Slip ring with stable performance
By adjusting the brush beam angle of the slip ring, increasing the number of brush wires, and using conductive grease, the problems of unstable slip ring signal transmission and copper ring wear are solved, achieving more stable signal transmission and extending the service life of the slip ring.
Patent Information
- Application Number
- CN202422384088.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The brush beam angle of the existing slip ring brush holder will lead to too small brush pressure, unstable signal transmission, and the surface plating of copper ring materials is easily worn, affecting service life.
By modifying the brush beam angle of the brush holder to 48.5 degrees ± 0.5 degrees, and increasing the number of brush wires to no less than 12, combined with the use of conductive grease, the contact stability between the brush wire and the conductive copper ring is improved and friction is reduced.
Improves the stability and consistency of signal transmission, extends the service life of conductive copper rings, and ensures the reliability and durability of the connection.
Smart Images
Figure CN223167836U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of slip rings, and particularly relates to a slip ring with stable performance. Background Art
[0002] A slip ring, also known as a rotary electrical interface or an electrical rotary joint, can be used in any system that requires the transmission of power and data signals from a fixed structure to a rotating structure during unrestricted continuous rotation. It is often used in electromechanical systems that require unrestricted, continuous or intermittent rotation for the transmission of power and data signals, which can simplify and improve system performance without damaging the wires.
[0003] The main structure of the existing slip ring is composed of a ring body, a brush bundle, a slip ring bracket, and a bearing. When the slip ring is working, the ring body and the brush bundle maintain sliding contact to achieve the transmission of signals and power. Since the large angle of the brush bundle of the brush holder will lead to too small brush pressure, it will cause fluctuations in signal transmission, instability, and the surface coating of the copper ring material is easily worn, resulting in unstable contact and relatively short service life of the product. Summary of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a slip ring with stable performance, which aims to solve the problems that the large angle of the brush bundle of the brush holder of the existing slip ring will lead to too small brush pressure, resulting in fluctuations and instability in signal transmission.
[0006] (2) Technical Solutions
[0007] To solve the above technical problems, the utility model provides such a slip ring with stable performance. The slip ring includes a stator, an installation groove is opened on the left side of the stator, a rotor is rotatably connected to the inside of the installation groove through a bearing, a plurality of conductive copper rings are fixedly connected to the outer surface of the rotor, a long hole communicating with the installation groove is opened on the outer surface of the stator, a brush holder is arranged between the left and right inner walls of the long hole, a plurality of brush bundles corresponding to the conductive copper rings are installed on the lower surface of the brush holder, the angle between the brush bundle and the conductive copper ring is 48 - 49 degrees, and the number of brush wires of the brush bundle is not less than 12.
[0008] Preferably, conductive grease is provided between the brush bundle and the conductive copper ring.
[0009] Furthermore, a plurality of annular grooves are opened on the outer surface of the rotor, the conductive copper rings are fixedly connected to the inside of the annular grooves, and the conductive grease is filled in the annular grooves.
[0010] Even further, a first wiring terminal is fixedly connected to the right side of the stator, and a plurality of the brush bundles are electrically connected to the first wiring terminal.
[0011] Further, a plurality of second connection terminals are fixedly connected to the left side of the rotor, and the plurality of second connection terminals are electrically connected to a plurality of conductive copper rings respectively.
[0012] Further, two fixing seats are fixedly connected between the inner walls on the left and right sides of the long hole, a fixing plate is fixedly connected between the two fixing seats, sliding rods are fixedly connected to both the left and right sides of the brush holder, threaded cylinders are threadedly connected to both the left and right sides of the fixing plate, the front surfaces of the sliding rods penetrate through the threaded cylinders and are fixedly connected with limiting blocks, the sliding rods are slidably connected with the threaded cylinders, springs are sleeved on the outer surfaces of the sliding rods, one ends of the springs are in contact with the threaded cylinders, and the other ends of the springs are in contact with the brush holder.
[0013] Further, a cover plate is fixedly connected to the long hole through screws, and a sealing gasket is arranged between the cover plate and the stator.
[0014] Beneficial effects
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] By modifying the brush bundle angle on the signal terminal brush holder of the present utility model to 48.5 degrees ± 0.5, and at the same time increasing the number of brush wires in the brush bundle to ≥ 12, about 13 when full, the connection contacts between the brush bundle and the end face of the conductive copper ring can be made more stable and reliable by changing the angle of the brush bundle and the number of brush wires, thereby improving the stability and consistency in signal transmission.
