JP3430202B2 - Soundproof floor structure and soundproof floor material - Google Patents

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 heavy floor impact sound of a building, and more particularly to a structure for absorbing and relaxing the vibration force of the floor impact force.

[0002]

2. Description of the Related Art Conventionally, there have been many demands for reducing floor impact noise of buildings, and among them, lightweight floor impact noise can be improved by relatively improving floor surface materials. With the results obtained, soundproof floors are not only widely known now, but also widely used in reality.

On the other hand, as a countermeasure against heavy floor impact noise, the above-mentioned improving means is widely used as a common sense in a rigid structure building such as RC structure in which the rigidity of columns and beams can be easily increased and the thickness of floor slab can be easily increased. However, in general detached houses and low-rise apartments, since the flexible structure is the mainstream, the above method is not widely used because it increases the rigidity of columns and beams and the cost required to increase the floor weight. I haven't arrived.

[0004]

The inventor of the present invention has found that the floor itself is
We considered various soundproofing measures such as floor support method, floor / ceiling space use, ceiling support method, and improvement of the ceiling itself. As a result, it was clarified that the heavy floor impact sound is reduced by absorbing and relaxing the excitation force of the floor impact source.

On the other hand, absorption and relaxation of the vibration force of the floor impact source has not been challenged in the past. The main cause is that the 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 constant impact force characteristic is exhibited regardless of. Further, since the action force of the tire is extremely long in duration, it was thought that the effect was small even if the force was reduced.

[0006] In such conventional techniques, detached houses and low-rise apartments are mainly used for flexible structures in terms of cost and practicality, and heavy floor impact sound L _H -55 has not been sufficiently solved. The appearance 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 vibration force of the floor impact source, can be easily installed, and requires almost no design change of the floor skeleton.
The purpose is to obtain a soundproof floor structure that minimizes the cost increase.

[0008]

Means for Solving the Problems The present invention is provided with a plate-like waste material that serves as a floor surface forming base and a floor board of a flexible structure that supports the plate-like waste material, and the floor board is a floor slab or wood. Floor pad
It is a soundproof floor structure consisting of a plurality of floor panels made of flannel, in which floor impact sound is reduced, and a plurality of soundproof floor materials are arranged between the plate-shaped waste material and the floor board, When the floor structure is viewed in a vertical cross section, the soundproof floor materials are separated from each other, a space is provided between the soundproof floor materials, and the soundproof floor materials absorb impact with the lower plate-shaped body. And an upper plate-shaped body, wherein the shock absorbing material is the lower plate-shaped member.
Is disposed between the body and the upper plate-like body, and the lower plate-like body per 1 m ² surface area of the floor plate,
You are fixed on the surface area of 0.05m ² ~0.8m ²
The lower plate has at least two floor panels.
It is connected and integrated, the upper plate-shaped body is provided below the plate-shaped waste material, and the maximum instantaneous displacement in the vertical direction of the plate-shaped waste material due to the impact of a bang machine defined in JIS-A-1418. Is within 10 mm, and relates to a soundproof floor structure. Further, the present invention provides a plate that serves as a base for forming a floor surface.
It is equipped with a waste material and a floor board that supports the waste material.
The soundproof floor structure reduces the floor impact noise.
Plural soundproof floor materials are placed between the plate-shaped waste material and the floor board.
When the soundproof floor structure is viewed in a vertical section,
Each soundproof floor material is separated from each other, and between each soundproof floor material
A space is provided in each of the soundproof floor materials and
And a shock absorber and an upper plate-shaped member, and the lower plate
Is provided on the floor plate, the upper plate-like body
Is provided below the plate-shaped waste material, and
A material is disposed between the lower plate and the upper plate.
Of the bang machine specified in JIS-A-1418.
Maximum instantaneous displacement in the vertical direction of the plate-shaped waste material due to impact
Is within 10 mm, and the impact absorbing material is a viscoelastic body.
The upper plate-shaped body, the viscoelastic body, and the lower plate-shaped body
The viscoelastic body has a hollow portion surrounded by
Has a through hole, and the through hole is
Related to the soundproof floor structure that communicates with the outside of the hollow part
It is a thing.

The present inventor has studied a structure for absorbing and relaxing the vibration force of the floor impact source. As a result, the inventor
By installing a sound-proof floor material that positively allows the deformation of the plate-shaped waste material that forms the base of the floor between the existing floor board and the plate-shaped waste material, it is possible to significantly improve the heavy floor impact sound. The present invention has been completed by locating and conducting many experiments.

According to the present invention, a plurality of soundproof floor materials are provided separately between a plate-like waste material and a floor board, which are a base forming a floor, and these soundproof floor materials absorb and relax the floor impact force. , In the space between each soundproof floor material, the deformation of the plate-shaped waste material itself that directly receives impact force is allowed to reduce the transmission of the vibration force to the floor board and significantly reduce the radiated sound from the floor board. It is a thing.

Since the plate-shaped waste patch near the floor surface is in direct contact with the decorative plywood or the like on the floor surface, a structure that positively allows the deformation of the plate-shaped waste patch has not been used. This is because if the floor surface is deformed, an uncomfortable feeling will occur when walking on the floor surface and the structures and the like installed on the floor surface will become unstable.

However, according to the research conducted by the present inventor, the JIS
-The maximum instantaneous displacement in the vertical direction of the plate-shaped waste 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, the discomfort during walking did not become a problem and the heavy floor impact sound could be significantly improved.

