Invention Grant
- Patent Title: Vibration wave actuator
- Patent Title (中): 振动波动作机构
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Application No.: US13091821Application Date: 2011-04-21
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Publication No.: US08643252B2Publication Date: 2014-02-04
- Inventor: Yuki Oda , Nobuyuki Kojima
- Applicant: Yuki Oda , Nobuyuki Kojima
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2010-109022 20100511; JP2010-148513 20100630
- Main IPC: H02N2/04
- IPC: H02N2/04

Abstract:
A vibration wave actuator includes a vibrator having at least an electro-mechanical energy conversion element and an elastic body to which the electro-mechanical energy conversion element is joined, with the elastic body including a contact portion formed therein, and a driven element that is in pressure contact with the contact portion of the vibrator and includes a magnetic substance. In addition, a vibrator holding portion holds the vibrator via a first elastic member having a stiffness lower than that of the vibrator, and a magnet is arranged on the vibrator holding portion such that the vibrator is placed between the driven element and the magnet.
Public/Granted literature
- US20110278987A1 VIBRATION WAVE ACTUATOR Public/Granted day:2011-11-17
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