Brush head with reinforcing mechanism

Abstract

The utility model discloses a brush head with a reinforcing mechanism, and relates to the field of carbon brush installation, the brush head comprises a bottom ring, a fixing shell and a brush head body, the upper end of the fixing shell is provided with a reinforcing assembly used for fixing the brush head body, the inner side of the fixing shell is provided with a protection assembly, the reinforcing assembly comprises an upper cover plate arranged at the upper end of the fixing shell in a sliding mode, and the upper cover plate is provided with a protection cover. The upper cover plate in the reinforcing assembly can slide on the fixing shell, meanwhile, the thickness range of the brush head body which can be connected with the fixing shell in a clamped mode can be finely adjusted through the elasticity of the expansion spring, when the difference is small, the brush head body can be clamped through the expansion spring, and the brush head body can be fixed through the expansion spring. According to the electric brush, polishing or thickening treatment is not needed, and the electric brush can be effectively fixed by using elasticity through the transversely-arranged expansion spring, so that the firmness of the electric brush is improved.

Description

Technical Field

[0001] The utility model relates to the field of carbon brush installation, in particular to a brush head with a reinforcement mechanism. Background Art

[0002] The brush head of the carbon brush, also known as the brush head, brush head or brush, is a sliding contact part that is widely used in many electrical devices. It is generally square in shape and is stuck on a metal bracket. There is a spring inside to press it tightly on the shaft. When the motor rotates, the electrical energy is transmitted to the coil through the commutator. Because its main component is carbon, it is called a carbon brush;

[0003] The existing brushes are fixed by metal brackets during use. This fixing method is relatively simple, and the thickness of the brushes has a certain deviation during the production process, which leads to the need to trim the brushes for individual reasons when installing them. In addition, the brush heads will gradually wear out after being used for a certain period of time, which will lead to the carbon brushes not being replaced in time after being worn out, causing the spring to contact the brush ring, affecting the operation of the motor.

[0004] Therefore, it is necessary to propose a brush head with a reinforcement mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a brush head with a reinforcement mechanism to solve the problem that the metal fixing of the metal bracket is relatively simple, and the thickness of the brush has a certain deviation during the production process, resulting in the need to trim the brush due to individual reasons when installing the brush, and the brush head will gradually wear out after a certain period of use, resulting in the carbon brush not being replaced in time after wear, causing the spring to contact the brush ring and affecting the operation of the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brush head with a reinforcement mechanism, comprising a bottom ring, a fixed shell, and a brush head body, wherein a reinforcement component for fixing the brush head body is provided at the upper end of the fixed shell, and a protective component is provided inside the fixed shell;

[0007] The reinforcement assembly includes an upper cover plate slidably arranged on the upper end of a fixed shell, two outer buckle plates are fixedly provided at both ends of the upper cover plate, two inner buckle plates are fixedly provided at both ends of the fixed shell, an outer baffle plate is fixedly provided at the same end of the two outer buckle plates, an inner baffle plate is fixedly provided at one end of the two inner buckle plates away from the outer baffle plate, the outer buckle plates and the inner buckle plates are slidably connected, an expansion spring is provided between the outer buckle plates and the inner buckle plates, two ends of the expansion spring abut against the corresponding inner baffle plate and outer baffle plate, and a pull ring is fixedly provided at the upper end of the upper cover plate.

[0008] Preferably, the protection component includes a blocking plate slidably arranged on the inner side of the fixed shell, two conical grooves are provided at both ends of the blocking plate, a first spring is provided on the inner side of the fixed shell, and the other end of the blocking plate abuts against one end of the brush head body.

[0009] Preferably, one end of the blocking plate is fixedly connected to one end of the first spring, and the other end of the first spring abuts against the inner wall of the fixed shell.

[0010] Preferably, two limit shells are fixedly provided at both ends of the fixed shell, and limit blocks are slidably provided on the inner side of the limit shell. The corresponding ends of the two limit blocks are provided with tapered angles, and the tapered angles of the limit blocks are provided with rounded corners. Two second springs are fixedly provided at the other end of the limit block, and the other end of the second spring is fixedly connected to the inner wall of the limit shell.

[0011] Preferably, one end of the upper cover plate is partially a transparent layer, and the fixed shell is fixedly arranged on one end of the bottom ring.

[0012] Preferably, the two limit blocks abut against a corresponding end of the brush head body at their conical angles.

[0013] Technical effects and advantages of the utility model:

[0014] 1. While the upper cover plate in the reinforcement assembly can slide on the fixed shell, the thickness range of the brush head body that can be clamped by the fixed shell can be fine-tuned by the elasticity of the expansion spring. When the gap is small, there is no need to grind or pad the thickness. By placing the expansion spring horizontally, the brush can be effectively fixed by elasticity to increase the firmness of the brush.

