JP2000144999A - Sound insulation floor structure and sound insulation floor material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound insulation structure that can reduce the weight of a floor and impact sound of a floor, and be executed readily, and also minimize the increase of costs with no design change at all on a floor frame. SOLUTION: The sound insulation floor structure 1 is furnished with a plate-like waste adhesive material 2 to be a floor surface forming underlying material and a floor plate 3 for supporting the plate-like waste adhesive material 2. The sound insulation floor structure 1 includes a plurality of sound insulation materials 4 interposed between the plate-like waste material 2 and the floor plate 3. Each sound insulation floor material 4 is set apart from one another, and a space 5 is defined between each sound insulation floor material 4. Also, each sound insulation floor material 4 is provided with a lower side plate-like body 6, impact absorption materials 7a, 7b, and an upper side plate-like body 8. The lower side plate-like body 6 is fastened on the floor plate 3 by a screw 9, and the upper side plate-like body 8 is fastened below the plate-like waste adhesive material 2 by screws 10. The impact absorption materials 7a, 7b are interposed between the lower side plate-like body 6 and the upper side plate-like body 8. The sound insulation floor structure 1 having a vertical maximum instantaneous displacement of the plate-like waste adhesive material 2 in the range of 10 mm or less by the impact of a bang machine in accordance with JIS-A-1418, and a floor is formed on the sound insulation floor structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure for preventing a heavy floor impact sound of a building, and more particularly to a structure for absorbing and relaxing a floor impact force.

[0002]

2. Description of the Related Art There have been many demands for reduction of floor impact noise of buildings, and among them, lightweight floor impact noise, which can be improved by relatively improving the floor surface material, has been introduced from various industries and has been excellent. The results have been obtained, and now sound-insulating floors are not only widely known, but are in fact widespread in practice.

On the other hand, measures against heavy floor impact noise have been widely used as a common sense in rigid buildings such as RC structures, which can increase the rigidity of columns and beams and increase the thickness of floor slabs. However, in general detached houses and low-rise apartment houses, since flexible structures are the mainstream, the above-mentioned method is required to increase the rigidity of columns and beams, increase the cost required for increasing the weight of the floor, so it is not widely used. Not reached.

[0004]

SUMMARY OF THE INVENTION The present inventor has proposed that the floor itself,
Various soundproofing measures were considered, such as the method of supporting and fixing the floor, the use of the floor / ceiling space, the method of supporting the ceiling, and the improvement of the ceiling itself. As a result, it was clarified that the floor impact noise was reduced by absorbing and relaxing the excitation force of the floor impact source.

[0005] On the other hand, absorbing and relaxing the exciting force of a floor impact source has not been conventionally attempted. The main cause is that a tire is used as a pseudo floor impact source, and the tire has a sufficiently soft spring constant (about 1.7 × 10 ⁵ N / m). This is because a certain impact force characteristic is exhibited irrespective of this. Further, the excitation force of the tire is considered to have little effect even if the excitation force is reduced because the operation duration is extremely long.

[0006] In such a conventional technique, the heavy floor impact sound L _H- 55 is not sufficiently solved in a flexible structure in which a detached house or a low-rise apartment house is the mainstream in terms of cost and practicality. The emergence of a floor structure that is satisfactory in terms of practicality, including cost, has been awaited.

The present invention achieves a heavy floor impact sound L _H -55 by absorbing and relaxing the exciting force of the floor impact source, can be easily constructed, and hardly involves a design change of the floor frame.
It is an object of the present invention to obtain a sound-insulating floor structure that can minimize cost increase.

[0008]

According to the present invention, there is provided a sound-insulating floor structure which comprises a plate-like discarded material serving as a floor surface forming base and a floor plate for supporting the plate-shaped discarded material, whereby floor impact noise is reduced. There, a plurality of soundproof flooring material is disposed between the plate-like laminating material and the floorboard, when viewing the soundproofing floor structure in a longitudinal section, each soundproofing flooring material is separated from each other, A space is provided between each of the soundproofing floor materials, each of the soundproofing flooring materials includes a lower plate-like body, a shock absorbing material, and an upper plate-like body, and the lower plate-like body is above the floorboard. Is provided, the upper plate-shaped body is provided under the plate-shaped scraping material, the shock absorbing material is disposed between the lower plate-shaped body and the upper plate-shaped body, The maximum instantaneous displacement in the vertical direction of the discarded material is 10 mm due to the impact of a bang machine defined in JIS-A-1418. Is an internal, but according to the sound-insulating floor members used to applying a sound-insulating floor structure and according insulating floor structure.

The present inventor has studied a structure for absorbing and relaxing the exciting force of a floor impact source. As a result, the inventor
By installing a soundproof flooring material between the existing floorboard and the plate-like disposable material that actively allows the deformation of the plate-like disposable material that forms the floor, it is possible to significantly reduce the heavy floor impact sound. The present invention was completed by ascertaining and repeating many experiments.

According to the present invention, a plurality of sound-insulating floor materials are provided at a distance between a plate-shaped waste material serving as a base for forming a floor and a floor plate, and these sound-insulating floor materials absorb and reduce the floor impact force. In the space between each sound-insulating flooring, the deformation of the plate-like laminating material itself, which receives the impact force directly, reduces the transmission of the excitation force to the flooring and significantly reduces the sound radiation from the flooring. Things.

Since the plate-shaped scraping material near the floor surface is in direct contact with a decorative plywood or the like on the floor surface, a structure that actively allows deformation of the plate-shaped scraping material has not been used. If the floor surface is deformed, an uncomfortable feeling is generated when walking on the floor surface, and a structure or the like installed on the floor surface becomes unstable.

However, according to the research of the present inventors, JIS
-The maximum instantaneous displacement in the vertical direction of the discarded material caused by the impact of the bang machine specified in A-1418 is 10 m.
It was found that when the distance was within m, uncomfortable feeling during walking did not become a problem, and the heavy floor impact sound could be remarkably improved.

[0013] The soundproof flooring material according to the present invention, by itself,
Absorbs and reduces the impact of the floor. This soundproof flooring has a lower plate-like body, a shock absorber, and an upper plate-like body as essential components. The lower plate-like body is firmly fixed to the floor plate and can support the shock absorbing material. The floor plate according to the present invention is an ALC plate supported by beams or body gaps, a PC plate, a wooden floor panel supported by beams or joists, or the like made of a hollow extruded cement plate. It is a base material that supports a plate-shaped waste material.

Further, in the present invention, the upper plate-like body is smaller than the plate-like laminating material, is less likely to be deformed, and receives the impact force of the floor directly. By doing so, there is a role to make the amount of deformation of the plate-shaped discard material constant. The deformation generated in this way is absorbed and reduced by the shock absorbing material on the lower plate.

In the present invention, a plurality of such sound-insulating floor members are used, and these sound-insulating floor members are separated from each other to provide a space between the sound-insulating floor members. In such a floor structure, a large impact force applied to the floor is dispersed and absorbed by the separated sound-insulating floor members, and deformation of the plate-like laminating material is allowed in a space provided between the sound-insulating floor members. Since the vibration itself of the plate-shaped material is also easily attenuated, the displacement amount and the noise can be reduced.

In the sound-insulating floor structure of the present invention, a plurality of sound-insulating floor materials are provided apart from each other as a floor-forming base material and a floor plate, and the floor of the floor is provided by the sound-insulating floor materials and the space therebetween. By absorbing and relaxing the impact force, low-frequency noise generated from the floorboard can be significantly reduced.

As described above, according to the present invention, it is not necessary to increase the rigidity of the structure of the building itself or to increase the floor rigidity or the floor weight. Particularly suitable for apartment houses.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of a soundproof floor structure according to an example of the present invention. FIG. 2 is a side view of an example of the soundproof flooring according to the present invention, and FIG. 3 is a plan view of the soundproofing flooring of FIG. 2. FIG.
FIG. 19 to FIG. 19 are side views or plan views of another example of the soundproof flooring material according to the present invention.

As shown in FIG. 1, a soundproof floor structure 1 according to an embodiment of the present invention includes a plate-like discarded material 2 serving as a floor surface forming base and a floor plate 3 for supporting the plate-shaped discarded material 2. This soundproof floor structure 1
In the example, a plurality of soundproof flooring materials 4 are arranged between the plate-like waste material 2 and the floorboard 3. Each soundproof flooring 4 is separated from each other,
A space 5 is provided between the soundproof floor members 4. Each soundproofing floor member 4 includes a lower plate-shaped body 6, impact absorbing materials 7a and 7b, and an upper plate-shaped body 8. The lower plate-like body 6 is fixed on the floor plate 3 with screws 9, and the upper plate-like body 8 is fixed below the plate-like laminating material 2 with screws 10. Shock absorbing material 7a,
7 b is disposed between the lower plate-like body 6 and the upper plate-like body 8. In this soundproof floor structure 1, the maximum instantaneous displacement in the vertical direction of the plate-like discarded material 2 due to the impact of a bang machine defined in JIS-A-1418 is within 10 mm. It is formed.

