JPS63112389A - Smoke-proof device for elevator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a device for preventing smoke from entering through an elevator hall entrance.

[Conventional technology]

The landing door opens and closes the elevator landing entrance.

It is well known that sliding doors are generally used.

In order to open and close this landing door, a gap is required between the entrance frame and the landing door. Therefore, if a fire breaks out in the building, smoke may enter the hoistway through the gap and flow out to other floors.

In order to prevent such disasters, some buildings are required to prevent smoke from flowing out from the first landing entrance through the hoistway to other floors. However, the above-mentioned elevator landing door cannot meet the smoke-proof requirement t-drops, so a smoke-proof shell as shown in FIG. 6 is installed at the second landing.

Figure 6 is a cross-sectional view of a building showing a conventional elevator smoke prevention system.In Figure 2, (1) is the hoistway, and (2) is the hoistway (1).
(3) is the elevator landing, 14) is the landing entrance leading from the landing (3) to the hoistway (1), and (5) is the landing provided at the entrance (4). (61 is a landing door that is placed with a gap in the landing doorway frame (5) and opens and closes the doorway 14), (7) is a pillar erected around the landing (3), (8) is a This is a smoke-proof shutter that extends up and down along the pillar (7) and surrounds the landing (3).

Conventional elevator smoke prevention equipment is constructed as described above, and when necessary, the smoke-proof shutter (81) is used to shield the landing (3) and prevent smoke from entering the hoistway (1). )
This prevents it from leaking out.

[Problem that the invention seeks to solve]

In the conventional elevator smoke prevention system as described above, the second boarding hall (3) is surrounded by smoke prevention shutters (8), which increases the cost and also requires the installation of smoke prevention shutters (8). This also created constraints on the building structure.

There are problems such as interfering with the use of the landing space and spoiling the aesthetics.

This invention was made to solve the above problems, and eliminates the need for a smoke-proof shutter that was conventionally installed separately.
To provide a smoke prevention device for an elevator capable of providing smoke prevention function 2 with a simple configuration.

Means for Solving Problem c] The smoke prevention device for an elevator according to the present invention is such that the - side is attached to one of the landing entrance/exit frame and the landing door, and the other side is attached to the other side of the landing entrance/exit frame and the landing door with a gap between them. It is provided with opposing shields X made of flexible material.

[Effect]

In this invention, one side of the flexible shielding rod is attached to one side of the landing entrance/exit frame and the landing door, so if a pressure difference occurs between the landing side and the hoistway side due to a fire, the shielding wing will It deforms and the other side comes into close contact with the other side of the landing entrance/exit frame and the landing door.

〔Example〕

Figures 1 to 5 are diagrams showing one embodiment of the present invention.
The figure is a cross-sectional view of the entrance/exit portion of the hall, FIG. 2 is a longitudinal sectional view of the same, and FIG. 3 is an enlarged view of the part of FIG. 1.

Figure 4 is a W-IV cross-sectional view of Figure 2, and Figure 5 is the same (V
In the enlarged view, (t>, fa) to (6) are similar to the conventional device described above.

In the figure, (6) is the landing door, and its upper end is the landing entrance frame (5
) A roller moves on the door rail 0 fixed to [[3
It is suspended from 1C. F141 is a shielding board fixed to the side of the landing door (6), and F141 is a thin plate made of flexible material such as rubber or soft synthetic resin and has a T-shaped cross section and is fixed to the side of the landing door (6). With shielding wings placed along.

Shielding X (one side of 141 (14
The other side (14b) of the shield, which forms a horizontal T-shape, faces the side of the hall entrance/exit frame (5) with a gap in between. Similarly, U9 is at landing door 16.
It is a shielding wing installed on the top surface of 1, and the negative side is the landing door (
6), the other side faces the upper part of the hall entrance/exit frame (5) with a gap in between. The mark is placed at the landing entrance (4) and the groove (1)
a sill having six ridges and forming a part of the landing entrance/exit frame (5);
(In is a guide plate fixed to the bottom surface of the landing door (61) and sliding inside the landing door (61), (1 second is a shielding wing fixed between the guide pieces αn on the bottom surface of the landing door (61), Shielding wings (14
1, (almost the same as 19).

