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Brush of motor for automotive electronics

A brush and electric equipment technology, applied in the direction of motor generator connectors, electromechanical devices, circuits, etc., can solve the problem of no brush sliding sound and so on

Inactive Publication Date: 2020-07-17
TRIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no description of the type of motor, and there is no description of the sliding sound of the brush

Method used

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  • Brush of motor for automotive electronics
  • Brush of motor for automotive electronics
  • Brush of motor for automotive electronics

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Experimental program
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Effect test

Embodiment

[0024] Flake natural graphite with an average particle size of 50 μm, ZrO 2 (Vickers hardness is 12.3Gpa) and other abrasive materials, solid lubricant MoS 2 (the average particle size is 2.5 μm, the content in the brush is 0.5wt%), and phenolic resin resin binder (the content in the brush is 5wt% in terms of carbon conversion) in the mixer, and pulverized to Make it pass through a 32-mesh sieve to make resin-treated graphite powder. Electrolytic copper powder with an average particle diameter of 30 μm was added to the obtained resin-treated graphite powder, and mixed with a V-type mixer until it became uniform, thereby producing a brush main body material. The obtained material of the brush main body was molded under a pressure of 0.20 MPa, and fired in a predetermined atmosphere to produce a brush for a motor for automotive electrical equipment with lead wires. By firing, the phenolic resin binder is converted into carbon. transform ZrO 2 The average particle size and co...

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PUM

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Abstract

This brush of a motor for automotive electronics contains, in a main body of the brush, carbon and an abrasive material having a Vickers hardness of 10 to 14 GPa. Accordingly, the sliding noise of thebrush is reduced in the brush of a motor for automotive electronics.

Description

technical field [0001] The invention relates to a brush for a motor used in automobile electrical equipment. Background technique [0002] In the brush of the motor, SiO is added to remove the oxide film generated by the contact with the commutator. 2 or Al 2 o 3 particles of abrasive material. However, if an abrasive material is contained in the brush to remove the oxide film, a sliding noise of the brush may be generated from the motor. In particular, brushes for motors used in automotive electrical equipment have a small distance from the motor to passengers and the sliding noise echoes in the cabin, so the sliding noise from the motor can make passengers feel uncomfortable. And generally speaking, the higher the temperature of the brush, the louder the sliding sound of the brush will be. [0003] The related prior art is shown below. Patent Document 1 (JP6106667B) relates to a brush for a motor of a washing machine or a motor of an electric tool, and discloses that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K13/00H01R39/22
CPCH01R39/22C01G25/02C01P2004/61H01R2201/10H02K13/10
Inventor 川俣贤治
Owner TRIS
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