Although not particularly shown in FIG. 1, in the present invention, a plurality of floor panels made of a floor slab, a wooden floor panel, or the like can be used as the floor plate 3. In this case, at least two floor panels are connected by the lower plate-like body 6 as shown in FIG. Then, each floor panel can be firmly connected and integrated. The integrated panel thus formed has a larger area and a greater weight than the individual floor panels, and prevents large local displacement of the floor panels when subjected to a floor impact force. As a result, the amount of displacement is reduced, and the amount of vibration is significantly reduced.

[0021] Thus, when connecting the floor comprising a plurality of floor panels, per surface area of 1 m ² of the floor plate, the lower plate-shaped body is fixed on the surface area of 0.05m ² ~0.8m ² floorboards Is preferred. When the lower plate-shaped body occupies the area in this range, a plurality of floor panels can be fixed and the soundproof performance can be improved.

In the present invention, as shown in FIG. 1, and more specifically, FIGS. 2 and 3, the upper plate 8 and the lower plate 6 of the soundproof floor member 4 are made of a plurality of prismatic shock absorbing members. It is preferable that each of the shock absorbing members 7a and 7b is spaced apart from each other, sandwiching 7a and 7b, and that a space 12 is formed between each of the shock absorbing members. Such a space allows the upper plate to be deformed, and functions to attenuate the vibration of the upper plate due to an impact from the floor. Note that, in the soundproof flooring 4 of this example, the upper plate-like body 8 is set slightly smaller than the lower plate-like body 6,
Each of the shock absorbing members 7a and 7b is constituted by one pair, and the lower plate-shaped body 6 is provided with a hole 13 for a screw.

In the present invention, various types of soundproofing flooring materials can be used, in addition to the soundproofing flooring material 4 shown in FIGS. In particular, the number of shock absorbing materials used in the present invention may be one per soundproof flooring material.

In the present invention, the side view of FIG.
The soundproof flooring of the example as shown in the plan view of FIG. As shown in FIG. 4, a viscoelastic body 15 as a shock absorbing material and a fibrous material as a shock absorbing material are provided between the upper plate 8 and the lower plate 16 are provided in a stacked manner in the height direction. FIG.
As shown in the figure, five shock absorbers 1
5 are provided at the four corners and the center, on which an upper plate-like body 8 is provided slightly smaller than the lower plate-like body 6.

As described above, according to the present invention, at least one of the upper and lower surfaces of the upper plate-like body is provided with at least one kind of impact force-mitigating auxiliary material selected from the group consisting of fibrous materials, foams, and porous materials. Can be provided. Such a shock-force-mitigating auxiliary material can reinforce the shock-absorbing / mitigating ability of the shock-absorbing material, and is extremely effective in absorbing vibration and preventing generation of noise.

In the present invention, the side view of FIG.
Can be used. As shown in FIG. 6, in the soundproof flooring material 17 of this example, a layered fibrous material 18 as an impact-mitigating auxiliary material is mounted on the upper surface of the upper plate-shaped member 8. The packing material 19 is provided in a layer on the lower surface of the upper plate-shaped body 8.
A spring 20 as a shock absorbing material is provided between the
And a viscoelastic body 21 having a height lower than that of the spring 20. The upper plate 8 is supported by the spring 20.

In the soundproof flooring 17 of this example, as shown in FIG. 7, four springs 20 are provided at four corners of the soundproofing flooring 17, and a total of five A plurality of prismatic viscoelastic bodies 21 are provided, and a spring 20 and a viscoelastic body 21 are provided on the same surface as a shock absorbing material.

As described above, the shock absorbing material according to the present invention can be composed of a compression spring and a viscoelastic body made of at least one material selected from the group consisting of metal and plastic. In this case, it is preferable that the compression deformation position of the compression spring be kept higher than the compression limit position of the compression spring when the compression spring and the viscoelastic body are deformed when an impact is applied to the plate-shaped waste material. This is to prevent the compression spring from sticking to the upper plate-shaped member or the lower plate-shaped member.

Further, according to the present invention, as shown in FIGS. 6 and 7, at least one of the surface of the lower plate-shaped member in contact with the floor plate and the surface of the lower plate-shaped member in contact with the shock absorber is provided with rubber or foam. And at least one selected from the group consisting of fibrous materials
Some kind of cushioning material can be provided. Since such a cushioning material makes direct contact between the floor plate and the lower plate-like body or the shock absorbing material, there is a meaning that such a situation can be avoided when abnormal noise is generated. Examples of such a cushioning material include felt, nonwoven fabric, rubber, plastic sheet, foam sheet, cork and the like.

In the present invention, as shown in the examples of FIGS. 6 and 7, the soundproof flooring member 17 includes at least two types of shock absorbing members 20 and 21. A gap 22 can be formed between the other shock absorbing member 21 and the upper plate-shaped body 8. Such a shock absorber having a two-stage structure can absorb and reduce the floor impact force in a stepwise manner, and can further reduce the displacement while extending the duration. Due to the different height of the shock absorber, the high shock absorber is deformed by the impact, and the shock absorber of the low height is shocked and deformed for the first time, so the overall shock receiving time is extended. Thus, deformation can be reduced.

Although not specifically shown, in the present invention, in a plurality of soundproof flooring materials as shown in FIG. 1, these soundproofing flooring materials are composed of at least two types of soundproofing flooring materials. Each of the materials comprises a lower plate, a shock absorbing material, and an upper plate, wherein one of the sound absorbing floor materials is in contact with the upper plate and the other is a sound absorbing floor material. Has a gap between it and the upper plate-shaped body, so that when an impact is applied to the plate-shaped discarded material, the shock absorbing material of the other soundproof floor material and the upper plate-shaped body are brought into contact. it can.

As described above, by changing the type and height of the shock absorbing material, the floor impact force is gradually absorbed and reduced, so that the duration of the impact force can be increased and the displacement can be reduced. it can.

In the present invention, the side view of FIG.
The soundproof flooring of the example as shown in the plan view of FIG. As shown in FIG. 8, in the soundproof flooring 23, there is a viscoelastic body 24 as a shock absorbing material on the lower plate-like body 6,
An impact force absorbing plate 25 having the same size as the upper plate-like body 8 is provided thereon, and an upper viscoelastic body 26 as a shock absorbing material is provided at a position not overlapping the lower viscoelastic body 24 in the vertical direction. .
An upper space 27 and a lower space 28 are formed between the viscoelastic bodies.

In the plan view shown in FIG.
The lower plate-like body 6 has a prismatic lower viscoelastic body 24 at each of the four corners and the center of the lower plate-like body 6.
Above, four upper viscoelastic bodies 26 are provided at positions where the lower viscoelastic body 24 does not exist, and the upper plate-like body 8 is provided on the upper viscoelastic body.

According to the present invention, such an impact-relief plate is provided, and the impact-relief plate is provided between the upper plate-shaped member and the lower plate-shaped member. A sound-insulating floor material in which a shock absorbing material is disposed can be used. Such a soundproof floor material receives an impact in a state where the shock absorbing plate is sandwiched between the upper plate member and the lower plate member in the soundproof floor material, and the upper viscoelastic body is deformed. The shock absorbing plate is deformed and the lower viscoelastic body is deformed while the central shock absorbing plate is restored, and the lower viscoelastic body is continuously deformed. As a result, the time for receiving the impact force of the soundproof flooring material is prolonged, and the effect of absorbing and reducing the impact force is enhanced. As described above, when the impact-reducing material is vertically divided by a single plate, the impact can be absorbed even by the deformation stress of the intervening plate, so that a synergistic effect with the excitation energy loss of the upper and lower impact-reducing materials is obtained. Can be expected.

As shown in FIG. 8 and FIG. 9, the shock absorbing material comprises a plurality of shock absorbing materials, these shock absorbing materials are separated from each other, and the upper space and the lower space are provided between each shock absorbing material. Are formed, and when the plate-shaped waste material is subjected to an impact, the bending stress of these shock absorbing materials causes the impact force relaxation plate to bend toward the lower surface space and the upper surface space, and the restoring force of the impact force relaxation plate itself As a result, the bending of the impact force relaxing plate is restored, and the displacement of the impact force relaxing plate can be further increased. In such a configuration, by increasing the restoring force of the impact force relaxation plate, a transmission time lag of the impact force to the lower viscoelastic body occurs, so that the time for absorbing and relaxing the impact can be made longer. The impact force is further reduced.

In the present invention, a soundproof flooring material as shown in the side view in the long side direction of FIG. 10 and the plan view of FIG. 11 can be used. As shown in FIG. 10, the soundproof flooring 29 is such that the lower plate-shaped body 30 is a steel plate 4.5 mm thick × 150.
mm × 100 mm, both short sides of this iron plate 30 are bent upward at about 90 ° to form projections 31 to increase the rigidity of the lower plate-like body, and to provide screw holes 32 at four corners, This is an example in which a columnar viscoelastic body 33 is adhered to the plywood, and the upper plate upper body 34 is a 12 mm thick 100 mm square plywood. As shown in the plan view of FIG. 11, the soundproof flooring material 29 of this example has a single columnar viscoelastic body 33 provided at the center as a shock absorbing material, and a square upper plate-like body 34 on the shock absorbing material. Is provided.

