JPS5925827Y2 - Elevator door device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an elevator door device.

Some elevator door devices are equipped with a safety device that operates when excessive running resistance is applied to the sliding door during opening/closing operations, and when the safety device operates, the sliding door is reversed.

Additionally, safety devices have been proposed that operate when the door is opened and when the door is closed.

In such a door device, it is desirable from the viewpoint of safety that the running resistance value when the safety device operates is as small as possible within the range where the safety device is not operated compared to the resistance during normal running.

However, when the sliding door is reversed, a larger acceleration is applied than during normal driving, so the safety device may malfunction due to the reverse operation of the sliding door due to the operation of the safety device.

For this reason, there is a problem in that the sliding door repeatedly flips and flips again when the safety device is activated.

Furthermore, if a child or the like mischievously grabs the sliding door, the elevator will be turned over and turned over again, making the elevator inoperable and reducing transportation capacity.

This invention solves the above-mentioned drawbacks and aims to provide an elevator door device in which the sliding door does not repeatedly reverse and re-invert when the safety device is activated.

An embodiment of this invention will be described below with reference to figures.

In the figure, (+) and (-) are power supplies, 1 is a reset device consisting of a switch that is closed during the opening/closing operation of the sliding door (not shown), and is opened when the sliding door (not shown) is in the final position of the opening/closing stroke; 2;
3 is a door opening abnormality contact of the safety device, 3 is a door opening abnormality detection device that is made of an electromagnetic relay and operates when excessive running resistance is applied to the sliding door during the door opening operation, 3a and 3b are normally open contacts, and 3c 5 is the first contact of the blocking device 4 consisting of the normally closed contact of the door open abnormality detection device 3; 5 is the door closed abnormality contact of the safety device; 6
is a door closing abnormality detection device consisting of an electromagnetic relay that operates when excessive running resistance acts on a sliding door that is closing.
A and 6b are normally open contacts, 6C is a second contact of the blocking device 4 which is a normally closed contact of the door open abnormality detection device 6, and 7 is a reversal control device.

If the sliding door is currently in the opening operation, the reset device 1 is closed.

In this state, if excessive running resistance acts on the sliding door, the door open abnormality contact 2 is closed (+) -1-2-
The door open abnormality detection device 3 is energized by the circuit of 6C-3-(-), and (+)-1-3l-3 is activated by closing the contact 3a.
The door open abnormality detection device 3 is self-maintained by the - (-) circuit.

At the same time, by closing contact 3b, (+) −3b7−
The reversing control device 7 is energized by the circuit ('-), and the sliding door is reversed.

At the same time, the first contact 3C is opened, so even if the door-close abnormality contact 5 closes due to a malfunction following the reversing operation of the sliding door, the door-close abnormality detection device 6 is not energized.

Therefore, the sliding door is reversed and closed without reversing, that is, re-opening.

When the sliding door reaches the fully closed position, that is, the end of the opening and closing stroke, the reset device 1 is opened and the door opening abnormality detection device 3 is activated.

Then, the first contact 3C is closed and the blocking device 4 is reset.

In addition, when excessive running resistance acts during the closing operation of the sliding door, the door closing abnormality contact 5 is closed (+) 1-5-30
The door closing abnormality detection device 6 is energized by the circuit -6-(-).

Therefore, although a detailed explanation will be omitted, the same effect as when the door is abnormally opened can be obtained even when the door is abnormally closed.

In this way, it is possible to prevent problems caused by the reversal acceleration when the safety device is activated and the sliding door is reversed, and the safety device is re-activated due to mischief by children, etc., causing the sliding door to repeatedly reverse and re-reverse. can do.

It should be noted that the reset device 1 in this embodiment can also be used as the end stop switch of the door device, so that the desired effect can be obtained with an inexpensive device.

As explained below, this device reverses the sliding door when either a door opening or closing abnormality occurs during the opening/closing operation of the sliding door, and detects the other abnormality until the sliding door reaches the end of the opening/closing process. This is what prevented it.

This prevents the sliding door from repeatedly reversing and re-inverting unnecessarily when the safety device is activated, thereby preventing a reduction in transportation capacity due to the elevator becoming inoperable.

[Brief explanation of the drawing]

The figure is a principal electrical circuit diagram showing an embodiment of an elevator door device according to this invention. 1... Reset device, 3... Door open abnormality detection device, 4... Blocking device, 6... Door closed abnormality detection device, 7... ...Reversal control device.

Claims (1)

[Scope of utility model registration request] A door opening abnormality detection device that operates when excessive running resistance is applied to the sliding door during the door opening operation, and a door closing abnormality detection device that operates when excessive running resistance acts on the sliding door during the door closing operation. The sliding door is configured to reverse operation when either of the two is forced or operated, and the sliding door is activated when the door open abnormality detecting device fails to operate, and prevents the door closing abnormality detecting device from operating incorrectly; a blocking device that operates when the door closing abnormality detection device operates to prevent the door opening abnormality detection device from operating; and a reset device that operates when the sliding door reaches the end of the opening/closing stroke to reset the blocking device. An elevator door device characterized by being equipped with a device.