VALVE ACTUATOR

摘要

Actuating devices for converting a rotational movement into a substantially translatory movement, having a drive unit (4) which generates a torque, having a drive shaft (10) on which an eccentric (12) is arranged in a rotationally conjoint manner and which can be set in rotation by the drive unit (4), having an eccentric output pin (14) which is arranged at an end region of the eccentric (12) situated opposite the drive shaft (10) and which is movable in a slotted guide (22) of a coupling element (24), and having an adjusting element (42) which can be moved by means of the coupling element (24), are known in principle. The slotted guide (22) is usually rigidly connected to an adjusting element (42). This often results in high transverse and frictional forces during the adjustment, which forces cannot be used for the adjustment. It is therefore proposed according to the invention that the coupling element (24) with the slotted guide (22) be mounted so as to be rotatable in its plane of extent.