Seatbelt-retracting device

A device for retracting a seatbelt, comprising:

• a shaft and having a main drive spring which prestresses the shaft in a retracting direction of the seatbelt, and having a locking wheel which is rotatably arranged relative to the shaft, and having a blocking device with a locking lever for blocking a rotational movement of the locking wheel in the retracting direction, and having a compensating spring which is arranged in such a way that when the locking wheel is blocked, said compensating spring can transmit to the shaft a prestressing force which counteracts the prestressing force of the main drive spring,
• wherein the blocking device has a switching lever for activating the locking lever, wherein the switching lever is arranged pivotably about an axis which is arranged parallel to the axis of the shaft, and has precisely one engagement element which can be guided on a positive cam of a control disk which is connected in a rotationally fixed fashion to the shaft , wherein the positive cam is embodied with at least one turn spiraling towards a center of the cam, wherein an outermost gap formed from an outermost turn leads to a gap formed from an outer adjacent turn and an innermost gap formed from an innermost turn leads to a gap formed from an inner adjacent turn.