[0015] 2. By forming a card connection through the group partition and the limit block in the protective component, after the brush head body is about to be completely worn, it can prevent the first spring from contacting the brush ring and affecting the motor. The extension distance of the first spring can be effectively limited through the conical setting. When limiting, the first spring has already extended a certain distance, effectively offsetting the action force of the first spring, which is in line with reality and reduces the force on the second spring. In addition, through the limit block and the conical groove, when unlocking the limit block, you only need to insert the brush head body to release the limit of the limit block. The operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the brush head structure with a reinforcement mechanism of the utility model.

[0017] Figure 2 This is a schematic diagram of the fixed shell structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixed shell of the utility model.

[0019] Figure 4 It is a schematic diagram of the connection structure of the outer gusset plate and the inner gusset plate of the utility model.

[0020] Figure 5 It is a schematic diagram of the split structure of the outer gusset plate and the inner gusset plate of the utility model.

[0021] Figure 6 It is a schematic diagram of the internal structure of the fixed shell of the utility model.

[0022] In the figure: 1. bottom ring; 2. fixing shell; 3. reinforcement assembly; 301. upper cover plate; 302. outer buckle plate; 303. inner buckle plate; 304. expansion spring; 305. outer baffle plate; 306. inner baffle plate; 307. pull ring; 4. protection assembly; 401. blocking plate; 402. conical groove; 403. first spring; 404. limiting shell; 405. limiting block; 406. conical angle; 407. second spring; 5. brush head body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1 - Figure 6 The brush head with a reinforcement mechanism shown in the figure comprises a bottom ring 1, a fixed shell 2, and a brush head body 5. A reinforcement component 3 for fixing the brush head body 5 is provided at the upper end of the fixed shell 2, and a protection component 4 is provided inside the fixed shell 2;

[0025] The reinforcement component 3 includes an upper cover plate 301 slidably arranged on the upper end of the fixed shell 2. The cover plate 301 is arranged in a flat plate. Two outer buckle plates 302 are fixedly arranged at both ends of the upper cover plate 301. Two inner buckle plates 303 are fixedly arranged at both ends of the fixed shell 2. An outer baffle plate 305 is fixedly arranged at the same end of the two outer buckle plates 302. An inner baffle plate 306 is fixedly arranged at one end of the two inner buckle plates 303 away from the outer baffle plate 305. The outer buckle plates 302 and the inner buckle plates 303 are slidably connected. The inner buckle plates 303 slide inside the outer buckle plates 302. An expansion spring 304 is provided between the outer buckle plate 302 and the inner buckle plate 303. The expansion spring 304 and the upper cover plate 301 are arranged in parallel. The two ends of the expansion spring 304 abut against the corresponding inner baffle plate 306 and outer baffle plate 305. The length of the inner baffle plate 306 and the outer baffle plate 305 is greater than the relaxed length of the expansion spring 304. Therefore, the inner baffle plate 306 and the outer baffle plate 305 are not subjected to the force of the expansion spring 304. A pull ring 307 is fixed at the upper end of the upper cover plate 301 to facilitate sliding and pulling open the upper cover plate 301.

[0026] In the embodiment of the utility model, the protective component 4 includes a blocking plate 401 slidably arranged on the inner side of the fixed shell 2, two conical grooves 402 are provided at both ends of the blocking plate 401, a first spring 403 is provided on the inner side of the fixed shell 2, and the other end of the blocking plate 401 abuts against one end of the brush head body 5, thereby increasing the stability of the brush head body 5 through surface contact, one end of the blocking plate 401 is fixedly connected to one end of the first spring 403, and the other end of the first spring 403 abuts against the inner wall of the fixed shell 2.

[0027] In the embodiment of the utility model, two limit shells 404 are fixedly provided at both ends of the fixed shell 2, and a limit block 405 is slidably provided on the inner side of the limit shell 404. The corresponding ends of the two limit blocks 405 are provided with a tapered corner 406, which is convenient for clamping in the tapered groove 402. The limit blocks 405 are provided with rounded corners at the tapered corners 406, so that when the limit blocks 405 and the brush head body 5 are in contact, their contact surfaces are arc-shaped, preventing the limit blocks 405 from scratching the brush head body 5. Two second springs 407 are fixedly provided at the other end of the limit block 405, and the other end of the second spring 407 is fixedly connected to the inner wall of the limit shell 404. The two second springs 407 are used to ensure that the force on the limit block 405 is uniform, and it will not deviate when it is extended or retracted.

