Water shielding device of sill throating

Abstract

To provide a water shielding device of a sill throating that improves maintainability by facilitating replacement of a water-absorbing expansion material or a cover member itself.SOLUTION: A water shielding device A of a sill throating having an air vent making an underfloor space of a building 100 communicate with the outside air comprises: a main body 11 in which the air vent is formed; and a cover member 12 attached and detached freely to the main body. The cover member includes: a covering portion covering the main body from an outside of the building; an opposing surface facing the air vent at a predetermined distance when the cover member is attached to the main body; and a water-absorbing expansion material 16 attached to the opposing surface and expanding its width to equal to or more than the predetermined distance when absorbing water to block the air vent. The water-absorbing expansion material is removable from the main body together with the cover member.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a waterproofing device for a foundation drain that is installed between the foundation and base of a building and blocks air vents to the underfloor space in the event of flooding, thereby preventing flood damage. [Background technology]

[0002] Because moisture accumulates in the space under the floor of a building, a common structure is to place a spacer between the base of the building and the foundation on which it rests, and to provide a ventilation hole between them.

[0003] On the other hand, recent climate change has caused frequent flooding in various regions. When a building becomes flooded due to heavy rain or river flooding, water can seep in through these ventilation holes and accumulate in the space under the floor, causing greater water damage.

[0004] To solve this problem, the following conventional technology exists as a waterproofing device that uses a material that absorbs water and expands in part to automatically block air vents when a building is flooded. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2017-008654

[0006] Among the technologies disclosed in Patent Document 1, the second embodiment discloses a waterproofing device for a foundation drain that uses a water-absorbing volumetric expansion material (8) to block a ventilation path (VR) that connects from the outdoors (O) to the underfloor space (U).

[0007] In this conventional technology, a water-retaining tank (11) is formed in the middle of the ventilation path (VR), and a water-absorbent volumetric expansion material (8) is placed on the bottom (111) of the tank. When water enters and fills the tank (11), the water-absorbent volumetric expansion material (8) expands and comes into contact with the hanging portion (12), closing the ventilation path (VR) formed here and preventing water from entering the underfloor space (U). Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the conventional technology, it is explained that when the expanded water-absorbing volumetric expansion material (8) dries, it shrinks in volume, and the ventilation path (VR) opens again, restoring the ventilation function of the underfloor space (U). However, once the water-absorbing volumetric expansion material (8) absorbs water, it may be difficult to reuse it depending on its material.

[0009] For this reason, once a building suffers from flood damage, it is difficult to restore the original ventilation function of ventilating the underfloor space (U) and the outdoors (O) without replacing the water-absorbing volumetric expansion material (8).

[0010] In particular, in this conventional technology, the drainage member (6) located on the foundation of the building covers the storage tank (11), and so there was a problem in terms of workability in that it was difficult to replace the water-absorbing volumetric expansion material (8) placed on the bottom (111) of the storage tank (11).

[0011] The present invention is devised to solve the problems associated with conventional foundation drains that have water-tightness functions, and aims to provide a water-tight device for a foundation drain that, when the water-absorbent expansive material placed in the foundation drain is used due to flooding, allows the cover member, which is part of the foundation drain to which the water-absorbent expansive material is fixed, to be removable, thereby facilitating the replacement of the water-absorbent expansive material or the cover member itself, thereby improving maintainability. [Means for solving the problem]

[0012] A typical foundation drain with water-tightness function that solves the above-mentioned problems is a water-tightness device for a foundation drain having an air vent that connects the underfloor space of a building with the outside air, and comprises a main body in which the air vent is formed, and a cover member that can be attached and detached freely to the main body, the cover member having a covering portion that covers the main body from the outside of the building, an opposing surface that faces the air vent at a predetermined distance when the cover member is attached to the main body, and a water-absorbing expansion material that is attached to the opposing surface and expands its width to more than the predetermined distance when it absorbs water, thereby blocking the air vent, and is characterized in that the water-absorbing expansion material is removable from the main body together with the cover member. Effect of the Invention

[0013] In the present invention, when the foundation drip edge becomes submerged in water and the water reaches the air vent, the water-absorbing expansion material formed in the cover portion facing the air vent and attached to the opposing surface facing the air vent absorbs water, increasing its volume and width, thereby blocking the air vent and preventing water from entering the space under the floor of the building.

