Water shutoff device

Abstract

This prevents a decrease in water-stopping performance due to the bending of adjacent water-stopping bodies above and below. [Solution] The water-stopping device comprises a plurality of water-stopping bodies 10 stacked vertically intersecting the expected water flow direction, support columns 30 supporting the plurality of water-stopping bodies 10 on both sides in the width direction, and a movable engaging part 60 provided on one of the vertically adjacent water-stopping bodies 10. The movable engaging part 60 moves between a deflection suppression position, where it protrudes from one water-stopping body side to the other water-stopping body side to suppress the deflection of the one water-stopping body downstream relative to the other water-stopping body, and a storage position, where it is returned to the one water-stopping body side.

Description

[Technical Field]

[0001] The present invention relates to a water stop device that blocks intrusion of water by closing an opening of a building or an underpass with a substantially plate-shaped water stop body when water level rises. [Background Art]

[0002] When increased water levels caused by typhoons, torrential rain or the like intrude into openings of buildings or underpasses, there is a risk of causing enormous damage due to flooding. In preparation for such a situation, a conventional configuration is known, in which support posts are erected in advance on both sides of an opening of a building, an underpass or the like, a plate-shaped water stop body is stored in the vicinity of the support posts, and when water level rise occurs, a plurality of water stop bodies are fixed to the support posts on both sides and stacked to block water intrusion (see Patent Document 1). [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2023-179156 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] However, according to the above configuration, there is a possibility that the amount of deflection when subjected to water pressure differs between the upper water stop body and the lower water stop body. In such a case, a gap is formed between the upper water stop body and the lower water stop body, and water passes through this gap, which may impair the water stopping performance. [Means for Solving the Problem]

[0005] In view of such problems, one aspect of the present invention has the following configuration. A water-stopping device comprising: multiple water-stopping bodies stacked vertically intersecting the expected direction of water flow; support columns supporting the multiple water-stopping bodies on both sides in the width direction; and a movable engaging portion provided on one of the vertically adjacent water-stopping bodies, wherein the movable engaging portion moves between a deflection suppression position, where it protrudes from one water-stopping body side to the other water-stopping body side to suppress the deflection of one water-stopping body downstream relative to the other water-stopping body, and a storage position, where it is returned to the one water-stopping body side. [Effects of the Invention]

[0006] As described above, the present invention is configured in such a way that it can prevent a decrease in water-stopping performance due to the deflection of adjacent water-stopping bodies above and below. [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 perspective view of the main components, showing an example of a locking device. [Figure 3] This is a perspective view of a key part showing an example of a water-stopping device at the bottom. [Figure 4] This is a perspective view of a key part showing an example of a stackable water-stopping structure (additional water-stopping structure). [Figure 5] This is a perspective view of the main parts showing the water stopper with the cremone handle removed. [Figure 6] This is a perspective view of the main part showing the movable engagement part detached from the water-stopping body. [Figure 7] This is a perspective view of the left and right support columns and the lower frame, seen from the upstream side. [Figure 8] This is a perspective view showing a magnified view of the main parts in Figure 7. [Figure 9] This is an enlarged perspective view of the main part of the lower frame. [Figure 10] (a) to (c) are side views sequentially showing how the water-stopping bodies are attached to the support columns and lower frames, with some of the components constituting the support columns omitted. [Figure 11] This diagram shows the engagement relationship between the cremone handle and the lower frame, viewed from the upstream side. [Figure 12] This diagram shows the upper and lower main body plates and the movable engagement part, etc., viewed from the side. (a) shows the movable engagement part in the retracted position, and (b) shows the movable engagement part in the deflection suppression position. [Figure 13] This diagram, viewed from the side, omits some components to show the relationship between the water-stopping body and the lower frame, as well as the relationship between the upper and lower water-stopping bodies. [Figure 14] This is a perspective view of the main part showing how the adjustment tool is used. [Figure 15] (a) is an oblique view of the adjustment device viewed from the right, and (b) is a perspective view of the same adjustment device viewed from the left. [Figure 16] This diagram shows another example of the water-stopping device according to the present invention, with one of the support columns omitted, and the engagement portion between the cremone handle and the lower frame viewed from the side. [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 description, "upstream side" refers to the upstream side in the assumed direction of water flow, and "downstream side" refers to the downstream side in the assumed direction of water flow, which is the opposite direction to the upstream side. In this embodiment, it is assumed that water flows from the outdoor side to the indoor side.

[0009] The water-stopping device A comprises a plurality of water-stopping bodies 10, 20, 20' stacked so as to intersect the expected direction of water flow, support columns 30, 30 that support the water-stopping bodies 10, 20, 20' on both sides in the width direction, and a lower frame 40 that receives the lowest ends of the plurality of water-stopping bodies 10, 20, 20' from below.

[0010] Of the multiple water-stopping bodies 10, 20, 20', the lowest water-stopping body 10 is pressed against the support columns 30, 30 on both sides and the downstream rising surface 42 of the lower frame 40 (see Figure 13). Furthermore, the water-stopping bodies 20 and 20' function as additional water-stopping bodies that are sequentially stacked on top of the water-stopping body 10.

