JPH0543159Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention is a soundproof flooring material in which a decorative board is laminated on the upper surface of a wooden substrate via a soft sheet layer, and a cushion material layer is laminated and integrated on the lower surface of the same wooden substrate. It is related to.

[Background technology]

Conventionally, as shown in FIG. 1, a decorative board 3 is laminated on the upper surface of a wooden substrate 1 with a soft sheet layer 2 interposed therebetween.
A soundproof flooring material in which a cushion material layer 4 is laminated and integrated on the lower surface of the same wooden substrate 1 is known. In this soundproof flooring material, it is expected that the soft sheet layer 2 blocks propagated sound and the cushion material layer 4 provides vibration isolation, thereby providing a double soundproofing effect. However, in the conventional example, the propagated sound that has passed through the soft sheet layer 2 and reached the wooden substrate 1 is diffused throughout the wooden substrate 1, and the propagated sound moves downward over a large area. The impact applied to the wooden substrate 1 is also received by the entire wooden substrate 1, and the resulting vibrations spread throughout the entire wooden substrate 1, which causes the entire wooden substrate 1 with high rigidity to vibrate due to the impact and generate noise. Decorative board 3 and wood substrate 1 laminated above and below 2
Warping was likely to occur due to the difference in expansion and contraction ratio between the two.

[Purpose of invention]

The present invention has been devised in view of the above-mentioned background art, and its purpose is to provide a soundproof flooring material that suppresses the generation of vibration noise due to impact and is resistant to warping.

[Disclosure of invention]

Hereinafter, the present invention will be explained based on the drawings.

The soundproof flooring material shown in FIG. 2 is an embodiment of the present invention, in which a decorative board 3 is laminated on the upper surface of a wooden substrate 1 via a soft sheet layer 2, and a cushion material layer 4 is laminated on the lower surface of the wooden substrate 1. In the soundproof floor material made of integrated lamination, a large number of grooves 5 are carved on the lower surface of the wooden substrate 1,
Felt 1 in which the depth of the grooves 5 approximately matches the thickness of the wooden substrate 1, and the fibers are oriented in the vertical direction.
A soft resin sheet 12 is provided on the peripheral edge of the sheet 1 to form a soft sheet layer 2.

The wooden substrate 1 is made of plywood 6. The soft sheet layer 2 includes a felt 11 formed by needle punching so that the fibers are oriented in the vertical direction;
It is formed of a soft resin sheet 12 provided on the peripheral edge portion of the felt 11.

In this case, felt 1 with fibers in the vertical direction
1 has strong stiffness in the vertical direction, but low bending rigidity.

The soft resin sheet 12 is a soft sound insulating sheet made by mixing a sound insulating material such as barium sulfate or lead powder into a soft synthetic resin, and is designed to prevent the decorative board 3 from interfering with the actual processing so as not to interfere with the actual processing. It is provided on the peripheral edge of the felt 11 to prevent it from sinking. That is, although it is difficult to cut the edges of the felt 11, the soft resin sheet 12 can be actually processed by cutting relatively easily together with the wooden substrate 1, and the felt 11 is also made of fibers. Although the direction is vertical, the vertical direction is stronger than the horizontal direction, but in the peripheral area, in order to prevent the occurrence of steps due to sinking between adjacent flooring materials, A more reliable sinking prevention function is obtained by the same soft resin sheet 12.

The decorative board 3 is formed by laminating and integrating a wooden decorative veneer 7 on the surface of a plywood 6. The cushion material layer 4 is formed of a soft synthetic rubber foam whose lower surface has been processed into a profile shape to provide irregularities. The depth dimension of the groove 5 is approximately matched to the thickness dimension of the wooden substrate 1 to such an extent that a thin skin of 1 mm or less remains at the bottom thereof.

The soundproof flooring material has a wooden substrate 1 at its peripheral edge which is machined to have a convex part 8 and a concave part 9, which are placed side by side on a base surface 10 such as concrete or mortar. The convex part 8 and the concave part 9 are engaged with each other and connected, and fixed by adhesive, nailing, metal fittings, etc.

Therefore, in this embodiment, the propagated sound that has passed through the soft sheet layer 2 and reached the wooden substrate 1 is not diffused throughout the wooden substrate 1, but is separated at the grooves 5 and transmitted to the grooves 5. It only moves downward in a small area separated by
The impact applied to the decorative board 3 also affects the grooves 5 of the wooden board 1.
The vibrations are received only in the areas separated by the impact, and the resulting vibrations do not spread to the entire area.In other words, since the rigidity of the wooden substrate 1 is small and the vibrations do not spread to the entire area, the vibrations due to the impact The generation of sound can be suppressed to a low level.

