JP2020016136A - Cut-off device - Google Patents

Abstract

To provide a popular type cut-off device which does not need a cost or trouble on manufacturing or installation and performs a cut-off action effectively according to a need.SOLUTION: The cut-off device comprises, as a main member, a cut-off sheet 15 having a sheet main part 16 suspended across a front side of left and right side walls 1 and 2 of a structure and a lower front side of an entrance 3 formed between both side walls in 3-D shape and with left and right ends fixed detachably to a surface of a sheet end receiving surface 8a arranged in a front side of the side walls 1 and 2 in an adhesion shape, and a lower tongue piece 17 extending forward from a lower end of the main part and capable of being in close contact with the entrance 3 and a forward base of both side walls, and further comprises upper fixing means 8 and 9 capable of fixing left and right ends of the sheet main part 16 to the side wall side in an adhesion shape and lower fixing means 12 capable of fixing left and right ends of the lower tongue piece 17 to a front base 6 side in an adhesion shape.SELECTED DRAWING: Figure 3

Description

  The present invention is intended for entrances and exits of various buildings such as buildings, factories, warehouses, stores, underground facilities, etc., and blocks heavy rainfall, tsunamis, high waves, etc. The present invention relates to a water stop device for eliminating damage.

  If the rainfall exceeds a certain limit, such as during a torrential downpour, flooding of inland water on flat lands and flooding of external water through rivers may occur and cause serious damage by invading buildings and various facilities through doorways and gaps. become. In order to drastically reduce such damage, an invention on a waterproof (water stoppage) device as disclosed in Patent Document 1 has been made.

JP 2004-162260A

Patent Document 1 discloses a waterproof device at the entrance of a structure, which has a single groove-shaped concave portion Ma opened to the entrance I side of the structure BL, and the left and right sides of the entrance I opposed to each other. A pair of left and right main columns M provided along the wall surface W, and a pair of mutually opposite groove-shaped concave portions Sa opened on the pair of left and right main columns M, respectively, and a floor between the two main columns M is provided. An auxiliary column S which can be detachably set up on the surface F, and a plurality of waterproof plates T which can fit and support both right and left ends between the groove-shaped concave portions Ma, Sa: Sa, Sa of two adjacent columns. The waterproof plates T are arranged in tandem with each other along the longitudinal direction of the drain groove 1 so as to function as a groove cover of the drain groove 1 around the structure entrance I at normal times, and the opening of the drain groove 1 is provided. It is characterized in that it is engaged and mounted on both side edges of the portion and is flush with the floor surface.
Since the waterproofing device needs to form a drainage groove 1 in front of the entrance I to set the waterproofing plates T... At normal times, it requires large-scale trenching work and is expensive. In addition, since the waterproof plates T are arranged and used as groove covers of the drainage grooves 1 in normal times, they are made of a metal plate or a frame having sufficient strength to withstand the load as the groove covers. Therefore, in the event of an emergency, when the waterproof boards T are set to the closed state or when the closed state is returned to the original use state of the lid, the work is heavy and the work cannot be performed quickly. Also, in case of emergency, after the waterproof plate T is removed and set to the closed state, the drain ditch 1 is opened. Therefore, in case of flooding thereafter, people who pass through the invisible drain ditch 1 may be dangerous. Things.
For this reason, the present applicant has invented a water stopping device that enables winding and unwinding by using the front surface of the side wall of the structure. The water stop device is a water stop device which is provided to be able to open and close at an entrance formed between a pair of left and right side walls on one side and the other to stop water when closed. Is provided with an outer case projecting to the outside, and in this outer case, a water-stop sheet made to be water-stoppable as a main layer of a reinforcing fiber such as aramid fiber or carbon fiber is provided so as to be able to be fed out freely, The other is characterized in that the water stopping sheet is extended and fixed.
This water stop device can quickly and easily take a state of stopping water in the event of an emergency flood such as a flood or a tsunami, and thereafter can quickly and easily take a avoidance state from the state of stopping water, as described above. There is no need for trench construction and there is no danger that people passing by during the flood will fall into the trench.
However, this water stop device has an outer case composed of a case supporting frame, a back mounting plate, an upper and lower support plate, an open / close lid type case body, and a winding shaft / winder for enabling the water stop sheet to be wound and fed out. It consists of a combination of take-up levers, upper and lower bearings, and other winding and unwinding means. The production and installation of these take up time and effort, and cannot be said to be inexpensive and easy to install.