[0017] By applying conductive grease to all of the annular grooves where the conductive copper rings are installed in the present utility model, the conductive grease can make the electrical conductivity of the contacts between the brush wires and the conductive copper rings better at this time, and at the same time its lubricating effect reduces the friction between the conductive copper rings and the brush wires during rotation, thereby extending the service life of the conductive copper rings. Description of the drawings
[0018] Figure 1 is the left - view three - dimensional structure schematic diagram of the present utility model.
[0019] Figure 2 is the right - view top - view structure schematic diagram of the present utility model.
[0020] Figure 3 is the right - view sectional structure schematic diagram of the present utility model.
[0021] Figure 4 is the Figure 3 enlarged structure schematic diagram at position A in the present utility model.
[0022] Figure 5 is the three - dimensional structure schematic diagram of the rotor of the present utility model.
[0023] The reference numerals in the drawings are: 1, stator; 2, mounting groove; 3, rotor; 4, conductive copper ring; 5, long hole; 6, brush holder; 7, brush bundle; 8, conductive grease; 9, fixed seat; 10, fixing plate; 11, slide bar; 12, limit block; 13, spring; 14, threaded cylinder; 101, first terminal; 301, annular groove; 302, second terminal; 15, screw; 16, cover plate. Detailed implementation mode
[0024] This detailed implementation mode is a slip ring with stable performance, and its structural schematic diagram is as Figures 1 - 5 shown. The slip ring includes a stator 1. An installation groove 2 is formed on the left side of the stator 1. A rotor 3 is rotatably connected to the inside of the installation groove 2 through a bearing. A plurality of conductive copper rings 4 are fixedly connected to the outer surface of the rotor 3. A long hole 5 communicating with the installation groove 2 is formed on the outer surface of the stator 1. A brush holder 6 is arranged between the left and right inner walls of the long hole 5. A plurality of brush bundles 7 corresponding to the conductive copper rings 4 are installed on the lower surface of the brush holder 6. The angle between the brush bundle 7 and the conductive copper ring 4 is 48 - 49 degrees, preferably 48.5 degrees. The number of brush wires of the brush bundle 7 is not less than 12. Such a setting can make the connection contacts between the brush bundle 7 and the end face of the conductive copper ring 4 more stable and reliable by changing the angle of the brush bundle 7 and the number of brush wires, thereby improving the stability and consistency in signal transmission. Before solving, the fluctuation value would continuously jump between numbers. After solving, the fluctuation value is consistently stable within 1 mΩ.
[0025] As Figure 4 and Figure 5 shown: In this embodiment, conductive grease 8 is arranged between the brush bundle 7 and the conductive copper ring 4. A plurality of annular grooves 301 are formed on the outer surface of the rotor 3. The conductive copper ring 4 is fixedly connected to the inside of the annular groove 301. The conductive grease 8 is filled in the annular groove 301.
[0026] Such a setting of the conductive grease 8 can make the electrical conductivity of the contact between the brush wire and the conductive copper ring 4 better. At the same time, its lubricating effect reduces the friction between the conductive copper ring 4 and the brush wire during rotation, thereby prolonging the service life of the conductive copper ring 4.
[0027] As Figure 2 and Figure 3 shown: In this embodiment, a first terminal 101 is fixedly connected to the right side of the stator 1. A plurality of brush bundles 7 are all electrically connected to the first terminal 101.
[0028] Such a setting enables the first terminal 101 to be connected to an external power supply during use, and signals and power are transmitted through the contact between the brush bundle 7 and the conductive copper ring 4.
[0029] As Figure 1 and Figure 5As shown: In this embodiment, a plurality of second terminal posts 302 are fixedly connected to the left side of the rotor 3, and the plurality of second terminal posts 302 are respectively electrically connected to a plurality of conductive copper rings 4.
[0030] The second terminal posts 302 are arranged in this way to be connected to the using device. The rotor 3 rotates within the stator 1, and signal and power transmission are carried out through the contact between the brush bundle 7 and the conductive copper ring 4.
[0031] Such as Figure 2 、 Figure 3 and Figure 4 As shown: In this embodiment, two fixed seats 9 are fixedly connected between the inner walls on the left and right sides of the long hole 5, a fixing plate 10 is fixedly connected between the two fixed seats 9, sliding rods 11 are fixedly connected to both the left and right sides of the brush holder 6, threaded cylinders 14 are threadedly connected to both the left and right sides of the fixing plate 10, the front surface of the sliding rod 11 penetrates through the threaded cylinder 14 and is fixedly connected with a limiting block 12, the sliding rod 11 is slidably connected with the threaded cylinder 14, a spring 13 is sleeved on the outer surface of the sliding rod 11, one end of the spring 13 contacts the threaded cylinder 14, and the other end of the spring 13 contacts the brush holder 6.
