Concrete cover for side gutter

Abstract

To provide a concrete cover for a side gutter that is excellent in design and rainwater discharge performance and is easy to install.SOLUTION: A cover according to the present invention is a cover including a recess on a side face facing an adjacent cover, the recess having an inclined surface that faces a side face of a recess of the adjacent cover and is spaced farther apart toward an underside of the cover, wherein no recess is formed at a pair of placement portions provided at both ends of the side face for placement on a cover receiving surface of a side gutter, a projection facing a placement portion of the adjacent cover is formed at one of the pair of placement portions, the projection being formed on a diagonal line when viewed from above, and the projection not being exposed on a top surface of the cover.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to concrete covers for street gutters. [Background technology]

[0002] Concrete drain covers have holes formed in them to allow rainwater to fall into the drain. The larger the area of ​​these holes, the easier it is for rainwater to fall into them, but there is a trade-off in terms of the strength of the cover. Furthermore, the formation of the holes characterizes the surface design of the cover, so design quality is also required. In the lids described in Patent Document 1, adjacent lids are provided with recesses on their opposing side surfaces, and holes are formed in the opposing recesses. The side surfaces of each lid are formed with inclined surfaces that move away from the opposing side surfaces as they approach the back side. The lid described in Patent Document 2 also has a recess formed on the side surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-027275 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-235365 Summary of the Invention [Problem to be solved by the invention]

[0004] In the invention described in the cited document 1, the recess formed on the side of the lid is formed deep from the side toward the center. Furthermore, because the side is inclined, the corner where the recess is formed on the upper surface of the side is relatively thin. As a result, when a load is applied to the periphery of the recess, breakage or cracks are likely to occur in that area. [Means for solving the problem]

[0005] The present invention has been made to solve such problems, and its first aspect is defined as follows: A concrete cover used for a street gutter, A lid having a recess extending from the top surface to the bottom surface on a side surface facing an adjacent lid when placed in the gutter, The recessed portions each have an inclined surface that faces a side surface of the recessed portion of the adjacent lid and that is spaced apart toward the rear surface of the lid, The recesses are not formed in a pair of mounting portions provided at both ends of the side surface to be placed on lid receiving surfaces provided on the inner circumferential surface of the side gutter, One of the pair of mounting portions has a protrusion formed thereon that faces the mounting portion of the adjacent lid, The protrusions are formed diagonally when the lid is viewed from above, and are not exposed on the upper surface of the lid. Cover for drain.

[0006] According to the cover of the first aspect thus defined, a recess is formed on the side surface thereof. The side of the recess is made inclined and is spaced apart from the side of the opposing recess, i.e., is wide, so that even if the top opening width of the hole formed by the opposing recesses is small, rainwater can be easily drawn in, reducing the drop resistance. Furthermore, no recesses are formed on the side surfaces (placement portions) of the portions that are placed on the lid receiving surfaces formed on the opposing inner circumferential surfaces of the gutter, because even if there were recesses, they would be closed by the lid receiving surfaces. It is preferable to make the length of this recess (the direction between the side walls of the gutter, along the side of the lid) equal to the width of the opening of the gutter (a second aspect). By making the length of the recess longer in this way, sufficient rainwater can be allowed to fall even if the width of the recess (the axial direction of the gutter, the direction perpendicular to the side of the lid) is made smaller. Furthermore, because the mounting portion is supported by the lid receiving surface of the gutter, the shape retention of the end of the recess that continues to the mounting portion (the corner where the recess is formed on the upper surface of the side face) is improved. The distance between the lid receiving surfaces provided on the opposing peripheral walls of the gutter determines the opening width of the gutter, and when the recess is made equal to the opening width of the gutter, the corner of the recess is essentially supported by the lid receiving portion.

[0007] The mounting portion is provided with a protrusion, which is formed diagonally when viewed from the top surface of the lid and is not exposed on the top surface of the lid. By providing a protrusion on the mounting area, when the lid is placed, the peripheral wall of the narrow recess is prevented from interfering with the peripheral wall of the recess of the adjacent lid, thereby ensuring the function of the hole to allow rainwater to drain. Furthermore, since the protrusion is not exposed on the top surface of the lid, when placed, the lid interferes with the adjacent lid from its back side. This more reliably prevents interference between the surfaces of the lids and the resulting damage or cracks, and ensures the design of the top surface of the lid.

