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Novel electric brush

A brush, a new type of technology, applied in the direction of circuits, collectors, electrical components, etc., can solve problems such as brush stuck, achieve smooth rotation, low no-load starting voltage, and meet the design requirements

Inactive Publication Date: 2014-03-12
陕西航天导航设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to design a new type of electric brush to overcome the disadvantages of existing electric brushes that are easy to get stuck

Method used

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Embodiment Construction

[0011] Such as figure 2 What is shown is a specific embodiment of the invention. The structure of the brush 4 is designed as a hook, one end is in contact with the commutator 1, and the other end is directly riveted on the brush box 3 through a rivet, and rotates around the riveting point, and the outer hook protruding from one end of the spring 2 presses on the electric brush box. The highest point of the brush hook, so that the brush acts on the commutator through the torsion of the spring. In the design, it is required to ensure that the contact between a pair of brushes and the commutator is 3 or 4 pieces when the hollow cup motor is rotating. The torsion plate and the spring have good torsion consistency, so that the no-load starting voltage of the coreless motor is small. Compared with traditional brushes, this new type of brush has no brush box and is a brushless brush with high space utilization, long working stroke and long working life, which is conducive to the in...

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Abstract

The invention aims to design a novel electric brush to overcome the defect of easy locking of the traditional electric brush. Specifically, the novel electric brush comprises a commutator, springs, an electric brush box body and electric brushes, wherein the commutator is arranged in the middle part of the electric box body; the novel electric brush is characterized in that each electric brush is of a hook shape, one end of each electric brush is in contact with the commutator, the other end of each electric brush is directly riveted on the electric brush box body by a rivet and rotates by taking a riveting point as a center, and an outer hook extending from one end of each spring presses on the highest point of the hook of the corresponding electric brush. By the novel electric brush, the phenomenon that the springs are locked is solved; the electric brushes are riveted at one step, so that the assembly is easy. A motor adopting the novel electric brush is smooth in rotating and small in no-load starting voltage, and the reliability of the motor is improved. The motor meets the design requirement according to data analysis.

Description

technical field [0001] The present invention relates to aviation, aerospace, weapons, medical equipment, robots and some special fields, even in technical fields such as textile machinery and laser measuring instruments. Background technique [0002] At present, the brushes of domestic hollow cup motors adopt the traditional brush design scheme. The brushes and springs are in a straight line, and the brushes are in the form of a cuboid. It plays the role of mechanical commutation of the motor. The spring and the brush are placed in the brush box installed on the brush box during assembly, such as figure 1 As shown, the disadvantage of this kind of brush is: when the spring is assembled, it is placed after the brush box, and then the brush is assembled at the front end, the assembly is difficult, and the consistency of the pressure of the brush on the commutator is difficult. Guaranteed, the deformation of the spring is also difficult to guarantee, which directly affects the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/24H01R39/39
Inventor 刘武孙文钊
Owner 陕西航天导航设备有限公司
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