Wear-resistant motor brush holder assembly

Abstract

The utility model relates to the technical field of motors, and discloses a wear-resistant motor brush holder assembly which comprises a brush plate, a first brush holder seat is arranged on the left side of the front end of the brush plate, a second brush holder seat is arranged on the right side of the front end of the brush plate, and compression springs are arranged on the left side of the interior of the first brush holder seat and the right side of the interior of the second brush holder seat respectively. Brush bodies are fixed to the right side of the compression spring on the left side and the left side of the compression spring on the right side correspondingly. When the wear-resistant motor brush holder assembly is used, the cover plate can be arranged on the four groups of fixing feet at the front end of the brush plate, and then connecting bolts penetrate through the interiors of the reserved holes and are correspondingly screwed into the threaded holes, so that the cover plate can be mounted and fixed at the front end of the brush plate; the front end of the brush plate can be subjected to auxiliary outer cover anti-abrasion protection through the arranged cover plate, the outer abrasion of the electric brush assembly is reduced, the electric brush assembly is resistant to use abrasion, and the problem that the outer portion of the motor brush carrier is inconvenient to be subjected to anti-abrasion protection is solved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a wear-resistant motor brush holder assembly. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It mainly uses an energized coil to generate a rotating magnetic field, which acts on the rotor to form magnetoelectric torque. Brushes are an important component of an electric motor, responsible for conducting current between rotating and stationary parts. They are usually made of graphite and are therefore also called carbon brushes. During the installation process, in order to ensure that the brushes are accurately positioned on the commutator inside the motor and to ensure full and tight contact between the brushes and the commutator, a special motor brush holder assembly is required to assist in the installation of the brushes.

[0003] However, during use, the exterior of the motor brush holder assembly is generally exposed after processing. During transportation, installation and use, the exterior of the motor brush holder assembly is easily scratched and rubbed by external objects, resulting in excessive wear and affecting the use of the motor brush holder. This is a shortcoming and makes it inconvenient to protect the exterior of the motor brush holder from wear.

[0004] Now, a novel wear-resistant motor brush holder assembly is proposed to address the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a wear-resistant motor brush holder assembly to solve the problem mentioned in the background art of inconvenience in protecting the exterior of the motor brush holder from wear.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant motor brush holder assembly, including a brush plate, a brush holder seat one is provided on the left side of the front end of the brush plate, a brush holder seat two is provided on the right side of the front end of the brush plate, compression springs are respectively provided on the left side inside the brush holder one and the right side inside the brush holder two, and a brush body is fixedly attached to the right side of the left compression spring and the left side of the right compression spring, an opening is provided at the middle position of the front end of the brush plate, and a wear-resistant structure for wear protection of the brush holder assembly is provided at the front end of the brush plate;

[0007] The wear-resistant structure includes fixed feet, threaded holes, connecting bolts, a washer, reserved holes, and a reserved opening. Fixed feet are fixed on both sides of the top and bottom of the front end of the brush plate, and threaded holes are opened inside the front end of the fixed feet. A cover plate is provided at the front end of the brush plate, and reserved holes are opened on both sides of the top and bottom of the front end of the cover plate. A reserved opening is opened at the middle position of the front end of the cover plate. A connecting bolt is inserted into the reserved hole, and a washer is sleeved on the outside of the connecting bolt.

[0008] Furthermore, the reserved opening penetrates the interior of the cover plate and communicates with the interior of the opening.

[0009] Furthermore, the rear end of the connecting bolt passes through the interior of the reserved hole and is rotatably connected to the threaded hole.

[0010] Preferably, the inside of the left side of the brush holder one and the inside of the right side of the brush holder two are respectively provided with screw holes, and the inside of the screw holes is threaded with a screw rod. The left side of the inside of the brush holder one and the right side of the inside of the brush holder two are respectively provided with abutment plates. A rotating handle is fixed on the screw rod, and the abutment plate is fixedly connected to a compression spring.

[0011] Furthermore, the screw passes through the interior of the screw hole and is movably connected to one side of the abutment plate.

