JP7633076B2 - Fittings - Google Patents

Description

Applicable under Article 30, Paragraph 2 of the Patent Act. Sale date: January 6, 2021. Sale location: Okuda Construction Co., Ltd. 415 Nayacho, Shimogyo-ku, Kyoto City, Kyoto Prefecture. Sale date: January 6, 2021. Sale location: Zenitaka Corporation 1-7-3 Awaza, Nishi-ku, Osaka City, Osaka Prefecture. Sale date: January 27, 2021, March 24, 2021. Sale location: Uchino Construction Co., Ltd. 1-21 Kamezawa, Sumida-ku, Tokyo. Sale date: January 28, 2021, February 9, 2021, February 17, 2021. Sale location: Takamatsu Construction Co., Ltd. 2-1-1 Shinchiba, Chuo-ku, Chiba City, Chiba Prefecture. Sale date: February 1, 2021, February 10, 2021, February 25, 2021, March 11, 2021. Sale location: Nakayama Construction Co., Ltd. 1-16-35 Takadanobaba, Shinjuku-ku, Tokyo Date of sale: February 15, 2021 Location of sale: Hinaya Construction Co., Ltd. 2-1-3 Kinpo-cho, Gifu City, Gifu Prefecture Date of sale: February 17, 2021 Location of sale: Sanko Sangyo Co., Ltd. 20 Saeki Shimotoge, Hieta-cho, Kameoka City, Kyoto Prefecture Date of sale: February 19, 2021 Location of sale: Takamatsu Construction Co., Ltd. 3-20-3 Nakakasai, Edogawa-ku, Tokyo Date of sale: March 1, 2021 Location of sale: Takamatsu Techno Service Co., Ltd. 4-22-15 Taishido, Setagaya-ku, Tokyo Date of sale: March 2, 2021 Location of sale: Shinozaki Construction Co., Ltd. 1-5-2 Mita, Meguro-ku, Tokyo Date of sale: March 4, 2021 Location of sale: Crust Co., Ltd. 1-183 Miyahara-cho, Kita-ku, Saitama City, Saitama Prefecture Date of sale: March 5, 2021 Sold at Hayashi Construction Co., Ltd. 5-16-1 Minamitsukaguchicho, Amagasaki City, Hyogo Prefecture Sold on March 11, 2021 Sold at IXSIM Communications Co., Ltd. 3-14-15 Higashinakano, Nakano Ward, Tokyo Sold on March 26, 2021 Sold at Soubi Kenchiku Kikaku Co., Ltd. 140 Shojocho, Ogawa-dori Sanjo Sagaru, Nakagyo Ward, Kyoto City, Kyoto Prefecture

The present invention relates to a fitting with two shoji screens attached to a frame, and in particular to a fitting in which at least one of the shoji screens is fixed to the frame via a frame.

Some fixtures that have an inner and outer screen on a frame body have a fixed piece between the frame of the inner screen and the frame of the frame body, and the frame and frame are fixed via the fixed piece to configure the inner screen as a fixed window (see, for example, Patent Document 1).

JP 2010-24621 A

However, when this type of fitting is exposed to high temperatures due to a fire or other event, the frames and stiles, which are 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 could be created inside or outside the room, and therefore there is a demand for further improvements in fire resistance.

In view of the above, the present invention aims to provide a fixture that can improve fire resistance.

