JPH0678685B2 - Floor structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a floor structure having excellent soundproofness, and more particularly to a floor structure that reduces floor impact sound transmitted to the downstairs on an upper floor.

(Prior Art) Various types of floor structures are known. For example, concrete floor slabs have a cushioning material such as a glass wool mat or a foamed plastic mat laid on the floor substrate, and A floor structure with floor panels such as plywood or particle board, or a floor with the above-mentioned cushioning material laid on a floor substrate such as a concrete floor slab, and floor finishing materials applied through it with joists. The structure is known.

These floor structures are absorbed by the cushioning material when the floor impact force applied to the floor panel material or floor finishing material is transmitted to the floor base,
This is intended to reduce the propagation of floor buffer sound downstairs.

However, recently, it is desired to further reduce the floor impact sound propagating downstairs, and as shown in FIG. 8, the floor base a made of a concrete floor slab has relatively large unevenness on the lower surface. A floor structure has been proposed in which a shock-absorbing force is dispersed by laying a cushioning material b such as expanded polystyrene or foamed polyethylene and applying a floor finishing material d on the upper surface of this cushioning material b via a floor panel material c. .

(Problems to be Solved by the Invention) This floor structure facilitates the dispersion of impact force and the deformation of the cushioning material b due to the unevenness provided on the lower surface. However, there are the following problems.

That is, when the floor cushioning force is applied and the cushioning material b is deformed, the concave portion e acts as an air spring on the lower surface of the cushioning material b and acts as an air spring, and repulsion occurs between the cushioning material b and the floor base a. Since the force is generated, the absorption force for the floor impact force is not sufficient.

Moreover, since a molding die is usually required to provide the concave and convex on the back surface of the cushioning material b, the manufacturing cost of the cushioning material b increases.

Furthermore, when a fibrous material is used as the material of the cushioning material b, the shape of the fibrous material is likely to collapse, and it is difficult to form unevenness on the back surface of the cushioning material b, and a large amount of it is formed inside. Since air is included, the repulsive force of the air spring is generated inside the cushioning material, and there is a problem that the impact absorbing effect of the fiber itself is not sufficiently exerted.

In view of the above, it is an object of the present invention to effectively reduce the floor impact sound by preventing the repulsive force due to the air pool from being generated between the cushioning material and the floor base.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides a perforated plate below which the holes communicate with each other.

Specifically, the solution means taken by the present invention is a concrete floor slab or the like is a floor structure in which a floor panel material or a floor set is supported on a floor base material via a cushioning material, and below the cushioning material. A plurality of perforated plates are arranged in an overlapping manner, and the holes of these perforated plates communicate with each other through the holes of the perforated plate in which the adjacent holes of the uppermost perforated plate are located below. It is configured as described above.

(Operation) With the above configuration, when a floor impact force is applied to the upper surface of the floor panel material or floor assembly, the portion of the cushioning material located above the hole of the uppermost perforated plate sinks into this hole. It deforms and absorbs the impact force.

Further, since the adjacent holes of the uppermost perforated plate communicate with each other through the holes of the lower perforated plate, the uppermost perforated plate located below the place where the floor impact force is applied. Since the air inside the holes of the plate diffuses horizontally through the holes of the lower perforated plate and the holes of the uppermost perforated plate, the cushioning material does not receive the repulsive force from the uppermost perforated plate, Absorb impact force.

(Example) Hereinafter, the Example of this invention is described based on drawing.

FIG. 1 shows a cross-sectional structure of an embodiment of a floor structure according to the present invention. This floor structure is a square-shaped lower hole having a square shape integrally laminated on a floor base 1 made of a concrete floor slab or the like. The plate 2 and the upper perforated plate 3 are laid, the floor panel material 5 is laid on the upper perforated plate 3 via the cushioning material 4, and the floor finishing material 6 is further laid on the floor panel material 5. It becomes. It should be noted that instead of the floor panel member 5 in this embodiment, a floor set made of joist or the like may be used.

