Patent ID: 7726379

Claim:
A device for driving a screen between open and closed positions relative to an opening, comprising a gear motor unit, a winding tube for displacing the screen and defining an inner chamber in which the gear motor is mounted, the winding tube being controlled in rotation about an axis by the gear motor unit, a head fixedly mounted on a support structure adjacent the opening and supporting the winding tube, a rotational part within the winding tube, drive means for rotating the rotational part in response to rotation of the winding tube, the rotational part including an element representative of a position and/or a displacement of the winding tube, sensor means for detecting the position and/or the displacement of the element, the sensor means being connected to an electronic processing unit adapted to determine the position and/or the displacement of the winding tube, a partition secured to the head and extending therefrom into one end of the winding tube, the partition defining, on one side toward the head, a first compartment in which the rotational part is mounted and, on another side, a second compartment in which at least the electronic processing unit is mounted, the partition sealing the second compartment so that the electronic processing unit is sealed relative to the first compartment and the rotational part, the partition including a first axial wall extending from the head inwardly within the one end of the winding tube toward the motor and a radial wall closing the first axial wall within the winding tube, and the first axial wall including at least one wall segment in which the rotational part is positioned.