Title:
METAL BEARING TYPE MOTOR
Document Type and Number:
Japanese Patent JP3254732
Kind Code:
B2
Abstract:
PURPOSE: To reduce torque ripples of a metal bearing type motor by a simple structure.
CONSTITUTION: A periodic variation in rotation of a rotor magnet 5 due to an inclination of a rotor shaft 7 is so controlled as to be cancelled under the of periodic control rotational speed of the magnet 5 by an auxiliary magnetic path M2 utilizing a leakage magnetic flux provided on an outer periphery of the magnet 5.
Inventors:
Toshihide Nakane
Minoru Kajiura
Yusuke Morinishi
Ken Higuchi
Minoru Kajiura
Yusuke Morinishi
Ken Higuchi
Application Number:
JP15619092A
Publication Date:
February 12, 2002
Filing Date:
May 25, 1992
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H02K21/24; H02P7/10; (IPC1-7): H02K21/24; H02P7/10
Domestic Patent References:
| JP458065U |
Attorney, Agent or Firm:
Atsuo Waki