JP2006257652A - Rise/fall type waterproof door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rise/fall type waterproof door with high storability, which reduces the weight of equipment, and which satisfies passability and landscape properties in ordinary cases, and pressure resistance and confidentiality in an emergency. <P>SOLUTION: This rise/fall type waterproof door 1 comprises: a bag body 6 wherein an air supply and exhaust opening 6a is formed, which is engaged with a floor surface 7b and a wall surface 7c in the state of close contact with them, and which checks inflow water 5 by serving as a weir in an emergency; a storage groove 7 which is formed in a U-shape in a floor 2 and a wall 3 in such a manner that a passage 4 is seen on a front side, and which makes the bag body 6 stored inside the floor 2 and the wall 3 in the ordinary cases; a covering lid 8 which is installed on the upper part 6b of the bag body 6, so as to close an upper part 7a of the storage groove 7 in the ordinary cases; and an air supply and exhaust means 12 which is connected to the inside 6c of the bag body 6, so that air can be supplied to and exhausted from the inside 6c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

    The present invention relates to a undulating waterproof door installed at an entrance of an underground facility or the like.

Conventionally, waterproof doors are installed in underground facilities and roads to prevent flooding during floods. Waterproof doors include undulations, slides, and swings. The waterproof door is always stored in a predetermined place and functions as a waterproof door in an emergency. When landscapes are required, such as at the entrance of a building, many undulations with high storability are used. The undulating waterproof door is normally housed in the lower part of the floor so that the waterproof door body is the floor, and undulates by an undulating means in an emergency and functions as a waterproof door. As the raising / lowering means, a mechanical type using hydraulic pressure, or a means for raising and lowering by supplying compressed air to the intake expansion body has been proposed (see, for example, Patent Document 1).
JP-A-9-170382

  However, in the conventional waterproof door, the waterproof door main body always functions as a floor and functions as a pressure plate in an emergency, and therefore, it is necessary to have a structure that can withstand an overload and water pressure of a vehicle or the like. In addition, the waterproof door body that satisfies the above conditions is increased in weight, and there is a problem that the raising and lowering means for raising and lowering the waterproof door body in an emergency becomes large.

  This invention has been made in view of the above-described circumstances, and is a rugged waterproof door with high storability, which reduces the weight of the device, and is always occupancy and landscape, and pressure resistance in an emergency. And provide undulating waterproof doors that satisfy confidentiality.

In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 is installed in a passage formed by a floor, such as an entrance of an underground facility, and walls provided on both side edges of the floor, and is always lying down and standing up in an emergency such as a flood. It is a undulating waterproof door that can dampen the water to be spilled, is bag-like, and is engaged with the floor and the wall in close contact with the floor and the wall when viewed from the front, and can be supplied and exhausted inside A bag body in which an air supply / exhaust port is formed, and a cover lid that is installed on the top of the bag body and is formed of a substantially plate-like floor board having a length in the transverse direction equivalent to the transverse width of the passage. It is characterized by that.

  According to the undulating waterproof door according to the present invention, if the air is supplied from the air supply / exhaust port of the bag body and the inside of the bag body is filled with air, the bag body is brought into close contact with the floor and wall of the passage. Therefore, in an emergency, the water flowing in as a weir can be stopped. In addition, if the air inside the bag body is exhausted at all times, it is covered with a cover installed at the top, so that there is no hindrance to passage of the passage and there is no possibility of damaging the bag body during passage. In addition, when the inflowing water is drained and when the air inside the bag body is exhausted and the bag body is contracted, a cover lid is installed on the top of the bag body. Can be promoted.

The invention according to claim 2 is the undulating waterproof door according to claim 1, characterized in that an air supply / exhaust means is connected to the air supply / exhaust port.
According to the undulating waterproof door according to the present invention, since the air supply / exhaust means is connected to the bag body, the bag body can be freely supplied and exhausted in an emergency and at any time.

According to a third aspect of the present invention, in the undulating waterproof door according to the first or second aspect, a groove is formed across the floor in a range in which the bag body is engaged. It is characterized by having a storage groove capable of storing the body.
According to the undulating waterproof door according to the present invention, the storage groove that crosses the floor is formed, and the bag body is engaged with the floor surface of the storage groove. Since the body is stored, the storage property becomes higher.

