Water stop device

Abstract

To prevent the formation of a gap between a water stop body and a watertight material of a column body.SOLUTION: A water stop device comprises a water stop body 10 provided so as to intersect an assumed flow direction, and a column body 20X that supports an end portion side of the water stop body 10 in a width direction from a downstream side. The water stop body 10 is provided with a water stop body side elastic watertight material 10X that protrudes to a downstream side so as to face the column body 20X and also protrudes downward so as to be pressed against a fixed portion on a lower side. The column body 20X is provided with a column body side elastic watertight material 36 that is pressed against the protruding portion on the downstream side of the water stop body side elastic watertight material 10X and also protrudes downward so as to be pressed against the fixed portion on the lower side. The column body side elastic watertight material 36 includes a lower side elastic layer 36a pressed against the fixed portion on the lower side, and an upper elastic layer 36b overlapping the upper side of the lower elastic layer 36a. The lower elastic layer 36a has a smaller hardness than the upper elastic layer 36b.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a water stop device in which a water stop body is supported by a pillar body on the end side in the width direction. [Background technology]

[0002] Conventionally, when rising water caused by a typhoon or heavy rain enters an opening in the structure of a building, an underground passage, etc., there is a risk of causing serious damage due to flooding. To prepare for such an event, a water stop device is known that blocks the opening in the structure of a building, an underground passage, etc. with a water stop plate to prevent water from entering. In addition, in such a water-stopping device, if the width of the opening in the main body is relatively large, two water-stopping bodies are provided adjacent to each other on the left and right, and these two water-stopping plates are supported from the downstream side by a center pillar in the center (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-184754 Summary of the Invention [Problem to be solved by the invention]

[0004] However, according to the above-mentioned conventional technology, there is a possibility that a gap may form between the water stop plate and the center column and the water stop material (rubber, etc.) at the lower end thereof, and this gap may become a water passageway, thereby reducing the water stop performance. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention is provided with the following configuration. A water-stopping device comprising a water-stopping body arranged so as to intersect with the expected flow direction, and a pillar body that receives and supports the end side of the water-stopping body in the width direction from the downstream side, wherein the water-stopping body is provided with a water-stopping body-side elastic watertight material that protrudes downstream to face the pillar body and also protrudes downward and is pressed against the lower immovable part, and the pillar body is provided with a pillar body-side elastic watertight material that is pressed against the downstream protruding part of the water-stopping body-side elastic watertight material and also protrudes downward and is pressed against the lower immovable part, and the pillar body-side elastic watertight material has a lower elastic layer that is pressed against the lower immovable part, and an upper elastic layer that overlaps the upper side of the lower elastic layer, and the lower elastic layer has a lower hardness than the upper elastic layer. [Effects of the Invention]

[0006] Since the present invention is configured as described above, it is possible to prevent gaps from being formed between the watertight material of the waterstop body and the pillar body. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing an example of a waterproofing device according to the present invention. [Figure 2] FIG. 2 is a perspective view showing the water stop device with the water stop body removed from the pillar body. [Figure 3] FIG. [Figure 4] FIG. 2 is a perspective view showing the configuration of the water-stopping body-side elastic watertight material. [Figure 5] This is a perspective view showing the lower side of the side pillar (pillar body). [Figure 6] FIG. 1 is a perspective view showing the lower side of the center pillar (pillar body). [Figure 7] FIG. 2 is a plan view showing the water stop body attached to the pillar body in the water stop device. [Figure 8] FIG. 2 is a plan view showing the water stop device with the water stop body attached to the pillar body. [Figure 9] FIG. 9 is a longitudinal cross-sectional view taken along line (VIII)-(VIII) in FIG. 8. [Figure 10]10 is a perspective view showing the contact portion between the water-stopping body side elastic watertight material and the column body side elastic watertight material. FIG. [Figure 11] 8. FIG. 9 is an enlarged longitudinal cross-sectional view showing a contact portion between the water-stopping-body-side elastic watertight material and the pillar-side elastic watertight material, taken along the line (VIII)-(VIII) in FIG. [Figure 12] 12 is a longitudinal cross-sectional view showing an enlarged contact portion between the water-stopping body-side elastic watertight material and the column body-side elastic watertight material before improvement, taken at the cross-sectional position of FIG. 11. FIG. [Figure 13] FIG. 10 is a diagram illustrating an example of a water leakage path. DETAILED DESCRIPTION OF THE INVENTION

[0008] Next, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the term "upstream side" refers to the upstream side in the expected direction of water flow, and the term "downstream side" refers to the downstream side in the expected direction of water flow, that is, the opposite side to the upstream side. In this embodiment, it is assumed that water flows from the outdoor side to the indoor side.

