JPS6389777A - Vibrationproof floor material - Google Patents

Abstract

(57) [Abstract] 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 provides a vibration-proof floor for reducing the transmission of floor impact noises generated when children or the like jump on the floors of houses, especially apartment complexes, from being transmitted downstairs. It is related to materials.

(Prior Art) In recent years, floor impact noise from above floors in apartment complexes has become a major social problem. This floor impact sound is generated when the floor structure is vibrated by the impact caused by people walking or jumping, and when the vibration is captured, sound is emitted from the subfloor facing downstairs.

The above-mentioned floor impact sounds can be roughly divided into those caused by weight impacts such as footsteps, and those caused by weight impacts caused by children jumping up and down (impact force 387
5N). Of these, floor impact noise caused by light impact can be easily absorbed and alleviated by laying soft materials such as carpets and tatami mats on the floor surface.

Meanwhile, the floor due to weight impact! FI impact sound cannot be absorbed by surface materials such as carpets due to its large impact force.
Although a sufficient solution has not been found, as a measure to reduce the floor impact noise caused by this weight impact, it is possible to install [i] on the floor slab.
2. Description of the Related Art A floating floor structure in which floor panels are placed side by side with a material layer interposed therebetween, and a double floor structure in which floor panels are placed side by side through joists or support legs having rubber feet are known. The above-mentioned former floating floor structure consists of an upper floating floor layer (concrete thickness 50 vs.
It is a structure that reduces the impact force applied to the concrete slab by
Great sound reduction effect. The latter double floor structure is often adopted as a floor structure for gymnasiums, etc., but it is also possible to arrange a large floor joist through an elastic material such as rubber, and then install floor panels in parallel on top of it. Alternatively, support bolts with rubber feet are attached to the four corners of the floor panel to create a space between the floor slab and the floor panel, and the upper floor layer is separated from the floor slab. This reduces the transmission of body cylinder impact force.

(Problems to be Solved by the Invention) However, in both the conventional floating floor structure and double floor structure, when a child or the like receives a heavy impact such as jumping off a chair or table, the cushioning material undergoes compressive deformation. The reaction caused by the restoration causes the floor panels to jump up and amplify the bending vibrations, making the floor panel's turbulence louder.Especially, the low frequency sound range is not sufficiently reduced, and the sound insulation performance is L-55.
Or Shi-50 was the limit.

On the other hand, as a technique for reducing the jumping and bending movements caused by the reaction of the floor panel, as shown in FIG. It has been proposed that a steel plate f is attached to the lower surface of the floor panel through an elastic body e such as a foam sheet so that it can vibrate vertically, thereby configuring a dynamic vibration absorption system for the floor panel d (see Japanese Patent Laid-Open No. 187967/1983). ). This method utilizes the displacement caused by the deformation of the floor panel d when it receives an IE impact force, and moves the absorbing and absorbing body such as the steel plate f in one stroke, thereby deforming the floor panel d itself. A part of the vibration is transferred to another approximately vJ system and consumed.

However, in this proposal, when the body cylinder impact force is applied, the vibration of the dynamic vibration absorption system is started only by the displacement of the floor panel d, so the rib absorption is particularly difficult for rigid floor panels with small deformation. There is a drawback that the displacement of the photographing object is small, the energy absorbed is small, the vibration system is not sufficiently developed t7, and the absorption and agitation effect is small.

The present invention has been made in view of these points, and its purpose is to absorb flooring materials using the principle of a dynamic vibration absorber.
In addition to having a dragon structure, this dynamic vibration absorption system is started using the air pressure on the bottom surface of the floor panel caused by the deformation of the floor panel in addition to the displacement of the floor panel itself. The purpose is to provide a sufficient vibration system 1q to effectively exhibit a vibration absorption effect, thereby effectively reducing floor impact noise caused by weight impact.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a dynamic vibration absorption system in the hollow part of the hollow panel, and the lower surface of the floor panel that is generated when a floor impact force is applied to the hollow part. Compressed air is taken in from the side, and the dynamic vibration absorption system is activated by the action of both this air pressure and the displacement of the floor panel.

Specifically, the solution taken by the present invention is that a high-density jet body made of metal or the like is supported in the hollow part of a floor panel through an elastic body so as to be able to vibrate vertically. A ventilation opening is provided on the lower surface of the hollow part so that the compressed air generated below the floor panel when the body cylinder percussion force acts on the high-density face piece or elastic body in the hollow part.