In the elevator smoke prevention system constructed as described above, a gap is always maintained between the other side (14k) of the shielding wing Q4) and the side of the hall entrance/exit frame (5).

In addition, the same goes for the R direction
A gap is maintained between the 6 ribs. therefore.

There is no problem in opening and closing the landing door (6).

If there is a pressure difference between the landing (3) and the hoistway (1) during a fire.

Smoke circulation occurs. Now, if a pressure difference occurs that causes smoke to flow in the direction of arrow A, the shielding wing α41 deforms as shown by chain line B, and the other side (14b) comes into close contact with the side of the hall entrance/exit frame (5). . When a pressure difference occurs that causes smoke to flow in the direction opposite to the arrow entry direction, it deforms in the opposite direction to the previous direction and the other side (+4b) becomes the hall entrance/exit frame (5).
Closely attached to the side of the In addition, the shield @US and αδ are also similar, and their other sides are in close contact with the upper part of the landing doorway frame (5) and the groove (t6a) of the sill (18).In this way, the area around the 9th landing door (6) The gap existing in the shielding wing (1
41,u! 9. α&Yoshi is closed, so the 1st platform (
3) and the hoistway (1) are prevented from flowing between each other.

Note that it is desirable that the shielding g(14,1) (length of the vertical stroke of the T-shape with a height of 081) be sufficiently large so that the required deformation occurs with a slight pressure difference.

In addition, in the embodiment, the shielding X (141, aS is
6), but this was installed in the hall entrance/exit frame (5).
) may be provided. That is, Shohei x (i4.
One side of the US may be fixed to the side and upper part of the landing entrance/exit frame (5), and the other side may be opposed to the landing door (6) with a gap in between.

Furthermore, J Example Te H Tatsu Hei X1) 41. t15), (
Although those shown are arranged on the side, top and bottom surfaces of the lf1 landing door (6), the smoke prevention effect of Kana 9 can be obtained even if it is provided on only one of the surfaces.

〔Effect of the invention〕

As explained above, in this invention, the entire shielding wing made of an available material is installed, the minus side is attached to one of the landing entrance/exit frame and the landing door, and the other side is attached to the other side of the landing entrance/exit frame and the landing door with a gap in between. When a pressure difference occurs between the landing side and the hoistway side, the shielding blade deforms and comes into close contact with the landing entrance/exit frame and the other side of the landing door, eliminating the need for smoke-proof shutters that were previously installed separately. It has the effect of providing a smoke prevention function with a simple configuration.

[Brief explanation of the drawing]

1 to 5 are diagrams showing an embodiment of the smoke prevention device for an elevator according to the present invention, in which FIG. 1 is a cross-sectional view of the entrance/exit portion of the hall, and FIG. 2 is the same (longitudinal sectional view). The figure is an enlarged view of the part shown in Fig. 1, and Fig. 4 is the IV- part of Fig. 2.
A sectional view taken along the line IV, and FIG. 5 is an enlarged view of the V section in FIG. FIG. 6 is a cross-sectional view of a building showing a conventional elevator smoke prevention device. In the figure, (1) is the hoistway, (3) is the landing, (4) (l- is the landing entrance/exit. (5) is the landing entrance/exit frame ptsl is the landing door, t141
is a shielding wing. (14 is one side of the shielding wing, (14b) is the other side of the shielding wing, us is the shielding wing, and ae is the landing entrance/exit frame (sill). Uψ is the shielding wing. Note that the same symbols in the two figures are the same parts. shows.

Claims (2)

[Claims] (1) A landing doorway frame provided at the landing doorway leading from the landing to the hoistway, a landing door arranged with a gap in the landing doorway frame and opening and closing the landing doorway frame, and a doorway door made of a flexible material. One side is installed along one of the landing entrance/exit frame and the landing door, and the other side faces the other of the landing entrance/exit frame and the landing door with a gap in between, and is deformed by the airflow generated due to the pressure difference between the landing side and the hoistway side. A smoke prevention device for an elevator, comprising a landing doorway frame and a shielding wing that closely contacts the other side of the landing door. (2) The elevator according to claim 1, wherein the shielding blade is formed to have a T-shaped cross section, the lower end of the vertical stroke of this T-shape is fixed to the landing door, and the horizontal stroke is opposed to the landing entrance/exit frame. Smoke control device.