Patent ID: 7642696
Filing Date: 2010-01-05
Classification: H01L,H02N

Abstract:
1. A vibration actuator comprising: an actuator body having a piezoelectric element and an on-actuator body feeding electrode for applying a voltage to the piezoelectric element, the actuator body delivering a driving force by generating a plurality of vibrations in different directions; a base containing the actuator body and having an on-base feeding electrode for feeding the actuator body; and a pressurizing element made of conductive rubber including stacked insulators and conductors and arranged between the base and the actuator body such that the pressurizing element brings the on-actuator body feeding electrode and the on-base feeding electrode into conduction and applies in advance a compressive force in the direction of at least one of the vibrations to the actuator body at a non-node part of the at least one of the vibrations of the actuator body, wherein the pressurizing element is arranged such that the stacking direction of the conductive rubber intersects with a plane including the directions of the plurality of vibrations of the actuator body.