公开(公告)号：US11618058B2

公开(公告)日：2023-04-04

申请号：US16213289

申请日：2018-12-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kang-Ho Park ,  Hye Jin Kim ,  Seongwoo Cho

IPC: B06B1/06 ,  A61H23/02 ,  G06F3/01

Abstract: Disclosed is a vibration actuator device. The vibration actuator device includes a substrate, lower supports disposed on the substrate and spaced apart from each other in a first direction, an actuator disposed on the lower supports to generate a vibration having a first resonant frequency by an external power, a vibration plate disposed on the actuator to vibrate in accordance with the actuator, and a mass portion disposed on the vibration plate to vibrate in accordance with the actuator and the vibration plate. Here, each of the vibration plate and the mass portion has a second resonant frequency that is less than the first resonant frequency.