Drive means for at least one vehicle element, in particular for a motor vehicle safety seat system, and vehicle safety seat system with such driving means

The invention relates to a drive means (14) for at least one vehicle element, in particular for a motor vehicle safety seat system (10), the result of a detected or as forthcoming detected crash event a displacement of the at least one vehicle element (6) causes said drive means (14 ) comprises a first drive member (15) and a thereto displaceable run second drive member (16) and a releasable expandable driving means (25), (with which drive means 25) the first drive element (15) and the second drive element (16) first from a , a resting state representing the position (S1) are in a second, an active state representative position (S2) abruptly movable relative to each, wherein one of the drive elements (15, 16) with the motor vehicle (1) and the other of the drive elements (16, 15) is connectable to the vehicle element. An optimized driving means (14) is characterized by a reverse motion locking means (31), a relative return movement of the first and second drive member (15, 16) from the second to the first position (S2, S1), at least limited.