JPH04286589A - Elevator stop entrance device - Google Patents

Abstract

PURPOSE:To prevent the enlargement of the gap of a door contact part by exhausting the most part of gas, generated from cushioning material at heating time, from a vent hole provided at the fitting face of door contact cushioning material so as to prevent the expansion of the cushioning material. CONSTITUTION:The vent hole 16 of a door contact cushioning material 12 is provided in order to prevent the enlargement of the gap G of an elevator door caused by the expansion of the door contact material.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to an elevator landing entrance/exit device, and particularly, when a fire occurs on the landing side,
This invention relates to a safe entrance/exit device that does not create an opening at the door stop.

0002

[Prior Art] The conventional device is
As disclosed in the publication, there is a means for preventing the upper hanging wheel from coming off the door rail when the door is deformed, and a means for preventing the shoe at the lower end of the door from coming off from the guide groove (due to the shortening of the door due to deformation and water spray during fire extinguishing). Although a means for preventing the shoe from coming off from the guide groove is shown, as in the present invention, the gap in the door stop increases due to expansion due to gas generation from the door stop cushioning material due to heating during a fire, That is, no means for preventing the aperture from expanding is shown.

0003

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator landing entrance/exit device.

[0004] In the event that a fire breaks out in the building, the door on the landing side of the elevator will deform and create a large opening, allowing the fire and smoke to enter the hoistway.
The hoistway, which is a vertical space in the building, became a chimney, and there was a risk of the fire spreading to other areas.

[0005] An object of the present invention is to provide a landing entrance/exit device equipped with a more excellent elevator door.

[0006]

[Means for Solving the Problems] In order to achieve this object, in the present invention, a perforation portion is provided almost continuously in the folded portion of the door panel that contacts the door stop cushioning material of the door stop portion,
Even if the door and doorstop cushioning material is heated during a fire and the cushioning material expands due to the gas generated from the cushioning material, the gas generated and the expanded volume in the perforated portion will be pushed out to the doorstop portion of the cushioning material. To provide an elevator landing entrance/exit device which prevents the widening of the frontage between the doors at the door stop portion by preventing this.

[0007]

[Operation] If a fire breaks out in a building or other building on the landing side of the elevator landing entrance, the landing door will be exposed to high heat,
Since the door cushioning material provided in the door stop is made of rubber or the like, it generates a large amount of gas at the initial stage of heating. There are several ways to attach this doorstop cushioning material, but if the surface of the doorstop cushioning material is mostly covered by the door panel and the cushioning material mounting member, and the surface area exposed to the space is small, The gas generated from the cushioning material concentrates on the part exposed to the space, that is, the part where the cushioning material at the tip of the door stop and the cushioning material contact, and escapes, and the exposed area is If the volume ratio of the materials is small, the cushioning material will be pushed out, causing the door stop portion of the door to expand in the direction of the left and right door pockets. According to the present invention, in order to release the gas generated by the cushioning material into the hole and notch provided in the cushioning material mounting surface of the panel folding section, the cushioning material is pushed out,
Since the expansion can be minimized, the door stop part will not expand in the direction of the left and right door pockets.

[0008]

[Embodiment] An embodiment of the present invention will be explained below with reference to FIG.

