Cover for drainage ditch

Abstract

To provide a drainage ditch cover with a simple structure that offers sufficient drainage. [Solution] The gutter cover 1, which covers the opening of the gutter, comprises a rectangular flat concrete block 10 and a metal angle material 20 connected to both ends of the concrete block 10 in the width direction, having a vertical surface and a horizontal surface 20b. The angle material 20 is positioned so that the vertical surface is in contact with the end surface of the concrete block 10 in the width direction, and the horizontal surface 20b is substantially the same as the upper surface 10a of the concrete block 10. A protrusion 1a is provided at one end of the gutter cover 1 in the longitudinal direction, projecting outward in the longitudinal direction.

Description

Technical Field

[0001]

[0001] The present invention relates to a lid for a side ditch that is used by being placed on the opening of the side ditch.

Background Art

[0002] As drainage facilities provided on roads, sidewalks, parking lots, etc., U-shaped concrete side ditches are widely used, and a plurality of lids for side ditches made of concrete or reinforced with metal are arranged side by side at the openings of these side ditches in order to ensure walking safety and vehicle passability.

[0003] Generally, the lid for a side ditch is mainly composed of a rectangular flat concrete block, and a metal member may be provided as necessary to improve strength. When the lids for side ditches are arranged adjacent to each other in the longitudinal direction, there is a problem that the end faces are likely to be in close contact with each other, and rainwater flowing on the road surface is not easily smoothly introduced into the side ditch. For this reason, holes or recesses for drainage are provided in the lid body, but if the opening is enlarged, problems related to a decrease in lid strength and pedestrian safety may occur.

[0004] In response to such problems, for example, a structure has been proposed in which a steel angle is provided on the side surface of a concrete block body to form a slit-shaped gap between adjacent lids for side ditches to improve drainage (see Patent Document 1).

[0005] Although sufficient drainage has been obtained by the lid for a side ditch according to Patent Document 1, a lid for a side ditch with a simpler configuration and improved drainage has been desired.

Prior Art Documents

Patent Documents

[0007] In light of the above-mentioned problems, the present invention aims to provide a gutter cover with a simple structure that provides sufficient drainage. [Means for solving the problem]

[0008] The gutter cover according to the present invention is a gutter cover that covers the opening of a gutter, comprising a rectangular flat concrete block and metal angle members connected to both ends of the concrete block in the width direction and having a vertical surface and a horizontal surface, wherein the angle members are arranged such that the vertical surface is in contact with the end surface of the concrete block in the width direction and the horizontal surface is substantially the same as the top surface of the concrete block, and a protrusion projecting outward in the longitudinal direction is provided at one end of the gutter cover in the longitudinal direction.

[0009] Furthermore, another drainage ditch cover according to the present invention is characterized in that the protrusion is integrally formed with the concrete block.

[0010] Furthermore, another drainage ditch cover according to the present invention is characterized in that the surface of the other end of the concrete block in the longitudinal direction is formed flat.

[0011] Furthermore, another drain cover according to the present invention is characterized in that a recess into which the protrusion can be fitted is provided at the other end in the longitudinal direction of the drain cover.

[0012] Furthermore, another drain cover according to the present invention is characterized in that a groove extending in the longitudinal direction is provided on the upper surface of the concrete block, and the bottom of the groove is sloped so as to gradually become lower from the center in the longitudinal direction toward both ends in the longitudinal direction. [Effects of the Invention]

[0013] According to this invention, it is possible to provide a gutter cover with a simple structure that has sufficient drainage capabilities. [Brief explanation of the drawing]

[0014] [Figure 1] This diagram illustrates a gutter cover according to the present invention, where (a) is a cross-sectional view of a gutter cover placed in a U-shaped concrete gutter, viewed in a cross section perpendicular to the longitudinal direction, and (b) is a cross-sectional view showing an enlarged view of the area near the angle material. [Figure 2] This figure shows a drainage ditch cover according to the first embodiment of the present invention, where (a) is a perspective view and (b) is a plan view showing drainage ditch covers arranged side by side. [Figure 3] This figure shows a drainage ditch cover according to a second embodiment of the present invention, where (a) is a perspective view and (b) is a plan view showing drainage ditch covers arranged side by side. [Figure 4] This figure shows a drain cover according to a third embodiment of the present invention, where (a) is a plan view and (b) is a cross-sectional view showing section AA of (a). [Modes for carrying out the invention]

[0015] Next, embodiments of a drainage ditch cover to which the present invention is applied will be described with reference to the drawings. The embodiments described below are preferred embodiments of the present invention and therefore have various technically preferable limitations. However, the scope of the present invention is not limited to these embodiments unless otherwise stated in the following description.

