| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric element unit capable of improving mechanical strength in a simple structure, and a drive device including the piezoelectric element unit.SOLUTION: A first resin part 52a covers from a mounting surface 42a to an outer side face of an element body 20 corresponding to an interface between an active part 26a and an inactive part 26b1. At a position corresponding to an interface 26c1 between the active part 26a and the inactive part 26b1, an outer surface of the first resin part 52a covering the outer side face of the element body 20 is covered by a second resin part 53, and the second resin part 53 also integrally covers the outer side face of the element body 20 corresponding to the active part 26a. |
