| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated piezoelectric actuator that is capable of preventing discharge at high humidity or high applied voltage. SOLUTION: This laminated piezoelectric actuator consists of a plurality of laminated piezoelectric plates 11; and sheet metals 15 placed between the piezoelectric plates 11, having projections 16 for connection joined to the piezoelectric plates 11 using conductive adhesive. The projections 16 for connection are alternately positioned in two directions. A plurality of the projections 16 for connection positioned on one side and a plurality of the projections 16 for connection positioned on the other side are electrically connected with each other using connecting members 17 in positions away from the circumference of the laminated piezoelectric plates 11. Insulating ceramics 32 are placed in the gaps 31 between the connecting members 17 and the piezoelectric plates 11, and the gaps between the insulating ceramics 32 and the surroundings are filled with water-proof resin 33. |