In order to achieve the above object, the fitting according to the present invention comprises a first shoji screen at one edge side in the projection direction of a frame body, and a second shoji screen at the other edge side of the frame body, the first shoji screen is constructed by attaching a frame to each of the four periphery of a face material, and is fixed to the frame body via the frame, the first shoji screen comprises a double-glazed panel having glass joined via a spacer member as the face material, the double-glazed panel is attached to the vertical frame with its edge accommodated in a glass accommodation groove provided in the vertical frame, the vertical frame constituting the frame body has a vertical frame rail portion provided along the longitudinal direction at a portion facing the vertical frame of the first shoji screen, and guide wall portions are provided along the longitudinal direction of the vertical frame rail portion on both sides of the vertical frame rail portion on the projection surface of the vertical frame of the first shoji screen, the first shoji screen is configured to have a structure in which a guide wall portion and a vertical frame rail portion are disposed between the guide wall portion and the vertical frame. The first shoji screen is fixed to the frame body by providing a fixing member between the frame and the first frame, an air inlet hole communicating with the glass storage groove is provided in the portion of the vertical frame between the guide wall portions, and a thermal expansion member is arranged in the space corresponding to the air inlet hole formed between the guide wall portions and the vertical frame, the upper frame that constitutes the frame body has an upper frame rail portion along its length in a portion facing the upper frame of the first shoji screen, and the upper frame of the first shoji screen has a guide wall portion along its length so as to face the upper frame rail portion, and the guide wall portion has a series of connecting pieces and bending pieces 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 bending piece of the upper frame and the upper frame, and a thermal expansion member is arranged in the space formed between the connecting piece and the upper frame rail portion .

According to the present invention, when the fittings are exposed to high temperatures, the thermally expandable member expands inside the space between the vertical frame and the vertical stile, sealing 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 the guide wall of the vertical stile, even if the vertical frame or vertical stile is thermally deformed after the thermally expandable member expands, there is no risk of a gap being created between them, which is advantageous in terms of fire resistance.

FIG. 1 is a view of a fitting according to an embodiment of the present invention as seen from the inside of a room. FIG. 2 is a vertical cross-sectional view of the fixture shown in FIG. 1 . FIG. 2 is a cross-sectional view of the fixture shown in FIG. 1 . FIG. 2 is an exploded perspective view showing the frame body and the first screen of the fitting shown in FIG. 1 . 2 shows the upper frame of the first shoji screen to be applied to the fitting shown in FIG. 1, where (a) is an end view, (a) is a view from the inside of the room, and (c) is a plan view. 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, (a) is a view from the glass receiving groove side, and (c) is a view from the inside of the room. This is a cross-sectional view of the main parts showing a modified example of the fitting.

Below, a preferred embodiment of the fittings according to the present invention will be described in detail with reference to the attached drawings. For convenience, the terms "prospect direction" and "finding direction" will be used below. The prospect direction is the direction along the depth of the fittings, as shown by arrow A in the figure. A surface along the prospect direction may be referred to as a "prospect surface." The prospect direction is the direction along the top and bottom perpendicular to the prospect direction in the case of an object that extends horizontally, such as a bottom frame. In the case of an object that extends vertically, such as a vertical frame, the horizontal direction perpendicular to the prospect direction is called the "finding direction." A surface along the prospect direction may be called a "finding surface."

Figures 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 rectangular 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, 12. The inner screen 20 is configured by providing vertical frames 22, 23 on the left and right edges of a rectangular panel 21, and attaching upper frames 24 and lower frames 25 to the parts between the vertical frames 22, 23 at the upper and lower edges of the panel 21. Similarly, the outer shoji screen 30 is constructed by providing vertical frames 32, 33 on both the left and right edges of the rectangular panel 31, and attaching upper and lower frames 34, 35 to the areas between the vertical frames 32, 33 on both the top and bottom edges of the panel 31. The vertical frames 11, 12, upper frame 13, and lower frame 14 that make up the frame body 10, and the vertical frames 22, 23, 32, 33, upper frames 24, 34, and lower frames 25, 35 that make up the shoji screens 20, 30 are extruded shapes formed from metals such as aluminum alloys, and are each constructed to have a cross-sectional shape that is almost uniform along the entire length along the longitudinal direction.

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 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 when viewed 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.

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 restrict movement of the smoke deflectors in the direction away from each other along the front direction. Even in this state, it is possible to move the outer screen 30 in the opening direction relative to the inner screen 20.

