JP2003328334A - Container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for storing soil that can prevent the outflow of soil held inside by preventing a sheet laid inside, from being buried in the soil when filling the soil inside. <P>SOLUTION: An approximately rectangular bottom face part 2, and sidewall parts 3 erected at the peripheral edge of the bottom face part 2, are integrally formed. The sidewall parts 3 are provided with a plurality of protrusion parts 8 for holding a sheet 11, and when the sheet 11 is laid inside the container 1, the parts near the peripheral edge of the sheet 11 are hooked to the tips of the respective protrusion parts 8. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for containing soil, and more particularly to a container which is buried in the ground such as a riverbed while containing the soil therein.

[0002]

2. Description of the Related Art There is known a construction method in which soil having good water permeability and having a water purifying effect is contained in a container called a container, and the container is buried in the ground while containing the soil. . According to this construction method, a surface with good drainage is realized, and at the same time, the water is purified by passing through the soil retained in the container. This construction method is used, for example, on a riverbed where good drainage is required.

For the above-mentioned soil container, a container having a simple shape in which a rectangular bottom portion and a side wall portion are integrally formed and an upper surface is opened is generally used. In this type of container, since the water that has penetrated into the soil needs to be discharged to the outside of the container, the bottom surface and the side wall are formed in a lattice shape. As the material of the container, synthetic resin is used in consideration of durability and corrosion resistance.

Since the bottom surface and the side wall of the container are formed in a lattice shape as described above, if the soil is packed as it is, the soil will leak from the voids in the wall surfaces. Therefore, before filling the soil, a method is used in which a sheet having water permeability such as cloth is laid on the entire inside of the container and the soil is filled from the top to prevent the soil from flowing out.

[0005]

However, there is a problem that when the soil is put on the sheet laid inside the container, the sheet is dragged into the soil and the edge of the sheet is buried in the soil. The state at this time will be described with reference to FIG. 6 (a) to 6 (c) are diagrams showing a work process when filling a conventional container with soil.

As shown in FIG. 6A, a sheet 11 is laid so as to cover the inside of the container 1, that is, the entire inner surfaces of the bottom surface portion 2 and the side wall portion 3. Then, with the end of the sheet 11 protruding from the side wall portion 3 of the container 1, soil 15 is filled from above the sheet 11 to near the upper end of the side wall portion 3 of the container 1 (FIG. 6B).

However, as shown in FIG. 6 (c),
When the soil 15 is packed, the soil 15 may drag the sheet 11 downward, and the edge of the sheet 11 may be buried in the soil 15. Then, container 1
The soil 15 filled in the inside leaks from the lattice-shaped side wall portion 3 and the like, and there is no point in trying to prevent the soil 15 from leaking by laying the sheet 11. Then, if the container 1 is buried in the ground as it is, the outflow of the soil 15 will further proceed due to the water flowing down in the ground.

The present invention has been made in view of the above circumstances, and when the inside is filled with soil, the sheet laid inside is prevented from being buried in the soil, and is retained inside. It is an object of the present invention to provide a container for accommodating soil capable of preventing the outflow of soil.

[0009]

According to a first aspect of the present invention, a substantially rectangular bottom portion and a side wall portion standing upright on the periphery of the bottom portion are integrally formed, and a sheet is formed on the side wall portion. Is provided with a plurality of protrusions for holding the.

According to the present invention thus constructed, in the work step of laying the sheet inside the container, the sheet is held in the container by being hooked on the plurality of protrusions provided on the side wall portion. You can As a result, it is possible to prevent the sheet from being dragged by the soil and buried in the soil even when the soil is filled from above the sheet, and thereby to prevent the soil from flowing out from the container.

According to a second aspect of the present invention, among the side wall portions facing each other, a concave cutout portion is provided at least at one end of one side wall portion, and the other side wall portion has an upper end. It is characterized in that a plurality of connecting portions having a shape capable of being locked in the cutout portion are provided so as to project outward. As a result, it is possible to connect a plurality of containers in a line without a gap.

