Doors and windows

Abstract

To provide building components that offer stable fire protection performance during a fire while keeping costs down. [Solution] In the sliding window 1, the lower frame 22 of the window frame 2 has an upper piece 51, a lower piece 52, an exterior piece 53, and an interior piece 54 that form a hollow portion 222A located on the interior side relative to the sash 3. Drainage holes 512 and 531 are formed in the upper piece 51 and the exterior piece 53. A heat-expandable fire-resistant material 7D is provided on the inner surface of the lower piece 52, positioned opposite the position of the drainage hole 512 in the Y-axis direction. A heat-expandable fire-resistant material 7C is provided on the inner surface of the exterior piece 53, positioned above the position of the drainage hole 531.

Description

Technical Field

[0003]

[0001] The present invention relates to furniture that exhibits fireproof performance during a fire.

Background Art

[0002] Conventionally, there is known a fireproof furniture having a frame body formed by assembling an upper frame, a lower frame, and left and right vertical frames on the four sides, and a shoji formed by assembling an upper sash, a lower sash, and left and right vertical sashes on the four sides of the inner circumference of the frame body and fitting a panel body such as glass into the inner circumference (see Patent Document 1). In this fireproof furniture, a hollow portion having at least an outdoor side wall, an upper wall, and an indoor side wall is formed in the lower frame, and drain holes (water drainage holes) are formed in the upper wall and the outdoor side wall. Therefore, a drainage path for draining condensed water or the like generated in the lower frame is formed in the space inside the hollow portion. In this fireproof furniture, as a countermeasure against the intrusion of flames through the drainage path formed by the drain holes in the upper wall and the outdoor side wall of the hollow portion during a fire, a heat expansion material (thermal expansion refractory material) is arranged at a position corresponding to the drain holes formed in the outdoor side wall on the indoor side wall, which is the indoor side wall of the hollow portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the fireproof furniture described in Patent Document 1, the heat expansion material arranged in the hollow portion is provided for the indoor side wall arranged closer to the indoor side than the outdoor side wall and is arranged at a position far from the outdoor side. Therefore, during an outdoor fire, it is difficult for the heat expansion material to increase in temperature, and thus it is difficult to rapidly generate thermal expansion due to the temperature increase and block the drain holes, making it difficult to achieve stable fireproof performance. Furthermore, simply adding more heat-expandable material to quickly seal the drainage holes makes it difficult to avoid cost increases.

[0005] The objective of this invention is to provide building components that can achieve stable fire protection performance in the event of a fire while keeping costs down. [Means for solving the problem]

[0006] The present invention relates to a joinery comprising a frame and a sliding screen disposed within the frame, wherein the frame has an upper frame, a lower frame and left and right vertical frames, and the lower frame has an upper piece, a lower piece, an outdoor piece and an indoor piece that form an indoor-side hollow portion disposed on the indoor side relative to the sliding screen, the upper piece has a first drain hole for draining water, the outdoor piece has a second drain hole for draining water from the first drain hole to the outdoor side, the inner surface of the lower piece that partitions the indoor-side hollow portion is provided with a first thermal expansion fire-resistant material positioned vertically opposite to the position of the first drain hole, and the inner surface of the outdoor piece that partitions the indoor-side hollow portion is provided with a second thermal expansion fire-resistant material positioned above the position of the second drain hole. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide building components that can achieve stable fire protection performance in the event of a fire while keeping costs down. [Brief explanation of the drawing]

[0008] [Figure 1] An interior view showing a sliding window according to an embodiment of the present invention. [Figure 2] A vertical cross-sectional view showing a sliding window according to the above embodiment. [Figure 3] A cross-sectional view showing a sliding window according to the above embodiment. [Figure 4] A vertical cross-sectional view showing the main part of the sliding window according to the above embodiment. [Figure 5]An explanatory diagram showing the main parts of the sliding window according to the above embodiment. [Figure 6] An explanatory diagram relating to the thermal expansion of the heat-expanding fire-resistant material in the main part of the sliding window according to the above embodiment. [Modes for carrying out the invention]