[0009] The water stop device 1 comprises water stop bodies 10, 10 arranged on both the left and right sides approximately perpendicular to the expected water flow direction, and pillar bodies 20X (side pillars 20 and center pillars 30) that support the end sides of each water stop body 10 in the width direction from the downstream side (see Figures 1 and 2).

[0010] Each water stop body 10 integrally comprises a horizontally elongated rectangular main body plate 11, lower engaging protrusions 12 protruding to the left and right sides from the underside of the main body plate 11, upper engaging protrusions 13 protruding to the left and right sides above the lower engaging protrusions 12 of the main body plate 11, latch devices 14 that engage and disengage with the side columns 20 and center columns 30 on both the left and right sides, a plurality of handles 15 provided on one surface of the main body plate 11 (the upstream side in the illustrated example), and a water stop body side elastic watertight material 10X (see Figure 4) that protrudes downstream to face the column body 20X and also protrudes downward.

[0011] The main body plate 11 is formed in a horizontally elongated rectangular shape from a hard material such as metal, and one end and the other end of the main body plate 11 overlap with the water stop receiving surface 21a1 (see Figure 5) of the side column 20 and the water stop receiving surface 31a (see Figure 6) of the center column 30, respectively, via the vertical watertight material 16. According to the illustrated example, the main body plate 11 is made up of a hollow, horizontally elongated rectangular member formed by drawing, and members covering both side surfaces of this member.

[0012] The tip of each lower engaging protrusion 12 and each upper engaging protrusion 13 is configured as a rollable roller, and engages with the lower engaged portion 22 and the upper engaged portion 23 of the side column 20 or the center column 30 from the upstream side.

[0013] The elastic watertight material 10X on the waterstop side is composed of left and right vertical watertight materials 16, 16 that are pressed against the side columns 20 and center columns 30 in a continuous vertical direction on both sides of the width of the main board 11, a horizontal watertight material 17 that is pressed against the lower immovable part (the lower immovable surface F or the upper end of the lower waterstop 10) in a continuous horizontal direction at the lower end of the main board 11, a first auxiliary watertight material 18 provided on the upper end of the main board 11 and the vertical watertight material 16, and a second auxiliary watertight material 19 that connects the lower end of the vertical watertight material 16 to the horizontal watertight material 17 (see Figures 3 and 4).

[0014] The vertical watertight material 16, the horizontal watertight material 17, and the second auxiliary watertight material 19 are formed into an elongated shape with a substantially convex cross section from an elastic material such as rubber or elastomer resin. In one example of this embodiment, these watertight materials are formed from sponge-like ethylene propylene rubber (EPSP). The first auxiliary watertight material 18 is formed from a flat elastic material (for example, rubber or elastomer resin).

[0015] The vertical watertight members 16 are provided on the left and right end sides of the downstream surface of the main body plate 11, extending in the vertical direction. This vertical watertight member 16 is fixed to the downstream side of the main body plate 11 by fitting via a bracket or the like, and protrudes downstream from the main body plate 11.

[0016] When the water stop body 10 is attached to the side pillar 20 and the center pillar 30, the left and right vertical watertight materials 16, 16 are continuously pressed against the water stop body receiving surface 21a1 of the side pillar 20 and the water stop body receiving surface 31a of the center pillar 30 in the vertical direction, respectively, and are elastically deformed.