The invention according to claim 4 is the undulating waterproof door according to claim 3, wherein the cover has a width in the longitudinal direction perpendicular to the transverse direction of the floor board smaller than the width in the longitudinal direction of the storage groove. And floor flanges having a width equal to the depth of the storage groove are formed downward on both side edges in the longitudinal direction of the floor board.
According to the undulating waterproof door according to the present invention, the floor plate and the floor flange constituting the cover can normally eliminate the step in the storage groove and close the gap. As a result, it is possible to further improve the trafficability at all times. Further, a gap is formed inside the storage groove by the floor flange, and the bag body contracted in this gap can be stored.

  The invention according to claim 5 is the undulating waterproof door according to claim 4, wherein a plurality of the cover lids are formed in the transverse direction, and are joined to the lower surface of the floor plate and the inner surfaces of the two floor flanges, A rib protruding downward is set to be smaller than the width of the floor flange, and is substantially plate-like, joined to the lower end portion of the rib opposite to the upper end portion to be joined to the floor plate, The cross-sectional shape of the surface is a substantially convex curve upward, the width in the longitudinal direction is equal to or less than the width in the longitudinal direction of the floorboard, and the length in the transverse direction is equal to the width in the transverse direction of the floorboard. It is characterized by having a protective plate.

  According to the undulating waterproof door according to the present invention, the rib is formed on the cover, whereby the strength of the cover with respect to the overload is increased during normal passage. In addition, since the bag body comes into contact with the protection plate by providing the protection plate, there is no fear of damaging the bag body with the ribs. Further, when water pressure is applied in an emergency, the bag body is displaced rearward. At this time, the upper portion of the bag body slides on the lower surface of the protective plate, but the protective plate can slide with a reduced resistance because the vertical cross-sectional shape is a substantially convex curve upward.

The invention according to claim 6 is the undulating waterproof door according to any one of claims 3 to 5, wherein the storage groove is a groove in a vertical direction within a range in which the bag body of the wall is engaged. Is provided so that a groove is formed in a U shape when the passage is viewed from the front.
According to the undulating waterproof door according to the present invention, the bag body can be stored in the storage groove even at the portion engaged with the wall of the bag body.

The invention according to a seventh aspect is the undulating waterproof door according to the sixth aspect, wherein the cover is a substantially plate-like wall plate joined upward to both edges of the transverse direction of the floor plate of the cover. And wall flanges projecting to the inner side of the storage groove at both side edges in the longitudinal direction of the wall plate.
According to the undulating waterproof door according to the present invention, the bag body is normally stored in the gap formed by the storage groove and the cover, even in the wall portion. Thereby, a bag body will be in the state completely covered with the cover cover at the time, and while being able to protect a bag body, landscape property can be improved.

According to an eighth aspect of the present invention, in the undulating waterproof door according to the seventh aspect, the cover is formed inside the storage groove when the bag body is contracted or expanded and the cover is moved upward or downward. A guide that is movable in the vertical direction is provided on the wall flange.
According to the undulating waterproof door according to the present invention, when the bag body expands in an emergency, the cover lid installed on the top of the bag body also moves upward, but between the wall flange of the cover lid and the side surface of the storage groove. Since the guide is provided in the case, it can move up and down smoothly.

The invention according to claim 9 is the undulating waterproof door according to any one of claims 4 to 8, characterized in that a danger sign is provided on an outer surface of the floor flange of the cover. .
According to the undulating waterproof door according to the present invention, the undulating waterproof door undulates in an emergency, and passage of the passage is impossible, but a danger is displayed on the outer surface of the floor flange that can be seen from the outside. Can be alerted to. Since the outer surface of the floor flange is normally stored in the storage groove, it can be operated only in an emergency.

  According to this invention, since the member comprised as a waterproof door main body is a bag body expanded by supplying air, the weight reduction of an apparatus can be achieved. Furthermore, since the bag body which is a waterproof door main body can be shrunk | reduced by always exhausting, the undulating waterproof door with high storage property is realizable in a small storage space. In addition, by installing a U-shaped cover on the top of the bag body when the passage is viewed from the front, it can function as a passage at all times and can completely protect the bag body, There is no fear of damaging the bag body, and it is also preferable on the landscape. Since the entire device uses almost no mechanical structure, there is little risk of failure, etc., and it is excellent in maintenance management. Therefore, it is possible to realize a undulating waterproof door that is economically advantageous as a maintenance cost as an apparatus cost.

