JPS6031754B2 - Elevator door control device - Google Patents

Description

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

BACKGROUND ART Conventionally, as a safety measure for elevators, a device has been provided that detects when an elevator door cannot be opened due to some reason such as dirt clogging at the threshold, and turns the door over to close the door.

However, when the door is fully closed, the car can run, so if a call from another floor is registered, the car will answer that call and run, so even if there are passengers who want to get off on that floor, they will not be able to get off the car. You will not be able to do so. In addition, for the safety of elevator doors, the sensitivity of the detection device is high, and even the slightest amount of dirt is detected and the door is turned over.

Once the vehicle is reversed, even if the cause of the door not opening is removed and the door can be opened again, the vehicle will continue to run in response to Ikegina's call after it is fully closed. This invention solves the above-mentioned drawbacks, and provides an elevator door control device that allows passengers to get off at the desired floor even if it is detected that the door does not open and the door is reversed and closed. purpose.

An embodiment of the present invention will be described below with reference to FIG.

In the figure, (10) and (1) are DC power supplies, 1 is a door opening/closing command relay, la and lb are their normally open contacts, lc is also a normally closed contact, 2 is a door opening failure detection relay, 2a, 2b is its normally open contact, 8 is a time-return type time relay that operates immediately when it is energized and returns after a certain period of time when it is deenergized, 3a is its normally closed contact, and 4 is an electromagnetic contactor for closing the door. 4a is the normally closed contact, 4b and 4c are the normally open contacts, 5 is the electromagnetic contactor for opening the door, 5a and 5b are the normally closed contacts, 5c to 5e are the normally open contacts, and 6 is the door opening/closing contact. An electric motor; 7 is a door-opening detection switch that opens when a door that is about to close becomes unable to close; 8 is a door-opening detection switch that closes when a door that is about to open becomes unable to open; 9a, 9b; 1 is a running relay contact that closes while the cage is running; 1 is a lock detection relay contact that opens when the door is fully closed and locked; 11 is a fully closed detection switch that opens when the door is fully closed; 12 is a fully closed detection switch that opens when the door is fully closed; Fully open detection switches 13 and 14, which open when fully opened, are resistors. Note that the time limit of the time limit relay 3 is set longer than the opening/closing time of the door. Next, the operation of this embodiment will be explained.

While the car is running, the traveling relay contact 9a is closed, and the door opening/closing command relay 1 is energized by the (10)-ga-la-1-(1) circuit.

Furthermore, since the traveling relay contact 9b is also closed, the time relay 3 is energized and the contact 3a is open. When the car stops, travel relay contacts 9a and 9b are opened, door opening/closing command relay 1 is deenergized, contacts la and lb are opened, and contact lc is closed to issue a door opening command.

The door opening electromagnetic contactor 5 is energized by the circuit (10)-12-4a-lc-5-(1), the contact 5c is closed, and the time relay 3 is held. In addition, contacts 5d and 5e are also closed,
The door opening/closing motor 6 is driven by the circuit (10)-5d-13-6-5e-(1), and the door begins to open. When the door is fully opened, the fully open detection switch 12 is opened, the contactor 5 is deenergized, the contacts 5d and 5e are opened, and the motor 6 is stopped.
Furthermore, since the contact 5c is also opened, the time relay 3 starts counting the time limit. After a certain period of time has elapsed, the time relay 3 returns and the contact 3a closes. Since the contact 5b is open, the door opening/closing command lj is energized by the circuit (10)17-5b-3a-11 (1), and the contact la
, lb are closed, contact lc is opened, and a door closing command is issued. (10) The circuit of -11-5a-lb-4-(1) energizes the door closing electromagnetic contactor 4, and the contacts 4b, 4c
is closed. (10) 14, b-14-6-4c-(1)
The electric motor 6 is driven by this circuit, and the door begins to close. When the door is fully closed, the fully closed detection switch 11 is opened, the contactor 4 is deenergized, the contacts 4b and 4c are opened, and the motor 6 is opened.
stops. When the car next runs to respond to a call, the running relay 9a is closed and the door opening/closing command 1' relay 1 is held. The above is normal operation. Next, suppose that when the car is stopped, the door opening/closing command relay 1 is deenergized, a door opening command is issued, and the door is opening, the door does not fully open due to some reason such as clogging with garbage. Due to this failure, the door-openability detection switch 8 is closed, the door-openability detection relay 2 is energized, and is self-held by closing the contact 2b.
In addition, the contact 2a is also opened, and the door opening/closing command relay 1 is energized by the circuit of (10) 17-2a-11 (1), the contact lc is opened, and the door closing electromagnetic contactor 5 is turned off. contact 5
c is opened and the time relay 3 starts counting the time limit. At the same time, the contact lb is closed, the door-closing electromagnetic contactor 4 is energized, and the door is reversed and closed. When the door is fully closed, the fully closed detection switch 11 is opened and the contactor 4 is deenergized. At this time, the time limit relay 3 has not yet returned to normal operation, and the elevator activation command will not be issued until the time limit relay 3 returns to normal operation. Therefore, even if the door is fully closed, the car will not depart. In addition, when the door is locked, lock detection relay contact 1 is opened, door-unopenable detection relay 2 is deenergized, and contact 2a
is open. Now, the door opening/closing command relay 1 is deenergized,
The contact lc is closed, the door electromagnetic contactor 5 is energized, and the door begins to open again. Furthermore, the time relay 3 continues to be energized due to the closing of the contact 5c. In this way, even if the door that is opening is reversed and closed for some reason, the door will be opened again after the door is closed, so passengers in the car will not be able to get off at the floor they want to get off on. There will be no hindrance.

