JPH0735010Y2 - Soundproof flooring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a soundproof flooring material having improved soundproofing performance against light-weight floor impact sound.

(Prior Art) Conventionally, as a soundproof flooring material, there is known a flooring board integrally provided with a cushioning material made of a foam, a fiber mat, a non-woven fabric or the like on the lower surface thereof.

This soundproof floor material absorbs the impact force transmitted to the downstairs by the shock absorbing force of the cushioning material, thereby trying to obtain the soundproofing property, but the floor impact force applied to the floor surface is Thick cushioning must be used for effective absorption. Therefore, when trying to improve the soundproofing performance, the thickness of the soundproofing floor material becomes thicker, which causes a problem that the height from the floor base to the floor surface becomes high.

Therefore, recently, as shown in Japanese Patent Laid-Open No. 63-69246, a sound absorbing body, which is formed by partially attaching a rectangular parallelepiped elastic body on both front and back surfaces, is interposed between a surface layer material and a base material. Soundproof floor material, or floor plate a and floor plate a as shown in FIG.
A cushioning material b is integrally provided on the lower surface of the floor board, and the floor board a is composed of upper and lower two board materials c and d and a rectangular parallelepiped elastic body e interposed between the board materials c and d. A soundproof floor material f has been proposed.

Each of the above soundproof floor materials attenuates sound waves by moving the sound waves up and down between the plate materials in the space formed between the elastic bodies, and when the floor impact force acts on the floor surface. It is intended to be deformed to absorb impact energy, and these are intended to improve soundproofing performance.

(Problems to be solved by the invention) However, when the upper and lower surfaces of the rectangular parallelepiped elastic body e are abutted against the upper and lower plate materials c and d like the latter soundproof floor material f, the floor surface When the floor impact force is applied to the elastic body e, the large area of the elastic body e is constrained by the upper and lower plate members c and d, so that the elastic body e has a small amount of deformation as shown in FIG. Therefore, since the impact energy absorbing power of the elastic body e is insufficient, there is a problem that the soundproofing performance of the soundproofing floor material f is not sufficient.

Therefore, the present inventor considered that the shape of the elastic body e interposed between the upper and lower plate members c and d is spherical.

When the elastic body e has a spherical shape in this way, the contact area between the elastic body e and the upper and lower plate members c and d is reduced, so that the elastic body e has a large initial compressive deformation and can absorb a small impact force well. As a result, it is possible to obtain a soundproof flooring material f that is excellent in impact energy absorption and, in turn, soundproofing.

However, when the elastic body e has a spherical shape, the elastic body e moves when interposing the upper and lower plate members c and d, which makes it difficult to position the elastic body e, and the elastic body e is evenly distributed. It is difficult to absorb the shock due to the difference in the distribution density of the elastic body, and there is a possibility that the soundproof effect may not be constant.

In view of the above, it is an object of the present invention to distribute the elastic body substantially evenly even though the elastic body interposed between the upper and lower plate members has a spherical shape.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a structure in which spherical elastic bodies are preliminarily connected in a substantially evenly distributed state, and the spherical elastic bodies are provided only at the upper and lower portions thereof. In this case, the upper and lower plate members are brought into contact with each other.

Specifically, the solution means taken by the present invention is premised on a soundproof floor material in which a cushioning material is integrally provided on the lower surface of a floor board formed by vertically stacking a plurality of board materials, and between the board materials, A reticulated elastic material formed by connecting spherical elastic particles in a reticulated shape is interposed by contacting only the upper and lower parts of the elastic granular material with the plate members located above and below the reticulated elastic material. It is a thing.

(Operation) With the above-described configuration, the reticulated elastic material in which the substantially spherical elastic particles are connected in a reticulated manner is interposed between the plate materials located above and below the reticulated elastic material. Since they are connected to each other, they do not move freely despite being spherical.

