Actuating drive for an air deflector device

The invention relates to an actuating drive for an air deflector device (1), which can be adjusted from a non-use position to different use positions, on a vehicle, comprising a controllable electric motor (9), a gear reducer (S1; S2), and means for mechanically transmitting the actuating force to the air deflector device (1). The gear reducer (S1; S2) has a first worm drive (S1) which is coupled to the output shaft (4) of the electric motor (9) via the worm (5) of the worm drive and the worm gear (6) of which can interact with a worm (7) of a second worm drive (S2), the worm gear (8) of said second worm drive driving the adjusting shaft (3) for the air deflector device (1). 本发明涉及种用于车辆上的空气导流装置(1)的致动驱动器，该空气导流装置可以从非使用位置调整成不同的使用位置，该致动驱动器包括可控电动机(9)、齿轮减速器(S1；S2)、以及用于将致动力机械地传递给该空气导流装置(1)的器件。该齿轮减速器(S1；S2)具有第蜗杆传动(S1)，该第蜗杆传动经由该蜗杆传动的蜗杆(5)联接至该电动机(9)的输出轴(4)，并且该第蜗杆传动的蜗轮(6)可以与第二蜗杆传动(S2)的蜗杆(7)相互作用，所述第二蜗杆传动的蜗轮(8)驱动用于该空气导流装置(1)的调整轴(3)。