Device for rotating a winding shaft of a belt of a roller blind, and roller blind comprising the device.

摘要

Device for drawing (5) rotating a shaft (3) winding and developed element (4) of roller shutter (1), this device comprising: - a pulley (14) comprising a rim (17) and two discs (15, 16) framing said rim (17), the pulley (14) intended to drag the pin (3) of the roller shutter, and - being one actuating element (18) flexibly wound around the rim ( 17) of the pulley (14) secured to said pulley (14) by a coupling device (19), further comprising a fixing member (21) which is integral with the pulley (14), delimiting said body fixing (21) a passage (22) in which passes the actuating element (18) retaining said control member in proximity to the rim (17), the actuating element (18) permanently coiled around the rim being (17 ) between the coupling device (29) and the fixing member (21) over at least an arc of non-zero length.