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

The frame body 10 of this embodiment is configured so that it can be used in common with sliding windows. The upper frame 13 of the frame body 10 has upper frame rail parts 13a and 13b at the parts corresponding to the inner upper frame 24 and the outer upper frame 34, respectively, and the lower frame 14 has lower frame rail parts 14a and 14b at the parts corresponding to the inner lower frame 25 and the outer lower frame 35, respectively. The upper frame rail parts 13a and 13b and the lower frame rail parts 14a and 14b are flat plates extending in the direction of sight, and are formed in 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. In contrast, in the lower 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.

The left and right vertical frames 11, 12 have vertical frame rail sections 11b, 12b on the inner peripheral surfaces facing each other at the flat vertical frame bases 11a, 12a that extend 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 only at the part 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 only at the part 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 parts that are almost the entire length of the vertical frames 11, 12.

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, a pull member 38 is disposed, which engages with the vertical frame rail portion 11b to pull 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 that extend along the projection direction, and are provided at multiple points along the length of the outer bottom frame 35 with their lower peripheral surfaces exposed to the outside.

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 a glass accommodation groove 31d integrally formed on the inner periphery, and the edge of the panel 31 is accommodated inside each glass accommodation groove 31d.

The outer screen 30 constructed as described above can move along the extension direction of the upper frame 13 and the lower frame 14 by placing 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 screen 30 is closed, the vertical frame rail portion 11b on the left vertical frame 11 enters between the two guide wall portions 32a 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 screen 20 described later.

In this state, the seal member 14c on the lower frame 14 abuts against the visible surface of the outer lower frame 35 facing the room, and the seal member 11c 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 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 on the left inner vertical frame 22 abuts against the right outer vertical frame 33, ensuring watertightness between them.

The inner shoji screen 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.

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. Sealing members 26 are arranged on the upper edges of the guide wall 24a, which face 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 arranged between the upper frame rail portions 13a and 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 that corresponds 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 left part of the connecting piece 24c, 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 that corresponds 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.

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 projection direction, toward the right side so that they are almost parallel to each other. The guide wall 23a on the outside of the room is flat and its dimension along the projection direction is set to be larger than the vertical frame rail part 12b on the right vertical frame 12. The guide wall 23a on the indoor side is flat and has almost the same dimensions as the guide wall 23a on the outdoor side, 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, a sealing abutment wall 23d is provided on the right inner vertical frame 23 at a part that is further indoors than the guide wall 23a on the indoor side.

As is clear from the figure, the inner screen 20 has a glass receiving groove 21d molded 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 screen 20, the edge of the panel 21 is received in the glass receiving groove 21d provided in the left inner vertical frame 22 from the outdoor side, and then the panel 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 panel 21. The right inner vertical frame 23, which forms the door end, has air inlet holes 23e to equalize the pressure inside the glass storage groove 21d with the outside air. As shown in Figure 6, the air inlet holes 23e of the inner vertical frame 23 are elongated holes that run vertically, and are formed at the upper and lower ends of the inner vertical frame 23.

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 can be, for example, a bracket base 40a that extends vertically and has mounting plate portions 40b bent at right angles at both the top and bottom ends. One of the mounting plate portions 40b can be attached to the lower frame 14 in advance, with the other mounting plate portion 40b protruding above the lower frame rail portion 14a.

From this state, if the screw member S1 is screwed into the connecting bracket 40 through the lower frame 14, the inner lower frame 25 can be fixed to the lower frame 14 through the connecting bracket 40. Also, if the screw member (fixing member) S2 is screwed into the bent portion 23c of the inner vertical frame 23 through the vertical frame 12, the inner vertical frame 23 can be fixed to the vertical frame 12, and if the screw member S3 is screwed into the upper frame 13 through 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 lower 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.

