| 摘要 |
PURPOSE:To obtain a bimorph type piezo-electric actuator with cantilever structure having large deformation and high resonance frequency and a head actuator by solving mutually contradictory relation for improving both of deformation and resonance frequency. CONSTITUTION:In a bimorph element (piezo-electric actuator) 104 obtained by mutually sticking the 1st and 2nd piezo-electric substances 101, 102 through an elastic shim material 103, the 1st and 2nd substances 101, 102 are stuck to the material 103 longer than the length of the substances 101, 102 at least on the fixed end side of the element 104. The fixing part 103a of the material 103 which is a longer part than the length of the substances 101, 102 is completely fixed by a fixing board 105 and a part of the substances 101, 102 is supported and fixed by an elastic member 108. |
