Doors and fittings

Abstract

To provide a fitting that can realize a simple structure by reducing the number of components, improve workability, and improve fire prevention performance.SOLUTION: A fitting comprises: a frame body provided in an opening of a building and framed on four sides; and four sash screens supported movably to left and right by the frame body. At least two inner sashes 3A, 3A of the four sashes have abutment frames 37 and are abutted against each other. Each of the abutment frames 37 is provided with an abutment part that forms a first hollow part F1 surrounded on four sides in a depth direction and a width direction with abutment frames 37A and 37B abutted against each other. A first heated foaming material 51 is provided on a depth surface of the abutment part.SELECTED DRAWING: Figure 3

Description

Technical Field

[0006] ,

[0001] The present disclosure relates to fittings.

Background Art

[0002] Conventionally, in a fireproof window sash, the member at the center in the width direction within the sash frame is easily affected by fire and is an important member for satisfying fireproof performance. As such a fireproof window sash, for example, there is provided a frame body framed on four sides provided at an opening of a building, and a plurality of shoji supported to be movable left and right on the frame body. Among the plurality of shoji, a four-panel fitting in which the two central shoji have abutment frames and are abutted against each other is known (for example, see Patent Document 1).

[0003] In the case of a four-panel fitting, the abutment portion where the abutment frames are abutted against each other is a portion that requires fireproof measures. In Patent Document 1, a plate-shaped metal fitting is provided in the space of the abutment portion, and a heat-expandable material is provided on the metal fitting. Even if the resin cover material melts due to a fire, the heat-expandable material heated and expanded is pressed and held by the metal fitting, and a fitting in which a gap is hardly generated in the space is described.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the fireproof structure shown in Patent Document 1, it is necessary to provide a metal fitting in addition to the heat-expandable material. Since the number of members increases and the workability deteriorates, there is room for improvement in that regard.

[0006] In a butt joint of a four-panel door, the strength of the left and right butt joints is equal, so the out-of-plane warping is also equal, making it less likely for gaps to form due to warping. On the other hand, unlike meeting joints, butt joints do not have in-plane restraint by metal fittings, so there is a risk that the center in the vertical direction will warp in the in-plane direction, causing gaps to form between the two butt joints, which reduces fire resistance.

[0007] This disclosure provides a building component that can achieve a simple structure by reducing the number of components, improve workability, and enhance fire resistance. [Means for solving the problem]

[0010] This disclosure One aspect The joinery comprises a frame that is installed in the opening of a building and frames on all four sides, and a plurality of sliding doors supported on the frame so as to be movable from side to side, wherein at least two of the plurality of sliding doors are butted together with abutting frame, and each of the abutting frames is provided with a butt joint that forms a first hollow space enclosed on all four sides in the depth direction and the facing direction when the abutting frames are butted together, and a first heat-expanded foam material is provided on the depth surface of the abutting joint, and a second heat-expanded foam material is provided on at least one of the facing surface and the depth surface of the second hollow space formed by being surrounded by the lower frame of the frame and the lower frame of the sliding doors, and a second heat-expanded foam material is provided on at least one of the facing surface and the depth surface of the second hollow space formed by being surrounded by the lower frame of the frame and the lower frame of the sliding doors. The butt joint frame has a fourth hollow section formed adjacent in the width direction to the glass retaining groove that holds the glass panel of the shoji screen, and a fourth heat-foaming material is provided in the fourth hollow section on at least one of the visible surface and the visible surface, and the first heat-foaming material and the second heat-foaming material are arranged to be continuously connected to the fourth heat-foaming material when foaming. It is. [Brief explanation of the drawing]

[0011] [Figure 1] This is a front view of a sliding sash window according to the first embodiment of this disclosure, as seen from the interior side. [Figure 2] Figure 1 shows a vertical cross-sectional view of a sliding window. [Figure 3] Figure 1 is a horizontal cross-sectional view of a sliding window. [Figure 4] Figure 2 is an enlarged view of the main part of the sliding sash window. [Figure 5]Figure 2 is an enlarged view of the main part of the sliding sash window. [Figure 6] This is a front view of the butt joint frame as seen from the outside. [Figure 7] This is a horizontal cross-sectional view of a butt joint frame. [Figure 8] This is a side view of one of the shoji screens equipped with a convex member, as seen from the width direction. [Figure 9] This is a side view showing the configuration of the partition fittings. [Figure 10] This is a horizontal cross-sectional view showing the configuration of the partition fittings. [Modes for carrying out the invention]

[0012] As shown in Figure 1, in this embodiment, a four-panel sliding sash window 100 installed in an opening of a building will be described as an example of a building fixture.

[0013] The sliding sash window 100 comprises a frame 2 that is installed in the opening of a building and frames all four sides, and four sliding sashes 3 that are supported by the frame 2. Of the four sashes 3, the two sashes 3 in the center on the left and right sides have a butt joint frame 37 and are located on the indoor side, which are called interior sashes 3A. The exterior sashes located on the outdoor side on both the left and right sides of the two central interior sashes 3A are indicated by reference numeral 3B.

