JP2024013965A - Fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting that realizes an equal-pressure structure in an indoor sliding sash with a butt stile to prevent rainwater from entering the indoor side, especially at times of high wind pressure.

SOLUTION: A fitting which is configured to include indoor sliding sashes each having a glass holding groove 45 for holding a glass panel 40 supported by a frame body provided on a building opening and framed on four sides, in which at least two indoor sliding sashes 3A of the sliding sashes have a stile 37 and are butted to each other, the stile 37 has a hollow 37A positioned on the other stile side adjacent to the glass holding groove 45, the indoor sliding sash 3A has an outside air introduction hole provided on a lower stile and communicating with the outdoors and an air introduction hole 38 communicating with the outside air introduction hole and provided on an inside surface adjacent to the glass holding groove 45 in the hollow 37A, and a glass holding space S1 in the glass holding groove 45 and a hollow space S2 in the hollow 37A become equal pressure spaces.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present disclosure relates to fittings.

Conventionally, as shown in Patent Document 1, for example, sashes for buildings have an isobaric structure in which the space inside the stile is made equal to the outside pressure and watertight to prevent outdoor rainwater from drawing indoors. This is what is being done.

JP2020-122367A

For example, in a four-panel sliding sash, etc., inside the frame, an outer shoji has a part that communicates with the outdoors (a part that comes into contact with the outside air) between the vertical frame and the vertical stile, but there is a part between the outer shoji that communicates with the outside air. The two inner shoji screens will be placed only on the outside surface of the butt stile, which is directly exposed to outside air, rain and wind. It is difficult to form an equal pressure space by providing air introduction holes on the outer surface, and it has been difficult to introduce a sufficient amount of outside air into the four-panel internal shoji. Therefore, in the case of a four-panel sliding sash, there was a problem in that an equal pressure space could not be maintained because the amount of outside air sent into the space of the inner shoji was insufficient. There is room for improvement in this respect, as rainwater may infiltrate indoors due to the inability to maintain an equal pressure space.

The present disclosure provides a fitting that achieves an equal pressure structure in an interior shoji screen having butt frames, and can prevent rainwater from entering indoors, especially during high wind pressure.

A fitting according to one aspect of the present disclosure includes a frame provided in an opening of a building and framed on all sides, and a shoji that is supported by the frame and has a glass holding groove for holding a glass panel, At least two inner shoji are abutted against each other with a butt stile, the abutment stile has a hollow located adjacent to the glass retaining groove on the side of the other abutment stile, and the inner shoji , an outside air introduction hole provided in at least one of the lower stile and the upper stile and communicating with the outdoors; and an air introduction hole communicated with the outside air introduction hole and provided on the inner surface of the hollow adjacent to the glass holding groove. , the glass holding space in the glass holding groove and the hollow space in the hollow become an equal pressure space.

FIG. 2 is a front view of the sliding sash according to the first embodiment of the present disclosure, viewed from the indoor side. FIG. 2 is a longitudinal cross-sectional view of the double sliding sash shown in FIG. 1. FIG. FIG. 2 is a horizontal sectional view of the double sliding sash shown in FIG. 1. FIG. It is a horizontal cross-sectional view of a butt stile. 5 is a side view taken along the line II shown in FIG. 4, and is a side view of the butt stile seen from outside. FIG. 5 is a side view taken along the line II-II shown in FIG. 4, when the butt frame is viewed from the glass panel side. FIG. FIG. 2 is a vertical cross-sectional view of a main part showing a state in which outside air is introduced into the inner shoji. It is a principal part horizontal sectional view showing the introduction state of the outside air in an inner shoji. It is a front view of the draw sash according to the second embodiment, viewed from the indoor side. 10 is a longitudinal cross-sectional view of the draw sash shown in FIG. 9. FIG. 10 is a horizontal sectional view of the draw sash shown in FIG. 9. FIG.

