JPH0357022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an elevator door device, and particularly to an improvement in the door structure.

[Background of the invention]

The structure of a conventional door device will be explained with reference to FIG. 1, taking as an example a landing door device with two doors that open vertically.

This landing door device is composed of a first door 1 and a second door 2. The first door 1 has a weight 3 on the other end.
The first door is suspended by two chains 4a connected to each other via sprockets 5a and 6, and a locking device 7 is provided at the closed end to prevent the first door from opening due to external force. The second door 2 has sprockets 8a and 8b fixed thereto, and one end is attached to the column 9.
It is suspended by a chain 4b whose other end is connected to the weight 3 via 5b. Then, the locking device 7 is released by an electrical command by a driving sprocket 10 directly connected to a driving machine (not shown), and the first door 1 and the second door 2 are opened and closed in the upward and downward directions. At this time, due to the above-mentioned structure, the first door opens and closes at twice the speed of the second door 2, so the time required to open and close the first door 1 and the second door 2 is the same. .

Such top/bottom opening door devices are mainly used in large elevators, for example, for transporting people or cargo or automobiles, but they have the following problems that need to be improved: It was hot.

That is, since the first door 1 is locked by the locking device at the closed end, it is impossible to open it with external force, but as mentioned above, the second door 2 is suspended by the chain 4b, so it cannot be opened. , it becomes possible to lift this and open the door. Many passengers are interested in the structure of elevators, and unscrupulous people may open the second door from the landing side and peer into the elevator tower. If an elevator car approaches you, you may collide with it, resulting in serious personal injury.

Even if a door device is installed in a car, for example, if a passenger who becomes trapped inside the car due to an electrical system failure tries to escape from the car, the passenger may fall into the tower or If the elevator suddenly starts moving for some reason, there is a risk of personal injury such as collision with tower equipment.

Regarding such problems, the following door devices have been proposed in the past.

FIG. 2 is an enlarged view of a door portion showing an embodiment of this proposal, and FIG. 3 is an enlarged view of a door guide device portion of a top/bottom opening door device.

That is, by providing the engaging piece 12 at the lower end of the second door 2 and the engaging piece 13 at the upper end of the first door 1, when the door is closed, external force such as mischief can cause the second door to close. Only 2 prevents the door from opening.

According to this proposal, the engagement position of the engagement element 12 and the engagement piece 13 is limited to only the side of the door as shown in the figure, due to the arrangement of the first door 1 and the second door 2.

In the case of a normal upper/lower door device, a guide 14 or a roller body (Fig. (not shown), and a rail 15 facing the engager 14, and a column 9 on the side of the door for attaching the rail 15.

Therefore, during normal opening and closing, the engager 12 and
The engagement piece 13 includes a guide 14 and a rail 15,
Furthermore, it is necessary to avoid interference with the column 9.
It is clear that the shape becomes more complex.

Furthermore, since it is necessary to provide an engaging member or an engaging piece on both the first door 1 and the second door 2, there is a drawback that a large number of parts are required for engagement when there are many doors.

[Purpose of the invention]

An object of the present invention is to provide a door device that can prevent personal accidents by protruding an engaging body only from the upper part of the first door.

[Summary of the invention]

In order to achieve this object, the present invention provides a structure in which a plurality of doors are provided at the entrances and exits of each floor in a building, the ends thereof are bent into a U-shape, and a reinforcing member is provided in the middle part. In an elevator door device installed in The reinforcing member of the door has a notch at a position through which the engaging body passes.

[Embodiments of the invention]

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

FIG. 4 is an enlarged view of the door portion showing the door structure according to the present invention.

The door according to the present invention has an engaging body 11 on the upper part of the first door 1.
is installed. The tip of the engaging body 11 is adapted to engage with the lower part of the second door 2 which has a reinforcing member 16 in the middle part, so that even if an attempt is made to lift the second door 2, it will not engage with the engaging body 11. Therefore, the second door 2 can only be lifted by a small gap G between the lower part thereof and the engaging body 11. Of course, when the door opens, this engaging body 1
As shown in the reinforcing member 16 provided for the second door 2, it is necessary to provide a notch 2a in the portion through which the door 1 passes. Note that the upper and lower ends of each of the first door 1 and the second door 2 are bent into a U-shape.

Furthermore, as shown in Fig. 5, the engaging body 11 is subjected to a force P in the direction of the arrow, but this assumes that multiple doors are lifted, and the lifting force is assumed to be over 100 kg. Subtracting the weight of 2, it is about 100 kg
It is necessary to have the strength to withstand the external force P.
Therefore, it is important to consider reinforcement of the upper part of the first door.

In the above description, a structure in which the engaging body 11 is provided at one location has been described in detail as an example, but in the case of a door having a large entrance/exit width, it is also possible to arrange a plurality of engaging bodies. Furthermore, the shape of the engaging body 11 is not limited to that shown in the drawings, but may be any shape that protrudes from the first door 1 toward the second door 2 and engages with the lower part of the second door 2. In addition, the reinforcing member 16
has a notch 2 that matches the shape of the engaging body 11.
It is sufficient to provide a.

〔Effect of the invention〕

According to the present invention, it becomes impossible to open the door of the top/bottom opening door device by external force, and it is possible to prevent personal accidents due to unsafe behavior of customers.

[Brief explanation of drawings]

Fig. 1 is a front view of the landing door device that opens from the top and bottom, seen from the back side, Fig. 2 is a perspective view of an example of a conventional door device, and Fig. 3 shows the door device that opens from the top and bottom. FIG. 4 is a perspective view of a door of an embodiment of the door device of the present invention, and FIG. 5 is a cross-sectional view of the door showing the door device of FIG. 4. 1... First door, 2... Second door, 2a... Notch, 11... Engaging body.

Claims (1)

[Claims] 1. In an elevator door device that is installed at the entrance/exit of each floor in a building and has multiple doors that are bent into a U-shape at the end and a reinforcing member is installed in the middle that can be opened and closed in the vertical direction, An engaging body is provided at the top of the door, and this engaging body is arranged so that it engages with the bottom of the door one door above, and the reinforcing member of the door located above this engaging body is located at the position through which the engaging body passes. An elevator door device characterized by having a notch provided therein.