According to a third aspect of the present invention, the side wall portion is
It is characterized in that it is formed so as to spread outward from the bottom face portion upward. With this, the other containers can be sequentially stacked while being stored inside the container, so that the convenience at the time of storing or transporting the containers can be improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a container according to this embodiment. Figure 2 shows the container II shown in Figure 1.
It is a II sectional view. As shown in FIG. 1, the container 1 according to the present embodiment is composed of a substantially square bottom surface portion 2 and side wall portions 3 provided upright from the four peripheral edges of the bottom surface portion 2. The container 1 according to the present embodiment is made of synthetic resin, and the bottom surface portion 2 and the side wall portion 3 are integrally formed.
Incidentally, polyethylene or the like is suitable as the synthetic resin material used.

The side wall portion 3 of the container 1 is formed with a slight inclination toward the outside. That is, the side wall portion 3 is the bottom surface portion 2
It is formed so that it gradually spreads outward from the above. With such a shape of the side wall portion 3,
It is possible to perform nesting in which other containers are sequentially stacked while being stored inside the container.

The container 1 is mainly used for the purpose of being buried in the ground such as a riverbed while containing a predetermined soil. As the soil to be stored in the container 1, soil having good water permeability and having a water purifying action is preferable. Since the purified water that has passed through the soil needs to be quickly discharged to the outside of the container 1, both the bottom surface portion 2 and the side wall portion 3 of the container 1 are formed in a lattice shape. .

Among the side wall portions 3 surrounding the four sides, the side wall portions 3 facing each other are provided with connecting portions 4 and 4 and cutout portions 5 and 5 for sequentially connecting a plurality of containers. This configuration will be described in detail. Of the opposing side wall portions 3, one side wall portion 3 has two upper end portions provided with concave cutout portions 5 and 5. The two notches 5 and 5 are formed from the vicinity of both side ends of the side wall portion 3 to the vicinity of the center of the side wall portion 3, respectively. A positioning protrusion 6 is formed between the two notches 5 and 5 to determine the connecting position of the containers 1 when connecting a plurality of containers.

On the other side wall portion 3 facing the side wall portion 3 in which the cutout portions 5 and 5 are formed, there are two connecting portions 4 and 4 having a shape capable of engaging with the cutout portions 5 and 5. It is formed in the place. These two connecting portions 4 and 4 project outward from the upper end of the side wall portion 3 and are formed in a hook shape, and are formed in the same portion where the two cutout portions 5 and 5 are formed. In addition, a space is formed between the two connecting portions 4 and 4 so that the above-described positioning protrusion 6 engages with it.

The synthetic resin container 1 configured as described above is molded by an injection molding method. The mold used for this injection molding is divided into a fixed-side mold plate and a movable-side mold plate at the position of the one-dot chain line shown in FIG. Then, as shown in FIG. 2, the side wall portion 3 and the bottom surface portion 2 are in a state where a step is formed at a position where the lower end portion of the side wall portion 3 and the upper end portion of the bottom surface portion 2 are in contact with each other (the position indicated by the alternate long and short dash line). To be joined. In the container according to the present embodiment, since it is necessary to form a void in the side wall portion 3, conventionally, it is necessary to use a mold having a complicated shape in consideration of opening the mold after resin solidification. However, the structure of the mold can be simplified by providing the steps as in the present embodiment.

The manner in which a plurality of containers 1 are connected by the connecting portions 4 and 4 and the cutout portions 5 and 5 described above will now be described with reference to FIG. FIG. 3 is a cross-sectional view showing two connected containers. As shown in FIG. 3, by locking the connecting portion 4 of the container 1 to the cutout portion 5 of another container 1, it is possible to connect a plurality of containers while closely contacting each other. Further, the plurality of containers can be linearly arranged by the positioning protrusion 6 (see FIG. 1) formed between the two notches 5 and 5.

As shown in FIG. 1, the side wall 3 is formed with a plurality of protrusions 8 for holding the sheets laid inside the container 1. The projection 8 has a sharp tip, and the tip is in the direction of the bottom surface 2, that is,
The side wall portion 3 is provided so as to face downward. The protrusions 8 are provided at two positions near both ends of the side wall 3 and two near the center of the side wall 3. Further, any of the protrusions 8 is formed at the upper end of the voids forming the lattice shape.

