Carbon brush assembly for preventing carbon brush seizure

Abstract

This utility model discloses a carbon brush assembly for preventing carbon brush jamming, belonging to the technical field of carbon brush assembly. A carbon brush assembly for preventing carbon brush jamming includes a carbon brush block. A base plate is fixedly connected to the outside of the carbon brush block via a connecting wire. Elastic protrusions are fixedly connected to both sides of the base plate. A carbon brush holder is disposed outside the base plate. The outer surfaces of the elastic protrusions are all located inside limiting holes. The limiting holes are located inside both sides of the carbon brush holder. A flat spring is fixedly connected to the side of the carbon brush block closest to the base plate. The other end of the flat spring, away from the carbon brush block, is fixedly connected to the outside of the base plate. The flat spring is located outside the connecting wire. A limiting component is disposed outside the carbon brush block. This utility model, through innovative design, significantly improves the stability and durability of the carbon brush assembly, solves the jamming problem that may occur in traditional designs, and provides a more efficient and reliable working solution.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush assembly technology, and more specifically, to a carbon brush assembly for preventing carbon brush jamming. Background Technology

[0002] Carbon brush assemblies are crucial components in electric motors, generators, and other electrical equipment. They are primarily used to transfer current from the stationary part (stator) to the rotating part (rotor), ensuring the normal operation of the motor. They consist of carbon brushes, brush holders, springs, and connecting terminals, and are widely used in DC motors, AC motors, and power tools.

[0003] Traditional carbon brush assemblies often experience problems such as excessive friction between the carbon brush and brush holder, improper spring pressure, or blockage by dust or oil, leading to the carbon brushes becoming stuck and unable to move properly. Stuck carbon brushes can cause poor contact during motor operation, unstable current transmission, and may even lead to serious problems such as motor overheating and damage. Utility Model Content

[0004] The purpose of this invention is to provide a carbon brush assembly that prevents carbon brushes from jamming. By setting a limiting component, the ball bearings inside the limiting frame convert the sliding friction between the carbon brush block and the limiting frame into rolling friction, effectively reducing frictional resistance and making the movement of the carbon brush block smoother. At the same time, the sealing ring can effectively prevent impurities such as toner and dust from entering the gap between the carbon brush block and the limiting frame, preventing impurities from accumulating and causing jamming, further reducing the risk of jamming. The rubber ring can reduce the vibration of the carbon brush block during movement and improve stability.

[0005] The technical solution adopted by this utility model is as follows: A carbon brush assembly for preventing carbon brush jamming includes a carbon brush block. A base plate is fixedly connected to the outside of the carbon brush block via a connecting line. Elastic protrusions are fixedly connected to both sides of the base plate. A carbon brush holder is provided on the outside of the base plate. The outer surfaces of the elastic protrusions are all located inside limiting holes. The limiting holes are opened inside both sides of the carbon brush holder. A flat spring is fixedly connected to the side of the carbon brush block near the base plate. The other end of the flat spring away from the carbon brush block is fixedly connected to the outside of the base plate. The flat spring is located outside the connecting line. A limiting component is provided on the outside of the carbon brush block. The limiting component plays a guiding role during the movement of the carbon brush block.

[0006] The limiting component includes a limiting frame, with ball bearings inside the limiting frame. A sealing ring and a rubber ring are fixedly connected to both sides of the inner side of the limiting frame, and the outer sides of the ball bearings, sealing rings, and rubber rings all abut against the outer side of the carbon brush block.

[0007] Preferably, limit blocks are fixedly connected to the outer two sides of the limiting frame.

[0008] Preferably, the outer side of the limiting block is slidably connected to the inside of the limiting groove, and the limiting groove is opened on both sides of the inside of the carbon brush holder.

[0009] Preferably, the carbon brush holder is fixedly connected to the outer two sides with fixing plates, and the bottom of each fixing plate is fixedly connected with a rubber gasket.

[0010] Preferably, the carbon brush holder is provided with a carbon brush shell on the outside, and a retaining plate is fixedly connected to the inner top of the carbon brush shell.

[0011] Preferably, the card plate abuts against the inner side of the base plate.

[0012] Preferably, the carbon brush housing, rubber gasket, and fixing plate all have connection ports inside.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By incorporating a limiting component, the ball bearings within the limiting frame convert the sliding friction between the carbon brush block and the limiting frame into rolling friction, effectively reducing frictional resistance and making the movement of the carbon brush block smoother. Simultaneously, the sealing ring effectively prevents impurities such as toner and dust from entering the gap between the carbon brush block and the limiting frame, preventing impurity accumulation and jamming, further reducing the risk of jamming. The rubber ring also reduces vibration of the carbon brush block during movement, improving stability.

