Title:
PROPORTIONAL ROTARY TORQUER
Document Type and Number:
Japanese Patent JP3887342
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize displacing of a proportional rotary torquer to an arbitrary rotary angle position in response to the amplitude and the energizing direction of an exciting current with a simple structure.
SOLUTION: Salient poles 3a, 3b formed in a rotor core 3 are formed drawing a circular arc having a diameter at its central part different from the diameter at a boundary part on the opposed surfaces to permanent magnets 1a, 1b. An angle K between the connecting lines of a boundary end point of both the ends of the salient poles 3a, 3b and a rotating center is formed to become about 100° or more. The permanent magnets 1a, 1b are formed of circular arc surfaces having different central positions so that the thickness B of the pole boundary part becomes about 90-95% of the thickness A of the central part of the poles.
Inventors:
Zhao
Application Number:
JP2003100832A
Publication Date:
February 28, 2007
Filing Date:
April 03, 2003
Export Citation:
Assignee:
Minebea Co., Ltd.
International Classes:
H02K21/26; H02K33/00; H02K1/17; H02K23/04; H02K23/40; H02K26/00; (IPC1-7): H02K33/00; H02K1/17; H02K21/26
Domestic Patent References:
| JP9163708A | ||||
| JP7046813A | ||||
| JP7023555A | ||||
| JP2002218724A | ||||
| JP6153424A | ||||
| JP2000262030A |
Attorney, Agent or Firm:
Suenari Mikio