JPH05231045A - Entrance door structure - Google Patents

Abstract

PURPOSE:To increase the passing capacity of a door, and to greatly enhance the gas-tightness upon closing of the door. CONSTITUTION:Openings 20A, 20B are formed in a part surrounded by frames 16a, 22a and a floor 30. Openings 20C, 20D are formed in a part surrounded by frames 18a, 24a and the floor 30. An inclined part S1 having its width gradually widened in an inward direction P is formed at the inner periphery of each of the frames 16a, 22a and the floor 30 in the openings 20A, 20B. Further, an inclined part Sa having its width gradually widened in an outward direction Q is formed at the inner periphery of each of the frames 18a, 24a and the floor 30 defining the openings 20C, 20D. Inclined parts S2 laid along the inclined parts S1 are formed at the outer periphery of a frame 10a of an one-draw type door 10. The peripheral edge part of the door 10 in a closed condition is horizontally overlapped with the openings 20A to 20D through the intermediary of the inclined parts S1, S2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-pull type door structure provided at an entrance of a room in which air is sealed so that a pressure difference is generated between the inside and the outside of the room.

[0002]

2. Description of the Related Art In recent years, by making a roof a membrane roof,
Structures such as dome-like pillarless structures such as large space facilities can be constructed relatively easily. The membrane roof is inflated (inflated) by injecting air into the inside of the facility, and in this inflated state, a dome-shaped roof having a bulged central portion is formed. For this reason, in the large space facility using the membrane roof, the inside of the facility is always set higher than the outside air pressure, and it is necessary to reduce the discharge of air pressure from the entrance / exit as much as possible.

By the way, as a door structure of an entrance and exit for reducing the discharge of the air pressure inside the facility, for example, a revolving door used in a hotel or a department store is generally known.

That is, as shown in the schematic view of FIG. 3, a conventional revolving door 1 is provided with four partition panels 2, 2 ... Which are arranged in a cross shape at right angles to each other. Are rotatable about the rotary shafts 3 arranged at their radial center portions. Further, a pair of arcuate walls 4 and 4 that are slightly longer than the outer peripheral length between the two partition panels 2 and 4 are provided facing each other on the outer peripheral portion where the partition panels 2 and 2 are rotated. Passages 6 and 6a are formed between the opposite ends of the passage 4.

When entering from the outside 7 to the inside 8 of the building, as shown by the solid arrow X in the figure, the outside passage 6
Enter the revolving door 1 from the inside, and push the partition panel 2 while rotating it in the counterclockwise direction in the figure to proceed, and the inward passageway 6a
You can enter the building from. When going out of the building, the partition panel 2
Similarly, while rotating, the vehicle can proceed from the passage 6a to the outside passage 6.

[0006]

However, when the revolving door 1 is used as the door structure of the entrance / exit, one person usually enters in the area defined by the partition panels 2, 2 ... There is. Therefore, the partition panels 2, 2
Since the number of people allowed to pass through one revolution is four, the amount of traffic per unit time becomes low, and many people cannot pass through the entrance and exit at a time.

Therefore, it is possible to increase the traffic volume per unit time by using a single-pull automatic door that opens and closes along the rail. Since there is a gap in the door, much air pressure in the facility leaks to the outside from the peripheral edge of the door even when the door is closed. Therefore, in order to keep the air pressure in the facility constant, it is necessary to upsize the blower fan, which inevitably requires a lot of power.

In view of such conventional problems, the present invention aims to provide a door structure for an entrance / exit that can increase the traffic volume and can greatly improve the airtightness of the room in the closed state of the door. To aim.

[0009]

In order to achieve the above object, the present invention is a single-pull type door provided at the entrance and exit of a room in which air is sealed so as to generate a pressure difference between the inside and the outside. In the structure, an opening that is overlapped in the horizontal direction is formed in the peripheral portion of the door on the side where the pressure is low with respect to the door, and when the door is closed, the peripheral portion of the door has a high pressure at the peripheral portion of the opening. It is configured by abutting on the side.

Further, it is preferable that a plurality of the openings are provided in a series relationship with respect to the inside and outside directions of the chamber, and the door is arranged on the high pressure side of the periphery of each opening.

[0011]

In the revolving door of the present invention having the above structure,
In the closed state of the door, this door is horizontally overlapped with the opening on the low pressure side, so this door is kept pressed against the opening due to the pressure difference, and the airtightness of the peripheral edge of the door in the closed state is maintained. Can be significantly improved.

