Corner mullion

Abstract

To provide a compact corner mullion having flame blocking performance.SOLUTION: A corner mullion 20 includes: a first half 25 shaped like a vertically split tube, attached to a horizontal end of a first panel 110 made of a fire-resistant sash or glass; a second half 26 shaped like a vertically split tube, attached to a horizontal end of a second panel 210 made of a fire-resistant sash or glass, disposed perpendicular to the first panel and assembled with the first half to form a tube; a first fire-resistant material 51 attached to the first half so as to extend vertically at an inside of the tube; and a second fire-resistant material 52 attached to the second half so as to extend vertically at the inside of the tube and joined to the first fire-resistant material, the corner mullion being disposed at an inside corner between the first and second panels, with the first and second fire-resistant materials provided on the inside of the tube along a portion of the tube facing an indoor side.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a corner upright.

Background Art

[0002] When a plurality of sashes are arranged side by side and installed in an opening of a building frame, an upright as a crossbar is provided between these windows. Patent Document 1 discloses a technique of making the upright a fire-resistant structure. Patent Document 2 discloses a technique in which an opening is formed at a corner of a building frame, two sashes are arranged at right angles and installed in the opening, and a corner upright is provided at a corner formed by these sashes as an inner corner.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the fire resistance performance of the corner upright is required so that the flame during a fire outdoors or indoors does not pass through the corner upright. When the fire-resistant structure of Patent Document 1 is applied to the corner upright, even if the fire resistance performance of the corner upright is high, its size becomes large, and the manufacturing and installation costs and labor of the corner upright increase. In addition, when the corner upright is large, the designability of the exterior or interior appearance of the building or sash deteriorates.

[0005] Therefore, an object of the present invention is to provide a compact corner upright having a flame blocking performance.

Means for Solving the Problems

[0006] According to one aspect of the present invention, in order to solve the above problems, A first half body having a shape in which a cylinder is vertically divided, provided at a horizontal end of a first panel made of a shoji or glass having fire resistance; A second half body having a shape in which the cylinder is vertically divided, provided at a horizontal end of a second panel made of a shoji or glass having fire resistance, arranged at a right angle to the first panel, and assembled to the first half body so as to form the cylinder; A first refractory attached to the first half body so as to be inside the cylinder and extending vertically; A second refractory attached to the second half body so as to be inside the cylinder, extending vertically, and joined to the first refractory; Comprising: A corner upright provided in a corner arrangement between the first panel and the second panel, There is provided a corner upright in which the first refractory and the second refractory are provided inside the cylinder along a portion of the cylinder facing the inside of the room.

Advantages of the Invention

[0007] According to one aspect of the present invention, the first and second refractory materials are housed inside a cylinder formed by assembling the second half body to the first half body. Therefore, it is difficult for flames during a fire outdoors or indoors to pass through the corner upright, and the corner upright is compact. The joining of the second refractory to the first refractory contributes to an improvement in the flame blocking performance and design of the corner upright.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

MODE FOR CARRYING OUT THE INVENTION

[0009] [First Embodiment] Hereinafter, the first embodiment will be described with reference to the drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Since the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the illustrations in the drawings.

[0010] [Building Frame and Corner Sash] FIG. 1 is an internal view schematically showing a corner sash 10 as a panel structure attached to a building frame 1. This corner sash 10 is mounted and installed in an opening 2 formed at a corner of the building frame 1.

[0011] Here, the first outer wall 5 and the second outer wall 6 constitute the building body 1. When the outer walls 5 and 6 are butted at a right angle, these outer walls 5 and 6 form an inside corner indoors and an outside corner outdoors. The opening 2 is formed in the outer walls 5 and 6 and at their corners. The portion 3 formed in the first outer wall 5 of the opening 2 is rectangular, and the portion 4 formed in the second outer wall 6 is rectangular. The portion 3 is referred to as the first semi-opening 3, and the portion 4 is referred to as the second semi-opening 4. In FIG. 1, arrows indicating the first finding direction, the first prospecting direction, the second finding direction, and the second prospecting direction are shown. The first finding direction means a direction parallel to the first outer wall 5, and the first prospecting direction means a direction perpendicular to the first finding direction and the thickness direction of the first outer wall 5. The second finding direction means a direction parallel to the second outer wall 6, and the second prospecting direction means a direction perpendicular to the second finding direction and the thickness direction of the second outer wall 6. The first finding direction and the second prospecting direction are parallel to each other, and the first prospecting direction and the second finding direction are parallel to each other. The finding direction is also referred to as the in-plane direction, and the prospecting direction is also referred to as the out-of-plane direction.

[0012] The corner sash 10 includes a first sash 100, a second sash 200, a third sash 300, a mullion 120, and a corner mullion 20. The corner sash 10 is a continuous window sash in which the first sash 100, the second sash 200, and the third sash 300 are connected in series. The first to third sashes 100, 200, and 300 all have fireproof performance.

[0013] [First sash] The first sash 100 is a flush window formed in a rectangular shape. The first sash 100 includes a sash frame 101 in a rectangular frame shape and a window body 110 as the first panel. The sash frame 101 has left and right vertical frames 102, 103 extending vertically in parallel to each other, and upper and lower horizontal frames 104, 105 extending horizontally in parallel to each other. The sash frame 101 is assembled in a frame shape from these vertical frames 102, 103 and horizontal frames 104, 105. The vertical frame 103 is one end portion of the first sash 100 in the horizontal direction (the end portion proximal to the corner upright 20), and the vertical frame 102 is the other end portion of the first sash 100 in the horizontal direction (the end portion distal to the corner upright 20).

[0014] FIG. 2 is a cross-sectional view of the periphery of the corner upright 20 of the corner sash 10. FIG. 3 is a cross-sectional view showing the corner upright 20 in a disassembled state. As shown in FIG. 2, the sash frame 101 has an indoor-side flat plate portion 106 facing the indoor side, which is composed of a strip-shaped flat plate parallel to the first finding direction and long in the vertical direction, and an outdoor-side flat plate portion 107 facing the outdoor side, which is composed of a strip-shaped flat plate parallel to the first finding direction and long in the vertical direction. In FIG. 2, only the indoor-side flat plate portion 106 and the outdoor-side flat plate portion 107 in the vertical frame 103 are shown, but the indoor-side flat plate portion 106 and the outdoor-side flat plate portion 107 are provided for each of the vertical frame 102 and the horizontal frames 104, 105, and are integrally connected at each corner.

[0015] The window body 110 has a rectangular glass 111 made of a single-layer glass plate or a multi-layer glass plate, and a frame-shaped muntin 112 that supports the glass 111 so as to surround it from all four sides, and constitutes a shoji. The glass 111 uses wired glass or fireproof glass and has fireproof performance.

[0016] The muntin 112 has left and right vertical muntins extending vertically in parallel to each other, and upper and lower horizontal muntins extending horizontally in parallel to each other (only one vertical muntin is shown in FIG. 2). The muntin 112 is integrated by combining these vertical muntins and horizontal muntins in a frame shape. As shown in FIG. 2, the frame 112 includes an indoor member 113 having an indoor-side flat plate portion 113a that is parallel to the first finding direction and faces the indoor side, and an outdoor member 114 having an outdoor-side flat plate portion 114a that is parallel to the first finding direction and faces the outdoor side. The indoor member 113 and the outdoor member 114 are arranged to face each other along the first prospective direction, and are integrally connected in a state where the internally hollow convex portions 113b and 114b protruding toward each other are butted against each other. Further, the butting surfaces of the convex portions 113b and 114b do not directly contact each other, and two strip-shaped heat insulating materials 115 and 115 made of resin are inserted therebetween. The two heat insulating materials 115 and 115 are arranged so as to doubly surround the glass 111 from the inside and outside in all directions. Note that only one heat insulating material 115 may be arranged, or one heat insulating material having a double structure may be arranged. Since the frame 112 has internally hollow convex portions 113b and 114b and heat insulating materials 115 and 115 are inserted between them, it has high heat insulating properties between the indoor member 113 and the outdoor member 114. Therefore, the heat on the indoor side is difficult to escape to the outside, and the cold air outside is also difficult to transmit to the inside. These heat insulating materials 115 are resin materials with high heat insulating properties, and are formed of, for example, polyamide resin.

[0017] In a state where the indoor member 113 and the outdoor member 114 are integrally connected, the inner edge portion of the frame 112 on the glass 111 side has an open cross-sectional shape. And the outer edge portion of the glass 111 equipped with the glazing channel 111a is inserted into the opened inner edge portion of the frame 112. The glazing channel 111a is formed of a resin material with high heat resistance. Thereby, inside the frame 112, the side closer to the glass 111 than the convex portions 113b and 114b is a sealed space. Inside this space, a glass holding clip 116 having a U-shaped cross section is fixedly installed. This glass holding clip 116 is made of metal and has flame retardancy. Its opening has the outer edge of the glass 111 inserted loosely. This glass holding clip 116 can hold the glass 111 so that it does not fall off from the first sash 100 even when the first sash 100 is exposed to high temperature, such as in a fire, and each component around the glass 111 partially softens or melts.