[0014] Next, once the water-absorbing expansion material has been used after being immersed in water, it can be removed together with the cover member to which the water-absorbing expansion material is attached, and replacement can be easily carried out. [Brief description of the drawings]

[0015] [Figure 1] 1 is a side cross-sectional view of a foundation structure of a building to which a waterproof device for a foundation drainage having a waterproof function according to a first embodiment of the present invention is attached. [Diagram 2] FIG. 2 is a perspective view of the waterproofing device according to the embodiment. [Diagram 3] 13 is an explanatory diagram of a state in which the rising pieces of the water-shielding device according to the embodiment stop the intruding water. FIG. [Figure 4] FIG. 13 is an explanatory diagram of a state in which the water-absorbing and expanding sheet of the water-shielding device according to the embodiment absorbs water that has transferred to the rising pieces, expands, and exerts a water-shielding function. [Diagram 5]10 is an explanatory diagram illustrating the attached and detached states of the cover member of the water-shielding device according to the embodiment. FIG. [Figure 6] 10 is a side cross-sectional view of a foundation structure of a building to which a waterproofing device for a foundation drainage having a waterproofing function according to a second embodiment of the present invention is attached. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] [First embodiment] 1 to 5, a first embodiment of a waterproofing device for a foundation drain according to the present invention will be specifically described.

[0017] As shown in Figures 1 and 2, the foundation drainage water-proofing device A in the first embodiment is composed of a main body 1 that is attached so as to block the ventilation space 103a of the foundation gasket (cat foundation) 103 formed between the foundation 101 and the foundation 103 of a building 100, and a cover member 12 that is freely attached and detached to the main body 11 so as to cover the outside air side of the main body 1.

[0018] The main body 11 and the cover member 12 are each an elongated member formed by pressing and bending a single metal plate such as steel, stainless steel, or aluminum, and as shown in FIG. 1, have the following cross-sectional shape.

[0019] The main body 11 has, from top to bottom, a first vertical plate portion 11a for fixing to the side of the foundation 101 of the building 100, a first horizontal plate portion 11b extending horizontally from the lower end of the vertical plate portion 11a, an exterior wall fixing portion 11c extending upward from the end of the first horizontal plate portion 11b, and a second vertical plate portion 11d extending downward from the end of the exterior wall fixing portion 11c, and by bending the end of the second vertical plate portion 11d toward the foundation 101, a first mating groove portion 11e that opens downward is formed.

[0020] The main body 11 is fixed to the base 101 by nails 110 hammered into nail holes (not shown) opened in the first vertical plate portion 11a. The first horizontal plate portion 11b is intermittently formed with openings 14, which, together with second openings 13B described later, form an air passage in the back space 108 formed on the back surface of the exterior wall 107.

[0021] Furthermore, there is a second horizontal plate portion 11f extending horizontally from the end of the first fitting groove portion 11e on the base 101 side, and a second vertical plate portion 11g extending downward from the second horizontal plate portion 11f. A protrusion portion 11h is formed at the middle of this second vertical plate portion 11g, protruding toward the base 101 side and extending in the longitudinal direction of the main body 11, and its tip is in line contact with the base 101 to separate the ventilation space 103a of the foundation packing 103 leading to the underfloor space 106 below from the wall back space 108 above it.

[0022] A first opening 13A is formed in the second vertical plate portion 11g below the protrusion portion 11h, forming an air passage F1 that communicates with the ventilation space 107 and then with the underfloor space 106, and a second opening 13B is formed in the second vertical plate portion 11g above the protrusion portion 11h, forming an air passage F2 that communicates with the back-of-wall space 108.

[0023] The lower end of the second vertical plate portion 11g extends horizontally toward the outside of the building 100 to form a third horizontal plate portion 11i, the tip of which is further bent to form a second fitting groove 11j that opens upward.

[0024] In addition, the lower edge of the exterior wall 107, the third horizontal board portion 11i of the main body 11 and the foundation 102, and the exterior wall fixing portion 11c of the main body 11 are respectively installed via watertight members 104, 109 such as rubber, thereby ensuring watertightness of the underfloor space 106 and the back-of-wall space 108 inside the building 100.

