JP2960706B2 - Lid body of underground structure lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to <br/> cover the body of the lid for underground structures, pedestrian slipping or vehicle in particular discharge rainwater and sediment and whether we quickly cover the body For underground structures that can effectively prevent tires from slipping
Directed to cover the body of the lid.

The term "cover for underground structures" as used in the specification of the present application refers to a large iron cover, a manhole cover, a sewage basin cover for closing an opening through an underground buried object, underground structure facility, etc. in the sewer and the ground. Opening / closing iron lids for open / closed gutters to protect underground facility equipment and underground cables in power and communications, iron lids for power transmission, iron lids for distribution, buried conduits under the road surface for water supply and gas piping, and their auxiliary equipment and ground A fire hydrant cover, a water valve cover, a partition valve cover, an air valve cover, a gas pipe cover, a water meter cover, and the like having a function as an opening / closing door connecting the above.

[0003]

BACKGROUND OF THE INVENTION sidewalk and roadway, etc. installed the surface of the lid the body of the lid for underground structures in, the uneven pattern which also serves as a decoration is formed, a pedestrian at the time of rainy weather, etc. slipped foot And prevent the vehicle from slipping.

[0004] as a lid the body with improved surface texture to achieve this anti-slip, for example, Japanese Utility Model 60-271
It is disclosed in 60 No. Gazette.

In this method , a hexagonal convex portion and a Y-shaped convex portion are formed on the surface of the lid body so as to be uniformly distributed so as to have a constant pattern pattern, and these convex portions are formed. Is a concave portion.

[0006] According to the pattern of surface texture in combination with such projections and recesses, even if the pedestrian or vehicle has been traveling from either direction, is to be able to prevent the slippage of the foot sliding and tires I have. Further, since all of the concave portions formed around the convex portions are continuous, even if soil or the like accumulates on the surface, there is an advantage that the concave portions can be discharged like a passage. .

[0007]

However, in the device disclosed in Japanese Utility Model Application Laid-Open No. 27160/1985, the outer edge portion is formed on the outer periphery of the lid main body, so that even if all of the recesses are continuous, the lid is not covered. When the main body is taken as a whole, the concave portion is surrounded by the outer edge. Moreover, the recess only forms a flat surface which is recessed at a uniform depth with respect to the upper surface level, and the step between the recess and the outer edge is also provided with a substantially right angle or a draft when casting. In order to guide the rainwater, sediment, and the like accumulated in the concave portion to the outer peripheral side and discharge it to the outside of the lid main body, a certain amount of artificial treatment is necessary, and it will naturally occur over time. It cannot be expected to be discharged.

[0008] Thus, in the conventional structure, the thus accumulated rainwater and sediment in Table <br/> surface of the cover the body thereof rapid discharge is difficult, tends to remain trapped on the surface. Retention of rain water or earth and sand on these surfaces, so that the effects such as interposed example rollers between the tire and the like and Futahon surface of when the passing vehicle or the like, even if the lid Body Even if the surface is provided with an uneven pattern for preventing slip, there is a problem that its effect is significantly reduced.

An object of the present invention is to provide a cover for an underground structure, which is capable of promptly discharging accumulated matters such as rainwater and earth and sand, thereby preventing a doubling of slip caused by the accumulated matters. Is to provide the body .

[0010]

According to the present invention, there is provided a lid body for an underground structure having a concave-convex pattern on its surface and an outer edge formed on the outer periphery. A guide surface that rises gently toward the outer periphery of the lid body between the bottom surface of the adjacent concave portion and the upper surface of the outer edge portion
Multiple at equal intervals in the circumferential direction of the outer edge of the lid body
The outer edge is formed everywhere between adjacent guideways
Having approximately the same height as the upper surface of the
A projection protruding to a boundary position with the bottom surface of the portion is provided.

[0011] With such a configuration, rainwater and earth and sand accumulated in the concave portion can be smoothly and quickly discharged to the outside of the lid body.
Ru can effectively prevent a slip due to rainwater and sediment.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG . 1 shows a cover of an underground structure according to the present invention.
It is a longitudinal section showing the important section in the state where a lid main part was laid in a receiving frame .

[0013]

In the figure, a lid body 2 is conventionally tapered fitted to a receiving frame 1 installed underground with its upper end surface adjusted to the level of a road surface. As will be described later, the lid main body 2 has an uneven pattern on its surface, and each of the convex portions is formed such that the height of the upper end surface thereof is substantially the same as the height of the upper end surface of the receiving frame 1.

FIG. 2 is a plan view of the lid body 2, which has a surface pattern in which convex portions 3 each having a hexagonal planar shape are independently arranged, and an outer edge portion 4 is formed on the outer periphery. The heights of the upper end surface of the convex portion 3 and the upper surface of the outer edge portion 4 are substantially the same as the height of the upper end surface of the receiving frame 1 as described above.

