JP2000273889A - Display member for lid of underground structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display member for a lid of an underground structure consisting of one display member and capable of reducing cost and inserting a leg part into a hole of the lid smoothly. SOLUTION: A display member for a lid of an underground structure is made of a flexible material and consists of a display panel 6 for signs and a leg part 7 which has four slits 10 which are provided at the center on a lower face of the display panel 6 for signs, are cylindrical, and are directed upward from a lower end and in which faces forming both sides of all the slits 10 are parallel mutually, an outside diameter of an intermediate part of a split piece divided by the slit 10 is swollen, outside diameters of a swollen part of two middle split pieces nipped by parallel faces are larger than outside diameters of the swollen part of the split pieces on both sides, upper faces of all the swollen parts 11 form an engaging face with a lower face edge part of a hole of the lid of the underground structure, and an inclined face whose diameter is shrunk downward from a ridge line of the swollen part 11 is formed. The leg part 7 can be inserted and connected in the hole provided in the lid of the underground structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for displaying characters and symbols displayed on a cover for managing entrances and exits (hereinafter referred to as "underground structures") of manholes, underground facilities, underground facilities, and the like.

[0002]

2. Description of the Related Art Conventionally, in order to manage a large number of underground structures installed by local governments in a local area or a large company, a large number of underground structures installed in factories in various locations are required to cover the types, applications, The display is used to distinguish the model and so on. In many cases, plates for displaying numbers, letters, and symbols are fixed with bolts and nuts for this display, but this operation is time-consuming and troublesome.

Therefore, an invention for facilitating the work is disclosed in Japanese Patent Application Laid-Open No. Hei 9-144046. this is,
A retainer that inserts and engages a leg in the hole of the lid, and a coupling shaft with a tip of a display piece that displays characters or numbers bulged in a hemispherical shape is inserted into the hole of the retainer and restrained. It is to let.

[0004]

The display means comprising the holder and the display piece according to the present invention can be mounted simply by inserting the legs and the connecting shaft into the holes, but the operation is easy. Costly.

As shown in FIG. 6, a leg 2 of the holder 1 is formed by dividing a cylindrical member into four parts by four slits 3 at equal intervals upward from the lower end. Is provided with a bulging portion 4 having a diameter larger than the outer diameter of the leg portion 2, but the side surface of each divided piece, that is, the surface of the slit 3 is located radially. Therefore, when the leg 2 is inserted into the hole of the lid, the bulging portion 4 is pushed by the edge of the hole of the lid, and the surfaces of the slits 3 come into contact with each other, so that the outer diameter formed by the four bulging portions 4 is reduced. Although the diameter is reduced, the diameter is not reduced to a correct circle, and as shown in FIG.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display member comprising one display member, which is inexpensive, and in which a leg can be smoothly inserted into a hole of a lid.

[0007]

As a display member for a cover of an underground structure, a display panel of a sign or the like made of a flexible material and a cylindrical plate provided at the center of the lower surface of the display panel of the sign or the like are provided. , Having four slits extending upward from the lower end, the surfaces forming both sides of all the slits are all in a parallel relationship, and the intermediate outer diameter of the divided pieces divided by the slits swells, and the parallel surface The outer diameter of the bulge of the middle two divided pieces sandwiched between is larger than the outer diameter of the bulge of the divided pieces on both sides, and the upper surface of all the bulged parts is the hole of the lid of the underground structure. Forming an engaging surface with the lower surface edge, forming an inclined surface having a diameter reduced downward from the ridge line of the bulging portion, and comprising a leg portion, the leg portion in a hole provided in a lid of an underground structure. It allows insertion and joining.

[0008]

Embodiments of the present invention will be described with reference to the drawings. The display member 5 such as a symbol is formed of a flexible material such as plastic or synthetic rubber. The display member 5 includes a display panel 6 such as a sign and a leg 7 which is inserted into a hole of a lid of the underground structure and engages with the lid.

On the upper surface of the display panel 6, symbols 8 and the like are displayed in relief. It is preferable to provide a rim 9 on the outer peripheral edge of the upper surface of the display panel 6.