As described above, in the present invention, the lower plate-shaped body is described. However, if the object and role are effectively fulfilled, the lower plate-shaped body may be provided on the floor plate without being particularly plate-shaped. Various cross-sectional shapes, such as a cradle, may be used as long as they can absorb and reduce the impact force. In particular, when the lower plate is made of metal such as iron, bending and welding of panels can be easily performed at low cost, and the bending rigidity can be significantly increased. This is an effective means above. As long as such an effect is exhibited, various shapes of the lower plate and the upper plate can be used.

Further, in the present invention, the soundproof flooring material shown in the side view of FIG. 12 and the plan view of FIG. 13 can be used. In this soundproof floor material 35, on the lower plate-like body 6,
As the shock absorbing material, a square pipe-shaped viscoelastic body 37 having a cavity 36 formed in the center is provided, an upper plate-like body 8 is provided, and a fibrous material 38 is provided on the upper surface of the upper plate-like body 8. ing. As shown in the plan view of FIG. 13, these soundproof floor members 35 can be provided with nine shock absorbing members on the lower plate-like body 6.

As described above, according to the present invention, the shock absorbing material is made of a viscoelastic body, and the viscoelastic body is adhered to one or both of the lower plate and the upper plate. A hollow portion is formed by the lower plate and the upper plate,
When the viscoelastic body is deformed, the air spring in the hollow part, the elastic component of the viscoelastic body, and the resistance component of the viscoelastic body restore the viscoelastic body, efficiently absorbing the impact of the floor,
Floor impact noise can be reduced.

In the present invention, the soundproof flooring material shown in the side view in the long side direction of FIG. 14 and the plan view of FIG. 15 can be used. As shown in FIG. 14, in this soundproof floor material 39, screw holes 41 are provided at four corners of the lower plate-like body 40,
A pipe-shaped viscoelastic body 42 is provided at the center on the lower plate-shaped body 40, and a small-diameter pipe 43 penetrating the side wall of the pipe-shaped viscoelastic body 42 forms a hollow inside the pipe-shaped viscoelastic body 42. 44 is provided so as to communicate with the outside. The upper plate-shaped body 8 is provided on the pipe-shaped viscoelastic body 42. As shown in the plan view of FIG. 15, this soundproof flooring material 39 is rectangular, has screw holes 41 at four corners, has a pipe-shaped viscoelastic body 42 at the center, and has a pipe-shaped viscoelastic body 42. A small-diameter pipe 43 that allows the inner cavity 44 to communicate with the outside of the pipe-shaped viscoelastic body 42 can be provided through the pipe-shaped viscoelastic body 42. On this pipe-shaped viscoelastic body 42, a square upper plate-shaped body 8 can be provided.

In such a soundproof floor material, the shock absorbing material is made of a viscoelastic body, and a hollow portion surrounded by the upper plate-shaped body, the viscoelastic body, and the lower plate-shaped body is formed. Has a through-hole, and the through-hole communicates the hollow portion with the outside of the hollow portion, so that the cavity inside the viscoelastic body is closed by the upper and / or lower plate-like members, By communicating the cavity and the outside with the air spring, it is possible to perform impact energy loss due to the air spring and the resistance to push out the air from the air spring through the pores, prolong the time to receive the impact by the air spring and reduce the impact force The effect of absorbing and relaxing is increased, and the maximum displacement can be reduced.

In the present invention, the sound-insulating flooring material shown in the side view of FIG. 16 and the plan view of FIG. 17 can be used. As shown in FIGS. 16 and 17, in the soundproof flooring material 45, a cushioning material 46 is provided on the entire lower surface of the lower plate-like body 6, and a trapezoidal viscoelastic body 47 is provided on the upper surface of the lower plate-like body 6. One viscoelastic body 48 is provided at each of the four corners and has a height lower than the viscoelastic bodies 47 at the four corners at the center. The upper plate-like body 8 is provided so as to be in contact with the upper surface of the viscoelastic body 47, and the impact force reducing auxiliary material 49 is provided on the entire upper surface. Nine holes 50 are provided in the impact force relaxing auxiliary material 49, and small viscoelastic bodies 51 are provided in the holes 50 at the same thickness as the impact force relaxing auxiliary material 49.

As described above, in the present invention, the impact force relaxing auxiliary material is provided on the upper surface of the upper plate-like body, and the impact force relaxing auxiliary material has a through hole in the thickness direction. If the viscoelastic body is arranged in the, it is possible to reduce the permanent compression set of the impact force relaxing auxiliary material. Further, in such a soundproof flooring material, the restoring force of the auxiliary member for alleviating the impact force and the restoring property of the viscoelastic body such as rubber are used, and the shock absorbing force is further increased when absorbing the shock.

Further, in the present invention, the soundproof flooring material shown in the side view of FIG. 18 and the plan view of FIG. 19 can be used. As shown in FIG. 18, in this soundproof flooring material 52,
An upper plate-like body 55 having the same size as the lower plate-like body 53 is provided except that a compression spring 54 is set on the lower plate-like body 53 and four corners are cut. Upper plate 55 and lower plate 5
Two pairs of tension springs 57, which are fixed with wooden screws 56 and have a slight tensile stress, are provided at the center of the side surface of the pair 3 at symmetrical positions. Further, as shown in FIG.
2 is that the compression spring 54 is a lower plate 53
The tension spring 57 is provided at the center of the center and the periphery of the upper plate-like member 55 and the center of each side surface of the upper plate-like member 55 and the lower plate-like member 53 with a wood screw 56 so that the tension spring 57 applies a slight tensile stress. Can be fixed over.

As described above, according to the present invention, if the soundproof flooring material is provided with the tension spring and the tension spring pulls the upper plate and the lower plate so as to draw each other, the impact of the compression spring or the like can be obtained. When a repulsive vibration against an impact force occurs due to the absorbing material, the attenuation of such vibration can be accelerated.
By using such a vibration damping mechanism, noise on the low frequency side can be efficiently reduced. Further, the impact can be received by the extension spring, and furthermore, the extension spring can prevent the upper plate-like body from bottoming out due to the impact absorbing material.

Hereinafter, the present invention will be described in detail while explaining the operation associated with the structure of the present invention. As the floorboard according to the present invention, a plate-like material on which a plate-like waste material has been conventionally placed can be used. For a detached house or a low-rise apartment house having a flexible structure, a floor slab such as an ALC plate, a PC plate, a hollow extruded cement plate, and a wooden floor panel supported by beams or body gaps can be exemplified. Since these are relatively light in weight per unit and cannot be said to have high rigidity, they are the main reasons why it is difficult to improve the heavy floor impact sound in a soft-structured house. In addition, the floor plate is generally mounted on a beam or the like via a vibration damper so as to prevent it from moving more than an allowable amount, or is fixed lightly, which also causes a difficulty in reducing a heavy floor impact sound.

Next, the plate-shaped material used in the present invention will be described. Conventionally, this plate-shaped material has been fixed or placed on a floor plate with screws or nails. The purpose of this plate-shaped material is to absorb unevenness between floor plates and form a smooth floor surface. In addition, this plate-shaped waste material,
When fixing is performed across a plurality of floor panels, there is also a role of integrating the floor panels and making it difficult to vibrate. As such a plate-like material to be discarded, a wooden board material such as a particle board or a plywood, which can be easily nailed or screwed, is preferable.

Next, the sound-insulating flooring material for absorbing and relaxing the floor impact force is an integral component of the lower plate-like body, the shock absorbing material and the upper plate-like body, and the lower plate-like body. The role in the present invention is firmly fixed to the floor plate below it,
If the floorboard consists of a plurality of panels, it acts as a link between these panels. In this case, since the plurality of panels are formed as one floor plate, the floor plate as a whole is heavy and rigid.

In order to effectively fulfill such purposes and roles, it is more effective to fix the lower plate to the floor plate with screws, bolts, nails, etc., and it is particularly effective to fix the lower plate together with an adhesive. Good results are obtained because the stiffness is further increased. Specific examples of the lower plate-like body include metal plates such as iron and stainless steel, wood plates such as plywood, and FRP.

Since it is in direct contact with the floor plate, felt, nonwoven fabric, rubber, plastic sheet, foam sheet, cork, etc. are interposed between the floor plate and the lower plate-like member as a buffer material in order to avoid generating abnormal noise. You can do things.

