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:
Oct. 17, 2023
Filed:
Oct. 05, 2021
Nidec Sankyo Corporation, Nagano, JP;
Masaaki Ando, Nagano, JP;
NIDEC SANKYO CORPORATION, Nagano, JP;
Abstract
The actuator includes a magnetic drive mechanism to relatively move the movable body with respect to the support body. The magnetic drive mechanism has a magnet and a coil. The connecting element connected to the support body and the movable body is a viscoelastic member. The viscoelastic member has a temperature characteristic that a loss tangent (Tan δ) thereof measured by a dynamic viscoelasticity measurement decreases as a temperature rises. When using a silicone gel as the connecting element, the decrease in the peak value of the acceleration of the movable body caused by the decrease in the current flowing through the coil is cancelled by the increase in the peak value of the acceleration of the movable body caused by the decrease in Tan δ of the silicone gel. Therefore, the oscillation of the movable body is unchanged even if a temperature changes.