Base plate for muddy ground

Abstract

To provide a base plate for muddy ground that covers the muddy ground so that a person can walk without dirtying his / her feet, is easy to handle, is lightweight and inexpensive, and has no fear of floating on water by rainfall.SOLUTION: A plastic base plate is laid to cover the muddy ground and enables people to walk. Upper projecting parts 3, 3 are arranged in parallel in a horizontal and vertical manner by connecting side parts 5, 5 with each other by a connection part 6. The upper projecting part 3 has a lower end opened box-like shape which has an open lower end and the inside thereof formed in a cavity 9, and mud water of the muddy ground can be accommodated in the cavity 9. The lower surface 12 of the upper surface part 11 of the upper projecting part 3 is positioned above muddy water in the cavity part in a state where the base plate 1 is laid on the muddy ground with the cavity part 9 facing downward. The upper surface 3 has an air vent hole 13 for exhausting air in the cavity 9.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a floor plate for use on muddy ground, and more particularly to a floor plate for use on muddy ground that is laid to cover the muddy ground and allows people to walk on it. [Background technology]

[0002] In areas where the ground is exposed, such as in walkways or vegetable gardens around houses, if drainage is poor, puddles and mud will form after rain, and when people walk through these areas, they will get their shoes, trouser hems, etc. dirty.

[0003] Therefore, floor plates that are laid so as to cover the muddy ground and allow people to walk on the upper surface of the laid part are provided in Patent Documents 1 and 2. These floor plates are made entirely of rubber or plastic, and are appropriately connected to each other at their edges to cover the muddy ground and allow people to walk on the upper surface of the laid part.

[0004] Of these, the rubber flooring is heavy, so there is no risk that the installed flooring will float on water and move due to rainfall, changing its installation state, but it is heavy, making it difficult to carry it home and install it after purchase, and since it is made entirely of rubber, it is expensive. In addition, there is a problem that it is prone to deterioration if it is left installed for a long time. On the other hand, the plastic flooring is lightweight and easy to carry home and install after purchase, but there is a risk that the installed flooring will float on water and move due to rainfall, changing its installation state.

[0005] Here, in relation to Patent Document 1, the buoyancy acting on the floor plate (mat body in Patent Document 1) a will be considered. FIG. 9 shows the floor plate a laid so as to cover the muddy ground b, and shows the state in which muddy water c on the muddy ground b is contained in the lower part of the hollow part e of the upper protrusion part (support part in Patent Document 1) d. Since the upper protrusion part is not provided with any air vent holes, the air present in the upper protrusion part d generates buoyancy as shown by the arrow in FIG. 9. The air present in the upper protrusion part generates buoyancy in this way, but since the floor plate a according to Patent Document 1 is made entirely of rubber as described above and has weight, there is no risk that the laid floor plate will float on water and move due to rainfall, causing its laid state to change. In this case, if the floor plate is made of lightweight plastic, there is a risk that the air present in the upper protrusion part d will generate buoyancy due to rainfall, causing the laid floor plate a to float on water and move, causing its laid state to change. Even if the floor board does not move, when a person walks on the floor board that is raised above the muddy ground, the floor board may sink and soil the shoes, the bottoms of the trousers, etc.

[0006] Incidentally, Patent Document 2 discloses a floor plate made of a flexible rectangular flat plate made of a hard elastic plastic material, with a plurality of through holes for draining water at predetermined intervals on the entire surface. The floor plate is intended to be laid on muddy areas to make it easier for vehicles to pass through. When the floor plate bends due to the weight of a vehicle, air or muddy water can freely flow through the through holes, which prevents the air pressure or muddy water pressure on the underside of the plate from fluctuating with each bending of the plate, which would cause the muddy water to be splashed away or make the muddy condition even worse.

