Patent ID: 7078850

Claim:
A piezoelectric power generation device for generating power by applying distortion deformation to piezoelectric ceramics members formed in plate shapes, said piezoelectric power generation device comprising: two plate shaped piezoelectric ceramics elements included in each of the piezoelectric ceramics members whose polarization is set to the same direction and an extremely thin metallic electrode interposed between the piezoelectric ceramics elements, the piezoelectric ceramics member being formed in a laminar shape by uniting the piezoelectric ceramics elements to the metallic electrode; and cushion materials for supporting central parts or both end parts of one surfaces of the piezoelectric ceramics members, wherein the piezoelectric power generation device has a soft support structure in which the natural oscillation of the piezoelectric ceramics members is hardly transmitted to other structural members, wherein the piezoelectric ceramics member is formed by forming the two piezoelectric ceramics elements in the same configuration, and wherein both the end parts of the two piezoelectric ceramics elements are arranged uniformly, the metallic electrode protrudes from one end part of both the piezoelectric ceramics elements, the lead wire is connected to the protruding part, and then, the protruding part is embedded in an adhesive to be formed integrally with the piezoelectric ceramics elements.