[0009] [Structure of this embodiment] Embodiments of the present invention will be described below with reference to the drawings. In Figures 1 to 6, the sliding window 1 (horizontal sliding window) as a building component according to this embodiment comprises a window frame 2 (frame body) and a sash 3 that can be opened to the outside relative to the window frame 2 and closed to the inside. The sash 3 is connected to the window frame 2 via a connecting mechanism 5 at its upper part. The window frame 2 has an upper frame 21, a lower frame 22, and left and right vertical frames 23. The upper frame 21 and the left and right vertical frames 23 are composite frame materials having metal frame materials 21A, 23A and resin frame materials 21B, 23B that engage with the metal frame materials 21A, 23A. The lower frame 22 is a composite frame material having a metal frame material 22A and a resin cover 22B that engages with the metal frame material 22A. The sash 3 has a frame body 30 and a facing material 40 arranged inside the frame body 30. In this embodiment, the facing material 40 is composed of a double-glazed glass panel having two glass panels. The frame body 30 has an upper frame 31, a lower frame 32, and left and right vertical frames 33. The upper frame 31, the lower frame 32, and the left and right vertical frames 33 are composite frame materials having metal frame materials 31A, 32A, 33A and resin frame materials 31B, 32B, 33B that engage with the metal frame materials 31A, 32A, 33A. In the following description, the left-right direction of the sliding window 1 is defined as the X-axis, the up-down direction of the sliding window 1 is defined as the Y-axis, and the depth direction of the sliding window 1 is defined as the Z-axis. The X, Y, and Z axes are orthogonal to each other.

[0010] The metal frame materials 31A, 32A, and 33A of the upper frame 31, lower frame 32, and vertical frame 33 are integrally extruded aluminum profiles, and as shown in Figures 2 and 3, they are formed in a hollow frame shape and have exterior-facing pieces 311, 321, and 331 that extend inward and outward in the in-plane direction. The resin frame materials 31B, 32B, and 33B of the upper frame 31, lower frame 32, and vertical frame 33 are integrally extruded resin profiles, formed from resin pieces that engage with the indoor side portions of the metal frame materials 31A, 32A, and 33A. The resin frame material 31B faces the lower part of the outdoor surface piece 311 of the metal frame material 31A in the Z-axis direction, the resin frame material 32B faces the upper part of the outdoor surface piece 321 of the metal frame material 32A in the Z-axis direction, and the resin frame material 33B faces the inner circumference of the outdoor surface piece 331 of the metal frame material 33A in the Z-axis direction. The upper frame 31, lower frame 32, and vertical frame 33 each constitute concave groove-shaped surface material holding grooves that hold the surface material 40, using metal frame materials 31A, 32A, 33A and resin frame materials 31B, 32B, 33B, respectively. On the inner circumferential surface of the metal frame members 31A, 32A, and 33A that constitute the surface material holding groove, a rectangular sheet-shaped thermally expandable fire-resistant material 10 is provided so as to be able to expand thermally between the metal frame members 31A, 32A, and 33A and the surface material 40. On the interior-facing surface of the upper part of the exterior-facing piece 311 of the metal frame material 31A of the upper frame 31, a rectangular sheet-shaped thermally expandable fire-resistant material 10 is provided that extends in the X-axis direction along the entire length of the upper frame 31 and is capable of thermal expansion inwards. On the interior-facing surface of the lower part of the exterior-facing piece 321 of the metal frame material 32A of the lower frame 32, a rectangular sheet-shaped thermally expandable fire-resistant material 10 is provided that extends in the X-axis direction along the entire length of the lower frame 32 and is capable of thermal expansion inwards. On the interior-facing surface of the exterior-facing piece 331 of the metal frame material 33A of the vertical frame 33, a rectangular sheet-shaped thermally expandable fire-resistant material 10 is provided that extends in the Y-axis direction along the entire length of the vertical frame 33 and is thermally expandable inwards.