Further, in this embodiment, the expansion and contraction of the wooden substrate 1 is absorbed by the grooves 5, and the fiber direction of the felt 11 of the soft sheet layer 2 is in the vertical direction. Since there is almost no expansion or contraction in the horizontal direction, the entire flooring material is unlikely to warp.

Further, in this case, since the soft resin sheet 12 is provided at the peripheral edge of the felt 11 where the fibers are in the vertical direction to form the soft sheet layer 2, there is no problem with actual processing. This prevents the decorative board 3 from sinking in the peripheral portion.
That is, although it is difficult to cut the edges of the felt 11, the soft resin sheet 12 can be actually processed by cutting relatively easily together with the wooden substrate 1, and the felt 11 is also made of fibers. Although the direction is vertical, the vertical direction is stronger than the horizontal direction, but in the peripheral area, in order to prevent the occurrence of steps due to sinking between adjacent flooring materials, A more reliable sinking prevention function is obtained by the same soft resin sheet 12.

In the present invention, the decorative board 3 may be formed of a single plate, the cushion material layer 4 may be formed of a soft synthetic resin foam, and the grooves 5 may be
The bottom part may be carved until it reaches the soft sheet layer 2.

Further, in the present invention, the wooden substrate 1 is made of plywood, particle board, etc., and its thickness is 5 mm.
It is about 15mm from The grooves 5 carved on the lower surface of the wooden substrate 1 have a width of about 1 mm to 3 mm, and a depth that substantially matches the thickness of the wooden substrate 1. In addition, the decorative board 3 is oak,
Use a laminated board of wood decorative veneer 7 with a thickness of about 0.2 mm to 0.5 mm and plywood 6 with a thickness of about 3 mm to 7 mm, which are created by slicing, rotary cutting, etc. from logs such as cherry trees. is preferable, but
Of course, the decorative board 3 of other configurations and materials may be used. In addition, the soft sheet layer 2 has a thickness dimension of the felt 11 and the soft resin sheet 12 of 1.
It is about 5 mm to 5 mm. The cushion material layer 4 is made of soft synthetic resin foam such as polyethylene foam, polyurethane foam, polyethylene butyl alcohol foam, soft synthetic rubber foam, natural rubber, etc., and its thickness ranges from 7 mm to 7 mm. It is about 15mm.

There are various ways to carve the grooves 5 as shown in Figure 3, where a is the width direction of the soundproof flooring, b is the lengthwise direction of the soundproof flooring, c is a combination of a and b, and d is the width direction of the soundproof flooring material.
is the addition of the diagonal direction to c, etc.

[Effect of idea]

As mentioned above, in the soundproof flooring material of the present invention, a large number of grooves are carved on the lower surface of the wooden substrate, and the depth of the grooves approximately matches the thickness of the wooden substrate. The rigidity of the board is reduced, and the impact is separated in the grooves, making it difficult for the entire floor to vibrate as a whole, and the generation of vibration noise due to impact can be suppressed. It is partially absorbed and the fiber direction of the felt of the soft sheet layer is in the vertical direction, and the soft sheet layer hardly experiences horizontal expansion and contraction, so the entire flooring material is unlikely to warp.
Further, in this case, since a soft resin sheet is provided on the peripheral edge of the felt where the fibers are oriented in the vertical direction to form a soft sheet layer, sinking of the decorative board is effectively prevented.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional example of the present invention, Fig. 2 is a cross-sectional view showing an embodiment of the present invention, Fig. 3 a,
b, c, and d are schematic explanatory diagrams illustrating how to carve grooves in the present invention. In the figure, 1 is a wooden substrate, 2 is a soft sheet layer, 3 is a decorative board, 4 is a cushion material layer, 5 is a groove, 6 is plywood, 7 is a wooden decorative veneer, 8 is a convex part,
9 is a concave part, 10 is a base surface, 11 is a felt, 1
2 is a soft resin sheet.

Claims (1)

[Scope of utility model registration request] A soundproof flooring material in which a decorative board is laminated on the upper surface of a wooden substrate via a soft sheet layer, and a cushion material layer is laminated and integrated on the lower surface of the same wooden substrate. A soundproof flooring material in which the depth of the grooves substantially matches the thickness of the wooden substrate, and a soft resin sheet is provided at the peripheral edge of the felt where the fibers are vertically arranged to form a soft sheet layer.