| 摘要 |
A window roller blind (5) or a partition net is extended with the aid of actuating elements (14, 15), which actuating elements (14, 15) swing about an axis that extends at a right angle to the winding shaft (18) on which the respective strips of material (8) are wound up. The actuating elements (14, 15) are flexurally stiff relative to a bending plane that extends at a right angle to the planes defined by the spread-out roller blind strip (8) or the partition net. There is provided for each of the actuating elements (14, 15) a angular gear (22, 23) whose output shaft carries, and rotates with, the respective actuating element (14, 15). The output shaft (32, 34) of the respective angular gear (22, 23) forms at the same time the bearing axis of the actuating element (14, 15). The two angular gears (22, 23) are either driven by separate motors (29, 33), or their input shafts are mechanically coupled one with the other and are jointly driven by an electric motor (29).
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