Here, the ventilation opening may be formed so as to reach the surface of the body so that the air pressure acts directly on the high-density body to displace the high-density body, or the air pressure may be applied to the elastic body. Alternatively, the elastic body may be formed so as to act on the elastic body, and the displacement of the elastic body may be increased by deforming the elastic body using air pressure.

(Function) With the above-described configuration, in the vibration-proof flooring material of the present invention, when an impact force is applied to the floor surface, the floor panel deforms and attempts to perform bending photography. However, since a high-density body is supported in the hollow part of the floor panel through an elastic body so that it can vibrate vertically, the floor panel may momentarily sink downward when the impact force is applied. At the same time, the high-density body in the hollow part of the panel tries to stay in the same position due to inertia, deforming the elastic body in the hollow part and trying to move upward relative to the floor panel. At the same time, the air on the bottom side of the floor panel is compressed as the floor panel bends, sinks, etc., and this compressed air flows into the hollow part through the ventilation opening on the bottom of the floor panel, and this air pressure This causes a high-density body to be violently vibrated and an elastic body to be greatly deformed. In other words, when the body cylinder percussion force is applied, the effect of both this air pressure and the displacement of the floor panel is high! The 5-degree body (that is, the dynamic absorbing body) starts vibrating with a large amplitude and immediately and effectively consumes the impact energy, absorbing and attenuating it, so that the impact force acting directly on the subfloor is reduced and the impact energy on the subfloor is reduced. Vibration is small and shortened.

Furthermore, since the system of the elastic body and the high-density body effectively acts as a dynamic vibration absorber against panel vibration due to the action of the air pressure, the spring constant of the elastic body and the mass of the high-density body should be selected appropriately. By adjusting the natural imaging frequency of the high-density body in advance, a resonant system in a predetermined frequency range is constructed, and by absorbing this vibration, the impact sound transmitted through the flooring and emitted downstairs can be effectively reduced. Can be done. Also, do you have elastic bodies with different spring constants or different masses in one panel? 3
It is preferable to mix the Mitsubun style as it can absorb vibrations of multiple frequencies at the same time.

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

FIG. 2 shows a floating floor structure using vibration-proof floor 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. A glass wool mat 2 is placed on the subfloor 1 as a cushioning material, and a plurality of anti-vibration flooring materials are placed on the glass wool mat 2. A and A are connected to each other and stretched, and a floor finishing material 3 such as a carpet is placed on the anti-corrosion flooring material A to form a floating floor structure.

The above-mentioned vibration-proof flooring material A is, as shown in detail in FIG.
A hollow floor panel 5 in which hollow parts 4 penetrating through the interior are formed in horizontal rows, an elastic body 6 filled and fixed in the hollow part 4 of the floor panel 5, and an elastic body 6 embedded in the elastic body 6. The lower surface of the floor panel 5 has a high-density body 7 that is internally supported so as to be able to vibrate vertically. Ventilation openings 8 in the form of circular holes or slots reaching the surface of the density body 7 are provided to take in the compressed air generated within the glass wool mat 2 below the floor panel 5 when a floor impact force is applied. It is designed to act on the body 7.

The floor panel 5 is made of cement, calcium silicate, etc.
C1 plaster, wood chips, synthetic resin, etc. are extruded and molded.
It consists of an extruded hollow panel with a hollow part 4 formed inside. Further, the elastic body 6 is made of an elastic material having a spring constant smaller than that of the material of the floor panel 5, such as rubber, foamed plastic, or various fibers. The high-density body 7 is made of metal (iron, lead, etc.), mineral (rock, sand, etc.), cement, etc., and its shape is spherical, cubic such as a block, or plate-shaped such as a square piece. The elastic body 6 is made of a columnar body such as a body or a cylinder, and is discontinuously dispersed and supported within the elastic body 6 along the hollow part 4, or is made of a long material such as a rod shape or a strip shape. It is disposed in such a manner that it is continuously enclosed and supported along the hollow part 4.

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 flooring material A (floor panel 5) tends to bend and perform photographing. However, in the vibration-proof flooring material A, the high-density body 7 is supported in the hollow part 4 of the floor panel 5 via the elastic body 6 so as to be able to vibrate vertically, and can move via the elastic body 6. When an impact force is applied, the 1.5 degree high body 7 tries to stay in the same position due to inertia, deforms the elastic body 6 around it, and vibrates upward relative to the floor panel 5. At the same time, the glass wool mat 2 below the floor panel 5 is compressed and deformed due to the deformation of the floor panel 5, and this compression deformation compresses the air inside the glass wool mat 2, and this compressed air is instantaneously released into the ventilation opening 8. High-density body 7 in hollow part 4 through
, and further images the coughing high-density body 7. In other words, when the floor impact force is applied, the high-density body 7 starts photographing with a violent and large amplitude due to both the instantaneous action of this air pressure and the instantaneous displacement action of the floor panel 5. At the same time as the floor impact force acts, the impact energy is quickly and effectively absorbed and attenuated. As a result, the vibration of the vibration-proof floor material A itself is reduced and shortened.