[0008] Furthermore, the protrusions are formed diagonally when viewed from the top of the lid. If these protrusions were formed on only one side of the lid and interfered with each other, the lid would become misaligned. To prevent this misalignment, it is necessary to check the position of the protrusions when installing the lid and make sure they do not overlap, which is time-consuming. In this regard, by forming the protrusions on the diagonal when the lid is viewed from the top, the trouble of checking the position of the protrusions when laying the lid can be eliminated.

[0009] The third aspect of the present invention is defined as follows: In the lid of the first aspect, a groove is formed on the top surface in a direction perpendicular to the side surface, and the groove communicates with the recess; On the back surface, a protrusion is formed to fit with the opposing inner peripheral surface of the side groove. According to the lid of the second aspect defined above, a groove that communicates with the recess is formed on the top surface of the lid, so that rainwater on the top surface of the lid is efficiently collected on the recess side and falls through the hole formed by the recess. In addition, the convex portion formed on the back surface of the lid fits into the inner circumferential surface of the gutter, preventing the lid from shifting relative to the gutter, preventing vibration when a load is applied to the lid and improving the durability of the lid.

[0010] A fourth aspect of the present invention is defined as follows: In the lid defined in the third aspect, a slit is formed in a part of the groove on the upper surface, the slit reaching the back surface of the lid. Such slits are formed in part of the groove, so they do not impair the design of the top surface of the lid and also contribute to the dropping of rainwater.

[0011] A fifth aspect of the present invention is defined as follows: In the recess, a second recess for a finger hook is formed on the rear surface of the lid. According to the lid of the fifth aspect defined above, the second recess for holding a finger is formed, which makes it easier to attach and remove the lid. In particular, when removing the lid, the sloped side of the recess prevents interference with the side of an adjacent lid, making the lid removal process smoother. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 shows a lid according to one embodiment of the present invention, where (A) is a plan view, (B) is a left side view, (C) is a top view, (D) is a rear view, and (E) is a bottom view. [Figure 2] Figure 2 is an enlarged plan view (view from above) of the lid. [Figure 3] FIG. 3 is an enlarged left side view of the same. [Figure 4] FIG. 4 is an enlarged top view of the same. [Figure 5] FIG. 5 is an enlarged rear view of the same. [Figure 6] FIG. 6 is an enlarged bottom view of the same. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1, the cover 1 of this embodiment is generally flat, with recesses 5a and 5b formed on both sides, and a groove 25 communicating with the recesses 5a and 5b formed on the top surface 3. The central portion 30 on the back surface of the lid 1 is flat and protrudes downward from the mounting edge 33. This mounting edge 33 is placed on a lid receiving surface formed on the inner peripheral surface of a side gutter (not shown). The boundary between the mounting edge 33 and the central portion (convex portion) 30 is indicated by reference number 34. Second recesses 30a, 30b for finger hooks are formed on the side of the central portion.

[0014] A more detailed description will be given below based on the enlarged views of FIGS. 2 to 6. Figure 2 shows a plan view of the lid 1. The outer periphery of this lid 1 is roughly rectangular, and recesses 5a and 5b are formed on the surface (side surface) facing the adjacent lid. The length (Y direction in the figure) of these recesses 5a and 5b is designed to be equal to the width of the opening of the gutter. The width (X direction in the figure) of the recesses 5a and 5b can be 5 to 10 mm. The side surfaces of the recesses 5a and 5b are inclined surfaces 7a and 7b (see FIGS. 4 to 6). These inclined surfaces 7a and 7b are inclined in a direction that separates them from the inclined surfaces 7b and 7a of the recesses of the opposing lid toward the back side. It is preferable to form these inclined surfaces 7a and 7b on the entire side surfaces of the recesses 5a and 5b (see FIGS. 4 and 6).

[0015] Returning to Figure 2, 9a and 9b in the figure indicate mounting areas. These mounting areas 9a and 9b are the end portions on the side surfaces of mounting edge 33 (see Figure 1). In Figure 2, protrusions 10a and 10b are formed on mounting area 9a, which is on the base side in the X direction and the tip side in the Y direction, and on mounting area 9b, which is on the base side in the X direction and the tip side in the Y direction. That is, when lid 1 is viewed from the top surface 3 side (the side perpendicular to the paper surface), a pair of protrusions 10a and 10b are arranged diagonally. This eliminates the need to adjust the orientation of the lids when arranging them side by side.

[0016] As shown in FIG. 3, the protrusions 10a and 10b are formed only on the back side of the side surface of the lid, and do not reach the top surface 3 and are not exposed. As a result, when the lid is installed, the projections 10a and 10b on the rear surface side interfere with each other preferentially, thereby preventing interference between the edges of the top surface of the lid and ensuring that the design of the top surface is not damaged.

