JP5968618B2 - Building opening structure - Google Patents

Description

  The present invention relates to an opening structure of a building.

The thing of patent document 1 and 2 is known as an example of the opening part structure of a building.
In the opening structure described in Patent Literature 1, an opening frame made of steel is fixed in the opening of the wall. A waterproof material is interposed between the inner periphery of the opening frame and the outer periphery of the outer wall panel provided in the opening frame. In addition, the lower frame material of the opening frame is hooked on a fixing plate disposed on the floor surface via an embedded bolt, and by filling waterproof mortar between the floor surface and the lower frame material, It is fixed to the floor.
Moreover, the opening part structure described in patent document 2 has the water which goes to the upper frame material of the sash attached to the opening part of a building outer wall through the ventilation layer by the ventilation layer formation member provided in the back side of the outer wall material. The sash-circulating drainage structure prevents the water from leaking indoors through the periphery of the sash by eliminating it downward without reaching the upper frame member.

JP 2011-184986 A JP 2006-342586 A

However, the two conventional examples of the opening structure of the building have not been devised for drainage in consideration of water leakage under the sash frame (opening frame).
Also, in the latter conventional building opening structure, the exterior material and the sealing are in close contact, so in order to confirm the presence or absence of water leakage under the sash frame (opening frame), after removing the sealing, It is necessary to remove the material, which is troublesome and expensive.

  The present invention has been made in view of the above circumstances, and it is possible to drain water under the opening frame such as a sash frame and water such as condensed water to the outside and easily check the presence or absence of water leakage under the opening frame. It is an object to provide an opening structure of a building.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that, as shown in FIGS. 1 and 2, for example, an opening frame 2 is attached to an opening 1 formed in a wall 10 of a building housing, and the wall In the opening structure of the building provided so that the exterior material 3 is disposed on the outer surface of the opening frame 2 on the surface of 10,
A rectangular frame-shaped peripheral edge 5 is provided on the outer peripheral side of the opening frame 2,
A first piece 11 attached to the surface of the wall 10 below the opening frame 2 and a second piece 12 detachably attached to the first piece 11. With
The first piece 11 has a drainage part 15 for draining water such as water leakage or dew condensation water under the opening frame to the outside, and a fixing part 11a fixed to the wall 10 below the opening frame 2, A projecting portion 11b that is formed so as to project from the fixed portion 11a and that has a drainage channel 13 that opens to the outside at a position outside the exterior material 3 inside.
The drainage portion 15 includes the drainage channel 13 and a drainage hole 11f that is formed in the upper wall portion 11c of the protruding portion 11b and communicates with the drainage channel 13.
The second piece 12 includes a cover portion 12b that covers an upper end portion of the exterior material 3 below the opening frame 2.

According to the first aspect of the present invention, the lower part 8 of the peripheral edge 5 provided on the outer peripheral side of the opening frame 2 has the first piece 11 attached to the surface of the lower wall 10 of the opening frame 2. The second piece 12 is detachably attached to the first piece 11, and the first piece 11 has a drainage unit 15 for draining water such as water leakage or condensed water below the opening frame to the outside. Therefore, water such as water leakage or dew condensation water under the opening frame can be easily drained to the outside.
Moreover, since the 2nd piece 12 is attached to the 1st piece 11 so that attachment or detachment is possible, by removing this 2nd piece 12, the upper end part of the exterior material 3a (3d) below the opening frame 2 is exposed. Therefore, the exterior material 3a (3d) can be easily removed and the presence or absence of water leakage under the opening frame can be easily confirmed.
Further, water such as leakage water or dew condensation water under the opening frame flows into the drain hole 11f from the upper wall portion 11c of the protruding portion 11b, and further flows through the drainage channel 13 and is discharged to the outside at a position outside the exterior material 3. Therefore, the water can be easily and reliably drained to the outside.
Moreover, since the 1st piece 11 can be reliably fixed to the wall 10 by the fixing | fixed part 11a, the lower side part 8 of the surrounding edge 5 which has the 1st piece 11 and the 2nd piece 12 can be easily positioned and fixed to a predetermined position. .