[0017] The lateral watertight member 17 is provided in a long strip shape extending horizontally at the lower end of the main body plate 11 . Both longitudinal ends of the lateral watertight member 17 are in watertight contact with the second auxiliary watertight member 19 (see FIGS. 3 and 4). When the watertight body 10 is placed on the lower immovable part (the lower immovable surface F or the upper end surface of the adjacent watertight body 10 below), the lateral watertight material 17 and the second auxiliary watertight material 19 are watertightly pressed against this immovable part and elastically deformed.

[0018] The first auxiliary watertight material 18 is provided in the form of a flat plate extending in the thickness direction of the main plate 11 at the end side of the width direction of the main plate 11, and is in contact with the upper end of the vertical watertight material 16 (see Figures 3 and 4). This first auxiliary watertight material 18 is sandwiched between the lower end of the vertical watertight material 16 of the upper watertight body 10 and the upper end of the vertical watertight material 16 of the adjacent lower watertight body 10, thereby improving the watertightness between them.

[0019] The second auxiliary watertight material 19 is in contact with the lower end surface of the main plate 11 and the lower end surface of the vertical watertight material 16 at one end side of the width of the main plate 11, and also in contact with the widthwise end of the horizontal watertight material 17, so that no gaps are created between these components and between them and the lower fixed part (the lower fixed surface F or the upper end of the lower waterstop 10) (see Figures 3 and 4).

[0020] <About the column> The pillar body 20X includes side pillars 20, 20 located on both the left and right sides of the two water stopping bodies 10, 10, and a center pillar 30 located on the center side of the two water stopping bodies 10, 10.

[0021] The left and right side pillars 20, 20 support each water stop body 10 at its end in the width direction. Each side post 20 comprises a side post main body 21 that is arranged approximately perpendicular to the lower fixed surface F and extends in the vertical direction, a lower engaged portion 22 provided on this side post main body 21, and an upper engaged portion 23 that is provided on the same side post main body 21 above the lower engaged portion 22 (see Figure 5). According to this embodiment, a plurality of pairs of the lower engaged portion 22 and the upper engaged portion 23 are provided in the vertical direction so as to correspond to the plurality of water stopping bodies 10, respectively (see FIG. 2).

[0022] The side pillars 20, 20 on both sides are connected in a watertight manner to the facing surfaces W1 on both sides of a skeleton opening A in a building, an underground passage, or the like. Here, the visible surface W1 is the upstream visible surface of the pillars, walls, etc. that constitute the skeleton, located on both sides of the skeleton opening A (see Figures 7 and 8). Also, in the figures, the symbol W2 indicates the visible surface of the pillars, walls, etc.

[0023] The side pillar body 21 is made up of a base pillar 21a fixed to the facing surface W1 on both sides of the frame opening A, and a support pillar 21b that protrudes upstream from the base pillar 21a and supports the water stop body 10. The cross section of the side pillar body 21 is integrated into an L-shaped body and extends vertically. The side pillar body 21 is installed so as to straddle multiple stacked water stop bodies 10 in the vertical direction.

[0024] According to the illustrated example, the base pillar 21a is a columnar member extending in the vertical direction, and has a water stop body receiving surface 21a1 for receiving the water stop body 10 on its upstream side, closer to the inside in the width direction between the two supports, and a support pillar 21b is attached closer to the outside in the same width direction.

[0025] A substantially plate-shaped elastic watertight member 21c is provided at the lower end of the base pillar 21a, and is made of an elastic material such as rubber or elastomer resin. This elastic watertight material 21c is pressed against the downstream protruding portion of the water-stopping body side elastic watertight material 10X (more specifically, the second auxiliary watertight material 19) and protrudes downward to be watertightly pressed against the lower immovable portion (in the illustrated example, the lower immovable surface F).

[0026] The support column 21b is formed by bending a hard metal plate material, for example, into an elongated shape with a substantially U-shaped cross section extending in the vertical direction. The support pillar 21b constituting the left side pillar body 21 and the support pillar 21b constituting the right side pillar body 21 are symmetrical in shape, with openings of their roughly U-shaped cross sections facing each other.

[0027] A lower engaged portion 22 and an upper engaged portion 23 are attached to the inner surface of the support column 21b.

