JPH108694A - Floor board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of a push-up phenomenon of floor board laid in a dwelling house or a multiple dwelling house and made to abut against each other, when the floor boards absorb moistures. SOLUTION: This floor board is formed with back side grooves 1 and a surface side groove 2, of which the bottom surface is located below the bottom surface of the grooves 1 as view in a cross-sectional view. With this arrangement in which the grooves 1 and the groove 2 are overlapped with each other as view in a cross-sectional view, a thicknesswise expansion due to absorption of moisture can be absorbed by the grooves 1 or the groove 2, and as a result, a push-up phenomenon caused by the abutments between the floor boards due to the moisture absorption can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floorboard for a mat used in a detached house, an apartment house or the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A floor plate 13 of this type, in which a veneer plate 12 is stretched on the surface of, is awarded. The floor plate 13 has narrow grooves 14 arranged on the back surface. The narrow grooves 14 are formed for the purpose of facilitating the elastic deformation of the floor plate 13 and facilitating the adaptation of the floor plate 13 to a floor substrate such as a slab, and enhancing soundproofing.

[0003]

However, the above-mentioned conventional one has a property that it easily expands when it absorbs moisture, moisture and the like.

[0004] At the butted portions laid side by side, a push-up phenomenon is liable to occur.

[0005] As described above, the bottom side of the floor plate 13 has the narrow grooves 14 arranged side by side and can absorb the elongation, whereas the front side has no such thing and cannot absorb the elongation. It was largely due to that.

SUMMARY OF THE INVENTION The present invention is intended to eliminate the above-mentioned drawbacks, and is intended to prevent a swelling phenomenon of a floor board which is butt-connected and which is made of wood or the like and which contains water.

[0007]

The gist of the present invention is that a back groove 1 is provided and a front groove 2 is provided, and the bottom of the front groove 2 is located below the bottom of the back groove 1 in the front-back direction. A floor material characterized by being formed as described above.

As described above, since the back groove 1 and the front groove 2 overlap in the front and back directions, the back groove 1 or the front groove 2 absorbs the elongation due to moisture absorption over the entire length in the front and back directions. As a result, the floor materials are prevented from being pushed up due to elongation due to moisture absorption.

It is preferable that the groove directions of the back groove 1 and the front groove 2 coincide with each other so that the elongation in the same direction can be absorbed equally between the front and back surfaces.

Further, in this case, when the front groove 2 is provided at the bottom of the decorative groove 5 provided on the surface, the front groove 2 is inconspicuous, and the decorative groove 5 has an increased depth.

Here, as the basic structure of the flooring material, a structure in which a veneer plate 4 is stretched on the surface of the plywood 3 is often used.

Further, the veneer plate 4 is provided on the surface of the plywood 3 and the soundproof sheet 6 is provided on the back surface of the plywood 3, which has a high sound insulation effect.

[0013]

Embodiments of the present invention will be described with reference to the drawings.

One embodiment of the present invention is shown in FIGS. As shown in FIG. 1, the basic structure of this flooring is plywood 3
A wooden veneer 4 is attached to the surface of the substrate to form a substrate, and the substrate is provided with a back groove 1 and a front groove 2 so that the bottom of the front groove 2 is located below the bottom of the back groove 1 in the front-back direction. Further, a soundproof sheet 6 which is a vinyl chloride sheet mixed with barium sulfate is provided on the back surface of the plywood 3.

Since the soundproof sheet 6 is stretched, the sound insulating effect of the floor material is enhanced. A large number of back grooves 1 are provided side by side, and have an effect of facilitating elastic deformation of the substrate, facilitating adaptation to a floor substrate such as a slab in construction, and an effect of improving soundproofing.

On the protruding plate 4, a decorative groove 5 is provided as a shallow concave groove to enhance the decorative effect. This makeup groove 5
Is provided for the purpose of making it appear as if a plurality of veneers 4 are stretched on the plywood 3.

The front groove 2 is provided at the bottom of the decorative groove 5. As a result, the surface groove 2 is not noticeable, and the decorative groove 5
The depth is increasing. The groove directions of the back groove 1 and the front groove 2 match.

As described above, since the back groove 1 and the front groove 2 overlap in the front and back direction, the back groove 1 extends in parallel with the surface due to moisture absorption over the entire length in the front and back direction.
Or, the front groove 2 absorbs. As a result, the floor materials are prevented from being pushed up due to elongation due to moisture absorption.

Further, since the groove directions of the back groove 1 and the front groove 2 are the same, the elongation in the same direction can be absorbed equally between the front and back.

[0020]

According to the flooring material of the present invention, since the back groove 1 and the front groove 2 overlap in the front and back directions, the back surface stretches parallel to the surface due to moisture absorption over the entire length in the front and back directions. The groove 1 or the front groove 2 absorbs. As a result, the floor materials are prevented from being pushed up due to elongation due to moisture absorption.

In this case, if the front groove 2 is provided at the bottom of the decorative groove 5 provided on the surface, the front groove 2 is inconspicuous,
Can be expected to increase the depth and enhance the design.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a perspective view showing a conventional technique.

[Description of Signs] 1 Back groove 2 Front groove 3 Plywood 4 Veneer plate 5 Decorative groove 6 Soundproof sheet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B27M 3/04 B27M 3/04

Claims (4)

[Claims] 1. A flooring material comprising a back groove 1 and a front groove 2 provided so that the bottom of the front groove 2 is located below the bottom of the back groove 1 in the front-to-back direction. . 2. A flooring material comprising: a front groove 2 provided at a bottom of a decorative groove 5 provided on a surface. 3. The flooring material according to claim 1, wherein a veneer plate 4 is formed on a surface of the plywood 3. 4. The flooring material according to claim 3, wherein a veneer plate 4 is provided on the surface of the plywood 3, and a soundproof sheet 6 is provided on the back surface of the plywood 3.