Water stop

Abstract

To provide a water-stop plate allowing an evacuation route to be secured by easily arranging and constructing a water-stop wall on any place such as on a road or in an opening of a building where floodwater penetration is assumed to occur or occurrence of floodwater penetration is assumed, to generally prevent the penetration of rain water and floodwater.SOLUTION: Water-stop plates of the present invention allowing a water-stop wall to be constructed by connecting them in a left / right direction, comprise a bottom part placed on the construction surface of the water-stop wall on which the water-stop wall is to be constructed, and an erected part erected upward from a rear part of the bottom part, wherein the erected part comprises a first connection part on one of its end parts and a second connection part detachably connected and fixed to the first connection part of the water-stop plate connected adjacently in the left / right direction on the other end in a state where erected parts of water-stop plates connected adjacently to each other in the left / right direction are connected at a required angle.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a waterstop. [Background technology]

[0002] In recent years, heavy rainfall and other events have caused large amounts of rainfall in a short period of time, resulting in rivers overflowing, causing flooding, and floodwaters entering roads and becoming submerged, or entering buildings. In order to prevent such floodwaters from entering, it has been proposed to install waterstops.

[0003] Patent Document 1 proposes a waterstop comprising a plurality of plates connected together in the height direction, an upright plate-shaped waterstop body having an opening abutment surface that abuts the front edge of the building opening and a ground abutment surface that abuts the ground, and a downward pressing mechanism that presses the waterstop body from above downward, and in which upright surfaces are formed on the front and rear outer edges of the other plate end of one of the two plates connected together in the height direction, into which one plate end of the other plate is fitted. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-14723 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned waterstop is used by placing the waterstop body in an opening in a building, and has the problem that it can only be used in openings in buildings for which it is intended to be used, and cannot be placed in any location where floodwater occurs.

[0006] Furthermore, the above-mentioned waterstop has a problem in that it takes time to install the waterstop body at the opening of the building, and the waterstop cannot be installed within a short period of time.

[0007] The present invention provides a water stop plate that can be easily installed in a short time at any location, such as a road or building opening where floodwater intrusion occurs or is expected, to construct a water stop wall, thereby generally preventing the intrusion of rainwater, floodwater, etc., and ensuring evacuation routes, etc. [Means for solving the problem]

[0008] The waterstop of the present invention is a waterstop that can be connected in the left-right direction to form a waterstop wall, A bottom portion to be placed on a water cutoff wall construction surface on which the water cutoff wall is constructed; and a rising portion extending upward from the rear of the bottom portion, The above-mentioned standing portion has a first connection portion at one end thereof, and a second connection portion at the other end which is detachably connected and fixed to the first connection portion of the waterstop plate which is connected adjacent to each other in the left-right direction, with the standing portions of the waterstop plate which are connected adjacent to each other in the left-right direction being connected at a desired angle. Effect of the Invention

[0009] The waterstop plate of the present invention can easily construct a waterstop wall by simply arranging multiple waterstop plates in succession in the left-right direction on a waterstop wall construction surface and connecting the first connection portion of one waterstop plate to the second connection portion of the other waterstop plate that are adjacent to each other in the left-right direction.

[0010] As described above, the waterstop of the present invention is connected continuously in the left-right direction by connecting the mutually opposing first and second connection parts of the waterstops adjacent in the left-right direction, and does not require any additional equipment for disposing the waterstop at the location where the waterstop wall is to be constructed. Therefore, the waterstop of the present invention makes it possible to construct a waterstop wall at a desired location without having to choose the location where the waterstop wall is to be constructed.

[0011] In the above waterstop plate, when the first connection portion has an arc-shaped receiving portion and the second connection portion has a locking portion that can be freely engaged and disengaged at a desired position on the receiving portion, by locking the second connection portion at the desired position on the arc-shaped receiving portion of the first connection portion, the upright portions of adjacent waterstop plates can be connected in the left-right direction at the desired connection angle, and a waterstop wall of the desired shape can be constructed.

[0012] In the above waterstop, when the first connection portion has a convex arc-shaped first abutment surface formed at one end of the upright portion and curved in the direction of change in the connection angle of the upright portions of the adjacent waterstops connected to each other, and the second connection portion has a concave arc-shaped second abutment surface abutting the first abutment surface, the convex arc-shaped first abutment surface of the first connection portion of one waterstop is abutted against the concave arc-shaped second abutment surface of the second connection portion of the other waterstop, and the other waterstop is positioned around the first connection portion of one waterstop, and then the other waterstop is smoothly rotated around the first connection portion of the one waterstop using the first abutment surface as a guide surface, thereby easily adjusting the connection angle between the upright portions of adjacent waterstops and constructing a waterstop wall of the desired shape in a short period of time.

[0013] In the above-mentioned waterstop, when the first connection portion has a receiving portion at the upper end of the first abutment surface, while the second connection portion has an engaging portion at the upper end of the second abutment surface, adjacent waterstops can be connected at the desired connection angle by engaging or hooking the engaging portion of the second connection portion of the other waterstop with the engaging portion of the first connection portion of the other waterstop, positioning the other waterstop around the receiving portion of the one waterstop, and then rotating the other waterstop around the receiving portion of the one waterstop, thereby easily constructing a waterstop wall having the desired shape.

[0014] In the above-mentioned waterstop, when the receiving portion of the first connection portion is formed in a circular ring shape, the adjacent waterstops can be easily connected with their upright portions at the desired connection angle by engaging or hooking the locking portion of one waterstop to any portion of the receiving portion of the other waterstop, and then rotating or displacing the other waterstop around the first connection portion of the other waterstop.

[0015] In the above waterstop plate, when the engaging portion of the second connection part is fixed to the receiving portion of the first member by driving a pile member into the receiving portion of the first connection part, a waterstop wall can be constructed by continuously connecting and integrating multiple waterstop plates in the left-right direction with the simple task of driving a pile member into the receiving portion.

