JP7425838B2 - opening building materials - Google Patents

Description

The present invention relates to an opening building material that includes an inner window provided on the indoor side of an outer window.

Conventionally, in order to improve heat insulation and sound insulation, internal windows have sometimes been installed on the indoor side of existing windows (external windows). In such double-glazed windows, when the outer window receives strong wind pressure (positive pressure, negative pressure), the intermediate layer between the outer window and the inner window is compressed by the outer window, or is pulled and expanded. As a result, the pressure in the intermediate layer changes, which may deform or damage the inner window. In order to prevent this, all sash manufacturers warn people to open the inner windows slightly during strong winds or when people are absent for long periods of time (see Non-Patent Document 1), which impairs the effectiveness of the inner windows. Furthermore, when internal windows are installed in mid-to-high-rise buildings, the operating environment due to wind pressure becomes worse than in the case of detached houses, so the risk of the internal windows becoming deformed or damaged increases.

Sankyo Tateyama Co., Ltd. Instruction manual "Usage and Care Handbook" published by Sankyo Aluminum Co., Ltd. (Catalog No. STJ1158D TS.17.11-012), November 2017, p. 348

In view of the above-mentioned circumstances, the present invention aims to provide an opening building material that can prevent inner windows from being deformed or damaged.

In order to achieve the above object, the opening building material according to the invention described in claim 1 is provided with an inner window provided on the indoor side of the outer window, an intermediate layer is formed between the outer window and the inner window, and the inner window is provided with an inner window provided on the indoor side of the outer window. The window has a frame, and an outer shoji and an inner shoji provided within the frame . The outer shoji has a soft material that closes the gap with the facing surface on one side indoors and outdoors, and a soft material that closes the gap between the facing surface of the inner shoji and the other side indoors and outdoors. The inner shoji has a soft material on one side of the interior and exterior that closes the gap between the upper and lower frames and the holding part, and the inner shoji has a soft material on one side of the interior and exterior that closes the gap between the upper and lower frames and the holding part As the outer shoji and inner shoji move indoors when positive pressure is applied, the soft material between the upper and lower frames and the outer shoji, the soft material between the vertical frame and the outer shoji, and the soft material between the upper and lower frames and the inner shoji When either the soft material or the soft material between the vertical frame and the inner shoji separates, pressure is released from the middle layer to the indoor side, and negative pressure is applied to the outer shoji and the inner shoji, the outer shoji and the inner shoji As it moves to the outside, the soft material between the upper and lower frames and the outer shoji, the soft material between the vertical frame and the outer shoji, the soft material between the upper and lower frames and the inner shoji , and the soft material between the vertical frame and the inner shoji The feature is that either one of them separates and releases pressure from the indoor side to the middle layer.

The opening building material according to the invention according to claim 2 includes an inner window provided on the indoor side of the outer window, an intermediate layer is formed between the outer window and the inner window, and the inner window has a frame and a layer inside the frame. The frame has holding parts for holding the shoji on the upper and lower frames , and one vertical frame is made of soft material that closes the gap between the shoji and the facing surface on one side indoors and outdoors. The shoji has a soft material on the other vertical frame that closes the gap with the facing surface of the shoji on the other side indoors and outdoors; It has a soft material on one side, and has a soft material on the other side indoors and outdoors that closes the gap between the lower stile and the holding part , and when positive pressure is applied to the shoji, as the shoji moves indoors, The soft material between the vertical frame and the shoji, the soft material between the upper frame and the shoji, and the soft material between the other vertical frame and the shoji, and the soft material between the bottom frame and the shoji are separated from the middle layer to the indoor side. When negative pressure is applied to the shoji, the soft material between the vertical frame and the shoji, the soft material between the upper frame and the shoji, and the other vertical frame The soft material between the shoji and the shoji and the soft material between the lower frame and the shoji are separated to release pressure from the indoor side to the middle layer.

