Fittings

Abstract

To improve a fire retardant property.SOLUTION: A fixture comprises: an inner sash 20 at a frame body 10's portion to be on the indoor side; and an outer sash 30 at the frame body 10's portion to be on the outdoor side, the inner sash 20 being constructed by mounting respective stiles 22, 23, 24, 25 on four peripheries of a surface material 21 and being fixed to the frame body 10 via the upper stile 22. The frame body 10 comprises an upper frame 13 having a portion facing the upper stile 24 of the inner sash 20, the portion having an upper frame rail part 13a provided along a longer direction. On the upper stile 24 of the inner sash 20, a guide wall part 24a is provided along the longer direction so as to face the upper frame rail part 13a. On the guide wall part 24a, a connection piece 24c is integrally provided so as to extend upward. The inner sash 20 is fixed to the frame body 10 by providing a screw member S3 between the connection piece 24c of the upper stile 24 and the upper frame 13. A thermal expansive member 50A is disposed at the connection piece 24c's portion facing the upper frame rail part 13a.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fitting having two shoji screens on a frame body, and in particular to a fitting in which at least one of the shoji screens is fixed to the frame body via a frame. [Background technology]

[0002] Among fixtures that have an inner and outer screen on a frame body, there are those that configure the inner screen as a fixed window by, for example, placing a fixing piece between the frame of the inner screen and the frame of the frame body and fixing the frame and frame via the fixing piece (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-24621 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when this type of fitting is exposed to high temperatures due to a fire or the like, the frames and stiles made of metals such as aluminum alloys undergo thermal deformation, such as thermal expansion. As mentioned above, even in fittings in which the frame of the shoji screen and the frame of the frame body are fixed together, if the frame or stile undergoes thermal deformation, gaps will form between them, raising concerns that a flame path will be formed inside and outside the room, and therefore there is a demand for further improvements in fire resistance.

[0005] In view of the above-mentioned circumstances, an object of the present invention is to provide a fitting capable of improving fire resistance. [Means for solving the problem]

[0006] In order to achieve the above object, the fitting of the present invention comprises a first shoji screen on one edge side in the projection direction of a frame body, and a second shoji screen on the other edge side of the frame body, the first shoji screen being constructed by attaching a frame to each of the four periphery of a surface material, and being fixed to the frame body via the frames, the upper frame constituting the frame body has an upper frame rail portion provided along its length in a portion facing the upper frame of the first shoji screen, the upper frame of the first shoji screen has a guide wall portion provided along its length so as to face the upper frame rail portion, and the guide wall portion has a connecting piece provided along its length so as to extend upward, In addition, an escape space is provided at the end of the side corresponding to the vertical frame arranged in the joint, where the connecting piece is not provided, The first shoji screen is fixed to the frame body by providing a fixing member between the connecting piece of the upper frame and the upper frame, and a thermal expansion member is disposed in the space formed between the connecting piece and the upper frame rail portion. A thermal expansion member is disposed on a surface of the guide wall portion corresponding to the escape space, the surface facing the upper frame rail portion. It is characterized by the fact that Effect of the Invention

[0007] According to the present invention, when the fitting is exposed to high temperatures, the thermal expansion member arranged in the space between the upper frame rail part on the upper frame and the connecting piece on the upper frame expands, closing the gap between the two, eliminating the risk of a fire path being created inside or outside the room. Furthermore, since they are connected to each other by a series of connecting pieces along the length, even if the upper frame or upper frame is thermally deformed after the thermal expansion member expands, there is no risk of a gap being created between them, which is advantageous in terms of fire resistance. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a view of a fitting according to an embodiment of the present invention as seen from the inside of a room. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the fitting shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the fitting shown in FIG. 1. [Figure 4] FIG. 2 is an exploded perspective view showing the frame body and the first door of the fitting shown in FIG. [Diagram 5]This shows the upper frame of the first shoji screen to be applied to the fitting shown in Figure 1, where (a) is an end view, (b) is a view from inside the room, and (c) is a plan view. [Figure 6] This shows the vertical frame of the first shoji screen to be applied to the fitting shown in Figure 1, where (a) is an end view, (b) is a view from the glass receiving groove side, and (c) is a view from the inside of the room. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the fittings according to the present invention will be described in detail below with reference to the attached drawings. For convenience, the terms "visible direction" and "visible direction" will be used below. The "visible direction" is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the visible direction may be called a "visible surface." The "visible direction" is the direction perpendicular to the visible direction in the case of a lower frame or the like that extends horizontally. In the case of a vertical frame or the like that extends vertically, the horizontal direction perpendicular to the visible direction is called the "visible direction." A surface along the visible direction may be called a "visible surface."

