PIEZOELECTRIC ACTUATOR, AND TIMEPIECE AND PORTABLE UNIT WITH PIEZOELECTRIC ACTUATOR

摘要

A diaphragm (10) is fixed to a bottom board (102) by a screw (13). A lever (20) is formed with a spring section (23), a rotor attaching section (25), and an insertion hole (22), the insertion hole (22) having a shaft (21) inserted therein to turnably support the lever (20) on the shaft. The spring section (23) is abutted against an eccentric pressure-adjusting cam (26), the latter being turned to change the elastic force of the spring section (23) so as to adjust the pressing force actuating the diaphragm (10) through a rotor (100).