  The present invention is intended to solve such a problem, and provides a widespread type water stopping device that does not require cost and labor in manufacturing and installing, and also effectively exhibits a water stopping effect as required. The purpose is to:

  In order to achieve the above object, the present invention according to claim 1 is, in an upright manner, stretched so as to cover the front surfaces of the left and right side walls of the structure and the lower front surface of the entrance formed between the both side walls. And a sheet main portion whose left and right ends are fixed in a detachable manner in close contact with the surface of a sheet end receiving surface provided on the front surface of the side wall, and extending forward from a lower end of the main portion. The main member is a water-stop sheet having an entrance and a lower tongue piece that can be brought into close contact with the front base on both side walls, and the right and left ends of the sheet main part can be fixed to the side wall side and fixed. Fixing means, and lower fixing means capable of fixing the right and left ends of the lower tongue to the front base side in close contact with each other, and fixing the water-stop sheet to the sheet main part and the lower tongue in normal times. To make it possible to wait at any position inside or outside the structure. In an emergency, the rolled state is developed and the lower tongue is placed on the front base so that the main part of the seat can be fixedly installed through the lower fixing means and the upper fixing means so as to be in a shielding state from both side walls to the entrance. It is characterized by being.

  As described above, the present invention is provided in such a manner that the left and right ends of the structure are stretched over the front surface of the left and right side walls of the structure and the lower front surface of the entrance formed between the both side walls, and the right and left ends are formed on the front surface of the side wall. The main part of the seat, which is designed to be detachably fixed in close contact with the surface of the seat end receiving surface provided, and extends forward from the lower end of the main part and can be in close contact with the entrance and the front base of both side walls. Upper fixing means having, as a main member, a water-stop sheet having a lower tongue that is fixed to the left and right ends of the lower part of the lower tongue. And a lower fixing means capable of fixing the portion in close contact with the front base side, and in a normal state, the water-stop sheet is formed by folding a sheet main portion and a lower tongue piece into a wrapped state so that the water-stopping sheet can be placed inside or outside the structure. While it is possible to be able to stand by at that position, in the case of emergency, expand the winding state The tongue piece is fixed on the front base via the lower fixing means and the upper fixing means so that the main part of the seat is shielded from both side walls to the doorway. It is possible to provide a popular water-stop device that does not require any cost or trouble in installation, and effectively exhibits a water-stop function as required.

  FIG. 3 is a cross-sectional plan view corresponding to the line AA of FIG. 2 and showing the water stop device according to the embodiment of the present invention in a closed state.   The front view of FIG.   FIG. 3 is a perspective view showing the water stop device in a closed state in FIGS. 1 and 2.   The side view which takes out and shows only a water stop sheet.   FIG. 4 is a perspective view showing a state in which a sheet main part of the water stop sheet is raised or folded.   The perspective view which shows the state which made the water stop sheet wait.   The perspective view showing other embodiments.   FIG. 8 is an enlarged sectional view taken along line BB of FIG. 7.   The perspective view showing other embodiments.   Sectional drawing which shows another embodiment.   FIG. 7 is an exploded perspective view showing another embodiment.   The perspective perspective view which shows other embodiment.   Sectional drawing which shows other embodiment.   Sectional drawing which shows other embodiment.   FIG. 17 is a sectional view showing an additional proposal example corresponding to line CC of FIG. 16.   The front view seen from the right side of FIG.   The perspective view showing other additional proposal examples.   FIG. 13 is a perspective view showing a conventional example of another additional proposed example.   FIG. 21 is a longitudinal sectional view showing another additional proposal example corresponding to the line DD in FIG. 20.   FIG. 20 is an enlarged sectional view taken along line EE of FIG. 19.   The perspective view showing other additional proposal examples.   The perspective view showing other additional proposal examples.

  FIGS. 1 to 6 show an embodiment of the water stop device according to the present invention, wherein 1 is a side wall on one side (right side as viewed) of a factory (structure), 2 is a side wall on the other side (left side), An entrance / exit 3 having a width of about 4 m is formed between them, and an electric shutter 4 is provided behind the entrance / exit 3. The shutter 4 may be a manual type, or may be another opening / closing means such as a door or a sliding door. In the water stop device of this embodiment, opening / closing means such as the shutter 4 may not be provided. The width of the side walls 1 and 2 is about 50 cm.

  An open floor surface 5 is formed below the lower front surface 3a of the entrance 3 and a front base 6 which is an external floor surface is formed outside thereof and in front of lower ends of the side walls 1 and 2. The inner and outer surfaces 5 and 6 are horizontal and the same surface, but the front base 6 may be formed so as to be slightly lowered outward and inclined.

