JPH0452351Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is designed to reduce floor impact noise (solid vibration sound) that is generated from various daily activities in buildings where wooden floor panels are attached to the floor surface. This relates to a wooden vibration-proof flooring material that absorbs and blocks vibrations.

(Prior art) The inventor has already published Utility Model Publication No. 51-5241 and Special Publication No. 53
In No. 32184, soundproof flooring technology was developed to prevent floor impact noise, and in Utility Model Publication No. 53-22448, a floor plate for preventing floor impact noise was developed and put into practical use. Because wet materials such as mortar and concrete are used to finish the upper part of the board, there are drawbacks such as excessive construction time and man-hours when constructing the floor, and the weight becomes excessive after finishing, making it difficult for small-scale construction and remodeling work. is costly;
It wasn't necessarily appropriate.

For this reason, the above-mentioned mortar is used to finish the upper part of the buffer plate.
Instead of using wet materials such as concrete,
Attempts have been made to remedy these deficiencies by using dry materials such as plywood and particle board. However, when the top finish of the buffer board is changed to a dry material such as particle board, this material is thin and lightweight, which increases the natural frequency of the floor, and furthermore, in a certain frequency range, the finish resonance occurs, and the floor impact noise prevention performance deteriorates. For this reason, there has been a problem in that it is difficult to use a hard material such as a wooden floor veneer, which generates excessive floor impact noise, for the floor surface.

However, the demand for products using this wooden floor decorative board is high in a climate as hot and humid as our country.
As problems such as mold and mites caused by laying carpets on Western-style rooms with concrete floors in apartment complexes have come to light, the number of cases has suddenly increased in recent years in order to avoid such problems. It is in.

In an attempt to solve this problem, a buffer board was pasted under the decorative wood floor board, or a groove was cut on the bottom of the decorative wood floor board and a buffer board was pasted on the decorative wood floor board. Boards are commercially available, and the floor is constructed by placing these floorboards on a floor base. However, these buffer plates are thin, and the grooves of the above-mentioned structure are integrated with the surface wooden floor decorative board, so the vibration-proofing effect is almost nil. The only utility was recognized as a directly attached floor that can be raised.

In addition, in Special Publication No. 56-23509,
After pouring the leveling mortar 2 on the concrete floor slab 1, the single pieces 41 of the divided subfloor material are laid on the elastic molded plate 3 without contacting each other.
A floor finishing method has been proposed in which a floor finishing material 5 is arranged on the top surface of one group to form a floor finishing board, and this floor finishing board is laid on a concrete floor slab. The resulting floor structure is disclosed.

(Problem to be solved by the invention) However, even in the example shown in the above-mentioned Japanese Patent Publication No. 56-23509, the floor finishing material 5 placed on the group of single pieces 41 is the final surface layer. The floor covering 5 is described as being composed of a soft, resilient sheet material in order to maintain the acoustic independence of the single piece 41. Thus, in order to maintain the acoustic independence of the single piece 41, it is essential that the final surface layer be composed of a soft sheet material.
If the floor finishing material 5, which is the final surface layer, were to be made of a hard material, the absorption performance of floor impact sound would be significantly reduced, and there is a recent demand for the final surface layer to be made of a hard board material. The problem is that it is not possible to respond to

(Means for Solving the Problems) This invention improves the above-mentioned conventional problems and makes it possible to use a wooden floor decorative board as the final surface layer while maintaining floor impact sound absorption performance. It is.

That is, in this invention, a finishing plate with penetrating or semi-penetrating slits provided at predetermined intervals is closely attached to a buffer plate laid on the floor base of a building, and a synthetic resin sheet is placed on top of this finishing plate. It is characterized in that a flexible thin plate made of the like is adhered, and a wooden floor decorative board is disposed on the flexible thin plate.

Note that the flexible thin plate may be continuous or may be cut at key points.

Further, as the buffer plate, for example, a fiberboard, an elastic synthetic resin board (for example, a foamed synthetic resin board), or a fiber material with uneven front and back surfaces in which synthetic resin fibers are intertwined in a three-dimensional shape is used.

Furthermore, plywood, particle board, etc. are used for the finishing board, and asphalt paper, elastic rubber sheet, foamed synthetic resin sheet, etc. are used for the elastic flexible thin board.

