Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LOCKING MECHANISM FOR LIFT SHAFT DOOR
The present invention provides a door lock turning mechanism for a latch of a lift shaft escape door to prevent inadvertent opening of the door by persons on the non-lift shaft side of the door. The door lock turning mechanism comprises a selectively functional spindle and an activator, the spindle having between first and second ends a laterally stepped surface which defines an annular shoulder extending around the spindle, the second end of the spindle extending above the shoulder. The shoulder has a laterally extending ridge in it. The activator comprises a sleeve for fitting over the second end of the spindle and an engagement member for aligning over the shoulder. The activator has a default state in which it can spin around the second end such that its engagement member can free spin above the shoulder without adequately engaging the ridge for turning the spindle. The activator also has a pressed-in state in which the activator can part spin around the second end, but depending upon the spin direction of the activator relative to the spindle, that spinning will either continue as a free spin, or if turned in the other direction it will bring the engagement member into contact with the ridge, that engagement between the engagement member and the ridge, if the pressing-in is firm enough, being a tight contact to cause further turning of the activator to also turn the spindle. If it is not firm enough, however, the free spin can continue as the engagement member will ride over the ridge.
LOCKING MECHANISM FOR LIFT SHAFT DOOR
The present invention provides a door lock turning mechanism for a latch of a lift shaft escape door to prevent inadvertent opening of the door by persons on the non-lift shaft side of the door. The door lock turning mechanism comprises a selectively functional spindle and an activator, the spindle having between first and second ends a laterally stepped surface which defines an annular shoulder extending around the spindle, the second end of the spindle extending above the shoulder. The shoulder has a laterally extending ridge in it. The activator comprises a sleeve for fitting over the second end of the spindle and an engagement member for aligning over the shoulder. The activator has a default state in which it can spin around the second end such that its engagement member can free spin above the shoulder without adequately engaging the ridge for turning the spindle. The activator also has a pressed-in state in which the activator can part spin around the second end, but depending upon the spin direction of the activator relative to the spindle, that spinning will either continue as a free spin, or if turned in the other direction it will bring the engagement member into contact with the ridge, that engagement between the engagement member and the ridge, if the pressing-in is firm enough, being a tight contact to cause further turning of the activator to also turn the spindle. If it is not firm enough, however, the free spin can continue as the engagement member will ride over the ridge.
LOCKING MECHANISM FOR LIFT SHAFT DOOR
VERRIEGELUNGSMECHANISMUS FÜR AUFZUGSSCHACHTTÜR
MÉCANISME DE VERROUILLAGE POUR PORTE PALIÈRE D'UN ASCENSEUR
PURDOM HANS NICHOLAS (Autor:in) / JONES JEFFREY MICHAEL (Autor:in)
09.02.2022
Patent
Elektronische Ressource
Englisch
Door body structure with output shaft locking mechanism
| Europäisches Patentamt | 2024