[0011] The lowermost water stop body 10 comprises: a horizontally long rectangular main body plate 11; lower engaging projections 12 (see FIGS. 2 and 3) that project outward in the lateral width direction from the lower end side of each side portion of the main body plate 11; a locking device 13 that locks the main body plate 11 to respective support posts on both left and right sides; and a gremon handle 51 that constitutes a pressing mechanism 50. Further, the water stop body 10 comprises: vertical watertight members 14 that are sandwiched between the water stop body 10 and respective support posts 30 and elastically contract; and a horizontal watertight member 15 that is sandwiched between the water stop body 10 and a downstream rising surface 42 of a lower frame 40 and elastically contracts (see FIG. 3).

[0012] The main body plate 11 is formed of a hard material such as metal into a horizontally long rectangular shape, and one end side and the other end side in the longitudinal direction thereof overlap with the upstream side surface of the support post 30, respectively. According to the illustrated example, the main body plate 11 is composed of a pultruded hollow horizontally long rectangular member, and members covering both side ends of this member, etc.

[0013] One lower engaging projection 12 is provided for each side portion of the main body plate 11 so as to project outward in the lateral width direction from the lower end side of each of the left and right side portions of the main body plate 11. That is, one lower engaging projection 12 is provided on the lower end side of each side portion of the main body plate 11, no projecting member or the like is provided above the lower engaging projection 12 on each of the side portions, and the upper side of each of the side portions is formed in a substantially flat shape (see FIG. 3). Each lower engaging projection 12 has a rollable roller-shaped tip end, and engages with an engaged portion 32a (see FIG. 2) of a support post 30 described later from the upstream side.

[0014] The locking device 13 locks the water stop body 10 to the support posts 30 on both the left and right sides in a state where the water stop body 10 is pressed against the support posts 30, 30 on both sides, and the vertical watertight members 14, 14 on both sides of the water stop body 10 are contracted, thereby maintaining the contracted state of each vertical watertight member 14. The locking device 13 is respectively provided on the left and right end sides near the upper end of the upstream side surface of the main body plate 11. Each locking device 13 comprises a horizontally oriented locking / unlocking rod 13a and a holding part 13b that holds the locking / unlocking rod 13a so that it slides from side to side, and is configured to extend and retract laterally by manual operation. The locking / unlocking rod 13a that protrudes laterally engages with and disengages from the support column 10.

[0015] The vertical watertight material 14 is attached to the left and right ends of the downstream surface of the main body plate 11, extending vertically. Each vertical watertight material 14 is formed from an elastic material such as rubber or elastomer resin, is formed in a long shape, and is provided to extend continuously over substantially the entire length of the main body plate 11 in the vertical direction. This vertical watertight material 14 protrudes downstream from the main plate 11. The tip end of this vertical watertight material 14 is formed in a convex cross-section with the convex portion facing downstream. The means for attaching this vertical watertight material 14 to the main body plate 11 can be fitting, adhesive, or the like.

[0016] The lateral watertight material 15 is attached to the lower end of the downstream surface of the main body plate 11, extending in the lateral direction, so as the watertight body 10 is pushed downstream by the pressing mechanism 50, it is sandwiched between the watertight body 10 and the downstream rising surface 42 of the lower frame 40 and elastically contracts. This lateral watertight material 15 is made of the same material as the longitudinal watertight material 14 described above, and has a convex longitudinal cross-section with the convex portion facing downstream, which extends continuously over approximately the entire length in the lateral direction of the main plate 11. The means for attaching this lateral watertight material 15 to the main body plate 11 can be fitting, adhesive, or the like.

[0017] The lower end of each vertical watertight material 14 is in watertight contact with the lateral end of the horizontal watertight material 15. That is, in the example shown in Figure 3, the lower end of the vertical watertight material 14 is in watertight contact with the upper surface of the horizontal watertight material 15 at the lateral end of the horizontal watertight material 15.

[0018] Furthermore, multiple legs 16 are provided at intervals in the lateral direction at the lower end of the water-stopping body 10 (see Figure 3). The leg portion 16 is formed in a roughly cylindrical shape from rubber, hard resin material, or the like, and protrudes downward from the lower end of the water-stopping body 10. These legs 16 come into contact with the bottom surface 41 of the lower frame 40 when the water-stopping body 10 is placed on the lower frame 40 (see Figure 13).

[0019] The pressing mechanism 50 comprises a cremone handle 51 rotatably supported on the upstream side of the water-stopping body 10, and a receiving portion provided on the lower, immovable portion. In the illustrated example, the receiving portion is the upstream rising surface 43 of the lower frame 40. This pressing mechanism 50, when the cremone handle 51 is rotated, pushes the water-stopping body 10 downstream and presses it against the upstream rising surface 43 in a watertight manner.

[0020] The cremone handle 51 is formed in a substantially rod shape, having a rotating operating portion 51a at one end and an engaging portion 51b at the other end. The cremone handle 51 is rotatably supported by a bearing portion 52, such that the axis of rotation between the rotating operating portion 51a and the engaging portion 51b is oriented in the thickness direction of the main body plate 11. Then, the cremone handle 51 rotates when the rotation operating part 51a is operated, engaging and disengaging the engaging part 51b with the upstream rising surface 43 (receiving part) of the lower frame 40.

