Water shutoff device

Abstract

To be easily available in openings of different widths.SOLUTION: A cut-off device includes a first water stop plate 10 positioned near the center in the lateral width direction and two second water stop plates 20, 20 respectively brought into contact with one surface of the first water stop plate 10 on both of right and left sides, the first water stop plate 10 and the second water stop plates 20, 20 closing an opening in a water-tight manner, in which at least one second water stop plate 20 of the two second water stop plates 20, 20 is water-tightly brought into contact with the first water stop plate 10 by securing an overlap margin W for movement in the lateral width direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a water stop device that closes the openings of buildings and subways with a substantially plate-shaped water stop body during water level rise to prevent water intrusion.

Background Art

[0002] When water level rises due to typhoons or heavy rainstorms intrudes into the openings of buildings and subways, there is a risk of causing significant damage due to flooding. Therefore, in preparation for such situations, a water stop plate is stored in advance near the openings of buildings and subways, etc. When water level rise occurs, this water stop plate is fixed to the columns on both sides that form the opening to prevent water intrusion, and such a device has been conventionally known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the lateral width dimension of the opening varies depending on the use of the passage communicating with the opening and the like. For this reason, for one building or subway, etc., there may be openings with multiple types of lateral width dimensions. Therefore, the above conventional water stop device orders the water stop plate according to the lateral width dimension of the opening. For this reason, there is room for improvement, such as taking a long time for delivery, being difficult to change the dimensions after ordering, and the overall weight increasing and the transportability decreasing when the lateral width dimension becomes large.

Means for Solving the Problems

[0005] In view of such problems, one aspect of the present invention has the following configuration. A water-stopping device comprising a first water-stopping plate located near the center in the width direction, and two second water-stopping plates that contact one side of the first water-stopping plate on both the left and right sides, wherein the opening is watertightly closed by these first and second water-stopping plates, wherein at least one of the two second water-stopping plates has an overlap that allows it to move in the width direction relative to the first water-stopping plate, and contacts it watertightly. Of the first water-stopping plate and the second water-stopping plate, at least one of the water-stopping plates has a flat plate portion formed on one side in a flat shape, and a projection portion that protrudes from the upper or lower end of the one side in the width direction, and is configured to be stackable with the one side facing the other. A water-stopping device characterized by having the following features. Furthermore, one aspect of the present invention comprises the following configuration. A water-sealing device comprising a first water-sealing plate located near the center in the width direction, and two second water-sealing plates that contact one side of the first water-sealing plate on both the left and right sides, respectively, wherein the opening is watertightly closed by the first water-sealing plate and the second water-sealing plates, wherein at least one of the two second water-sealing plates is provided with a fitting and fixing member that overlaps with the first water-sealing plate to allow for movement in the width direction, is watertightly in contact with the first water-sealing plate, and fits into the first water-sealing plate and the second water-sealing plate to prevent the first water-sealing plate and the second water-sealing plate from separating in the thickness direction. [Effects of the Invention]

[0006] As described above, the present invention is configured to easily accommodate cases where the width of the opening differs. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing an example of a water-stopping device according to the present invention. [Figure 2] This is a plan view of the water-stopping device. [Figure 3] This is a disassembled perspective view of the water-stopping device. [Figure 4] This is a longitudinal cross-section along the line (IV)-(IV) in Figure 1. [Figure 5] This diagram shows the installation of the first water-stopping plate in the same longitudinal section. [Figure 6] This diagram shows the installation of the second water-stopping plate and the fitting and fixing member in the same cross-section. [Figure 7] The diagrams (a) and (b) sequentially show how the first water-stopping plates are stacked. [Figure 8] Figures (a) and (b) sequentially show how the first water-stopping plates of different sizes are stacked on top of each other. [Figure 9] The diagrams (a) and (b) sequentially show how the first and second water-stopping plates are superimposed. [Modes for carrying out the invention]

[0008] Next, embodiments of the present invention will be described in detail with reference to the drawings. In the following explanation, "upstream" refers to the upstream side of the assumed water flow. In the illustrated example, the outdoor side of the structure on which the water-stopping device 1 is installed is the upstream side, and the indoor side of the structure is the downstream side. Alternatively, the upstream side may be the indoor side and the downstream side the outdoor side.

