JPH067155Y2 - Wood flooring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a wooden floor material, particularly a wooden floor material having a sound insulation property.

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

Problems to be Solved by Conventional Technology and Invention Conventionally, in high- and medium-rise houses, it has been common to directly attach carpets as floor surface materials to the floor base. However, not only is carpet difficult to maintain,
Since it takes time and labor to replace the carpets, there is a tendency in recent years to replace wood carpets with wood flooring materials directly on the floor base.
However, since the wooden flooring material is significantly inferior in sound insulation property to carpets, it has a drawback of impairing habitability.

To solve this problem, a cushioning member such as foam may be attached to the entire lower surface of the wooden board, and a flooring material having such a structure has already been disclosed in Japanese Utility Model Laid-Open No. 56-3945.

By the way, regarding sound insulation, if the sound insulation grade is L-55 or less, there is no problem. Therefore, by properly selecting the material and thickness of the conventional cushioning member, the sound insulation class is L
It is designed to be -55 or less, 500Hz
This has been successful in the high range, but over 125-5
It was difficult to set it to L-55 or less in the sound range of 00 Hz.

The purpose of this device is 125 to 500 Hz, not to mention the high range.
It is an object of the present invention to provide a wood flooring material that has a sound insulation grade of L-55 or less even in the sound range of No. 1 and has no problem in pressure resistance despite using a perforated plate.

Means for Solving the Problems In order to achieve the above-mentioned object, a wooden flooring according to the present invention is a wooden board that is provided with a cushioning member and an upper plate and a lower plate joined to each other. And the upper plate and the lower plate are displaced from each other on the two sides intersecting at a right angle, so that the horizontal projection for nailing and the adjacent wooden board projection accommodating notch are provided on the bottom of the wooden board. The lower plate as a whole is provided with a large number of holes such that a non-perforated zone is formed between the base end of the protrusion and a predetermined distance inside and outside thereof.

As a specific example of the wood board, plywood is generally used, but other particles such as particle board, hard board, and fiber board of medium specific gravity can be used, and the surface thereof is appropriately coated. This makeup is usually performed by sticking a name wood veneer, a sawing board, a pattern sheet, a synthetic resin sheet, cork or the like on the surface or applying a coating. Of course, the makeup does not have to be applied. The thickness of the upper plate is appropriately determined in relation to the thickness of the lower plate, but is preferably 4 to 12 mm. In addition, a relatively thin cushioning material may be attached to the lower surface of the upper plate, and in some cases, this cushioning material may be divided into upper and lower parts in the middle of the thickness of the upper plate. It may be intervened. The upper plate is usually rectangular, and its four sides are subjected to processing such as inversion, tongue-and-groove, and other known joining methods.

The lower plate is appropriately selected from the materials for the upper plate, but is preferably a plywood for processing holes, and its thickness is preferably 2 to 7 mm. The hole is usually a circular hole having a diameter of 15 to 25 mm, but can be any shape such as a triangle, a quadrangle, or a polygon. The hole interval is preferably 5 to 15 mm, and the open area ratio is preferably about 10 to 40%. Although the hole arrangement is not particularly limited, it is generally arranged in the form of straight lines or in a zigzag pattern in the vertical and horizontal directions except for the non-hole zone. Further, the holes may be penetrating, or it is acceptable if at least one of the both surfaces of the lower plate has a bottomed hole, or a combination of a bottomed hole and a groove or a bottomed hole and a through hole. It may be a combination of and.

A width of 30 to 50 mm is sufficient for the non-porous zone.

Examples of the material of the cushioning member include foamed synthetic resin, foamed synthetic rubber, three-dimensional reticulated synthetic resin, viscoelastic body, and fibrous material. Among them, foamed synthetic resin is generally used. Mention may be made of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane and phenol. Further, specific examples of the fibrous substance include insulation board, glass fiber, asbestos, those obtained by impregnating these fibers with asphalt / pitch, felt, carpet and the like. The material of the buffer member is appropriately selected according to the performance required for the floor, and may be used alone or in combination. The thickness of the cushioning member is appropriately determined in relation to the material thereof, the type of floor base material, and the like.