(First embodiment)
As shown in FIG. 1, in the first embodiment, a four-panel sliding sash 100 provided in an opening of a building will be described as an example of a fitting.

The double sliding sash 100 includes a frame 2 provided in an opening of a building and framed on all sides, and four sliding shoji 3 supported by the frame 2. The double sliding sash 100 is an inner shoji 3A in which the two shojis 3 in the left and right center of the four shojis 3 have butt frames 37 and are located on the indoor side. The outer shoji located on the outdoor side on both the left and right sides of the central two inner shoji 3A are designated by the reference numeral 3B.

In the following explanation, the direction along the horizontal direction connecting the outdoor side (+Z side shown in Figure 2, etc.) and the indoor side (-Z side shown in Figure 2, etc.) is referred to as the indoor-outdoor direction (direction of arrow Z in the figure). It is called. The direction perpendicular to the indoor-outdoor direction Z and along the horizontal direction is referred to as the left-right direction (direction of arrow X in the figure). A direction perpendicular to the indoor-outdoor direction Z and the left-right direction X is referred to as the up-down direction (direction of arrow Y in the figure). In each component, the side away from the center in the indoor-outdoor direction Z and the left-right direction X may be referred to as the outside, and the side toward the center may be referred to as the inside. In the parts constituting the double sliding sash 100, the indoor/outdoor direction Z may be referred to as the viewing direction, and the surface direction perpendicular to the viewing direction may be referred to as the finding direction.

The frame body 2 is formed into a four-sided frame shape. The frame body 2 has an upper frame 21, a lower frame 22, and a pair of vertical frames 23. The frame body 2 is made of aluminum. The frame 2 may be made of a metal shape such as an aluminum alloy, an aluminum resin composite (a structure in which an aluminum member and a resin member are assembled), or a member made only of resin. It may be composed of.

The upper frame 21 and the lower frame 22 extend in the left-right direction X. The vertical frame 23 extends in the vertical direction Y. Each vertical frame 23 connects an end of the upper frame 21 and an end of the lower frame 22.

As shown in FIG. 2, the upper frame 21 has a pair of rail guide walls 211 and 212 that extend along the left-right direction X and are spaced apart in the indoor-outdoor direction Z. The upper end of the inner shoji 3A is fitted into the inner rail 211 on the indoor side so as to be slidable in the left-right direction X. The upper end of the outer shoji 3B is fitted into the outer rail 212 on the outdoor side so as to be slidable in the left-right direction X. Note that the shape of the upper frame 21 is not limited to the shape having a pair of rail guide walls 211 and 212 as shown in FIG. good.

The lower frame 22 has an upper section 221 , an inner wall 222 , an inner rail 223 , a lower section 224 , an outer wall 225 , and an outer rail 226 . The lower frame 22 is formed into a stepped shape by an upper part 221 and a lower part 224. Note that the shape of the lower frame 22 is not limited to a shape with a step-like step as shown in FIG. 2; for example, a horizontally flat lower frame with no steps may be adopted. good.

The upper section 221 is arranged on the indoor side of the lower frame 22. The upper stage portion 221 is formed in a plate shape and extends in the left-right direction X with the plate surface facing upward. The inner wall 222 protrudes upward at the indoor side of the upper section 221. The inner wall 222 is provided with an airtight material support portion 222a. The airtight material support portion 222a supports the first airtight material 24, which extends and projects toward the outdoors, from the indoor side. The first airtight material 24 extends along the longitudinal direction of the lower frame 22. The inner wall 222 is in contact with the indoor side surface of the lower stile 35 of the inner shoji 3A from the indoor side via the first airtight material 24. The inner rail 223 protrudes upward at the outdoor side position of the upper stage portion 221 and rotatably supports the door roller 43 of the inner shoji 3A.

