| 摘要 |
PURPOSE:To provide a piezoelectric driver in which a mobile body can be easily operated manually at the time of emergency. CONSTITUTION:The piezoelectric driver comprises a magnetic oscillator 1 comprising a piezoelectric element 4, a permanent magnet mobile body 2 being attracted to the oscillator 1 and moves unilaterally through oscillation of the oscillator 1, and a magnetic manual operating member 3 disposed to approach and separate to/from the body 2 so that attraction force is weakened to allow manual operation of the body 2 when the member 3 approaches the body 2. |
