Door exit-delaying means

E - Fixed Constructions – 05 – B

Patent

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Details

292/1, 70/2, 70/

E05B 43/00 (2006.01) E05B 47/00 (2006.01) E05B 63/24 (2006.01) E05B 65/10 (2006.01)

Patent

CA 2036632

In a first embodiment, the invention has a casing set in the frame of a door in confronting relationship to the latchbolt-confining housing of the door. A bolt, translatable in the casing, is extended, by a solenoid, and enters the housing to prevent opening of the door. A latchbolt position sensor, in the form of a dual-ended limb, monitors the position of the latchbolt. Upon withdrawal of the latchbolt, from latching closure of the door, the limb actuates a switch to operate a time delay circuit component. When the specified time delay set by the component has run its course, it cuts power to the solenoid. Compression springs withdraw the bolt from the latchbolt-confining housing, to permit the door to open.

Dans un premier modèle, cette invention présente un boîtier placé dans le cadre d'une porte situé en face du logement du pêne demi-tour de la porte. Le pêne demi-tour, qui se déplace dans le bâti, est dans le prolongement d'un solénoïde et s'insère dans le logement pour empêcher l'ouverture de la porte. Un détecteur de position du pêne demi-tour, comportant deux bras, contrôle la position de ce pêne demi-tour. Lorsque ce dernier quitte la position de verrouillage, le détecteur actionne un contact qui met sous tension un élément de circuit à retardement. Une fois que le délai établi par le circuit est écoulé, ce circuit coupe l'alimentation du solénoïde. Des ressorts de pression dégagent alors le pêne du logement du cadre de la porte pour permettre son ouverture.

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