[0025] Next, the cover member 12 similarly has, from top to bottom, a first mating protrusion 12a that fits into the first mating groove 11e of the above-mentioned main body 11, with the end bent and protruding upward, a first horizontal plate 12b that protrudes from the first mating protrusion 12a in a direction away from the base 101, and a first vertical plate 12c that extends downward from the end of the first horizontal plate 12b. Here, the first horizontal plate 12b and the first vertical plate 12c form a cover that covers the main body 11.

[0026] The cover member 12 has a drainage section 12d formed by folding back the lower end of the first vertical plate section 12c toward the base 101, and a second horizontal plate section 12e extending from an end of the drainage section 12d toward the base 101. An outside air slit 17, which is an opening for letting in outside air, is formed in the second horizontal plate section 12e.

[0027] Furthermore, the end of the second horizontal plate portion 12e on the base 101 side protrudes downward to form a second mating protrusion portion 12f. In particular, this second mating protrusion portion 12f has the same width as the second mating groove portion 11j of the main body 11 described above, and they meet each other over a predetermined area to ensure watertightness.

[0028] The cover member 12 further bends the end of the second protrusion 12f upward to form a water blocking wall 12g at this position. When the cover member 12 is attached to the main body 11, the surface of the water blocking wall 12g on the base 101 side becomes an opposing surface 15 that faces the first ventilation port 13A and the second ventilation port 13B of the main body 11. A predetermined distance is maintained between the opposing surface 15 (water blocking wall 12g) of the cover member 12 and the second vertical plate 11g of the main body 11, and an opposing space 18 is formed here, and an air vent space 19 that allows air to pass from the outside air slit 17 to the openings 13A and 13B is formed between the water blocking wall 12g and the second vertical plate 12c.

[0029] That is, inside the water-shielding device A, an air passage F is formed that runs from the outside air slit 17 to the ventilation space 19, and further through the facing space 18 to the air vents 13A and 13B. The first air vent 13A communicates with the underfloor space 106 to form an underfloor air passage F1, and the second air vent 13B communicates with the back-of-wall space 108 to form a back-of-wall air passage F2.

[0030] Here, the cover member 12 is further bent above and below the opposing surface 15 to form a first engagement groove 12h and a second engagement groove 12i that open downward and upward, respectively. A water-absorption expansion sheet 16, which is a water-absorption expansion material, is attached to this opposing surface 15, and as described later, by inserting the upper and lower ends of the sheet-like water-absorption expansion sheet 16 into the first engagement groove 12h and the second engagement groove 12i, respectively, the water-absorption expansion sheet 16 can be attached to the cover member 12 in a sliding manner without adhesive.

[0031] Furthermore, the cover member 12 extends above the first engagement groove 12h in a direction away from the base 101, and forms a water return section 12j here with an L-shaped cross-section whose tip is bent downward. This water return section 12j covers the upper part of the outside air slit 17, and prevents rainwater from entering the water-absorbing expansion sheet 16 even if strong winds and rain flow in through the outside air slit 17, thereby preventing the water-absorbing expansion sheet 16 from operating except when flooded.

[0032] As described above, when the main body 11 of the water-proofing device A is fixed to the foundation 101 and base 102 of the building 100 and the cover member 12 is attached to this main body 11, the water-proofing device A is maintained in a watertight state by the watertight member 104, and the main body 11 and the cover member 12 are maintained in a watertight state between the second mating groove portion 11j and the second mating protrusion portion 12f, so that the only route for water to enter the underfloor space 106 and the back-of-wall space 108 is the ventilation path F from the outside air slit 17 to the ventilation space 19.

[0033] FIG. 2 shows a perspective view of the water-shielding device A described above, in which the structure of the ventilation holes 13A, 13B of the main body and the structure of the water-absorbing expansion sheet 106 attached to the opposing surface 15 of the cover member 12 will be described.

[0034] The water-absorbing and expanding sheet 16 is a rectangular sheet of highly water-absorbent polymer, which has the property of expanding its volume several hundred times when it absorbs water and occupies a space. Note that when the water-absorbent polymer absorbs water, each particle expands and gels, becoming soft and deformed, so that the water-absorbing and expanding sheet 16 does not return to its original shape even when it dries.