[0016] (First Embodiment) First, the basic structure of the gutter cover 1 according to the present invention will be described. As shown in Figure 1(a), the gutter cover 1 is positioned over the opening of the gutter S and is provided to cover the opening of the gutter S. The upper surface of the gutter cover 1 is formed to be substantially flat, and it has a flat structure that does not easily create a step difference with the road surface. This ensures safety and ease of driving when pedestrians and vehicles pass over it.

[0017] The side groove cover 1 according to this embodiment is composed of a concrete block 10 in the shape of a rectangular flat plate and angle members 20 made of metal provided at both ends in the width direction of the concrete block 10. As shown in Fig. 1(b), the angle member 20 is composed of a vertical plate 21 and a horizontal plate 22 that intersect at right angles to each other. When the horizontal plate 22 is placed on the edge E of the side groove S, the side groove cover 1 is suspended on the side groove S. The angle member 20 has a vertical surface 20a and a horizontal surface 20b, the vertical surface 20a is provided on the vertical plate 21, and the horizontal surface 20b is provided on the horizontal plate 22.

[0018] The concrete block 10 has an upper surface 10a, an end surface 10b which is a surface at both ends in the width direction, an end surface 10c which is a surface at one end in the longitudinal direction, and an end surface 10d which is a surface at the other end in the longitudinal direction. The angle member 20 is arranged such that the vertical surface 20a contacts the end surface 10b, and is provided such that the horizontal surface 20b is substantially on the same plane as the upper surface 10a. Therefore, the upper surface of the side groove cover 1 is formed to be substantially flat. Also, in this first embodiment, the positions of the end surface 10c of the concrete block 10 and the end surface 20c of the angle member 20 are aligned in the longitudinal direction. Similarly, the positions of the end surface 10d of the concrete block 10 and the end surface 20d of the angle member 20 are also aligned in the longitudinal direction.

[0019] Reinforcing bars (not shown) are arranged inside the concrete block 10, and the reinforcing bars and the angle member 20 are joined by welding. As a result, the entire side groove cover 1 has sufficient strength.

[0020] As shown in Fig. 2(a), on the end surface 10c which is a surface at one end in the longitudinal direction of the concrete block 10, protrusions 11 protruding outward in the longitudinal direction are integrally formed. These protrusions 11 constitute the convex portions 1a of the side groove cover 1. In this embodiment, the protrusions 11 are integrally formed on the concrete block 10 and are provided at two locations on the end surface 10c. On the other hand, the end surface 10d which is a surface at the other end in the longitudinal direction of the concrete block 10 is finished flat.

[0021] As shown in Fig. 2(b), when a plurality of side gutter covers 1 are arranged side by side along the longitudinal direction of the side gutter S, the protrusion 11 of one side gutter cover 1 abuts against the end face 10d of the adjacent side gutter cover 1. Thereby, a gap G is formed between the side gutter covers 1. This gap G functions as a drainage path for rainwater. Also, when opening the side gutter cover 1, it is possible to use the gap G as a handle, and the removal work of the side gutter cover 1 can be easily performed.

[0022] (Second Embodiment) Next, a second embodiment of the present invention will be described. Note that the same reference numerals are given to the same or corresponding components as those in the first embodiment, and the description thereof will be omitted. As shown in Fig. 3(a), the side gutter cover 1 according to the present embodiment is characterized in that the end face positions of the longitudinal direction both ends of the concrete block 10 and the angle member 20 do not coincide.

[0023] Specifically, at one end in the longitudinal direction, the end face 10c of the concrete block 10 protrudes outward in the longitudinal direction from the end face 20c of the angle member 20, and this protruding portion constitutes the convex portion 1a. On the other hand, at the other end in the longitudinal direction, the end face 10d of the concrete block 10 is formed so as to be located inward in the longitudinal direction from the end face 20d of the angle member 20, and this recessed portion constitutes the concave portion 1b.

[0024] <0000\103>Also, the recess amount of the concave portion 1b is set to be larger than the protrusion amount of the convex portion 1a, that is, the longitudinal length of the angle member 20 is configured to be longer than the longitudinal length of the concrete block 10.

[0025] As shown in Fig. 3(b), when a plurality of side gutter covers 1 according to the present embodiment are arranged side by side, the convex portion 1a fits into the concave portion 1b of the adjacent side gutter cover 1. Thereby, the displacement in the direction perpendicular to the longitudinal direction of the side gutter covers 1 is suppressed.