In the inner screen 20 fixed to the frame 10 as described above, the seal member 14d provided on the lower frame 14 abuts against the guide wall portion 25a provided on the interior 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 members 26 provided on the two guide walls 24a of the inner upper frame 24 abut 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.

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-flammable 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 are used that have a cross-sectional shape with a thin plate thickness relative to the width dimension. 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 the 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 along the vertical direction that is larger than the air introduction hole 23e, and is arranged at a position that includes 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 with double-sided tape or adhesive, and will not fall off the inner sash 20 accidentally.

In the case of a fitting constructed as described above, if it is exposed to high temperatures due to a fire or other cause, 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 thermal expansion 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 in the vertical frame 12 or the inner vertical frame 23 after the thermal expansion members 50A, 50B, 50C expand, there is no risk of a gap that could become a fire path between them, which is advantageous in terms of fire resistance.

Furthermore, in the above-mentioned fittings, an escape space 24X and an unfixed space 24Y are provided between the inner upper frame 24 and the upper frame 13. Therefore, even if thermal expansion occurs in the inner vertical frame 22 due to 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 thermal expansion members 50A, 50B of the inner upper frame 24 are arranged in the areas corresponding to the escape space 24X, the non-fixed space 24Y, and the door end escape space 24Z. When thermally expanded, they can reliably block the flame path created by the escape space 24X, the non-fixed space 24Y, and the door end escape space 24Z, eliminating the risk of them becoming a factor in the spread of fire in the event of a fire.

In addition, between the inner vertical frame 23 and the vertical frame 12, the two guide walls 23a abut against the projecting surface of the vertical frame 12 to form 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 that includes 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 it does not directly block the air inlet hole 23e, both ends of the space 60 formed between the inner vertical frame 23 and the vertical frame 12 are blocked by the thermally expanded thermally expandable member 50C, blocking communication between the glass storage groove 21d and the outside air. As a result, even if the spacer member 21a used as the face material 21 melts and flammable gas is generated in the glass storage groove 21d, this gas will not leak to the outside and will not cause a fire.

In the above embodiment, the fitting is exemplified in which the inner shoji 20 on the indoor side is fixed to the frame body 10 as the first shoji, but the present invention can also be applied to a fitting in which the outer shoji 30 on the outdoor side is fixed to the frame body 10 as the first shoji. In addition, the fixing structure is specifically described between the upper frame 13 and the upper frame 24 of the first shoji and between the lower frame 14 and the lower frame 25 of the first shoji, but the fixing structure between the upper frame 13 and the upper frame 24 and between the lower frame 14 and the lower frame 25 is not limited to that in the embodiment. Furthermore, the guide wall portion 23a having the bent portion 23c along the projection direction is exemplified, but the guide wall portion 23a does not necessarily have to have the bent portion 23c. For example, the vertical frame and the vertical frame may be connected by screwing a screw member along the projection direction through the guide wall portion into the vertical frame. Furthermore, in the above-mentioned embodiment, the thermal expansion member 50C is provided only on the vertical frame 23, but the thermal expansion member 50C may be provided only on the vertical frame 12, or the thermal expansion member 50C may be provided on both the vertical frame 23 and the vertical frame 12. Furthermore, in the above-mentioned embodiment, the guide wall portion 23a is abutted against the vertical frame 12 to form a sealed space 60 surrounded on all four sides, but the present invention is not necessarily limited to this. For example, as shown in the modified example in FIG. 7, the guide wall portion 23a' located on the outside of the interior vertical frame 23 is configured to have a shorter protruding dimension than the guide wall portion 23a on the indoor side, and the space 60' is configured so that a part of the outside of the exterior is open, and the same effect can be achieved. Note that in the modified example in FIG. 7, the same symbols are used for the same configurations as in the embodiment.

