JPH0460057A - Sound insulating wooden floor material - Google Patents

Abstract

PURPOSE:To improve the sound insulating property and dissolve the problem on nailing by providing the first grooves on the lower face of a lower wooden plate, providing the second grooves on the lower face of a nailing wooden plate below it respectively, and connecting buffer members with different materials. CONSTITUTION:The first grooves 6 are cut to reach an intermediate buffer member 1c on the lower face of a lower wooden plate 1b inserted with the intermediate buffer member 1c between upper and lower split decorative wooden plates la, lb. The second grooves 7 with the shallow depth to the level not impairing the strength are formed in the longitudinal and lateral directions on the whole lower face of a nailing wooden plate 4 connected below it. An upper buffer member 5a made of vinyl fibers and a lower buffer member 5b irregularly molded with a natural rubber foam body are provided below it, and excellent sound insulating effect from a low sound area to an intermediate sound area is exerted. The sound isolating property can be further improved, and the problem on nailing can be dissolved.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a sound-insulating wooden flooring material.

In this specification, "sound insulation" refers to floor impact sound insulation performance.

2. Description of the Related Art Conventionally, as shown in FIG. 3, sound-insulating wooden flooring materials have been provided with a decorative wood board (+1) and a horizontal nailing part (12) and an adjacent part on the lower surface of the decorative wood board (11). A nailed wooden perforated board (14) arranged so as to form a wooden board nailing part accommodating part (13), and a buffer member (15) joined to the lower surface of the nailed wooden perforated board (14). More is known.

Problems to be Solved by the Invention In the above-mentioned conventional sound-insulating wooden flooring materials, a perforated board is used as the nailed wooden board, so while this can achieve a sound insulation effect by reducing the spring constant, it is difficult to use for nailing. It is excellent in that it has both the required strength and pressure resistance that prevents it from sinking when a load is applied.

However, when installing a large number of the above wooden flooring materials horizontally and sequentially connecting them to the floor base, a perforated wooden board (
14) Adhesive is applied to the surface of the nailing part (12) using a spatula, trowel, etc., but the adhesive inevitably gets into the hole (16) that exists in the nailing part (12). . As a result, adhesion failure occurs, and after installation, there is a difference in level between adjacent wooden flooring materials, a stepping phenomenon occurs, and the adhesive gets stuck in the holes, resulting in waste of adhesive.

The purpose of this invention is to eliminate the use of perforated plates and enable reliable adhesion, thereby preventing the above-mentioned unevenness and stomping and eliminating waste of adhesive. To provide a sound insulating wooden flooring material which can prevent partial sinking when a dew condensation member is arranged on the floor and also exhibits an excellent sound insulating effect.

Means for Solving the Problems In order to achieve the above object, the sound insulating flooring material according to the present invention includes a decorative wood board, and a horizontal nailing part and an adjacent wood board nailing part housing part on the lower surface of the decorative wood board. It consists of nailed wooden boards that are joined together to form a wall and a buffer member placed on the underside of the nailed wooden boards. Parallel first grooves are provided, and parallel second grooves are formed on the entire lower surface of the nailed wooden board with a shallow depth that does not impair the required strength of the nailed wooden board. , both grooves exist in one direction or in two directions that intersect with each other.

As a specific example of the material of the decorative wood board, plywood is generally used, but other materials such as particle board, hardboard, and medium-density fiberboard can also be mentioned, and the surface of the board is appropriately decorated. This decoration is usually done by pasting precious wood veneer, sawn board, pattern sheet, synthetic resin sheet, cork, etc. on the surface, or by painting. The decorative wood board may be divided into a plurality of upper and lower parts, with a relatively thin buffer member interposed between the divided wood boards, and these parts may be integrally joined. In this case, the first groove is formed by cutting from the lower surface of the lower wooden board after joining until it reaches the lower surface of the intervening buffer member;
Although it does not reach the bottom surface, it may have a depth close to this.

The groove width is 2.0 to 6. OI, groove pitch is 20-5011f
fl is appropriate. Decorative wood boards are usually rectangular, but the two opposing sides can also have an appropriate shape, such as a stepped shape or a hexagonal shape when viewed from the plane, and the surrounding area is
The decorative wood boards are processed to perform tongue-and-groove, interlocking, and other known joining methods, and the thickness of the decorative wood board is between 6°0 and 15°.
．． 0 mm is common.

Specific examples of intervening cushioning members for decorative wood boards include polyethylene, polypropylene, polyurethane, polystyrene,
Examples include foams of synthetic resins such as vinyl chloride, and foams of about 20 to 30 times the size of other natural rubbers or rubber-based resins such as SBR, butyl rubber, and nitrile rubber.

The same material as the decorative wood board is used for the nailed wood board. If the second groove is provided in only one direction,
The direction is preferably perpendicular to the first groove. Groove depth is 0.3 to 5.0 III111 full width is 5.0 to 10.01
II11, groove depth 3 times or more, groove pitch 20-5C1
+m is appropriate. There are three factors that determine the required strength of a nailed wood board: impact strength during nailing, nail retention strength, and shear strength of the joint.

The buffer member may be a single piece or two pieces joined together, but the latter is preferred. In this case, as the material for the upper cushioning member, vinyl fiber or polyester fiber nonwoven fabric with a basis weight of about 1100 g/m2 is usually used, but other fibrous cushioning materials such as felt, paper, and woven fabric can also be used. The thickness of the upper buffer member is 1.0~3.0II
lr5 is suitable. As the material for the lower cushioning member, it is preferable to use natural rubber or a foam material that is about 20 to 30 times stronger than synthetic rubber such as SBR, butyl rubber, or nitrile rubber, and to have uneven undulations on both the top and bottom surfaces. Flat ones are also used. Note that the buffer member is normally used by joining it to the lower surface of the nailed wood board, but when using a buffer member with a large area, it may be laid on the subfloor in advance.