[0018] Also, a pair of heat-expandable materials 117, 117 are disposed by sticking at one end and the other end in the inner bottom portion of the glass holding clip 116 in one direction and the other direction of the first prospective direction. Each heat-expandable material 117 is provided over the entire length of the stile 112 (the entire longitudinal length if it is a vertical stile, and the entire transverse length if it is a horizontal stile). When this heat-expandable material 117 is heated at a high temperature (for example, 200 °C or higher), it foams and its volume increases by several times to several tens of times. Therefore, when the first sash 100 is exposed to high temperature, such as in a fire, the heat-expandable material 117 foams and fills the stile 112, and it is possible to suppress the passage of flames and smoke from indoors to outdoors or from outdoors to indoors. The heat-expandable material 117 is, for example, a heat-expanded refractory material manufactured by Sekisui Chemical Co., Ltd. under the product name "Fiblock". Note that the arrangement of the above-described heat-expandable material 117 is an example, and other arrangements and lengths that can maintain the flame shielding property between the stile 112 and the glass 111 may also be used.

[0019] The end of the indoor side flat plate portion 113a of the stile 112 on the side opposite to the glass 111 (the direction away from the glass 111) is located on the outdoor side of the indoor side flat plate portion 106 of the above-described sash frame 101 and is closely opposed to the indoor side flat plate portion 106 in the first prospective direction. And a sealing material 113c for maintaining airtightness between them is inserted between the end of the indoor side flat plate portion 113a on the side opposite to the glass 111 and the indoor side flat plate portion 106. This sealing material 113c is held by the indoor side flat plate portion 106.

[0020] The end of the outdoor flat part 114a of the frame 112 on the side opposite to the anti-glass 111 is located on the outdoor side of the outdoor flat part 107 of the sash frame 101 described above, and is in close proximity to the outdoor flat part 107 in the first prospective direction. And a sealing material 114c for maintaining airtightness between them is inserted between the end of the outdoor flat part 114a on the side opposite to the anti-glass 111 and the outdoor flat part 107. This sealing material 114c is held by the outdoor flat part 114a.

[0021] The sealing materials 113c and 114c are formed of, for example, EPDM resin or soft polyvinyl chloride resin. The area between the indoor flat part 106 and the outdoor flat part 107 of the sash frame 101 is a sealed space formed by the frame 112 and the sealing materials 113c and 114c. And two heat-expandable materials 106a are arranged by sticking on the glass 111 side and the anti-glass 111 side of the inner side (outdoor flat part 107 side) surface of the indoor flat part 106. Each heat-expandable material 106a is provided over the entire length of the indoor flat part 106 (the entire longitudinal length for the vertical frames 102 and 103, and the entire transverse length for the horizontal frames 104 and 105). Also, a heat-expandable material 113d is arranged by sticking so as to straddle each surface of the convex parts 113b and 114b on the side opposite to the anti-glass 111. The heat-expandable material 113d is provided over the entire length of the frame 112 (the entire longitudinal length for a vertical frame and the entire transverse length for a horizontal frame). Note that the heat-expandable materials 106a and 113d may be provided except for the locations where they interfere with components such as the reinforcing member 118 described later when components are provided on the frame or the frame.

[0022] Each of the heat-expandable materials 106a and 113d is of the same quality as the heat-expandable material 117 described above. Therefore, when the first sash 100 is exposed to high temperature, for example, in a fire, the heat-expandable materials 106a and 113d expand and fill the area between the indoor flat part 106 and the outdoor flat part 107, and can suppress the passage of flames and smoke from indoors to outdoors or from outdoors to indoors. Note that the arrangement of the above-described heat-expandable materials 106a and 113d is merely an example, and other arrangements and lengths that can maintain the heat shielding property of the region between the indoor flat plate portion 106 and the outdoor flat plate portion 107 may also be used.

[0023] The indoor flat plate portion 106 and the outdoor flat plate portion 107 that constitute the vertical frame 103 of the window frame 101 are raised from the corner upright 20 and are integrally connected to the corner upright 20. And, in the region between the indoor flat plate portion 106 and the outdoor flat plate portion 107, a reinforcing member 118 suspended between the corner upright 20 and the indoor flat plate portion 106 is provided.

[0024] FIG. 4 is a view of the reinforcing member 118 as seen from the glass 111 side. As shown in FIG. 4, the reinforcing member 118 has a first flat portion 118a that abuts against the glass 111 side surface of the corner upright 20, a second flat portion 118b that is erected at a right angle from the first flat portion 118a, a third flat portion 118c that is bent at a right angle from the second flat portion 118b, and a fourth flat portion 118d that is bent at a right angle from the third flat portion 118c and abuts against the inner surface of the indoor flat plate portion 106. These first to fourth flat portions 118a to 118d are integrally formed by bending a single fire-resistant metal flat plate, for example, a flat plate such as stainless steel, steel, or aluminum alloy. Both the first flat portion 118a and the fourth flat portion 118d have insertion portions for fastening members such as screws and bolts, and are connected to the other side by the fastening members. The third flat portion 118c has a shape in which the second flat portion 118b side is bifurcated, and the second flat portion 118b is connected to the first flat portion 118a in a bifurcated state.

[0025] The total length of the reinforcing member 118 in the vertical direction may be equal to the total length of the indoor flat plate portion 106. Also, the indoor flat plate portion 106 may be reinforced by a single reinforcing member 118 having a shorter total length in the vertical direction. Alternatively, a plurality of reinforcing members 118 having a shorter total length in the vertical direction may be arranged in the vertical direction to reinforce the indoor flat plate portion 106.

[0026] Thus, the reinforcing member 118 can reinforce the indoor flat plate portion 106 from the inside so as to support it from the corner upright portion 20. Therefore, even when the corner sash 10 is exposed to high temperature from the indoor side due to, for example, a fire or the like and the support strength of the indoor flat plate portion 106 decreases, the reinforcing member 118 is disposed inside the region between the indoor flat plate portion 106 and the outdoor flat plate portion 107 and is made of a fire-resistant material. Therefore, a decrease in the support strength can be suppressed, and the window body 110 can be supported with high durability against high temperature. In particular, since the heat-expandable materials 106a and 113d are disposed in the region between the indoor flat plate portion 106 and the outdoor flat plate portion 107, the region is filled with the heat-expandable materials 106a and 113d that have expanded, and the reinforcing member 118 is protected from high temperature. Therefore, the window body 110 can be supported with even higher durability.

[0027] Further, since each of the first to fourth flat plate portions 118a to 118d of the reinforcing member 118 is bent, and further, the second flat plate portion 118b and the third flat plate portion 118c are bifurcated, flexibility can be imparted to the member from one end portion to the other end portion. Even when the sash frame 101 and the window body 110 are thermally expanded or deformed at high temperature, the window body 110 can be supported with even higher durability following the deformation.

[0028] The first sash 100 ensures high fire resistance by using a resin material with high heat resistance for the aforementioned grating channel 111a, using glass 111 having fireproof performance, installing a glass holding clip 116, supporting by the reinforcing member 118, and disposing the heat-expandable materials 106a, 113d, and 117 at various locations. Therefore, the window body 110 of the first sash 100 functions as a first panel having fireproof performance. Note that not all of the various examples for improving the above fire resistance are required, and it may be sufficient to include only a part of the above examples.

[0029] The window main body 110 as the first panel is a shoji screen, which is fitted into the sash frame 101 and fixed to the sash frame 101, that is, a so-called fixed window. Note that the first sash 100 may be an openable window such as a vertically sliding window, a horizontally sliding window, a hinged window, an outward-opening casement window, an inward-opening casement window, a projecting window, a louver window, and an awning window. In this case, the window main body 110 is opened and closed manually or automatically. Also, regardless of which of the above various windows the first sash 100 is, it is preferable to include one or all of various configurations for ensuring the above-described high fireproof performance.

[0030] [Second Sash] The second sash 200 has a structure that is symmetric with respect to a plane including the ridge line m of the corner formed by the outer walls 5 and 6 and bisecting the angle of the corner of the outer walls 5 and 6 with respect to the first sash 100. Therefore, regarding the configuration of the second sash 200, all the third-digit numbers of the corresponding configuration codes of the first sash 100 are changed from "1" to "2" and described in FIGS. 2 and 3. Also, regarding each configuration of the second sash 200, since all can be understood from the description of the first sash 100 regarding the structure and characteristics, detailed descriptions are omitted to avoid redundant duplication. Also, all the descriptions written about the first sash 100 can also be applied to the second sash 200.