[0021] The engaging portion 51b has a tapered outer surface at its tip, and by sliding this inclined surface against the upstream rising surface 43 (receiving portion) of the lower frame 40, the rotational force from the cremone handle 51 is converted into a downstream force.

[0022] The bearing portion 52 is fastened to the upstream side of the water-stopping body by fasteners 54 (for example, screws, bolts, rivets, etc.) via one or more protrusion adjustment spacers 53. With this configuration, the amount by which the cremone handle 51 protrudes from the main plate 11 can be adjusted by appropriately adjusting the number of protrusion adjustment spacers 53.

[0023] Furthermore, water-stopping bodies 20 (additional water-stopping bodies) are stacked on the main plate 21 of the above configuration. The water-stopping body 20 comprises a horizontally elongated rectangular main plate 21, lower engaging projections 22 (see Figure 4) that protrude to the left and right sides from the lower side of the main plate 21, upper engaging projections 23 that protrude to the left and right sides from the upper side of the main plate 21, a locking device 13 having the same configuration as that of the water-stopping body 10, and a movable engaging portion 60 that moves and protrudes from the upper water-stopping body 20 toward the lower water-stopping body 10 to suppress the water-stopping body 10 from bending downstream relative to the water-stopping body 20. Furthermore, the watertight body 20 comprises a vertical watertight material 24 that is sandwiched between each support column 30 and elastically contracts, a horizontal watertight material 25 that is sandwiched between the upper end surface of the lower watertight body 10 and elastically contracts, and an auxiliary watertight material 26 that connects these vertical watertight material 24 and horizontal watertight material 25 (see Figure 4).

[0024] The main plate 21 is formed in much the same manner as the main plate 11 described above, using a hard material such as metal to create a hollow, horizontally elongated rectangular plate, with one end and the other end in the longitudinal direction overlapping the upstream side of the support column 30.

[0025] The lower engaging projection 22 and the upper engaging projection 23 are each configured as rollers with their tips rotatable, and engage with the lower engaged portion 33a and the upper engaged portion 33b (see Figure 7) of the support column 30 (described later) from the upstream side.

[0026] The vertical watertight material 24, the horizontal watertight material 25, and the auxiliary watertight material 26 are all made of the same material as the vertical watertight material 14 and the horizontal watertight material 15 described above, and are integrally connected to the main plate 21 by fitting, adhesive, or other means.

[0027] The vertical watertight material 24 has its protruding portion facing downstream and extends continuously over approximately the entire length of the main plate 21 in the vertical direction. The lateral watertight material 25 has its protruding portion facing almost directly downwards and extends continuously over approximately the entire length of the main plate 21 in the lateral direction. The auxiliary watertight material 26 has its convex portion facing almost directly downward and is continuous in the thickness direction of the main plate 21. This auxiliary watertight material 26 is in watertight contact with the lower end of the vertical watertight material 24 and also in watertight contact with the lateral end of the horizontal watertight material 25 (see Figure 4).

[0028] The movable engaging portion 60 protrudes downward from the upper water-stopping body 20 and overlaps with the upstream side surface of the water-stopping body 10, moving between a deflection suppression position (see Figure 12(b)) that prevents the upper water-stopping body 20 from deflecting downstream relative to the lower water-stopping body 10, and a storage position (see Figure 12(a)) where it is returned to the upper water-stopping body 20 side.

[0029] The movable engagement portion 60 comprises a reinforcing plate portion 61 that overlaps the upstream side of the upper water-stopping body 20 in the storage position, and an operating portion 62 that protrudes upstream from the reinforcing plate portion 61.

[0030] The reinforcing plate portion 61 is a flat plate-shaped member having appropriate bending strength, and is formed from, for example, a rust-proofed iron plate or stainless steel plate. The reinforcing plate portion 61 is provided with a plurality of elongated holes 61a spaced apart in the lateral direction. A screw-in member 61b (such as a screw or bolt) is inserted through each elongated hole 61a.

[0031] The screw-in member 61b locks its head to the reinforcing plate portion 61, and the threaded portion at its tip, which passes through the elongated hole 61a, is screwed into the main plate 21. The screw-in member 61b is in a relationship with respect to the elongated hole 61a, where it slides up and down relative to it. The head of this screw-type member 61b has a relatively large outer diameter to facilitate manual turning, and its perimeter is treated with anti-slip features such as grooves. Furthermore, the threaded portion of the screw-fitting member 61b is inserted through the upstream side surface of the hollow main body plate 21 and screwed into and tightened onto a reinforcing member 21a (such as a weld nut and reinforcing plate, as shown in the example in Figure 12) provided inside the main body plate 21.

[0032] The operating section 62 is formed in the shape of a long rectangular parallelepiped in the vertical direction, as shown in the illustrated example, and is integrally fixed to the surface of the reinforcing plate section 61 by appropriate fixing means such as welding. This operating part 62 functions as a part that is grasped by hand when sliding the movable engaging part 60 up and down, and also functions as a reinforcing member that prevents bending and deformation of the reinforcing plate part 61.

