| 摘要 |
A door locking system for a vertically hung door (1), comprising at least two elongate axially displaceable locking elements (13) mounted to the door (1) and separately resiliently loaded towards their door locking engagement with positionally fixed locking elements (16), locking elements operator means (23-29;55-64) adapted for manual or remote operation, and means (22) for operationally coupling the locking elements with said operator means, the arrangement being such that actution of the operator means causes simultaneous operation of the displaceable locking elements (13) against the resilient loading (19) thereof when it is required to unlock the door and to allow the movable elements (13) separately to engage their associated fixed locking elements when the door is in its closed lockable position. |
