JP2019173390A - Fireproof sash device, opening structure, and building - Google Patents

Abstract

A fireproof sash, an opening structure, and a building having a predetermined fireproof performance while having a simple configuration are provided.
A fireproof sash 1 comprising a glass plate 2 and a shoji 4 having a shoji frame 3 that holds the glass plate 2 and a sash frame 5 that surrounds and supports the shoji 4 is provided. At least one of the sash frames 5 is provided with deformable portions 3c, 3d, 5c, and 5d that can be deformed following the in-plane deformation due to thermal expansion of the glass plate 2.
[Selection] Figure 1

Description

  The present invention relates to a fireproof sash that is installed in a building opening and has a predetermined fireproof performance, and an opening structure and a building including the fireproof sash.

  Conventionally, a sash provided with, for example, a shoji having a shoji frame that holds a glass plate and a glass plate and a sash frame that surrounds and supports the shoji is installed in an opening such as a window provided on the outer peripheral wall of the building. Is done.

  Here, in the case of a normal non-fireproof sash, when a fire occurs, deformation such as torsion occurs between the shoji and the sash frame due to the thermal expansion of the shoji including the glass plate. There may be a gap between the shoji and the sash frame. When such a gap occurs, there is a problem that a fire flame penetrates the inside and outside of the building through the gap.

  In order to solve such a problem, there is known a fire sash having a predetermined fire prevention performance capable of blocking a flame when a fire occurs and preventing the spread of the fire. As fire protection sashes, in order to suppress the torsional deformation of the frame members due to thermal expansion during the occurrence of a fire, the strength of the glass plate is increased by increasing the thickness of the glass plate, or the reinforcing steel material inside the shoji frame and sash frame It is known that the strength of the frame is increased by arranging the frames. Thus, by increasing the strength of each member in the sash, it is possible to prevent a gap from being generated between the members and the penetration of the flame.

  In addition, in a resin fireproof sash, a refractory material and a die steel member are inserted and arranged in a hollow portion of a hollow sash frame (see Patent Document 1), and the hollow portion of the sash frame has thermosetting properties. A method of filling a particulate or powdery heat-resistant composition has been proposed (see Patent Document 2).

Japanese Patent Laid-Open No. 2005-9304 JP 2011-153519 A

  However, in the fireproof sash as described above, a reinforcing steel material is provided in the shoji frame or the sash frame, a refractory material and a die steel member are inserted in the sash frame, or a heat resistant composition is provided in the sash frame. It was a complicated structure that had to be filled with materials and the like, and it took time to manufacture.

  Therefore, an object of the present invention is to provide a fire sash, an opening structure, and a building having a predetermined fire prevention performance while having a simple configuration.

The present invention has been made to solve the above problems, and the fireproof sash of the present invention includes a glass plate and a shoji having a shoji frame for holding the glass plate,
A sash frame surrounding and supporting the periphery of the shoji, and a fire sash comprising:
At least one of the shoji frame and the sash frame is provided with a deformation allowing portion that can be deformed following the in-plane deformation due to thermal expansion of the glass plate.

In the fireproof sash of the present invention, the deformation allowing portion includes a shoji frame side wall adjacent to the cavity portion provided in the shoji frame, and a sash frame side wall adjacent to the cavity portion provided in the sash frame. And at least one of
It is preferable that the hollow portion is not provided with another member that supports the deformation allowing portion and suppresses the in-plane deformation.

  Moreover, in the fireproof sash of this invention, it is preferable that the said deformation | transformation permission part is each provided in the said shoji frame and the said sash frame.

  Further, the opening structure of the present invention is an opening structure of a building provided with any of the above fire sashes, and the hollow portion provided in the sash frame includes the sash frame and a part of the building frame. It is characterized in that it is partitioned.

Moreover, the building of the present invention is a building provided with any of the above fireproof sashes and other non-fireproof sashes,
The fireproof sash and the non-fireproof sash have the same cross-sectional shape of at least one of the shoji frame and the sash frame.

