JPH0688750B2 - Elevator door open / close device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for an elevator door, and more particularly to a door opening / closing device related to a safety door edge operation.

[Conventional technology]

The well-known safety door edge provided on the door of the elevator car is a very important safety device when getting on and off the elevator user. For example, when there is a passenger who gets into the car during the door closing operation of the elevator door, if the safety door edge provided at the tip of the car door touches the passenger, the door opening / closing device is opened to protect the passenger. On the other hand, a reverse door opening command is given. In response to this reversing door opening command, the door being closed is reversed and the door opening operation is performed, so passenger safety is ensured.

The structure of the safety door edge is, for example, Jitsuko Sho 52-
As is well known in the publications of 15573 and Jitsuko Sho 59-16384,
An edge is provided on the tip of the door (car door),
When the passenger touches this edge, the edge of the edge is pulled in, whereby the micro switch operates, and the operation of the micro switch is detected. As a result, the door is inverted from open to closed.

Elevator operation modes are roughly divided into full-automatic operation in which ordinary passengers can operate the elevator themselves to drive freely.
There is a driver's driving in which a dedicated driver drives.

The feature of the latter type of driving with a driver is that the door does not close automatically, but the driver operates the door closing button on the car operation panel to perform the door closing operation. In addition, the door opening service is provided for car calls or landing calls, and automatically opens when the elevator reaches the floor above. In such driving with a driver, the following door opening / closing operations are possible. For example, suppose an elevator makes a call to a hall, arrives on the same floor, and starts the door-opening operation.
When the driver recognizes that a mischievous call or an emergency call has occurred on another floor during the door opening operation and wants to quickly move to the door closing operation when the door does not fully open, press the door closing button on the car operation panel. By pushing the door, it is possible to reverse the door while it is open.

[Problems to be solved by the invention]

When such a door reversing door closing operation is performed, there are the following problems. When the door is suddenly stopped during the door opening operation and is moved to the door closing operation, the safety door edge operates due to the inertia due to the abrupt stop, and as a result, the microswitch also operates and passengers enter the safety door edge. Despite not touching
False detection of passenger touching the safety door edge. That is, when a door closing command is given during the door opening operation,
The door is closed / opened / closed repeatedly due to a malfunction of the safety door edge. If such a situation occurs, the driver and passengers will feel a great deal of distrust and discomfort.
It also significantly reduces the operating efficiency. In addition, there is a drawback in that in an emergency, even if you want to close the door early, it will be delayed.

The present invention has been made to solve the above problems. Even if the safety door edge malfunctions due to the door closing command given the door closing command during the door opening operation, the safety By temporarily disabling the operation of the door edge,
An object of the present invention is to obtain a door opening / closing device for an elevator door, which enables a smooth door closing operation.

[Means for solving problems]

An elevator door opening / closing device according to the present invention has a safety door edge on the door as a safety device for an elevator door, and when the safety door edge operates during door closing movement of the door, the door is closed. In an elevator door opening / closing device that reverses to open the door, a means for reversing the door from a door open to a door close before the door is fully opened, a detection detecting a reversal of the door from a door open to a door close Means and even if the opening / closing element of the safety door edge is operated for less than a predetermined time during the detection operation of the detecting means, this operation is invalidated and the reversal of the door from the door closed to the door open is prevented. If the safety door edge operates continuously for a time, the door opening permitting means that allows the door to be inverted from the door closed to the door opened by the operation of the safety door edge is provided.

[Action]

In the safety device for an elevator door according to the present invention, when the door is inverted to the door closed during the door opening operation of the elevator door, the safety door edge is caused by the inversion of the door from the door opening to the door closing. Even if operated for a short time, the door opening permitting means does not allow the reversal from the door closed to the door open. Therefore, the reversal from the door open to the door closed, the reversal from the door closed to the door open, and further the reversal. From the door open to the door closed again and again, the door open, door closed, door open, door closed ... Even if the door is closed, if a passenger or the like touches the safety door edge for a predetermined time, the door being closed is inverted to open, and the safety of the passenger or the like can be secured.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a circuit diagram. (+) And (-) are DC power supplies for elevator control, (1a) is a normally-open contact of a well-known door-open command relay (not shown), and (2a) and (2b) are well-known. Normally closed contact of a door closing command relay (not shown), (3) is a door closing operation detection time limit relay, and the normally open contact (2a) of the well-known door closing command relay (not shown) is energized. Works when is closed,
If this state continues for about 1 second, it will be activated. (3a) is a normally-open contact of the door-closing operation detection timed relay, and (4a) and (4b) are contacts of a well-known micro switch (not shown) of a well-known safety door edge (not shown). The element is normally open (first state), and is closed (second state) when the well-known safety door edge operates.
To do. (5a) is a normally-closed contact of a well-known door fully closed detection relay (not shown), which opens when the door is fully closed. (6a) and (6c) are the normally-open contacts of a well-known driver-equipped operation command relay (not shown), which are closed during driver-equipped operation. (6b) is a normally-closed contact of the known driver-operated operation command relay, (7) is a safety door edge predetermined timed operation detection relay during driver operation, which operates when the safety door edge operates,
When this operating state continues for about 0.3 seconds, it is activated. (7a)
Is a normally open contact of this safety door edge detection relay, and (8a) and (8b) are provided on a car door (not shown) and are known to be operated when the door is fully opened, which is well known. The normally closed contact closes the door at the fully open position. (9a) is a normally-closed contact of a well-known time delay for setting non-interference time (not shown), which opens when traveling starts, opens even when stopped, and closes when a predetermined time has elapsed after door opening. (10) is a door close detection relay from the fully open position, which is activated when the door close operation starts from the fully open position.

