| 摘要 |
An operation group for curtains with winding roll can be obtained according to a first and second embodiments (G1, G2), for automatically and manually winding up curtains, respectively. According to the first embodiment (G1), t he group includes a mechanism (1), connected to a head (3a) of the curtain winding roll (3), and a stop device (90) defining a hub (9) connected to the remaining head. According to the second embodiment (G2), the group includes the same mechanism (1), also connected to a head (3a) of the curtain winding roll (3), and, at the remaining end of the roll, a pulley (95) defining the hub (9). The mechanism (1) is operated by moving first the barrel (5), connected to first elastic means (2) situated inside the roll (3), to slide axially to disengage clutch means (7) and then by rotating the barrel either in one or another direction. When the mechanism is released, the second elastic means (6) move the barrel (5) back, thus engaging again the clutch means (7). Adapter ringe (30,300) allow to use the operation with rolls (3) of larger diameter.
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