Title:
PM STEPPING MOTOR
Document Type and Number:
Japanese Patent JP2015082942
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce noise of claw-pole PM stepping motor during drive.SOLUTION: In an inner yoke 111 constituting each stator of PM stepping motor having a structure coupling an A phase stator and a B phase stator, the positions of a dowel and a hole of the inner yoke 111 provided for bonding the inner yokes of two stators are symmetrical with respect to the axis of symmetry, i.e., a center line passing the intermediate position between two protrusions 111e to be fitted in the outer yoke and the center point of the inner yoke 111, and the angle θ of the position from the center line is in a range of 30°<θ<90°.
Inventors:
KEBUKAWA YUKITSUGU
ZHONG YAN
ZHONG YAN
Application Number:
JP2013221087A
Publication Date:
April 27, 2015
Filing Date:
October 24, 2013
Export Citation:
Assignee:
MINEBEA CO LTD
International Classes:
H02K37/14
Domestic Patent References:
| JP2007282479A | 2007-10-25 | |||
| JP2013211967A | 2013-10-10 | |||
| JPS59194658A | 1984-11-05 |
Foreign References:
| US7679258B2 | 2010-03-16 |
Attorney, Agent or Firm:
Suenari Mikio
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