JP2842860B2 - Filter for drain hole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for a drainage hole which is used by being attached to a back opening of a drainage pipe in order to prevent a drainage pipe provided on a retaining wall or a drainage pipe from being clogged by earth and sand. It is about.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Sho 61-10340 discloses a filter for a drainage hole for preventing a drainage pipe provided on a retaining wall or a drainage pipe from being blocked by earth and sand. In many cases, a cage-shaped box is fixed to a wall surface with a flange stretched over the opening edge thereof, and a filter material is inserted into the box from an opening with a lid on the upper surface of the box. However, such a method is troublesome because the labor for fixing the box to the wall surface and the labor for inserting the filter material into the box from the opening with the lid on the upper surface of the box are troublesome, and it is difficult for an amateur to perform the operation. In order to solve such a problem, a synthetic resin material having a large number of drainage pores arranged in a size that can be fitted to the backside opening of the drainage hole formed in the retaining wall or the drainage pipe is used. A filter for drainage holes, in which a filter material is fitted in a cup-shaped container, has been developed and published as Japanese Utility Model Publication No. 7-1437, but this filter for drainage holes is a retaining wall or drainage pipe. However, when the surface is a vertical surface or the degree of inclination is small, there is a problem that the water collecting efficiency from the opening end is insufficient and a use place is limited.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and is extremely applicable to a retaining wall or a drainage pipe having a small vertical or inclined degree. An object of the present invention is to provide an inexpensive drain hole filter with good water collection efficiency.

[0004]

SUMMARY OF THE INVENTION A drain hole filter according to the present invention, which solves the above-mentioned problems, is mounted on a back wall of a drain hole formed in a retaining wall or a drainage pipe and is provided with a drain hole. In a filter for drain holes that prevents runoff of earth and sand into the drain hole, when this filter is attached to the main body of the filter so as to close the opening on the back side of the drain hole, it is located below the opening edge of the drain hole and A jaw-shaped receiving portion for guiding the water to the drain hole is provided.

[0005] Further, in such a filter for drain holes, a cup-shaped container in which a large number of drain holes are arranged from a body having an engaging flange stretched to an opening edge to a bottom as a main body of the filter. The filter according to claim 2, which comprises a main body in which a filter material is fitted and a net-plate-like lid material covered at an opening of the cup-shaped container, so that accurate filtration can be efficiently performed. According to the present invention, the present invention according to claim 3 is provided with a jaw-shaped receiving portion provided on a lid member in consideration of mass productivity and handleability. Further, the filter main body is not a cup-shaped container, but a mesh plate simply formed in a dish-like shape, which is attached to a retaining wall or a back side of a wall surface of a drainage pipe with an attaching portion.
In the present invention, the mounting portion of the net plate is formed integrally with the net plate and formed as a leg portion which is inserted and held in the drain hole so that the net plate can be mounted simply by being inserted into the drain hole. 5 is an invention according to 5.

[0006] The water drain hole filter thus configured is mounted so as to close the opening on the back side of the water drain pipe provided in the retaining wall or the drainage pipe, and the sediment embedded in the back side of the wall surface drains water. Preventing the water from flowing into the holes is the same as in a conventional water drain hole filter of this type.

[0007]

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 is ABS
The filter is mainly composed of a hard synthetic resin material such as resin or hard polyethylene resin. In this embodiment, for example, a tapered body portion 2 having an opening diameter of about 50 to 75 mm and a length of about 60 to 80 mm is attached to a bottom portion 3. And a plurality of wedge-shaped cuts 6 are arranged over an engagement flange 5 extending from the opening side of the body 2 to the rim. A material 7 is fitted, and the opening of the cup-shaped container is covered with a cover material 9.

As the above-mentioned filter material 7, a curled synthetic resin fine wire entangled in a tapered columnar shape having a length of about 4 to 6 cm, a nonwoven fabric made of synthetic resin fibers, or a combination thereof is used. Although the material is optional, the cup-shaped container has a sufficient depth so that it can have a sufficient thickness, the filter material 7 is clogged, and the intended purpose can be achieved in a short time. Cannot be achieved.

When the lid member 9 is covered with a jaw-shaped receiving portion 12 which is stretched substantially at half of the periphery thereof, the jaw-shaped receiving portion 12 is positioned at the opening edge of the cup-shaped container. It has a function of guiding the water in the earth and sand into the cup-shaped container by projecting from the lower part toward the earth and sand. The lid member 9 shown in FIG. 1 is formed from the periphery of the mesh plate portion 11 made of a synthetic resin material such as an ABS resin or a polyethylene resin.
The inner flanges 10, 10 engaged with the engaging flanges 5 stretched over the opening edges of the body portion 2 are integrally formed in a state of being divided into two from the peripheral edge of the mesh plate portion 11. Is formed slightly larger than the outer diameter of the engaging flange 5 of the cup-shaped body, and the cup-shaped body is engaged with the elastically engaging engaging flange 5 while reducing the diameter of the cup-shaped body in the range of the cut 6. Although the cover can be covered, as shown in FIG. 2, a leg 14 having an engaging claw 13 formed at one end on one side of the mesh plate 11 may be provided.

