Fitting

Abstract

To provide a fitting whose wind pressure resistance can be increased with its manufacturing costs suppressed.SOLUTION: An upper frame 21 of a frame body 2 has an intermediate facing plate portion 215 that prevents movement of an inner sliding sash 3 toward the outdoor side; a lower frame 22 of the frame body 2 has an inner sliding sash lower rail 221 that prevents movement of the inner sliding sash 3 toward the outdoor side. An upper frame reinforcing member 25 and a lower frame reinforcing member 26 are provided on the outdoor side of at least one of the intermediate facing plate portion 215 of the upper frame 21 and the inner sliding sash lower rail 221 of the lower frame 22. The upper frame reinforcing member 25 and the lower frame reinforcing member 26 have bases 253, 261a and indoor panels 254, 261b connected on the indoor side of the bases 253, 261a. The bases 253, 261a are fixed to either the upper frame 21 or the lower frame 22, and the indoor panels 254, 261b are positioned along the outdoor surface of either the intermediate facing plate portion 215 or the inner sliding sash lower rail 221.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to building materials. [Background technology]

[0002] Doors and windows installed on the upper floors of a building are required to have high wind pressure resistance. In the case of sliding sashes such as those disclosed in Patent Document 1, in order to increase wind pressure resistance, for example, the frame body and the stiles of the inner and outer shoji screens are made thicker to create a strong structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-163658 Summary of the Invention [Problem to be solved by the invention]

[0004] When the frames and stiles of building fixtures are thickened on the upper floors of a building, there is a problem of increased manufacturing costs. Also, when the fixtures installed on the upper floors of a building are different from those installed on the lower floors, there is a problem of complicated management.

[0005] The present disclosure aims to provide a building fixture that can increase wind pressure resistance while reducing manufacturing costs. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objectives, the building fixture of the present disclosure comprises a frame body provided on the edge of an opening in a main body, and an inner shoji screen and an outer shoji screen supported on the frame body, the upper and lower frames of the frame body each having a rail that restricts the movement of the inner shoji screen toward the outside, and a reinforcing member is provided on the outside side of the rail of at least one of the upper and lower frames, the reinforcing member having a base and an indoor panel portion connected to the indoor side of the base, the base being fixed to either the upper or lower frame, and the indoor panel portion being arranged along the outside surface of the rail. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the fitting of the first embodiment as seen from the indoor side. [Figure 2] FIG. 2 is a vertical cross-sectional view of the fitting of the first embodiment. [Figure 3] FIG. 2 is a horizontal cross-sectional view of the fitting of the first embodiment. [Figure 4] FIG. 3 is an enlarged view of part A in FIG. 2. [Figure 5] A view of the upper frame and upper frame reinforcement member from below. [Figure 6] FIG. [Figure 7] 3 is an enlarged view of part B in FIG. 2, showing a vertical cross-sectional view of the lower frame and the lower frame reinforcing member. [Figure 8] A plan view showing the lower frame and lower frame reinforcing member. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] A vertical cross-sectional view of the lower part of the fitting. [Figure 12] This is a diagram showing the handle attached to the door frame of an inner shoji screen. [Figure 13] FIG. 10 is a diagram showing a modified example of an aluminum-resin composite sash fitting according to the embodiment. [Figure 14] FIG. 10 is a vertical cross-sectional view of the fitting of the second embodiment. [Figure 15] FIG. 10 is a horizontal cross-sectional view of the fitting of the second embodiment. [Figure 16] This is an oblique view of the joint portion viewed from the outside, one side in the width direction, and from below. [Figure 17] This is an oblique view of the joint portion from the indoor side, the other side in the width direction, and from below. [Figure 18] An oblique view of the reinforcing portion of the upper frame reinforcing member. [Figure 19] A view of the upper frame reinforcement member from one side in the width direction. [Figure 20] A view of the reinforcing portion of the upper frame reinforcing member from the outdoor side. [Figure 21] A view of the reinforcing portion of the upper frame reinforcing member from below. [Figure 22] FIG. 15 is an enlarged view of the upper portion of FIG. [Figure 23] This is a perspective view of the upper part of the outer screen. [Figure 24] A diagram showing the position of the upper frame reinforcement member and the outer shoji screen. [Figure 25] This is a diagram showing the position of the upper frame reinforcement member and the outer shoji screen, with the shoji screen pulling section omitted. [Figure 26] FIG. 15 is an enlarged view of the lower portion of FIG. [Figure 27] This is a perspective view of the lower part of the outer shoji screen. [Figure 28] This is an oblique view showing the part where the rotation restraint member of the outer screen is provided. [Figure 29] This is a diagram showing the joint frame and upper frame of the outer shoji screen. [Figure 30] FIG. [Figure 31] 10 is a view of the rotation restraint member as seen from the other side in the width direction. FIG. [Figure 32] FIG. 10 is a view of the rotation restriction member as seen from above. DETAILED DESCRIPTION OF THE INVENTION

[0008] (First embodiment) As shown in Figures 1 to 3, the door fixture 1 of the first embodiment is a sliding window. The door fixture 1 is an aluminum sash. The door fixture 1 has a frame 2, an inner shoji screen 3, and an outer shoji screen 4. The frame 2 is installed along the edge of an opening 11 in a wall that separates the interior and exterior of a building. The direction perpendicular to the wall, connecting the interior and exterior, is referred to as the indoor-outdoor direction. In the drawings, the indoor-outdoor direction is indicated by arrow Y. In the drawings, the indoor area is indicated by the symbol "13" and the outdoor area is indicated by the symbol "14." The horizontal direction perpendicular to the wall and perpendicular to the indoor-outdoor direction is referred to as the width direction. In the drawings, the width direction is indicated by arrow X. The inner shoji screen 3 and the outer shoji screen 4 slide in the width direction. The inner shoji screen 3 and the outer shoji screen 4 are installed inside the frame 2. The inner shoji screen 3 and the outer shoji screen 4 can slide in the width direction inside the frame 2. In the width direction, the side on which the inner shoji screen 3 is positioned when the inner shoji screen 3 and the outer shoji screen 4 close the opening 11 is referred to as one side, and the side on which the outer shoji screen 4 is positioned is referred to as the other side. Each component is described assuming the posture of the component when positioned in its fixed position.

[0009] The frame body 2 is a four-sided frame. The frame body 2 has an upper frame 21, a lower frame 22, a pair of vertical frames 23, 24, an upper frame reinforcing member 25, and a lower frame reinforcing member 26. The upper frame 21, the lower frame 22, and the pair of vertical frames 23, 24 are aluminum profiles. The upper frame 21 and the lower frame 22 extend in the width direction. The pair of vertical frames 23, 24 extend in the up-down direction. The upper frame 21, the lower frame 22, and the pair of vertical frames 23, 24 each have approximately the same cross-sectional shape throughout their entire length. The upper frame reinforcing member 25 is attached to the upper frame 21. The upper frame reinforcing member 25 is a reinforcing member that reinforces the upper frame 21. The lower frame reinforcing member 26 is attached to the lower frame 22. The lower frame reinforcing member 26 is a reinforcing member that reinforces the lower frame 22.

[0010] The inner shoji screen 3 has a frame 31, double-pane glass 32, and a handle 8. The handle 8 is shown in Figure 12. The frame 31 has an upper frame 33, a lower frame 34, a door edge frame 35, and a door joint frame 36. The upper frame 33, the lower frame 34, the door edge frame 35, and the door joint frame 36 are aluminum profiles. The upper frame 33 and the lower frame 34 extend in the width direction. The door edge frame 35 and the door joint frame 36 extend in the vertical direction. The upper frame 33 is located between the upper end of the door edge frame 35 and the upper end of the door joint frame 36. The lower frame 34 is provided between the lower end of the door end frame 35 and the lower end of the door joint frame 36. The upper frame 33, the lower frame 34, the door end frame 35 and the door joint frame 36 each have approximately the same cross-sectional shape along their entire length. The handle 8 is attached to the door end frame 35.

[0011] The outer shoji screen 4 has a frame 41 and double-pane glass 42. The frame 41 has an upper frame 43, a lower frame 44, a door end frame 45, and a door joint frame 46. The upper frame 43, the lower frame 44, the door end frame 45, and the door joint frame 46 are aluminum profiles. The upper frame 43 and the lower frame 44 extend in the width direction. The door end frame 45 and the door joint frame 46 extend in the vertical direction. The upper frame 43 is located between the upper end of the door end frame 45 and the upper end of the door joint frame 46. The lower frame 44 is located between the lower end of the door end frame 45 and the lower end of the door joint frame 46. The upper frame 43, lower frame 44, door end frame 45, and door joint frame 46 each have approximately the same cross-sectional shape along their entire length. The door joint frame 36 of the inner shoji screen 3 and the door joint frame 46 of the outer shoji screen 4 are overlapped in the indoor / outdoor direction when the inner shoji screen 3 and the outer shoji screen 4 close the opening. The overlapping portion between the door joint frame 36 of the inner shoji screen 3 and the door joint frame 46 of the outer shoji screen 4 is sometimes referred to as the door joint portion 12. The door joint portion 12 is located approximately in the center of the width of the door fixture 1.