  1 to 9 show an embodiment according to the present invention. 1 is a plan view, FIG. 2 is a front view in a normal state, and FIG. 3 is a front view in an emergency. FIG. 4 is a cross-sectional view at a normal time, and FIG. 5 is a cross-sectional view at an emergency. 6 and 7 are perspective views from the passage side and from the wall side, respectively. 8 and 9 are perspective views from the passage side and from the wall side in an emergency, respectively.

  As shown in FIGS. 1 to 3, the undulating waterproof door 1 according to the present invention is installed in a passage 4 formed by a floor 2 and walls 3 provided on both side edges 2 a of the floor 2. For example, it is installed at the entrance of underground facilities or underpass roads, etc., and is normally stored inside the floor 2 to secure traffic, and in the event of an emergency such as a flood, a weir is formed to prevent the inflow of water.

  As shown in FIGS. 2, 3, and 5, the undulating waterproof door 1 has an air supply / exhaust port 6 a, and a bag body 6 that dams the inflow water 5 as a dam in an emergency, and the passage 4 in front view. A groove formed in a U-shape in the floor 2 and the wall 3, which is installed in the storage groove 7 for always storing the bag body 6 inside the floor 2 and the wall 3 and the upper portion 6 b of the bag body 6, and is always stored in the storage groove 7 is connected to a cover 8 that closes the upper portion 7a of the belt 7, rubber pressers 9, 10, and 11 that engage the bag 6 with the floor 2 and the wall 3, and an internal 6c of the bag 6 so that air can be supplied to and exhausted from the internal 6c. And a simple air supply / exhaust means 12.

  As shown in FIGS. 5, 8, and 9, when the bag body 6 is made of rubber and the interior 6 c is filled with air in an emergency, the cross-sectional shape in the longitudinal direction A of the passage 4 is substantially circular, and the passage 4 It is formed in a substantially cylindrical shape that is elongated in the transverse direction B. The bag body 6 is engaged with the floor surface 7 b inside the storage groove 7 by rubber pressers 9 and 10. Further, both end portions 6d in the transverse direction B of the bag body 6 are engaged with the wall surface 7c inside the storage groove 7 by the rubber presser 11, and the inside 6c of the bag body 6 is closed.

  The rubber pressers 9, 10, and 11 include a plurality of anchor bolts 9a, 10a, and 11a and press plates 9b, 10b, and 11b that are substantially plate-like and have holes through which the plurality of anchor bolts are inserted.

  As shown in FIGS. 2 and 3, the cover 8 includes a substantially plate-like floor plate 13 and a substantially plate-like wall plate 14 that is joined upward to both edge portions 13 a in the transverse direction B of the floor plate 13. 4 is formed in a U shape when viewed from the front. In the transverse direction B, the length L13 of the floor board 13 and the transverse width W of the passage are set to be equal. 4 and 5, in the longitudinal direction A, the width B13 of the floor plate 13 and the width B14 of the wall plate 14 are larger than the width B7 of the storage groove 7 so that the storage groove 7 can be stored without a gap. Slightly small. In the vertical direction C, the height H14 of the wall plate 14 is set to be greater than the height H6 at which the bag body 6 is engaged with the wall surface 7c. The upper surface 13b of the floor board 13 is formed with minute convex portions and is subjected to roughening. More specifically, a striped steel plate is used for the floor plate 13. Floor flanges 15 are formed downward in the vertical direction C at both side edges 13c in the longitudinal direction A of the floor board 13. The width B15 of the floor flange 15 is set to be equal to the depth H7a of the floor 2 portion of the storage groove 7. Further, as shown in FIG. 5, a danger sign is displayed on the outer surface 15 a of the floor flange 15 on the inflow water 5 side. More specifically, black and yellow stripes are painted. As shown in FIGS. 1, 4, and 5, a rib 16 is formed on the inner side of the floor flange 15 so as to be joined to the inner surface 15 b of the two floor flanges 15 facing each other and the lower surface 13 d of the floor plate 13. A plurality of ribs 16 are provided in the transverse direction B. In the vertical direction C, the width B16 of the rib 16 is set smaller than the width B15 of the floor flange 15. A substantially plate-shaped protective plate 17 is joined to a lower end portion 16b opposite to the upper end portion 16a joined to the floor plate 13 of the rib 16. In the transverse direction B, the length L17 of the protection plate 17 is set equal to the length L13 of the floor plate, and in the longitudinal direction A, the width B17 of the protection plate 17 is set smaller than the length B13 of the floor plate. Yes. Moreover, it has the cross-sectional shape of a substantially convex curve upward in the longitudinal section of the passage 4. In the wall plate 14, wall flanges 18 that protrude inward of the storage groove 7 are formed on both side edges 14 a in the longitudinal direction A. In the transverse direction B, the width B18 of the wall flange 18 is set to be slightly smaller than the depth H7b of the wall 2 portion of the storage groove 7. A guide 19 is provided between the wall flange 18 and the side surface 7d of the storage groove 7 facing each other. The guide 19 includes a plurality of rollers 20 provided on the wall flange 18, and a rail 21 that extends in the vertical direction C on the side surface 7 d of the storage groove 7 and fits the roller 20 movably in the vertical direction C. .

