JPH0228018Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a high-strength, plate-shaped wood that is free from warping, deformation, cracking, and splitting.

Warping and deformation that occurs due to contraction and expansion of wood veneers and laminated wood boards due to humidity and temperature changes will eventually cause these wood veneers and laminated wood boards to crack or split, so they cannot be used for construction or furniture. Alternatively, when a single wood board or a laminated wood board is used as a surface material for packaging boxes, etc., this becomes a fatal defect. Therefore, decorative boards such as particleboards, hardboards, or other core materials with extremely thin decorative materials such as veneer adhered to the surface, and thin wood veneers or laminated wood boards bonded together, such as plywood, have been created. As a result, plate materials that are free from warping, cracking, or tearing, have high strength, and are relatively inexpensive are being provided.

However, such plywood has the disadvantage that it swells when wet with water, and the bonded surfaces tend to peel off, resulting in poor water resistance. Furthermore, many plywood sheets had problems with weather resistance due to the nature of the adhesive, and some plywood sheets also suffered from peeling of the bonded surfaces during long-term use.

This invention was developed in consideration of the fact that conventional plywood could not be used in areas that use water such as washrooms and kitchens, or in areas exposed to direct sunlight. The purpose is to provide wood.

The structure of the reinforced wood according to the present invention that achieves this purpose consists of a wood board with groove-shaped engagement grooves formed on the surface in a direction intersecting the direction of the fibers, and a cross-sectional shape corresponding to the engagement grooves. and a rod-shaped reinforcing wood that is fitted and locked in this engagement groove.

Hereinafter, an embodiment in which the reinforced wood according to the present invention is applied to a laminated wood board will be described in detail with reference to FIGS. 1 and 2. One surface of the laminated wood board 1, which is made by gluing together rectangular rod-shaped pieces of wood to form a plate, has a plurality of dovetail grooves 2 at equal intervals extending in a direction perpendicular to the direction of the fibers (wood grain). Each dovetail groove 2 has a corresponding dovetail groove 2.
A reinforcing wood 3 having a bar shape with a cross-sectional shape corresponding to that is fitted and locked. In this case, it is desirable to apply adhesive to the bonding surface between the laminated wood board 1 and the reinforcing wood 3, thereby eliminating the possibility that the reinforcing wood 3 will come off from the laminated wood board 1. . Furthermore, in this embodiment, a fiber-reinforced synthetic resin sheet 4 that is flush with the surface of the laminated wood board 1 is attached to the surface of the reinforcing wood 3, so that the laminated wood sheet 4 along the longitudinal direction of the reinforcing wood 3 The repulsive force (rigidity) of the reinforcing wood 3 against warping of the wood board 1 is increased. This fiber-reinforced synthetic resin sheet 4 can also be interposed at the joint surface between the laminated wood board 1 and the reinforcing wood 3.

Therefore, the reinforcing wood 3 acts as a beam against the warpage of the laminated wood board 1, but since they are fitted and locked so that they do not come off, the reinforcement is stronger than the stress caused by the warp of the laminated wood board 1. By setting the straight rigidity of the wood 3 to be high, no warpage occurs in the laminated wood board 1 along the longitudinal direction of the reinforcing wood 3.

In addition, in this example, laminated wood board 1 is used as the wood board.
However, a normal wood veneer may be used, or the reinforcing wood 3 may be attached to both sides of the wood board. In addition, in this embodiment, the dovetail groove 2
was used as the engagement groove, but from the laminated wood board 1 to the reinforced wood 3
Any type of engagement groove may be used as long as it has a shape that allows the reinforcing wood 3 to fit and lock therein so as not to separate.

In this way, according to the reinforced wood of the present invention, the reinforcing wood is fitted and locked into the engagement groove formed on the surface of the wood board in the direction intersecting the fibers of the wood board, so that the wood board can be separated from the reinforcing wood. A wood board that does not warp to the point of peeling and has excellent water resistance and weather resistance can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the reinforced wood according to the present invention in the middle of manufacturing, and Fig. 2 is a perspective view showing a part of the reinforced wood in an enlarged manner. There is a groove, 3 is reinforced wood,
4 is a fiber reinforced synthetic resin sheet.

Claims (1)

[Claims for Utility Model Registration] (1) A wood board having groove-like engagement grooves formed on its surface in a direction intersecting the fiber direction, and having a cross-sectional shape corresponding to the engagement grooves; Reinforced wood consisting of a rod-shaped reinforcing wood that is fitted and locked into an engagement groove. (2) The reinforced wood according to claim 1 of the utility model registration claim, characterized in that a fiber-reinforced synthetic resin sheet is attached to at least one plane parallel to the longitudinal direction of the surface of the reinforced wood.