JPH04298485A - Elevator boarding place door - Google Patents

Abstract

PURPOSE:To prevent apparatus or wiring of a cage from being broken down or being burnt due to a high temperature by having a simple structure in the case where a fire breaks out on the elevator boarding place side. CONSTITUTION:Heat shielding plates 8A and 8B are provided on back plates 3C of doors 3 among double sliding doors through heat insulating bodies 7, and under a condition that the vicinity C of door touching parts 5 is covered, and also under a condition that the doors 3 are fully closed, a narrow path 5b is formed between its opposing parts. Safety of an elevator against a fire can be heightened with a simple structure and at a low manufacturing cost.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a fireproof structure for an elevator landing door.

0002

[Prior Art] Figs. 4 to 7 show, for example,
This is a conventional elevator landing door shown in Publication No. 8685, etc. In the figure, 1 is an entrance/exit provided in the elevator landing 2, 3 is a double sliding door that opens and closes the entrance/exit 1, and two doors 3A are shown.
, 3B. 3a is the frame of door 3, 3
b is a top plate fixed to the frame 3a and facing the landing area 2;
c is a back plate fixed to the frame 3a and facing the hoistway 4 side;
3d is between the frame 3a and the top plate 3b and the frame 3
The heat insulating material inserted between a and the back plate 3c, and 3e are door stop rubber provided on the door stop part 5 of the front plate 3b of one door 3A. Note that the door 3 is opened and closed by a guide device and a door closing device (both not shown) provided at the entrance/exit 1. In addition, a gap g (approximately 2 cm) is provided in the door stop 5 of the door 3 to prevent injury even if a person's fingertips are caught, as shown in FIG.
is blocked by. Furthermore, when the two doors 3A and 3B are closed, a key-shaped bottleneck 5a is formed in the door stop 5 by the frames 3a of both doors.

Conventional elevator landing doors are constructed as described above, and when a fire breaks out inside the building facing the landing 2 side, the door prevents the high heat associated with the flames from entering the hoistway 4. It is blocked by 3.

0004

[Problems to be Solved by the Invention] Conventional elevator landing doors are constructed as described above to prevent disasters in the event of a fire. However, since a gap g is provided in the door stop 5, if a fire occurs on the landing 2 side, the door stop rubber 3
e melts, and then the high heat associated with the fire is transmitted from the landing 2 side to the hoistway 4 side through the gap g in the doorstop 5, and the area near the doorstop facing the hoistway 4 (Fig. 7
The temperature of part C) was rising. Furthermore, if the fire got even stronger, flames could sometimes directly erupt into the hoistway 4 from the doorstop 5a. If the car 6 faces this door 3, the equipment and wiring installed in the car 6 may be damaged or burnt out due to high heat, which may endanger the lives of the passengers inside the car 6. there were.

As a countermeasure to this problem, for example, as shown by the chain line in FIG. 7, a method can be considered to increase the thickness T of the door 3 and move the door stop facing the hoistway 4 away from the flame. However, this method has the problem of increasing the weight of the door 3, requiring a large-sized door closing device, and increasing manufacturing costs.

[0006] This invention has been made to solve these problems.In the event of a fire, the equipment and wiring of the car facing the landing door will not be damaged or burnt out due to high heat, and it has a simple structure and is inexpensive. The purpose of the present invention is to provide an elevator landing door that can improve fire resistance performance at a low manufacturing cost.

[0007]

[Means for Solving the Problems] The elevator landing door according to the present invention includes a double sliding door that opens and closes the entrance to the elevator landing and has a front plate facing the landing and a back plate facing the hoistway, and a double sliding door. is arranged so as to cover the entire length of both sliding door stops through a heat insulator on the back plate of both sides, and a bottleneck is formed in the opposing parts that are close to each other when both sliding doors are fully closed. A heat shield plate is provided.

[0008]

[Operation] In the elevator landing door configured as described above, the heat shield plate covers the vicinity of the door stop on the hoistway side, and when the door is fully closed, a bottleneck is formed in the opposite part of the heat shield plate. to prevent high heat during a fire.