[0014] In the following explanation, the direction that runs horizontally between the outdoor side (the +Z side shown in Figure 2, etc.) and the indoor side (the -Z side shown in Figure 2, etc.) is referred to as the indoor-outdoor direction (direction of arrow Z in the diagram). The direction that runs horizontally perpendicular to the indoor-outdoor direction Z is referred to as the width direction (direction of arrow X in the diagram). The direction that is perpendicular to both the indoor-outdoor direction Z and the width direction X is referred to as the vertical direction (direction of arrow Y in the diagram). In each component, the side that moves away from the center in the indoor-outdoor direction Z and the width direction X may be referred to as the outside, and the side that moves towards the center may be referred to as the inside. In the parts that make up the sliding sash 100, the indoor-outdoor direction Z may be referred to as the depth direction, and the surface direction perpendicular to the depth direction may be referred to as the face direction.

[0015] The frame body 2 is formed in a rectangular frame shape. The frame body 2 has an upper frame 21, a lower frame 22, and a pair of vertical frames 23. The frame body 2 is made of resin. Note that the frame body 2 may be composed of a metal profile such as an aluminum alloy, a structure composed of an aluminum resin composite (a structure in which an aluminum member and a resin member are assembled), or a member made only of resin.

[0016] The upper frame 21 and the lower frame 22 extend in the width direction X (see FIG. 3). The vertical frame 23 extends in the vertical direction Y. Each vertical frame 23 connects the end of the upper frame 21 and the end of the lower frame 22.

[0017] As shown in FIGS. 2 and 4, the upper frame 21 has an upper wall 210 and a pair of rail guiding inner walls 211, 212 that extend along the width direction X and are provided at intervals in the indoor-outdoor direction Z. The upper end of the inner shutter 3A is slidably fitted in the width direction X to the inner rail 211 on the indoor side. The upper end of the outer shutter 3B is slidably fitted in the width direction X to the outer rail 212 on the outdoor side. The shape of the upper frame 21 is not limited to the shape having the pair of rail guiding inner walls 211, 212 as shown in FIG. 2, and for example, an upper frame having a groove shape may be adopted.

[0018] The upper frame 21 forms a third hollow portion F3 surrounded by the upper frame 34 of the inner shutter 3A.

[0019] As shown in Fig. 4, in the third hollow portion F3, on the lower surface 210a (prospective surface) of the central upper wall between the pair of rail guide inner walls 211 and 212 of the upper wall 210, and on the lower surface 210b (prospective surface) of the indoor upper wall 210B between the inner rail 211 and the indoor side wall 214, a sheet-like third heat-insulating and foaming material 53A is provided. The third heat-insulating and foaming material 53A is continuously provided over the entire length in the width direction X of the upper frame 21. The third heat-insulating and foaming material 53A is fixed to the lower surfaces 210a and 210b, for example, by double-sided tape or the like. A plurality of the third heat-insulating and foaming materials 53A may be laminated. The foaming temperature of the third heat-insulating and foaming material 53A can be appropriately adopted as an optimum one. The third heat-insulating and foaming material 53A is arranged so as to be continuously connected to a fourth heat-insulating and foaming material 54 (see Fig. 3) provided on the butt frame 37 described later during foaming.

[0020] As shown in Figs. 2 and 5, the lower frame 22 has an indoor side wall 220, an upper stage portion 221, an inner shutter support portion 222, an inner rail 223, a lower stage portion 224, an outer shutter support portion 225, and an outer rail 226. The lower frame 22 is formed in a stepped shape by the upper stage portion 221 and the lower stage portion 224. The shape of the lower frame 22 is not limited to a shape having a step as shown in Fig. 2, and for example, an upper frame having a flat shape in the horizontal direction without a step may be adopted.

[0021] The upper stage portion 221 is arranged on the indoor side of the lower frame 22. The upper stage portion 221 is formed in a plate shape and extends in the width direction X with the plate surface facing upward. The inner shutter support portion 222 projects upward at a position on the indoor side in the upper stage portion 221. A first airtight material 24 that extends and projects outward is provided on the inner shutter support portion 222. The first airtight material 24 extends along the longitudinal direction of the lower frame 22. The inner shutter support portion 222 is in contact with the indoor side surface of the lower frame 35 of the inner shutter 3A from the indoor side via the first airtight material 24. The inner rail 223 projects upward at a position on the outdoor side in the upper stage portion 221 and supports the door wheel 43 of the inner shutter 3A so as to be rollable.