[0010] 1 to 3 show a fitting according to an embodiment of the present invention. The fitting illustrated here comprises a frame 10, an inner screen (first screen) 20 arranged on the inside of the frame 10, and an outer screen (second screen) 30 arranged on the outside of the frame 10. The frame 10 is configured in a quadrangular shape by providing an upper frame 13 and a lower frame 14 between the upper and lower ends of the left and right vertical frames 11 and 12. The inner screen 20 is configured by providing vertical frames 22 and 23 on both the left and right edges of a rectangular surface material 21, and attaching an upper frame 24 and a lower frame 25 to the parts between the vertical frames 22 and 23 on both the upper and lower edges of the surface material 21. Similarly, the outer shoji screen 30 is constructed by providing vertical frames 32, 33 on both the left and right edges of a rectangular panel 31, and attaching an upper frame 34 and a lower frame 35 to the portions between the vertical frames 32, 33 at both the top and bottom edges of the panel 31. The vertical frames 11, 12, upper frame 13, and lower frame 14 that constitute the frame body 10, and the vertical frames 22, 23, 32, 33, upper frames 24, 34, and lower frames 25, 35 that constitute the shoji screens 20, 30 are extruded members formed from a metal such as an aluminum alloy, and are each constructed to have a cross-sectional shape that is approximately uniform over the entire length along the longitudinal direction.

[0011] The face material 21 of the inner screen 20 and the face material 31 of the outer screen 30 are double-glazed glass in which wire-reinforced glass 21b, 31b on the outside of the room and float glass 21c, 31c on the inside of the room are joined together in a mutually opposing state via spacer members 21a, 31a, respectively. The inner screen 20 is provided with a face material 21 that is larger in length and width than the face material 31 of the outer screen 30. In this embodiment, as shown in FIG. 1, the inner screen 20 is configured as a fixed window on the right side of the frame body 10 as viewed from the inside of the room. The outer screen 30 is arranged to be movable along the longitudinal direction of the upper frame 13 and the lower frame 14 relative to the frame body 10, and when it is arranged on the left side of the frame body 10 as viewed from the inside of the room, it is possible to close the opening of the frame body 10 together with the inner screen 20. When the outer screen 30 is closed, the vertical frame 33 located on the right side of the outer screen 30 as seen from inside the room and the vertical frame 22 located on the left side of the inner screen 20 are arranged side by side along the front direction. Smoke deflectors 22a and 33a are provided between the vertical frames 22 and 33, respectively, as well as a crescent 22b and a crescent receiver 33b.

[0012] The smoke deflector 33a provided on the vertical frame 33 of the outer screen 30 protrudes toward the room and then bends at a right angle toward the door end. The smoke deflector 22a provided on the vertical frame 22 of the inner screen 20 protrudes toward the outside from the visible surface facing the outside and then bends at a right angle toward the door end. When the outer screen 30 is closed, the smoke deflectors 22a, 33a are inserted between the vertical frames 22, 33, and function to limit the movement of the smoke deflectors in the direction away from each other along the projection direction. Even in this state, it is possible to move the outer screen 30 in the opening direction relative to the inner screen 20.

[0013] When the crescent 22b is locked while the outer door 30 is closed, the crescent 22b and the crescent receiver 33b engage with each other, locking the vertical frame 33 of the outer door 30 and the vertical frame 22 of the inner door 20, thereby preventing the outer door 30 from moving in the opening direction. In the following, in order to distinguish between the components of the outer door 30 and the components of the inner door 20, the components of the outer door 30 may be given the term "outside" and the components of the inner door 20 may be given the term "inside". For convenience, the components of the outer door 30 and the components of the inner door 20 will be identified as left and right when viewed from the inside of the room according to Figure 1.

