JP2001058781A - Door device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator door device capable of shortening the time until door closing when a beam of light is shut off and enhancing the operating efficiency. SOLUTION: This door device for an elevator is structured so that a beam of light 5 is allowed to pass near the door 2 in the door opening/closing direction and the door 2 is hindered from closing when the beam 5 is shut off, wherein the door closing motion is stopped in that position which the door takes when the beam 5 is shut off, and thereafter the closing motion is made from the stop position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door device.

[0002]

2. Description of the Related Art In general, as an elevator door device, a light beam is passed near the door in the opening / closing direction of the door. Something to prevent has been proposed.

[0003]

In the above-mentioned proposal, the door stops and the door is once opened to the open end and then closed again. For this reason, there is a problem that it takes time until the car moves, which impairs the operation efficiency.

[0004] It is an object of the present invention to provide an elevator door device capable of shortening the time until the door is closed when the beam is cut off and improving the operation efficiency.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a light beam is passed near a door in the opening and closing direction of the door, and when the light beam is cut off, the closing operation of the door is prevented. In the door device, when the light beam is cut off, the closing operation of the door is stopped at the position, and thereafter, the closing operation is performed from the stopped position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an elevator provided with an elevator door device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of the elevator door device according to an embodiment of the present invention, and FIGS. FIG. 5 is an operation diagram showing an opening / closing operation.

In FIG. 1, reference numeral 1 denotes a car, and a car door 2 is provided at the entrance of the car 1. Reference numeral 3 denotes a light projector near the car door 2 that allows the light beam 5 to pass in the opening and closing direction of the car door. Reference numeral 4 denotes a light receiver. The light projector 3 and the light receiver 4 constitute a photoelectric device. Reference numeral 6 denotes a floor door, and reference numeral 7 denotes a floor.

In FIG. 2, a contact 10 is turned off when the beam 5 is cut off by an object.
1 is excited. 12 is a contact that turns on when the door is closed,
Reference numeral 13 denotes a close limit switch, and reference numeral 14 denotes a door closing relay. When the door closing relay 14 is excited, a motor (not shown) is driven to close the door 2. 15 is a contact that turns on when the door opens, 16 is an open limit switch, 1
Reference numeral 7 denotes a door opening relay. When the door opening relay 17 is excited, a motor (not shown) is driven to open the door 2. Reference numeral 18 denotes a contact which turns on when the door 2 is open and turns off when the door 2 is closed for a predetermined distance, for example, at a closed end of 50 cm. When the contact 18 is on, the open zone relay 19 is excited. I have.

Now, when the contact 12 enters, P-12-11a
A circuit 13-13b-14-N is configured, the door closing relay 14 is excited, and a motor (not shown) is driven to close the door 2. At this time, the contact is self-held by turning on the contact 14a. Shortly after the door 2 starts to close, when the beam 5 is cut off, the contact 10 is turned off and the photoelectric relay 11 is de-energized. For this reason, the contact 11a is turned off, the circuit of the door closing relay 14 is cut off, and the relay 14 is de-energized.
Stops at this position. When the interruption of the beam 5 is released, the contact 11a is turned ON, and P-19a-11a-13-
In the circuit configuration of 17b-14-N, the door 2 performs the closing operation again from that position, and the closing limit 13 is turned off and stopped. FIG. 3 shows an operation diagram of the door 2 at this time.

When the beam 5 is cut off within 50 cm of the closed end of the door 2, the contact 11a is turned off, the door closing relay 14 is de-energized, and the door 2 stops. Thereafter, since the open zone relay 19 is de-energized by turning off the contact 18, the contact 19b is turned on, and P-11b-19b-16
Door opening relay 17 by the circuit configuration of -14b-17-N
Is excited, and is self-held by the ON of the contact 17a,
Even if the interruption of the beam 5 is released, the beam 5 is opened by a motor (not shown) until the open end. After the opening operation, the contact 12
Is turned on again, the closing operation is performed again.

FIG. 4 shows an operation diagram of the door 2 at this time.
It is.

Thus, when the door 2 enters the closing operation,
When the light beam 5 is cut off, the door 2 is stopped in this state, and the closing operation is performed again from this position, so that the closing operation of the door can be performed in a short time.

If the door 2 is located near the closed end and it is difficult to get in, the contact 2, the open zone relay 19, and the contacts 19 a and 19 b are added to open the door 2 once, and then close the door 2. It can also work.

[0014]

According to the present invention, even when the light beam is shut off during the closing operation of the door, the time required for closing the door at this position and performing the closing operation again can be shortened. .

[Brief description of the drawings]

FIG. 1 is a plan view of an elevator including an elevator door device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of an elevator door device according to an embodiment of the present invention.

FIG. 3 is an operation diagram of the door when the beam is shut off during the door closing operation.

FIG. 4 is an operation diagram of a door when a beam is shut off near a door closed end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Basket 2 Car door 3 Emitter 4 Receiver 5 Beam 6 Floor door 7 Floor

Claims (2)

[Claims] 1. An elevator door apparatus wherein a light beam is passed in the vicinity of a door in a direction in which the door is opened and closed, and when the light beam is shut off, a closing operation of the door is prevented. To stop at that position, and then
A door device for an elevator, wherein a closing operation is performed from the stop position. 2. The elevator door apparatus according to claim 1, wherein when the door is closed to a predetermined position and the light beam is shut off, the door is once opened and then closed.