Linear thumb-piece actuation latch mechanism

Details Linear thumb-piece actuation latch mechanism Linear thumb-piece actuation latch mechanism

E - Fixed Constructions

05

C

E05C 1/16 (2006.01)

Patent

CA 2615585

This invention provides a thumb-piece door latch mechanism which has ergonomic features, is modular and can be used with any escutcheon, can be used with all type locks, and which in the locked door mode provides greater resistance to abusive attack of the door latch mechanism and makes the thumb-piece and latch mechanism more durable and less susceptible to vandalism. The thumb- piece moves linearly up and down and is connected to a thumb-piece guide plate which likewise moves up and down when the thumb-piece is moved. A permissive spring having one end connected to a spindle turn plate and the other end connected to the guide plate moves a rotatably mounted spindle, which in turn rotates a spindle tail and a latch connected to the spindle tail. The permissive spring provides greater resistance to abusive attacks of the door lock and mechanism.

Cette invention concerne un mécanisme de serrure à poussoir doté de caractéristiques ergonomiques, qui est modulaire et peut être utilisé avec n'importe quelle plaque de poignée de porte et tous les types de verrou et qui, en mode porte fermée, offre une plus grande résistance aux tentatives d'effraction et rend la serrure plus durable et moins vulnérable au vandalisme. Le poussoir se déplace linéairement vers le haut et vers le bas et est relié à la plaque de guidage du poussoir qui se déplace, elle aussi, vers le haut et vers le bas lorsque le poussoir bouge. Un ressort conditionnel dont l'une des extrémités est reliée à une plaque à fuseau tournant et l'autre, à la plaque de guidage, déplace un fuseau tournant qui, à son tour, fait pivoter une queue fuselée et une serrure reliée à la queue fuselée. Le ressort assure une plus grande résistance aux tentatives d'effraction de la serrure.

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