(Function) According to this invention, the impact applied to the top layer of decorative wooden flooring first vibrates the decorative wooden flooring, and the impact is reflected and dispersed by the flexible thin plate of the layer immediately below. Since the vibrations are significantly attenuated, the effect of the first stage is that the amount of solid sound produced by the wooden floor veneer itself, which is the sounding body, is drastically reduced.

Next, even if the finished plate in which a plurality of slits are formed is vibrated by this damped remaining impact vibration, the increase and diffusion of the impact vibration due to the resonance phenomenon of the finished plate is limited by the action of the slits. and,
Due to the free stretch and vibration damping properties of the elastic flexible thin plate sandwiched between the wooden floor decorative board and the finishing board, the finishing board divided by the slits can be moved in short order, just like when a small fan is moved. This results in only partial, individual free vibrations that end in time. For this reason, the action and effect of the second stage are as follows:
It is possible to almost eliminate the increase and diffusion of vibration caused by the resonance phenomenon of the finishing plate near 250 Hz as shown in Figures 5 and 6 below, and minimize the propagation of floor impact energy to the bottom layer of the buffer plate. It can be prevented. Next, as the action and effect of the third stage, in order to effectively absorb the residual energy of the base plate that has been subdued by the buffering effect of the buffer plate, a harmful amount of floor impact vibration is transmitted to the lower floor base. It has become possible to almost completely prevent this. In this way, the finished board divided by the slits is sandwiched between the flexible thin board on the upper layer and the buffer board on the lower layer, so the top layer of the decorative floor board is made of a hard material such as a wooden board. Even if they are configured, they will not be acoustically unified. That is, the effect of the slits formed on the finished plate is not impaired.

The transmission of impact vibrations to each component is efficiently prevented by the actions and effects of the first stage, second stage, and third stage, making it possible to obtain the desired vibration damping effect as a whole. It is.

Therefore, by pasting a flexible thin plate such as asphalt paper, elastic rubber sheet, foamed synthetic resin sheet, etc. on the finishing board, the final surface layer of the floor decorative board can be made hard, and the surface of the buffer board can be made hard. Even though the finishing plate is made of dry material and is thin and lightweight, the floor impact sound prevention performance in a specific frequency range (250 Hz) does not deteriorate. This made it possible to construct vibration-proof floors.

(Example) Next, an example of this invention will be described based on FIGS. 1 and 2.

In the figure, 11 is the floor base of the building,
If the surface is uneven, a leveling layer 10 is applied and then the wooden vibration-proof flooring material of this invention is laid.
Further, reference numeral 9 denotes a wall base of the building, and its surface is also coated with a leveling layer 8 in the same manner as the floor base 11.

1, which is one of the above-mentioned buffer materials, is a buffer board with a predetermined thickness made of a maintenance material such as glass wool, rock wool, or vegetable fiber. End thin strip 7
It is in contact with the wall base 9 and the leveling layer 8 via.

A finishing plate 3 having a through slit 4 is tightly installed on the buffer plate 1.

The width of the slits 4 is approximately 1 mm to 2 mm, and the distance between adjacent slits 4 is 100 mm to 300 mm as standard, and the optimum dimensions are determined. Also,
The shape of the slit 4 is a through or semi-through parallel type as shown in Fig. 4a and b, as well as a parallel type as shown in Fig. 4c.
V-cut type, or as shown in Figure 4 d,
It may also be a double V-cut type. Further, on the surface of the finishing plate 3 having the slits 4, each strip between the slits 4, 4 of the finishing plate 3 due to floor impact partially appears.
In order to suppress the vibration of the wooden floor decorative board 6 and reduce the amount of sound produced without interfering with the individual vibrations, a thin flexible board 5 made of asphalt paper, rubber sheet, foamed synthetic resin sheet, etc. is attached. ing.

Note that a moisture-proof film may be attached to the front or back surface of the buffer plate 1 in advance.

A wooden floor decorative board 6 is applied to the top layer. This is because the wooden vibration-proof flooring material of this invention has excellent floor impact sound prevention performance, which has made it possible to use such a wooden hard floor decorative board.

As a wooden vibration-proof flooring material, an elastic flexible thin plate 5 which has a predetermined shape and size is placed on the front and back of the finishing plate 3.
Then, the buffer board 1 and the wooden floor decorative board 6 are closely attached and integrated.

Next, as shown in FIG.
The construction may also be carried out by inserting the end thin strip 7.

