Invention Grant
- Patent Title: Vibration actuator with plate springs including planar, spiral deformation arms
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Application No.: US17561956Application Date: 2021-12-26
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Publication No.: US12003156B2Publication Date: 2024-06-04
- Inventor: Yuki Takahashi , Chikara Sekiguchi , Shigeyuki Shimomura , Daisuke Kodama , Yuta Yoshii , Yasutaka Kitamura , Shigenori Inamoto
- Applicant: Yuki Takahashi , Chikara Sekiguchi , Shigeyuki Shimomura , Daisuke Kodama , Yuta Yoshii , Yasutaka Kitamura , Shigenori Inamoto
- Applicant Address: JP Tokyo
- Assignee: Minebea Mitsumi Inc.
- Current Assignee: Minebea Mitsumi Inc.
- Current Assignee Address: JP Nagano
- Priority: JP 18159790 2018.08.28
- Main IPC: H02K33/06
- IPC: H02K33/06

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.
Public/Granted literature
- US20220123642A1 VIBRATION ACTUATOR AND ELECTRONIC EQUIPMENT Public/Granted day:2022-04-21
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