[0026] Furthermore, even when the protrusion 1a of one gutter cover 1 is fitted into the recess 1b of the adjacent gutter cover 1, a gap G is formed between the concrete blocks 10. This gap G allows rainwater flowing on the road surface to be guided into the gutter S, and when opening the gutter cover 1, the cover can be lifted by placing a hand on the gap G, making the opening and closing operation easy.

[0027] (Third embodiment) Next, a third embodiment of the present invention will be described. Note that components identical to or corresponding to those in the first and second embodiments are denoted by the same reference numerals and their descriptions are omitted. As shown in Figure 4(a), in the gutter cover 1 according to this embodiment, a groove 12 extending along the longitudinal direction is formed on the upper surface 10a of the concrete block 10.

[0028] As shown in the cross-sectional view in Figure 4(b), the bottom of the groove 12 is sloped in the longitudinal direction, with the bottom 12a located in the longitudinal center being the highest point and the bottom 12b located at both ends in the longitudinal direction being the lowest point. In other words, the bottom of the groove 12 has a slope that gradually decreases from the longitudinal center toward both ends.

[0029] With this configuration, rainwater collected on the upper surface 10a flows along the groove 12 to the longitudinal end and is drained into the side ditch S through the gap G formed between adjacent side ditch covers 1. The number and width of the groove 12 can be set as appropriate. It is also possible to provide a widthwise slope on the upper surface 10a to guide rainwater into the groove 12. This embodiment can of course also be applied to the side ditch covers according to the first and second embodiments described above.

[0030] (modified version) In the drain cover 1 according to the first embodiment, the projection 11 was integrally formed with the concrete block 10, but it is also possible to form the projection 11 separately and connect it to the concrete block 10. Furthermore, the shape, amount of protrusion, and number of projections 11 can be set as appropriate.

[0031] Furthermore, in the gutter cover 1 according to the first embodiment, the end face 10d of the concrete block 10 was flat, but it is also possible to provide a recessed portion at a position corresponding to the projection 11. When multiple such gutter covers are installed side by side, the projection 11 is accommodated in the recessed portion of the adjacent gutter cover, and displacement perpendicular to the longitudinal direction of the gutter covers is suppressed.

[0032] In the gutter cover 1 according to the second embodiment, the recess amount of the recess 1b was set to be greater than the protrusion amount of the convex portion 1a. However, it is also possible to make the recess amount of the recess 1b and the protrusion amount of the convex portion 1a approximately equal, and it is also possible to make the recess amount of the recess 1b smaller than the protrusion amount of the convex portion 1a. Furthermore, it is also possible to provide the convex portion 1a and the recess 1b on an angle material.

[0033] Furthermore, in the drainage ditch cover according to this invention, it is possible to apply an anti-slip treatment or anti-slip coating to the angle material. This prevents pedestrians and cyclists from slipping, and also prevents the drainage ditch cover itself from sliding and moving. It is also possible to apply phosphorescent paint to the top surface of the concrete block or the horizontal surface of the angle material. This improves visibility at night. In addition, holes for handles and holes for collecting water can be provided in the concrete block. [Explanation of symbols]

[0034] 1. Cover for drainage ditch 1a Convex part 1b recess 10 Concrete Blocks 10a Top 10b End face (face at the end in the width direction) 10c End face (the face at one end in the longitudinal direction) 10d End face (the face at the other end in the longitudinal direction) 11 Protrusions 12 grooves 12a bottom 12b bottom 20 Angle material 20a vertical plane 20b horizontal plane 20c End face (the face at one end in the longitudinal direction) 20d End face (the face at the other end in the longitudinal direction) 21 Vertical plate 22 horizontal plate S-shaped drainage ditch E edge G Gap

Claims

1. A gutter cover that covers the opening of a gutter, Rectangular flat concrete block, The concrete block is connected to both ends in the width direction and comprises a metal angle material having a vertical surface and a horizontal surface, The angle material is positioned such that its vertical surface is in contact with the end surface in the width direction of the concrete block, and its horizontal surface is substantially flush with the upper surface of the concrete block. The aforementioned gutter cover is provided with a protrusion that extends outward in the longitudinal direction at one end in the longitudinal direction. A drain cover characterized by the following features.

2. The aforementioned protrusion is integrally formed with the concrete block. The drain cover according to feature 1.

3. The other end of the concrete block in the longitudinal direction is formed flat. The drain cover according to feature 2.

4. A recess into which the protrusion can be fitted is provided at the other end in the longitudinal direction of the drain cover. The drain cover according to feature 1.

5. A groove extending in the longitudinal direction is provided on the upper surface of the concrete block. The bottom of the groove is sloped so that it gradually becomes lower from the longitudinal center toward both longitudinal ends. A drain cover according to any one of features 1 to 4.

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