Invention Grant
- Patent Title: Vibration wave motor
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Application No.: US15158900Application Date: 2016-05-19
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Publication No.: US10199960B2Publication Date: 2019-02-05
- Inventor: Ryo Yamasaki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2015-108338 20150528
- Main IPC: H02N2/00
- IPC: H02N2/00 ; H02N2/02

Abstract:
A vibration wave motor includes: a vibrator including a vibration plate and a piezoelectric element; a friction member frictionally contacting the vibrator; a pressing member generating a pressing force to bring the vibrator in frictional contact with the friction member; and a pressing force transmitting member between the vibrator and the pressing member to transmit the pressing force to the vibrator. The vibrator and the friction member move in a relative movement direction by an elliptical vibration, and the pressing force transmitting member includes: an engagement portion formed near a contact portion with the pressing member and engaged with the pressing member; a first restricting portion restricting movement in the relative movement direction; and a second restricting portion. restricting movement in a direction perpendicular to a pressing direction by the pressing member and the direction. The pressing force transmitting member is rotatably held with respect to the pressing member.
Public/Granted literature
- US20160352256A1 VIBRATION WAVE MOTOR Public/Granted day:2016-12-01
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