[0033] With the movable engagement part 60 configured as described above, the user can loosen the screw member 61b by turning it by hand, grasp the operating part 62 by hand and move it downward so that the reinforcing plate part 61 overlaps the upstream side surface of the water-stopping body 10.

[0034] Furthermore, when transporting the water-stopping body 20, the operating part 62 can be grasped by hand and moved upward, and the screw-in member 61b can be tightened to secure the reinforcing plate 61 and the operating part 62 so that they do not move downward.

[0035] In the above configuration, a water-stopping body 20' (additional water-stopping body) is further stacked on top of the water-stopping body 20. The water-stopping body 20' is the water-stopping body 20 with the movable engaging portion 60 omitted. This watertight body 20' maintains its watertightness by pressing its vertical watertight materials 24, 24 on both sides against the support columns 30, 30, and by pressing its lower horizontal watertight material 25 and auxiliary watertight materials 26, 26 against the upper end surface of the lower watertight body 20.

[0036] In Figures 1 and 2, etc., reference numeral 17 denotes a handle used to grip the water-stopping bodies 10, 20, and 20' when carrying them. In Figure 6, reference numeral 63 denotes a protective plate sandwiched between the reinforcing plate portion 61 and the main body plates 21 and 11 to prevent damage or alteration to the main body plates 21 and 11. This protective plate 63 is made of a soft material (for example, a rubber sheet) and is fixed to the reinforcing plate portion 61 so as to move up and down integrally with the reinforcing plate portion 61.

[0037] The support columns 30 are erected on both the left and right sides so as to support both ends in the lateral direction on the downstream side of the water-stopping bodies 10, 20, and 20', and are fixed to, for example, the openings on both sides of the structure of a building or underpass. As shown in Figure 7, each support column 30 comprises a support column body 31 connected substantially perpendicularly to the lower frame 40 and extending vertically, a lower end engagement block 32 that engages with the lowest water-stopping body 10 at the lower end of the support column body 31, multiple intermediate engagement blocks 33, 33 (two in the illustrated example) provided at intervals above the lower end engagement block 32 on the support column body 11, an upper end engagement block 34 provided at the upper end of the support column body 31, and a cover portion 35 that partially covers these engagement blocks 32, 33, 34.

[0038] The support column body 31 is formed in an elongated shape extending in the vertical direction and has a water-stopping surface 31a that receives the water-stopping bodies 10, 20, and 20' from the downstream side.

[0039] The water-stopping surface 31a is a flat surface that is approximately perpendicular to the direction of water flow and is continuous in the vertical direction, straddling the water-stopping bodies 10, 20, and 20'. A vertical watertight material 14 is pressed against the watertight receiving surface 31a in a watertight manner along its entire vertical length, and the end side of the horizontal watertight material 15 is also pressed against it in a watertight manner.

[0040] Furthermore, the lower end engaging block 32, intermediate engaging blocks 33, 33, and upper end engaging block 34 are fixed to the water-stopping body receiving surface 31a.

[0041] The lower end engaging block 32 has an engaged portion 32a on its upper surface that engages with the lower engaging projection 12 of the water-stopping body 10, thereby guiding the water-stopping body 10 to the water-stopping position. The engaged portion 32a has a projection 32a1 that protrudes upward near the upstream end, and an inclined bottom surface portion 32a2 downstream of the projection 32a1 that guides the lower engaging projection 12 diagonally downward downstream (see Figure 8).

[0042] Two intermediate engagement blocks 33 are provided so as to engage with the lower engagement projection 22 and the upper engagement projection 23 of the water-stopping body 20, respectively (see Figure 7). Of these two intermediate engagement blocks 33, the upper intermediate engagement block 33 also engages with the lower engagement projection 22 of the third water-stopping body 20'.

[0043] Each intermediate engagement block 33 has a lower engaging portion 33a on its upper surface. The lower engaging portion 33a engages with the lower engaging projection 22 of the water-stopping body 20 (or 20') to guide the water-stopping body 20 (or 20') to the water-stopping position. The lower engaged portion 33a has substantially the same shape as the engaged portion 32a of the lower end engaging block 32 described above.

[0044] Furthermore, of the two intermediate engagement blocks 33, the lower end surface of the upper intermediate engagement block 33 functions as an upper engaged portion 33b that engages with the upper engaging projection 23 of the water-stopping body 20 (additional water-stopping body). When the upper engaging projection 23 of the water-stopping body 20 is pressed downward by the upper engaged portion 33b of the upper intermediate engaging block 33, the lateral watertight material 25 at the lower end of the water-stopping body 20 is pressed watertightly against the upper end of the water-stopping body 10 and elastically contracts.

[0045] Furthermore, the lowest water-stopping body 10 does not have an upper engaging projection or the like (see Figure 3), and therefore does not come into contact with the intermediate engaging block 33.

[0046] The upper engagement block 34 has a lower end surface that is substantially the same shape as the lower end surface of the intermediate engagement block 33, and this lower end surface is designated as the upper engaged portion 34a. This upper engaged portion 34a presses downward the upper engaging projection 23 of the third water-stopping body 20'.