Moreover, since the high-density body 7 is provided in the hollow part 4 of the floor panel 5 and supported by the elastic body 6 so as to be able to vibrate vertically, the 1! The system of the elastic body 6 and the high-density body 7 constitutes a D1 vibration system for the tlJ (main camera system), and together with the action of air pressure through the ventilation opening 8, a dynamic vibration absorber is created. Therefore, by appropriately setting the spring constant of the elastic body 6 and the mass of the B-density body 7 so that the high-density body 7 resonates at the natural vibration frequency of the panel 5, the vibration of the floor panel 5 can be efficiently reduced. By attenuating well, it is possible to reduce the sound emitted by photographing the subfloor.

Furthermore, the elastic bodies 6 in the hollow part 4 of the floor panel 5 may have different spring constants, the high-density bodies 7 in the hollow part 4 may have different masses, or the elastic bodies 6 in the hollow part 4 may have different masses. If the high-density body 7 is made to resonate in a wide frequency range by mixing sub-vibration systems with different natural vibration frequencies in one floor panel 5, such as by mixing the high-density body 7, It is also possible to absorb images 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.
A hollow panel made of fiber-containing cement material with a thickness of 70 mm and a hollow ratio of 50% was created, and an iron rod (ratio!
! 7.86. After applying adhesive to the surface of a soft urethane foam (20 times foam cross section 8° x 44IwI!+) containing a 20x foam (diameter 20 rm), it was inserted, and vent holes were opened at 20011111 pitch on the bottom of the panel to reach the surface of the iron bar. We created anti-vibration flooring materials. This anti-vibration floor material is used as a concrete slab (density 1fi 2300 kg/i, thickness 150 x 1 dimension 5).
Glass wool cushioning material (96
kIi/m', thickness 50 nnw) to create a floating floor, which was then additionally photographed using a weight impact sound generator specified in JIS-A1418, and the sound level of floor W7J was raised from downstairs. When we measured the floor impact noise, we found that the sound insulation performance of L-45 (special grade) according to the standards of the Architectural Institute of Japan was (q).For comparison, we also installed a glass wool buffer on the concrete slab above. A floating floor is created by placing a floor panel consisting of a dynamic vibration absorption system and a hollow panel without ventilation openings through the material, and the body cylinder I of this is placed.
! The result of measuring the single sound level was that the floor impact sound was worrisome and had a -55''!X sound performance (class 2) according to the Architectural Institute of Japan standards. It can be seen that the floor impact sound is reduced by 10 dB compared to the conventional example, and an excellent vibration damping effect can be obtained.

(Other Examples) FIG. 3 shows a floor structure using a vibration-proof flooring material A' according to a second example of the present invention, and the vibration-proofing flooring material A' is shown in FIGS. As shown in FIG. ! The floor panel 5 consists of assembled hollow panels connected by two crosspieces 5b, in which hollow parts 4 passing between the sides are formed in horizontal rows in one direction. An elastic body 6 is fixed to the lower half of the hollow part 4, and a plurality of strip-shaped high-density bodies 7 are discontinuously supported on the elastic body 6 so as to be able to vibrate vertically. It is fixed in a dispersed manner. In the case of this example, as in the first example, the high-density body 7 is started largely and effectively by the action of both the displacement of the floor panel 5 and the air pressure when the floor impact force is applied. Of course, since a plurality of high-density bodies 7 are distributed and provided, each high-density body 7 responds sensitively and vibrates even to a not-so-large impact force, and has a vibration absorption effect even for a small impact force. can demonstrate.

The sixth factor shows a floating floor structure using the vibration-proof flooring material A'' according to the third embodiment of the present invention, and the vibration-proofing flooring material A/l has a floor panel 5 as shown in FIG. Consisting of assembled hollow panels, a plurality of supports 9, 9... are placed on a glass wool mat 2.
It is placed with an air layer 1o maintained between it and the glass wool mat 2 via the glass wool mat 2. Further, in each hollow part 4 of the floor panel 5, the state in which the high-density body 7 is placed and fixed on the elastic body 6 and the state in which it is fixed under the elastic body 6 are alternately repeated, and the high-density body 7 is vibrated vertically. Possibly supported. Further, on the lower surface of the floor panel 5, a ventilation opening 8 reaching the surface of the high-density body 7 is provided at a portion corresponding to the hollow portion 4 where the high-density body 7 is fixed onto the elastic body 6; A ventilation opening 8 that opens into the hollow part 4 is located at a portion corresponding to the hollow part where the part 7 is volumetrically supported through the elastic body 6.
is provided, and the elastic body 6 has a hollow portion 6a inside thereof.
is formed.

