JPH0347068Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Technical Field] This invention relates to a flooring material having a soundproofing effect. [Background Art] Floors of buildings made of steel frames, reinforcing bars, etc. are often made by laying floor finishing materials such as wooden tiles, synthetic resin tiles, rubber tiles, etc. on a floor base made of concrete or the like. Using wooden tiles as a floor finishing material has the advantage of making rooms etc. calmer and adding a sense of luxury to buildings, but wooden tiles have poor sound absorbing properties, so they are less likely to be affected by the sound of footsteps. There are some disadvantages, such as the fact that it resonates. On the other hand, synthetic resin tiles and rubber tiles have higher sound absorption properties than wooden tiles, so using them as floor finishing materials has the advantage of reducing the sound of footsteps; A disadvantage is that it is difficult to give a sense of luxury. Therefore, a soundproof flooring material as shown in Figure 1 was developed. This soundproof flooring material 1 is a wooden piece 1
b are adhered to the surface of the sheet 1a made of sound-absorbing material so that they are laid out in a checkered pattern or the like without any gaps. Thickness 3.0-8.0mm as wood piece 1b
The sheet 1a has a thickness of 2.0 mm.
A certain degree is used. When such soundproof flooring material 1 is laid and fixed on the floor base as shown in the figure, the upper surface of the wooden piece 1b constitutes the floor surface, making the room etc. calmer.
It can also give a sense of luxury to a building. Moreover, on the back side of the wooden piece 1b is a sheet 1 made of sound absorbing material.
Since a is provided, a soundproofing effect can also be obtained. However, such soundproofing flooring materials have low soundproofing effects, the wooden pieces easily peel off from the sheet, and the wooden pieces have large dimensional changes due to humidity, etc., so the expansion and contraction of the wooden pieces causes the phenomenon of the wooden pieces pushing up. There were also problems such as the appearance of gaps in the floor surface, which spoiled the aesthetic appearance of the floor surface. [Purpose of the invention] This invention was made in view of the above circumstances, and consists of a sheet and a wooden piece. The purpose of the present invention is to provide a soundproof flooring material that does not cause the phenomenon of pushing up of wooden pieces or impair the aesthetic appearance of the floor surface even when the wood pieces expand and contract. [Disclosure of the invention] In order to achieve the above-mentioned object, this invention has a sheet made of a sound-absorbing material, in which a predetermined number of wooden pieces are embedded in a sheet made of a sound-absorbing material, spaced apart from each other, and with the front side protruding. The wooden piece and sheet are soundproofing flooring materials in which a plurality of dovetail grooves and dovetail tenons provided on the back surface of the wooden piece and the surface of the sheet are interlocked with each other and are fixed inseparably. The gist of this is flooring. This invention will be explained in detail below based on the drawings. FIGS. 2 and 3 show the soundproof flooring material according to this invention. As shown in the figure, this soundproof flooring material 2 has a predetermined number of wooden pieces 2b embedded in a sheet 2a made of a sound-absorbing material, spaced apart from each other and with the front side protruding. . A dovetail groove 7 provided on the back surface of the wooden piece 2b so as to extend to both ends thereof and a dovetail tenon 8 provided at a position where the wooden piece is embedded in the sheet 2a are engaged with each other. The wooden piece 2b and the sheet 2a are integrally bonded to each other by adhesive or the like, that is, they are fixed inseparably. As the sound absorbing material, for example, soft rubber such as silicone rubber, soft plastics, and others are used. When using soft rubber or soft plastic, it is preferable to use one with a hardness (shore hardness) of 10 to 70°. The wooden piece may be a single piece, but plywood or a substrate made of plywood joined to an artificial decorative veneer or a natural decorative veneer may be used. As for the wood pieces, it is recommended to use reinforced wood (WPC), which is impregnated with monomers and then chemically polymerized using radiation or catalysts to strengthen them with resin. preferable. This is because properties such as strength, dimensional stability, weather resistance, and corrosion resistance of the wood piece are improved. The thickness of the sheet is preferably 3.0 to 20.0 mm, considering the sound absorption effect, the feeling of walking, and the ability to absorb some irregularities in the flooring, and the thickness of the wooden piece is preferably 5 to 20 mm. preferable. Furthermore, it is preferable that the intervals between the wooden pieces be 0.5 mm or more. The size of the sheet and the wooden pieces, and the number of wooden pieces to be joined to the sheet are determined as appropriate depending on the installation location, etc. The number and shape of dovetail grooves or dovetail tenons, the amount of protrusion of wooden pieces, etc. are also determined as appropriate. For example, the sheet is 180cm x 180cm