[0014] The frame body 10 of this embodiment is configured so that it can be used in common with a sliding window. The upper frame 13 of the frame body 10 is provided with upper frame rail parts 13a, 13b at the parts corresponding to the inner upper frame 24 and the outer upper frame 34, respectively, and the lower frame 14 is provided with lower frame rail parts 14a, 14b at the parts corresponding to the inner lower frame 25 and the outer lower frame 35, respectively. The upper frame rail parts 13a, 13b and the lower frame rail parts 14a, 14b are each flat-shaped extending in the direction of sight, and are formed in the parts that are almost the entire length along the longitudinal direction of the upper frame 13 and the lower frame 14. In this embodiment, the upper frame rail part 13a on the indoor side and the upper frame rail part 13b on the outdoor side are provided at almost the same height position. On the other hand, in the outdoor frame 14, the lower frame rail part 14a on the indoor side is configured to be higher than the lower frame rail part 14b on the outdoor side.

[0015] The left and right vertical frames 11, 12 have vertical frame rail sections 11b, 12b provided on the inner peripheral surfaces facing each other in flat vertical frame base sections 11a, 12a extending along the front direction. The vertical frame 12 located on the right side as viewed from the inside of the room has the vertical frame rail section 12b provided only in the portion of the vertical frame base 12a that corresponds to the inner vertical frame 23. The vertical frame 11 located on the left side as viewed from the inside of the room has the vertical frame rail section 11b provided only in the portion of the vertical frame base 11a that corresponds to the outer vertical frame 32. These vertical frame rail sections 11b, 12b are flat and extend in the front direction, and are formed in portions that are almost the entire length of the vertical frames 11, 12 along their longitudinal directions.

[0016] The outer sash 30 has two guide walls 34a, 32a on the outer top frame 34 and the left outer vertical frame 32, which forms the door end, and is equipped with a door roller 36 on the outer bottom frame 35. The guide wall 34a of the outer top frame 34 extends upward from the edge located on the outside of the room and the edge located on the inside of the room of the outer top frame base 34b, which is a square tube, so as to be approximately parallel to each other. The upper edge of the guide wall 34a is provided with a seal member 37. The guide wall 32a of the outer vertical frame 32 extends toward the left side from the edge located on the outside of the room and the part located on the inside of the room at the left end of the outer vertical frame base 32b, which is an irregular tube, so as to be approximately parallel to each other. Between the guide wall portions 32a, there is disposed a drawing member 38 which engages with the vertical frame rail portion 11b to draw the outer screen 30 toward the interior of the room relative to the frame body 10. Although not shown in the figure, the door rollers 36 are disposed rotatably inside the outer bottom frame 35 via axles extending along the projection direction, and are provided at multiple points along the longitudinal direction of the outer bottom frame 35 with their lower peripheral surfaces exposed to the outside.

[0017] As is clear from Figures 2 and 3, the left and right outer vertical frames 32, 33, the outer upper frame 34, and the outer lower frame 35 of the outer screen 30 all have glass accommodating grooves 31d integrally molded on the inner periphery, and the edge of the panel 31 is accommodated inside each glass accommodating groove 31d.

[0018] The outer sash 30 constructed as above can move along the extension direction of the upper frame 13 and the lower frame 14 by arranging the upper frame rail portion 13b between the two guide wall portions 34a of the outer upper frame 34 and placing the door roller 36 on the upper edge of the lower frame rail portion 14b so that it can roll. When the outer sash 30 is closed, the vertical frame rail portion 11b provided on the left vertical frame 11 enters between the two guide wall portions 32a provided on the left outer vertical frame 32, and the left outer vertical frame 32 is drawn toward the inside of the room. Furthermore, when the crescent 22b is operated from this state to engage with the crescent receiver 33b, the right outer vertical frame 33 is drawn toward the inner vertical frame 22 located on the left side of the inner sash 20 described later.

[0019] In this state, the seal member 14c provided on the lower frame 14 abuts against the facing surface of the outer lower frame 35 facing the room, and the seal member 11c provided on the left vertical frame 11 abuts against the guide wall portion 32a located on the room inside of the outer vertical frame 32, ensuring watertightness between them. In addition, between the outer upper frame 34 and the upper frame 13, the seal members 37 provided on the two guide wall portions 34a of the outer upper frame 34 abut against both side surfaces of the upper frame rail portion 13b, ensuring watertightness between them. Furthermore, the seal member 22c provided on the left inner vertical frame 22 abuts against the right outer vertical frame 33, ensuring watertightness between them.