The opening building material according to the invention according to claim 1 includes an inner window provided on the indoor side of an outer window, an intermediate layer is formed between the outer window and the inner window, and the inner window has a frame and a layer inside the frame. The frame has holding parts for holding the outer shoji and inner shoji on the upper frame and the lower frame , and the vertical frame has a gap between the outer shoji and the mating surface of the outer shoji, which are installed indoors and outdoors. The outer shoji has a soft material that closes the gap between the upper and lower frames and the holding part on one side, and a soft material that closes the gap between the facing surface of the inner shoji and the other side indoors and outdoors. The inner shoji has a soft material on one side of the indoor and outdoor sides that closes the gap between the upper and lower frames and the holding part , and when positive pressure is applied to the outer shoji and the inner shoji, As the shoji and inner shoji move indoors, the soft material between the upper and lower frames and the outer shoji, the soft material between the vertical frame and the outer shoji, the soft material between the upper and lower frames and the inner shoji, and the vertical frame and the inner shoji When one of the soft materials in between separates and pressure is released from the middle layer to the indoor side, and when negative pressure is applied to the outer and inner shoji, the outer and inner shoji move toward the outdoor side. , Either of the soft material between the upper and lower frames and the outer shoji, the soft material between the vertical frame and the outer shoji, the soft material between the upper and lower frames and the inner shoji, and the soft material between the vertical frame and the inner shoji are separated. Since pressure is released from the indoor side to the middle layer, the inner window can be prevented from being deformed or damaged even if it is left closed during strong winds.

The opening building material according to the invention according to claim 2 includes an inner window provided on the indoor side of the outer window, an intermediate layer is formed between the outer window and the inner window, and the inner window has a frame and a layer inside the frame. The frame has holding parts for holding the shoji on the upper and lower frames , and one vertical frame is made of soft material that closes the gap between the shoji and the facing surface on one side indoors and outdoors. The shoji has a soft material on the other vertical frame that closes the gap with the facing surface of the shoji on the other side indoors and outdoors; It has a soft material on one side, and has a soft material on the other side indoors and outdoors that closes the gap between the lower stile and the holding part , and when positive pressure is applied to the shoji, as the shoji moves indoors, The soft material between the vertical frame and the shoji, the soft material between the upper frame and the shoji, and the soft material between the other vertical frame and the shoji, and the soft material between the bottom frame and the shoji are separated from the middle layer to the indoor side. When negative pressure is applied to the shoji, the soft material between the vertical frame and the shoji, the soft material between the upper frame and the shoji, and the other vertical frame Either the soft material between the frame and the shoji or the soft material between the lower frame and the shoji separate and release pressure from the indoor side to the middle layer, so even if the inner window is closed during strong winds, the inner window will not be deformed or damaged. You can prevent this from happening.

FIG. 1 is a cross-sectional view of an opening building material according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of the same opening building material . (a) is a cross-sectional view of the inner window when positive pressure is applied, and (b) is a cross-sectional view of the inner window when negative pressure is applied. It is a longitudinal cross-sectional view of the opening part building material based on 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which expands and shows the upper part of the inner window of the same opening building material . It is a cross-sectional view of the same opening building material . (a) is a longitudinal sectional view of the upper part of the inner window when positive pressure is applied, and (b) is a longitudinal sectional view of the upper part of the inner window when negative pressure is applied. (a) is a cross-sectional view of the inner window on the outer shoji side when negative pressure is applied, and (b) is a cross-sectional view of the inner window on the inner shoji side when positive pressure is applied. It is a longitudinal cross-sectional view of the inner window of the opening part building material based on 3rd Embodiment of this invention. (a) is a longitudinal sectional view of the inner window when positive pressure is applied, and (b) is a longitudinal sectional view of the inner window when negative pressure is applied. It is an indoor side front view which expands and shows a part of shoji of an inner window of an opening building material concerning a 4th embodiment of the present invention. It is a longitudinal cross-sectional view of the inner window of the opening part building material based on 5th Embodiment of this invention. It is a perspective view which expands and shows a part of shoji of the inner window of the same opening building material , Comprising: The state where a baffle plate is open is shown. (a) is a longitudinal sectional view of the inner window when positive pressure is applied, and (b) is a longitudinal sectional view of the inner window when negative pressure is applied. It is a longitudinal cross-sectional view of the inner window of the opening part building material based on 6th Embodiment of this invention. It is a front view of the indoor side of the same opening building material . (a) is a longitudinal sectional view of the inner window when positive pressure is applied, and (b) is a longitudinal sectional view of the inner window when negative pressure is applied. It is a front view of the indoor side of the opening part building material based on 7th Embodiment of this invention. It is a longitudinal cross-sectional view of the inner window of the same opening building material . It is a perspective view which shows the structure of the ventilation component provided in the inner sash of the inner window of the same opening building material . FIG. 3 is a longitudinal cross-sectional view of the inner window when positive pressure is applied. It is a longitudinal cross-sectional view of the shoji of the inner window which shows the modification of the opening building material concerning 7th Embodiment, Comprising: It shows the state when positive pressure is applied. It is a front view of the indoor side of the opening part building material based on 8th Embodiment of this invention. It is a longitudinal cross-sectional view of the shoji of the inner window of the same opening building material , and (a) shows a state in normal times, and (b) shows a state in the event of a fire.

