JPH0315652Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the structure of a roadside lid and its receiving frame for fire hydrant boxes, hydrant boxes, etc. buried in roads.

(Prior art) In a conventional square road lid structure, a tapered surface that widens downward is formed over the entire length on the inner peripheral surface of a square opening of a receiving frame that accommodates the lid. A tapered surface is formed over the entire length of the outer circumferential surface of the mold lid that becomes narrower toward the bottom, and when the lid is loaded into the receiving frame, the tapered surfaces of the lid and the receiving frame are brought into close contact with each other over the entire surface.

(Problem to be solved by the invention) However, although this combination structure of the lid and the receiving frame is preferable in terms of preventing rattling of the lid and generation of noise caused by passing vehicles, Since the tapered surface of the entire outer circumferential surface of the square opening is in close contact with the tapered surface of the entire inner circumferential surface of the rectangular opening, the resistance when removing the lid from the receiving frame is unavoidable, and the This may cause trouble in opening the lid during use.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a combination structure of a road-use lid and a receiving frame, which can accurately prevent rattling and noise generation, and also allow the lid to be opened smoothly with little resistance.

(Means for Solving the Problems) As explained below using the reference numerals in the attached drawings, the combination structure of the road cover and the receiving frame of the present invention has a downward protruding portion 3 on the inner lower surface of the outer circumferential protruding edge portion 2. It has a rectangular lid 1 provided with a rectangular lid 1 and a rectangular opening 4 into which the downward protrusion 3 is fitted, and an inner periphery on which the outer peripheral protrusion 2 is placed. It consists of a receiving frame 6 from which a flange 5 is protruded, and several tapered protuberances 7 are symmetrically protruded from the inner surface of the inner circumferential flange 5 and widen downward. The outer circumferential surface 3a of the lower protrusion 3 is formed into a slope that matches the inclination angle of the tapered protrusion 7, and the outer circumferential surface 3a of the downward protrusion 3 is brought into close contact with the tapered protrusion 7.

(Function) The receiving frame 6 is installed horizontally at the uppermost end of the road buried object 14 such as a fire hydrant box, and is buried in the pavement layer so that its upper surface substantially coincides with the road surface 15. The square lid 1 is horizontally fitted into the square opening 4 of the receiving frame 6 from above. The lid 1 is prevented from moving downward by having the outer circumferential flange 2 placed on the inner circumferential flange 5 of the receiving frame 6. Furthermore, the outer circumferential surface 3a of the lower protrusion 3 is in close contact with the tapered protuberance 7 of the inner circumferential flange 5, so that the lid 1 is prevented from moving in the longitudinal and lateral directions.

(Embodiment) In the illustrated embodiment, the iron square lid 1 and the receiving frame 6 are approximately rectangular in plan view, and the tapered raised portion 7 is formed on two long sides of the rectangular inner peripheral flange 5. There are two protruding pieces. The tapered protuberances 7 on each long side are shifted toward the short side and formed in mutually symmetrical positions in order to distribute and receive the applied load as evenly as possible. The downward protrusion 3 of the lid 1 is formed into a short square tube shape. These tapered protuberances 7 are
It is extremely short and small compared to the length of the entire long side.

A vertical hole 11 is provided at both the left and right ends of the short side of the lid 1, into which a handle 10 for opening/closing operation is fitted so as to be vertically movable.
2 prevents it from coming off. The upper surface of the edge on one long side of the lid 1 is engraved with the word "fire hydrant" to indicate that the buried object below the lid 1 is a fire hydrant. "Okayama City" is written on the top of the edge to indicate the person in charge of placing the buried object.
There is a marking engraved on it. Further, a road sign mark 8 indicating that parking is prohibited is engraved on the upper surface of the center portion of the lid 1.

The above-mentioned "fire hydrant" indication will be changed accordingly if the buried object is something else such as an air valve or exhaust body, and if the person responsible for placing the buried object is different, the above-mentioned indication will be changed accordingly. The display of "Okayama City" will also be changed accordingly.

A shallow recess 6a is provided on the upper surface of the outer periphery surrounding the opening 4 of the receiving frame 6, and the recess 6a is filled with colored synthetic resin material or colored concrete 13, and the surface thereof is filled with glass bead-shaped aggregate, etc. A light reflecting material 9 or a fluorescent material is attached. A similar light-reflecting material 9 or fluorescent material is also attached to the surface of the mark 8 of the road sign.