  According to the present invention, it is possible to provide a fireproof sash, an opening structure, and a building having a predetermined fireproof performance while having a simple configuration.

It is a horizontal sectional view showing a part of a building provided with a fire protection sash and an opening part structure as one embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a horizontal sectional view showing a part of an opening structure 10 having a fire sash 1 as an embodiment of the present invention. Here, the fire sash 1 is a so-called “fire door” having a predetermined fire prevention performance, and constitutes, for example, “specific fire prevention equipment” or “fire prevention equipment” prescribed by laws and regulations such as the Building Standard Law. First, an example of a building provided with the opening structure 10 having the fire sash 1 shown in FIG. 1 will be described.

  The building of this embodiment is a two-story house having, for example, a steel frame structure, and has a foundation made of reinforced concrete and a frame structure composed of frame members such as columns and beams. And a fixed upper structure. The shaft members constituting the shaft frame structure are standardized (standardized) in advance, and are manufactured in advance at a factory and then brought into a building site for assembly.

  The frame structure of the upper structure is composed of a plurality of columns and a plurality of beams. On the outer peripheral portion of the shaft frame structure, an exterior material or the like constituting the outer peripheral wall is disposed. In addition, a floor slab material or the like constituting the floor portion is disposed in the interlayer portion of the shaft frame structure. As the floor slab material, for example, an ALC panel can be used, but another member such as a folded plate, an extrusion-molded cement plate, or a wood panel material may be used. Further, a roof slab material or the like constituting a land roof is disposed on the upper part of the frame structure. Although an ALC panel can be used also about a roof slab material, it is not restricted to an ALC panel.

  The outer peripheral wall of the building is, for example, an external finish layer formed by connecting panel-shaped exterior materials made of lightweight cellular concrete (ALC) with a coating film as a waterproof layer on the surface side, and, for example, phenol foam Consists of a thermal insulation layer constructed by connecting foamed resin-based panel-like insulation materials along the inner surface of the exterior finishing layer, and a finishing material such as a gypsum boat and a wall cloth affixed to the surface of the gypsum board However, the present invention is not limited to this configuration. The outer peripheral wall has at least a predetermined fireproof and waterproof performance.

  The fireproof sash 1 includes a shoji 4 having a glass plate 2 and a shoji frame 3, and a sash frame 5 that supports the shoji 4. The glass plate 2 is formed by, for example, glass in a rectangular plate shape. The shoji 4 in this example has a double-layer glass structure having two glass plates 2 arranged at intervals, but is not limited to this, and has a configuration having one or three or more glass plates 2. It is good.

  The shoji frame 3 is a frame having a rectangular shape in front view, for example, surrounding the glass plate 2 and holding the glass plate 2. The shoji frame 3 has a front wall 3a and a rear wall 3b arranged substantially in parallel. The front wall 3a and the rear wall 3b are arranged so as to sandwich the glass plate 2 from both sides in the front-rear direction (front and back direction) and support the glass plate 2. The shoji frame 3 includes an inner wall 3c (shoulder frame side wall) disposed in the vicinity of the glass plate 2 between the front wall 3a and the rear wall 3b, and an outer wall 3d (shoulder frame) facing the inner wall 3c. Side wall). The shoji frame 3 has a rectangular tube-shaped hollow tube portion 3e composed of a front wall 3a, a rear wall 3b, an inner wall 3c, and an outer wall 3d, and a hollow portion 3f is formed inside the hollow tube portion 3e. Yes.

  The shoji frame 3 can be made of a metal such as aluminum, but is not limited thereto, and may be made of another metal or a resin having a predetermined strength. Moreover, the shoji frame 3 may be configured by combining a plurality of members of different materials or the same material.

