Title:
Rotor structure of a stepping motor
Document Type and Number:
Japanese Patent JP6097538
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotor structure of a stepping motor, capable of covering at least a part of an outer peripheral opening surface between permanent magnets of a rotor of the stepping motor by a simple and easy-to-assemble structure, and stably keeping the covered state.SOLUTION: A rotor structure is composed of a rotation shaft 54; disc-shaped rotor collars 52 annularly fitting their center portions with the rotation shaft and vertically held; cylindrical permanent magnets 53 externally fitted with the rotor collars to be held, and alternately and continuously forming different pole magnetization areas in a circumferential direction; and a cover body 6 for annularly and oppositely fitting structure bodies 51 each composed of the permanent magnet and the rotor collar to the rotation shaft at a predetermined separation distance, and covering at least a part of an outer peripheral opening surface of a space formed by the opposite layout. The cover body is preferably a cylindrical body for blocking the outer peripheral opening surface, and is equipped with energizing means 62 for expanding itself in an axial direction of the rotation shaft.
Inventors:
Hisaaki Hoshi
Application Number:
JP2012267031A
Publication Date:
March 15, 2017
Filing Date:
December 06, 2012
Export Citation:
Assignee:
Oki Micro Technology Co., Ltd.
International Classes:
H02K37/14; H02K1/27
Domestic Patent References:
| JP2002051525A |
Attorney, Agent or Firm:
Hirofumi Mizuno
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