[0016] In the above-mentioned waterstop, the bottom of the waterstop has an upper engagement step formed on its upper surface and a lower engagement step formed on its lower surface, and in waterstops connected adjacent to each other in the left-right direction, when the lower engagement step of the bottom of the waterstop arranged overlapping on the upper side is configured to engage with a predetermined portion of the upper engagement step of the bottom of the waterstop arranged overlapping on the lower side, at at least one connection angle of the upright parts of the waterstops connected in the left-right direction, the upper and lower engagement steps formed on the bottoms of adjacent waterstops partially engage with each other, and it is possible to reduce inadvertent changes in the connection angle between the upright parts due to water pressure applied to the waterstop, generally prevent the waterstop wall from deforming, and the waterstop wall can provide an excellent waterstop effect.

[0017] In the above-mentioned waterstop plate, when the lower engagement step of the bottom of the waterstop plate arranged overlapping on the upper side is configured to engage with a predetermined portion of the outer peripheral edge of the bottom of the waterstop plate arranged overlapping on the lower side at at least one connection angle of the upright portions of the waterstop plates connected in the left-right direction, it is possible to reduce the connection angle of the upright portions of adjacent waterstop plates from being inadvertently changed due to water pressure applied to the waterstop plate, and it is possible to largely prevent deformation of the waterstop wall and impart excellent waterstopping effect to the waterstop wall.

[0018] In the above-mentioned waterstop, if the upper and lower engagement steps formed on the bottom of the waterstop are formed to have the same shape when projected in the vertical direction, when multiple waterstops are stacked vertically, the upper engagement step on the bottom of the lower waterstop will roughly match the lower engagement step on the bottom of the upper waterstop, allowing multiple waterstops to be stacked with a low vertical height, which not only saves storage space but also allows multiple waterstops to be easily and efficiently transported in a small volume to the desired waterstop wall construction surface to construct the waterstop wall.

[0019] In the above waterstop plate, a locking protrusion is formed on the receiving portion of the first connection part, and the locking portion of the second connection part has a locking piece that locks onto the locking protrusion. When waterstop plates connected adjacent to each other in the left-right direction are configured so that the direction of rotation restriction by engagement between the locking protrusion of the first connection part and the locking piece of the locking portion of the second connection part is opposite to the direction of rotation restriction by engagement between the upper and lower engaging steps of the bottom part, the engagement between the locking protrusion of the first connection part and the locking piece of the locking portion of the second connection part, and the engagement between the upper and lower engaging steps of the bottom part, can firmly fix the upright portions of the waterstop plates connected to each other in the left-right direction at a desired connection angle, and a waterstop wall that exhibits excellent waterstopping effect can be constructed by largely preventing deformation of the waterstop wall despite the water pressure applied to the waterstop plate.

[0020] In the above-mentioned waterstop plate, a plurality of upper and lower engagement steps are formed on the upper and lower surfaces of the bottom, and when the upright portions of the waterstop plates connected in the left-right direction are connected at at least one connection angle, at least one lower engagement step formed on the bottom of the waterstop plate arranged to be overlapped on the upper side has a partial shape that matches the partial shape of one upper engagement step formed on the bottom of the waterstop plate arranged to be overlapped on the lower side, the upper and lower engagement steps formed on the bottom of the waterstop plates arranged to be overlapped on each other can be firmly engaged by partially matching each other, and the waterstop plates connected to each other in the left-right direction can be more firmly fixed so that their upright portions are at the desired connection angle, and a waterstop wall that exhibits excellent waterstopping effect can be constructed by generally preventing deformation of the waterstop wall despite the water pressure applied to the waterstop plate. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view showing the waterstop of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] This is an end view of the DD line. [Figure 6] FIG. [Figure 7] FIG. 2 is a plan view showing the state in which water stops are connected in the left-right direction. [Figure 8] FIG. 2 is a plan view showing the state in which water stops are connected in the left-right direction. [Figure 9] 13 is a perspective view showing the state in which the locking portion of the second connection portion is locked into the receiving portion of the first connection portion of the waterstop. FIG. [Figure 10] FIG. 2 is a plan view showing the state in which water stops are connected in the left-right direction. [Figure 11] FIG. [Figure 12] FIG. [Figure 13]FIG. 2 is a plan view showing a water stop wall constructed using a water stop plate. [Figure 14] FIG. 2 is a perspective view showing the state in which the waterstop plates are connected to the left and right sides. [Figure 15] FIG. 2 is a plan view showing a method for constructing a water blocking wall using end members. [Figure 16] FIG. 2 is a plan view showing a method for constructing a water blocking wall using end members. [Figure 17] 1 is a perspective view showing a water blocking wall constructed using end members. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] An example of a waterstop of the present invention will be described with reference to the drawings. As shown in Figures 1 to 4, the waterstop A has a bottom 1 and an upright portion 2 that is integrally provided upward at the rear portion (preferably the rear edge portion) of the bottom 1.

[0023] The bottom 1 has a shape in which left and right sector-shaped sections 1b, 1c are joined to the left and right ends of a central section 1a that is rectangular in plan view, and has linear side edges 12, 13 that spread forward in directions away from each other from both the left and right ends of a rear edge 11 that is formed in a substantially linear shape. At the front edge 14 of the bottom 1, the central section 14a is formed in a substantially linear shape, and the left and right ends 14b, 14c are formed in a convex arc shape.

[0024] As described later, the bottom 1 is configured such that, in a state in which the waterstops A, A are continuously connected in the left-right direction, the opposing ends (left and right parts 1b, 1c) of the bottom parts 1, 1 of the waterstops A, A adjacent in the left-right direction can overlap or the opposing edges can abut each other over substantially the entire length. The left-right width of the front edges of the left and right parts 1b, 1c of the bottom 1 may be appropriately adjusted according to the connection angle α between the upright parts 2, 2 of the waterstops A, A connected in the left-right direction. Therefore, the left-right widths of the front edges of the left and right parts 1b, 1c of the bottom 1 of the waterstops A shown in Figures 1 to 4 are different from each other, but may be the same.

