Patent ID: 10177686

Abstract:
A piezoelectric motor includes at least two piezoelectric actuators. Each actuator includes two piezoelectric elements on opposite sides of a coupling element, the sides being main sides of the piezoelectric actuators and having a larger area than other surfaces or sides of the piezoelectric actuators. The main surfaces of each of the piezoelectric actuators connect with at least four side surfaces of the piezoelectric actuator. The motor includes an elastic element coupled to and spacing the first and second piezoelectric actuators from each other and there is also a frictional element that couples the first and second piezoelectric actuators for frictional contact for driving an object. The first and the second piezoelectric actuators are adapted to deform in a direction that is substantially perpendicular to a plane defined by the side surface to which the elastic element is attached using a longitudinal piezoelectric effect of the piezoelectric elements.