The invention according to claim 2 is the opening structure of the building according to claim 1,
A sealing material 16 is provided in close contact with both the opening frame 2 and the first piece 11 between the opening frame 2 and the first piece 11.

  According to the invention described in claim 2, since the sealing material 16 is provided in close contact with both the opening frame 2 and the first piece 11, rainwater from between the opening frame 2 and the first piece 11 is provided. Since the second piece 12 can be removed without removing the sealing material 16, the exterior material 3a (3d) on the lower side of the opening frame 2 can be easily removed and opened. The presence or absence of water leakage under the frame can be easily confirmed.

The invention according to claim 3 is the opening structure of the building according to claim 1 or 2 ,
The second piece 12 is inserted between the upper and lower wall portions 11c and 11d of the drainage channel 13 so as to be detachable with a predetermined gap from the wall portions 11c and 11d.

According to the third aspect of the invention, since the second piece 12 is removably inserted between the upper and lower wall portions 11c, 11d of the drainage channel 13, the second piece 12 can be easily inserted into the first piece 11. Can be removed from.
Moreover, since the 2nd piece 12 is inserted with the upper and lower wall parts 11c and 11d of the drainage channel 13 with a predetermined clearance, water flows smoothly through the drainage channel 13 and is discharged outside.

Invention of Claim 4 in the opening part structure of the building as described in any one of Claims 1-3 ,
A waterproof reinforcement member 20 is provided at the upper end of the fixing portion 11a to prevent water such as water leakage or dew condensation from flowing into the wall 10 below the opening frame 2.

According to the invention described in claim 4 , since the waterproof reinforcing material 20 is provided at the upper end portion of the fixing portion 11 a fixed to the lower wall 10 of the opening frame 2, water such as water leakage or dew condensation water can flow. It is possible to prevent wrapping around the wall 10.

Invention of Claim 5 is the opening part structure of the building of Claim 4 ,
The waterproof reinforcement member 20 adheres the water stop plate 21 provided at the upper end portion of the wall 10 below the opening frame 2 and the end portion of the water stop plate 21 to the upper end portion of the fixing portion 11a. And a waterproof tape 22.

According to the fifth aspect of the present invention, the end portion of the water stop plate 21 provided at the upper end portion of the wall 10 is bonded to the upper end portion of the fixing portion 11a by the waterproof tape 22, so Intrusion of water from between the end portion and the upper end portion of the fixed portion 11a can be reliably prevented.

The invention according to claim 6 is the opening structure of the building according to claim 4 , for example, as shown in FIG.
The waterproof reinforcement member 20 is constituted by a water-stop sheet 23 bonded to the upper end portion of the fixed portion 11a and the upper end portion of the lower wall 10 of the opening frame 2.

According to the sixth aspect of the present invention, since the waterproof sheet is adhered to the upper end portion of the fixing portion 11a and the upper end portion of the wall 10, the gap between the upper end portion of the fixing portion and the upper end portion of the wall Water intrusion can be surely prevented.

The invention according to claim 7 is the opening structure of the building according to claim 5 or 6 ,
At least a part of the waterproof reinforcement member 20 is provided in a gap between the opening frame 2 and the lower side 8 of the peripheral edge 5.

According to the seventh aspect of the present invention, since at least a part of the waterproof reinforcement member 20 is provided in the gap between the opening frame 2 and the lower side portion 8 of the peripheral edge 5, it is ensured that water enters from the gap. Can be prevented.

The invention according to claim 8 is the opening structure of the building according to any one of claims 1 to 7 as shown in FIGS. 1, 4, and 5, for example.
A plurality of the exterior materials 3 are juxtaposed on the outer peripheral side of the opening frame 2,
Among the plurality of exterior materials 3, at least the exterior material 3a (3d) on the lower side of the opening frame 2 is detachably attached to the building frame by screws 25.

