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Title:
MOTOR
Document Type and Number:
Japanese Patent JP2011172301
Kind Code:
A
Abstract:

To provide a single-phase motor having a small cogging torque.

The motor 10 includes a wholly cylindrical magnet 11, a back yoke 21 disposed at an outer peripheral side of the magnet 11, a core 31 disposed at an inner peripheral side of the magnet 11, and a shaft 41 for supporting the magnet 11 and the back yoke 21. In the magnet 11, six tile-like magnet pieces 12 are disposed circumferentially and regularly at a prescribed gap 14. Each of the six magnet pieces 12 is radially magnetized in two poles along a circumferential direction. Also, teeth 34 whose quantity equals the number of magnetizations of the magnet 11 are formed in the core 31, and single-phase winding is wound.


Inventors:
TAKAHASHI HIROKI
Application Number:
JP2010030790A
Publication Date:
September 01, 2011
Filing Date:
February 16, 2010
Export Citation:
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Assignee:
MINEBEA CO LTD
International Classes:
H02K1/17; H02K21/22
Attorney, Agent or Firm:
仲 卓也
松下 毅



 
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