Locking system for a lift door

Locking system for a lift door, comprising:

• a bistable locking device which in a stable unlocked state enables opening of the lift door, and in a stable locked state prevents opening of the lift door;
• a reference element;
• a counter element which is provided for entering into interaction with the reference element when at least a condition is fulfilled that the lift car is located in a permissible position relative to a shaft door;
• a sensor which outputs an electrical signal when the reference element and the counter element have entered into interaction, and wherein the reference element, the counter element and the sensor are arranged in a coupling device for coupling the car door to the shaft door;
• a control device which transfers the locking device from the locked state into the unlocked state as a function of the electrical signal, the control device comprising:
• a first switch which is switched into a presence state when the reference element and the counter element have entered into interaction, and into an absence state when said interaction is not present, and a second switch which is switched into a lock state when the locking device is transferred into the locked state, and is switched into an unlock state when the locking device is transferred into the unlocked state;
• such that the locking device upon being supplied with energy will transfer into the unlocked state as long as the first switch is in the presence state and the second switch in the lock state, and the locking device upon being supplied with energy will transfer into the locked state as long as the first switch is in the absence state and the second switch in the unlock state;
• wherein the coupling device has a driver skid configured to be moved for coupling purposes against the reference element arranged on the shaft door, and comprises the counter element;
• and
• wherein the driver skid comprises a support skid, and the counter element is configured to be moved linearly relative to the support skid by the reference element, the sensor outputting the signal when a spacing between the support skid and the counter element, or a force acting between a contact surface of the support skid and the counter element is detected, which lies in a prescribed range.

Locking system for a lift door, comprising:

• a locking device which in an unlocked state enables opening of the lift door, and in a locked state, which prevents opening of the lift door;
• a reference element;
• a counter element which is provided for the purpose of entering into interaction with the reference element when at least a condition is fulfilled that the lift car is located in a permissible position relative to a shaft door;
• a sensor which outputs an electrical signal when the reference element and the counter element have entered into interaction, and wherein the reference element, the counter element and the sensor are arranged in a coupling device for coupling the car door to the shaft door;
• an actuator configured to transfer the locking device from the locked state into the unlocked state;
• wherein the coupling device has a driver skid configured to be moved for coupling purposes against the reference element arranged on the shaft door, and comprises the counter element;
• and
• wherein the driver skid comprises a support skid, and the counter element is configured to be moved linearly relative to the support skid by the reference element, the sensor outputting the signal when a spacing between the support skid and the counter element, or a force acting between a contact surface of the support skid and the counter element is detected, which lies in a prescribed range.