  The storage groove 7 is formed so as to cross the floor 2 and has a length L7 in which the wall plate 14 of the cover 8 can move in the vertical direction C on the wall 3, and is U-shaped when the passage 4 is viewed from the front. Is formed. More specifically, the length L7 is set to be larger than the sum of the undulating height H1 in the emergency of the undulating waterproof door 1 and the height H14 of the wall plate.

  The air supply / exhaust means 12 includes an air supply / exhaust pipe 22, an air supply pipe 23, an exhaust pipe 24, a compressor 25, and a valve 26. One end of the air supply / exhaust pipe 22 is piped inside the floor 2 and is connected to the inside 6 c through the air supply / exhaust port 6 a of the bag 6. The other end of the air supply / exhaust pipe 22 is connected to the floor 2 and the wall 3 and connected to a valve 26. One end of the air supply pipe 23 is connected to the valve 26, and the other end is connected to the compressor 25. One end of the exhaust pipe 24 is connected to the valve 26 and the other end communicates with the atmosphere.

  Next, the operation of the undulating waterproof door 1 of the present invention will be described. 2, 4, 6, and 7 show the state of the undulating waterproof door 1 at all times. The bag body 6 is in a state in which the inside 6 c is evacuated and contracted, and is stored in the storage groove 7. Since the width B13 of the floor plate 13 of the cover 8 is set smaller than the width B17 of the storage groove 7, the cover 8 installed on the upper portion 6b of the bag body 6 is also stored in the storage groove 7. ing. Since the width B15 of the floor flange 15 is equal to the depth H7a of the floor 2 portion of the storage groove 7, the cover 8 is in a state where the tip 15c of the floor flange 15 is in contact with the floor surface 7b inside the storage groove 7. Thus, the height of the floor plate 13 is equal to the floor surface 2b, and the passage can be secured. Since the width B16 of the rib 16 is set to be smaller than the width B15 of the floor flange 15, and the protection plate 17 having a substantially convex cross-sectional shape is joined to the lower end portion 16b of the rib 16 upward, A gap 7e is formed between the protective plate 17 and the floor surface 7b inside the storage groove 7, and the contracted bag body 6 is stored in the gap 7e. On the other hand, the wall 3 of the storage groove 7 also forms a gap 7f between the wall surface 7c of the storage groove 7 and the wall plate 14, and the bag 6 contracted in the gap 7f is stored. Thus, the contracted bag body 6 is stored in the storage groove 7 by the cover lid 8, and the passage 4 is secured by the floor plate 13 of the cover lid 8. Since the upper surface 13b of the floor board 13 is roughened, it serves as an anti-slip when passing over the floor board 13.

