JPS6290465A - Anti-vibration flooring - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is an anti-vibration system for reducing the transmission of floor impact noises generated when children, etc. jump on the floors of houses, especially apartment complexes, from being transmitted downstairs. B information related to flooring materials.

(Prior Art) In recent years, floor impact noise from above floors in apartment complexes has become a major social problem. This floor! The sound is caused by the vibration of the floor structure due to the impact caused by people walking or jumping.
This is caused by the sound being emitted from the basement floor below the floor.

-F Notation Impact sounds are classified into two types: those caused by the impact of pumice stones such as footsteps, and those caused by the weight of a child jumping up and down (impact force 387).
5N>. Among these, floor impact noise caused by light impact can be easily solved by laying soft materials such as carpets or tatami mats on the floor surface to absorb and soften the impact force.

On the other hand, the floor impact noise caused by t @ collapse impact resistance cannot be absorbed by surface materials such as carpets due to the large impact force, and no sufficient solution has been found. As measures to reduce WK noise, methods such as increasing the thickness of the floor slab and creating a floating floor structure are known. In other words, the former increase in floor slab thickness is, for example, if the thickness of the floor slab is 3001nT11, which is twice the normal thickness, and an impact force of 3875N is applied,
Compared to the case of I11 thick concrete floor slab, approx.
It is possible to reduce the floor v # wI sound, and for reference, the noise rating based on the floor impact sound level of the Architectural Institute of Japan standards is L-55, and as a practical experience, the sound caused by Ith impact is a little If you plan your life carefully with the mulch you are concerned about, you can reduce the floor-1 impact sound to a level that does not pose a problem.In addition, the latter floating floor T method uses the upper floating ball H (concrete 1 ~Thickness 50 mm> and loose!+I layer (Glass wool 96 kCJ/yn", thickness 25~50 II 1 m
) is a method of reducing the impact force applied to the concrete slab. The larger the amount of ffl is, and the smaller the spring constant of the buffer H, the more effective it is.For reference, the slab thickness is 150III.
The spring constant of the glass wool is 8 x 108N/by the floor impact sound level. 1'! The level 4 is 50, and the sound of the floor is reduced to a level where it is almost unnoticeable in daily life.

(Problems to be Solved by the Invention) However, in both of the above-mentioned conventional measures for reducing floor impact noise, it is necessary to increase the concrete thickness of the floor, which leads to an increase in floor collapses, and especially In high-rise buildings, this method is disadvantageous in terms of structural design and also has the disadvantage of significantly increasing costs.

Therefore, when considering the cause of the floor impact sound mentioned above,
I! ! When the concrete receives an impact force, this impact force
・The transmitted impact force causes the floor slab itself to bend and vibrate, and the vibration of this floor slab emits impact sound downstairs. In particular, the sound caused by the vibration of this floor slab is caused by the vibration of the concrete floor slab. Since the natural vibration frequency of is in the low frequency range, if you look at the sound pressure level of floor impact sound by frequency, the sound pressure in the low frequency range is high, and the floor WJi impact sound in the ^ frequency range is not audible. This is due to the fact that sounds in the low frequency range are heard louder, and as a result, the overall sound insulation performance deteriorates.

The present invention has been made in view of the above problems, and its purpose is to provide a floor material with a vibration absorbing structure that utilizes the principle of a dynamic vibration absorber, thereby reducing weight impact without increasing the floor weight. The objective is to reduce the vibration of the floor slab caused by the vibration of the floor slab, thereby reducing floor impact noise.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the solving means of the present invention includes a hollow panel having a hollow part, and a structure in which the hollow panel is filled and fixed as a vibration-proof flooring material. The structure includes an elastic body made of rubber or foamed plastic, etc., which has a smaller spring constant than the hollow panel, and a high-density composite body made of metal, mineral, etc. contained in the elastic body.

(Function) With the above structure, in the vibration-proof flooring material of the present invention, when an impact force is applied to the floor surface, the hollow panel deforms and tries to bend and vibrate, but the vibration is contained in the elastic body of the hollow part of the panel. The elastic body is fI-L.

Therefore, when the impact force is applied, the high W5 acid body described above tries to stay in the same position due to inertia and deforms the elastic body surrounding it, and in order to cause this deformation, the impact force is applied. As a result, the impact force acting directly on the subfloor becomes smaller.
Vibrations in the subfloor are reduced and shortened.

