| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric vibration module capable of protecting a piezoelectric element of a vibration plate from external impact, in particular, lateral impact.SOLUTION: A piezoelectric vibration module 100 includes: a piezoelectric element 123 for generating vibration force by repeating expansion and contraction deformation by application of external power; an upper case 110 having a lower part opened, forming an internal space so that the piezoelectric element 123 linearly vibrates, and including dampers 111 projected toward the center from inner side surfaces; a lower case 140 connected to a lower surface of the upper case 110 for masking the internal space of the upper case 110; and a vibration plate 120 having a flat lower plate 121 arranged with the piezoelectric element 123, arranged in the upper case 110 and the lower case 140, and driven in the vertical direction. |
