IMPROVED SHUTTER LAMELLA AND COMPACT SHUTTER UNIT Russian patent published in 2017 - IPC E06B9/15 

FIELD: construction.

SUBSTANCE: lamella for use in roller shutter comprises a body having a first edge, a second edge, an outwardly facing side extending along a convex bend between the first edge and the second edge, and an inwardly facing side extending along a concave bend between the first edge and the second edge. The lamella comprises an engaging profile attached to the body at the first edge. The engaging profile comprises an end element. The end element has an outer surface adjacent to the outwardly facing body side and an inner surface adjacent to the inwardly facing body side. Wherein the end element is arranged at an acute angle to the inwardly facing body side. The lamella comprises a receiving profile attached to the body at the second edge. The receiving profile comprises an edge element having an outer surface of the edge and a surface of the articulation edge. The outer surface of the edge is adjacent to the inwardly facing body side, the limiting element spaced from the edge element, the limiting element having an outer limiting surface and a limiting articulation surface, an articulation space in which the second engaging profile of the second lamella can engage the edge element through an opening between the edge member and the limiting member, thereby forming a hinge, and a receiving socket located between the edge element and the limiting element, which is separated from the articulation space by a first projection on the surface of the articulation edge and a second projection on the limiting articulation surface. Wherein the outer surface of the edge comprises a first edge surface, a first curved edge wall, a second curved edge wall and a second edge surface, and the outer limiting surface comprises an inclined limiting wall and an outer limiting wall. The first curved edge wall and the inclined bounding wall have substantially similar bends, so that the first curved edge wall of the first identical lamella can be aligned substantially flush with the inclined limiting wall of the second lamella. Also, a retractable roller shutter unit containing a plurality of engaged lamellae described above is also proposed.

EFFECT: improvement of lamella.

11 cl, 11 dwg