As the floor finishing material 6, plywood or floor material can be appropriately used, and as the floor panel material 5, a material that can stably support the floor finishing material 6 can be appropriately used. Specifically, particle board, plywood or wood. A cement board or the like can be used.

As the cushioning material 4, an inorganic fiber mat such as glass wool or rock wool, a synthetic fiber mat such as polyester or polypropylene, or a material made of foamed plastic can be appropriately used.

As the lower and upper perforated plates 2 and 3, plywood having a thickness of about 2.7 mm, particle board, fiber board, synthetic resin plate, thick sheet made of rubber or the like can be appropriately used.

As shown in FIG. 2, the lower perforated plate 2 is provided with a plurality of horizontally elongated slits 2a extending in the lateral direction substantially in parallel to the longitudinal direction, while the upper perforated plate 3 is provided in the longitudinal direction. A plurality of vertically elongated slits 3a are provided substantially parallel to each other in the horizontal direction, and the horizontally elongated hole 2a and the vertically elongated hole 3a are orthogonal to each other.

By doing so, the vertically elongated holes 3a are in communication with each other through the horizontally elongated holes 2a, the horizontally elongated holes 2a are in communication with each other through the vertically elongated holes 3a, and the air inside one of the elongated holes 2a, 3a is the other. It can freely flow through the long holes 3a, 2a. In this case, if the overlapping ratio of the long holes, that is, the ratio of the total area of the overlapping portions to the hole area of the long holes 2a, 3a is set to 20% or more, the air circulation of the long holes 2a, 3a becomes smooth. Therefore, it is preferable.

Further, as in this embodiment, the lower perforated plate 2 and the upper perforated plate 3 are laminated and integrated, and the laterally long hole 2a of the lower perforated plate 2 and the vertically long hole 3a of the upper perforated plate 3 are integrated. Orthogonal to each other, even if these perforated plates 2 and 3 absorb moisture and expand, the horizontally long holes 2a and the vertically long holes 3a
Absorbs the horizontal expansion of the perforated plates 2 and 3,
No warpage occurs in 2 and 3.

Hereinafter, in the floor structure of the present embodiment, the action when the floor impact force is applied on the floor finishing material 6 will be described with reference to FIG.

When a floor impact force indicated by an arrow in the figure is applied, a portion 4a of the cushioning member 4 located above the vertically elongated hole 3a of the upper perforated plate 3 is deformed so as to sink into the vertically elongated hole 3a, and the upper portion of the cushion member 4 is deformed. Only the portion 4b of the perforated plate 3 which is supported by other parts repels. As described above, in the floor structure of this embodiment, the cushioning material 4 is partially compressed and easily deformed at the time of floor impact, so that the floor finishing material 6 is used.
When the floor impact force is applied to the cushioning material 4, the cushioning material 4 is easily deformed by the local compression action, and the floor impact force can be effectively absorbed.

Further, in the above case, the air in the vertically elongated hole 3a located below the place where the floor impact force is applied passes through the horizontally elongated hole 2a to the other vertically elongated hole.
Since it diffuses horizontally to 3a, the inside of the vertically elongated hole 3a does not form an air pocket unlike the conventional structure. Therefore, the repulsive force due to the air spring does not occur between the cushioning material 4 and the floor base 1.

Furthermore, if a fiber material containing air such as glass wool or rock wool is used as the cushioning material 4,
Since the air in the cushioning material 4 diffuses horizontally through the vertically elongated holes 3a and the horizontally elongated holes 2a, the repulsive force due to the internal air pressure of the cushioning material 4 at the time of floor impact is also reduced. Therefore, in the floor structure of the present invention, the cushioning effect of the fibrous cushioning material 4 is fully exhibited.

4 and 5 show a first modified example of the floor structure according to the above-mentioned embodiment, in which the upper perforated plate 3 is provided with horizontally elongated holes 3b which are intermittently extended in the lateral direction and are parallel to the longitudinal direction. There is. Further, the lower perforated plate 2 is provided with vertically elongated holes 2b which extend intermittently in the vertical direction, and are arranged in parallel with each other in the horizontal direction, and those adjacent to each other in the horizontal direction are staggered in the vertical direction. The vertically long hole 2b is orthogonal to the horizontally long hole 3b.

