Carbon brush device for motor

Abstract

The utility model discloses a carbon brush device for a motor, which relates to the technical field of motors, and is characterized in that the carbon brush device comprises a motor rear cover, the right side of the motor rear cover is fixedly connected with a transmission case, sliding frames are arranged on the two sides of the interior of the motor rear cover, and limiting rods are inserted into the inner walls of the front side and the rear side of each sliding frame; a fixing frame is fixedly connected to the inner end of the limiting rod, a spring is fixedly connected to the position, located on the outer ring of the limiting rod, between the sliding frame and the fixing frame, a carbon brush body is arranged on the inner side of the fixing frame, an adjusting mechanism is arranged in the transmission box, and a clamping mechanism is arranged in the fixing frame. The beneficial effects are that spacing adjustment and rapid clamping of the carbon brush bodies are realized, and adjustability and convenience of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and more particularly to a carbon brush device for a motor. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. Carbon brushes are primarily used to transfer current from an external power source to the motor's rotating components. In a DC motor, for example, the carbon brushes are in close contact with the commutator, a rotating component mounted on the motor's rotor shaft. The commutator consists of multiple insulated copper plates. When the motor is running, the carbon brushes slide across the commutator's surface, introducing DC power into the rotor windings. This ensures that the current in the rotor windings changes direction at the appropriate time, thereby maintaining continuous and stable motor rotation.

[0003] Existing devices primarily use a fixed elastic component to push the carbon brushes into close contact with the commutator. The prior art is similar to a device for assembling motor carbon brushes. Publication No. CN214755983U includes a core-changing shaft with an intermediate body disposed on the outside of the shaft. A spring is disposed at the bottom of the shaft, and the shaft is elastically and slidably connected to the intermediate body via the spring. A clamp is disposed on the lower end surface of the shaft, and a fixing screw is disposed on the clamp. This utility model addresses the difficulty of assembling existing devices during assembly, requiring the use of a temporary plastic round core for transition, which wastes resources. However, the device still has room for improvement.

[0004] The existing device mainly places the carbon brush on the elastic component, which makes it difficult for some devices to adjust the position of the carbon brush body according to the thickness of the carbon brush body, making it inconvenient for the carbon brush body to stably fit on the outer wall of the rotor. At the same time, the carbon brush is easily worn as a sliding contact part, making it difficult for some devices to quickly install and replace the carbon brush body, which makes it inconvenient to maintain the motor and reduce the working efficiency and practicality of the device. Therefore, in order to solve the above technical problems, the present application proposes a carbon brush device for a motor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a carbon brush device for a motor.

[0006] To achieve the above object, the utility model provides the following technical solution: a motor rear cover, wherein the right side of the motor rear cover is fixedly connected to a transmission box, sliding frames are provided on both sides of the interior of the motor rear cover, limiting rods are inserted into the inner walls of the front and rear sides of the sliding frame, the inner ends of the limiting rods are fixedly connected to a fixing frame, a spring is fixedly connected to the outer ring of the limiting rod between the sliding frame and the fixing frame, and a carbon brush body is provided on the inner side of the fixing frame;

[0007] An adjustment mechanism is provided inside the transmission box, and the adjustment mechanism includes a transmission worm. Both ends of the transmission worm are movably connected to the inner wall of the transmission box. A clamping mechanism is provided inside the fixing frame, and the clamping mechanism includes a guide rod. The top end of the guide rod is fixedly connected to the front and rear sides of the top of the fixing frame.

[0008] Preferably, a second bevel gear is fixedly connected to the middle of the outer wall of the transmission worm, and transmission worm wheels are meshedly connected to both sides of the outer wall of the transmission worm.

[0009] Preferably, the second bevel gear is meshedly connected with the first bevel gear above, the top middle of the first bevel gear is fixedly connected with a transmission shaft, and the top end of the transmission shaft passes through the transmission box and is fixedly connected with a twist cover.

[0010] Preferably, a symmetrical screw is fixedly connected to the inner wall of the transmission worm gear, the right end of the symmetrical screw is movably connected to the right side of the inner wall of the transmission box, and the left end of the symmetrical screw passes through the right side wall of the motor rear cover and is movably connected to the left side of the inner wall of the motor rear cover.

[0011] Preferably, both sides of the outer wall of the symmetrical screw are threadedly connected with push screw sleeves, and the outer walls of the push screw sleeves are fixedly connected to the front and rear sides of the sliding frame.