[0047] The cover portion 35 partially covers the lower end engagement block 32, the intermediate engagement blocks 33, 33, and the upper end engagement block 34. In other words, the insertion paths of the lower engaging projection 12, the lower engaging projection 22, and the upper engaging projection 23 are not covered by the cover portion 35. Also, the water-stopping side surfaces of the lower end engaging block 32, the intermediate engaging blocks 33, 33, and the upper end engaging block 34 are not covered by the cover portion 35 (see Figure 2).

[0048] The cover portion 35 is provided with a locking / unlocking piece 35a into which the locking / unlocking rod 13a of the locking device 13 described above is engaged and disengaged. The engagement / disengagement piece 35a is located upstream of the laterally protruding engagement / disengagement rod 13a when the water-stopping body 10, 20, or 20' is installed.

[0049] The lower frame 40 is a member that receives the lowest water-stopping body 10 from below and also watertightly receives the water-stopping body 10 from the downstream side when it is pressed downstream by the pressing mechanism 50, and extends in a long, lateral shape. The lower end of the left support column 30 and the lower end of the right support column 30 are connected to one end and the other end of this lower frame 40, respectively (see Figures 7 and 8).

[0050] The lower frame 40 has a bottom surface 41 that receives the water-stopping body 10 from below, a downstream rising surface 42 that receives the water-stopping body 10 from the downstream side across its width, and an upstream rising surface 43 that is located upstream so as to place the water-stopping body 10 between the downstream rising surface 42, and is configured to have a roughly concave or inverted hat shape in its vertical cross-section (see Figure 9). This lower frame 40 is held in place with sufficient strength by a lower immovable surface F provided downstream of the downstream rising surface 42 and upstream of the upstream rising surface 43. The lower immovable surface F is, for example, a floor surface formed by laying concrete, mortar, stone, etc.

[0051] The bottom surface 41 is formed in a substantially flat, plate-like shape over substantially the entire length in the width direction of the lower frame 40. A drainage hole 41a is provided in this bottom surface 41. The water that accumulates on the bottom surface 41 is drained by the drain pipe 41b located below the bottom surface 41.

[0052] The downstream rising surface 42 is a surface that rises upward by a predetermined amount from the downstream edge of the bottom surface 41. The wall portion that constitutes this downstream rising surface 42 is bent downstream at its upper end. Below this bent portion, a floor or ground surface is formed using concrete or the like. When the water-stopping body 10 is placed on the lower frame 40 and engages with the left and right support columns 30, 30, and is pushed downstream by the pressing mechanism 50, this downstream rising surface 42 receives the lateral watertight material 15 of the water-stopping body 10, causing it to elastically contract and maintain a watertight seal between the water-stopping body 10 and the surface (see Figure 13).

[0053] The upstream rising surface 43 is a surface that rises upward by a predetermined amount from the upstream edge of the bottom surface 41. The wall portion that constitutes this upstream rising surface 43 is bent upstream at its upper end. Below this bent portion, a floor surface or ground (not shown) is formed by concrete or the like. A space for forming the pressing mechanism 50 is secured between the upstream rising surface 43 and the water-stopping body 10, which is placed on the lower frame 40 and engaged with the left and right support columns 30, 30 (see Figure 13).

[0054] This upstream rising surface 43 functions as a receiving surface that receives the cremone handle 51 when the engaging portion 51b of the cremone handle 51 rotates downward. In other words, as shown in Figure 11, when the cremone handle 51 is rotated from a horizontal position to a vertical position, the engaging portion 51b slides against the upstream rising surface 43 (receiving surface), and the water-stopping body 10 is pushed downstream.

[0055] In the illustrated example, the lower frame 40 is constructed by connecting multiple members that extend in the width direction, but it can also be constructed from a single member.

[0056] <About the adjustment tool> In the above configuration, the height position of the upper intermediate engagement block 33 is appropriately adjusted using the adjustment tool 70 during the manufacturing stage of the water-stopping device A (see Figures 14 and 15).

[0057] The adjustment tool 70 integrally comprises a vertical rod portion 71 that is continuous in the vertical direction, a lower contact portion 72 provided on the lower end side of the vertical rod portion 71, and an upper contact portion 73 provided on the upper end side of the vertical rod portion 71, and is formed, for example, by appropriately processing a hard metal plate.

[0058] The lower contact portion 72 is formed to contact the upper end of the lowest water-stopping body 10 from above. In a preferred example shown in Figure 15, the lower contact portion 72 is formed in an inverted concave shape that loosely fits onto the upper end of the water-stopping body 10. In other words, the lower contact portion 72 has a first piece 72a that contacts the upper end of the water-stopping body 10, a second piece 72b that runs along the upstream side of the water-stopping body 10, and a third piece 72c that runs along the downstream side of the water-stopping body 10, and the inverted concave portion made up of these three pieces is fitted onto the upper end of the water-stopping body 10.

[0059] The upper contact portion 73 is formed in a plate shape at the upper end of the vertical rod portion 71, bent at approximately a right angle to the vertical rod portion 71.

