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Title:
ROTATING ELECTRICAL MACHINE
Document Type and Number:
Japanese Patent JP2010124526
Kind Code:
A
Abstract:

To secure stable pressing force even when a brush wears out, and suppress the unnecessary wear of the brush, in a rotating electrical machine.

The rotating electrical machine includes an energizing spring 46, which gives energizing force in the direction of energization to the brush 34, as a pressing mechanism 40, which gives the pressing force of the brush 34 to a slip ring 30, and a pressing part 70, which is attached to the brush 34 and has predetermined outline profile. The predetermined profile receives its energizing force in the contact position of a roller 42 at the tip of an energizing spring 46, and generates the component of force in the pressing direction of a brush 34, according to the profile in the contact position, and gives pressing force to the brush 34. When the brush 34 wears out, the contact position changes, and the magnitude of the energizing force changes, and also the angle that the normal direction of the profile in the contact position and the energizing direction make changes, whereby it keeps the energizing force to the slip ring 30 of the brush 34 in a specified range.


Inventors:
TSUCHIYA EIJI
HAYAKAWA KISABURO
WATANABE TAKAO
NAGASAWA YUJI
TARUYA ICHIRO
ASAUMI SHU
KITAHATA TAKESHI
Application Number:
JP2008293194A
Publication Date:
June 03, 2010
Filing Date:
November 17, 2008
Export Citation:
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Assignee:
TOYOTA CENTRAL RES & DEV
TOYOTA MOTOR CORP
International Classes:
H02K13/00; H01R39/38
Domestic Patent References:
JP2008172934A2008-07-24
JPS4112691B1
JP2006197695A2006-07-27
JPS61118987A1986-06-06
JP2001178084A2001-06-29
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida