JPH0750385Y2 - Elevator door controls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a door control device for an elevator having a device for extending a door opening time.

[Conventional technology]

Conventionally, in the elevator for luggage, Japanese Patent Publication No. 56-15388
As disclosed in Japanese Patent Publication, when it is considered that the loading and unloading time of the luggage is considered to be long, the open extension button is pressed,
For example, the door is extended for 30 seconds. When the loading / unloading operation of the luggage is completed, the release button can be operated to cancel the opening extension operation.

[Problems to be solved by the device]

The above-mentioned conventional device operates the release button to drive the car as soon as the user finishes carrying in the luggage when carrying the luggage into the car, but when carrying out the luggage from the car, it remains as it is after carrying out the luggage. There is a problem that even if the car is called on another floor, the car will stop until the extension time is completed, and the users on the other floor will wait for a long time and the operating efficiency of the elevator will be reduced.

An object of the present invention is to provide an elevator door control device capable of preventing the car door from being left open after the opening / extending operation.

[Means for Solving the Problems]

In order to achieve this object, the present invention performs an opening / extending operation for extending a predetermined period of time for opening and closing the elevator doors by operating the opening / extending button provided in the elevator car or the hall. And open the extension release button,
In an elevator door control device having a door closing means for releasing the opening / extending operation to close the door, when the opening / extending operation is being performed, a detection signal is output when the load load in the car becomes equal to or less than a predetermined value. A load detecting device for outputting, a broadcasting means for broadcasting that the opening and extending operation is stopped by the detection signal output by the load detecting device, and the predetermined time after the load detecting device outputs the detection signal And an opening extension stopping means for operating the door closing means after a shorter predetermined time has elapsed.

[Action]

Since the present invention is configured as described above, when the open / extend button is operated to carry out the luggage from the car and the load / load in the car becomes equal to or less than the predetermined value during the open / extend operation, the load detection is performed. According to the detection signal output from the device, the broadcasting means broadcasts, for example, "Please operate the release button early", and the door closing means is activated after a predetermined time has elapsed from the output of the signal, so that the door closes immediately and other The waiting time for the user can be significantly reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a circuit diagram showing an embodiment of an elevator door control device of the present invention, and FIG. 2 is an enlarged view of a main part of a driving panel in a car.

In the figure, although not shown in the drawing, 1 is a driver's panel provided inside the car, 2 is a car call button, 3 is an open extension button, 4 is a button for canceling the operation of the open extension button, P and N are control power supplies, 3a is a normally open contact of the open extension button 3, 4b is a normally closed contact of the release button 4, 13 is an open extension command relay, which is a normally open contact 3a, a normally closed contact 4b, and normally closed contacts 14Tb ₁ , 19Tb ₁ and Open extension command relay 13 controls power P
It is connected in series between −N, and the opening extension operation is performed when the opening extension command relay 13 is energized. 13a ₁ and 13a ₂ are normally open contacts of the open extension command relay 13, 14T is a timer that is activated by closing the normally open contact 13a ₂ , and normally closed contacts 14Tb ₁ and 14Ta ₁ that are released after a predetermined time. Have. Reference numeral 15 is a load detection device for detecting the load inside the car which starts detection when the normally open contact 13a ₃ is closed, and outputs an output signal at a predetermined value or less. 16 is a load detection relay that is energized by the output signal of the load detection device 15,
It has normally open contacts 16a ₁ and 16a ₂ . A voice synthesizer 17 is activated by closing the normally open contact 16a ₁ , and broadcasts voice guidance such as "please operate the release button early" from the speaker 18. 19T
It is a timer that is by connexion biased in the closing of the normally open contact 16a _2, with normally open contacts 19Ta _1, the normally closed contact 19Tb _1. Reference numeral 22 is a door circuit that operates by closing a normally open contact 20a with a closed button (not shown) and a normally open contact 21a with an open button (not shown). Normally open contacts 19Ta ₁ and 14Ta ₁ are connected in parallel with the normally open contact 20a. ing.

Next, the operation of the present invention will be described.

Now, when carrying a luggage using an elevator and unloading a luggage on an arbitrary floor, a luggage carrier operates the opening extension button 3. Then, the circuit of P-3a-4b-14Tb ₁ -19Tb ₁ -13-N is formed, the open extension command relay 13 is energized, and
Since the timer 14T is energized by the -13a ₂ -14T-N circuit, the car door remains open until the normally closed contact 14Tb ₁ is released and the normally open contact 14Ta ₁ is closed. Retained. Here, the luggage carrier carries out the luggage in the car. Further, the load detection device 15 is activated by closing the normally-open contact 13a ₃ , and the end of unloading of the luggage is detected, that is, the load detection device detects that the load load in the car is less than or equal to a predetermined value. When 15 outputs a detection signal, the load detection relay 16 is energized, the voice synthesizer 17 is activated by closing the normally open contact 16a ₁ , and the speaker 18 "please operate the release button earlier. ”Etc. voice guidance. When the luggage carrier who hears this guidance broadcast operates the release button 4, P-13a _1-
Since the circuit of 4b-14Tb ₁ -19Tb ₁ -13-N is released, the open extension command relay 13 is deactivated and the open extension can be released. Here, if the luggage carrier does not operate the release button 4, the door is opened by the normally open contact 19Ta ₁ which is closed when the timer 19T which is energized by closing the normally open contact 16a ₂ reaches a predetermined time. Start circuit 22 and close the door.

[Effect of device]

According to the present invention, when the open / extend button is operated to carry out a load from the car and the load / extension in the car becomes a predetermined value or less when the open / extend operation is performed, the detection is output by the load detection device. In response to the signal, the broadcasting means broadcasts, for example, "Please operate the release button early", and the door closing means is operated when a predetermined time has elapsed from the output of the signal, so the user operates the open / extend button. After carrying out the door extension operation and carrying out the luggage, walk away without operating the release button, and when the door is left in the open extension state, operate the car call button on another floor There is an effect that the useless waiting time of the user waiting for the arrival of the car can be eliminated and the driving efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of an elevator door control device of the present invention, and FIG. 2 is an enlarged view of a main part of a driving panel in a car. 3 ... Open extension button, 4 ... Release button, 14T, 19T ... Timer,
15: load detection device, 17: voice synthesizer, 18: speaker, 22: door circuit.

Claims (1)

[Scope of utility model registration request] 1. When an opening / extending button provided in an elevator car or a landing is operated, an opening / extending operation is performed to extend the opening time of the elevator door until the door is closed for a predetermined time.
When the opening / extending release button is operated, in the elevator door control device having the closing means for releasing the opening / extending operation to close the door, the load load in the car is increased when the opening / extending operation is performed. A load detection device that outputs a detection signal when it becomes a predetermined value or less, a broadcasting means that broadcasts that the opening extension operation is stopped by the detection signal output by the load detection device, and the load detection device detects the detection signal. The door control device for an elevator, comprising: an opening / extending stopping means for operating the door closing means after a predetermined time shorter than the predetermined time has elapsed after the output of.