[0009]

[Example] Example 1. 1 to 3 show one embodiment of the present invention. In the figure, 1 to 6
indicates the same or equivalent parts as those of the conventional device, and the explanation thereof will be omitted. In the figure, 7 is a heat insulator made of a heat insulating material such as glass fiber and fixed to both back plates 3C of the door 3;
A and 8B are heat shielding plates fixed to both back plates 3C through heat insulators 7 so as to protrude toward the hoistway 4 side, and have a U-shaped cross section as shown in FIG. It is arranged so as to cover the vicinity C of the doorstop over the entire length of the doorstop. Further, the heat shield plates 8A and 8B are arranged so as to face each other when the door 3 is fully closed, and to form a bottleneck 5b (shown in FIG. 1) in the opposing portion.

In the elevator landing door constructed as described above, even if a fire breaks out on the landing 2 side and the temperature in the vicinity C of the door stop on the hoistway 4 side rises, the heat shield plate 8A,
Since 8B covers the vicinity C of the door stop, the car 6 does not directly face the vicinity C of the door stop. Also,
The heat shielding plates 8A and 8B are fixed to the back plate 3C via the heat insulator 7, apart from the vicinity C of the doorstop, so even if the vicinity C of the doorstop becomes high temperature, the heat shielding plates 8A and 8B The temperature rise of 8B can be suppressed. Furthermore, even if flames erupt from the bottleneck 5a of the doorstop toward the hoistway 4 side, the bottleneck 5b formed at the opposing portions of the heat shielding plates 8A and 8B functions as an extension of the bottleneck 5a of the door 3, so that the flames can be ejected. does not spout into the hoistway 4.

Therefore, in the elevator landing door according to the present invention, even if a fire occurs on the landing 2 side, the car 6 facing the door 3 of the landing 2 will not be directly exposed to high heat.
The equipment and wiring of car 6 will not be damaged or burnt out. Further, this invention provides a back plate 3 of an elevator landing door.
Since it is only necessary to fix the heat shield plates 8A and 8B to C via the heat insulator 7, the structure is simple, the increase in weight is small, and the fire resistance performance can be improved at low manufacturing cost.

0012

[Effect of the invention] The elevator landing door according to this invention is
It has double sliding doors that open and close the entrance and exit of the landing, and a heat shield plate that is installed on the back plate of both sliding doors via a heat insulator and is arranged along the entire length of the door stop. covers the vicinity of the door stop on the hoistway side, and when the door is fully closed, a bottleneck is formed in the opposite part of the heat shield plate to prevent high heat, so that in the event of a fire, equipment on cars facing the landing door and The wiring is not damaged or burnt out due to high heat, and the simple structure and low manufacturing cost improve the safety of the elevator.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention, showing a situation at the time of a fire.

FIG. 2 is a front view showing Embodiment 1 of the present invention.

FIG. 3 is a sectional view showing Embodiment 1 of the present invention.

FIG. 4 is a perspective view showing an entrance/exit of a conventional elevator.

FIG. 5 is a front view of a conventional elevator entrance.

FIG. 6 shows a conventional elevator landing door, A- in FIG.
It is a sectional view taken along arrow A.

FIG. 7 is an enlarged sectional view of section B in FIG. 6, showing a landing door of a conventional elevator.

[Explanation of symbols]

1 Entrance/exit 2 Boarding area 3 doors 3C Back plate 4 Hoistway 5 Door stop section 7 Insulator 8A, 8B Heat shield plate

Claims (1)

[Claims] Claim 1: Double sliding doors that open and close entrances and exits of elevator landings and have a front plate facing the landing and a back plate facing the hoistway; Provided to protrude toward the roadside, and arranged so as to cover the vicinity of the doorstops over the entire length of the doorstops of both sliding doors, and a bottleneck is formed in the opposing parts that are close to each other when both the sliding doors are fully closed. An elevator landing door characterized by being equipped with a heat shielding plate.