| 摘要 |
PURPOSE: A vibrator having a piezoelectric device mounted is provided to improve shock resistance by restricting a vertical moving distance and a transverse moving distance of a vibration unit. CONSTITUTION: An upper surface or a lower surface of a case is combined with a vibration generation target object. A vibration unit(20) is combined with the inside of the case. A piezoelectric device(30) is combined with the vibration unit. The piezoelectric device vibrates the vibration unit in the up-down direction. A power supply unit(40) applies power to the piezoelectric device. |