[0022] The lower section 224 is positioned on the outdoor side of the upper section 221. The lower section 224 is positioned at a lower height than the upper section 221, is formed in a plate shape, and extends in the width direction X with its plate surface facing upward. The outer sash support section 225 has a tip 225a that extends outward and protrudes at the outdoor side position of the upper section 221, and contacts the second airtight material 25 provided on the indoor side of the lower frame 32 of the outer sash 3B from the indoor side. The outer rail 226 protrudes upward at the outdoor side position of the lower section 224 and supports the rollers 44 of the outer sash 3B so that they can roll. The outer rail 226 that supports the outer sash 3B is positioned lower than the inner rail 223 that supports the inner sash 3A.

[0023] The lower frame 22 forms a second hollow section F2 enclosed between it and the lower frame 35 of the inner sliding door 3A.

[0024] As shown in Figure 5, in the second hollow section F2, a sheet-like second heat-expanded foaming material 52A is provided on the upper surface 221a (visible surface) of the upper section 221, the visible surface 220a of the indoor wall 220 facing the inner rail 223, and the visible surface 223a of the inner rail 223 facing the indoor wall 220. The second heat-expanded foaming material 52A is provided continuously along the entire length of the lower frame 22 in the width direction X. The second heat-expanded foaming material 52A is fixed to each mounting surface, for example, with double-sided tape. Multiple sheets of the second heat-expanded foaming material 52A may be laminated. The foaming temperature of the second heat-expanded foaming material 52A can be set to an optimal value as appropriate. The second heat-expanded foaming material 52A is arranged to be continuously connected to the fourth heat-expanded foaming material 54 (see Figure 3) provided on the butt joint frame 37, which will be described later, during foaming.

[0025] As shown in Figures 2 and 3, the pair of outer sashes 3B on both sides in the width direction are positioned on the outdoor side of the pair of inner sashes 3A. The outer sashes 3B and inner sashes 3A are mounted on the frame 2 so as to be slidable and slidable in the width direction X. When the outer sashes 3B and inner sashes 3A are closed, they close the opening on the inside of the frame 2.

[0026] As shown in Figures 1 and 2, the outer sash 3B has a frame 30B and a glass panel 40. The frame 30B is formed in a four-sided frame shape. The frame 30B has an upper frame 31, a lower frame 32, and a pair of vertical frames 33. The frame 30B is made of resin. The frame 30B may be made of metal profiles such as aluminum alloy, an aluminum-resin composite (a configuration in which aluminum and resin members are assembled), or a component made solely of resin. The upper frame 31 and the lower frame 32 extend in the width direction X. The vertical frames 33 extend in the vertical direction Y and connect the end of the upper frame 31 and the end of the lower frame 32.

[0027] As shown in Figures 2 and 4, the upper frame 31 has an outer wall 311, an inner wall 312, an upper wall 313 connecting the upper ends of the outer wall 311 and the inner wall 312, and a rail support portion 314 extending above the upper wall 313. The outer wall 311 is located on the outdoor side of the glass panel 40. The inner wall 312 is located on the indoor side of the glass panel 40. The outer wall 311 and the inner wall 312 are formed in a plate shape, and their respective plate surfaces are arranged in a direction perpendicular to the indoor-outdoor direction. The outer wall 311 and the inner wall 312 are arranged over approximately the entire width X of the outer sash 3B. The downward projection length from the upper wall 313 of the outer wall 311 and the inner wall 312 is the same. The lower end of the outer wall 311 and the lower end of the inner wall 312 are located at approximately the same height.

[0028] The rail support portion 314 extends upward from the upper wall 313 and has a rail guide groove 314a that opens upward. The rail guide groove 314a is fitted into the outer rail 212 of the upper frame 21. The outer sash 3B is movable along the outer rail 212 of the upper frame 21.

[0029] As shown in Figures 2 and 5, the lower frame 32 has an outer wall 321, an inner wall 322, a lower wall 323 connecting the lower ends of the outer wall 321 and the inner wall 322, and a roller support portion 324 extending below the lower wall 323. The outer wall 321 is located on the outdoor side of the glass panel 40. The inner wall 322 is located on the indoor side of the glass panel 40. The outer wall 321 and the inner wall 322 are formed in a plate shape, and their respective plate surfaces are arranged on a visible surface that is perpendicular to the indoor-outdoor direction Z. The outer wall 321 and the inner wall 322 are arranged over approximately the entire width X of the outer sash 3B. The projection lengths of the outer wall 321 and the inner wall 322 from the lower wall 323 are the same. The upper end of the outer wall 321 and the upper end of the inner wall 322 are located at approximately the same height.

[0030] The roller support section 324 extends downward from the lower wall 323 and has a roller housing groove 324a that opens downward. The roller 44 is rotatably supported in the roller housing groove 324a. The roller 44 is positioned opposite the outer rail 226 of the lower frame 22 in the vertical direction Y. The roller 44 can travel by rolling on the outer rail 226 of the lower frame 22.

[0031] The glass panel 40 of the outer sash 3B is housed within the frame 30B. The glass panel 40 is double-pane glass, but single-pane glass or the like may also be used.

