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Electric motor with brush unit

A brush device and motor technology, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve the problems of complex structure and reduced operability of the brush device, and achieve the effect of good assembly operability

Active Publication Date: 2020-01-14
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the number of brushes increases, the structure of the brush unit becomes complicated, so there is a possibility that the assembly workability will decrease

Method used

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  • Electric motor with brush unit
  • Electric motor with brush unit
  • Electric motor with brush unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Hereinafter, one embodiment of the present invention will be described using the drawings.

[0016] figure 1 It is an overall view of a brush device showing an example of the device of the present invention, and shows a state before a positive electrode brush assembly 11 and a negative electrode brush assembly 12 described later are combined. The brush device of the present embodiment is a device for supplying power to a commutator of a motor (not shown), and includes a positive-side brush assembly 11 and a negative-side brush assembly 12 . The positive-side brush assembly 11 and the negative-side brush assembly 12 are independently configured.

[0017] The positive side brush assembly 11 has a positive side plate 1, three brush holders 5 fixed to the positive side plate 1, brush springs (not shown) accommodated in the brush holders 5, and a positive electrode electrode accommodated in the brush holders 5. Brush 3. The positive electrode side plate 1 is a disk-shaped...

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PUM

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Abstract

In order to provide a brush device having excellent assembly workability, this brush device is equipped with: a positive-pole-side brush subassembly having a positive pole brush that supplies power to a commutator, a positive pole brush holder that holds the positive pole brush, and a positive-pole-side plate to which the positive pole brush holder is attached; and a negative-pole-side brush subassembly having a negative pole brush that supplies power to the commutator, a negative pole brush holder that holds the negative pole brush, and negative-pole-side plate to which the negative pole brush holder is attached. The positive-pole-side brush subassembly and the negative-pole-side brush subassembly are secured to each other or are positioned with respect to each other.

Description

technical field [0001] The invention relates to a brush device for a motor. Background technique [0002] In recent years, as an environment-friendly technology for vehicles, life extension, weight reduction, and size reduction of electric motors have been advanced. For example, in order to improve fuel efficiency, the electric motor used to start the engine has been reduced in size and weight, and it has been used to increase the life of the idle stop system. For example, the number of brushes of a motor has conventionally been two or four, but has been increased to six or more in response to reduction in size and longevity. As the number of brushes increases, the structure of the brush device becomes complicated, so there is a possibility that assembly workability may decrease. Here, a brush device is known in which two ring-shaped printed circuit boards are arranged on the outside, two guide plates made of an insulating material are arranged on the inside, and the two r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K13/00H02K5/14
CPCH02K5/14H02K13/00
Inventor 北岛慎悟小俣繁彦
Owner HITACHI ASTEMO LTD