[0060] During the manufacturing stage of the water-stopping device A, when the upper intermediate engagement block 33 corresponding to the second water-stopping body 20 is fixed to the support column body 31, the water-stopping body 10 is set in a predetermined water-stopping position, and then the adjuster 70 is fitted so that the lower contact portion 72 contacts the upper end of the water-stopping body 10 (see Figure 14). Then, the intermediate engagement block 33 is fixed to the support column body 31 by bringing the upper engaged portion 33b of the intermediate engagement block 33 into contact with the upper surface of the upper contact portion 73 of the adjustment tool 70.

[0061] After this, the upper end engagement block 34 corresponding to the third water-stopping body 20' is also positioned and secured using the adjustment tool 70 after the water-stopping bodies 20 have been stacked, in the same manner as described above.

[0062] Therefore, the adjustment tool 70 allows for highly accurate positioning of the upper engaged portions 33b and 34a. As a result, the upper engaged portions 33b and 34a press the water-stopping bodies 20 and 20' downward by an appropriate amount, thereby adjusting the amount of contraction of the lateral watertight material 25 and auxiliary watertight material 26 at the lower ends of the water-stopping bodies 20 and 20', and maintaining a high level of watertightness between the upper and lower water-stopping bodies.

[0063] <Effects and Effects> Next, the characteristic effects of the water-stopping device A with the above configuration will be explained in detail. In the event of a potential flood due to typhoons or torrential rains, the first water-stopping body 10 is attached to the pre-installed left and right support columns 30, 30 and the lower frame 40, starting from the upstream side. As shown in Figure 10(a), the water-stopping body 10 is positioned with its upper end tilted towards the upstream side, and is brought closer to the left and right support columns 30, 30 and the lower frame 40 from the upstream side.

[0064] Next, as shown in Figure 10(b), the lower engaging projection 12 engages with the engaged portion 32a, causing the upper end of the water-stopping body 10 to rotate downstream, and the lower leg portion 16 of the water-stopping body 10 comes into contact with the bottom surface 41 of the lower frame 40, becoming approximately vertical.

[0065] Next, as shown in Figure 10(c), the cremone handle 51 is rotated from a horizontal position to a vertical position, and the water-stopping body 10 is pushed downstream. Therefore, each vertical watertight material 14 of the watertight body 10 is pressed against the support column 30 and elastically contracts, and the horizontal watertight material 15 is pressed against the upstream rising surface 43 of the lower frame 40 and elastically contracts, so that the space between the watertight body 10 and the support columns 30, 30 and the lower frame 40 is kept watertight.

[0066] Thus, with the water-stopping device A, even if there are irregularities or foreign objects on the lower fixed surface (bottom surface 41 in the illustrated example), the lateral watertight material 15 of the water-stopping body 10 can be pressed against the downstream rising surface 42 of the lower frame 40, thereby achieving good watertightness.

[0067] Furthermore, with water-stopping device A, it is not necessary to press the lowest water-stopping body 10 against the lower immovable surface as in the conventional technology. Therefore, there is no need to provide an upper engaging projection or the like on the water-stopping body 10, resulting in a simpler structure.

[0068] Next, as shown in Figure 2, the locking device 13 is manually operated, causing the locking / unlocking rod 13a of the locking device 13 to protrude outward in the lateral direction and engage with the support column 30. The engagement / disengagement rod 13a protrudes so as to be located downstream of the engagement / disengagement piece 35a on the support column 30.

[0069] Therefore, the water-stopping body 10 engages its left and right lower engaging protrusions 12, 12 with the left and right engaged portions 32a, 32a, respectively, and is pressed against the left and right support columns 30, 30 and the downstream rising surface 42 by the pressing mechanism 50, thereby maintaining watertightness. Furthermore, the locking device 13 prevents the water-stopping body 10 from moving upstream due to the elastic force of the vertical water-tight materials 14, 14 on the left and right sides, thereby preventing the loss of watertightness.

[0070] Alternatively, contrary to the above explanation, the locking device 13 may be engaged with the support column 30 first, and then the water-stopping body 10 may be pushed downstream by the pressing mechanism 50.

[0071] Next, the second water-stopping body 20 (additional water-stopping body) is prepared. In this preparation stage, the movable engaging portion 60 of the water-stopping body 20 is in a retracted position, moved upward. Therefore, during this preparation stage, it is possible to prevent the movable engaging part 60 from touching other objects and thus reducing work efficiency.

[0072] Then, with the movable engaging portion 60 in its retracted position, the water-stopping body 20 is stacked on the water-stopping body 10, with the lower engaging projection 22 and the upper engaging projection 23 engaging with the lower engaged portion 33a and the upper engaged portion 33b of the support column 30, respectively. During this process, each vertical watertight material 24 of the watertight body 20 is pressed against the support column 30 and shrinks, while the horizontal watertight material 25 and auxiliary watertight material 26 are pressed against the upper end of the watertight body 10 and shrink. Therefore, the space between the watertight body 20 and the left and right support columns 30, 30 and the upper end of the watertight body 10 is made watertight.