[0031] As described above, the first sash 100 and the second sash 200 are arranged at right angles. The vertical frame 103 of the first sash 100 and the vertical frame 203 of the second sash 200 are arranged close to each other and provided parallel to each other. The vertical frame 102 of the first sash 100 and the vertical frame 202 of the second sash 200 are arranged apart from each other and provided parallel to each other. The upper horizontal frames 104 and 204 of the sashes 100 and 200 are arranged at right angles, and the lower horizontal frames 105 and 205 are arranged at right angles.

[0032] [Third Sash] The third sash 300 is an openable window formed in a rectangular shape, specifically a vertically sliding window. The third sash 300 includes a rectangular sash frame 301 as a shoji and a window body 310. The sash frame 301 has left and right vertical frames 302 and 303 extending vertically in parallel to each other, and upper and lower horizontal frames 304 and 305 extending horizontally in parallel to each other. The sash frame 301 is assembled in a frame shape from these vertical frames 302 and 303 and horizontal frames 304 and 305.

[0033] The window body 310 has a rectangular glass made of a single-layer glass plate or a multi-layer glass plate, and a housing-shaped frame (not shown) that supports the glass so as to surround it on all four sides. The glass plate uses wire glass or fireproof glass and has fireproof performance. The window body 310 is built into the sash frame 301 and is attached to the sash frame 301 so as to be openable via a vertically sliding opening / closing mechanism. Note that the third sash 300 may be an openable window other than a vertically sliding window, such as a horizontally sliding window, a hinged window, an outward-opening window, an inward-opening window, a projecting window, a louver window, or an awning window. Further, the third sash 300 may be a fixed window. Also, the third sash 300 is also equipped with the sash frame 301 and the frame having the same examples for improving fireproof performance as those of the first sash 100. Therefore, the window body of the third sash 300 also functions as a third panel having fireproof performance.

[0034] [Corner erection and sash arrangement] The corner upright 20 is disposed at the angle formed by the first and second sashes 100 and 200 and extends vertically. The corner upright 20 is disposed along the vertical frames 103 and 203 of the sashes 100 and 200 and is integrated with these vertical frames 103 and 203. The corner upright 20 and the upper horizontal frame 104 of the first sash 100 are disposed at a right angle, and the corner upright 20 and the lower horizontal frame 105 are disposed at a right angle. The corner upright 20 and the upper horizontal frame 204 of the second sash 200 are disposed at a right angle, and the corner upright 20 and the lower horizontal frame 205 are disposed at a right angle. Among the vertical frames 102 and 103 of the first sash 100, the vertical frame 103 is proximal to the corner upright 20, and the vertical frame 102 is distal from the corner upright 20. Among the vertical frames 202 and 203 of the second sash 200, the vertical frame 203 is proximal to the corner upright 20, and the vertical frame 202 is distal from the corner upright 20.

[0035] The second and third sashes 200 and 300 face the same direction and are arranged side by side horizontally with the upright 120 placed therebetween. The ends of the upper horizontal frames 204 and 304 of the sashes 200 and 300 are butted against each other with the upper end of the upright 120 placed therebetween, and the horizontal frames 204 and 304 are aligned horizontally in a straight line. The lower horizontal frames 205 and 305 of the sashes 200 and 300 are butted against each other with the lower end of the upright 120 placed therebetween, and the horizontal frames 205 and 305 are aligned horizontally in a straight line. The upright 120 extends vertically between the vertical frame 203 of the second sash 200 and the vertical frame 302 of the third sash 300. The upright 120 is integrated with the vertical frames 202 and 303 of the sashes 200 and 300. The upright 120 has fire resistance.

[0036] The corner sash 10 formed by assembling the first sash 100 and the second and third sashes 200 and 300 at a right angle is mounted on the opening 2 as follows.

[0037] The first sash 100 is directed in the first prospective direction and fitted into the first semi-opening 3. The first sash 100 being directed in the first prospective direction means that the normal line of the window body 110 of the first sash 100 is parallel to the first prospective direction.

[0038] The upper horizontal frame 104 of the first sash 100 is fixed to the edge along the upper edge of the first semi-opening 3. The lower horizontal frame 105 of the first sash 100 is fixed to the edge along the lower edge of the first semi-opening 3. The vertical frame 102 of the first sash 100 is fixed to the edge along the vertical edge of the first semi-opening 3.

[0039] The second and third sashes 200, 300 are directed in the second prospective direction and are fitted into the second semi-opening 4. The upper horizontal frames 204, 304 of the sashes 200, 300 are fixed to the edge along the upper edge of the second semi-opening 4. The lower horizontal frames 205, 305 of the sashes 200, 300 are fixed to the edge along the lower edge of the second semi-opening 4. The vertical frame 302 of the third sash 300 is fixed to the edge along the vertical edge of the second semi-opening 4.

[0040] The corner upright 20 is disposed at the boundary between the first semi-opening 3 and the second semi-opening 4. The corner upright 20 is provided indoors along the extension line where the ridge line m of the corner formed by the outer walls 5, 6 extends inside the opening 2.

[0041] By attaching the corner sash 10 to the opening 2 as described above, the first and second sashes 100, 200 form an exposed corner indoors and an inward corner outdoors.

[0042] [Corner Upright] The corner upright 20 is an internally hollow cylindrical body with a substantially square horizontal cross-sectional shape. The corner upright 20 has a first plate 21 and a third plate 23 parallel to the vertical direction and the first prospective direction, and a second plate 22 and a fourth plate 24 parallel to the vertical direction and the second prospective direction. Furthermore, the corner upright 20 has mounting edges 27, 28, refractory materials 51, 52, refractory heat insulation materials 55, stud walls 61, 66, and decorative materials 29. On the first plate 21 of the corner upright 20, the aforementioned first sash 100 is disposed, and on the second plate 22, the aforementioned second sash 200 is disposed. Also, the third plate 23 and the fourth plate 24 are arranged to face the indoor side as a whole.

[0043] [Corner Upright: Plate] The first to fourth plates 21 to 24 are all made of an aluminum alloy. The first plate 21 is configured by integrating an indoor plate 41 whose surface (the surface exposed outside the cylinder of the corner upright 20) faces the indoor side and an outdoor plate 42 whose surface faces the outdoor side. The indoor plate 41 and the outdoor plate 42 are arranged adjacent to each other on the indoor side and the outdoor side on the same plane parallel to the vertical direction and the first prospective direction. At these boundary portions, support walls 411 and 421 facing each other are erected toward the inside of the upright. And the support walls 411 and 421 do not directly contact each other, and two strip-shaped heat insulating materials 541 and 542 made of resin are inserted therebetween. One heat insulating material 541 is arranged along the surface near the surface of the first plate 21, and the other heat insulating material 542 is arranged inside the one heat insulating material 541. These heat insulating materials 541 and 542 are arranged over the entire length of the corner upright 20. Note that only one heat insulating material may be arranged, or one heat insulating material having a double structure may be arranged. Since the heat insulating materials 541 and 542 are inserted between the indoor plate 41 and the outdoor plate 42, they have high heat insulating properties between the indoor plate 41 and the outdoor plate 42. For this reason, the heat on the indoor side hardly escapes to the outside, and the cold air outside hardly reaches the inside.

[0044] Near the outdoor side end portion on the surface of the indoor plate 41, the indoor side flat plate portion 106 of the aforementioned vertical frame 103 is erected along the first finding direction. Strictly speaking, the side on the indoor side of the indoor side flat plate portion 106 on the surface of the indoor plate 41 is in a state of being exposed to the indoor side. At the middle part in the first expected direction on the surface of the outdoor plate 42, the outdoor flat plate portion 107 of the vertical frame 103 described above is erected along the first finding direction. Strictly speaking, the side outside the outdoor flat plate portion 107 on the surface of the outdoor plate 42 is in a state of being exposed to the outdoors.

[0045] The fourth plate 24 extends laterally from the indoor-side end of the indoor plate 41 of the first plate 21 toward the side opposite to the vertical frame 103 (the side opposite to the vertical frame 103 with respect to the first plate 21). The fourth plate 24 is formed in a single plate shape across the entire width of the square tube of the corner upright 20. The entire surface of the fourth plate 24 faces indoors, but most of it is covered by a decorative material 29 described later.

[0046] The indoor plate 41 of the first plate 21 and the fourth plate 24 are integrally formed with each other. Therefore, the first plate 21 and the fourth plate 24 are arranged at a right angle and form an L-shaped in a horizontal cross-section. The integrated first plate 21 and fourth plate 24 is a first half body 25 having a shape obtained by vertically splitting the square tube. The first half body 25 is provided integrally with the vertical frame 103 of the first sash 100 at the horizontal end of the first sash 100.

