JP3233921B1 - High watertightness equipment for outdoor barrier-free sash (drainage mechanism) - Google Patents

Abstract

Abstract: A high drainage mechanism for an outdoor lower frame flat sash relating to a lower frame structure, which is excellent in drainage of rainwater or the like of a barrier-free type in which an upper surface of a sash lower frame is formed flat and has high watertightness against indoor leakage. In providing high watertightness equipment. A drainage recess for an inner sash is provided on a base member of a lower frame having a hollow cross-sectional shape having a lower frame outdoor drainage port with a first and a second rising piece, and a bottom portion of the drainage recess for the inner sash is provided. A recessed drainage port for inner shoji is disposed on the inner side, and the horizontal tight material for inner shoji is inserted between the recessed side wall of the first rising piece disposed on the indoor side and the inner shoji sliding piece hanging from the inner side wall of the inner shroud lower frame. A third rising piece disposed on the indoor side, wherein a drainage recess for a sash is provided at the third and fourth rising pieces; A horizontal tight material for a shoji is disposed between the recess side wall of the shroud and the shoji sliding piece hanging from the inner side wall of the shoji sliding door, and the inner and outer shoji sliding pieces are provided above the inner and outer shrinkage drainage recesses. Inner and outer sliding slide grooves are provided so as to have a predetermined gap between The top flat member for the shoji slide is attached to the base member of the lower frame, or in combination with the base member, the top flat member for the shoji slide is formed on the base member of the lower frame so as to form the inner and outer shoji slide grooves. Fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sash structure in which a sliding door slides in and out of a sash frame attached to an outdoor opening of a building, and more particularly to a barrier-free sash in which an upper surface of a lower frame is formed to be substantially flat. The present invention relates to a high watertightness device for preventing infiltration of rainwater with wind pressure into a room.

[0002]

2. Description of the Related Art In general, a sash frame is formed in an outdoor opening of a building by upper and lower frames and left and right vertical frames, and a sliding door structure is provided in which a sliding door is slidably opened and closed. In this case, conventionally, as shown in FIG. 18, a structure in which a ridge-shaped rail is projected from a sash lower frame and a door wheel attached to a lower frame of a shoji on the rail is generally rotated. . Also, a step is provided so that the indoor side is higher between the outdoor sash rails and the indoor sash rails at the outdoor opening of the building, and a step is provided between the outdoor side and the indoor side in the rail groove. To prevent the infiltration of wind and rain. More specifically, rainwater sprayed on glass etc. falls along the shoji and accumulates in the rail groove of the lower frame, especially the combination of outer and inner shoji, and the door frame and sash vertical frame of the shoji. Although it is easy to stay in the corners of the room, the wall of the rail groove prevents intrusion into the indoor side, and the accumulated rainwater flows out outdoors by its own weight.

However, a barrier-free type sash structure in which the upper surface of the lower frame of the sash is formed flat does not have the rail groove walls. In an outdoor sash, a middle or high-rise building receives a wind pressure of about 500 Pa. In order to prevent rainwater from entering the room due to a pressure difference due to the temperature difference between the outside and the room, secure an airtight line between the shoji and the sash frame, and high drainage from the upper surface of the lower frame that forms the airtight line It was necessary to secure the nature. In addition, 3-6
Japanese Patent Application Laid-Open No. 8285 discloses an example in which the upper surface of the lower frame of the sash (running portion of the sliding shoji) is formed substantially flat. However, since it is intended to be airtight, tight materials are provided on both sides of the projecting piece. Is a constituent requirement. As a result, the opening and closing operation force of the shoji increases due to the resistance of the tight material on both sides, and the outside material is prevented from entering the lower frame recess by the tight material on both sides of the protruding piece, so that the pressure of the outside air and the lower frame Since the pressure difference in the concave part becomes large and it is difficult to stably seal over the entire length of the protruding piece in the longitudinal direction, rainwater flows intensively due to this pressure difference from a weakly sealed part and invades the indoor side. There were technical challenges.

[0004]

The present invention relates to a sliding door which slides on a lower frame surface of a sash composed of upper and lower and left and right vertical frames attached to an outdoor opening of a building. As shown in the construction image diagram of an outdoor barrier-free sash incorporating a high watertightness device according to the present invention, the upper surface of the sash lower frame is formed to be flat and excellent in drainage such as rainwater of a barrier-free type, and watertightness against indoor leakage is improved. It is an object of the present invention to provide a high watertightness device by a high drainage mechanism of an outdoor lower frame flat sash relating to a lower frame structure.