[0032] The pair of inner sliding doors 3A in the center in the width direction have a frame 30A and a glass panel 40. The frame 30A is formed in a four-sided frame shape.

[0033] As shown in Figures 1 to 3, the frame 30A has an upper frame 34, a lower frame 35, a meeting frame 36, and a butt frame 37. The frame 30A is made of resin. The frame 30A may be made of metal profiles such as aluminum alloy, an aluminum-resin composite (a configuration in which aluminum and resin members are assembled), or a component made solely of resin. The upper frame 34 and the lower frame 35 extend in the width direction X. The meeting frame 36 and the butt frame 37 extend in the vertical direction Y and connect the end of the upper frame 34 and the end of the lower frame 35.

[0034] As shown in Figures 2 and 4, the upper frame 34 has an outer wall 341, an inner wall 342, an upper wall 343 connecting the upper ends of the outer wall 341 and the inner wall 342, and a rail support portion 344 extending above the upper wall 343. The outer wall 341 is located on the outdoor side of the glass panel 40. The inner wall 342 is located on the indoor side of the glass panel 40. The outer wall 341 and the inner wall 342 are formed in a plate shape, and their respective plate surfaces are arranged in a direction perpendicular to the indoor-outdoor direction. The outer wall 341 and the inner wall 342 are arranged over approximately the entire width X of the inner sash 3A. The downward projection length from the upper wall 343 of the outer wall 341 and the inner wall 342 is the same. The lower end of the outer wall 341 and the lower end of the inner wall 342 are located at approximately the same height.

[0035] The rail support portion 344 extends upward from the upper wall 343 and has a rail guide groove 344a that opens upward. The inner rail 211 of the upper frame 21 is supported by the rail guide groove 344a. The rail guide groove 344a can travel along the inner rail 211 of the upper frame 21.

[0036] The upper frame 34 forms a third hollow section F3 enclosed between it and the upper frame 21 of the inner sliding door 3A.

[0037] As shown in Figures 2 and 4, in the third hollow section F3, a sheet-like third heat-expanded foam material 53B is provided on the upper surface 344b (visible surface) and the opposing visible surfaces 344c and 344d of the rail guide groove 344a of the upper wall 343. The third heat-expanded foam material 53B is provided continuously along the entire length of the upper frame 34 in the width direction X. The third heat-expanded foam material 53B is fixed to the mounting surface, for example, with double-sided tape. Multiple sheets of the third heat-expanded foam material 53B may be laminated. The foaming temperature of the third heat-expanded foam material 53B can be set to an appropriate and optimal value. When foamed, the third heat-expanded foam material 53B of the upper frame 34 is connected to the heat-expanded foam material 53A of the upper frame 21 and is arranged to be continuously connected to the fourth heat-expanded foam material 54 (see Figure 3) provided on the butt joint frame 37, which will be described later.

[0038] As shown in Figures 2 and 5, the lower frame 35 has an outer wall 351, an inner wall 352, a lower wall 353 connecting the lower ends of the outer wall 351 and the inner wall 352, and a roller support portion 354 extending below the lower wall 353. The outer wall 351 is located on the outdoor side of the glass panel 40. The inner wall 352 is located on the indoor side of the glass panel 40. The outer wall 351 and the inner wall 352 are formed in a plate shape, and their respective plate surfaces are arranged in a direction perpendicular to the indoor-outdoor direction. The outer wall 351 and the inner wall 352 are arranged over approximately the entire width X of the inner sash 3A. The projection lengths of the outer wall 351 and the inner wall 352 from the lower wall 353 are the same. The upper end of the outer wall 351 and the upper end of the inner wall 352 are located at approximately the same height.

[0039] The lower wall 353 of the lower frame 35 has a first outside air intake hole 41 and a second outside air intake hole 42 that penetrate vertically between the outer wall 351 and the inner wall 352. The outside air intake holes 41 and 42 are provided, for example, in two locations along the longitudinal direction of the lower frame 35. Outside air flows through the first outside air intake hole 41 and the second outside air intake hole 42 to the upper side of the lower wall 353 of the lower frame 35, that is, from the lower to the upper region of the lower wall 353.

[0040] The roller support section 354 extends downward from the lower wall 353 and has a roller housing groove 354a that opens downward. The roller 43 is rotatably supported in the roller housing groove 354a. The roller 43 is positioned opposite the inner rail 223 of the lower frame 22 in the vertical direction Y. The roller 43 can travel by rolling on the inner rail 223 of the lower frame 22.

[0041] The lower frame 35 forms a second hollow section F2 enclosed between it and the lower frame 22 of the inner sliding door 3A.