[0009] The water-stopping device 1 watertightly closes the opening between two support columns X, X, which are erected at intervals in the lateral direction, using a first water-stopping plate 10 and second water-stopping plates 20, 20. The water-stopping device 1 comprises a first water-stopping plate 10 located near the center in the width direction of the opening, two second water-stopping plates 20, 20 that contact one side (the downstream side in the illustrated example) of the first water-stopping plate 10 on both sides, and a fitting and fixing member 30 that fits into the first water-stopping plate 10 and the second water-stopping plates 20, 20 (see Figures 1 and 2).

[0010] The support columns X constitute the left and right sides of the opening of the structure to which the water-stopping device 1 is installed. Each support column X is formed in a columnar shape (rectangular tube shape in the illustrated example) extending upward from the lower fixed surface G, for example, using a hard metal material. Each support column X is provided with an upper engaging portion x1 and a lower engaging portion x2 (see Figure 3) on the opening-side surface. These upper engaging portion x1 and lower engaging portion x2 engage with an upper engaging portion 24 and a lower engaging portion 25, respectively, which will be described later.

[0011] Each of the upper engaged portion x1 and the lower engaged portion x2 is constructed as a cylindrical pin made of a hard metal material. The upper engaged portion x1 protrudes inward (towards the center of the opening) between the left and right support columns X, X on the upper side of the support column X. The lower engaging portion x2 protrudes inward (towards the center of the opening) between the left and right supporting columns X, X, below the upper engaging portion x1 on the supporting column X.

[0012] In FIG. 2, reference numeral x3 exemplifies a door body of an automatic door that opens and closes an opening.

[0013] The first water stop plate 10 is detachably fixed to the immovable surface G on the lower side (for example, the ground, floor surface, lower frame, etc.) by a detachable member 19. Specifically, this first water stop plate 10 integrally includes a first water stop plate main body 11 that is substantially upright, two longitudinal waterproof members 12, 12 that protrude upstream at both left and right ends of the first water stop plate main body 11 and extend continuously in the vertical direction, and a lateral waterproof member 13 that protrudes downward from the first water stop plate main body 11 and extends continuously in the lateral direction.

[0014] The first water stop plate main body 11 has a substantially U-shaped side view, having a flat plate portion 11a that is rectangular plate-shaped in front view, an upper protruding piece portion 11b that is bent downstream at the upper end side of this flat plate portion, and a lower protruding piece portion 11c that is bent downstream at the lower end side of the flat plate portion, and is formed from, for example, a hard metal plate material.

[0015] A vertical through hole is formed in the lower protruding piece portion 11c, and the detachable member 19 is rotatably inserted into this through hole.

[0016] The detachable member 19 is formed by fixing a grip portion that can be rotated by hand to the rear end side of a bolt having a male screw portion at the tip side. This detachable member 19 penetrates the lower protruding piece portion 11c and the lateral waterproof member 13 downward, and its lower end side is screwed into and tightened by a female screw hole g1 provided in the immovable surface G.

[0017] The longitudinal waterproof member 12 is formed in a long shape extending in the vertical direction of the first water stop plate main body 11 from an elastic material such as rubber or an elastomer resin. This longitudinal waterproof member 12 is fixed to the upstream side surface of the first water stop plate main body 11 and straddles the flat plate portion 11a and the lateral waterproof member 13 in the vertical direction. The means for fixing the longitudinal waterproof member 12 to the first water stop plate main body 11 may be adhesion using an adhesive material (for example, an adhesive or double-sided tape, etc.), fitting via a bracket, etc.

[0018] The lateral watertight material 13 is formed in a long shape from an elastic material such as rubber or elastomer resin, and is continuous along the entire length from left to right on the lower surface of the lower projection portion 11c. The means for fixing this lateral watertight material 13 to the lower projection portion 11c may be bonding using an adhesive (for example, adhesive or double-sided tape) or fitting via a bracket or the like.

[0019] The two second water-stopping plates 20, 20 are adjacent to each other with a gap between them in the left-right direction, and are configured symmetrically. Each second water-stopping plate 20 integrally comprises a nearly upright second water-stopping plate body 21, a vertical water-tight material 22 that protrudes downstream from one end of the second water-stopping plate body 21 in the lateral direction and extends in a long, continuous manner vertically, a horizontal water-tight material 23 that protrudes downward from the second water-stopping plate body 21 and extends in a long, continuous manner horizontally, and an upper engaging portion 24 and a lower engaging portion 25 that protrude from one end of the second water-stopping plate body 21 in the lateral direction toward the corresponding support column X.