Embodiments of the present invention will be described below based on the drawings. 1 and 2 show a first embodiment of the opening building material of the present invention. This opening building material is a double-glazed window by attaching an inner window 2 to the indoor side of a window opening where an existing outer window 1 is attached to the outdoor side.

The outer window 1 includes a frame formed by an upper frame 14, a lower frame 15, and left and right vertical frames 16, 16, and an outer shoji 17 and an inner shoji 18 housed in the frame in a sliding manner so as to be openable and closable. The frames 14, 15, 16 and the frames of the shoji 17, 18 are made of aluminum.

The inner window 2 has a frame formed by attaching an upper frame 8, a lower frame 19, and left and right vertical frames 3a, 3b to the inner circumferential surface of a picture frame 20 without a frame, and a frame that can be opened and closed in a sliding manner within the frame. It is equipped with an outer shoji 6 and an inner shoji 7 that are housed in a. The outer shoji 6 and the inner shoji 7 are constructed by assembling an upper stile 21, a lower stile 22, a door stile 23, a matching stile 24, and fitting a glass 25 inside the stile. The frames 3a, 3b, 8, 19 and the frames 21, 22, 23, 24 of the shoji 6, 7 are made of resin.

As shown in FIG. 1, the inner window 2 has soft fins 4a, 4b extending from the inner circumferential sides of the left and right vertical frames 3a, 3b toward the door edge 6a of the outer shoji 6 and the door edge 7a of the inner shoji 7. The soft fins 4a, 4b close the gaps between the vertical frames 3a, 3b and the door edges 6a, 7a of the shoji 6, 7. Two soft fins 4a and 4b are provided on the left and right vertical frames 3a and 3b at intervals in the indoor and outdoor directions.

When positive pressure is applied to the outer window 1, the intermediate layer 5 between the outer window and the inner window is pushed and compressed by the outer window 1, so as shown in FIG. 3(a), positive pressure is also applied to the inner window 2. (see arrow 26 in the figure), and the air pressure in the middle layer 5 becomes higher than that on the indoor side. Then, the soft fins 4a, 4b provided on the left and right vertical frames 3a, 3b are deformed so as to bend toward the indoor side, and the tips of the soft fins 4a, 4b are separated from the door edges 6a, 7a of the shoji 6, 7. Air flows from the intermediate layer side to the indoor side through the gaps between the tips of the soft fins 4a, 4b and the door edges 6a, 7a of the shoji screens 6, 7 (see arrow 27 in the figure). As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
On the other hand, when negative pressure is applied to the outer window 1, the intermediate layer 5 between the outer window and the inner window is pulled by the outer window 1 and expands, so that the inner window 2 is also under negative pressure, as shown in FIG. 3(b). (see arrow 28 in the figure), and the air pressure in the middle layer 5 becomes lower than that on the indoor side. Then, the soft fins 4a, 4b provided on the left and right vertical frames 3a, 3b are deformed so as to bend toward the outdoor side, and the tips of the soft fins 4a, 4b are separated from the door edges 6a, 7a of the shoji 6, 7. Air flows from the indoor side to the intermediate layer side through the gaps between the tips of the soft fins 4a, 4b and the door edges 6a, 7a of the shoji screens 6, 7 (see arrow 29 in the figure). As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.