The lower section 224 is arranged closer to the outdoors than the upper section 221. The lower part 224 is formed in a plate shape and extends in the left-right direction X with the plate surface facing upward. The outer wall 225 projects upward at the outdoor side of the lower section 224 . An airtight material support portion 227 that extends and projects toward the outdoors is provided at a position on the outdoor side of the upper stage portion 221. An airtight material mounting portion 227a that holds the second airtight material 25 is provided at the outdoor end of the airtight material support portion 227. The second airtight material 25 extends along the longitudinal direction of the lower frame 22 and contacts the indoor side surface of the lower stile 32 of the outer shoji 3B from the indoor side. The outer rail 226 protrudes upward at a position between the outer wall 225 of the lower step portion 224 and rotatably supports the door roller 44 of the outer shoji 3B. The outer rail 226 that supports the outer shoji 3B is arranged at a lower position than the inner rail 223 that supports the inner shoji 3A.

The pair of outer shoji 3B on both sides in the left-right direction are each arranged closer to the outdoors than the pair of inner shoji 3A. The outer shoji 3B and the inner shoji 3A are provided on the frame 2 so as to be slidable in the left-right direction X and to be slidable. When the outer shoji 3B and the inner shoji 3A are closed, the outer shoji 3B and the inner shoji 3A close the opening on the inside of the frame 2.

As shown in FIGS. 1 to 3, the outer shoji 3B includes a frame body 30B and a glass panel 40. The frame body 30B is formed into a square frame shape. The frame body 30B has an upper frame 31, a lower frame 32, and a pair of vertical frames 33. The frame body 30B is made of aluminum. The frame body 30B may be made of a metal shape such as an aluminum alloy, an aluminum resin composite (a structure in which an aluminum member and a resin member are assembled), or a member made only of resin. It may be composed of. The upper stile 31 and the lower stile 32 extend in the left-right direction X. The vertical stile 33 extends in the vertical direction Y and connects the end of the upper stile 31 and the end of the lower stile 32.

As shown in FIG. 2, the upper stile 31 includes an outer wall 311, an inner wall 312, an upper wall 313 that connects the upper ends of the outer wall 311 and the inner wall 312, and a rail 212 on the upper side of the upper wall 313, which is airtight. It has a rail hook part 314 that supports the material. The outer wall 311 is placed closer to the outdoors than the glass panel 40. The inner wall 312 is arranged closer to the indoor side than the glass panel 40. The outer wall 311 and the inner wall 312 are formed into plate shapes, and each plate surface is arranged in a direction perpendicular to the indoor/outdoor direction. The outer wall 311 and the inner wall 312 are arranged over substantially the entire length of the outer shoji 3B in the left-right direction X.

The rail hook portion 314 has a groove 314a that is open upward. The groove 314a is fitted into the outer rail 212 of the upper frame 21. The outer shoji 3B is movable along the outer rail 212 of the upper frame 21.

The lower stile 32 has an outer wall 321, an inner wall 322, a lower wall 323 that connects the lower ends of the outer wall 321 and the inner wall 322, and a lower stile main body 324 extending below the lower wall 323. The outer wall 321 is placed closer to the outdoors than the glass panel 40. The inner wall 322 is arranged closer to the indoor side than the glass panel 40. The outer wall 321 and the inner wall 322 are formed into plate shapes, and each plate surface is arranged in a direction perpendicular to the indoor/outdoor direction Z. The outer wall 321 and the inner wall 322 are arranged over substantially the entire length of the outer shoji 3B in the left-right direction X.

The lower stile main body portion 324 extends downward from the lower wall 323 and has a door wheel accommodating groove 324a that is open downward. The door wheel 44 is rotatably supported in the door wheel accommodating groove 324a. The door roller 44 is provided at a position facing the outer rail 226 of the lower frame 22 in the vertical direction Y. The door roller 44 can travel by rolling on the outer rail 226 of the lower frame 22.

The glass panel 40 of the outer shoji 3B is housed within the frame body 30B. Although the glass panel 40 is a pair of glass, it may be a single glass or the like.

The pair of inner shoji 3A at the center in the left-right direction includes a frame body 30A and a glass panel 40. The frame body 30A is formed into a square frame shape.