  One (right) side wall 1 is the base side in the sense that it is the standby side of the waterproof sheet, and the other (left) side wall 2 is the front side. On the front surfaces 1a and 2a of the side walls 1 and 2, sheet end receiving plates 8 and 8 having a vertically long plate shape are fixed by metal or resin. A seat end receiving surface 8a is formed on the seat end receiving plate 8, and a plurality of upper fixing bolts 9 projecting upward and downward are provided so that a nut (wing nut) 10 is attached. . The upper fixing bolt 9 and the nut 10 constitute upper fixing means. In some cases, the front surfaces 1a and 2a of the side walls 1 and 2 may be used as the sheet end receiving surfaces 8a by omitting the sheet end receiving plate 8. In addition, the outer surface of each of the side walls 1 and 2 may be a seat mounting surface or a mounting surface of the seat end receiving plate 8.

  Reference numeral 12 denotes a lower fixing bolt, which is a wing bolt, and together with the bolt screw holes 13, constitutes a lower fixing means. The lower fixing bolts 12 are respectively screwed into bolt screw holes 13 integrally implanted at four locations slightly outward from the front of the right and left side walls 1 and 2 so as to end each end of the lower tongue piece 17. Is detachably fixed.

  Reference numeral 15 denotes a water-stop sheet. The water-stop sheet 15 has a width (height) of 1 m to 1.5 m, a sheet main portion 16 having a length of about 5 m, and a lower tongue having a width of 30 cm and a length of 5.6 m. The water-stop sheet 15 has a knitted sheet of aramid fiber (or carbon fiber) in the vertical and horizontal directions as a main layer material. Although a plurality of sheets are formed, a resin sheet (or film) having a water-blocking function is integrally laminated on one or both of the front and rear surfaces of the main layer material (not shown). A rubber material may be integrally formed with the knitted sheet. As the resin sheet, an ultrathin sheet such as a polyethylene-based thermoplastic polyolefin sheet, a thermoplastic polyether-based polyurethane sheet, or a polypropylene-based thermoplastic polyolefin sheet is preferable as a sheet having excellent physical and chemical properties, but is not limited thereto. Not done.

  As shown in the lower right part of FIG. 1, an upper inner core plate 18 made of a thin and long rectangular metal or resin plate is inserted into both end portions of the seat main portion 16 so as to fit with the upper fixing bolts 9. Upper bolt holes 19 shown at the upper right of FIG. 3 are opened. Further, as shown in FIG. 4, an upper reinforcing wire 20 such as a wire rope may be passed through the back surface of the seat main portion 16 to reinforce the seat main portion 16 itself. A vertically long back seal 21 may be provided on the back surface of the sheet main portion 16 to enhance the adhesion of the sheet main portion 16 to the sheet end receiving surface 8a.

  At both ends of the lower tongue piece 17, a lower inner core plate 22 such as a metal plate or a resin plate is loaded and reinforced so that it can be wound up. The lower bolt holes are drilled to match A lower tension wire 23 made of a wire rope is passed through the front tongue-like portion of the lower tongue piece 17 and is drawn out to the left and right, and a bolt passing ring 25 through which an anchor bolt 24 is passed is provided at its end. Is provided. If the lower tension wire 23 is made of a stretchable rubber wire or a coil-shaped wire, the lower tongue piece 17 can be pressed down to be in close contact with the front base 6.

When the lower tension wire 23 is provided not on the tip of the lower tongue piece 17 but on the base side of the lower tongue piece 17 as shown in FIGS. 7 and 8, the adhesion of the lower tongue piece 17 is improved. At this time, as shown in FIG. 8, a belt-like bottom seal 26 made of non-permeable, elastic and elastic rubber or foam resin is provided on the bottom surface of the base of the lower tongue piece 17, and the lower tension is applied. The close contact between the wire member 23 and the front substrate 6 may be enhanced by the rolling force due to the tension of the wire material 23. In this case, if the lower tension wire 23 is a rubber wire, a coil wire, or the like, the degree of adhesion is further increased. Numeral 28 is a rotary winding reel, and 29 is a lever lock pin, which is an instrument for strongly pulling the lower tension wire 23 to make the bottom seal 26 more closely contact. As shown in the lower left column of FIG. 7, the lower tongue piece 17 may have a narrow width and a system in which a lower tension wire 23 is connected to one end. As shown in FIG. 8, a weight 31 such as a long sandbag or sandbag may be placed on the upper side of the base of the lower tongue piece 17 in order to increase the rolling force.
However, the above-described method of bringing the lower tongue piece 17 into close contact with the substrate 6 is merely an example, and there are various methods described below other than the method using the lower tensile wire 23.

