JPH0448258Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a thin, high-performance floor base plate that is added to the floors of apartments, condominiums, etc. and absorbs and blocks various impact sounds generated by daily activities.

(Prior art) The inventor has already published Utility Model Publication No. 53-22448 and Special Publication No. 53
-29936 and other products and technologies for preventing floor impact noise have already been developed and put into practical use, but all of these products have top finishes made of wet materials such as concrete and mortar, which reduces construction costs and There were drawbacks such as increased construction time and the occurrence of cracks. For this reason, a patent application was filed in 1980 to use a wood-based board for the upper finish.
298268 (Japanese Unexamined Patent Publication No. 156471/1982), we have newly developed a dry type vibration-proof floor, and by installing a base plate with slits on top of the cushioning material, we lower the natural frequency and improve soundproofing and vibration-proofing. We are getting good results.

(Problems to be Solved by the Invention) In the above-mentioned conventional technology, the floor surface felt a little soft, and the entire vibration-proof floor tended to be too thick.

All of these are vibration-proof floors that belong to the category of floating floors, and consist of an upper structure of a buffer plate, a base plate on top of the buffer plate, and a top plate. In order to improve soundproofing and vibrationproofing properties, it is necessary to lower the natural frequency of the entire vibration-proofing floor. For this purpose, it is necessary to reduce the spring constant of the buffer plate or increase the weight of the base plate laid on the buffer plate. However, if the floor surface is made too soft, it can lead to boat sickness, so cushioning materials tend to have a large spring constant and are made of hard materials. A method is used to lower the spring constant. Also, to increase the weight of the base board, make it thicker. In Japanese Patent Application No. 60-298268, without changing the thickness of the buffer plate, slits are cut into the base plate to maintain the weight of the plate and reduce the rigidity of the plate, thereby reducing the natural vibration of the vibration-proof floor. We succeeded in reducing the number of parts and significantly improving soundproofing and vibrationproofing performance. However, there was a problem in that it was not possible to make the floor even thinner while maintaining this high performance.

(Means for Solving the Problems) The present invention was developed in view of the above situation, and when an impact is applied to the floor, it can suppress the sinking of the floor surface without compromising its ability to absorb and block the impact, or prevent the floor from sinking when walking. The goal is to construct a thin soundproof, vibrationproof, and floor base plate that maintains stability.

The present inventor has already discovered in experiments regarding the prevention of floor impact noise that the softer the cushioning material, and the smaller and thinner the finishing plate with slits, the better the soundproofing and vibrationproofing performance. We have come to realize that this disadvantage can be compensated for by making the base plate with slits thin and small, even if the softness of the cushioning material is sacrificed to some extent to make it harder in order to stabilize the surface. That is, as a cushioning material, a flat plate 1 of a predetermined thickness, which is already known from the reference document (Sweden Patent No. 307232), is used, which is made by arranging the main fibers substantially in the longitudinal direction. The flat plate 1 has a large resistance to pressure applied from above.
It is also said to be hard. However, the point that the present inventor noticed is that the fiber plate oriented vertically is not only extremely hard and has a strong pressure resistance, but also when the pressure area is small, the pressure is applied locally. This means that only the parts are easily compressed and deformed, and therefore a cushioning effect occurs. Therefore, by arranging and pasting a thin narrow plate 2 in the form of an elongated or small piece with a slit 3 interposed therebetween on the flat plate 1, the pressing area against the flat plate 1 can be reduced. Therefore, when a high-speed impact caused by hard objects such as tapping machines colliding with each other is applied to the floor surface board 5, the vibration propagates to the width plate 2, and pressure is locally applied to the width plate 2. In addition, since the flat plate 1 is locally deformed, the flat plate 1 is also deformed in the corresponding portion, and exhibits soundproofing and vibrationproofing effects.

That is, in this invention, a narrow plate 2 is attached to the surface of a flat plate 1 made by arranging fibers approximately vertically with slits 3 interposed therebetween, and an elastic sheet 4 made of elastic rubber, foamed resin, etc. is attached to the back surface. This is a floor base board made of In addition, the narrow plate has elastic rubber on the surface of the narrow core plate.
This is a floor base plate to which an elastic sheet 4' made of foamed resin or the like is attached.

