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:
Jun. 04, 2024
Filed:
Dec. 26, 2021
Yuki Takahashi, Tokyo, JP;
Chikara Sekiguchi, Tokyo, JP;
Shigeyuki Shimomura, Tokyo, JP;
Daisuke Kodama, Tokyo, JP;
Yuta Yoshii, Tokyo, JP;
Yasutaka Kitamura, Tokyo, JP;
Shigenori Inamoto, Tokyo, JP;
Yuki Takahashi, Tokyo, JP;
Chikara Sekiguchi, Tokyo, JP;
Shigeyuki Shimomura, Tokyo, JP;
Daisuke Kodama, Tokyo, JP;
Yuta Yoshii, Tokyo, JP;
Yasutaka Kitamura, Tokyo, JP;
Shigenori Inamoto, Tokyo, JP;
Minebea Mitsumi Inc., Nagano, JP;
Abstract
A vibration actuator includes: a movable body including: a disk-shaped magnet; a pair of disk-shaped cores fixed on front and rear surfaces of the disk-shaped magnet and each having an opening at a center thereof; a pair of leaf springs having a substantially circular shape; and a pair of spring stopper weight parts each having one end positioned by joining the opening to be joined with one of the disk-shaped cores and having another end connected to a central part of one of the leaf springs; and a fixing body including an annular coil and configured to support and accommodate therein the movable body such that the disk-shaped magnet, the disk-shaped cores and the spring stopper weight parts are capable of vibrating in an axial direction inside the annular coil.