Anti-locking carbon brush assembly

Abstract

The utility model relates to the technical field of carbon brushes, in particular to an anti-jamming carbon brush assembly. A rear cover is mounted on the rear side of the carbon brush holder through fixing screws, a hole is formed in the front side of the carbon brush holder, a carbon brush body is slidably mounted in the hole, a carbon brush fixing sleeve is connected to the tail of the carbon brush body, the carbon brush fixing sleeve is slidably mounted in the carbon brush holder, and an electric wire penetrates through the carbon brush fixing sleeve and then is connected to the carbon brush body. A spring is arranged between the rear side of the carbon brush fixing sleeve and the rear cover and is arranged on the outer side of the electric wire; according to the device, high-pressure gas is utilized to increase the pushing force of the carbon brush, so that the jamming risk is reduced, the pressure of the spring is reduced, and fatigue of the spring in long-term use is prevented; high-pressure gas is sealed from the two ends through the expansion gasket and the sealing ring, and gas leakage is prevented; by arranging the one-way sealing ring, automatic exhaust and gap cleaning can be realized in the forward moving process of the carbon brush, so that gas is prevented from entering the carbon brush, and carbon powder and dust are prevented from entering the carbon brush.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon brushes, in particular to an anti-jamming carbon brush assembly. Background Art

[0002] A carbon brush is a component used in motors or generators, usually made of graphite doped with a curing agent. Some special carbon brushes will add metal or resin components as needed. During operation, the carbon brush contacts the rotor of the rotating motor or generator to ensure current transmission. The carbon brush rubs against the rotor, which causes wear on the surface of the carbon brush and the rotor. The carbon powder produced by the wear can easily enter the carbon brush holder, causing the carbon brush to be difficult to move or even stuck. After being stuck, the carbon brush cannot automatically fit onto the rotor, which leads to poor contact, sparking, or even open circuit, affecting the operation of the equipment. Utility Model Content

[0003] The utility model aims to provide a reasonably designed anti-stuck carbon brush assembly for the defects and shortcomings of the prior art, which can solve the above defects.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a carbon brush holder, a rear cover is installed on the rear side of the carbon brush holder by fixing screws, a hole is opened on the front side of the carbon brush holder, a carbon brush body is slidably installed in the hole, a carbon brush fixing sleeve is connected to the tail of the carbon brush body, the carbon brush fixing sleeve is slidably installed in the carbon brush holder, a wire quick connector is fixedly inserted in the rear cover, an end of the wire quick connector located on the inner side of the rear cover is connected to an electric wire, the electric wire passes through the carbon brush fixing sleeve and is connected to the carbon brush body, a spring is provided between the rear side of the carbon brush fixing sleeve and the rear cover, and the spring is provided on the outer side of the electric wire.

[0005] Preferably, a one-way air inlet head is provided on the rear cover, and a portion between the rear cover and the carbon brush fixing sleeve is filled with high-pressure gas.

[0006] Preferably, an expansion washer is provided on the inner edge of the connection between the rear end of the carbon brush holder and the rear cover.

[0007] Preferably, a plurality of sealing rings are provided on the outer side of the carbon brush fixing sleeve.

[0008] Preferably, a one-way sealing ring is provided at the connection between the inner side of the carbon brush holder and the carbon brush body, and the cross section of the one-way sealing ring is a right triangle, the long right-angled side of the right triangle is connected to the carbon brush holder, and the hypotenuse is arranged toward the inner side of the carbon brush holder.

[0009] Preferably, a wear-resistant coating is provided on the inner side of the carbon brush holder.

[0010] After adopting the above structure, the beneficial effects of the utility model are:

[0011] 1. This device uses high-pressure gas to increase the force of the carbon brush to push, thereby reducing the risk of jamming, while reducing the pressure on the spring to prevent spring fatigue during long-term use.

[0012] 2. This device uses expansion washers and sealing rings to seal the high-pressure gas from both ends to prevent leakage, and there is a wear-resistant coating inside the carbon brush holder to reduce the friction between the brush and the sealing ring, further reducing the risk of leakage.

[0013] 3. This device is provided with a one-way sealing ring, which can automatically exhaust and clean the gap during the forward movement of the carbon brush, thereby preventing gas from entering the interior, thereby preventing carbon powder and dust from entering, and further preventing the carbon brush from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a right front structural view of the utility model;

[0015] Figure 2 It is a right rear structural view of the utility model;

[0016] Figure 3 It is a structural sectional view of the utility model;

[0017] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0018] Description of reference numerals:

[0019] 1. Carbon brush holder; 2. Back cover; 3. Fixing screws; 4. Wire quick connector; 5. One-way air inlet head; 6. Carbon brush body; 7. Electrical wire; 8. Spring; 9. Expansion washer; 10. Carbon brush fixing sleeve; 11. Sealing ring; 12. One-way sealing ring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 4As shown, it comprises a carbon brush holder 1, a rear cover 2 is mounted on the rear side of the carbon brush holder 1 through fixing screws 3, a hole is opened on the front side of the carbon brush holder 1, a carbon brush body 6 is slidably mounted in the hole, a carbon brush fixing sleeve 10 is connected to the tail of the carbon brush body 6, the carbon brush fixing sleeve 10 is slidably mounted in the carbon brush holder 1, a wire quick connector 4 is fixedly inserted in the rear cover 2, an end of the wire quick connector 4 located on the inner side of the rear cover 2 is connected to an electric wire 7, the electric wire 7 passes through the carbon brush fixing sleeve 10 and is connected to the carbon brush body 6, a spring 8 is arranged between the rear side of the carbon brush fixing sleeve 10 and the rear cover 2, and the spring 8 is arranged on the outer side of the electric wire 7;

