Door control device of elevator
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorKunikazu Koura
Life of this patent
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Abstract
An elevator door control device includes an obstruction sensor adapted to detect an obstruction in the vicinity of any one of the vertical frames of the doorway frame and to output an obstruction detection signal, and a door control unit for controlling door opening operation and door closing operation of a car door and a landing door in response to the obstruction detection signal. The obstruction sensor has light emitters provided on the vertical frames of the doorway frame and light receivers provided on the upper frame of the doorway frame. The light emitters are provided in the vicinity of the lower ends of the vertical frames and emit detection lights substantially along the vertical frames. The light receivers are provided on the lower surface of the upper frame and receive the detection lights.
Claims10
An elevator door control device for use in an elevator apparatus with a doorway frame having first and second vertical frame walls and horizontal upper frame wall between the first and second vertical frame walls is located in each of a car doorway and a landing doorway, opening/closing operations of a car door for opening and closing the car doorway and opening/closing operations of a landing door for opening and closing the landing doorway being controlled by the elevator door control device, the elevator door control device comprising:
- an obstruction sensor including a light emitter located on one of (i) the first and second vertical frame walls and (ii) the upper frame wall of at least one of the car doorway and the landing doorway and emitting detection light beams substantially along the first and second vertical frame walls, and a light detector on the other of (i) the first and second vertical frame walls and (ii) the upper frame wall for detecting the detection light beams, and detecting an obstruction proximate the first and second vertical frame walls and outputting an obstruction detection signal upon detection of any obstruction;
- and
- a door control unit for controlling the opening/closing operations in accordance with outputting of the obstruction detection signal.
An elevator door control device for use in an elevator apparatus with a doorway frame having a pair of vertical frame walls and an upper frame wall located between the vertical frame walls located in each of a car doorway and a landing doorway, opening/closing operations of a car door for opening and closing the car doorway and opening/closing operations of a landing door for opening and closing the landing doorway being controlled by the elevator door control device, the elevator door control device comprising:
- an obstruction sensor for detecting an obstruction proximate the vertical frame walls of at least one of the car doorway and the landing doorway and outputting an obstruction detection signal in response;
- an alarm device for issuing an alarm for a passenger;
- and
- a door control unit for controlling the opening/closing operations in accordance with outputting of the obstruction detection signal, wherein the door control unit, upon receiving the obstruction detection signal prior to beginning the door opening operation, causes the alarm device to issue an alarm before staring the door opening operation.
An elevator door control device for use in an elevator apparatus with a doorway frame having a pair of vertical frame walls and an upper frame wall located between the vertical frame walls located in each of a car doorway and a landing doorway, opening/closing operations of a car door for opening and closing the car doorway and opening/closing operations of a landing door for opening and closing the landing doorway being controlled by the elevator door control device, the elevator door control device comprising:
- an obstruction sensor for detecting an obstruction proximate the vertical frame walls of at least one of the car doorway and the landing doorway and outputting an obstruction detection signal in response;
- and
- a door control unit for controlling the opening/closing operations in accordance with outputting of the obstruction detection signal, wherein the door control unit, upon receiving the obstruction detection signal during the door opening operation, stops the door opening operation temporarily.
Dependencies are inferred from the claim text.