JP7120946B2 - Blocking member for smoke-proof hanging wall - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closing member provided on a smokeproof hanging wall that forms a smokeproof compartment in a building to block a portion through which a folding door penetrates.

2. Description of the Related Art Conventionally, in office buildings, shopping malls, etc., a smokeproof hanging wall is provided on the ceiling surface in order to form a smokeproof section defined by the Building Standards Act.
By the way, in repair work, folding doors may be installed so as to penetrate the hanging wall for preventing smoke (see Patent Literatures 1 and 2).
Patent Literature 1 discloses a folding door that includes a rail attached to a ceiling surface and provided with a guide groove, and a plurality of panels suspended and supported by the rail and connected to each other. According to this folding door, the panels can be unfolded and folded by moving the connected panels along the guide grooves.

Patent Document 2 discloses a lower frame formed with a guide groove, an upper frame formed with a suspension rail, a plurality of mullions that move along the guide groove and the suspension rail, and a plurality of doors attached to these mullions. A folding door with a body is shown.

JP 2018-184787 A JP 2015-196976 A

With folding doors like the one above, the rails attached to the ceiling pass through the smoke barrier, so smoke leaks from the penetrating part in the event of a fire, and there is a risk that the door will not function as a smoke barrier. there were.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a smoke barrier that can prevent smoke from leaking even if a folding door penetrates it.

The closing member (for example, the closing member 1 described later) of the hanging smoke prevention wall according to claim 1 is provided in a hanging smoke prevention wall (for example, the hanging smoke prevention wall 10 described later) that forms a smoke prevention section in a building. It is a closing member that closes a portion through which a folding door (for example, a folding door 20 described later) penetrates, and the folding door is attached to a ceiling surface (for example, a ceiling surface 13 to be described later) to guide A rail (for example, a rail 22 to be described later) provided with a groove (for example, a guide groove 21 to be described later), and a plurality of panels (for example, a panel 23), and the rail passes through an opening (for example, an opening 12 described later) formed in the smokeproof hanging wall, and the portion of the opening above the lower end of the rail A closing plate (for example, a closing plate 30 described later) that closes the opening, and a swing door (for example, a swing door 31 described later) that is provided below the closing plate in the opening and can be opened and closed back and forth. Characterized by

According to this invention, when the panel of the folding door is folded, the panel does not pass through the smoke barrier, and the swing door is closed, so that in the event of a fire, smoke escapes from the blocking member of the smoke barrier. It can prevent leakage. When the panel is extended from this state, the panel penetrates the smokeproof hanging wall and is pushed by the panel to open the swing door, so that the panel can be smoothly extended.

The closing member for the smokeproof hanging wall according to claim 2 is provided with gravity hinges (for example, gravity hinges 34 to be described later) capable of opening and closing the swing door forward and backward at the upper and lower ends of the swing door. characterized by

According to this invention, when the swing door is opened back and forth from the closed state, the swing door spirals upward due to the gravity hinge, so that the weight of the swing door naturally applies force to the closed state. Therefore, when the panel is extended and the swing door is opened, when the panel is folded, the swing door is automatically returned to the closed state by the gravity hinge, so that the function of the smokeproof hanging wall can be immediately achieved.

The closing member for the smokeproof hanging wall according to claim 3 is characterized in that a smokeproof sheet (for example, a smokeproof sheet 35 to be described later) is provided on the upper edge of the swing door.

According to this invention, since the smokeproof sheet is provided on the edge of the upper side of the swing door, the gap between the swing door, the closing plate and the rail is reliably closed, and smoke escapes from the closing member of the smokeproof hanging wall in the event of a fire. Leakage can be prevented more reliably.

ADVANTAGE OF THE INVENTION According to this invention, the smoke-proof hanging wall which can prevent smoke from leaking even when a folding door penetrates can be provided.

FIG. 4 is a front view of a blocking member for a smoke barrier hanging wall according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2; 3 is a cross-sectional view taken along line CC of FIG. 2; FIG. It is a plane sectional view which shows operation|movement of the said closing member.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view of a closing member 1 of a smokeproof hanging wall 10 according to one embodiment of the present invention. 2 is a sectional view taken along line AA of FIG. 1, and FIGS. 3 and 4 are sectional views taken along line BB and CC of FIG.
A smoke barrier 10 forming a smoke barrier is provided in the building, and a folding door 20 is provided through the smoke barrier 10. - 特許庁A portion of the smokeproof hanging wall 10 through which the folding door 20 penetrates is closed with a closing member 1. - 特許庁

An in-ceiling partition wall 11 is provided in the ceiling, and the smokeproof hanging wall 10 extends downward from the lower end surface of the in-ceiling partition wall 11 .
The folding door 20 has a rail 22 attached to the ceiling surface 13 and provided with a guide groove 21, and a plurality of panels 23 (see FIG. 5) that are movably supported by hanging along the rail 22 and connected to each other. ) and
A rail base 14 is provided in the ceiling, and the rail 22 is attached to the rail base 14.例文帳に追加The rail 22 passes through a rectangular opening 12 formed in the smoke barrier 10 .

