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Brush motor commutator and forming method thereof

A technology of commutator and commutator, applied in the field of commutator, can solve the problems of destroying the sliding contact between the brush and the commutator, increasing wear, etc., and achieve the effect of reducing temperature rise and reducing wear

Inactive Publication Date: 2014-03-26
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When the commutation spark is strong, it will destroy the sliding contact between the brush and the commutator, which will increase the wear of both

Method used

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  • Brush motor commutator and forming method thereof
  • Brush motor commutator and forming method thereof
  • Brush motor commutator and forming method thereof

Examples

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Embodiment Construction

[0034] The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings. It can be understood that the drawings are provided for reference and illustration only, and are not intended to limit the present invention. The dimensions shown in the drawings are only for the convenience of clear description, and do not limit the proportional relationship.

[0035] figure 1 and figure 2 A commutator 10 applicable to a brushed motor according to a preferred embodiment of the present invention is shown. image 3 The basic body of the commutator 10 is shown. Figure 4 The segments of the commutator 10 are shown. Figure 5 The gas release components of diverter 10 are shown. Referring to the accompanying drawings, the commutator 10 includes a hollow electrical insulating base 12, a number of commutator segments 14 fixed t...

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Abstract

The invention discloses a brush motor commutator and a forming method thereof. The commutator comprises an electrically-insulating basal body and a plurality of commutator segments which are circumferentially distributed on the outer surface of the basal body in a spaced manner. The forming method of the commutator comprises a step of setting a plurality of electrically-insulating gas release components. Each gas release component has a gas release surface between two adjacent commutator segments, and a gas with an electrical conductivity less than the air can be released from the gas release surfaces. The gas release surfaces are lower than the outer surfaces of the commutator segments, so that a diffusion space is formed by the gas release surfaces and the two opposite side walls of two adjacent commutator segments. The gas released from the gas release components is diffused along the diffusion space, so as to inhibit sparking on the commutator and lower the abrasion of the sparkling on the brush and the commutator segments.

Description

technical field [0001] The invention relates to a commutator of a brushed motor, in particular to a spark suppression structure of the commutator. Background technique [0002] A brushed motor includes a stator and a rotor that rotates relative to the stator. The rotor includes a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft and adjacent to the rotor core, and a rotor winding wound on teeth of the rotor core and electrically connected to the commutator. The stator includes stator poles, power supply terminals, and at least one pair of brushes for sliding contact with the commutator segments of the commutator. The external power supply is supplied to the rotor winding through the power supply terminals, brushes and commutator. After the rotor winding is energized, the rotor magnetic field is formed, which interacts with the stator magnetic field to drive the rotor to rotate. [0003] During the commutation process, when the brush leaves a certain c...

Claims

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Application Information

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IPC IPC(8): H01R39/04H01R39/48H01R43/06
Inventor W·戈尔特刘清式
Owner JOHNSON ELECTRIC SHENZHEN
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