JPH0332575Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a drainage filter for preventing sediment outflow, which is used on the side walls of roadside gutters to prevent sediment from flowing into the gutters.

Conventional technology Conventionally, this type of drainage filter for preventing sediment outflow is made of synthetic resin, and has a perforated plate connected to one side of a tapered body. It is divided into a plurality of pieces by a plurality of notched grooves extending in the axial direction, and is imparted with elasticity. This drainage filter for preventing earth and sand from flowing out is inserted into a tapered hole formed in the side wall of the side gutter and held in a state where it cannot be removed, thereby preventing earth and sand from flowing into the side gutter and draining the filter. .

Problems to be Solved by the Invention However, since the above-mentioned conventional drainage filter for preventing sediment outflow merely has a tapered body, the elasticity of each divided piece becomes too large. When inserted into the tapered hole in the side wall, it tends to tilt, and care is required to insert it in an accurate posture, making the operation cumbersome. In addition, if it is inserted in an inclined state as described above and is not maintained in an accurate posture, it will not be possible to effectively prevent earth and sand from flowing into the side gutter.

The present invention solves the conventional problems as described above, and allows the device to be inserted and supported in a tapered hole in the side wall of a side gutter in an accurate posture with simple operation, thereby allowing it to be inserted into the side gutter, etc. An object of the present invention is to provide a drainage filter for preventing sediment outflow, which can effectively prevent sediment outflow.

Means for Solving the Problems In order to achieve the above object, the present invention has a cylindrical body formed of synthetic resin and connected to a perforated plate, and an enlarged part connected to the outer periphery of the open end of this body. The enlarged part and the body are divided into a plurality of substantially equal pieces by a plurality of notched grooves along the axial direction, and the inclination angle of the line connecting the outer edge of the perforated plate and the enlarged part with respect to the axial center is The angle of inclination of the inner wall with respect to the axis of a tapered hole such as a side gutter is greater than the angle of inclination of the inner wall.

Therefore, according to the present invention, by inserting the perforated plate into a tapered hole such as a side gutter, the body portion and the enlarged portion are elastically deformed, and the outer peripheral edge of the perforated plate is brought into contact with the peripheral wall of the tapered hole. At the same time, the outer peripheral edge of the enlarged portion can be brought into pressure contact with the peripheral wall of the tapered hole due to repulsion elasticity. In this way, both ends of the perforated plate and the enlarged part come into contact with the peripheral wall of the tapered hole, and the trunk is reinforced by the enlarged part, making it possible to set the repulsion elasticity to an appropriate level, thereby maintaining an accurate posture. can do.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 4, the drainage filter 1 for preventing sediment outflow of the present invention is molded from synthetic resin, has a cylindrical body 3 connected to a perforated plate 2, and has an open end of the body 3. A flange-like enlarged portion 4 is provided continuously on the outer periphery of the side, and this enlarged portion 4 is inclined slightly rearward with respect to a plane perpendicular to the axis. The body part 3 and the enlarged part 4 are connected to the perforated plate 2 from the outer edge of the enlarged part 4.
A plurality of substantially equal pieces (four pieces) are formed near each other by the notch grooves 5 of plural pieces (four pieces in the illustrated example) along the axial direction.
It is divided into. This notched groove 5 is formed so that it becomes gradually narrower on the perforated plate 2 side. As is clear from FIG. 4, the inclination angle of the line A connecting the outer edge of the perforated plate 2 and the enlarged portion 4 with respect to the axis C is larger than the inclination angle of the inner wall of the tapered hole 8 of the side gutter 6 with respect to the axis, which will be described later. It is formed to be.

Drainage filter 1 for preventing sediment outflow with the above configuration
is inserted into a tapered hole 8 formed in the side wall 7 of the side gutter 6, as shown in FIG. At this time, the trunk 3
Since the enlarged part 4 is divided by the notch groove 5, it is elastically deformed and the outer peripheral edge of the perforated plate 2 is brought into contact with the peripheral wall of the tapered hole 8, and the outer peripheral edge of the enlarged part 4 is connected to the tapered hole. It can be brought into pressure contact with the peripheral wall of No. 8 due to repulsion elasticity. In this way, perforated plate 2
In addition to contacting the circumferential wall of the tapered hole 8 at both ends of the side and the enlarged part 4 side, the enlarged part 4 is connected to the body part 3 for reinforcement, and the rebound resilience is set to an appropriate level so that the contact is made in a stable state. This allows you to insert and hold the device in the correct position. Rainwater is allowed to flow into the side gutter 6 through the holes 2a of the perforated plate 2 of the drainage filter 1 for preventing sediment outflow, which is held in the tapered hole 8 in this manner, and the perforated plate 2 prevents the earth and sand from flowing into the side gutter 6. be able to.

Note that the holes 2a of the perforated plate 2 are not limited to the circular shape as shown in the illustrated example, but may be rectangular or the like, and the cutout grooves 5 may be formed until they reach the perforated plate 2, or may be stopped midway. The present invention can be modified in various ways without departing from its basic technical concept.

Effects of the invention As explained above, according to the invention, a cylindrical body is molded from synthetic resin and is connected to a perforated plate, and an enlarged part is connected to the outer periphery of the open end of this body. The enlarged part and the body part are divided into a plurality of substantially equal pieces by a plurality of notched grooves along the axis direction, and the inclination angle of the line connecting the outer edge of the perforated plate and the enlarged part with respect to the axis is tapered like a side groove. Since the inclination angle of the inner wall with respect to the axis of the perforated plate is larger than the angle of inclination of the inner wall with respect to the axis of the perforated plate, by inserting it into a tapered hole such as a side gutter, the body part and the enlarged part are elastically deformed, and the outer peripheral edge of the perforated plate is It is possible to bring the enlarged portion into contact with the peripheral wall of the tapered hole and to press the outer peripheral edge of the enlarged portion against the peripheral wall of the tapered hole due to repulsive elasticity. In this way, both ends of the perforated plate and the enlarged part come into contact with the peripheral wall of the tapered hole, and the trunk is reinforced by the enlarged part, making it possible to set the repulsion elasticity to an appropriate level, thereby maintaining an accurate posture. can do. Therefore, it can be inserted and supported in a tapered hole in an accurate posture with a simple operation, and there are advantages such as being able to effectively prevent earth and sand from flowing into a side gutter or the like.

[Brief explanation of drawings]

1 to 5 show an embodiment of the drainage filter for preventing soil outflow of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a rear view, and FIG. FIG. 2 is a cross-sectional view taken along the - arrow direction, and FIG. 5 is a cross-sectional view in a state of use. 1...Drainage filter for preventing sediment outflow, 2...
Perforated plate, 3...Body portion, 4...Enlarged portion, 5...Notch groove, 6...Side groove, 7...Side wall, 8...Tapered hole.

Claims (1)

[Scope of utility model registration request] Molded from synthetic resin, a cylindrical body is connected to a perforated plate, and an enlarged part is connected to the outer periphery of the open end of this body. It is divided into a plurality of substantially equal pieces by the notch groove, and the inclination angle of the line connecting the outer edge of the perforated plate and the enlarged portion with respect to the axis is larger than the inclination angle of the inner wall with respect to the axis of a tapered hole such as a side gutter. A drainage filter for preventing sediment outflow, characterized by being formed in the following manner.