Patent ID: 8749117
Filing Date: 2014-06-10
Classification: H02N

Abstract:
1. A vibrating body for a vibratory drive unit, comprising: a first piezoelectric element including a first piezoelectric layer and a first electrode layer; a second piezoelectric element including a second piezoelectric layer and a second electrode layer; a third piezoelectric element including a third electrode layer; and an elastic member bonded to the first piezoelectric element and the second piezoelectric element, wherein the vibrating body drives a body to be driven by a vibration generated in the elastic member through an application of a drive voltage to the first piezoelectric element and the second piezoelectric element, wherein the elastic member has a front surface and a back surface, wherein the first piezoelectric element is provided on the front surface and the second piezoelectric element is provided on the back surface of the elastic member, wherein the first electrode layer and the second electrode layer are brought into conduction, wherein the third electrode layer and the second electrode layer are brought into conduction, wherein the third piezoelectric element is provided in parallel to the first piezoelectric element, which is provided on the front surface of the elastic member, and wherein the vibration includes at least two different vibration modes.