As shown in FIGS. 1 to 3, the frame body 30A includes an upper frame 34, a lower frame 35, a joining frame 36, and a butting frame 37. The frame body 30A is made of aluminum. The frame 30A may be made of a metal shape such as an aluminum alloy, an aluminum resin composite (a structure in which an aluminum member and a resin member are assembled), or a member made only of resin. It may be composed of. The upper stile 34 and the lower stile 35 extend in the left-right direction X. The joining stile 36 and the abutting stile 37 extend in the vertical direction Y and connect the ends of the upper stile 34 and the lower stile 35.

As shown in FIG. 2, the upper stile 34 includes an outer wall 341, an inner wall 342, an upper wall 343 that connects the upper ends of the outer wall 341 and the inner wall 342, and a rail 211 that hangs on the upper side of the upper wall 343 and is airtight. It has a rail hook part 344 that supports the material. The outer wall 341 is placed closer to the outdoors than the glass panel 40. The inner wall 342 is arranged closer to the indoor side than the glass panel 40. The outer wall 341 and the inner wall 342 are formed into plate shapes, and each plate surface is arranged in a direction perpendicular to the indoor/outdoor direction. The outer wall 341 and the inner wall 342 are arranged over substantially the entire length of the inner shoji 3A in the left-right direction X.

The rail hooking portion 344 has a groove 344a that is open upward. The inner rail 211 of the upper frame 21 is supported in the groove 344a. The groove 344a can run along the inner rail 211 of the upper frame 21.

The lower stile 35 includes an outer wall 351, an inner wall 352, a lower wall 353 that connects the lower ends of the outer wall 351 and the inner wall 352, and a lower stile body 354 extending below the lower wall 353. The outer wall 351 is placed closer to the outdoors than the glass panel 40. The inner wall 352 is arranged closer to the indoor side than the glass panel 40. The outer wall 351 and the inner wall 352 are formed into plate shapes, and each plate surface is arranged in a direction perpendicular to the indoor/outdoor direction. The outer wall 351 and the inner wall 352 are arranged over substantially the entire length of the inner shoji 3A in the left-right direction X.

The lower wall 353 of the lower stile 35 has a first outside air introduction hole 41 and a second outside air introduction hole 42 that vertically penetrate between the outer wall 351 and the inner wall 352. The outside air introduction holes 41 and 42 are provided, for example, at two locations along the longitudinal direction of the lower stile 35, respectively. Outside air (air E) flows through the first outside air introduction hole 41 and the second outside air introduction hole 42 to the upper side of the lower wall 353 in the lower stile 32, that is, from the lower part of the lower wall 353 to the upper area (see FIGS. 7 and 8). ).

The lower stile main body portion 354 extends downward from the lower wall 353 and has a groove 354a that is open downward. The door wheel 43 is rotatably supported in the groove 354a. The door roller 43 is provided at a position facing the inner rail 223 of the lower frame 22 in the vertical direction Y. The door roller 43 can travel by rolling on the inner rail 223 of the lower frame 22.

The glass panel 40 of the inner shoji 3A is housed within the frame 30A. Although the glass panel 40 is a pair of glass, it may be a single glass or the like.

As shown in FIG. 3, the matching stile 36 overlaps the vertical stile 33 of the outer shoji 3B in the indoor-outdoor direction Z when the inner shoji 3A and the outer shoji 3B are closed.

A glass holding groove 45 having a substantially U-shaped cross section is formed in each of the upper stile 34, the lower stile 35, the matching stile 36, and the abutting stile 37. The peripheral edge of the glass panel 40 is fitted into the glass holding groove 45. The glass surface of the peripheral portion of the glass panel 40 is held down by a glass holding material 46A and a packing 46B that are engaged with each of the frames 34, 35, 36, and 37 (see FIGS. 7 and 8). The packing 46B can also be omitted.

