Brush structure of a conductive slip ring

Abstract

The utility model discloses a brush structure of conductive slip ring relates to cable or wire to brush's connection technical field. The brush structure of conductive slip ring, including conductive slip ring assembly and brush module assembly, its characterized in that: conductive slip ring assembly contains rotating portion, front and rear fixed part, and rotating portion is cylindrical, and the outer surface is equipped with at least one annular groove as the conductive ring channel, and both ends are equipped with the axle head, and front and rear fixed part respectively sets up in the both ends axle head of rotating portion, and brush module assembly includes insulating main body, conducting column and contact component, and quick -detach buckle assembly is fixed in the end face of front and rear fixed part, and quick -detach buckle assembly includes: buckle base, elastic buckle, through this way, can quickly with brush from conductive slip ring disassembles down, and then solved the traditional screw fixed in the narrow space operation difficult, disassembly time -consuming problem.

Description

Technical Field

[0001] This utility model relates to the field of connection technology from cable or wire to brush, specifically a brush structure with a conductive slip ring. Background Technology

[0002] In industrial machinery, automated equipment, and rotary transmission systems, conductive slip rings are key devices for transmitting current or signals between rotating and stationary components. Their performance directly affects the operational stability and maintenance efficiency of the equipment. Among them, the brush structure, as the core component of the conductive slip ring, is responsible for conducting current through contact with the rotating ring track. Because it is in a state of sliding friction for a long time, it is a consumable component and needs to be disassembled and replaced regularly to ensure conductivity. In the prior art, the brush structure of conductive slip rings is usually connected to the fixed part of the slip ring by screw fixing, welding or complex snap-fit ​​method. For example, some brushes are directly locked to the fixed end face of the slip ring by multiple fastening screws. When disassembling, screwdrivers and other tools are needed to loosen the screws one by one. This is not only cumbersome, but also difficult to operate in a confined space, which makes it difficult to disassemble and assemble the brushes and reduces the disassembly and assembly efficiency of conductive slip rings. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a brush structure for a conductive slip ring, which has the function of quickly removing the brush from the conductive slip ring, thereby solving the problems of difficult operation and time-consuming disassembly when the traditional screw is fixed in a narrow space.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a brush structure for a conductive slip ring, comprising a conductive slip ring assembly and a brush module assembly, wherein the conductive slip ring assembly includes a rotating part and front and rear fixed parts; The rotating part is cylindrical, with at least one annular groove on its outer surface as a conductive channel, and shaft ends at both ends. The front and rear fixed parts are respectively sleeved on the two ends of the rotating part shaft. The front and rear fixed parts are disc-shaped structures with mounting holes. The brush module assembly includes an insulating body, conductive pillars, and contact components, with the contact components contacting the annular groove to transmit current. The quick-release clip assembly is fixed to the end faces of the front and rear fixed parts for detachable connection of the brush module assembly. The quick-release clip assembly includes: Clip-on base; The elastic buckle is shaped like a "door" and includes two vertical pieces on both sides, a top horizontal piece connecting the two vertical pieces, and a locking protrusion located on the inner side of the top horizontal piece. The bottom of the two vertical pieces on both sides is fixed to the buckle base, and a U-shaped groove is provided in the middle. The unlocking handle is fixed to the outside of the top horizontal plate. By pulling the unlocking handle, the two vertical plates on both sides can be opened outward, so that the locking bosses can disengage from the locking holes of the brush module assembly.

[0005] Preferably, the annular groove of the rotating part has a rectangular cross-section, rounded corners at the groove opening, and a copper alloy conductive layer on the inner sidewall of the groove.

[0006] Preferably, the buckle base is fixed to the end face of the front and rear fixing parts by screws, two guide holes are opened on the lower side of the insulating body, and two guide sleeves are fixedly connected to the upper side of the front and rear fixing parts. The two guide sleeves are respectively adapted to the two guide holes, and the guide holes are at different heights to form an anti-misoperation structure.

[0007] Preferably, the elastic buckle is made of spring steel sheet with a thickness of 1.0-1.5mm, and the locking boss is semi-circular with a radius of 2.0-3.0mm, which is interference-fitted with the locking hole on the side of the brush module assembly with an interference amount of 0.1-0.2mm.

