Roller blind arrangement for window opening in wall, has roller blind including flange that is partially positioned above and vertical to upper edge of panel at exception of valve positioned vertical to opening of trap door of caisson

摘要

The arrangement (1) has a roller blind including flanges (9) that are internal to a tunnel caisson (3), and including a rolling axle (4) provided between the flanges, where the caisson defines a housing for a roller blind mechanism. The flanges have fixation units (10) for fixing the axle. Each unit has a vertically actuating slide valve (11) that permits locking/unlocking of the axle. Each flange is partially positioned above and is positioned vertical to an upper edge of one of wall panels (7) at the exception of the valve positioned vertical to an opening of a trap door (8) of the caisson.