  The sash frame 5 can support the shoji 4 by surrounding the shoji 4. The sash frame 5 is configured by upper and lower horizontal frames being framed by left and right vertical frames. Note that the sash frame 5 shown in FIG. 1 is a vertical frame. The sash frame 5 is installed along the inner peripheral edge of the opening in the building, and constitutes a part of the opening structure 10 together with the shoji 4. For example, in addition to the shoji 4 and the sash frame 5, the opening structure 10 is disposed on the indoor side of the sash frame, a connection member for connecting the sash frame to the housing 11 of the building, a reinforcement frame member for reinforcing the sash frame It can be provided with an interior material that imparts decorativeness and design properties, an exterior material disposed on the outdoor side, or other members for improving heat insulation, water-stopping property, fireproofing property, and the like.

  The sash frame 5 is installed directly on a column or beam as a structural frame of a building, or indirectly through another member. The sash frame 5 shown in FIG. 1 has a rectangular tube-shaped main body 5e composed of a front wall 5a, a rear wall 5b, an inner wall 5c (sash frame side wall) and an outer wall 5d (sash frame side wall). A hollow portion 5f is formed inside the portion 5e.

  The sash frame 5 includes a support plate 5g that protrudes inward from the inner wall 5c and a protruding plate portion 5h that protrudes outward from the outer wall 5d. The support plate 5g is disposed in the vicinity of the rear wall 3b of the shoji frame 3, and restricts movement of the shoji 4 to the rear (inside the room). The protruding plate portion 5h can be fixed to the building housing 11 with a fastening member such as a screw.

  The fireproof sash 1 may have, for example, a sliding structure in which the two shojis 4 are slidably held inside the sash frame 5, and a hinge provided on one side of the four frames is a fulcrum. It is good also as a structure of the inner opening or the outer opening type which can be opened and closed by the rocking | displacement displacement, and it is good also as what is called a fitting type structure which made the shoji 4 impossible to open and close.

  The sash frame 5 can be made of a metal such as aluminum, but is not limited to this, and may be made of another metal or a resin having a predetermined strength. Further, the sash frame 5 may be configured by combining a plurality of members of different materials or the same material.

  In this example, the first reinforcing member 6 is fixed to the outer wall 3d of the shoji frame 3 by screws or the like, and the second reinforcing member 7 is attached to the inner wall 5c of the sash frame 5 facing the outer wall 3d. It is fixed with screws. The 1st reinforcement material 6 and the 2nd reinforcement material 7 are comprised by the L-shaped profile, and are arrange | positioned along the axial direction of the shoji frame 3 and the sash frame 5, respectively. The first reinforcing member 6 has a flat plate-like flange portion 6a arranged so as to be perpendicular to the outer wall 3d, and the second reinforcing member 7 is arranged as a flat plate so as to be perpendicular to 5c. Flange portion 7a. The shapes and mounting positions of the first reinforcing member 6 and the second reinforcing member 7 can be changed as appropriate. Moreover, the 1st reinforcement material 6 and the 2nd reinforcement material 7 are not an essential structure.

  The first reinforcing member 6 and the second reinforcing member 7 are arranged in parallel to each other at a position where the flange portion 6a of the first reinforcing member 6 and the flange portion 7a of the second reinforcing member 7 are close to each other. . The flange portion 7a of the second reinforcing member 7 can restrict the movement of the flange portion 6a of the first reinforcing member 6 to the front (outside of the room). Further, when a fire occurs, the flange portion 7a of the second reinforcing member 7 and the flange portion 6a of the first reinforcing member 6 can be engaged with each other, and the twist deformation of the shoji 4 and the sash frame 5 can be suppressed. That is, by providing the first reinforcing material 6 and the second reinforcing material 7 as described above, it is possible to more reliably prevent a gap from being generated between the shoji 4 and the sash frame 5.

  Here, in this example, the inner side wall 3c and the outer side wall 3d constituting the hollow cylindrical portion 3e of the shoji frame 3 are disposed adjacent to the hollow portion 3f, and the glass plate 2 is deformed in the in-plane direction due to thermal expansion. The deformation | transformation permission part which can deform | transform following this is comprised. The in-plane direction of the glass plate 2 is a direction orthogonal to the thickness direction of the glass plate 2 and is a direction parallel to the surface of the glass plate 2.

