Roller shutters for non rectangular openings in buildings, has slats guided between rails and winding shaft by curve with length defined by slanting angles of shaft bearing plates

摘要

The curve (46) in the slat support device between the winding shaft (6) and top end of the slat guide rail (2, 4) transfers the slats (22) directly from the rail to the shaft without any additional support being provided for them. The curve length is defined by the maximum slanting angle for the bearing plate (8, 10) and the path of the slats along this curve is dependent upon the slanting angle set for each individual bearing plate. The winding shaft extends parallel to a sloping top side of the building opening and can wind up the slanting shutter slats (14). The winding shaft is rotatably mounted on at least one bearing plate connected to the top end of a slat guide rail via an articulated joint, so that the plate can be tilted about an essentially horizontal pivot axis extending perpendicular to the shaft. A support device at the top end of the guide rail is used to support at least some of the slats as they move from the end of the guide rail to the winding shaft. The support device includes a curve located in a plane extending at right angles to the pivot axis.