  Next, an operation method of the undulating waterproof door 1 when there is a risk of inundation due to flooding or the like will be described. 3, 5, 8 and 9 show the state of the undulating waterproof door 1 in an emergency. First, the valve 26 is opened to the supply side, and the compressor 25 is started. Compressed air is supplied to the interior 6 c of the bag body 6 through the air supply pipe 23 and the air supply / exhaust pipe 22 by the compressor 25. The bag body 6 is sandwiched between the floor surface 7b and the wall surface 7c by the presser plates 9b, 10b, and 11b by the rubber pressers 9 and 10 on the floor surface 7b and the rubber presser 11 on the wall surface 7c. It is tightened by bolts 9a, 10a, 11a. Thereby, the bag body 6 expand | swells in the state closely_contact | adhered and engaged with the floor surface 7b and the wall surface 7c. The inflated bag 6 first comes into contact with the protective plate 17 at the upper part 6b. Further, the expanding bag 6 pushes up the entire cover 8 upward in the vertical direction C. A guide 19 is provided between the wall flange 18 of the cover 8 and the side surface 7d of the storage groove 7 facing each other. For this reason, when the entire cover 8 is moved upward by the inflating bag body 6, the bag body 6 can move smoothly without being overturned from the upper portion 6 b. Further, air supply is performed, and when the inside 6c of the bag body 6 is filled and the cross section A in the longitudinal direction of the bag body 6 becomes substantially circular, the valve 26 is closed. Thereby, the bag body 6 functions as a waterproof door body. In addition, since danger indication is carried out on the outer surface 15a of the inflow water 5 side of the floor lunge 15, it is possible to alert the user that the waterproof door is standing before and after the flooding and during the flooding.

  As shown in FIG. 5, when the undulating waterproof door 1 is submerged, the water pressure P is received by the inflow water 5. Since the cover 8 is constrained in the longitudinal direction A by the side surface 7d of the storage groove 7, only the bag body 6 is displaced by the water pressure P to a position D on the side opposite to the side receiving the water pressure P. At this time, the bag body 6 slides on the lower surface 17a of the protection plate 17. However, since the protection plate 17 has a substantially convex cross-sectional shape upward, it can slide smoothly.

  Next, the case where the flooded state is improved and returned to the normal state will be described. As shown in FIGS. 2 and 3, first, the valve 26 is opened to the exhaust side. Then, the air filled in the interior 6 c of the bag body 6 is exhausted through the air supply / exhaust pipe 22 and the exhaust pipe 24. By this operation, the bag body 6 is gradually contracted, and the cover 8 is moved downward according to the guide 19 and is again in a normal lying state as shown in FIGS. 2, 4, 6 and 7. At this time, since the cover 8 is placed on the upper portion 6 b of the bag body 6, the exhaust of the bag body 6 is promoted by the weight of the cover 8.

  Although the method of using the undulating waterproof door 1 has been described, the rubber bag 6 can function as a waterproof door body that has been conventionally made of steel or the like, so that the weight of the apparatus can be reduced. Further, the cover 8 can always protect the bag body 6 and secure the passage in the floor 2 part, and can also protect the bag body 6 in the wall 3 part, which is preferable in view of the scenery. Since the mechanical structure is only the air supply / exhaust means 12 and the guide 19, there is little risk of failure and the maintenance burden can be reduced. In addition to protecting the above-mentioned bag body and securing a passage at all times, the cover 8 also has an effect of alerting in an emergency and promoting exhaust during exhaust, and is highly functional and reduces equipment costs and maintenance costs. It is an economically advantageous relief waterproof door.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

Although the bag body 6 is made of rubber, any material may be used as long as the inner confidentiality and the water tightness during water immersion are maintained and the material can be expanded and contracted during supply and exhaust. Further, in the cover 8, the floor plate 13 and the wall plate 14 are provided with a floor flange 15 and a wall flange 18, and the floor plate 13 is provided with a rib 16 and a protection plate 17. The structure may be changed. For example, when the overhead load at the time of passing is small, the structure without the ribs 16 may be used. When the protection of the wall 3 is not necessary, the structure without the wall plate 14 may be used. At least the bag body 6 having a function as a waterproof door main body and the floor plate 13 for protecting the upper portion 6b of the bag body 6 may be provided. Further, when the cover 8 is light and the undulating waterproof door 1 is raised and lowered, the cover 21 may be omitted if the cover 8 can be easily moved up and down. Alternatively, the guide 19 may be omitted, and the wall plate 14 of the cover lid 8 may be slid directly inside the storage groove 7. In addition, although the air supply / exhaust means 12 is structured to be piped from under the floor, the present invention is not limited to this and may be a pipe that can supply and exhaust air from the wall 3 side. Moreover, it is good also as the method of providing only the air supply / exhaust port 6a which can be connected from the outside to the bag body 6, and connecting and operating the air supply / exhaust means 12 in an emergency, without taking the permanent structure.
Moreover, although the compressor 25 is proposed as an air supply apparatus, it may be a blower, for example.