In the present invention, although described as a lower plate-like body, it can be provided on a floor plate even if it is not particularly plate-like as long as it effectively fulfills these objects and functions. Various cross-sectional shapes, such as a cradle, may be used as long as the member absorbs and relieves the pressure. In particular, when the lower plate is made of a metal such as iron, bending and welding of an iron plate can be easily performed at low cost, and the bending rigidity can be remarkably increased. It is an effective means for doing so. For this reason, the lower plate-like body is particularly good as long as it has been subjected to such processing. In any case, since the lower plate-like body is panel-shaped and fixed to the floor plate with screws or the like, it is easier to carry out the operation when the upper plate-like body is slightly larger than the upper plate-like body. It is preferable to make notches at the four corners.

Next, the shock absorbing material will be described. As the shock absorbing material according to the present invention, a compression spring or a viscoelastic body made of plastic and / or metal can be used alone or in combination.

The compression spring made of plastic or metal may be a coil spring, a disc spring, a laminated leaf spring, or a material obtained by bending a band, a material obtained by bending or a plate. Further, a structure in which the compression spring receives an impact and the extension spring prevents bottom contact and accelerates vibration damping may be used. In the present invention, since the soundproof floor material is applied to the floor, walking feeling is a very important factor when performing floor finishing. It is no exaggeration to say that the shock absorbing material greatly affects this walking feeling.

The inventor of the present invention obtained a correlation between the walking sensation of many people and the maximum displacement when a shock was applied to the floor with a bang machine specified in JIS-A-1418. It was understood that the amount was within 10 mm as an absolute condition.

It was also found that the seasickness phenomenon was caused by the relationship between the roll and the decay time more than the vertical displacement. This phenomenon is, for example, when plates and rubber are alternately stacked in multiple layers like a seismic isolation material, it is hard to move up and down, and it is easy to roll, but in the present invention, to absorb the impact, In this case, the sound-insulating floor member is displaced up and down.

Based on the above-mentioned findings, the mechanism for alleviating the impact force of each soundproof floor material according to the present invention is a progressive spring, and the initial displacement is such that a degressive spring is used. It is desired to reduce the amount. In addition, as the shock absorbing material, it is effective to make the height as low as possible for rolling.

Further, in order to shorten the decay time, a great improvement can be achieved by using a plurality of shock absorbing materials, or by using a linear spring or a combination of a compression spring and a tension spring.

Next, a viscoelastic body as a shock absorbing material will be described. If the viscoelastic body is a very soft viscoelastic body of about 3 to 60 with a C-type hardness meter of SRIS-0101,
The resilience is good. From this point of view, the type in which the time until restoration is long, or the type in which a vulcanized rubber or elastomer is used and the shape is easily deformed from about 30 to 75 in a JIS-A hardness tester are particularly preferred in the present invention. It is suitable.

It can be said that the former viscoelastic body of a type having a long time until restoration is a liquid polymer which is liquid at normal temperature and has two or more reactive groups per molecule.
Table 1 shows a combination example of the reactive functional group of the liquid polymer having the reactive functional group and the reactive functional group of the curing agent. In the table,
In particular, the combination of a telekey polymer having a hydroxyl group at the molecular terminal and a curing agent having two or more isocyanate groups per molecule is excellent in shock absorption mitigation performance, processing workability, economy, durability and reaction controllability. It is the best material.

[0061]

[Table 1]

Specific examples of the hydroxyl group-terminated telechelic polymer include those having a hydroxyl group at the terminal and having a main chain of polybutadiene, hydrogenated polybutadiene, polybutadiene-acrylonitrile copolymer, styrene-butadiene copolymer, isoprene, and the like. Examples thereof include polyether polyol, polyester polyol, urethane acryl polyol, aniline derivative polyol and the like. These may be used alone or in combination.

As the curing agent, toluylene diisocyanate, diphenylmethane diisocyanate,
Examples thereof include modified isocyanates such as hexamethylene isocyanate and isophorone diisocyanate, and prepolymers and blocked isocyanates having terminal isocyanate groups. These curing agents can be used alone or in combination, and the molar ratio is 0.5NCO / OH.
Can be used as ~ 1.5 NCO / OH.

The viscoelastic body of the present invention which takes a long time to recover may be a viscoelastic body obtained by the combination described above. However, from the viewpoints of shock absorption relaxation, durability and economy, a plasticizer is used. Mixing substances commonly used in the rubber and paint industries, such as bituminous substances, adhesives, fillers, antiaging agents, catalysts, coupling agents, flame retardants, surfactants, defoamers, etc. Can be used.

The flexible type viscoelastic body which takes a long time to recover suitable for the present invention is flexible, and therefore can be deformed when subjected to an impact between the upper plate and the lower plate. Since the side part is deformed at 360 degrees in the vertical direction of the viscoelastic body and the amount of displacement is extraordinarily large, the impact absorption time is inevitably prolonged, and the ability to absorb and mitigate the impact is large. Become.

When a plurality of objects having such a performance are provided between the upper plate and the lower plate and subjected to impact, the deformed surface area of the side surface is far greater than that provided in a single large form. The sum of becomes large and the impact force is dispersed individually,
The ability to absorb and mitigate shocks is greater.

The condition is that the ratio of the sum of the upper and lower installation areas (S ₁ ) of the viscoelastic body per one soundproof flooring material and the sum (S ₂ ) of the deformable surface area of the side surface is S ₂ / S ₁ = 0. .2 to 5 is a good range. By further promoting this idea, the more flexible type viscoelastic body has one feature in the restoring property. When the sample of the viscoelastic body was 50 mmφ and 30 mm thick, it was unloaded immediately after being compressed by 25%. A material exhibiting 70% to 90% resilience after 1 minute and exhibiting 95% or more resilience after 10 minutes has a high impact force relaxing effect.

From these viewpoints, according to the present invention, the impact absorbing material made of the viscoelastic body is the sum of the contact area of the upper plate and the lower plate of the viscoelastic body per one soundproof flooring material. S ₁ )
And the ratio of the surface area of the deformable side surface of the viscoelastic body (S ₂ ) is S ₂ / S ₁ = 0.2 to 5, and the viscoelastic body is a compression test according to JIS-K-6301. 50 according to the method
When the thickness is 30 mm in mmφ, it is preferable that the unloading is performed immediately after the compression by 25%, and that the recovery is 70% to 90% after 1 minute and 95% or more after 10 minutes.

Such a viscoelastic body is instantaneously restored, but it takes time until it is completely restored, and a phase difference occurs before the impact is transmitted to the floor panel, so that the absorption of the impact is reduced. Is considered to be effective.

Further, when the viscoelastic body is provided on the upper and lower sides of the soundproof flooring material via the impact force reducing plate, the viscoelastic body receives an impact while being sandwiched between the upper plate and the lower plate. Will be deformed, the upper viscoelastic body will be deformed, and the impact-absorbing plate will be deformed,
While the lower viscoelastic body is being deformed, the central impact force absorbing plate is restored, and the lower viscoelastic body is continuously deformed. As a result, the time for receiving the impact force of the soundproof flooring material is prolonged, and the effect of absorbing and reducing the impact force is enhanced.

Further, by providing the viscoelastic bodies provided above and below the impact-relief plate so that the upper and lower viscoelastic bodies do not overlap in the vertical direction, the displacement of the impact-relief plate can be increased. In such a configuration, by increasing the restoring force of the impact force relaxation plate, a transmission time lag of the impact force to the lower viscoelastic body occurs, so that the time for absorbing and relaxing the impact can be made longer. The impact force is further reduced.
As one of the functions of the viscoelastic body, when the impact relieving material is used in combination with the compression spring, the compression spring has an effect of preventing the bottom spring from being compressed beyond the compression limit.

Further, the impact force-reducing plate is used to divide the viscoelastic body or the spring into upper and lower stages to disperse the impact force, thereby facilitating the absorption and relaxation of the impact and deforming the impact force-reducing plate itself. Impact energy loss. Further, by dividing the shock absorbing material into upper and lower parts by the shock absorbing plate, there is an advantage that the thickness of the shock absorbing material can be reduced and the resilience can be improved over a long period of time.

If the height of the viscoelastic body is changed in two or three steps by further proceeding with such a concept, first, the tallest viscoelastic body receives an impact, and the height of the second tier gradually increases. As a result, the viscoelastic body at the third level and the viscoelastic body at the third level receive the impact, so that the effect of absorbing and relaxing the impact force is enhanced.

Further, by providing a cavity inside the viscoelastic body and closing the cavity with the upper and / or lower plate-like body, or communicating the cavity with the outside with the pore, the pore can be separated from the air spring or the air spring. And the effect of absorbing and relaxing the impact force by lengthening the time of receiving the impact by the air spring can be increased, and the maximum displacement can be reduced.

Further, among the viscoelastic bodies according to the present invention, ordinary vulcanized rubbers and elastomers are used in a JIS-A hardness scale of 30 to 30%.
A viscoelastic body of a type in which about 75 is easily deformed includes natural rubber, EPT, IIR,
IR, BR, SBR, CR, NBR, norbornene rubber, acrylic rubber, urethane, silicone rubber, SIS,
SBS, SEBS, etc. can be used alone or in combination. Fillers, plasticizers, various anti-aging agents, vulcanizing agents, vulcanization accelerators, vulcanization aids, etc. commonly used in the rubber industry are required. May be blended according to.