[0008] Preferably, the unlocking handle has an L-shaped structure, and a spherical grip section is fixedly connected to the upper end of the unlocking handle. The surface of the grip section is provided with a knurled anti-slip structure.

[0009] Preferably, the elastic buckle is made of POM plastic, and the U-shaped deformation groove has a depth of 4-6mm, which is suitable for quick assembly and disassembly under normal temperature conditions.

[0010] Preferably, the quick-release buckle assembly further includes a magnetic attraction auxiliary structure, which includes a magnet located on the outside of the top horizontal piece and an iron piece located at the corresponding position of the buckle base, for assisting the elastic buckle in resetting.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) The brush structure of the conductive slip ring can quickly remove the brush from the conductive slip ring, thus solving the problems of difficult operation and time-consuming disassembly when the traditional screw is fixed in a narrow space.

[0012] (2) The brush structure of the conductive slip ring, through the elastic buckle of the quick-release buckle assembly and the unlocking handle, realizes the tool-free quick disassembly and assembly of the brush module assembly, and the single disassembly and assembly time is shortened compared with the traditional screw fixing method. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the brush structure of a conductive slip ring according to the present invention; Figure 2 This is a schematic diagram of the cross-sectional connection structure of the insulating main body of this utility model; Figure 3 This is a schematic diagram of the connection structure at the quick-release buckle assembly of this utility model; Figure 4 This is a schematic diagram of the connection structure of the conductive slip ring assembly and the quick-release buckle assembly of this utility model; Figure 5 This is a schematic diagram of the brush structure of the conductive slip ring for magnetic assisted unlocking according to this utility model; Figure 6 for Figure 5 Enlarged diagram of point A.

[0014] Reference numerals: 1. Conductive slip ring assembly; 2. Brush module assembly; 3. Rotating part; 4. Front and rear fixed parts; 5. Insulating body; 51. Guide hole; 6. Conductive post; 7. Contact assembly; 8. Quick-release buckle assembly; 9. Buckle base; 10. Elastic buckle; 101. Side vertical pieces; 102. Top horizontal piece; 103. Locking boss; 104. U-shaped deformation groove; 11. Annular groove; 12. Shaft head; 13. Mounting hole; 14. Unlocking handle; 15. Locking hole; 16. Screw; 17. Magnetic auxiliary structure; 171. Magnet; 172. Iron sheet. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0018] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Please see Figure 1-6 This utility model provides a new technical solution: a brush structure for a conductive slip ring, including a conductive slip ring assembly 1: the core part of the brush structure of the conductive slip ring, used to realize current transmission between the rotating part and the fixed part.

[0020] Rotating part 3: It is cylindrical and is the main rotating structure in the conductive slip ring.

[0021] The outer surface is provided with at least one annular groove 11 as a conductive loop for transmitting current. The annular groove 11 has a rectangular cross-section, rounded corners at the groove opening, and a copper alloy conductive layer on the inner sidewall of the groove to improve conductivity.

[0022] The two ends are provided with shaft heads 12, which are used to cooperate with the front and rear fixed parts 4 to realize the support and positioning of the rotating part.

[0023] Front and rear fixed parts 4: respectively fitted onto the two ends of the shaft head 12 of the rotating part 3, serving to fix the rotating part.

[0024] It has a disc-shaped structure and is equipped with mounting holes 13, which facilitates the installation of the conductive slip ring assembly onto other equipment.

[0025] Brush module assembly 2: works in conjunction with conductive slip ring assembly 1 to transmit current, and is detachably connected via quick-release buckle assembly 8.

[0026] Insulating body 5: As the main structure of brush module assembly 2, it serves to insulate and support other components.

[0027] Two guide holes 51 are provided on the lower side, and two guide sleeves are fixedly connected to the upper side of the front and rear fixed parts 4. The two guide sleeves are respectively adapted to the two guide holes 51, and the guide holes 51 are at different heights to form an anti-error structure, so as to facilitate the accurate installation of the brush module assembly 2 onto the conductive slip ring assembly 1.

[0028] Conductive post 6: Used to transmit current, leading out or introducing the current received by contact assembly 7.

[0029] Contact assembly 7: It contacts the annular groove 11 of the rotating part 3 to transmit current and realize the electrical connection between the rotating part and the stationary part.