On the surface of the lid body 2, in addition to the pattern of the convex portions 3, five concave portions 5a, 5b, 5c, 5d, 5 concentrically.
5e is formed stepwise. FIG. 3 is a partially cutaway perspective view showing a main part of the surface of the lid main body 2. As shown, the recesses 5a to 5
The bottom surface of each of e is horizontal, but the concave portion 5a at the center is formed shallowest and the concave portion 5e adjacent to the outer edge portion 4 is formed deepest. When the recesses 5a to 5e are configured as described above, when rainwater is applied during rainfall,
Rainwater tends to flow from the center of the lid body 2 toward the outer periphery. Also, the earth and sand covered on the surface of the lid body 2 can be similarly guided from the center to the outer periphery with rainwater by rainfall or by wind pressure or the like passing through the vehicle,
Since rainwater and earth and sand do not stay in the central portion of the lid main body 2, slippage can be prevented.

Further, a guide surface 6 for smoothly discharging rainwater and earth and sand from the concave portion 5e is provided at a boundary portion with the outer edge portion 4 adjacent to the concave portion 5e on the outer peripheral side.

FIG. 4 is a partial perspective view showing the details of the guide surface 6. The guide surface 6, which is connected to the bottom surface of the concave portion 5 e and gently rises upward toward the outer periphery of the lid body 2, gradually rises in the circumferential direction. The protrusions 4a are formed at intervals, and the protrusions 4a projecting toward the center of the lid body 2 at the same height as the upper surface of the outer edge portion 4 are located between the protrusions. These projections 4
In a, the surface facing the center of the lid body 2 is projected in a triangular shape, and the two surfaces are guide surfaces 4b and 4c for guiding rainwater and earth and sand to the positions of the guide surfaces 6 on both sides.

By providing the guide surface 6, rainwater and earth and sand guided from the central portion of the lid body 2 to the concave portion 5e on the outer peripheral side can be smoothly and promptly passed through the guide surface 6 due to passage of vehicle tires and the like. Since it is discharged out of the lid main body 2, slip can be more effectively prevented.

Further, in the present embodiment, the projections 4 projecting toward the center of the lid body 2 between the guide surfaces 6.
Since a is formed, the corner portions and the straight portions of the projections 4a can increase the frictional force against the pedestrian's shoes, vehicle tires, and the like, and can effectively prevent slippage. .

Each of the projections 3 of the lid body 2 is formed such that the height of the upper end surface thereof is substantially equal to the height of the upper end surface of the receiving frame 1. The height of the upper end surface of the vehicle is substantially equal to the height of the road surface, so that it does not hinder the progress of pedestrians and vehicles, and secures safety during traffic.

[0022] Incidentally, the partition fraud and mitigating risk recess in concentric steps in FIG. 2, the bottom surface of each recess is a horizontal surface, but may each bottom as downward gradient toward the periphery from the center of the lid body, The step may be formed in a concentric hexagonal shape (polygonal shape) instead of a concentric shape.

Further, the concave portion may be formed continuously without being partitioned by a step, and the bottom surface thereof may have a downward slope. On the other hand, in the present invention, there is no particular limitation on the planar shape of the convex portion may be any shape, for the method of arranging the convex portions, not name limitation.

Further, in the embodiment, the round lid main body has been described. However, it is a matter of course that a rectangular lid main body may be used instead.

[0025]

According to the lid body of the lid for underground structures of the present invention,
A guide surface that rises gently toward the outer periphery of the lid body is provided at intervals substantially equal to the circumferential direction of the outer edge of the lid body between the bottom surface of the concave portion adjacent to the outer edge portion of the lid body and the upper surface of the outer edge portion.
And multiple pieces are formed between adjacent guideways.
At the same height as the upper surface of the outer edge and at least
Also has a projection that protrudes to the boundary between the guide surface and the bottom of the recess, so that the rainwater and sediment accumulated in the recess can be smoothly and quickly discharged to the outside of the lid body, effectively preventing slip caused by rainwater and soil. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of a lid body of a lid for underground structures of the present invention.

FIG. 2 is a plan view of a lid main body.

FIG. 3 is a partially cutaway perspective view of a main part showing a stepped shape and an outer edge of a concave portion on a surface of a lid main body.

FIG. 4 is a partial perspective view showing details of a guide surface.

[Explanation of symbols]

 1: receiving frame 2: lid body 3: convex portion 4: outer edge portion 4a: projection 4b, 4c: guide surface 5a to 5e: concave portion 6: guide surface

──────────────────────────────────────────────────続 き Continuation of the front page (72) Koji Terada, Inventor 5-1-309, Kamadai-cho, Hodogaya-ku, Yokohama-shi (56) References Japanese Utility Model SHO 60-27160 (JP, U) Japanese Utility Model Hei 6-40681 (JP) , Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 29/14 E03B 9/10 E03F 5/04

Claims (1)

(57) [Claims] 1. A cover body for an underground structure lid having an uneven pattern formed on the surface and an outer edge formed on the outer periphery, wherein a lid is provided between a bottom surface of the concave portion adjacent to the outer edge and an upper surface of the outer edge. double at approximately equal intervals guide surface gradually rises toward the outer periphery of the main body in the circumferential direction of the outer edge of the lid body
The outer edge is formed everywhere between adjacent guideways
Having approximately the same height as the upper surface of the
A cover body for a cover for an underground structure, wherein a protrusion protruding to a boundary position with a bottom surface of a concave portion is provided.