[0007] As is clear from this, the holes described in Patent Document 2 are intended to allow air and muddy water to flow freely every time the floor plate bends, and are not intended to allow air to be evacuated in order to prevent the generation of buoyancy in the floor plate due to rainfall and to ensure the stability of the floor plate when laid. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2024-62895 A [Patent Document 2] Japanese Utility Model Application Publication No. 53-121729 Summary of the Invention [Problem to be solved by the invention]

[0009] To provide a floor plate for use on muddy ground which covers the muddy ground and allows people to walk on it without getting their shoes or trouser hems dirty, is lightweight and easy to handle, can be provided at low cost, and is free from the risk of floating on water and shifting due to rain, causing the installation state to change. [Means for solving the problem]

[0010] In order to solve the above problems, the present invention employs the following means. That is, the first aspect of the muddy ground floor plate according to the present invention is a plastic muddy ground floor plate that is laid to cover the muddy ground to enable people to walk on it, and the upper protrusions are arranged vertically and horizontally by connecting the sides of the upper protrusions directly or through a connecting part. The upper protrusions are box-shaped with an open lower end and a hollow part formed inside, and the hollow part can store muddy water on the muddy ground, and when the floor plate is laid to cover the muddy ground with the hollow part facing downward, the lower surface of the upper part of the upper protrusions is located above the muddy water stored in the hollow part and does not come into contact with the muddy water. The upper part is characterized in that an air vent hole is provided to exhaust the air in the hollow part as muddy water enters the hollow part.

[0011] A second aspect of the present invention is a floor plate for muddy ground in the first aspect, characterized in that all of the upward protrusions are formed in a state in which the base plate, the underside of which is formed as a flat surface, is recessed upwardly with the connecting parts between them, and a lattice-like surface portion consisting of the undersides of the connecting pieces is formed on the underside of the floor plate.

[0012] A third aspect of the floor plate for use on muddy ground according to the present invention is characterized in that, in the first aspect, the upward protrusion is formed in a frustum shape that narrows upwardly.

[0013] A fourth aspect of the floor board for use on muddy ground according to the present invention is the first aspect, characterized in that the air vent hole is provided in the central part of the upper surface.

[0014] A fifth aspect of the floor plate for muddy ground of the present invention is characterized in that, in the first aspect, the height of the upward protrusion is set to 30 to 50 mm, and the diameter of the air vent hole is set to 3 to 10 mm.

[0015] A sixth aspect of the floor board for use on muddy ground according to the present invention is the first aspect, characterized in that an anti-slip protrusion is provided on the upper surface of the upper surface portion of the upward protrusion. Effect of the Invention

[0016] To provide a floor plate for a muddy ground which covers the muddy ground, enables people to walk without soiling their shoes or the bottoms of their trousers, is lightweight and easy to handle, can be provided at low cost, and is free from the risk of floating on water and moving due to rainfall, causing the installed state to change, etc. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a perspective view showing a floor plate according to the present invention. [Diagram 2] FIG. [Diagram 3]FIG. [Figure 4] FIG. [Diagram 5] FIG. 11 is a plan view showing an example of a state in which floor plates are connected to each other. [Figure 6] FIG. 11 is a plan view showing another example of the state in which the floor plates are connected to each other. [Figure 7] FIG. 4 is a perspective view illustrating a connecting means for connecting the floor plates to each other. [Figure 8] 11 is a cross-sectional view illustrating a process of connecting floor plates to each other by a connecting means. FIG. [Figure 9] FIG. 1 is a cross-sectional view showing a conventional floor plate laid so as to cover a muddy ground. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0018] In Figs. 1 to 4 and 7, the muddy ground floor plate (hereinafter also referred to as the muddy ground plate) 1 according to the present invention is integrally formed, for example, by injection molding, and is laid so as to cover the muddy ground 2 that becomes muddy due to rainfall, allowing people to walk on it. It is made of plastic, and the side parts 5, 5 of the upwardly protruding parts 3 that protrude upward are connected to each other via a connecting part 6, so that the upwardly protruding parts 3 are arranged vertically and horizontally. The upper end 7 of the upper protruding part 3 is open and the inside is formed as a hollow part 9, and the hollow part 9 can store muddy water 10 on the muddy ground 2. When the muddy ground plate 1 is laid so as to cover the muddy ground 2 with the hollow part 9 facing downward, the lower surface 12 of the upper surface part 11 of the upper protruding part 3 is located above the muddy water 10 stored in the hollow part 9 and does not come into contact with the muddy water 10. The upper surface portion 11 is provided with an air vent hole 13 for discharging air from within the cavity portion 9 when muddy water enters the cavity portion 9. This will be described in detail below.