square, 20mm thick, and the size of the wooden piece is
Make a 10cm x 10cm square, leaving 1cm between the wooden pieces. Also, the depth a of the dovetail groove (see Figure 3) is 2.0 to 3.0 mm, the angle b between both ends of the dovetail ceiling and the side wall is 55 to 65 degrees (preferably 60 degrees), and the width c of the dovetail ceiling is 5 mm. The protrusion amount d of the wooden piece from the top surface of the sheet is 3 to 7 mm (preferably 5 mm). In the soundproof flooring material according to this invention, intervals are provided between the wooden pieces, and the bases of the wooden pieces are embedded in the sheet, so that as shown in FIG. Sound A, such as the sound of walking, passing through the wooden piece 2b is blocked by the sound absorbing material surrounding the wooden piece 2b, making it difficult for it to be transmitted to the adjacent wooden piece 2b. Therefore, compared to a soundproof flooring material in which wooden pieces are spread tightly over the sheet surface, sound is less likely to be transmitted laterally, and in addition, the back side of the wooden pieces has unevenness due to multiple dovetail grooves. For this reason, the sound absorption effect is extremely high. Even if the dimensions of the wooden pieces change, the sheet portion between the wooden pieces expands and contracts to absorb the dimensional change of the wooden pieces, so that the wooden pieces do not push up and no gaps are created between the wooden pieces and the sheet.
Further, since there is initially a gap between the wooden pieces that serves as a joint, even if the wooden pieces change in size, this gap absorbs the dimensional change and the aesthetic appearance of the floor is not impaired. Since the wooden pieces are joined to the sheet by the interlocking of the dovetail grooves and dovetail tenons, they are less likely to come off from the sheet than if they were simply glued to the surface of the sheet or embedded in the sheet. By appropriately determining the spacing and protruding height of the wooden pieces, it is possible to eliminate problems such as those caused by people tripping on the edges of the wooden pieces, even if the heights of the wooden pieces are slightly different. It is. On the other hand, if there are no gaps between the wooden pieces, such as with conventional soundproof flooring, and the heights of the wooden pieces are different, there is a risk of trouble occurring when a person trips on the protruding parts of the wooden pieces. There are many. The soundproof flooring material according to this invention does not require nailing and can be fixed to the subfloor with adhesive, so it is easy to install. However, it may be fixed to the subfloor by nailing. The soundproof flooring material according to this invention is produced by, for example, pouring liquid sound-absorbing material into a mold, then embedding a predetermined number of wooden pieces at intervals and with the front side protruding, and then hardening the sound-absorbing material. It can be made by A large number of wooden pieces may be arranged in a predetermined manner by fitting the front sides of the wooden pieces into a mold, and the sound absorbing material may be poured into the back side of the wooden pieces and allowed to harden. Instead of pouring the sound-absorbing material into a mold, it may be poured directly onto the subfloor, and the wood pieces may be placed over it. As shown in FIG. 4, this invention provides a wooden piece 3 in which a substrate 3a made of plywood or the like and a decorative veneer 3b having a butthole pattern reinforced with resin are joined and integrated. When used in the soundproof flooring material 4, a wood grain pattern can be placed on the floor surface. In the figure, 3c is a dovetail groove, 5 is a sheet, and 5a is a dovetail tenon. When wood is cut into rings to create wood pieces with a butt end pattern, the wood fibers are cut into short pieces, making them very susceptible to cracking, chipping, warping, etc. when dried. If the thickness is about 1.0 to 10.0 mm, it will be so thin that cracks will easily occur. Therefore, it is difficult to use such wood pieces for the soundproof flooring material according to this invention.