In this example, when floor impact force is applied, due to the deformation of the floor panel 5 and the compressive deformation of the cushioning material (glass wool mat 2),
The air in the air layer 10 below the floor panel 5 and the air in the cushioning material are compressed, and this compressed air acts on the dense body 7 directly through the ventilation opening 8 or through the hollow part 4. The high-density body 7 fixed on the elastic body 6 can be effectively started by both the air pressure and the displacement of the floor panel 5, as described above. On the other hand, even if the high-density body 7 is moved through the elastic body 6, it is similarly moved significantly upward by the action of both the air pressure and the displacement of the floor panel 5, but in this case, the elastic body 6 By providing the hollow portion 6a inside the engine, the engine can be moved with relatively little resistance, and the engine can be started with a large amplitude. When provided on both the upper and lower sides of the hollow part 4 of the floor panel 5 in this way, the vibrations of the upper and lower surface materials 5a, 5a of the floor panel 5 are simultaneously absorbed, and the imaging of the floor panel 5 is absorbed in a short time. Floor impact noise can be further reduced.

(Modification) The assembled hollow panel as the floor panel 5 may be formed by connecting the front and back surface materials with a large number of block-shaped members to form a hollow portion in a lattice shape.

Moreover, the high-density body 7 has its end projected from the end of the floor panel 5, and this protruding end is connected to the end of the high-density body 7 of the adjacent floor panel 5 by welding or other fixing means. or the 8th
As shown in the figure, a high-density body 7.7 of adjacent floor panels 5, 5
It is also possible to make it longer by connecting the ends thereof with a connecting fitting 11. In this case, if a plurality of ventilation openings 8 are provided in correspondence with the high-density body 7, even the long high-density body 7 can be vibrated vertically by the action of air pressure. By increasing the length of this high-density body 7, its natural vibration frequency shifts to the lower frequency side, so that the floor panel 5
It is also possible to set the resonant frequency of the dynamic vibration absorber to a low frequency range of 20H7 or less, 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 body blows as frequency vibration energy.

Furthermore, in the case of an assembled hollow panel, as shown in Fig. 9, by using a wooden board such as plywood, particle board, fiberboard, or wood cement board as the facing material 5a, it is possible to easily nail the floor finishing material to the upper surface. In addition to making construction easier, the crosspiece 5b can be
RP I! ! The bending rigidity of the entire floor panel 5 may be increased by forming the floor panel 5 with a ll-shaped member. Also, as shown in Figure 10,
High above the lower surface of the hollow part 4 of the floor panel 5! The 51'i body 7 is fixedly supported via an elastic body 6 so as to be able to vibrate vertically, and a ventilation opening 8 reaching the surface of the high-density body 7 is provided on the lower surface of the floor panel 5, and the upper surface of the floor panel 5 is Also hollow part 4
An exhaust hole 12 may be provided which opens to the inside.

In this case, when the floor impact force acts, the high-density body 7
Even if the air in the space above the high-density body 7 in the hollow part 4 is compressed when starting to shoot upward due to the effects of both the displacement of the air and the air pressure through the ventilation opening 8 from below,
The compressed air is instantly exhausted to the outside from the upper exhaust hole 12, so the above-mentioned high! The five-degree body 7 can be started smoothly without resistance, and the damping effect of the dynamic vibration absorption system can be enhanced.

In addition, as shown in FIG. 11, a reinforcing plate 5C such as a metal plate or an FRP plate is integrally provided on the surface of the wooden panel 5a, and a reinforcing material 5d such as metal, FRP, or plastic is coated as a crosspiece 5b. The bending rigidity of the entire floor panel 5 may be increased by using wooden crosspieces. In this way, the floor panel 5
If the overall bending rigidity is increased, the floor panel 5 due to impact force
The bending deformation of is reduced, the impact force acts uniformly on the entire floor panel 5, the air below the floor panel 5 is compressed uniformly, and the high-density body 7 in the hollow part 4 is moved directly below the point of excitation. Not only the ventilation openings 8 but also the ventilation openings 8 of the entire lower surface of the floor panel 5.
Since each high-density body 7 can be vibrated by applying air pressure evenly to the panels, the vibrations of the panel itself can be damped more quickly, which is preferable.

