Title:
MAGNETIC CIRCUIT STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2010/116921
Kind Code:
A1
Abstract:
Disclosed is a magnetic circuit structure for a motor or the like, said magnetic circuit structure provided with a rotor, which has rotor-side magnetic poles formed on the outer surface thereof, and a stator, which has stator magnetic poles formed on the inner surface thereof. An air gap is formed, where the rotor magnetic poles and the stator magnetic poles face each other, between the outer surfaces of the rotor magnetic poles and the inner surfaces of the stator magnetic poles. At least one pair of opposing indentation/protrusions is formed on the outer surfaces of the rotor magnetic poles and the inner surfaces of the stator magnetic poles, said indentation and protrusion facing each other along the axis of rotation. Each indentation/protrusion includes two or three steps in the radial direction. This increases the magnetic flux through the air gap, thereby increasing torque.
Inventors:
SANADA MASAYUKI (JP)
MORIMOTO SHIGEO (JP)
MORIMOTO SHIGEO (JP)
Application Number:
PCT/JP2010/055653
Publication Date:
October 14, 2010
Filing Date:
March 30, 2010
Export Citation:
Assignee:
UNIV OSAKA PREFECT PUBLIC CORP (JP)
SANADA MASAYUKI (JP)
MORIMOTO SHIGEO (JP)
SANADA MASAYUKI (JP)
MORIMOTO SHIGEO (JP)
International Classes:
H02K1/06; H02K1/14; H02K1/18; H02K1/24
Foreign References:
| JPH11299131A | 1999-10-29 | |||
| JP2004364368A | 2004-12-24 | |||
| JP2005124355A | 2005-05-12 | |||
| JPS6388071U | 1988-06-08 | |||
| JPH11289726A | 1999-10-19 | |||
| JP2008141900A | 2008-06-19 |
Attorney, Agent or Firm:
KASHIMA, YOSHIO (JP)
KAJIMA Yoshio (JP)
KAJIMA Yoshio (JP)
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