PIEZOELECTRIC ACTUATOR, TIME PIECE, AND PORTABLE DEVICE

摘要

A vibration board (10) composed of a rectangular laminate of a piezoelectric element and a reinforcement member is supported on a base by means of a support (11). The support (11) elastically urges the vibration board toward a rotor (100) so that a projection (36) provided on the vibration board (10) may come into contact with the periphery of the rotor (100). When the vibration board (10) is vibrated to the right and left by the application of voltage from a driver circuit (not shown), the rotor (100) rotates clockwise with the displacement of the projection (36).