JP6778292B2 - Wooden opening structure - Google Patents

Description

The present invention relates to a wooden opening structure such as a window or a door provided on a wall or the like of a wooden building.

In the conventional wooden fireproof structure, for example, when heat is applied to the bearing wall, there is a standard that fireproof measures are taken so that the wooden structural members inside do not burn for a certain period of time or longer. Therefore, a gypsum board having a predetermined thickness is often stretched on the side surface of the bearing wall as a fireproof coating material. On the other hand, when the bearing wall is provided with an opening, fireproof measures should be taken on the edge surface of the opening so that the wooden structural members inside the bearing wall are not burned by the heat from the edge surface.

Therefore, conventionally, two reinforced gypsum boards having a thickness of, for example, 21 mm are arranged on the outside (for example, outdoor side) and inside (for example, indoor side) of the opening frame, and two reinforced gypsum boards are also provided on the edge surface. Fireproof measures are taken so that they are arranged in layers. The ignition temperature of wood is 260 ° C., but when the temperature of reinforced gypsum board reaches 100 ° C., water of crystallization is decomposed and the temperature rises and stagnate, so that the opening frame including the edge surface can be prevented from burning. As a wooden opening structure of a building, for example, the technique of Patent Document 1 is known.

Japanese Unexamined Patent Publication No. 2012-158947

However, as described above, when fireproof measures are taken to dispose the reinforced gypsum board also on the edge surface, the reinforced gypsum board is easily cracked when, for example, the fitting frame of the aluminum sash door is attached to the opening. It cannot be directly fastened to the reinforced gypsum board on the edge surface with screws or the like. Therefore, it is necessary to attach a wood base material or the like to the surface of the reinforced gypsum board on the edge side. In this case, since the opening of the opening protrudes greatly inside the opening, the opening size becomes narrow and a predetermined fitting frame or the like cannot be attached.

The present invention has been made in view of such circumstances, and a wooden opening structure capable of making the edge surface a fireproof structure so that the openings such as windows and doors due to the wooden opening frame are not narrowed. The challenge is to provide.

As a means for solving the above-mentioned problems, in the invention according to claim 1 , the heat-expandable refractory member installed on the edge surface of the opening provided in the wooden building and the edge portion of the heat-expandable refractory member are described above. and a regulating means for regulating the away from small surface, the regulating means, that a tree forming opening structure you wherein along the edge of the opening is a refractory tape which extends is there.

According to this configuration, the refractory tape is simply extended and attached along the edge of the heat-expandable fire-resistant member corresponding to the edge of the opening, and the heat-expandable fire-resistant member does not separate from the edge surface. Therefore, this regulation work can be easily performed.

The invention according to claim 2, wherein the refractory tape is a timber opening structure according to claim 1, characterized in that the refractory metal tape or refractory glass cloth tape.

According to this configuration, a ready-made fire-resistant metal tape or fire-resistant glass cloth tape can be used as the fire-resistant tape. Therefore, the refractory tape can be prepared easily and inexpensively.

The invention according to claim 3 is a regulatory means for regulating a heat-expandable refractory member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable refractory member from the edge surface. When, wherein the regulating means includes a surface of the heat-expandable fire member, it is a tree-forming opening structure you characterized in that it is fixed to a side surface of the wooden building which intersects the surface ..

According to this configuration, since the regulating means is fixed to the surface of the heat-expandable refractory member and the side surface of the wooden building intersecting the surface, the fixing strength of the regulating means can be increased. Therefore, by the regulating means, the heat-expandable refractory member can be tightly regulated so as not to separate from the edge surface.

The invention according to claim 4 is a regulatory means for regulating a heat-expandable refractory member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable refractory member from the edge surface. The wooden building has a wooden member installed along the edge surface of the opening and a refractory covering material installed on the side surface of the wooden member, and the regulating means is said to be said. and the surface of the thermally expandable fireproof member, a wood concrete opening structure you wherein the side or sides of the fireproofing material of the wooden member, and is fixed to crossing the surface.

According to this configuration, it is possible to prevent the edge of the heat-expandable refractory member on the edge surface of the wood member from rising from the wood member. Therefore, the wood member along the edge surface can be protected from the high heat of the fire by the heat-expandable refractory member.

The invention according to claim 5 is a regulatory means for restricting a heat-expandable fire-resistant member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable fire-resistant member from the edge surface. The wooden building has a wooden member installed along the edge surface of the opening and a fireproof coating material installed on the side surface of the wooden member, and the thermal expansion fireproof member. Is installed over the surface of the wooden member on the opening side and the end surface of the fireproof coating material on the opening side, and the regulating means intersects the surface of the heat-expandable fireproof member and the surface. a tree forming opening structure you wherein is fixed the side surface of the fireproof coating materials, in which.

According to this configuration, the wood member along the edge surface can be protected from the high heat of the fire by the heat-expandable refractory member.

According to the sixth aspect of the present invention, in a configuration in which a plurality of refractory coating materials are installed on the side of the wood member, the heat-expandable refractory member is formed on the surface of the wood member on the opening side. The plurality of stacked refractory coating materials are installed over the end face on the opening side, and the regulating means is the surface of the heat-expandable refractory member and the plurality of stacked refractories intersecting the surface. The wooden opening structure according to claim 5 , wherein the coating material is fixed to the outermost side surface of the fireproof coating material or between the fireproof coating materials.

According to this configuration, when the regulating means is fixed to the surface of the heat-expandable refractory member and the side surface of the outermost refractory coating material among the plurality of stacked refractory coating materials intersecting the surface. Since the distance between the regulating means and the fore-edge surface is long, it becomes difficult for heat to be transferred to the fore-edge surface, and the effect of protecting the wood member along the fore-edge surface from the high heat of fire can be further enhanced. Further, when the regulating means is fixed between the surface of the heat-expandable fireproof member and between the fireproof coating materials of a plurality of stacked fireproof coating materials intersecting the surface, the regulating means is difficult to be removed. Therefore, the effect of protecting the wood member along the edge surface from the high heat of the fire can be further enhanced.

The invention according to claim 7 is a regulatory means for restricting the thermal expansion fireproof member installed on the edge surface of an opening provided in a wooden building and the edge portion of the thermal expansion fireproof member from the edge surface. The wooden building is fixed to the wooden member installed along the edge surface of the opening, the base member installed on the outdoor side of the wooden member, and the base member. The heat-expandable fireproof member having a sash is installed over the surface of the wooden member on the opening side and the end surface of the base member on the opening side, and the regulating means is the heat. and the surface of the expandable refractory member is a wood concrete opening structure you wherein the side surface of the base member, and is fixed to crossing the surface.