According to the invention described in claim 8 , at least the lower exterior material 3 a (3 d) on the lower side of the opening frame 2 is detachably attached to the building frame by the screws 25, so after removing the second piece 12, By loosening and removing the screws 25, the outer packaging material 3a (3d) on the lower side of the opening frame 2 can be easily removed, and as a result, the presence or absence of water leakage under the opening frame can be easily confirmed.

According to the present invention, the first piece on the lower side of the peripheral edge provided on the outer peripheral side of the opening frame has a drainage part for draining water such as water leakage or dew condensation water under the opening frame to the outside. Water such as water leakage or dew condensation water under the opening frame can be easily drained to the outside.
Moreover, since the 2nd piece is attached to the 1st piece so that attachment or detachment is possible, the edge part of the exterior material of the lower side of an opening frame can be exposed by removing this 2nd piece. Can be easily removed, and the presence or absence of water leakage under the opening frame can be easily confirmed.

An example of the opening part structure of the building which concerns on this invention is shown, and it is the front view. It is a sectional side view which shows an example of the opening part structure under an opening frame equally. It is a sectional side view which shows the other example of the opening part structure under an opening frame equally. It is a plane sectional view showing an example of the attachment structure of the exterior material under the opening frame. It is a plane sectional view showing other examples of the attachment structure of the exterior material under the opening frame.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a building opening structure according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an opening structure of a building according to the present embodiment. In FIG. 1, reference numeral 1 indicates an opening formed on the wall of a building frame.
The opening 1 is formed in a rectangular shape when viewed from the front, and a sash frame (opening frame) 2 is attached to the inner peripheral edge thereof. The sash frame 2 is formed by assembling upper and lower frame members 2a and 2b and left and right frame members 2c and 2c into a rectangular frame shape.
The wall of the building frame is a wall on the outside surface of the building, and a plurality of exterior materials 3 are attached to the surface of the wall so as to be disposed outside the sash frame 2. The exterior material 3 is attached to the wall via a trunk edge 4 (see FIG. 4), and a predetermined gap is formed between the exterior material 3 and the wall by the trunk edge 4.

On the outer peripheral side of the sash frame 2, a peripheral edge 5 is provided with a predetermined gap from the sash frame 2. The peripheral edge 5 has a rectangular frame shape, and is formed by assembling the upper side portion 6, the left and right side portions 7, 7, and the lower side portion 8 into a rectangular frame shape. These upper side portion 6, side side portions 7, 7 and lower side portion 8 have substantially the same cross-sectional shape.
As shown in FIG. 2, the lower side portion 8 includes a first piece 11 attached to the surface of the wall 10 of the building frame, and a second piece 12 detachably attached to the first piece 11. . The wall 10 is constituted by a wooden wall panel. This wall panel is configured by attaching a face material 10b made of plywood or the like to both surfaces of a frame body made by assembling the frame material 10a into a rectangular frame shape, and reinforcing bars are vertically and horizontally disposed inside the frame body as necessary. It is assembled to.

The first piece 11 is formed of sheet metal or the like, and is long in the longitudinal direction of the lower frame member 2b of the sash frame 2 (direction perpendicular to the paper surface in FIG. 2). The first piece 11 is formed with a fixed portion 11 a fixed to the lower wall 10 of the sash frame 2, and protrudes from the fixed portion 11 a, and opens to the outside at a position outside the exterior material 3. And a protruding portion 11b provided with a drainage channel 13 to be provided.
The fixing portion 11a is formed in a plate shape, and is fixed to the surface of the upper end portion of the wall 10 so that the upper end portion thereof is at a height position substantially equal to the lower surface of the lower frame member 2b of the sash frame 2. . A waterproof / moisture permeable sheet 14 is interposed between the surface of the wall 10 and the fixing portion 11a, and the fixing portion 11a is fixed to the upper end surface of the wall 10 with the waterproof / moisture permeable sheet 14 interposed therebetween. .