[0011] The metal frame materials 21A and 23A of the upper frame 21 and vertical frames 23 are integrally extruded aluminum profiles. As shown in Figures 2 and 3, the metal frame material 21A of the upper frame 21 is formed in a hollow frame shape, and the metal frame materials 23A of the left and right vertical frames 23 are formed with a projection portion along the Z-axis direction as the main body portion. The metal frame materials 21A and 23A have engaging pieces 211A, 212A, 231A, and 232A that extend inward from the projection surface on the inner circumference. The engaging pieces 211A and 231A are positioned on the outside of the outdoor area than the engaging pieces 212A and 232A. The resin frame materials 21B and 23B of the upper frame 21 and vertical frame 23 are integrally extruded resin profiles, formed in a hollow frame shape, and have extended portions that extend inward in the Z-axis direction. Furthermore, the resin frame material 21B is provided with engaging portions 211B and 212B that engage with the engaging portions 211A and 212A, respectively. The metal frame material 21A of the upper frame 21 is fitted with an airtight material 6 that abuts against the upper end of the exterior facing piece 311 of the upper frame 31, and the resin frame material 21B of the upper frame 21 is provided with an airtight piece 216 that abuts against the resin frame material 31B of the upper frame 31. The metal frame material 23A of the vertical frame 23 is fitted with an airtight material 6 that abuts against the outer peripheral end of the exterior facing piece 331 of the vertical frame 33, and the resin frame material 23B of the vertical frame 23 is provided with an airtight piece 236 that abuts against the resin frame material 33B of the vertical frame 33. In the upper frame 21, a rectangular sheet-shaped thermal expansion fire-resistant material 10 is provided on the outdoor-facing surface of the engaging piece 211A, extending in the X-axis direction along the entire length of the upper frame 21.

[0012] The metal frame material 22A of the lower frame 22 is an aluminum profile formed by integral extrusion molding, and as shown in Figure 4, it has a hollow frame-shaped outdoor metal frame portion 221 and a hollow frame-shaped indoor metal frame portion 222 which is arranged on the indoor side and on the inner circumference side relative to the outdoor metal frame portion 221.

[0013] The outdoor metal frame part 221 is arranged below the lower frame 32 in the closed state, and has an outdoor finding piece part 223 along the Y-axis direction, prospecting piece parts 224 and 225 along the Z-axis direction that are continuous with the outdoor finding piece part 223, and an indoor finding piece part 226 along the Y-axis direction that is continuous with the prospecting piece parts 224 and 225. The outdoor finding piece part 223, the prospecting piece parts 224 and 225, and the indoor finding piece part 226 partition a hollow part 221A (outdoor hollow part) on the outdoor side. An airtight material 6 that abuts against the lower end part of the outdoor finding piece part 321 of the lower frame 32 is mounted on the upper end part of the outdoor finding piece part 223. The prospecting piece part 224 located on the inner peripheral side with respect to the prospecting piece part 225 faces the lower frame 32 in the closed state in the Z-axis direction. In addition, drain holes 223A and 224A are formed in the outdoor finding piece part 223 and the inner peripheral side prospecting piece part 224. The indoor metal frame part 222 is arranged on the indoor side with respect to the lower frame 32 in the closed state. The indoor metal frame part 222 has an upper piece part 51, a lower piece part 52, an outdoor piece part 53, and an indoor piece part 54 that are continuous with each other, and the upper piece part 51, the lower piece part 52, the outdoor piece part 53, and the indoor piece part 54 partition a hollow part 222A (indoor hollow part) arranged on the indoor side with respect to the lower frame 32. The outdoor end part of the upper piece part 51 is continuous with the outdoor piece part 53 on the outdoor side, and the indoor end part thereof is continuous with the indoor piece part 54 on the indoor side. A rising part 511 that rises upward is provided on the upper piece part 51, and an engaging part 511A is formed at the upper end part of the rising part 511. A drain hole 512 (first drain hole) is formed in a part of the end part of the upper piece part 51 in the X-axis direction that is on the indoor side of the rising part 511, and a notch part 513 is formed in a part of the end part of the upper piece part 51 in the X-axis direction that is on the outdoor side of the rising part 511. Further, a part of the end part of the upper piece part 51 in the X-axis direction that is on the outdoor side of the rising part 511 has an inclined part 514 that is inclined obliquely downward from the indoor side to the outdoor side. The inclined part 514 is arranged at a position facing the lower frame 32 in the Z-axis direction. A part of the vertical frame 23 is arranged in the notch part 513. The lower piece part 52 extends in the Z-axis direction continuously with the continuous part of the prospecting piece part 224 and the indoor finding piece part 226 of the outdoor metal frame part 221. The outdoor piece portion 53 extends in the Y-axis direction continuously from the projected piece portion 224 of the outdoor metal frame portion 221, and an airtight material 6 that abuts against the indoor finding surface of the resin frame material 32B of the lower frame 32 is attached to the upper end portion thereof. This outdoor piece portion 53 faces the lower frame 32 in the Z-axis direction. Further, a drain hole 531 (second drain hole) is formed at the lower portion of the outdoor piece portion 53 and at the end portion in the X-axis direction. The indoor piece portion 54 extends in the Y-axis direction continuously from the lower piece portion 52, and an engaging portion 54A is formed at the upper end portion thereof. The drain holes 512 and 531 constitute a drainage path passing through the hollow portion 222A, and are adapted to drain water such as condensed water generated on the indoor side. The water drained from the indoor metal frame portion 222 is drained to the outdoor side through the drain holes 223A and 224A of the outdoor metal frame portion 221.