According to this configuration, even if heat is transferred from the sash to the wood member in the event of a fire, the base member installed on the outdoor side (sash side) of the wood member will be burnt. It can be protected from high heat.

The invention according to claim 8 is a regulatory means for regulating a heat-expandable fire-resistant member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable fire-resistant member from the edge surface. The wooden building is provided with a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and an end face side of the face material. The heat-expandable fire-resistant member has a sash to be installed, and the heat-expandable fire-resistant member is installed over the surface of the face material on the opening side, and the regulating means is the surface of the heat-expandable fire-resistant member and the surface. a tree forming opening structure characterized in that it is fixed and the end face side of the timber, the.

According to this configuration, even when heat is transferred from the sash to the wood member in the event of a fire or the like, the face material installed on the surface of the wood member on the opening side is burnt, so that the wood member on the lower side of this face material is burnt. Can be protected from high heat.

The invention according to claim 9 is a regulatory means for regulating a heat-expandable fire-resistant member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable fire-resistant member from the edge surface. The wooden building is provided with a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and an end face side of the face material. The heat-expandable fire-resistant member has a sash to be installed, and the heat-expandable fire-resistant member is installed over the surface of the face material on the opening side, and the regulating means is the surface of the heat-expandable fire-resistant member and the surface. It is fixed to the end face side of the sash side of the material and is fixed in a U shape to the surface of the heat-expandable fireproof member and the end face and the lower surface of the face material on the opposite side of the sash. a tree forming opening structure shall be the features.

According to this configuration, both ends of the heat-expandable refractory member are fixed to the face material by the regulating means, but in particular, one end side of the heat-expandable refractory member is firmly fixed to the face material in a U-shape by the regulating means. As a result, the heat-expandable refractory member is held in close contact with the edge surface, so that even if the heat-expandable refractory member expands significantly due to the heat of the fire during a fire, the space between the heat-expandable refractory member and the edge surface There is no gap. Therefore, the heat-expandable refractory member can protect the edge surface from the high heat of the fire.

The invention according to claim 10 is a regulatory means for restricting a heat-expandable fire-resistant member installed on the edge surface of an opening provided in a wooden building and an edge portion of the heat-expandable fire-resistant member from the edge surface. The wooden building is provided with a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and an end face side of the face material. The heat-expandable fire-resistant member has a sash to be installed, and the heat-expandable fire-resistant member is installed over the surface of the face material on the opening side, and the regulating means is the surface of the heat-expandable fire-resistant member and the surface. It is fixed in a U shape to the end face and the lower surface of the material on the sash side, and is fixed in a U shape to the surface of the heat-expandable fireproof member and the end face and the lower surface of the face material on the opposite side of the sash. a tree forming opening structure characterized in that it is.

According to this configuration, both ends of the heat-expandable refractory member are firmly fixed to the face material in a U-shape by a regulating means. As a result, the heat-expandable refractory member is held in a closer contact state with the edge surface, so that even if the heat-expandable refractory member expands significantly due to the heat of the fire during a fire, the heat-expandable refractory member and the edge surface There is no gap between them. Therefore, the heat-expandable refractory member can more effectively protect the edge surface from the high heat of the fire.

In the invention according to claim 11 , fireproof coating materials are arranged on the upper and lower surfaces of the edge surface of the opening, and the heat-expandable fireproof member having a thickness thinner than the fireproof coating material is provided on the left and right surfaces of the edge surface. The wooden opening structure according to any one of claims 1 to 10 , wherein the arrangement is regulated by the regulating means.

According to this configuration, since the heat-expandable fire-resistant member having a thickness thinner than the fire-resistant coating material is arranged on the left and right surfaces of the edge surface, compared with the case where the fire-resistant coating material is arranged on the general edge surface. The width (left-right width) on which the bearing wall is arranged becomes longer. Therefore, since the bearing wall length can be lengthened, the bearing capacity of the bearing wall can be improved. Further, although the heat-expandable refractory member is expensive, since the heat-expandable refractory member is used only on the left and right sides of the four front, top, bottom, left, and right sides of the edge surface, the cost can be reduced accordingly.

According to the wooden opening structure of the present invention, the fore edge surface can be made a fireproof structure so that the openings such as windows and doors due to the wooden opening frame are not narrowed.

It is a perspective view which shows the wooden opening provided in the wall of the building which concerns on embodiment of this invention. It is sectional drawing which shows the wooden opening structure when the wooden opening is cut by the line A1-A1 of FIG. It is a front perspective view which shows the structure of the wooden opening frame provided in the wall of a building. (A) A perspective view showing the wooden opening before the fire resistance test, (b) A perspective view showing the wooden opening after the fire resistance test, (c) The left plate of the opening frame after removing the carbonized heat-foamed fireproof sheet. It is a perspective view. (A) A cross-sectional view showing a state in which the heat-foamed refractory sheet is foamed and expanded in the wooden opening structure of the present embodiment, and (b) in the wooden opening structure, the heat-foamed refractory sheet not fixed with stainless tape is foamed. It is a cross-sectional view which shows the state of expansion. It is a figure which shows the relationship between the burning time (horizontal axis) and the temperature (vertical axis) of the edge surface when the opening of a wooden opening structure is burned for 60 minutes. It is sectional drawing of the wooden opening structure of the building which concerns on modification 1 of embodiment of this invention. It is sectional drawing of the wooden opening structure of the building which concerns on modification 2 of embodiment of this invention. It is sectional drawing of the wooden opening structure of the building which concerns on modification 3 of embodiment of this invention. It is sectional drawing of the wooden opening structure of the building which concerns on modification 4 of embodiment of this invention. It is sectional drawing of the wooden opening structure of the building which concerns on modification 5 of embodiment of this invention. It is sectional drawing of the wooden opening structure of the building which concerns on modification 6 of embodiment of this invention. It is a perspective view which shows the wooden opening provided in the wall of the building which concerns on modification 7 of embodiment of this invention. It is sectional drawing which shows the wooden opening structure when the wooden opening is cut by the line A2-A2 of FIG. It is sectional drawing which shows the wooden opening structure when the wooden opening is cut by the line A3-A3 of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Structure of Embodiment>
FIG. 1 is a perspective view showing a wooden opening provided in a wall of a building according to an embodiment of the present invention, and FIG. 2 is a wooden opening structure when the wooden opening is cut by lines A1-A1 of FIG. It is sectional drawing which shows.