[0012] Preferably, two screw rods are fixed to both sides of the rear end of the brush holder one and the brush holder two, two sets of insertion holes are opened inside the front end of the brush plate, and mounting nuts are provided on both sides of the rear end of the brush plate, and a washer is provided at the rear end of the mounting nuts.

[0013] Furthermore, the second screw passes through the interior of the insertion hole and the second washer, and the mounting nut is rotatably connected to the outside of the second screw.

[0014] Preferably, the top and bottom of the brush holder base one and the brush holder base two are respectively fixed with wiring plates, and the front end of the brush holder base one and the brush holder base two are respectively provided with slots.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the wear-resistant motor brush holder assembly not only facilitates wear protection of the outside of the motor brush holder and facilitates adjustment of the pressure of the brush assembly inside the brush holder, but also facilitates the replacement of the brush holder assembly.

[0016] With a brush plate, fixing feet, threaded holes, cover plate, connecting bolts, gasket, reserved holes, and reserved openings, the motor brush holder assembly can be used by placing the cover plate on the four sets of fixing feet at the front end of the brush plate. Then, the connecting bolts are inserted through the reserved holes and screwed into the corresponding threaded holes to install and fix the cover plate on the front end of the brush plate. The cover plate can provide auxiliary outer protection for the front end assembly of the brush holder, reducing external wear of the brush assembly and making it more resistant to wear during use.

[0017] The motor brush holder assembly is installed inside the motor by setting up a brush plate, a brush holder seat 1, a brush holder seat 2, a brush body, a compression spring, a screw 1, and a stop plate. After the brush body is pressed against the outside of the commutator, the screw 1 can be driven to rotate by rotating the handle on the left side of the brush holder seat 1 and the right side of the brush holder seat 2. As the screw 1 rotates in the screw hole, it drives the stop plate to move inward. By shortening the length of the compression spring, the elastic force of the compression spring can be increased, which in turn increases the pressure of the brush body on the commutator, ensuring a tight contact between the brush and the commutator.

[0018] The brush holder assembly is equipped with a brush plate, brush holder seat 1, brush holder seat 2, insertion hole, mounting nut, washer 2, and screw 2. When replacing or maintaining the motor brush holder assembly, after removing the brush holder from inside the motor, the mounting nuts can be unscrewed from the outside of screw 2 on both sides of the rear end of the brush plate. This allows for quick separation and removal of brush holder seat 1 and brush holder seat 2 from the brush plate, facilitating convenient replacement of the brush holder assembly. Attached Figure Description

[0019] Figure 1 This is a frontal cross-sectional view of the present invention.

[0020] Figure 2 This is a partial cross-sectional view of the brush plate of this utility model.

[0021] Figure 3 This is a top view of the cover plate structure of this utility model;

[0022] Figure 4 This is a front view structural diagram of the backing plate of this utility model.

[0023] In the diagram: 1. Fixed foot; 2. Brush plate; 3. Wiring board; 4. Brush holder seat one; 5. Slot; 6. Compression spring; 7. Threaded hole; 8. Opening; 9. Brush body; 10. Cover plate; 11. Connecting bolt; 12. Washer one; 13. Insertion hole; 14. Mounting nut; 15. Washer two; 16. Support plate; 17. Screw one; 18. Reserved hole; 19. Reserved opening; 20. Rotary handle; 21. Screw hole; 22. Brush holder seat two; 23. Screw two. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4An embodiment of this utility model is provided: a wear-resistant motor brush holder assembly, including a brush plate 2, a brush holder seat 4 is provided on the left side of the front end of the brush plate 2, a brush holder seat 22 is provided on the right side of the front end of the brush plate 2, compression springs 6 are respectively provided on the left side inside the brush holder seat 4 and the right side inside the brush holder seat 22, a brush body 9 is respectively fixed on the right side of the left compression spring 6 and the left side of the right compression spring 6, an opening 8 is provided at the middle position of the front end of the brush plate 2, and a wear-resistant structure for wear-resistant protection of the brush holder assembly is provided at the front end of the brush plate 2.