The leg 7 has a cylindrical shape and is provided with four slits 10 upward from the lower end to divide the leg 7 into four to form a four-piece. And the surface of the slit 10, ie, all the side surfaces of each divided piece, are in parallel with each other. That is, as apparent from FIG. 3, of the four divided pieces, the divided piece 7a sandwiched by the parallel surfaces and the divided piece 7b face each other, and the slit 10 is placed on both sides thereof to divide the divided piece 7c and the divided piece 7c. The piece 7d faces.

Each of the divided pieces 7a to 7d is provided with a bulging portion 11 in the middle, the upper surface of each bulging portion forms a step with the outer peripheral surface with the leg portion 7, and the bulging portion 11 is directed downward. An inclined surface that reduces the diameter is formed. The bulging portions 11a and 11b of the divided pieces 7a and 7b sandwiched by the parallel planes have bulging outer diameters slightly larger than the outer diameters of the other bulging portions 11c and 11d.

This display member is inserted and engaged in the hole of the lid of the underground structure as follows. That is, when the tip of the leg 7, that is, the tip of each of the divided pieces 7a to 7d is pressed against the hole of the lid,
First, the lower part of the bulging portion 11 is pushed by the edge of the hole, and the slit 10
And the circle formed by the ridge line of the bulging portion becomes smaller. When further pressed, the bulging portions 11a and 1
1b is strongly pressed and the side surfaces of all the slits 10 are parallel surfaces, so that the divided pieces 7a and 7b are separated from the other divided pieces 7c.
And 7d smoothly and smoothly approach each other. As a result, all the bulging portions 11a-b pass through the holes, and are released from being pressed by the edges of the holes of the lid, and each of the divided pieces 7a-7d
Is spread, the upper surface of the bulging portion 11 abuts on the lower edge of the hole of the lid, and the leg portion is restrained and does not come off.

Although the distance between the lower surface of the display panel 6 and the step between the upper surface of the bulging portion 11 corresponds to the thickness of the lid of the underground structure, a slight error occurs in the thickness of the lid during casting of the lid. There is. For this reason, it is preferable to provide a slight radius at the connection portion 12 between the leg portion 7 and the upper surface of the bulging portion 11 because rattling due to an error does not occur.

[0014]

The display member according to the present invention comprises one member, has a simple structure, is easy to handle, and is inexpensive. In particular, the surfaces of the slits are in a parallel relationship, and, among the divided pieces of the divided leg portions, two opposing ones sandwiched between the parallel surfaces have a large diameter of the bulging portion. When the diameter is reduced by being pressed, the diameter is reduced so as to enter between the divided pieces on both sides, so that the bulging portion of the four divided pieces smoothly passes through the hole of the lid smoothly. Also, among the divided pieces of the leg portion that are restrained and engaged, the diameter of the bulging portion of the two divided pieces is larger than the other, so that the upper surface thereof abuts on the lower side edge of the hole of the lid, The legs are more firmly retained.

[Brief description of the drawings]

FIG. 1 is a side view of a display member.

FIG. 2 is a plan view of a display member.

FIG. 3 is a bottom view of the display member.

FIG. 4 is a sectional view of a display member.

FIG. 5 is an explanatory diagram of a reduced diameter state of a bulging portion of a display member.

FIG. 6 is a bottom view of a conventional holder.

FIG. 7 is an explanatory view of a reduced diameter state of a bulging portion of a conventional holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder 2 Leg part 3 Slit 4 Swelling part 5 Display member 6 Display board 7 Leg part 8 Symbol etc. 9 Rim 10 Slit 11 Swelling part 12 Connection part

Claims (1)

[Claims] 1. A display panel of a sign or the like made of a flexible material, and a cylindrical slit provided at the center of the lower surface of the display panel of the sign or the like and having four slits extending upward from a lower end. The surfaces forming both sides of the slit are all in a parallel relationship, the middle outer diameter of the split piece divided by the slit swells, and the outer bulge of the middle two split pieces sandwiched between the parallel faces The diameter is larger than the outer diameter of the bulge of the divided pieces on both sides, and the upper surface of all the bulges forms an engagement surface with the lower surface edge of the hole of the lid of the underground structure, and the bulge Of the lid of the underground structure, comprising a leg formed with an inclined surface having a diameter reduced downward from the ridgeline of the underground structure, the leg being inserted into a hole provided in the lid of the underground structure and being capable of being connected thereto. Display member.