In addition, the elastic body 6 is disposed continuously in the hollow part 4 of the floor panel 5, and as shown in FIG. They may be arranged discontinuously along the section 4. In this case, since the high-density body is partially supported by an elastic body, the high-density body can be sensitively captured even with a small impact force, and can absorb even a small impact force. In addition, as shown in FIG. 8, a male part 5e is provided at one end of the floor panel 5 facing each other, and a female part 5f into which the male part 5e can fit is provided at the other end. The panels 5, 5 may be joined easily and quickly.

Note that the ventilation opening 8 does not necessarily have to be provided at a depth that reaches the high-density body, but may be provided in the lower surface of the floor panel 5 so as to open into the hollow part 4, as shown in FIG. By covering the upper surface of the part 8 with an elastic body, compressed air generated below the floor panel 5 is applied to the elastic body 6 when a floor impact force is applied, and the elastic body 6 is instantaneously compressed and deformed by this air pressure.
The amount of displacement of the high-density body 7 may be increased.

(Effects of the Invention) As explained above, according to the vibration-proof flooring material of the present invention, a dynamic vibration-absorbing system is constructed by supporting a high-density body in the hollow part of the floor panel through an elastic body so as to be able to vibrate vertically. , and a ventilation opening is provided on the lower surface of the floor panel, and the compressed air generated below the floor panel is taken into the hollow part, and the dynamic vibration absorption system is started by the action of both this air pressure and the displacement of the floor panel. As a result, the response of the dynamic vibration absorption system is fast, and the vibration of the floor panel caused by the floor impact force can be instantly and effectively absorbed, thereby making it possible to shorten and reduce the vibration of the entire floor panel.

In particular, since the imaging energy of the floor panel is absorbed by the resonance of the high-density body, the sound emitted from the subfloor is reduced, and the propagation of floor impact sound downstairs can be significantly reduced. Therefore, the propagation of floor impact sound to the lower floors can be easily and inexpensively prevented, and it is possible to provide a flooring material suitable for the second floor of a nine-story building or a house.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is an enlarged vertical cross-sectional view of the main part of the vibration-proof flooring material of the first embodiment, FIG. 2 is a vertical cross-sectional view of its construction state, and FIGS. The figure shows the second embodiment, Fig. 3 is a perspective view of its construction state, Fig. 4 is a vertical sectional view of the vibration-proof flooring, and Fig. 5 is a sectional view taken along the line Vl-Vl in Fig. 4. . 6 and 7 show a third embodiment, FIG. 6 is a vertical cross-sectional view of the construction state, and FIG. 7 is an enlarged vertical cross-sectional view of the main part of the vibration-proof flooring material. FIGS. 8 to 10 are sectional views showing other modified examples, and FIG. 11 is a partially enlarged sectional view showing one modified example. FIG. 12 is a sectional view showing a conventional example. A, A', A''...Vibration-proof floor material, 4...Hollow part, 5.
...Floor panel, 6...Elastic body, 7...High density body, 8
...Vent opening. Patent Applicant Daiken Kogyo Co., Ltd. Agent Patent Attorney Former 1) Hongu Diagram 2 Procedure Nei City Authorization (Spontaneous)

Claims (5)

[Claims] (1) A high-density body made of metal or the like is supported in the hollow part of a floor panel with a hollow part through an elastic body so that it can vibrate vertically, and a floor impact force acts on the lower surface of the floor panel. A vibration-proof flooring material characterized in that a ventilation opening is provided in the hollow part so that compressed air generated below the floor panel acts on the high-density body or the elastic body in the hollow part. (2) The vibration-proof flooring material according to claim (1), wherein the ventilation opening is formed to penetrate through the elastic body and reach the surface of the high-density body. (3) The high-density body has an appropriately shaped cube, columnar body, plate-like body, etc., and is supported discontinuously and dispersedly inside the elastic body, and the ventilation openings are provided in the elastic body. The vibration-proof flooring material according to claim (1), which is provided at a depth that reaches the inside. (4) The high-density body is made of a long material such as a rod shape or a strip shape,
The vibration-proof flooring according to claim 1, wherein the vibration-proof flooring is partially supported within the hollow portion by an elastic body, and the ventilation opening is provided at a depth that reaches the inside of the elastic body. (5) The high-density body is fixed to the lower surface of the hollow portion via an elastic body, and the ventilation opening is provided at a depth that penetrates the elastic body to reach the high-density body, and The vibration-proof flooring material according to claim 1, wherein an exhaust hole penetrating the top surface of the panel is provided on the inner surface of the hollow portion above the body.