ELEMENT FOR PIEZOELECTRIC POWER GENERATION AND INDICATOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an element for piezoelectric power generation, which is improved in environmental resistance to such a degree that the element can be used for a long period even in a high-moisture environment, an exhaust gas environment, etc. SOLUTION: This element for piezoelectric power generation has a bimorph structure constituted by jointing a single rectangular plate-shaped piezoelectric element body having electrodes on both surfaces to an elastic plate. This element has a fixing section 4 at one end and a constant weight 6 composed of a magnetic material or permanent magnet at the other free end. A lead wire 7 is soldered to a spot of the element near the fixing section 4 and the whole body of the element is hermetically sealed in a nonmagnetic container by leaving a space in which a fixed deflection is allowed at the free end of the element in the container.