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Brush sheet used in minitype motor

A technology of micro motors and brushes, which is applied in the direction of current collectors, electrical components, electromechanical devices, etc., can solve problems such as inability to continue to use, and achieve the effects of prolonging service life, reducing deformation, and stabilizing electrical properties

Inactive Publication Date: 2006-04-26
周万顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As previously stated, prior art for brushes for small motors cannot be carried over to brushes for micro motors

Method used

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  • Brush sheet used in minitype motor
  • Brush sheet used in minitype motor
  • Brush sheet used in minitype motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention provides a brush used for micro motors, especially the structure of the brush according to the present invention has fully overcome the limitation that the structure of the brush in the small motor cannot be miniaturized. In order to stabilize the electrical properties of the micro-motor and increase the service life of the micro-motor. The structure of the brush sheet according to the preferred embodiment of the present invention will be described in detail below, so as to fully illustrate the features, spirit and advantages of the present invention.

[0026] Such as Figure 2A to Figure 2E As shown, the structure of the brush piece 30 according to a preferred embodiment of the present invention, the commutator shaft 48 in elastic contact with it, the motor back cover 40 engaged with it, and the connection and combination relationship between them are fully disclosed. in the figure. The brush piece 30, the commutator shaft 38 and the motor rear ...

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PUM

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Abstract

The invention discloses a brush used in a micro motor, the micro motor includes a commutator shaft and a motor back cover; the motor back cover has a pair of brush slots corresponding to the brush; the brush The sheet includes a thicker first element and a thinner second element; the first element has a first base and an insertion portion extending from the first base; the second element has a second base, a a curved portion and an axial slide portion; the curved portion is bent at a predetermined angle to separate the second base from the axial slide portion; the second base is combined with the first base of the first element; The axial slide portion extends from the bent portion toward a predetermined direction; the brush is inserted into the corresponding brush slot of the motor back cover through the insertion portion of the first element, so as to be firmly connected to the motor back cover; The shaft slide portion is brought into elastic contact with the commutator shaft, and the predetermined direction is perpendicular to an axial direction of the commutator shaft.

Description

technical field [0001] The present invention relates to a brush used in a motor, and in particular, the brush is commonly used in a micro-motor. Background technique [0002] Brushes are one of the key components of a typical motor. The basic requirement for the brush is that after the motor is assembled, the commutator slide portion on the brush must be in accurate elastic contact with the commutator shaft. The so-called accurate elastic contact here means that whenever the commutator slide part comes into contact with the commutator shaft, the elastic contact area is the largest contact area, and the direction in which the commutator slide part extends is the same as An axial direction of the shaft center of the commutator is perpendicular to each other. If the commutator slide part on the brush piece does not achieve accurate elastic contact with the commutator shaft, it will cause electrical instability, and even arcs will occur between the commutator slide part and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/46H01R39/18H02K13/10
Inventor 周万顺
Owner 周万顺