[0014] Here, rectangular sheet-shaped thermal expansion refractory materials 7A, 7B, 7C, 7D, and 7E are provided on the lower frame 22. The thermal expansion refractory material 7A is disposed to extend in the X-axis direction over the entire length of the lower frame 22 on the outer surface of the inner peripheral side of the projected piece portion 224 of the outdoor metal frame portion 221, and is provided so as to be thermally expandable upward toward the lower frame 32. The thermal expansion refractory material 7B is disposed at the end portions (both end portions) which are the positions corresponding to the drain hole 531 on the outer surface of the outdoor side of the outdoor piece portion 53 of the indoor metal frame portion 222, and extends about 100 mm in the X-axis direction in this embodiment. This thermal expansion refractory material 7B is provided so as to be thermally expandable outward toward the lower portion of the outdoor finding piece portion 331 of the metal frame material 33A of the lower frame 3 and the resin frame material 33B. The thermal expansion refractory material 7C (second thermal expansion refractory material) is disposed at the upper position corresponding to the position of the drain hole 531 at the end portion in the X-axis direction of the outdoor piece portion 53 on the inner surface of the indoor side of the outdoor piece portion 53 of the indoor metal frame portion 222, and is provided so as to be thermally expandable inward toward the drain hole 512. The thermally expanding fire-resistant material 7D (first thermally expanding fire-resistant material) is positioned on the inner surface of the lower piece 52 of the interior metal frame 222, at the end of the lower piece 52 in the X-axis direction, corresponding to the position of the drain hole 512. This thermally expanding fire-resistant material 7D is positioned below the drain hole 512 in the Y-axis direction and is provided so as to be able to expand upward toward the drain hole 512. The thermally expanding fire-resistant material 7E (third thermally expanding fire-resistant material) is located on the upper outer surface of the inclined portion 514 of the upper piece 51 of the interior metal frame portion 222, at the end of the inclined portion 514 in the X-axis direction, adjacent to the notch portion 513, so as to be able to close any gap that may occur between the notch portion 513 and the vertical frame 23 when thermally expanding. This thermally expanding fire-resistant material 7E is inclined along the inclined portion 514 and is provided so as to be able to thermally expand diagonally upward toward the lower frame 32. As shown in Figures 5(A) and 5(B), the X-axis lengths of the thermally expandable fire-resistant materials 7C, 7D, and 7E are greater than the X-axis lengths of the drainage holes 512, 531 and the notches 513. In this embodiment, the X-axis lengths of the thermally expandable fire-resistant materials 7C and 7D are greater than the X-axis length of the thermally expandable fire-resistant material 7E, and the X-axis lengths of the thermally expandable fire-resistant materials 7C and 7D are equal to each other. Figure 5(A) is a plan view of the lower frame 22 seen from above, and Figure 5(B) is a front view of the lower frame 22 seen from the outside.