It is a top view which shows the undulation type waterproof door of embodiment of this invention. It is a front view in the usual time which shows the undulation type waterproof door of embodiment of this invention. It is a front view at the time of emergency which shows the undulation type waterproof door of embodiment of this invention. It is sectional drawing in the usual time which shows the undulation type waterproof door of embodiment of this invention. It is sectional drawing in the case of an emergency which shows the undulating type waterproof door of embodiment of this invention. It is a perspective view from the channel | path side in the normal time which shows the undulating type waterproof door of embodiment of this invention. It is a perspective view from the wall side in the usual time which shows the undulation type waterproof door of embodiment of this invention. It is a perspective view from the channel | path side in the time of emergency which shows the undulating type waterproof door of embodiment of this invention. It is a perspective view from the wall side in the time of emergency which shows the undulation type waterproof door of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unfolding type waterproof door 2 Floor 3 Wall 4 Passage 6 Bag body 6a Air supply / exhaust port 6b Upper part 6c Inside 7 Storage groove 7b Floor surface 7c Wall surface 8 Cover lid 12 Air supply / exhaust means 13 Floor board 13a Edge edge part 13c Side edge part 13d Lower surface 14 Wall Plate 14a Side edge 15 Floor flange 15a Outer surface 15b Inner surface 16 Rib 16a Upper end portion 16b Lower end portion 17 Protection plate 18 Wall flange 19 Guide A Vertical direction B Transverse direction C Vertical direction W Transverse width B7 Width (storage groove)
H7a depth (storage groove)
B13 width (floor board)
L13 Length (floor board)
B15 width (floor flange)
B16 width (rib)
B17 width (protection plate)
L17 Length (protection plate)

Claims (9)

It is installed in the passage formed by the floor at the entrance of the underground facility and the walls provided on both side edges of the floor. A rugged waterproof door,
A bag-like bag body that is engaged with the floor and the wall in close contact with the floor and the wall when viewed from the front, and is formed with an air supply / exhaust port that can supply and exhaust air inside;
An undulating waterproofing system comprising: a cover formed by a substantially plate-like floor board installed at an upper portion of the bag body and having a length equivalent to a transverse width of the passage in a transverse direction of the passage. door. In the undulating waterproof door according to claim 1,
An undulating waterproof door, characterized in that an air supply / exhaust means is connected to the air supply / exhaust port. In the undulating waterproof door according to claim 1 or 2,
An undulating waterproof door comprising a storage groove capable of storing the bag body by forming a groove that crosses the floor within a range in which the bag body is engaged. In the undulating waterproof door according to claim 3,
The cover cover is set such that a width in a longitudinal direction orthogonal to the transverse direction of the floor board is set smaller than a width in the longitudinal direction of the storage groove, and both side edges of the floor board in the longitudinal direction have the storage groove. A undulating waterproof door characterized in that a floor flange having a width equivalent to the depth is formed downward. In the undulating waterproof door according to claim 4,
A plurality of the cover lids are formed in the transverse direction, joined to the lower surface of the floor plate and the inner surfaces of the two floor flanges, and a rib protruding downward is set to be smaller than the width of the floor flange;
It is substantially plate-like, joined to the lower end of the rib opposite to the upper end joined to the floor plate, and the cross-sectional shape is a substantially convex curve upward in the longitudinal section of the passage, and the width in the longitudinal direction A undulating waterproof door comprising: a protective plate having a width equal to or less than the width of the floor plate in the longitudinal direction and a length in the transverse direction equal to the width in the transverse direction of the floor plate. In the undulating waterproof door according to any one of claims 3 to 5,
The storage groove is a undulation characterized in that a groove is formed in a vertical direction in a range in which the bag body of the wall is engaged, so that a groove is formed in a U shape when the passage is viewed from the front. Waterproof door. In the undulating waterproof door according to claim 6,
The cover includes a substantially plate-like wall plate joined upward to both end portions in the transverse direction of the floor plate of the cover, and inner sides of the storage grooves on both side edges in the longitudinal direction of the wall plate. A undulating waterproof door characterized by comprising a wall flange protruding on the wall. In the undulating waterproof door according to claim 7,
The cover cover is provided with a guide on the wall flange that is movable in a vertical direction inside the storage groove when the bag body is contracted or expanded and the cover cover moves upward or downward. The undulating waterproof door. In the undulating waterproof door according to any one of claims 4 to 8,
A undulating waterproof door, characterized in that a danger sign is provided on the outer surface of the floor flange of the cover.

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