The cushioning member and the wooden board disposed on the cushioning member are usually adhered to each other and integrated, but the two need not necessarily be adhered. In this case, a large-area cushioning member is laid on the floor substrate, and a wooden board is placed on the cushioning member and fixed with nails. Thus, when used as a cushioning member having a large area, a groove is formed in the upper portion of the cushioning member to accommodate a liquid-containing pipe having elasticity, and the liquid is cooled or heated to be used as a floor material for cooling and heating. Is also possible. Further, in order to obtain a flooring material for heating, a sheet-like heating element may be incorporated in the cushioning member.

The floor base is usually a concrete floor, but it may be formed of an appropriate material such as plywood, particle board, and medium specific gravity fiber board.

In addition, in order to more securely fix the floor material to the floor base, the nailing method and the bonding method may be used in combination,
In some cases, an adhesive may be applied to the upper surface of the horizontal protruding portion of the wooden board, and the adhesive may be adhered to the upper surface of the notch portion for accommodating the protruding portion of the adjacent wooden board to completely prevent rattling of the adjacent wooden board.

Effect According to the wood floor material of the present invention, since the cushioning member is present between the floor base and the wood board, and the lower plate constituting the wood board is the perforated board, it is extremely excellent in sound insulation.

Also, after nailing, the horizontal protrusion on the bottom of the wooden board is deformed downward, and a space is created between the nail head and the adjacent wooden board above it. Therefore, the sound insulation of the cushioning member in the portion where the nail is present is not impaired without being transmitted to the floor substrate.

By the way, when the lower plate constituting the wood plate is a perforated plate and the holes are evenly distributed throughout, the strength is relatively smaller than when a non-perforated plate is used as the lower plate. Therefore, if you walk on it after constructing it on the floor base, there is no problem in the center part of each floor material, but if you step on the seam between the floor materials or near the seam, there will be holes in the corresponding part of the lower plate. Due to this, there is a possibility that the edge of the wooden board will be slightly sunk.

However, according to the wood flooring material of the present invention, since the non-perforated zone exists between the inner and outer predetermined distances including the base end of the protruding portion, the strength of this portion does not differ from that of the non-perforated plate, and the load as described above is It does not sink by joining.

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

Example 1 This example is that shown in FIGS. 1 and 2. The wooden floor material shown in the figure is a cushioning member (1) and a cushioning member (1).
And a wood board (2) which is placed on top of and is joined to the upper board (2a) and the lower board (2b). The cushioning member (1) is
Thickness 10 mm, length 1818 mm, width 298 mm, foaming ratio 3
0 times polyethylene foam, wood board (2) top board (2a),
It is a laminated veneer with a surface of 5.2 mm, a length of 1818 mm, and a width of 303 mm, and is subjected to phase inversion processing. Lower plate (2b)
Is a plywood with the same area as the cushioning member (1) and a thickness of 7 mm,
It is joined to the upper surface of the buffer member (1). The upper plate (2a) and the lower plate (2b) are offset from each other on the two sides intersecting at a right angle, and the horizontal protrusion (3) for nailing of 50 mm and the adjacent wooden plate protrusion are arranged at the bottom of the wooden plate (2). A housing cutout (4) is provided.
A large number of holes (6) are formed in the entire lower plate (2b) so that a non-perforated zone (5) of 18 mm inside and 20 mm outside the base end (3a) of the protrusion is formed, and a total width of 38 mm. It is open. Lower plate (2
The holes (6) of b) are circular through holes having a diameter of 22 mm, and the intervals between the holes are 8 mm except for the non-hole zone (5), and they are arranged at equal intervals and in a straight line in the vertical and horizontal directions.

Between the nailing zone (3b) of the horizontal protrusion (3) and the base end (3a) of the protrusion, a large number of holes (6) exist in a row at predetermined intervals in the length direction of the protrusion (3). is doing. Then, nail (7) to the horizontal protrusion (3).
When striking, the horizontal projection (3) on the outside of the row of holes (6) was deformed downward, and there was a space between the nail head (7a) and the adjacent wooden board above it. (8) occurred (see Fig. 2).

The floor material of this example was applied to a concrete slab floor base with a thickness of 150 mm, and a light impact sound test was conducted. As a result, the sound insulation was excellent in the sound range of 125 Hz, 250 Hz and 500 Hz, and the sound insulation grade was It was confirmed to be L-55.

