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Title:
ELECTRIC MOTOR
Document Type and Number:
Japanese Patent JP2011147239
Kind Code:
A
Abstract:

To prevent electric erosion in a bearing caused by high-frequency current passage through winding.

An electric motor includes a rotor 1, a stator 2 having winding 23, a bearing 3 that rotatably supports the rotor 1 on the stator 2, and a conducting means for establishing conduction between the inner ring 31 and the outer ring 32 of the bearing 3. The conducting means includes a conductive spring member 42 one end of which is connected to either of the inner ring 31 and the outer ring 32 of the bearing 3, and conductors 41, 43 connected to the other end of the spring member 42 and the other of the inner ring 31 and the outer ring 32 of the bearing 3.


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Inventors:
MAEDA TAKUYA
TAKESHITA MAKOTO
YAMAMOTO KAZUHIRO
Application Number:
JP2010004921A
Publication Date:
July 28, 2011
Filing Date:
January 13, 2010
Export Citation:
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Assignee:
FANUC LTD
International Classes:
H02K5/16; F16C35/067; F16C41/00
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Ryuichi Nishimura
Hirose Shigeki
Kazuo Maejima



 
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