Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2013/099195
Kind Code:
A1
Abstract:
A rotating section of the motor includes a plurality of magnets which is arranged in a circumferential direction, a rotor core having an outer peripheral surface which comes into contact with the radially inner surfaces of the magnets, and a magnet holder which holds the magnets between the magnet holder and the rotor core. The magnet holder has a columnar portion axially extending between adjacent magnets among the plurality of magnets, and a wall surface spreading in a circumferential direction from the columnar portion. The wall surface is in contact with the surface arranged radially outer than a circumferential end face of the magnet. Further, the circumferential end face on at least one side of the magnet faces the columnar portion with a gap interposed therebetween in the circumferential direction. For this reason, even if some of the magnets are formed larger than a design dimension, deformation of the columnar portion by the magnet does not easily occur. Therefore, an obstacle in disposing of another magnet also does not easily occur.
Inventors:
HAGA HIDEHIRO (JP)
AONO MASATO (JP)
HATTORI TAKASHI (JP)
AONO MASATO (JP)
HATTORI TAKASHI (JP)
Application Number:
PCT/JP2012/008218
Publication Date:
July 04, 2013
Filing Date:
December 21, 2012
Export Citation:
Assignee:
NIDEC CORP (JP)
HAGA HIDEHIRO (JP)
AONO MASATO (JP)
HATTORI TAKASHI (JP)
HAGA HIDEHIRO (JP)
AONO MASATO (JP)
HATTORI TAKASHI (JP)
International Classes:
H02K1/27
Domestic Patent References:
| WO2006008964A1 | 2006-01-26 |
Foreign References:
| JP2009261191A | 2009-11-05 | |||
| JP2001169485A | 2001-06-22 | |||
| US20020162939A1 | 2002-11-07 | |||
| JP2004023944A | 2004-01-22 |
Other References:
See also references of EP 2798724A4
Download PDF:
Claims: