JPH0126813Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is not only lightweight and easy to handle, easy to select width and thickness, and low manufacturing cost, but also a hollow plate material with excellent appearance, corrosion resistance, and cushioning properties. The purpose is to provide hollow materials such as hollow pillar materials.

In order to achieve the above object, the present invention arranges a plurality of square pipes 1, 1... in parallel, and abuts the walls 1a, 1a of the adjacent square pipes 1, 1, and A synthetic resin layer 4 is coated on the surface of a hollow core material formed by integrating the square pipes 1, 1, .

In the embodiment shown in FIGS. 1 and 2, a plurality of square pipe metal materials 1, 1... are arranged side by side in the horizontal direction, and wall portions 1 of adjacent square pipe metal materials 1, 1...
a, 1a are brought into contact with each other and joined by welding 3 within the upper and lower corner opposing recesses 2, 2 of the adjacent square pipe metal materials 1, 1, thereby forming these square pipe metal materials 1, 1...
As shown in FIG. 2, the outer surface of a flat hollow core material (see FIG. 1) formed by integrating the above is coated with a synthetic resin layer 4. Both sides of the hollow core material are square pipe metal materials 1 located on both sides,
1 is formed by the outer surface of the non-abutting wall portion 1b. As the square pipe metal materials 1, 1..., steel pipes, aluminum pipes, light alloy pipes, etc. can be used, and synthetic resin-coated metal pipes in which one or both of the inner and outer surfaces of the metal pipe are coated with synthetic resin may be used. You can also use

As shown in Fig. 1, the welding 3 is performed continuously over the entire length of the corner facing recesses 2, 2, and flush with the surface of the hollow core material, so that the hollow core material has a smooth surface without any unevenness. As a result of being able to obtain the core material, it is possible to avoid local thinning of the thickness of the synthetic resin layer 4, and the layer thickness can be easily made uniform. In addition, in some cases, the above-mentioned welding 3
It is also possible to apply this intermittently so that the synthetic resin layer 4 partially bites into the corner facing recess 2.

The hollow plate material constructed as described above becomes a product plate material with excellent appearance, corrosion resistance, and cushioning properties as it is, and can be sold and used. Furthermore, by setting a wire mesh within the synthetic resin layer 4 on the surface of the hollow core material having the above structure, the synthetic resin layer 4 can be prevented from peeling from the surface of the hollow core material due to its elasticity. In addition, the rigidity of the hollow plate material can be improved by reinforcing the integrity of the hollow core material. Furthermore, in order to prevent corrosion inside the hollow plate material having the above structure and to provide cushioning properties to the pipe ends, the square pipe metal material 1,
It is preferable that a synthetic resin cap material is fitted onto both ends of 1 to seal both ends.

In the embodiment shown in FIG. 3, square pipe materials (square pipes) 1, 1... These square pipe materials 1,
1... are arranged side by side in the horizontal direction and are integrated by welding 3 within the upper and lower corner corresponding recesses 2, 2 of the adjacent square pipe materials 1, 1 to obtain a hollow core material as an intermediate material of the hollow plate material. It is something that

The present invention can be configured in various ways other than those shown in the above embodiments.

For example, in the above embodiment, a metal material was used as the square pipe constituting the hollow core material, but a synthetic resin material may also be used. Furthermore, although welding was used as a means of integrating the square pipes, other known techniques such as adhesion may be used. Further, in the above embodiment, the square pipes are arranged side by side in the horizontal direction to constitute the flat hollow core material, but the square pipes may also be overlapped in the vertical direction to constitute the columnar hollow core material.

Thus, according to the present invention, the volume of the hollow space to be closed relative to the entire hollow material is large and lightweight, making it easy and convenient to handle, and the synthetic resin layer on the surface of the hollow core material improves aesthetics, corrosion resistance, and
A hollow material with excellent cushioning properties can be provided. Moreover, by appropriately selecting the cross-sectional shape and number of square pipes installed in parallel in the vertical and horizontal directions, it is possible to freely set the width and thickness of hollow pillar materials of various cross-sectional shapes and dimensions. can accurately meet the various needs of people. Furthermore, since the hollow material of the present invention uses an inexpensively available square pipe or C-shaped cross-section material as the material for the hollow core material, manufacturing costs can be kept low. Note that if a square pipe metal material is used for the hollow core material, the strength of the hollow material can be further increased.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the hollow core material, FIG. 2 is a cross-sectional view of the hollow core material, and FIG. 3 is a cross-sectional view of the hollow core material of another embodiment. It is a diagram. 1... Square pipe, 1a... Wall portion, 2... Corner opposing recess, 4... Synthetic resin layer.

Claims (1)

[Scope of utility model registration request] A hollow core made by arranging a plurality of square pipes in parallel, abutting the walls of adjacent square pipes, and joining these square pipes in the opposing corner recesses of the adjacent square pipes to integrate these square pipes. A hollow material whose surface is coated with a synthetic resin layer.