[0028] The support pillar 21b has a plate-shaped portion 21b1 at its upstream portion, which is disposed in a direction intersecting the water flow. The plate-shaped portion 21b1 is located upstream of the lower engaged portion 22 and the upper engaged portion . The plate-shaped portion 21b1 is provided with an opening 21b11 for inserting the lower engaging protrusion 12 from the upstream side, and an opening 21b12 for inserting the upper engaging protrusion 13 from the upstream side.

[0029] The lower edge portion of the upper opening 21b12 in the plate-shaped portion 21b1 functions as an upward protruding stopper portion 21b13 that receives the upper engaging protrusion 13 from the upstream side and stops the tilting when the upper side of the water stop body 10 tilts upstream due to vibration or the like when the latch device 14 is not engaged.

[0030] The lower engaged portion 22 has a protrusion 22a that protrudes upward near the upstream end and functions as a retainer for the lower engaging protrusion 12, and an inclined bottom portion 22b that is downstream of this protrusion 22a and guides the lower engaging protrusion 12 diagonally downward downstream.

[0031] A concave curved surface portion 22b1 is provided at a midpoint on the inclined bottom surface portion 22b toward the downstream side. This concave curved surface portion 22b1 fits into the lower portion of the lower engaging protrusion 12 to position the lower engaging protrusion 12 when the water stop body 10 is attached to the both side pillars 20, 20.

[0032] The upper engaged portion 23 has an inclined top surface portion 23a that guides the upper engaging protrusion 13 diagonally downward downstream, and an engaging top surface portion 23b that contacts the upper end of the upper engaging protrusion 13 when the upper engaging protrusion 13 moves downstream from the inclined top surface portion 23a (see Figure 5).

[0033] The inclined top surface portion 23a guides the upper engaging protrusion 13 diagonally downward downstream when the water stop body 10 is fitted between the side posts 20 and the center post 30 from the upstream side. As a result, the left and right vertical watertight materials 16 are pressed against the water stop body receiving surface 21a1 of the side posts 20 and the water stop body receiving surface 31a of the center post 30, respectively, and elastically contract, and the horizontal watertight materials 17 are also pressed against the lower immovable portion (the lower immovable surface F or the upper end of the lower water stop body 10) and elastically contract.

[0034] The locking top surface portion 23b extends substantially horizontally downstream. When the water stop body 10 is fitted further downstream, the locking top surface portion 23b presses against the upper end of the upper engaged portion 23, thereby maintaining the vertical watertight member 16 and the horizontal watertight member 17 in a compressed state.

[0035] <About the center pillar> The center column 30 comprises a center column main body 31 that receives the left and right water-stopping bodies 10, 10 from the downstream side, two support columns 21b', 21b' attached to the center column main body 31 so as to support the left and right water-stopping bodies 10, 10 between them, an upstream support part 32 that protrudes from the center column main body 31 upstream in the flow direction and is fastened to the lower fixed surface F, and a column-side elastic water-tight material 36 that is pressed against the downstream protruding part of the water-stopping body-side elastic water-tight material 10X (more specifically, the second auxiliary water-tight material 19) and also protrudes downward to press against the lower fixed part (in the illustrated example, the lower fixed surface F) (see Figures 10 and 11).

[0036] The center pillar body 31 is a long pillar-shaped member having a generally laterally convex cross section that continues in the vertical direction. The center pillar body 31 is provided with left and right water stop body receiving surfaces 31a, 31a that receive the left and right water stop bodies 10, 10, respectively.

[0037] Each water stop body receiving surface 31a of the center pillar body 31 is a surface facing the direction (upstream side) from which the upstream support part 32 protrudes, and is formed as a flat surface that continues in the vertical direction. The vertical watertight material 16 of the water stop body 10 is pressed against this water stop body receiving surface 31a.

[0038] The center pillar body 31 is also provided with a support pillar mounting surface 31b for mounting the support pillar 21b', so as to be positioned between the left and right water stop body receiving surfaces 31a, 31a (see FIG. 7).

