Patent ID: 7237592

Claim:
A mechanism for maneuvering a closing or sun-protection installation comprising: an element for driving in rotation a winding shaft for the closing or sun-protection installation, the element for driving comprising a motor; and at least one spring for compensating for a weight of the screen, said spring is mounted around said element for driving, said spring including a first end and a second end, wherein said spring and said element for driving belong to a sub-unit adapted to be at least partially introduced in a unitary manner inside the winding shaft, and wherein said first end of said spring is kinematically linked to said element for driving so that said first end is immobilized in rotation about an axis of rotation (X-X′) of the winding shaft, while said second end is kinematically linked to the winding shaft when said sub-unit is in place in the winding shaft so that said second end rotates about the axis of rotation (X-X′).