A roller shade clutch with internal gearing

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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Details

F16H 35/02 (2006.01) E06B 9/26 (2006.01) E06B 9/44 (2006.01) F16D 11/06 (2006.01) F16D 13/04 (2006.01) F16D 23/00 (2006.01) F16D 41/00 (2006.01) F16D 41/10 (2006.01) F16D 41/20 (2006.01) F16D 43/00 (2006.01) F16H 37/12 (2006.01)

Patent

CA 2452908

A bi-directional clutch (10) for operating a window dressing such as a roller shade includes a protective guard (12) for securing the window dressing to a stationary structure, a gear box for transmitting rotation to an output member in response to the operation of an elongated operating member such as a cord (90), and an antirotational member that prevents the undesirable operation of the output member. The output member is coupled to the window dressing. The gear box includes a gear pulley (30) coupled to the elongated operating member, a planetary gear (48) and a stationary gear (36). The gear box is arranged and constructed to transmit motion to the output member in response to the activation of the elongated operating member, at a predetermined mechanical advantage.

Un embrayage bidirectionnel destiné à commander un habillage de fenêtre, tel qu'un store à enroulement automatique, comprend un dispositif protecteur conçu pour fixer l'habillage de fenêtre fixe, une boîte d'engrenage conçue pour transmettre la rotation à un élément de sortie en réponse à l'actionnement d'un élément d'actionnement allongé tel qu'un cordon, et un élément anti-rotation empêchant l'actionnement indésirable de l'élément de sortie. L'élément de sortie est accouplé à l'habillage de fenêtre. La boîte d'engrenage comprend une poulie accouplée à l'élément d'actionnement allongé, une roue planétaire et un pignon stationnaire. La boîte d'engrenage est conçue et construite pour transmettre le mouvement à l'élément de sortie en réponse à l'activation de l'élément d'actionnement allongé, selon une caractéristique mécanique avantageuse prédéterminée.

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