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Title:
ELECTRIC MOTOR AND ROTOR
Document Type and Number:
Japanese Patent JP2011045156
Kind Code:
A
Abstract:

To provide an electric motor and a rotor that can be manufactured at low cost wherein it is possible to reliably fix a permanent magnet on a rotor body, without using an adhesive or a holder made of synthetic resin.

The rotor 20 of the electric motor is constructed, by fixing multiple permanent magnets 21 on the outer circumferential surface 28c of the cylindrical rotor body 28 at equal intervals in the circumferential direction. The rotor body 28 is made of a ferromagnetic material, and recessed portions 30 are formed in the outer circumferential surface 28c of the rotor body 28. The portions of the permanent magnets 21 on the inner circumferential side are fit in the recessed portions, which arrest the movement of the permanent magnets 21 in the circumferential direction.


Inventors:
SAKATA TAKATOSHI
Application Number:
JP2009189719A
Publication Date:
March 03, 2011
Filing Date:
August 19, 2009
Export Citation:
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Assignee:
JTEKT CORP
International Classes:
H02K1/27; H02K7/14
Domestic Patent References:
JP2004048970A2004-02-12
JPS61280746A1986-12-11
JP2009131070A2009-06-11
Attorney, Agent or Firm:
Norihiko Hibi
Einosuke Kishimoto
Akira Watanabe
Matsumura Naoto



 
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