JPS5928518B2 - Elevator door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door device.

Some elevator door devices are provided with a device that operates when an overload is applied to the door due to obstruction during the opening/closing operation of the door, and the operation of this device drives the door in reverse.

In such a door device, if a passenger accidentally gets his or her hand caught in the gap between the door bag and the door while the door is opening, the door will flip over due to the door opening overload and the door will close. If the door does not come out, a door closing overload will be applied immediately and the door will start opening again.

As the door repeatedly closes and opens in this way, passengers may be seriously injured.

Further, even if a foreign object is caught between the sliding portion of the door and the fixed member that guides it, the door repeats closing and opening, which may cause the door device to malfunction.

The present invention solves the above-mentioned drawbacks and provides an elevator door device that can prevent problems caused by repeatedly opening and closing the door when the opening and closing operation of the door is interrupted. That is.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

In the figure, (+, (→) is the power supply, 1 is the control device for the door (not shown), 2 is the reversing control device that reverses the door when the door overload detection device (not shown) is activated, and 3 is the inversion control device 4 is a normally open contact of a door open abnormality detector of an overload detection device that closes when an overload is applied during the door opening operation of the door;
5 is a door open abnormality detection relay, 5a and sb are normally open contacts, 6 is a normally closed contact of an operation completion detector consisting of a switch that operates when the door reaches the end position of the opening/closing stroke, and γ is the door open contact. The normally open contact of the door-close abnormality detector of the overload detection device which closes when an overload is applied during door-closing operation, 8 is the door-close abnormality detection relay, 8a and sb are normally open contacts, and 9 is the normally open contact. An abnormality detection device consisting of an electromagnetic relay, 9a is a normally open contact,
9b is a normally closed contact, and 10 is a notification device, which is installed at an appropriate location such as the elevator control room or the lobby on the first floor.

That is, the driving device 3 is energized via the control device 1 by the circuit (1)-9b-1-2-3-H to open or close the door.

Further, when the door is activated, the contact 6 is closed.

Now, if the opening operation of the door is interrupted and an overload occurs, the contact 4 will close, the overload detection device will operate, and the reversing control device 2 will cause the drive device 3 to reverse operation. .

At the same time, contact 4 is closed (1)-4-5-6-(-)
The door open abnormality detection relay 5 is energized by the circuit, and the contact 5
a, sb are closed, (-+-)-5a-5-6-
The door open abnormality detection relay 5 is self-held by the circuit (v).

In this way, the door whose opening operation is obstructed is reversed and closed, but if the cause of the obstruction to the door operation is not eliminated even after the door opening operation is reversed and an overload is applied, contact 7 closes. The door-close abnormality detection relay 8 is energized by the circuit (-+-)-7-8-6-(to), and the contacts 8a and sb are closed.

Then, the door closed abnormality detection relay 8 is self-held by the circuit (G)-83-8-6-), and at the same time, the circuit (-83-8-6-)
)-5b-8b-9-H circuit detects abnormality detection device 9.
When the contact 9a is energized, the contact 9a is closed and the contact 9b is opened.

As a result, the driving device 3 is deenergized, so that no driving force is applied to the door and the door stops.

Therefore, it is possible to prevent problems caused by repeated opening and closing of a door whose opening operation is inhibited, such as serious injury to a passenger whose hand is caught.

Further, in this embodiment, by closing the contact 9a, (-1-
)-9a-10-H activates the reporting device 10.

This allows the manager, etc. to rescue a passenger whose hand has been caught, or to eliminate factors that are preventing the door from opening/closing. <Can be implemented.

Note that when the door is manually moved to the door open or door closed position after performing emergency treatment after the abnormality detection device 9 operates, the contact point 6 is opened.

Therefore, door open and door closed abnormality detection relays 5 and 8 are deenergized, respectively.

Furthermore, even if the door is blocked during the door closing operation, the contact 7 is closed and the door closed abnormality detection relay L and the door open detection relay 5 are sequentially energized. An effect similar to that during the opening operation can be obtained.

As explained above, the present invention deenergizes the door drive device when the door is reversely driven when an overload is applied during the opening/closing operation of the door, and an abnormality in opening or closing the door occurs during one operation stroke. This is what I did.

Thereby, when the opening/closing operation of the door is obstructed, it is possible to prevent a problem caused by the door repeatedly opening and closing the door in reverse.

[Brief explanation of the drawing]

The figure is a main part electric circuit diagram showing an embodiment of an elevator door device according to the present invention. 2... Reversing control device, 3... Drive device, 4... Door open abnormality detector normally open contact, 5...
... Door open abnormality detection relay, 6 ... Operation end detector normally closed contact, 7 ... Door closed abnormality detector normally open contact,
8... Door closed abnormality detection relay, 9... Abnormality detection device.

Claims (1)

[Claims] 1. A door that is opened and closed by a drive device, a door opening abnormality detector that operates when an overload is applied during the opening operation of this door, and a door opening abnormality detector that operates when an overload is applied during the door closing operation of the door. an overload detection device having a door closing abnormality detector; a reversing control device that operates the drive device in reverse when the overload detection device operates; and a reversing control device that operates when the door operates and reaches the end of the opening/closing stroke. and an abnormality detection device that operates through the operation of the door open abnormality detector and the door closed abnormality detector when the door is in operation and before the operation end detector operates, An elevator door device that deenergizes the drive device by the operation of a detection device.