[0025] The connection angle α of the standing part is the angle (0°≦α≦90°) between the planes formed by the front (back) of the standing part 2 of the waterstop plate A connected in the left-right direction (if the front (back) of the standing part 2 has an uneven part, the plane is obtained by ignoring the uneven part from the front (back) of the standing part 2). For example, it is specified as follows. After the waterstop plate is connected to the left and right sides of one waterstop plate using the first and second connection parts and before being fixed by the pile members, the line connecting the rotation centers of the left and right waterstop plates when the waterstop plates connected to the left and right are rotated with the central waterstop plate as a reference is defined as the reference line L of the standing part of the waterstop plate. The angle (0°≦α≦90°) formed by the reference lines L and L of the standing parts of the waterstop plates connected in the left-right direction is defined as the connection angle α of the standing part.

[0026] The bottom 1 has a plurality of upper engagement steps 4 (41, 42) formed on its upper surface and a plurality of lower engagement steps 5 (51, 52) formed on its lower surface. The upper and lower engagement steps 4, 5 have vertical engagement surfaces 4a, 5a that allow the upper engagement step 4 and the lower engagement step 5 to be freely engaged and disengaged (see FIG. 5).

[0027] In the waterstop A shown in Figures 1 to 3, two upper engagement steps 4 are formed on the top surface of the bottom 1. The left upper engagement step (first upper engagement step) 41 is formed curving leftward from the rear edge of the central part 1a of the bottom 1 toward the front edge of the left side part 1b. Specifically, the first upper engagement step 41 is formed such that the main body part 41a, excluding the front end part 41b, is formed in a planar convex arc shape that protrudes to the right, and the front end part 41b is connected to the front end of the main body part 41a via a bent part 41c and reaches the front edge of the bottom 1, forming a planar convex arc shape that protrudes slightly to the right.

[0028] Also, the right-side upper engagement step (second upper engagement step) 42 formed on the top surface of the bottom 1 is formed while drawing a curve leftward from the front part of the right end edge 13 of the bottom toward the left part of the front end edge of the central part 14a. Specifically, the second upper engagement step 42 is formed such that the main body part 42a except for the left side part 42b is formed in a planar convex arc shape that protrudes forward, and the left side part 42b is connected to the left end of the main body part 42a via a bent part 42c and reaches the front end edge of the central part 1a of the bottom 1, forming a planar convex arc shape that protrudes slightly forward.

[0029] 6, two lower engagement steps 5 are also formed on the lower surface of the bottom 1. The lower engagement steps 5 are formed at a position slightly shifted in parallel to the upper engagement step 4 to the left in a plan view, and are formed in the same shape.

[0030] In detail, the left lower engagement step (first lower engagement step) 51 formed on the lower surface of the bottom 1 is formed in the same shape as the first upper engagement step 41 when viewed from above. The first lower engagement step 51 is formed while drawing a curved line leftward from the rear end edge of the central part 1a of the bottom 1 toward the front end edge of the left side part 1b. Specifically, the first lower engagement step 51 is formed such that the main body part 51a except for the front end part 51b is formed in a planar convex arc shape that protrudes to the right, and the front end part 51b is connected to the front end of the main body part 51a via a bent part 51c and reaches the front end edge of the bottom 1, forming a planar convex arc shape that protrudes slightly to the right.

[0031] The right lower engagement step (second lower engagement step) 52 formed on the underside of the bottom 1 is formed in the same shape as the second upper engagement step 42 when viewed from above. The second lower engagement step 52 is formed curving leftward from the front of the right edge 13 of the bottom toward the left side of the front edge of the central portion 14a. Specifically, the second lower engagement step 52 is formed such that the main body portion 52a, excluding the left side portion 52b, is formed in a planar convex arc shape that protrudes forward, and the left side portion 52b is connected to the left end of the main body portion 52a via a bent portion 52c and reaches the front edge of the central portion 1a of the bottom 1, forming a planar convex arc shape that protrudes slightly forward.

[0032] 7, the second upper engagement step 42 and the first lower engagement step 51 are formed so that their shapes partially match. Specifically, a portion of the first lower engagement step 51 excluding the rear end of the main body portion 51a (a remaining portion excluding the rear end of the first lower engagement step 51) and a portion of the second upper engagement step 42 excluding the front portion of the left side portion 42b (a remaining portion excluding the front end of the second upper engagement step 42) are formed so as to have the same shape.

[0033] As shown in Figure 7, the left side portion 52b of the second lower engagement step 52 has a portion that is formed in the same shape or has the same shape as the shape extending from the right end portion 1a1 of the front edge at the central portion 1a of the bottom 1 to the left end portion 1c1 of the front edge at the right side portion 1c of the bottom 1.

[0034] 8, a central portion 51a1 in the longitudinal direction of the main body portion 51a of the first lower engagement step 51 is formed in the same shape as the right end portion 42a1 of the main body portion 42a of the second upper engagement step 42. Also, a portion 52b1 (the remaining portion excluding the front end portion) of the left side portion 52b of the second lower engagement step 52 is formed in the same shape as the right end portion 1c2 of the front edge of the right side portion 1c of the bottom 1.

[0035] As shown in Figures 7 and 8, when the waterstop plates A, A are connected and integrated in the left-right direction at a predetermined connection angle α of the upright portions, the second lower engagement step 52 is formed to abut against the front edge of the right side portion 1c of the bottom 1.

[0036] As described above, in waterstops A that are connected adjacently in the left-right direction with at least one connection angle α of the upright portions 2, a portion of any upper engagement step 4 formed on the lower bottom 1 and / or the front edge of the bottom 1 is engaged with a portion of any lower engagement step 5 formed on the upper bottom 1, and the waterstops A, A are configured to generally prevent the connection angle α of their upright portions 2, 2 from being displaced significantly in the direction.

[0037] A seal member 1d made of an elastic material is disposed and integrated on the underside of the bottom 1 of the waterstop A, preferably on the front end of the underside of the bottom 1, and this seal member 1d absorbs unevenness formed on the waterstop wall construction surface B on which the waterstop A is to be placed, allowing the waterstop A to be placed on the waterstop wall construction surface B with as few gaps as possible. Although Fig. 5 shows the case where the seal member 1d is disposed and integrated on the front end of the bottom 1 of the waterstop A, the seal member may be disposed and integrated on another part of the underside of the bottom 1. The elastic material constituting the seal member 1d only needs to have elasticity that allows it to elastically recover in the environment in which the waterstop A is used.

