JPS5917718B2 - Elevator door device - Google Patents

Description

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

First, a conventional door device will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is a car, 2 is a sliding car door, 3 is an engagement body provided on this, 4 is l, 5 is a landing entrance, and 6
is a landing door consisting of a sliding door, 7 is an engaging element provided thereon, and 8 is an auxiliary door closing device (for daytime auxiliary closing), which is a pulley pivotally attached to the upper edge of the landing entrance 5. , a rope wrapped around this and held at one end by the door 6 of the landing, and a weight suspended from the other end of this rope.

That is, when the car 1 faces the landing 4 t7, the engaging body 3
There is a gap between the engagement element 7 and the engagement element 7, and the two correspond to each other in a non-engaged state.

When the car door 2 is opened by an opening/closing device (not shown), the engaging body 3 is opened by a predetermined door opening operation.
are widened and held by the engaging elements 7 to engage with each other.

Then, the car and landing doors 2.6 are opened together.

Also, when closing the door, the engaging body 3 is placed at the position just before the car door 2 is fully closed.
Since the width becomes narrow, the engagement with the engaging element 7 is released.

The car door 2 is then driven to the fully closed position by the opening/closing device, and the landing door 6 is driven to the fully closed position by the auxiliary door closing 3.

However, when the landing 4 is installed facing outdoors, the landing is affected by the wind pressure acting on the door 6 of the landing during strong winds, and by the rising air generated in the hoistway in the case of an elevator with a long ascending/descending stroke. When the door 6 is attracted and running resistance increases, the driving force for the auxiliary door closing 8 may become insufficient.

At this time, the door 6 of the landing was not fully closed, so there was a problem that the operation of the car was blocked and the elevator became unusable.

Note that the elevator is configured so that it cannot operate unless the door 6 of the landing is fully closed and locked.

Also, if the driving force of the auxiliary door closing 8 is unnecessarily strengthened,
The door cannot be opened and closed smoothly at all times,
There may also be a danger due to increased door closing force.

The present invention aims to eliminate the above-mentioned drawbacks and provides an elevator door device in which the door of the landing is driven to close when necessary at a position just before fully closing.

An example of this invention will be explained below with reference to FIGS. 3 and 4.

In the figure, the same reference numerals as those in Figures 1 and 2 indicate the same parts, 9 is an operation command device consisting of a wind pressure detection device that operates when wind pressure exceeding a predetermined value acts on the door 6 of the landing, and 10 is a landing command device. A position detection switch is attached to the upper edge of the entrance/exit door 5 and is pressed by a cam 11 provided at the position just before the landing door 6 is fully closed. 13 is a drive device consisting of an electromagnet that attracts the attracted object to the fully closed position of the landing door 6, and is attached to the upper edge of the landing entrance 5.

14 is a normally open contact of a door locking device that operates when the landing door 6 is fully closed and locked; 15 is an AAND gate; 16
is a storage device that stores this information and outputs an output when it is input to the S side, and is reset and the output disappears when it is input to the R side.

That is, since the operation command device 9 does not operate during normal times, for example, when there is no wind, the AND gate 15 and the storage device 16 do not output their respective outputs.

Therefore, the drive device 13 is not energized, and the landing door 6 is at the position just before fully closing, that is, after the engaging body 3 and the engaging element 7 are disengaged from each other, the landing door 6 is fully closed by the terminal door closing 8.

Now, if a wind pressure exceeding a predetermined value is acting on the door 6 of the landing, the operation command device 9 is activated.

Then, when the door 6 of the landing to be closed reaches a position just before being fully closed, the contact 10a of the position detection switch 10 is closed.

As a result, the AND gate 15 outputs an output, the memory device 16 also outputs an output, and the drive device 13 is energized.

Therefore, the landing door 6 is driven to the fully closed position against the wind pressure.

Then, when the door locking device contact 14 is closed, the storage device 1
6 is reset, the drive device 13 is deenergized.

In this way, it is possible to eliminate the problem of elevator operation that occurs when the landing door 6 is not fully closed due to increased running resistance due to wind pressure acting on the landing door 6 or the like.

Further, FIGS. 5 and 6 show other embodiments of the present invention, and in the figures, the same reference numerals as in FIGS. 1 to 4 indicate corresponding parts, and 1
2 is a roller pivotably mounted on the surface of the landing door 6 facing the car door 2; 13 is a roller disposed on the surface of the car door 2 facing the landing door 6, and is provided with a cam 13a for deenergizing the roller; It is a drive device consisting of an electromagnetic device that is held in the backward position at times and moved forward when it is energized.
The slope a is provided at a position facing the roller 12.

