LAMINATED PIEZOELECTRIC ELEMENT, INJECTION APPARATUS PROVIDED WITH SAME, AND FUEL INJECTION SYSTEM PROVIDED WITH SAME

摘要

[Problem] To provide a laminated piezoelectric element capable of long-term, stable driving without developing cracks in the junction of the metalized layer and the lead member or in the laminated body, and an injection apparatus and fuel injection system provided with the same. [Solution] A laminated piezoelectric element (1) is characterized by the inclusion of the following: a laminated body (7) comprising piezoelectric layers (3) and internal electrodes (5) laminated together; metalized layers (8) provided on the lateral surfaces of the laminated body (7) and electrically connected to the internal electrodes (5); external electrode members (12) provided on the top of the metalized layers (8) via a conductive adhesive layer (10); and lead members (14) joined to the external electrode members (12).