  Further, the inner wall 5c and the outer wall 5d constituting the main body 5e of the sash frame 5 are disposed adjacent to the cavity 5f, and follow the in-plane deformation due to the thermal expansion of the shoji 4 including the glass plate 2. Thus, a deformable deformable portion is configured.

  In the event of a fire, when the glass plate 2 expands and deforms in the in-plane direction due to heat, the end of the glass plate 2 (the end surface on the inner wall 3c side) comes into contact with the inner wall 3c and the inner wall 3c becomes a hollow portion 3f. Press to the side. As shown by a two-dot chain line in FIG. 1, the inner wall 3 c can be deformed so as to bend toward the cavity 3 f and absorb the expansion deformation of the glass plate 2. Moreover, the shoji frame 3 moves to the sash frame 5 side by the expansion in the in-plane direction of the glass plate 2 and the thermal expansion of the shoji frame 3 itself, and the first reinforcing member 6 and the second reinforcing member 7 come into contact with each other. As a result, as indicated by a two-dot chain line in FIG. 1, the outer wall 3d is pushed toward the cavity 3f and deformed to bend toward the cavity 3f. At this time, the inner wall 5c facing the outer wall 3d is similarly pushed toward the cavity 5f, so that it deforms so as to bend toward the cavity 5f as shown by a two-dot chain line in FIG. Further, the outer wall 5d is also pushed between the shoji 4 and the casing 11 and pushed toward the cavity 5f, and deforms so as to bend toward the cavity 5f as shown by a two-dot chain line in FIG. In this way, the expansion deformation of the shoji 4 in the in-plane direction of the glass plate 2 can be absorbed by the deformable portions of the shoji frame 3 and the sash frame 5. Therefore, the shoji frame 3 and the sash frame 5 can be prevented from being twisted and deformed by the strong contact of the shoji 4 with the sash frame 5, so that a gap is not formed between the shoji 4 and the sash frame 5. can do.

  As described above, in the fireproof sash 1 of the present embodiment, even when the shoji 4 including the glass plate 2 and the shoji frame 3 is expanded due to heat at the time of a fire, the shoji 4 is placed between the shoji 4 and the sash frame 5. A gap can be prevented from being generated. That is, according to the fireproof sash 1 of the present embodiment, it is possible to exhibit a predetermined fireproof performance capable of blocking the flame and preventing the spread of fire when a fire occurs. In addition, since it is not necessary to arrange another reinforcing member or a thermosetting material inside the shoji frame 3 and the sash frame 5, the configuration is simple and the manufacture is facilitated. Furthermore, since it is not necessary to increase the thickness of the glass plate 2 in order to increase the strength and suppress the thermal expansion, the glass plate 2 can be thinned, and the fire sash 1 as a whole can be reduced in weight.

In this example, the shoji frame 3 and the sash frame 5 are each provided with a deformation allowing portion, but only one of them may be provided. That is, when the deformation allowing part is provided in the shoji frame 3, the sash frame 5 may not be provided with the hollow part 5f. Conversely, when the deformation allowing part is provided in the sash frame 5, the shoji frame 5 3 does not need to be provided with the cavity 3f.
Further, from the viewpoint of simplifying the structure of the member and reducing labor and cost for manufacturing, the hollow portion 3f of the shoji frame 3 and the hollow portion 5f of the sash frame 5 support in-plane deformation by supporting a deformation allowing portion. It is preferable that the other member which suppresses is not provided. That is, it is desirable that no other member is disposed in the cavity 3f and the cavity 5f, but the present invention is not limited to this, and at least one of the cavity 3f and the cavity 5f is provided with reinforcing or fireproof properties. Other members for the purpose of improvement or the like may be arranged.