The wooden opening 10 shown in FIG. 1 is, for example, an opening for attaching a window sash, and is formed by the wooden opening frame 11 shown in FIG. The opening frame 11 constitutes the wood member according to the claim.

The opening frame 11 shown in FIG. 3 is configured by combining the upper, lower, left and right plates 11a, 11b, 11c, and 11d so as to form a square opening 10. Plate members 12 to be erected columns are joined to and arranged on the left plate 11c and the right plate 11d arranged in the vertical direction of the opening frame 11. The upper plate 11a arranged in the horizontal direction is supported by the left and right plates 11c and 11d arranged in the vertical direction with the upper plate 11a sandwiched from the left and right. Further, the lower lower plate 11b parallel to the upper plate 11a is supported by the plates 11j and 11j arranged in the downward direction at the left and right ends of the lower surface of the lower plate 11b. The four surfaces inside the opening of the opening frame 11 are the edge surfaces 11k. In FIG. 3, a structural plywood 14 is attached to the outdoor side of the opening frame 11 with nails or the like. Although not shown, structural plywood or the like is also attached to the indoor side of the opening frame 11 with nails or the like. With such a configuration, the supporting strength of the opening frame 11 is increased.

Next, the structure will be described on behalf of the cross-sectional structure on the lower plate 11b side of the opening frame 11 shown in FIG. Aluminum foil tape 20 is attached to the upper surface of the lower plate 11b of the opening frame 11, the outdoor side on the left side when facing the drawing of the lower plate 11b, and the indoor side surface on the opposite side. The aluminum foil tape 20 can be omitted. In place of the structural plywood 14, reinforced gypsum boards 15a and 15b as fireproof coating materials are joined in two layers on both the outdoor side and the indoor side of the opening frame 11 via an aluminum foil tape 20. .. However, the reinforced gypsum boards 15a and 15b on both sides or one side of the opening frame 11 may be structural plywood 14. The reinforced gypsum boards 15a and 15b may be one or three or more stacked. The reinforced gypsum boards 15a and 15b constitute the fireproof coating material according to claim.

The upper end surfaces (end surfaces) of the reinforced gypsum boards 15a and 15b are flush with the edge surface 11k of the lower plate 11b. A heat-foamed fireproof sheet (also referred to as a sheet) is extended over the upper surface (surface) of the aluminum foil tape 20 attached to the edge surface 11k and the upper end surfaces of the reinforced gypsum boards 15a and 15b on both sides of the upper surface. ) 17 is pasted.

The heat-foaming refractory sheet 17 has a property of foaming due to the high heat of fire, and effectively blocks heat by forming a carbonized layer expanded by foaming. Upon receiving heat, the sheet 17 expands to a thickness of preferably 5 times or more, more preferably 10 to 50 times, for example, as compared with the original thickness. The coefficient of thermal expansion of the sheet 17 is a magnification with respect to the original thickness (thickness at 20 ° C.) when heated at 650 ° C. for 15 minutes. The aluminum foil tape 20 reflects radiant heat directly transmitted by heat rays of far infrared rays, making it difficult to heat the edge surface 11k. The heat-foamed fire-resistant sheet 17 constitutes the heat-expandable fire-resistant member according to the claim. As the heat-foaming refractory sheet 17, for example, "SK Taika Sheet" (registered trademark) of SK KAKEN Co., Ltd. can be used. Further, when the thickness of one heat-foamed fire-resistant sheet 17 before foaming is smaller than the thickness satisfying the predetermined fire-resistant performance (for example, 3 mm, 4 mm, 5 mm, more preferably 6 mm or more), a plurality of heat-foamed fire-resistant sheets Sheets 17 may be laminated. When the thickness of the heat-foamed refractory sheet 17 to be laminated is different, it is preferable to laminate the thick sheet on the thin sheet.

Further, on the upper surface (or surface) on the outer side, which is the edge of the outdoor side (left side when facing the drawing) of the heat-foamed fireproof sheet 17 shown in FIG. 2, and the side surface of the reinforced gypsum board 15b intersecting the upper surface. The stainless steel tape 18 is attached so as to have an L-shape in cross section. Similarly, the stainless tape 18 is attached to the upper surface on the inner side, which is the edge of the sheet 17 on the indoor side, and the side surface of the reinforced gypsum board 15b that intersects the upper surface so as to have an L-shape in cross section. ing. In the stainless steel tape 18, the portion attached to the upper surface side of the sheet 17 is the upper surface portion 18a, and the portion attached to the reinforced gypsum board 15b is the side surface portion 18b. The stainless steel tape 18 is a thin stainless steel tape having fire resistance (preferably a thickness of 0.01 to 0.2 mm), and an adhesive is applied to one side thereof.

Instead of the stainless steel tape 18, a refractory glass cloth tape or a refractory sheet tape made of a material having low thermal conductivity such as glass fiber or carbon fiber may be used. The stainless steel tape 18, refractory glass cloth tape or refractory sheet tape constitutes the regulatory means described in the claims. Further, the stainless steel tape 18, the refractory glass cloth tape or the refractory sheet tape constitutes the refractory tape according to the claim. Further, these fire-resistant tapes are required to have a smaller coefficient of thermal expansion than the heat-foamed fire-resistant sheet 17 as a heat-expandable fire-resistant member (the coefficient of thermal expansion is preferably less than 5 times, more preferably 4 times or less). To do. A tape other than the above may be used as long as it is a fire-resistant tape that can fix the sheet 17.

The side surface portions 18b of the stainless tape 18 are fixed to the reinforced gypsum boards 15b and 15a at a plurality of places by staples 19. The fixing mode of the stainless steel tape 18 is also shown in FIG. As shown in FIG. 1, stainless steel tapes are provided on the outdoor side and the indoor side of the heat-foamed refractory sheet 17 attached to the four edge surfaces 11k (FIG. 2) of the opening 10 in an L-shaped cross section. 18 is pasted and fixed.

In the wooden opening structure 1A having this configuration, a fire resistance test was performed on the edge surface 11k of the opening frame 11. This fire resistance test was carried out by the wooden opening structure 1A of only the wooden opening frame shown in FIG. 4 (a). In the opening 10 of the wooden opening structure 1A, a heat-foamed fireproof sheet 17 attached to the edge surface 11k and a stainless steel tape 18 for fixing the sheet 17 are exposed.

