Abstract: The invention relates to a blind-manoeuvring device (40) consisting of a drum (42) for winding at least one cord (2, 5) which is connected to the blind and a support (41) for said drum (42). The aforementioned drum support comprises at least two parts (41a, 41b) which are assembled such as to form passage holes (48) in which the cords (2, 5) can slide. The invention is characterised in that each of the aforementioned parts (41a, 41b) supports the drum (42) directly or indirectly. During assembly, one such device facilitates the introduction of cords into the winding drum support and enables said task to be automated.

Abstract: Drive device for manually driving a blind, roller shutter or the like, comprising an epicyclic reduction gearbox consisting of the juxtaposition of two simple planetary gear trains of type I (A1, B1, a1,/A2, B2, a2), the sun wheels (A1, A2) of which are mechanically linked so as to be driven simultaneously at the same speed and the annulus gear (B1) of the first planetary gear train of which, on the input side of the reduction gearbox, is fixed and the other annulus gear (B2) of which can rotate. The reduction ratio is less than or equal to 3. This drive device makes it possible to obtain a low reduction ratio with a small diameter.

Abstract: Drive device for manually driving a blind, roller shutter or the like, comprising an epicyclic reduction gearbox consisting of the juxtaposition of two simple planetary gear trains of type I (A1, B1, a1,/A2, B2, a2), the sun wheels (A1, A2) of which are mechanically linked so as to be driven simultaneously at the same speed and the annulus gear (B1) of the first planetary gear train of which, on the input side of the reduction gearbox, is fixed and the other annulus gear (B2) of which can rotate. The reduction ratio is less than or equal to 3.