Search International and National Patent Collections

1. (WO2017022242) ACTUATOR AND ELECTRIC BEAUTY DEVICE

Pub. No.:    WO/2017/022242    International Application No.:    PCT/JP2016/003561
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
B06B 1/04
B26B 19/28
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:
Provided is an actuator that has a simple configuration and can stably achieve high output. This actuator has: a movable body provided with a cylindrical magnet section alternately having N-pole faces and S-pole faces on a peripheral surface thereof along the circumferential direction; a fixed body provided with pole tooth surfaces disposed facing the peripheral surface a magnet section 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; and a spring material that is connected to the freely movable body and the fixed body and holds the movable body to the fixed body in a freely movable manner. The spring material is fixed to at least one of the movable body and the fixed body via a joint section. The joint section has a fixing part for fixing and end section of the spring material, and a stress relaxation part that is disposed in proximity to the fixing part and relaxes stress generated during deformation of the spring material.