| 摘要 |
PURPOSE:To stabilize working against the variation of a load, by permitting a mover to come in pressure contact with the position of less influence to the amplitude of the oscillation of a driver due to the variation of resonance frequency, or only near the position. CONSTITUTION:On the rear surface of an elastic unit 7, a piezoelectric unit 8 is put together to compose a driver 9. At the position P of less influence due to the resonance frequency of the driver 9, a projection 13 for taking out mechanical output is set. A mover 12 consisting of an elastic unit 11 and a slider 10 is pressure-set to come in contact with the projection 13. When the piezoelectric unit 8 is driven by two AC electric-fields different in timing from each other in phase by 90 deg., then the progressive wave of bending vibration is passed onto the driver 9, and the mover 12 is rotated. |