A glass holding space S1 (see FIG. 7) is formed between the glass holding groove 45, the glass holding material 46A, and the packing 46B in each of the frames 34, 35, 36, and 37. The glass holding space S1 communicates with the outdoors through a first outside air introduction hole 41 and a second outside air introduction hole 42 provided in the lower stile 32, and communicates with the hollow 37A of the butt stile 37 through an air introduction hole 38, which will be described later. It communicates with hollow space S2 (see FIG. 8).

As shown in FIG. 4, the butt stile 37 includes an outer wall 371 on the outdoor side, an inner wall 372 on the indoor side, a pair of connecting walls 373, 374 that connect the outer wall 371 and the inner wall 372, and a pair of connecting walls 373, 374. and an intermediate wall 375 that connects at a substantially midway point in the indoor/outdoor direction Z.

As shown in FIG. 3, abutting airtight material 377 extending in the vertical direction Y is provided at the abutting portion 376 of either or both of the pair of inner shoji 3A. The butt airtight material 377 is disposed along the entire length of both or one of the butt portions 376 in the vertical direction Y. The abutting airtight material 377 is in airtight contact with the abutting part constituent member so that no gap is generated in the abutting part 376 when the abutting frames 37 of the pair of inner shoji 3A are abutted against each other.

A hollow 37A is formed in the abutting stile 37, which is formed in a hollow shape along the outer wall 371 between the outer wall 371 and the inner wall 372, and extends over the entire length in the vertical direction Y. The hollow 37A is composed of an outer wall 371, a pair of connecting walls 373, 374, and an intermediate wall 375, and forms a hollow space S2 extending in the vertical direction Y.

As shown in FIGS. 4 to 6, a plurality of air introduction holes 38 are formed on the inner surface 373a of the first connecting wall 373 adjacent to the glass holding groove 45 among the pair of connecting walls 373 and 374 that constitute the hollow 37A. It is formed. The inner surface 373a of the first connecting wall 373 is a part of the glass holding groove 45. The air introduction hole 38 communicates with the outside air introduction holes 41 and 42 via the glass holding space S1, which is an equal pressure space within the glass holding groove 45. In other words, the glass holding space S1 in the glass holding groove 45 and the hollow space S2 in the hollow 37A communicate with each other to form an equal pressure space.

A plurality of air introduction holes 38 (here, four) are arranged in the vertical direction at the lower part of the inner surface 373a of the hollow 37A. The air introduction hole 38 has a circular hole shape, and is set to have a diameter of about 8 mm, for example. The air introduction hole 38 preferably has a total opening area of 15.7 mm ² or more formed on the inner surface 373a. That is, the total opening area of the air introduction hole 38 formed on the inner surface 373a is calculated based on the amount of air introduced into the hollow space S2 in the hollow 37A, and the hole shape and number of holes are calculated.

The function of the sliding sash 100 (joint fittings) will be explained in detail based on the drawings. As shown in FIGS. 2 and 3, the double sliding sash 100 has a frame 2 provided in an opening of a building and framed on all sides, and a glass holding groove 45 that is supported by the frame 2 and holds the glass panel 40. Equipped with 3 shoji screens. The two inner shoji 3A have butt frames 37 and are butted against each other. The butt stile 37 has a hollow 37A located adjacent to the glass holding groove 45 on the other butt stile side. The interior shoji 3A includes outside air introduction holes 41 and 42 that are provided in at least one of the lower stile 35 and the upper stile 34 (the lower stile 35 in this embodiment) and that communicate with the outdoors, and that communicate with the outside air introduction holes 41 and 42. , and an air introduction hole 38 provided on the inner surface 373a adjacent to the glass holding groove 45 in the hollow 37A. The glass holding space S1 in the glass holding groove 45 and the hollow space S2 in the hollow 37A become equal pressure spaces.