[0019] 1 and 4, the upward protrusion 3 has a truncated pyramid shape that is a square shape in a plan view and decreases from the lower end 7 toward the upper end 16, with the length of one side of the bottom surface 17 being set to about 45 mm, the length of one side of the upper surface 11 being set to about 38 mm, and the height being set to about 30 mm. The upward protrusion 3 has the hollow portion 9 that has a trapezoidal shape that decreases from the lower end 7 toward the upper end 16, and the thickness of the upward protrusion 3 is set to about 1.5 to 2 mm.

[0020] In the present embodiment, the base plate 1 is formed by forming the truncated pyramidal upward protrusions 3 in a rectangular shape having a thickness of about 2 to 3 mm and a plastic substrate 23 (e.g., a rectangular plate shape with long sides of 450 mm and short sides of 300 mm) (FIG. 3) with a flat lower surface, indented upward, and the opposing side portions 5, 5 of the adjacent upward protrusions 3, 3 (the lower end sides 5a, 5a of the upward protrusions 3, 3) are connected to each other via the connecting portions 6. In the present embodiment, the upward protrusions 3 are arranged in a vertical arrangement of nine portions and a horizontal arrangement of six portions, as shown in FIG. 1.

[0021] As described above, the upper protrusions 3 of the base plate 23 (FIG. 3) are formed in a state where the base plate 23 is recessed upward, and the upper protrusions 3 are arranged vertically and horizontally as shown in FIGS. 1 and 2, so that the lattice surface portion 26 is formed between the lower surfaces 27, 27 of the upper protrusions 3 (formed on the lower surface of the base plate). In the lattice surface portion 26, the lower end surface 11 of the upper protrusions 3 and the lower end surface 30 of the connecting portion 6 are flush with each other. In this embodiment, the connecting portion 6 has a width of about 3 mm. Also, the outer peripheral edge of the base plate 23 has a protruding edge portion 31 having a width of about 3 mm formed by extending the base plate 23. The lattice surface portion 26 also functions as a reinforcing rib for the base plate 23. Also, since the lattice surface portion 26 is flat and has a relatively low rigidity, the base plate 1 can be bent to a certain extent at the lattice surface portion 26 in an upwardly convex state or a downwardly convex state. This allows the deck 11 to conform to the contours of the ground.

[0022] Furthermore, in the trapezoidal hollow portion 9, a protruding piece 33 (FIG. 3) is provided so as to protrude inward, which is a reinforcing piece.

[0023] The air vent hole 13 provided in the upper surface portion 11 of the upward protrusion 3 is provided in the center of the square-shaped upper surface portion 11 in this embodiment as shown in Figures 1 to 4. In this embodiment, as shown in Figure 4(B), the air vent hole 13 has a hole portion 35 of about 3 mm with conical enlarged hole portions 36, 36 connected to the upper and lower ends, and the vertical length of the air vent hole 13 is approximately equal to the thickness of the substrate 23 (about 2 to 3 mm).

[0024] In this embodiment, as shown in Figures 1 to 2 and 7, anti-slip projections 39 are provided on the upper surface 37 of the upper surface portion 11 in a diagonal arrangement, interrupted by the air vent hole 13.

[0025] Next, a method for forming a walking surface 40 (eg, Figs. 5 to 6) by laying the floor plate 1 having such a configuration over the muddy ground 2 will be described.

[0026] The floor plate 1 is laid so as to cover the ground that becomes muddy due to rainfall, or so as to directly cover the muddy ground 2.

