(EN) In a vibration unit 10, a piezoelectric element 32 is disposed within the inner space S of a through-hole 42 to enable a second case member 42 to be disposed close to a first case member 20. As a result, the vibration unit 10 is thinned, i.e. the height H of the vibration unit 10 is reduced. Thus, the vibration unit 10 is thinned to make the vibration unit 10 compact.
(ZH) 振动组件(10)中，压电元件(32)进入贯通孔(42)的内部空间(S)，因此，能够将第二壳体部件(40)相对于第一壳体部件(20)接近地配置。由此，实现振动组件(10)的薄化，即振动组件(10)的高度H的降低。通过这样进行振动组件(10)的薄化，实现振动组件(10)的小型化。