These viscoelastic materials need to be appropriately designed so as to be easy to absorb and absorb shocks and to be easily restored. In addition, as described above, the height is changed, and a portion that receives an impact after exceeding a certain deformation amount is in two or three stages. It is preferable to increase the shock absorption time.

Examples of the shock-mitigating auxiliary material that can be used in the present invention include fibrous materials, foams, and porous materials. It is valid.

First, the fibrous material will be described. The fibrous material, even if it is a single or a combination of a plurality of fibers, it is practically impossible to obtain a soundproof floor material that absorbs and relieves the floor impact force by using only the fibrous material. Only in combination with the above-mentioned plastic or metal spring or viscoelastic body is the position where the effect of absorbing and absorbing shock can be improved. Fibrous materials are generally deformed at low stress, and compression set is likely to occur.

The fibrous material suitable in the present invention has a core-sheath structure,
The sheath part has a lower melting point than the core part, the density of the heat-sealed part of the sheath between the fibers is high, the thing with good resilience, and the one where the number of needle punches is increased to reduce the compression set from the beginning Is suitable. Further, it is desirable that the thickness be 10 mm or less so that the compression set is reduced. In addition, holes may be provided in some places, rubber with a small ground contact area and high resilience will be provided in the holes, and the structure will be such that the resilience of rubber is used for restoration, and the impact absorbing power of fibers is used when absorbing impact. it can.

Next, the foam will be described. This foam also plays a supplementary role to further improve the impact absorption and mitigation effect of a plastic or metal spring or a viscoelastic body, similar to the above-mentioned fibrous material. The foam referred to here is preferably a material containing a large number of closed cell structures, and it is necessary not to increase the thickness from the beginning so as not to increase the compression set due to long-term use, and to use a foam having a low expansion ratio. is there. Further, as described in the description of the fibrous material, it is also desirable to provide a rubber or the like having good restoring properties at various places in the foam layer to prevent deterioration of the restoring force.

Next, the porous material will be described. The porous material referred to in the present invention refers to a material obtained by bonding and fixing a particle having rubber elasticity, cork particles, or foam particles alone or in combination with a binder using the same binder as the fibrous material or foam. It is almost impossible to absorb and reduce the impact force only with the porous material, and it is desirable to use the spring as a plastic or metal spring or a viscoelastic material as an auxiliary material for absorbing or absorbing the impact.

These impact force-mitigating aids may be used between the lower plate and the upper plate together with the shock absorbing material, but may be used between the upper plate and the discarded material. Since the pressure receiving area increases several times, the amount of compression set can be reduced, and it is easy to use together with a viscoelastic body for assisting resilience, which is preferable.

Next, the upper plate-shaped member will be described. The upper plate-like body, when it receives a floor impact force from a plurality of shock absorbing materials and the lower plate-like body at the same time, simultaneously presses at approximately the same distance in the final state. It has the role of dispersing the force instantaneously and displacing it vertically without any lateral displacement due to the presence of a plurality of impact force reducing materials. In addition, since it also has a role of fixing the upper plate-shaped material, it is preferable to use a material such as a plywood, a particle board, or the like, which is easy to perform wood screws or nailing. In addition, since the upper plate-like body is pressed with a plate-like scraping material, there is no particular limitation on the plate thickness. However, when emphasis is placed on workability, it is not always necessary to stop the entire plate-like lamination material and the upper plate-like material. Need 63H
There is no effect on z or 125 Hz. It tends to be slightly higher at 250 Hz or higher.

Since the upper plate is attached to the floor as a soundproofing floor provided with a shock absorbing material between the upper plate and the lower plate, the larger the plate is, the easier it is to disperse the impact. For this reason, it is good to use a square of 100 mm or more, and if it is too large, the workability deteriorates. Also, the upper plate-like body is slightly smaller than the lower plate-like body, and a space for fixing a screw or the like to the lower plate-like body with a drill is provided, or four corners of the upper plate-like body are notched,
It is better to provide a drill fixing space by offsetting the lower plate by 45 ° or an appropriate angle. The shape of the upper plate-like body is not particularly limited, such as a square, a rectangle, a triangle, and a circle.

[0085]

The present invention will be described below in more detail with reference to examples and comparative examples. Example 1 A soundproof flooring material shown in FIGS. 1 to 3 was manufactured. The lower plate-shaped body was a 4.5 mm thick × 300 mm × 300 mm iron plate, and screw holes were provided at four corners. Next, the viscoelastic body of Formulation Example 1 shown in Table 2 was produced in the form of a prism having a thickness of 15 mm × 40 mm × 40 mm. Using such a viscoelastic body as a shock absorbing material, an upper plate-like body (12 mm thick x 250 mm x 250 m
m plywood), and further, affixed to the lower plate-like body with an adhesive to produce a soundproof floor material. FIG. 2 is a side view of this soundproof flooring material, and FIG. 3 is a plan view thereof.

[0086]

[Table 2]

This soundproof floor material was used for a plurality of ALCs (100 m
A m-thickness x 650 mm x 1800 mm) was used as a floor plate, and attached with DAC screws having a length of 90 mm and a pitch of about 600 mm in the width and length directions of the ALC so as to straddle between the ALCs. Thereafter, in the width direction of the ALC, a particle board (12 thickness × 900 mm × 1800
mm) was placed thereon, and a particle board of the same size was further laminated in a direction orthogonal to the lower particle board to form a floor base surface, thereby producing a soundproof floor structure shown in FIG.

Example 2 A soundproof flooring material shown in FIGS. 4 and 5 was manufactured. The lower plate is 12 mm thick x 300 mm x 300 mm plywood, the upper plate is 12 mm thick x 250 mm x 250 mm plywood,
The viscoelastic body of Formulation Example 2 shown in Table 3 was prepared by adding
It was made into a cylindrical shape of mmφ, and a polyester core-sheath structured nonwoven fabric of 5 mm thickness × 50 mmφ was adhered with an adhesive, further adhered to the four corners and the center of the upper plate, and also adhered to the lower plate. FIG. 4 is a side view and FIG. 5 is a plan view of the soundproof flooring material produced by the above method.

[0089]

[Table 3]

As in the case of the first embodiment, the sound-insulating floor material is stretched between the ALCs of the floorboard ALC (100 mm thick × 600 mm width × 1800 mm length) so that the width direction and the length direction of the ALC are each about 600 mm. The pitch was set, and fixed with a DAC screw having a length of 90 mm. Further, similarly to Example 1, 12 mm thick × 900 mm wide × 1800
mm-length particle board as a plate-like pick-up material, the lower particle board in the direction perpendicular to ALC, the upper particle board in the direction perpendicular to the lower particle board,
The upper plate-like body of the soundproof floor material and two particle boards were fixed with wooden screws to form a floor base surface, thereby producing a soundproof floor structure.

Example 3 A soundproof flooring material shown in FIGS. 6 and 7 was produced. The lower plate is 12 mm thick x 300 mm x 300 mm plywood, the upper plate is 12 mm thick x 250 mm x 250 mm plywood,
Next, the viscoelastic body shown in Formulation Example 1 of Table 2 was
It is made into a prismatic shape of thickness x 40 mm x 40 mm, attached with adhesive at the center and the center of the sides of the lower plate-shaped body, and further provided with coil compression springs 20 mm high at the four corners, and the coil compression springs on the upper plate-shaped body. Was fixed. Next, a 5 mm-thick polyester core-sheath structured nonwoven fabric was stuck on the upper surface of the upper plate-like body, and a 10-fold foamed polyethylene sheet of 2 mm thick was stuck on the lower surface of the lower plate-like body to produce a soundproof flooring material. FIG. 6 is a side view of the soundproof flooring, and FIG. 7 is a plan view of the soundproofing flooring.

Using this soundproof floor material, a soundproof floor structure was manufactured in the same manner as in Example 2. In addition, arrangement of soundproof flooring
5 at equal intervals in the width direction of the ALC
Provided. The ratio of the installation area of the lower plate to the floorboard was 5 × 0.3 × 0.5 / 0.6 × 8 = 0.42.

Example 4 A soundproof flooring material shown in FIGS. 8 and 9 was produced. The lower plate was 12 mm thick x 300 mm x 300 mm plywood, and the upper plate was 12 mm thick x 250 mm x 250 mm plywood. Next, as a viscoelastic body shown in Formulation Example 1 in Table 2, a prism having a thickness of 5 mm × 35 mm × 35 mm and a prism having a thickness of 10 mm × 40 mm × 40 mm were prepared. Also, a spring steel having a thickness of 1 mm × 250 mm × 250 mm was prepared as an impact force relaxation plate, and a 10 mm thickness × 4 was placed on the impact force relaxation plate.
Four rectangular prisms of 0 mm × 40 mm were adhered around a position 75 mm from both sides as a center, and adhered to the upper plate-shaped body. Then, 5 mm thick × 35 mm × 35 mm prisms were adhered to the four corners and the center under the impact force-reducing plate at the four corners and the center, and the lower plate was adhered to produce a soundproof flooring material. FIG. 8 is a side view of the soundproof floor material, and FIG. 9 is a plan view. In the soundproof flooring material of this example, the upper shock absorbing material is provided at a central position between the lower shock absorbing materials.

