The invention proposes a drive device (10) for driving a windscreen wiper, which comprises a bearing body (12), a drive shaft (20) which is mounted to rotate with respect to the bearing body (12), a guide housing (19) for guiding the drive shaft (20) in rotation about its axis (A1) which is pivot-mounted with respect to the bearing body (12) about an axis (A2) which is orthogonal to the axis (A1) of the drive shaft (20), a drive motor (16) for driving the shaft (20), a rack (30) and pinion (28) mechanism which causes the shaft (20) to pivot in order to vary the inclination of the axis (A1) of the shaft (20) with respect to the bearing body (12) according to the angular position of the drive shaft (20), characterized in that the drive motor (16) is supported by the guide housing (19).
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