[0005]

SUMMARY OF THE INVENTION A sliding door which slides on and off a sash lower frame surface of an outdoor sash composed of upper and lower frames and left and right vertical frames via a door wheel has a lower frame outdoor drain port. At the top of the base member of the lower frame having a hollow cross-sectional shape, a drainage recess for an inner sash is provided with a first rising piece and a second rising piece, and a drainage hole for the inner stomach recess is provided at the bottom of the drainage recess for the inner sash. A horizontal tight material for an inner sash is disposed between a concave side wall of the first rising piece and an inner sash sliding piece hanging down from the inner side wall of the inner sash frame, which is disposed on the indoor side with respect to the second rising piece. The third rising piece and the fourth rising piece are provided with a drainage recess for a shoji, and the drainage recess for a shoji is disposed at the bottom of the drainage recess for a shoji. Of the third rising piece placed on the indoor side A horizontal tight material for a shoji is arranged between the side wall and the shoji sliding piece hanging from the inner shroud inner side wall, and the inner and outer drainage recesses for the inner shoji and the outer shroud drain are recessed. have a predetermined gap and shoji sliding piece and the groove wall, and drainage above the shoji recess and the outer sash drainage
The above-mentioned inner shoji in which the upper flat member for the shoji sliding provided with the inner shroud sliding groove and the outer shoji sliding groove narrower than the width of the recess in the indoor and outdoor directions is fitted to the base member of the lower frame, or in combination with the base member The upper surface flat member for the sliding door is fitted to the base member of the lower frame so as to form the sliding groove and the outer sliding groove.

[0006] With this structure, a horizontal tight member provided between the sliding piece hanging down from the side wall of the rising frame on the upper portion of the lower frame base member and the indoor side wall of the shoji lower frame against wind and rainwater blown from the outdoors. An airtight line is formed of the material, and a drainage recess provided therebelow acts as a pocket for storing rainwater. In more detail, if the upper surface of the sash lower frame is made a barrier-free type with a flat upper surface, rainwater easily accumulates between the shoji and the lower frame, especially in the case of rainwater with wind pressure, a pressure difference occurs between the outside and the room If only the airtight line formed by the horizontal tight material provided on the lower frame and the sliding piece of the lower frame of the shoji, the seal part becomes wet by the capillary phenomenon when the seal part becomes wet with rainwater, and the wind pressure from the outdoor side Rainwater is pushed out into the room and it is difficult to prevent rainwater from leaking into the room.However, a drainage recess is provided almost directly below this airtight line as a pocket to allow rainwater to flow in, and a drainage recess underneath. By providing the hollow portion, rainwater is not trapped in the seal portion, and the rainwater accumulates in the drainage concave portion so that a pressure difference between the outside and the inside of the room can be countered. A horizontal tight member is provided as a sealing means between the slide piece hanging down from the indoor side wall of the sliding door lower frame and the indoor side wall of the lower frame concave portion. There is no horizontal tight material between the side wall of the lower frame recess and
Since there is a slide groove aimed at drainage, this gap allows the sliding door to open and close smoothly, and when wind pressure is applied to the door surface from the outdoor side, the indoor side wall of this slide piece and the horizontal tight material are The seal is improved by being strongly pressed, and the gap K (see FIG. 2) between the slide piece and the slide groove wall on the outdoor side increases in proportion to the wind pressure. Flows. In the present invention, since the slide piece is provided on the inner side wall of the lower frame room, it operates as follows. Referring to FIG. 15 in the case where the shoji sliding piece is on the outdoor side and FIG. 16 in the case where the shoji sliding piece is on the indoor side, a glass holding packing 71 is provided between a glass member 70 and a shoji member such as a lower sliding door frame. The gap is sealed, but when a large wind pressure is applied to the door surface, the glass is strongly pressed to the indoor side, and there is a high possibility that the outdoor seal of the packing material part is weakened, and rainwater enters from this part Will come. The lower frame has a glass frontage drainage port 73, a lower frame lower drainage port 74, and a cutout portion of a door wheel mounting portion, and the like. As shown in FIG. Since it communicates with the indoor side, the pressure difference between the glass frontage and the room increases due to the wind pressure, and a large amount of rainwater infiltrates due to the pressure difference. On the other hand, when the slide piece is provided on the indoor side wall, the inside of the lower frame communicates with the outside air as shown in FIG. It works to prevent a large amount of water from flowing out from the lower drain port to the lower frame flat surface. 15 and 16 show the cross-sections of the outer sash and the inner sash, which are arranged side by side for convenience. However, when the actual sash and the inner sash are closed, the rainwater that has entered the frame of the lower frame from the glass seal surface is used. If the slide piece falls on the flat surface of the lower frame and the slide piece is provided outside the room, it will flow into the room as it is, but if the slide piece is provided on the indoor side wall, the pressure of the glass frontage approximates the outside air In addition, the slide piece provided on the indoor side wall acts to prevent rainwater from entering the room. In addition, even if the top flat member for the shoji slide is formed integrally for the inner shoji and the outer shoji,
Each of them may be formed separately, and the drainage recess may be provided on the side of the top sliding member for the sliding door, or may be formed in combination with the lower frame base member. Also, the hollow portion of the lower frame may be provided on the lower frame base member side, or may be formed integrally with the upper sliding flat member, but the upper flat flat member for sliding sliding door and the lower frame base member are separately formed. Then, the processing of the drain port and the like becomes easy.

[0007] Here, the drain recess and the drain hollow communicate with the outside air through the lower frame outdoor drain port, and a part of the upper surface of the lower frame is cut off in accordance with the position of the combining portion of the outer sash and the inner sash. It is desirable to provide a cut-out flat surface drain port, and to cut out a part of the upper surface of the lower frame in the corner portion of the sliding door frame and the vertical frame sash in the same manner as described above to provide a corner drain port. In addition, an airtight line made of a horizontal tight material arranged between a rising piece from the base member of the lower frame and a sliding door slide piece, and an airtight line made of a vertical tight material arranged between a vertical frame recess and a sliding door door frame. It is desirable that the sliding part of the sliding door slide downward from the lower part of the side wall of the lower frame of the sliding door after forming a bent part on the indoor side so that the butted part is formed on substantially the same surface and the airtightness of the corner part is ensured. . Further, a detachable sash is easily attached and detached, and a Kendon-type sash is attached to the sash frame such as the sash frame and the lower frame in order to ensure maintainability.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 17 shows a construction image of an outdoor barrier-free sash incorporating a high watertightness device according to the present invention, FIG. 19 shows an example of a floor plan of a reinforced concrete building house, and FIGS. 20 and 21 show cross sections of the outdoor opening. Show. Grating for drainage is installed outside the windows of the building house, a balcony is placed outside the window with a step adjustment block, and a safety fence such as a handrail is installed outside. A sash structure having a high watertight structure according to the present invention is employed at an entrance from a room to a balcony.

FIGS. 1 and 2 are longitudinal sectional views of the lower frame sash portion of the sash structure according to the present invention, and FIG. 3 is a transverse sectional view thereof.
As shown in FIGS. 1 and 21, a frame is formed by a sash of a lower frame 10 and an upper frame 40 attached to a frame by an anchor 8 and a sash of a left vertical frame 20 and a right vertical frame 30 as shown in FIG. 3. And
An outer sash 50 and an inner sash 60 are mounted on the inside from the outdoor side. The upper surface of the lower frame is formed substantially flat, and FIG.
As shown in FIG. 1, a barrier-free structure is provided in which the floor of the balcony, the floor of the balcony, and the floor of the balcony are arranged substantially horizontally via the upper surface of the lower frame and the grating.

As shown in FIGS. 1 and 3, the outer sash 50 is formed by a lower sash frame 51 and an upper sash frame 55, a sash sliding door frame 52, and a sash sliding frame 53. Glass 70 and the like are mounted. On the indoor side of the lower sash frame 51, a outer sash slide piece 51a is hung from a lower portion of the side wall of the lower sash frame with a bent portion provided on the indoor side. A sliding door 54 is attached to the lower frame recess 51b of the lower frame.
6 is rotated.

Similarly to the outer sash, the inner sash 60 forms a frame with a lower sash 61 and upper sill 65, a sash door contact frame 62 and a sash sliding frame 63, and a glass 70 and the like are formed inside. It is installed. On the indoor side of the inner sash lower frame 61, an inner sash sliding piece 61a is suspended from the lower part of the side wall of the lower sash frame with a bent portion provided on the indoor side. The door roller 64 is attached, and rotates on the upper surface of the upper sliding flat member 105 of the lower frame 10.