[0039] Two support pole mounting surfaces 31b are provided on the left and right corresponding to the left and right water stopping bodies 10, 10. Each support pillar mounting surface 31b is a surface that continues to the water stop body receiving surface 31a of the center pillar main body 31, and is located closer to the center in the width direction than the water stop body receiving surface 31a. The support column 21b' is fixed to this support column mounting surface 31b by appropriate fixing means (for example, fastening with screws, bolts, rivets, etc., welding, fitting, etc.).

[0040] Each support column 21b' is a member having the same configuration as the support column 21b described above. Therefore, in the drawings, the reference numerals of the respective parts of the support column 21b' are the same as those of the support column 21b. The left support pillar 21b' and the right support pillar 21b' are provided symmetrically with their openings of the approximately U-shaped cross section facing back to back.

[0041] The upstream support part 32 is a plate-shaped member made of a hard metal material, and is connected to the lower end of the center column body 31 so as to support the center column body 31 from below, and protrudes further upstream than the center column body 31 and the support column 21b'. This tip side expands in the width direction.

[0042] The upstream part of this upstream support portion 32 is provided with a rolling member 33 that rolls on the lower immovable surface F when the center column 30 is transported, a plurality of adjustment feet 34 that abut against the lower immovable surface F when installed, and a plurality of fastening devices 35 that are fastened to the lower immovable surface F when installed. Furthermore, a column-side elastic watertight material 36 is provided on the downstream side of the upstream support portion 32 via a spacer 37 .

[0043] The rolling members 33 are rollers that rotate around an axis in the width direction, and are provided on both left and right ends on the most upstream side of the upstream support portion 32. When the center post 30 is installed, the rolling member 33 is floating and separated from the lower stationary surface F, and comes into contact with the lower stationary surface F when the center post 30 is tilted.

[0044] The adjustment feet 34 are provided at three locations near the center of the center column body 31 in plan view, and at locations near the left and right rolling members 33, 33. Each adjustment foot 34 is composed of a screw shaft portion 34a that penetrates the upstream support portion 32 in the vertical direction and screws into a nut integrated with the upstream support portion 32, and a disk-shaped seat portion 34b that is integrally formed at the lower end of this screw shaft portion 34a.

[0045] When each adjustment foot 34 is rotated, it faces the upstream support part 32 and moves the adjustment foot 34 in the up and down direction. Therefore, by appropriately adjusting the lengths of the three adjustment feet 34 that abut against the lower immovable surface F, the center pillar 30 can be erected approximately perpendicular to the lower immovable surface F.

[0046] In the illustrated example, the lower immovable surface F is a concrete floor surface. This lower immovable surface F is recessed, and a metal fastening object 40 for firmly fastening the fastener 35 is embedded in this recessed portion (see FIG. 9).

[0047] This fastening body 40 consists of a support plate 41 that is approximately flush with the lower immovable surface F and supports the center column 30 from below, a nut-shaped member 42 fixed to the back surface of this support plate 41 by welding or the like, and reinforcing materials and steel bars that reinforce the support plate 41, and is fixed to the concrete part below by anchor members, with mortar or the like filling the gaps.

[0048] According to the example shown in FIG. 9, each fastener 35 is a bolt, with its head hooked onto the upstream support portion 32 and its threaded portion passing downward through the upstream support portion 32 and screwed onto a nut-like member 42 .

[0049] The pillar-side elastic watertight material 36 is located approximately directly below the center pillar body 31 and is pressed against the lower immovable surface F, which is the lower immovable part. This pillar-side elastic watertight material 36 is composed of a lower elastic layer 36a and an upper elastic layer 36b overlapping and joined to the upper side of this lower elastic layer 36a.

[0050] The lower elastic layer 36a is an elastic material having a lower hardness (softer) than the upper elastic layer 36b and a lower hardness than the second auxiliary watertight material 19 of the water-stopping body side elastic watertight material 10X, and according to a preferred example of this embodiment, is formed from sponge-like ethylene propylene rubber (EPDM).

