| 摘要 |
PURPOSE: A piezoelectric vibration module is provided to maintain durability despite the dropping of and external impacts to a product. CONSTITUTION: A piezoelectric vibration module(100) includes a piezoelectric actuator, an upper case(110) which has an inner space so that the piezoelectric actuator is linearly vibrated and a cocking unit which protrudes downward; and a lower case(140) which closes the inner space of the upper case by being combined with the lower portion of the upper case and has a groove portion to combine a cocking part(111) with cocking. A welding unit(150) is formed on the surface, on which the upper case and the lower case contact, after the upper case and the lower case are combined to each other. |