[0022] A one-way air inlet head 5 is provided on the rear cover 2, and a portion between the rear cover 2 and the carbon brush fixing sleeve 10 is filled with high-pressure gas;

[0023] An expansion washer 9 is provided at the inner edge of the connection between the rear end of the carbon brush holder 1 and the rear cover 2;

[0024] Several sealing rings 11 are provided on the outer side of the carbon brush fixing sleeve 10;

[0025] A one-way sealing ring 12 is provided at the connection between the inner side of the carbon brush holder 1 and the carbon brush body 6. The cross section of the one-way sealing ring 12 is a right triangle. The long right-angled side of the right triangle is connected to the carbon brush holder 1, and the hypotenuse is arranged toward the inner side of the carbon brush holder 1.

[0026] The inner side of the carbon brush holder 1 is provided with a wear-resistant coating.

[0027] The principle and use process of this utility model:

[0028] First, open the rear cover 2, put the carbon brush body 6 and the carbon brush fixing sleeve 10 into the carbon brush holder 1, and then connect the end of the electric wire 7 to one end of the wire quick connector 4 located in the rear cover 2, press the spring 8 into the carbon brush holder 1, and install the rear cover 2 on the carbon brush holder 1 through the fixing screw 3, and fill the carbon brush holder 1 with compressed gas through the one-way air inlet head 5. The gas can assist the spring 8 to push the carbon brush fixing sleeve 10 forward to prevent the spring 8 from fatigue during long-term use, and increase the force of the carbon brush body 6 pushing forward to reduce the risk of being stuck; at the same time, the gas pushes the expansion gasket 9 outward from the gap between the carbon brush holder 1 and the rear cover 2, so that the expansion gasket 9 is deformed and filled in the gap to achieve sealing and prevent To stop air leakage, the sealing ring 11 prevents gas from leaking from the outside of the carbon brush fixing sleeve 10, and the one-way sealing ring 12 is used, the internal gas can push the thin part of the upper side of the one-way sealing ring 12 outward, so that the gas can flow outward, and the slope surface of the one-way sealing ring 12 will give its top support force to prevent it from tilting inward, thereby preventing external gas from entering the carbon brush holder 1, thereby preventing carbon powder and dust from entering, and with the use of the carbon brush, the front end of the carbon brush is worn, and the carbon brush is gradually pushed forward by the compressed gas and the spring 8, and the space between the carbon brush fixing sleeve 10 and the front end of the carbon brush holder 1 is reduced, so that the air is discharged outward from the one-way sealing ring 12, and the dust and carbon powder adhering to the outside of the one-way sealing ring 12 can be blown out.

[0029] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or within the equivalent forms of such scope and boundaries.

Claims

1. An anti-stuck carbon brush assembly, comprising a carbon brush holder (1), characterized in that: A rear cover (2) is mounted on the rear side of the carbon brush holder (1) via fixing screws (3); a hole is formed on the front side of the carbon brush holder (1); a carbon brush body (6) is slidably mounted in the hole; a carbon brush fixing sleeve (10) is connected to the tail of the carbon brush body (6); the carbon brush fixing sleeve (10) is slidably mounted in the carbon brush holder (1); a wire quick connector (4) is fixedly inserted in the rear cover (2); an end of the wire quick connector (4) located on the inner side of the rear cover (2) is connected to an electric wire (7); the electric wire (7) passes through the carbon brush fixing sleeve (10) and is then connected to the carbon brush body (6); a spring (8) is provided between the rear side of the carbon brush fixing sleeve (10) and the rear cover (2); the spring (8) is arranged on the outer side of the electric wire (7).

2. The anti-stuck carbon brush assembly according to claim 1, characterized in that: The rear cover (2) is provided with a one-way air inlet head (5), and a portion between the rear cover (2) and the carbon brush fixing sleeve (10) is filled with high-pressure gas.

3. The anti-stuck carbon brush assembly according to claim 2, characterized in that: An expansion washer (9) is provided at the inner edge of the connection between the rear end of the carbon brush holder (1) and the rear cover (2).

4. The anti-stuck carbon brush assembly according to claim 3, characterized in that: A plurality of sealing rings (11) are provided on the outer side of the carbon brush fixing sleeve (10).

5. The anti-stuck carbon brush assembly according to claim 4, characterized in that: A one-way sealing ring (12) is provided at the connection between the inner side of the carbon brush holder (1) and the carbon brush body (6); the cross section of the one-way sealing ring (12) is a right triangle, the long right-angled side of the right triangle is connected to the carbon brush holder (1), and the hypotenuse is arranged toward the inner side of the carbon brush holder (1).

6. The anti-stuck carbon brush assembly according to claim 5, characterized in that: The inner side of the carbon brush holder (1) is provided with a wear-resistant coating.

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