ELEVATOR DOOR SYSTEM

摘要

Disclosed is an elevator door system. The elevator door system comprises retiring cam equipped to one side of a car, a coupling device for opening/closing a car door interconnected with a motor at a center of the car, a separation coupling plate equipped to a landing floor while being interconnected with the coupling device, and an unlock roller interconnected with the retiring cam, and further comprising a variable coupling device 200A equipped to the car, and comprising a pair of vertical clutch plates 210 and 211, one being fixed while the other is able to move against the fixed clutch plate such that the clutch plates contact each other when the car door is closed and are separated from each other when the car door is opened, a clutch plate lever 220 interconnected with the clutch plate 211 to separate the clutch plate 211 from the clutch plate 210, if necessary, and a cam plate 250 to drive a separating operation of the clutch plate lever 220, a power-free coupling device 10OA equipped to the landing floor to unlock the landing door 100 by contacting and pushing a first push roller 125 without power when the power-free coupling device 100a is horizontal to the vertical clutch plates 210 and 211, and a switch unit 275 equipped to a car frame 270 to accelerate or decelerate the car door in conjunction with a switch shaft 262 acting as a rotational shaft of a cam plate lever 260 movably fastened at a lower end to one side of the cam plate 250 when opening or closing the car door according to movement of the cam plate 250.