The state after burning the opening 10 of the wooden opening structure 1A for 60 minutes is an expanded state in which the heat-foamed refractory sheet 17 is carbonized, as shown in FIG. 4 (b). When the carbonized sheet 17 is removed, the carbonized opening frame 11 is represented by the left plate 11c (FIG. 3) of the opening frame 11 in the frame I of FIG. 4 (b) in FIG. 4 (c). The left plate 11c and the edge surface 11k of the above appear.

In a state where the sheet 17 shown in FIG. 4B is expanded by heat, as shown in FIG. 5A, the upper surface portion 18a (FIG. 2) of the stainless steel tape 18 becomes a side surface portion as the sheet 17 expands. It moves while opening at a larger angle with respect to 18b. In other words, the upper surface portion 18a of the stainless steel tape 18 is deformed following the expansion of the sheet 17. At this time, since the side surface portion 18b is fixed by the adhesive and the staple needle 19, even if the edge portion 17a of the sheet 17 expands, it is held in close contact with the reinforced gypsum board 15b. Therefore, as shown in FIG. 5B, the stainless steel tape 18 has a gap G1 between the edge portion 17a of the sheet 17 and the edge surface 11k even if the sheet 17 expands. The sheet 17 is held in the state shown in a). Therefore, the edge surface 11k is sealed with the sheet 17 and the aluminum foil tape 20 to protect it from the high heat of fire.

As shown in FIG. 5B, when the sheet 17 expands without the stainless steel tape 18, the edges 17a of the sheet 17 are peeled off from the reinforced gypsum boards 15a and 15b and float up, and the reinforced gypsum boards 15a and 15b and the like. A gap G1 is formed between the edge surface and the edge surface 11k. Since heat enters from this gap G1, the edge surface 11k burns, and further, the opening frame 11 burns.

<Effect of this embodiment>
FIG. 6 shows the relationship between the burning time (horizontal axis) when the opening 10 of the wooden opening structure 1A of the present embodiment is burned for 60 minutes and the temperature (vertical axis) of the edge surface 11k. However, the temperature measurement position of the edge surface 11k is the position of P1 shown in FIG. As shown in FIG. 6, the temperature of the edge surface 11k is about 10 ° C. at 0 minutes before combustion. The temperature of the edge surface 11k is 100 ° C. at 20 minutes after combustion, about 130 ° C. at 40 minutes, and about 170 ° C. at 60 minutes. Since the ignition temperature of wood is 260 ° C., the temperature of the edge surface 11k can be set to about 170 ° C., which is significantly lower than the ignition temperature, even after 60 minutes have passed. As a result, the edge surface 11k could be protected from combustion.

As described above, according to the wooden opening structure 1A of the embodiment, even if the opening 10 is burned for 60 minutes, the edge surface 11k can be protected from burning as shown in FIG. 4C.

In the wooden opening structure 1A, an aluminum foil tape 20 is attached to the edge surface 11k, and a heat foam fireproof sheet 17 is attached onto the aluminum foil tape 20 and the reinforced gypsum boards 15a and 15b on both sides of the edge surface 11k. It is attached. Further, a stainless tape 18 is attached to the upper surface of the sheet 17 and the side surface of the reinforced gypsum board 15b intersecting the upper surface so as to have an L-shape in cross section. Further, the side surface portions 18b of the stainless tape 18 are fixed to the reinforced gypsum boards 15b and 15a at a plurality of places with staples 19.

In such a wooden opening structure 1A, the wooden opening structure 1A is produced only by attaching the aluminum foil tape 20 and the heat-foaming fireproof sheet 17 to the edge surface 11k, and attaching the stainless tape 18 and stapling work. Since it can be produced, it can be easily produced.

Further, since the aluminum foil tape 20 and the thin heat-foamed refractory sheet 17 are only attached to the edge surface 11k of the opening frame 11, the size of the opening 10 (FIG. 1) is not reduced. As a result, a predetermined fitting frame or the like can be attached to the edge surface 11k of the wooden frame via the sheet 17. For this reason, it is not necessary to attach a wood base material or the like to the opening as in the conventional case, and it is possible to save the trouble of attaching the wood base material or the like.

Therefore, according to the wooden opening structure 1A, the edge surface 11k can be made a fireproof structure so that the opening 10 of the window, door, etc. due to the wooden opening frame 11 is not narrowed and no extra work is required. ..

Even if the edge surface 11k does not have the aluminum foil tape 20, the sheet 17 can protect it from the high heat of fire. Further, instead of the reinforced gypsum board 15a on both sides or one side of the edge surface 11k, the structural plywood 14 may be used as follows. That is, the sheet 17 is attached to the edge surface 11k and the end surface of the structural plywood 14, and the stainless tape 18 is attached in an L shape to the upper surface of the sheet 17 and the side surface of the structural plywood 14 intersecting the upper surface. The side surface portion 18b of the stainless tape 18 may be further fixed with a staple needle 19.

Even with this configuration, when the sheet 17 foams and expands due to the high heat of the fire, the stainless steel tape 18 cannot form a gap G1 {see FIG. 5 (b)} between the edge 17a of the sheet 17 and the edge surface 11k. The sheet 17 is held so as to. Therefore, the edge surface 11k can be protected from the high heat of the fire.

<Modification 1 of the embodiment>
FIG. 7 is a cross-sectional view of the wooden opening structure of the building according to the first modification of the embodiment of the present invention, and is a cross-sectional view corresponding to FIG. In the wooden opening structure 1B of the modified example 1 shown in FIG. 7, the same reference numerals are given to the portions corresponding to the wooden opening structure 1A shown in FIG. 2, and the description thereof will be omitted as appropriate.

In the wooden opening structure 1B shown in FIG. 7, reinforced gypsum board (fireproof coating material) 15a is arranged on each of the outdoor side and the indoor side, which are both sides of the edge surface 11k of the opening frame (wooden member) 11. There is. In addition, instead of the reinforced gypsum board 15a, the structural plywood 14 may be arranged on both or one of the outdoor side and the indoor side. The upper end surface of the reinforced gypsum board 15a is flush with the edge surface 11k. A heat-foamed fireproof sheet 17 is attached to the upper end surfaces of the aluminum foil tape 20 attached to the edge surface 11k and the reinforced gypsum boards 15a on both sides of the edge surface 11k. Reinforced gypsum board 15b is arranged on the left and right end faces of the sheet 17 and the outer surface of the board 15a flush with the end face. The upper end surface of the reinforced gypsum board 15b and the upper surface of the sheet 17 are flush with each other.

