Waterway cover

Abstract

To provide a cover for a waterway that can easily and reliably cover the waterway. [Solution] A channel cover 1 is detachably attached to a channel 50 having an opening 56 formed between a pair of side walls 52 rising from a bottom wall 54, and comprises a lid 10 positioned to cover the opening 56, and a first engaging portion 20 and a second engaging portion 30 provided on both sides in the width direction of the lid 10 to engage with the pair of side walls 52, wherein the first engaging portion 20 comprises a first contact portion 22 extending laterally from the lid 10 and abutting against the upper surface of the side wall 52, and a second contact portion 24 extending downward from the lid 10 and abutting against the inner surface of the side wall 52, and the second engaging portion 30 is formed in a bent shape so as to protrude laterally from the lid 10 and its tip abuts against the outer surface of the side wall 52.

Description

Technical Field

[0006] , , , ,

[0001] The present invention relates to a cover for a water channel.

Background Art

[0002] As a conventional cover for a water channel, Patent Document 1 discloses a covering material main body made of a planar mesh body, which is formed in an arch shape as a covering material for a side groove. This covering material for the side groove is attached to an angled holding member fixed to the corner of the side groove by a plurality of hinges, and covers the upper part of the side groove to prevent people, bicycles, etc. from falling into the water channel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the covering material for the side groove disclosed in Patent Document 1 needs to attach a holding member to the corner of the side groove during use, the work becomes complicated and there is a risk of damaging the side groove.

[0005] Therefore, an object of the present invention is to provide a cover for a water channel that can easily and reliably cover the water channel.

Means for Solving the Problems

[0006] The object of the present invention is achieved by a channel cover that can be detachably attached to a channel having an opening formed between a pair of side walls rising from a bottom wall, comprising a lid positioned to cover the opening, and a first engaging portion and a second engaging portion provided on both sides of the lid in the width direction and engaging with the pair of side walls, wherein the first engaging portion comprises a first contact portion extending laterally from the lid and abutting against the upper surface of the side wall, and a second contact portion extending downward from the lid and abutting against the inner surface of the side wall, and the second engaging portion is formed in a curved shape so as to protrude laterally from the lid and its tip abuts against the outer surface of the side wall.

[0007] In this waterway cover, it is preferable that the first engaging portion is provided on both sides of the central portion of the cover, and that the second engaging portion is provided on the end side of the cover than the first engaging portion.

[0008] The cover preferably comprises a plurality of main frames arranged at intervals along the waterway and whose upper parts are curved in an arc shape, and a plurality of reinforcing frames extending along the waterway to reinforce the main frames from the inside, and the first contact portion, the second contact portion and the second engaging portion are preferably formed by curving a rod-shaped body, and both ends are preferably supported by the cover. [Effects of the Invention]

[0009] According to the waterway cover of the present invention, waterways can be easily and reliably covered. [Brief explanation of the drawing]

[0010] [Figure 1] This is a front view of a waterway cover according to one embodiment of the present invention. [Figure 2] Figure 1 is a side view of the waterway cover as seen in the direction of arrow A. [Figure 3] Figure 1 is a plan view of the main parts of the waterway cover shown. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 is a front view of a waterway cover according to one embodiment of the present invention. Figure 2 is a side view of the waterway cover shown in Figure 1, viewed in the direction of arrow A. As shown in Figures 1 and 2, the waterway cover 1 comprises a lid 10 and first engaging portions 20 and second engaging portions 30 provided on both sides of the lid 10 in the width direction, and can be attached to a waterway 50 formed in the ground G.

[0012] The waterway 50 is an open waterway in which a pair of side walls 52, 52 rise from both sides in the width direction of the bottom wall 54, and an opening 56 is formed between the upper ends of the pair of side walls 52, 52.

[0013] The cover 10 comprises a plurality of main frames 12 (eight in this embodiment) arranged at equal intervals along a straight waterway 50, and a plurality of reinforcing frames 14 (eleven in this embodiment) that reinforce the main frames 12. The main frames 12 and reinforcing frames 14 are made of rod-shaped bodies such as reinforcing bars.

[0014] The main frame 12 is formed by curving a rod-shaped body into an arc and is arranged along a vertical plane perpendicular to the waterway 50. The reinforcing frame 14 is formed in a straight rod shape so as to extend along the waterway 50 and is arranged at intervals along the main frame 12 to reinforce the main frame 12 from the inside, and is fixed by welding or the like. The main frame 12 does not necessarily have to be arc-shaped; for example, it may be wave-shaped, polygonal, or elliptical arc-shaped.

[0015] The size of the cover 10 can be exemplified by a standard dimension of, for example, a width of 1 m along the cross-section of the waterway 50 and a length of 1 m along the waterway 50. However, the size of the cover 10 is not particularly limited, and it can also be custom-designed and manufactured to fit the size of the opening 56 of the waterway 50. Furthermore, if it is necessary to cover a long section of the waterway 50, multiple waterway covers 1 can be connected and used along the waterway 50.