[0027] When the floor plate 1 is laid to cover the ground that becomes muddy, muddy water from the muddy ground 2 caused by rainfall flows into the hollow portion 9 as shown by the dashed line in Fig. 4(A), and depending on the amount of water that flows in, the air present in the hollow portion 9 is exhausted from the air vent hole 13 as shown by the dashed arrow on the left side of Fig. 4(A). Since the air in the hollow portion 9 is exhausted from the air vent hole 13 in this way, there is no risk of the floor plate 1 floating on water and moving due to rainfall.

[0028] Furthermore, when the plank 1 is laid so as to directly cover the muddy ground 2, as the lattice surface portion 26 (Fig. 3) is sunk into the muddy ground 2, muddy water from the muddy ground 2 flows into the hollow portion 9, and depending on the amount of water that flows in, the air present in the hollow portion 9 is exhausted from the air vent holes 13, as shown by the dashed-dotted arrows. Since the air in the hollow portion 9 is exhausted from the air vent holes 13 in this way, there is no risk of the plank 1 floating on water and moving due to rainfall.

[0029] The floor plate 1 thus laid so as to cover the muddy ground 2 has a strength that allows people to walk on the upper surface 11 (FIG. 4(A)). When walking on the floor plate 1, people can walk on the floor plate 1 without soiling their shoes or the bottoms of their trousers.

[0030] This is possible because the present invention has the following configuration: "The upper protrusion 3 is in the shape of a box with an open lower end 7 and a hollow portion 9 formed inside, and the hollow portion 9 can store muddy water on the muddy ground 2, and when the floor plate 1 is laid so as to cover the muddy ground with the hollow portion 9 facing downward, the lower surface 12 (FIG. 4(A)) of the upper surface portion 20 of the upper protrusion 3 is located above the muddy water stored in the hollow portion 9 and does not come into contact with the muddy water."

[0031] This is a fundamental difference from the floor plate of Patent Document 2, which is a rectangular flat plate provided with through holes that allow air and water to freely flow.

[0032] Incidentally, the floor plate 1 having such a configuration may be used alone, for example by being laid on a muddy ground 2 like stepping stones, but may also be configured so that it can be connected to each other via connecting means 41, as shown in Figures 5 to 6.

[0033] One example of the connecting means 41 is one in which connecting engagement protrusions 43 are protruded at a required interval from each of two adjacent outer peripheral edge portions 42, 42 sandwiched at right angles by the rectangular shape of the base plate 23 as shown in Figures 2 to 3 and 7, and connecting engagement recesses 46 are provided on each of the other adjacent outer peripheral edge portions 45, 45 of the base plate 23, into which the connecting engagement protrusions 43 can be removably fitted in the vertical direction.

[0034] By fitting the connecting engagement protrusion 43 having such a configuration into the connecting engagement recess 46 (Figure 8(B)), the floor plates 1, 1 can be detachably connected to each other by abutting the long sides 47, 47 of the base plate 23 against each other (Figure 5) or by abutting the short sides 49, 49 of the base plate 23 against each other (Figure 6), thereby preventing the connected floor plates 1, 1 from shifting out of position. EXAMPLES

[0035] The present invention is by no means limited to the above-mentioned embodiment, and it goes without saying that various design modifications are possible within the scope of the claims. Examples thereof are as follows.

[0036] (1) The upward protrusion 3 is not limited to the above-mentioned square pyramid shape in plan view, but may be configured as a hexagonal or octagonal pyramid or other pyramid shape tapering from the bottom to the top, or may be configured as a circular cone or other shape. The upper surface 11 may be configured as a flat surface as described above, or may be configured as a hipped roof with a gentle slope, for example, as long as it does not impede people's walking. When configured as a hipped roof, it is preferable to provide the air vent hole 13 at the top of the upper surface 11 in order to efficiently exhaust the air in the cavity 9. Furthermore, the height and size in a plan view of the upward protrusion 3 and the diameter of the air vent hole 13 are set as required, taking into consideration the depth of the mud where the floor plate 1 according to the present invention is laid. If the mud is deep, the height and size in a plan view of the upward protrusion 3 and the volume of the cavity 9 are set larger. Furthermore, the deeper the mud, the larger the volume of the hollow portion 9 in the upward protruding portion 3, and therefore the greater the amount of air discharged from the hollow portion 9 as the base plate 1 is sunk into the muddy ground 2. For this reason, it is preferable to set the diameter of the air vent hole 13 to be larger. Furthermore, when the air vent hole 13 has a relatively small diameter of about 3 mm, a plurality of air vent holes 13 may be provided in the upper surface portion 11.