As described above, this opening building material has soft fins 4a, 4b on the inner window 2 that close the gaps between the frames (vertical frames) 3a, 3b and the shoji 6, 7, and Due to the pressure difference between the middle layer 5 and the room, the soft fins 4a and 4b deform and release the pressure in the middle layer 5, so even if the inner window 2 is closed during strong winds, the inner window 2 will not be deformed or damaged. can be prevented from happening.
This opening building material can be easily implemented because it is only necessary to add the soft fins 4a and 4b to the vertical frames 3a and 3b.

4 to 6 show a second embodiment of the opening building material of the present invention. In this opening building material , as shown in FIG. The upper stile 21 has a soft fin 12 that contacts the inner rail 11 only on the indoor side of the inner rail 11 of the upper frame 8. Each soft fin 10, 12 is provided integrally with the upper frame 21.
Further, as shown in FIG. 6, the door edge 6a of the outer shoji 6 is in contact with the inner peripheral side of the vertical frame 3a on the left side when viewed from the indoor side, and the vertical frame 3a is the door edge of the outer shoji 6. It has a soft fin 30a that comes into contact with the interior side surface of the vehicle. The door tip 7a of the inner shoji 7 is in contact with the inner circumferential side of the vertical frame 3b on the right side when viewed from the indoor side, and the vertical frame 3b has a soft fin 30b that is in contact with the outdoor side of the door tip of the inner shoji 7. have.

FIG. 7(a) shows a state when positive pressure is applied to the inner window 2 (see arrow 26 in the figure). At this time, the outer shoji 6 and the inner shoji 7 are pushed by positive pressure and move slightly toward the indoor side, and the soft fins 12 of the upper stile 21 of the inner shoji 7 separate from the inner rail 11 of the upper frame 8, as shown by the arrow in the figure. As shown in 27, air flows from the intermediate layer side toward the indoor side. At the same time, as shown in FIG. 8(b), as the inner shoji 7 moves toward the indoor side, the door edge of the inner shoji 7 separates from the soft fin 30b of the vertical frame 3b, as indicated by arrow 27 in the figure. As such, air flows from the middle layer side toward the indoor side. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
FIG. 7(b) shows a state when negative pressure is applied to the inner window 2 (see arrow 28 in the figure). At this time, the outer shoji 6 and the inner shoji 7 are pulled by the negative pressure and move slightly toward the outside of the room, and the soft fins 10 of the upper stile 21 of the outer shoji 6 separate from the outer rail 9 of the upper frame 8, as shown by the arrow in the figure. As shown in 29, air flows from the indoor side toward the middle layer side. At the same time, as shown in FIG. 8(a), as the outer shoji 6 moves toward the outdoor side, the door tip of the outer shoji 6 separates from the soft fin 30a of the vertical frame 3a, as shown by arrow 29 in the figure. As such, air flows from the indoor side toward the middle layer side. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.

As described above, in this opening building material , the outer shoji 6 has a soft fin 10 that comes into contact with the outer rail 9 only on the outdoor side of the outer rail 9 of the frame (upper frame) 8, and the inner shoji 7 has the following: The inner rail 11 of the frame (upper frame) 8 has a soft fin 12 that contacts the inner rail 11 only on the indoor side, and the outer shoji 6 is caused by the pressure difference between the intermediate layer 5 between the outer window and the inner window and the indoor When the soft fins 10 move toward the outdoor side and move away from the outer rail 9, or when the inner shoji 7 moves toward the indoor side and the soft fins 12 move away from the inner rail 11, the pressure in the intermediate layer 5 is released, so that the pressure in the intermediate layer 5 is released. Even if the inner window 2 remains closed, the inner window 2 can be prevented from being deformed or damaged.
In this opening building material , the outer shoji 6 is provided with a soft fin 10 that contacts the outer rail 9 only on the outdoor side of the outer rail 9 of the frame 8, and the inner shoji 7 is provided with an inner rail only on the indoor side of the inner rail 11 of the frame 8. Since it is only necessary to provide the soft fins 12 that come into contact with the fins 11, it can be easily carried out. Initially, the outer shoji 6 was provided with soft fins that abutted against the outer rail 9 on both the outdoor and indoor sides of the outer rail 9, and the inner shoji 7 was provided with an inner rail 11 on both the outdoor and indoor sides of the inner rail 11. It is also possible to provide soft fins that come into contact with the shoji and later cut off the soft fins on the indoor side of the outer shoji 6 and the soft fins on the outdoor side of the inner shoji 7.

