Laminated piezoelectric element for piezoelectric actuator of common rail fuel injection system, has conductive adhesive for joining mesh shaped electrodes, whose thickness at specific area is smaller than electrode thickness

摘要

The laminated piezoelectric element (1) has a pair of mesh shaped electrodes (34) joined at the sides (101,102) of a ceramic laminate (10) through a conductive adhesive (33). The thickness of conductive adhesive which enters into through-hole in 50% area of joint surface of electrode and conductive adhesive, is smaller than the thickness of electrode. An independent claim is also included for laminated piezoelectric element manufacturing method.