[0051] The lower elastic layer 36a has a thickness in the vertical direction smaller than that of the upper elastic layer 36b, and preferably has a thickness equal to or less than half the thickness of the upper elastic layer 36b. In a preferred example of this embodiment, the thickness of the upper elastic layer 36b is set to 15 mm, and the thickness of the lower elastic layer 36a is set to 5 mm. As another example, the thickness of the upper elastic layer 36b can be 7 mm and the thickness of the lower elastic layer 36a can be 5 mm, or the thickness of the upper elastic layer 36b can be 7 mm and the thickness of the lower elastic layer 36a can be 3 mm.

[0052] The lower elastic layer 36a gradually protrudes toward the upstream side as it extends downward, and the area of ​​the rectangular cross section gradually increases as it extends downward (see FIGS. 10 and 11). In the illustrated example, the lower elastic layer 36a has a trapezoidal cross section (see FIG. 11) that is continuous in the width direction, and has a protrusion 36a1 that protrudes toward the upstream side.

[0053] The upper elastic layer 36b is a substantially rectangular parallelepiped elastic body integrally joined to the upper end surface of the lower elastic layer 36a, and is made of, for example, chloroprene rubber with a hardness of approximately 60 degrees.

[0054] The spacer 37 is formed in a rectangular parallelepiped shape from a hard material such as synthetic resin or metal, and is located between the lower surface of the upstream support part 32 and the upper surface of the column-side elastic watertight material 36, joining these upper and lower components together. The height of the spacer 37 is set so as to appropriately ensure the adjustment range of the adjustment foot 34 described above.

[0055] In the figure, reference numeral 38 denotes a reinforcing member that is connected across both the center pillar main body 31 and the upstream support portion 32, and in the illustrated example, is formed from a hard metal material or the like in a roughly L-shape when viewed from the side. This reinforcing member 38 reinforces the connection between the center pillar main body 31 and the upstream support part 32 so that the center pillar main body 31 is maintained approximately perpendicular to the upstream support part 32 even when water pressure is applied from the upstream side.

[0056] Furthermore, a tensioning tool 50 is provided between the center post 30 and the lower immovable surface F as required (see Figs. 1 and 2). The tensioning tool 50 is configured, for example, by a turnbuckle or the like, and expands and contracts when rotated. One end of the tensioning tool 50 is connected to the lower fixed surface F, and the other end is connected to the center pillar main body 31. This tensioning device 50 allows the center post 30 to be pulled downward, which in turn generates an upward force between the left and right water stopping bodies 10, 10, preventing the center sides of the two water stopping bodies 10, 10 and the center post 30 from floating up.

[0057] <Installation method and effects of water stop devices> Next, a procedure for installing the waterproofing device 1 having the above-described configuration in the body opening A will be described. According to the example shown in FIG. 7, an opening and closing device 60 is installed inside the body opening A in advance. The opening and closing device 60 is a hinged door in which a door body 62 is opened and closed inside a frame body 61, and the frame body 61 is fastened and fixed to the visible surface W2 on both sides of the opening A of the main body. Other examples of the opening and closing device 60 include a folding door, a sliding door, a shutter device, and other opening and closing devices other than those shown in the drawings.

[0058] First, base columns 21a are fastened and fixed to the facing surfaces W1, W1 on both sides of the body opening A, and further, support columns 21b are fixed to the base columns 21a (see FIG. 7). Furthermore, a center pillar 30 is installed on the center side of the body opening A in the width direction, upstream of the opening / closing device 60 and the sight line W1, so as to be close to the opening / closing device 60. At this time, the water stop body receiving surface 21a1 of the support column 21b and the water stop body receiving surface 31a of the center column 30 are made substantially flush with each other.

[0059] Next, the left and right water stopping bodies 10, 10 are fitted to the left and right sides of the center pillar 30, respectively. The left and right water stopping bodies 10, 10 respectively engage their left and right lower engaging protrusions 12 and upper engaging protrusions 13 with the lower engaged portions 22 and upper engaged portions 23 of the side columns 20 and the lower engaged portions 22 and upper engaged portions 23 of the center columns 30, thereby watertightly closing the body opening A.

