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:
Sep. 13, 2022
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 has a movable body and a fixing body. The movable body includes: a disk-shaped magnet; annular cores each having an opening at a center thereof; and spring stopper weight parts, and stacked such that the magnet is disposed at a center of the movable body, the annular cores is fixed on front and rear surfaces of the magnet in its axial direction, and the spring stopper weight parts are joined with the annular cores at the opening. Each spring stopper weight part includes: a spring fixing part connecting to one of the elastic support parts; a joining protrusion part inserted into the opening of one of the annular cores; and a weight body part provided between the spring fixing part and the joining protrusion part, having a larger diameter, and disposed to face and join with an annular surface of one of the annular cores.