Device for connecting a car door with a shaft door and for locking and unlocking the doors, a device for emergency unlocking of a car door and a method for emergency unlocking of a car door
A device for connecting a car door with a shaft door and for emergency unlocking of a car door consists of an entrainer arranged at the car door, which entrainer detachably connects, together with a roller pair arranged at the shaft door, the car door with the shaft door, and of a first locking mechanism for locking and unlocking the car door and of a second locking mechanism for locking and unlocking the shaft door. When the doors are closed and locked the entrainer is closed and can freely move between the two rollers of the roller pair when the elevator car is traveling between two floors or past a floor not to be served. The first locking mechanism is controlled directly.
1. A device for emergency unlocking of an elevator car door, wherein an entrainer is arranged at the car door with rails to lock and unlock the car door with a first locking mechanism comprising: an emergency lever pivotally mounted on the car door and actuatable into engagement with the first locking mechanism for unlocking the car door, and wherein said emergency lever is accessible if the car door is outside a normal access range with respect to a stopping point and only if a shaft door at the stopping point is open.
2. The device according to claim 1 wherein said emergency lever is actuable by a pull means attached thereto.
3. The device according to claim 1 wherein the entrainer and said emergency lever are fastened on the car door by a base plate.
4. The device according to claim 2 wherein said pull means is a pull line.
5. A method for emergency unlocking of an elevator car door, wherein an entrainer with rails is arranged at the car door to lock and unlock the car door by a first locking mechanism, comprising the steps of:
rotatably mounting an emergency lever on the car door adjacent to the first locking means;
opening a shaft door at a stopping point; and
actuating the emergency lever to engage the first locking means and unlock the car door if the car door is outside a normal access range with respect to the stopping point.
6. A device for emergency unlocking of an elevator car door, comprising:
an entrainer is arranged at the car door with rails;
a first locking mechanism cooperating with said rails for locking and unlocking the car door; and
an emergency lever pivotally mounted on the car door and actuatable into engagement with the first locking mechanism for unlocking the car door if the car door is outside a normal access range with respect to a stopping point and only if a shaft door adjacent the stopping point is open.
7. The device according to claim 6 wherein said emergency lever is actuable by a pull means attached thereto.
8. The device according to claim 7 wherein said pull means is a pull line.