[0020] Each second water-stopping plate 20 is in watertight contact with the upstream side of the first water-stopping plate 10 in the vertical direction, with an overlap W secured (see Figure 2). The overlap W is the width dimension in which the first water-stopping plate 10 and the second water-stopping plate 20 overlap. Each second water-stopping plate 20 is movable in the left-right direction within the overlap W range when it is not engaged with the support column X by the upper engaging portion 24 and the lower engaging portion 25.

[0021] The second water-stopping plate body 21 has a rectangular plate-shaped flat portion 21a in front view and a projection portion 21b that is bent upstream at the lower end of the flat portion 21a, and has a roughly L-shape in side view, and is formed from, for example, a hard metal plate.

[0022] The vertical watertight material 22 is formed from an elastic material such as rubber or elastomer resin, and is elongated in shape extending vertically over the second watertight plate body 21. This vertical watertight material 22 is fixed to one end in the lateral direction on the downstream side of the second waterstop body 21 and spans both the second waterstop body 21 and the lateral watertight material 23 in the vertical direction. As shown in the example in Figure 2, the vertical watertight material 22 is fixed to the second waterstop body 21 by fitting via a bracket or the like, but it is also possible to use adhesive (for example, glue or double-sided tape) for bonding.

[0023] The lateral watertight material 23 is formed in an elongated shape from an elastic material such as rubber or elastomer resin, and extends continuously in an elongated shape along the entire length from left to right on the lower surface of the projection portion 21b. In particular, the lateral watertight material 23 in the illustrated example is fixed towards the downstream side on the lower surface of the projection portion 21b (see Figure 4). The means for fixing the lateral watertight material 23 to the projection portion 21b may be bonding using an adhesive (for example, adhesive or double-sided tape) or fitting via a bracket or the like.

[0024] The upper engaging portion 24 is located on the upper side of the downstream side of the second water-stopping plate body 21 and protrudes downstream. This upper engaging portion 24 is configured in a substantially concave shape so as to approach and engage with the upper engaged portion x1 of the support column X from an oblique upward direction (see Figure 6). The engaged state of this upper engaging portion 24 can be released by manual operation of a disengagement mechanism (not shown).

[0025] The lower engaging portion 25 is located on the lower side of the downstream side of the second water-stopping plate body 21 and protrudes downstream. This lower engaging portion 25 is configured in a substantially concave shape so as to approach and engage with the lower engaged portion x2 of the support column X from an oblique upward direction (see Figure 6). When the lower engaging portion 25 is engaged, it can be disengaged by moving in the opposite direction (obliquely upward towards the upstream side).

[0026] The fitting and fixing member 30 is formed by bending a hard metal plate into an inverted concave shape in its longitudinal cross-section, and is continuous in a long length in the lateral direction. This fitting and fixing member 30 has a length that spans from one second water-stopping plate 20 to the other second water-stopping plate 20, and fits over the first water-stopping plate 10 and a portion of the second water-stopping plates 20, 20 on both sides from above. This fitting structure prevents each first water-stopping plate 10 and second water-stopping plate 20 from separating in the thickness direction.

[0027] <Installation Procedure> Next, the procedure for installing the first water-stopping plate 10 and the second water-stopping plate 20, as described above, between the two support columns X, X will be explained. First, the first water-stopping plate 10 is placed approximately in the center between the left and right support columns X, X on the immovable surface G, and the male screw portion at the tip of the detachable member 19 is screwed into the female screw hole g1 on the immovable surface G and tightened (see Figure 5). As a result, the lateral watertight material 13 at the lower end of the first watertight plate 10 is pressed against the immovable surface G, maintaining its watertightness.

[0028] Next, the left and right second water-stopping plates 20 are brought closer to the space between the support column X and the first water-stopping plate 10. Then, the upper engaging portion 24 and the lower engaging portion 25 are brought closer to the upper engaging portion x1 and the lower engaging portion x2 of the support column X from the upstream side and fitted together (see Figure 6).

[0029] As a result, the vertical watertight material 22 of each second watertight plate 20 is pressed against the support column X to maintain watertightness, and the horizontal watertight material 23 of each second watertight plate 20 is pressed against the immovable surface G to maintain watertightness.