[0015] The resin cover 22B of the lower frame 22 engages with the engaging portions 511A and 54A of the indoor metal frame portion 222, covering the indoor metal frame portion 222 from the indoor side and inner circumference. An opening / closing device 8 equipped with an operator handle 8A for opening and closing the sash 3 is attached to the lower frame 22. The opening / closing device 8 is located at one end of the lower frame 22 in the X-axis direction, adjacent to the notch 513.

[0016] Each of the heat-expanding fire-resistant materials 10,7A~7E installed in the aforementioned sliding window 1 expands in the following way during an outdoor fire. When the window frame 2 and frame 30 rise in temperature due to an outdoor fire, the heat-expanding fire-resistant materials 10,7A~7E expand due to this temperature rise. The heat-expandable fire-resistant material 10, provided on the inner circumferential surface of the metal frame materials 31A, 32A, and 33A that constitute the surface material holding groove, closes the gap between the metal frame materials 31A, 32A, and 33A and the surface material 40 due to thermal expansion. The thermally expanding fire-resistant material 10 provided on the indoor side of the upper part of the outdoor visible piece 311 of the metal frame material 31A of the upper frame 31, and the thermally expanding fire-resistant material 10 provided on the outdoor side of the engaging piece 211A of the upper frame 21, close the space between the upper frame 31 and the upper frame 21 due to thermal expansion. The thermal expansion fire-resistant material 10 provided on the indoor side of the lower part of the outdoor visible piece 321 of the metal frame material 32A of the lower frame 32, the thermal expansion fire-resistant material 7A provided on the upper side of the visible piece 224 of the lower frame 22, and the thermal expansion fire-resistant material 7B provided on the outdoor outer surface of the outdoor piece 53 of the indoor metal frame portion 222 of the lower frame 22, all fill the space between the lower frame 32 and the lower frame 22. The heat-expanding fire-resistant material 10, provided on the indoor side of the outer periphery of the exterior-facing piece 331 of the metal frame material 33A of the vertical frame 33, closes the gap between the vertical frame 33 and the vertical frame 23. As shown in Figure 6, the thermally expanding fire-resistant material 7C (second thermally expanding fire-resistant material) provided on the inner surface of the outer piece 53 of the indoor metal frame 222 and the thermally expanding fire-resistant material 7D (first thermally expanding fire-resistant material) provided on the inner surface of the inner circumference of the lower piece 52 of the indoor metal frame 222 expand in directions that intersect each other. This thermal expansion causes the thermally expanding fire-resistant materials 7C and 7D to move closer to each other, come into contact, and push against each other, quickly sealing the drainage holes 512 and 531 (second drainage holes). In addition, the thermally expanding fire-resistant materials 7C and 7D also seal the gap between the upper piece 51 and the vertical frame 23 in the notch 513 from the hollow section 222A side. The thermally expanding fire-resistant material 7E (third thermally expanding fire-resistant material) provided on the upper outer surface of the inclined portion 514 of the upper piece 51 of the interior metal frame portion 222 expands due to thermal expansion, sealing the gap between the lower frame 32 and the interior metal frame portion 222 around the opening / closing device 8 and its surroundings, and sealing the gap between the vertical frame 23 in the notch portion 513 from the outside relative to the hollow portion 222A. In this way, in the casement window 1, each part is sealed by the respective heat-expanding fire-resistant materials 10,7A~7E in the event of an outdoor fire, thereby separating the space between the inside and outside.