[0020] The inner sash 20 has two guide walls 25a, 24a, 23a on each of the inner bottom frame 25, the inner top frame 24, and the inner vertical frame 23 on the right side that forms the door edge. The guide wall 25a of the inner bottom frame 25 extends downwards, approximately parallel to each other, from the edge located on the outside of the room and the part located on the inside of the room at the lower end of the inner bottom frame base 25b, which is a square tube.

[0021] The guide wall 24a of the inner upper frame 24 extends upward from the edge located on the outside of the room and the part located on the inside of the room at the upper end of the inner upper frame base 24b, which is a flat plate along the projection direction, so as to be approximately parallel to each other. The upper edge of the guide wall 24a is provided with a seal member 26 at each of the upper edges facing each other. As is clear from the figure, the guide wall 24a provided on the outside of the room is provided with a connecting piece 24c. The connecting piece 24c extends upward from the upper edge of the guide wall 24a and has a bent portion 24d at the upper edge. The bent portion 24d extends in the projection direction toward the outside of the room and is formed to a size that allows it to be disposed between the upper frame rail portions 13a, 13b. In this embodiment, as shown in Figures 4 and 5, an escape space 24X is provided in the part of the inner upper frame 24 corresponding to the inner vertical frame 22 on the left side, and a connecting piece 24c is provided only in the part to the right of the escape space 24X. In addition, a non-fixing space 24Y is provided in the part of the connecting piece 24c located on the left side, and a bent portion 24d is provided only in the part to the right of the non-fixing space 24Y. Furthermore, a door-end side escape space 24Z is provided in the part of the inner upper frame 24 corresponding to the right inner vertical frame 23, and the connecting piece 24c and the bent portion 24d are provided only in the part to the left of the door-end side escape space 24Z.

[0022] As shown in FIG. 6, the guide wall 23a of the inner vertical frame 23 extends from the edge located on the outside of the room and the part located on the inside of the room at the right end of the inner vertical frame base 23b, which is a flat plate along the front direction, toward the right side so as to be almost parallel to each other. The guide wall 23a provided on the outside of the room is flat, and the dimension along the front direction is set to be larger than the vertical frame rail part 12b provided on the right vertical frame 12. The guide wall 23a provided on the indoor side is flat and has almost the same dimensions as the guide wall 23a on the outside of the room, and has a bent part 23c on the extended edge. The bent part 23c is bent at an almost right angle toward the room. In addition, the right inner vertical frame 23 has a sealing abutment wall 23d provided in a part that is further inside the room than the guide wall 23a on the indoor side.

[0023] As is clear from the figure, the inner sash 20 has a glass receiving groove 21d formed integrally only on the inner periphery of the left inner vertical frame 22. The right inner vertical frame 23, inner upper frame 24, and inner lower frame 25 all have glass support pieces 21e only on the indoor side, while the outside of the room has a bezel mounting portion 21f. In other words, in the inner sash 20, the edge of the face material 21 is received in the glass receiving groove 21d provided in the left inner vertical frame 22 from the outdoor side, and then the face material 21 is abutted against the glass support pieces 21e of the right inner vertical frame 23, inner upper frame 24, and inner lower frame 25, and the bezel 21g is attached to each bezel mounting portion 21f, thereby supporting the face material 21. The right inner vertical frame 23, which forms the door end, is provided with air inlet holes 23e to equalize the pressure inside the glass receiving groove 21d with the outside air. The air inlet holes 23e of the inner vertical frame 23 are elongated holes extending vertically, as shown in FIG. 6, and are formed at the upper and lower ends of the inner vertical frame 23.

[0024] To fix the inner screen 20 configured as above to the frame body 10, first, remove the surface material 21 and place the inner screen 20 inside the frame body 10, and place it on the upper surface of the connecting bracket 40 previously attached to the lower frame 14. That is, place the upper frame rail portion 13a between the two guide wall portions 24a of the inner upper frame 24, and place the vertical frame rail portion 12b between the two guide wall portions 23a of the inner vertical frame 23, and then place the lower frame 14 on the connecting bracket 40, so that the inner screen 20 is placed inside the frame body 10. At this time, the inner vertical frame 23 is placed in a state where the extended edges of the two guide wall portions 23a are in contact with the expected surfaces that will be the inner periphery of the vertical frame 12. The connecting bracket 40 may, for example, have a bracket base 40a extending vertically and having mounting plate portions 40b bent at right angles at both the upper and lower ends thereof, and may be attached to the lower frame 14 in advance via one of the mounting plate portions 40b, with the other mounting plate portion 40b protruding upward beyond the lower frame rail portion 14a.

