Somfy

Marc J Quezel

Jean-Michel Perache

Jean De Chevron Villette

The device includes a winding drum (1) on which there is fixed one end of the cord to be wound. This drum includes a smooth portion (8) having a diameter which is greater than the initial diameter of the drum (1), is located at a distance from the cord fixing point (12) and is limited by a shoulder (9). The cord (11) to be wound is guided approximately tangentially to this shoulder so that the turns (11a) formed on the portion of greater diameter are pushed back by the shoulder (9) under the effect of the load, the length of the portion of greater diameter (8) being such that the tension on the cord is zero in the turns (11b) leaving this portion of greater diameter. These loose turns are positioned beside each other on the portion (1) of the drum ensuring an even winding without overlapping of the cord.

Device for winding the suspension cord of a blind

A venetian blind includes a winding drum (5), on which is wound a cord (8) fastened to the lowermost slat (10) of the blind, and a mechanism for orienting the slats of the blind, including a flexible ladder which is driven frictionally and the bands (15, 16) of which are fastened to the slats of the blind for their orientation. The orientation device includes a slide (17) mounted elastically and displaced transversely by the cord (8) when a pulling force is exerted on the cord. The slide controls the passage of stop pieces (27, 28) fixed to the ladders and consequently the orientation of the slats of the blind.

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Passy, France

Marc J Quezel