[0012] As shown in Figure 2, the upper frame 21 has an inner shoji guide groove portion 211 and an outer shoji guide groove portion 212. The inner shoji guide groove portion 211 and the outer shoji guide groove portion 212 open downward. The outer shoji guide groove portion 212 is located on the outdoor side of the inner shoji guide groove portion 211. The inner shoji guide groove portion 211 and the outer shoji guide groove portion 212 extend in the width direction. The upper side of the upper frame 33 of the inner shoji 3 is fitted into the inner shoji guide groove portion 211. The upper side of the upper frame 43 of the outer shoji 4 is fitted into the outer shoji guide groove portion 212. The lower frame 22 has an inner shoji lower rail 221 and an outer shoji lower rail 222. The inner shoji lower rail 221 and the outer shoji lower rail 222 extend in the width direction. The inner shoji lower rail 221 carries the door roller 39 of the inner shoji 3. The outer shoji lower rail 222 carries the door roller 49 of the outer shoji 4. The inner shoji 3 is guided in its widthwise movement by the inner shoji guide groove portion 211 and the inner shoji lower rail 221. The outer shoji 4 is guided in its widthwise movement by the outer shoji guide groove portion 212 and the outer shoji lower rail 222. The inner shoji lower rail 221 corresponds to a "rail that restricts the movement of the inner shoji toward the outdoors."

[0013] As shown in Figure 4, the upper frame 21 has a grooved upper plate portion 213, an indoor side facing plate portion 214, a middle facing plate portion 215, and an outdoor side facing plate portion 216. The middle facing plate portion 215 corresponds to a "rail that restricts the movement of the inner shoji screen toward the outdoor side." The grooved upper plate portion 213 has a plate surface facing in the vertical direction. The indoor side facing plate portion 214 extends downward from the indoor side end of the grooved upper plate portion 213. The middle facing plate portion 215 extends downward from the middle part of the grooved upper plate portion 213 in the indoor / outdoor direction. The outdoor side facing plate portion 216 extends upward and downward from the outdoor side end of the grooved upper plate portion 213. The portion of the grooved upper plate portion 213 between the indoor side facing plate portion 214 and the middle facing plate portion 215, the indoor side facing plate portion 214 and the middle facing plate portion 215, form the inner shoji guide groove portion 211. The portion of the grooved upper plate portion 213 between the middle facing plate portion 215 and the outdoor side facing plate portion 216, the middle facing plate portion 215 and the outdoor side facing plate portion 216 form the outer shoji guide groove portion 212. The upper frame 21 further has an upper facing plate portion 217, an upper plate portion 218, and a middle plate portion 219. The upper facing plate portion 217 extends upward from the middle portion of the grooved upper plate portion 213 in the indoor / outdoor direction. The upper plate portion 218 and the middle plate portion 219 are provided between the outdoor side facing plate portion 216 and the upper facing plate portion 217.

[0014] The groove upper plate portion 213 has a first plate portion 213a, a second plate portion 213b, and a third plate portion 213c. The first plate portion 213a extends from the upper end of the indoor-side facing plate portion 214 toward the outdoor side. The second plate portion 213b extends upward from the outdoor-side end of the first plate portion 213a and then extends diagonally further upward toward the outdoor side. The third plate portion 213c extends from the upper end of the second plate portion 213b toward the outdoor side. The indoor-side facing plate portion 214 extends downward from the indoor-side end of the first plate portion 213a. The middle facing plate portion 215 extends downward from the middle portion of the first plate portion 213a in the indoor / outdoor direction. The outdoor-side facing plate portion 216 extends upward and downward from the outdoor-side end of the third plate portion 213c. A mounting groove 213d that opens downward is formed on the first plate portion 213a on the outdoor side of the connection portion with the intermediate facing plate portion 215. The upper frame reinforcing member 25 is attached to the mounting groove 213d. The mounting groove 213d extends in the width direction. Protruding pieces 213e, 213e that extend toward each other are provided at the lower ends of each of the two sides of the mounting groove 213d. A recess 213f that opens downward is formed in the upper frame 21 and is surrounded by the second plate portion 213b, the third plate portion 213c, and the outdoor facing plate portion 216 of the groove upper plate portion 213. An outdoor plate portion 255 of the reinforcing portion 251 of the upper frame reinforcing member 25, which will be described later, is inserted into the recess 213f.

[0015] An airtight material 214a is attached to the outdoor side of the lower end of the indoor side facing panel 214. An airtight material 215a is attached to the outdoor side of the lower end of the intermediate facing panel portion 215. Between the indoor facing panel portion 214 and the intermediate facing panel portion 215, i.e., in the inner shoji guide groove portion 211, the upper part of the upper frame 33 of the inner shoji 3, the upper end portion of the door edge frame 35, and the upper end portion of the door joint frame 36 are arranged. The airtight material 214a of the indoor facing panel portion 214 is in contact with the indoor surfaces of the upper frame 33, the door edge frame 35, and the door joint frame 36. The indoor surface of the intermediate facing panel portion 215 is in contact with an airtight material 33d attached to the outdoor surface of the upper frame 33. The upper surfaces of the upper frame 33, the door edge frame 35, and the door joint frame 36 are each positioned below the groove upper panel portion 213 with a gap between them.

[0016] Between the intermediate facing panel portion 215 and the outdoor facing panel portion 216, i.e., in the outer shoji guide groove portion 212, the upper part of the upper frame 43 of the outer shoji 4, the upper end portion of the door edge frame 45, and the upper end portion of the door joint frame 46 are arranged. The airtight material 215a of the intermediate facing panel portion 215 is in contact with the indoor surfaces of the upper frame 43, door edge frame 45, and door joint frame 46. The indoor surface of the outdoor facing panel portion 216 is in contact with a member 43d attached to the upper end of the upper frame 43. The upper surfaces of the upper frame 43, door edge frame 45, and door joint frame 46 are arranged below the groove upper panel portion 213 with a gap therebetween.

[0017] The intermediate sight panel portion 215 is disposed between the inner shoji screen 3 and the outer shoji screen 4. When the inner shoji screen 3 and the outer shoji screen 4 close the opening 11, the intermediate sight panel portion 215 is sandwiched between the door frame 36 of the inner shoji screen 3 and the door frame 46 of the outer shoji screen 4 from the indoor and outdoor directions.

[0018] The upper frame reinforcement member 25 is disposed inside the outer shoji guide groove portion 212. The upper frame reinforcement member 25 is disposed not over the entire width of the outer shoji guide groove portion 212, but only on one side in the width direction and in the area near the joining portion 12 and the joining portion 12. The upper frame reinforcement member 25 is disposed above the area indicated by the symbol 25a in Figure 3. As shown in Figures 4 and 5, the upper frame reinforcement member 25 has a reinforcing portion 251 and an attachment portion 252. As shown in Figures 4 to 6, the reinforcing portion 251 has a base portion 253, an indoor board portion 254, and an outdoor board portion 255. The base portion 253 is a long, flat plate. The base portion 253 extends in the width direction and is disposed in a position where the board surface faces up and down. The plate surface of the base 253 has a cutout 253b formed at the other end in the width direction, which is also the indoor end, when viewed from above. The indoor plate 254 extends downward from the indoor edge of the base 253. The outdoor plate 255 extends upward from the outdoor edge of the base 253. The reinforcing portion 251 has a Z-shape when viewed from the width direction. The reinforcing portion 251 is made of steel such as stainless steel. The indoor / outdoor dimension of the reinforcing portion 251 is the same as or slightly smaller than the indoor / outdoor dimension of the outer shoji guide groove portion 212, i.e., the groove width.

[0019] The mounting portion 252 has a mounting plate portion 256 and a screw 257. The mounting plate portion 256 is flat and made of steel such as stainless steel. The mounting plate portion 256 is disposed on top of the base portion 253. As shown in FIG. 4 , the screw 257 is inserted into screw holes 253a and 256a formed in the base portion 253 and the mounting plate portion 256, which are stacked one on top of the other. The screw 257 connects the base portion 253 and the mounting plate portion 256. The indoor / outdoor dimension of the mounting plate portion 256 is the same as or slightly smaller than the indoor / outdoor dimension of the mounting groove portion 213d of the groove upper plate portion 213, i.e., the groove width.

[0020] The upper frame reinforcement member 25 is attached to the upper frame 21 as follows: The mounting plate portion 256 is inserted into the mounting groove portion 213d. The base portion 253 is positioned below the groove upper plate portion 213, between the intermediate sight plate portion 215 and the outdoor sight plate portion 216. The protruding pieces 213e, 213e of the groove upper plate portion 213 are sandwiched from above and below between the base portion 253 and the mounting plate portion 256. The upper surface of the base portion 253 is in contact with the lower surface of the groove upper plate portion 213. The base portion 253 is fixed to the upper frame 21. The indoor surface of the indoor plate portion 254 is in contact with the outdoor surface of the intermediate sight plate portion 215. The indoor plate portion 254 is positioned along the intermediate sight plate portion 215, i.e., the outdoor surface of the upper rail. The corner formed by the base 253 and the indoor plate portion 254 is positioned along the corner formed by the groove upper plate portion 213 and the intermediate sight plate portion 215. The lower end of the indoor plate portion 254 is positioned higher than the lower end of the intermediate sight plate portion 215. The outdoor surface of the outdoor plate portion 255 contacts the indoor surface of the outdoor sight plate portion 216. The outdoor plate portion 255 is inserted into the recess 213f of the upper frame 21. The upper end of the outdoor plate portion 255 contacts the corner formed by the third plate portion 213c of the groove upper plate portion 213 and the outdoor sight plate portion 216. The upper frame reinforcing member 25 is attached to the outdoor side of the intermediate sight plate portion 215. The upper stile 43 is positioned below the upper frame reinforcing member 25 with a gap.