[0025] From this state, if the screw member S1 is screwed into the connecting bracket 40 via the lower frame 14, the inner bottom frame 25 can be fixed to the bottom frame 14 via the connecting bracket 40. Also, if the screw member S2 is screwed into the bent portion 23c of the inner vertical frame 23 via the vertical frame 12, the inner vertical frame 23 can be fixed to the vertical frame 12, and if the screw member (fixing member) S3 is screwed into the upper frame 13 via the bent portion 24d of the inner upper frame 24, the inner upper frame 24 can be fixed to the upper frame 13. After the inner bottom frame 25, the inner vertical frame 23, and the inner upper frame 24 are each fixed to the frame body 10, the surface material 21 can be supported by the above-mentioned method. A windstop plate 41 provided on the upper frame 13 is placed in the escape space 24X provided in the inner screen 20.

[0026] In the inner screen 20 fixed to the frame body 10 as described above, the seal member 14d provided on the lower frame 14 abuts against the guide wall portion 25a provided on the room side of the inner lower frame 25, and the seal member 12c provided on the right-side vertical frame 12 abuts against the sealing abutment wall portion 23d of the inner vertical frame 23, ensuring watertightness between them. In addition, between the inner upper frame 24 and the upper frame 13, the seal member 26 provided on the two guide wall portions 24a of the inner upper frame 24 abuts against both sides of the upper frame rail portion 13a, ensuring watertightness between them. Furthermore, as described above, the seal member 22c provided on the left inner vertical frame 22 abuts against the outer vertical frame 33 located on the right side of the outer screen 30, ensuring watertightness between them.

[0027] Furthermore, in order to improve the fire resistance of the inner sash 20, thermal expansion members 50A, 50B, 50C are arranged on the inner upper frame 24 and the right inner vertical frame 23. The thermal expansion members 50A, 50B, 50C are non-combustible or flame-retardant fire-resistant members that expand due to heat. For example, a thermally expandable graphite-containing foam material can be used as this type of thermal expansion member 50A, 50B, 50C. In this embodiment, elongated thermal expansion members 50A, 50B, 50C having a cross-sectional shape with a thin plate thickness relative to the width dimension are used. In the inner upper frame 24, as shown in FIG. 5, the thermal expansion member 50A is arranged on the surface facing the upper frame rail portion 13a at both ends of the portion extending vertically in the connecting piece 24c, and the thermal expansion member 50B is arranged on the mutually facing inner surfaces of the two guide wall portions 24a in the portion corresponding to the escape space 24X and the door end escape space 24Z. In the inner vertical frame 23, as shown in FIG. 6, the thermal expansion member 50C is provided on both upper and lower ends of the surface facing the indoor side of the guide wall portion 23a on the outdoor side. As is clear from the figure, the thermal expansion member 50C has a dimension larger than the air introduction hole 23e along the vertical direction, and is arranged at a position including the entire length of the air introduction hole 23e in the vertical direction. Although not shown in the figure, each thermal expansion member 50A, 50B, 50C is adhered by double-sided tape or adhesive, and will not fall off the inner sash 20 accidentally.

[0028] In the case of fittings constructed as described above, if exposed to high temperatures due to a fire or the like, the sealing members 11c, 12c, 14c, 14d, 22c, 26, 37 provided between the outer screen 30 and the frame body 10 and between the inner screen 20 and the frame body 10 will be burned. However, the thermally expandable members 50A, 50B, 50C interposed between the inner screen 20 and the frame body 10 will expand, preventing gaps from occurring between the inner screen 20 and the frame body 10. Furthermore, the inner upper frame 24 and the upper frame 13 are connected to each other by a connecting piece 24c that is continuous in the longitudinal direction and is integral with the inner upper frame 24, and the inner vertical frame 23 and the vertical frame 12 are connected to each other by a guide wall portion 23a that is continuous in the longitudinal direction and is integral with the inner vertical frame 23.Therefore, even if thermal deformation occurs in the upper frame 13 or the inner upper frame 24, or the vertical frame 12 or the inner vertical frame 23 after the thermal expansion members 50A, 50B, 50C expand, there is no risk of gaps that could serve as a fire path being created between them, which is advantageous in terms of fire resistance.