The lower frame 10 is provided with a drainage recess 12b for an inner sash in a lower frame base member 100 having a hollow sectional shape with a first rising piece 101 and a second rising piece 102 at an upper portion. Is provided with a recessed drainage port 17b for a shoji. Further, a horizontal flange 101a is provided on the upper part of the first rising piece 101, and the flat surface 11 on the upper surface of the lower frame is formed by the upper flat member 105 for sliding the inner sliding door and the upper flat member 106 for sliding the outer sliding door. ing. Lower frame base member 100
The upper and lower portions of the third rising piece 103 and the fourth rising piece 104 are provided with a drainage recess 12a for a sliding door, and a drainage recess 17a for a sliding door is provided at the bottom of the draining recess for a sliding door. A lower frame outdoor drainage port 18 is provided on the hollow side wall.
A backwind and backwater stop member 19 is pivotally mounted on the upper portion so as to cover the drain port. In addition, the arrangement of the entire drain outlet is shown in FIG.
And (c) is a perspective view of a corner portion. A part of the upper surface of the lower frame is cut out to provide a flat surface drainage port 15 (see FIG. 6) corresponding to the position of the combining part of the outer sash and the inner sash (see FIG. 6). A drainage port 16a and a right corner drainage port 16b are provided, and a lower frame recess drainage port 17a for outer shoji, a lower frame recess drainage port 17b for inner shoji, and a lower frame outdoor drainage port 18 are provided.

The pressure difference between the outside and the room due to wind pressure and the like also differs depending on the height of the building to which the sash is attached.
Although it is different for wooden and building, the drainage has a correlation with the size of the hollow part of the base member and the size of the concave drainage port. The depth H of the recess is selected. According to the wind tunnel experiment, H: 10 to 16 mm when the wind pressure is equivalent to 250 Pa, H: 17 to 21 mm when the wind pressure is equivalent to 350 Pa, and the wind pressure is 500 P
In the case of a, it became clear that H: 22 to 25 mm was required.

As shown in FIG. 2, an inner-shoji horizontal tight-material fitting groove 13b is provided on the concave side wall (inside of the room) of the first rising piece 101 provided above the base member of the lower frame. A horizontal tight member 14b is disposed, and the upper flat member 105 for sliding the inner frame of the lower frame is formed with the second rising piece 102 and the third rising piece on the upper portion of the base member of the lower frame so that the inner sliding screen groove 11b is formed. When the inner sash slides in the inner sash slide groove, the horizontal tight material for the sash slides against the inner sash slide piece 61a. The top flat member for sliding the inner sliding door is set so that the slide groove is narrower than the width of the drainage recess in the indoor and outdoor directions, and a predetermined gap K is generated between the slide piece and the groove wall. Also, a lateral tight material fitting groove 13a for a sash is provided on the concave side wall (inside of the room) of the third rising piece 103 provided above the base member of the lower frame, and a lateral tight material 14a for a sash is provided. , Upper flat member 10 for sliding sliding doors on the lower frame
6 is fitted to the fourth rising piece 104 and the fifth rising piece 107 on the upper portion of the base member of the lower frame so that the sliding frame 11a is formed. The lateral tight material for the outer sliding door slides on the outer sliding door slide piece 51a. The sliding flat on the top sliding member for the sliding door has a narrow sliding groove relative to the width of the drainage recess in the indoor and outdoor directions, and a predetermined gap K is provided between the sliding piece and the groove wall.
Is set to occur.

As shown in FIG. 3, a left vertical frame recess 21 is provided inside the left vertical frame 20 for receiving the door frame of the shoji.
A left vertical frame vertical tight material fitting groove 2 is formed in the left vertical frame recess indoor side wall.
2 and a left vertical frame vertical tight material 23 is provided. Inside the right vertical frame 30, similarly to the case of the outer sash, there is provided a right vertical frame recess 31 for receiving the door frame of the inner sash, and the right vertical frame vertical tight material is provided on the indoor side wall of the right vertical frame recess. A fitting groove 32 is provided,
A right vertical frame vertical tight member 33 is provided. Here, as shown in FIG. 4, the horizontal tight material and the vertical tight material are disposed so as to be flush with each other in the outer sash and the inner sash.

