Title:
【発明の名称】ステッピングモータ及びそれに用いられるヨークの製造方法
Document Type and Number:
Japanese Patent JP2854522
Kind Code:
B2
Abstract:
In a stepping motor, stator yokes have a plurality of comb-tooth-shaped magnetic poles 5b, 6b, 7b and 8b in such a manner that the comb-tooth-shaped magnetic poles are opposed to each other coaxially to a rotor portion made from a permanent magnet magnetized to have multiple magnetic poles, and an excitation coil is fitted on the external circumference of the stator yokes and the excitation coil and the stator yokes are surrounded by a frame yoke. Each of the yokes is formed of an Fe-Cr alloy having a predetermined ferrite single-phase structure so that occurrence of eddy currents in an alternating-current magnetic field is suppressed.
Inventors:
WATANABE KAZUYUKI
NAKANO HIROFUMI
TAKEMOTO TOSHIHIKO
HIROTA RYUJI
NAKANO HIROFUMI
TAKEMOTO TOSHIHIKO
HIROTA RYUJI
Application Number:
JP19714294A
Publication Date:
February 03, 1999
Filing Date:
August 01, 1994
Export Citation:
Assignee:
FUJI DENKI KAGAKU KK
NITSUSHIN SEIKO KK
NITSUSHIN SEIKO KK
International Classes:
H02K1/02; H02K37/14; (IPC1-7): H02K37/14
Domestic Patent References:
| JP598352A | ||||
| JP578186U |
Attorney, Agent or Firm:
Shinichi Matsui