[0021] When the screws 257 are tightened, the base 253 and the mounting plate 256 of the upper frame reinforcing member 25 sandwich the protruding pieces 213e, 213e of the groove upper plate 213 from above and below, restricting relative movement between the base 253 and the mounting plate 256 and the protruding pieces 213e, 213e. In other words, when the screws 257 are tightened, the upper frame reinforcing member 25 is fixed to the upper frame 21. When the screws 257 are loosened, the force with which the base 253 and the mounting plate 256 sandwich the protruding pieces 213e, 213e is loosened, allowing the upper frame reinforcing member 25 to move in the width direction relative to the upper frame 21.

[0022] When fitting the outer shoji screen 4 into the frame body 2, the outer shoji screen 4 is fitted into the frame body 2 in a snap-fit ​​manner. That is, when fitting the outer shoji screen 4 into the frame body 2, the upper edge of the outer shoji screen 4 is inserted all the way into the outer shoji screen guide groove portion 212. Therefore, when fitting the outer shoji screen 4 into the frame body 2, the screw 257 is loosened and the upper frame reinforcement member 25 is moved to a position different from the position where the outer shoji screen 4 is fitted. This makes it easier to install the outer shoji screen 4 into the frame body 2 because the outer shoji screen 4, which is inserted all the way into the outer shoji screen guide groove portion 212, does not interfere with the upper frame reinforcement member 25. After fitting the outer shoji screen 4 into the frame body 2, the upper frame reinforcement member 25 is moved near the joint portion 12 and the screw 257 is tightened to secure it to the upper frame reinforcement member 25. In this way, the upper frame reinforcement member 25 can move widthwise relative to the upper frame 21, making it easier to install the outer shoji screen 4 into the frame body 2.

[0023] The upper frame 21 has a first hollow portion 21a surrounded by the groove upper plate portion 213, the intermediate plate portion 219, the upper sight plate portion 217, and the outdoor sight plate portion 216. The upper frame 21 has a second hollow portion 21b surrounded by the intermediate plate portion 219, the upper plate portion 218, the upper sight plate portion 217, and the outdoor sight plate portion 216.

[0024] As shown in FIG. 7, the lower frame 22 has an inner shoji lower rail 221, an outer shoji lower rail 222, an indoor side lower plate portion 223, an outdoor side lower plate portion 224, an indoor side facing plate portion 225, an intermediate facing plate portion 226, an outdoor side facing plate portion 227, an indoor side upper plate portion 228, and an outdoor side upper plate portion 229. The indoor side facing plate portion 225 is formed in a flat plate shape. The indoor side facing plate portion 225 has a plate surface facing the indoor / outdoor direction. The indoor side facing plate portion 225 is provided on the indoor side end surface of the lower frame 22. The indoor side lower plate portion 223 extends from the vertical middle portion of the indoor side facing plate portion 225 to the outdoor side. The outdoor side end of the indoor side lower plate portion 223 is connected to the upper end of the outer shoji lower rail 222. The outer shoji lower rail 222 extends downward from the outdoor end of the indoor side lower plate portion 223. At the upper end of the outer shoji lower rail 222, a roller mounting portion 222b is provided on which the roller 49 of the outer shoji 4 is placed. The outer shoji lower rail 222 has the roller mounting portion 222b and a rising portion 222a extending downward from the roller mounting portion 222b. For the roller 49 of the outer shoji 4, see Figure 2. The middle visible plate portion 226 extends upward from the middle portion of the indoor side lower plate portion 223 in the indoor / outdoor direction.

[0025] The outdoor lower plate portion 224 is connected to the lower end of the outer shoji lower rail 222, i.e., the lower end of the rising portion 222a. The outdoor lower plate portion 224 extends from the lower end of the outer shoji lower rail 222 to the indoor side and the outdoor side. The outdoor sight plate portion 227 extends upward from the outdoor side end of the outdoor lower plate portion 224. The inner shoji lower rail 221 extends upward from the upper end of the middle sight plate portion 226. The inner shoji lower rail 221 is supported from below by the middle sight plate portion 226. The indoor upper plate portion 228 extends indoors from the lower end of the inner shoji lower rail 221. The indoor side end of the indoor upper plate portion 228 is connected to the vertical middle portion of the indoor sight plate portion 225. The outdoor upper plate portion 229 extends outdoor from the lower end of the inner shoji lower rail 221. The indoor-side upper plate portion 228 and the outdoor-side upper plate portion 229 are flat. The outdoor-side upper plate portion 229 is positioned slightly lower than the indoor-side upper plate portion 228. A tapping hole 228a is provided in the middle of the indoor-side upper plate portion 228 in the width direction. The indoor-side upper plate portion 228 has a greater plate thickness on the outdoor side than on the indoor side via the tapping hole 228a.

[0026] The inner shoji lower rail 221 has a rising portion 221a and a door roller mounting portion 221b. The rising portion 221a extends upward from the upper end of the middle sight panel portion 226. The rising portion 221a is thicker than the middle sight panel portion 226. The rising portion 221a corresponds to the support portion in the claims. The door roller mounting portion 221b protrudes from the upper end of the rising portion 221a toward the outdoor side. The lower surface of the door roller mounting portion 221b faces the upper surface of the outdoor upper panel portion 229 with a gap between them. As shown in Figure 2, the door roller 39 of the inner shoji 3 is placed on the door roller mounting portion 221b. The upper side of the rising portion 221a and the door roller mounting portion 221b are inserted from below into a notch portion 34d provided in the bottom frame 34, which opens downward and extends in the width direction. A vibration-preventing member 34e is provided along the cutout portion 34d on the lower frame 34. The vibration-preventing member 34e comes into contact with the upper side of the rising portion 221a and the door roller mounting portion 221b, thereby preventing the inner shoji screen 3 from swinging in the indoor / outdoor direction. In Figure 2, the lower load transmission member 52, which will be described later, is indicated by a dashed line.

[0027] As shown in Figure 7, an airtight material mounting portion 225b to which airtight material 225a is attached is provided on the outdoor side of the upper end of the indoor side facing plate portion 225. An airtight material mounting portion 229b to which airtight material 229a is attached is provided on the outdoor side end of the outdoor side upper plate portion 229. See Figure 2 for the airtight material 229a. The airtight material mounting portion 229b protrudes outdoors from the outdoor side end of the outdoor side upper plate portion 229. As shown in Figure 2, the airtight material 225a attached to the indoor side facing plate portion 225 is in contact with the indoor side surface of the bottom frame 34 of the inner shoji screen 3. The airtight material 229a attached to the outdoor side upper plate portion 229 is in contact with the indoor side surface of the bottom frame 44 of the outer shoji screen 4.

[0028] The lower frame 22 has a hollow portion 22a surrounded by an indoor side lower plate portion 223, an indoor side facing plate portion 225, an intermediate facing plate portion 226 and an indoor side upper plate portion 228.

[0029] The lower frame reinforcement member 26 is attached to the outdoor upper plate portion 229 of the lower frame 22. In other words, the lower frame reinforcement member 26 is attached to the outdoor side of the inner shoji lower rail 221 of the lower frame 22. The lower frame reinforcement member 26 is not provided across the entire width of the outdoor upper plate portion 229, but only on one side in the width direction and in the area near the joint portion 12. The lower frame reinforcement member 26 is positioned below the inner shoji 3 when the inner shoji 3 and outer shoji 4 close the opening 11. The lower frame reinforcement member 26 is provided on the indoor side of the outer shoji lower rail 222.

[0030] As shown in Figures 7 and 8, the lower frame reinforcement member 26 has an upper reinforcement portion 261, a lower reinforcement portion 262, and a screw 263. The upper reinforcement portion 261 and the lower reinforcement portion 262 are made of steel, such as stainless steel. The upper reinforcement portion 261 is attached to the upper side of the outdoor upper plate portion 229. The lower reinforcement portion 262 is attached to the lower side of the outdoor upper plate portion 229. The screw 263 secures the upper reinforcement portion 261 and the lower reinforcement portion 262 to the outdoor upper plate portion 229. The upper reinforcement portion 261 and the lower reinforcement portion 262 are each made of steel, such as stainless steel.

[0031] As shown in Figures 7 to 9, the upper reinforcement portion 261 has a base portion 261a and an indoor plate portion 261b. In Figure 8, the portion of the inner shoji bottom rail 221 that overlaps with the bottom frame reinforcement member 26 in the vertical direction is partially omitted. The base portion 261a is flat. As shown in Figure 7, the base portion 261a is arranged along the upper surface of the outdoor upper plate portion 229. The base portion 261a is fixed to the bottom frame 22. The indoor plate portion 261b is flat and protrudes upward from the indoor edge of the base portion 261a. The shape of the upper reinforcement portion 261 when viewed from the width direction is L-shaped. The indoor plate portion 261b is arranged along the outdoor surface of the rising portion 221a of the inner shoji bottom rail 221.

[0032] The indoor panel 261b is disposed between the outdoor upper panel 229 and the roller support portion 221b of the inner shoji lower rail 221. The upper end of the indoor panel 261b is disposed at the corner between the rising portion 221a and the roller support portion 221b. The corner between the base 261a and the indoor panel 261b is disposed along the corner between the outdoor upper panel 229 and the rising portion 221a. The outdoor end of the base 261a is disposed above the outdoor end of the outdoor upper panel 229.

