Mechanism for transmitting a rotary movement between a driving shaft and a driven shaft, in particular designed as a drive mechanism for slatted blinds

摘要

Mechanism for transmitting a rotary movement between a driving shaft (3) and a driven shaft, provided with a rattling slip coupling which is formed by a bush (8) with an internal cavity (13) with polygonal cross-section at the side of the one shaft and at the side of the other shaft a second bush (7,16) made of resilient material of corresponding polygonal external cross-sectional shape, which is provided with at least two incisions (17) parallel to the direction of the shaft. Preferably the polygonal shape is a hexagonal shape.