[0047] The second plate 22 is configured by integrating an indoor plate 43 whose surface faces indoors and an outdoor plate 44 whose surface faces outdoors. The indoor plate 43 and the outdoor plate 44 are arranged adjacent to each other on the indoor side and the outdoor side on the same plane parallel to the vertical direction and the second expected direction. At the boundary between them, support walls 431 and 441 facing each other are erected toward the inner side of the upright. And the support walls 431 and 441 do not directly contact each other, and two strip-shaped heat insulating materials 543 and 544 made of resin are inserted. One heat insulating material 543 is arranged along the surface near the surface of the second plate 22, and the other heat insulating material 544 is arranged inside the one heat insulating material 543. These heat insulating materials 543 and 544 are arranged over the entire length of the corner upright 20. Note that only one heat insulating material 543, 544 may be arranged, or one heat insulating material having a double structure may be arranged. Since the heat insulating materials 543, 544 are inserted between the indoor plate 43 and the outdoor plate 44, they have high heat insulation performance between the indoor plate 43 and the outdoor plate 44. Therefore, the heat on the indoor side is less likely to escape to the outside, and the cold air outside is also less likely to be transmitted to the inside.

[0048] Near the outdoor side end portion on the surface of the indoor plate 43, the indoor side flat plate portion 206 of the vertical frame 203 is erected along the second finding direction. Strictly speaking, the side on the indoor side of the indoor side flat plate portion 206 on the surface of the indoor plate 43 is in a state of being exposed to the inside. In the middle portion in the second prospective direction on the surface of the outdoor plate 44, the outdoor side flat plate portion 207 of the vertical frame 203 is erected along the second finding direction. Strictly speaking, the side on the outdoor side of the outdoor side flat plate portion 207 on the surface of the outdoor plate 44 is in a state of being exposed to the outside.

[0049] The third plate 23 extends laterally from the indoor end of the indoor plate 43 of the second plate 22 in a direction opposite to the vertical frame 203 side (the side opposite to the vertical frame 203 with respect to the second plate 22). The third plate 23 is formed in a single plate shape over the entire width of the corner square column 20. The entire surface of the third plate 23 faces the inside, but most of it is covered by a decorative material 29 described later.

[0050] The indoor plate 43 of the second plate 22 and the third plate 23 are integrally formed with each other. Therefore, the second plate 22 and the third plate 23 are arranged at a right angle and form an L-shaped in a horizontal cross section. The integrated second plate 22 and third plate 23 is a second half body 26 having a shape obtained by vertically dividing a corner cylinder. The second half body 26 is provided integrally with the vertical frame 203 at the horizontal end of the second sash 200.

[0051] [Corner square column: mounting edge] The mounting edge 27 is made of an aluminum alloy. As shown in FIG. 3, the mounting edge 27 extends from the outdoor-side end of the outdoor plate 42 of the first plate 21 toward the counter vertical frame 103 side. The mounting edge 27 is integrally formed with the outdoor plate 42 of the first plate 21, and a part of the mounting edge 27 is formed with a thick wall. The mounting edge 27 is butted against the outdoor plate 44 of the second plate 22, and in particular, is butted against the part of the outdoor plate 44 that extends outdoors. The second plate 22 is fastened to the mounting edge 27 by one or a plurality of screws 91. Thereby, the first plate 21 and the second plate 22 are assembled to each other so as to form a right angle.

[0052] The mounting edge 28 is made of an aluminum alloy. As shown in FIG. 3, the mounting edge 28 extends from the end of the third plate 23 on the side opposite to the second plate 22 in the second prospective direction and into the inside of the cylinder of the corner upright 20. The mounting edge 28 is integrally formed with the third plate 23, and a part of the mounting edge 28 is formed with a thick wall. The mounting edge 28 is butted against the fourth plate 24, and in particular, is butted against the end of the fourth plate 24 on the side opposite to the first plate 21. The fourth plate 24 is fastened to the mounting edge 28 by one or a plurality of screws 92. Thereby, the third plate 23 and the fourth plate 24 are assembled to each other so as to form a right angle.

[0053] By assembling the first plate 21 and the second plate 22 to each other and assembling the third plate 23 and the fourth plate 24 to each other, the half bodies 25, 26 are assembled to each other so as to form a square tube. The square tube obtained by integrating the half bodies 25, 26 with each other is the main body part of the corner upright 20. Here, the first plate 21 and the third plate 23 face each other in the first finding direction and the second prospective direction, and the second plate 22 and the fourth plate 24 face each other in the first prospective direction and the second finding direction.

[0054] Note that the shape of the cylinder obtained by integrating the half bodies 25 and 26 with each other does not have to be a rectangular prism shape. For example, the corners of the cylinder obtained by integrating the first half body 25 and the second half body 26 with each other may be rounded.

[0055] [Corner erection: refractory material] The refractory materials 51 and 52 are prismatic members made of a fiber-reinforced cement cured product reinforced with fibers other than asbestos. For example, the refractory materials 51 and 52 are obtained by cutting a calcium silicate board into a prismatic shape.

[0056] The refractory materials 51 and 52 are housed inside the rectangular prism formed by the half bodies 25 and 26 as follows.

[0057] The first refractory material 51 is near the inner corner of the first half body 25 and is joined to the back surface (the surface on the inner side of the cylinder of the corner erection 20) of the fourth plate 24 of the first half body 25 at a position on the side of the vertical frame 103 by the width of the support wall 411 in order to avoid the support wall 411. More specifically, the first refractory material 51 is disposed near the inner corner formed by the first and fourth plates 21 and 24 and is fastened to the fourth plate 24 by one or more screws 93. The first refractory material 51 extends vertically along the plates 21 and 24 near the inner corner formed by the plates 21 and 24. The first refractory material 51 is disposed in contact with the back surface side of substantially half of the range on the glass 111 side of the fourth plate 24 that faces the inside of the room as a whole. Further, the tip of the support wall 411 abuts against the first refractory material 51 and restrains the first refractory material 51 in the first finding direction. Note that the first refractory material 51 is illustrated as being slightly separated from the inner corner of the first half body 25, but by slightly narrowing the width of the first refractory material 51 in the first expected direction, it is possible to avoid the support wall 411 and dispose it in the inner corner of the first half body 25 without a gap.

[0058] The second refractory 52 is near the inner corner of the second half body 26 and is joined to the back surface of the third plate 23 of the second half body 26 at a position offset toward the counter vertical frame 203 by the width of the support wall 431 in order to avoid the support wall 431. More specifically, the second refractory 52 is disposed near the inner corner formed by the second and third plates 22, 23 and is fastened to the third plate 23 by one or more screws 94. The second refractory 52 is disposed in contact with substantially the entire back surface side of the third plate 23 facing the interior. Further, the tip of the support wall 431 abuts against the second refractory 52, restraining the second refractory 52 in the second finding direction. Note that, although the second refractory 52 is illustrated as being slightly separated from the inner corner of the second half body 26, by slightly narrowing the width of the second refractory 52 in the second prospective direction, it may be disposed without a gap at the inner corner of the second half body 26 while avoiding the support wall 431. Also, the second refractory 52 is disposed slightly away from the vicinity of the back surface of the fourth plate 24 in order to avoid the mounting edge 28, but a recess corresponding to the mounting edge 28 may be formed, and the second refractory 52 may be disposed in contact with the back surface of the fourth plate 24 as well.

[0059] The surface of the first refractory 51 on the side of the counter vertical frame 103 and the surface of the second refractory 52 on the side opposite to the third plate 23 are in surface contact. The first refractory 51 and the second refractory 52 are joined by a refractory adhesive 53. The refractory adhesive 53 is a sodium silicate-based adhesive such as water glass, and is, for example, an adhesive manufactured by Nippon Insulation Co., Ltd. under the trade name “Bondest”.

[0060] The set of refractories 51, 52 adhered by the refractory adhesive 53 forms an L-shaped cross section. The set of refractories 51, 52 is disposed inside the corner cylinder along the third and fourth plates 23, 24, which is the portion of the corner cylinder formed by the half bodies 25, 26 facing the interior.

[0061] [Corner Upright: Refractory Heat Insulation Material] The refractory heat insulation material 55 is a cotton-like insulation wool made of refractory fibers such as AES (alkali earth silicate). The refractory heat insulation material 55 is packed in the space inside the square tube formed by the half bodies 25, 26. More specifically, the refractory heat insulation material 55 is packed in the inner corner formed by the first and second plates 21, 22. The refractory heat insulation material 55 covers the back surface of at least the part of the first plate 21 that is on the outdoor side rather than the outdoor side flat plate part 107. Further, the refractory heat insulation material 55 covers the inner surface of at least the part of the second plate 22 that is on the outdoor side rather than the outdoor side flat plate part 207. Note that, as shown in FIG. 2, the refractory heat insulation material 55 may cover a wider range of the back surfaces of the first plate 21 and the second plate 22. Also, when the part of the first plate 21 that is on the outdoor side rather than the outdoor side flat plate part 107 and the part of the second plate 22 that is on the outdoor side rather than the outdoor side flat plate part 207 are not large, the installation of the refractory heat insulation material 55 may be omitted.