[0042] As shown in Figures 2 and 5, in the second hollow section F2, a sheet-like second heat-expanded foam material 52B is provided on the bottom surface 354b (visible surface) and the opposing visible surfaces 354c and 354d of the roller support section 354. The second heat-expanded foam material 52B is provided continuously along the entire length of the lower frame 35 in the width direction X. The second heat-expanded foam material 52B is fixed to the mounting surface, for example, with double-sided tape. Multiple sheets of the second heat-expanded foam material 52B may be laminated. The foaming temperature of the second heat-expanded foam material 52B can be set to an optimal value as appropriate. When foamed, the second heat-expanded foam material 52B of the lower frame 35 connects to the second heat-expanded foam material 52A of the lower frame 22 and is arranged to connect continuously to the fourth heat-expanded foam material 54 (see Figure 3) provided on the butt joint frame 37, which will be described later.

[0043] The glass panel 40 of the inner sash 3A is housed within the frame 30A. The glass panel 40 is double-pane glass, but single-pane glass or the like may also be used.

[0044] As shown in Figure 3, the meeting stile 36 overlaps the vertical stile 33 of the outer sash 3B in the indoor-outdoor direction when the inner sash 3A and outer sash 3B are closed.

[0045] The upper frame 34, lower frame 35, meeting frame 36, and butt frame 37 each have a glass retaining groove 45 with a roughly U-shaped cross-section. The peripheral edge of the glass panel 40 is fitted into the glass retaining groove 45. The glass surface of the peripheral edge of the glass panel 40 is held in place by glass retaining materials and packings that are locked to each of the frames 34, 35, 36, and 37.

[0046] A glass-holding space S1 is formed between the glass-holding groove 45 and the glass-holding material and packing in each of the frames 34, 35, 36, and 37. The glass-holding space S1 is in communication with the outdoors through the first outside air intake hole 41 and the second outside air intake hole 42 provided in the lower frame 32.

[0047] As shown in Figures 3, 6, and 7, the butt joint frame 37 includes an outer frame wall 371 on the outdoor side, an inner frame wall 372 on the indoor side, a pair of connecting walls 373 and 374 that connect the outer frame wall 371 and the inner frame wall 372, an intermediate wall 375 that connects the pair of connecting walls 373 and 374 at approximately the midpoint in the indoor-outdoor direction Z, and a pair of butt joint pieces 376 that project from the outer connecting wall 374 of one butt joint frame 37A toward the other butt joint frame 37B in the width direction X.

[0048] The butt joint frame 37 has two hollow sections separated in the indoor / outdoor direction Z by an intermediate wall 375, each penetrating in the vertical direction Y. Of the two hollow sections, the one on the indoor side is the indoor hollow section, and the one on the outdoor side is the fourth hollow section F4.

[0049] Each butt joint frame 37A and 37B is provided with a butt joint portion that forms a first hollow portion F1 enclosed on all four sides in the indoor / outdoor direction Z and the width direction X when the butt joint frames 37A and 37B are butted together. Inside the first hollow portion F1 of the butt joint portion, a convex member 38 is provided, whose horizontal cross-section is formed in a U shape along the entire length in the vertical direction Y. The convex member 38 is made of metal, for example. The convex member 38 has a pair of projections 381 that protrude from one butt joint frame 37A toward the other butt joint frame 37B, and a connecting piece 382 that connects the pair of projections 381 together. The convex member 38 is held between the pair of butt joints 376 with the U-shaped open side facing toward the other butt joint frame 37B. When the butt joint frames 37A and 37B are joined together, the projection 381 makes airtight contact with the airtight seal 376A provided on the butt joint 376.

[0050] As shown in Figures 7 and 8, in the first hollow section F1, a sheet-like first heat-expanded material 51 is provided on the visible surface 381a of the indoor-facing projection piece of a pair of protruding pieces 381 of a convex member 38 provided on one butt joint frame 37A, the visible surface 382a of the connecting piece 382 facing the other butt joint frame 37B, and the visible surface 374a between the pair of butt joint pieces 376 on the outer connecting wall 374 of the butt joint frame 37B opposite to the butt joint frame 37A on which the convex member 38 is provided. The first heat-expanded material 51 is provided continuously over the entire length in the vertical direction Y of the butt joint frames 37A and 37B. The first heat-expanded material 51 is fixed to the mounting surface, for example, with double-sided tape. Multiple sheets of the first heat-expanded material 51 may be laminated. The foaming temperature of the first heat-expanded material 51 can be set to an appropriate optimal temperature.

[0051] The foamed first heat-foamed material 51 is arranged to be continuously connected to the foamed fourth heat-foamed material 54 provided in the fourth hollow section F4 through screw holes 474b (see Figure 6) formed in the connecting wall 474 that constitutes the fourth hollow section F4.

[0052] The butt joint frame 37 has a fourth hollow section F4 formed adjacent to the glass retaining groove 45 that holds the glass panel 40 of the inner sash 3A in the width direction X. The fourth hollow section F4 is formed in a hollow shape, extending in the vertical direction Y along the outer frame wall 371 between the outer frame wall 371 and the inner frame wall 372. The fourth heat-expanded material 54 is provided on at least one of the visible surface and the depth surface of the fourth hollow section F4.

