PIEZOELECTRIC ROTARY DRIVE HAVING A LOADING MEANS DESIGNED AS A LEAF SPRING

摘要

The invention relates to a piezoelectric rotary drive (1) for a shaft (2), comprising a piezoelectric actuator (3), a deformable frame (4), which can be frictionally coupled to the shaft by means of a coupling segment (5) in order to achieve a stick-slip drive, and a loading means (6) in order to apply a preloading force to the coupling segment and/or the actuator and/or the shaft. In order to simplify production and assembly, the loading means is designed as a leaf spring, which extends substantially in a plane, preferably along a straight line, in the relaxed state.