By doing so, as in the previous embodiment, the horizontally elongated hole
3b communicates with each other through the vertically elongated hole 2b, and vertically communicates with each other through the horizontally elongated hole 3b, and one of the elongated holes 3b, 2b
The internal air can freely flow through the other long holes 2b and 3b.

6 and 7 show a second modified example of the floor structure according to the above embodiment, in which upper side perforated plate 3 is provided with circular holes 3c at equal intervals in the vertical and horizontal directions. In addition, circular holes 2c are provided in the lower perforated plate 2 at equal intervals in the vertical and horizontal directions, and mutually adjacent ones in the horizontal direction are staggered in the vertical direction,
The circular hole 3c of the upper perforated plate 3 overlaps the circular hole 2c of the lower perforated plate 2.

By doing so, similarly to the above-described embodiment, the circular holes 3c of the upper perforated plate 3 pass through the circular holes 2c of the lower perforated plate 2 and the circular holes 2c of the lower perforated plate 2 become The circular holes 3c of the upper perforated plate 3 communicate with each other, and the air inside one of the circular holes 2c, 3c can freely flow through the other circular hole 3c, 2c.

Instead of the embodiment and each modified example, the cushioning material 4, the floor panel material 5, and the floor finishing material 6 may be appropriately combined and integrated in advance.

(Effects of the Invention) As described above, according to the floor structure of the present invention, the adjacent holes of the uppermost perforated plate are disposed below the cushioning member through the holes of the perforated plate located below. Since a plurality of perforated plates provided so as to communicate with each other are provided, the cushioning material is a hole of the uppermost perforated plate when a floor impact force is applied to the upper surface of the floor panel material or floor assembly. Since it deforms so as to sink into the inside of the, the absorption of impact force is smooth. Further, since the air inside the holes of the perforated plate is communicated with each other vertically and diffused, the repulsive force of the air spring does not occur between it and the floor base, so that the harmful effect of the air spring is eliminated. The floor impact sound transmitted downstairs can be effectively reduced.

When a fiber material containing air such as glass wool mat or rock wool mat is used as the cushioning material, the air inside the cushioning material can be diffused horizontally through the holes of the perforated plate during compression deformation. Since the repulsive force of the air spring inside the cushioning material is reduced and the impact absorbing power of the fiber itself is exerted as it is, the floor impact force transmitted downstairs can be effectively used by using a general-purpose fiber mat. Can be reduced.

[Brief description of drawings]

1 to 3 show a floor structure which is an embodiment of the present invention, FIG. 1 is a sectional view, FIG. 2 is a perspective view of a perforated plate, and FIG. 3 is a sectional view showing the action, 4 and 5 show a perforated plate according to a first modification of the floor structure, and FIG. 4 is a plan view and a fifth view.
FIG. 6 is a sectional view taken along line V--V in FIG. 4, FIGS. 6 and 7 show a perforated plate according to a second modification of the floor structure, FIG. 6 is a plan view, and FIG. 7 is FIG. VII-VII plan view at No. 8,
The figure is a cross-sectional view of a conventional floor structure. 1 ... Floor base 2 ... Lower perforated plate 2a ... Horizontally long hole 2b ... Vertically long hole 2c ... Circular hole 3 ... Upper perforated plate 3a ... Vertically long hole 3b ... Horizontally long hole 3c ... Circular hole 4 ... Buffer material 5 ... Floor panel material 6 ... Floor finishing material

Claims (1)

[Claims] 1. A floor structure in which a floor panel material or a floor set is supported on a floor substrate such as a concrete floor slab via a cushioning material, and a plurality of perforated plates are provided below the cushioning material. The holes of these perforated plates are arranged so as to overlap each other so that adjacent holes of the uppermost perforated plate communicate with each other through the holes of the perforated plate located below. Characteristic floor structure.