  FIG. 6 shows the water-stop sheet 15 in a state in which the base end of the lower tongue piece 17 is fastened and fixed by the lower fixing bolts 12 and the sheet main part 16 is folded on the lower tongue piece 17 side. It shows a state in which it is wrapped and ready to be deployed at any time in an emergency. The water-stop sheet 15 in a state where the lower fixing bolts 12 are removed and rolled up is loaded and stored in the storage case 33 in front of the side wall 1, extracted in an emergency, fixedly set by the lower fixing bolts 12 and deployed. Is also good.

  The storage case 33 is made extremely simple (a circular (or polygonal) cylindrical shape lower (50-80 cm) than the water-stop sheet 15 so that the water-stop sheet 15 in a wound state can be easily taken in and out. Is preferred. It may be a storage bag made of the reinforcing fiber. The wound water-stop sheet 15 may be made to stand by indoors of the structure that is the side walls 1 and 2, and may be taken out to the front side in an emergency. In that case, the water stop sheet 15 may be installed indoors through an exposed state or through a storage case. The storage case may be of a simple type such as a resin tube or a net tube which only needs to put the water stop sheet 15 in and out.

  When an emergency such as heavy rain or tsunami is about to occur on the water-stop sheet 15 in the standby state wound as shown in FIG. 6, the water-stop sheet 15 is unfolded and extended as shown in FIG. Is fixed with the lower fixing bolts 12 and the lower tension wire 23 is extended so that the lower tongue piece 17 is brought into close contact with the front base 6, and then, as shown by the arrow X, After the main portion 16 is raised, the upper bolt holes 19 at both ends thereof are inserted into the upper fixing bolts 9 and then the nuts 10 are screwed into the main portion 16 to stop water as a water shield as shown in FIGS. The state can be obtained. The shutter 4 can be closed before or after the water stop sheet 15 is brought into the water blocking state.

  After the flood or the like has passed, the seat main part 16 is folded forward as shown in FIG. 5 by removing the upper fixing bolts 9 and then the lower fixing bolts 12 and the anchor bolts 24 on the left side of FIG. As shown in FIG. 6, it can be wound and returned to the standby state while being folded. The wound waterproof sheet 15 may be laid horizontally as shown in FIG. 6, but the lower fixing bolts 12... You can also wait for loading. The storage case 33 is fixed to the outside of one of the side walls 1 and 2 as shown on the right side of FIG. 6, or is provided on one of the side walls 1 and 2 as shown on the left side of FIG. Can be set inside.

The upper fixing bolts 12 project in a normal state as shown in the lower column of FIG. 1, and if left as it is, it is dangerous that a person passing by nearby may be caught, but a V-shaped support supported by a hinge Alternatively, if the U-shaped maintenance cover 35 is put on the cover, it becomes safe. In an emergency, the cover 35 can be opened to expose the seat end receiving plate 8 and the upper fixing bolt 9 to make it usable.
Although the lower fixing bolt 12 and the anchor bolt 24 are butterfly bolts, as shown in the lower right column of FIG. 3, the ring bolt 12 (24) with a flange is used. In the event of an emergency, it can be turned on and turned on so that it can be operated. Like the ring bolt 12 (24) in the right column of the figure, if the flange portion is made thin and has a low head structure provided with a semi-ring portion for stopping the ring, a bolt that does not stick more is provided. Can be

Other embodiments will now be described.
In order to make the lower tongue piece 17 adhere to each other, a holding plate 37 which is a flat bar made of metal or resin is provided along the base-side upper surface of the lower tongue piece 17 as shown by a virtual line in FIG. It can be constituted by pressing and fixing the plate 37 with holding bolts 38. A seal may be attached to the back surface of the lower tongue piece 17. When the holding plate 37 is placed, the lower tension wire 23 can be omitted.

  In order to make the lower tongue piece 17 adhere to each other, as shown in the lower section of FIG. You may make it mount on a side upper surface. A plurality of the weights 40 may be used, and the sac itself may be partially or entirely permeable. Further, as shown in the lower left of FIG. 3, the weight 40 may be divided into bags of a fixed length such as 1 m so as to be able to be folded and transported. Also in this case, the pressing plate 37 and the lower tension wire 23 can be omitted. The weight 40 can be stored in a factory or a warehouse in a standby state, or can be stored in a standby state outside the side walls 1 and 2.