[0017] With this sliding window 1, the water drain holes 512 and 531 can be quickly sealed even when the amount of thermal expansion of the heat-expanding fire-resistant materials 7C and 7D is small during the thermal expansion process, thus providing stable fire protection performance. Furthermore, in the sliding window 1, the heat-expanding fire-resistant materials 7C and 7D are thermally expanded so that they come into contact with each other in intersecting directions, which reduces the amount of heat-expanding fire-resistant materials 7C and 7D required to quickly seal the water drain holes 512 and 531, thereby suppressing cost increases. Furthermore, the thermal expansion of the heat-expandable fire-resistant material 7E can further reduce the risk of hot air escaping between the exterior and interior sides during a fire. In addition, by providing the upper piece 51, the space for arranging accessories such as the opening and closing device 8 installed on the lower frame 22 can be expanded, and the thermal expansion of the heat-expandable fire-resistant material 7E can also seal the gaps that occur at the location where the opening and closing device for opening and closing the sash 3 is installed, further reducing the risk of hot air escaping through these gaps during a fire due to the thermal expansion of the heat-expandable fire-resistant material 7E.

[0018] [Differentiation] In the above embodiment, a thermal expansion fire-resistant material 7E is provided as a third thermal expansion fire-resistant material. However, the embodiment is not limited to this, and if sufficient fire protection performance can be obtained without the thermal expansion fire-resistant material 7E, the configuration of the thermal expansion fire-resistant material 7E may be omitted. In the above embodiment, the frame 30 of the window frame 2 and the shoji screen 3 are made of an aluminum-resin composite profile, but are not limited to this and may be made of a metal material such as aluminum. In the above embodiment, a sliding window 1 was described as the joinery, but other types of windows, such as opening windows that open to the outside, may also be used to constitute the joinery.

[0019] [Summary of the invention] (1) The joinery of the present invention comprises a frame and a sliding screen disposed within the frame, wherein the frame has an upper frame, a lower frame and left and right vertical frames, the lower frame has an upper piece, a lower piece, an outdoor piece and an indoor piece that form an indoor hollow space disposed on the indoor side relative to the sliding screen, the upper piece has a first drain hole for draining water, the outdoor piece has a second drain hole for draining water from the first drain hole to the outdoor side, the inner surface of the lower piece that partitions the indoor hollow space is provided with a first thermal expansion fire-resistant material disposed at a position opposite to the position of the first drain hole in the vertical direction, and the inner surface of the outdoor piece that partitions the indoor hollow space is provided with a second thermal expansion fire-resistant material disposed at a position above the position of the second drain hole. According to the building component of the present invention, in the event of an outdoor fire, the first and second thermal expansion fire-resistant materials expand due to the temperature rise of the lower and outdoor sections, which are located on the outdoor side of the indoor section. As a result of this thermal expansion, the first and second thermal expansion fire-resistant materials move closer to each other in intersecting directions and come into contact with each other, sealing the second drain hole. Therefore, the second drain hole can be quickly sealed even when the amount of thermal expansion in both the first and second thermal expansion fire-resistant materials is small. Furthermore, the first thermal expansion fire-resistant material expands upward toward the first drain hole as it expands with the thermal expansion of the second thermal expansion fire-resistant material, thereby quickly sealing the first drain hole. Consequently, the first and second drain holes can be quickly sealed by the first and second thermal expansion fire-resistant materials arranged as described above, thereby providing stable fire protection. Furthermore, in the building components of the present invention, the first thermal expansion fire-resistant material and the second thermal expansion fire-resistant material are thermally expanded so that they come into contact with each other in intersecting directions. This reduces the amount of thermal expansion fire-resistant material required to quickly seal the first and second drainage holes, thereby suppressing cost increases. Furthermore, the first thermal expansion fire-resistant material and the second thermal expansion fire-resistant material only need to be provided at positions corresponding to at least the first drainage hole and the second drainage hole, respectively. (2) In the joinery of the present invention, the shoji screen has a frame body composed of an upper frame, a lower frame, and left and right vertical frames, and a surface material disposed within the frame body, and the upper piece has an inclined portion that slopes diagonally downward from the interior side to the exterior side at a position facing the lower frame in the depth direction, and a third thermal expansion fire-resistant material may be provided on the outer surface of the inclined portion. With this configuration, the thermal expansion of the third thermal expansion fire-resistant material can further reduce the risk of hot air passing between the exterior and interior sides during a fire. In addition, by providing the upper piece, the space for arranging accessories installed on the lower frame can be expanded, and the thermal expansion of the third thermal expansion fire-resistant material can also seal any gaps that occur around the location of the opening and closing device for opening and closing the shoji screen. (3) In the joinery of the present invention, the upper piece has a notch in which a part of the vertical frame is arranged, and the third thermal expansion fire-resistant material may be provided at a position adjacent to the notch so as to close the gap between the notch and the vertical frame when it expands due to heat. With this configuration, the risk of hot air escaping through the gap due to the thermal expansion of the third thermal expansion fire-resistant material during a fire can be further reduced. [Explanation of symbols]