[0053] As shown in Figures 3, 6, and 7, a sheet-like fourth heat-expanded material 54 is provided on the opposing facing surfaces and opposing depth surfaces within the fourth hollow section F4 of the butt joint frames 37A and 37B. The fourth heat-expanded material 54 is provided on the upper and lower parts of the butt joint frame 37B in the vertical direction Y. The fourth heat-expanded material 54 is fixed to the mounting surface, for example, with double-sided tape. Multiple sheets of the fourth heat-expanded material 54 may be laminated together. The foaming temperature of the fourth heat-expanded material 54 can be set to an optimal temperature as appropriate.

[0054] The foamed fourth heat-foamed material 54 is arranged to be continuously connected to the first heat-foamed material 51 of the first hollow section F1 through screw holes 474b formed in the outer connecting wall 374 that forms the fourth hollow section F4. Furthermore, the fourth heat-foamed material 54 is arranged so that the lower part of the fourth heat-foamed material 54 is continuously connected to the second heat-foamed material 52 provided in the second hollow section F2 during foaming, and the upper part of the fourth heat-foamed material 54 is continuously connected to the third heat-foamed material 53 provided in the third hollow section F3.

[0055] As shown in Figures 9 and 10, the butt joint frame 37 of the shoji screen 3 may be provided with an L-shaped partition fitting 39 that divides the fourth hollow section F4 in the vertical direction Y. Figures 9 and 10 show the lower part of the butt joint frame 37. The partition fitting 39 has a plate-shaped plate material 391 that extends in the vertical direction Y, and a partition plate 392 perpendicular to the vertical end of the plate material 391 in the vertical direction Y. The partition fitting 39 is positioned such that the plate surface of the plate material 391 abuts against the inner connecting wall 373, and the partition fitting 39 is fixed to the inner connecting wall 373 using assembly screws 393 used to assemble the butt joint frame 37 to the upper frame 34 and lower frame 35, so that the partition plate 392 closes the fourth hollow section F4 in the vertical direction Y. A fourth heat-expanded foaming material 54 is attached to the surface 391a of the plate material 391 that faces the outer connecting wall 374.

[0056] By providing the partition fitting 39 in the fourth hollow section F4, the vertical direction Y of the fourth hollow section F4 can be sufficiently sealed, and the foaming area of ​​the fourth heat-foamed material 54 can be restricted to a predetermined range. The partition fitting 39 also serves to reinforce the assembly screw 393, thus ensuring strong joint strength.

[0057] The operation of the sliding sash window 100 (joinery) will be explained in detail based on Figures 1 to 8.

[0058] The sliding sash window 100 comprises a frame 2 provided in the opening of a building and framed on all four sides, and a plurality (4) of sashes 3 supported by the frame 2 so as to be movable from side to side. Two inner sashes 3A are butted against each other with abutting frames 37A and 37B. Each abutting frame 37A and 37B is provided with a butt joint that forms a first hollow section F1 enclosed on all four sides in the indoor / outdoor direction Z and the width direction X when the abutting frames 37A and 37B are butted against each other. A first heat-expanded material 51 is provided on the visible surface of the abutting joint.

[0059] In the sliding sash 100, the first heat-expandable material 51 can be expanded throughout the entire first hollow section F1 of the abutting joint during a fire. This enhances the fire resistance of the abutting frames 37A and 37B in the center of the width direction of the four sashes 3, which are particularly susceptible to fire. In this case, since only the first heat-expandable material 51 is provided in the first hollow section F1, the number of components is reduced, resulting in a simpler structure and improved workability.

[0060] In the sliding sash 100, since the first heat-expanded foam material 51 is provided on the visible surfaces of the butt joint frames 37A and 37B, the gap created when both butt joint frames 37A and 37B curve in the in-plane direction at the center in the vertical direction and open in the width direction X between them can be sealed by the expanded first heat-expanded foam material 51. In this way, unlike the meeting joint frame, the fire resistance performance of the butt joint frames 37A and 37B, which are not constrained in the in-plane direction by metal fittings, can be improved in the sliding sash 100.

[0061] In the sliding sash window 100, a second heat-expandable material 52 is provided on at least one of the visible surface and the visible surface of the second hollow section F2 formed by the lower frame 22 of the frame body 2 and the lower rail 35 of the inner sash 3A. In the sliding sash window 100, in the event of a fire, the second heat-expandable material 52 can be expanded throughout the entire second hollow section F2 formed in the lower frame 22 and the lower rail 35. This enhances the fire resistance of the lower part of the four sashes 3, which are particularly vulnerable to fire. In particular, when the abutting joint is the inner sash 3A, the lower frame 22 is exposed to the outside and is susceptible to the heat of the fire, making the provision of the second heat-expandable material 52 particularly effective. By providing the second heat-expandable material 52 in addition to the first heat-expandable material 51 in the first hollow section F1, the fire resistance can be further enhanced. Furthermore, in this case, since only the second heat-foamed material 52 is provided in the second hollow section F2, the number of components is reduced, a simple structure can be realized, and workability can be improved.

