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Title:
MOTOR FOR ELECTRIC POWER STEERING APPARATUS
Document Type and Number:
Japanese Patent JP2009261244
Kind Code:
A
Abstract:

To obtain a motor for electric power steering apparatus, which reduces operation sound and torque ripple, and enhances a handle steering of a driver.

The motor for electric power steering apparatus includes: a yoke; a magnetic field part which is formed with ferrite permanent magnets of 4-poles fixed to an inner wall surface of the yoke; a shaft 4 rotatably mounted in the yoke; an armature 20 fixed to the shaft 4, which has a wiring formed by machine lap winding of a conductive wire on 22 pieces of slots formed extending in the axial direction on an outer circumference of a core 9; a commutator 6 composed of a plurality of segments 16 having hooks 34, which is fixed to an end of the shaft 4; and 4 pieces of brushes abutting surfaces of the commutator 6, which are arranged at a magnetically central position of a magnetic flux distribution of the above magnetic field part. The motor is attached to a column in an interior of a vehicle.


Inventors:
TANAKA TOSHINORI
IKEDA RYUICHI
YAMAMOTO KYOHEI
SAKABE MOICHI
DAIKOKU AKIHIRO
IMASHIRO AKIHIKO
YOSHIKUWA YOSHIO
Application Number:
JP2009182256A
Publication Date:
November 05, 2009
Filing Date:
August 05, 2009
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02K23/04; H02K13/04; H02K23/30
Domestic Patent References:
JPS6390971U1988-06-13
JPH09261932A1997-10-03
JPS63265556A1988-11-02
JPH08294259A1996-11-05
JPS58100471U1983-07-08
JPH05130752A1993-05-25
JPH09182385A1997-07-11
JPH06219306A1994-08-09
JPS62134371A1987-06-17
JPS57163183U1982-10-14
JPS61117587U1986-07-24
JPH01157250A1989-06-20
JPH0332197U1991-03-28
Foreign References:
DE19501750A11996-07-25
Attorney, Agent or Firm:
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Junichiro Yoshida



 
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