| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an actuator for moving a driven member accurately by forming the driven member into a triangular prism and clamping it by drive members from the opposite sides, thereby preventing the occurrence of chattering between the driven member and the drive member. <P>SOLUTION: Piezoelectric elements 32A and 32B of the actuator 30 are arranged on the opposite sides of the driven member 26 to clamp it. Drive members 34A and 34B are fixed to one end face of the piezoelectric elements 32A and 32B in the displacing direction, and the drive members 34A and 34B are biased by a retaining spring 36 and pressed against the driven member 26. The driven member 26 is formed into a triangular prism and the drive members 34A and 34B engage frictionally with its side face. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