[0062] [Corner erection: Intermediate column] FIG. 5 is a plan view extracting the first intermediate column 61 and the second intermediate column 66 from FIG. 2. The first intermediate column 61 is made of steel or stainless steel. The first intermediate column 61 extends vertically inside the square tube formed by the half bodies 25, 26. Also, the first intermediate column 61 has a planar shape shown in FIG. 5 uniformly over the entire length in the vertical direction. As shown in FIGS. 2 and 5, the first intermediate column 61 has a web 62, a recess 62a, and flanges 63, 64. The web 62 extends vertically and is formed in a strip shape. The recess 62a is formed by two flat plate parts that extend vertically and are in a strip shape and form a right angle through a fold along the vertical direction. And one planar part of the recess 62a is provided perpendicular to the web 62 at the edge on one side of the web 62. The flange 63 extends vertically and is formed in a strip shape. And the other planar part of the recess 62a is provided perpendicular to the flange 63 at the edge on one side of the flange 63. The flange 64 is provided perpendicular to the web 62 at the edge on the other side of the web 62. The flange 64 extends vertically and is formed in a strip shape. Since the first stud 61 is perpendicular to the configuration in which each of the flange 64, the web 62, the recess 62a, and the flange 63 are adjacent to each other, it contributes to the high rigidity of the first stud 61.

[0063] The entire one side of the flange 63 abuts against the back surface of the first plate 21 (more precisely, the outdoor plate 42) and is fixed to the first plate 21 by one or more screws. The entire one side of the web 62 abuts against the surface of the first refractory 51 opposite to the fourth plate 24 and is fixed to the first refractory 51 by one or more screws 95. The recess 62a is a structure for the web 62 and the flange 63 to avoid the support wall 421, and is recessed so that the corner portion forming the inside corner becomes a right angle according to the arrangement of the support wall 421.

[0064] The first stud 61 is joined to the outdoor plate 42 of the first plate 21 of the first half body 25 and the web 62 is joined to the first refractory 51. Therefore, the first stud 61 can cooperate with the fourth plate 24 to restrain the first refractory 51 from both sides in the first expected direction, and it becomes possible to firmly hold the first refractory 51. Furthermore, the flange 63 of the first stud 61 is joined to the outdoor plate 42 of the first plate 21. Therefore, for example, even when the surface side of the fourth plate 24 of the corner upright 20 is exposed to high temperature due to a fire or the like from the indoor side and the holding force of the first refractory 51 with respect to the fourth plate 24 decreases, the first stud 61 less affected by high heat can continue to firmly hold the first refractory 51.

[0065] In the vertical direction, the first stud 61 is longer than the total length of the square tube formed by the half bodies 25 and 26. The upper end portion protrudes upward from the upper end portion of the square tube, and the lower end portion protrudes downward from the lower end portion of the square tube. The lower end of the first intermediate column 61 is attached to a structural part (not shown), such as a steel frame, provided on the outer wall 5 via a lower bracket (not shown). The upper end of the first intermediate column 61 is attached to a structural part (not shown), such as a steel frame, provided on the outer wall 5 via an upper bracket (not shown).

[0066] Note that the planar shape of the first intermediate column 61 is an example and does not have to be the above shape. For example, if the above functions of the first intermediate column 61 can be ensured, its planar shape can be changed.

[0067] The second intermediate column 66 is made of steel or stainless steel. The second intermediate column 66 extends vertically inside the square tube formed by the half bodies 25, 26. Also, the second intermediate column 66 has a planar shape shown in FIG. 5 uniformly over its entire length in the vertical direction. As shown in FIGS. 2 and 5, the second intermediate column 66 has a web 67, a recess 67a, and flanges 68, 69. The web 67 extends vertically and is formed in a strip shape. The recess 67a is formed by two flat plate portions that extend vertically and form a right angle via a fold along the vertical direction. And one planar portion of the recess 67a is provided perpendicular to the web 67 at an edge on one side of the web 67. The flange 68 extends vertically and is formed in a strip shape. And the other planar portion of the recess 67a is provided perpendicular to the flange 68 at an edge on one side of the flange 68. The flange 69 is provided perpendicular to the web 67 at an edge on the other side of the web 67. The flange 69 extends vertically and is formed in a strip shape. Since each of the flange 69, the web 67, the recess 67a, and the flange 68 of the second intermediate column 66 is perpendicular to the adjacent configuration, it contributes to the high rigidity of the second intermediate column 66.

[0068] The entire one side of the flange 68 abuts against the back surface of the second plate 22 (more precisely, the outdoor plate 44) and is fixed to the second plate 22 by one or more screws. The web 67 abuts against the surface of the entire one side opposite to the third plate 23 in the second refractory 52 and is fixed to the second refractory 52 by one or more screws 96. The recess 67a is a structure for the web 67 and the flange 68 to avoid the support wall 441, and is recessed so that the corner portion that becomes the inner corner is a right angle according to the arrangement of the support wall 441.

[0069] The second stud 66 is joined to the outdoor plate 44 of the second plate 22 of the second half body 26 and the web 67 is joined to the second refractory 52. For this reason, the second stud 66 can cooperate with the third plate 23 to restrain the second refractory 52 from both sides in the second expected direction, and it becomes possible to firmly hold the second refractory 52. Furthermore, the flange 68 of the second stud 66 is joined to the outdoor plate 44 of the second plate 22. For this reason, for example, even when the surface side of the third plate 23 of the corner upright 20 is exposed to high temperature due to a fire or the like from the indoor side and the holding force of the second refractory 52 against the third plate 23 decreases, the second stud 66 that is less affected by high heat can continue to firmly hold the second refractory 52.

[0070] The second stud 66 is longer than the total length of the square tube formed by the half bodies 25 and 26 in the vertical direction, the upper end portion protrudes upward from the upper end portion of the square tube, and the lower end portion protrudes downward from the lower end portion of the square tube. The lower end portion of the second stud 66 is attached to a structural part (not shown), such as a steel frame, provided on the outer wall 6 via a lower bracket (not shown). The upper end portion of the second stud 66 is attached to a structural part (not shown), such as a steel frame, provided on the outer wall 6 via an upper bracket (not shown).

[0071] Note that the planar shape of the second stud 66 is an example and may not be the above shape. For example, if the above functions of the second stud 66 can be ensured, its planar shape can be changed.

[0072] [Corner Upright: Decorative Material] The decorative material 29 has an L-shaped cross-section. The decorative material 29 is mounted on the plates 23 and 24 and covers the heads of the screws 92, 93, and 94.

[0073] [Manufacturing method of the corner upright] The corner upright 20 is manufactured by sequentially performing the following steps (1) to (8).

[0074] [(1) Assembly of refractory material to the stud] Align the first refractory material 51 along the web 62 of the first stud 61 and bring the first refractory material 51 into surface contact with the web 62. Next, fasten the web 62 of the first stud 61 to the first refractory material 51 with one or more screws 95.

[0075] By assembling the first refractory material 51 to the first stud 61 as described above, the shape of the first refractory material 51 is stabilized. Also, the handling and transportation of the first refractory material 51 become easier.

[0076] In the same manner as assembling the first stud 61 to the first refractory material 51, fasten the web 67 of the second stud 66 to the second refractory material 52 with one or more screws 96.

[0077] [(2) Assembly of refractory material and stud to the half body] Place the first refractory material 51 at the inside corner formed by the first and fourth plates 21 and 24. At this time, align the first refractory material 51 along the fourth plate 24 and bring the first refractory material 51 into surface contact with the fourth plate 24, thereby sandwiching the first refractory material 51 between the fourth plate 24 and the web 62 of the first stud 61. Also, align the flange 63 of the first stud 61 along the first plate 21 and bring the flange 63 into surface contact with the first plate 21.

[0078] Next, fasten the fourth plate 24 to the first refractory material 51 with one or more screws 93. Also, fasten the flange 63 to the first plate 21 with a plurality of screws.

[0079] In the same manner as assembling the first refractory 51 and the first intermediate post 61 to the first half body 25, the second refractory 52 is fastened to the third plate 23 by one or more screws 94, and the flange 68 of the second intermediate post 66 is fastened to the third plate 23 by a plurality of screws.

[0080] [(3) Installation of refractory heat insulation material] The back surface of the outdoor plate 42 of the first plate 21 is covered with a refractory heat insulation material 55. The back surface of the outdoor plate 44 of the second plate 22 is covered with a refractory heat insulation material 55.