FIG. 9 shows a third embodiment of the opening building material of the present invention. This opening building material has a ventilation part 31 that communicates with the indoor and outdoor directions in the lower stile 22 of the inner shoji 7, and a pendulum-type pendulum that can be rotated indoors and outdoors using the upper end as a fulcrum in the ventilation part 31. A shutter 32 is provided. The shutter 32 is provided with a magnet 33 that also serves as a weight at its lower end, and a magnet 34 that attracts the magnet 33 at the bottom of the shutter is provided in the stile below the ventilation section 31. Also. At the lower end of the shutter 32, soft fins 35 are provided on the outdoor side and the indoor side, which come into contact with the upper surface of the stile on the lower side of the ventilation section 31.

FIG. 10(a) shows a state when positive pressure is applied to the inner window 2 (see arrow 26 in the figure). At this time, the shutter 32 is pushed by positive pressure and rotates toward the indoor side, and air flows through the ventilation portion 31 from the intermediate layer side toward the indoor side, as shown by an arrow 27 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
FIG. 10(b) shows a state when negative pressure is applied to the inner window 2 (see arrow 28 in the figure). At this time, the shutter 32 is pulled by the negative pressure and rotates toward the outdoor side, and air flows from the indoor side toward the intermediate layer side as shown by an arrow 29 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.

As described above, in this opening building material , the shutter 32 rotates toward the indoor side or the outdoor side due to the pressure difference between the intermediate layer 5 between the outer window and the inner window and the indoor area, so that the pressure in the intermediate layer 5 is reduced. escaping, the inner window 2 can be prevented from being deformed or damaged even if the inner window 2 is left closed during strong winds.
This opening building material can handle both positive pressure and negative pressure by providing a vent 31 and a shutter 32 on either the outer shoji 6 or the inner shoji 7.

FIG. 11 shows a fourth embodiment of the opening building material of the present invention. This opening building material is provided with a ventilation part 31 that communicates between the indoor and outdoor directions in the lower stile 22 of at least one of the outer shoji 6 and the inner shoji 7, and a screw that is rotatable around the central axis in the indoor and outdoor directions in the ventilation part 31. A type ventilation component 36 is provided.
When positive or negative pressure is applied to the inner shoji 2, the screw type ventilation part 36 rotates and air flows through the ventilation part 31, thereby releasing the pressure in the middle layer 5, so that the inner window 2 can remain closed during strong winds. However, the inner window 2 can be prevented from being deformed or damaged.

12 and 13 show a fifth embodiment of the opening building material of the present invention. In this opening building material , the lower stile 22 of the outer shoji 6 and the lower stile 22 of the inner shoji 7 are provided with a ventilation part 31 that communicates with the indoor and outdoor directions, and the ventilation part 31 of the outer shoji 6 is located at the upper end on the middle layer side. The ventilation portion 31 of the inner shoji 7 is closed with a baffle plate 37b that is rotatable toward the room side using the upper end as a fulcrum. be.

FIG. 14(a) shows a state when positive pressure is applied to the inner window 2 (see arrow 26 in the figure). At this time, the baffle plate 37b of the inner shoji 7 is pushed by positive pressure and opens toward the indoor side, and air flows through the ventilation portion 31 from the intermediate layer side toward the indoor side, as shown by the arrow 27 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
FIG. 14(b) shows a state when negative pressure is applied to the inner window 2 (see arrow 28 in the figure). At this time, the baffle plate 37a of the outer shoji 6 is pulled by the negative pressure and opens toward the outdoor side, and air flows from the indoor side toward the middle layer side as shown by the arrow 29 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
In this way, the opening building material of this embodiment can also release the pressure of the intermediate layer 5 when positive pressure or negative pressure is applied, so even if the inner window 2 is closed during strong winds, the inner window 2 will deform. This can prevent damage or damage.

