JPS63875Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to be used when buried underground at the starting point, gathering/branching point, turning point, or other location in a drainage channel for various types of wastewater, including gray water discharged from houses, etc. Regarding drainage basins installed accordingly.

This type of drainage basin is installed by sitting in a predetermined position in a trench formed in the ground, and then backfilling the area beneath and around it with soil. Among such drainage basins, the one shown in Fig. 1A has been known to have legs for seating. As clearly shown in the figure, the legs A of this drainage basin are in the form of a flat plate that is suspended so that the radial direction of the bottomed cylindrical drainage basin main body B and the width direction of the legs A coincide. As a result, the seating area becomes narrow, resulting in a lack of stability when sitting, and if the legs A are made of synthetic resin moldings, there is a risk of impact during transportation and soil pressure during or after backfilling. There was a problem that they were easily damaged by external forces such as

Therefore, as shown in Fig. 1B, a flat plate part 100 is lowered so that its width direction coincides with the radial direction of the drain body B, and a circular arc plate part 101 is formed integrally with the lower flat plate part 100. A leg body A was proposed. According to this, the flat plate part 100 and the arc plate part 1
01 mutually reinforce each other, which is effective in preventing damage caused by the above-mentioned external force. However, as shown in the figure, the arc plate portion 101 is affected by various circumstances.
For example, due to circumstances such as the internal water passage wall of the drainage basin main body B being bulged downwards, it is necessary to install it along the outer periphery of the drainage basin main body B.
If embankment is applied from the surrounding area when backfilling the drainage basin, soil will be difficult to move to the back side of the circular plate part 101, and the surrounding area by the circular plate part 101 and the flat plate part 100 will be reduced.
A new drawback has arisen in that D ₁ tends to become a dead space during backfilling. Additionally, since the seating surface is T-shaped and its area is not large enough, it has not been possible to completely eliminate the drawback of lack of stability when seating.

On the other hand, as shown in Fig. 1C, the flat plate part 200 is bent down so that its width direction coincides with the radial direction of the drainage basin main body B, and the horizontal cross-sectional view formed integrally with this plate part 200 forms a U-shape. Leg body A with column part 201
has also been proposed. This is made less likely to be damaged due to the mutual reinforcing action between the flat plate part 200 and the pillar part 201, but due to the same circumstances as explained in FIG. Therefore, when the drainage basin is backfilled, the surrounding area _D2 formed by the column part 201 and the flat plate part 200 becomes a dead space, which has the disadvantage that stability during seating is likely to be impaired.

The present invention was developed to improve the above-mentioned drawbacks of the conventional methods. To provide a drainage basin equipped with legs that are less likely to cause damage and are highly stable when sitting.

In order to achieve this purpose, in the present invention, the leg body has two descending outer surfaces and a flat seating surface, and the two outer surfaces are arranged at a portion near the inner edge of each outer surface. They are mutually inclined so that the distance between them becomes smaller as the distance increases.

Embodiments of the present invention will be described below with reference to illustrated examples.

In the drainage basin illustrated in FIG. 2, a drainage basin main body B integrally provided with legs A for seating has an internal passageway 11 turned 90 degrees. This internal water passage 11 has a slight flow gradient, which determines the directionality during installation. Further, as shown in FIG. 3, the internal water passage 11 has a shape in which a wall 11a thereof bulges downward. In addition to the above-mentioned 90-degree turning type, internal water passages include various types such as Y-type, T-type, straight-line type, and others, and there are also types that do not have the above-mentioned flow gradient.

Next, as shown in Fig. 4, the leg body A for seating consists of two flat plate parts 1, 1 hanging down from the drainage basin main body B (see Figs. 2 and 3) and these flat plate parts 1. , 1, and a flat plate seating part 2 integrally provided between the lower ends of the flat plate parts 1 and 1, and the two flat plate parts 1 and 1 described above are integrally formed so that a horizontal cross-sectional view forms a V-shape. . As clearly shown in FIG. 2, the two flat plate parts 1, 1 are symmetrical to each other with respect to an imaginary plane S passing through the center O of the drainage basin main body B.
According to the above configuration, the outer surfaces 1a, 1a of the flat plate parts 1, 1 are closer to each other as they become closer to the inner edges, that is, the corner parts formed by the two flat plate parts 1, 1. They are mutually inclined so that the distance is small.

Regarding the drainage basin equipped with the legs A mentioned above,
Since the two flat plate parts 1, 1 and the seat part 2 of the leg body A exert a mutual reinforcing effect, the leg body A is less likely to be damaged by external force. In particular, since one flat plate part 1 is reinforced on two adjacent sides by another flat plate part 1 and the seating part 2, the leg body A is stronger than the one explained in FIG. The overall strength has been improved. Furthermore, in the drainage basin described above, dead spaces corresponding to the dead spaces D ₁ and D ₂ during backfilling explained in FIG. 1B and C are unlikely to occur. That is, two flat plate parts 1,
1 is V-shaped, making it easier for backfilling soil to enter the back side. Furthermore, regarding the stability when sitting, since the lower surface of the flat seating part 2 is placed on the ground as a flat seating surface 2a, a sufficiently large seating area can be secured, which is better than the conventional one mentioned above. It is far superior in comparison.

In the above description, the two flat plate parts 1, 1 of the leg body A are integrally formed to form a V-shape, but the angle of the V-shape is as shown in Figure 2. It can be at 90 degrees, less than or more than 90 degrees, and the advantage of setting it at 90 degrees as shown in Figure 2 is that the stability when seating is not compromised and there is no dead space when backfilling. There is.

In addition to the example shown in the drawings, the leg body A can also be used, for example, as shown in FIG. It can be integrated in a U-shape, or it can have two mutually slanted outer surfaces 1 as shown in Figure 6.
It may be constructed in the shape of a polygonal prism, for example, a triangular prism, having a and 1a. In these cases, the two falling outer surfaces of the leg A must be sloped so that the distance between them becomes smaller as the portion approaches the inner edge of each outer surface. .

As detailed above, the drainage basin according to the present invention is
Due to the structural characteristics of the legs, the legs are less likely to be damaged, and no dead space is created when backfilling.
Moreover, it provides excellent stability when sitting.

[Brief explanation of the drawing]

Figure 1 A, B, and C are schematic bottom views for explaining the structure of the legs of a conventional drainage basin, Figure 2 is a plan view of a drainage basin according to an embodiment of the present invention, and Figure 3 is the same as that shown in Figure 1. 4 is a perspective view showing the legs of the drainage basin in FIG. 2, FIG. 5 is a perspective view showing a modified example of the legs, and FIG. It is a perspective view showing a modification. A... Leg body, 1... Flat plate part, 1a... Outer surface,
2...Seating portion, 2a...Seating surface.

Claims (1)

[Scope of utility model registration request] In a drainage basin equipped with legs for seating, the legs have two descending outer surfaces and a flat seating surface, and the two outer surfaces are close to the inner edge of each outer surface. Drainage areas are characterized by being mutually inclined so that the closer the parts are, the smaller the distance between them.