The projecting portion 11b is composed of two upper and lower wall portions 11c and 11d projecting from the upper end portion of the fixed portion 11a to the outside substantially at right angles to the fixed portion 11a. These upper wall part 11c and lower wall part 11d are arranged in parallel at a predetermined interval, and a drainage channel 13 is formed between these upper and lower wall parts 11c, 11d.
Moreover, the front-end | tip part of the upper and lower wall parts 11c and 11d protrudes outside from the surface of the exterior | packing material 3 located under the sash frame 2, and the drainer 11e extended below is provided at the front-end | tip of the lower wall part 11d. Is formed. The drainer 11e is in contact with the upper end surface of the exterior material 3, or is disposed with a slight gap between the upper end surface.
In this way, the drainage channel 13 is provided inside the protruding portion 11 b, and this drainage channel 13 opens to the outside at a position outside the exterior material 3.

Further, a drain hole 11f is formed in the base end portion (the right end portion in FIG. 2) of the upper wall portion 11c of the protruding portion 11b. A plurality of drain holes 11f are formed at predetermined intervals in the longitudinal direction of the upper wall portion 11c (the direction orthogonal to the paper surface in FIG. 2), and these drain holes 11f communicate with the drain path 13.
Further, the lower frame member 2b of the sash frame 2 has a drainer 2d whose tip projects outward from the surface of the exterior member 3, and between the drainer 2d and the upper wall portion 11c of the first piece 11. A sealing material 16 is provided in close contact with both the drainer 2d and the upper wall portion 11c. In addition, the sealing material 16 is in close contact with the upper wall portion 11c at the tip position from the drain hole 11f formed in the upper wall portion 11c.
And the drainage part 15 is comprised by the said drain hole 11f and the drainage channel 13, and water, such as the water leakage from the lower frame material 2b and the sealing material 16 of the sash frame 2, and dew condensation water, is drained outside by this drainage part 15. It is like that.

The second piece 12 is formed of sheet metal or the like, and is long in the longitudinal direction of the lower frame member 2b of the sash frame 2 (direction perpendicular to the paper surface in FIG. 2). Moreover, the 2nd piece 12 is formed in the cross-sectional L-shape, The one piece part 12a is arrange | positioned horizontally, and the other piece part 12b is arrange | positioned vertically.
Overhang portions 12c and 12c are formed on the one piece portion 12a so as to project vertically. The overhang portions 12c, 12c are formed by making a plurality of cuts in parallel at predetermined intervals in the longitudinal direction (direction orthogonal to the paper surface in FIG. 2) in one piece portion 12a, and alternately projecting up and down between adjacent cuts. It is formed.
And the one piece part 12a is inserted in the drainage channel 13 between the upper and lower wall parts 11c and 11d from the front-end | tip opening of the upper and lower wall parts 11c and 11d so that attachment or detachment is possible. In this state, the upper and lower projecting portions 12 c and 12 d are in contact with the upper and lower wall portions 11 c and 11 c, whereby the one piece portion 12 a is interposed between the upper and lower wall portions 11 c and 11 d of the drainage channel 13. The parts 11c and 11d are inserted in a removable manner with a predetermined gap.
Further, the other piece portion 12 b arranged vertically is a cover portion 12 b that covers the upper end portion of the exterior material 3 positioned below the sash frame 2.

A recess is formed in the lower surface of the lower frame member 2b of the sash frame 2. The upper end of the wall 10 is inserted into the recess, and the lower frame member 2b is fixed to the upper end of the wall 10 with screws. .
In addition, a waterproof reinforcement member 20 is provided at the upper end of the fixed portion 11 a of the first piece 11 to prevent water such as water leakage or dew condensation from flowing into the wall 10.
That is, the waterproof reinforcement member 20 includes a water stop plate 21 provided at the upper end portion of the lower wall 10 of the sash frame 2 and a waterproof tape for bonding the end portion of the water stop plate 21 to the upper end portion of the fixing portion 11a. 22. The water stop plate 21 is formed of a metal plate, a resin plate, or the like, and is suspended from the horizontal plate 21a that is in contact with the upper end surface of the wall 10 and covers the upper end surface, and the end of the horizontal plate 21a. The lower end of the vertical plate 21b protrudes downward from the lower frame member 2b.
The upper end portion of the fixing portion 11a is located inside the lower end portion of the vertical plate 21b (on the wall panel 10 side), and the lower end portion of the vertical plate 21b is bonded to the upper end portion of the fixing portion 11a by the waterproof tape 22. ing.
Further, at least a part of the waterproof reinforcement member 20, that is, the lower end portion of the vertical plate 21b of the water stop plate 21 and the waterproof tape 22 are the lower frame member 2b of the sash frame 2 and the upper wall 8 of the lower edge 8 of the peripheral edge 5. It is provided in the gap with the part 11c.