Reference numeral 17 is a normally open contact of a switch that detects that the car door 2 is fully closed, and reference numeral 9 is an operation command device consisting of a timer that operates when a predetermined time period has elapsed after energization.

Now, suppose that the landing door 6 to be closed is in the position just before fully closing, and has stopped due to running resistance due to wind pressure, etc., then contact 1
0a is closed, and since the car door 2 is driven to the fully closed position, the contact 17 is closed regardless of the state of the landing door 6.

As a result, the operation command device 9 is energized and starts operating after a predetermined period of time has elapsed.

Then, the AND gate 15 and the memory device 16 produce outputs, and the drive device 13 is energized.

Then, the roller 12 is pressed by the cam 13a, and the landing door 6 is driven to the fully closed position against running resistance.

The drive 13 is then deenergized in the same way as in the embodiments of FIGS. 3 and 4.

Therefore, although a detailed explanation will be omitted, it is clear that the same effect as in the actual cases shown in FIGS. 3 and 4 can be obtained in this actual case as well.

In addition, in this embodiment, the drive device 13 is connected to the car door 2.
Therefore, one drive device 13 can fully close all the doors of all other landings.

Therefore, equipment costs can be reduced.

Further, as another example, if the landing door 6 does not fully close even after the drive device 13 is energized, it is easy to configure the device so that the driving force of the drive device 13 is further increased as the time limit passes. be.

As explained above, the present invention provides a drive device that drives a landing door in the door closing direction at a position immediately before fully closed, and an operation command device that operates the drive device, and prevents the landing door from experiencing abnormal running resistance such as wind pressure. When this occurs, the door to the landing is fully closed against the running resistance.

As a result, elevator operation problems that occur when the landing door does not fully close due to abnormal running resistance such as wind pressure from the position immediately before fully closing can be avoided, and the landing door, which is out of alignment with the car door from just before fully closing, can be prevented. This can be prevented by using a simple drive device that drives it to the fully open position.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of an elevator showing an elevator door device, FIG. 2 is an elevation view on the landing side of FIG. 1, and FIG. 3 is a diagram showing an embodiment of an elevator door device according to the present invention. 2, FIG. 4 is an essential logic circuit diagram of FIG. 3, and FIG. 5 is a diagram equivalent to FIG. 1 showing another embodiment of the elevator door device according to the present invention. FIG. 6 is a diagram corresponding to FIG. 4 corresponding to FIG. 2... Car door, 3... Engagement body, 6... Landing door, 7... Engagement element, 9... Operation command device, 10...
Position detection switch, 10a... Contact, 11... Cam, 12... Attracted object, 13... Drive device, 14...
・Door locking device contact, 15...AND gate, 16...
·Storage device. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. The engaging body provided on the corner door and the engaging element provided on the landing door are in a disengaged state when the car and the landing door are fully closed, In an elevator door device having a device that becomes engaged by a predetermined opening operation, an operation command means detects that the landing door is not in a fully closed state and issues a signal; a position detecting means that detects that the hall door is fully closed and a drive means that operates based on the signal when both the operation command means and the position detecting means generate a signal to fully close the hall door; and a drive means that fully closes the hall door when the hall door is fully closed. An elevator door device comprising means for stopping the operation of the driving means. 2. The elevator door device according to item 1 above, characterized in that the operation command means comprises a wind pressure detection device that is energized when wind pressure exceeding a predetermined value acts on the door of the landing. 3. An elevator door device as set forth in item 1 above, characterized in that the operation command means comprises a timer that is energized when a predetermined time period elapses after the car door is fully closed. 4 The engaging body provided on the corner door and the retainer provided on the landing door are in a non-locking state when the car and landing door are fully closed, and become engaged by the prescribed opening operation of the door. In the elevator door device, the elevator door device includes an operation command means for detecting that the hall door is not fully closed and issuing a signal, and an operation command means for detecting that the hall door has reached a position immediately before fully closing. A position detecting means for emitting a signal, a means for fully closing a hall door by operating based on the signal when both the operation command means and the position detecting means emit a signal, and a driving means provided at any of the above doors, and a means for fully closing the hall door. An elevator door device comprising means for stopping the operation of the driving means when the door is fully closed. 5. The elevator door device as set forth in item 4 above, characterized in that the operation command means comprises a wind pressure detection device that is energized when wind pressure exceeding a predetermined value acts on the door of the landing. 6. An elevator door device as set forth in item 4 above, characterized in that the operation command means comprises a timer that is energized when a predetermined time period elapses after the car door is fully closed.