[0060] In the above process, the watertight body 10 moves from the diagonally upper upstream side (upper right side according to Figure 11) to the diagonally lower downstream side (lower left side according to Figure 11), bringing the vertical watertight material 16 into contact with the watertight body receiving surface 31a of the center column 30 and pressing the second auxiliary watertight material 19 against the lower immovable portion. Then, the downstream lower end of the second auxiliary watertight material 19 (water-stopping body side elastic watertight material 10X) overlaps and contacts the protrusion 36a1 of the column side elastic watertight material 36, which is pressed against the lower side immovable portion F and protrudes upstream, from diagonally upward upstream (upper right side according to Figure 11). By this overlapping, the lower elastic layer 36a of the waterstop body side elastic watertight material 10X, which has a lower hardness than the second auxiliary watertight material 19, becomes thin and has a relatively large amount of elastic contraction. As a result, gaps are less likely to occur between the column-body-side elastic watertight material 36 and the water-stopping-body-side elastic watertight material 10X, and high watertightness can be maintained.

[0061] That is, if the column-side elastic watertight material 36 is a rectangular parallelepiped elastic body 36' with a single layer structure that does not have a protrusion 36a1, as shown in Figure 12, this elastic body 36' will be pressed against the lower fixed surface F and elastically deformed, causing the upstream end to bulge into an approximately semicircular shape. Therefore, a gap s is formed between the bulging portion 36e' and the lower immovable surface F.

[0062] Therefore, due to this gap s, there is a possibility that a water leakage path p shown in FIG. 13 will be formed between the upstream side and downstream side of the water stop body 10 and the center pillar 30. The water leakage path p is a path of water that passes between the main body plate 11 of the water stop body 10 and the support column 21b' of the center column 30, and passes through the gap s, and heads from the upstream side to the downstream side.

[0063] Furthermore, if there are any unevenness or other irregularities on the lower fixed surface F, the column-side elastic watertight material 36 will elastically deform to absorb these irregularities, thereby preventing the formation of gaps and water leakage due to the unevenness. In other words, if only the relatively thin lower elastic layer 36a is used, there is a risk that the elastic deformation will be insufficient and gaps will be formed due to the unevenness. However, according to this embodiment, the upper elastic layer 36b as well as the lower elastic layer 36a elastically deforms, so that the formation of gaps and water leakage due to the unevenness can be effectively prevented.

[0064] Therefore, according to the water stop device 1 having the above configuration, it is possible to prevent gaps from being formed between the water stop body 10 and the watertight material of the center pillar 30 (pillar body), thereby improving water stop performance.

[0065] <Modification> According to the above embodiment, the column-side elastic watertight material 36 at the lower end of the center column 30 has a two-layer structure consisting of a lower elastic layer 36a and an upper elastic layer 36b, and the lower elastic layer 36a is shaped to protrude upstream as it goes downward, but these watertight material structures can also be applied to the elastic watertight material 21c at the lower end of the side column 20.

[0066] According to the above embodiment, two water-stopping bodies 10, 10 are provided in the width direction, with side pillars 20, 20 provided on both sides of these and a center pillar 30 in the center, but in another example, it is also possible to have a single water-stopping body 10 and side pillars 20, 20 provided on both sides of this water-stopping body 10, and in this other example, the above-mentioned water-tight material structure can be applied to the elastic water-tight material 21c on the lower end side of each side pillar 20.

[0067] Furthermore, as another example, it is possible to provide three or more water-stopping bodies 10, 10 in the width direction, with side columns 20, 20 on both sides of these and a center column 30 in the center of adjacent water-stopping bodies 10, 10, and in this other example, the watertight structure can be applied to the lower end side of the side columns 20 and / or the lower end side of the center column 30.

[0068] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate within the scope of the present invention.

