A method of selectively TILT FOR BLINDS - DOUBLE IN STEP WITH winding varying radius

摘要

FIELD: construction.;SUBSTANCE: louvers for selective closing of an architectural opening, comprising: a head cornice; large quantity of plates suspended from the head cornice, including large number of pairs from upper and lower adjacent plates; the first and the second belt stairs, stretching downwards from the head cornice. At the same time each of the first and second belt stairs comprises a front cord of inclination, a rear cord of inclination and large number of transverse cords, stretching between appropriate front and rear cords of inclination, besides, transverse cords of the first belt stairs retain the upper plates of each pair from upper and lower adjacent plates, and transverse cords of the second belt stairs retain the lower plates of each pair of upper and lower adjacent plates, at the same time each of cords of inclination has the first end; a shaft of inclination; the first and second cams installed on the shaft of inclination and fixed relative to it for rotation with the shaft of inclination. At the same time the first and second cams are in engagement with the first ends of the front and rear cords of inclination of the first and second belt stairs providing for motion. Besides, rotation of the shaft of inclination provides for lifting and lowering of the front and rear cords of inclination of the first and second belt stairs for displacement of the plates from the first position, in which the upper and the lower adjacent plates of each pair are arranged above each other in the open position with double pitch, into the second position, in which pairs of the upper and lower plates are in closed position when inclined.;EFFECT: possibility to open or close plates of louvers when inclined with production of a row of different configurations, including a configuration with double pitch, depending on tracing of cords of inclination and driving cords.;16 cl, 81 dwg