[0030] Next, the fitting and fixing member 30 is fitted onto the first water-stopping plate 10 and the second water-stopping plates 20, 20 from above, so as to cover them. The fitting and fixing member 30 is positioned to straddle the right end of the left second water-stopping plate 20 and the left end of the right second water-stopping plate 20. As a result, the upper bottom surface of the fitting and fixing member 30 contacts or is close to the upper ends of the first water-stopping plate 10 and the second water-stopping plate 20, the upstream inner surface of the fitting and fixing member 30 contacts or is close to the upstream side surface of the second water-stopping plate 20, and the downstream inner surface of the fitting and fixing member 30 contacts or is close to the tip of the upper projection 11b of the first water-stopping plate 10 (see Figure 4).

[0031] In this way, the opening between the left and right support columns X, X is watertightly closed by the first watertight plate 10 and the second watertight plates 20, 20. In this closed state, if the upstream side is flooded, the second water-stopping plate 20 will bend downstream due to the water pressure and be pressed further against the first water-stopping plate 10. Moreover, the space between the first water-stopping plate 10 and the second water-stopping plate 20 is held in place by the fitting and fixing member 30 so that they do not separate. Therefore, it is possible to prevent gaps from forming between the second water-stopping plate 20 and the first water-stopping plate 10 that could cause water leakage.

[0032] Furthermore, each first water-stopping plate 10 is movable in the lateral direction within the range of the overlap W when it is not engaged with the support column X. Therefore, for example, if the width between the left and right support columns X, X that are to be installed is different, each first water-stopping plate 10 can be moved in the lateral direction while maintaining watertightness with the second water-stopping plate 20, so that each first water-stopping plate 10 can be engaged with support columns X that are in different lateral positions. In other words, it can easily handle cases where the width of the opening to be sealed differs.

[0033] Next, we will explain in detail the features of storing the first water-stopping plate 10 and the second water-stopping plate 20 in the above configuration. The first water-stopping plate body 11 of the first water-stopping plate 10 has a flat plate portion 11a with one surface formed flat, an upper projection portion 11b that protrudes from the upper end of the one surface in the width direction, and a lower projection portion 11c that protrudes from the lower end of the one surface in the width direction, and is configured to be able to be overlapped with the one surface facing the other.

[0034] Furthermore, the second water-stopping plate body 21 of the second water-stopping plate 20 has a flat plate portion 21a formed on one side in a flat shape, and a protruding piece portion 21b that extends in the width direction and protrudes from the lower end side of the one side, and is configured to be able to be overlapped with the one side facing the other.

[0035] Therefore, for example, if there are multiple first water-stopping plates 10 corresponding to multiple water-stopping devices 1 installed in multiple locations, two of these first water-stopping plates 10 can be superimposed as shown in Figures 7(a) and 7(b).

[0036] To explain in detail, the first water-stopping plate 10 is placed on a fixed surface or the like on the lower side with its upper projection 11b and lower projection 11c facing upward. The other first water-stopping plate 10 is superimposed on the lower first water-stopping plate 10 with its upper projection 11b and lower projection 11c facing upward.

[0037] In this overlapping state, the upper projection portion 11b of one first water-stopping plate 10 and the upper projection portion 11b of the other first water-stopping plate 10 each abut their ends against the flat plate portion 11a and overlap with the lower projection portion 11c. Therefore, as shown in Figure 7(b), a compact and stable storage configuration can be obtained.

[0038] Furthermore, for example, if there are multiple first water-stopping plates 10, 10', 10'' of different heights corresponding to multiple water-stopping devices 1 installed in multiple locations, these first water-stopping plates 10, 10', 10'' can be superimposed as shown in Figure 8.

[0039] More specifically, the first water-stopping plate 10 is placed on a fixed surface or the like on the lower side with its upper projection 11b and lower projection 11c facing upward.

[0040] Next, the first water-stopping plate 10' is placed on the flat plate portion 11a of the lower first water-stopping plate 10, with its upper projection portion 11b and lower projection portion 11c facing upward.

[0041] Furthermore, the first water-stopping plate 10" is superimposed on the upper side of the first water-stopping plate 10' by abutting the tip of the upper projection 11b against the flat plate portion 11a of the first water-stopping plate 10" and abutting the tip of the lower projection 11c against the flat plate portion 11a of the first water-stopping plate 10" (see Figure 8(b)). In this superimposed state, the tip of the upper projection 11b of the first water-stopping plate 10' is close to or in contact with the flat plate portion 11a of the first water-stopping plate 10".