[0073] Next, the locking device 13 is operated on the water-stopping body 20 as well, so that the locking / unlocking rod 13a protrudes so that it is positioned downstream of the locking / unlocking piece 35a on the support column 30. Therefore, the water-stopping body 20 is held in place so as not to move upstream, by pressing each vertical watertight material 24 against the support column 30 in a watertight manner.

[0074] Then, the movable engaging portion 60 of the water-stopping body 20 is moved downward. More specifically, the threaded member 61b of the movable engagement part 60 is loosened by hand, and the operating part 62 is grasped by hand and lowered, so that the lower end of the reinforcing plate part 61 is positioned along the upstream side of the water-stopping body 10 (see Figure 12). After this, the threaded member 61b is tightened by hand, and the reinforcing plate part 61 is fixed in place.

[0075] Therefore, the contact between the movable engagement part 60 and the water-stopping body 10 prevents the water-stopping body 20 from bending in a roughly arc shape downstream when facing the water-stopping body 10 due to the water flow.

[0076] After this, the water-stopping body 20' is also stacked on top of the water-stopping body 20 in the same manner as the water-stopping body 20, and the locking device 13 is operated to press it against the left and right support columns 30, 30 and the upper end of the water-stopping body 20 in a watertight manner.

[0077] <Variation> According to the above-described water-stopping device A, the front-to-back position of the cremone handle 51 can be adjusted by the protrusion amount adjustment spacer 53 (see Figure 5). However, as an alternative example, a pressing mechanism 50' may be configured as shown in Figure 16. The pressing mechanism 50' is equipped with one or more receiving surface adjustment spacers 55 so as to be sandwiched between the engaging portion 51b when it rotates downward and the upstream rising surface 43 (receiving portion). The receiving surface adjustment spacer 55 is formed in the shape of a thin plate from a hard material such as metal, and in the illustrated example, multiple spacers are provided. The surface of the receiving surface adjustment spacer 55, located at the downstream end, is in sliding contact with the engaging portion 51b when it rotates downward.

[0078] Therefore, according to the embodiment shown in Figure 16, even after the water-stopping device A is completed, the amount of pressure applied by the pressing mechanism 50 can be adjusted by adjusting the number of receiving surface adjustment spacers 55. In addition, in the pressing mechanism 50', the protrusion amount adjustment spacer 53 (see Figure 5) mentioned earlier may be omitted, or it may be used in combination without being omitted.

[0079] In the above embodiment, the vertical watertight material 14 and the horizontal watertight material 15 are provided on the watertight body 10. However, other examples include a configuration in which the vertical watertight material 14 is not provided on the watertight body 10 but is provided on the support column 30, or a configuration in which the horizontal watertight material 15 is not provided on the watertight body 10 but is provided on the lower frame 40.

[0080] In the above embodiment, the upstream rising surface 43 of the lower frame 40 is used as a receiving portion for the engaging portion 51b of the cremone handle 51. However, in other examples, it is also possible to provide a receiving portion for the engaging portion 51b on a fixed part other than the lower frame 40 (for example, the floor surface).

[0081] According to the above embodiment, the pressing mechanism 50 is configured with a cremone handle 51, but the pressing mechanism 50 may be configured without a cremone handle 51 as long as it is configured to push the water-stopping body 10 downstream and press it against the downstream rising surface 42. In other words, another example of the pressing mechanism 50 is to insert a wedge-shaped member between the upstream rising surface 43 and the upstream side surface of the water-stopping body 10, thereby pushing the water-stopping body 10 downstream and pressing it against the downstream rising surface 42. As another example, a compression spring (for example, a coil spring or a leaf spring) can be inserted between the upstream rising surface 43 and the upstream side of the water-stopping body 10 to push the water-stopping body 10 downstream and press it against the downstream rising surface 42. Furthermore, another example is a configuration in which the water-stopping body 10 is pushed downstream by one end of a screw-shaped member screwed into the upstream rising surface 43 and pressed against the downstream rising surface 42.

[0082] In the above embodiment, the movable engaging portion 60 of the upper water-stopping body 20 is moved downward to overlap with the upstream side surface of the lower water-stopping body 10. However, in another example, a recess may be provided at the upper end of the lower water-stopping body 10, and the movable engaging portion 60 of the upper water-stopping body 20 may fit into this recess in an interlocking manner. As another example, a movable engaging portion may be provided on the lower water-stopping body 10, and this movable engaging portion may be engaged with the downstream side surface of the upper water-stopping body 20.

[0083] According to the above embodiment, in one preferred example, a single movable engaging portion 60 is provided on the central side in the lateral direction of the movable engaging portion 60. However, in other examples, it is also possible to provide multiple movable engaging portions 60 in the lateral direction, or to provide the movable engaging portions 60 at locations other than the central side in the lateral direction.

[0084] According to the above embodiment, in one preferred example, the movable engaging portion 60 is configured as a substantially plate-like shape that can move up and down. However, in another example, the movable engaging portion 60 can be configured as a vertically elongated rod-like shape that can move up and down.

