly mounted on the mounting base 21. The conductive end 222 is located on the side of the brush holder 221 facing the rotating ring 31. The conductive end 222 is electrically connected to the control structure of the external operation unit 13. The connection can be made using conventional components such as wires. The contact surface of the conductive end 222 is arranged in a fan shape to match the conductive sheet 311, so as to always bridge the adjacent conductive sheet 311 during rotation and avoid current interruption when the conductive end 222 crosses the seam of the adjacent conductive sheet 311.

[0042] Specifically, the conductive end 222 is processed into a fan-shaped arc surface that matches the fan-shaped conductive sheet 311, so that when the rotating ring 31 rotates, the conductive end 222 simultaneously covers at least two conductive sheets 311; the current no longer relies on "point contact" to pass through the seam, but is continuously transmitted through the parallel path of conductive end 222—conductive sheet 311—elastic bridge sheet 33, completely eliminating the instantaneous power outage phenomenon caused by the "passing through the seam" of traditional brush bristles, ensuring stable signal / power output when the robot arm 1 rotates at high speed; here, the focus is on the shape of the conductive end 222 to ensure that there is no instantaneous power outage phenomenon. As for the contact between the conductive part and the rotating ring 31, the method used to transmit electrical energy and signals are all conventional means in the prior art, and will not be described in detail here.

[0043] In some embodiments, such as Figure 3-4 As shown, the rotor structure 3 also includes a support frame 34 and a connecting column 35. The support frame 34 is detachably disposed on the outer peripheral wall of the rotating part 12 and located on the side of the rotating ring part 31 away from the brush part 22. The connecting column 35 includes multiple columns, which are respectively disposed between multiple conductive sheets 311 and the support frame 34, for detachably fixing the conductive sheets 311 to the support frame 34. The support frame 34 is formed by two symmetrical sector blocks 341, and the mating ends of the two sector blocks 341 are fixed by detachable connectors.

[0044] Specifically, two symmetrical sector-shaped blocks 341 are fitted onto the rotating part 12 and connected end-to-end with screws or clips to form a complete support ring. The connected parts can also grip the rotating part 12, making assembly and disassembly convenient and quick. Each sector-shaped block 341 is rigidly connected to its corresponding conductive sheet 311 via a connecting post 35, providing stable support for the conductive sheet. If a conductive sheet 311 is damaged, only the corresponding conductive sheet 311 needs to be removed. The new part can be installed in the original sequence and tightened again; no changes are required to the remaining units. This design allows the rotor to be weld-free as a whole, with partial disassembly and assembly, making maintenance convenient and quick.

[0045] In some embodiments, such as Figure 1-2 As shown, a conductive slip ring also includes a protective cover 4, which covers the outer periphery of the stator structure 2 and the rotor structure 3 and is fixed on the robotic arm 11. The protective cover 4 includes two arc-shaped cover pieces 41, which are symmetrically arranged to form the protective cover 4.

[0046] Specifically, the protective cover 4 is configured as two arc-shaped cover parts 41, which can be connected by existing fixing components such as buckles or screws. During operation, the cover parts completely block dust and cutting fluid, extending the slip ring life. During maintenance, the internal slip ring can be exposed by opening one side buckle, and quick and convenient maintenance can be achieved without removing the working part 13.

[0047] This utility model also provides a robotic arm, including the aforementioned conductive slip ring. After the robotic arm 11, rotating part 12 and working part 13 are assembled with the conductive slip ring, they have all the aforementioned advantages of modularity, quick maintenance, partial replaceability and continuous conductivity, which significantly improves production cycle and reliability.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conductive slip ring, applied to a robotic arm (1), characterized in that, The conductive slip ring includes a stator structure (2) and a rotor structure (3), wherein, The robotic arm (1) includes a robotic arm (11), a rotating part (12) and a working part (13). The rotating part (12) is rotatably mounted on the robotic arm (11), and the working part (13) is detachably mounted on the rotating part (12). The stator structure (2) includes a mounting base (21) and a brush section (22). The mounting base (21) is sleeved on the outside of the rotating part (12) and is detachably mounted on the robotic arm (11). The brush section (22) is detachably mounted on the side of the mounting base (21) away from the robotic arm (11) and is electrically connected to the control structure of the external operation part (13). The rotor structure (3) includes a rotating ring (31), which is detachably disposed on the outer peripheral wall of the rotating part (12) and corresponds to the brush part (22). The rotating ring (31) continuously contacts the brush part (22) during rotation. The rotating ring (31) is electrically connected to the working part (13).

2. The conductive slip ring according to claim 1, characterized in that, The rotating part (31) is formed by a number of fan-shaped conductive sheets (311), and the ends of adjacent conductive sheets (311) abut against each other to form a continuous conductive path.

3. A conductive slip ring according to claim 2, characterized in that, The rotor structure (3) further includes a plug-in portion (32) and an elastic bridge plate (33), wherein, The plug-in portion (32) includes a plurality of plug-in portions (32), each plug-in portion (32) being disposed in the mating end region of the conductive sheet (311); The elastic bridge piece (33) is inserted into the insertion part (32) to maintain the electrical continuity of adjacent conductive pieces (311).

4. A conductive slip ring according to claim 2, characterized in that, The brush section (22) includes a brush holder (221) and a conductive end (222), wherein, The brush holder (221) is fixedly mounted on the mounting base (21); The conductive end (222) is located on the side of the brush holder (221) facing the rotating part (31), and the conductive end (222) is electrically connected to the control structure of the external working part.

5. A conductive slip ring according to claim 4, characterized in that, The contact surface of the conductive end (222) is arranged in a fan shape to match the conductive sheet (311), so as to always bridge the adjacent conductive sheet (311) during rotation, and to avoid current interruption when the conductive end (222) crosses the seam of the adjacent conductive sheet (311).

6. A conductive slip ring according to claim 2, characterized in that, The rotor structure (3) also includes a support frame (34) and a connecting column (35), wherein, The support frame (34) is detachably mounted on the outer peripheral wall of the rotating part (12) and located on the side of the rotating ring part (31) away from the brush part (22); The connecting post (35) includes multiple ones, which are respectively disposed between multiple conductive sheets (311) and support frame (34) for detachably fixing the conductive sheets (311) to the support frame (34).

7. A conductive slip ring according to claim 6, characterized in that, The support frame (34) is formed by two symmetrical sector blocks (341), and the mating ends of the two sector blocks (341) are fixed by detachable connectors.

8. A conductive slip ring according to claim 1, characterized in that, It also includes a protective cover (4), which covers the outer periphery of the stator structure (2) and the rotor structure (3) and is fixed to the robotic arm (11).

9. A conductive slip ring according to claim 8, characterized in that, The protective cover (4) includes two arc-shaped cover pieces (41), which are symmetrically arranged to form the protective cover (4).

10. A robotic arm, characterized in that, Includes the conductive slip ring according to any one of claims 1-9.

Images