[0012] Preferably, a sleeve is sleeved below the outer wall of the guide rod, and the outer wall of the sleeve is fixedly connected to the front and rear sides of the carbon brush body.

[0013] Preferably, a pair of spring plates are fixedly connected to the middle of the top of the fixing frame, a clamping piece is provided between the pair of spring plates, and the clamping piece is fixedly connected to the middle of the outer side of the carbon brush body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the utility model, by adjusting the transmission worm, the second bevel gear, the transmission worm wheel, the first bevel gear, the transmission shaft, the twist cover, the symmetrical screw and the push screw sleeve and other structures in the mechanism, by rotating the twist cover, the twist cover drives the transmission shaft to rotate in a limited position, the transmission shaft drives the first bevel gear to rotate synchronously, the first bevel gear engages to drive the second bevel gear to rotate, the second bevel gear drives the transmission worm to rotate in a limited position, the transmission worm engages to drive the transmission worm wheel to rotate synchronously, the transmission worm wheel drives the symmetrical screw to rotate in a limited position, and the symmetrical screw drives the push screw sleeve and the sliding frame to slide symmetrically, thereby realizing the adjustment of the spacing between the carbon brush bodies, so that some devices can adjust the position of the carbon brush body according to the thickness of the carbon brush body, so that the carbon brush body can be stably fitted on the outer wall of the rotor, thereby improving the adjustability and practicality of the device.

[0016] 2. In the utility model, through the guide rod, sleeve, spring piece and clamping member in the clamping mechanism, the carbon brush body drives the sleeve to be sleeved on the outer wall of the guide rod of the fixed frame, and the carbon brush body drives the clamping member to be inserted between a pair of spring pieces, thereby realizing the rapid clamping of the carbon brush body, so that some devices can quickly load and unload and replace the carbon brush body, which is convenient for maintenance operations on the motor and improves the convenience and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a frontal upward perspective view of the structure of the present invention;

[0019] Figure 2 This is a top-view cross-sectional perspective view of the structure of the present utility model;

[0020] Figure 3 This is a front cross-sectional perspective view of the partial structure of the rear cover and the adjustment mechanism of the utility model;

[0021] Figure 4 This is a front sectional perspective view of the partial structure of the fixing frame and the clamping mechanism of the present invention.

[0022] 11. Motor rear cover; 12. Transmission box; 13. Sliding frame; 14. Limit rod; 15. Fixed frame; 16. Spring; 17. Carbon brush body; 2. Adjustment mechanism; 21. Transmission worm; 22. Second bevel gear; 23. Transmission worm wheel; 24. First bevel gear; 25. Transmission shaft; 26. Twist cover; 27. Symmetrical screw; 28. Push nut; 3. Clamping mechanism; 31. Guide rod; 32. Sleeve; 33. Shrapnel; 34. Clamp. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, the utility model provides a carbon brush device for a motor, comprising a motor rear cover 11, a transmission box 12 fixedly connected to the right side of the motor rear cover 11, sliding frames 13 provided on both sides of the interior of the motor rear cover 11, limiting rods 14 inserted into the inner walls of the front and rear sides of the sliding frame 13, the inner end of the limiting rod 14 fixedly connected to a fixing frame 15, a spring 16 fixedly connected to the outer ring of the limiting rod 14 between the sliding frame 13 and the fixing frame 15, and a carbon brush body 17 provided on the inner side of the fixing frame 15;

[0024] The interior of the transmission case 12 is provided with an adjusting mechanism 2, which includes a transmission worm 21. Both ends of the transmission worm 21 are movably connected to the inner wall of the transmission case 12. The middle part of the outer wall of the transmission worm 21 is fixedly connected to a second bevel gear 22. Both sides of the outer wall of the transmission worm 21 are meshed with a transmission worm wheel 23. Through this design, the second bevel gear 22 drives the transmission worm 21 to rotate in a limited manner, so that the transmission worm 21 meshes and drives the transmission worm wheel 23 to rotate synchronously. The top of the second bevel gear 22 is meshed with a first bevel gear 24, and the top middle of the first bevel gear 24 is fixedly connected with a transmission shaft 25. The top of the transmission shaft 25 passes through the transmission case 12 and is fixedly connected with a twist cover 26. Through this design, the twist cover 26 drives the transmission shaft 25 and the first bevel gear 24. The gear 24 is limited to rotate, so that the first bevel gear 24 engages and drives the second bevel gear 22 to rotate. The inner wall of the transmission worm gear 23 is fixedly connected with a symmetrical screw 27, and the right end of the symmetrical screw 27 is movably connected to the right side of the inner wall of the transmission box 12. The left end of the symmetrical screw 27 passes through the right side wall of the motor rear cover 11 and is movably connected to the left side of the inner wall of the motor rear cover 11. Through this design, the transmission worm gear 23 drives the symmetrical screw 27 to limit rotation, and the outer walls of the symmetrical screw 27 are threadedly connected with push screw sleeves 28 on both sides. The outer walls of the push screw sleeve 28 are fixedly connected to the front and rear sides of the sliding frame 13. Through this design, the symmetrical screw 27 drives the push screw sleeve 28 and the sliding frame 13 to slide symmetrically, so that the sliding frame 13 drives the inner wall of the carbon brush body 17 to be close to the outer wall of the commutator.