[0015] 2. Flat springs provide elastic pressure to the carbon brush block. Compared to traditional coil springs, flat springs distribute force more evenly and are less prone to fatigue failure, maintaining stable pressure on the carbon brush block over a long period and ensuring good contact between the carbon brush block and the slip ring. The elastic protrusions on both sides of the base plate can slide within the limiting holes, facilitating convenient installation within the carbon brush holder. Furthermore, the cooperation between the carbon brush housing and the retaining plate effectively protects the internal structure, reducing the intrusion of external environmental factors such as dust and moisture. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an internal structural diagram of the carbon brush holder in this utility model;

[0018] Figure 3 This is a schematic diagram of the flat spring in this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting groove in this utility model;

[0020] Figure 5 This is a schematic diagram of the limiting frame in this utility model;

[0021] Figure 6 This is a schematic diagram of the carbon brush housing in this utility model.

[0022] The following are the labels in the diagram: 1. Carbon brush holder; 2. Carbon brush block; 3. Carbon brush housing; 4. Base plate; 5. Elastic protrusion; 6. Flat spring; 7. Connecting wire; 8. Limiting frame; 9. Limiting block; 10. Limiting groove; 11. Ball bearing; 12. Sealing ring; 13. Rubber ring; 14. Rubber gasket; 15. Fixing plate; 16. Clamping plate; 17. Connecting port; 18. Limiting hole. Detailed Implementation

[0023] Example: Please refer to Figure 1-6 A carbon brush assembly for preventing carbon brush jamming includes a carbon brush block 2. A base plate 4 is fixedly connected to the outside of the carbon brush block 2 via a connecting wire 7. Elastic protrusions 5 are fixedly connected to both sides of the base plate 4. A carbon brush holder 1 is disposed on the outside of the base plate 4. The outer surfaces of the elastic protrusions 5 are all located inside limiting holes 18, which are located on both sides of the carbon brush holder 1. A flat spring 6 is fixedly connected to the side of the carbon brush block 2 closest to the base plate 4. The other end of the flat spring 6, away from the carbon brush block 2, is fixedly connected to the outside of the base plate 4. The flat spring 6 is located outside the connecting wire 7. The outer side of the carbon brush block 2 is provided with a limiting component, which plays a guiding role during the movement of the carbon brush block 2. The limiting component includes a limiting frame 8, and each limiting frame 8 is provided with a ball bearing 11. A sealing ring 12 and a rubber ring 13 are fixedly connected to the inner two sides of the limiting frame 8, respectively. The outer sides of the ball bearing 11, the sealing ring 12 and the rubber ring 13 all abut against the outer side of the carbon brush block 2. Limiting blocks 9 are fixedly connected to the outer two sides of the limiting frame 8. The outer sides of the limiting blocks 9 are slidably connected to the inner side of the limiting groove 10. The limiting groove 10 is opened on both sides of the inner side of the carbon brush holder 1.

[0024] The carbon brush block 2 is the core component of the assembly, responsible for contacting the motor or other moving parts and providing current conduction. The movement of the carbon brush block 2 is guided by the flat spring 6 and the limiting assembly, ensuring the carbon brushes do not jam. The base plate 4 supports the carbon brush block 2 and connects to other components. It fixes the carbon brush block 2 via connecting wires 7 and cooperates with the carbon brush holder 1 via elastic protrusions 5, providing a stable structural foundation. The elastic protrusions 5 are fixedly connected to both sides of the base plate 4, allowing for easy installation of the carbon brush structure inside the carbon brush holder 1. The carbon brush holder 1 provides a frame support for the entire assembly, helping to guide the movement of the carbon brush block 2. The limiting holes 18 and limiting grooves 10 within the carbon brush holder 1, in cooperation with the elastic protrusions 5 and the limiting frame 8, ensure that the carbon brush block 2 maintains the correct position during movement. The limiting frame 8, along with the ball bearings 11, sealing rings 12, rubber rings 13, etc., constitute the limiting assembly. The limiting frame 8 guides the carbon brush block 2, preventing it from jamming during movement. The design of the ball bearing 11, sealing ring 12, and rubber ring 13 ensures that the limiting assembly not only guides but also provides a certain degree of cushioning, reducing friction and extending service life. The flat spring 6 connects the carbon brush block 2 to the base plate 4, providing a certain elastic restoring force to ensure that the carbon brush block 2 maintains appropriate pressure during use, preventing jamming due to insufficient elasticity.

[0025] Reference Figure 1 , Figure 4 and Figure 6 The carbon brush holder 1 is fixedly connected to the two outer sides of the fixed plate 15. The bottom of the fixed plate 15 is fixedly connected to the rubber gasket 14. The carbon brush holder 1 is provided with a carbon brush shell 3. The top inner part of the carbon brush shell 3 is fixedly connected to the clamping plate 16. The clamping plate 16 abuts against the inner side of the base plate 4. The carbon brush shell 3, the rubber gasket 14 and the fixed plate 15 are all provided with connection ports 17.