Further, the stainless tape 18 is attached to the upper surface and the end surface of the outer side and the inner side of the heat-foamed refractory sheet 17 and the side surface of the reinforced gypsum board 15a intersecting the upper surface so as to have an L-shaped cross section. ing. Further, the reinforced gypsum board 15a is arranged so that the reinforced gypsum board 15b is overlapped with the side surface portion 18b of the stainless tape 18 interposed therebetween.

According to this configuration, the side surface portion 18b of the stainless tape 18 is adhered to the reinforced gypsum board 15a as a fireproof coating material, and is sandwiched and fixed by the reinforced gypsum board 15b. Therefore, the side surface portion 18b of the stainless steel tape 18 is more firmly fixed than the upper surface portion 18a. Due to this strong fixing, the stainless steel tape 18 does not come off from the reinforced gypsum board 15a even if the sheet 17 expands due to the heat of fire. Therefore, since the expanding sheet 17 is held in close contact with the edge surface 11k by the stainless steel tape 18, the edge surface 11k can be protected from the high heat of fire by the sheet 17. The wooden opening structure 1B may be configured without the aluminum foil tape 20.

<Modification 2 of the embodiment>
FIG. 8 is a cross-sectional view of the wooden opening structure of the building according to the second modification of the embodiment of the present invention, and is a cross-sectional view corresponding to FIG. In the wooden opening structure 1C of the modification 2 shown in FIG. 8, the parts corresponding to the wooden opening structure 1A shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

In the wooden opening structure 1C shown in FIG. 8, a heat-foamed fireproof sheet 17 is attached on an aluminum foil tape 20 attached to the edge surface 11k. Further, a fire-resistant glass cloth tape (tape) is formed on the upper surface and the end surface of the outer side and the inner side of the heat-foamed fire-resistant sheet 17 and the side surface of the opening frame 11 intersecting the upper surface so as to have an L-shape in cross section. 22 is pasted. Further, on the side surface side of the opening frame 11, two layers of reinforced gypsum boards 15a and 15b are arranged so as to sandwich the side surface portion 22b of the tape 22. The upper end surfaces of the reinforced gypsum boards 15a and 15b are flush with the upper surface of the sheet 17. The stainless steel tape 18 may be used instead of the tape 22.

According to this configuration, the side surface portion 22b of the tape 22 is sandwiched and fixed between the opening frame 11 and the reinforced gypsum board 15a, so that the tape 22 is more firmly fixed than the upper surface side of the tape 22. Therefore, even if the sheet 17 expands due to the heat of fire, the tape 22 does not come off. As a result, the expanding sheet 17 is held in close contact with the edge surface 11k by the tape 22, so that the edge surface 11k can be sealed with the sheet 17 to protect it from the high heat of fire. Since the tape 22 has low thermal conductivity, it becomes difficult for heat to be transferred to the opening frame 11, and it becomes more difficult to burn.

Further, at the factory, a heat-foamed fire-resistant sheet 17 can be attached to the edge surface 11k, and the sheet 17 can be fixed with a fire-resistant glass cloth tape 22 having low thermal conductivity to manufacture the opening frame 11. Therefore, the assembly work at the site where the building is built becomes easy.

<Modification 3 of the embodiment>
FIG. 9 is a cross-sectional view of the wooden opening structure of the building according to the third modification of the embodiment of the present invention, and is a cross-sectional view corresponding to FIG. In the wooden opening structure 1D of the modification 3 shown in FIG. 9, the portions corresponding to the wooden opening structure 1B shown in FIG. 7 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden opening structure 1D shown in FIG. 9 is a structure when the aluminum sash door 40 is attached to the opening 10, and has the following structure. A reinforced gypsum board (fireproof coating material) 15a is arranged on the indoor side of the opening frame (wooden member) 11, and a structural plywood 14 (structural plywood on the indoor side in FIG. 3) is arranged on the outdoor side of the opening frame 11. 14) is arranged. Further, on the outdoor side of the structural plywood 14, a sash mounting frame 30 is arranged along the square shape of the opening frame 11. The sash mounting frame 30 is, for example, a plate material having a thickness of about 15 mm, and has a vertical width slightly wider than the vertical width of the opening frame 11. The aluminum sash door 40 constitutes the sash described in the claims. The sash mounting frame 30 constitutes the base member according to the claim. The sash mounting frame 30 may be a plate material having a thickness of 15 mm or more. Further, the sash mounting frame 30 may be a combination of a plurality of materials instead of a single material.

The upper end surface of the reinforced gypsum board 15a on the indoor side and the upper end surface of the structural plywood 14 and the sash mounting frame 30 on the outdoor side are flush with the edge surface 11k of the opening frame 11. The right side surface of the opening frame 11, the side surface of the structural plywood 14, the upper surface of the aluminum foil tape 20 attached to the edge surface 11k, and the flush surface of the reinforced gypsum board 15a, the structural plywood 14, and the sash mounting frame 30. A heat-foamed fireproof sheet 17 is attached to the upper end surface.

On the outdoor side, an outer wall material 15c is disposed on the left end surface of the seat 17 and the side surface of the sash mounting frame 30 via a stainless tape 18 and a mounting portion 41a of the aluminum sash door 40, which will be described later. Further, on the indoor side, the reinforced gypsum board 15b is disposed on the right end surface of the sheet 17 and the side surface of the reinforced gypsum board 15a via a stainless tape 18 described later.

Stainless steel tape 18 is attached to the upper surface and the end surface on the outer side of the sheet 17 and the side surface of the sash mounting frame 30 intersecting the upper surface so as to have an L-shape in cross section. Similarly, stainless tape 18 is attached to the upper surface and end surface of the inner side of the sheet 17 and the side surface of the reinforced gypsum board 15a intersecting the upper surface so as to have an L-shape in cross section.

In the aluminum sash door 40, the aluminum lower frame 41 is integrally provided with a mounting portion 41a extending downward. The mounting portion 41a is arranged between the stainless tape 18 attached to the sash mounting frame 30 and the outer wall material 15c, and the sash mounting frame 30 and the structural plywood 14 are arranged together with the stainless tape 18 by the screws 32. And fixed to the lower plate 11b.

Further, the lower frame 41 includes two parallel rails 41b and 41c on the upper side. Door wheels (not shown) between the outer glass door 43 and the inner glass door 44 of the aluminum sash door 40 are movably fitted in the rails 41b and 41c, and the glass doors 43 and 44 are fitted in the rails. It is possible to move on 41b and 41c.