The closing member 1 includes a closing plate 30 that blocks a portion of the opening 12 of the smokeproof hanging wall 10 above the lower end of the rail 22, and a swing member that is provided below the closing plate 30 in the opening 12 and can be opened and closed back and forth. A door 31 is provided.
At both ends of the opening 12 of the smoke-proof hanging wall 10, a vertical base material 32 extending in the vertical direction is attached, and at the upper end of the smoke-proof hanging wall 10, that is, at the lower end of the partition wall 11 in the ceiling, a horizontal wall extending in the horizontal direction is attached. A base material 33 is attached.
The closing plate 30 is an angle member which is partially bent, and is welded and fixed to the horizontal base member 33 and the vertical base member 32 .

Gravity hinges 34 are provided at the upper and lower ends of the swing door 31 so that the swing door 31 can be opened and closed back and forth. When the swing door 31 is opened back and forth from the closed state, the gravity hinge 34 pushes the swing door 31 spirally upward, so that the swing door 31 naturally returns to the closed state by its own weight. .
A smoke-proof sheet 35 is provided on the upper edge of the swing door 31 to close the gap between the swing door 31 and the closing plate 30 and the rail 22 .

According to the closing member 1 described above, when the panel 23 of the folding door 20 is folded, as shown in FIGS. is closed by its own weight. When the panel 23 is unfolded from this state, as shown in FIG. 5, the panel 23 penetrates the smokeproof hanging wall 10 and is pushed by the panel 23 to open the swing door 31 .

According to this embodiment, there are the following effects.
(1) When the panel 23 of the folding door 20 is folded, the panel 23 does not penetrate the hanging wall 10 . Therefore, since the swing door 31 is closed, it is possible to prevent smoke from leaking from the closing member 1 of the smokeproof hanging wall 10 in case of fire. When the panel 23 is unfolded from this state, the panel 23 penetrates the smokeproof hanging wall 10 and is pushed by the panel 23 to open the swing door 31, so that the panel 23 can be unfolded smoothly.

(2) When the swing door 31 is opened back and forth from the closed state, the swing door 31 spirals up due to the gravity hinge 34, so that the weight of the swing door 31 naturally applies force to the closed state. Therefore, when the panel 23 is extended and the swing door 31 is opened, when the panel 23 is folded, the swing door 31 is naturally returned to the closed state by the gravity hinge 34, so that the function as the smokeproof hanging wall 10 is immediately performed. can fulfill

(3) Since the smokeproof sheet 35 is provided on the upper edge of the swing door 31, the gap between the swing door 31 and the closing plate 30 and the rail 22 is reliably closed, and the closing member of the smokeproof hanging wall 10 in case of fire. Leakage of smoke from 1 can be more reliably prevented.

It should be noted that the present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.

DESCRIPTION OF SYMBOLS 1... Blocking member of smokeproof hanging wall 10...Smokeproof hanging wall 11...In-ceiling partition wall 12...Opening 13...Ceiling surface 14...Rail base 20...Folding door 21...Guide groove 22...Rail 23...Panel 30...Blocking Board 31... Swing door 32... Vertical base material 33... Horizontal base material 34... Gravity hinge 35... Smokeproof sheet

Claims (3)

A closing member provided on a smokeproof hanging wall that forms a smokeproof section in a building and blocks a portion through which a folding door penetrates,
The folding door includes a rail attached to the ceiling surface and provided with a guide groove, and a plurality of panels that are suspended and supported movably along the rail and connected to each other,
the rail passes through an opening formed in the smoke barrier;
A smoke prevention device comprising: a closing plate that closes a portion of the opening above the lower end of the rail; and a swing door that is provided below the closing plate of the opening and can be opened and closed back and forth. Closing member of hanging wall. 2. A closing member for a smokeproof hanging wall according to claim 1, wherein gravity hinges for opening and closing said swing door are provided at upper and lower ends of said swing door. 3. The blocking member for a smokeproof hanging wall according to claim 1, wherein a smokeproof sheet is provided on an upper edge of the swing door.

Images