[0033] As shown in Figures 7, 8, and 10, the lower reinforcement portion 262 has a base portion 262a and an indoor plate portion 262b. The base portion 262a is flat. As shown in Figure 7, the base portion 262a is disposed along the lower surface of the outdoor upper plate portion 229. The base portion 262a is fixed to the lower frame 22. The indoor plate portion 262b is flat. The indoor plate portion 262b protrudes downward from the indoor edge of the base portion 262a. The indoor plate portion 262b is disposed along the outdoor surface of the rising portion 221a of the inner shoji bottom rail 221. When viewed from the width direction, the lower reinforcement portion 262 has an L-shape. The corner between the base portion 262a and the indoor plate portion 262b is disposed along the corner between the outdoor upper plate portion 229 and the rising portion 221a. The outdoor end of the base 261a is located below the outdoor end of the outdoor upper plate 229. The outdoor end of the base 261a is located at the corner between the outdoor upper plate 229 and the airtight material mounting portion 229b. The lower end of the indoor plate 262b is located at the corner between the rising portion 221a of the inner shoji bottom rail 221 and the indoor side lower plate 223.

[0034] The base 261a of the upper reinforcement part 261, the outdoor-side upper plate part 229 of the lower frame 22, and the base 262a of the lower reinforcement part 262 overlap in the vertical direction. Holes 261c, 229c, and 262c are formed in the base 261a, the outdoor-side upper plate part 229, and the base 262a at positions that overlap in the vertical direction. Screws 263 are inserted into the holes 261c, 229c, and 262c to fix the upper reinforcement part 261 and the lower reinforcement part 262 to the outdoor-side upper plate part 229.

[0035] The thickness of the indoor panel 261b, i.e., the indoor / outdoor dimension of the indoor panel 261b, is smaller than the dimension of the roller mounting portion 221b that protrudes outdoors from the rising portion 221a. Therefore, the indoor panel 261b does not protrude outdoors beyond the roller mounting portion 221b. The indoor panel 261b is located within the indoor / outdoor dimension of the roller mounting portion 221b. The indoor / outdoor dimension of the roller mounting portion 221b is indicated by W1 in FIG. 7. As shown in FIG. 2, the upper side of the rising portion 221a and the roller mounting portion 221b are inserted from below into a notch 34d that is provided in the bottom frame 34, opens downward, and extends in the width direction. As described above, the indoor panel 261b, which is located on the outdoor side of the rising portion 221a, does not protrude outdoors beyond the roller mounting portion 221b. As a result, the indoor panel portion 261b does not interfere with the anti-vibration member 34e provided along the cutout portion 34d. Therefore, even when the lower frame reinforcing member 26 is provided on the lower frame 22, the same anti-vibration member 34e can be used as when the lower frame reinforcing member 26 is not provided.

[0036] As shown in Figure 4, the upper frame 33 of the inner shoji screen 3 has a double-glazing mounting portion 331 and a main body portion 332. The double-glazing mounting portion 331 is formed with a glass groove portion 33a into which the double-glazing glass 32 is fitted. The glass groove portion 33a opens downward. The main body portion 332 is connected to the upper side of the double-glazing mounting portion 331.

[0037] The double-glazing mounting portion 331 has a groove bottom plate portion 333, an indoor groove side plate portion 334, and an outdoor groove side plate portion 335. The groove bottom plate portion 333 forms the bottom of the glass groove portion 33a. The groove bottom plate portion 333 is positioned opposite the end face of the double-glazing 32 shown in Figure 2. The indoor groove side plate portion 334 and the outdoor groove side plate portion 335 form the sides of the glass groove portion 33a. The indoor groove side plate portion 334 extends downward from the indoor-side end face of the groove bottom plate portion 333. The outdoor groove side plate portion 335 extends downward from the outdoor-side end face of the groove bottom plate portion 333.

[0038] The main body 332 includes an indoor-side panel 336, an intermediate panel 337, an outdoor-side panel 338, and an outer panel 339. The indoor-side panel 336 and the outdoor-side panel 338 each protrude upward from the groove bottom panel 333. The indoor-side panel 336 protrudes upward from a position that is intermediate in the indoor / outdoor direction of the groove bottom panel 333 and slightly toward the outdoors than the indoor-side end of the groove bottom panel 333. The indoor-side panel 336 is positioned outdoors relative to the indoor gutter side panel 334. The outdoor side panel 338 extends upward from the upper end of the outdoor gutter side panel 335. The intermediate panel 337 extends outdoors from the vertical intermediate portion of the indoor-side panel 336 and is connected to the vertical intermediate portion of the outdoor side panel 338. The outer plate portion 339 extends from the upper end of the indoor side plate portion 336 to the outdoor side, and is connected to the upper end of the outdoor side plate portion 338 .

[0039] A groove 338a opening to the outdoor side is formed at the upper end of the outdoor side plate 338. The groove 338a extends across the entire width of the outdoor side plate 338. An upper load transmission member 51 is fitted into the groove 338a. The upper load transmission member 51 is fitted near the other widthwise end of the groove 338a, i.e., near the end of the groove 338a that joins with the stile 36 of the upper frame 33. In Figure 3, the range in which the upper load transmission member 51 is provided is indicated by arrow A1. The upper load transmission member 51 faces the indoor-facing surface of the intermediate facing plate 215 of the upper frame 21 from the indoor side, with a small gap between them. The upper load transmission member 51 is a component that fills the gap between the upper frame 33 and the intermediate facing plate 215. The upper load transmission member 51 comes into contact with the upper frame 21 when wind load acts on the fitting 1. The upper load transmission member 51 transmits wind load between the inner shoji screen 3 and the upper frame 21. The upper load transmission member 51 may be in contact with the upper frame 21 when no wind load is acting on the fitting 1.

[0040] The upper load transmission member 51 is a long, piece-shaped member. The upper load transmission member 51 is arranged extending in the width direction. The upper load transmission member 51 has an attachment portion 511 and a contact portion 512. The attachment portion 511 is fitted into the groove portion 338a. The contact portion 512 is connected to the outdoor side of the attachment portion 511. The contact portion 512 protrudes outdoor further than the outdoor-side plate portion 338 and comes into contact with the intermediate facing plate portion 215.

[0041] The main body 332 has a hollow portion 33b surrounded by the groove bottom plate 333, the indoor side plate 336, the intermediate plate 337, and the outdoor side plate 338. The main body 332 has a hollow portion 33c surrounded by the indoor side plate 336, the intermediate plate 337, the outdoor side plate 338, and the outer plate 339. The hollow portion 33c is located above the hollow portion 33b.

[0042] As shown in Figure 11, the bottom frame 34 of the inner shoji screen 3 has a double-glazing mounting portion 341 and a main body portion 342. The double-glazing mounting portion 341 is formed with a glass groove portion 34a into which the double-glazing glass 32 is fitted. The glass groove portion 34a opens upward. The main body portion 342 is connected to the underside of the double-glazing mounting portion 341.

[0043] The double-glazing mounting portion 341 has a groove bottom plate portion 343, an indoor groove side plate portion 344, and an outdoor groove side plate portion 345. The groove bottom plate portion 343 forms the bottom of the glass groove portion 34a. The groove bottom plate portion 343 is positioned opposite the end face of the double-glazing 32. The indoor groove side plate portion 344 and the outdoor groove side plate portion 345 form the sides of the glass groove portion 34a. The indoor groove side plate portion 344 extends upward from the indoor-side end face of the groove bottom plate portion 343. The outdoor groove side plate portion 345 extends upward from the outdoor-side end face of the groove bottom plate portion 343.

[0044] The main body 342 has an indoor-side panel 346, an intermediate panel 347, and an outdoor-side panel 348. The indoor-side panel 346 and the outdoor-side panel 348 each protrude downward from the groove bottom panel 343. The indoor-side panel 346 protrudes downward from a position that is intermediate in the indoor / outdoor direction of the groove bottom panel 343 and slightly outdoors relative to the indoor-side end. The indoor-side panel 346 is positioned outdoors relative to the indoor gutter side panel 344. The outdoor side panel 348 extends downward from the lower end of the outdoor gutter side panel 345. The intermediate panel 347 extends outdoors from a vertically intermediate portion of the indoor-side panel 346 and is connected to a vertically intermediate portion of the outdoor side panel 348. The main body 342 has a first hollow portion 34b formed therein, which is surrounded by a groove bottom plate 343, an indoor side plate 346, a middle plate 347, and an outdoor side plate 348. The first hollow portion 34b is disposed below the glass groove 34a.

[0045] A groove 346a opening to the outdoor side is formed at the lower end of the indoor side panel 346. The groove 346a extends across the entire width of the indoor side panel 346. A lower load transmission member 52 is fitted into the groove 346a. The lower load transmission member 52 is fitted near the other widthwise end of the groove 346a, i.e., near the end of the lower frame 34 that joins with the stile 36. In Figure 3, the range in which the lower load transmission member 52 is provided is indicated by arrow A2. The lower load transmission member 52 faces the indoor side of the rising portion 221a of the inner shoji lower rail 221 of the lower frame 22, with a small gap between them. The lower load transmission member 52 is a component that fills the gap between the lower frame 34 and the inner shoji lower rail 221. The lower load transmission member 52 comes into contact with the lower frame 22 when wind load acts on the fitting 1. The lower load transmission member 52 transmits wind load between the inner shoji screen 3 and the lower frame 22. The lower load transmission member 52 may be in contact with the lower frame 22 when no wind load is acting on the fitting 1.

