JPH0351460Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a floor structure using a wood-based material as a floor finishing material.

[Conventional technology]

Although floor structures using wood-based floor finishing materials are easier to maintain when they become dirty compared to floor structures using carpet as the floor finishing material, wood-based floor finishing materials have inferior buffering performance.
Floor impact noise, especially light impact noise when something is dropped on the floor, is loud and easily echoes downstairs. Therefore, conventionally, as shown in Fig. 6, a buffer layer 6 made of glass wool or the like with a maximum density of ^about 96 kg/m3 is laid on the floor slab 1, and a floating bed made of concrete cracks is placed on this buffer layer 6. A floor structure in which a layer 7 is laid and a wooden floor finishing material 3 is laid on this floating floor layer 7, or a floor slab 1
A floor panel 10 is supported with a gap formed between it and the floor slab 1 via support legs 9 equipped with vibration-proofing material 8 such as rubber, and a wooden floor finishing material 3 is placed on this floor panel 10. A floor structure was used to lay the floor.

[The problem that the idea attempts to solve]

However, when using the former floor structure, the upper part of the floor slab has a three-layer structure, which increases the cost due to the large number of component parts, and has the drawbacks of increasing the thickness of the upper structure and lowering the ceiling height. It was hot. In addition, when using the latter floor structure,
The large number of component parts increases costs, and the superstructure is thick, which not only lowers the ceiling height, but also requires time and effort to attach the support legs to the floor panel, making it difficult to construct. It was hot.

In order to eliminate this drawback, it is considered that the floor structure is constructed by interposing an inorganic fiber board between the floor slab and the wood-based floor finishing material, and the elasticity of this inorganic fiber board reduces floor impact noise. However,
In this case, heavy items such as furniture are generally placed around the floor along the wall, whereas the middle part of the floor is usually left open as a moving space, so heavy items are placed around the floor. Therefore, the inorganic fiber board is compressed to its compression limit, and the intended vibration-proofing effect is likely to be lost. Therefore, taking into account that there is a difference in the load distribution between the floor periphery and the middle part in actual use conditions, the amount of floor sinking in response to a uniformly distributed load, such as in a no-load state, is smaller in the periphery than in the middle part. Therefore, high-density inorganic fiber board is installed around the floor.
It is conceivable to fix a low-density inorganic fiber board to the middle part of the floor. However, furniture etc.
Because it is not always possible to place furniture over the entire peripheral area of the floor due to residents' preferences and the presence of windows, etc., if the floor structure is as described above, furniture, etc. For example, if a child jumps in an unprotected area, that area is dense and the vibration isolation effect is not very good against small loads, making it easier for the impact sound to be transmitted downstairs. A new drawback will arise. The purpose of this invention is to create a floor structure that can be manufactured inexpensively and with good construction efficiency without lowering the ceiling height, and that can reduce floor impact noise regardless of the arrangement of furniture, etc. It is about providing.

[Means to solve the problem]

The characteristic structure of the floor structure according to the present invention, which was taken to achieve the above object, is that an inorganic fiber board having an uneven surface on at least one side is interposed between the floor slab and the wooden floor finishing material, and The density of the protrusion-forming board portions of the inorganic fiber board is made smaller than the density of the concave-forming board portions located between adjacent portions of the inorganic fiber board, and its effects are as follows.

[Effect]

In other words, an inorganic fiber board with an uneven surface on at least one side is interposed between the floor slab and the wood-based floor finishing material, and the density of the convex portion of the inorganic fiber board is adjusted between the adjacent areas. Because the density is lower than that of the concave-forming board part located in the middle part of the floor, which is open as a movement space in the event of a floor impact, the elasticity of the inorganic fiber board In addition to suppressing impact noise from being transmitted to the floor slab, in the area around the floor where heavy objects such as furniture are placed and a large load is applied, it is possible to suppress the impact sound from being transmitted to the floor slab. The convex portion of the board is compressed by the load of furniture, etc., and the entire surface of the inorganic fiber board, that is, the concave portion, is likely to come into contact with the floor finishing material or floor slab. , the negative load area increases, and as a result, the board is compressed to its compression limit due to heavy objects around the floor, and the intended vibration isolation effect is lost. This can be eliminated by recess-forming board sections. In addition, in areas around the floor where furniture etc. are not placed, impact loads may act in the same way as in the middle of the floor, due to people moving or children jumping, for example. Floor impact noise can be reduced by absorbing the load particularly well by the elasticity of the convex board portion.

[Effect of idea]

Therefore, the elasticity of the inorganic fiber board makes it possible to reduce floor impact noise over the entire floor area, so there is no need to lower the ceiling height, and while it can be manufactured at low cost and with good construction efficiency, it is possible to reduce the impact noise of furniture, etc. It has now become possible to provide a floor structure that can reduce floor impact noise regardless of the arrangement of the floors.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

First Embodiment As shown in FIG. 1, a high-density glass fiber board 2, which is an example of an inorganic fiber board, is laid and fixed on a floor slab 1, and a wooden floor finish is applied on this high-density glass fiber 2. The floor is constructed by laying and fixing 12mm plywood 3, which is an example of the material.

