Maneuvering mechanism and closing installation or sun protection installation incorporating one such device

摘要

The mechanism ( 1 ) comprises an element ( 4 ) for rotationally driving a winding shaft ( 2 ) for the closing screen of an opening (O) and at least one compensating spring ( 5 ) for the weight of the screen. The spring ( 5 ) is mounted around the driving element ( 4 ) and is jointly associated with a sub-unit ( 10 ) which can be at least partially introduced (F 1 ) in a unitary manner inside the shaft ( 2 ), a first end ( 51 ) of the spring ( 5 ) being cinematically linked to said element ( 4 ) and a second end ( 52 ) thereof being able to be cinematically linked to the shaft ( 2 ) when the sub-unit ( 10 ) is placed inside the shaft ( 2 ).