FIG. 2 shows another embodiment of the invention. In the figure, 2c is the normally open contact of the door opening failure detection relay 2, 9c is the travel relay contact that opens when the car is running, 16 is the door opening failure detection holding relay, 16a to 16c are the normally open contacts, and 17 is inside the car. A relay contact for detecting passengers in the car that opens when there is a passenger in the car and closes when there are no passengers in the car. There are various methods such as those that detect the passage of passengers using a photoelectric calendar, etc., but the details are omitted here.

When it is detected that the door cannot be opened, the door-opening failure detection relay 2 is energized to reversely close the door, as in the case of FIG. 1.

When the door opening failure detection relay 2 is energized, the contact 2c is closed, and the door opening failure detection holding relay 16 is energized by the circuit (1) 12c-9c-I6-(1), and the contact 16a is closed. It maintains itself by closing. If there is a passenger in the car, the in-car passenger detection relay contact 17 is open. When the door is fully closed and the door-opening failure detection relay 2 is deenergized and the contact 2a is opened, the door opening/closing command relay 1 is deenergized and the door starts to open again. Further, since the contact 16c is closed and a part of the resistor 13 is short-circuited, the torque of the electric motor 6 increases when the door is opened. As a result, when the door is opened again, the door-locking force is increased, making it easier to eliminate the cause of the inability to open the door. Next, if there are no passengers in the car, contact 17 is closed, so even if the door is fully closed, the door opening/closing relay is activated by the circuit (10)-7-16b-17-(1). The car is held and does not open again, and the car leaves to answer the next call.

In this embodiment, it is determined whether or not a door that has been fully closed after detecting that it cannot be opened is to be opened again based on the presence or absence of a passenger in the car, thereby preventing unnecessary opening and closing of the door. However, other means, such as The determination may be made based on whether a call has been registered on the floor where the vehicle stopped.

Further, if the door opening/closing force is increased not only when the door is opened again after the door cannot be opened, but also when the door is closed again after the door cannot be closed, the cause of the door becoming impossible to close can be easily eliminated. As explained above, in this invention, when it is detected that the door that is opening becomes unable to be opened, the door is reversed and opened, and if there is a passenger in the car, the car can run even if the door is fully closed. Since the door is reopened without opening the elevator, passengers can get off at the floor they want to get off on, and the door is only reopened when there are passengers in the car, which prevents unnecessary door opening and closing operations and reduces the operating efficiency of the elevator. can be reduced.

Further, since the door opening force is increased when opening the door again after detecting that the door cannot be opened, it is possible to easily eliminate the cause of the door not being able to be opened.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of an elevator door control device according to the invention, and FIG. 2 is a circuit diagram showing another embodiment of the invention. 1...Door opening/closing command relay, 2...Door opening failure detection relay, 3...Time-limited return type time-limited relay, 4
...P magnetic contactor for closing, 5...Magnetic contactor for opening door, 6...Electric motor for opening and closing door, 8...
・Door opening failure detection switch, 9a, 9b...Travel relay contact, 10...Lock detection relay contact, 1
1... Fully closed detection switch, 12... Fully open detection switch. Note that the same parts in the figures are indicated by the same reference numerals. Zujizu N ship

Claims (1)

[Scope of Claims] 1. A passenger detection device for detecting the presence of a passenger in a car, in which the door is reversed and closed when it is detected that the door that is about to open becomes unable to open; An elevator comprising a re-door opening circuit which does not cause the car to run even after the door is fully closed and reopens the door when the door is reversely closed and the passenger detection device is operating. Door control device. 2 When it is detected that the door that is opening is no longer able to be opened, the door is reversed and closed, and when the door is reversed and closed, the car will not run even after the door is fully closed. A control device for an elevator door, comprising: a re-opening circuit for re-opening the door without causing the door to open; and a device for increasing the door-opening force when the door is re-opened by the re-opening circuit.