As shown in FIGS. 7 and 8, outside air (air E) is introduced into the glass holding space S1 through outside air introduction holes 41 and 42 provided in the inner shoji 3A. Air E in the glass holding space S1 is sent into the hollow space S2 in the hollow 37A of the butt stile 37 that communicates with the glass holding space S1 through the air introduction hole 38. The internal shoji 3A can sufficiently secure an air route for sending in a large amount of outside air by the equal pressure space formed between the glass holding space S1 and the hollow space S2 of the butt stile 37. The double sliding sash 100 can increase the amount of outside air sent into the equal pressure space formed in the inner shoji 3A.

In the double sliding sash 100, it is possible to realize an equal pressure structure in the inner shoji 3A having the butt frames 37, so that, for example, when the two inner shoji 3A are closed, they are not adjacent to the vertical frame 23 of the frame 2. Even with a four-panel sliding sash, it is possible to more reliably prevent rainwater from being drawn into the building and entering the house during high wind pressure.

The double-sliding sash 100 does not require air introduction holes to be provided in the outer wall 371 of the butt stile 37, which is directly exposed to outside air and wind and rain, or the number of air introduction holes can be reduced or the structure can be simplified. The double-sliding sash 100 can suppress the deterioration in appearance caused by forming holes in the outer wall 371 exposed to the outdoors, and can improve the design.

In the double sliding sash 100, when the outside air introduction holes 41 and 42 are provided in the lower stile 35, the air introduction hole 38 is provided at the lower part of the inner surface of the hollow 37A, which is close to the outside air introduction holes 41 and 42 in the vertical direction Y. Therefore, the air E in the glass holding space S1 can be efficiently introduced into the hollow space S2.

Since the opening area of the air introduction hole 38 is 15.7 mm ² or more, the air E in the glass holding space S1 can be efficiently introduced into the hollow space S2.

The double-sliding sash 100 according to the present embodiment realizes an equal pressure structure in the inner shoji 3A having the butt frames 37, and can prevent rainwater from entering the room even when the wind pressure is particularly high.

(Second embodiment)
As shown in FIGS. 9 to 11, the second embodiment uses a drawn sash 100A as a fitting, in which a pair of outer shoji 3B are fixed on both sides in the left and right direction, and is provided with two inner shoji 3A having an abutting stile 37. This is an example. The structure of the internal sliding sash 3A of the draw sash 100A is also configured similarly to the double sliding sash 100 of the first embodiment described above.

The draw sash 100A includes a frame 2 provided in an opening of a building and framed on all sides, and a shoji 3 supported by the frame 2 and having a glass holding groove 45 for holding a glass panel 40. The two inner shoji 3A have butt frames 37 and are butted against each other. The butt stile 37 has a hollow 37A located adjacent to the glass holding groove 45 on the other butt stile side. The inner shoji 3A has outside air introduction holes 41 and 42 provided in at least one of the lower stile 35 and the upper stile 34 (here, the lower stile 35) and communicates with the outdoors, and a hollow 37A that communicates with the outside air introduction holes 41 and 42. and an air introduction hole 38 provided on the inner side surface 373a adjacent to the glass holding groove 45 at. The glass holding space S1 in the glass holding groove 45 and the hollow space S2 in the hollow 37A become equal pressure spaces.

In the drawn sash 100A, outside air is introduced into the glass holding space S1 through the outside air introduction holes 41 and 42 provided in the inner shoji 3A. The air in the glass holding space S1 is sent into the hollow space S2 in the hollow 37A of the butt stile 37 that communicates with the glass holding space S1 through the air introduction hole 38. The drawn sash 100A can sufficiently secure an air route for sending more outside air into the equal pressure space formed between the glass holding space S1 and the hollow space S2 of the butt stile 37. The drawn sash 100A can increase the amount of outside air sent into the equal pressure space formed in the inner shoji 3A.

In the draw sash 100A, it is possible to realize an equal pressure structure in the inner shoji 3A having the abutting frames 37, so for example, when the two inner shoji 3A are closed, the draw sash 100A can realize a draw sash that is not adjacent to the vertical frame 23 of the frame body 2. Even with a sash, it is possible to more reliably prevent rainwater from being drawn into the house and entering the house during times of high wind pressure.

