Locking device for a sliding door
AssigneeFaiveley S.A.
InventorBernard Monot
Life of this patent
Estimating the term…
Abstract
A sliding door of the type employed in public transport vehicles and driven by an electric motor comprises at least one door-leaf coupled with a nut mounted on an endless screw which is driven in rotation in order to open and/or close the door. The nut is displaced in translational motion within a guide which prevents rotational motion. The locking device comprises means for interrupting the translational displacement of the guided nut at the end of travel and for permitting angular rotation of the nut with the endless screw, means for limiting the angular displacement of the nut and finally means for limiting the translational motion of the nut if it is displaced along the endless screw and no longer engaged in the guide.
Claims21
A device for locking a door, especially a sliding door which is driven by a motor and comprises at least one leaf coupled to a nut mounted on an endless screw which is driven in rotation in order to effect opening and/or closing of the door, said nut being displaced in translational motion within a guide which prevents rotational motion, wherein said locking device comprises means for interrupting the translational displacement of the guided nut at the end of travel and for permitting angular rotation of said nut with said endless screw, means for limiting the angular displacement of said nut and finally means for limiting the translational motion of the nut if said nut is displaced along said screw and no longer engaged within said guide.
A device for locking a sliding door which is driven by a motor and comprises at least one leaf actuated by a linear motor by means of a sliding rod, wherein said rod is provided with a threaded portion on which is mounted a nut coupled to said door leaf, said nut being displaceable in translational motion within a guide which prevents rotational motion, wherein said locking device comprises means for interrupting the translational displacement of said guided nut at the end of travel and for permitting angular rotation of said nut by action of a predetermined movement of translation of said threaded rod, means for limiting the angular displacement of said nut and finally means for limiting the translational motion of the nut if said nut is displaced along said rod and no longer engaged within said guide.
Dependencies are inferred from the claim text.