Construction system for ventilation device i.e. ventilation grille, has active element lying at inner wall of receiver by operation of counter-active element such that fins are mounted at frame element in stable position

摘要

The system has fins (6) with a rotary shaft and a free end, where the rotary shaft is formed as a receiver. The active element lies at an inner wall of the receiver by operation of a counter-active element such that the fins are mounted at a frame element (2) in a stable position. The active element is formed as a spreader element and an anchor. The counter-active element is formed as a screw with a threaded shaft portion and a head. The frame element includes an opening (14) on a longitudinal side (3) to accomplish the counter-active element.