[0038] The material constituting the sealing member is not particularly limited, and examples thereof include non-expanding simple sealant (unvulcanized butyl rubber, polyvinyl chloride), non-expanding composite sealant (a sealant combining chloroprene rubber as a core material and unvulcanized butyl rubber as an adhesive), water-expanding simple sealant (a sealant made of a homogeneous material in which chloroprene rubber is mixed with a highly water-absorbent polymer), and water-expanding composite sealant (a sealant combining a water-expanding simple sealant and chloroprene rubber). Such materials are made of materials having flexibility (flexibility, elasticity), such as synthetic resin materials (rubber, elastomer, flexible resin, etc.). For example, it is preferable to make the sealing member out of a rubber material containing many closed-cell type bubbles, which is less likely to deteriorate due to temperature changes and is wear-resistant. As an example, EPDM rubber foam, EPTSeal, or hollow rubber, can be used.

[0039] A standing portion 2 is provided at the rear (preferably the rear end) of the bottom 1 of the waterstop A, protruding upward and inclined slightly backward over the entire length in the left-right direction. The surface area of ​​the bottom 1 when viewed from above is configured to be larger than the surface area of ​​the standing portion 2 when viewed from the front, and the waterstop A is configured so that when water is blocked by a waterstop wall C constructed using the waterstop A, the total pressure of the water applied to the bottom 1 of the waterstop A and the sum of the weight of the waterstop A are larger than the total pressure of the water applied to the standing portion 2 of the waterstop A, so that the waterstop A is stably placed with its bottom 1 placed on the waterstop wall construction surface B and the standing portion 2 standing upward.

[0040] The height of the upright portion 2 of the waterstop A is preferably 30 cm or more, more preferably 50 cm or more, and more preferably 70 cm or more. The height of the upright portion 2 of the waterstop A is preferably 200 cm or less, more preferably 150 cm or less, and more preferably 120 cm or less.

[0041] A first connecting portion 21 is formed at the right end of the standing portion 2 of the waterstop A. The first connecting portion 21 has a first abutment surface 21a in a convex arc shape formed from the outer peripheral surface of a truncated cone by bulging the right end of the standing portion 2 of the waterstop A forward and exposed forward. The first abutment surface 21a is formed as a convex arc shape whose cross section along the horizontal direction protrudes forward and whose left-right width gradually narrows from bottom to top and is slightly inclined diagonally backward. The first abutment surface 21a is curved in a convex arc shape (protruding downward in FIG. 7) in the displacement direction of the standing portion 2 of one waterstop A when the standing portion 2 of the other waterstop A is used as a reference, in the waterstops A, A connected in the left-right direction.

[0042] Meanwhile, a second connection part 22 is formed at the left end of the standing part 2 of the waterstop A. The second connection part 22 has a concave arc-shaped second abutment surface 22a exposed to the rear by bulging the left end of the standing part 2 of the waterstop A forward over substantially the entire length in the vertical direction (see Figs. 1 and 4). The second abutment surface 22a is formed in substantially the same shape as the curved shape of the first abutment surface 21a, and when the second abutment surface 22a is placed on the first abutment surface 21a from the front, the opposing surfaces of the first abutment surface 21a and the second abutment surface 22a abut against each other over the entire length in the vertical direction and are in substantially tight contact with each other, so that leakage from between the opposing surfaces of the first abutment surface 21a and the second abutment surface 22a is substantially prevented.

[0043] The first connection part 21 has a cone-shaped receiving part 21b protruding rearward at its upper end. A ring-shaped flange part 21c of a constant width is formed horizontally outward at the upper open edge of the receiving part 21b of the first connection part 21, and is configured to be able to detachably engage with a locking part 22b of the second connection part 22 described later.

[0044] On the other hand, an engagement portion 22b is formed at the upper end of the second connecting portion 22 to be engaged and disengaged with the flange portion 21c of the receiving portion 21b of the first connecting portion 21. The engagement portion 22b has an engagement plate portion 22c that protrudes horizontally rearward from the entire length of the upper end of the second connecting portion 22 and is placed on the flange portion 21c of the receiving portion 21b of the first connecting portion 21 when the engagement portion 22b is engaged with the receiving portion 21b of the first connecting portion 21, and a concave arc-shaped engagement slope portion 22d that extends obliquely downward and rearward from the rear end of the engagement plate portion 22c and is disposed along the cone-shaped slope surface 21f of the receiving portion 21b when the engagement portion 22b of the second connecting portion 22 is engaged with the receiving portion 21b of the first connecting portion 21.

[0045] The locking plate portion 22c of the locking portion 22b of the second connecting portion 22 is formed in a planar arc shape having a constant width and curved with the same radius of curvature as the annular flange portion 21c of the receiving portion 21b of the first connecting portion 21. The locking portion 22b of the second connecting portion 22 is configured to be movable in the circumferential direction of the flange portion 21c of the receiving portion 21b of the first connecting portion 21 with the inclined surface 21f of the receiving portion 21b of the first connecting portion 21 as a guide surface for the locking inclined portion 22d of the locking portion 22b of the second connecting portion 22, with the locking plate portion 22c slightly raised above the flange portion 21c of the receiving portion 21b of the first connecting portion 21.

[0046] In addition, a through hole 21e for driving the pile member 6 is formed in the center of the receiving portion 21b of the first connection portion 21, penetrating in the vertical direction. By driving the pile member 6 into the through hole 21e through the upper end opening of the receiving portion 21b, the locking plate portion 22c of the locking portion 22b engaged with the receiving portion 21b is pressed against the flange portion 21c (or locking protrusion 21d) of the receiving portion 21b, and the locking portion 22b of the second connection portion 22 is fixed and integrated with the receiving portion 21b of the first connection portion 21 in a locked state. The lower half 61 of the pile member 6 is made of an elastically restorable rubber material, and is configured so that, by driving the pile member 6 into the receiving portion 21b of the first connecting portion 21, the elastic restoring force of the rubber material of the pile member 6 causes the engaging portion 22b of the second connecting portion 22 to be pressed against the receiving portion 21b of the first connecting portion 21.