In the summing section, the outer butt sliding pieces 53a and inner butt sliding pieces 63a provided on the outer sliding doors 53 of the outer sliding door 50 and the inner sliding doors 63 of the inner sliding door 60 are provided.
Abuts when the shoji is closed, a water barrier 67 is attached in the sliding direction of the sumo shoji frame, and a summing frame tight material 66 is attached to the summing frame tight material fitting groove 63b provided in the inner shoji combining section. It is in sliding contact with the shoji side. In addition,
This summing frame tight material may be provided on the side of the outer sash.

The outdoor barrier-free sash incorporating the high-watertightness device according to the present invention moves the sliding door upward along the rail of the upper frame and inserts the sliding piece of the sliding door into the sliding groove as shown in FIG. It can be easily attached to the sash frame, and can be easily removed in a short time by the reverse operation, so that maintenance is easy. In addition, the shoji is easily removed during cleaning, and the structure is not complicated, so that the quality is stable and the number of failures is small.

In the lower frame drainage mechanism of the present invention, as shown in FIG. 8, an aluminum alloy extruded member integrally formed with first to fifth rising pieces and an upper flat member is fitted to a base member 100. As shown in FIG. 9, a hollow portion may be formed by fitting a shape member integrally formed with a rising piece and an upper flat member to a base member, and further as shown in FIG. Alternatively, these may be integrally formed with one shape member. If the upper flat member and the lower frame base member are formed separately, the flat surface drain port 1
5. Recessed drainage port 17a for outer shoji, Recessed drainage port 1 for inner shoji
Processing of 7b and the like becomes easy.

Further, in the present invention, the mounting position of the tight material is not necessarily limited to the drainage recess and the vertical frame. FIG. Shown in In addition, a lateral tight material may be provided on the sliding piece of the shoji only for either the outer shoji or the inner shoji. As an example, FIG. 13 is a longitudinal sectional view, and FIG. 14 is a transverse sectional view.

[0020]

FIG. 17 shows an example in which an outdoor barrier-free sash incorporating a high watertightness device according to the present invention is applied to an outdoor opening of a building, and FIG. 18 of a conventional example ensures watertightness. Because the upper surface of the lower frame of the sash could be formed flat, the boundary between the veranda of the apartment or the like and the indoor side was eliminated, and the living space could be integrally extended from the room to the outdoor such as the veranda. Specifically, the lower frame has a flat surface in which two grooves are formed on the upper surface of the lower frame, which are substantially equivalent to the thickness of the sliding piece of the sliding screen of the lower frame.

The present invention is a barrier-free type in which the upper surface of a sash lower frame is formed flat, and when a sliding shoji is provided at an outdoor opening of a building, the slide is suspended from the inner side wall of the lower frame of the shoji. An airtight line is formed with a horizontal tight material provided between the piece and the recess side wall of the lower frame, a drainage recess is provided almost directly below the drainage recess, and a drainage hollow portion is further provided thereunder. By appropriately setting the gap between the outside of one room and the slide groove wall, even if rainwater is blown on this shoji so that a pressure difference between the outside and the room is generated by wind pressure etc., the rainwater flows into the lower frame together with the outside air,
The pressure inside the lower frame approaches the outside air, so that excellent airtightness and watertightness as well as good drainage properties are obtained, and water leakage into the room can be prevented.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a flat, highly watertight sash structure according to the present invention.

FIG. 2 is a longitudinal sectional view showing the vicinity of a lower frame of a high watertight sash structure having a lower frame flat.

FIG. 3 is a cross-sectional view of a lower frame flat high watertight sash structure according to the present invention.

FIG. 4 is a partial perspective view showing a state where a horizontal tight material and a vertical tight material are attached.

FIG. 5 shows an arrangement diagram of a drain port.

FIG. 6 is a sectional view taken along line aa of FIG. 5;

FIG. 7 shows a method of attaching and detaching a shoji.

FIG. 8 shows another structural sectional view of the lower frame.

FIG. 9 shows another structural sectional view of the lower frame.

FIG. 10 shows another structural sectional view of the lower frame.

FIG. 11 is a longitudinal sectional view of an example in which a tight material is provided on the side of a shoji.

FIG. 12 shows a transverse sectional view in the case of FIG.

FIG. 13 shows an example in which a horizontal tight material is provided on the inner and outer shoji sliding pieces.

FIG. 14 shows a cross-sectional view in the case of FIG.

FIG. 15 is a schematic diagram showing the flow of rainwater when the lower frame slide piece is outside the room.

FIG. 16 is a schematic diagram showing the flow of rainwater when the lower frame slide piece is on the indoor side.