Such a wooden opening structure 1D includes a sash mounting frame 30 installed on the structural plywood 14 on the outdoor side of the opening frame 11 and an aluminum sash door 40 fixed to the opening frame 11 via the sash mounting frame 30. It is characterized by having. Further, the heat-foamed refractory sheet 17 is installed over the edge surface 11k, which is the surface of the opening frame 11 on the opening side, and the upper end surface of the sash mounting frame 30 on the opening 10 side. Further, the stainless steel tape 18 as a regulating means is fixed to the surface of the sheet 17 and the side surface of the sash mounting frame 30 intersecting the surface.

According to this configuration, even if the sheet 17 expands due to the heat of the fire on the side of the aluminum sash door 40, the sheet 17 is held in close contact with the edge surface 11k by the stainless tape 18, and there is no gap. The sheet 17 can protect the edge surface 11k from the high heat of fire. Further, even when heat is transferred to the mounting portion 41a of the lower frame 41 of the aluminum sash door 40, the sash mounting frame 30 is only burnt within a specified time such as 60 minutes, and the inner structural plywood 14 and the structural plywood 14 , The side surface of the opening frame 11 and the edge surface 11k can be protected from high heat.

<Modification example 4 of the embodiment>
FIG. 10 is a cross-sectional view of the wooden opening structure of the building according to the fourth modification of the embodiment of the present invention, and is a cross-sectional view corresponding to FIG. In the wooden opening structure 1E of the modified example 4 shown in FIG. 10, the same reference numerals are given to the portions corresponding to the wooden opening structure 1D shown in FIG. 9, and the description thereof will be omitted as appropriate.

The wooden opening structure 1E shown in FIG. 10 is a structure when the aluminum sash door 40 is attached to the opening 10, and is configured as follows. A reinforced gypsum board (fireproof coating material) 15a is arranged on the indoor side of the opening frame (wooden member) 11, and a structural plywood 14 is arranged on the outdoor side of the opening frame 11. The upper end surface of the structural plywood 14 and the upper end surface of the reinforced gypsum board 15a are flush with the edge surface 11k of the opening frame 11.

The right side surface of the opening frame 11, the side surface of the structural plywood 14, the upper surface of the aluminum foil tape 20 attached to the edge surface 11k, the upper end surface of the structural plywood 14, and the upper end surface of the reinforced gypsum board 15a For example, a face material 34 having a thickness of 5 mm or 8 mm is arranged on the entire surface. The face material 34 is a material having heat resistance such as a gypsum plate containing a glass fiber non-woven fabric, and it is preferable that the face material 34 has a thickness in consideration of heat resistance and the like. A reinforced gypsum board 15a is vertically arranged on the lower surface of the face material 34 on the indoor side. A heat-foamed refractory sheet 17 is attached to the upper surface (surface) of the face material 34.

On the outdoor side, an outer wall material 15c is disposed on the end faces of the sheet 17 and the face material 34 and the side surfaces of the structural plywood 14 via the stainless tape 18 and the mounting portion 41a of the aluminum sash door 40, which will be described later. Further, on the indoor side, the reinforced gypsum board 15b is disposed on the right end surfaces of both the sheet 17 and the face material 34 and the side surface of the reinforced gypsum board 15a via a stainless tape 18 described later.

Stainless steel tape 18 is attached to the upper surface and end surface of the outer side of the sheet 17, the end surface of the face material 34 intersecting the upper surface, and the side surface of the structural plywood 14 so as to have an L-shape in cross section. .. Similarly, stainless steel tape 18 is attached to the right end surfaces of both the sheet 17 and the face material 34 and the side surfaces of the reinforced gypsum board 15a so as to have an L-shape in cross section.

The mounting portion 41a of the lower frame 41 of the aluminum sash door 40 is arranged between the side surface portion 18b of the stainless steel tape 18 on the outdoor side and the outer wall material 15c, and the structural plywood 14 together with the stainless steel tape 18 is provided by the screws 32. And fixed to the lower plate 11b.

Such a wooden opening structure 1E includes an opening frame 11 installed in a square frame shape along the opening 10 and a face material 34 installed on a surface including the edge surface 11k on the opening side of the opening frame 11. It is characterized by having an aluminum sash door 40 installed on the end surface side of the face material 34. Further, the heat-foamed refractory sheet 17 is installed over the surface of the face material 34 on the opening side. A stainless steel tape 18 as a regulating means is fixed to the surface of the sheet 17 and the end surface side of the face material 34.

According to this configuration, even if the sheet 17 expands due to the heat of the fire on the side of the aluminum sash door 40, the sheet 17 is held in close contact with the edge surface 11k by the stainless tape 18, and there is no gap. The sheet 17 can protect the edge surface 11k from the high heat of fire. Further, even when heat is transferred to the mounting portion 41a of the lower frame 41 of the aluminum sash door 40, the face material 34 is only burnt within a specified time such as 60 minutes, and the structural plywood 14 inside the opening frame is also opened. The side surface and the edge surface 11k of 11 can be protected from high heat.
In addition, in the configuration including the face material 34 shown in FIG. 10, the configuration may further include the sash mounting frame 30 shown in FIG.

<Modification 5 of the embodiment>
FIG. 11 is a cross-sectional view of the wooden opening structure of the building according to the fifth modification of the embodiment of the present invention. The difference between the wooden opening structure 1F of the modified example 5 and the wooden opening structure 1E shown in FIG. 10 is that the L-shaped (cross-sectional shape) stainless tape 18 on the indoor side is U-shaped (cross-sectional shape). The stainless steel tape is 18K. The U-shape of the stainless steel tape 18K is composed of a tape upper portion 18a, a tape middle portion 18b, and a tape lower portion 18c.

That is, on the indoor side, the stainless steel tape 18K is attached by surrounding both end faces of the sheet 17 and the face material 34 with a tape upper portion 18a, a tape middle portion 18b, and a tape lower portion 18c in a U-shaped cross section. The lower portion 18c of the tape is sandwiched and fixed between the face material 34 and the upper end surface of the reinforced gypsum board 15a. The tape middle portion 18b is sandwiched and fixed between the right end surfaces of both the sheet 17 and the face material 34 and the reinforced gypsum board 15b.