[0025] A clamping mechanism 3 is provided inside the fixing frame 15, and the clamping mechanism 3 includes a guide rod 31, the top of the guide rod 31 is fixedly connected to the front and rear sides of the top of the fixing frame 15, and a sleeve 32 is sleeved under the outer wall of the guide rod 31. The outer wall of the sleeve 32 is fixedly connected to the front and rear sides of the carbon brush body 17. Through this design, the carbon brush body 17 is aligned and clamped on the inner side of the fixing frame 15. A pair of spring plates 33 are fixedly connected to the middle of the top of the fixing frame 15, and a clamping member 34 is provided between the pair of spring plates 33. The clamping member 34 is fixedly connected to the middle part of the outer side of the carbon brush body 17. Through this design, the carbon brush body 17 is clamped on the fixing frame 15, which is convenient for quick assembly and replacement of the carbon brush body 17.

[0026] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A carbon brush device for a motor, comprising a motor rear cover (11), characterized in that: The right side of the motor rear cover (11) is fixedly connected to a transmission box (12), and sliding frames (13) are provided on both sides of the interior of the motor rear cover (11). Limiting rods (14) are inserted into the inner walls of the front and rear sides of the sliding frame (13), and the inner end of the limiting rod (14) is fixedly connected to a fixing frame (15). A spring (16) is fixedly connected to the outer ring of the limiting rod (14) between the sliding frame (13) and the fixing frame (15), and a carbon brush body (17) is provided on the inner side of the fixing frame (15); An adjusting mechanism (2) is provided inside the transmission box (12), the adjusting mechanism (2) includes a transmission worm (21), both ends of the transmission worm (21) are movably connected to the inner wall of the transmission box (12), and a clamping mechanism (3) is provided inside the fixing frame (15), the clamping mechanism (3) includes a guide rod (31), and the top end of the guide rod (31) is fixedly connected to the front and rear sides of the top of the fixing frame (15).

2. A carbon brush device for a motor according to claim 1, characterized in that: A second bevel gear (22) is fixedly connected to the middle of the outer wall of the transmission worm (21), and transmission worm wheels (23) are meshedly connected to both sides of the outer wall of the transmission worm (21).

3. A carbon brush device for a motor according to claim 2, characterized in that: The upper portion of the second bevel gear (22) is meshedly connected with the first bevel gear (24), the middle portion of the top portion of the first bevel gear (24) is fixedly connected with a transmission shaft (25), and the top end of the transmission shaft (25) passes through the transmission box (12) and is fixedly connected with a twist cover (26).

4. A carbon brush device for a motor according to claim 2, characterized in that: A symmetrical screw rod (27) is fixedly connected to the inner wall of the transmission worm wheel (23), the right end of the symmetrical screw rod (27) is movably connected to the right side of the inner wall of the transmission box (12), and the left end of the symmetrical screw rod (27) passes through the right side wall of the motor rear cover (11) and is movably connected to the left side of the inner wall of the motor rear cover (11).

5. A carbon brush device for a motor according to claim 4, characterized in that: Both sides of the outer wall of the symmetrical screw (27) are threadedly connected with a push screw sleeve (28), and the outer wall of the push screw sleeve (28) is fixedly connected to the front and rear sides of the sliding frame (13).

6. The carbon brush device for a motor according to claim 1, characterized in that: A sleeve (32) is sleeved below the outer wall of the guide rod (31), and the outer wall of the sleeve (32) is fixedly connected to the front and rear sides of the carbon brush body (17).

7. The carbon brush device for a motor according to claim 1, characterized in that: A pair of spring plates (33) are fixedly connected to the middle of the top of the fixing frame (15), a clamping member (34) is provided between the pair of spring plates (33), and the clamping member (34) is fixedly connected to the middle of the outer side of the carbon brush body (17).

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