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Carbon fiber brush

A carbon fiber and conductive carbon fiber technology, used in electrical components, electromechanical devices, electric components, etc., can solve the problems of high noise, easy to jump, wear, etc., to reduce friction loss, prolong service life, and not easy to wear.

Inactive Publication Date: 2016-02-03
陈锦霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the graphite brush 1' and the commutator on the rotor are running relative to each other, the graphite brush 1' rubs against the commutator, and there is rigid friction between the two, which generates very loud noise. 1' is prone to jumping and sparks; in addition, the rigid friction between the graphite brush 1' and the commutator will be like sandpaper rubbing against an object, causing wear of the graphite brush 1', and the life of the motor will be short after the brush is worn 1' Finally, the existing graphite brush 1' will be completely worn out after a few months to a year or so, causing the motor to be scrapped and seriously affecting the service life of the motor

Method used

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Embodiment Construction

[0015] refer to figure 1 , the present invention provides a carbon fiber brush, comprising a brush holder 2, the brush holder 2 is provided with bristles 1 made of conductive carbon fibers, the brush holder 2 is provided with a casing 3, and the casing 3 An arc-shaped limiting edge 31 is arranged on the top, and one end of the bristle 1 protrudes from the outlet of the limiting edge 31 to the brush holder 2 , and the other end is connected to a wire 4 .

[0016] refer to figure 2 , is a schematic diagram of applying the carbon fiber brush of the present invention to a motor, the motor includes a rotor 101 , a stator (not shown in the figure) and a motor housing 103 , and a commutator 102 is arranged on the rotor 101 . The carbon fiber brush 100 is fixed on the motor housing 103 through the brush holder 2, the bristles 1 of the carbon fiber brush 100 are close to the commutator 102, and the limit side 31 is located outside the bristles 1, so that the bristles 1 are in contac...

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Abstract

The present invention discloses a carbon fiber brush. The carbon fiber brush comprises a brush fixed base; and the brush fixed base is provided with brush of kernel made of conductive carbon fibers, one end of the brush of kernel extends out of the brush fixed base, and the other end of the brush of kernel is connected with wires. According to the invention, brush of kernel made of conductive carbon fibers is capable of heat resistance, soft and wear resistant, and is in soft contact with a commutator. When the carbon fiber brush and the commutator of a rotor are relatively running, the soft brush of kernel is close to the commutator and bends along the rotation direction of the commutator. The brush of kernel is not able to bounce and is not reliable to generation of spark, the friction generated between the brush of kernel and the commutator is very small without any noise, therefore the friction loss of the brush of kernel is greatly reduced, the carbon fiber brush is not reliable to wearing, and the service life of a motor is prolonged.

Description

technical field [0001] The invention relates to the field of motor accessories, in particular to a carbon fiber brush. Background technique [0002] Such as image 3 As shown, the brushed motor includes a stator and a rotor, the rotor is provided with a commutator, and the motor is provided with brushes to contact the commutator to guide the current. Since the commutator rotates with the rotor during the working process of the motor, the brushes and the commutator rub against each other. Therefore, when making brushes, materials with good conductivity and wear resistance must be selected. Existing brushed motors mainly adopt relatively wear-resistant graphite brushes 1', the main body of which is a rigid graphite block, which is pushed by a spring to keep the graphite brushes 1' in good contact with the commutator. However, when the graphite brush 1' and the commutator on the rotor are running relative to each other, the graphite brush 1' rubs against the commutator, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/14
Inventor 陈锦霞
Owner 陈锦霞
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