| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated type piezoelectric actuator and an injection device, capable of preventing a disconnection of an external electrode and preventing damage to a piezoelectric element. SOLUTION: The laminated type piezoelectric actuator comprises an actuator body 1 obtained by alternatively laminating a plurality of piezoelectric elements 2 and a plurality of internal electrodes 3, a pair of external electrodes 19a, 19b for respectively electrically connecting first internal electrodes 3a to each other and second internal electrodes 34b to each other, and a heat-shrinkable tube A covering the body and the electrodes 19a, 19b. In this case, the electrodes 19a, 19b include metal films 6a, 6b formed on the body 1, conductive elastic members 15a, 15b respectively abutted against the films 6a, 6b, and metal plates 17a, 17b respectively abutted against members 15a, 15b. The plates 17a, 17b are pressed and fixed o the metal films 6a, 6b of the body 1.
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