The reason why the upper and lower buffer members are made of different materials as described above is that the former material has a poor sound insulation effect when the center frequency of the octave band is 125 Hz or less.
It is effective between 250 and 500 Hz, and the latter material is exactly the opposite, so by combining the two,
This is because an excellent sound insulation effect can be obtained with respect to the definition of the bass range and the middle range. Moreover, it has good pressure resistance, meaning that the floor material does not sink even when a load is applied for a long period of time. The appropriate thickness of the entire buffer member is 5 to 15 m+n.

Function The sound-insulating wooden flooring material according to the present invention has the above-mentioned structure, and since no porous wooden board is used, the nailing part is flat, so there is no adhesion failure, and the adhesive There is no room for problems due to poor coating.

In addition, instead of using a perforated board, parallel first grooves having a depth of approximately half the thickness of the decorative wood board are provided on the entire bottom surface of the decorative wood board, and the nailed wood board is provided with parallel first grooves on the entire bottom surface of the decorative wood board. Parallel second grooves are formed with a shallow depth that does not impair the required strength of the wooden board, and both grooves exist in one direction or in two directions that intersect with each other, so that the sound insulation properties are improved. There are no problems with nailing.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The illustrated sound-insulating wood flooring material includes a decorative wood board (1) and a horizontal nailing part (2) and an adjacent wood board nailing part accommodating part (3) formed on the lower surface of the decorative wood board (1). It consists of a nailed wooden board (4) that is joined like this, and a buffer member (5) placed on the lower surface of the nailed wooden board, and the entire lower surface of the decorative wooden board (1) is covered with almost the same thickness. Parallel first grooves (6) each having a half depth are provided in both front and rear and left and right directions, and
Parallel second grooves (7) are formed on the entire lower surface of the nailed wood board (4) in both front and rear and left and right directions, and have a shallow depth that does not impair the required strength of the nailed wood board (4). It is something that

The decorative wood board (1) is divided into upper and lower parts to form an upper wood board (l
A relatively thin intermediate buffer member (lc) is interposed between a) and the lower wooden board (1b), and the three are integrally joined. The first full-length (6) is the lower wooden board after joining (1b
) is formed by cutting from the lower surface of the intermediate buffer member (1c) until it reaches the lower surface of the intermediate buffer member (1c), and the groove depth is 2.5 mm, the groove width is 3.0 mm, and the groove pitch is 25 mm. . Decorative wood board (1) is square and its four sides are processed to perform tongue and groove. Upper wood board (1)
1a) and the lower wooden board (lb) both have a thickness of 2゜5.
ffial plywood is used for the intermediate buffer member (1c) with a thickness of 1
A polyolefin foam expanded 30 times at a temperature of 5° is used.

A medium-density fiberboard with a thickness of 3.0 mm is used for the nailed wood board (4), and the groove width of the second groove (7) is 8°0mm, the groove depth is 1.0 mm, and the groove pitch is is 30mm.

The buffer member (5) is joined to the lower surface of the nailed wood board (4), and is connected to the upper buffer member (5a) and the lower buffer member (5a).
5b). The upper cushioning member (5a) is made of vinyl fiber nonwoven fabric with a thickness of 3.0 mm and a basis weight of 110011 g/m2, and the lower cushioning member (5b
) is made of a natural rubber foam that has a thickness of 5 and is expanded 30 times at Onv, and is corrugated on both the top and bottom surfaces.

The sound-insulating wooden flooring material of this example showed a sound-insulating performance of -45 in a light impact load test.

Effects of the Invention According to the sound-insulating wooden flooring material of the present invention, since the nailing portions are flat, no adhesive is required in the holes unlike in conventional perforated boards. As a result, there is no adhesion failure, and therefore, there is no difference in level between adjacent wooden flooring materials after installation, there is no treading phenomenon, and of course there is no wastage of adhesive.

On the other hand, instead of using a perforated board, the entire lower surface of the decorative wood board is covered with parallel first holes with a depth that is approximately half the thickness of the decorative wood board.
In addition to the grooves, parallel second grooves are formed on the entire lower surface of the nailed wooden board with a shallow depth that does not impair the required strength of the nailed wooden board, and both grooves are flush with each other. Because they exist in one direction or two directions that intersect with each other,
Demonstrates even better sound insulation than when using a perforated plate.

As mentioned above, the second groove has a shallow depth that does not impair the required strength of the nailed wood board, so there are no problems with the shear strength of the joint, nail retention strength, and impact resistance during nailing. do not have.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 show an embodiment of this invention.
Figure 1 is an enlarged sectional view, Figure 2 is a partially cutaway bottom view,
FIG. 3 is a sectional view of a conventional example corresponding to FIG. 1. (1)...Decorative wood board, (2)...Horizontal nailing part, (
3)...adjacent wood board nailing part storage part, (4)...nailing water quality board, (5)...buffer member, (6)...first groove,
(7)...Second groove. that's all

Claims (1)

[Claims] A decorative wood board (1) and a nailed wood board joined to form a horizontal nailing part (2) and an adjacent wood board nailing part accommodating part (3) on the lower surface of the decorative wood board (1). It consists of a board (4) and a buffer member (5) arranged on the lower surface of the nailed wood board (4), and has a depth that is approximately half the thickness of the decorative wood board (1) over the entire lower surface. Parallel first grooves (6) are provided, and parallel grooves having a shallow depth that does not impair the required strength of the nailed wood board (4) are provided on the entire lower surface of the nailed wood board (4). Two grooves (7) are formed, both grooves (6)
(7) is a sound-insulating wooden flooring material that exists in one direction or in two directions that intersect with each other.