JPS5945599B2 - automatic door control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for controlling the opening and closing of automatic doors, particularly doors used in elevators.

Conventionally, this type of control device operates in a drive force transmission section between the drive source and the door so as to normally operate the door without hindering the opening and closing of the door.
When a force greater than the opening/closing force of the door is generated in this driving force transmission part, such as when the door collides with a foreign object during opening/closing operation, it is deformed, and when the force greater than the opening/closing force is released, it is restored to its original state. A device has been proposed that includes an elastic body and is activated by the deformation of this detection device to control the door to stop or stop and move backward.

Such a device generally has a mechanism that detects a driving force of a certain value or more regardless of the position of the door during the opening/closing operation, and has the advantage of having a simple structure and being inexpensive to manufacture.

However, when starting and decelerating the door, the inertial force of the door acts, so the detected value must be set larger than the inertial force.

For this reason, small changes in driving force cannot be detected,
The function as a safety device was insufficient.

This invention solves the above-mentioned drawbacks, and aims to provide an automatic door control device that can detect an abnormality with high sensitivity in the main part of the opening/closing process when an abnormality occurs in the opening/closing operation of the door. It is something.

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

In the figure, reference numeral 1 denotes a door that opens and closes an entrance/exit 2, whose upper end is suspended by a banger 3, and is guided on a rail 5 attached to a support 4 appropriately fixed to the heel of the elevator (not shown).

Further, a guide piece 6 is fixed to the lower end of the door 1, and a groove T of a guide 7 is fixed to the elevator car floor (not shown) as appropriate.
It is slid and guided inside a.

8 is a drive motor fixed to the support member 4, 9 is a reduction pulley pivotally connected to the support member 4, 10 is a belt for transmitting driving force,
11 has one end fixed to the reduction pulley 9, and the other end fixed to the connecting arm 1.
2 is a drive arm connected to the door 1; 13 is a shaft 1 fixed to the door 1;
4, and its upper end is pivotally connected to the connecting arm 12.

Further, the lower end is provided with a recess 13a, and this recess 13a includes
A roller of a pressing device 15 fixed to the door 1 is pressed.

Reference numeral 1617 is a stopper that limits the rotation of the lever 13 within a predetermined range, and 18 and 19 are switches that are placed on both sides of the lever 13 and have actuating parts located opposite them. is installed on.

18a and 19a are normally open contacts of the abnormality detection devices 18 and 19, respectively, and 20.21 is a position detection device consisting of a switch attached to the support member 4 and arranged corresponding to each end of the opening/closing stroke of the door 1, 20a and 21a are these normally open contacts, respectively; 22 is a cam that is attached to the hanger 3 and presses the position detection device 20, 21 when the door 1 is in the opening/closing operation between just before the end of the operation process and between the end; +
is a power supply, 23 is a normally open contact of the opening/closing command device (not shown) for the door 1, 24 is a control device for the drive motor 8, 25 is an abnormality detection relay, 25a is a normally closed contact of this, and 26 is from an electromagnetic relay 26a. 26b is a normally open contact of this insensitive device.

Now, if the opening/closing command device operates, the contact 23 is closed and the control device 24 is energized by the circuit (-)-)-23-25a-24-(→) and the drive motor 8 is operated.

As a result, the door 1 is opened and closed via the connecting arm 11 and the like.

At this time, the lever 13 is held at the neutral position shown in FIG. 1 by the pressing device 15.

When the door 1 is in the middle of the opening/closing stroke and abnormal running resistance acts on the door 1 during the closing operation, the lever 13 rotates clockwise in FIG. Operate.

Similarly, if an abnormality occurs during the opening operation of the door 1, the lever 13 rotates counterclockwise at this time, so that the abnormality detection device 19 is activated.

As a result, either contact 18a or 19a is closed (-t-)-18a-25-(-) or (knee H-1
Abnormality detection relay 2 is activated by the circuit 9a-25-(-).
5 is energized and the contact 25a is opened.

Therefore, the controller 24 is deenergized.9. and door 1
stops.

However, the lever 13 rotates and the abnormality detection device 19°20
If the position of the door 1 when one of them operates is just before the end of the opening/closing process, one of the position detection devices 20 and 21 will operate and either of the contacts 20a or 21a will be closed. -) 20 a - 26 a - (→ circuit energizes the insensitive device 26 and closes the contact 26b.

Therefore, the control device 24 is energized by the circuit . . . -23-26b-24-+).

Therefore, the door 1 can be opened and closed normally. In this way, even if the abnormality detection devices 19 and 20 operate due to the inertial force of the door 1 when the door 1 is activated or decelerated, that is, when the door 1 is in operation just before the end of the opening/closing stroke, It is canceled by the insensitivity device 26.

Therefore, even if the sensitivity of the abnormality detection device 1920 is increased, that is, even if the pressing force of the pressing device 15 that holds the lever 13 in the neutral position is weakened, the door 1 can be opened and closed normally under normal conditions.

Therefore, when the door 1 collides with a person passing through the doorway 2, the abnormality detection device 1920 operates with high sensitivity.
It is possible to improve safety when controlling the door 1 in an abnormal situation.

As explained above, the present invention provides an abnormality detection device that operates when a resistance higher than the normal opening/closing resistance occurs during the opening/closing operation of the door, and controls the door drive device in an abnormal state by the operation of the abnormality detection device. In addition, an electric circuit is provided to cancel the operation of the abnormality detection device when the door is operating just before the end of the opening/closing process, that is, when the door is started or decelerated and the inertial force of the door acts.

This increases the sensitivity of the abnormality detection device in the main part of the door opening/closing operation, making it possible to perform abnormality control even for abnormalities in the door opening/closing operation such as slight changes in driving force, thereby improving safety. This realizes a highly sophisticated automatic door control device.

[Brief explanation of the drawing]

FIG. 1 is a front view of a knee beta door device showing one embodiment of an automatic door control device according to the present invention, and FIG. 2 is an electrical circuit diagram of the main part of FIG. 1. 1... Door, 15... Pressing device, 18
, 19... Abnormality detection device, 20.21...
...Position detection device, 24...Control device, 25.
...Anomaly detection relay, 26...Insensitive device. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1 A door that is opened and closed by a drive device, and an abnormality detection device that is installed at a suitable location on the drive device and operates when a resistance higher than normal opening and closing resistance is generated during the opening and closing operation of the door, and this abnormality detection device The drive device is controlled in case of an abnormality when the door is operated, and the door is operated when the door is in the opening/closing operation and is immediately before the end of the operation process, and the position detection device is operated during the activation of the position detection device. An automatic door comprising an insensitive device for canceling the operation of the abnormality detection device, and an electric circuit for blocking the abnormality control when the door is located immediately before the terminal end via the insensitive device. Control device.