[0062] In the sliding sash window 100, the third hollow section F3, which is formed by being surrounded by the upper frame 21 of the frame body 2 and the upper rail 34 of the inner sash 3A, is provided with a third heat-expandable material 53 on at least one of the visible surface and the visible surface. Therefore, the third heat-expandable material 53 can be expanded throughout the entire third hollow section F3 formed in the upper frame 21 and the upper rail 34, thereby improving fire resistance.

[0063] In the sliding sash 100, a fourth hollow section F4 is formed adjacent in the width direction X to the glass retaining groove 45 that holds the glass panel 40 of the inner sash 3A in the butt joint frame 37, and a fourth heat-expandable material 54 is provided in at least one of the visible surface and the visible surface of the fourth hollow section F4, so that the fourth heat-expandable material 54 can be expanded within the fourth hollow section F4, thereby improving fire resistance. In this case, since the fourth heat-expandable material 54 is provided in addition to the first heat-expandable material 51 in the first hollow section F1, the fire resistance of the butt joint frame 37 in the width direction of the center of the four sashes 3, which are susceptible to fire, can be further improved.

[0064] In the sliding sash 100, the first heat-expanded foaming material 51 is continuously provided along the entire length of the first hollow section F1 in the vertical direction Y of the butt joint, so that the first heat-expanded foaming material 51 can be more reliably expanded throughout the entire first hollow section F1, thereby improving fire resistance.

[0065] In the sliding sash window 100, the second heat-expanded foaming material 52 is continuously provided along the entire length of the width direction X in the second hollow section F2, so that the second heat-expanded foaming material 52 can be more reliably expanded throughout the entire second hollow section F2, thereby improving fire resistance.

[0066] In the sliding sash 100, since adjacent hollow sections are continuously connected, it is possible to prevent gaps from forming in the heat-foamed material between, for example, the butt joint 37 and the upper frame 21 and upper frame 34, or between the butt joint 37 and the lower frame 22 and lower frame 35, thereby achieving superior fire resistance.

[0067] In the sliding sash window 100, the third heat-expanded foaming material 53 is continuously provided along the entire length of the third hollow section F3 in the width direction X, so that the third heat-expanded foaming material 53 can be more reliably expanded throughout the entire third hollow section F3, thereby improving fire resistance.

[0068] In the sliding sash window 100, the fourth heat-expanded foam material 54 is provided at the upper and lower parts in the vertical direction Y of the fourth hollow section F4. In this case, the fire resistance of the upper and lower parts of the frame 2 side, which are susceptible to heat in the fourth hollow section F4, can be improved, and the amount of the fourth heat-expanded foam material used can be reduced, resulting in a simpler structure.

[0069] The sliding sash window 100 according to this embodiment can achieve a simple structure by reducing the number of components, thereby improving ease of installation and enhancing fire resistance.

[0070] The embodiments of the building components described herein have been explained above, but this disclosure is not limited to the embodiments described above.

[0071] In the above embodiment, a four-panel sliding sash 100 having two central inner sashes 3A is used as an example of a building fixture, but the invention is not limited to these fixtures. For example, a sliding sash with a pair of outer sashes 3B fixed on both sides in the width direction and two inner sashes 3A having butt joints 37A, 37B may also be applied to the building fixture of the present invention. In short, the invention is applicable to building fixtures in which at least two of the sashes 3 have butt joints 37A, 37B and are butted against each other. In this embodiment, the inner sashes 3A are used as the sashes having butt joints 37A, 37B, but outer sashes 3B may also be used.

[0072] In the sliding sash 100 of the above embodiment, the first heat-expanded foam material 51 is provided in the first hollow section F1 formed in the butt joint frames 37A and 37B, the second heat-expanded foam material 52A and 52B are provided in the second hollow section F2 formed in the lower frame 22 and lower frame 35, the third heat-expanded foam material 53A and 53B are provided in the third hollow section F3 formed in the upper frame 21 and upper frame 34, and the fourth heat-expanded foam material 54 is provided in the fourth hollow section F4 formed in the butt joint frames 37A and 37B. However, it is not limited to providing all of these heat-expanded foam materials 51 to 54. For example, it may be a sash in which only the first heat-expanded foam material 51 in the first hollow section F1 or only the second heat-expanded foam material 52 in the second hollow section F2 is provided, or it may be a sash in which only the first heat-expanded foam material 51 and the second heat-expanded foam material 52 are provided. In addition, in the sliding sash 100 of the above embodiment, it is also possible to omit only the third heat-foamed material 53, or to omit only the fourth heat-foamed material 54.

[0073] Each of the heat-foaming materials 52 to 54, excluding the first heat-foaming material 51 in the above embodiment, only needs to be provided on at least one of the visible surface and the internal surface, and is not limited to the arrangement in the above embodiment.