[0020] 1...Casement window (joinery), 10...Heat-expanding fire-resistant material, 2...Window frame (frame body), 21...Upper frame, 211A...Engaging piece, 211B...Engaging part, 212A...Engaging piece, 212B...Engaging part, 216...Airtight piece, 21A...Metal frame material, 21B...Resin frame material, 22...Lower frame, 221...Exterior metal frame part, 221A...Hollow part, 222...Interior metal frame part, 222A... Hollow section, 223...Exterior facing section, 223A...Drainage hole, 224...Interior facing section, 224A...Drainage hole, 225...Interior facing section, 226...Interior facing section, 22A...Metal frame material, 22B...Resin cover, 23...Vertical frame, 231A...Engaging section, 232A...Engaging section, 236...Airtight section, 23A...Metal frame material, 23B...Resin frame material, 3...Sash, 30 ...frame body, 31...upper frame, 311...exterior visible piece, 31A...metal frame material, 31B...resin frame material, 32...lower frame, 321...exterior visible piece, 32A...metal frame material, 32B...resin frame material, 33...vertical frame, 331...exterior visible piece, 33A...metal frame material, 33B...resin frame material, 40...face material, 5...connecting mechanism, 51...upper piece, 511...rising piece, 511 A...Engagement part, 512...Drain hole, 513...Notch part, 514...Slope part, 52...Lower piece part, 53...Outdoor piece part, 531...Water drain hole, 54...Indoor piece part, 54A...Engagement part, 6...Air Dense wood, 7A...Thermal expansion refractory material, 7B...Thermal expansion refractory material, 7C...Thermal expansion refractory material, 7D...Thermal expansion refractory material, 7E...Thermal expansion refractory material, 8...Switching device, 8A...Operator handle.

Claims

1. A joinery comprising a frame and a sliding screen placed within the frame, The frame has an upper frame, a lower frame, and left and right vertical frames. The lower frame has an upper piece, a lower piece, an exterior piece, and an interior piece that form an interior hollow portion positioned on the interior side relative to the shoji screen. The upper piece has a first drain hole for draining water. The outdoor section is provided with a second drain hole to drain water from the first drain hole to the outside. On the inner surface of the lower piece that partitions the hollow portion on the indoor side, a first thermal expansion fire-resistant material is provided, positioned at a location opposite to the position of the first drain hole in the vertical direction. A second thermal expansion fire-resistant material is provided on the inner surface of the exterior piece that partitions the interior hollow portion, positioned above the location of the second drain hole. A type of joinery characterized by its features.

2. In the joinery described in claim 1, The aforementioned shoji screen has a frame body composed of an upper frame, a lower frame, and left and right vertical frames, and a facing material placed inside the frame body. The upper portion has an inclined portion that slopes diagonally downward from the indoor side to the outdoor side at a position facing the lower frame in the depth direction, and a third thermal expansion fire-resistant material is provided on the outer surface of the inclined portion. A type of joinery characterized by its features.

3. In the joinery described in claim 2, The upper piece has a notch formed in which a part of the vertical frame is positioned. The third thermally expanding fire-resistant material is provided at a position adjacent to the notch so as to close the gap between the notch and the vertical frame when it expands due to heat. A type of joinery characterized by its features.

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