| 摘要 |
Disclosed is a vibrator which includes a housing having an interior space, an elastic member fixed to both ends of the housing, a piezoelectric device which is installed at the elastic member and is deformed when a power is applied to it, and a mass which is connected to the elastic member and amplifies vibration generated by the deformation of the piezoelectric device. The piezoelectric device includes an elastic layer stacked on at least one of the upper surface and the lower surface thereof. |