However, as mentioned above, when decorative veneer with a wood grain pattern is reinforced with resin, it may crack, chip, or warp.
Since it is less likely to cause scratches and has good water resistance, it can be used as a soundproof flooring material. For example, the wooden piece can be made as follows. First, veneers are made by cutting hardwoods such as oak, oak, sedge, and lauan, softwoods such as pine, ash, fir, and cypress, and other logs and square lumber into rounds. Thickness is 1.0~10.0mm
It is preferable that Next, the veneer is impregnated with a thermosetting resin such as polyester resin, melamine resin, phenol resin, etc. by vacuum pressure impregnation. The amount of impregnation is preferably 100 to 120%. After that, the veneer is adhered to a substrate such as plywood, and the impregnated resin is cured. After adhering the veneer to the substrate, it may be integrally molded with the sound absorbing material and the impregnated resin may be cured. It is preferable to use plywood as the substrate. This is because plywood usually has rough conduits, which improves the bonding (adhesion) of the wooden piece to the sound absorbing material. In the embodiment described above, the square wooden pieces are arranged parallel to the sheet, but this need not necessarily be the case. As shown in FIG. 5, rectangular wooden pieces 6 may be arranged on the sheet 5, or small chip-shaped wooden pieces may be embedded in the sheet with a part exposed and joined. It is fine if it seems to be integrated. Further, the shape of the dovetail groove is not limited to that shown in FIG. For example, as shown in FIG. 6, the dovetail groove 9a may be curved on both sides. In the figure, 9 is a wooden piece, 10 is a sheet, and 10a is a dovetail tenon. In the embodiment, the wooden piece is provided with a dovetail groove and the sheet is provided with a dovetail tenon, but conversely, the wooden piece may be provided with a dovetail tenon, and the sheet may be provided with a dovetail groove. The dovetail grooves do not necessarily have to be open at both ends of the wood piece, but rather short ones, such as the head of a mushroom.

[Effect of idea]

The soundproof flooring material according to this invention is a soundproofing flooring material in which a predetermined number of wooden pieces are embedded in a sheet made of a sound-absorbing material, spaced apart from each other and with the front side protruding. The sheet is made up of multiple dovetail grooves and dovetail tenons provided on the back side of the wooden piece and the front side of the sheet, which are interlocked with each other and fixed inseparably, so it has a great soundproofing effect, and the wooden piece can be separated from the sheet. In addition to being extremely difficult to peel off, even if the wooden piece expands and contracts, it will not cause the wooden piece to push up or spoil the aesthetic appearance of the floor surface. In particular, in this invention, the wooden piece is fixed to the sound-absorbing material sheet inseparably, so compared to the case where the wooden piece is removably attached to the sound-absorbing material sheet, the wooden piece is less likely to move or float. You can more reliably prevent dripping. This is because when soundproof flooring materials are used for a long period of time, the entire construction surface inevitably shifts or deforms. If the wooden piece and the sound-absorbing material sheet are removable, the wooden piece and the sound-absorbing material sheet can be moved relative to each other, so there may be gaps between the wooden piece and the sound-absorbing material sheet, or individual wood pieces may be separated from the sound-absorbing material sheet. The pieces may move apart, and there is a possibility that the arrangement of the wooden pieces may be misaligned during construction, or some of the wooden pieces may be lifted up. Also,
If there is a gap between the sound absorbing material sheet and the wooden piece,
It is also possible that the soundproofing performance deteriorates or that the wooden pieces rattle, causing more noise. However, if the wooden pieces are fixed inseparably to the sound-absorbing material sheet as in this invention, gaps may occur between the wooden pieces and the sound-absorbing material sheet, or individual wooden pieces may move separately from the sound-absorbing material sheet. You don't have to worry about it slipping or lifting, and it can be used for a long period of time.