[0037] (2) The anti-slip projections 39 provided on the upper surface 11 of the upward protrusion 3 can be configured in various shapes that can exhibit a required anti-slip effect. Examples of such shapes include a dot shape, a linear shape, a curved piece shape, and the like.

[0038] (3) The upper surface portion 11 may be configured as a flat surface without the anti-slip projections 39 .

[0039] (4) The floor plate 1 according to the present invention may be configured not to have the connecting means 41. In this case, the floor plate 1 is laid on the muddy ground 2, for example, in a stepping-stone fashion, or with the edges of adjacent floor plates 1, 1 simply abutting against each other.

[0040] (5) In addition to the above-mentioned manner of connecting the upper protrusions 3, 3, there may be mentioned a manner in which the side portions of the upper protrusions 3, 3 are directly connected to each other by omitting the connecting portion 6 in the connected state shown in Fig. 4, and there may be mentioned a manner in which the side portions 5, 5 of the upper protrusions 3, 3 are connected to each other at portions above the lower ends 7, 7. The connection at the upper portions includes the connection of the upper ends of the side portions 5, 5 to each other or portions near the upper ends. When the side portions 5, 5 are connected to each other via the connecting portion 6, the connecting portion 6 may be provided with an opening for allowing the muddy water to pass through.

[0041] (6) In the present invention, the "upward protrusion formed by recessing the base plate 23 upward" can be formed by the injection molding, or by press molding or vacuum molding the base plate 23. The floor plate thus formed is also laid so as to cover the muddy ground to form a walking surface for people. [Explanation of symbols]

[0042] 1 bottom plate 2. Muddy Ground 3 Upper protrusion 5 Side 6 Joint 7 Bottom edge 9 Cavity 11 Top part 12 Bottom side 13 Air vent 23 Substrate 26 Grid surface section 39 Anti-slip protrusion 41 Connection means

Claims

1. A plastic muddy ground floor plate that is laid to cover the muddy ground and allows people to walk on it, The upper protrusions are arranged in parallel vertically and horizontally by connecting the sides of the upper protrusions directly or via connecting parts. The upper protrusion is in the shape of a box with an open lower end and a hollow interior, and the hollow can store muddy water on the muddy ground. When the floor plate is laid so as to cover the muddy ground with the hollow portion facing downward, the lower surface of the upper portion of the upper protrusion is located above the muddy water stored in the hollow portion and does not come into contact with the muddy water. The upper surface of the plate is provided with an air vent hole for discharging air from within the hollow portion as muddy water enters the hollow portion.

2. A floor board for use on muddy ground as described in claim 1, characterized in that all of the upward protrusions are formed in a state in which the base plate, the underside of which is formed as a flat surface, is recessed upward with the connecting portions therebetween, and a lattice-like surface portion consisting of the undersides of the connecting pieces is formed on the underside of the floor board.

3. 2. A floor plate for use on muddy ground according to claim 1, wherein said upward projection is formed in a truncated cone shape tapering upward.

4. 2. A floor plate for use on muddy ground according to claim 1, wherein said air vent hole is provided in the center of said upper surface portion.

5. 2. A floor plate for use on muddy ground according to claim 1, characterized in that the height of said upward protrusion is set to 30 to 50 mm, and the diameter of said air vent hole is set to 3 to 10 mm.

6. 2. A floor plate for use on muddy ground according to claim 1, characterized in that an anti-slip protrusion is provided on the upper surface of the upper surface portion of said upward protrusion.

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