JPH06211474A - Control device of elevator door - Google Patents

Abstract

PURPOSE:To improve driving efficiency as well as to shorten waiting time of another passenger by carrying out door closing control before expiration of a specified period of time for door opening extension at the time of detecting no passenger in a passenger cage or at a platform of an elevator after a door opening extension button is operated. CONSTITUTION:When a passenger cage completes opening door, a normally opened contact point 1a is closed. A door closing command circuit 2 works, at the time when a door opening extension button 3 is in non-operation, as a normally opened contact point 4a1 of a door opening extension detection relay 4 is closed. On the other hand, when the door opening extension button 3 is operated, door opening extension detection relay 4 is energized and simultaneously it is self-held. At this time, as a normally closed contact point 4b is opened, action of the door closing command circuit 2 is blocked. Thereafter, when the door opening extension button 3 is not operated, a door opening extension time timer 6 completes measurement of door opening extension time and opens a normally closed contact point 6b, or a door closing button is operated and a normally closed contact point 5 is opened, or a passenger detection relay 8 is de-energized and a normally opened contact point 8a is opened and the door opening extension detection relay 4 is de-energized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for elevator doors.

[0002]

2. Description of the Related Art An elevator responds to a call by automatically opening a car door after landing on a floor that has a call, and closing the door after a predetermined time, for example, 5 seconds, to respond to the next call. At this time, a door opening extension button for opening the car door for a long time may be provided in the car in case that it takes a long time to carry the luggage in and out of the car. However, if the user does not operate the door close button even after the loading / unloading of the luggage is completed, the elevator does not respond to other calls until the predetermined door open extension time expires. Therefore, at this time, if there is a user on another floor, there is a problem that not only the long waiting time but also the operation efficiency of the elevator is lowered. As a means for solving this problem, for example, there is an elevator door control device disclosed in Japanese Patent Laid-Open No. 2-295882 for the purpose of urging the user to press a door close button.

[0003]

By the way, in the above-mentioned prior art, when the user forgets to press the door-closing button or when he pushes the door-opening extension button by mischief, the predetermined door-opening is still required. Until the extension time expires, the car door cannot be closed and the elevator cannot accept another call. Further, when the user is carrying a luggage and both hands are blocked, it is troublesome for the user to press the door close button.

An object of the present invention is to provide an elevator door control device which shortens the waiting time of other users and further improves the operation efficiency.

[0005]

The object of the present invention is to provide an elevator car and means for detecting passengers on the landing side, for example, by providing a passenger detection device such as a load detection device,
After the door open extension button of the elevator is pressed, the detection signal from the passenger detection device is in both the elevator car and the hall, and the door close control is performed before the predetermined door open extension time expires. This is accomplished by providing a door control.

[0006]

According to the present invention, after the user operates the door open extension button to carry in / out the luggage into / from the car, the carrying-in / out work is finished, and the passengers from the passenger detecting device at the car and the landing When the detection signal disappears, that is, in the car and at the hall side,
When both the user and the baggage are no longer present, door closing control is performed before the predetermined extended period of door opening expires.

As a result, the elevator is immediately ready to accept calls from other floors, so that not only the waiting time for other users can be shortened, but also the operating efficiency can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a circuit diagram of a main part of an elevator door control device according to an embodiment of the present invention.

A series circuit composed of a normally open contact 1a for detecting the completion of opening of a car door, a normally closed contact 4b of a door open extension detection relay 4, and a door close command circuit 2 is connected in parallel to the power supplies P and N. Has been done. Also, the door open extension button 3 and the door open extension detection relay 4
Is connected in parallel, and the door open extension detection relay 4 includes a normally open contact 4a1 of the door open extension detection relay 4, a normally closed door close button 5, a normally closed contact 6b of an open extension time timer 6, and a passenger. The detection relay 8 is self-held by a series circuit including a normally open contact 8a. Further, the normally open contact 4a of the door open extension detection relay 4
2, a series circuit including a door-open extension time timer 6, a passenger detection device 7 provided in a car and a hall, and a passenger detection relay 8 that is energized when the passenger detection device 7 detects a user. Are connected in parallel.

The passenger detecting device can be realized by providing a load detecting device under the floor or an obstacle detecting device using infrared rays or ultrasonic waves.

Next, the operation of such a circuit will be described. First, when the car corresponding to the call is landed and the door opening is completed, the normally open contact 1a is closed. When the door open extension button 3 is not pressed, the normally open contact 4b of the door open extension detection relay 4 is in the closed state, so the door close command circuit 2 operates to perform the door close control.

When the door open extension button 3 is pressed, the door open extension detection relay 4 is energized, and at the same time, the door open extension detection relay 4 is pressed.
Is a normally open contact 4a of a door open extension detection relay 1, a normally closed contact of a door close button 5, a normally closed contact 6b of a door open extension time timer, a passenger detection detection relay 8 which is closed when passengers in the car and at the hall are detected.
It is self-held by the normally-open contact 8a. At this time, since the normally closed contact 4b for operating the door closing command circuit is open, the operation of the door closing command circuit 2 is blocked.

In the door open extension detection relay 4, whether the door open extension time timer 6 has finished measuring the door open extension time after the door open extension button 3 is no longer pressed, and the normally closed contact 6b opens. The door close button is pressed to open the normally closed contact 5, or the passenger disappears from the car and the hall, and the passenger detection relay 8
Is normally deenergized and the normally open contact 8a is deenergized under any one of the conditions. When the door open extension detection relay 4 is de-energized, the normally closed contact 4b is closed, the door close command circuit 2 operates, and the elevator car door is closed.

As described above, after the door open extension button is pressed,
When the passenger detection device detects that passengers have disappeared from the car and the hall, that is, the passenger detection device operates the door closing command circuit before the door opening extension time expires even if the door closing button is not pressed. Not only the waiting time for other users can be shortened, but also the operation efficiency of the elevator can be improved.

[0015]

According to the present invention, by providing the passenger detection device in the car and the hall, after operating the door open extension button, the user forgets to operate the door close button after the work is completed. Also, when it is difficult to operate the door close button, or when the door open extension button is operated by mischief, the passenger detection device detects that there is no user in the elevator car or at the hall side. Then, since the door closing control is performed before the predetermined door opening extension time expires, not only the waiting time for other users can be shortened but also the operation efficiency of the elevator can be improved.

[Brief description of drawings]

FIG. 1 is an electrical connection diagram showing an embodiment of a control device for elevator doors according to the present invention.

[Explanation of symbols]

1a ... Door open completion detection contact, 2 ... Door close command circuit, 3 ... Door open extension button, 4 ... Door open extension detection relay, 4a1, 4a2, 4
b ... Door open extension detection relay contact, 5 ... Door close button, 6 ... Door open extension timed timer, 6b ... Door open extension timed timer contact, 7
... passenger detection device, 8 ... passenger detection relay, 8a ... contacts of the passenger detection relay.

Claims (1)

[Claims] 1. An elevator car, after landing in response to a call,
A control device for opening a car door and closing the car door after a predetermined time, a door closing button for manually closing the car door, and a control device for an elevator door provided with a door opening extension button for extending the door opening. After the operation, the elevator car and the elevator door control device having means for performing door closing control after the absence of passengers is detected by the passenger detection means provided on the elevator hall side .