[0029] Furthermore, in the above-mentioned fittings, an escape space 24X and an unfixed space 24Y are secured between the inner upper frame 24 and the upper frame 13. Therefore, even if the inner vertical frame 22 expands due to heat caused by the effects of sunlight, etc., or the middle part of the upper frame 13 bends downward due to aging, these deformations are absorbed by the escape space 24X and the unfixed space 24Y. Therefore, during normal use, there is no concern that the inner vertical frame 22 of the inner sash 20 will bend outward. In addition, as described above, the thermally expandable members 50A, 50B of the inner upper frame 24 are arranged in the portions corresponding to the escape space 24X, the non-fixed space 24Y, and the door-end side escape space 24Z, so that when they thermally expand, it is possible to reliably block the flame paths created by these escape spaces 24X, the non-fixed space 24Y, and the door-end side escape space 24Z, and there is no risk of them becoming a factor in the spread of fire in the event of a fire.

[0030] In addition, between the inner vertical frame 23 and the vertical frame 12, the two guide walls 23a come into contact with the projecting surface of the vertical frame 12, forming a space 60 surrounded on all four sides. Therefore, the thermal expansion member 50C arranged on the inner vertical frame 23 expands inside this limited space 60, and it is possible to more reliably prevent a gap from occurring between the inner vertical frame 23 and the vertical frame 12. In addition, the thermal expansion member 50C provided on the inner vertical frame 23 is provided at a height position including the air introduction hole 23e. Therefore, when the fitting is exposed to high temperatures, the communication between the glass storage groove 21d of the inner sash 20 and the outside air through the air introduction hole 23e is blocked by the thermally expanding thermal expansion member 50C. That is, when the thermally expandable member 50C thermally expands, even if the air inlet hole 23e is not directly blocked, both ends of the space 60 defined between the inner vertical frame 23 and the vertical frame 12 are blocked by the thermally expanded thermally expandable member 50C, and communication between the glass housing groove 21d and the outside air is blocked. As a result, even if the spacer member 21a used as the face material 21 melts and flammable gas is generated in the glass housing groove 21d, this gas will not leak to the outside and will not cause a fire.

[0031] In the above embodiment, the fitting is exemplified in which the inner screen 20 on the indoor side is fixed to the frame body 10 as the first screen, but the present invention can also be applied to a fitting in which the outer screen 30 on the outdoor side is fixed to the frame body 10 as the first screen. In addition, the fixing structure is specifically described between the vertical frame 12 and the vertical frame 23 of the first screen and between the bottom frame 14 and the bottom frame 25 of the first screen, but the fixing structure between the vertical frame 12 and the vertical frame 23 and between the bottom frame 14 and the bottom frame 25 is not limited to that in the embodiment. Furthermore, the connecting piece 24c having the bent portion 24d along the projection direction is exemplified, but the connecting piece 24c does not necessarily have to have the bent portion 24d. For example, the upper frame and the upper frame may be connected by screwing a screw member along the projection direction into the upper frame via the connecting piece. Furthermore, in the above-mentioned embodiment, the thermal expansion members 50A, 50B are provided only on the upper frame 24, but the thermal expansion members may be provided only on the upper frame 13, or the thermal expansion members may be provided on both the upper frame 24 and the upper frame 13. In this case, it is not necessary to provide the thermal expansion member 50A on the front surface, and the thermal expansion member 50A may be provided on the front surface as long as it is the space 51 formed between the connecting piece 24c and the upper frame rail portion 13a. Furthermore, the connecting piece 24c is molded integrally with the guide wall portion 24a, but if it is continuous along the longitudinal direction, the connecting piece may be provided separately from the guide wall portion 24a. Furthermore, the thermal expansion members 50B are provided on each of the two guide walls 24a provided on the upper frame 24, but the thermal expansion member 50B may be provided on either one of the guide walls 24a.

[0032] As described above, the fitting of the present invention comprises a first shoji screen on one edge side in the front direction of the frame body, and a second shoji screen on the other edge side of the frame body, the first shoji screen being constructed by attaching frames to each of the four periphery of the face material and being fixed to the frame body via the frames, the upper frame that constitutes the frame body has an upper frame rail portion provided along its length at a portion facing the upper frame of the first shoji screen, the upper frame of the first shoji screen has a guide wall portion provided along its length so as to face the upper frame rail portion, and the guide wall portion has a series of connecting pieces provided along its length so as to extend upward, the first shoji screen is fixed to the frame body by providing a fixing member between the connecting piece of the upper frame and the upper frame, and a thermally expandable member is arranged in the space formed between the connecting piece and the upper frame rail portion. According to this invention, when the building material is exposed to high temperatures, the thermal expansion member arranged in the space between the upper frame rail part on the upper frame and the connecting piece on the upper frame expands, closing the gap between the two, eliminating the risk of a fire path being created inside or outside the room. Furthermore, because they are connected to each other by a series of connecting pieces along the length, even if the upper frame or upper frame is thermally deformed after the thermal expansion member expands, there is no risk of a gap being created between them, which is advantageous in terms of fire resistance.