Such a wooden opening structure 1F includes an opening frame 11 installed in a square frame shape along the opening 10 and a face material 34 installed on a surface including the edge surface 11k on the opening side of the opening frame 11. It is characterized by having an aluminum sash door 40 installed on the end surface side of the face material 34. Further, the heat-foamed refractory sheet 17 is installed over the surface of the face material 34 on the opening side. On the outdoor side, the stainless tape 18 as a regulating means is fixed to the surface of the sheet 17 and the end face side of the face material 34, and on the indoor side, the stainless tape 18K is attached to the surface of the sheet 17 and the face material 34. It is fixed in a U shape to the end face and the lower surface.

According to this configuration, the indoor end of the sheet 17 can be more firmly fixed with the U-shaped stainless steel tape 18K. Therefore, even if the sheet 17 is greatly expanded by the heat of the fire in the event of a fire, the sheet 17 firmly fixed by the stainless tape 18K is held in close contact with the edge surface 11k, so that the sheet 17 and the edge surface 11k There is no gap between them. Therefore, the sheet 17 can protect the edge surface 11k from the high heat of fire.

<Modified Example 6 of the Embodiment>
FIG. 12 is a cross-sectional view of a wooden opening structure of a building according to a modification 6 of the embodiment of the present invention. The first and second feature points in which the wooden opening structure 1G of the modified example 6 is different from the wooden opening structure 1F shown in FIG. 10 will be described with reference to FIG.

The first feature is that the L-shaped stainless tape 18 (FIG. 11) on the outdoor side is replaced with a U-shaped stainless tape 18K. That is, the stainless steel tape 18K is attached by surrounding the left end surface side of both the sheet 17 and the face material 34 in a U shape with the tape upper portion 18a, the tape middle portion 18b, and the tape lower portion 18c. That is, U-shaped stainless steel tape 18K is attached to both end faces of the sheet 17 and the face material 34.

The second feature is that, for example, two reinforced gypsum boards 15d and 15e are vertically arranged on the outer surface side of the structural plywood 14 vertically arranged on the lower surface of the face material 34, and are arranged on the outside thereof. The sash mounting frame 30 is arranged. Specifically, two reinforced gypsum boards 15d and 15e were vertically arranged on the outdoor side of the structural plywood 14 vertically arranged on the lower surface side of the face material 34. The upper ends of the stacked reinforced gypsum boards 15d and 15e are in contact with the lower surface of the face material 34. Of the two sheets, for example, the upper end of the outer reinforced gypsum board 15e sandwiches and fixes the lower portion 18c of the tape with the face material 34. Further, on the outdoor side of the reinforced gypsum board 15e, a sash mounting frame 30 is arranged along the square shape of the opening frame 11. The sash mounting frame 30 sandwiches and fixes the central portion 18b of the tape between the sheet 17 and the left end surface of the face material 34.

Further, the mounting portion 41a of the aluminum sash door 40 interposed between the sash mounting frame 30 and the outer wall material 15c is fixed together with the sash mounting frame 30 with screws 32A. The head of the screw 32A is sandwiched between the sash mounting frame 30 and the outer wall material 15c.

Such a wooden opening structure 1G includes an opening frame 11 installed in a square frame shape along the opening 10 and a face material 34 installed on a surface including the edge surface 11k on the opening side of the opening frame 11. It is characterized by having an aluminum sash door 40 installed on the end surface side of the face material 34. Further, the heat-foamed refractory sheet 17 is installed over the surface of the face material 34 on the opening side. The stainless tape 18K as a regulating means is fixed to the surface of the sheet 17 and the end surface and the lower surface of the face material 34 in a U shape on the outdoor side, and the stainless tape 18K is fixed to the surface of the sheet 17 on the indoor side. , It is fixed in a U shape to the end surface and the lower surface of the face material 34.

According to this configuration, the indoor and outdoor ends of the sheet 17 can be more firmly fixed with the U-shaped stainless steel tape 18K. Therefore, even if the sheet 17 is greatly expanded by the heat of the fire at the time of a fire, the sheet 17 whose both sides are firmly fixed by the stainless tape 18K is held in close contact with the edge surface 11k. As a result, since there is no gap between the sheet 17 and the edge surface 11k, the sheet 17 can protect the edge surface 11k from the high heat of fire.

<Modification 7 of the embodiment>
FIG. 13 is a perspective view showing a wooden opening provided in the wall of the building according to the modified example 7 of the embodiment of the present invention. FIG. 14 is a cross-sectional view showing a wooden opening structure 1H when the wooden opening is cut along the line A2-A2 of FIG. FIG. 15 is a cross-sectional view showing a wooden opening structure 1H when the wooden opening is cut along the line A3-A3 of FIG.

The difference between the wooden opening structure 1H of the modified example 7 shown in FIG. 13 and the wooden opening structure 1A (FIG. 2) shown in FIG. 1 is that the opening 10 is attached to the four surfaces of the edge surface 11k (FIG. 3). The heat-foamed fireproof sheet 17 was attached only to the left and right surfaces of the four surfaces, and the wooden base materials 15i and 15i were arranged on the upper and lower surfaces. However, the side portions on both sides of the sheet 17 are fixed with the stainless tape 18.

As shown in FIG. 14, in the structure in which the opening frame 11 is sandwiched between the reinforced gypsum boards 15a and 15a from both sides, the upper end surfaces of the opening frame 11 and the reinforced gypsum board 15a on the left side are flush with each other, and the entire upper end surface is reinforced. 15 g of gypsum board is arranged. Further, the reinforced gypsum board 15a on the right side of the opening frame 11 abuts on the right end surface of the reinforced gypsum board 15 g and protrudes further upward, and this protruding portion is a wooden base disposed on the reinforced gypsum board 15 g. It is in contact with the right end surface of the material 15i. The height (thickness) t1 of the reinforced gypsum board 15 g is, for example, 25 mm. The height (thickness) t10 of the wood base material 15i is, for example, 30 mm to 38 mm.

The wooden opening structure 1H shown in FIG. 15 has the same structure as the wooden opening structure 1A (FIG. 2), but uses a thin sheet 17 having a thickness t2. The thickness t2 of the sheet 17 is, for example, 1.5 mm, 3 mm, 4 mm, 5 mm, 6 mm and the like.

In the case of a wooden building, in order to make it a fireproof building, it is necessary to fireproof cover the four sides of the opening 10 which is required to have a predetermined size, 11k, with a reinforced gypsum board. In this case, for example, when a reinforced gypsum board having a thickness of t1 = 25 mm is attached to the fore-edge surface 11k without reducing the size of the opening 10, the reinforced gypsum board is arranged so as to protrude inside the fore-edge surface 11k. ..