[0081] [(4) Application of adhesive] An uncured refractory adhesive 53 is applied to the first refractory 51 or the second refractory 52 or both of them.

[0082] [(5) Assembly of square tube] The vertical frame 103 of the first sash 100 and the vertical frame 203 of the second sash 200 are arranged close to each other, and the first sash 100 and the second sash 200 are arranged at right angles. At this time, the first plate 21 and the second plate 22 are arranged at right angles, and the mounting edge 27 is butted against the portion of the second plate 22 that extends indoors. Further, the third plate 23 and the fourth plate 24 are arranged at right angles, and the mounting edge 28 is butted against the portion near the edge of the fourth plate 24. Further, as shown in FIGS. 2 and 3, the first refractory 51 is butted against the second refractory 52 so that the first refractory 51 and the second refractory 52 are combined in an L shape when viewed from above, and the uncured refractory adhesive 53 is sandwiched between these refractories 51, 52. The refractory adhesive 53 cures with the passage of time.

[0083] By combining the first and second plates 21, 22 with the third and fourth plates 23, 24 as described above, the refractory heat insulation material 55 is packed inside these plates 21 to 24.

[0084] Next, fasten the second plate 22 to the mounting edge 27 with one or more screws 91, and fasten the fourth plate 24 to the mounting edge 28 with one or more screws 92.

[0085] [(6) Mounting of decorative material] Place the decorative material 29 at the corner formed by the third and fourth plates 23, 24, and attach the decorative material 29 to the plates 23, 24. Thereby, the heads of the screws 92, 93, 94 are covered by the decorative material 29.

[0086] [(7) Mounting of brackets] Fasten the lower bracket to the lower end of the web 62 of the first intermediate post 61 with screws, and fasten the upper bracket to the upper end of the web 62 of the first intermediate post 61 with screws.

[0087] Fasten other lower brackets to the lower end of the web 67 of the second intermediate post 66 with screws, and fasten other upper brackets to the upper end of the web 67 of the second intermediate post 66 with screws.

[0088] [(8) Examples of process order changes] The process order is not limited to the order listed above, and the order of the processes (1) to (7) may be changed. Examples of changes [1] to [3] are given below. At least two of the following examples of changes [1] to [3] may be combined and applied.

[0089] [1] After the process of (7), the processes of (1) to (6) may be performed in order. [2] The process of (3) may be performed before either the process of (1) or (2). [3] After attaching the intermediate posts 61, 66 to the half bodies 25, 26 respectively, the refractory materials 51, 52 may be attached to the half bodies 25, 26 respectively to fix the refractory materials 51, 52 to the intermediate posts 61, 66.

[0090] [Advantageous technical effects] (1) Since the half bodies 25 and 26 are respectively provided at the horizontal ends of the sashes 100 and 200, the corner upright 20 can be easily manufactured simply by assembling the sashes 100 and 200 at right angles with the studs 61 and 66, the refractory materials 51 and 52, and the refractory heat insulation material 55 assembled.

[0091] (2) The fact that the refractory materials 51 and 52 are housed in the square tubes formed by the half bodies 25 and 26 contributes to the compactness and design improvement of the corner upright 20.

[0092] (3) Since the set of the refractory materials 51 and 52 is provided inside (the back side) of the square tube along the portion exposed indoors of the square tube formed by the half bodies 25 and 26, that is, along the third and fourth plates 23 and 24, it is difficult for the flames in the case of a fire indoors or outdoors to pass through the corner upright 20. Therefore, the corner upright 20 has high flame blocking performance and contributes to the suppression of fire spread. In particular, since the corner upright 20 is provided in a configuration that forms an inside corner between the first sash 100 and the second sash 200, the first sash 100 having fire prevention performance is provided on the first plate 21, and the second sash 200 having fire prevention performance is provided on the second plate 22. For this reason, since the corner upright 20 is protected by the sashes 100 and 200, high flame blocking performance can be ensured from both indoors and outdoors.

[0093] (4) Since the assembled first refractory material 51 and second refractory material 52 are abutted against the inside corner formed by the plates 23 and 24 and these refractory materials 51 and 52 are adhered, it is difficult for the flames in the case of a fire indoors or outdoors to pass through the corner upright 20. Therefore, this corner upright 20 contributes to the suppression of fire spread.

[0094] (5) Since the outdoor plate 42 of the first plate 21 is covered by the fireproof heat insulating material 55 inside the plates 21 to 24, and the outdoor plate 44 of the second plate 22 is covered by the fireproof heat insulating material 55 inside the plates 21 to 24, heat transfer between indoors and indoors is blocked. Since the fireproof heat insulating material 55 has fire resistance, the fire spread suppression performance of the corner upright 20 is improved.

[0095] (6) The first stud 61 integrates the first refractory 51 and the first half body 25 (plates 21, 24). The second stud 66 integrates the second refractory 52 and the second half body 26 (plates 22, 23). And since the first stud 61 is fixed to the structure of the housing 1 with brackets, and further the second stud 66 is fixed to the structure of the housing 1 with brackets, the strength and durability of the corner upright 20 are improved, and the deformation of the corner upright 20 during a fire is suppressed. Also, since the first refractory 51 is pressed by the first stud 61 against the first half body 25, and the second refractory 52 is pressed by the second stud 66 extending vertically against the second half body 26, even if the plates 21 to 24 are deformed or melted by the heat during a fire, the refractories 51, 52 are held, and the fire spread suppression performance of the corner upright 20 is high.

[0096] (7) When the studs 61, 66 are made of steel or stainless steel, even if the plates 21 to 24 made of an aluminum alloy are deformed or melted by the heat during a fire, the studs 61, 66 and the refractories 51, 52 do not collapse. Therefore, the fire spread suppression performance of the corner upright 20 is high.

[0097] (8) Since the plates 21 to 24 are made of an aluminum alloy, the corner upright 20 is lightweight.

[0098] (9) Between the first sash 100 and the first plate 21 of the corner upright 20 and between the second sash 200 and the second plate 22 of the corner upright 20, heat-expandable materials 106a, 113d, 206a, 213d are arranged. Therefore, the heat-expandable materials 106a, 113d, 206a, 213d can suppress the passage of flames and smoke from between the first and second sashes 100, 200 and the corner upright 20, and have high flame-blocking performance, smoke-proof performance, and fire-spread suppression performance. Furthermore, since the heat-expandable material 117 is also arranged between the frames 112, 212 and the glasses 111, 211, the passage of flames and smoke between the frames 112, 212 and the glasses 111, 211 can be suppressed, and the flame-blocking performance, smoke-proof performance, and fire-spread suppression performance are high.

[0099] [Second Embodiment] FIG. 6 shows a cross-sectional view of the periphery of the corner upright 20A of the corner sash 10A as the second embodiment. This corner sash 10A has a structure with high heat insulation between the indoor side and the outdoor side compared to the above-described corner sash 10. In the following description, for this corner sash 10A, the same components as those of the above-described corner sash 10 are denoted by the same reference numerals, and redundant descriptions are omitted, and the components different from those of the corner sash 10 will be mainly described.

[0100] This corner sash 10A has first to third sashes 100A, 200A (the third sash is not shown) and an upright (not shown). The first sash 100A includes a rectangular frame-shaped sash frame 101A and a window body 110A as the first panel. The sash frame 101A has left and right vertical frames 103A (only one is shown) extending vertically in parallel to each other and upper and lower horizontal frames (not shown) extending horizontally in parallel to each other. The window body 110A has a frame 112A and a glass 111.

[0101] The second sash 200A includes a rectangular frame-shaped sash frame 201A and a window body 210A as the second panel. The sash frame 201A has left and right vertical frames 203A (only one shown) extending vertically in parallel to each other and upper and lower horizontal frames (not shown) extending horizontally in parallel to each other. The window body 210A has a frame 212A and glass 211.

[0102] In this corner sash 10A, the heat insulating material 115 inside the frame 112A of the window body 110A is omitted. Instead, the entire indoor flat portion 113Aa and the convex portion 113Ab of the indoor member 113A are made of a heat insulating resin, for example, a rigid polyvinyl chloride resin. The convex portion 113Ab has a structure that enters the entire space where the heat insulating material 115 was disposed, and its tip fits into the tip of the convex portion 114b of the outdoor member 114. Further, the convex portion 113Ab is hollow inside and has a structure of a plurality of layers (for example, three layers) in the first expected direction.

[0103] Also, the heat insulating material 215 inside the frame 212A of the window body 210A is omitted, and the entire indoor flat portion 213Aa and the convex portion 213Ab of the indoor member 213A are formed of a heat insulating resin. The convex portion 213Ab also has a structure that enters the entire space where the heat insulating material 215 was disposed, and its tip fits into the tip of the convex portion 214b of the outdoor member 214. Further, the convex portion 213Ab is also hollow inside and has a structure of a plurality of layers (for example, three layers) in the second expected direction.

