ACTUATOR AND ELECTRIC BEAUTY DEVICE

WIPO Patent Application WO/2017/022242

A1

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.

TAKAHASHI YUKI
KAMIJO MASAMI
SAKAGUCHI KAZUTAKA
KITAMURA YASUTAKA
KAGAMI MASAHARU
INAMOTO SHIGENORI

PCT/JP2016/003561

February 09, 2017

August 02, 2016

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MITSUMI ELECTRIC CO LTD (JP)
TAKAHASHI YUKI
KAMIJO MASAMI
SAKAGUCHI KAZUTAKA
KITAMURA YASUTAKA
KAGAMI MASAHARU
INAMOTO SHIGENORI

H02K33/16; B06B1/04; B26B19/28

JP2014093833A	2014-05-19
JP2007113634A	2007-05-10
JP2004343932A	2004-12-02

See also references of EP 3334019A4

WASHIDA, Kimihito (JP)

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