In this arrangement state, generally, as shown in FIG. 13, the reinforced gypsum board 15b is arranged on the front and rear sides of the bearing wall around the opening 10 (edge surface 11k). The bearing wall has a bearing capacity to resist a horizontal load (force from the side) such as an earthquake or wind, and the longer the width length (bearing wall length) L1, the higher the bearing capacity. However, when the reinforced gypsum board is arranged on the four surfaces of the edge surface 11k, the bearing wall length L1 is shortened by the thickness of the reinforced gypsum board, and the proof stress is lowered.

Therefore, in the modified example 7, for example, a heat-foamed refractory sheet 17 having a thickness of t2 = 3 mm is attached to the left and right surfaces of the four edges of the edge surface 11k, and reinforced gypsum boards 15 g and 15 g having a thickness of 25 mm are arranged on the upper and lower surfaces. I tried to set it up.

According to this structure, a thin sheet 17 having a thickness of t2 = 3 mm having fire resistance is stretched on the left and right surfaces of the four sides of the edge surface 11k, so that one side is compared with the case where a reinforced gypsum board having a thickness of 25 mm is arranged. The bearing wall length L1 can be increased to 25 mm-3 mm = 22 mm. The bearing wall length L1 on both sides can be as long as 44 mm.

Therefore, the bearing capacity of the bearing wall can be improved. When two or more openings 10 are lined up on one wall surface, the bearing wall length L1 can be made longer according to the number of openings 10, so that the bearing capacity of the bearing wall can be further improved.

The heat-foamed refractory sheet 17 is expensive, but in the wooden opening structure 1H of the modified example 7, since the sheet 17 is used only on the left and right sides of the four side surfaces of the edge surface 11k, the cost can be reduced accordingly. it can.

In addition, the specific configuration can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, a case where a heat-foamed fire-resistant sheet is installed on the edge surface as a heat-expandable fire-resistant member is illustrated, but if the material satisfies a predetermined coefficient of thermal expansion and fire-resistant performance, it is not in the form of a sheet. Alternatively, a heat-expandable refractory member may be provided by forming a layer of material on the edge surface by, for example, painting or spraying. The construction method of the wooden building is not particularly limited, and the building may be constructed by any construction method such as a conventional construction method, a wooden frame construction method, and a frame wall construction method (two-by-four construction method).

1A, 1B, 1C, 1D, 1E Wooden opening structure 10 Opening 11 Opening frame 11k Edge surface 15a, 15b Reinforced gypsum board (fireproof coating material)
17 Thermal foam fireproof sheet (thermally expandable fireproof member)
18 Stainless tape (regulatory means)
19 Staple needle 20 Aluminum foil tape 22 Fire resistant glass cloth tape 30 Sash mounting frame 32 Screw 34 Face material 40 Aluminum sash door 41 Lower frame 41a Mounting part

Claims (11)

A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The regulating means is a wooden opening structure characterized in that it is a refractory tape extending along the edge of the opening. The wooden opening structure according to claim 1 , wherein the refractory tape is a refractory metal tape or a refractory glass cloth tape. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The regulating means is a wooden opening structure characterized in that it is fixed to a surface of the heat-expandable refractory member and a side surface of the wooden building intersecting the surface. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building has a wooden member installed along the edge surface of the opening and a fireproof coating material installed on the side surface of the wooden member.
The regulating means is a wooden opening structure characterized in that it is fixed to the surface of the heat-expandable refractory member and the side surface of the wood member or the side surface of the refractory coating material intersecting the surface. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building has a wooden member installed along the edge surface of the opening and a fireproof coating material installed on the side surface of the wooden member.
The heat-expandable refractory member is installed over the surface of the wood member on the opening side and the end surface of the refractory coating material on the opening side.
The regulating means is a wooden opening structure characterized in that it is fixed to a surface of the heat-expandable refractory member and a side surface of the refractory coating material intersecting the surface. In a configuration in which a plurality of the fireproof coating materials are stacked on the side of the wood member,
The heat-expandable refractory member is installed over the surface of the wood member on the opening side and the end face of the plurality of stacked refractory coating materials on the opening side.
The regulating means is fixed to the surface of the heat-expandable fireproof member and between the outermost side surface of the fireproof coating material or between the fireproof coating material among the plurality of stacked fireproof coating materials intersecting the surface. The wooden opening structure according to claim 5 , wherein the wooden opening structure is provided. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building has a wooden member installed along the edge surface of the opening, a base member installed on the outdoor side of the wooden member, and a sash fixed to the base member. And
The heat-expandable refractory member is installed over the surface of the wood member on the opening side and the end surface of the base member on the opening side.
The regulating means is a wooden opening structure characterized in that it is fixed to a surface of the heat-expandable refractory member and a side surface of the base member intersecting the surface. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building includes a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and a sash installed on the end face side of the face material. Have,
The heat-expandable refractory member is installed over the surface of the face material on the opening side.
The regulating means is a wooden opening structure characterized in that it is fixed to the surface of the heat-expandable refractory member and the end face side of the face material. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building includes a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and a sash installed on the end face side of the face material. Have,
The heat-expandable refractory member is installed over the surface of the face material on the opening side.
The regulating means is fixed to the surface of the heat-expandable refractory member and the end face side of the face material on the sash side, and the surface of the heat-expandable refractory member and the opposite of the sash of the face material. A wooden opening structure characterized in that it is fixed in a U shape to the end face and the lower surface on the side. A heat-expandable refractory member installed on the edge of the opening provided in a wooden building,
Regulatory means that regulate the edge of the heat-expandable refractory member from separating from the edge surface,
With
The wooden building includes a wooden member installed along the edge surface of the opening, a face material installed on the surface of the wooden member on the opening side, and a sash installed on the end face side of the face material. Have,
The heat-expandable refractory member is installed over the surface of the face material on the opening side.
The regulating means is fixed in a U shape to the surface of the heat-expandable refractory member and the end face and the lower surface of the face material on the sash side, and the surface of the heat-expandable refractory member and the face material. A wooden opening structure characterized in that it is fixed in a U shape to the end surface and the lower surface on the opposite side of the sash. A fireproof coating material is arranged on the upper and lower surfaces of the edge surface of the opening, and the heat-expandable fireproof member having a thickness thinner than the fireproof coating material is regulated and arranged on the left and right surfaces of the edge surface by the regulating means. The wooden opening structure according to any one of claims 1 to 10 , wherein the wooden opening structure is provided.

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