[0017] Returning to Figure 2, a groove 25 is formed in the X direction in the center of the top surface 3 of the lid 1 in the Y direction. This groove 25 communicates with the recesses 5a and 5b. As shown in Figure 3, the top surface 3 is inclined toward the groove 25, so that rainwater received by the top surface 3 falls into the groove 25 and is collected in the recesses 5a and 5b. The recesses 5a and 5b face the recesses 5b and 5a of the adjacent lid to form holes, through which the rainwater falls into the gutter.

[0018] 2, a slit 20 may be formed in the approximate center of groove 25. The width (length in the Y direction) of this slit 20 is the same as or narrower than the width of groove 25. The length (length in the X direction) of slit 20 is not particularly limited, but is set so as to maintain the strength of lid 1. 3 and 5, the width of the slit 20 increases toward the rear surface. Reference numeral 21 denotes the inclined surface.

[0019] Reference numerals 30a and 30b shown in FIGS. 3 to 6 denote second recesses for holding fingers. These second recesses 30a, 30b are formed so that the recesses 5a, 5b are deeper (wider) on the back surface side at the center.

[0020] As shown in Figures 5 and 6, the back surface 30 protrudes slightly from the mounting edge 33 toward the back surface side. The protruding back surface 30 fits into the lid receiving surface of the gutter. In other words, the convex portion formed on the bottom surface of the lid 1 fits snugly into the inner peripheral surface of the gutter. This reliably prevents the lid from slipping out of place.

[0021] According to the lid 1 of the embodiment, by providing the elongated recesses 5a, 5b and the similarly elongated slit 20 in the center of the top surface, holes with an opening area large enough to allow rainwater to fall through are formed, despite the small holes. Because these holes are narrow, the lid can be sufficiently strong, and a unique design can be provided on the top surface of the lid. The recesses 5a, 5b and the slit 20 each have an inclined surface, and the opening width increases toward the back side. This allows rainwater to be efficiently sucked in and dropped into the gutter even if the opening width at the top of the lid is narrow.

[0022] When the lid is viewed from the top surface 3, protrusions 10a, 10b are formed on a pair of diagonally arranged mounting portions 9a, 9b. As a result, when the lid 1 is placed, the mounting portions 9a, 9b with the protrusions face the mounting portions 9b, 9a without the protrusions, without the need to particularly adjust the direction of the lid 1, and the placement work is not time-consuming. The protrusions 10 a and 10 b are provided on the back side of the mounting portions 9 a and 9 b and are not exposed on the upper surface 3 . As a result, when the lid 1 is installed, the backsides of the mounting portions 9a and 9b of the lid 1 are preferentially interfered with (collided with) and the upper surface is prevented from interfering with the lid 1. This more reliably prevents damage or cracks on the upper surface, and has the effect of preventing damage to the design.

[0023] Although the embodiments and modifications of the present invention have been described in detail above, the present invention is not limited to these descriptions in any way. [Explanation of symbols]

[0024] 1 lid 3 Top surface 5a, 5b recess 7a, 7b Slope 9a, 9b Placement area 10a, 10b protrusions 20 slits 25 groove 30a, 30b Second recess

Claims

1. A concrete cover used for a street gutter, A lid having a recess extending from the top surface to the bottom surface on a side surface facing an adjacent lid when placed in the gutter, The recessed portions each have an inclined surface that faces a side surface of the recessed portion of the adjacent lid and that is spaced apart toward the rear surface of the lid, The recesses are not formed in a pair of mounting portions provided at both ends of the side surface to be placed on lid receiving surfaces provided on the inner circumferential surface of the side gutter, One of the pair of mounting portions has a protrusion formed thereon that faces the mounting portion of the adjacent lid, The protrusions are formed diagonally when the lid is viewed from above, and are not exposed on the upper surface of the lid. Cover for drain.

2. The lid of claim 1 , wherein the length of the recess is equal to the width of the opening of the gutter.

3. a groove is formed on the top surface of the lid in a direction perpendicular to the side surface, the groove communicating with the recess; The lid according to claim 1 , wherein a rear surface of the lid is formed with a protrusion that fits into an opposing inner peripheral surface of the side gutter.

4. The lid according to claim 3 , wherein a slit is formed in a part of the groove on the top surface of the lid, the slit reaching the back surface of the lid.

5. The lid according to claim 1 , wherein a second recess is formed on the rear surface of the lid in the recess for a finger hook.

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