Control device, in particular for a motor-vehicle friction clutch

A control device, in particular for a motor-vehicle, comprising:

• an electric motor having a drive shaft,
• a substantially translationally movable output member, a crank gear unit converting the rotational motion of the drive shaft into the substantially translational motion of the output member,
• wherein the crank gear unit comprises a gear case forming a combined mechanism with the electric motor, a worm gearwheel pivoted in the gear case, and a worm sitting on the drive shaft of the electric motor and meshing with the worm gearwheel,
• wherein the output member is mounted eccentrically to the axis of rotation of the worm gearwheel swivellably on the latter,
• and wherein the axis of rotation of the worm and the resultant force exerted by the worm gearwheel on the output member lie substantially in a common plane normal to the axis of rotation of the worm gearwheel.