| 摘要 |
A wiring connecting structure for a piezoelectric actuator includes a terminal 57-1, a through hole 67 formed through the terminal 57-1, a first liquid stopper 69-1 arranged around the through hole 67 in a gap between the terminal 57-1 and a common electrode 19 of a piezoelectric element 13 of the piezoelectric actuator, and a liquid trap 73 arranged adjacent to the first liquid stopper 69-1. The terminal 57-1 faces the common electrode 19 with an electric insulating layer 61 being on the piezoelectric element 13 side and the first liquid stopper 69-1 being in the gap between the common electrode 19 and the terminal 57-1. A liquid conductive adhesive 79 is filled in the through hole 67. If there is an excess of the liquid adhesive 79, the excess is guided into a trapping space 77 of the liquid trap 73, to prevent the excess from oozing out.
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