[0104] With the above changes, the corner upright 20A has the heat insulating materials 541, 542, 543, 544 omitted. Therefore, the first plate 21A is not separated into an indoor plate 41 and an outdoor plate 42, and is formed in a single plate shape across the entire width of the corner tube of the corner upright 20A. Note that the first plate 21A is made of an aluminum alloy and is integrally formed with the fourth plate 24, which is the same as the corner upright 20.

[0105] Since the first plate 21A is formed as a single plate, a heat insulating plate 401A made of a resin material that covers the indoor flat plate portion 106 erected from the first plate 21A and the portion facing the indoor side of the surface of the first plate 21A is provided. This heat insulating plate 401A is made of a resin having heat insulating properties, and is formed of, for example, a rigid polyvinyl chloride resin. It is composed of a portion covering the entire portion facing the indoor side of the indoor flat plate portion 106 and a portion covering the entire portion of the surface of the first plate 21A that is on the indoor side of the indoor flat plate portion 106. The portion of the heat insulating plate 401A that covers the entire portion of the surface of the first plate 21A that is on the indoor side of the indoor flat plate portion 106 has a hollow interior and has a structure of a plurality of layers (two layers) in the thickness direction of the first plate 21A. Note that the portion of the heat insulating plate 401A that covers the entire portion facing the indoor side of the indoor flat plate portion 106 may also have a structure of a plurality of layers.

[0106] Also, the second plate 22A is not separated into an indoor plate 43 and an outdoor plate 44, and is formed as a single plate over the entire width of the corner upright 20A's square tube. Note that the second plate 22A is made of an aluminum alloy and is integrally formed with the third plate 23, which is the same as the corner upright 20.

[0107] Since the second plate 22A is formed as a single plate, a heat insulating plate 402A made of a resin material that covers the indoor flat plate portion 206 erected from the second plate 22A and the portion facing the indoor side of the surface of the second plate 22A is provided. This heat insulating plate 402A is made of a resin having heat insulating properties, and is composed of a portion covering the entire portion facing the indoor side of the indoor flat plate portion 206 and a portion covering the entire portion of the surface of the second plate 22A that is on the indoor side of the indoor flat plate portion 206. The portion that covers the entire part on the indoor side of the surface of the second plate 22A of the heat insulation plate 402A, which is on the indoor side of the indoor flat plate portion 206, is internally hollow and has a multi-layer (two-layer) structure in the thickness direction of the second plate 22A. Note that the portion covering the entire part of the indoor-facing portion of the indoor flat plate portion 206 of the heat insulation plate 402A may also have a multi-layer structure in the same manner.

[0108] Furthermore, for the decorative material 29A of the corner upright 20A, regarding the portion covering the fourth plate 24, the end on the side of the first plate 21A is extended, and the tip thereof abuts so as to overlap with the end on the side opposite to the indoor flat plate portion 106 in the portion covering the entire part on the indoor side of the surface of the first plate 21A of the heat insulation plate 401A, which is on the indoor side of the indoor flat plate portion 106. Also, for the portion of the decorative material 29A covering the third plate 23, the end on the side of the second plate 22A is extended, and the tip thereof abuts so as to overlap with the end on the side opposite to the indoor flat plate portion 206 in the portion covering the entire part on the indoor side of the surface of the second plate 22A of the heat insulation plate 402A, which is on the indoor side of the indoor flat plate portion 206. As a result, substantially the entire range of the indoor-facing surfaces of the respective plates 21A, 22A, 23, 24 of the corner upright 20A is covered by the decorative material 29A and the heat insulation plates 401A and 402A.

[0109] Also, since the corner upright 20A does not have heat insulating materials 541, 542, 543, 544, the first and second intermediate columns 61A, ............ 66A do not have portions corresponding to the recesses 62a, 67a, that is, the portions corresponding to the webs 62, 67 and the portions corresponding to the flanges 63, 68 are directly connected and integrated, and the cross-sectional shapes of the first and second intermediate columns 61A, 66A are substantially L-shaped.

[0110] Also, since the corner upright 20A does not have heat insulating materials 541, 542, 543, 544 inside, the first refractory material 51A has a widened width and is brought closer to the first plate 21A. Similarly, the second refractory material 52A has a widened width and is brought closer to the second plate 22A. Note that the first and second refractory materials 51A and 52A may be formed with recesses for receiving projections such as screws on the sides of the first and second plates 21A and 22A, and be brought into close contact with the first and second plates 21A and 22A.

[0111] In addition, it is preferable that other vertical and horizontal frames other than the frames 112A and 212A not shown in the drawings have the same heat insulation structure as the frames 112A and 212A. In addition, it is preferable that other vertical and horizontal frames of the sash frames 101A and 201A not shown in the drawings have the same heat insulation structure as the vertical frames 103A and 203A. The same also applies to the third sash not shown in the drawings.

[0112] As described above, since the corner sash 10A has changed the entire indoor members 113A and 213A from an aluminum alloy to a resin material, it is possible to improve the heat insulation between the indoor side and the outdoor side. Furthermore, the convex portions 113Ab and 213Ab of the indoor members 113A and 213A that protrude toward the outdoor members 114 and 214 of the indoor members 113A and 213A are internally hollow and have a multi-layer structure in the first and second expected directions, so it is possible to further improve the heat insulation between the indoor side and the outdoor side.

[0113] In addition, the corner upright 20A includes heat insulation plates 401A and 402A made of a resin material, and since the entire part of the indoor side flat parts 106 and 206 facing the indoor and the entire part of the indoor side of the surface of the second plate 22A are covered, heat or cold air transmission through the indoor side flat part 206 and the first and second plates 21A and 22A is suppressed, and it is possible to further improve the heat insulation between the indoor side and the outdoor side. In particular, the portion covering the entire part of the surfaces of the heat insulation plates 401A and 402A on the surfaces of the first and second plates 21A and 22A and on the indoor side of the indoor side flat parts 106 and 206 has a multi-layer structure with internal hollows, so it is possible to further improve the heat insulation between the indoor side and the outdoor side in the corner upright 20A.

[0114] In addition, the corner upright 20A can cover substantially the entire range facing the interior on the surfaces of the respective plates 21A, 22A, 23, and 24 of the corner upright 20A by extending the decorative material 29A, and it is possible to further improve the heat insulation performance between the indoor side and the outdoor side in the corner upright 20A.

[0115] Moreover, since the corner upright 20A does not have heat insulating materials 541, 542, 543, 544, the widths of the first and second refractory materials 51A, 52A can be widened and brought closer by the first and second plates 21A, 22A, so that it is possible to improve the flame blocking performance from both the indoor and outdoor sides of the corner upright 20A.

[0116] Note that, as shown in FIG. 7, the corner sash 10A may be configured to include the indoor members 113A, 213A, the heat insulating plates 401A, 402A, and the decorative material 29A, using the plates 21 to 24 and the inner configuration of the corner upright 20 described above for the corner upright 20A as they are. In the case of the configuration of FIG. 7, since the first and second plates 21, 22 have heat insulating materials 541, 542, 543, 544, it is possible to further improve the heat insulation performance between the indoor side and the outdoor side in the corner upright 20A.

[0117] [Third Embodiment] FIG. 8 shows a cross-sectional view around the corner upright 20B of the corner sash 10B as the third embodiment. In this corner sash 10B, the first panel is constituted by glass 111 and the second panel is constituted by glass 211. Also, in the corner upright 20B of the corner sash 10B, the plates 21 to 24 and the inner configuration of the plates 21 to 24 are all the same as those of the corner upright 20. In the following description, for this corner sash 10B, the same components as those of the aforementioned corner sash 10 will be denoted by the same reference numerals and redundant descriptions will be omitted, and mainly the components different from those of the corner sash 10 will be described.

[0118] This corner sash 10B has first to third sashes 100B, 200B (the third sash is not shown) and a mullion not shown. The first sash 100B includes a rectangular sash frame 101B and a first panel of glass 111. The sash frame 101B has left and right vertical frames 103B (only one of which is shown) that extend vertically and parallel to each other, and upper and lower horizontal frames (not shown) that extend horizontally and parallel to each other. The vertical frame 103B has an indoor-side flat plate portion 106B and an outdoor-side flat plate portion 107B.

[0119] The second sash 200B includes a rectangular sash frame 201B and a second panel of glass 211. The sash frame 201B has left and right vertical frames 203B (only one of which is shown) that extend vertically and parallel to each other, and upper and lower horizontal frames (not shown) that extend horizontally and parallel to each other. The vertical frame 203B has an indoor side flat plate portion 206B and an outdoor side flat plate portion 207B.