In addition, although the waterproof reinforcement material 20 is comprised by the said water stop plate 21 and the waterproof tape 22, you may employ | adopt a structure other than this.
For example, as shown in FIG. 3, the waterproof reinforcement member 20 is constituted by a water-stop sheet 23 bonded to the upper end portion of the fixed portion 11 a and the upper end portion of the wall 10 positioned below the sash frame 2. Also good. The water-stop sheet 23 is a sheet-like sheet formed of, for example, EPDM (ethylene propylene rubber), and is in close contact with the upper end portion of the fixing portion 11a and the upper end portion surface of the wall 10 in a watertight manner.

As shown in FIG. 1, the peripheral edge 5 is provided on the outer peripheral side of the sash frame 2 so as to surround the sash frame 2. As described above, the peripheral edge 5 is formed by assembling the upper side portion 6, the left and right side portions 7 and 7, and the lower side portion 8 into a rectangular frame shape, and these upper side portion 6, side side portions 7 and 7, lower side The part 8 has substantially the same cross-sectional shape.
The upper side portion 6 basically has a configuration in which the lower side portion 8 is turned upside down, and thus description of each component of the upper side portion 6 is omitted. However, in the lower side portion 8, a drain hole 11f is formed in the upper wall portion 11c. However, in the upper side portion 6, the wall portion which is the upper wall portion 11c in the lower side portion 8 is located on the lower side, and the lower side portion 8 is located on the upper side, the drain hole 11f is formed in the upper wall part, and the drain hole 11f is formed in the lower wall part. There is no difference from the lower side 8.
Further, the side portion 7 basically has a configuration in which the lower side portion 8 is rotated by 90 degrees, and thus description of each component of the side portion 7 is omitted. However, although the drain hole 11f is formed in the upper wall portion 11c in the lower side portion 8, the side portion 7 is different from the lower side portion 8 in that such a drain hole 11f is not formed in the wall portion.

As described above, a plurality of exterior materials 3 are arranged in parallel on the outer peripheral side of the sash frame 2, and among these exterior materials 3, the exterior materials 3 a and 3 a located on the lower left and right sides of the sash frame 2 are screws. 25 detachably attached to the building frame.
For example, as shown in FIG. 4, the exterior material 3 a located on the lower left and right sides of the sash frame 2 has flange portions 3 b and 3 b at both end portions thereof. The flange portions 3b and 3b are formed on the back side of the exterior material 3a, and therefore, a concave groove 26 is formed between the adjacent exterior materials 3.
The collar portion 3b of the exterior material 3a is brought into contact with the trunk edge 4 attached to the wall 10 of the building casing through the waterproof tape 27, and the screw 25 is screwed into the trunk edge 4 through the collar portion 3b. Is attached to the trunk edge 4.
On the other hand, the side end portion of the exterior material 3 adjacent to the exterior material 3 a is in contact with the body edge 4 via the water-stopping tape 27 and is fixed to the body edge 4 by the adhesive 29.
Further, a dry-type fixed joint 28 is inserted into the concave groove 26, thereby constituting primary waterproofing.

  The exterior material 3a can be easily removed from the body edge 4 of the building frame by removing the fixed joint 28 from the concave groove 26 and then loosening and removing the screws 25. As a result, water leakage under the sash frame The presence or absence of can be easily confirmed.

