| 摘要 |
<p>A piezoelectric drive device has a piezoelectric actuator (4) that has a vibrator (20) with a piezoelectric element, and a rotor (30) that is rotated by the vibrator, an elastic device (50) that can store the rotational energy of the rotor as elastic energy, and a driven rotating body (60) that is rotated by the elastic energy stored by the elastic device. The elastic device is preferably a spiral spring (50) connected to a transmission wheel (60) and engaged by another transmission wheel (40).</p> |
