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1. (WO2017022243) ACTUATOR AND ELECTRIC BEAUTY DEVICE

Pub. No.:    WO/2017/022243    International Application No.:    PCT/JP2016/003562
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Wed Aug 03 01:59:59 CEST 2016
IPC: H02K 33/16
Applicants: MITSUMI ELECTRIC CO., LTD.
ミツミ電機株式会社
TAKAHASHI, Yuki
高橋 勇樹
KAMIJO, Masami
上條 昌実
SAKAGUCHI, Kazutaka
坂口 和隆
KITAMURA, Yasutaka
北村 泰隆
KAGAMI, Masaharu
加賀美 雅春
INAMOTO, Shigenori
稲本 繁典
Inventors: TAKAHASHI, Yuki
高橋 勇樹
KAMIJO, Masami
上條 昌実
SAKAGUCHI, Kazutaka
坂口 和隆
KITAMURA, Yasutaka
北村 泰隆
KAGAMI, Masaharu
加賀美 雅春
INAMOTO, Shigenori
稲本 繁典
Title: ACTUATOR AND ELECTRIC BEAUTY DEVICE
Abstract:
The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a turning shaft and a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding the turning shaft in the circumferential direction; and a fixed body provided with a bearing into which the turning shaft is inserted, pole tooth surfaces disposed facing the peripheral surface of a magnet section so as to surround the bearing in the circumferential direction, of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections with polarities alternating in the circumferential direction by current being supplied. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the turning shaft in the circumferential direction. The bearing is a magnetic body.