- Patent Title: Linear ultrasonic motor and optical apparatus including the same
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Application No.: US14892147Application Date: 2014-06-06
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Publication No.: US09917536B2Publication Date: 2018-03-13
- Inventor: Takumi Yamanaka , Kazuhiro Noguchi
- 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: JP2013-120737 20130607
- International Application: PCT/JP2014/003046 WO 20140606
- International Announcement: WO2014/196212 WO 20141211
- Main IPC: H02N2/10
- IPC: H02N2/10 ; H02N2/00 ; H02N2/02 ; G02B7/08 ; H02N2/12

Abstract:
A driving apparatus according to the present invention includes: a movable part including a vibrator including a piezoelectric element and a pressurization part for bringing the vibrator into pressure contact with a base part by applying impression force to the vibrator, the movable part being linearly driven; and a cover part for receiving reactive force of the impression force through intermediation of a rolling part, the cover part being fixed to the base part by a holding part extending in a direction crossing a movement direction of the movable part, in which the rolling part is sandwiched by a guide part of the movable part extending in the movement direction of the movable part and a cover guide part of the cover part extending in the movement direction of the movable part, and the movable part is positioned on an outer side beyond a side of the holding part facing the movable part.
Public/Granted literature
- US20160111979A1 LINEAR ULTRASONIC MOTOR AND OPTICAL APPARATUS INCLUDING THE SAME Public/Granted day:2016-04-21
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