antriebsvorrichtung to turn the role of a rolladens, rollstores or the like.

摘要

1. Drive device for rotating the winding tube (1) of a roller-blind or roller-shutter, having a fixed casing (3), outside the winding tube, an electric motor (8) with a tubular casing (7) housed in the winding tube, the shaft (11) of the motor being connected kinematically in rotation with the winding tube, a first means for immobilizing the tubular casing (7) in rotation during the functioning of the motor, a second means (10) for immobilizing the winding tube (1) in rotation relative to the tubular casing (7) when the motor is not functioning, an automatic stop device (26), housed in the fixed casing, for cutting off the power supply to the motor after a certain number of rotations of the shaft of the motor, a manually actuable mechanism capable of driving the tubular casing of the motor and consequently the winding tube, in rotation, and one part (37, 39) of which is situated in the fixed casing, a rotating connector (9) for supplying power to the motor, independent of the angular position of the casing of the latter, kinematic link which is permanent being ensured in rotation between a rotating ring (14) integral with the winding tube and the automatic stop device (26) without passing through the shaft of the motor, characterized in that the said first means for immobilizing the tubular casing (7) in rotation comprises a planetary reducing gear of the irreversible WOLFROM type arranged inside the tubular casing (7) and the driven ring gear (32) of which is integral with the tubular casing (7), the fixed ring gear (31) of which is integral with the fixed casing (3) and the planetary gear (29) of which has an axial extension running inside the fixed casing (3) and outside the tubular casing (7) and having means (39; 40) for coupling to an operating means (37; 59).