  As shown in FIG. 6, a double-sided adhesive tape 42 is adhered to the back surface of the lower tongue piece 17 in order to make the lower tongue piece 17 adhere to each other. You may make it. Also in this case, the lower tension wire 23 can be omitted. The adhesive tape 42 may be of a type divided into a plurality of pieces. Further, a weight 40 as shown in FIG. 3 may be placed on the lower tongue piece 17.

  As shown in FIG. 9, the lower tongue piece 17 and the sheet main part 16 are made of rubber or soft resin so as to be expandable and contractible so as to make the lower tongue piece 17 adhere to the lower tongue piece 17 as shown in FIG. The lower tongue piece 17 is provided with a back seal 44 that can be extended and contracted and attached to the base 6 in order to further adhere to the front base 6 by pulling the lower tongue piece 17. It is something that will improve.

  In order to make the lower tongue piece 17 adhere to each other, as shown in FIG. 10, a strip-shaped thin plate-like magnet 46 made of neodymium coated with polyamide is embedded at a shallow position in the board of the front base 6 while the lower tongue piece 17 At a corresponding position, a strip-shaped thin plate-shaped suction plate 47 made of a steel rubber sheet is sealed by waterproofing and sealing. Both the magnet 46 and the suction plate 47 are long corresponding to the longitudinal length of the lower tongue piece 17.

Further, as shown in the upper right of the figure, a seal pad 48 made of rubber or soft resin may be attached to a portion corresponding to the back surface of the suction plate 47 of the lower tongue piece 17 to increase the degree of adhesion. A highly permeable rust inhibitor (for example, trade name: Pega Sabin) may be applied to the concrete around the magnet 46.
If the combination of the magnet 46 and the suction plate 47 is also configured on the front side of the lower tongue piece 17, the degree of adhesion is further improved. The magnet 46 may be provided on the lower tongue piece 17 side, and the suction plate 47 may be provided on the front base 6 side. Both the lower tongue piece 17 side and the front base 6 side may be constituted by magnets that are mutually attracted.

  As shown in FIG. 11, a rubber mat 50 with a magnet is laid on the front base 6 side in order to make the lower tongue piece 17 adhere to each other, and an adsorbing plate 51 made of a flat iron material (or a thin plate magnet) is provided in the lower tongue piece 17. They are inserted so that they are in close contact with each other by suction, so that flood from the front can be blocked.

  As shown in FIG. 12, a weight 53 such as earth and sand or sand is put in the lower tongue piece 17 to make the lower tongue piece 17 adhere to each other. In addition to the lower tongue piece 17 containing the weight 53, a long separate weight 40 as shown in FIG. 3 may be placed. 54 may not be provided as a bottom seal. The lower tongue piece 17 may be a partition type as shown in the lower left column of FIG.

  FIG. 13 shows a state in which a bottom seal 58 is attached to the bottom surface of a seat plate 57, which is the lower end of the shutter 4, and a screw hole 59 is provided in the open floor surface 5 below the seat plate 57, and the shutter is stopped by a shutter stop 60 screwed into the screw hole. The structure is designed to prevent the 60 bottom from being flooded. In this case, there are cases where the water stop sheet 15 is provided as shown in the left column and cases where it is omitted.

  FIG. 14 shows a back tongue piece 63 having the same width as that between the side walls 1 and 2 provided integrally with a rear side of the lower tongue piece 17 on the water stop sheet 15 side. Since the seat plate 57 at the time acts so as to press, inundation from the front is prevented. The water-stop sheet 15 can be wound with the lower tongue piece 17, the back tongue piece 63, and the sheet main part 16 folded. In this case, the lower tongue piece 17 may be omitted. 64 is a front bottom seal, and 65 is a rear bottom seal. The seat plate 57 may be temporarily stopped with a fastening device 66. The front seat plate 57 may be provided with a seat plate seal 67 and the back tongue piece 63 may be pressed down.

