JPH06246855A - Rigid board - Google Patents

Abstract

(57) [Summary] [Purpose] An object is to provide a rigid board that is lightweight and has no anisotropy. [Structure] A rigid board 1 having a laminated structure in which flat plates 2 and 2 are fixed to both surfaces of a core material 3 as surface materials, and as the core material 3, corrugation ribs 4 having a plurality of corrugations parallel to each other are provided.
4, a plurality of corrugation ribs 4 of upper and lower corrugation ribs 4 each having a flat top portion 4a are formed in a plane, and the corrugation ribs 4 of adjacent corrugation plates 3a extend in directions orthogonal to each other. As described above, it is arranged to be in contact with each other.

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 constituting a structure such as a vehicle, a rigid board having a laminated structure in which both surfaces of a corrugated plate having a plurality of corrugation ribs having a corrugation parallel to each other are sandwiched between flat plates has been 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]

The invention according to claim 1 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 includes a plurality of corrugation ribs having corrugations parallel to each other, and the tops of the ribs located above and below are flat surfaces. It is characterized in that a plurality of corrugated sheets formed in (4) are arranged in contact with each other such that the extending directions of the ribs of adjacent corrugated sheets are orthogonal to each other.

According to a second aspect of the present invention, in the rigid board according to the first aspect, the corrugated sheet has a rectangular shape in a plan view, and at least one of the four sides of the corrugated sheet is adjacent to another corrugated sheet. It is characterized in that it is the same as the length of the contacting side.

[0006]

According to the first aspect 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, the core material has corrugation ribs having a plurality of corrugations that are parallel to each other, and is positioned vertically. Since the plurality of corrugated sheets in which the tops of the respective ribs are formed in a flat surface are arranged so that the extending directions of the ribs of the adjacent corrugated sheets are orthogonal to each other,
In the rigid board, the corrugation ribs of the corrugated plate extend in two directions orthogonal to each other.

According to the second aspect of the present invention, the corrugated sheet has a rectangular shape in a plan view, and at least one of the four sides has a length equal to the length of the adjacent side of another corrugated sheet. A plurality of corrugated sheets are regularly arranged.

[0008]

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 the core material 3 is sandwiched between the flat plates 2 and 2. The core material 3 is formed by arranging a plurality of corrugated plates 3a, 3a, ... Which are rectangular in a plan view, and each corrugated plate 3a is configured as follows.

That is, the corrugated plate 3a is formed by forming corrugation ribs 4 having a trapezoidal cross-section on a flat plate in parallel at equal intervals. The corrugation rib 4 has a flat portion on its top portion 4a. A contact surface with the flat plate 2 is formed. Here, the corrugation ribs 4, 4, ... Formed on each corrugated plate 3a may be 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 4. , Desirable for rigidity.

As shown in FIG. 2, corrugated plates 3a, 3a, ... Are formed on the core member 3 so that the extending directions of corrugation ribs 4 formed on the adjacent corrugated plates 3a, 3a are orthogonal to each other. It is laid out and is composed. At this time, the length of each side around each corrugated plate 3a is the same as the length of the side in contact with another adjacent corrugated plate 3a, and the corrugated plates 3a, 3
a, ... are along the directions orthogonal to each other in the same plane,
Each is regularly arranged at equal intervals.

In the rigid board 1 having the above-described structure, the flat plate 2 and the corrugated plate 3a are made of metal such as aluminum alloy, resin, wood, FRP, decorative board, reinforced paper, and other materials suitable for the purpose. Is used. Further, as a method of fixing the flat plate 2 and the corrugated plate 3a, adhesive, welding, brazing, rivet, etc. are used to surely fix the flat plate 2 and the top portion 4a of the corrugation rib 4 formed on the corrugated plate 3a. To use.

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 corrugated plates 3a, 3a, ... Are arranged so that the extending directions of the corrugation ribs 4 of the adjacent corrugated plates 3a are orthogonal to each other. Since they are arranged, the corrugation ribs 4 extend in the rigid board 1 in two directions orthogonal to each other. Therefore, these corrugation ribs 4 act as a reinforcing material, and it is possible to obtain the rigid board 1 having high rigidity and light weight with no anisotropy in rigidity.

Further, since the length of each side of each corrugated plate 3a is the same as the length of the side in contact with another adjacent corrugated plate 3a, the corrugated plates 3a, 3a, ... Are arranged regularly. The rigidity of the rigid board 1 can be made uniform, and at the time of manufacturing the rigid board 1, the corrugated plates 3a, 3a, ... Are easily arranged and assembled.

In the above embodiment, the rigid board 1 is used.
Although an example of arranging the corrugated sheet 3a on the corrugated sheet is shown, the present invention is not limited to this example, and at least one side out of the four sides of each corrugated sheet 3a may have the same length as another corrugated sheet adjacent thereto. Figure 3
It may be arranged as shown in FIG. However, it is desirable in terms of rigidity that the rigid board be provided with two or more corrugated plates in each direction. Further, although the corrugation ribs 4 formed on each corrugated plate 3a have a trapezoidal shape in cross section, if the corrugation ribs 4 have a flat portion on the top 4a for fixing to the flat plate 2, for example, 4, the shape of the side wall portion 4b of the corrugation rib 4 is sinusoidal (see FIG.
(A)), rectangular wave (Fig. 4 (b)), curve (Fig. 4)
(C), (d)) or the like may be used. Further, R may be attached to the boundary portion between the top portion 4a of the corrugation rib 4 and the side wall portion 4b. Furthermore, the top 4 of the corrugation rib 4
A hole (not shown) may be formed in a to reduce the weight, or a rib (not shown) may be provided in the side wall portion 4b to improve the strength.

[0016]

As described above, according to the rigid board of the first aspect, a plurality of corrugated waveforms parallel to each other are used as a core material of a rigid board having a laminated structure in which flat plates are fixed as surface materials on both surfaces of the core material. Corrugation ribs, and the plurality of corrugations in which the tops of the ribs located above and below are formed in a plane are arranged so that the extending directions of the ribs of adjacent corrugations are orthogonal to each other. In the rigid board, corrugation ribs of the corrugated sheet extend in two directions orthogonal to each other. Therefore, these corrugation ribs act as a reinforcing material, and it is possible to obtain a rigid board having high rigidity and light weight, which has no anisotropy in its rigidity.

According to the rigid board of the second aspect, since the length of each side of each corrugated sheet is the same as the length of the side in contact with another adjacent corrugated sheet, the rigidity of the rigid board is uniform. It is possible to obtain the effect that the corrugated sheet can be easily arranged and assembled even when the rigid board is manufactured.

[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 plan view showing another arrangement example of corrugated plates 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 Corrugation rib 4a Top part

Claims (2)

[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, and the core material has a plurality of corrugated corrugation ribs that are parallel to each other and are positioned above and below each other. A rigid board, characterized in that a plurality of corrugated plates each having a flat top portion of a rib are arranged in contact with each other such that the extending directions of the ribs of adjacent corrugated plates are orthogonal to each other. 2. The rigid board according to claim 1, wherein the corrugated plate has a rectangular shape in a plan view, and at least one of the four sides of the corrugated plate has a length that is the same as the length of the adjacent side of another corrugated plate. A rigid board characterized by being.