As shown in FIG. 2, the high-density glass fiber board 2 has one surface formed into an uneven surface having ridge-like protrusions 2a having a trapezoidal cross-sectional shape, and is placed on the floor with this uneven surface as the lower surface. It is laid on slab 1. The height H of the convex portion 2a is approximately 4 mm, and the density and width l ₁ of the board portion where the convex portion 2a is formed.
are approximately 80 kg/m ³ and approximately 10 mm, respectively, and the density, width l ₂ and thickness t of the board portion located between adjacent protrusion forming board portions are approximately 150 kg/m 3 and 10 mm, respectively.
Kg/m ³ and about 10 mm and about 8 mm. An example of a manufacturing method for the high-density glass fiber board 2 having such an uneven surface is to heat and heat an unsulfurized board in a normal glass fiber board manufacturing process using a press machine that forms an uneven surface. Examples include heating and press-forming using a plate-forming press, and when using this manufacturing method, the density of the convex-forming board portion is made smaller than the density of the board portion located between the adjacent board portions. It is possible. Therefore, in the case of a high-density glass fiber board with both flat surfaces, as the load acting on the floor increases, the amount of sinking of the high-density glass fiber board increases, as shown by the broken line in Figure 3. In other words, the amount of deflection increases linearly, but in the case of the high-density glass fiber board 2 manufactured by the manufacturing method described above, the load bearing area of the high-density glass fiber board 2 increases as the load increases. As the load increases, the amount of deflection of the high-density glass fiber board 2 gradually decreases as the load increases, as shown by the solid line in FIG. Therefore, high-density glass fiber board 2
The high-density glass fiber board 2 is soft and has an excellent sound insulation effect and walking feel, and when a heavy load such as furniture or a piano is placed on it, the high-density glass fiber board 2 becomes hard and can stably place the heavy load.

The means for fixing the high-density glass fiber board 2 to the floor slab 1 is a means for bonding using a vinyl acetate acrylic adhesive, and the means for fixing the plywood 3 to the high-density glass fiber board 2 is also a similar means. be.

The floor of the above structure is constructed by gluing a high-density glass fiber board 2 onto the floor slab 1, and then gluing plywood 3 onto the high-density glass fiber board 2, as shown in Figure 4 A and B. It is constructed by

The floor of the above structure has a high-density glass fiber board 2 interposed between the floor slab 1 and the plywood 3, so it feels good to walk on, has the effect of reducing impact noise, and is easy to install. It is possible.

Note that the convex portions 2a on the uneven surface of the high-density glass fiber board 2 may be uniformly distributed throughout the high-density glass fiber board 2, but may also be non-uniformly distributed, and as described above, the convex portions 2a may be ridge-like, In other words, it may be not only linear but also dotted. Also,
The cross-sectional shape of the convex portion 2a may be semicircular or triangular as shown in FIG. You may.

Second embodiment A sheet-like damping material is pasted on the lower surface of the floor finishing material 3,
A high-density glass fiber board 2 is interposed between a floor slab 1 and a floor finishing material 3 with damping material to form a floor. The damping material is rubber, bituminous, or the like.

Third Embodiment A high-density glass fiber board 2 is impregnated with a vibration-damping substance such as a viscoelastic synthetic resin or bituminous material to impart vibration-damping properties to the high-density glass fiber board 2.

Fourth Example A high-density rock wool board is used as the high-density inorganic glass fiber board 2.

Note that the construction method may be a method of pasting the high-density inorganic fiber board 2 on the wooden floor finishing material 3 and bonding such a floor finishing material 3 with the board to the floor slab 1.

[Brief explanation of the drawing]

Figures 1 to 5 show the first embodiment of the present invention, with Figure 1 being a longitudinal sectional view, Figure 2 being an enlarged longitudinal sectional view of the board, and Figure 3 showing the relationship between the floor load and the amount of deflection. The graphs shown in FIGS. 4A and 4B are vertical sectional views showing the construction procedure, and FIGS. 5A, 5B, and 5C are schematic side views showing modified examples, respectively. FIG. 6 and FIG. 7 are longitudinal cross-sectional views showing conventional examples, respectively. 1...Floor slab, 2...Inorganic fiber board, 3
...Wood floor finishing material.

Claims (1)

[Scope of utility model registration request] Between the floor slab 1 and the wooden floor finishing material 3,
An inorganic fiber board 2 having an uneven surface on at least one side is interposed, and the density of the convex portion forming board portion of the inorganic fiber board 2 is set to be lower than the density of the concave portion forming board portion located between adjacent portions of the inorganic fiber board 2. A smaller floor structure.