Further, a plurality of the opening portions are provided in a series relationship with the inside and outside directions of the chamber, and the doors are arranged on the high pressure side of the periphery of each opening portion, whereby one door is opened. Since the other doors can be closed when the door is opened, the pressure in the room can be maintained even when a person goes in and out.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 and 2 show an embodiment of a door structure for an entrance / exit according to the present invention. FIG. 1 is a cross-sectional plan view, and FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. In the description of the present embodiment, a door structure of a large space facility in which compressed air is enclosed inside by using a roof membrane is shown as an example.

That is, the door 10 used in the door structure of the present invention is of a single-pull type that moves along rails arranged on the floor and ceiling, and as shown in FIG. The four doors 10 are provided in series and in parallel with each other at an entrance / exit 14 having a rectangular plane cross-section provided through the outer wall 12.

The doorway 14 has an opening 13 in the outer wall 12.
Projecting walls 16, 16 and 18, 18 that form a pair from the peripheral portion of the building toward the inner side P and the outer side Q of the building,
A closing wall 2 which is provided with openings 20A, 20B, 20C, 20D of the door 10 at the tips of the projecting walls 16, 16 and 18, 18 and closes between the projecting side tips.
2 and 24 form a rectangular shape. The opening 20A
And 20B and 20C and 20D are arranged in parallel in the inner P and the outer Q, respectively, and the openings 20A, 20B and the opening 20 are arranged in parallel.
C and 20D are arranged in series relation with the inside and outside directions of the large space facility.

Further, ceilings 26 (see FIG. 2) are provided at the upper ends of the projecting walls 16 and 18 and the closing walls 22 and 24 so as to substantially follow the shape surrounded by these walls. Further, the door 10, the outer wall 12, and the protruding walls 16, 18
The closing walls 22 and 24 surround the respective peripheral portions of the frames 10a, 12a, 16a, 18a, 22.
a, 24a, and a glass plate 28 in each of these frames
It is configured by being fitted.

Therefore, said openings 20A and 20B
Is formed in a portion surrounded by the frames 16a and 22a, the ceiling 26 and the floor 30. Similarly, the openings 20C and 20D are formed in a portion surrounded by the frames 18a and 24a, the ceiling 26, and the floor 30.

Here, in this embodiment, the floor surface 30 is used.
From the inside P of the large space facility to the entrance / exit 14, and from the entrance / exit 14 to the outside Q, the openings 20A, 20B,
Steps 30a are added to the 20C and 20D portions to increase the height.
The frame 16 is provided in the openings 20A and 20B.
On the inner circumferences of the step portions 30a of the a, 22a, the ceiling 26 and the floor 30, an inclined portion S1 gradually widening toward the inward direction P is formed. Further, the frames 18a and 24a forming the openings 20C and 20D, the ceiling 26, and the inner periphery of the floor 30 form an inclined portion S1 that is gradually widened toward the outside Q.

On the other hand, on the outer periphery of the frame 10a of the door 10, an inclined portion S2 is formed along the inclined portion S1 of the openings 20A, 20B, 20C and 20D. The peripheral portions of the four doors 10, 10 ... Are respectively provided with the openings 20A, 20B, 2 through the inclined portions S1 and S2.
Polymerized horizontally at 0C and 20D. A seal rubber 32 is attached to the inclined portion S2 (or the inclined portion S1), and the gap between the inclined portion S1 and the inclined portion S2 is sealed via the seal rubber 32.

As shown in FIG. 2, a rail 34 is attached to the side surface of the ceiling 26 in the direction along the protruding walls 16 and 18, and a rail 36 is provided on the step portion 30a so as to face the rail 34. Install. On the other hand, the door 10
Two hangers 38 are respectively provided on the upper frame 10a of the upper frame 10a on the arrangement side of the rails 34.
Install along the length of. The roller 40 attached to the upper end of the hanger 38 is attached to the rail 34.
To fit. In addition, the frame 10 below the door 10
a has two rollers 4 on each side of the rail 36.
2 is attached, and these rollers 42 are fitted to the rail 36. The door 10 is supported by the rollers 40 and 42, and the door 10 is moved along the rails 34 and 36 by the rolling of the rollers 40 and 42.

The rails 34, 36 are cranked at their central portions as indicated by arrows X in FIG. 1 so that the door 10 is overlapped with the extension walls 16, 18 when the door 10 is opened. It will be tuned. Further, the door 10 has extension walls 16 and 18
As shown by the alternate long and two short dashes line in FIG. 1, the direction of superposition on the inside P is on the inside P side of the extension wall 16, and on the outside Q, the entrance / exit 14 of the extension wall 18 Be on the side.

By the way, the doors 10, 10 ... Are each configured as an automatic door, and a housing 44 accommodating a sensor and power is arranged on the back side of the ceiling 26 in each door 10, 10. Therefore, the door 10 is automatically opened when a passerby advances in front of the door 10 and is automatically closed after the passerby passes through it, and is normally kept in this closed state.