FIG. 1 shows an elevator landing entrance/exit device showing an example of a two-door center-opening door system, and is a rear front view seen from the elevator furnace side, FIG. 2 is a longitudinal cross-sectional view of FIG. 3, and FIG. FIG. In the figure, 1 and 2 are the left and right doors of the landing, whose lower ends are guided by door shoes 3 that slide in the grooves of a sill 4 fixed to the building floor 21 of the landing with brackets 5, etc., and whose upper ends are guided by the wall of the landing. It is suspended by a hanger 6 that rolls on the door rail 8 of the header 9 fixed to the header 22 with a bracket 15, and opens and closes from side to side in the figure. The left and right doors 1 and 2 are shown in a closed state, and 7 is a door interlock hook fixed to the hanger 6 or the left and right doors 1 and 2, and is engaged with a lock fitting 10 fixed to the header 9 or door rail 8 to lock the door. ing. In this state, left and right door 1,
2 is locked both mechanically and electrically. Further, the left and right doors 1 and 2 are linked by a rope 11 to open and close. A door stop buffer member 12 is fixed to the end portions of the left and right doors 1 and 2 on the door stop side using door stop buffer member fixing fittings 13 and fixing screws 14. FIG. 3 shows details of the mounting portion of the door stop buffer member 12 according to the present invention, and FIG. 2 shows a longitudinal sectional view thereof. In the figure, escape holes 16 are provided almost continuously in the bent portions of the left and right doors 1 and 2 that serve as mounting surfaces for the door stop cushioning materials 12. When the left and right doors 1 and 2 are heated due to a fire occurring near the landing entrance, the heat is conducted to the door stop cushioning material 12 fixed to the left and right doors 1 and 2, and the door stop cushioning material generates heat due to the heat. Fuming. FIG. 4 shows a state in which a conventional doorstop cushioning material is heated, and since this cushioning material contains synthetic resin, rubber, etc., a large amount of gas is generated at the same time. When the open area is relatively small due to the mounting shape of the door stop cushioning material 12, gas dissipation concentrates on the open surface.
The cushioning material 12 expands locally and acts as a force F that opens the left and right doors 1 and 2 in the left-right direction (door opening direction), and the gap between the door interlock hook 7 and the lock fitting 10 causes the door stop to open. Increase the gap between the parts. This gap is between the door interlock hook 7 and the lock fitting 10.
The problem is particularly large at the lower end of the door, away from the lock part. FIG. 5 shows a cross section of the attachment part of the doorstop cushioning material according to the present invention when heated, and holes 16 for venting gas generated by the doorstop cushioning material are provided on the surfaces of the left and right doors 1 and 2 that are in contact with the doorstop cushioning material. It is. Most of the gas generated from the doorstop cushioning material escapes through this gas vent hole, so the doorstop cushioning material does not expand, so the force F that opens the left and right doors 1 and 2 in the left-right direction is Does not occur. FIG. 6 shows an example in which a gas vent hole 16 is provided in the doorstop cushioning material fixing fitting 13, and the same effect as in the case of FIG. 5 can be obtained.

0010

[Effects of the Invention] According to the present invention, even if the elevator door is heated due to a fire or the like and smoke and gas are generated from the doorstop cushioning material, the force in the left-right direction of the door (door opening direction) is suppressed by the doorstop cushioning material. Since this does not occur, the gap between the left and right doors of the elevator does not widen, and fire does not enter the elevator hoistway, making it possible to prevent the spread of fire in the elevator hoistway in the event of a building fire.

[Brief explanation of the drawing]

FIG. 1 is a rear front view of the elevator hall entrance/exit device of the present invention as seen from inside the hoistway.

FIG. 2 is a partial cross-sectional view of the doorstop in FIG. 1;

FIG. 3 is a partial front view of the doorstop in FIG. 1;

FIG. 4 is an explanatory diagram of the conventional doorstop cushioning material mounting portion when it is heated.

FIG. 5 is an explanatory diagram of the door stop cushioning material mounting portion according to the present invention during heating.

FIG. 6 is an explanatory diagram when heating the doorstop cushioning material attachment portion according to another embodiment.

[Explanation of symbols]

1...Left door, 2...Right door, 12...Door stop cushioning material, 13...
Door stop cushioning material fixing fitting, 16... Gas vent hole, G... Door stop gap.

Claims (1)

[Claims] [Claim 1] A side-opening door type elevator landing entrance/exit device in which a cushioning material is provided at the door stop part in order to reduce the sound of the door hitting, and the door panel part in contact with the cushioning material or the door panel part that is in contact with the cushioning material. A substantially continuous hole or notch is provided in the adjoining cushioning material fixing member, so that even if gas is generated and expands from the cushioning material due to the heat effect during a fire, the volume expanded in the hole or the notch is and an elevator hall entrance/exit device characterized by allowing the generated gas to escape.