Therefore, not only the appearance of the lid 1 and the receiving frame 6 is improved aesthetically, but also the driver of the vehicle can protect himself from the light-reflective material 9 or fluorescent material that is irradiated by the headlight not only during the day but also at night. Using radiation, the location of underground objects such as fire hydrants can be immediately and clearly recognized, and parking above or near them, which is prohibited by law, can be avoided. In addition, firefighters and the like can quickly approach target equipment even at night.

The entire upper surface of the lid 1 other than the display area of marks such as road signs is provided with an uneven pattern 16 for preventing vehicle tires from slipping. Furthermore, an anti-slip uneven pattern 17 can be similarly provided on the upper surface of the outer peripheral part of the receiving frame.

(Effect of the invention) As described above, in the present invention, on the inner surface of the inner peripheral flange 5 of the receiving frame 6 on which the outer peripheral protrusion 2 of the square lid 1 is placed, there are several A tapered protuberance 7 is symmetrically protruded, and the outer peripheral surface 3a of the downward protrusion 3 inside the outer peripheral protrusion 2 is connected to the tapered protuberance 7.
Since the outer circumferential surface 3a is in close contact with the tapered protuberance 7 when the lid is loaded, the square lid 1 is stably supported without rattling when a vehicle passes, thereby reducing noise generation. There is no problem, and the contact area between the inner peripheral flange 5 and the downward protrusion 3, which causes resistance when the square lid 1 is opened, is only the tapered upper protrusion 7 formed to protrude partially. The removal operation of the square lid 1 can be performed smoothly with little effort, and will not be a hindrance during emergency use of a fire hydrant or the like.

[Brief explanation of drawings]

The drawings show a combination structure of a road cover and a receiving frame according to an embodiment of the present invention, FIG. 1 is a plan view of the square cover and receiving frame in a fitted state, and FIG. 2 is a view taken along line A-A in FIG. 1. 3 is a sectional view taken along line B-B in FIG. 1, FIG. 4 is a sectional view taken along line C-C in FIG. 1, FIG. 5 is an enlarged vertical sectional view of the mating part, and FIG. FIG. 3 is a plan view of the receiving frame alone. DESCRIPTION OF SYMBOLS 1... Square lid, 2... Outer periphery protrusion, 3... Downward protrusion, 4... Opening, 5... Inner periphery flange, 6...
Receiving frame, 7...Tapered raised portion, 8...Road sign mark, 9...Light reflective material, 10...Handle for opening/closing the lid, 11...Vertical hole, 12...Nut for retaining, 13... ... Colored concrete, 14 ... Underground objects, 15 ... Road surface, 16, 17 ... Anti-slip uneven pattern.

Claims (1)

[Claims for Utility Model Registration] (1) A square lid 1 having a downward protrusion 3 on the inner lower surface of an outer circumferential protrusion 2, and a square opening 4 into which the downward protrusion 3 is fitted. and a receiving frame 6 having an inner circumferential flange 5 on which the outer circumferential protrusion 2 is placed protruding from the inner circumferential surface of the opening 4, and a receiving frame 6 protruding from the inner circumferential flange 5 on the inner circumferential flange 5. Several tapered protuberances 7 are protruded symmetrically and gradually widened, and the outer peripheral surface 3a of the downward protrusion 3 is formed into a slope that matches the inclination angle of the tapered protrusion 7. A combination structure of a road lid and a receiving frame, characterized in that the outer circumferential surface 3a of No. 3 is brought into close contact with the tapered raised portion 7. (2) The combination structure of a road cover and a receiving frame as set forth in claim 1 of the utility model registration claim, characterized in that a road sign mark 8 is engraved on the top surface of the cover 1. (3) The combination structure of a road cover and a receiving frame according to claim 1 of the utility model registration, characterized in that the road sign mark 8 is displayed by a light-reflective material or a fluorescent material 9. (4) The combination of a road cover and a receiving frame according to claim 1 of the utility model registration claim, characterized in that the upper surface of the outer peripheral part of the receiving frame 6 is aesthetically decorated with a light-reflective material or a fluorescent material 9. structure.