[0069] <Summary> As described above, the above embodiments disclose the following inventions. (1) A water-stopping device comprising a water-stopping body arranged so as to intersect with the expected flow direction, and a pillar body that receives and supports the end side of the water-stopping body in the width direction from the downstream side, wherein the water-stopping body is provided with a water-stopping body-side elastic watertight material that protrudes downstream to face the pillar body and also protrudes downward to be pressed against the lower immovable part, and the pillar body is provided with a pillar body-side elastic watertight material that is pressed against the downstream protruding part of the water-stopping body-side elastic watertight material and also protrudes downward to be pressed against the lower immovable part, the pillar body-side elastic watertight material having a lower elastic layer that is pressed against the lower immovable part, and an upper elastic layer that overlaps the upper side of the lower elastic layer, and the lower elastic layer has a lower hardness than the upper elastic layer (see Figures 1 to 11). (2) The watertight device described in (1) is characterized in that the lower elastic layer has a lower hardness than the watertight elastic material on the watertight body side. (3) The waterproof device according to (1) or (2) (see FIG. 11), wherein the lower elastic layer has a thickness in the vertical direction smaller than that of the upper elastic layer. (4) The waterproof device according to (3) (see FIG. 11) is characterized in that the thickness of the lower elastic layer in the vertical direction is set to half or less of the thickness of the upper elastic layer in the vertical direction. (5) The waterproof device according to any one of (1) to (4) above, characterized in that the lower elastic layer protrudes toward the upstream side as it extends downward (see FIG. 11). (6) The water stopping bodies are provided in a plurality in the width direction, The water stopping device according to any one of (1) to (5) (see Fig. 1, Fig. 2, and Fig. 6 to Fig. 11), characterized in that the pillar body is a center pillar provided between the adjacent water stopping bodies. (7) The watertight device according to any one of (1) to (6), characterized in that the downstream protruding portion of the watertight elastic material on the waterstop body overlaps and contacts from above with the protruding portion of the column body side elastic watertight material that is pressed against the lower immovable portion and protrudes toward the upstream side (see Figure 11). [Explanation of symbols]

[0070] 1:Water stop device 10: Water stop body 11: Main board 10X: Elastic waterproof material on the water stop side 16: Vertical watertight material 17: Lateral watertight material 18: First auxiliary watertight material 19: Second auxiliary watertight material 20: Side pillar 20X: Column 21: Side pillar body 21a: Base pillar 21b,21b': Support pillar 21c: Elastic watertight material 30: Middle pillar 31: Middle pillar body 31a: Water stop receiving surface 32: Upstream support part 34:Adjustment foot 36: Elastic watertight material on the column side 36a: Lower elastic layer 36a1:Protrusion 36b: Upper elastic layer 37: Spacer F: Lower immovable surface p: Water leak path s: gap

Claims

1. A water stop device comprising a water stop body provided so as to intersect with the expected flow direction and a column body that receives and supports the end side of the water stop body in the width direction from the downstream side, The water stop body is provided with a water stop body-side elastic watertight material that protrudes downstream so as to face the column body and also protrudes downward and is pressed against the lower side immovable portion, The pillar is provided with a pillar-side elastic watertight material that is pressed against the downstream protruding portion of the waterstop-side elastic watertight material and that protrudes downward to press against the lower immovable portion, The pillar-side elastic watertight material has a lower elastic layer that is pressed against the lower immovable portion and an upper elastic layer that overlaps the upper side of the lower elastic layer, A waterproof device, wherein the lower elastic layer has a lower hardness than the upper elastic layer.

2. 2. The waterproof device according to claim 1, wherein the lower elastic layer has a hardness lower than that of the waterproof body elastic watertight material.

3. 2. The waterproof device according to claim 1, wherein the lower elastic layer has a thickness in the vertical direction smaller than that of the upper elastic layer.

4. 4. The waterproof device according to claim 3, wherein the thickness of the lower elastic layer in the vertical direction is set to be half or less of the thickness of the upper elastic layer in the vertical direction.

5. 2. The waterproof device according to claim 1, wherein the lower elastic layer protrudes toward the upstream side as it extends downward.

6. The water stopping bodies are provided in a plurality in the width direction, The water stop device according to claim 1, wherein the pillar body is a center pillar provided between adjacent water stop bodies.

7. A water-stopping device as described in any one of claims 1 to 6, characterized in that the protruding portion of the elastic water-tight material on the column side, which is pressed against the lower immovable portion and protrudes upstream, overlaps and contacts the protruding portion on the downstream side of the elastic water-tight material on the water-stopping body side from above.

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