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US 5,246,089 AGranted
Door drive apparatus with locking mechanism for elevators
AssigneeInventio AG
InventorsJosef Husmann, Franz Weingertner
Life of this patent
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AssigneeInventio AG
InventorsJosef Husmann, Franz Weingertner
Estimating the term…
A door drive apparatus with a locking mechanism for elevator doors permits the opening of the car door situated in the region of a floor together with a coupled-on shaft door, driven automatically in the normal case or manually in the case of a power failure. If the elevator car is situated outside a floor region, the car door remains locked. A control cam mounted at the upper end of a car door leaf is connected with a door drive by a belted drive means and causes a low-jerk opening and closing of the car door at the closing end of travel. The control cam is connected by a pull rod to an entraining member parallelogram for the coupling of the shaft door to the car door. A locking mechanism on the upper end of the same door leaf has an actuating roller which is actuated by a double lever connected to the control cam and the pull rod for the unlocking when the car is located in the door opening region of a floor.
In a door drive apparatus with locking mechanism for elevators, the elevators having a car door movable by a door drive and in the door opening zone of floors connectable through a coupling mechanism with a shaft door, wherein the coupling mechanism includes an entraining member parallelogram mounted on a car door leaf and two coupling rollers respectively positioned at each shaft door, the door drive including a drive motor mounted on the car driving a drive means which is connected through an actuating device with the car door and moves the car door to the closed and the open settings, and the locking mechanism includes a pivotably mounted car door latch which is monitored by a safety contact, is arrestable at an abutment, locks by its own weight in a retaining position and which is urgeable by the actuating device into a releasing position, the actuating device comprising:
A door drive apparatus with locking mechanism for an elevator, the elevator having a car door movable by a door drive and in the door opening zone of floors connectable through a coupling mechanism with a shaft door, wherein the coupling mechanism includes an entraining member parallelogram mounted on a car door leaf and two coupling rollers respectively positioned at each shaft door, the door drive including a drive motor mounted on the car driving a drive means which is connected through an actuating device with the car door and moves the car door to the closed and the open settings, and the locking mechanism includes a pivotably mounted car door latch which is monitored by a safety contact, is arrestable at an abutment, locks by its own weight in a retaining position and which is urgeable by the actuating device into a releasing position, comprising:
A door drive apparatus with locking mechanism for an elevator, the elevator having a car door movable by a door drive and in the door opening zone of floors connectable through a coupling mechanism with a shaft door, wherein the coupling mechanism includes an entraining member parallelogram mounted on a car door leaf and two coupling rollers respectively positioned at each shaft door, the door drive including a drive motor mounted on the car driving a drive means which is connected through an actuating device with the car door and moves the car door to the closed and the open settings, and the locking mechanism includes a pivotably mounted car door latch which is monitored by a safety contact, is arrestable at an abutment, locks by its own weight in a retaining position and which is urgeable by the actuating device into a releasing position, comprising:
Dependencies are inferred from the claim text.