Patent ID: 8754575

Claim:
A fitting structure fitting a piezoelectric element to an actuator base on which a wiring member is arranged to apply a voltage to the piezoelectric element, the piezoelectric element deforming according to the applied voltage and thereby displacing a supported object to the actuator base, the fitting structure comprising: an opening formed in the actuator base to accommodate the piezoelectric element; a receiver inwardly protruding from an inner circumferential edge of the opening to receive the piezoelectric element; a hole defined by an inner end of the receiver and communicating with the opening; a protrusion being a part of the wiring member and protruding from the inner end of the receiver onto the hole to face the piezoelectric element through the hole; an adhesive part formed of a liquid adhesive that is continuously filled in a space defined by the piezoelectric element, the inner circumferential edge of the opening, and the receiver and is solidified in the space to adhere the piezoelectric element to the inner circumferential edge of the opening and the receiver; and a stopper formed on one of the receiver and protrusion and stopping a capillary phenomenon of the liquid adhesive between the piezoelectric element and said one of the receiver and protrusion.