[0026] The anti-wear structure includes a fixed foot 1, a threaded hole 7, a connecting bolt 11, a washer 12, a reserved hole 18, and a reserved opening 19. Fixed feet 1 are fixed on both sides of the top and bottom of the front end of the brush plate 2, and the threaded hole 7 is opened inside the front end of the fixed foot 1. A cover plate 10 is provided at the front end of the brush plate 2, and the reserved holes 18 are opened on both sides of the top and bottom of the front end of the cover plate 10. A reserved opening 19 is opened at the middle position of the front end of the cover plate 10. A connecting bolt 11 is inserted into the reserved hole 18, and a washer 12 is sleeved on the outside of the connecting bolt 11. The reserved opening 19 penetrates the interior of the cover plate 10 and communicates with the interior of the opening 8. The rear end of the connecting bolt 11 penetrates the interior of the reserved hole 18 and is rotatably connected in the threaded hole 7.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, the cover plate 10 can be placed on the four sets of fixing feet 1 at the front end of the brush plate 2. Then, the connecting bolt 11 is passed through the interior of the reserved hole 18 and screwed into the threaded hole 7. The cover plate 10 can be installed and fixed on the front end of the brush plate 2. The cover plate 10 can provide auxiliary anti-wear protection for the front end component of the brush holder during transportation, installation and use, and reduce the wear on the outside of the brush assembly.

[0028] Screw holes 21 are provided on the inside of the left side of brush holder 4 and the inside of the right side of brush holder 22, and screw rod 17 is threadedly connected to the inside of screw hole 21. Abutment plate 16 is provided on the left side of the inside of brush holder 4 and the right side of the inside of brush holder 22. A handle 20 is fixed on screw rod 17. Abutment plate 16 is fixedly connected to compression spring 6. Screw rod 17 passes through the inside of screw hole 21 and is movably connected to one side of abutment plate 16.

[0029] Specifically, such as Figure 1 and Figure 3As shown, when the brush body 9 is used against the outside of the commutator, the screw 17 can be driven to rotate by rotating the handle 20 on the left side of the brush holder 4 and the right side of the brush holder 22. While the screw 17 rotates in the screw hole 21, it drives the abutment plate 16 to move inward. By shortening the length of the compression spring 6, the elastic force of the compression spring 6 can be increased, thereby increasing the pressure of the brush body 9 on the commutator and ensuring close contact between the brush and the commutator.

[0030] Screw 23 is fixed on both sides of the rear end of brush holder 1 4 and brush holder 2 22 respectively. Two sets of insertion holes 13 are opened on the inside of the front side of the brush plate 2 respectively. Mounting nuts 14 are provided on both sides of the rear end of the brush plate 2 respectively, and washer 25 is provided at the rear end of the mounting nuts 14. Screw 23 passes through the inside of insertion holes 13 and washer 25 respectively. Mounting nuts 14 are rotatably connected to the outside of screw 23.

[0031] Specifically, such as Figure 1 and Figure 4 As shown, when replacing and maintaining the motor brush holder assembly, after removing the brush holder from the inside of the motor, the mounting nuts 14 can be unscrewed from the outside of the screw 23 on both sides of the rear end of the brush plate 2, and the brush holder seat 1 4 and the brush holder seat 2 22 can be quickly separated from the brush plate 2, allowing for convenient replacement of the brush holder assembly.

[0032] A wiring plate 3 is fixed to the top and bottom of brush holder 4 and brush holder 22 respectively, and a slot 5 is opened in the front end of brush holder 4 and brush holder 22 respectively.