  Moreover, from the viewpoint of enhancing the effect of the present invention of absorbing the in-plane deformation of the shoji 4 including the glass plate 2 and the shoji frame 3 due to thermal expansion and suppressing the deterioration of fire resistance, the shoji as in the present embodiment. It is preferable to provide a deformation allowing portion on both the frame 3 and the sash frame 5.

  Moreover, in the opening part structure 10 of the building provided with the fireproof sash 1 of the present invention, the cavity 5f provided in the sash frame 5 may be partitioned by the sash frame 5 and a part of the building casing 11. That is, for example, a part of the outer wall 5d of the sash frame 5 may be intermittently formed to form an intermittent part, and the hollow part 5f may be partitioned and formed by closing the intermittent part with the housing 11. With such a configuration, the sash frame 5 can be reduced in weight by an amount corresponding to the intermittent portion provided in the sash frame 5.

  Moreover, in the building provided with the fire sash 1 of the present invention, in addition to the fire sash 1, when the non-fire sash not having the predetermined fire resistance is provided, the fire sash 1 and the non-fire sash 1 It is preferable that at least one of the cross-sectional shapes of the sash frame 5 (the cross-sectional shape perpendicular to the axial direction of the member) is the same. Thus, since the kind of member used for a building can be reduced by using the member in which cross-sectional shape is the same for fire prevention sash 1 and non-fire prevention sash, construction cost can be reduced.

  The fire protection sash, the opening structure, and the building according to the present invention are not limited to the configuration of the above-described embodiment, and may be realized by various configurations without departing from the content described in the claims. Is possible. For example, the cross-sectional shapes of the shoji frame 3 and the sash frame 5 are not limited to the example illustrated in FIG. 1, and at least one of the shoji frame 3 and the sash frame 5 may be deformed in an in-plane direction due to thermal expansion of the glass plate 2. If the deformation | transformation permission part which can be deform | transformed following is provided, each cross-sectional shape can be changed. Moreover, the hollow cylinder part 3e of the shoji frame 3 and the main body part 5e of the sash frame 5 do not necessarily have a cylindrical shape closed over the entire circumference, and may have a shape in which a part of the circumferential direction is intermittent.

1: Fireproof sash 2: Glass plate 3: Shoji frame 3a: Front wall 3b: Rear wall 3c: Inner side wall (deformation allowable portion, shoji frame side wall)
3d: Outer wall (deformation allowance, shoji frame side wall)
3e: hollow cylinder part 3f: hollow part 4: shoji 5: sash frame 5a: front wall 5b: rear wall 5c: inner side wall (deformation allowable part, sash frame side wall)
5d: Outer wall (deformation allowable part, sash frame side wall)
5e: Body 5f: Cavity 5g: Support plate 5h: Projection plate 6: First reinforcement 6a: Flange 7: Second reinforcement 7a: Flange 10: Opening structure 11: Housing

Claims (5)

A shoji having a glass plate and a shoji frame for holding the glass plate;
A sash frame surrounding and supporting the periphery of the shoji, and a fire sash comprising:
A fireproof sash, wherein at least one of the shoji frame and the sash frame is provided with a deformation allowing portion that can be deformed following the in-plane deformation due to thermal expansion of the glass plate. The deformation allowing portion has at least one of a shoji frame side wall adjacent to a cavity provided in the shoji frame and a sash frame side wall adjacent to a cavity provided in the sash frame,
The fire protection sash according to claim 1, wherein the hollow portion is not provided with another member that supports the deformation allowing portion and suppresses the in-plane deformation.   The fireproof sash according to claim 1 or 2, wherein the deformation allowing portion is provided in each of the shoji frame and the sash frame.   It is an opening part structure of a building provided with the fire protection sash as described in any one of Claims 1-3, Comprising: The cavity provided in the said sash frame is divided by the said sash frame and a part of the building frame. An opening structure is formed. A building comprising the fireproof sash according to any one of claims 1 to 3 and another non-fireproof sash,
The fireproof sash and the non-fireproof sash are buildings having the same cross-sectional shape of at least one of a shoji frame and a sash frame.

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