[0046] The lower load transmission member 52 is a long, piece-shaped member. The lower load transmission member 52 is arranged extending in the width direction. The lower load transmission member 52 has an attachment portion 521 and a contact portion 522. The attachment portion 521 is fitted into the groove portion 346a. The contact portion 522 is connected to the outdoor side of the attachment portion 521. The contact portion 522 protrudes outdoor further than the indoor side panel portion 346 and comes into contact with the rising portion 221a of the inner shoji lower rail 221.

[0047] As shown in Figure 12, a handle 8 is attached to the door frame 35 of the inner shoji screen 3. The handle 8 protrudes from the door frame 35 toward the interior of the room. The door frame 35 has a double-glazing mounting portion 351 and a main body portion 352. The double-glazing mounting portion 351 is formed with a glass groove portion 35a into which the double-glazing glass 32 is fitted. The main body portion 352 is connected to the side of the double-glazing mounting portion 351 opposite the side into which the double-glazing glass 32 is fitted. The glass groove portion 35a of the double-glazing mounting portion 351 opens to the other side in the width direction.

[0048] The double-glazing mounting portion 351 has a groove bottom plate portion 353, an indoor groove side plate portion 354, and an outdoor groove side plate portion 355. The groove bottom plate portion 353 forms the bottom of the glass groove portion 35a. The groove bottom plate portion 353 is positioned opposite the end face of the double-glazing 32. The indoor groove side plate portion 354 and the outdoor groove side plate portion 355 form the sides of the glass groove portion 35a. The indoor groove side plate portion 354 extends to the other width direction from the indoor-side end face of the groove bottom plate portion 353. The outdoor groove side plate portion 355 extends to the other width direction from the outdoor-side end of the groove bottom plate portion 353.

[0049] The main body 352 includes an indoor-side panel 356, an intermediate panel 357, an outdoor-side panel 358, and an outer panel 359. The indoor-side panel 356, the intermediate panel 357, and the outdoor-side panel 358 each protrude from the groove bottom panel 353 to one side in the width direction, i.e., the side opposite the side where the glass groove 35a is formed. The indoor-side panel 356, the intermediate panel 357, and the outdoor-side panel 358 are arranged in this order from the indoor side to the outdoor side, with a gap between them. The indoor-side panel 356 is located closer to the outdoor side than the indoor-side end of the groove bottom panel 353. The outdoor-side panel 358 is located closer to the indoor side than the outdoor-side end of the groove bottom panel 353. The indoor-side panel 356 and the outdoor-side panel 358 protrude from the intermediate panel 357 to one side in the width direction.

[0050] The outdoor side plate portion 358 extends from the groove bottom plate portion 353 to one side in the width direction, then bends toward the outdoors, extends toward the outdoors, then bends toward one side in the width direction, and extends toward one side in the width direction again. The outer plate portion 359 is formed in a flat plate shape. The plate surface of the outer plate portion 359 faces the width direction. The outer plate portion 359 is disposed between the indoor side plate portion 356 and the outdoor side plate portion 358. The indoor side end of the outer plate portion 359 is connected to a middle portion in the width direction of the indoor side plate portion 356. The outdoor side end of the outer plate portion 359 is connected to a middle portion in the width direction of the outdoor side plate portion 358. One end of the middle plate portion 357 in the width direction is connected to a middle portion in the indoor / outdoor direction of the outer plate portion 359. The door end frame 35 has a first hollow portion 35b surrounded by a grooved bottom plate portion 353, an indoor side plate portion 356, an intermediate plate portion 357, and an outer plate portion 359. The door end frame 35 has a second hollow portion 35c surrounded by the grooved bottom plate portion 353, the intermediate plate portion 357, an outdoor side plate portion 358, and the outer plate portion 359.

[0051] The handle 8 has a gripping portion 81, a fixing portion 82, a first reinforcing portion 83, and a second reinforcing portion 84. The gripping portion 81 is held by a user. The fixing portion 82 is attached to the gripping portion 81. The first reinforcing portion 83 is provided inside the glass groove portion 35a. The second reinforcing portion 84 is provided inside the second hollow portion 35c. The first reinforcing portion 83 is fixed to the second reinforcing portion 84. The fixing portion 82 is fixed to the first reinforcing portion 83. The first reinforcing portion 83 and the second reinforcing portion 84 are each made of steel such as stainless steel.

[0052] The second reinforcing portion 84 is a long member. The second reinforcing portion 84 extends in the vertical direction. The second reinforcing portion 84 has the same cross-sectional shape throughout the vertical direction. The cross-sectional shape of the second reinforcing portion 84 is a C-shape that opens to one side in the width direction. The second reinforcing portion 84 has a fixing plate portion 841 and a pair of side plate portions 842, 843. The fixing plate portion 841 overlaps one side surface in the width direction of the groove bottom plate portion 353 inside the second hollow portion 35c. The pair of side plate portions 842, 843 extend to one side in the width direction from the indoor-side edge and the outdoor-side edge of the side plate portion 842. One side plate portion 842 of the pair of side plate portions 842, 843 overlaps the outdoor side of the intermediate plate portion 357. The other side plate portion 843 of the pair of side plate portions 842, 843 is disposed so as to overlap the outdoor side plate portion 358 on the indoor side.

[0053] The first reinforcing portion 83 is flat. The first reinforcing portion 83 overlaps the other side in the width direction of the groove bottom plate portion 353. The indoor end of the first reinforcing portion 83 is located inside the corner between the groove bottom plate portion 353 and the indoor groove side plate portion 354. The outdoor end of the first reinforcing portion 83 is located indoors from the corner between the groove bottom plate portion 353 and the outdoor groove side plate portion 355. The first reinforcing portion 83 overlaps with the fixing plate portion 841 of the second reinforcing portion 84 via the groove bottom plate portion 353. The first reinforcing portion 83, the groove bottom plate portion 353, and the fixing plate portion 841 are fixed in an overlapping state with screws 851. The fixing portion 82 is a long member,

[0054] The fixing portion 82 extends in the vertical direction. The fixing portion 82 is positioned outside the corner formed by the groove bottom plate portion 353 of the door stile 35 and the indoor groove side plate portion 354. The fixing portion 82 has the same cross-sectional shape throughout the vertical direction. The cross-sectional shape of the fixing portion 82 is L-shaped. The fixing portion 82 has a first plate portion 821 and a second plate portion 822. The first plate portion 821 forms one half of the L-shape. The second plate portion 822 forms the other half of the L-shape. The first plate portion 821 overlaps the outdoor side surface of the indoor groove side plate portion 354. The second plate portion 822 extends from one widthwise end of the first plate portion 821 toward the outdoor side. The second plate portion 822 overlaps one widthwise surface of the groove bottom plate portion 353. The second plate portion 822 overlaps with the first reinforcing portion 83 via the groove bottom plate portion 353. The second plate portion 822, groove bottom plate portion 353, and first reinforcing portion 83 are fixed in an overlapping state with screws 852. The grip portion 81 is fixed to the first plate portion 821 with screws 853. The grip portion 81 is in surface contact with the indoor-facing surface of the first plate portion 821.

[0055] By providing the first reinforcing portion 83 and the second reinforcing portion 84 in the glass groove portion 35a and the second hollow portion 35c of the door sill 35, the handle 8 can be stably attached to the door sill 35 even if the handle 8 has a large shape. By providing the gripping portion 81 on the indoor side of the fixing portion 82 for fixing the handle 8 to the door sill 35, the fixing portion 82 is not exposed, improving the design. By removing the gripping portion 81 and the fixing portion 82 from the first reinforcing portion 83, the gripping portion 81 and the fixing portion 82 can be easily replaced.

[0056] In the case of sliding sashes, when a large wind load acts, the load acts from the outdoor side on the rail of the upper frame 21, which is located between the inner shoji screen 3 and the outer shoji screen 4. If the load acting on this rail is large, there is a risk of the rail deforming. As described above, in the above embodiment, the rails located between the inner shoji screen 3 and the outer shoji screen 4 are the middle sight panel portion 215 of the upper frame 21 and the inner shoji lower rail 221 of the lower frame 22. An upper frame reinforcement member 25 is attached to the outdoor side of the middle sight panel portion 215. This allows the upper frame reinforcement member 25 to bear part of the wind load, preventing a large load from acting on the middle sight panel portion 215. This prevents deformation of the reinforcement portion 251 due to wind load. A lower frame reinforcement member 26 is attached to the outdoor side of the inner shoji lower rail 221. This allows the lower frame reinforcement member 26 to bear part of the wind load, preventing a large load from acting on the inner shoji lower rail 221. Deformation of the inner shoji lower rail 221 due to wind load can be prevented. This increases the wind pressure resistance of the fitting 1. By attaching the upper frame reinforcement member 25 to the upper frame 21 and the lower frame reinforcement member 26 to the lower frame 22, the wind pressure resistance of the fitting 1 can be increased, which reduces manufacturing costs compared to when the frame body 2 or frames 31, 41 are made thicker to increase the wind pressure resistance of the fitting 1. The same fitting can achieve different wind pressure resistance depending on whether or not the upper frame reinforcement member 25 is attached. This means that the same fitting can be used on upper floors in a high-rise building where large wind loads act, and on lower floors where large wind loads like those on upper floors do not act. This makes it easier to install and manage the fittings.