According to the door structure of the present embodiment having the above-described structure, the pulling type automatic doors 10 and 10 are respectively provided.
..., and when a passerby passes through the doors 10, 10, ..., Opens along the rails 34, 36, and the passersby open the openings 10, 20B, 20C, 2 of the doors 10, 10.
You can pass 0D freely. Further, since the doors 10, 10 ... Are held in an open state while a person is passing, many people can pass at one time, and a passing amount per unit time can be significantly increased. By the way, the peripheral portions of the doors 10, 10 ... Are provided with the respective openings 20A, 20B, 20 through the inclined portions S1 and S2.
Horizontally superposed on C and 20D. At this time, the inclined portions S1 and S2 are widened toward the inward P side in the openings 20A and 20B, and widened toward the entrance 14 side in the openings 20C and 20D. Here, the pressure is highest in the inside P in which the compressed air is enclosed, and then decreases in the order of the inlet / outlet 14 and the outside Q. Therefore, the doors 10, 10 ...
B, 20C, and 20D are arranged on the side of higher pressure, and the inclined portions S2 of the doors 10, 10, ... Have their openings 20A, 20B, 20C, and 20D superposed in the direction of lower pressure.

Therefore, when the doors 10, 10 ... Are closed, a pressure difference acts between both sides of the door 10. The pressing force due to this pressure difference acts on the inclined portions S1 and S2 in the direction of approaching each other. .. Therefore, the peripheral portions of the doors 10, 10 ... Are provided with the openings 20A, 20B, 20C, 2 respectively.
The airtightness is maintained by being pressed by 0D, and the doors 10, 10 ...
It is possible to significantly reduce leakage of compressed air from its peripheral portion when the is closed. Further, in this embodiment, the airtightness can be further improved by providing the seal rubber 32.

By the way, in this embodiment, the openings 20A are arranged in parallel in the inner P and the outer Q respectively.
And 20B and 20C and 20D are arranged in series with respect to the inward and outward directions of the large space facility, so that the openings 20A, 20 arranged on the inward P side.
Of B and the openings 20C and 20D arranged on the outer Q side, when one of the inner P side and the outer Q side is opened, the other can be closed. Inward P
It is possible to prevent the outside Q from directly communicating with each other. Therefore, it is possible to prevent a large amount of the compressed air sealed in the inner side P from being released. Therefore, it is possible to reduce the size of the blower fan that manufactures the compressed air and the size of the air conditioner, and to significantly reduce the power required for this. Also, the openings 20A, 20B and 2
As described above, 0C and 20D are arranged in series with the inner P and the outer Q, and the openings 20A and 20B are arranged in parallel with the inner P and the openings 20C and 20D are arranged outward. Since they are arranged in parallel at Q, for example, the openings 20A and 20C on one side are dedicated to entering the room, and the openings 2 on the other side are
By dedicating 0B and 20D to the room, tidy traffic can be performed.

[0026]

As described above, in the door structure of the doorway according to the first aspect of the present invention, the door is a single-pull type, and when the door is closed, the door has an opening portion on the side where the pressure is low. Since the doors can be held in a state of being pressed against the opening due to the pressure difference, the airtightness of the door peripheral portion in the closed state can be significantly improved. Therefore, it is possible to reduce the size of the device for generating the pressure in the room.

Further, in a second aspect of the present invention, a plurality of the openings are provided in a series relationship with the inside and outside directions of the chamber, and the door is provided on the high pressure side at the periphery of each opening. Since the doors are arranged, the other doors can be closed when one door is opened, so that it is possible to effectively maintain the pressure in the room when a person goes in and out. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an enlarged main part of line AA in FIG.

FIG. 3 is a schematic configuration diagram showing a conventional door structure.

[Explanation of symbols]

 10 Door 14 Doorway 20A, 20B, 20C, 20D Opening 26 Ceiling 30 Floor 34, 36 Rail P Inner Q Outer

Claims (2)

[Claims] 1. A single-pull type door structure provided at an entrance / exit of a room in which air is sealed so as to generate a pressure difference between the inside and the outside, the door having a lower pressure than the door. An opening / closing door structure, characterized in that an opening overlapping in the horizontal direction is formed in the peripheral edge of the door, and the door peripheral edge is abutted against the high pressure side of the opening peripheral in the closed state of the door. 2. A plurality of the openings are provided in series with each other in the inward and outward directions of the chamber, and the door is arranged on the side of the periphery of each opening having a high pressure. Door structure for the entrance and exit shown.