A good finish can be maintained. Also,
If the wooden piece and the sound-absorbing material sheet are firmly attached, good soundproofing performance can be achieved, and the wooden piece will not cause noise. Furthermore, this design has an interlocking structure with multiple dovetail grooves and dovetail tenons, and the back side of the wooden piece has complex unevenness due to the multiple dovetail grooves, which reduces walking noise generated on the surface of the soundproof flooring material. , the sound energy is consumed by complex reflections on the uneven parts and interference with each other, and the sound is not transmitted back to the surface of the soundproof flooring material or transmitted to the adjacent wooden pieces. , disappear inside the wooden piece or at the complex uneven interface between the wooden piece and the sound-absorbing material sheet. As a result, the soundproofing performance is much better than, for example, when the back surface of the wooden piece is flat or when the wooden piece and the soundproofing material sheet are fitted together using mere concave and convex portions. Moreover, the wooden piece and the soundproofing material sheet are reliably joined at multiple points in the planar shape through the engagement of the multiple dovetail grooves and dovetail tenons, so that the central part of the wooden piece can be separated from the surface of the soundproofing material sheet. There is no need to worry about it coming out locally. This means that the wooden piece and the soundproofing material sheet are simply joined together with one dovetail groove and dovetail tenon.
At the interface between the wooden piece and the soundproofing material sheet other than the joining point, such as the central part where the bottom surface of the dovetail groove and the top surface of the dovetail tenon face each other, the wooden piece and the soundproofing material sheet simply face each other over a wide range. Because there is only
When external force is applied or expansion and contraction occur over time, there is a possibility that the wooden piece will peel off from the soundproofing material sheet. If the wooden piece and the soundproofing material sheet peel off even locally, the wooden piece will not only lift up and look bad, but also cause a creaking sound when walking on the lifted wooden piece. Problems such as vibration and rattling also occur. However, if the wooden piece and the soundproofing material sheet are joined by multiple dovetail grooves and dovetail tenons as in this invention, only a small amount of the opposing surface between the wooden piece and the soundproofing material sheet will remain, which occurs in the center of the dovetailed groove. Therefore, there is almost no fear that the wooden piece will peel off from the soundproofing material sheet, and all of the above-mentioned problems are solved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional soundproof flooring material laid down, Fig. 2 is a perspective view of one embodiment of the soundproof flooring material according to this invention, and Fig. 3 is a longitudinal section of a part of the same soundproof flooring material. 4 is a partially cutaway perspective view of another embodiment of the soundproof flooring material according to this invention, and FIG. 5 is a plan view of another embodiment of the soundproofing flooring material according to this invention. FIG. 6 is a partial vertical sectional view of another embodiment of the soundproof flooring material according to this invention. 2, 4...Soundproof flooring material, 2a, 5, 10...Sheet, 2b, 3, 6, 9...Wood piece, 3c,
7, 9a...Dovetail groove, 5a, 8, 10a...Dovetail tenon.

Claims (1)

[Claims for Utility Model Registration] (1) Sheets made of sound absorbing material are spaced apart from each other and the front side portions are made to protrude,
A soundproof flooring material in which a predetermined number of wooden pieces are embedded. Soundproof flooring that is permanently fixed. (2) The soundproof flooring material according to claim 1, wherein the wooden piece is a decorative veneer integrally bonded to the surface of a substrate made of plywood. (3) The soundproof flooring material according to claim 2 of the utility model registration claim, wherein the decorative veneer has a wood grain pattern. (4) The soundproof flooring material according to any one of claims 1 to 3 of the utility model registration claim, in which the wood piece is made of reinforced wood. (5) The soundproof flooring material according to any one of claims 1 to 4, wherein the wood piece has a thickness of 5 to 20 mm. (6) The soundproof flooring material according to any one of claims 1 to 5 of the utility model registration claim, in which the interval between the wooden pieces is 0.5 mm or more. (7) The soundproof flooring material according to any one of claims 1 to 6, wherein the sound absorbing material is one of soft rubber and soft plastics. (8) The soundproof flooring material according to any one of claims 1 to 7 of the utility model registration claim, wherein the sheet has a thickness of 3.0 to 20.0 mm.