Stellantrieb für eine Fahrzeugkupplung

摘要

A vehicle clutch control and setting mechanism has an axially guided output member (12) for releasing the vehicle clutch, a gearbox (13) for converting a rotary input motion into a translatory motion of the output member (12), and an energy accumulator (33) for generating an additional force on the output member (12) directed at releasing the clutch. In order to obtain a non-linear characteristic of the additional force over the path of displacement of the output member (12) and thus to compensate in an optimal manner the antagonistic force exerted by a clutch engaging spring on the output member (12), the energy accumulator (33) acts on a rotary compensating wheel (30), at a radial distance from its axis of rotation (32), the rotary motion of the compensating wheel being controlled by the translatory motion of the output member (12). This control is preferably achieved by means of spur-teeth on the compensating wheel (30) and by a gear rack (29) on the output member (12).