[0035] Therefore, once the water-absorbing expansion sheet 16 has demonstrated its water-absorbing function, it is necessary to replace the water-absorbing expansion sheet 16 in preparation for the next flooding. On the other hand, a backing that does not collapse even when water is absorbed is attached to one side of the water-absorbing expansion sheet 16, and by attaching this on the opposing side 15, the used water-absorbing expansion sheet 16 can be smoothly pulled out by a structure described later.

[0036] The water-absorbing expansion sheet 16 is attached to the cover part 12 without being adhered by inserting its upper edge 16a and lower edge 16b into engagement grooves 12h, 12i formed on the top and bottom of the opposing surface 15 of the cover member 12. Therefore, as shown by the imaginary lines in the figure, it can be inserted in the longitudinal direction of the opposing surface 15 along these engagement grooves 12h, 12i. In other words, when replacing the water-absorbing expansion sheet 16, maintenance can be easily performed after separating the cover member 12 from the main body 11.

[0037] As shown in the figure, the ventilation holes 13A and 12B formed in the main body 11 have a shape in which many small holes are opened in a matrix pattern. The water-absorbent expansion sheet 16 is disposed opposite the ventilation holes 13A and 13B, and when the water-absorbent expansion sheet 16 expands, the soft gelled water-absorbent expansion sheet 16 blocks these small openings, closing the ventilation path F.

[0038] Thereafter, when the cover member 12 is separated from the main body 11, the ventilation holes 13A, 13B are exposed to the outside of the building 100 together with the second vertical plate portion 11g of the container body, and even if part of the gelled water-absorbing expansion sheet 16 remains stuck in the opening of the ventilation holes 13A, 13B, it can be easily removed with a brush or the like.

[0039] Next, the waterproofing function of the waterproofing device A of this embodiment will be described with reference to Figures 3 and 4. As shown in Figure 3, when the surroundings of the building 100 are submerged in water, water also enters the interior of the waterproofing device A through the outside air slits 17.

[0040] At this time, the water that has entered through the outside air slit 17 rises along the water-stopping wall portion 12g of the cover member 12, but since the ventilation space 18 is formed above it, the water will not reach the ventilation openings 13A, 13B unless the water level hw of the submerged water exceeds the height hf of the water-stopping wall portion 12g.

[0041] That is, even if the water height hw exceeds the height of the ventilation openings 13A and 13B, the water blocking wall 12g acts as a dike and does not allow water to penetrate into the opposing surface 15 on the back side thereof, so that even if the water level is substantially higher than the position of the ventilation opening 13A, as long as the intrusion is below the height hf of the water blocking wall 12g, water will not penetrate into the ventilation opening 13A and the water-absorbing expansion sheet 16 will not be covered in water. Therefore, there is no need to perform maintenance after intrusion, such as replacing the water-absorbing expansion sheet 16 after expansion or cleaning the ventilation openings 13A and 13B.

[0042] In addition, since the water blocking wall portion 12g has a waterproof function within the range of its height hf, it is desirable that it is high, but the value is set appropriately in consideration of the relationship with the foundation 101 and the outer wall 107.

[0043] 4, when the water height hw increases further and exceeds the height hf of the water-stopping wall portion 12g, the water penetrates into the opposing surface 15 side, wetting the water-absorption expansion sheet 16. When this happens, the water-absorption expansion sheet 16 absorbs water and increases its volume for the first time, expanding beyond the predetermined distance between the opposing surface 15 of the cover member 12 and the second vertical plate portion 11g of the main body 11, filling the opposing space 18 and blocking the ventilation openings 13A and 13B.

[0044] That is, when the water-absorbing and expanding sheet 16 expands, it becomes gel-like, filling the facing space 18, and the particles then enter the small holes that form the ventilation openings 13A and 13B, closing them. Therefore, even if water exceeds the upper end of the water-stopping wall portion 12g, it cannot penetrate into the gel-like water-absorbing and waterproof sheet 16x, and the sheet exhibits a waterproof function for blocking water to the underfloor space 106 and the back-of-wall space 108.