(Function) Here, when examining the vibration-proofing and sound-proofing effects, in Fig. 4, a base plate with a thickness of 12 m/m and without slits 3 is placed on a buffer plate made of glass wool with a conventional structure of 20 m/m thick. The floor impact sound level of the structure in which the floor surface board 5 is attached with adhesive is shown in graph (a), and the floor impact sound level increases at 250 cycles, and the soundproofing/vibration proofing Performance decreases. Next, graph (b) shows that the floor surface plate 5 is applied to the structure of the example shown in FIG.
This figure shows the soundproofing and vibrationproofing performance of the structure in which is attached to the width plate 2 with pin 8. Further, graph (c) shows the soundproofing and vibrationproofing performance of the structure in which the floor surface board 5 is attached with adhesive to the structure of the following example shown in FIG. 1b. In both cases, the performance is improved compared to graph (A), and the improvement in performance of graph (C) is particularly remarkable. This is because the elastic sheet 4' is pasted on the width board 2, so the impact applied to the floor surface board 5 is difficult to be transmitted to the width board 2, but if it is transmitted,
As mentioned above, the impact applied to the floor surface board 5 is applied to the flat board 1.
This causes local deformation of the material, increasing the soundproofing and vibrationproofing effects.

However, when applying soft and slow impact vibrations such as when a tire or a person walks, the effective pressurized area is large, so the impact vibrations are dispersed and the pressure resistance of the flat plate 1 acts, reducing the soundproofing and vibrationproofing performance. It is possible to completely ensure the stability of the floor surface without any problems.

(Example 1) Embodiments of the present invention will be described based on the drawings.

Figures 1a and 1b are perspective views of the entire device, with a portion cut away to show the internal structure. In this figure, the thickness is 10 m/m to 50 m/m (in this example, the thickness is 10 m/m) made by aligning inorganic fibers such as glass wool and rock wool in the vertical direction.
A thin narrow core board 2a made of plywood, particle board, etc. is attached to the surface of a flat board 1 (using m/m) with a predetermined slit 3 interposed therebetween. The width core plate 2a has a thickness of 2.7m/m to 5.5m in Fig. 1a.
This shows an embodiment using an elongated piece with a width of 70 m/m to 100 m/m (in this example, it has a thickness of 3 m/m).
m/m, width 90m/m), in Figure 1b, the thickness is 2.7m/m to 5.5m/m and the side is 150m/m.
250 m/m (in this example, the thickness is 3 m/m, the width is 90 m/m,
(using a length of 90m/m). Further, as shown in FIG. 1b, an elastic sheet 4' having a thickness of about 2 m/m is attached to the front or back surface of the narrow core plate 2a in advance (in this embodiment, the elastic sheet 4' is attached only to the front surface). ) constitutes the width plate 2. It is also possible to attach elastic sheets 4' to the front or back surfaces of the narrow core plate 2a having the structure shown in FIG. 1a. slit 3
The width of the core board 2a is approximately 2 m/m, and the shape of the end of the narrow core plate 2a is as shown in FIGS. 2b and 2c. That is, Fig. 2b
It can be formed vertically as shown in FIG. 2, or tapered at the lower end as shown in FIG. 2c. An elastic sheet 4 having a thickness of approximately 2 m/m is adhered to the back surface of the flat plate 1 for the purpose of waterproofing, soundproofing, and vibration-proofing reinforcement.

FIG. 2a shows an example of installing the floor surface board 5, and is an overall perspective view showing a mode in which the floor surface board 5 with a thickness of 5 m/m to 15 m/m is mounted on a narrow core board 2a. (In this example, a floor surface 5 with a thickness of 9 m/m is used). As the floor surface board 5, in addition to a hard board such as a wooden decorative board, a soft sheet, a carpet, etc. can be used.

