JP3260014B2 - Tunnel interior plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel interior plate attached to a side wall of a tunnel such as a road.

[0002]

2. Description of the Related Art Conventionally, as a metal tunnel interior plate,
For example, as shown in FIG. 5, both side edges of the rectangular interior board main body 5 are folded back at an angle of 180 degrees along the length direction thereof, and the folded portion 6 is brought into surface contact with the back surface of the interior board main body 5. Some are flat. Also, as shown in FIG. 6, both side edges of the rectangular interior board main body 5 are positioned on the front side along the length direction.
In some cases, the folded portion 6 is folded at an angle of 0 degrees, and the folded portion 6 is curved in a convex shape so that a gap is formed between the folded portion 6 and the back surface of the interior board body 5.

[0003]

However, in the former case shown in FIG. 5, since the entire interior plate is formed in a flat plate shape, the surface can be easily painted at the time of manufacturing, and the surface is cleaned after being attached to the tunnel. It is easy to remove, but has the disadvantage of low rigidity. Due to the low rigidity, when the interior board is attached to the tunnel side wall via the base rim, the interior panel is pulled by the mounting part and is significantly affected by the base rim, which easily causes torsion and the like and along the tunnel side wall. It is difficult to bend neatly, and there is a problem that the beauty is spoiled.

In the latter case shown in FIG. 6, the folded portion is curved in a convex shape and a gap is formed between the folded portion and the back surface of the interior plate body. When installed through the inner wall, the interior plate tends to return to the original flat plate and does not easily bend along the side wall of the tunnel. In addition, since the folded portion is located on the front side and is curved, dust and dirt accumulate in the folded portion when cleaning the surface after being attached to the tunnel, so that there is a problem that it is difficult to clean.

[0005] It is an object of the present invention to provide a tunnel interior board which solves the conventional problems.

[0006]

In order to solve the above-mentioned problems, the present inventor has found, as a result of various tests and studies, that a curved interior can be neatly mounted by imparting appropriate rigidity to a tunnel interior plate, and the present invention has been completed. Things.
That is, the tunnel interior plate of the present invention is a metal-made rectangular tunnel interior plate that is curved and attached along the side wall of the tunnel, and both side edges of the interior plate body are folded back along the length direction thereof, The folded portion is brought into surface contact with the back surface of the interior board body to provide a bent edge, and the bent edge is folded along the length direction to the front side or the back side of the interior board body.
It is bent at the width of the turned back portion and is positioned obliquely outward with respect to the interior board main body.

[0007]

With a suitable rigidity, when it is attached to the tunnel side wall via the base rim, it is not twisted and curved substantially along the tunnel side wall, resulting in a smooth curved surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, A is a tunnel interior plate of the present invention, for example, a metal plate such as a stainless steel plate is used as a substrate, and its surface is coated with an inorganic material. Good. The tunnel interior plate A is generally formed in a vertically long rectangular shape, and is attached by being curved vertically along the side wall of the tunnel 4 as shown in FIG.

In the tunnel interior board A, both side edges of the vertically long rectangular interior board body 1 are arranged on the back side along the length direction.
The folded portion 2 is folded at an angle of 0 degrees, and the folded portion 2 is in surface contact with the back surface of the interior board body 1 to provide a bent edge portion 3.
As shown in FIG. 2 or FIG. 3, the bent edge portion 3 is bent to the front side or the back side of the interior board main body 1 along its length direction, and is positioned obliquely outward with respect to the interior board main body 1. In addition, the width of the bent edge portion 3, in other words, the width of the folded portion 2 is generally 5 to 5.
It is about 10 mm.

The bent edge portion 3 is bent to the front side or the back side of the interior plate main body 1 and is positioned obliquely outward with respect to the interior plate main body 1. The bending angle α with respect to may be an acute angle as shown in FIG. 2 and FIG. 3, and it is sufficient to provide the interior plate body 1 with appropriate rigidity and not to hinder the bending of the interior board body 1. Is generally 45 degrees or less, especially 5 to 3
When the angle is set to 0 degree, the optimum rigidity can be imparted to the interior board main body 1 and the interior board main body 1 can be neatly curved, which is preferable.

The tunnel interior plate A of the present invention is attached to a plurality of base hulls (not shown) attached laterally to the side wall of the tunnel 4, and is bent at the width of the folded portion. Appropriate rigidity is exerted by the bent edge portion 3 thus formed, and the curved edge portion 3 is curved substantially along the tunnel side wall.

[0012]

As described above in detail, in the tunnel interior board of the present invention, the folded portions at both side edges are brought into surface contact with the back surface of the interior board body to provide a bent edge, and the bent edge is provided on the front side of the interior board body. Or it is bent at the width of the folded part on the back side and is positioned diagonally outward with respect to the interior panel body, so it has appropriate rigidity and can prevent twisting etc. of the interior panel, and when it is attached to the tunnel side wall, It can be neatly curved substantially along the side wall, and does not impair the aesthetic appearance unlike the related art. In addition, it is easy to clean the product after it has been installed on the surface or in a tunnel during manufacturing.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing one embodiment of a tunnel interior board of the present invention.

FIG. 2 is a partially cutaway cross-sectional view of the tunnel interior plate of FIG. 1;

FIG. 3 is a partially cutaway cross-sectional view showing another embodiment of the tunnel interior board of the present invention.

FIG. 4 is a sectional view showing a tunnel to which a tunnel interior plate is attached.

FIG. 5 is a partially cutaway cross-sectional view showing an example of a conventional tunnel interior plate.

FIG. 6 is a partially cutaway cross-sectional view showing another example of a conventional tunnel interior plate.

[Explanation of symbols]

 A Tunnel interior board 1 Interior board body 2 Folded part 3 Bent edge 4 Tunnel

Claims (1)

(57) [Claims] 1. A metal-made rectangular tunnel interior board which is attached by being curved along a side wall of a tunnel, both side edges of the interior board body are folded back along the length direction thereof, and the folded portion is formed. A bent edge portion is provided in surface contact with the back surface of the interior plate body, and the bent edge portion is bent at the width of the folded portion on the front side or the back side of the interior plate body along its length direction and is inclined with respect to the interior plate body. Tunnel interior plate located outside.