[0057] In the case of sliding sashes, when a large wind load acts, the load acts from the outside, particularly near the joint of the frame rails installed between the inner and outer shoji screens. In the above embodiment, the upper frame reinforcement member 25 and the lower frame reinforcement member 26 are each installed near the joint 12. In this way, by partially installing the upper frame reinforcement member 25 on the upper frame 21 and partially installing the lower frame reinforcement member 26 on the lower frame 22, deformation of the intermediate panel portion 215 and the inner shoji lower rail 221 due to wind load can be prevented, and the wind pressure resistance of the door and window 1 can be easily and inexpensively improved.

[0058] The upper frame reinforcement member 25 is positioned in a position that is above the outer shoji screen 4 when the inner shoji screen 3 and the outer shoji screen 4 close the opening 11. The lower frame reinforcement member 26 is positioned in a position that is below the inner shoji screen 3 when the inner shoji screen 3 and the outer shoji screen 4 close the opening 11. When the inner shoji screen 3 and the outer shoji screen 4 close the opening 11, the upper frame reinforcement member 25 and the lower frame reinforcement member 26 can be prevented from being exposed. By providing the upper frame reinforcement member 25 and the lower frame reinforcement member 26 to the building fixture 1, the design of the building fixture 1 is not impaired.

[0059] An upper load transmission member 51 is attached to the upper frame 33 of the inner shoji screen 3 in a position close to the joining frame 36 and facing the upper frame 21 in the indoor / outdoor direction. As a result, in strong winds, the upper frame 33 and the upper frame 21 come into contact via the upper load transmission member 51 near the joining section 12 where wind loads tend to act locally, and the wind load can be transmitted between the upper frame 33 and the upper frame 21. This allows the wind load acting on the joining section 12 to be distributed to the upper frame 33 and the upper frame 21 near the joining section 12. As a result, deformation of the upper frame 21 and the upper frame 33 due to the localized action of wind loads can be suppressed. A lower load transmission member 52 is attached to the lower frame 34 of the inner shoji screen 3 in a position close to the joining frame 36 and facing the lower frame 22 in the indoor / outdoor direction. As a result, in strong winds, the lower frame 34 and the lower frame 22 come into contact via the lower load transmission member 52 near the joint 12, where wind loads tend to act locally, and the wind load can be transmitted between the lower frame 34 and the lower frame 22. This allows the wind load acting on the joint 12 to be distributed to the lower frame 34 and the lower frame 22 near the joint 12. As a result, deformation of the lower frame 22 and the lower frame 34 due to the localized action of wind loads can be suppressed. In this way, the upper frame reinforcing member 25, the lower frame reinforcing member 26, the upper load transmission member 51, and the lower load transmission member 52 can further improve the wind pressure resistance of the door and window fitting 1.

[0060] The upper frame reinforcement member 25 is located indoors rather than the outdoor facing panel portion 216 of the upper frame 21. When attaching the upper frame reinforcement member 25 to the upper frame 21 installed on the building frame, the upper frame reinforcement member 25 can be easily attached from indoors.

[0061] The lower frame reinforcement member 26 is provided on the indoor side of the outer shoji lower rail 222. When attaching the lower frame reinforcement member 26 to the lower frame 22 installed on the building frame, the lower frame reinforcement member 26 can be easily attached from indoors.

[0062] As shown in Figure 3, the vertical frames 23, 24 have hollow portions 23a, 24a formed therein, respectively. As shown in Figure 4, the upper frame 43 of the outer shoji screen 4 has a first hollow portion 43b and a second hollow portion 43c formed above the glass groove portion 43a. The lower frame 34 of the inner shoji screen 3 has a first hollow portion 34b and a second hollow portion 34c formed below the glass groove portion 34a. The lower frame 44 of the outer shoji screen 4 has a first hollow portion 44b and a second hollow portion 44c formed below the glass groove portion 44a. The joint frame 36 of the inner shoji screen 3 has a hollow portion 36b formed on the widthwise outer side of the glass groove portion 36a. The door edge frame 45 of the outer shoji screen 4 has a hollow portion 45b formed on the widthwise outer side of the glass groove portion 45a. The joint frame 46 of the outer shoji screen 4 has a first hollow portion 46b and a second hollow portion 46c formed on the widthwise outside of the glass groove portion 46a.

[0063] In a fitting 1B of an aluminum-resin composite sash made by combining aluminum and resin as shown in Figure 13, an upper frame reinforcing member 25 may be attached to the intermediate facing panel 215B of the upper frame 21B between the inner shoji screen 3B and the outer shoji screen 4B, i.e., the outdoor side of the upper rail. In the fitting 1B, a lower frame reinforcing member 26 may be attached to the outdoor side of the inner shoji lower rail 221B of the lower frame 22B.

[0064] (Second embodiment) As shown in Figures 14 and 15, in the second embodiment of the fitting 1C, the outer shoji 4C of the sliding window is supported on the frame 2 in a state where it is restricted from sliding in the width direction. The inner shoji 3 is supported on the frame 2 so that it can slide in the width direction. The outer shoji 4C corresponds to the fixed shoji in the claims. The inner shoji 3 corresponds to the movable shoji in the claims. As shown in Figures 14 to 17, the upper frame 21 is provided with an upper frame reinforcing member 27 that reinforces the upper frame 21 and restricts the sliding of the outer shoji 4C. In Figure 15, the portion where the upper frame reinforcing member 27 is located when viewed from the top and bottom is indicated by a dashed line and reference symbol 27. In Figure 17, the outer shoji 4C is not shown.

[0065] As shown in Figures 16 and 17, the upper frame reinforcement member 27 is arranged inside the outer shroud guide groove portion 212 of the upper frame 21, similar to the upper frame reinforcement member 25 of the first embodiment. The upper frame reinforcement member 27 is not provided over the entire width of the outer shroud guide groove portion 212, but only on one side in the width direction and in the area near the joining portion 12. As shown in Figure 14, the upper frame reinforcement member 27 has a reinforcing portion 271 and an attachment portion 252. The attachment portion 252 of this embodiment has the same shape as the attachment portion 252 of the first embodiment.

[0066] As shown in Figures 18 to 21, the reinforcing portion 271 has a base portion 273, an indoor board portion 274, an outdoor board portion 275, a shoji restraining portion 276, and a shoji pulling portion 277. The base portion 273 is a long, flat plate. The base portion 273 extends in the width direction and is disposed in a position where the plate surface faces up and down. The indoor board portion 274 extends downward from the entire indoor-side edge of the base portion 273. The outdoor board portion 275 extends upward from the entire outdoor-side edge of the base portion 273. The shoji restraining portion 276 extends downward from the edge on the other side in the width direction of the base 273. The shoji restraining portion 276 is a flat plate. The shoji restraining portion 276 is disposed in a position where the plate surface faces up in the width direction. A notch 276a is formed on the outdoor side and lower side of the shoji restraint portion 276. A lower edge 276b of the shoji restraint portion 276 protrudes downward beyond a lower edge 274a of the indoor panel portion 274.

[0067] The shoji pulling portion 277 protrudes from the other widthwise end of the outdoor plate portion 275 toward the other widthwise side. The shoji pulling portion 277 is joined to the outdoor plate portion 275 by welding or the like. The shoji pulling portion 277 may be formed integrally with the outdoor plate portion 275. The shoji pulling portion 277 has a smaller plate thickness than the outdoor plate portion 275. A lower edge 277a of the shoji pulling portion 277 protrudes downward from a lower edge 275a of the outdoor plate portion 275, i.e., from the base portion 273. The lower edge 277a of the shoji pulling portion 277 is positioned higher than a lower edge 274a of the indoor plate portion 274 and a lower edge 276b of the shoji restraint portion 276. An upper edge 277b of the shoji pulling portion 277 is positioned at approximately the same height as an upper edge 275b of the outdoor plate portion 275.

[0068] The base 273 of the reinforcing portion 271, the indoor plate portion 274, and the outdoor plate portion 275 together form a Z-shape when viewed from the width direction. The reinforcing portion 271 is made of steel such as stainless steel. The indoor / outdoor dimension of the reinforcing portion 271 is the same as or slightly smaller than the indoor / outdoor dimension of the outer shoji guide groove portion 212, i.e., the groove width.

[0069] As shown in FIG. 19 , the mounting portion 252 has a mounting plate portion 256 and a screw 257. The mounting plate portion 256 is flat and made of steel, such as stainless steel. The mounting plate portion 256 is disposed on top of the base portion 273 of the upper frame reinforcement member 27. As shown in FIGS. 19 and 21 , the screw 257 is inserted into the screw holes 273a and 256a formed in the base portion 273 and the mounting plate portion 256, which are stacked one on top of the other. The screw 257 connects the base portion 273 and the mounting plate portion 256. The indoor / outdoor dimension of the mounting plate portion 256 is the same as or slightly smaller than the indoor / outdoor dimension of the mounting groove portion 213d of the grooved upper plate portion 213 of the upper frame 21, i.e., the groove width.