[0047] Furthermore, a plurality of locking protrusions 21d are protrudingly provided at predetermined intervals around the circumferential direction of the flange portion 21c on the front (bottom 1 side) portion of the upper surface of the flange portion 21c of the receiving portion 21b, while a locking piece 22e is protruding downwardly from the left end edge of the locking plate portion 22c of the locking portion 22b of the second connecting portion 22, so that when the locking portion 22b of the second connecting portion 22 is engaged with the receiving portion 21b of the first connecting portion 21, the locking piece 22e of the locking portion 22b of the second connecting portion 22 can be engaged with the locking protrusion 21d of the receiving portion 21b of the first connecting portion 21.

[0048] In the above water stop plate A, the first connection portion 21 is formed at the right end of the standing portion 2 and the second connection portion 22 is formed at the left end, but the first connection portion 21 may be formed at the left end of the standing portion 2 and the second connection portion 22 may be formed at the right end.

[0049] In addition, in the above waterstop A, the right end of the standing portion 2 is bulged to form the first connection portion 21, but the first connection portion made of an elastic body may be disposed and integrated with the right end of the standing portion 2. The elastic body may have elasticity that allows elastic recovery in the environment in which the waterstop A is used, and may be made of the same material as the above-mentioned sealing member.

[0050] In addition, in the above waterstop A, the bottom 1 is formed with two engaging steps, but the upper and lower engaging steps 4, 5 formed on the bottom 1 may each be one or three or more. The shapes of the upper and lower engaging steps 4, 5 formed on the bottom do not need to be the same and may be different, and the numbers of the upper and lower engaging steps 4, 5 may differ from each other.

[0051] Furthermore, if the heights of the waterstop wall construction surface B on which adjacent waterstop plates A, A are placed in the left-right direction are different, the vertical heights of the bottoms 1, 1 of adjacent waterstop plates A, A will be different, and the receiving portion 21b of the first connection portion 21 of one waterstop plate A cannot be engaged with the engaging portion 22b of the second connection portion 22 of the other waterstop plate A, resulting in a gap being formed between the opposing surfaces of adjacent waterstop plates A, A, and water leakage will occur from this gap.

[0052] In such a case, end members 7 are removably attached to each of the opposing portions of waterstop plates A, A that are placed on waterstop-wall construction surfaces B of different heights and adjacent to each other in the left-right direction, and the end members 7 are brought into close contact with each other to absorb the difference in height of the waterstop-wall construction surface B.

[0053] As shown in Fig. 11 and Fig. 12, the end member 7 has a fan-shaped bottom 71 and upright portions 72a, 72b that protrude from the rear portion (preferably the rear edge portion) of the bottom 71 in a state of being slightly inclined obliquely backward upward, and an abutment portion 73 is formed between the opposing portions of the upright portions 72a, 72b by bulging forward. When the end member 7 is attached to the waterstop A, the opposing ends of the fan-shaped bottom 71 of the end member 7 and the bottom portion 1 of the waterstop A are configured to partially overlap each other. When the end member 7 is attached to the waterstop A, when the upright portions 72a, 72b of the end member 7 are brought into close contact with the upright portions 2 of the waterstop A, the upright portions 72a (72b) of the end member 7 and the upright portions 2 of the waterstop A are configured to be in almost close contact with each other over the entire surface of their opposing surfaces.

[0054] The abutment portion 73 of the end member 7 has a cross section along the horizontal direction that protrudes forward and has a convex arc shape that gradually narrows in width from bottom to top and is slightly inclined diagonally backward.

[0055] The front peripheral surface of the abutment portion 73 of the end member 7 is formed into a first abutment surface 73a having a convex arc shape formed from the outer circumferential surface of a truncated cone and exposed forward, while the rear peripheral surface of the abutment portion 73 of the end member 7 is formed into a second abutment surface 73b having a concave arc shape and exposed rearward.

[0056] The second abutment surface 73b of the abutment portion 73 of the end member 7 is formed in approximately the same curved shape as the first abutment surface 21a of the waterstop A, and when the second abutment surface 73b of the end member 7 is overlapped from the front on the first abutment surface 21a of the waterstop A, the opposing surfaces of the first abutment surface 21a of the waterstop A and the second abutment surface 73b of the end member 7 abut against each other over their entire vertical length and are in approximately tight contact, so that water leakage from between the opposing surfaces of the first abutment surface 21a of the waterstop A and the second abutment surface 73b of the end member 7 is generally prevented.

[0057] Similarly, the first abutment surface 73a of the abutment portion 73 of the end member 7 is formed in approximately the same curved shape as the second abutment surface 22a of the waterstop A, and when the second abutment surface 22a of the waterstop A is overlapped from the front on the first abutment surface 73a of the end member 7, the opposing surfaces of the second abutment surface 22a of the waterstop A and the first abutment surface 73a of the end member 7 abut against each other over their entire vertical length and are in approximately tight contact, so that water leakage from between the opposing surfaces of the second abutment surface 22a of the waterstop A and the first abutment surface 73a of the end member 7 is generally prevented.

[0058] Further, at the upper end of the abutting portion 73 of the end member 7, a locking portion 73c that can be locked to the receiving portion 21b of the first connecting portion of the waterstop A in a freely detachable manner is integrally formed. The locking portion 73c of the end member 7 protrudes horizontally rearward from the entire length of the planar arc-shaped upper end of the abutment portion 73 and has a planar arc-shaped locking plate portion 73d that is placed on the flange portion 21c of the receiving portion 21b at the first connection portion 21 of the waterstop A when the locking portion 73c of the end member 7 is engaged with the receiving portion 21b of the first connection portion 21 of the waterstop A, and a concave arc-shaped locking inclined portion 73e that extends diagonally downward and rearward from the rear end of the locking plate portion 73d and is arranged along the funnel-shaped inclined surface 21f of the receiving portion 21b when the locking portion 73c of the end member 7 is engaged with the receiving portion 21b of the first connection portion 21 of the waterstop A.

