JPH018624Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a drainage system that closes the opening of a side gutter that is laid along the shoulder of a road, and allows rainwater on the road to fall into the side gutter. This invention relates to a concrete gutter cover having a plate.

[Prior art and problems]

Conventional concrete gutter covers with drainage parts are disclosed in Japanese Utility Model Publication No. 54-4827 or Japanese Utility Model Publication No. 56-3421.
As shown in the above publication, the drainage portion is formed of a metal or synthetic resin grid body, and anchor portions embedded in the concrete body are extended from the side wall surfaces of the grid body.

However, if the grid is made of metal such as cast iron, if the surface is scratched, rust will occur in that area, while if the grid is made of synthetic resin,
There was a problem that the grid was easily worn away by the passage of vehicles and pedestrians, and its weather resistance was also weak.

Furthermore, with conventional drains, if that part is damaged, the surrounding concrete will crack and break due to the presence of the anchors extending into the side wall, making it difficult to replace just the drain. There were also problems.

[Purpose of invention]

The purpose of this invention is to improve corrosion resistance, abrasion resistance, breakage resistance, and weather resistance by making the drain plate from ordinary porcelain (ceramics), and by not providing an anchor part on the drain plate. To provide a concrete gutter cover which prevents surrounding concrete from cracking and being damaged when a drainage board is damaged.

[Structure of the idea]

In the present invention, a drainage hole is formed in a part of a concrete gutter cover, a step is formed on the inner wall of the drainage hole, and a drainage plate made of ordinary porcelain is placed on the inner wall of the drainage hole. The drain plate is held in contact with the upper surface of the stepped portion, and the drain plate has through holes arranged in a staggered pattern, and the diameter of the through holes is 10 to 20 mm, and the drain plate is held in the drain hole portion. This concrete gutter cover has a drain plate whose upper surface does not protrude from the upper surface of the gutter cover.

[Example of idea]

The present invention will be described with reference to the embodiments shown in the drawings.

Figure 1 is a perspective view of the present invention, Figure 2 is the previous figure A-
It is an A-line sectional view.

Reference numeral 1 in the figure is the main body of the concrete cover for side ditches, and drainage holes 2 are bored in some (about one or two places) of the main body. The main body 1 is made of resin concrete or the like as well as ordinary concrete.

Steps 3 are formed on four sides of the inner wall surface of the drain hole 2, and a drain plate 4 made of ordinary porcelain (ceramics) is placed on the steps 3 in a supported manner on all four sides. Since the drain plate 4 is made of ordinary porcelain, its surface is rough, and this rough surface comes into contact with the top surface of the stepped portion 3 and the inner wall surface of the drainage hole portion 2 to improve adhesion to concrete. (Especially when concrete is poured and formed).

Next, this drain plate 4 is provided with through holes 5 for drainage with a hole diameter of 10 to 20 mm arranged in a staggered pattern.If the hole diameter is less than 10 mm, the through holes will easily become clogged even with small debris. On the other hand, if it exceeds 20 mm, it will be inconvenient for pedestrians, especially women, as their heels may get pinched when walking. Since the through holes 5 are arranged in a staggered pattern, the strength of the drain plate 4 is considerably stronger than in other arrangement forms.

In addition, since the drain plate 4 held in the drain hole 2 is located in a position where its upper surface does not protrude from the upper surface of the gutter cover body, the load distribution against wheel loads of vehicles etc. is good, and sufficient strength is achieved. can be maintained, and pedestrians will not be hindered when walking. Especially considering the current traffic conditions, the existence of vehicles running onto sidewalks cannot be denied, and for this reason, it is necessary to consider a considerable safety factor when it comes to the strength of the drainage board, but this invention meets this request. This is a sufficient response.

[Effect of idea]

This invention uses ordinary porcelain as the material for the drain plate, so it does not rust, and even when a vehicle tire runs over it, it has excellent wear resistance, breakage resistance, and weather resistance, so it is durable. If the drainage board is damaged, there is no anchor part, so just remove the old drainage board and replace it with the ordinary porcelain drainage board of this invention, which can be mass-produced by extrusion molding. By installing a new one, the overall repair becomes easier.

Furthermore, the drainage board of the present invention has characteristics such as good adhesion to concrete, smooth drainage of rainwater, no problem for pedestrians walking, and strong strength.

[Brief explanation of drawings]

Figure 1 is a perspective view of the present invention, Figure 2 is the previous figure A-
It is an A-line sectional view. 1...Body, 2...Drain hole, 3...Step, 4
...Drainage board, 5...Through hole.

Claims (1)

[Scope of utility model registration request] A drainage hole is formed in a part of the concrete gutter cover, a step is formed on the inner wall of the drainage hole, and a drainage plate made of ordinary porcelain is placed on the inner wall of the drain hole and the upper surface of the step. The drainage board is held in contact with the drainage board, and the drainage board has through holes arranged in a staggered pattern, and the diameter of the through hole is 10 to 20 mm. A concrete gutter cover having a drain plate located at a position that does not protrude from the top surface of the cover.