[0070] The upper frame reinforcement member 27 is attached to the upper frame 21 as follows: The mounting plate portion 256 is inserted into the mounting groove portion 213d. The base portion 273 is positioned below the groove upper plate portion 213, between the intermediate sight plate portion 215 and the outdoor sight plate portion 216. The protruding pieces 213e, 213e of the groove upper plate portion 213 are sandwiched from above and below between the base portion 273 and the mounting plate portion 256. The upper surface of the base portion 273 is in contact with the lower surface of the groove upper plate portion 213. The base portion 273 is fixed to the upper frame 21. The indoor surface of the indoor plate portion 274 is in contact with the outdoor surface of the intermediate sight plate portion 215. The indoor plate portion 274 is positioned along the intermediate sight plate portion 215, i.e., the outdoor surface of the upper rail. The corner formed by the base 273 and the indoor plate portion 274 is disposed along the corner formed by the groove upper plate portion 213 and the intermediate sight plate portion 215. The lower edge portion 274a of the indoor plate portion 274 is disposed above the lower end portion of the intermediate sight plate portion 215. The outdoor surface of the outdoor plate portion 275 contacts the indoor surface of the outdoor sight plate portion 216. The outdoor plate portion 275 is inserted into the recess 213f of the upper frame 21. The upper edge portion 275b of the outdoor plate portion 275 contacts the corner formed by the third plate portion 213c of the groove upper plate portion 213 and the outdoor sight plate portion 216.

[0071] The plate surface of the shoji restraint portion 276 faces the width direction. As shown in Figure 16, the lower edge portion 276b of the shoji restraint portion 276 is positioned below the upper end surface 46e of the sash frame 46 of the outer shoji 4C supported by the frame body 2. The shoji restraint portion 276 is positioned in the middle of the outer shoji guide groove portion 212 in the width direction and is in contact with the end surface 46f on one side of the width direction of the sash frame 46 of the outer shoji 4C that closes the opening 11. When the outer shoji 4C attempts to move to one side in the width direction, the sash frame 46 comes into contact with the shoji restraint portion 276 and is restrained from moving. There may be a gap between the shoji restraint portion 276 and the end surface 46f on one side of the width direction of the sash frame 46 of the outer shoji 4C, as long as the outer shoji 4C moves slightly but does not open the opening 11.

[0072] As shown in Figures 22 and 23, the upper frame 43 of the outer shoji screen 4C has an outdoor panel 431 located above the glass groove 43a and along the outdoor surface. The outdoor panel 431 corresponds to the "finish panel" in the claims. The upper edge of the outdoor panel 431 has a protrusion 432 that protrudes outdoors across the entire width. As shown in Figure 23, a vibration-stop member 433 is attached to one end of the upper frame 43 in the width direction, i.e., the end on the side of the stile 46. The vibration-stop member 433 has a protrusion 434 that continues from one side of the protrusion 432 of the upper frame 43 in the width direction. The upper sides of the outdoor panel 431 and the vibration-stop member 433 of the upper frame 43 are located on the indoor side of the outdoor panel 216 of the upper frame 21. For the outdoor panel 216 of the upper frame 21, see Figure 22. A gap is set between the protrusion 432 of the outdoor board portion 431 of the upper frame 43 and the indoor surface of the outdoor facing board portion 216 of the upper frame 21, taking into consideration manufacturing errors in the extrusion molding of the frame body 2 and frame 41. However, the protrusion 432 may come into contact with the indoor surface of the outdoor facing board portion 216 due to repulsion between the airtight material 215a of the intermediate facing board portion 215 and the upper frame 43. The upper frame reinforcing member 27 is not shown in Figure 22.

[0073] As shown in Figure 14, the shoji pulling portion 277 of the upper frame reinforcement member 27 is inserted between the vicinity of one widthwise end of the protrusion 432 of the outdoor board portion 431 of the upper frame 43, the protrusion 434 of the anti-vibration member 433, and the outdoor-side facing board portion 216 of the upper frame 21. As a result, the upper frame 43 is pushed toward the indoor side and pulled toward the indoor side. Figures 24 and 25 show perspective views that show the positional relationship between the upper frame reinforcement member 27, the upper frame 43, and the anti-vibration member 433. In Figure 25, the shoji pulling portion 277 is not shown in order to show the indoor side of the shoji pulling portion 277.

[0074] The upper frame reinforcement member 27 of the fitting 1C can reinforce the upper frame 21 and also restrain the movement of the outer shoji screen 4C, thereby fixing the outer shoji screen 4C. Because the upper frame reinforcement member 27 has the function of reinforcing the upper frame 21 and fixing the outer shoji screen 4C, it is easier to install than when separate components are provided for each function. The shoji drawing portion 277 of the upper frame reinforcement member 27 can pull the outer shoji screen 4C toward the interior. This prevents the outer shoji screen 4C from moving toward the exterior during high wind pressure resistance. As a result, the airtightness and soundproofing performance of the fitting 1C can be improved.

[0075] As shown in Figures 26 and 27, the lower frame 44 of the outer shoji screen 4C has an outdoor panel 441 located below the glass groove 44a and along the outdoor surface. The outdoor panel 441 corresponds to the facing panel in the claims. The lower edge of the outdoor panel 441 has a protrusion 442 that protrudes outdoors across the entire width. A vibration-stop member 443 is attached to one end of the lower frame 44 in the width direction, i.e., the end on the side of the joining frame 46. The vibration-stop member 433 has a protrusion 444 that continues to one side of the protrusion 442 of the lower frame 44 in the width direction. The upper sides of the outdoor panel 441 and the vibration-stop member 443 of the lower frame 44 are located on the indoor side of the outdoor facing panel 227 of the lower frame 22. The protrusions 442 of the outdoor plate portion 441 of the lower frame 44 and the protrusions 444 of the anti-sway member 443 are in contact with the indoor surface of the outdoor facing plate portion 227 of the lower frame 22. A gap may be formed between the protrusions 442 of the outdoor plate portion 441 of the lower frame 44 and the protrusions 444 of the anti-sway member 443 and the indoor surface of the outdoor facing plate portion 227 of the lower frame 22, depending on the degree of repulsion between the airtight material 229a of the outdoor upper plate portion 229 and the lower frame 44.

[0076] The upper frame 43 of the outer shoji screen 4C is provided with a protrusion 432 that protrudes outdoors, and the lower frame 44 is provided with a protrusion 442 that protrudes outdoors, so that the outer shoji screen 4C can be prevented from moving outdoors due to negative pressure when high wind pressure is applied. This can reduce interference with the opening and closing of the inner shoji screen 3.

[0077] As shown in Figure 28, a rotation restraint member 47 is attached to the upper end of the glass groove portion 46a of the door frame 46 of the outer door screen 4C. The rotation restraint member 47 is provided to prevent the door frame 46 and the upper frame 43 from rotating relative to each other in strong winds.

[0078] As shown in Figures 15, 28, and 29, the joint frame 46 has a groove bottom plate portion 465, an outdoor groove side plate portion 466, and an indoor groove side plate portion 467. The groove bottom plate portion 465 forms the bottom of the glass groove portion 46a. The outdoor groove side plate portion 466 forms the outdoor side of the glass groove portion 46a. The outdoor groove side plate portion 466 protrudes from the outdoor edge of the groove bottom plate portion 465 to the other widthwise side, i.e., toward the double-glazed glass 42. The tip of the outdoor groove side plate portion 466 is provided with a folded portion 466a that protrudes indoors. The folded portion 466a at the upper end of the joint frame 46 is notched. The indoor groove side plate portion 467 forms the indoor side of the glass groove portion 46a. The indoor groove side panel 467 protrudes from the indoor edge of the groove bottom panel 465 to the other widthwise side, i.e., toward the double-glazed glass 42. A folded portion 467a that protrudes toward the outdoor side is provided at the tip of the indoor groove side panel 467. The folded portion 467a at the upper end of the joint frame 46 is cut out.

[0079] As shown in Figures 14, 28, and 29, the upper frame 43 has a groove bottom plate portion 435, an outdoor groove side plate portion 436, and an indoor groove side plate portion 437. The groove bottom plate portion 435 forms the bottom of the glass groove portion 43a. The outdoor groove side plate portion 436 forms the outdoor side of the glass groove portion 43a. The outdoor groove side plate portion 436 protrudes downward from the outdoor edge of the groove bottom plate portion 435, i.e., toward the double-glazed glass 42. The indoor groove side plate portion 437 forms the indoor side of the glass groove portion 43a. The indoor groove side plate portion 437 protrudes downward from the indoor edge of the groove bottom plate portion 435, i.e., toward the double-glazed glass 42.

[0080] 28 and 29, the end portions on one side of the width of the groove bottom plate portion 435, outdoor groove side plate portion 436, and indoor groove side plate portion 437 of the upper frame 43, i.e., the end portions on the side of the joint frame 46, are referred to as joint side end portions 435a, 436a, 437a. The joint side end portions 435a, 436a, 437a of the groove bottom plate portion 435, outdoor groove side plate portion 436, and indoor groove side plate portion 437 of the upper frame 43 are located at the upper end portion inside the glass groove portion 46a of the joint frame 46, in the part where the folded portions 466a, 467a of the joint frame 46 are cut out.

[0081] As shown in Figure 28, the joint side end portion 436a of the outdoor gutter side panel portion 436 of the upper frame 43 is positioned overlapping the indoor side of the outdoor gutter side panel portion 466 of the joint frame 46. The joint side end portion 436a of the outdoor gutter side panel portion 436 of the upper frame 43 is positioned on top of the folded portion 466a of the outdoor gutter side panel portion 466 of the joint frame 46. The joint side end portion 437a of the indoor gutter side panel portion 437 of the upper frame 43 is positioned overlapping the outdoor side of the indoor gutter side panel portion 467 of the joint frame 46. The joint side end portion 437a of the indoor gutter side panel portion 437 of the upper frame 43 is positioned on top of the folded portion 467a of the indoor gutter side panel portion 467 of the joint frame 46. The groove bottom plate portion 435 of the upper frame 43 is positioned at the height of the upper end of the joint frame 46.