[0059] The width of the locking plate portion 73d of the end member 7 is between the width of the flange portion 21c of the receiving portion 21b at the first connection portion 21 of the waterstop A and the width of the locking plate portion 22c at the second connection portion 22 of the waterstop A, so that the locking portion 22b of the second connection portion 22 of the waterstop A can be freely engaged and detached with the locking plate portion 73d of the end member 7, and the locking portion 73c of the end member 7 can be freely engaged and detached with the flange portion 21c of the receiving portion 21b at the first connection portion 21 of the waterstop A.

[0060] Next, we will explain how to use the waterstop A. The waterstop A is used to construct a waterstop wall C by connecting multiple waterstops A, A... in the left-right direction on a desired waterstop wall construction surface B, such as a road or building opening where floodwater may enter or is expected to enter (see Figure 13).

[0061] To connect and integrate the waterstops A, A in the left-right direction, the second abutment surface 22a of the waterstop A arranged on the right side is brought into contact with the first abutment surface 21a of the first connection part 21 of the waterstop A arranged on the left side from the front, and the locking part 22b of the second connection part 22 of the waterstop A arranged on the right side is detachably locked to the receiving part 21b of the first connection part 21 of the waterstop A arranged on the left side (see FIG. 14, for example). In this state, the locking piece 22e of the second connection part 22 of the waterstop A is locked to one of the locking protrusions 21d of the receiving part 21b of the first connection part 21 of the waterstop A according to the connection angle α of the upright parts 2 of the waterstops A, A connected in the left-right direction. In the following, of the two waterstops A, A connected or in a connected state from left to right, the waterstop A arranged on the left side may be referred to as the "left side waterstop" and the waterstop A arranged on the right side may be referred to as the "right side waterstop."

[0062] Thereafter, the pile member 6 is driven into the receiving portion 21b of the first connection portion 21 of the left waterstop plate A, and the locking plate portion 22c of the second connection portion 22 of the right waterstop plate A is pressed onto the flange portion 21c of the first connection portion 21 of the left waterstop plate A, and the first abutment surface 21a of the left waterstop plate A and the second abutment surface 22a of the right waterstop plate A are generally abutted along their entire length in the vertical direction, and the waterstop plates A, A can be fixed in a connected state in the left-right direction so that they are not displaced relative to each other.

[0063] In the manner described above, the waterstop plates A can be connected in the left-right direction while setting the connection angle α between the upright portions 2 of the waterstop plates A and A at the desired angle to construct a waterstop wall C.

[0064] 8 is a plan view showing a state in which the waterstops A, A are connected in the left-right direction so that their upright portions 2, 2 are positioned in a straight line (connection angle α of the upright portions = 0°). In this state, the shape of the central portion 51a1 in the length direction of the main body portion 51a of the first lower engagement step 51 formed on the underside of the bottom portion 1 of the right-side waterstop A is engaged with the shape of the right end portion 42a1 of the main body portion 42a of the second upper engagement step 42 formed on the top surface of the bottom portion 1 of the left-side waterstop A.

[0065] Furthermore, the remaining portion 52b1 excluding the front end portion of the left side portion 52b of the second lower engagement step 52 formed on the bottom 1 of the right side waterstop A is engaged with the right end portion 1c2 of the front edge of the right side portion 1c of the bottom 1 of the left side waterstop A.

[0066] 7 is a plan view showing a state in which the waterstops A, A are connected in the left-right direction with the standing part 2 of the right waterstop A positioned a predetermined angle (connection angle α of the standing parts = 30°) forward of the standing part 2 of the left waterstop A. In this state, the remaining part of the right waterstop A excluding the rear end part of the first lower engagement step 51 and the remaining part of the left waterstop A excluding the front end part of the second upper engagement step 42 are engaged with each other.

[0067] Furthermore, the left side portion 52b of the second lower engagement step 52 in the right-side waterstop A is partially engaged with the portion extending from the right end portion 1a1 of the front edge at the central portion 1a of the bottom 1 in the left-side waterstop A to the left end portion 1c1 of the front edge at the right side portion 1c of the bottom 1.

[0068] As described above, at a predetermined connection angle α of the upright portions, the upper and lower engagement steps 4, 5 formed on the bottom 1 of the left and right connected waterstops A and A are partially engaged with each other, and / or the front edge of the bottom of the left waterstop A and the lower engagement step 5 of the right waterstop A are partially engaged with each other, and the right waterstop A is restricted from rotating in a clockwise direction relative to the left waterstop A when viewed in a plan view.

[0069] Furthermore, the locking protrusion 21d of the receiving portion 21b of the first connection portion 21 of the left side waterstop plate A is engaged from the left side by the locking piece 22e of the locking portion 22b of the second connection portion 22 of the right side waterstop plate A, restricting the right side waterstop plate A from rotating counterclockwise relative to the left side waterstop plate A.

[0070] Therefore, in addition to fixation by the pile members 6 at the first connection portion 21 and the second connection portion 22 of the waterstop plate A, the relative rotational displacement of the left and right waterstop plates A, A is also regulated by the above-mentioned engagement, and the waterstop plates A, A connected in the left-right direction are connected in the left-right direction while reliably maintaining the connection angle α of these upright portions 2, 2, thereby forming a sturdy waterstop wall C.

[0071] When connecting and integrating waterstop plates A, A in the left-right direction to construct a waterstop wall, the connection angle α of the upright portions 2, 2 of the waterstop plates A, A that are connected in the left-right direction, the connection angle α of the upright portions 2, 2 that are frequently used is generally fixed, so it is sufficient that the upper and lower engagement steps 4, 5 of the bottom 1 of the waterstop plate A are formed so that engagement between the upper and lower engagement steps 4, 5 of the left and right waterstop plates A, A, and / or engagement between the front peripheral edge of the bottom 1 of one waterstop plate A and the lower engagement step 5 of the other waterstop plate A is formed at the connection angle α of the upright portions 2, 2 that is frequently used.