[0026] The fixing plate 15 and the carbon brush housing 3 together constitute the external protective structure of the assembly. The fixing plate 15, in conjunction with the fixing plates 15 on both sides of the carbon brush holder 1, provides structural stability to the overall carbon brush assembly. The rubber gasket 14 acts as a buffer and prevents vibration, ensuring greater stability of the entire assembly during use. The connection port 17 is designed for connection to other equipment or external components, ensuring the assembly can be securely installed on the motor or related devices. The clamping plate 16, in conjunction with the base plate 4, serves to position the carbon brush housing 3 during installation.

[0027] The working principle of this utility model:

[0028] The carbon brush block 2 is installed in the limiting holes 18 of the carbon brush holder 1 through the elastic protrusions 5 on both sides of the base plate 4. The limiting components on the outside of the carbon brush block 2 serve as guides. The ball bearings 11 inside the limiting frame 8 can convert the sliding friction between the carbon brush block 2 and the limiting frame 8 into rolling friction, thereby significantly reducing the movement resistance and ensuring that the carbon brush block 2 moves smoothly during operation. The sealing rings 12 and rubber rings 13 on both sides of the limiting frame 8 are in close contact with the outer surface of the carbon brush block 2 to form a sealing structure, which can effectively prevent carbon powder, dust and other impurities from entering the gap between the carbon brush block 2 and the limiting frame 8, avoiding the accumulation of impurities and jamming. At the same time, the rubber rings 13 can play a role in buffering and damping vibration during the movement of the carbon brush block 2, further improving the stability of the movement of the carbon brush block 2. A flat spring 6 is fixedly connected to the side of the carbon brush block 2 near the base plate 4, and the other end of the flat spring 6 is fixed to the outside of the base plate 4. The flat spring 6 continuously provides uniform and stable elastic pressure during the movement of the carbon brush block 2, so that the carbon brush block 2 always maintains good contact with the slip ring. Compared with traditional helical springs, flat springs 6 have more uniform force distribution and better fatigue resistance, which can effectively extend the life of components.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A carbon brush assembly for preventing carbon brush seizure, comprising a carbon brush block (2), characterized in that: The carbon brush block (2) is fixedly connected to a base plate (4) via a connecting line (7). Elastic protrusions (5) are fixedly connected to both sides of the base plate (4). A carbon brush holder (1) is provided on the outside of the base plate (4). The outer side of the elastic protrusions (5) is located inside the limiting hole (18). The limiting hole (18) is located inside both sides of the carbon brush holder (1). A flat spring (6) is fixedly connected to the side of the carbon brush block (2) near the base plate (4). The other end of the flat spring (6) away from the carbon brush block (2) is fixedly connected to the outside of the base plate (4). The flat spring (6) is located outside the connecting line (7). A limiting component is provided on the outside of the carbon brush block (2). The limiting component plays a guiding role during the movement of the carbon brush block (2). The limiting component includes a limiting frame (8), and each limiting frame (8) is provided with a ball (11). A sealing ring (12) and a rubber ring (13) are fixedly connected to the two sides inside the limiting frame (8). The outer sides of the ball (11), the sealing ring (12) and the rubber ring (13) are all in contact with the outer side of the carbon brush block (2).

2. A carbon brush assembly for preventing carbon brush jamming according to claim 1, characterized in that: Limiting blocks (9) are fixedly connected to the outer two sides of the limiting frame (8).

3. A carbon brush assembly for preventing carbon brush jamming according to claim 2, characterized in that: The exterior of the limiting block (9) is slidably connected to the interior of the limiting groove (10), and the limiting groove (10) is opened on both sides of the interior of the carbon brush holder (1).

4. A carbon brush assembly for preventing carbon brush jamming according to claim 1, characterized in that: The carbon brush holder (1) is fixedly connected to two external sides by fixing plates (15), and rubber gaskets (14) are fixedly connected to the bottom of each fixing plate (15).

5. A carbon brush assembly for preventing carbon brush jamming according to claim 1, characterized in that: The carbon brush holder (1) is provided with a carbon brush shell (3) on the outside, and a card plate (16) is fixedly connected to the top of the carbon brush shell (3).

6. A carbon brush assembly for preventing carbon brush jamming according to claim 5, characterized in that: The card plate (16) abuts against the inner side of the base plate (4).

7. A carbon brush assembly for preventing carbon brush jamming according to claim 5, characterized in that: The carbon brush housing (3), rubber gasket (14) and fixing plate (15) are all provided with connection ports (17).

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