[0030] Quick-release buckle assembly 8: fixed to the end face of the front and rear fixed parts 4, used for detachable connection of brush module assembly 2, facilitating the installation and removal of brush module assembly 2.

[0031] Clip base 9: As the basic support structure of quick-release clip assembly 8, it is fixed to the end face of the front and rear fixed parts 4 by screws 16.

[0032] Elastic buckle 10: It is shaped like a "door" and includes two vertical pieces 101 on both sides, a top horizontal piece 102 connecting the two vertical pieces 101, and a locking boss 103 located inside the top horizontal piece 102.

[0033] The bottom of the two vertical pieces 101 is fixed to the buckle base 9, and a U-shaped deformation groove 104 is provided in the middle, so that the elastic buckle 10 is elastic and can deform.

[0034] The locking boss 103 is semi-circular with a radius of 2.0-3.0mm. It is interference-fitted with the locking hole 15 on the side of the brush module assembly 2 with an interference amount of 0.1-0.2mm, and is used to lock the brush module assembly 2.

[0035] The elastic buckle 10 can be made of spring steel sheet with a thickness of 1.0-1.5mm, suitable for scenarios requiring high strength and elasticity; it can also be made of POM plastic material, with a U-shaped deformation groove 104 with a depth of 4-6mm, suitable for quick assembly and disassembly in normal temperature environments.

[0036] Unlocking handle 14: Fixed to the outside of the top horizontal piece 102, it has an L-shaped structure. The upper end of the unlocking handle 14 is fixedly connected to a spherical grip section. The surface of the grip section is provided with a knurled anti-slip structure for easy gripping by the operator.

[0037] Pulling the unlocking handle 14 can cause the two vertical plates 101 on both sides to open outward, so that the locking boss 103 can disengage from the locking hole 15 of the brush module assembly 2, thereby realizing the disassembly of the brush module assembly 2.

[0038] Magnetic attraction auxiliary structure 17: includes a magnet 171 located on the outside of the top horizontal piece 102 and an iron piece 172 located at the corresponding position of the buckle base 9.

[0039] Used to assist in resetting the elastic buckle 10, after unlocking, the elastic buckle 10 is returned to its initial position by magnetic attraction, making it easy to install next time.

[0040] Example 1: Standard Structure Factory Spot Check (Basic Testing) Elastic buckle: A "door" shaped spring steel sheet (1.2mm thick), with an L-shaped metal handle (6mm in diameter) welded to the outer side of the top horizontal piece. Brush contacts: made of silver-graphite material (60% silver content) Clip base: PA66 + 30% glass fiber material, with Φ6mm guide sleeve Rotating part: Annular groove plated with copper alloy, groove width 8mm Installation test: Take 10 slip rings to be tested. The tester uses the standard procedure to install the brush module - align it with the guide sleeve and insert it. After hearing a "click" sound, confirm that it is locked and record the installation time of a single unit (average 3.2 seconds). Conductivity test: Connect a low-voltage DC power supply (12V / 5A), rotate continuously for 1 hour (300rpm), and monitor the contact resistance with a multimeter (stable at 2-3mΩ, without fluctuation). Disassembly test: Pull the handle to unlock, record the disassembly time for a single unit (average 2.8 seconds), check that the buckle "protrusion" is not deformed and the contact points are not obviously worn. Results: All 10 units passed the tests for installation smoothness, resistance stability, and disassembly integrity, and were deemed qualified.

[0041] Example 2: Replacement of Plastic Clips (Low Temperature Environment Adaptability Test) like Figure 4 As shown, the elastic buckle material has been replaced with POM plastic (1.5mm thick) instead of spring steel sheet, while retaining the L-shaped metal handle and increasing the depth of the U-shaped groove to 5mm. Low temperature pretreatment: Place the slip ring and brush module in a -20℃ environmental chamber for 2 hours. Installation test: After removal, installation was carried out immediately. It was found that due to the low temperature brittleness, the plastic clips of 3 units showed slight cracking (the steel clips did not have this problem). Unlocking test: When the handle is pulled, the two plastic clips "stuck" (could not spring back after deformation), and the unlocking time was extended to 8 seconds (2.8 seconds for the standard structure). The result indicates that the plastic clips are not reliable enough in low-temperature environments and are only suitable for factory testing at room temperature. Batches used in low-temperature environments should be excluded.