Although the embodiments of the fittings according to the present disclosure have been described above, the present disclosure is not limited to the above embodiments.

For example, in the first embodiment, a four-panel sliding sash 100 having two central inner shoji 3A is used, and in the second embodiment, a pair of outer shoji 3B are fixed on both sides in the left and right direction and have a butt stile 37. Although the drawing sash 100A provided with two inner sliding doors 3A is taken as an example of the fittings, the fittings are not limited to these fittings. In short, it is applicable to a fitting in which at least two inner shoji 3A of the shoji 3 have butt frames 37 and are butted against each other.

Moreover, the vertical position of the air introduction hole 38 provided in the inner surface 373a of the hollow 37A is not limited. For example, when the outside air introduction holes 41 and 42 are provided in the upper stile 31, the air introduction hole 38 may be provided in the upper part of the inner surface 373a. Thereby, since the air introduction hole 38 is provided at the upper part of the inner surface 373a of the hollow 37A, which is close to the outside air introduction holes 41 and 42 in the vertical direction Y, the air in the glass holding space S1 can be efficiently transferred to the hollow space S2. It can be introduced within.

Further, the hole diameter, hole size, hole shape, hole number, and hole position of the air introduction hole 38 can be changed as appropriate. In short, it is sufficient to provide ventilation between the glass holding space S1 in the glass holding groove 45 and the hollow space S2 in the hollow 37A. The configuration of the air introduction hole 38 can be set.

Furthermore, in this embodiment, the outside air introduction holes 41 and 42 are provided in the lower stile 32 of the inner shoji 3A, but the outside air introduction holes are not limited to the lower stile 32, and the outside air introduction holes are provided in the upper stile 31. Alternatively, both the lower stile 32 and the upper stile 31 may be provided with outside air introduction holes. Further, the positions, hole shapes, number of holes, and other configurations of the outside air introduction holes 41 and 42 in the stile can also be set at appropriate locations.

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the spirit of the present disclosure.

100...Sliding sash (fittings), 100A...Drawing sash (fittings), 2...Frame body, 3...Shoji, 3A...Inner shoji, 3B...Outer shoji, 30A, 30B...Frame body, 31, 34...Upper stile, 32, 35...Lower stile, 33...Vertical stile, 36...Matching stile, 37...Butting stile, 38...Air introduction hole, 41...First outside air introduction hole, 42...Second outside air introduction hole, 45...Glass holding groove , 371...Outer wall, 372...Inner wall, 373, 374...Connecting wall, 373a...Inner surface, 375...Intermediate wall, S1...Glass holding space, S2...Hollow space, X...Left and right direction, Y...Upper and lower direction, Z...Year Inward/outward direction

Claims (6)

A frame installed in the opening of a building and framed on all sides,
a shoji having a glass holding groove supported by the frame and holding the glass panel;
At least two inner shoji of the shoji have butt frames and are butted against each other,
The butt stile has a hollow on the other butt stile side adjacent to the glass holding groove,
The inner shoji is
an outside air introduction hole provided in at least one of the lower stile and the upper stile and communicating with the outdoors;
an air introduction hole that communicates with the outside air introduction hole and is provided on an inner surface of the hollow adjacent to the glass holding groove,
A fitting in which a glass holding space in the glass holding groove and a hollow space in the hollow are equal pressure spaces. The air introduction hole is provided at a lower part of the inner surface of the hollow.
The fitting according to claim 1. The air introduction hole is provided at an upper part of the inner surface of the hollow.
The fitting according to claim 1. The opening area of the air introduction hole is 15.7 mm ² or more,
The fitting according to claim 1. The central two shojis are a four-panel sliding sash having the inner shoji having the butt stile,
The fitting according to any one of claims 1 to 4. A drawn sash including the inner shoji having the butt frame;
The fitting according to any one of claims 1 to 4.

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