[0042] Therefore, as shown in Figure 8(b), a compact and stable storage configuration can be obtained for the first water-stopping plates 10, 10', and 10'' with different height dimensions.

[0043] Furthermore, for example, the first water-stopping plate 10 and the second water-stopping plate 20 can be superimposed as shown in Figure 9.

[0044] More specifically, the first water-stopping plate 10 is placed on a fixed surface or the like on the lower side with its upper projection 11b and lower projection 11c facing upward (see Figure 9(a)).

[0045] The second water-stopping plate 20 is positioned with its protruding portion 21b facing downwards and its flat portion 21a facing the flat portion 11a, and is superimposed on the upper side of the first water-stopping plate 10.

[0046] In this overlapping state, the tip of the upper projection 11b of the first water-stopping plate 10 abuts against the flat plate portion 21a of the second water-stopping plate 20. Furthermore, the projection 21b of the second water-stopping plate 20 is positioned close to or in contact with the flat plate portion 11a of the first water-stopping plate 10.

[0047] Therefore, as shown in Figure 9(b), a compact and stable storage configuration can be obtained for the first water-stopping plate 10 and the second water-stopping plate 20.

[0048] <Variation> According to the above embodiment, in one preferred example, the first water-stopping plate 10 is provided downstream of the left and right second water-stopping plates 20, 20. However, in other examples, the first water-stopping plate 10 is provided upstream of the left and right second water-stopping plates 20, 20, or the first water-stopping plate 10 is provided both upstream and downstream of the second water-stopping plates 20, 20.

[0049] According to the above embodiment, the fitting and fixing member 30 is formed to span the length of the left and right second water-stopping plates 20, 20. However, as another example of the fitting and fixing member 30, it is also possible to configure it as two parts: one that spans one second water-stopping plate 20 and the first water-stopping plate 10, and the other that spans the other second water-stopping plate 20 and the first water-stopping plate 10.

[0050] According to the above embodiment, the detachable member 19 is screw-connected to the immovable surface G. However, as another example of this detachable member, it is also possible to connect it to the immovable surface G by a detachable connection means other than screw connection (for example, a magnet).

[0051] Furthermore, in the above embodiment, the vertical watertight material 12 between the first watertight plate 10 and the second watertight plate 20 is integrally provided with respect to the first watertight plate 10. However, in other examples, this vertical watertight material may not be provided with respect to the first watertight plate 10 but may be integrally provided with respect to the second watertight plate 20, or it may be provided with this vertical watertight material on both the first watertight plate 10 and the second watertight plate 20.

[0052] Furthermore, in the above embodiment, the second water-stopping plate 20 is provided with a projection 21b only on its lower end. However, in other examples of the second water-stopping plate 20, it is also possible to provide similar projections on both the upper and lower ends.

[0053] Furthermore, in the above embodiment, the first water-stopping plate 10 and the second water-stopping plates 20, 20 on both sides are formed to approximately the same height. However, in other examples besides the illustrated example, the fitting and fixing member 30 may be omitted, and the height of the first water-stopping plate 10 may be made larger than that of the second water-stopping plates 20, 20 on both sides. In this way, when storing the equipment as shown in Figure 9, it becomes possible to overlap and house the second water-stopping plates 20, 20 on both sides inside the first water-stopping plate 10.

[0054] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate without altering the essence of the invention.

