JPS5928520B2 - Elevator door opening/closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for opening and closing an elevator door.

Generally, the operation of an elevator car is controlled by hall calls and car calls.

In other words, the car stops at the floor where there is a car call for its own car and a landing call to be serviced, and after answering the car call or landing call, it returns to the floor where the next car call or landing call is called. Leave for the floor.

When the car stops at the floor of the last car call of its own car, the door is opened at that floor and if the car call is not registered even after a certain period of time has elapsed after the passengers in the car have exited the car, the door is opened. Close the door and leave for the floor where the next call is to be serviced.

At this time, if there is no call for a landing to service this car, the car usually waits on that floor with the door closed.

However, as mentioned above, after the car stops at the landing to answer the call for the last car, and the passengers in the car get off,
Even if there is a passenger in the car, the passenger does not know to press the destination floor button, has forgotten to press the destination floor button, or is a child who cannot reach the destination floor button. If the person is disabled or unable to press the destination floor button due to other reasons, the call will not be registered even after a certain period of time has passed, resulting in the same phenomenon as described above.

In such a case, if the car waits with the door closed, the passenger inside the car will not be able to press the destination floor button, resulting in the same situation as being trapped.

Furthermore, when a car departs for the next floor with a hall call to be serviced, it may depart in the opposite direction to the floor to which the passengers in the car are trying to go, and Even if the vehicle departs in the same direction as the floor that the passenger in the car is trying to go to, the passenger in the car may pass through the floor the passenger in the car is trying to go to before the passenger in the car notices.

The present invention is intended to improve the above-mentioned drawbacks, and aims to provide an elevator operating device that prevents passengers from being trapped in a car or being taken away to a floor that they do not desire.

Hereinafter, an embodiment in which the present invention is applied to an elevator with 10 stops will be described with reference to the drawings.

In the figure, 1 to 10 are call signals that become "1" when the destination floor buttons for floors 1 to 10 are pressed in the car, respectively, and 11
An in-car load signal that becomes “1” when there is an in-car load;
12 is a door close signal that is "1" when the car door is closed, 13 is a stop signal that is "1" when the car is stopped, and 14 is a "1" signal when the car door is open. 15 is an OR gate, 16 is an AND gate, (the small circle at the input indicates that the input is inverted here.

)17 is set when an input signal "1" is given to the S terminal, outputs an output signal "1" from the Q terminal, maintains this state even if the input signal to the S terminal becomes "0", and R When the input signal "1" is given to the terminal, it is reset and the output signal from the Q terminal becomes "0", and the input signal to the R terminal becomes "0".
''; 18 is a delay circuit that operates when the input signal is ``1'' and outputs the door opening command signal 18a after a certain period of time; 19 is a delay circuit that operates when the input signal is ``1'';
This is a buzzer that operates when

Note that the circuit shown in the figure is provided for each car.

Next, the operation of this embodiment will be explained.

Now, after the car has stopped at the landing to answer the final car call of its own car, the door has been opened, and the passengers in the car have exited the car, 1 Å
It is assumed that the above number of passengers board the car and the door is closed after a certain period of time.

At this time, if none of the destination floor buttons are pressed, the car call signals 1 to 10 are all "0" and the door open signal 14 is also "0", so the output of the OR gate 14 is is r
OJ Good luck.

Furthermore, from either of the above states, the in-car load signal 11, the door close signal 12, and the stop signal 13 are all "1".

In this way, all the input signals of the AND gate 16 are "1"
Therefore, even if the output signal of the AND gate 16 becomes "1", it is input to the S terminal of the memory 17, so the memory 17
is set, and the output signal from the Q terminal becomes "1".

This output signal causes the buzzer 19 to emit a sound to prompt passengers in the car to press the destination floor button.

When a passenger in the car presses the destination floor button due to the sound of the buzzer 19, one of the car call signals 1 to 10 becomes "1", and the output of the OR gate 15 becomes "1", so the memo IJ
The input signal of the R terminal of 17 becomes "1", and the memory 17
is reset, the output signal from the Q terminal becomes "0", and the buzzer 19 stops emitting sound.

After this, the car departs for the next floor to be serviced.

In addition, if a passenger in the car does not press the destination floor button due to a child who cannot reach the destination floor button, a disabled person, or other reasons, the buzzer 19 will be activated by the output signal from the Q terminal when the memory 17 is set. At the same time, the delay circuit 1
8 also operates, and the door opening command signal 18a becomes "1" after a certain period of time.
becomes.

This door opening command signal 18a activates a door opening device (not shown) to open the door, thereby preventing passengers from being trapped inside the car.

In the above embodiment, the buzzer 19 prompts passengers in the car to press the destination floor button, and if a car call is not registered even after a certain period of time has passed from the start of notification, the door is opened. , the door may not be opened and the door may only be notified, or the door may only be opened without the notification.

Furthermore, although the buzzer 19 is used as the notification device, it may be possible to notify by voice, text, or the like.

As explained above, in this invention, when the car closes the door on a floor, the door is forcibly opened when no destination floor buttons are pressed even though there are passengers in the car. Therefore, it is possible to prevent passengers from being trapped in the car or being taken away to floors they do not desire, and it is possible to provide safe and friendly service to passengers.

[Brief explanation of drawings]

The figure is a logic circuit diagram showing an embodiment of an elevator door opening/closing device according to the present invention. 1-10...1st-10th floor call signal, 11.
...Car load signal, 12...Door close signal, 13...Stop signal, 14...Door open signal, 15...OR Gate, 16...
AND gate, 17... Memory, 18...
... Delay circuit, 18a ... Door open command signal,
19...Buzzer.

Claims (1)

[Claims] 1. In an elevator that closes the door a predetermined time after the door opens, a passenger detection device detects the presence of a passenger in the car, a door closed detection circuit detects that the door is closed, and a car call is heard in the car. When the door closed detection circuit is activated while the passenger detecting circuit and the passenger detecting device are operating and the door is activated, the door is opened. An elevator door opening/closing device characterized by being equipped with a forced door opening circuit.