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Brush apparatus for an electric machine and electric machine

A brush device and brush technology are used in electromechanical devices, starting devices with mechanical power storage, and motor starting for engines, etc., which can solve problems such as starter failures and achieve the effect of preventing damage or danger.

Active Publication Date: 2012-05-16
SEG AUTOMOTIVE GERMANY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overload conditions can arise from triggering the starter for too long without starting the internal combustion engine, as well as from internal starter failures

Method used

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  • Brush apparatus for an electric machine and electric machine
  • Brush apparatus for an electric machine and electric machine
  • Brush apparatus for an electric machine and electric machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 A partial axial cross-section of an electric machine 1 with a brush arrangement 2 is shown. The brush arrangement 2 is constructed with brush pairs, wherein figure 1 Two brushes 3 , 34 are shown, which run on the commutator 4 . Springs, not shown, are pretensioned in the brush holder 5 to press the brushes 3 against the commutator 4 . The brush holder 5 is fixed on the brush plate 6 .

[0037] figure 1 It is shown that the brush holder 5 is fastened via an undercut to the brush plate 6 via a so-called groove-spring connection. The annular projection 7 of the brush plate 6 engages in the groove 8 of the brush holder 5 . As a result, the brush holder 5 is fixed on the brush plate 6 on the axial end side. On the opposite axial end side, the brush holder 5 , 54 is inserted into the annular busbar 10 with the groove 9 . The bus bar 10 thus serves as a second fastening element for holding the brush holder 5 . The bus bar 10 is connected to a starter relay, wh...

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PUM

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Abstract

The invention relates to an electric machine (1), especially a starter for an internal combustion engine, comprising a commutator (4) and a brush apparatus (2), brushes (3) being arranged on the commutator (4) in such a manner that at least one pair of brushes can rotate off-set from each other, every brush (3) being held in a brush holder (5), every brush holder (5) being fastened to an axial face on a brush plate (6), every brush (3) being alternately switchable in series either with a negative pole or a positive pole by a current conducting device (18, 19) to give a pair of brushes, and the brush plate (6) with connecting leads (24, 25, 26) leading to brushes (3) on the negative pole side and a busbar (10) with connecting leads (21, 22, 23) leading to brushes (3) on the positive pole side forming a respective current conducting device (18, 19). In order to protect the brush apparatus (2) from thermal overloads in an easy manner, at least one current conducting device (18, 19) is designed to have a unit for reducing heat dissipation.

Description

technical field [0001] The invention relates to a brush arrangement for an electric machine, in particular a starter for starting an internal combustion engine, the brush arrangement having brushes comprising at least one pair of brushes, wherein the brushes are arranged in a brush holder , each brush holder is fixed at least on the axial end side of the brush plate, and each brush can be alternately connected in series with the negative pole or the positive pole through the conductive device leading to the brush pair, with a connection to the negative pole side brush The brush plates of the litz wires and the busbars with the connecting litz wires leading to the positive-side brushes are each designed as a conductive device. [0002] The invention also relates to an electric machine, in particular a starter for an internal combustion engine, having a commutator and in particular a brush arrangement as described above, wherein the brushes with at least one brush pair can be ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/14H02K13/00H01R39/59H01R39/20H01R39/38
CPCF02N11/00H02K5/148H01R2201/10H01R39/383H01R13/7137H02K9/28F02N15/00H01R2201/26H01R39/20H02K2205/06
Inventor T・博岑哈德M・拜尔W・格施维茨
Owner SEG AUTOMOTIVE GERMANY GMBH
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