Further, as another configuration in which the exterior materials 3a, 3a located on the lower left and right sides of the sash frame 2 are detachably attached to the building frame with screws 25, for example, as shown in FIG. The upper solid portions 3d and 3d may be formed at both end portions of the outer packaging material 3c positioned, while the lower solid portions 3e may be formed at the side end portions of the outer packaging material 3 adjacent to the outer packaging material 3c.
The exterior material 3c is attached to the body edge 4 by abutting the side end of the exterior material 3c on the body edge 4 via the waterproof tape 27 and screwing the screw 25 into the body edge 4 through the exterior material 3c. Yes.
Further, the side edge of the exterior material 3 adjacent to the exterior material 3 c is brought into contact with the body edge 4 via the water-stopping tape 27, and is fixed to the body edge 4 by the adhesive 29. The upper solid part 3d of the exterior material 3c is overlapped on the lower solid part 3e, and the sealing material 30 is provided between the lower solid part 3e and the upper solid part 3d.

  And the exterior material 3c can be easily removed from the trunk edge 4 of the building frame by loosening and removing the screws 25, and as a result, the presence or absence of water leakage under the sash frame can be easily confirmed.

According to the present embodiment, the lower piece 8 of the peripheral edge 5 provided on the outer peripheral side of the sash frame 2 is attached to the surface of the lower wall 10 of the sash frame 2, and the first piece 11 is attached to the first piece 11. Since the first piece 11 has a drainage part 15 for draining water such as water leakage or condensed water under the sash frame to the outside, the second piece 12 is detachably attached to the one piece 11. Water such as water leakage and dew condensation water under the sash frame can be easily drained to the outside.
Moreover, since the 2nd piece 12 is attached to the 1st piece 11 so that attachment or detachment is possible, by removing this 2nd piece 11, the upper end part of the exterior material 3a located in the lower side of the sash frame 2 is exposed. Therefore, the exterior material 3a can be easily removed and the presence or absence of water leakage under the sash frame can be easily confirmed.

Further, since the sealing material 16 is provided in close contact with both the sash frame 2 and the upper wall portion 11c of the first piece 11, water such as rain water from between the sash frame 2 and the first piece 11 is used. Intrusion can be prevented and the second piece 12 can be removed without removing the sealing material 16, so the exterior material 3a located on the lower side of the sash frame can be easily removed to check for leakage under the sash frame. Can be easily confirmed.
Further, water such as water leakage or dew condensation water from the lower frame member 2b of the sash frame 2 flows into the drainage hole 11f from the upper wall portion 11c of the protruding portion 11b, and further flows through the drainage channel 13 to the outside of the exterior material 3. Since the water is discharged to the outside at the position, the water can be easily and reliably drained to the outside.
Moreover, since the 1st piece 11 can be reliably fixed to the wall 10 by the fixing | fixed part 11a, the lower side part 8 of the surrounding edge 5 which has the 1st piece 11 and the 2nd piece 12 can be positioned and fixed easily to a predetermined position.

In addition, since the second piece 12 is removably inserted between the upper and lower walls 11c and 11d of the drainage channel 13, the second piece 12 can be easily detached from the first piece 11.
Moreover, since the 2nd piece 12 is inserted with the upper and lower wall parts 11c and 11d of the drainage channel 13 with a predetermined clearance, water flows smoothly through the drainage channel 13 and is discharged outside.
Moreover, since the waterproof reinforcement material 20 is provided in the upper end part of the fixing | fixed part 11a fixed to the wall 10 of the lower side of the sash frame 2, it can prevent that water, such as water leakage and dew condensation water, wrap around to the wall 10. FIG.
Further, since the end portion of the water stop plate 21 provided on the lower wall 10 of the sash frame 2 is bonded to the upper end portion of the fixing portion 11a by the waterproof tape 22, the end portion of the water stop plate 21 and the fixing portion are fixed. It is possible to reliably prevent water from entering between the upper end of 11a.
Moreover, since the water-stop sheet | seat 23 is adhere | attached on the upper end part of the fixing | fixed part 11a, and the upper end part of the wall 10, the penetration | invasion of the water from between the upper end part of a fixing | fixed part and the upper end part of the wall 10 is prevented reliably. it can.
Further, at least a part of the waterproof reinforcement member 20, that is, the lower end portion of the vertical plate 21b of the water stop plate 21 and the waterproof tape 22 are the lower frame member 2b of the sash frame 2 and the upper wall 8 of the lower edge 8 of the peripheral edge 5. Since it is provided in the gap with the portion 11c, water can be reliably prevented from entering through this gap.
Moreover, since the exterior materials 3a and 3c located on the lower side of the sash frame 2 are detachably attached to the trunk edge 4 by screws 25, after the second piece 12 is removed, the screws 25 are loosened and removed. The exterior materials 3a and 3c located on the lower side of the sash frame 2 can be easily removed, and as a result, the presence or absence of water leakage under the sash frame can be easily confirmed.

