JP2605046Y2 - Joint structure of soundproof flooring - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof flooring material which is directly adhered to a floor base such as mortar or plywood.

[0002]

2. Description of the Related Art In order to improve the sound insulation performance of floor materials, there has been disclosed a method of fixing a cushioning material over the entire length of a side end of a floor base material as a method of closing a joint between adjacent floor materials (utility model). Publication of the application Showa 52-4442
4).

[0003]

In general, a floor material has a concave shape on one side surface and a convex shape on the opposite side surface in order to fit the fruits of adjacent floor materials. The actual mold is designed as shown in FIG. 1 so that a gap is not formed at an upper portion of the fitting portion in a state where the fruits of the adjacent floor materials are fitted in order to maintain the beauty of the upper surface of the floor material. That is, in a state where the floor material upper surface is fitted without a gap, a gap of generally 0.5 mm to 2 mm is maintained at the lower portion of the fitting portion.

[0004] In the case of a flooring with a cushioning material attached to the back surface for the purpose of soundproofing, a cushioning material slightly smaller than the flooring material dimensions as shown in Fig. 2 is used so that the cushioning material does not protrude into the floor base material. ,
At present, it is affixed by being receded by 2-3 mm from the end of the floor base material, and no consideration is given to the soundproofing of the actual fitting portion between floor materials.

Therefore, in the case of a soundproof flooring material in which a cushioning material is stuck on the back surface, as shown in FIG. 2, the gap at the lower part of the actual fitting portion is further enlarged, and the sound passes through the gap and is stuck. The soundproofing effect of the cushioning material is not exhibited at the joint. Therefore, if the gap is closed so that no gap is formed on the upper surface of the flooring material, the soundproofing effect can be improved.

As a means for solving the above-mentioned problem, there has been disclosed a device in which a cushioning material is fixed along the entire length of the side end portion of the adjacent floor material (Japanese Utility Model Application Publication Showa 5).
2-44424) In the above-mentioned invention, a band-like buffer is fixed over the entire length of the opposite side end of the back surface of the flooring material. In particular, when heat insulation is required, the buffer is adjacent to the buffer. Then, a heat insulating material is stuck or formed on the back surface of the floor material.

Therefore, according to the above-mentioned invention, in order to obtain a sound-insulating flooring material having the same sound-proofing performance as that of the present invention, first, a heat-insulating material having a soundproofing property is applied to the entire back surface of the flooring material except for the side edges, and A separate straight cushioning material is required over the entire length of the end, requiring a separate step to apply the cushioning material each time, resulting in an increase in flooring manufacturing costs. The present invention solves the above problems and provides a flooring material having excellent soundproofing performance at a low cost.

[0008]

The present invention will be described in detail with reference to the following embodiments. However, the present invention is not limited by the following embodiments.

The present invention comprises a wooden floor substrate and a cushioning material as shown in FIG. Wood floor substrate is wood, plywood, fiberboard,
A plate-like base material such as LVL (a board material in which a plurality of wooden veneers are laminated and adhered with the fiber direction of the veneer aligned in a fixed direction) and a veneer attached to the surface of the plate-like base material, and makeup such as painting is applied. Wood floor base materials used for general construction such as applied floor materials can be used. The cushioning material is a sheet-like material having elasticity, such as a foamed resin sheet, a nonwoven fabric, a rubber mat, and cork, and having a restoring force against a pressing force from above.

[0010] In order to fill the gap in the vicinity of the actual back surface in FIG. 2, a cushioning material is fitted to the back surface of the floor material, and as shown in FIG. In the contact state, a cushioning material having a width slightly larger than the width of the floor base material may be stuck so that the opposing cushioning materials on the back surface of the floor material contact each other without any gap. That is, it is sufficient that the width is wide by the gap width D below the actual fitting portion in FIG.

When the cushioning material is applied, as shown in FIG. 3, if both sides protrude substantially equally so that the cushioning materials come into contact with each other in the gap below the fitting portion, the protruding length can be reduced. When a cushioning material is attached as shown in FIG. 3, the cross section after the construction is as shown in FIG .

In the above, the structure of the seam portion in one direction in the longitudinal direction or short direction of the flooring material has been described. However, if there is a real type seam in both directions, the above-mentioned solution should be applied to both directions. Is natural.

When the cushioning material is made of a material which is easily contracted and deformed by a pressing force from the horizontal direction at the time of actual fitting, the width of the cushioning material is equal to the width of the back surface of the floor base material. It may be slightly larger than the total width with the gap width D at the lower part of the joint.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an actual floor material.

FIG. 2 is a cross-sectional view of the actual seam structure of the conventional soundproof flooring material.

FIG. 3 is a cross-sectional view of the joint structure of the soundproof flooring according to the present invention.

FIG. 4 is a cross-sectional view showing a joint structure when the fruits of the soundproof floor material of FIG. 3 are fitted to each other.

[Explanation of symbols]

 A Floor material B Buffer material D Gap width at lower part of actual fitting part

Claims (2)

(57) [Scope of request for utility model registration] 1. A floor material having concave and convex fitting nuts on the side surfaces, wherein the width of the back surface is smaller than the width of the back surface of the floor base material at the lower portion of the actual fitting portion between the floor materials. Only wide cushioning material
The sound-insulating floor material has a joint structure that is substantially equally protruded from both side ends of the floor base material and is adhered in parallel to the back surface of the floor material. 2. The width of the cushioning material is actually fitted with the width of the back surface of the floor substrate.
Than the total width of the gap between the floor substrates in the lower part
The joint structure for a soundproof flooring according to claim 1 , wherein the joint structure is made of a material that is slightly larger and can be easily contracted in a horizontal direction.