US 7,602,104 B2
Ultrasonic motor and pressing mechanism of ultrasonic vibrator
Tetsuyuki Sakamoto, Tokyo (Japan)
Assigned to Olympus Corporation, Tokyo (Japan)
Filed on Jan. 07, 2008, as Appl. No. 11/970,252.
Claims priority of application No. 2007-010336 (JP), filed on Jan. 19, 2007.
Prior Publication US 2008/0174206 A1, Jul. 24, 2008
Int. Cl. H02N 2/00 (2006.01)
U.S. Cl. 310—323.09  [310/323.17] 7 Claims
OG exemplary drawing
 
1. A pressing mechanism of an ultrasonic vibrator for pressing sliding members against a driven member, the sliding members being provided at two or more positions corresponding to antinodes of a standing wave vibration of the ultrasonic vibrator, the pressing mechanism comprising:
a pressing member configured to make contact with the ultrasonic vibrator at two or more positions corresponding to nodes of the standing wave vibration of the ultrasonic vibrator; and
pressing-force adjusting units configured to adjustably apply pressing forces, which press the sliding members against the driven member, to the pressing member at two or more positions which are separated in the direction of a gap between the two or more nodes of the standing wave.