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Electric brush

A technology of brushes and metal brushes, applied in circuits, current collectors, electrical components, etc., can solve problems such as low operating efficiency, poor stability, and short life, and achieve low brush wear rate, improved wear resistance, and low Effect of Coefficient of Friction

Active Publication Date: 2020-06-05
SUZHOU DONSUN CARBONWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the general domestic brushes have low operating efficiency, poor stability, and short life, and domestic brush factories cannot meet the needs of this type of motor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] 1) Prepare materials (parts) according to the following weight ratio:

[0083]

[0084] Among them, the natural graphite is T399.9; the synthetic graphite particle size is ≤325 mesh, the carbon content is ≥99.9%, the fixed carbon content is ≥80%, the moisture content is ≤0.5%, and the ash content is ≤0.5%; the asphalt is selected from Coal tar pitch with a softening point of 95-110°C, coking value ≈ 55%, toluene insoluble matter content ≈ 25%, ash content 3 , with a particle size of ≤325 mesh; the silver powder is flaky silver powder with a purity of 99.9%, and a powder particle size of ≤80nm; the friction-reducing material is a mixture of molybdenum disulfide and tungsten disulfide, wherein the weight of molybdenum disulfide and tungsten disulfide The ratio of molybdenum disulfide and tungsten disulfide is 3:1; the particle size of molybdenum disulfide and tungsten disulfide is 3000-4000 mesh, and the purity is 99%; the additives include hexagonal boron nitride and c...

Embodiment 2

[0119] 1) Prepare materials (parts) according to the following weight ratio:

[0120]

[0121] Among them, the natural graphite is T399.9; the synthetic graphite particle size is ≤325 mesh, the carbon content is ≥99.9%, the fixed carbon content is ≥80%, the moisture content is ≤0.5%, and the ash content is ≤0.5%; the asphalt is selected from Coal tar pitch with a softening point of 95-110°C, coking value ≈ 55%, toluene insoluble matter content ≈ 25%, ash content 3 , with a particle size of ≤325 mesh; the silver powder is flaky silver powder with a purity of 99.9%, and a powder particle size of ≤80nm; the friction-reducing material is a mixture of molybdenum disulfide and tungsten disulfide, wherein the weight of molybdenum disulfide and tungsten disulfide The ratio of molybdenum disulfide and tungsten disulfide is 3:1; the particle size of molybdenum disulfide and tungsten disulfide is 3000-4000 mesh, and the purity is 99%; the additives include hexagonal boron nitride and c...

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Abstract

The invention discloses an electric brush. The electric brush comprises a metal electric brush limiting box and an electric brush material fixed in the metal electric brush limiting box, wherein the electric brush material is prepared by mixing carbon matrix powder with metal powder, an antifriction material and the like, performing compression molding by using a mechanical press or a hydraulic press, and performing machining treatment after sintering. The electric brush prepared by the method is especially suitable for a low-voltage direct-current high-efficiency dust collector and can also be used for alternating-current direct-current motors for kitchen appliances, such as wall breaking machines, juicers or other fields. The electric brush prepared through the method is high in motor efficiency, good in electric brush commutation performance, low in noise, long in service life, low in spark grade and good in product stability in the operation process of the motor, and is an energy-saving electric brush for a direct-current motor.

Description

technical field [0001] The invention relates to a brush for a motor, in particular to an energy-saving brush for a DC low-voltage vacuum cleaner motor, which belongs to the field of motors and is widely used in motors for DC vacuum cleaners and kitchen appliances. [0002] technical background [0003] The brush is a conductive part used in the motor to contact the commutator or slip ring to form an electrical connection. As a sliding contact body that imports and exports current, it has good electrical conductivity, thermal conductivity and lubrication performance, and has certain mechanical strength. Resist the instinct to reverse sparks. [0004] The development of modern industry promotes the types of motors and the working conditions of use to become more and more diversified. Various types of brushes are required to meet the requirements of various motors. The types of brushes are becoming more and more abundant with the development of the motor industry. . [0005] C...

Claims

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Application Information

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IPC IPC(8): H01R39/22H01R43/12
CPCH01R39/22H01R43/12
Inventor 殷玲吴爱民
Owner SUZHOU DONSUN CARBONWARE CO LTD
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