(10a) and (10b) are the normally open contacts of this door closing detection relay, (1
1) is a safety door edge operation detection timed relay that is activated immediately when the safety door edge operates in a mode other than the driver's operation mode.
Even if the edge is released, the operation continues for a predetermined time (about 0.2 seconds). (12) is a door close button switch provided on a well-known car operation panel (not shown), which closes when pressed. (13
A) is a normally open contact of a well-known running detection relay (not shown), which closes when the door is fully closed and starts running, and opens when the door zone on the service floor is entered and the brake is applied. (1
4) is a door control relay that issues a door closing command when energized (first state) and issues a door opening command when deenergized (second state). (A) is a means for reversing the door from open to closed before the door is fully opened. It includes a normally open contact (6c) of the driver-operated operation command relay, a safety door edge operation detection time relay (11). It is composed of a contact (11a), a door closing switch (12), a door control relay (14) and the like. (B) is a detection means for detecting the reversal of the door from opening to closing, which is a normally-open contact (2a) of the door-closing command relay, a door-closing operation detection timed relay (3).
Etc. (C) is a door opening permitting means, which is a normally open contact (3a) of a door closing operation timed relay (3), a switching element (4b) (contact of a micro switch of a safety door edge), a safety door edge. Normally open contact of predetermined timed operation detection relay (7), normally closed contact of door fully open detection switch (8b), normally open contact (10b) of door closed detection relay (10),
Safety door edge action detection timed relay (11),
Etc.

FIG. 2 is a diagram showing the relationship between the door closing speed and the time during the door reversing door closing operation. The door closing instruction is given during the door opening operation until the door closing instruction is given. It shows that it takes tx seconds from the start.

In Fig. 2, (DS) is the door opening / closing speed characteristic,
(1A) is because the door opening command relay is energized,
Door opening command given to a well-known door motor (not shown),
(2A) is a door closing command, t, which is given to the well-known door motor (not shown) when the door closing command relay is energized.
x is the time required until a door closing command is given during the door opening operation and the door closing operation starts.

Next, a description will be given of the operation in the case where the elevator services the up hall call from the third floor to the sixth floor by driving with a driver.

If the driver continues to press the door close button switch (12) on the car operation panel, (+)-(6c)-(12)-(11a)-(14)-
The (-) circuit is formed and the door control relay (14) is energized to start the door closing operation. The contact (6c) is closed because of the driver-operated mode. When the door is closed, a well-known brake (not shown) is released, and the elevator car starts running. When the vehicle starts traveling, a well-known traveling detection relay (not shown) is energized, and its normally open contact ((13a) is closed, and (+)-(1
3)-(14)-(-) circuit is formed and the energization of the door control relay (14) is continued. When the elevator arrives on the 6th floor and the brakes are applied, the contact (13
a) is opened, and accordingly the door control relay (14) is deenergized. As a result, the door opening command relay is energized, and the door enters the door opening operation. At this time, it is assumed that the driver judges that there is a mischief at the place where the door is opened, and pushes the door close button switch (12) during the door open operation. The operation mode is the operation mode with driver, the operation command relay contact with driver (6c) is closed, and (+)
A circuit of − (6c) − (12) − (14) − (−) is formed to activate the door control relay (14). As a result, the door opening command for the door motor is canceled and the door closing command is output. When the door closing command is output, the normally-open contact (2a) of the door closing command relay is closed, and the (+)-(2a)-(3)-(-) circuit is formed to detect the door closing operation timed relay. (3) operates. However, since this door-closing action detection timed relay (3) is a timed relay, it is not directly activated, but is activated when this state is continued for 1 second. On the other hand, if the door suddenly stops during the door opening operation, the safety door edge malfunctions momentarily (0.1 seconds) due to its inertia, and the safety door edge opening / closing element (4a) closes, and (+)- (4a)-(5)-
The circuits (6a)-(7)-(-) are formed, and the safety door edge during driver-operated operation is activated when the timed operation detection relay (7) operates but does not operate for a predetermined time or longer. The contact (7a) is open. On the other hand, even if the safety door edge operates, the door closing operation detection time limit relay contact (3a) is open, and the door is not in the fully open position but the door fully open detection switch contact (8b) is also open. Since the door closing motion is not detected from the fully open position, the contact (10b) is also open. Therefore, the safety door edge operation detection time relay (11) is not energized, and (+)-(6c)-
In the circuit of (12)-(11a)-(14)-(-), the door control relay (14) is continuously energized, and a smooth door closing operation is performed.

