Patent ID: 9225266
Filing Date: 2015-12-29
Classification: H02N

Abstract:
1. A piezoelectric linear actuator comprising: a slider having a first surface and a second surface opposite the first surface; a first plate spaced by a first predetermined distance from the first surface of the slider and a second plate spaced a second predetermined distance from the second surface of the slider; a plurality of shear piezo stacks, each having a first end fixed to one of the first plate and the second plate, and a second end which faces the slider; wherein the slider comprises a piezo plate which expands or contracts according to an applied voltage thereto, a first sliding member disposed on a first surface of the piezo plate and a second sliding member disposed on a second surface of the piezo plate; and wherein the piezoelectric linear actuator further comprises a friction member disposed on the second end of each of the plurality of shear piezo stacks, such that the slider is supported by the friction members by a friction force between the friction members and one of the first sliding member and the second sliding member.