[0120] This corner sash 10B holds the edge of the corner mullion 20B side along the vertical direction of the glass 111 by an indoor side flat plate portion 106B and an outdoor side flat plate portion 107B, which are raised edges respectively erected from the indoor plate 41 and the outdoor plate 42 of the first plate 21 of the corner mullion 20B. This corner sash 10B holds the edge of the corner mullion 20B side along the vertical direction of the glass 211 by means of an indoor side flat plate portion 206B and an outdoor side flat plate portion 207B, which are raised edges respectively erected from the indoor plate 43 and the outdoor plate 44 of the second plate 22 of the corner mullion 20B.

[0121] The indoor side flat plate portion 106B is parallel to the first projection direction and has a strip shape that is long in the vertical direction. The indoor side flat plate portion 106B is hollow inside and has a multi-layer (for example, two-layer) structure in the first projection direction. The indoor side flat plate portion 106B is erected vertically from the surface of the indoor plate 41 of the first plate 21 and is detachable from the indoor plate 41. A connecting structure is provided between the indoor side flat plate portion 106B and the indoor plate 41, in which the indoor side flat plate portion 106B is separated by sliding it toward the glass 111 along the first projection direction, and is connected by sliding it toward the opposite side from the glass 111. At the tip of the indoor side flat plate portion 106B, a sealant 111Ba made of a highly heat-resistant resin material is interposed between the glass 111 and the surface of the tip facing the glass 111.

[0122] The outdoor-side flat plate portion 107B is parallel to the first facing direction and has a strip shape that is long in the vertical direction. The outdoor-side flat plate portion 107B stands vertically from the surface of the outdoor plate 42 of the first plate 21. Furthermore, at the tip of the outdoor-side flat plate portion 107B, a sealant 111Bb made of a highly heat-resistant resin material is interposed between the glass 111 and the surface of the tip facing the glass 111.

[0123] The area surrounded by the indoor-side flat plate portion 106B, the outdoor-side flat plate portion 107B, the first plate 21, and the glass 111 is an enclosed space. Within this area, a pair of heat-foaming materials 117B, 117B are arranged by adhering to the surface of the first plate 21, spaced apart in the first projection direction. Each heat-foaming material 117B is provided over the entire length of the indoor-side flat plate portion 106B and the outdoor-side flat plate portion 107B (the same as or slightly longer than the entire length of the edge of the glass 111 on the first plate 21 side). This heat-foaming material 117B is made of the same material as the heat-foaming material 117 described above. This prevents flames and smoke from passing from indoors to outdoors or from outdoors to indoors, improving flame blocking, smoke prevention, and fire spread suppression capabilities.

[0124] In addition, the corner sash 10B holds the edge of the corner mullion 20B side along the vertical direction of the glass 211 by means of an indoor-side flat plate portion 206B and an outdoor-side flat plate portion 207B that are erected respectively from the indoor plate 43 and the outdoor plate 44 of the second plate 22 of the corner mullion 20B.

[0125] The indoor flat plate portion 206B is parallel to the second finding direction and has a long strip shape in the longitudinal direction. The indoor flat plate portion 206B is hollow inside and has a structure of multiple layers (for example, two layers) in the second expected direction. The indoor flat plate portion 206B is vertically erected from the surface of the indoor plate 43 of the second plate 22 and is detachable from the indoor plate 43. A connecting structure is provided between the indoor flat plate portion 206B and the indoor plate 43, which is separated by sliding the indoor flat plate portion 206B along the second expected direction to the glass 211 side and is connected by sliding it to the side opposite to the glass 211 side. In addition, at the tip of the indoor flat plate portion 206B, a sealing material 211Ba made of a highly heat-resistant resin material is inserted between the opposing surface on the glass 211 side at the tip and the glass 211.

[0126] The outdoor flat plate portion 207B is parallel to the second finding direction and has a long strip shape in the longitudinal direction. The outdoor flat plate portion 207B is vertically erected from the surface of the outdoor plate 44 of the second plate 22. In addition, at the tip of the outdoor flat plate portion 207B, a sealing material 211Bb made of a highly heat-resistant resin material is inserted between the opposing surface on the glass 211 side at the tip and the glass 211.

[0127] The area surrounded by the indoor flat plate portion 206B, the outdoor flat plate portion 207B, the second plate 22, and the glass 211 is a sealed space. Inside this area, on the surface of the second plate 22, a pair of heating and foaming materials 217B, 217B are arranged by sticking at intervals in the second expected direction. Each heating and foaming material 217B is provided over the entire length of the indoor flat plate portion 206B and the outdoor flat plate portion 207B (the same as or slightly longer than the entire length of the edge of the glass 211 on the second plate 22 side). This heating and foaming material 217B is made of the same material as the heating and foaming material 117 described above. Thereby, the passage of flames and smoke from indoors to outdoors or from outdoors to indoors can be suppressed, and the flame blocking performance, smoke prevention performance, and fire spread suppression performance are enhanced.

[0128] In addition, it is preferable to provide a configuration equivalent to the indoor-side flat plate portion 106B, the outdoor-side flat plate portion 107B, the sealing materials 111Ba and 111Bb, and the heat-expandable material 117B at the other edge portions along the vertical direction and the edge portions along the horizontal direction of the glasses 111 and 211 not shown in the figure. The same applies to the third sash not shown in the figure.

[0129] According to the above configuration, the corner upright 20B can hold the glasses 111 and 211 via the indoor-side flat plate portions 106B and 206B and the outdoor-side flat plate portions 107B and 207B, and it becomes possible to simplify the configuration for holding the glasses 111 and 211 of the corner sash 10B. Further, due to the simplification of the configuration, it becomes possible to reduce the weight of the configuration for holding the glasses 111 and 211 of the corner sash 10B.

[0130] In addition, in the region surrounded by the indoor-side flat plate portion 106B, the outdoor-side flat plate portion 107B, the first plate 21, and the glass 111, a glass holding clip equivalent to the aforementioned glass holding clip 116 may be provided on the surface side of the first plate 21. Similarly, in the region surrounded by the indoor-side flat plate portion 206B, the outdoor-side flat plate portion 207B, the second plate 22, and the glass 211, a glass holding clip equivalent to the aforementioned glass holding clip 216 may be provided on the surface side of the second plate 22.

[0131] [Others] The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. For example, in the embodiments, components integrally formed by a single member may be replaced with components divided into a plurality of members and connected or fixed to each other. Further, components configured by connecting a plurality of members may be replaced with components integrally formed by a single member. In addition, the details shown in the embodiments can be appropriately changed without departing from the gist of the invention.

Description of Reference Numerals

[0132] 20, 20A, 20B Corner Upright 21, 21A First Plate 22, 22A Second Plate 23 Third Plate 24 Fourth Plate 25, 25A Half Body (First Half Body) 26, 26A Half Body (Second Half Body) 51, 51A First Refractory 52, 52A Second Refractory 53 Refractory Adhesive 55 Refractory Insulation 61, 61A First Intermediate Post 66, 66A Second Intermediate Post 100, 100A, 100B First Sash 101, 101A, 101B Sash Frame 102, 103, 103A, 103B Vertical Frame 106a, 113d, 117, 117B Heat Expansive Foam 110 Window Body, 110A (Shoji, First Panel) 111 Glass (First Panel) 200, 200A, 200B Second Sash 201, 201A, 201B Sash Frame 202, 203, 203A, 203B Vertical Frame 206a, 213d, 217, 217B Heat Expansive Foam 210, 210A Window Body (Shoji, Second Panel) 211 Glass (Second Panel)

Claims

1. A first half body provided at a horizontal end of a first panel made of a shoji or glass having fireproof performance, and having a shape in which a cylinder is vertically split; A second half body provided at a horizontal end of a second panel made of a shoji or glass having fireproof performance, arranged at a right angle to the first panel, having a shape in which the cylinder is vertically split, and assembled to the first half body so as to form the cylinder; A first refractory material attached to the first half body so as to be inside the cylinder and extending vertically; A second refractory material attached to the second half body so as to be inside the cylinder, extending vertically, and joined to the first refractory material; Comprising: A corner upright provided in a corner arrangement where it forms a corner between the first panel and the second panel, wherein the first refractory material and the second refractory material are provided inside the cylinder along a portion of the cylinder facing the indoor side. Corner upright.

2. Heat-expandable materials are arranged between the first panel and the corner upright and between the second panel and the corner upright. The corner upright according to Claim 1.

3. The first refractory material is pressed against the first half body by a first vertical stud; The second refractory material is pressed against the second half body by a second vertical stud. The corner upright according to Claim 1.

4. Both the first stud and the second stud have their upper and lower ends fixed to the building frame where the corner upright is installed. The corner upright according to Claim 3.

5. Inside the cylinder, a refractory heat-insulating material is stored separately from the first refractory material and the second refractory material. The corner upright according to Claim 1.

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