When the door closing motion detection state continues for 1 second or longer, the door closing motion detection timed relay (3) is energized and the normally open contact (3a) is closed, so that the safety door edge detection timed relay ( 11) works directly by the operation of the safety door edge detection switch. Also, when shifting from the fully open state to the door closing operation, (+)-(8a)-(2b)-(1a)-(1
The door close detection relay (10) is energized from 0)-(-) from the fully open position, and in this case as well, the safety door edge operation detection time limit relay (11) is the safety door edge detection open / close element (4b). ) Works and closes immediately. The reason for setting the time until the door closing operation detection timed relay (3) to be energized to 1 second is the time until the door opening operation is completed when moving from door opening to door closing. Within this time, the safety door It is not dangerous to add conditions to edge movement. Also, a malfunction occurs during this time. The reason for setting the energizing time of the safety door edge detection time limit relay (11) to 0.3 seconds is that the malfunction of the safety door edge is less than 0.1 seconds.

Although the relay circuit diagram is described in the above-mentioned embodiment, the same effect as that in the above-mentioned embodiment can be obtained even if the microcomputer is applied.
Further, the time limit for enabling the continuous operation of the safety door edge after the door closing operation is described as one second, but it goes without saying that it may change depending on the type of the door. Furthermore, the continuous operation time of the safety door edge was explained as 0.3 seconds, but it is not fixed.

〔The invention's effect〕

As described above, the present invention, as a safety device for an elevator door, has a safety door edge on the door, and when the safety door edge operates during the door closing operation of the door, it is reversed from the door closing. In an elevator door opening / closing device for opening the door, a means for reversing the door from a door open to a door close before the door is fully opened, a detecting means for detecting a reversal of the door from a door open to a door close, and Even if the opening / closing element of the safety door edge is operated for less than the predetermined time during the detection operation of the detection means, this operation is invalidated to prevent the door from being inverted from the closed state to the open state, and the operation is continued for the predetermined period. If the safety door edge operates, the safety door
Since the door opening permitting means that allows the door to be reversed from the door closing to the door opening due to the action of the edge is provided, it is possible to prevent the repeated door opening / closing operation due to the safety / door / edge malfunction due to the door inversion door closing. And the safety door
This has the effect of preventing malfunction without compromising the safety of the edge.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a response characteristic diagram showing a relationship between a door opening / closing operation and a time associated with a door opening / closing command. In the figure, (A) is a means for reversing the door from open to closed before it is fully opened, (B) is a detecting means, (C) is a door opening permitting means, and (3) is a door closing detection time limit. Relay, (4b)
Is an open / close element, (7) is a safety door edge predetermined timed operation detection relay, (12) is a door closing switch, and (14) is a door control relay. The same reference numerals in the drawings denote the same parts.

Claims (2)

[Claims] 1. A safety device for an elevator door, wherein the door has a safety door edge, and when the safety door edge operates during the door closing operation of the door, an opening / closing element is activated so that the door is closed. In an elevator door opening / closing device that reverses to open the door, a reversing means for reversing the door from a door open to a door closed before reaching the full opening, and a reversal of the door from a door open to a door close is detected. Even if the opening / closing element is operated for less than a predetermined time during the detection operation of the detection means and the detection means, this operation is invalidated to prevent the door from reversing from the door open to the door closed, and continuously for the predetermined time. An elevator door opening / closing device, comprising door opening permitting means for permitting the door to be turned over from being opened when the opening / closing element is activated. 2. A door control relay for urging the reversing means to a door closing switch and closing the door of the elevator by being urged by the operation of the door closing switch to deactivate the door of the elevator when the elevator car arrives at the calling floor and open the door. The detection means is a door-closing operation detection timed relay that operates when the bias of the door control relay continues for a predetermined time, and the door-opening allowance means operates the door-closing switch during the door-opening operation of the door. Has a time period longer than the operating time of the opening / closing element due to a sudden stop of the door during opening of the door, and keeps the door control relay energized even if the opening / closing element operates within a time period up to this time period. , A safety device that operates when the switching element maintains the operating state continuously until the time limit and deactivates the door control relay.
The elevator door opening / closing device according to claim 1, which is constituted by a door edge predetermined timed operation detection relay.