| 摘要 |
An operation group for curtains with winding roll, including a mechanism ( 1 ), a stop device ( 90 ) and a hub ( 9 ), with the mechanism ( 1 ) aimed at imposing and stabilizing a pre-established pre-loading value for first elastic means ( 2 ), present in the winding roll ( 3 ), with the stop device ( 90 ) being aimed at locking the winding roll ( 3 ) to stabilize the curtain in any unwound position and with the hub ( 9 ) aimed at supporting the roll ( 3 ) at one of its ends. The above operation group (G) includes the mechanism ( 1 ) connected to one end ( 3 a) of the roll ( 3 ) and the stop device ( 90 ), which is connected to the other end of the roll ( 3 ), so as to define the hub ( 9 ).
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