Door operator for elevators having curved doors
First Claim
1. An elevator door assembly for positioning an elevator door along an arcuate pathway comprising:
- an actuator including an actuating rod having a first end and a second end, and wherein the second end of the actuating rod is linearly displaceable from a retracted position to an extended position;
a support arm having first and second ends, the first end of the support arm being mounted for pivotal rotation, and the second end of the support rod being connected, to a moveable elevator door panel;
a linkage arm having first and second ends, the first end of the linkage arm being pivotally connected to the second end of the actuating rod, the second end of the linkage arm being pivotally connected to the support arm;
an elongate upper guide track including at least two generally planar upper support surfaces, wherein the planes of the upper support surfaces are each at a slight angle from the horizontal plane; and
at least one carriage assembly including,a carriage frame and at least two wheels each supported by, and in rolling contact with, one of the at least two support surfaces on the guide track,a hinge pin supported by the carriage frame, including a threaded portion thereon,a carriage connector mounted on the door panel and having a threaded aperture for receiving the hinge pin for pivotal connection of the door panel to the carriage assembly;
whereby the linear displacement of the actuating rod is translated via the linkage arms into an angular rotation of the support arms, thereby driving the door panels along the arcuate pathway.
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Accused Products
Abstract
An elevator door operator for positioning elevator doors along an arcuate pathway includes a linearly displaceable actuator and a pair of linkage arms, each pivotally connected to the other and connected to one end of the linearally displaceable actuator. The linkage arms are also each pivotally connected at their opposite ends to each of two support arms, each of which support arms are pivotally connected at one of their ends to each other and secured at their opposite ends, respectively to each of the door panels. The door operator may be provided as part of a door assembly which additionally includes an upper guide track comprising an elongate bar including at least two generally planar support surfaces, which guide track is mounted above the door opening to define an arcuate door travel pathway, two door panels, suspended from the upper guide track via a carriage assembly which includes a carriage frame and at least two wheels each supported by, and in rolling contact with, at least two of the support surfaces on the guide track, and a hinge pin extending from the carriage frame to pivotally connect the carriage assembly to the door panel. One embodiment operates a single door for positioning along an arcuate pathway.
16 Citations
5 Claims
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1. An elevator door assembly for positioning an elevator door along an arcuate pathway comprising:
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an actuator including an actuating rod having a first end and a second end, and wherein the second end of the actuating rod is linearly displaceable from a retracted position to an extended position; a support arm having first and second ends, the first end of the support arm being mounted for pivotal rotation, and the second end of the support rod being connected, to a moveable elevator door panel; a linkage arm having first and second ends, the first end of the linkage arm being pivotally connected to the second end of the actuating rod, the second end of the linkage arm being pivotally connected to the support arm; an elongate upper guide track including at least two generally planar upper support surfaces, wherein the planes of the upper support surfaces are each at a slight angle from the horizontal plane; and at least one carriage assembly including, a carriage frame and at least two wheels each supported by, and in rolling contact with, one of the at least two support surfaces on the guide track, a hinge pin supported by the carriage frame, including a threaded portion thereon, a carriage connector mounted on the door panel and having a threaded aperture for receiving the hinge pin for pivotal connection of the door panel to the carriage assembly; whereby the linear displacement of the actuating rod is translated via the linkage arms into an angular rotation of the support arms, thereby driving the door panels along the arcuate pathway. - View Dependent Claims (2, 3, 4, 5)
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Specification