In addition, the threads between the elastic body and the high-density body act as a dynamic vibration absorber against panel vibration (therefore, the spring constant of the elastic body and the mass of the high-density body are appropriately selected, and the high-density body By adjusting the natural vibration frequency of the panel in advance, it is possible to configure a resonance system in a predetermined frequency range and absorb the vibration-L energy of the panel. Therefore, by absorbing this vibration, it is possible to effectively reduce impact sound. can be reduced to 1.
It is preferable to mix elastic bodies with uniform spring constants or high-density bodies with different masses in one panel, since vibrations of multiple frequencies can be absorbed simultaneously.

(First Embodiment) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows a floating floor +14 structure using vibration-proof flooring material A according to the first embodiment of the present invention. In the figure, reference numeral 1 denotes a subfloor made of a concrete slab or the like, and a glass wool mat 2 is placed on the subfloor 1 as a cushioning material.
A plurality of anti-vibration flooring materials A and Ah are placed on the glass wool mat 2.
<They are connected to each other and stretched, and the flooring material △1
- floor finishing materials 3 such as carpeters 1 to 6Q are arranged to form a floating floor structure.

The above-mentioned vibration-proof flooring material A is, as shown in detail in FIG.
A hollow panel 5 in which hollow parts 4 penetrating the inside are formed in horizontal rows, an elastic body 6 filled and fixed in the hollow part 4 of the hollow panel 5, and an elastic body 6 embedded in the elastic body 6 and enclosed therein. It is constituted by a high-degree body 7 of an appropriately shaped shape. The L hollow panel 5 is made of cement, lucium silicate, ALC,
Extrusion-molded panel J: Rinaru, which is formed by extrusion-molding 5 blue, wood chips, synthetic resin, etc., and has a hollow part 4 formed inside.

Further, the elastic body 6 is made of rubber, foamed plastic, various fibers, etc., and has a spring constant smaller than that of the material of the hollow panel 5. In addition, the high-density body 7 may be a metal (ridge, lead, etc.) or a mineral (¥4
7:i1 sand, etc.), etc., and the shape of the hole is a sphere, a cube such as a block, a plate-like body such as a square piece, or a columnar body such as a cylinder, and the elastic body 6
A form in which the elastic body 6 is discontinuously dispersed and contained along the hollow part 4, or a form in which it is made of a long material such as a rod or a strip and is continuously contained in the elastic body 6 along the hollow part 4. It will be arranged in

Therefore, when an impact force is applied to the floating floor structure configured in this way, the vibration-proof flooring material deforms and the vibration-proofing floor material A (hollow panel 5) tends to undergo bending vibration. However, in the vibration-proof flooring material A, the high-density body 7 is provided in the hollow part 4 of the hollow panel 5 and is enclosed in the elastic body 6.
Therefore, when the impact force acts, the high-density body 7 tries to stay in the same position due to inertia and deforms the elastic body 6 around it. When a part of the impact force is used to cause the deformation, the impact force directly acting on the floor substrate 1 becomes smaller, and when the vibration-proof flooring material A generates bending vibration due to the impact force,
While this vibration is occurring, the above action continues, and part of the energy due to the bending vibration of the vibration-proof flooring material A continues to be consumed by the displacement of the high-density body 7 and the deformation of the elastic body -〇-6. As a result, the amount of photographing of the vibration-proof flooring material A itself is reduced and shortened.

Moreover, since the high-density body 7 is enclosed in the elastic body 6 in the hollow part 4 of the hollow panel 5, the high-density body 7 and the high-density body 7 are Since the system with the body 7 forms a 5% ll vibration 1j system and works as a dynamic vibration absorber, the spring constant of the elastic body 6 is adjusted so that the ws dense body 7 resonates at the natural vibration frequency of the panel 5. By appropriately setting the mass of the high-density body 7, the panel 5
No. 1! This makes it possible to efficiently reduce the vibrations and reduce the amount of energy emitted by the vibrations of the subfloor.

Further, the elastic body 6 in the hollow part 4 of the hollow panel 5 may have a different spring constant, or the hollow part 4 may have a different spring constant as shown in FIG.
The high WIr* bodies 7 of 2 are mixed with different quality layers, or high-density bodies 7 of different quality layers are mixed in one hollow part 4 as shown by the imaginary line in the figure. , by mixing sub-vibration systems with different natural vibration frequencies in one hollow panel 5, it is possible to generate vibrations in the frequency range of 1000 yen.
If it is made to resonate, it is possible to absorb vibrations of multiple frequencies at the same time. Incidentally, light impact force such as the sound of footsteps can be easily absorbed by using a carpet, tatami, or the like as the floor finishing material 3.

