| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric actuator capable of realizing miniaturization and high torque using a piezoelectric element and driving a movable body through fluid such as oil. <P>SOLUTION: This piezoelectric actuator comprises a vibrator having the piezoelectric element 1, the movable body 5 having a recess 5a, and a fluid 100 intervened between the vibrator and the movable body 5. The movable body 5 is driven by the pressure of the fluid 100 generated by the vibration of the vibrator. <P>COPYRIGHT: (C)2004,JPO |