[0045] The maintenance work of the water-shielding device A will be described with reference to Fig. 5. As described above, the cover member 12 is attached to the main body 11 by two engagement means at the top and bottom.

[0046] That is, at the upper part of the cover member 12, the first mating protrusion portion 12a of the cover member 12 is inserted into the first mating groove portion 11e of the main body 11, and at the lower part of the cover member 12, the second mating protrusion portion 12f of the cover member 12 is inserted into the second mating groove portion 11j of the main body 11, thereby connecting the two.

[0047] On the other hand, when removing the cover member 12 from the main body 11 fixed to the building 100, the operator can easily release the engagement between the second engaging protrusion portion 12f and the second engaging groove portion 11j by hooking his / her fingers on the drainage portion 12d of the cover member 12 and deforming it so as to lift the second horizontal plate portion 12e upward.

[0048] Then, by rotating the cover member 12 so as to flip it up, using the first engaging protrusion portion 12a engaged with the first engaging groove portion 11e as a fulcrum, the engagement between the first engaging protrusion portion 12a and the first engaging groove portion 11e can also be released, and the cover member 12 can be easily removed from the main body 11, i.e., the building 100.

[0049] In addition, the cover member 12 can also be easily removed by rotating it relative to the main body 11 by releasing the shape of the first mating protrusion portion 12a that is mated with the first mating groove portion 11e and rotating it around the engagement between the first mating protrusion portion 12a and the first mating groove portion 11e as a fulcrum (not shown).

[0050] Therefore, with the cover member 12 removed, as described above, the water-absorbing expansion material 16 can be replaced in a sliding manner using the engagement grooves 12h, 12g of the cover member 12, or it can be replaced with a new cover member 16 equipped with an unused water-absorbing expansion sheet 16.

[0051] Furthermore, when the cover member 12 is removed, the openings 13A, 13B of the main body 11 are exposed to the outside of the building 100, so that cleaning of the remaining water-absorbing expansion sheet 16 can be easily performed, and a water-proofing device for foundation drainage that is easy to maintain can be provided.

[0052] [Second embodiment] Next, a second embodiment of the present invention will be described with reference to Fig. 6. The same structures as those in the first embodiment are given the same reference numerals and the description thereof will be omitted.

[0053] This embodiment differs from the first embodiment in that in addition to the nail 110, nails 111 are used to fix the main body 11 to the base 101 at two points, thereby ensuring watertightness of this portion.

[0054] In this embodiment, a part of the second horizontal plate portion 12e of the cover member 12 is raised upward to form a mating groove 12f1 as a mating portion. Meanwhile, the third horizontal plate portion 11i1 of the main body 1 is bent so that its end rises upward to form a mating protrusion portion 11j1 as an engaged portion. As in the first embodiment, the upper mating protrusion portion 12a of the cover member 12 engages with the mating groove portion 11e of the main body, and the lower mating groove portion 12f1 engages with the mating protrusion portion 11j1 of the main body 11, so that the cover member 12 is fixed to the main body 11. In this way, the protrusions and grooves can be freely selected in combination for the mating portion of the main body 1 and the mating portion of the cover member 12.

[0055] Furthermore, in the first embodiment, the water-absorbent expansion sheet 16 was slidably attached and detached to the opposing surface 15 of the cover member 12, but in this embodiment, no engagement grooves are formed above and below the opposing surface 15 of the cover member 12, and instead, guides 12h1, 12i1 for attaching the water-absorbent expansion sheet 16 are formed, and the water-absorbent expansion sheet 16 is directly adhered to the opposing surface 15 between the two with double-sided tape or the like.

[0056] Unlike the first embodiment, the third horizontal plate portion 11i1 of the main body 11 does not incline downward, but extends horizontally outward from the building 100 while maintaining the height hb of the foundation 101. Therefore, even if the foundation 102 protrudes from the outer wall 107, the main body 11 can be smoothly fixed to the base 101 without interfering with the foundation 102.

[0057] [Other variations] The base drip rack of the present invention can also adopt variations other than the first embodiment described above, as follows.