15 and 16 show a sixth embodiment of the opening building material of the present invention. In this opening building material , the lower stile 22 of the outer shoji 6 and the lower stile 22 of the inner shoji 7 are provided with ventilation portions 31 that communicate indoors and outdoors, and each ventilation portion 31 is provided with a rubber plate inside the lower stile 22. It is closed by valve bodies 38a and 38b formed by, etc. The valve element 38a provided in the ventilation part 31 of the outer shoji 6 opens only when air is about to flow from the middle layer side to the indoor side, and the valve element 38b provided in the inner shoji 7 opens the ventilation part 31. The portion 31 is provided so as to open only when air is about to flow from the indoor side to the intermediate layer side.

FIG. 17(a) shows a state when positive pressure is applied to the inner window 2 (see arrow 26 in the figure). At this time, the valve body 38a provided in the ventilation part 31 of the outer shoji 6 opens, and air flows through the ventilation part 31 from the intermediate layer side toward the indoor side, as shown by the arrow 27 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
FIG. 17(b) shows a state when negative pressure is applied to the inner window 2 (see arrow 28 in the figure). At this time, the valve body 38b provided in the ventilation part 31 of the inner shoji 7 opens, and air flows from the indoor side toward the middle layer side as shown by the arrow 29 in the figure. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.
In this way, the opening building material of this embodiment can also release the pressure of the intermediate layer 5 when positive pressure or negative pressure is applied, so even if the inner window 2 is closed during strong winds, the inner window 2 will deform. This can prevent damage or damage.

18 to 20 show a seventh embodiment of the opening building material of the present invention. In this opening building material , a ventilation part 31 is provided between the door rollers of the lower stile 22 of the inner shoji 2, and a ventilation part 31 is provided which communicates between the indoor and outdoor directions, and a ventilation component 39 is provided on the indoor side of the ventilation part 31. As shown in FIG. 19, the ventilation component 39 is provided with an L-shaped air flow path 40, and a tapered portion 41 is provided on the upper outlet side of the air flow path 40 to widen the width of the flow path. A cylindrical valve body 42 is disposed at 41 to close the air flow path 40. The upper outlet of the air flow path 40 is closed with a lid 43 provided with a large number of ventilation holes.

FIG. 21 shows the state when positive pressure is applied to the inner window 2 (see arrow 26 in the figure). At this time, the valve body 42 provided in the ventilation component 39 of the inner shoji 7 rises, and as shown by the arrow 27 in the figure, the valve body 42 passes through the ventilation section 31 of the lower stile 22 and the air flow path 40 of the ventilation component 39 to the intermediate layer side. Air flows towards the inside of the room. As a result, the pressure in the intermediate layer 5 escapes, and the pressure in the intermediate layer 5 becomes equal to that of the room.

If the outer shoji 6 of the inner window 2 is also provided with a ventilation section 31 and a ventilation component 39, the pressure in the intermediate layer 5 can be released even when negative pressure is applied.
The valve body 42 is not limited to a cylindrical shape, but may be a polygonal prism (pentagonal or hexagonal).

FIG. 22 shows a modification of the opening building material of the seventh embodiment. This opening building material is provided with a ventilation part 31 that communicates with the indoor and outdoor directions in the lower stile 22 of the shoji 6 or 7, an inclined surface 44 is provided inside the ventilation part 31, and a cylindrical column arranged on the inclined surface 44. The valve body 42 closes the inlet of the ventilation section 31 on the intermediate layer side.
When positive pressure is applied as shown by the arrow 26 in the figure, the valve body 42 rises along the slope 44 and the ventilation section 31 opens, allowing air to flow from the intermediate layer side to the indoor side as shown by the arrow 27 in the figure. flows, releasing the pressure in the intermediate layer 5.

23 and 24 show an eighth embodiment of the opening building material of the present invention. In this opening building material , the upper stile 21 of the outer shoji 6 and the inner shoji 7 is provided with a ventilation section 31 that communicates with the indoor and outdoor directions, and a shutter 45 is provided inside the upper stile 21 so as to be movable up and down. A shielding plate 46 is provided hanging from the shield plate 45 . Holding blocks 47 made of foamed resin or the like are arranged at intervals in the left-right direction on the lower side of the ventilation section 31, and by supporting the shielding plate 46 from below with the holding blocks 47, as shown in FIG. 24(a). As shown in FIG. 3, under normal conditions, the shutter 45 is held at a higher position than the ventilation section 31, so that air can always flow through the ventilation section 31 while blocking the view.