As seen in the detailed cross-sectional view showing the construction mode in FIG. 3, when installing the floor surface board 5, for example, approximately 300 mm
Insert the bottom of the inverted T-shaped pin 8 into the m/m pitch, rotate the pin 90 degrees, and drive the tip of the other end of the pin 8 into the long side 7' of the floor surface board 5. .
In this case, the floor surface board 5 and the width board 2 are connected only through the pins 8 in an acoustically floating state, that is, the width board 2 and the floor surface board 5 are not in close contact with each other, and are almost The floor surface board 5 and the width plate 2 are installed in such a manner as to provide vibration insulation, so that the movement of the width plate 2 is not restricted. When attaching the floor surface board 5 to the width board 2 with adhesive, use a floor base board configured using the width board 2 with the elastic sheet 4' pasted on the width core board 2a. do.
Even if the two are attached with adhesive, the elastic sheet 4'
This is because the instantaneous deformation applied to the width plate 2 through the intervention is absorbed by the elastic sheet 4'. Figure 1b
, the elastic sheet 4' attached to the surface of the narrow core plate 2a is attached to the narrow core plate 2a along the slit 3.
Although the elastic sheet 4' is cut into the same shape and dimensions, the elastic sheet 4' may be made into a single piece without being cut.

The usual configuration for using the floor base board of this invention is to first provide a vibration-proof baseboard 9 made of elastic rubber, foamed resin, or inorganic fiberboard at the bottom of the wall base 11;
Next, the floor base plates according to the present invention are installed side by side on the floor base 10.
Afterwards, the floor surface board 5 is attached, but if the floor base board and the floor surface board 5 are integrated in advance, the construction time can be shortened. As shown in FIG.
It is possible to construct a thin hard floor finish with excellent soundproofing and vibration-proofing performance against floor impact, and a stable floor surface, just by installing it without any gaps, just as easily as laying a carpet.

(Effects of the Invention) According to this invention, the floor impact sound caused by the impact vibration applied to the floor surface board 5 is suppressed by the elastic sheet 4 or ′
Or, due to the instantaneous deformation of the width plate 2 pasted with the slit 3 interposed, it is elastically absorbed by the flat plate 1, and some of the solid sound derived within the flat plate 1 is also absorbed by the elastic sheet on the back side of the flat plate 1. 4, it is possible to very effectively attenuate noise and vibration propagating into the room below or into the adjacent room.

As mentioned above, according to the soundproofing and vibration-proofing functions of the present invention, the flat plate 1, which is a buffer plate, is quite hard and has excellent floor stability, and also absorbs instantaneous deformation of the width plate 2. However, since it absorbs impact force, even if it is thin, its performance in absorbing and blocking impact sound does not deteriorate. In order to reduce the spring constant as in the past, there is no need to increase the thickness, and the width of the width plate 2 is also thinner, making the total thickness of the floor base plate 1. Since it can be made as thin as /2, it has become possible to easily and inexpensively construct a highly livable space with a stable floor surface without lowering the indoor ceiling height of a building.

[Brief explanation of the drawing]

Figures 1a, b and 2a are perspective views of an embodiment of this invention, Figures 2b and c are partially enlarged longitudinal sectional views of the width plate, and Figure 3 is a sectional view showing the state of use; FIG. 4 is a graph showing the measured impact sound level, and FIG. 5 is an enlarged perspective view of the pin. 1... flat plate, 2a... narrow core board, 2... narrow board, 3... slit, 4 and 4'... elastic sheet, 5... floor surface board, 8... pin, 9... prevention Baseboard, 10...floor base, 11...wall base.

Claims (1)

[Claims for Utility Model Registration] 1. A narrow plate 2 is pasted on the surface of a flat plate 1 made by arranging fibers almost vertically with slits 3 interposed therebetween, and an elastic sheet made of elastic rubber, foamed resin, etc. is attached to the back side. Floor base board made by pasting 4. 2. The floor base board according to claim 1 of the Utility Model Registration Claim, in which the width board has an elastic sheet 4' made of elastic rubber, foamed resin, etc. adhered to the surface of the width core board.