JP2552244B2 - Road opening cover - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a cover body such as a water collecting basin constituting a road, a gutter or the like, a blind cover for covering openings such as gutters, and a manufacturing method, and is lightweight. In addition, the present invention relates to a structure that has sufficient strength and has an aesthetic appearance.

[0002]

2. Description of the Related Art Conventionally, there is a structure of an unreinforced or reinforced concrete cover or a cover made of cast iron.

[0003]

SUMMARY OF THE INVENTION The main point of the present invention is that the conventional lid has a monotone color tone, and coloring requires a separate coating surface. There is a problem in durability such as peeling during long-term use, and it is a technical problem to be solved that it can be colored by itself and that the product has a structure having sufficient strength. Is.

[0004]

[Technical Means for Solving the Problems] A technical means for solving the above problems is to use, as a material, a polyester, an epoxy resin, or the like, which is freely colored and has strength,
As a material strength, the weakness of the tensile strength is weaker than the compressive strength,
A structure in which a plurality of woven or non-woven glass fibers are reinforced in a main part, and when a product having a through hole is further formed, a tip end portion of a rod-shaped member forming the through hole is formed into a cone shape. And

[0005]

Since the opening cover according to the present invention is manufactured by casting, it is possible to reliably lay the woven or non-woven glass fiber or the like, which is a reinforcing material, on the lowermost surface which is the main part. , Therefore, it becomes an ideal structure as a strength structure,
In the case of a structure having a through hole, the tip of the rod-shaped member forming the through hole is formed into a pyramidal shape, and the reinforcing member is locally expanded without forming a cut portion locally. By this, the reinforcing material is originally unevenly distributed around the through-hole portion, which tends to be weakened, which is advantageous in strength. Therefore, the material can be freely colored, and it is possible to select an arbitrary color tone depending on the purpose of use as a product.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a mold surface plate part, 2 is a mold side plate part,
3 is a woven glass fiber, 4 is the same epoxy resin as the material impregnated in the woven glass fiber, and a rod shape having a conical portion 6 at the tip for forming the through hole 7 shown in FIG. 3 in FIG. The body 5 is shown, and FIG. 4 shows a state in which the textile fibers are spread by the rod-shaped body 5.

[0007]

As described above, according to the present invention, by constructing a strength structure with no waste and making the whole coloring freely, even after long-term use, the surface after abrasion is in the original coloring state. Even if a through hole is formed, the strength does not deteriorate even if the through hole is formed, and there is an effect that a sand grain or the like can be sown on the surface during manufacturing to prevent slipping.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a manufacturing state of a lid for an opening according to the present invention.

FIG. 2 is a front sectional view showing a manufacturing state of a lid for an opening with a through hole according to the present invention.

FIG. 3 is a perspective view in which a part of the lid body for an opening with a through hole produced in FIG. 2 is cut away.

FIG. 4 is a partially enlarged cross-sectional view taken along arrow A in FIG.

[Explanation of symbols]

 1 Formwork surface plate part 2 Formwork side plate part 3 Woven glass fiber 4 Epoxy resin 5 Rod-like body 6 Cone part 7 Through hole

Claims (2)

(57) [Claims] 1. A bottom surface of a casting mold having an upper opening,
In advance, a plurality of woven or non-woven glass fibers,
A lid for a road opening formed by impregnating a room temperature curable material such as polyester or epoxy resin, laying it in a layered manner and laying it on the entire surface, making contact with it and casting the impregnating material in a comparatively thick manner, and curing it body. 2. The bottom surface of the casting mold having an open top,
A plurality of rods each having a pointed conical shape are erected upright and integrally planted, and the plurality of woven or non-woven glass fibers are preliminarily heated to room temperature such as polyester or epoxy resin. It is impregnated with a curable material, and it is spread from above with the rod by forced force, and is laid on the bottom surface in layers and over the entire surface.
A road opening cover body in which a plurality of through holes are formed by the rod body after the impregnated material is cast on it relatively thickly, cured and molded, and released from the mold.