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Patent Searching and Data


Title:
ELECTRICAL ROTATING MACHINE AND ITS ROTOR
Document Type and Number:
Japanese Patent JPH10322946
Kind Code:
A
Abstract:

To easily rotate a motor or the like at a start and rotate it stably during rotation.

In a rotor core 11a, a plurality of spaces 19, 19,... are made. Permanent magnets 35, 35,... are fixed to the rotary shaft side of each space 19, 19,..., and a iron powder 30 is put in each space 19. When a motor is stationary, the iron powder 30 sticks to the permanent magnet 35, so that the inertial moment of the rotor 10a becomes small, and during the rotation of the motor, the centrifugal force applied to the iron powder 30 surpasses the magnetic force of the permanent magnet 35, and the iron powder 30 is positioned on the outer periphery side of the space 19, so that the inertial moment of the rotor 10a becomes large.


Inventors:
ENOMOTO YUJI
TANEDA KOKI
SAKAI TOSHIHIKO
HIRAMATSU HIROMICHI
YAMAMOTO NORIAKI
ISHIGAMI TAKASHI
ITO MOTOYA
TAJIMA FUMIO
KUWABARA HEIKICHI
OSONE YASUO
SHIBUKAWA SUETARO
SENOO MASAHARU
Application Number:
JP12237997A
Publication Date:
December 04, 1998
Filing Date:
May 13, 1997
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H02K1/22; H02K1/27; H02K7/02; (IPC1-7): H02K1/22; H02K1/27; H02K7/02
Attorney, Agent or Firm:
Kazuko Tomita