[0085] In the above embodiment, the movable engaging portion 60 is designed to engage with and disengage from the main body plate 11 by sliding it vertically. However, as another example of this movable engaging portion, it is also possible to design it so that one end rotates around a pivot point, allowing the other end to engage with and disengage from the main body plate 11.

[0086] 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.

[0087] <Summary> As described above, the above embodiment discloses the following invention. (1) A water-stopping device (see Figures 1 to 16) comprising: multiple water-stopping bodies stacked vertically intersecting the expected water flow direction; support columns each supporting the multiple water-stopping bodies on both sides in the width direction; and a movable engaging part provided on one of the vertically adjacent water-stopping bodies, wherein the movable engaging part moves between a deflection suppression position, where it protrudes from one water-stopping body side to the other water-stopping body side to suppress the deflection of one water-stopping body downstream relative to the other water-stopping body, and a storage position, where it is returned to the side of the one water-stopping body. (2) The water-stopping device according to (1) (see Figures 1, 12, 13, etc.), wherein a lower frame is provided below the lowest water-stopping body among the multiple water-stopping bodies that can be stacked, the lower frame has a bottom surface that receives the lowest water-stopping body from below and a downstream rising surface that receives the same water-stopping body from the downstream side across its width, and the movable engaging part is provided on the water-stopping body that is stacked on the lowest water-stopping body. (3) The water-stopping device according to (1) or (2) (see Figures 1, 12, 13, etc.) is characterized in that the movable engaging portion is provided on the upstream side of one of the water-stopping bodies, protrudes toward the other water-stopping body, overlaps with the upstream side of the other water-stopping body, and becomes the deflection-suppressing position. (4) The water-stopping device according to any one of (1) to (3) (see Figures 6, 12, 13, etc.) is characterized in that the movable engaging portion is provided with an operating portion that protrudes upstream. (5) The water-stopping device according to (4) (see Figure 12), characterized in that the movable engaging portion includes a reinforcing plate portion that overlaps with the surface of one of the water-stopping bodies in the stored position, and the operating portion is provided on this reinforcing plate portion. (6) The water-stopping device according to (5) (see Figure 12), characterized in that the reinforcing plate portion is provided with vertically elongated holes, a screw-in member is inserted through the elongated holes, and the screw-in member is screwed into the water-stopping body. [Explanation of symbols]

[0088] 10 Water-stopping body 11 Main panel 12 Lower engaging protrusion 13a Detachment rod 15. Lateral watertight material 20,20' Water-stopping body (additional water-stopping body) 21 Main panel 22 Lower engagement protrusion 23 Upper engaging protrusion 25 Lateral watertight material 26 Auxiliary watertight material 31 Main support column 32 Lower end engagement block 32a Engaged part 33 Intermediate engagement block 33a Lower engaged part 33b Upper engaged part 34 Upper end engagement block 34a Upper engaged part 35 Cover section 35a Detachment piece 40 Bottom frame 41 Bottom 42 Downstream rising surface 43 Upstream rising surface (receiving section) 50,50' Pressing mechanism 51. Cremone handle 51a Rotation operation section 51b Engagement part 52 Bearing section 53. Spacer for adjusting protrusion amount 55 Receiving surface adjustment spacer 60 Movable engagement part 61 Reinforcement plate section 61a long hole 61b Threaded member 62 Operation section 70 Adjustment tool 72 Lower contact part 73 Upper contact part A. Water shutoff device

Claims

1. The system comprises multiple water-stopping bodies stacked vertically intersecting the expected water flow direction, support columns that support the multiple water-stopping bodies on both sides in the width direction, and a movable engaging part provided on one of the vertically adjacent water-stopping bodies. The water-stopping device is characterized in that the movable engaging portion moves between a deflection-suppressing position, where it protrudes from one water-stopping body side to the other water-stopping body side to suppress the deflection of the one water-stopping body toward the other water-stopping body toward the downstream side, and a storage position, where it is returned to the one water-stopping body side.

2. Among the multiple water-stopping bodies that can be stacked, a lower frame is provided on the lower side of the lowest water-stopping body. The lower frame has a bottom surface that receives the lowest water-stopping body from below and a downstream rising surface that receives the same water-stopping body from the downstream side across its width. The water-stopping device according to claim 1, characterized in that the water-stopping body stacked on top of the lowest water-stopping body is provided with the movable engaging portion.

3. The water-stopping device according to claim 1, characterized in that the movable engaging portion is provided on the upstream side of one of the water-stopping bodies, protrudes toward the other water-stopping body, overlaps with the upstream side of the other water-stopping body, and becomes the deflection-suppressing position.

4. The water-stopping device according to any one of claims 1 to 3, characterized in that the movable engaging portion is provided with an operating portion that protrudes upstream.

5. The water-stopping device according to claim 4, characterized in that the movable engaging portion includes a reinforcing plate portion that overlaps with the surface of one of the water-stopping bodies in the stored position, and the operating portion is provided on this reinforcing plate portion.

6. The water-stopping device according to claim 5, characterized in that the reinforcing plate portion is provided with vertically elongated holes, a screw-in member is inserted through the elongated holes, and the screw-in member is screwed into the water-stopping body.

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