| 摘要 |
PURPOSE:To provide a vibration motor, in which two rotor parts can be rotated and a structure is simple and can be flattened and a rotational output can be generated efficiently. CONSTITUTION:The title vibrating motor has a stator part 40 and two rotor parts 30A, 30B. The stator part 40 contains ring piezoelectric elements 42, 44, ring-shaped electrode plates 46, 48 stacked on the surfaces of the piezoelectric elements 42, 44 and first and second plate block bodies 50 and 52 arranged in the manner of holding both sides of the electrode plates 46, 48 and piezoelectric elements 42, 44. Radial projections 62A, 62B are formed on both end faces 60A, 60B of the stator part 40. In a state where the second electrode plate 48 is earthed, further, a single-phase AC voltage having the resonance frequency of bending vibration is applied to the alternate ones out of split electrode plates 46 arranged on the ring, an elliptical vibration is generated on the projections 62A, 62B, and the rotor parts 30A, 30B are rotated. |
