SUPPORTING STRUCTURE FOR TINY ULTRASONIC LINEAR ACTUATOR

摘要

A supporting structure for a tiny ultrasonic linear actuator is provided to increase degree of freedom in design and to expand a moving range of a moving body. A supporting structure for a tiny ultrasonic linear actuator includes an oscillation body, a moving shaft(120), and a moving body(130), an elastic body sheet supporting body(112), and a supplement supporting cap(200). The oscillation body consists of an elastic body sheet(112) and piezoelectric ceramic sheets(114,116). The elastic body sheet(112) is made of plates such as a brass plate. The piezoelectric ceramic sheets(114,116) are adhered on a front side, or a rear side, or both sides of the elastic body sheet(112). The moving shaft(120) is adhered vertically on the center of a surface of the front piezoelectric ceramic sheet of the oscillation body. The moving body(130) is inserted in the moving shaft(120) with friction and moves back and forth on the moving shaft(120). The supplement supporting cap(200) covers the tiny ultrasonic linear actuator for mounting on a printed circuit board or other units.