Next, a method of using the container according to this embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a view showing a work process of filling the container with soil according to the present embodiment, and the work is performed in the order of FIG. 4 (a), FIG. 4 (b), and FIG. 4 (c). FIG. 5A is a schematic sectional view of the ground in which the container according to the present embodiment is buried, and FIG. 5B is a perspective view showing the arrangement of the container shown in FIG. 5A. Note that FIG. 5B shows a state in which the inside of the container is not filled with soil.

As shown in FIG. 4 (a), first, a sheet is formed so as to cover the entire inside of the container 1 so that the soil filling the inside of the container 1 does not flow out from the lattice-shaped bottom portion 2 and the side wall portion 3. 11 is laid. Then, the vicinity of the peripheral edge of the sheet 11 protruding from the side wall portion 3 is hooked on each protrusion 8 provided on the side wall portion 3 to hold the sheet 11 in the container 1. Here, the size of the sheet 11 used is such that when the sheet 11 is laid inside the container 1, the sheet 11 protruding from the upper end of the side wall portion 3 reaches the protrusion 8. It is necessary.
The sheet used is preferably made of a material having high water permeability, such as cloth.

After laying the sheet 11 as described above, the soil 15 is filled from the top of the sheet 11 to the vicinity of the upper end of the side wall portion 3 (FIGS. 4 (b) and 4 (c)). At this time, sheet 1
Since 1 is held by each protrusion 8, the sheet 11 is not dragged by the soil 15 when the soil 15 is filled, and thus the sheet 11 is prevented from being buried in the soil 15. It

The container 1 having the soil 15 filled therein is
The above-mentioned connecting portions 4 and 4 arranged on the ground excavated in advance.
The plurality of containers 1 are arranged in a straight line by engaging with the notches 5 and 5 of another container 1. Then, as shown in FIGS. 5 (a) and 5 (b), a plurality of container rows are provided and arranged in parallel with each other with gravel 17 interposed therebetween. Here, it is preferable that the rows of the containers 1 are arranged at positions shifted in the vertical direction.

By thus burying the soil while holding it in the container 1, it is possible to form soil having good water permeability and a water purifying action in the ground.
As a result, the water soaked from the ground surface 16 can be swiftly flowed down, whereby a ground surface with good drainage can be realized. Further, the water flowing down in the ground can be purified by passing through the soil.

[0026]

As described above, according to the present invention,
In the process of laying the sheet inside the container, the sheet can be held in the container by hooking the sheet on the tips of the plurality of protrusions provided on the side wall. As a result, it is possible to prevent the sheet from being dragged by the soil and buried in the soil even when the soil is filled from above the sheet, and thereby to prevent the soil from flowing out from the container.

[Brief description of drawings]

FIG. 1 is a perspective view of a container according to an embodiment of the present invention.

2 is a sectional view taken along the line II-II of the container shown in FIG.

FIG. 3 is a sectional view showing two connected containers.

FIG. 4 is a diagram showing a work process of filling soil in a container according to an embodiment of the present invention.

5 (a) is a schematic cross-sectional view in the ground in which a container according to an embodiment of the present invention is buried, and FIG. 5 (b) shows an arrangement of the container shown in FIG. 5 (a). It is a perspective view.

FIG. 6 is a diagram showing a work process of filling a conventional container with soil.

[Explanation of symbols]

1 container 2 Bottom part 3 Side wall 4 connection 5 Notch 6 Positioning protrusion 8 protrusions 11 sheets 15 Sat 16 ground surface 17 gravel

Claims (3)

[Claims] 1. A substantially rectangular bottom part and a side wall part standing upright on the periphery of the bottom part are integrally formed, and a plurality of protrusion parts for holding a sheet are provided on the side wall part. A container characterized by. 2. A recessed notch is provided at least at one of the upper ends of one of the side walls facing each other, and the recess is engaged with the notch at the upper end of the other side wall. The container according to claim 1, wherein a plurality of connecting portions having possible shapes are provided so as to project outward. 3. The container according to claim 1, wherein the side wall part is formed so as to expand outward from the bottom part upward.