Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/014212
Kind Code:
A1
Abstract:
A motor includes a stator having windings and a rotor which rotates upon being subjected to a rotating magnetic field produced by a driving current being fed to the windings. The rotor includes a rotor core and a first magnet magnetic pole, a second magnet magnetic pole, and a protrusion provided next to each other in the circumferential direction. For the first magnet magnetic pole, a permanent magnet provided to the rotor core is used. For the second magnet magnetic pole, a permanent magnet provided to the rotor core is used, and the second magnet magnetic pole has an opposite polarity to the first magnet magnetic pole. The protrusion is formed so as to project in the radial direction in the rotor core. The windings include a first winding and a second winding. The first winding and the second winding are excited at the same timing by a driving current, and are serially connected. The motor is configured so that the protrusion faces the second winding at the rotor rotation position at which the first magnet magnetic pole or the second magnet magnetic pole faces the first winding.
Inventors:
YOKOYAMA SEIYA (JP)
YAMADA YOJI (JP)
MIKAMI KOJI (JP)
HATTORI AKIHISA (JP)
YAMADA YOJI (JP)
MIKAMI KOJI (JP)
HATTORI AKIHISA (JP)
Application Number:
PCT/JP2016/071105
Publication Date:
January 26, 2017
Filing Date:
July 19, 2016
Export Citation:
Assignee:
ASMO CO LTD (JP)
International Classes:
H02K1/27
Foreign References:
| JP2001346368A | 2001-12-14 | |||
| JP2002252941A | 2002-09-06 | |||
| JPH09285088A | 1997-10-31 |
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
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