[0033] Working principle: When installing and using the motor brush holder assembly of this utility model, the cover plate 10 can be placed on the four sets of fixing feet 1 at the front end of the brush plate 2. Then, the connecting bolts 11 are inserted through the reserved holes 18 and screwed into the corresponding threaded holes 7, thus fixing the cover plate 10 to the front end of the brush plate 2. The cover plate 10 can provide auxiliary outer cover protection against wear for the front end of the brush plate 2. At the same time, the motor brush holder assembly is installed inside the motor. After the brush body 9 abuts against the outside of the commutator, the drive screw 17 can be driven by rotating the handle 20 on the left side of the brush holder seat 1 4 and the right side of the brush holder seat 22. As the screw 17 rotates inside the screw hole 21, it drives the abutment plate 16 to move inward. By shortening the length of the compression spring 6, the elastic force of the compression spring 6 can be increased, thereby increasing the pressure of the brush body 9 on the commutator, ensuring tight contact between the brush and the commutator. When replacing or maintaining the motor brush holder assembly, after removing the brush holder from the inside of the motor, the mounting nuts 14 can be unscrewed from the outside of the screw 23 on both sides of the rear end of the brush plate 2, and the brush holder seat 1 4 and the brush holder seat 2 22 can be quickly separated from the brush plate 2, allowing for convenient replacement of the brush holder assembly.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wear-resistant motor brush holder assembly, comprising a brush plate (2), characterized in that: A brush holder seat 1 (4) is provided on the left side of the front end of the brush plate (2), and a brush holder seat 2 (22) is provided on the right side of the front end of the brush plate (2). Compression springs (6) are respectively provided on the left side inside the brush holder seat 1 (4) and the right side inside the brush holder seat 2 (22). Brush bodies (9) are respectively fixed on the right side of the left compression spring (6) and the left side of the right compression spring (6). An opening (8) is provided at the middle position of the front end of the brush plate (2). A wear-resistant structure for wear-resistant protection of the brush holder assembly is provided at the front end of the brush plate (2). The wear-resistant structure includes a fixed foot (1), a threaded hole (7), a connecting bolt (11), a washer (12), a reserved hole (18), and a reserved opening (19). The fixed foot (1) is fixed on both sides of the top and bottom of the front end of the brush plate (2), and the threaded hole (7) is opened inside the front end of the fixed foot (1). The front end of the brush plate (2) is provided with a cover plate (10), and the reserved holes (18) are opened on both sides of the top and bottom of the front end of the cover plate (10). A reserved opening (19) is opened at the middle position of the front end of the cover plate (10). The connecting bolt (11) is inserted into the reserved hole (18), and the washer (12) is sleeved on the outside of the connecting bolt (11).

2. The wear-resistant motor brush holder assembly according to claim 1, characterized in that: The reserved opening (19) penetrates the interior of the cover plate (10) and is connected to the interior of the opening (8).

3. The wear-resistant motor brush holder assembly according to claim 1, characterized in that: The rear end of the connecting bolt (11) passes through the interior of the reserved hole (18) and is rotatably connected in the threaded hole (7).

4. The wear-resistant motor brush holder assembly according to claim 1, characterized in that: Screw holes (21) are respectively opened inside the left side of the brush holder seat 1 (4) and inside the right side of the brush holder seat 2 (22), and screw rod 1 (17) is threaded inside the screw hole (21). Abutment plate (16) is respectively provided on the left side inside the brush holder seat 1 (4) and inside the right side of the brush holder seat 2 (22). A rotating handle (20) is fixed on the screw rod 1 (17), and the abutment plate (16) is fixedly connected to the compression spring (6).

5. The wear-resistant motor brush holder assembly according to claim 4, characterized in that: The screw (17) passes through the interior of the screw hole (21) and is movably connected to one side of the abutment (16).

6. The wear-resistant motor brush holder assembly according to claim 1, characterized in that: The two sides of the rear end of the brush holder (4) and the brush holder (22) are respectively fixed with screws (23). The two sides of the front end of the brush plate (2) are respectively provided with two sets of insertion holes (13). The two sides of the rear end of the brush plate (2) are respectively provided with mounting nuts (14), and the rear end of the mounting nuts (14) is provided with gaskets (15).

7. The wear-resistant motor brush holder assembly according to claim 6, characterized in that: The second screw (23) passes through the interior of the insertion hole (13) and the second washer (15) respectively, and the mounting nut (14) is rotatably connected to the outside of the second screw (23).

8. The wear-resistant motor brush holder assembly according to claim 1, characterized in that: The top and bottom of the brush holder one (4) and the brush holder two (22) are respectively fixed with wiring plates (3), and the front end of the brush holder one (4) and the brush holder two (22) are respectively provided with slots (5).

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