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Title:
DYNAMO-ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2003189550
Kind Code:
A
Abstract:

To solve a problem that a pigtail buried in a brush eventually touches a commutator when the brush wears away to cause cracking or chipping of the brush and other component is damaged during rotation to cause a trouble in recycling.

The brush pressing end of a spring 15 is shifted to the commutator 5 side as a brush 6 wears away. When the clearance between a pigtail 16 and a commutator 5 becomes α, the brush pressing end of the spring 15 abuts against the wall part 17 and the pressing force of the spring 15 against the brush 6 is substantially eliminated. Consequently, contact resistance of the brush 6 and the commutator 5 increases to cause incomplete conduction and the lifetime expires. Since the pigtail 16 does not touch the commutator 5 even if the lifetime expires, the brush 5 is protected against cracking or chipping, and damage of each component in the starter motor is avoided thus promoting recycling.


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Inventors:
KITAGAWA AOFUMI
Application Number:
JP2001380098A
Publication Date:
July 04, 2003
Filing Date:
December 13, 2001
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H01R39/38; H02K13/00; (IPC1-7): H02K13/00; H01R39/38
Attorney, Agent or Firm:
Kenji Ishiguro



 
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