[0058] Although the main body 11 and the cover member 12 are described as being formed by bending a metal plate, they can also be formed by extrusion molding. Also, in the engagement structure between the main body 11 and the cover member 12, the engagement between the second engagement groove portion 11j and the second engagement protrusion portion 12f may not have a watertight function, and water may directly enter from below the facing space 18 to cause the water-absorbing expansion sheet 16 to function.

[0059] In the above embodiment, a belt-shaped water-absorption expansion sheet is used as the water-absorption expansion material. However, for example, granular water-absorption expansion material may be packed in a mesh bag and attached to the cover member.

[0060] In addition, in the above embodiment, the cover member is attached to the main body using the mating protrusions and mating grooves, but it is sufficient if the cover member can be easily attached and detached from the main body, and a structure in which it is fixed with screws or the like can also be selected.

[0061] In the above embodiment, the vents in the main body are formed separately for the underfloor space and the space behind the wall, but a common vent may be used. The shape of the vent may be fine enough so that the water-absorbing expansive material that has absorbed water and gelled does not flow out, and a mesh shape with a specified mesh may be selected in addition to a matrix of small holes. [Explanation of symbols]

[0062] A…Water-proof device for foundation drainage (water-proof device) 11...Main body 11e...First mating groove part (first mating part) 11j…Second mating groove (second mating part) 12...Cover member 12a...First mating protrusion (first mating part) 12b…First horizontal plate portion (cover portion) 12c…First vertical plate portion (cover portion) 12f…Second mating protrusion (second mating part) 12g…Water-stopping wall (water-stopping wall) 12h, 12i...Engagement groove 12j…Water return section (water return) 13A...Ventilation opening (to the underfloor space) 13B...Ventilation opening (to the space behind the wall) 14...Opening (to the space behind the wall) 15…Opposite surface 16...Water-absorbing expansion sheet (water-absorbing expansion material) 17…Outside air slit (outside air opening) 18...Facing space 19…Ventilation space 100…Buildings 101... Foundation 102…Fundamentals 106…Underfloor space 107…Exterior wall 108…Back wall space F: Ventilation passage F1: Ventilation passage to the underfloor space F2: Ventilation path to the space behind the wall WL…Water surface

Claims

1. A water-tightening device for a foundation drain having an air vent that connects the underfloor space of a building with the outside air, comprising: a main body in which the air vent is formed; and a cover member that can be attached and detached freely to the main body, the cover member having a covering portion that covers the main body from the outside of the building, an opposing surface that faces the air vent at a predetermined distance when the cover member is attached to the main body, and a water-absorbing expansion material that is attached to the opposing surface and expands its width to more than the predetermined distance when it absorbs water, thereby blocking the air vent, wherein the water-absorbing expansion material is removable from the main body together with the cover member.

2. The water-shielding device for foundation drainage according to claim 1, A first engaging portion and a second engaging portion are formed on the upper and lower edges of the cover member, respectively, and a first engaged portion and a second engaged portion are formed on the main body, respectively, and the cover member is removably attached to the main body by engaging the first engaging portion and the first engaged portion, and the second engaging portion and the second engaged portion, respectively.This is a water-proofing device for a base drainage.

3. The waterproofing device for a foundation drainage according to claim 1 or 2, The water-absorbing expansion material is a band-shaped water-absorbing expansion sheet, the cover member has upper engagement grooves and lower engagement grooves that are parallel to each other above and below the opposing surface, and the upper and lower edges of the water-absorbing expansion sheet are inserted into the upper groove and the lower groove, respectively, making the water-absorbing expansion sheet freely attachable and detachable in a sliding manner.This is a water-proofing device for foundation drainage.

4. The waterproofing device for foundation drainage according to claim 1 or 2, The cover member further has an outside air opening that opens at the lower end of the cover member, and a water-stopping wall that rises from below to separate the outside air opening from the air vent of the main body and forms an air vent space upward that connects the outside air opening and the air vent, and the opposing surface is formed on one side of the water-stopping wall.

5. 5. A waterproof device for a foundation drain according to claim 4, wherein an upper end of the water blocking wall is bent so as to cover the upper part of the outside air opening, thereby forming a water return.

6. 3. A waterproofing device for a foundation drain according to claim 1 or 2, characterized in that the air vent is formed by a number of small holes.

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