JPH03125744A - Laminated wood made of regular trigonal pyramid plywood - Google Patents

Abstract

PURPOSE:To obtain a laminated wood having high reliability in safety and being manufacturable in easy execution by placing regular trigonal pyramid plywoods made by combining regular trigonal pyramid bodies at their ridgelines, with the surfaces thereof placed facing each other, and by placing windows opened on the surfaces thereof on positions corresponding with each other with flanges thereof made provided with bonding means. CONSTITUTION:An upward-facing regular trigonal pyramid body and a downward-facing regular trigonal pyramid body are bonded together at ridgelines thereof and a regular trigonal pyramid plywood is constructed therewith. The two of the regular trigonal pyramid plywoods are then positioned so that the surfaces thereof are placed facing each other with windows A opened on the surfaces thereof positioned corresponding with each other. An adhesive is applied to flanges 42 provided to the edges of the windows A, and the flanges are pasted together with rivets driven in, and the bonding is completed after hardening of the adhesive. The regular trigonal pyramid body forming the plywood may be constructed by folding a single sheet of a plate material.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to substrates for roofs, walls and floors of large buildings, which require a significant reduction in weight.

[Prior art] Plywood made of internal pressure tetrahedrons of regular triangular pyramids is disclosed in U.S. Pat.
Fig1 of 986241 (May30.1961)
4 and Fig. 15. When thin aluminum sheets are used as the material, the plywood is lightweight and has high strength and rigidity, and is effective as a base material for roofs, walls, and floors of large buildings.

[Problems to be Solved by the Invention] This type of plywood can be easily joined vertically and horizontally, but there is no example of overlapping and joining, which limits its uses.

[Means for Solving the Problems] The present invention is characterized in that the surfaces of the plywood are faced to each other, the window opening on the surface is aligned, and a means is provided for joining to the edge of the window.

[Example] To explain this invention with reference to drawings, FIG. 1 is a perspective view of the above-mentioned known example of regular tetrahedral plywood, and the regular tetrahedron is
It is constructed by gluing together three members 39 shown in 15, and a window A opening on the surface is surrounded by a flange 42. When stacking and joining the plywood boards, position the windows A so that their surfaces face each other, apply adhesive to the flange 42, rivet the flange 42, and wait for the adhesive to harden before joining. Complete. In addition to thin aluminum plates, fiber boards and other materials may be used as the material, and fiber packing impregnated with an adhesive may be used to bond the flanges.

U Effects of the invention: Since the window A on the front side of the plywood and the window B on the back side are in communication, jigs and materials can be taken in and out for adhesive bonding at the flange 42, so construction and inspection are easy and safe. A laminated material with high properties can be obtained. Although three members 39 were used to construct the regular tetrahedron, the manufacturing efficiency of the plywood can be improved by folding one plate to form 11 regular triangular pyramids.

[Brief explanation of the drawing]

FIG. 1 is a copy of the explanatory diagram of the above-mentioned known example, and FIG. 2 is an explanatory diagram of the present invention. 39 is a thin aluminum plate constituting a regular tetrahedron or a regular triangular pyramid; 42 is a flange of member 39;
50 is a fiber packing impregnated with an adhesive; 51 is a rivet for joining the flange 42; A is a window that opens on the surface of the regular triangular pyramid plywood; and B is a window that opens on the back surface of the regular triangular pyramid plywood.

Claims (1)

[Claims] 1. In stacking and joining regular triangular pyramid plywood formed by joining upward and downward regular triangular pyramids at the ridge line, the surfaces of the plywood are faced to each other, and the windows opening on the surfaces are made to coincide with each other. A laminated material of regular triangular pyramidal plywood, characterized by positioning and applying a bonding means to the edge of the window. 2. A laminate of regular triangular pyramidal plywood according to claim 1, wherein the regular triangular pyramid constituting the plywood is made of a single plate material.