Also, when a light weight floor impact force is applied to the top surface of the floorboard, the elastic granules absorb the light weight floor impact force, and when a heavy weight floor impact force is applied to the top surface of the floor surface, the elastic granules and upper and lower parts of the reticulated elastic material are combined. Since the plate material located at the upper surface is in contact with only the upper and lower portions of the elastic granular material having a small area, the elastic granular material has a large degree of freedom with respect to deformation, the elastic granular material is easily compressed and deformed, and the reticulated elastic material is entirely covered. It comes into contact with the upper and lower plate materials and absorbs the heavy floor impact force.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross-sectional structure of a soundproof flooring material A, which is an embodiment of the present invention, by cutting a part of the soundproofing flooring material A. The cushioning material 2 is integrally attached with an adhesive.

The floor plate 1 includes a surface material 3 made of a dried veneer and a base plate member 4 integrally laminated on the lower surface of the surface material 3,
The base plate member 4 includes an upper plate member 5 formed of a three-ply plywood arranged above, a lower plate member 6 formed of a three-ply plywood arranged below, and an interposing member between the upper plate member 5 and the lower plate member 6. The reticulated elastic material 7 is formed.

Hereinafter, a method for manufacturing the base plate member 4 will be described.

First, as the mesh-like elastic material 7, a mesh having a diameter of about 1 to 1.5 m
Spherical body 7 made of m expanded vinyl chloride as an elastic particle
Prepare the one to which b is fixed.

Next, the upper surface of the spherical body 7b is on the lower surface of the upper plate member 5, and the spherical body 7b
The upper and lower parts of the spherical body 7b and the upper and lower plate members 5 and 6 are bonded to each other with an adhesive in a state where the lower surface of the lower plate member is in contact with the upper surface of the lower plate member 6, respectively. In this way, the plate body 1 in which the reticulated elastic material 7 is interposed between the upper and lower plate materials 5 and 6 is obtained.

As described above, by interposing the net-like elastic material 7 in which the spherical bodies 7b are formed at each intersection of the nets 7a between the upper and lower plate members 5 and 6, the spherical bodies 7b can be interposed between the upper and lower plate members 5 and 6. Can be easily and reliably distributed substantially evenly.

The reticulated elastic material 7 can be obtained, for example, as follows. That is, the mesh 7a made of synthetic fiber or the like is dipped in a vinyl chloride resin liquid mixed with a foaming agent and then pulled up. By doing so, the synthetic resin liquid is pulled up while being attached to the intersection of the net body 7a. After that, the net body 7a to which the synthetic resin liquid is attached is heated. In this way, the foaming agent in the vinyl chloride resin adhering to the intersections of the net body 7a is foamed, foamed vinyl chloride is formed at the intersections of the net body 7a, and the elastic spherical body 7b is formed. It is possible to obtain the reticulated elastic material 7 in which substantially spherical elastic particles are connected in a reticulated manner.

As the upper plate member 5 and the lower body member 6, instead of the three-ply plywood, a particle board, a wood cement plate, a plastic plate, or the like that can stably support the surface member 3 can be appropriately used, and can also be reticulated. Net 7a of elastic material 7
The material and the size of the mesh, or the material and the diameter of the spherical body 7b can be appropriately changed.

As the cushioning material 2, one capable of absorbing the floor impact force applied to the floor board 1 can be appropriately used, but specifically,
An inorganic fiber mat such as glass wool or rock wool, a plastic fiber mat such as polyester or polypropylene, or a foam plastic mat can be used.

When the floor impact force is applied to the upper surface of the soundproof floor material A described above, the spherical body 7b is provided with the upper and lower plate members 5, 6 only in the upper and lower portions having a small area.
As shown in FIG. 2 (a), the initial deformation at the time of compression is large, and it is possible to effectively absorb the impact energy by compressively deforming into a flat elliptical cross section.