[0032] Arranged in this way, the restoring force of the spring 13 can drive the sliding rod 11 on the brush holder 6 to slide along the threaded cylinder 14. At this time, the brush bundle 7 on the brush holder 6 can contact the conductive copper ring 4 well. At the same time, rotating the threaded cylinder 14 can adjust the elastic force of the spring 13, thereby increasing the contact pressure between the brush bundle 7 on the brush holder 6 and the conductive copper ring 4, and better stabilizing the signal transmission.
[0033] Such as Figure 1 and Figure 2 As shown: In this embodiment, a cover plate 16 is fixedly connected to the long hole 5 through screws 15, and a sealing gasket is arranged between the cover plate 16 and the stator 1. Arranged in this way, the long hole 5 is blocked, and the sealing gasket is provided to prevent dust from entering the interior of the stator.
[0034] Working principle: By modifying the angle of the brush bundle 7 on the signal terminal brush holder 6 to 48.5 degrees ± 0.5, and at the same time increasing the number of brush wires of the brush bundle 7 to ≥ 12, about 13 when full, the connection contacts between the brush bundle 7 and the end face of the conductive copper ring 4 can be made more stable and reliable by changing the angle of the brush bundle 7 and the number of brush wires, thereby improving the stability and consistency in signal transmission. By applying conductive grease 8 to all of the annular groove 301 where the conductive copper ring 4 is installed, at this time, the conductive grease 8 can make the electrical conductivity of the contact between the brush wires and the conductive copper ring 4 better, and at the same time, its lubricating effect reduces the friction between the conductive copper ring 4 and the brush wires during rotation, thereby extending the service life of the conductive copper ring 4.
[0035] All the technical features in this embodiment can be freely combined according to actual needs.
[0036] The above embodiments are the preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.
Claims
1. A slip ring with stable performance, the slip ring comprising a stator (1), characterized in that: An installation groove (2) is provided on the left side of the stator (1). A rotor (3) is rotatably connected inside the installation groove (2) through a bearing. A plurality of conductive copper rings (4) are fixedly connected to the outer surface of the rotor (3). A long hole (5) communicating with the installation groove (2) is provided on the outer surface of the stator (1). A brush holder (6) is arranged between the inner walls on the left and right sides of the long hole (5). A plurality of brush bundles (7) corresponding to the conductive copper rings (4) are installed on the lower surface of the brush holder (6). The angle between the brush bundles (7) and the conductive copper rings (4) is 48 - 49 degrees, and the number of brush wires of the brush bundles (7) is not less than 12.
2. The slip ring with stable performance according to claim 1, wherein, A conductive grease (8) is provided between the brush bundles (7) and the conductive copper rings (4).
3. The slip ring with stable performance according to claim 2, wherein A plurality of annular grooves (301) are provided on the outer surface of the rotor (3). The conductive copper rings (4) are fixedly connected inside the annular grooves (301). The conductive grease (8) is filled inside the annular grooves (301).
4. The slip ring with stable performance according to claim 1, characterized in that, A first terminal (101) is fixedly connected to the right side of the stator (1). A plurality of the brush bundles (7) are all electrically connected to the first terminal (101).
5. The slip ring with stable performance according to claim 4, wherein A plurality of second terminals (302) are fixedly connected to the left side of the rotor (3). The plurality of second terminals (302) are respectively electrically connected to the plurality of conductive copper rings (4).
6. The slip ring with stable performance according to claim 5, wherein, Two fixing seats (9) are fixedly connected between the inner walls on the left and right sides of the long hole (5). A fixing plate (10) is fixedly connected between the two fixing seats (9). Slide rods (11) are fixedly connected to both the left and right sides of the brush holder (6). Threaded cylinders (14) are threadedly connected to both the left and right sides of the fixing plate (10). The front surface of the slide rod (11) penetrates through the threaded cylinder (14) and is fixedly connected with a limit block (12). The slide rod (11) is slidably connected with the threaded cylinder (14). A spring (13) is sleeved on the outer surface of the slide rod (11). One end of the spring (13) contacts the threaded cylinder (14), and the other end of the spring (13) contacts the brush holder (6).
7. The slip ring with stable performance according to claim 6, wherein, A cover plate (16) is fixedly connected to the long hole (5) through a screw (15). A gasket is provided between the cover plate (16) and the stator (1).