In order to suppress the increase in the natural frequency of the entire floor, softening the buffer plate 1 or narrowing the spacing between the slits 4 to prevent the resonance of the finishing plate 3 may cause the load from the floor to be excessive. There is a risk that the floor surface may partially subside. In order to prevent this, a plate made of glass wool, rock wool, etc. made with the main fiber direction in the horizontal direction is cut to a specified width, and then it is stacked and troweled to make the main fiber direction horizontal. When the thin strip 2 or the end thin strip 7 configured such that the fibers are in the longitudinal direction is installed in a predetermined position, this
Because it has the effect of increasing compressive strength, it
Since the elongated plate pieces between the slits 4 of the finishing plate 3 are supported, even if the buffer plate 1 is soft, subsidence deformation of the floor surface hardly occurs under the permissible load. Buffer plate 1
Because of its thickness, if the hardness is large or the distance between the slits 4 is large, there will be little sinking deformation due to loading on the floor surface, so the end thin strip 7
Except for this, the other strips 2 are not really necessary.

It is to be noted that it is more convenient to install the thin strip 2 in a predetermined shape if it is closely attached to the periphery of the buffer plate 1 in advance.

Figures 5 and 6 show that a floor impact sound level test, which expresses the level of sound generated downstairs due to vibrations on the upper floor in decibels [dB] specified in JIS A1418, shows that the finished board 3 This shows the actual measurement results of floor impact noise prevention performance when a through slit 4 is provided and when this slit 4 is not provided.The former is represented by a solid line b, and the latter is shown by a broken line a. It is represented. In Figure 5, the thickness of buffer plate 1 is 10 mm.
FIG. 6 shows an example in which the thickness of the buffer plate 1 is 25 mm. The other specifications are common to Figures 5 and 6. On the 9 mm thick plywood of the finishing plate 3, through-parallel slits 4 are cut at 100 mm intervals with a width of 1 mm. The thickness of the flexible synthetic resin sheet 5 was 1 mm, and the thickness of the wooden floor decorative board 6 was 6 mm.

The actual measurement results in both figures show that the finished plate 3 is similar to this idea.
By providing the slits 4 in the slits 4, this design significantly improves the prevention performance of floor impact noise at 250 Hz, where the floor impact sound reaches its peak value due to the resonance of the floorboard. The corresponding point of the solid line b indicating this invention is much lower than the point indicated by the above-mentioned broken line a, indicating the remarkable effectiveness of this invention.

It should be noted that among the constituent materials of this invention, if the combination of the flexible thin plate 5 and the finishing plate 3 is doubled, even higher performance can be achieved.

(Effects of the invention) As described above, according to the wooden vibration-proof flooring material of this invention, on the buffer board laid on the floor base of a building,
A finishing plate with penetrating or semi-penetrating slits provided at predetermined intervals is adhered to it, and a flexible thin plate made of a synthetic resin sheet or the like is pasted onto this finishing plate, and a wooden floor is placed on top of this flexible thin plate. Because the decorative board is installed, even if a hard wooden floor decorative board is used as the top layer, the floor impact noise prevention performance will not be reduced. Since solid vibrations applied to the floor are extremely well prevented and propagation of solid vibrations to the floor on the same floor is also blocked, the living environment of downstairs and adjacent rooms can be significantly improved.

In addition, the constituent materials of the dry-type vibration-proof floor of this invention are all dry and lightweight, and the overall thickness is much thinner than that of conventional construction methods, reducing the number of construction steps and construction time. Construction and remodeling work can also be supplied at low cost.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional perspective view showing an embodiment of this invention, Fig. 2 is a partially sectional perspective view, Fig. 3 is a partially front sectional view, and Figs. A sectional view showing an example of changing the slit shape in the plate,
FIGS. 5 and 6 are graphs for measuring floor impact noise prevention performance. 1... Buffer board, 2... Thin strip, 3... Finishing board,
4...Slit, 5...Flexible thin plate, 6...Wood floor decorative board, 7...End thin strip, 9...Wall base, 1
1...Floor base.

Claims (1)

[Scope of utility model registration request] On any buffer plate, on a finishing plate with penetrating or semi-penetrating slits provided at predetermined intervals,
Wooden floor decorative boards made of synthetic resin sheets, etc. are laminated one after another with a flexible thin board that is much thinner than the finishing board and the top layer of wooden floor decorative boards interposed, and formed into a predetermined shape and size. A wooden vibration-proof flooring material characterized by its integrated structure.