Now, specifically, by extrusion molding, the specific gravity of the real part is 1.4.
Fiber-mixed cement with a thickness of 70 mm and a hollow rate of 50%.
A hollow panel made of $1 was created, and adhesive was applied to the surface of a soft urethane foam (20 times foamed cross section 80 x 44 mm) containing an iron rod (specific gravity 7.86, diameter 20 m + n) in the hollow part. It was later inserted to create anti-vibration flooring. This anti-vibration floor material is made of concrete slab (density rel 2300
kIj/yn", f'Jsu150+im, dimension 57
00x4675mm) -F with glass wool loose *'lA
(96h/1n', thickness 40IIITl) to create a floating floor;
When we measured the floor impact sound level from downstairs using a weight impact sound generator specified in 14.18, we found that the floor impact sound level was all (not noticeable, according to the standards of the Architectural Institute of Japan).
Achieved a sound insulation performance of 5 (special grade). On the other hand, for comparison, the same (through glass wool buffer =) concrete 1.(density 2300 kq/
A floating floor was made using the conventional wet method by pouring and molding a material (70mm thick, 70 mm thick), and the floor impact sound level of this was measured.
The sound insulation performance was rated L-50 (grade 1) by Jun Hayashi of the Architectural Institute of Japan. It can be seen that b 5 J is lower in the example of the present invention than in the conventional example, and a damped vibration damping effect can be obtained.

(Second Embodiment) FIG. 3 shows a floor structure using a vibration isolation floor divided by 4A' according to a second embodiment of the present invention, and the vibration isolation floor 1Δ' is as shown in FIG. , the hollow panel 5 has front and back surface materials 5a, 5a.
A hollow part 4 is formed in a lattice shape, connecting the spaces between the two with a large number of tab-like members 5b, and penetrating between the opposing sides of the hollow part 4. An elastic body 6 is inserted and fixed in the hollow part 4 of 5j, and the elastic body 6
Inside the body 6, a rod-shaped high-density body 7 is elastically supported so as to be movable. Furthermore, the end of the high-density body 7 protrudes from the end surface of the hollow panel 5, and the protruding end of the high-density body 7 is welded or bonded to the end of the high-density body 7 of the adjacent hollow panel 5. They are connected by a connecting body or the like.

In FIG. 3, numeral 10 is a rigid board stretched over the [vinyl] flooring material A, and the floor finishing material 3 consists of a floorboard and a carpet provided thereon.

In the case of this example, in particular, since the granite body 7 is connected to the high-density body 7 of the adjacent hollow panel 5 and made elongated, its natural vibration frequency shifts to the lower frequency side, so the panel 5 It is also possible to set the resonant frequency of the dynamic vibration absorber to a low frequency range below 201-IZ, which cannot be felt by the hearing, without increasing the size of the panel. It is possible to consume and absorb the vibration energy of the panel itself due to floor impact as extremely low frequency vibration energy. Furthermore, since the panel size can be small, the handling and workability of the panel 5 will not be degraded, and the construction can be carried out easily and at low cost.

(Modification) As shown in FIGS. 5 and 6, the hollow panel 5 is constructed by connecting the front and back face materials 5a, 5a with the crosspieces 5br, and forming the hollow portion 4 of the hollow panel 5.
are assembled panels formed in horizontal rows in one direction, and each rod-shaped high-density body 7 enclosed in the elastic body 6 in the hollow part 4 is connected to the high-density body 7 of another adjacent hollow panel 5. They may be connected only in one direction at their ends.

In this case, the surface material 5a of the assembled hollow panel 5 may be made of a wooden board such as plywood, particle board, fiberboard, or wood cement board, as shown in FIG. In addition to facilitating construction by hammering or the like, the flexural rigidity of the entire panel 5 may be increased by forming the crosspiece 5b from a metal shape material such as one channel or an FRP 111 shape material. Further, as shown in FIG. 10, a reinforcing plate 5 such as a metal plate or an FRP plate is provided on the surface of the wooden panel 5a.
C is integrally provided, and metal, FR is used as the crosspiece 5b.
The bending rigidity of the entire panel 5 may be increased by using a wooden crosspiece covered with a reinforcing material 5d such as P or plastic. When the bending rigidity of the entire hollow panel 5 is increased in this way, the bending deformation of the panel 5 due to the impact force is small and the impact force acts uniformly on the entire panel 5, and the high-density body 7 in the hollow part 4 is Since the vibration can be avoided not only at the excitation point but also uniformly throughout the panel 5, the high-density body inside the panel vibrates uniformly, and the vibration is damped more quickly. It is preferable.

