JPH06246856A - Rigid board - Google Patents

Abstract

PURPOSE:To provide a rigid board which is light in weight and is free from isotropy. CONSTITUTION:The board is of such constitution that it is a rigid board having a laminated structure which is comprised by sticking flat plates to both the sides of a core material 3 and corrugated plates 3a possessing a plurality of corrugated corrugation ribs 5which are in parallel with each other and the summit parts of the corrugation ribs 5 each positioning vertically at the foregoing core material 3 are formed into a plane surface and a beam member 4 extending in the direction meeting at right angles with an extending direction of the corrugation ribs 5 are arranged alternately as the core material 3 of the rigid board 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid board suitable for constructing structures such as aircraft, missiles, vehicles, ships, buildings and the like.

[0002]

2. Description of the Related Art Conventionally, as a plate material for constructing a structure such as a vehicle, a corrugated plate having a plurality of corrugation ribs in parallel with each other is used as a core material, and both surfaces thereof are sandwiched by flat plates to form a surface material. Rigid board is used. Such a rigid board has an advantage that it is lightweight and has high rigidity.

[0003]

However, in the conventional rigid board as described above, the rigidity in the direction orthogonal to the rib is significantly lower than the rigidity in the extending direction of the rib formed on the corrugated plate. There is a problem of being anisotropic. The present invention has been made in view of the above points, and an object thereof is to provide a rigid board that is lightweight and has no anisotropy.

[0004]

SUMMARY OF THE INVENTION The present invention is a rigid board having a laminated structure in which flat plates are fixed to both surfaces of a core material as surface materials, and the core material has corrugation ribs having a plurality of corrugations parallel to each other. In addition, the corrugated plate in which the tops of the ribs located above and below the core material are formed by planes and the beam material extending in the direction orthogonal to the extending direction of the corrugation ribs are alternately arranged. I am trying.

[0005]

According to the present invention, as a core material of a rigid board having a laminated structure in which flat plates are fixed as surface materials on both sides of the core material, each core board has a plurality of corrugation ribs having corrugations parallel to each other and located above and below the core material. Since the corrugated plate in which the top of the rib is formed of a flat surface and the beam material extending in the direction orthogonal to the extending direction of the corrugation rib are alternately arranged,
In the rigid board, the corrugation ribs of the corrugated plate and the beam member extend in directions orthogonal to each other.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 shows a rigid board 1 according to the present invention. The rigid board 1 has a laminated structure in which corrugated plates 3a, 3a, ... And beam members 4, 4, ... As core materials 3 are sandwiched and fixed between flat plates 2 and 2 which are surface materials.

As shown in FIG. 2, the corrugated plate 3a is a flat plate on which corrugation ribs 5 having a trapezoidal cross section are formed in parallel at equal intervals. This corrugation rib 5
As shown in FIG. 1, each of the upper and lower top portions 5a has a flat portion to form a contact surface with the flat plate 2. Here, corrugation ribs 5, 5, formed on each corrugated plate 3a
It is desirable in terms of rigidity that the ... Is formed at a pitch P such that the width W of the corrugated plate 3a is three times or more the pitch P of the corrugation ribs 5.

The beam member 4 is made of, for example, a hollow aluminum extruded member having a rectangular cross section as shown in FIG. 3 (a), and the upper and lower top portions 5 of corrugation ribs 5 formed on the corrugated plate 3a.
It has the same height H as the height H between a and 5a.

As shown in FIG. 2, the rigid board 1 includes:
The corrugated plate 3a and the beam member 4 are alternately arranged at predetermined intervals so that the extending direction of the corrugation ribs 5 formed on the corrugated plate 3a and the extending direction of the beam member 4 are orthogonal to each other. It is arranged. Here, it is desirable that at least two beam members 4 are arranged on one rigid board.

In the rigid board 1 having the above structure, the flat plate 2, the corrugated plate 3a and the beam member 4 are made of resin such as aluminum alloy, resin, wood, FRP,
Materials that are suitable for the purpose, such as decorative boards and reinforced paper, are used. As a method of fixing the flat plate 2 to the corrugated plate 3a and the beam member 4, an adhesive, welding, brazing, rivet, or the like is used in order to firmly fix the flat plate 2 to the corrugated plate 3a and the beam member 4. .

After the rigid board 1 is completed, it is cut or molded into a desired shape for use.

As described above, in the rigid board 1 having the above structure, the corrugation ribs 5 having a plurality of corrugations parallel to each other are provided as the core material 3 of the rigid board 1.
Moreover, since the corrugated plate 3a in which the tops of the corrugation ribs 5 are formed into a flat surface and the beam members 4 extending in the direction orthogonal to the extending direction of the corrugation ribs 5 are alternately arranged, the rigid board 1 has: The corrugation ribs 5 of the corrugated plate 3a and the beam members 4 extend in the directions orthogonal to each other. Therefore, the corrugation ribs 5 of the corrugated plate 3a and the beam member 4 act as reinforcing members, respectively, so that it is possible to obtain the rigid board 1 having high rigidity and light weight with no anisotropy in rigidity.

In the above embodiment, the corrugation rib 5 formed on each corrugated plate 3a has a trapezoidal shape in cross section, but in order to fix the corrugation rib 5 to the flat plate 2, a flat portion is formed on the top portion 5a of the corrugation rib 5. 4, the shape of the side wall portion 5b of the corrugation rib 5 is sinusoidal (FIG. 4A) or rectangular (FIG. 4A).
(B)), a curve (FIGS. 4 (c), (d)), etc. may be used. In addition, the top portion 5 a of the corrugation rib 5 and the side wall portion 5
You may attach R to the boundary part with b. Further, a hole (not shown) may be formed in the top portion 5a of the corrugation rib 5 to reduce the weight, or a rib (not shown) may be provided in the side wall portion 5b to improve the strength. Furthermore, if the height H of the beam member 4 is the same as the height H of the corrugation ribs 5 formed on the corrugated plate 3a in the up-down direction, for example, as shown in FIGS. As shown, the shape may be solid, such as rectangular in cross section, I-shaped, or C-shaped.

[0014]

As described above, according to the rigid board of the present invention, as a core material of a rigid board having a laminated structure in which flat plates are fixed to both surfaces of the core material as surface materials, a plurality of corrugated waves parallel to each other are used. Since the corrugated ribs having corrugation ribs and the tops of the ribs located above and below the core member are formed in a flat plane, and the beam members extending in the direction orthogonal to the extending direction of the corrugation ribs are alternately arranged. In the rigid board, the corrugation ribs of the corrugated plate and the beam member extend in directions orthogonal to each other. Therefore, the corrugation rib and the beam member of these corrugated plates act as reinforcing members, respectively, so that it is possible to obtain a rigid board having high rigidity and light weight with no anisotropy in rigidity.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a rigid board according to the present invention.

FIG. 2 is a plan view showing an arrangement of corrugated plates of the rigid board.

FIG. 3 is a front sectional view showing the shape of a beam member of the rigid board.

FIG. 4 is a front cross-sectional view showing the shape of corrugation ribs formed on a corrugated plate of the rigid board.

[Explanation of symbols]

 1 Rigid board 2 Flat plate 3 Core material 3a Corrugated plate 4 Beam material 5 Corrugation rib 5a Top part

Claims (1)

[Claims] 1. A rigid board having a laminated structure in which flat plates are fixed to both surfaces of a core material as surface materials, the core material having a plurality of corrugation ribs in parallel with each other and positioned above and below the core material. A rigid board, characterized in that corrugated plates each having a top portion formed with a flat surface and beam members extending in a direction orthogonal to the extending direction of the corrugation ribs are alternately arranged.