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Abstract

A piezoelectrically actuated driving and adjusting apparatus transmits both pure translation movements and rotation movements. The object of the present invention is to provide a piezoelectrically actuated driving and adjusting apparatus having a simple, compact and robust mechanical structure, capable of ensuring long adjustment paths and suitable for various adjustment and drive tasks using the same principle structure. Two parallel stacks of piezoelectric elements are arranged as close as possible to each other. The piezoelectric stacks are supported at first front surfaces on a crossbar by a tiltable coupling. Second front surfaces of the piezoelectric stacks, opposite to the first front surfaces, lie flat on a stiff common member that rigidly interconnects both the piezoelectric stacks. A biasing apparatus is provided to apply a symmetrical, predefinable force on the piezoelectric stacks by acting on the crossbar and the common member. Hinge devices allow opposite groups of components to be deflected, tilted and/or lifted in relation to each other when temporally offset and variable electric voltages are applied to the piezoelectric stacks.

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First Claim