| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a laminated piezoelectric actuator, which is easily restrained from increasing in temperature due to self-heat release, even when it is operate on an high applied voltage and high in reliability, stable in characteristics, and small in size. SOLUTION: A laminated piezoelectric actuator has a structure, in which piezoelectric plates 3 and electrodes are alternately laminated into a laminate 1, and ceramic inactive bodies 8 are each bonded to the upper and lower edge face of the laminate 1, the electrodes are alternately defined as a first or a second electrode from below, and the first electrodes are electrically connected together, and second electrodes are also electrically connected together. In this case, the inactive body 8 is 20 W/mK or above in thermal conductivity. The inactive body 8 is consists of a connecting part 11 as wide as the laminate 1 and bonded to the laminate 1 and a wide part 12 which is wider than the connecting part 11.</p> |