  In this embodiment, a wooden wall panel has been described as an example of a wall of a building frame, but the wall of the building frame is not limited to a wall panel, for example, a wall provided between pillars of a shaft assembly, Other walls may be used.

1 Opening 2 Sash frame (opening frame)
3, 3a, 3d Exterior material 5 Around edge 8 Lower side portion 10 Wall 11 First piece 11a Fixing portion 11b Protruding portion 11c Upper wall portion 11d Lower wall portion 11f Drain hole 12 Second piece 12a One piece portion 12b Other piece portion (cover portion) )
DESCRIPTION OF SYMBOLS 13 Drainage path 15 Drainage part 16 Sealing material 20 Waterproof reinforcement member 21 Water stop plate 22 Waterproof tape 23 Water stop sheet 25 Screw

Claims (8)

In the opening structure of the building provided such that the opening frame is attached to the opening formed in the wall of the building frame, and the exterior material is disposed on the outside of the opening frame on the surface of the wall.
A rectangular frame-shaped peripheral edge is provided on the outer peripheral side of the opening frame,
The lower side portion of the peripheral edge includes a first piece attached to the surface of the wall on the lower side of the opening frame, and a second piece detachably attached to the first piece,
The first piece has a drainage part for draining water such as leakage water or dew condensation water below the opening frame to the outside, a fixing part fixed to the wall below the opening frame, and a protrusion protruding from the fixing part. And a protruding portion provided with a drainage channel that opens to the outside at a position outside the exterior material.
The drainage portion has the drainage channel and a drainage hole formed in the upper wall portion of the protruding portion and communicating with the drainage channel,
The opening structure of a building, wherein the second piece has a cover portion that covers an upper end portion of the exterior material on the lower side of the opening frame. In the opening part structure of the building of Claim 1,
A building opening structure characterized in that a sealing material is provided in close contact with both the opening frame and the first piece between the opening frame and the first piece. In the building opening structure according to claim 1 or 2 ,
The opening structure of a building, wherein the second piece is inserted between the upper and lower wall portions of the drainage channel so as to be detachable with a predetermined gap from the wall portion. In the opening part structure of the building as described in any one of Claims 1-3 ,
An opening structure of a building, wherein a waterproof reinforcing material is provided at an upper end portion of the fixing portion to prevent water such as water leakage or dew condensation from flowing into the wall below the opening frame. In the opening structure of the building of Claim 4 ,
The waterproof reinforcement is a water stop plate provided at an upper end portion of the wall below the opening frame,
A building opening structure comprising a waterproof tape for adhering an end portion of the water stop plate to an upper end portion of the fixed portion. In the opening structure of the building of Claim 4 ,
The opening structure of a building, wherein the waterproof reinforcing material is constituted by a waterproof sheet adhered to an upper end portion of the fixed portion and an upper end portion of the wall below the opening frame. In the building opening structure according to claim 5 or 6 ,
At least a part of the waterproof reinforcing material is provided in a gap between the opening frame and a lower side portion of the surrounding edge. In opening the building structure according to any one of claims 1 to 7
A plurality of the exterior materials are arranged in parallel on the outer peripheral side of the opening frame,
Of the plurality of exterior materials, at least the exterior material on the lower side of the opening frame is removably attached to the building frame with screws.

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