The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2020
Filed:
Aug. 02, 2016
Yuki Takahashi, Tokyo, JP;
Masami Kamijo, Tokyo, JP;
Kazutaka Sakaguchi, Tokyo, JP;
Yasutaka Kitamura, Tokyo, JP;
Masaharu Kagami, Tokyo, JP;
Shigenori Inamoto, Tokyo, JP;
Yuki Takahashi, Tokyo, JP;
Masami Kamijo, Tokyo, JP;
Kazutaka Sakaguchi, Tokyo, JP;
Yasutaka Kitamura, Tokyo, JP;
Masaharu Kagami, Tokyo, JP;
Shigenori Inamoto, Tokyo, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
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 and a coil that excites the pole tooth sections; and a spring material 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.