JPH0312829Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a manhole cover structure for a gas station.

(b) Conventional technology Conventionally, at gas stations, various pipes for communicating with an underground oil storage tank buried underground were housed in the manhole hole, and the upper end opening of the manhole hole was closed. It is best to construct the lid so that it is almost at the same level as the ground of the gas station, but in reality, the peripheral flange of the lid overlaps the opening edge of the manhole hole in order to prevent water from flowing from the ground surface. It was hot.

(c) Problems to be solved by the invention As a result, the lid body becomes protruding and raised from the ground level, which poses a problem when driving a car on the ground surface, and the peripheral flange of the lid body There was a risk that water, sand, etc. could enter the manhole hole from the overlapped portion between the manhole hole and the manhole hole periphery.

(d) Means for solving the problem In this invention, a flange is provided protruding from the top of the periphery of the lid body, the peripheral surface below the flange is tapered, and a ring-shaped seal is provided halfway through the tapered part. The manhole hole is fitted around the manhole to form a lid body, and a lid receiving flange body is provided at the periphery of the manhole hole, and a step part on which the jaw body of the lid body is to be placed is provided on the inner peripheral side upper part of the lid receiving jaw body. established,
The lower part of the step forms an inner tapered part to be fitted with the tapered part of the lid, and the lower end of the taper forms a flat part that receives the peripheral edge of the bottom of the lid. It is an object of the present invention to provide a manhole cover structure for a gas station, in which a support leg having a protruding flange protruding from the manhole is provided vertically, and the support leg is configured to be fitable to the opening edge of a manhole hole.

(E) Function In this invention, the lid receiving flange is fitted and supported in the manhole hole, and the lid is closed on this, and the flange of the lid, the tapered part, and the ring-shaped seal, The bottom peripheral edge of the lid body contacts the stepped part, the inner circumference tapered part, and the flat part of the lid holder and the lid holder flange, respectively, and especially the tapered part of the lid and the inner periphery of the lid holder flange. The tapered part allows the lid body and the lid holder flange to fit tightly together, and the ring-shaped seal further restores the sealing effect, allowing water to flow even if the top surface of the lid body is at the same level as the ground surface. It can effectively prevent the infiltration of such substances.

(F) Effect If the embodiment of this invention is explained in detail based on the drawings, the present invention is composed of a lid body A, a manhole hole B, and a lid receiving flange body C. The lid body A is connected to the lid body 1.
A collar body 2 is provided protruding from the upper peripheral edge of the collar body, and a tapered part 3 is formed on the lower peripheral side surface of the collar body, and a ring-shaped seal 4 is fitted around the part in the middle of the tapered part 3. Moreover, the lid receiving flange body C is provided with a stepped portion 5 on which the flange body 2 of the lid body is placed on the upper part of the inner circumferential side surface, and an inner surface on which the tapered portion 3 of the lid body is to be fitted is provided below the stepped portion 5. A tapered portion 6 is provided, and the lower end of the tapered portion forms a flat portion 8 that receives the peripheral edge of the bottom surface 7 of the lid, and below the flat portion 8 is a supporting leg body 10 having a protruding collar body 9 that partially protrudes inward. The supporting legs 10 are configured to be able to fit into the opening edge of the manhole hole B.

Note that the ring-shaped seal 4 may be made of metal, synthetic resin, rubber, or the like.

11 is a slip prevention pattern formed on the top surface of the lid body A, and 12 is a handle, which is made to bulge downward at a required part of the lid body 1 so that the lid body 1 can be grasped by inserting a hand into the space. The reference numeral 13 indicates a connecting chain body interposed between the lid body A and the manhole hole B.

In addition, the top surface of the lid A is at approximately the same level as the ground G, and the lid holder flange C is buried in the ground. , the lid body A is at the same level as the ground surface.

[Brief explanation of drawings]

Figure 1 is a partial plan view of the proposed structure, Figure 2 is:
The cross-sectional side view and FIG. 3 are enlarged explanatory views of main parts. A... Lid body, B... Manhole hole, C... Lid receiving flange body, 2... Flange body, 3... Taper part, 4... Ring-shaped seal, 6... Inner tapered part.

Claims (1)

[Scope of utility model registration request] A flange body 2 is provided protrudingly on the upper circumferential edge of the lid body 1, the lower circumferential surface thereof is tapered, and a ring-shaped seal 4 is fitted around the tapered part 3 in the middle to form the lid body A. In addition, a lid receiving flange body C is provided on the peripheral edge of the manhole hole B, and a stepped portion 5 on which the lid flange body is placed is provided at the upper part of the inner circumferential side of the lid receiving flange body C, and a step portion 5 is provided at the lower part of the step. forms an inner tapered part 6 to be fitted with the tapered part 3 of the lid, the lower end of the taper forms a flat part 8 for receiving the peripheral edge of the bottom of the lid,
A support leg body 10 having a protruding flange body 9 that partially protrudes inward is provided vertically below the flat part 8, and the support leg body 10 is configured to be able to be fitted to the opening edge of a manhole hole. Manhole cover structure.