On this soundproof flooring material, as in Example 3,
Two 12 mm thick x 900 mm x 1800 mm particle boards, each with the lower particle board in the direction orthogonal to the ALC, and placed on the upper side in the direction orthogonal to the lower particle board, fixed with wooden screws toward the upper plate, and soundproof floor The structure was manufactured. In this sound-insulating floor structure, the sound-insulating floor material is a system in which the left and right ALCs are fixed around the joint between the ALCs, and the ratio of the lower plate-like body per ALC is 7%.
× 0.3 × 0.3 / 0.6 × 1.8 = 0.58.

Example 5 A soundproof flooring material shown in FIGS. 10 and 11 was manufactured. The lower plate is a 4.5 mm thick x 100 mm x 150 mm iron plate,
Screw holes were formed at the four corners of this iron plate, and the short side was bent upward at a right angle to 10 mm. Then, in the center, an 80 mmφ20 mm thick shock absorbing material made of a viscoelastic material of Formulation Example 3 shown in Table 4 was added. 9mm thick x 100m
A plywood of mx 100 mm was bonded to produce a soundproof flooring. FIG. 10 is a side view of the soundproof flooring material viewed from the long side direction of the lower plate-like body, and FIG. 11 is a plan view.

[0096]

[Table 4]

This soundproofing floor material is used as a floor plate for a plurality of ALCs.
(100mm thick x 600mm width x 1800mm length) using a 90mm long DAC to connect ALCs
It was fixed to ALC on the lower plate by screws.
At this time, the bent portion of the panel lower plate was made to be orthogonal to the joint between the ALCs. 600m in ALC width direction
m pitch, 300mm pitch in the length direction, one AL
Eleven pieces were provided for C0.6 × 1.8 m ² . On top of this,
12 mm thick x 900 mm x 1800, as in Example 4.
Two particle boards having a diameter of 2 mm were provided, and the lower particle board was provided so as to be orthogonal to the ALC, the upper particle board was provided so as to be orthogonal to the lower particle board, and fixed with wood screws to produce a soundproof floor structure. The ratio of the lower plate to the floorboard is 11 × 0.1 × 0.13 × 10 m ^2.
/0.6×1.8 m ² = 0.12.

Example 6 A soundproof flooring material shown in FIGS. 12 and 13 was manufactured. The viscoelastic body of Formulation Example 4 shown in Table 5 in which the lower plate-like body was a plywood (12 mm thick × 350 mm × 350 mm) and the inner side was a 50 mm square × 20 mm thick and 30 mm square hollow inside was placed on the lower plate-like body. Nine pieces were attached with CR adhesive. Next, plywood (12m
m thickness x 300 mm x 300 mm) as the upper plate, and C
The viscoelastic body was bonded with an R adhesive, and a nonwoven fabric was further laminated on the upper surface to produce a soundproof flooring material. FIG. 12 is a side view of the soundproof floor material, and FIG. 13 is a plan view.

[0099]

[Table 5]

This soundproofing floor material was prepared by using a plurality of ALCs (100 mm thick × 600 mm width × 1800 m
ALC adjacent at a pitch of 600 mm in the width direction (m length)
The gap is fixed with a DAC screw, and four pieces are fixed at a pitch of 450 mm in the length direction with a DAC screw.
Three were fixed at m pitch. Seven pieces were used per ALC. The ratio of the lower plate to the floorboard is 7 × 0.35 ×
0.35 / 0.6 × 1.8 = 0.79m was ² / m ^2. 12mm thickness x 900mm width x 1 on this soundproof floor material
A particle board having a length of 800 mm was provided in a direction perpendicular to the ALC, and the above-described particle board having a thickness of 12 mm was provided thereon in a direction perpendicular to the particle board and fixed with wooden screws to manufacture a soundproof floor structure.

Example 7 A soundproof flooring material shown in FIGS. 14 and 15 was manufactured. The lower plate-like body is made of a 4.5 mm thick x 150 mm x 100 mm iron plate,
A tubular viscoelastic body (80 m in outer diameter) of Formulation Example 4 shown in Table 5
m, an inner diameter of 50 mm, and a height of 20 mm) were used as the shock absorbing material. The hollow and the outside were communicated with the shock absorber using a pipe having an inner diameter of 2 mm at the center. This viscoelastic body was bonded to the lower plate-like body with cyanoacrylate, and the upper plate-like body was bonded to a 9 mm thick x 100 mm x 100 mm plywood with cyanoacrylate to produce a soundproof flooring material.

This soundproofing floor material was converted into a floor panel ALC having a thickness of 100 mm × 600 mm width × 1800 mm length by a core / core ALC.
300mm in the width direction, centering on the seam adjacent to
Five pieces were provided at a pitch of 300 mm in the length direction.
10 pieces per ALC (10 × 0.1 × 0.15m ²
/0.6×1.8 m ² ) = 0.14 m ² / m ² ). 12mm thick x 900m on this soundproof floor
One particle board of m width x 1800 mm length is provided perpendicular to ALC, and another particle board of the same size is provided in the direction perpendicular to the particle board, and fixed with wood screws from above to manufacture a soundproof floor structure. did.

Example 8 A soundproof flooring material shown in FIGS. 16 and 17 was manufactured. The lower plate-like body is a plywood having a thickness of 12 mm x 330 mm width x 330 mm length, a base 80 mm square, a top 50 mm square, an upper 26 mm
A viscoelastic body of Formulation Example 1 shown in Table 2 having a trapezoidal shape having a corner and a height of 26 mm is provided at each of the four corners of the lower plate-like body, and has a base 80 mm square, an upper side 57 mm square, and a height 20 in the center.
The viscoelastic body of the same formulation example 1 of mm was provided. Next, 9
A 300 mm square plywood having a thickness of 300 mm was used as an upper plate, and the upper plate was bonded to viscoelastic bodies at four corners, and a 6 mm thick, 300 mm square nonwoven fabric was laid on the upper surface of the upper plate. Nine 30 mmφ holes were made in this nonwoven fabric, and viscoelasticity of 20 mmφ was attached to these holes. A 2 mm-thick foamed polyethylene was adhered to the entire lower surface of the lower plate-like body to produce a soundproof flooring material.

The soundproofing floor material was placed on a floor plate ALC 100 mm thick × 600 mm width × 1800 mm length in the same manner as in Example 6 with a core / core centered on the adjacent seam of the ALC and a pitch of 600 mm in the width direction of the ALC. , 4 in the length direction
It was fixed with a DAC screw at a pitch of 50 mm. A soundproof floor material was also fixed at the center of the four soundproof floor materials. ALC1
7 pieces per sheet (7 × 0.33 × 0.33 / 0.6 × 1.
8 = 0.71 m ² / m ² ). Also on this soundproof flooring, particle board 12mm thick x 900m
Two boards having a width of 1800 mm and a width of 1800 mm were installed in a direction perpendicular to the ALC and further in a direction orthogonal to the particle board below, and fixed with wood screws to manufacture a soundproof floor structure.

Example 9 A soundproof flooring material shown in FIGS. 18 and 19 was manufactured. The lower plate is 12 mm thick, 300 mm square plywood, the coil compression spring is 20 mm high, provided at the center of the side and the center of the plate, and the upper plate with four corners cut is 12 mm thick, 300 square plywood. The compression spring was fixed to the plywood with a V-shaped nail. Tensile stress was applied to the center of the sides of the upper and lower plywood with wooden screws, and two pairs of coil tension springs were set by fastening the wooden screws to the rings at both ends of the coil tension springs, thereby producing a soundproof flooring material.

The soundproof floor material was fixed to the floor plate ALC with DAC screws using notches at the four corners of the upper plate body. For the fixation, 600 mm in the width direction and 3 mm in the length direction with the core / core centering on the joint between ALCs.
Five pieces were provided per ALC at 00 mm. The contact area ratio between the floor plate and the lower plate is 5 × 0.3 × 0.3 / 0.6 ×
1.8 was set to 0.42 m ² / m ² . In the same manner as in Example 8, two 12 mm-thick particle boards were provided on the panel so as to be orthogonal to each other, and were fixed with wood screws to produce a soundproof floor structure.

Comparative Example 1 A floor plate ALC was placed, and 12
mm × 900mm × 1800mm particle board 2
The lower particle board is provided with a longitudinal direction in a direction perpendicular to the longitudinal direction of the ALC, the upper particle board is further grounded in a direction perpendicular to the ALC, and a 90 mm long DAC is placed on the ALC floor board from above the two discarded particle boards. The floor structure was manufactured by fixing with screws.

Test Method The viscoelastic material and sound-insulating floor material used for these sound-insulating floor structures, and the sound-insulating floor structures and floor structures were tested as follows.