FIG. 3 shows a first modified example of the soundproof floor material A.
In the modified example, the upper plate member 5 of the base plate member 4 is composed of plywoods 5a and 5b arranged vertically and a vibration damping sheet 5c interposed therebetween. In this way, when the vibration damping sheet 5c is interposed between the plywoods 5a, 5a, when the floor impact force acts on the upper surface of the floor plate 1, the vibration of the floor plate surface is absorbed by the vibration damping sheet 5c. The soundproofing effect of the material A is improved. Instead of the vibration damping sheet 5c, an impact sheet made of the same or different material as the buffer agent 2 may be interposed, or
The same mesh elastic material 7 as described above may be interposed, and a total of two layers of the mesh elastic material 7 may be interposed.

Further, in the first modified example, the lower plate member 6 is provided with slit-shaped grooves 6a opened on the lower surface in any one of vertical and horizontal directions or in two orthogonal directions.
As a result, the flexibility of the lower plate material is increased, and the impact absorbency and the conformability to the floor base made of concrete floor slab or the like are improved. Further, the slit-shaped groove 6a may be opened on both upper and lower surfaces, and the lower plate member 6 may be completely divided by the slit-shaped groove 6a. In FIG. 3, 8a is a male part for actual joining, and 8b is a female part for actual joining.

FIG. 4 shows a second modified example of the soundproof floor material A.
In the modification, the lower member 6 of the base plate member 4 is formed of a perforated plate having a large number of through holes 6b penetrating in the vertical direction. By doing so, when a floor impact force is applied to the upper surface of the floor plate 1, the air inside the through hole 6b passes through the gap between the spherical bodies 7b of the reticulated elastic material 7 and inside the other through hole 6b. Can flow to. Therefore, even if the impact sound generated by the floor impact force reaches the through hole 6b as air vibration, the air vibration inside the through hole 6b is diffused from the gap of the mesh elastic body 7 and the vibration is weakened. Becomes difficult to be transmitted downward, and the soundproof performance of the soundproof floor material A is improved.

(Effect of the Invention) As described above, according to the soundproof flooring material of the present invention,
Since the net-like elastic material, which is formed by connecting substantially spherical elastic particles in a mesh shape, is interposed between the plate members located above and below so as to contact the upper and lower plate members, the elastic particles are free even though they are spherical. The elastic particles can be easily and reliably distributed substantially uniformly between the plate members because they do not move.

Further, since the elastic bodies are connected in a net shape, the connecting portion is soft and does not hinder the free deformation of the spherical elastic body.

Also, since only the upper and lower parts of the spherical elastic particles are brought into contact with the upper and lower plates, the initial deformation amount due to the compressive deformation of the elastic particles is large, so it is easy to perform the compressive deformation when a lightweight floor impact force is applied. When the heavy floor impact force is applied, the elastic granules are crushed and the whole mesh elastic body abuts the upper and lower plate materials to absorb the heavy floor impact force. It is possible to improve soundproofing performance against heavy floor impact sound.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a soundproof flooring according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a deformed state of an elastic granular material when a floor impact force is applied to the floor surface. (A) is the case of the soundproof flooring of the present invention, and (b) is the third case of the conventional soundproofing floor.
FIG. 4 is a sectional view of a first modified example of the soundproof floor material, FIG. 4 is a sectional view of a second modified example of the soundproof floor material, and FIG. 5 is a sectional view of a conventional soundproof floor material. A: Soundproof floor material 1 ... Floor board 2 ... Buffer material 3 ... Surface material 4 ... Base plate member 5 ... Upper plate material 6 ... Lower plate material 7 ... Resilient elastic material 7a ... Net body 7b. Sphere

Claims (1)

[Scope of utility model registration request] 1. A soundproofing floor material in which a cushioning material is integrally provided on a lower surface of a floor plate formed by stacking a plurality of plate materials on top of each other, wherein substantially spherical elastic particles are connected in a mesh shape between the plate materials. A soundproof flooring material, wherein the reticulated elastic material is interposed by contacting only the upper and lower parts of the elastic granules with the plate materials located above and below the reticulated elastic material.