Patent ID: 6629462
Filing Date: 2003-10-07
Classification: G01P

Abstract:
An acceleration sensor comprising:first piezoelectric element having first electrodes for outputting a charge produced by strain deformation, said first piezoelectric element including at least one first piezoelectric body and a first support block supporting said first piezoelectric body, said first electrodes being provided on opposite surfaces of said first piezoelectric element; and second piezoelectric element having second electrodes for outputting a charge produced by strain deformation, said second piezoelectric element including at least one second piezoelectric body and a second support block supporting said second piezoelectric body, said second electrodes being provided on opposite surfaces of said second piezoelectric element, wherein one surface of said first piezoelectric element and one surface of said second piezoelectric element are substantially parallel to each other, wherein said first support block is firmly held to provide a first cantilevered piezoelectric body, wherein said second support block is firmly held to provide a second cantilevered piezoelectric body, wherein the longitudinal axis of said first piezoelectric element is aligned with the longitudinal axis of said second piezoelectric element, and a free end portion of said first cantilevered piezoelectric body and a free portion of said second cantilevered piezoelectric body are pointing to each other.