In addition, the elastic body 6 is disposed continuously in the hollow part 4 of the hollow panel 5, and as shown in FIG. They may be arranged discontinuously along the hollow portion 4. in this case,
High W: Since the body is partially supported by an elastic body, the high-density body can sensitively absorb even a small impact force with just one vibration. Further, as shown in FIG. 7, a male part 5e is provided at one end of the hollow panel 5, and a female part 5f into which the female part 5e can fit is provided at the other end. The panels 5.5 can be easily and quickly joined together, and the hollow panels 5, 5 adjacent to each other can be easily and quickly joined together.
The high-density bodies 7, 7 may be connected via connecting fittings 8 to increase the rigidity of the entire floor surface and prevent the occurrence of uneven levels between the panels.

Furthermore, the high-density body 7 may be a strip-shaped plate-shaped body as shown in FIG. 8, in addition to a rod-shaped body. In this case, in addition to the connection method by welding, the ends of the bodies 7 can be polymerized together and connected by a simple method such as pol].

(Effects of the Invention) As explained above, according to the vibration-proof flooring material of the present invention, an elastic body containing a high-density body is provided in the hollow part of the panel, so that it acts as a dynamic vibration absorber. This allows the panel to effectively absorb vibrations caused by impact, thereby reducing the vibration of the entire panel.

In particular, since the vibration energy of the panel is absorbed by the high-density one-dimensional resonance, the sound emitted from the subfloor is reduced, and the propagation of the floor-first impact sound to the downstairs can be significantly reduced. J: Therefore, it is possible to provide a material suitable for flooring of high-rise buildings, which can easily and inexpensively prevent the propagation of floor impact to the lower floors without significantly increasing the floor load. can.

−16=

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention; FIG. 1 is an enlarged vertical cross-sectional view of a main part of the vibration-proof flooring material of the first embodiment, and FIG. 2 is a vertical cross-sectional view of the construction state of the second embodiment. Fig. 3 is a vertical cross-sectional view of the second embodiment;
The figure is a perspective view of the vibration-proof flooring material. FIG. 5 is a perspective view showing a modified example, and FIG. 6 is a partially cutaway perspective view of the vibration-proof flooring material. FIG. 7 and FIG. 8 are a sectional view and a partial perspective view showing other modifications, respectively. Figure 9 and 1
The Q diagrams are a cross-sectional view and a partially enlarged cross-sectional view showing a modified example, respectively. A, A'...Vibration-proof floor material, 4...Hollow part, 5...
Hollow panel, 6... elastic body, 7... high density body.

Claims (7)

[Claims] (1) A hollow panel having a hollow part, an elastic body made of rubber or foamed plastic, etc., which is filled and fixed in the hollow part and has a spring constant smaller than that of the hollow panel, and a metal, mineral, etc. contained in the elastic body. A vibration-proof flooring material characterized by comprising a high-density body consisting of: (2) The high-density body has an appropriately shaped cube, columnar body, plate-like body, etc., and is discontinuously dispersed and included in the elastic body. Shaking bed material. (3) The high-density body is made of a long material such as a rod shape or a strip shape,
Claim No. (
Vibration-proof flooring material described in section 1). (4) An anti-vibration floor according to claim (3), wherein the end of the high-density body made of elongated material protrudes from the end face of the hollow panel so as to be able to connect with the high-density body of another hollow panel. Material. (5) The hollow panel is an assembled panel in which the front and back materials are connected by crosspieces or block-shaped materials. The vibration-proof flooring material described in section 4). (6) The anti-vibration floor material according to claim (5), wherein the crosspiece is formed of a rigid profile such as metal or FRP. (7) The hollow panel is an extrusion-molded panel in which a hollow portion is formed by extrusion-molding cement or wood chips, etc. Claims (1), (2), (3), or The vibration-proof flooring material described in (4).