[0033] Furthermore, the present invention is characterized in that, in the above-mentioned fitting, the thermal expansion member is provided at least at the end of the connecting piece that is on the joining side of the first shoji screen. According to this invention, a thermally expandable member is provided in the first screen in correspondence with the joining portion where thermal deformation is likely to occur, making it possible to more reliably prevent the occurrence of a fire path inside or outside the room.

[0034] The present invention is also characterized in that, in the above-mentioned fitting, the upper frame has an escape space where the connecting piece is not provided at the end corresponding to the vertical frame that is arranged in the joint, and a thermally expandable member is arranged on the surface facing the upper frame rail portion in the portion of the guide wall portion corresponding to the escape space. According to this invention, because an escape space is provided, even if the vertical frame that joins the screen expands due to heat or the center part of the upper frame deforms downward during normal use, the vertical frame can be prevented from bending in the outward direction of the screen. Moreover, because a thermal expansion member is provided in correspondence with the escape space, there is no risk of the escape space becoming a fire route.

[0035] The present invention is also characterized in that, in the above-mentioned building fixture, the guide wall portion is arranged to face both sides of the upper frame rail portion, and the guide wall portion has the thermal expansion member provided in at least one of the portions facing the upper frame rail portion. According to this invention, a thermal expansion member is provided on at least one of the guide wall portions provided on both sides of the upper frame rail portion, making it possible to more reliably improve fire resistance.

[0036] The present invention is also characterized in that, in the above-mentioned building fixture, the connecting piece is provided with a bent portion extending toward the projection direction, and the fixing member is provided between the bent portion and the projection surface of the upper frame with the bent portion abutted against the projection surface of the upper frame. According to this invention, since the bent portion extends in the projection direction, there is no risk of the work of attaching fixing members such as screw members to the upper frame becoming complicated. [Explanation of symbols]

[0037] 10 frame body, 13 upper frame, 13a upper frame rail portion, 20 inner screen, 21 face material, 24 inner upper frame, 24X escape space, 24a guide wall portion, 24c connecting piece, 24d bent portion, 26 sealing member, 50A, 50B thermal expansion member, 51 space, S3 screw member

Claims

1. A first shoji screen is provided on one edge side of a frame body in the projection direction, and a second shoji screen is provided on the other edge side of the frame body, and the first shoji screen is configured by attaching a frame to each of the four periphery of a surface material, and is fixed to the frame body via the frame. The upper frame constituting the frame body has an upper frame rail portion provided along the longitudinal direction in a portion facing the upper frame of the first shoji screen, The upper frame of the first shoji screen is provided with a guide wall portion along its length so as to face the upper frame rail portion, and the guide wall portion is provided with a continuous connecting piece along its length so as to extend upward, and an escape space is provided at the end portion corresponding to the vertical frame that is to be placed in the joining position where the connecting piece is not provided, The first shoji is fixed to the frame by providing a fixing member between the connecting piece of the upper frame and the upper frame, a thermal expansion member is disposed in a space defined between the connecting piece and the upper frame rail portion; A fixture characterized in that a thermal expansion member is arranged on the surface facing the upper frame rail portion in the portion of the guide wall corresponding to the escape space.

2. The fixture according to claim 1, characterized in that the thermal expansion member is provided at least at the end of the connecting piece that is on the joining side of the first screen.

3. The guide wall portions are provided on both sides of the upper frame rail portion so as to face each other, The fixture according to claim 1, characterized in that the thermal expansion member is provided in at least one of the portions of the guide wall portion that face the upper frame rail portion.

4. The fixture described in claim 1, characterized in that the connecting piece has a bent portion extending toward the projection direction, and the fixing member is provided between the bent portion and the projection surface of the upper frame with the bent portion abutted against the projection surface of the upper frame.

Images