When positive pressure is applied to the inner window 2, air flows through the ventilation portion 31 from the intermediate layer side toward the indoor side, as shown by the arrow 27 in FIG. 24(a), and the pressure in the intermediate layer 5 is released. When negative pressure is applied to the inner window 2, air flows through the ventilation portion 31 from the indoor side toward the middle layer, releasing the pressure in the middle layer 5. Therefore, even if the inner window 2 remains closed during strong winds, the inner window 2 can be prevented from being deformed or damaged.
When a fire occurs, as shown in FIG. 24(b), the holding block 47 melts and the shutter 45 is lowered, and the shutter 45 closes the ventilation section 31. Thereby, flames and smoke can be prevented from passing through the ventilation section 31, and fire prevention performance can be achieved.

The invention is not limited to the embodiments described above. The materials of the outer and inner window frames and shoji frames do not matter. The window types of the outside window and the inside window are not limited to sliding windows, but may be single sliding windows, sliding windows, or the like. The shape and material of the soft fin can be changed as appropriate. The ventilation section provided in the shoji of the inner window is not limited to the lower stile, but can also be provided in the upper stile or vertical stile.

1 Outer window 2 Inner window 3a, 3b Vertical frame (frame)
4a, 4b Soft fin 5 Middle layer 6 Outer shoji (shoji)
7 Internal shoji (shoji)
8 Upper frame (frame)
9 Outer rail 10 Soft fin 11 Inner rail 12 Soft fin

Claims (2)

An inner window is provided on the indoor side of an outer window, an intermediate layer is formed between the outer window and the inner window, and the inner window has a frame and an outer shoji and an inner shoji provided within the frame. The frame has a holding part for holding the outer shoji and the inner shoji in the upper frame and the lower frame , and a soft material in the vertical frame that closes the gap between the outer shoji and the facing surface on one side indoors and outdoors, and the inner shoji. The outer shoji has a soft material that closes the gap between the top and bottom frames on the other side, indoors and outdoors. , has a soft material on one side of the indoor and outdoor sides that closes the gap between the upper and lower frames and the holding part , so that when positive pressure is applied to the outer and inner shoji, the outer and inner shoji move toward the indoor side. Accordingly, either the soft material between the upper and lower frames and the outer shoji, the soft material between the vertical frame and the outer shoji, the soft material between the upper and lower frames and the inner shoji, or the soft material between the vertical frame and the inner shoji are separated. When negative pressure is applied to the outer shoji and inner shoji, the soft material between the upper and lower frames and the outer shoji and the vertical The feature is that one of the soft material between the frame and the outer shoji, the soft material between the upper and lower frames and the inner shoji, and the soft material between the vertical frame and the inner shoji is separated to release pressure from the indoor side to the middle layer. and opening building materials. An inner window is provided on the indoor side of an outer window, and an intermediate layer is formed between the outer window and the inner window.The inner window has a frame and a shoji installed within the frame . The frame and lower frame have a holding part that holds the shoji, one vertical frame has a soft material that closes the gap between the shoji's facing surface on one side indoors and outdoors, and the other vertical frame has the shoji's facing surface. The shoji has a soft material that closes the gap between the upper stile and the holding part on one side (indoor and outdoor), and has a soft material that closes the gap between the upper stile and the holding part on one side (indoor and outdoor), and the lower stile and the holding part. There is a soft material on the other side of the indoor and outdoor sides that closes the gap between the vertical frame and the upper frame as the shoji moves towards the indoor side when positive pressure is applied to the shoji. The soft material between the shoji, the soft material between the other vertical frame and the shoji, and the soft material between the bottom frame and the shoji separated, allowing pressure to escape from the middle layer to the indoor side, and negative pressure was applied to the shoji. Sometimes, as the shoji moves to the outside, the soft material between one vertical frame and the shoji, the soft material between the upper frame and the shoji, the soft material between the other vertical frame and the shoji, and the soft material between the bottom frame and the shoji An opening building material characterized by a soft material and one that releases pressure away from the indoor side to the middle layer.

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