[0055] <Summary> As described above, the above embodiment discloses the following invention. (1) A water-sealing device comprising a first water-sealing plate located near the center in the width direction, and two second water-sealing plates that contact one side of the first water-sealing plate on both the left and right sides, respectively, wherein the opening is watertightly closed by the first water-sealing plate and the second water-sealing plates, characterized in that at least one of the two second water-sealing plates is in watertight contact with the first water-sealing plate with an overlapping allowance to allow movement in the width direction. (See Figures 1 to 6). (2) The water-stopping device according to (1) (see Figure 4), characterized in that the first water-stopping plate and the second water-stopping plate are in watertight contact in the vertical direction via a vertical watertight material. (3) The water-stopping device according to (1) or (2) (see Figure 5), characterized in that the first water-stopping plate is detachably fastened to the lower immovable surface by a detachable member. (4) The water-stopping device according to any one of (1) to (3) (see Figure 2), characterized in that the second water-stopping plate is in contact with the first water-stopping plate from the upstream side in the expected direction of water flow. (5) The water-stopping device according to any one of (1) to (4) (see Figures 7 to 9), characterized in that at least one of the first water-stopping plate and the second water-stopping plate has a flat plate portion formed on one side in a flat shape and a projection portion that protrudes from the upper or lower end of the one side in the width direction, and is configured to be able to be superimposed with the one side facing the other. (6) A water-stopping device according to any one of (1) to (5) (see Figures 4 and 6), characterized in that two support columns are erected on both sides of two adjacent second water-stopping plates, spaced apart in the lateral direction, and an upper engaging portion and a lower engaging portion are provided on the upper and lower sides of the support columns, respectively, so as to protrude inward between the left and right support columns, and an upper engaging portion and a lower engaging portion are provided on the upper and lower sides of the second water-stopping plate, respectively, so as to engage with the upper engaging portion and the lower engaging portion. (7) A water-stopping device according to any one of (1) to (6) (see Figure 4), characterized in that a fitting and fixing member is provided which fits into the first water-stopping plate and the second water-stopping plate and prevents the first water-stopping plate and the second water-stopping plate from separating in the thickness direction. (8) The water-stopping device according to (7) (see Figures 1 and 2), characterized in that the fitting and fixing member is continuous so as to span across the two second water-stopping plates in the lateral direction.

[0056] Furthermore, the above embodiment also discloses an invention that requires only the following constituent elements. In other words, this invention relates to a water-stopping plate erected to intersect with the flow of water, characterized in that it has a flat plate portion with one surface formed flat, and a projection portion that extends in the width direction from the upper or lower end of the one surface, and is configured to be stackable with the one surface facing the other (see Figures 3 and 7 to 9). According to this invention, the structure in which the flat plate portion is reinforced by the protruding portion can suppress deflection due to water pressure, etc., and when storing multiple units, they can be stacked with one side facing the other, resulting in good storage efficiency. [Explanation of Symbols]

[0057] 1: Water stop device 10:First water stop plate 12: Vertical watertight material 13: Lateral watertight material 19: Detachable parts 20:Second water stop plate 22: Vertical watertight material 23: Lateral watertight material 24: Upper side fastening part 25: Lower side fastening part 30: Fitting fixed parts W:Shige Nayo X: Pillar x1: Upper fastening part x2: Lower side fastening part

Claims

1. A water-stopping device comprising a first water-stopping plate located near the center in the width direction, and two second water-stopping plates that contact one side of the first water-stopping plate on both the left and right sides, wherein the opening is watertightly closed by these first and second water-stopping plates, Of the two second water-stopping plates, at least one of the second water-stopping plates is in watertight contact with the first water-stopping plate, with an overlapping allowance to allow movement in the lateral direction. A water-stopping device characterized in that at least one of the first water-stopping plate and the second water-stopping plate has a flat plate portion formed on one side in a flat shape and a projection portion that protrudes from the upper or lower end of the one side in the width direction, and is configured to be able to be overlapped with the one side facing the other.

2. A water-stopping device comprising a first water-stopping plate located near the center in the width direction, and two second water-stopping plates that are in contact with one surface of the first water-stopping plate on both the left and right sides, wherein the opening is watertightly closed by the first water-stopping plate and the second water-stopping plates, Of the two second water-stopping plates, at least one of the second water-stopping plates is in watertight contact with the first water-stopping plate, with an overlapping allowance to allow movement in the lateral direction. A water-stopping device characterized by having a fitting and fixing member that fits into the first water-stopping plate and the second water-stopping plate, preventing the first water-stopping plate and the second water-stopping plate from separating in the thickness direction.

3. Two support columns are erected on both sides of the two adjacent second water-stopping plates, spaced apart in the lateral direction. The upper and lower sides of the support column are provided with an upper engaging portion and a lower engaging portion, respectively, that protrude inward between the left and right support columns, and the upper and lower sides of the second water-stopping plate are provided with, respectively, The water-stopping device according to claim 1, characterized in that it is provided with an upper engaging portion and a lower engaging portion that engage with the upper engaging portion and the lower engaging portion.

4. The water-stopping device according to claim 2, characterized in that the fitting and fixing member is continuous with respect to the two second water-stopping plates in the lateral direction.

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