Any of the illustrated jaw-shaped receiving portions 12 provided below the opening edge of the cup-shaped container 1 is provided on the lid member 11, but when the lid member 9 is not provided, Depending on the structure of the lid member 9, it may be provided directly on the opening edge of the cup-shaped container.

[0011] In the above-mentioned structure, a tapered body 2 is inserted through a base end opening of a drain pipe 22 provided through a wall 21 such as a retaining wall or a drainage pipe. The cup-shaped container can be easily mounted on the drainage pipe 22 simply by pushing it until the engagement flange 5 at the opening edge of the container comes into contact with the wall surface. There is no need for skill or great power for installation, and after that, if embedding work of earth and sand on the back side of the wall 21 can be done, a series of work can be done because retaining walls and drainage pipes can be constructed. Although it can be simplified, in the present invention, in particular, in such a drain filter, a jaw-shaped receiving portion 12 for guiding water in the soil into the cup-shaped container 1 is provided below the opening edge of the cup-shaped container. Because it is provided, walls 21 such as retaining walls and drainage pipes Even in the case of straightness or a small inclination, the water in the earth and sand is received by the jaw-shaped receiving portion 12 and guided through the cup-shaped body into the drainage hole formed in the retaining wall or the drainage pipe. In addition, the water collection efficiency is extremely good.

In the above description based on the drawings, the filter main body 1 is fitted with a filter material 7 in a cup-shaped container in which a large number of drain holes 4 are arranged, and the opening is formed in a mesh plate-like lid. Although only the case where the most accurate filtration can be efficiently performed by covering with the material 9 is not shown, the filter main body 1 is provided on a mesh plate formed in a dish-like shape. It may be a simple type that is attached with a mounting part on the back side of the wall of the drainage pipe, in which case the mounting part of the net plate is integrally formed with a leg that can be inserted into the drain hole on one side of the net plate As a forcible insertion of this leg into the drain hole, the elasticity of the leg portion allows it to be detachably held in the drain hole so that the mesh plate can be attached to the retaining wall or the back side of the wall of the drainage pipe, Nailing and gluing by arranging ear-shaped protruding pieces at the required points on the periphery of the net For example, when it is attached to a wall surface or the other structure is installed so as to close the opening of the drain hole, the water in the earth and sand is located below the opening edge of the drain hole. The structure of the filter main body 1 is not limited as long as the jaw-shaped receiving portion 12 for guiding water collection to the drain hole is provided.

[0013]

As is clear from the above description, the present invention not only can be easily mounted on the drainage pipe, but also has a drainage hole formed in a retaining wall or a drainage pipe mainly composed of a filter. A jaw-shaped receiving part is provided at the lower part of the back side opening to guide the water in the soil into the cup-shaped container, so it is used for retaining walls or drainage pipes with small or vertical inclination However, the water collection efficiency is extremely high,
There is an advantage that it can be provided at low cost because the structure is simple. Therefore, the present invention has an extremely large practical value as a solution to the problem of the conventional filter for drainage holes.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a preferred embodiment of the present invention.

FIG. 2 is a sectional view showing an example of a preferred embodiment of the present invention.

FIG. 3 is a sectional view showing another example of the preferred embodiment of the present invention.

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 1 Filter main body 4 Drainage pore 7 Filter material 9 Lid material 11 Net plate part 12 Jaw-shaped receiving part

Claims (5)

(57) [Claims] A water drain hole filter which is attached to an opening on the back side of a water drain hole formed in a retaining wall or a drainage pipe to prevent runoff of earth and sand into the water drain hole.
In addition, when it is attached so as to close the opening on the back side of the drainage hole, a jaw-shaped receiving portion (12) which is located below the opening edge of the drainage hole and guides water in the sediment to the drainage hole is provided. ) Is provided. 2. A filter main body (1) having an engagement flange at an opening edge.
A body in which a filter material (7) is fitted in a cup-shaped container in which a large number of pores for drainage (4) are arranged from the body (2) where the (5) is stretched to the bottom (3); 2. The drainage filter according to claim 1, wherein the filter comprises a net-plate-shaped cover member (9) covered at an opening of the cup-shaped container. 3. The drain hole filter according to claim 2, wherein the jaw-shaped receiving portion (12) is provided on the lid (9). 4. The filter main body (1) is a mesh plate shaped like a countersink, and has a mounting portion formed on the mesh plate so that the filter main body (1) can be attached to the retaining wall or the back side of the drainage pipe. The filter for a drain hole according to claim 1. 5. The drain hole filter according to claim 1, wherein the attachment portion of the net plate is a leg portion integrally formed with the net plate and inserted and held in the drain hole.