[0074] In the above embodiment, the first heat-foamed material 51 is continuously provided along the entire length of the first hollow portion F1 of the butt joint in the vertical direction Y, but the invention is not limited to this, and the material may be partially and intermittently arranged in the vertical direction Y.

[0075] In the above embodiment, the second heat-foamed material 52 is continuously provided along the entire length of the width direction X in the second hollow portion F2, but the invention is not limited to this, and may be configured to be intermittently and partially arranged in the width direction X.

[0076] In the above embodiment, the third heat-foamed material 53 is continuously provided along the entire length of the width direction X in the third hollow portion F3, but the invention is not limited to this, and may be configured to be intermittently and partially arranged in the width direction X.

[0077] In this embodiment, adjacent hollow sections are continuously connected, for example, the fourth heat-foamed material 54 of the fourth hollow section F4 and the second heat-foamed material 52 of the second hollow section F2 of the lower frame 22 and lower stile 35. However, a configuration in which they are not continuously connected is also possible. A configuration in which the fourth heat-foamed material 54 of the fourth hollow section F4 and the third heat-foamed material 53 of the third hollow section F3 of the upper frame 21 and upper stile 34 are not continuously connected is also possible.

[0078] The fourth heat-foaming material 54 is provided at the upper and lower parts in the vertical direction of the fourth hollow section, but is not limited to these positions.

[0079] The thickness, length, mounting position, and other configurations of each heat-foamed material 51, 52, 53, and 54 are not limited to the above embodiment and can be modified as appropriate.

[0080] Furthermore, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, without departing from the spirit of this disclosure. [Explanation of symbols]

[0081] 100...Sliding sash (door / window), 2...Frame, 3...Sash, 3A...Inner sash, 3B...Outer sash, 30A, 30B...Frame, 31, 34...Upper frame, 32, 35...Lower frame, 33...Vertical frame, 36...Meeting stile, 37, 37A, 37B...Butt stile, 51...First heat-expanded material, 52...Second heat-expanded material, 53...Third heat-expanded material, 54...Fourth heat-expanded material, F1...First hollow section, F2...Second hollow section, F3...Third hollow section, F4...Fourth hollow section, X...Width direction, Y...Vertical direction, Z...Indoor / outdoor direction

Claims

1. A frame structure that is installed in the opening of the building and frames all four sides, The frame comprises a plurality of sliding doors supported so as to be movable from side to side, Of the aforementioned plurality of shoji screens, at least two shoji screens have abutting frame and are butted against each other. Each of the aforementioned butt joints is provided with a butt joint portion that forms a first hollow portion enclosed on all four sides in the depth direction and the facing direction when the two butt joints are joined together. A first heat-foamed material is provided on the visible surface of the abutting portion. In the second hollow portion formed by being surrounded by the lower frame of the frame body and the lower frame of the sliding door, a second heat-expanded foaming material is provided on at least one of the visible surface and the visible surface. The aforementioned butt joint frame has a fourth hollow portion formed adjacent in the width direction to the glass retaining groove that holds the glass panel of the shoji screen, The fourth hollow portion is provided with a fourth heat-foamed material on at least one of the visible surface and the internal surface. The first heat-foaming material and the second heat-foaming material are arranged to be continuously connected to the fourth heat-foaming material during foaming.

2. One of the butt joint frames is fitted with a metal convex member having a projection that protrudes toward the other butt joint frame, The convex member has a projection surface and a facing surface that extend along the entire length of one of the butt joint frames. A heat-expanding material is attached to the aforementioned surface and the aforementioned surface. The joinery according to claim 1, wherein the first heat-foamed material is attached to the other butt joint frame.

3. The joinery according to claim 2, wherein the convex member has notches on the visible surfaces of the upper and lower ends.

4. In the third hollow portion formed by being surrounded by the upper frame of the frame body and the upper frame of the sliding door, a third heat-expanded foaming material is provided on at least one of the visible surface and the visible surface. The joinery according to any one of claims 1 to 3.

5. The first heat-foamed material is provided continuously along the entire length in the vertical direction of the first hollow portion of the butt joint. The joinery according to any one of claims 1 to 3.

6. The second heat-foaming material is provided continuously along the entire length in the width direction of the second hollow portion. The joinery according to any one of claims 1 to 3.

7. The adjacent hollow sections are continuously connected. The joinery according to any one of claims 1 to 3.

8. The third heat-foamed material is provided continuously along the entire length in the width direction of the third hollow portion. The joinery according to claim 4.

9. The adjacent hollow sections are continuously connected. The joinery according to claim 4.

10. The fourth heat-foaming material is provided at the upper and lower parts in the vertical direction of the fourth hollow portion. The joinery according to claim 5.

11. The adjacent hollow sections are continuously connected. The joinery according to claim 5.

12. It is a four-panel sliding sash window with two of the aforementioned sashes in the center. The joinery according to any one of claims 1 to 3.

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