Electric universal drive

An electric universal drive comprising:

• A revolving or linearly movable drive member (1) having at least two sets of actuators each arranged in its own carrier (3) in particular piezo actuators (4, 5, 6) each acting on a leg (7) supported on the drive member (1), the at least two sets of actuators alternately pressing the respective associated leg (7) onto the drive member (1) for engagement therewith and displacing it in a direction of the desired movement of the drive member in a high-frequency stepping sequence,
• the carrier (3) of the actuator sets being connected in a semi-rigid manner with respect to the leg (7) parallel to the movement direction of the drive member at a location which is displaced to one side and the carrier (3) being supported on a stator and pre-tensioned elastically by a pretension member (9) and an elbow lever mechanism (10) arranged between the pretension member (9) and the respective carrier (3) for transferring the pretension force, the elbow lever mechanism (10) including a first elbow lever (24) which engages the carrier (3) at a point which is displaced with respect to the leg (7) parallel to the direction of movement of the drive member (1) toward the, with respect to the carrier connection point, other side,
• the elbow lever mechanism having a second elbow lever which is arranged between the pre-tensioning member (9) and a stator-based support (27), and an operating actuator (28) which is associated with the elbow operating mechanism (10) and which is connected to the elbow joints of two of the elbow levers (24, 25), and
• the arrangement of the elbow lever (24) mechanisms (10) being so selected that, when the first elbow lever is stretched, the second elbow lever (25) is kinked and vice versa, and the actuator (28) for the common switching of the two elbow levers (24, 25) being provided for the switching of the elbow lever (24, 25) between the stretched position and the kinked position.