Abstract: An actuating mechanism for unlocking the safety-catch of a foldable back, equipped with angle adjusting mechanism, of a car-seat has a control cable attached to the upper actuating lever and reversed forward via a lower reversing position and acting on the safety-catch which acts with a locking pin. Provided between the lower reversing position and the safety-catch, below the control cable, is an additional reversing mechanism which moves the lower control cable area upward in relation to its stretched state and, in the state of utilization of the seat-back, always maintains equal the angle of wrap of the typically provided lower reversing position in all leaning positions. This results in a considerable gain in adjusting path for the actuating lever.