Example 2 This example is that shown in FIGS. 3 and 4. In the floor material of the figure, a circular through hole (6) is provided in the horizontal protrusion (3) of 70 mm between the nailing zone (3b) and the base end (3a) of the protrusion, and the nailing zone (3b). And the tip of the protrusion (3c). Others are the same as in the first embodiment.

When the hole (6) does not exist in the horizontal protrusion (3), the horizontal protrusion (3) reaches the floor base (9) via the cushioning member (1) from above. By hitting (7), the base end (3a) may be inclined obliquely downward. in this case,
There is a step between the wood board (2) and the adjacent wood board,
There is a concern that the adjacent wood board may rattle, and moreover, stress concentrates on the base end (3a), so the upper board (2a) and the lower board (2b) that make up the wood board (2) from here. ) And may be peeled off.

However, in the two embodiments described above, a large number of holes (6) are provided between the nailing zone (3b) of the horizontal protrusion (3) and the base end (3a) of the protrusion. Since they exist in a row at predetermined intervals in the length direction, when the nail (7) is struck on the horizontal protrusion (3), it bends from the place with the hole (6), and the base end of the protrusion.
(3a) The neighborhood is kept horizontal. Therefore, there is no concern that a step may occur between the nailed wooden board (2) and the adjacent wooden board, or the adjacent wooden board may rattle, and the wooden board is located above the protrusion base end (3a). There is no fear that the plate (2a) and the lower plate (2b) will separate.

Comparative Example The flooring material shown in FIG. 5 as a comparative example is the upper plate (12a) and the lower plate (12b) that make up the wooden board (12), and circular through holes (6 ) Is used for the perforated plate. Others are the same as in Example 1.

In this floor material, as shown in the same figure, when a load (L) is applied to the vicinity of the joint between the floor materials, this portion slightly sinks.

EFFECTS OF THE INVENTION Since the wood flooring material according to the present invention has the above-mentioned configuration, it is possible to improve the barrier property against sounds in all sound ranges including the sound range of 125 to 500 Hz.

Also, after nailing, the horizontal protrusion on the bottom of the wooden board is deformed downward, and a space is created between the nail head and the adjacent wooden board above it. Therefore, the sound insulation of the cushioning member in the portion where the nail is present is not impaired without being transmitted to the floor substrate. Moreover, since the floor material can be fixed to the floor base with nails, it is much easier to remove the floor from the floor base when redecorating the floor than with the adhesively fixed floor.

Furthermore, even though a perforated plate is used to improve sound insulation in the lower plate that constitutes the wooden flooring material, since there is a non-perforated zone between the inner and outer predetermined distances including the base end of the protruding portion, The strength of the part is not different from that of the non-perforated plate, and there is no fear that the floor material will sink even if a load is applied to the seams between the floor materials or near the seams.

[Brief description of drawings]

1 and 2 show Embodiment 1 of the present invention. FIG. 1 is a partially cutaway bottom view, and FIG. 2 is II of FIG.
3 is an enlarged sectional view taken along line -II, FIG. 3 and FIG. 4 show the second embodiment, FIG. 3 is a partial plan view, and FIG.
FIG. 5 is an enlarged sectional view taken along line IV-IV in FIG. 5, and FIG. 5 is a partially enlarged sectional view of a comparative example. (1) ... cushioning member, (2) ... wood board, (2a) ... upper board, (2b) ... lower board, (3) ... horizontal projection for nailing, (3a) ... projection end base, (4) ) ...
Adjacent wood board protruding part accommodating notch, (5a) ... Non-perforated zone, (6) ...
Hole.

Claims (1)

[Scope of utility model registration request] 1. A wooden board, comprising a cushioning member (1) and an upper plate (2a) and a lower plate (2b) which are arranged on the cushioning member (1) and which are joined to each other.
(2), and the upper plate (2a) and the lower plate (2b) are displaced from each other on two sides that intersect at a right angle, so that the wooden board (2)
A horizontal projection for nailing (3) and an adjacent wood board projection accommodating notch (4) are provided at the bottom of the lower board (2b) as a whole.
Non-perforated zone between the inside and outside of the protruding part base end (3a)
A wood flooring material with a large number of holes (6) so that (5) can be formed.