[0072] According to the above-mentioned waterstop A, a plurality of locking protrusions 21d are formed at predetermined intervals in the circumferential direction on the annular flange portion 21c of the receiving portion 21b at the first connection portion 21 of the waterstop A, and a desired one of these locking protrusions 21d can be engaged with the locking piece 22e of the locking portion 22b at the second connection portion 22 of another waterstop A, so that the right side waterstop A can be connected and integrated with the left side waterstop A at a desired connection angle α of the upright portion so that counterclockwise rotation is restricted when viewed from above relative to the left side waterstop A.

[0073] In this way, according to the above-mentioned waterstop plate A, the left side waterstop plate A is placed on the waterstop wall construction surface B, and while hooking the engaging portion 22b of the right side waterstop plate A onto the receiving portion 21b of the left side waterstop plate A, the right side waterstop plate A is rotated around the receiving portion 21b of the left side waterstop plate A, and the right side waterstop plate A is arranged so that the connection angle α of the upright portion is desired relative to the left side waterstop plate A.Then, by driving the pile member 6 into the receiving portion 21b of the left side waterstop plate A, the right side waterstop plate A is fixed to the left side waterstop plate A, and the right side waterstop plate A can be easily connected and integrated with the left side waterstop plate A at the desired connection angle α.

[0074] Furthermore, as shown in Figures 2 and 6, an engaging edge 13a of a constant height protrudes upwardly along the entire length of the right edge of the upper surface of the bottom 1 of the waterstop A, while an engaging edge 12a of a constant height is formed along the entire length of the left edge of the lower surface of the bottom 1 of the waterstop A and the front corner of the left part 1b.

[0075] Then, as shown in Figure 10, when the locking piece 22e of the locking portion 22b at the second connection portion 22 of the right-side waterstop plate A is engaged with the right-most locking protrusion 21d of the locking protrusions 21d of the receiving portion 21b at the first connection portion 21 of the left-side waterstop plate A, the engagement edge portion 13a on the upper surface of the bottom 1 of the left-side waterstop plate A engages with the engagement edge portion 12a on the lower surface of the bottom 1 of the right-side waterstop plate A, and the right-side waterstop plate A can be connected and integrated in a state in which counterclockwise rotation of the right-side waterstop plate A is restricted when viewed from above.

[0076] Then, by repeating the same procedure as described above, with the right-side waterstop A of waterstop plates A connected in the left-right direction as the left-side waterstop A, and adjusting the connection angle α of the upright portion of waterstop plate A as appropriate to the desired angle, a waterstop wall C having the desired shape can be easily constructed on the waterstop wall construction surface B in a short period of time (see Figure 13).

[0077] Furthermore, when there is a step on the waterstop-wall construction surface B, as shown in Figures 15 to 17, in waterstop plates A, A that are connected at the step on the waterstop-wall construction surface B, the first abutment surface 73a of the end member 7 is abutted from behind against the second abutment surface 22a of the second connection portion 22 of the waterstop plate (hereinafter sometimes referred to as the "left end waterstop plate") A1 that constitutes the left end of the right-side waterstop wall C1 (hereinafter sometimes referred to as the "right-side waterstop wall"). Furthermore, the locking plate portion 22c of the second connection portion 22 of the left end waterstop plate A1 is placed on the locking plate portion 73d of the locking portion 73c of the end member 7, and the locking inclined portion 22d of the second connection portion 22 of the left end waterstop plate A1 is aligned with the locking inclined portion 73e of the locking portion 73c of the end member 7, so that the locking portion 22b of the second connection portion 22 of the left end waterstop plate A1 is engaged with the locking portion 73c of the end member 7 in a state in which it can be freely engaged and disengaged, and the end member 7 is arranged so that its left side upright portion 72a forms a predetermined angle with respect to the upright portion 2 of the left end waterstop plate A1.

[0078] In addition, Figure 16 shows a case where the end member 7 is arranged in a state where the base end of the left side standing portion 72a of the end member 7 coincides with the left edge of the bottom 1 of the left end waterstop A1, but the end member 7 may also be arranged in a state where the left side standing portion 72a of the end member 7 is spaced away from the left edge of the bottom 1 of the left end waterstop A1.

[0079] Furthermore, in the waterstop plates A, A which are connected at a step on the waterstop wall construction surface B, the second abutment surface 73b of the end member 7 is abutted from the front against the first abutment surface 21a of the first connection portion 21 of the waterstop plate (hereinafter sometimes referred to as the "right end waterstop plate") A2 which constitutes the right end of the left-side waterstop wall C2 (hereinafter sometimes referred to as the "left side waterstop wall"). Furthermore, the locking plate portion 73d of the locking portion 73c of the end member 7 is placed on the flange portion 21c of the first connection portion 21 of the right end waterstop A2, and the locking inclined portion 73e of the locking portion 73c of the end member 7 is aligned with the inclined surface 21f of the first connection portion 21 of the right end waterstop A1, and the locking portion 73c of the end member 7 is locked to the receiving portion 21b of the first connection portion 21 of the right end waterstop A2.Then, the pile member 6 is driven into the receiving portion 21b of the first connection portion 21 of the right end waterstop A2, and the end member 7 is arranged and fixed at a predetermined angle to the right end waterstop A1.

[0080] In addition, Figure 16 shows the case where the end member 7 is arranged on the right end waterstop plate A2 with the left side standing portion 72a of the end member 7 in close contact with the front surface of the standing portion 2 of the right end waterstop plate A2, but the end member 7 may also be arranged on the right end waterstop plate A2 with the left side standing portion 72a of the end member 7 spaced apart from the front surface of the standing portion 2 of the right end waterstop plate A2.

[0081] Thereafter, as shown in Figures 16 and 17, the left side upright portion 72a of the end member 7 arranged on the right end waterstop plate A1 and the right side upright portion 72b of the end member 7 arranged on the left end waterstop plate A2 are arranged so that their opposing surfaces are in close contact with each other, thereby absorbing the step formed on the waterstop wall construction surface B and connecting and integrating the left and right waterstop walls via the end members 7, 7 to construct a single waterstop wall C.