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 all four periphery of the face material and being fixed to the frame body via the frames, the vertical frame constituting the frame body has a vertical frame rail portion provided along its length at the portion facing the vertical frame of the first shoji screen, and the front surface of the vertical frame of the first shoji screen facing the vertical frame has guide wall portions provided along its length on both sides of the vertical frame rail portion, the first shoji screen being fixed by providing a fixing member between the guide wall portions and the vertical frame, and a thermally expandable member being arranged in the space formed between the guide wall portions and the vertical frames.
According to this invention, when the fittings are exposed to high temperatures, the thermal expansion member expands in the space between the vertical frame and the vertical stile, 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 the guide wall of the vertical stile, even if the vertical frame or the vertical stile undergoes thermal deformation after the thermal expansion member expands, there is no risk of a gap being created between them, which is advantageous in terms of fire prevention.

Furthermore, the present invention is characterized in that, in the above-mentioned fitting, the first shoji screen has double-glazed glass as the surface material, the double-glazed glass is attached to the vertical frame with its edge accommodated in a glass accommodating groove provided in the vertical frame, an air inlet hole communicating with the glass accommodating groove is provided in the portion of the vertical frame between the guide wall portions, and the thermally expandable member is provided at a position corresponding to the air inlet hole.
According to this invention, even if flammable gas is generated from resin inclusions such as spacer members interposed between double-glazed glass due to the building materials being exposed to high temperatures, the heat-expanding member can block communication between the air inlet hole and the outside air, eliminating the risk of flammable gas being released to the outside from the air inlet hole, which is advantageous in terms of fire resistance.

The present invention is also characterized in that, in the above-mentioned building fixture, the vertical frame has a bent portion bent in the projection direction at one extending end of the guide wall portion, and the fixing member is provided between the bent portion with the bent portion abutting the projection surface of the vertical frame, and the other guide wall portion has an extending edge abutted against the projection surface of the vertical frame.
According to this invention, since the fixing piece portion extends in the projection direction, there is no risk of the work of attaching the fixing member to the upper frame becoming complicated.

10 Frame, 12 Vertical frame, 12b Vertical frame rail, 20 Inner screen, 21 Face material, 21a Spacer member, 21d Glass storage groove, 23 Inner vertical frame, 23a, 23a' Guide wall, 23c Bending portion, 23d Sealing abutment wall, 23e Air inlet hole, 50C Thermal expansion member, 60, 60' Space, S2 Screw member

Claims (2)

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 first shoji screen is provided with a double-glazed glass panel in which glass is joined via a spacer member as the surface material,
The double-glazed glass is attached to the vertical frame with its edge accommodated in a glass accommodation groove provided in the vertical frame,
The vertical frame constituting the frame body has a vertical frame rail portion provided along the longitudinal direction in a portion facing the vertical frame of the first shoji screen,
The first shoji's vertical frame has a guide wall portion along the longitudinal direction on both sides of the vertical frame rail portion on the projected surface facing the vertical frame,
The first shoji screen is fixed to the frame body by providing a fixing member between the guide wall portion and the vertical frame,
An air inlet hole communicating with the glass receiving groove is provided in a portion of the vertical frame between the guide wall portions,
a thermal expansion member is disposed in a space between the guide wall portions and the vertical frame at a position corresponding to the air introduction hole ;
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 the longitudinal direction so as to face the upper frame rail portion, and the guide wall portion is provided with a connecting piece and a bending piece that are continuous along the longitudinal direction so as to extend upward,
The first shoji is fixed to the frame by providing a fixing member between the bent piece of the upper frame and the upper frame,
A fixture characterized in that a thermal expansion member is arranged in the space formed between the connecting piece and the upper frame rail portion . The vertical frame is provided with a bent portion bent in a projection direction at one extension end of the guide wall portion,
The fixing member is provided between the bent portion and the projecting surface of the vertical frame in a state where the bent portion is in contact with the projecting surface of the vertical frame,
The fixture according to claim 1, characterized in that the other of the guide walls has an extended edge abutted against the visible surface of the vertical frame .

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