| 摘要 |
A stacked piezoelectric ceramics displacement magnifying device comprising a base member; a stacked piezoelectric ceramics fixed at its one end to the base member, the stacked piezoelectric ceramics being expandable upon application of an electric field thereto; a lever member having an inner end portion for receiving an expansion force from the stacked piezoelectric ceramics, at least two outer end portions adapted to be outwardly displaced when the inner end portion receives the expansion force from the stacked piezoelectric ceramics, and a fulcrum portion connected through a hinge to the base member, the hinge being formed of a thin plate unexpandable in its longitudinal direction; a connection member for connecting the other end of the stacked piezoelectric ceramics to the inner end portion of the lever member; and a flexing member formed of an elongated elastic material and connected at its both ends to the outer end portions of the lever member under the condition where a central portion thereof is flexed. The hinge is arranged in parallel to a direction of a resultant of forces acting to the inner end portion and the outer end portion of the lever member.
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