FIG. 15 et seq. Show additional proposal examples.
15 and 16 are examples in which a plurality of poles 71... Are erected and arranged on a base 70 and guardrails 72, 72 are vertically arranged through one side thereof. For example, the right side of FIG. It is designed to protect roads, houses, fields, towns, towns and people on the left side of the figure from floods and storm surges coming from certain rivers and the sea. Reference numeral 73 denotes a reinforced fiber cloth made of aramid fiber or carbon fiber, and reference numeral 74 denotes a protection panel, which is fixed in front of the guard rail 72 so that the protection can be effectively performed. Although a support piece 75 is provided on the front surface of the pole 71 as an existing one, in this example, a lowermost support piece 76 is added and the reinforcing fiber cloth 73 extended long downward through the front surface and the protection The panel 74 is mounted and supported, and a wide range of protection up to the lower circumference is also possible.

  The example of FIG. 17 shows a case in which a stronger protection system is employed in place of the wire-net type protection structure which has been configured as a countermeasure against landslides. That is, a large number of piles 78 are driven into the foot of the mountain, and a wire net 79 receiving the force of the landslide is stretched through the piles 78. In addition to this, a force is preliminarily received on the mountain side. One or more layers of reinforcing fiber cloth 80 such as aramid or carbon fiber are attached and provided. 81 is a reinforcing leg material. The composite protective structure of the wire net 79 and the reinforcing fiber cloth 80 may be installed not only at the foot of the mountain but also at the side of the house 82 so as to provide stronger protection. It may be set up around a space to be protected (such as a bedroom).

  FIG. 18 shows a conventional example of a wire rope type protective fence (also referred to as a buffer type guard cable), in which 85 is a seat plate, 86 is an intermediate support, 87 is a wire rope, and 88 is a cap. Is passed through a rope holder 89 made of rubber, resin, or the like, and a plurality of upper and lower wire ropes 87 are passed through a plurality of the rope holders 89. This type of guard fence has the characteristic that the probability of being saved in the event of an accident is considerably higher than that of guardrails. The wire ropes 87 have a sleeve structure. When the wire ropes 87 are broken, the construction is completed by adjusting the wire ropes 87 by removing the intermediate support 86 and replacing it with a new one.

  By the way, as shown in FIGS. 19 and 20, the wire rope type protective fence is covered with a reinforcing fiber cloth 91 such as aramid fiber or carbon fiber as an inner layer for a long time, and as a weather-resistant reinforcing cloth as an outer layer (front and rear). 92 are stretched. Reference numeral 93 denotes a pressing plate which is provided corresponding to the front / rear position of the intermediate support 86 between the cloths 91 and 92, and is pressed and fixed via a fastener (not shown). Reference numeral 94 denotes a reinforcing protection pipe, which is fixed upright so as to extend from the seat plate 85 so as to correspond to each of the front and rear sides of the holding plate 93 so as to secure the protection of the protection fence.

FIG. 21 shows an example of an additional proposal for protecting agricultural products such as fruits and vegetables such as rice, apples and pears from attacks such as typhoons and strong winds. 95 is a pole, 96 is a tension anchor, 97 is a reinforcing fiber cloth (front), and 98 is a simple fence (rear).
FIG. 22 shows an example of an additional proposal for protecting agricultural products and the like from hail and hail attacks from above. 101 is a corner support, 102 is a tension anchor, 103 is a main wire, 104 is a reinforcing fiber cloth made of aramid fiber or the like.

  1, 2 ... side wall 3 ... doorway 6 ... front base 15 ... water stop sheet 16 ... seat main part 17 ... lower tongue piece 8a ... seat end receiving surface 8, 9, 10, 18, 19 ... upper fixing means 12, 13 , 22, 23, 24, 25 ... Lower fixing means.

Claims (1)

  A sheet end receiving surface which is extended in an upright manner so as to extend over the left and right front surfaces of the left and right side walls of the structure and the lower front surface of the entrance formed between the both side walls, and has left and right ends provided on the front surface of the side wall. The main part of the seat, which is adapted to be detachably fixed to the surface of the main part, and the lower tongue piece extending forward from the lower end of the main part and capable of closely adhering to the front base of the doorway and both side walls. The upper fixing means which has the water stop sheet as a main member and can fix the left and right ends of the sheet main part in close contact with the side wall side, and the right and left ends of the lower tongue piece in close contact with the front base side And a lower fixing means that can be fixed to the water stopping sheet, and in a normal state, the sheet main part and the lower tongue piece are folded and wound so as to be able to stand by at any position inside or outside the structure. On the other hand, in an emergency, the rolled state is developed and the lower tongue piece is sealed on the front base. Waterproofing device DOO main unit, characterized in that it is fixed installable configured via the lower fixing means and the upper fixing means so as to from both side walls to the doorway and the shielding state.