[0028] In the embodiment of the utility model, one end of the upper cover plate 301 is partially a transparent layer. When inspecting the wear of the brush head body 5, there is no need to remove the brush head body 5. It is only necessary to observe the remaining condition of the brush head body 5 through the transparent layer of the upper cover plate 301. The fixed shell 2 is fixedly arranged at one end of the bottom ring 1.

[0029] In the embodiment of the utility model, the two limit blocks 405 abut against the corresponding end of the brush head body 5 at their conical angles 406 , and the brush head body 5 can be reinforced for a second time through the limit blocks 405 .

[0030] Working principle: the operator aligns the brush head body 5 with the opening of the fixed shell 2, and then directly inserts the brush head body 5 into the fixed shell 2. Before insertion, the operator buckles the pull ring 307 in the reinforcement component 3 with a finger, so that the upper cover plate 301 drives the outer buckle plate 302 to move, so that the outer buckle plate 302 squeezes the expansion spring 304, and the expansion spring 304 is squeezed and deformed by the outer buckle plate 302 and the inner buckle plate 303, so as to increase the distance between the upper cover plate 301 and the fixed shell 2, increase the storage thickness of the fixed shell 2, and then put the brush head body 5 into the fixed shell 2. Through the force of the expansion spring 304, the upper cover plate 301 is reset to fix the brush head body 5;

[0031] When the upper cover 301 needs to be disassembled, it is only necessary to hold the pull ring 307 with a finger and slide the upper cover 301 toward the outer baffle 305 to remove the upper cover 301. The operation is simple.

[0032] When the brush head body 5 is gradually worn out, the first spring 403 in the protective component 4 gradually squeezes the brush head body 5 to move it, thereby moving the blocking plate 401, and then the blocking plate 401 drives the conical groove 402 to gradually move toward the limiting shell 404, so that the conical groove 402 gradually fits the conical angle 406 of the limiting block 405. The second spring 407 is worked to squeeze the limiting block 405 to make it jam the blocking plate 401, and then the first spring 403 is jammed inside the fixed shell 2 to prevent the first spring 403 from contacting the brush ring due to forgetting to inspect and replace it for too long.

Claims

1. A brush head with a reinforcement mechanism, comprising a bottom ring (1), a fixing shell (2), and a brush head body (5), characterized in that: The upper end of the fixed shell (2) is provided with a reinforcement component (3) for fixing the brush head body (5), and the inner side of the fixed shell (2) is provided with a protection component (4); The reinforcing component (3) comprises an upper cover plate (301) slidably arranged on the upper end of the fixed shell (2); two outer buckle plates (302) are fixedly arranged at both ends of the upper cover plate (301); two inner buckle plates (303) are fixedly arranged at both ends of the fixed shell (2); an outer baffle plate (305) is fixedly arranged at the same end of the two outer buckle plates (302); an inner baffle plate (306) is fixedly arranged at one end of the two inner buckle plates (303) away from the outer baffle plate (305); the outer buckle plates (302) and the inner buckle plates (303) are slidably connected; an expansion spring (304) is arranged between the outer buckle plates (302) and the inner buckle plates (303); two ends of the expansion spring (304) abut against the corresponding inner baffle plate (306) and the outer baffle plate (305); and a pull ring (307) is fixedly arranged at the upper end of the upper cover plate (301).

2. A brush head with a reinforcement mechanism according to claim 1, characterized in that: The protection component (4) comprises a blocking plate (401) slidably arranged on the inner side of the fixed shell (2), two conical grooves (402) are provided at both ends of the blocking plate (401), a first spring (403) is provided on the inner side of the fixed shell (2), and the other end of the blocking plate (401) abuts against one end of the brush head body (5).

3. A brush head with a reinforcement mechanism according to claim 2, characterized in that: One end of the blocking plate (401) is fixedly connected to one end of the first spring (403), and the other end of the first spring (403) abuts against the inner wall of the fixed shell (2).

4. A brush head with a reinforcement mechanism according to claim 3, characterized in that: Two limiting shells (404) are fixedly provided at both ends of the fixed shell (2), and limiting blocks (405) are slidably provided inside the limiting shell (404), and corresponding ends of the two limiting blocks (405) are provided with conical corners (406), and the conical corners (406) of the limiting blocks (405) are provided with rounded corners, and two second springs (407) are fixedly provided at the other ends of the limiting blocks (405), and the other ends of the second springs (407) are fixedly connected to the inner wall of the limiting shell (404).

5. A brush head with a reinforcement mechanism according to claim 1, characterized in that: One end of the upper cover plate (301) is partially a transparent layer, and the fixed shell (2) is fixedly arranged on one end of the bottom ring (1).

6. A brush head with a reinforcement mechanism according to claim 4, characterized in that: The two limit blocks (405) abut against a corresponding end of the brush head body (5) at their conical angles (406).

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