[0082] As shown in Figures 28, 30 to 32, the rotation restraint member 47 has a fixed plate 471, an outdoor-side plate 472, and an indoor-side plate 473. The rotation restraint member 47 is a generally C-shaped member. The fixed plate 471 is formed in a flat plate shape. The fixed plate 471 is fixed to the upper end portion of the groove bottom plate 465 of the door frame 46 with fasteners 474 such as screws, with the plate surface facing the width direction. The fixed plate 471 has holes 471a into which the fasteners 474 are inserted. In the above-mentioned position, the plate surface of the fixed plate 471 has an elongated shape that is longer in the indoor / outdoor direction than in the vertical direction. A spacer 475 that contacts the edge of the double-glazed glass 42 is provided on the other widthwise surface of the fixed plate 471, i.e., the surface on which the double-glazed glass 42 is installed.

[0083] The outdoor-side panel 472 protrudes from the outdoor-side edge of the fixed panel 471 to the other widthwise side, i.e., the side where the double-glazing 42 is provided. The indoor-side panel 473 protrudes from the indoor-side edge of the fixed panel 471 to the other widthwise side, i.e., the side where the double-glazing 42 is provided.

[0084] The outdoor side plate portion 472 is positioned on the indoor side of the overlapping portion between the outdoor gutter side plate portion 466 of the joint frame 46 and the outdoor gutter side plate portion 436 of the upper frame 43. The outdoor side plate portion 472 is in contact with the indoor surface of the joint side end portion 436a of the outdoor gutter side plate portion 436 of the upper frame 43. The joint side end portion 436a of the outdoor gutter side plate portion 436 of the upper frame 43 is sandwiched between the outdoor gutter side plate portion 466 of the joint frame 46 and the outdoor side plate portion 472. The indoor side plate portion 473 is positioned on the outdoor side of the overlapping portion between the indoor gutter side plate portion 467 of the joint frame 46 and the indoor gutter side plate portion 437 of the upper frame 43. The indoor side plate portion 473 is in contact with the outdoor surface of the joint side end portion 437a of the indoor gutter side plate portion 437 of the upper frame 43. The joint side end portion 437a of the indoor gutter side plate portion 437 of the upper frame 43 is sandwiched between the indoor gutter side plate portion 467 of the joint frame 46 and the indoor side plate portion 473.

[0085] As described above, the rotation restraint member 47 provided on the door frame 46 of the outer door screen 4C prevents the upper frame 43 from rotating around an axis extending in the width direction during high wind pressure. This prevents the door frame 46 of the outer door screen 4C from being displaced or deformed by the rotation, and prevents interference between the smoke deflector portion 468 of the door frame 46 of the outer door screen 4C and the smoke deflector portion 368 of the door frame 36 of the inner door screen 3. As a result, the opening and closing of the inner door screen 3 can be prevented from being hindered.

[0086] As shown in Figure 14, the upper frame 21 of the second embodiment has a hollow portion 21c formed on the outdoor side. The lower frame 22 of the second embodiment has a hollow portion 22a formed on the indoor side and a hollow portion 22b formed on the outdoor side. In the fitting 1C of the second embodiment, hollow portions similar to those of the fitting 1 of the first embodiment are indicated in the drawings with the same reference numerals as the corresponding hollow portions of the first embodiment.

[0087] The present disclosure is not limited to the above-described embodiments and may be modified as appropriate. The fitting 1 may be provided with only one of the upper frame reinforcement member 25 and the lower frame reinforcement member 26. The upper frame reinforcement member 25 may be attached to the upper frame 21 along the length, i.e., the entire width. The widthwise range over which the upper frame reinforcement member 25 is attached to the upper frame 21 may be set as appropriate, and the upper frame reinforcement member 25 may be restricted from moving in the widthwise direction relative to the upper frame 21. The lower frame reinforcement member 26 may be attached to the lower frame 22 along the length, i.e., the entire width. The widthwise range over which the lower frame reinforcement member 26 is attached to the lower frame 22 may be set as appropriate. The lower frame reinforcement member 26 may be attached at a position that is not below the inner shoji screen 3 when the inner shoji screen 3 and the outer shoji screen 4 close the opening 11. The shapes of the upper frame reinforcement member 25 and the lower frame reinforcement member 26 may be set as appropriate. The lower frame reinforcing member 26 may be provided on only one of the upper and lower sides of the outdoor-side upper plate portion 229.

[0088] The fitting 1 does not have to be provided with the upper load transmission member 51 and the lower load transmission member 52. The fitting 1 may be provided with only one of the upper load transmission member 51 and the lower load transmission member 52. The indoor board portion 261b of the upper reinforcing portion 261 of the lower frame reinforcing member 26 may protrude outdoors beyond the door roller mounting portion 221b. A portion of the indoor board portion 261b may be provided outside the range of the indoor / outdoor dimension of the door roller mounting portion 221b.

[0089] The fitting 1C of the second embodiment may be an aluminum-resin composite sash made of a combination of aluminum and resin. The fitting 1C of the second embodiment may be provided with a lower frame reinforcement member 26, an upper load transmission member 51, and a lower load transmission member 52. The fitting 1C of the second embodiment may not be provided with a rotation restraint member 47. Both or one of the protrusions 432, 434 on the upper frame 43 and the protrusions 442, 444 on the lower frame 44 of the outer shoji screen 4C of the fitting 1C of the second embodiment may not be provided. In a fitting in which the inner shoji screen 3 is fixed and the outer shoji screen 4 is slidably supported on the frame body 2, a frame reinforcement member such as the one described above may be provided.

[0090] The fixtures 1, 1B, and 1C may be fixtures for buildings or may be fixtures for houses. [Explanation of symbols]

[0091] 1,1B,1C fittings, 2 frame body, 3 inner shoji screen, 4,4C outer shoji screen, 11 opening, 12 joining part, 21,21B upper frame, 22,22B lower frame, 23,24 vertical frame, 25,25B,27 upper frame reinforcement member, 26,26B lower frame reinforcement member, 31 frame, 32 double glazing, 36 joining frame, 41 frame, 42 double glazing, 46 joining frame, 47 rotation restraint member, 51 upper load transmission member, 52 lower load transmission member, 221,221B inner shoji lower rail, 221a rising part, 221b door roller mounting part, 222 outer shoji lower rail, 253,261a,262a,273 Base, 254, 261b, 262b, 274 Indoor board, 257 Screw, 276 Shoji restraint, 277 Shoji pull-out, 431, 441 Outdoor board, 432, 442 Projection

Claims

1. a frame body provided on an edge of the opening of the body; An inner screen and an outer screen supported by the frame body, The upper and lower frames of the frame body each have a rail that restricts the movement of the inner shoji screen toward the outside, A reinforcing member is provided on the outdoor side of the rail of at least one of the upper frame and the lower frame, The reinforcing member is A base and an indoor panel portion connected to the indoor side of the base, the base is fixed to either the upper frame or the lower frame; The indoor panel portion is a fixture that is placed along the outdoor surface of the rail.

2. The fixture according to claim 1, wherein the inner and outer shoji screens are each slidably supported on the frame body.

3. 3. The fixture according to claim 2, wherein the reinforcing member is provided near the joint where the respective joint frames overlap in the indoor / outdoor direction when the inner and outer shoji screens close the opening.

4. The fixture according to claim 2, wherein the reinforcing member is positioned either above or below the position where either the inner shoji screen or the outer shoji screen is positioned when the inner shoji screen or the outer shoji screen closes the opening.

5. The fixture according to claim 2, wherein a part that fills the gap between the rail and the upper and lower frames of the inner shoji screen is attached to the end of the frame on the side opposite the indoor panel.

6. The reinforcing member is an upper frame reinforcing member provided on the outdoor side of the rail of the upper frame, The fixture according to claim 2, wherein the base is fixed to the upper frame with a screw and can slide widthwise relative to the upper frame by loosening the screw.

7. the reinforcing member is a lower frame reinforcing member provided on the outdoor side of the rail of the lower frame, The rail is A door roller mounting section on which the door roller of the inner shoji screen is mounted; a support portion that supports the door roller mounting portion from below, The indoor panel portion of the lower frame reinforcement member is arranged along the outdoor side of the support portion and is arranged below the door roller mounting portion within the range of the indoor / outdoor dimensions of the door roller mounting portion.

8. One of the inner and outer shoji screens is a movable shoji screen that is slidably supported on the frame body, and the other is a fixed shoji screen that is restrained from sliding relative to the frame body, The reinforcing member is A shoji restraint portion that restrains the slide of the fixed shoji; The fixture according to claim 1, further comprising a shoji pulling section that pulls the fixed shoji toward the interior of the room.

9. 9. The fixture according to claim 8, further comprising a rotation restriction member provided at the connection between the stile and upper frame of the fixed shoji screen, which restricts the rotation of the upper frame relative to the stile.

10. The upper frame and the lower frame are located on the outdoor side of the upper and lower frames of the fixed shoji screen, respectively, and have facing boards that face the upper and lower frames of the fixed shoji screen, The fixture according to claim 8 or 9, wherein the upper and lower frames of the fixed shoji screen each have a protrusion that protrudes toward the outside.

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