[0016] The first engaging portions 20 are provided on both sides of the widthwise edge of the lid 10, flanking the central portion along the waterway 50, and are arranged in a total of four locations. The first engaging portions 20 include a first contact portion 22 and a second contact portion 24 formed by curving a rod-shaped body such as a reinforcing bar into an arc shape. The first contact portion 22 and the second contact portion 24 are formed such that the distance between their ends is slightly smaller than the distance between adjacent main frames 12 of the lid 10. Both ends of the first contact portion 22 and the second contact portion 24 are supported by the lid 10 by being fixed to the reinforcing frame 14, which is the furthest laterally and lowest of the multiple reinforcing frames 14, by welding or using connectors.

[0017] The first contact portion 22 is provided so as to extend laterally (outward in the width direction of the waterway 50) from the edge of the cover 10 and abuts against the upper surface of the side wall 52 of the waterway 50. The second contact portion 24 is provided so as to extend downward from the edge of the cover 10 and abuts against the inner surface of the side wall 52 of the waterway 50. The shapes of the first contact portion 22 and the second contact portion 24 are not particularly limited and may be, for example, flat.

[0018] The second engaging portion 30 is provided on the edges of both sides in the width direction of the lid 10, closer to the waterway 50 than the first engaging portion 20, and is located in a total of four places. The second engaging portion 30 is formed by curving a rod-shaped body such as a reinforcing bar, so that the distance between its ends is slightly smaller than the distance between the main frames 12. Both ends of the second engaging portion 30 are supported by the lid 10 by being fixed to the reinforcing frame 14, which is the furthest laterally and lowest of the multiple reinforcing frames 14, by welding or using connectors. The second engaging portion 30 is provided so as to protrude laterally from the edge of the lid 10, and the tip, which is the central part of the rod-shaped body, is formed to bend downward and abut against the outer surface of the side wall 52.

[0019] The waterway cover 1 having the above configuration is detachably attached to the waterway 50 such that the cover 10 covers the opening 56, by the engagement of the first engaging portions 20 and second engaging portions 30, which are formed at four locations on the cover 10, with a pair of side walls 52, 52.

[0020] As shown in the partial plan view in FIG. 3, the first abutting portion 22 provided in the first engaging portion 20 abuts on the upper surface 52a of the side wall 52, and the second abutting portion 24 provided in the first engaging portion 20 abuts on the inner surface 52b of the side wall 52. Further, the bent tip portion of the second engaging portion 30 abuts on the outer surface 52c of the side wall 52. In this way, by the first abutting portion 22, the second abutting portion 24, and the second engaging portion 30 abutting and engaging with different surfaces of the side wall 52 respectively, displacement and the like of the lid body 10 after attachment can be reliably prevented, and the water channel cover 1 can be easily and reliably attached. In the water channel 50 of the present embodiment, the upper portion of the side wall 52 is formed to protrude from the ground G, but the upper surface of the side wall 52 may be flush with the ground G. In this case, the tip portion of the second engaging portion 30 can be embedded in the ground G and abutted on the outer surface of the side wall 52.

[0021] In the water channel cover 1 of the present embodiment, the first engaging portion 20 is provided on both sides of the cover body 10 sandwiching the central portion along the water channel 50, and the second engaging portion 30 is provided on the end side of the cover body 10 rather than the first engaging portion 20. Therefore, as shown in FIG. 3, the abutting portion between the first engaging portion 20 and the side wall 52 serves as a fulcrum, and a force acting outward in the width direction in the direction of arrow B acts on the end portion of the edge portion of the cover body 10. By such a force acting on the four corners of the cover body 10, the entire cover body 10 can be more reliably fixed to the water channel 50.

Description of Reference Numerals

[0022] 1 Water channel cover 10 Lid body 20 First engaging portion 22 First abutting portion 24 Second abutting portion 30 Second engaging portion 50 Water channel 52 Side wall 54 Bottom wall 56 Opening

Claims

1. A channel cover that is detachably attached to a channel having an opening formed between a pair of side walls rising from the bottom wall, A cover body is positioned to cover the aforementioned opening, The lid comprises a first engaging portion and a second engaging portion provided on both sides in the width direction of the lid, which engage with a pair of the side walls, The first engaging portion comprises a first contact portion extending laterally from the lid and abutting against the upper surface of the side wall, and a second contact portion extending downward from the lid and abutting against the inner surface of the side wall. The second engaging portion is a channel cover formed in a bent shape so as to protrude laterally from the cover and its tip abuts against the outer surface of the side wall.

2. The first engaging portion is provided on both sides of the central part of the cover, The water channel cover according to claim 1, wherein the second engaging portion is provided on the end side of the cover than the first engaging portion.

3. The cover comprises a plurality of main frames arranged at intervals along the waterway and whose upper parts are curved in an arc shape, and a plurality of reinforcing frames extending along the waterway to reinforce the main frames from the inside. The water channel cover according to claim 1 or 2, wherein the first contact portion, the second contact portion, and the second engaging portion are formed by curving a rod-shaped body, and both ends are supported by the cover body.

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