[0042] Example 3: Magnetic-assisted unlocking (anti-accidental touch test) like Figure 5 and Figure 6 As shown, remove the handle, attach a strong magnet (8mm in diameter) to the outside of the upper steel plate, install an iron plate at the corresponding position of the buckle base, and reset it with magnetic assistance; a special magnetic tool is required to unlock it. Accidental activation test: Simulating transportation bumps (vibration frequency 5-50Hz), none of the 10 slip rings were unlocked due to vibration (2 slip rings in the standard handle structure were accidentally unlocked). Disassembly and assembly test: Special tools are required for unlocking, and the disassembly time for a single unit increases to 5.5 seconds (2.8 seconds for the standard structure), but the unlocking force is more consistent (deviation ≤2N). Result determination: The magnetic structure has excellent anti-accidental contact performance and is suitable for batches with high safety requirements (such as slip rings for medical equipment), but the detection efficiency is slightly lower and the detection category needs to be marked separately.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A brush structure for a conductive slip ring, comprising a conductive slip ring assembly (1) and a brush module assembly (2), characterized in that: The conductive slip ring assembly (1) includes a rotating part (3) and a front and rear fixed part (4); The rotating part (3) is cylindrical, with at least one annular groove (11) on its outer surface as a conductive loop, and shaft heads (12) at both ends. The front and rear fixed parts (4) are respectively sleeved on the two ends of the rotating part (3) shaft head (12). The front and rear fixed parts (4) are disc-shaped structures with mounting holes (13). The brush module assembly (2) includes an insulating body (5), a conductive post (6) and a contact assembly (7), which contacts the annular groove (11) to transmit current. The quick-release buckle assembly (8) is fixed to the end face of the front and rear fixed parts (4) for detachable connection of the brush module assembly (2). The quick-release buckle assembly (8) includes: Snap-on base (9); The elastic buckle (10) is in the shape of a "door" and includes two vertical pieces (101), a top horizontal piece (102) connecting the two vertical pieces (101) and a locking boss (103) located inside the top horizontal piece (102). The bottom of the two vertical pieces (101) is fixed to the buckle base (9), and a U-shaped groove (104) is provided in the middle. The unlocking handle (14) is fixed to the outside of the top horizontal piece (102). By pulling the unlocking handle (14), the two vertical pieces (101) can be opened outward, so that the locking boss (103) is disengaged from the locking hole (15) of the brush module assembly (2).

2. The brush structure of the conductive slip ring according to claim 1, characterized in that, The annular groove (11) of the rotating part (3) has a rectangular cross-section, rounded corners at the groove opening, and a copper alloy conductive layer on the inner sidewall of the groove.

3. The brush structure of the conductive slip ring according to claim 1, characterized in that, The buckle base (9) is fixed to the end face of the front and rear fixing parts (4) by screws (16). Two guide holes (51) are opened on the lower side of the insulating body (5). Two guide sleeves are fixedly connected to the upper side of the front and rear fixing parts (4). The two guide sleeves are adapted to the two guide holes (51) respectively, and the guide holes (51) are at different heights to form an anti-misoperation structure.

4. The brush structure of the conductive slip ring according to claim 1, characterized in that, The elastic buckle (10) is made of spring steel sheet, and the locking boss (103) is semi-circular and is interference-fitted with the locking hole (15) on the side of the brush module assembly (2) with an interference amount of 0.1-0.2mm.

5. The brush structure of the conductive slip ring according to claim 1, characterized in that, The unlocking handle (14) has an L-shaped structure. A spherical grip section is fixedly connected to the upper end of the unlocking handle (14), and the surface of the grip section is provided with a knurled anti-slip structure.

6. The brush structure of the conductive slip ring according to claim 1, characterized in that, The U-shaped deformation groove (104) has a depth of 4-6mm and is suitable for quick assembly and disassembly under normal temperature conditions.

7. The brush structure of the conductive slip ring according to claim 1, characterized in that, The quick-release buckle assembly (8) also includes a magnetic auxiliary structure (17), which includes a magnet (171) located on the outside of the top horizontal piece (102) and an iron piece (172) located at the corresponding position of the buckle base (9) to assist the elastic buckle (10) in resetting.

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