1. Maximum instantaneous displacement of soundproof floor structure and floor structure Non-contact type laser displacement measuring device (manufactured by KEYENCE CORPORATION) irradiates a blinking laser beam every 0.5 ms to the nearest point of the bang machine to determine the relationship between time and displacement. The value when the maximum displacement was measured by continuously measuring every 1 ms was defined as the maximum instantaneous displacement. Tables 6 to 10 show the results of Examples 1 to 9 and Comparative Example 1.

[0110] 2. Restorability of viscoelastic body For an example in which a viscoelastic body was used as a shock absorbing material, the outer diameter was 50 mm under the same composition and the same molding conditions as the viscoelastic body.
Three cylinders with φ and 30 mm height were prepared as test specimens, and J
According to the compression test method of IS-K-6301, the specimen was compressed by 25% and immediately unloaded, and the height (h ¹ ) restored after 1 minute was measured. Table 6 shows the average of three specimens calculated by the formula. Restoration rate after 1 minute (%) = 1 minute after the restored height / uncompressed original height × 100 Next, measure the height was restored after 10 minutes (h ^10), 1 minute ago formula 10 minutes later, calculations were performed using the rewritten formula, and the average of three test specimens is shown in Tables 6 to 10.

3. Heavy floor impact sound ALC floor plate (100 mm thickness x 600 mm width x 180) is placed on the second floor of a steel-framed detached house on an I-shaped steel beam to which a fall prevention plate is welded in places through a rubber cushioning material of 5 mm thickness x 50 mm width.
(0 mm length), the floor structure of each example and comparative example was constructed on the floor of a 6 tatami room on which a heavy floor impact sound was measured according to JIS-A-1418 in a room directly below. Table 6 to Table 1
0.

The floor / ceiling space is 24K1 over the entire ceiling.
Provide a 00mm thick glass wool, the ceiling is an independent ceiling,
Under the condition that gypsum board 12.5mm thickness was constructed without gaps,
All tests were performed.

[0113]

[Table 6]

[0114]

[Table 7]

[0115]

[Table 8]

[0116]

[Table 9]

[0117]

[Table 10]

Hereinafter, test results of the examples and the comparative examples will be sequentially described. In the first embodiment, an iron plate having high rigidity is used as a lower plate-like body, and is firmly fixed to an ALC floor plate, which is a floor plate, with DAC screws. the plate-like body as plywood, under the plate捨貼material, an example in which in floorboard 1 m ² per 0.25 m ^2. The maximum instantaneous displacement at this time is 6 mm, and 10
mm or less, and the walking feeling is good. In addition, the restoration rate of the shock absorbing material was 85% after 1 minute and 100% after 10 minutes, showing a certain degree of restoration in a short period, and a restoration of 95% or more after 10 minutes. The weight impact sound at this time is L _H −
Satisfies the 57 next L _H -55 grade. Also, compared to L _H -64 Comparative Example 1 (L _H -65 grade), and 2 rank improved. In particular, 63H which is difficult to improve due to heavy floor impact sound
Improvements of 7 dB and 8 dB are seen at z and 125 Hz, respectively. This indicates that the absorption and mitigation of the impact force is effective.

The second embodiment is an example in which the lower plate is made of 12 mm plywood, and is firmly fixed to the ALC floor plate with DAC screws. This is an example in which five viscoelastic bodies are provided on the lower plate-like body, and a fibrous material is provided thereon as an auxiliary material for reducing impact force, and a 12 mm plywood of the upper plate-like body is used as a soundproof floor material. The flooring is provided floor area 1 m ² per 0.25 m ^2. At this time, the maximum instantaneous displacement is 7 mm, and the walking feeling is good. At this time, the viscoelastic body has a recovery rate of 83% after one minute,
After 10 days, it is 97%, and the effect of absorbing and mitigating impact is also good. Heavy floor impact sounds are two ranks improved than Comparative Example 1 in L _H -55 (L _H -55 grade), particularly improved hard 63Hz weight floor impact sound, 125 Hz was good are each 9dB improvement can impact absorbing relieving effect It turns out there is.

In the third embodiment, the lower plate is made of 12 mm plywood, a cushioning material is provided on the lower surface thereof, and the lower plate is fixed to the ALC floor plate with DAC screws. Five viscoelastic bodies and four compression springs are provided thereon. This is an example in which a 12 mm plywood is provided thereon, and a soundproof flooring material is further provided with an auxiliary material for reducing impact force provided on an upper plate-like body. The flooring is provided floorboard 1 m ² per 0.42 m ^2. At this time, the maximum instantaneous displacement is 7 mm, and the walking feeling is good. The restoration rate was 85% after 1 minute, and 1% after 10 minutes.
00%, and the shock absorption relaxation is good. In this case heavy floor impact sounds are L _H -56 (L _H -55 grade), has improved 2 ranks than Comparative Example 1, difficult 63Hz for improvement in heavy floor impact sounds, 125 Hz each 10 dB, can 8db improved It can be seen that the effect of absorbing and reducing the impact is good.

In Example 4, the lower plate-like 12 mm plywood was fixed to the ALC floor plate with DAC screws, and the viscoelastic body was not vertically superimposed on the upper and lower sides of the shock absorbing plate as a shock absorbing material. This is an example of a sound-insulating flooring material provided in such a manner that a 12 mm plywood is provided thereon as an upper plate-like body. The flooring, the floorboard 1 m ² per, 0.58 m ² provided, maximum instantaneous displacement amount at this time is 3 mm, the walking feeling very good.
The restoration rate was 85% after 1 minute and 100% after 10 minutes, which is good. Heavy floor impact sound at this time, L _H -54
(L _H -55 grade) in improved 2 ranks than Comparative Example 1,
63Hz and 125Hz which are difficult to improve are also 11dB and 1 respectively.
It is understood that the shock absorbing and relaxing effect is good at 0 db.

In the fifth embodiment, the lower plate is made of an iron plate having high rigidity, and the iron plate whose both ends are bent and the rigidity is further increased is fixed to the ALC floor plate with DAC screws, and a viscoelastic body is provided as a shock absorbing material. This is an example of using a soundproof flooring material in which the side plate-like bodies are 9 mm plywood. The flooring is provided with floorboard 1 m ² per 0.12 m ^2. The maximum instantaneous displacement at this time is 5
mm, and the walking feeling is good. Restoration rate is 74 after 1 minute
%, 96% after 10 minutes, indicating a high effect of absorbing and relaxing shock. The heavy floor impact sound at this time is L _H -57 (L _H
-55 grade), which is two ranks better than Comparative Example 1. In addition, 63 Hz, 1
The improvement amount at 25 Hz is 7 dB for each, and it can be seen that the effect of alleviating the impact absorption is good.

In Example 6, the lower plate-like body was 12 mm plywood,
There nine hollow square pipe shaped viscoelastic body thereon, the 12mm plywood provided as the upper plate-like body thereon, the impact relaxation auxiliary material sound-insulating floor members provided thereon, the floorboard 1 m ² per This is an example provided with 0.79 m ² . The maximum instantaneous displacement at this time is 6 mm, and the walking feeling is good. The restoration rate of the viscoelastic body at this time is as good as 78% after 1 minute and 97% after 10 minutes. The weight floor impact sound at this time is L
In _H -53 (L _H -55 grade), has been improved to near the L _H -50 grade. 63 Hz, 125 Hz, which is improved by two ranks as compared with Comparative Example 1 and in which it is difficult to improve the weight floor impact sound
Are also improved by 12 dB and 11 dB, respectively, and show a very good impact absorption and mitigation effect.

In the seventh embodiment, the lower plate is made of an iron plate,
A viscoelastic body having a communicating hole in the shape of a hollow round pipe is fixed on the C floor plate with a DAC screw.
floor sound-insulating floor members provided with a mm plywood 1m ² per 0.14
This is an example in which m ^{2 is} provided. The maximum instantaneous displacement at this time is 7 m
m, recovery rate 78% after 1 minute, 97% after 10 minutes
Is good. The weight floor impact sound at this time is L _H
A -56 (L _H -55 grade), made up two ranks improved than Comparative Example 1. 63Hz, 1
25 Hz is improved by 10 dB and 8 dB, respectively, and it can be seen that the effect of absorbing and relaxing shock is large.

[0125] In Example 8, the lower plate-like body was 12 mm plywood.
Then, set an impact material underneath and use DAC screws on the ALC floorboard.
It is fixed, and a trapezoidal viscoelastic body has a height at the four corners and the center
9mm plywood on top of the upper plate
As a body, and as an auxiliary material to reduce impact force
Holes are provided in some places, and viscoelastic bodies are provided in the holes.
Sound flooring 1m^Two0.71m per^TwoThis is an example
You. The maximum instantaneous displacement at this time is 4 mm, and walking feeling is good.
It is good. At this time, the restoration rate of the viscoelastic body was 85 after 1 minute.
%, 100% after 10 minutes, which is good. At this time
Weight floor impact sound is L _H-54 (L_H-55 class)
That is, it is improved by two ranks as compared with Comparative Example 1. Also, weight
63Hz and 125Hz for which it is difficult to improve floor impact noise
1dB, 10db can be improved, and good shock absorption and relaxation effect
It is shown.