FIG. 17 shows a construction image diagram of an outdoor barrier-free sash incorporating a high watertightness device according to the present invention.

FIG. 18 is a construction image diagram of a condominium using a conventional sash, viewed from the veranda side and the indoor side.

FIG. 19 shows an example of a floor plan.

FIG. 20 shows an outdoor opening longitudinal sectional view.

FIG. 21 is a longitudinal sectional view of an outdoor opening drainage mechanism.

[Explanation of symbols]

Reference Signs List 8 anchor 10 lower frame 11 flat surface (upper surface) 11a outer sliding door sliding groove 11b inner sliding door sliding groove 12a draining recess for external sliding door 12b draining concave opening for internal sliding door 13a horizontal tight material fitting groove for external sliding door 13b horizontal tight material for internal sliding door Fitting groove 14a Horizontal tight material for outer sash 14b Horizontal tight material for inner sash 15 Flat surface drain 16a Left corner drain 16b Right corner drain 17a Recess drain for outer sash 17b Recess drain for inner sash 18 Lower Frame outdoor drainage port 19 Backwind, backwater stop member 100 Base member 101 First rising piece 102 Second rising piece 101a flange 103 Third rising piece 104 Fourth rising piece 105 Top flat member for inner sash sliding 106 Upper flat for sash sliding Member 107 Fifth rising piece 20 Left vertical frame 30 Right vertical 21 Left vertical frame recess 31 Right vertical frame recess 22 Left vertical frame vertical tight material fitting groove 32 Right vertical frame vertical tight material fitting groove 23 Left vertical frame vertical tight material 33 Right vertical frame vertical tight material 50 Outer sliding door 60 Inner sliding door 51 Outer sliding door lower frame 61 Inner sliding door lower frame 51a Outer sliding door sliding piece 61a Inner sliding door sliding piece 51b Outer sliding door lower frame recessed section 61b Inner sliding door lower frame recessed section 52 Outer sliding door door frame 62 Inner sliding door door frame 53 63 Inner sliding door summing frame 53a Outer sliding door butting piece 63a Inner sliding door butting piece 54 Outer sliding door wheel 64 Inner sliding door door 55 Outer sliding door upper frame 65 Inner sliding door upper frame 66 Summing frame tight material 67 Water barrier 70 Glass 71 Glass holding packing 72 Glass Frontage 73 Glass frontage drainage port 74 Lower drainage port at lower part of lower frame 151 Outer sliding door lower frame 151a provided with a sliding piece on the outdoor side 151a Outer sliding door outside sliding door 161 The gap between the lower sash inner provided with a slide piece on the outer rail 161a in shoji chamber outer slide piece K slide piece chamber outside the sliding groove wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E06B ^7/ 14-7/26

Claims (1)

(57) [Claims] 1. A sliding door that slides on and off a sash lower frame surface of an outdoor sash composed of upper and lower frames and left and right vertical frames via a door wheel, has a hollow cross-sectional shape having a lower frame outdoor drainage port. The upper part of the base member of the lower frame is provided with a drainage recess for the inner pallet with the first rising piece and the second rising piece, and a drainage hole for the inner pallet is disposed at the bottom of the drainage recess for the inner pallet. A horizontal tight material for an inner sash is provided between a concave side wall of the first rising piece and an inner sash sliding piece hanging down from the inner side wall of the inner sash lower frame located on the indoor side with respect to the second rising piece. The third rising piece and the fourth rising piece are provided with a drainage recess for a sash, and the drainage recess for a sash is provided at the bottom of the drainage recess for a sash, and disposed on the indoor side with respect to the fourth rising piece. Side wall and trauma of the raised third rising piece A horizontal tight material for a sliding door is arranged between sliding sliding doors sliding down from the side wall inside the lower frame room, and the inner sliding sliding piece and the outer sliding sliding groove are located above the drain recess for the inner sliding door and the drain recess for the outer sliding door. have a predetermined gap bets and on
Inside and outside of the drainage recess for inner shoji and drainage recess for outer shoji
An upper flat member for a sliding door having a sliding sliding groove and a sliding sliding groove which is narrower than a width thereof is fitted to a base member of a lower frame, or in combination with a base member, the sliding sliding groove and the sliding shroud. A high watertightness device for an outdoor lower frame flat sash, wherein an upper surface flat member for a sliding door is fitted to a base member of a lower frame so as to form a slide groove.