[0082] The waterstop wall C constructed on the waterstop wall construction surface B as described above may be constructed on any waterstop wall construction surface B such as an opening in a road or building where floodwater may enter or is expected to enter, and used for waterstop purposes. In addition, the waterstop wall may be constructed within a water flow path using a waterstop plate, and this waterstop wall may be used as a wall part of the flow path to change the flow direction of a fluid such as water flowing within the flow path, thereby flowing the fluid in a desired direction. [Explanation of symbols]

[0083] 1 bottom 2 Standing part 21 First connection part 21a 1st contact surface 21b Receptacle 21c Flange part 21d Locking protrusion 21e Through hole 21f slope 22 Second connection part 22a Second contact surface 22b Locking part 22c Locking plate part 22d Locking slope part 22e Locking piece 4 Upper engagement step 5 Lower engagement step 7 End members 71 Bottom 73 Contact part 73a 1st contact surface 73b Second contact surface 73c Locking part 73d Flange part A Water Stop B. Water cutoff wall construction surface α Connection angle

Claims

1. A water stop plate that can be connected in the left-right direction to form a water stop wall, A bottom portion to be placed on a water cutoff wall construction surface on which the water cutoff wall is constructed; and a rising portion extending upward from the rear of the bottom portion, The upright portion has a first connection portion at one end thereof, and a second connection portion at the other end thereof that is detachably connected and fixed to the first connection portion of the waterstop plate that is adjacently connected in the left-right direction in a state in which the upright portions of the waterstop plates that are adjacently connected in the left-right direction are connected to each other at a desired angle, A waterstop plate characterized in that the first connection portion has a convex arc-shaped first abutment surface formed at one end of the upright portion and curved in the direction of change in the connection angle of the upright portions of the waterstop plates that are connected adjacent to each other, and the second connection portion has a concave arc-shaped second abutment surface that abuts against the first abutment surface.

2. A water stop as described in claim 1, characterized in that the first connection portion has an arc-shaped receiving portion, and the second connection portion has a locking portion that can be freely engaged and detached at a desired position on the receiving portion.

3. A water stop plate as described in claim 2, characterized in that the first connection portion has a receiving portion at an upper end of the first abutment surface, while the second connection portion has a locking portion at an upper end of the second abutment surface.

4. 4. The waterstop according to claim 2 or 3, wherein the receiving portion of the first connection portion is formed in an annular shape.

5. A waterstop plate as described in any one of claims 2 to 4, characterized in that the engaging portion of the second connection part is fixed to the receiving portion of the first connection part by driving a pile member into the receiving portion of the first connection part.

6. A waterstop plate as described in any one of claims 1 to 5, characterized in that the bottom of the waterstop plate has an upper engagement step formed on its upper surface and a lower engagement step formed on its lower surface, and in waterstop plates connected adjacent to each other in the left-right direction, the lower engagement step of the bottom of the waterstop plate that is arranged overlapping on the upper side is configured to engage with a predetermined portion of the upper engagement step of the bottom of the waterstop plate that is arranged overlapping on the lower side, at at least one connection angle of the upright portions of the waterstop plates connected in the left-right direction.

7. A waterstop plate as described in claim 6, characterized in that the lower engagement step portion of the bottom of the waterstop plate arranged overlapping on the upper side is configured to engage with a predetermined portion of the outer peripheral edge of the bottom of the waterstop plate arranged overlapping on the lower side at at least one connection angle of the upright portions of the waterstop plates connected in the left-right direction.

8. 8. The waterstop according to claim 6, wherein the upper and lower engaging steps formed on the bottom of the waterstop are formed to have the same shape when projected in the vertical direction.

9. a locking protrusion is formed on the receiving portion of the first connection portion, and the locking portion of the second connection portion has a locking piece that is locked to the locking protrusion, A waterstop plate as described in any one of claims 6 to 8, characterized in that in a waterstop plate connected adjacently in the left-right direction, the direction of rotation restriction by engagement between the locking protrusion of the first connection part and the locking piece of the locking part of the second connection part is opposite to the direction of rotation restriction by engagement between the upper and lower engagement steps of the bottom part.

10. A plurality of upper and lower engagement steps are formed on the upper and lower surfaces of the bottom, A waterstop plate as described in any one of claims 6 to 9, characterized in that when the upright portions of waterstop plates connected in the left-right direction are connected at at least one connection angle, at least one lower engagement step formed on the bottom of the waterstop plate that is arranged overlapping on the upper side has a portion of its shape formed to match the portion of an upper engagement step formed on the bottom of the waterstop plate that is arranged overlapping on the lower side.

11. A water stop according to any one of claims 1 to 10, characterized in that the surface area of ​​the bottom portion is larger than the surface area of ​​the upright portion.

12. A waterstop wall characterized in that a plurality of waterstops as described in any one of claims 1 to 11 are connected and integrated in the left-right direction by connecting and fixing the second abutment surface of the second connection portion of one waterstop to the first connection portion of the other waterstop, with the second abutment surface of the second connection portion of one waterstop being abutted against the first abutment surface of the first connection portion of the other waterstop, in adjacent waterstops.

13. A water-stopping wall constructed by making the two water-stopping walls described in claim 12 a right-side water-stopping wall and a left-side water-stopping wall, respectively, connecting an end member to a left-end water-stopping plate constituting the left end of the right-side water-stopping wall, and connecting an end member to a right-end water-stopping plate constituting the right end of the left-side water-stopping wall, and tightly fitting the end member connected to the left-end water-stopping plate and the end member connected to the right-end water-stopping plate, A water-stopping wall characterized in that the end member has a fan-shaped bottom, a standing portion protruding upward from the rear of the bottom, and an abutment portion formed by bulging forward between the opposing portions of the standing portion, and the abutment portion has its front peripheral surface formed as a first abutment surface that abuts and is connected to the second abutment surface of the waterstop plate, and its rear peripheral surface formed as a second abutment surface that abuts and is connected to the first abutment surface of the waterstop plate.

Images