In the ninth embodiment, the lower plate is made of 12 mm plywood, fixed to the ALC floor plate with DAC screws, and five compression springs and four tension springs are provided thereon as shock absorbing members. Soundproof flooring with 12mm plywood 1m floorboard
^This is an example in which 0.42 m ^{2 is} provided per ² . The maximum instantaneous displacement at this time is 8 mm, and the walking feeling is good. Heavy floor impact sound at this time is L _H -57 (L _H -55 grade)
As a result, two ranks were improved as compared with Comparative Example 1. In addition, 63 Hz and 125 Hz, which are difficult to improve, can be improved by 8 dB and 7 dB, respectively.

[0127]

According to the soundproof floor structure of the present invention, a plurality of soundproof floor materials are provided apart from each other as a floor-forming base material and a floorboard, and the soundproof floor material and the space between them are provided by: By absorbing and relaxing the impact force of the floor, low-frequency noise generated from the floorboard can be significantly reduced.

As described above, according to the present invention, it is not necessary to increase the rigidity of the structure of the building itself, or to increase the floor rigidity or the floor weight. Particularly suitable for apartment houses.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a soundproof floor structure according to an example of the present invention.

FIG. 2 is a side view of an example of a soundproof flooring according to the present invention.

FIG. 3 is a plan view of the soundproof flooring material of FIG. 2;

FIG. 4 is a side view of another example of the soundproof flooring according to the present invention.

FIG. 5 is a plan view of the soundproof flooring material of FIG.

FIG. 6 is a side view of another example of the soundproof flooring according to the present invention.

FIG. 7 is a plan view of the soundproof flooring material of FIG. 6;

FIG. 8 is a side view of another example of the soundproof flooring according to the present invention.

FIG. 9 is a plan view of the soundproof flooring material of FIG.

FIG. 10 is a side view of another example of the soundproof flooring material according to the present invention.

FIG. 11 is a plan view of the soundproof flooring material of FIG.

FIG. 12 is a side view of another example of the soundproof flooring according to the present invention.

FIG. 13 is a plan view of the soundproof flooring material of FIG.

FIG. 14 is a side view of another example of the soundproof flooring material according to the present invention.

FIG. 15 is a plan view of the soundproof flooring material of FIG.

FIG. 16 is a side view of another example of the soundproof flooring material according to the present invention.

FIG. 17 is a plan view of the soundproof flooring material of FIG.

FIG. 18 is a side view of another example of the soundproof flooring material according to the present invention.

FIG. 19 is a plan view of the soundproof flooring material of FIG. 18.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Soundproof floor structure 2 Plate-shaped waste material 3 Floorboard 4,14,23,29,35,39,45,52 Soundproof floor material 5,12 Space 6,30,40,53 Lower plate 7a, 7b Shock absorbing material 8, 34, 55 Upper plate-like body 9, 10 Screw 11 Floor 13 Hole for screw 15, 21, 24, 26, 33, 37, 42, 47, 4
8,51 Viscoelastic body 16,18,38 Fibrous material 19 Packing material 20 Spring 25 Impact force reducing plate 27 Upper surface space 28 Lower surface space 31 Projection 32,41 Screw hole 36,44 Cavity 43 Pipe 46 Buffer material 49 Impact force relaxation Auxiliary material 50 hole 54 compression spring 56 wood screw 57 extension spring

Claims (12)

[Claims] 1. A soundproof floor structure comprising a plate-shaped scraping material serving as a floor surface forming base and a floor plate supporting the plate-shaped scraping material, wherein floor impact noise is reduced, wherein the plate-shaped scraping material is provided. And a plurality of soundproofing floor materials are arranged between the floorboards, and when the soundproofing floor structure is viewed in a longitudinal section, the soundproofing flooring materials are separated from each other, and between the soundproofing flooring materials. A space is provided, each of the soundproofing floor materials includes a lower plate-like body, a shock absorbing material, and an upper plate-like body, and the lower plate-like body is provided on the floor plate; A side plate-shaped member is provided below the plate-shaped discarded material, and the shock absorbing material is disposed between the lower plate-shaped member and the upper plate-shaped member, and a bang defined in JIS-A-1418 is provided. The maximum instantaneous displacement in the vertical direction of the discarded material due to the impact of a machine is within 10 mm. , Soundproof floor structure. 2. The floorboard comprises a plurality of floor panels, wherein the lower plate-like body connects at least two of the floor panels, and wherein the lower plate-like body corresponds to the floorboard per 1 m ² of surface area of the floorboard. sound-insulating floor structure of the characterized in that it is fixed on the surface area of 0.05m ² ~0.8m ^2, claim 1, wherein. 3. The shock absorbing material is made of a viscoelastic body, and a hollow portion surrounded by the upper plate-like body, the viscoelastic body, and the lower plate-like body is formed. 2. The device according to claim 1, further comprising a through hole, wherein the through hole communicates the hollow portion with the outside of the hollow portion.
Or the soundproof floor structure of 2. 4. The impact absorbing material comprises a compression spring and a viscoelastic body made of at least one material selected from the group consisting of a metal and a plastic. When the and the viscoelastic body are deformed, the compression deformation position of the compression spring is kept higher than the compression limit position of the compression spring, The characteristic according to any one of claims 1 to 3, Soundproof floor structure. 5. The sound-insulating floor material comprises at least two types of sound-insulating floor materials, and each of the two types of sound-insulating floor materials includes a lower plate-shaped member, an impact absorbing material, and an upper plate-shaped member. The impact absorbing material of the soundproof flooring is in contact with the upper plate-like body,
A gap is provided between the shock absorbing material of the other soundproof floor material and the upper plate-shaped body, and when an impact is applied to the plate-shaped waste material, the shock absorption of the other soundproof floor material is performed. The soundproof floor structure according to any one of claims 1 to 4, wherein a material is in contact with the upper plate-shaped body. 6. The sound-insulating floor material includes a plurality of shock-absorbing materials, and when the sound-insulating floor structure is viewed in a longitudinal section, the shock-absorbing materials are separated from each other, and The space is formed between them, The claim 1 characterized by the above-mentioned.
The sound-insulating floor structure according to any one of claims 5 to 10. 7. The sound-insulating floor material includes at least two types of shock absorbing materials, one of which is in contact with the upper plate-like body and the other of which is the upper plate-like material. A gap is provided between the upper shock absorber and the upper shock absorber when the shock is applied to the flat scrap material. The soundproof floor structure according to any one of claims 6 to 13. 8. The soundproof flooring material comprises a tension spring,
The soundproof floor structure according to any one of claims 1 to 7, wherein the tension spring pulls the upper plate-like body and the lower plate-like body so as to draw each other. 9. The sound-insulating floor material includes an impact-relief plate, the impact-relief plate is provided between the upper plate and the lower plate, and the impact-relief plate is provided. The soundproof floor structure according to any one of claims 1 to 8, wherein the shock absorbing material is disposed on upper and lower surfaces of the floor. 10. The shock absorbing material comprises a plurality of shock absorbing materials, and when the soundproof floor structure is viewed in a longitudinal section, the respective shock absorbing materials are separated from each other, and between the respective shock absorbing materials. An upper surface space and a lower surface space are formed, and when the plate-shaped waste material receives an impact, the bending force of each of the shock absorbing materials causes the impact force relaxation plate to bend toward the lower surface space and the upper surface space. 10. The soundproof floor structure according to claim 9, wherein the bending of the impact force relaxing plate is restored by the restoring force of the impact force relaxing plate. 11. At least one of an upper surface and a lower surface of the upper plate-shaped member is provided with at least one kind of impact force-mitigating auxiliary member selected from the group consisting of a fibrous material, a foam, and a porous material. The sound-insulating floor structure according to any one of claims 1 to 10, wherein: 12. A sound-insulating flooring material for forming a sound-insulating floor structure, which is disposed between a plate-like disposing material serving as a floor surface forming base and a floor plate supporting the plate-like disposing material, wherein the soundproofing flooring material is provided. Is provided with a lower plate-like body, a shock absorbing material, and an upper plate-like body, and a plurality of the soundproofing floor materials are arranged between the plate-like scraping material and the floor plate to form the soundproofing floor structure. When the sound-insulating floor structure is viewed in a longitudinal section, the sound-insulating floor members are separated from each other, a space is provided between the sound-insulating floor members, and the lower plate-like member is placed on the floor plate. Provided, the upper plate-shaped body is provided below the plate-shaped discarded material,
The shock absorbing material is disposed between the lower plate and the upper plate, and the maximum instantaneous displacement in the vertical direction of the plate-shaped laminating material due to the impact of a bang machine defined in JIS-A-1418 is 10 mm. A sound-insulating flooring characterized by being within.