Invention Grant
- Patent Title: Vibration actuator
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Application No.: US16304579Application Date: 2017-04-14
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Publication No.: US10680501B2Publication Date: 2020-06-09
- Inventor: Shin Odajima
- Applicant: Nidec Copal Corporation
- Applicant Address: JP Tokyo
- Assignee: Nidec Copal Corporation
- Current Assignee: Nidec Copal Corporation
- Current Assignee Address: JP Tokyo
- Agency: Troutman Sanders LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7142fe7c
- International Application: PCT/JP2017/015376 WO 20170414
- International Announcement: WO2017/203890 WO 20171130
- Main IPC: H02K33/16
- IPC: H02K33/16 ; B06B1/04

Abstract:
A vibration actuator has a frame; a first spring, supported on one end within the frame and the other end vibrates along an axial direction. A second spring, supported on one end within the frame, and the other end vibrates along the axial direction. A first weight connected to the other end of the first spring and a second weight connected to the other end of the second spring. A magnet portion protrudes in the axial direction is in the first weight and a coil wrapped around the magnet portion is in the second weight. A driving current of a frequency that is a first resonant frequency set by the spring constant of the first spring and the mass of the first weight or a second resonant frequency set by the spring constant of the second spring and the mass of the second weight is applied to the coil.
Public/Granted literature
- US20190372446A1 VIBRATION ACTUATOR Public/Granted day:2019-12-05
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