Patent ID: 9484521
Filing Date: 2016-11-01
CPC Classification: B06B,H01L,H02N

Claim Text:
1. A vibration generating apparatus comprising: a bracket having a circular plate shape; a vibration member having a lower edge portion of a central portion fixed to the bracket and having a closed curved line shape; a piezoelectric element fixed to a lower surface of the vibration member among inner surfaces of the vibration member and deformed when power is applied thereto; and a mass body fixed to the inner surfaces of the vibration member and disposed to face the piezoelectric element, wherein the vibration member includes: a first fixed portion fixed to an upper surface of the bracket; first and second piezoelectric element installation portions extended from the first fixed portion in an outer diameter direction; first and second displacement direction changing portions extended upwardly from the first and second piezoelectric element installation portions, respectively; first and second deformation amplifying portions extended from the first and second displacement direction changing portions in an inner diameter direction, respectively; and a second fixed portion connected to the first and second deformation amplifying portions and having the mass body mounted thereon.