The soundproof flooring material according to the present invention is, by itself,
Absorbs and alleviates floor impact. This soundproof floor material has a lower plate-shaped body, a shock absorbing material, and an upper plate-shaped body as essential components. This lower plate-like body is firmly fixed to the floor plate and can support the shock absorber. The floor board according to the present invention is an ALC plate, a PC plate, a floor extruded cement plate supported by a beam or a barrel difference, a wooden floor panel supported by a beam or joists, and a base forming a floor. A base material that supports a plate-shaped waste material.

Further, in the present invention, the upper plate-shaped member is smaller than the plate-shaped waste material, is less likely to be deformed, and directly receives the impact force of the floor. Therefore, the impact force received by the plate-shaped waste material is dispersed. By doing so, it has the role of making the amount of deformation of the plate-shaped waste patch constant. The deformation thus generated is absorbed and relaxed by the impact absorbing material on the lower plate-shaped body.

In the present invention, a plurality of such soundproof floor materials are used, these soundproof floor materials are separated from each other, and a space is provided between each soundproof floor material. In such a floor structure, a large impact force applied to the floor is dispersed in the separated soundproof floor materials to be absorbed and relaxed, and deformation of the plate-shaped waste material is allowed in the space provided between the soundproof floor materials. Since the vibration itself of the plate-shaped waste material is also easily damped, the displacement amount and the noise can be suppressed to be small.

According to the soundproof floor structure of the present invention, a plurality of soundproof floor materials are provided at a distance between the flooring board and the floorboard for forming the floor surface. 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, there is no need to increase the rigidity of the structure of the building itself, or increase the floor rigidity or the floor weight. Therefore, a general detached house such as a wooden structure, two-by-four structure or a steel frame structure or a low-rise building Especially suitable for apartment buildings.

[0018]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical cross-sectional view of an example soundproof floor structure of the present invention. FIG. 2 is a side view of an example soundproof flooring material according to the present invention, and FIG. 3 is a plan view of the soundproofing floor material of FIG. Figure 4
~ Fig. 19 is a side view or a plan view of another example of a soundproof flooring according to the present invention.

As shown in FIG. 1, a soundproof floor structure 1 according to an example of the present invention includes a plate-shaped waste patch 2 serving as a floor surface forming base and a floor plate 3 supporting the plate-shaped waste patch 2. This soundproof floor structure 1
A plurality of soundproof floor materials 4 are arranged between the plate-shaped waste material 2 and the floor board 3. The soundproof floor members 4 are separated from each other,
A space 5 is provided between each soundproof flooring 4. Further, each soundproof flooring 4 includes a lower plate-shaped body 6, shock absorbing materials 7a and 7b, and an upper plate-shaped body 8. The lower plate-shaped body 6 is fixed to the floor plate 3 with screws 9, and the upper plate-shaped body 8 is fixed to the bottom of the plate-shaped scraping material 2 with screws 10. Shock absorber 7a,
7b is arranged between the lower plate-shaped body 6 and the upper plate-shaped body 8. In this soundproof floor structure 1, the maximum instantaneous displacement amount in the vertical direction of the plate-shaped waste material 2 due to the impact of the bang machine specified in JIS-A-1418 is within 10 mm. It is formed.

Although not shown in FIG. 1, a plurality of floor panels such as floor slabs and wood floor panels can be used as the floor board 3 in the present invention. In this case, at least two floor panels are connected by the lower plate-shaped body 6 as shown in FIG. Then, the floor panels can be firmly connected and integrated. The integrated panel thus formed has a larger area and heavier weight than the individual floor panels, and prevents a 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. If the lower plate member occupies the area of this range, a plurality of floor panels can be fixed and the soundproofing performance can be improved.

In the present invention, as shown in FIG. 1 and, more specifically, FIG. 2 and FIG. 3, the shock absorbing material in which the upper plate-shaped body 8 and the lower plate-shaped body 6 of the soundproof flooring 4 are a plurality of prisms. It is preferable that the shock absorbers 7a and 7b are sandwiched, the shock absorbers 7a and 7b are separated from each other, and a space 12 is formed between the shock absorbers. Such a space allows the upper plate to be deformed, and serves to damp the vibration of the upper plate due to the impact from the floor. In the soundproof flooring 4 of this example, the upper plate-shaped body 8 is set to be slightly smaller than the lower plate-shaped body 6,
Each of the shock absorbers 7a and 7b is composed of one pair, and the lower plate-shaped body 6 is provided with a screw hole 13.

In the present invention, not only the soundproof floor material 4 of the examples of FIGS. 1 to 3 but also various soundproof floor materials can be used. In particular, the number of impact absorbing materials used in the present invention may be one for each soundproof floor material.

In the present invention, the side view of FIG. 4 and FIG.
The soundproof floor material of the example as shown in the plan view of FIG. As shown in FIG. 4, the soundproof flooring 14 includes a viscoelastic body 15 as an impact absorbing material and a fibrous material as an impact absorbing material between the upper plate-shaped body 8 and the lower plate-shaped body 6. 16 and 16 are stacked in the height direction to be provided in plural. Also, FIG.
As shown in FIG. 5, five shock absorbers 1 are provided on the lower plate-like body 6.
5 are provided at the four corners and in the center, and an upper plate-shaped body 8 is provided thereon in a form slightly smaller than the lower plate-shaped body 6.

As described above, according to the present invention, at least one of the upper surface and the lower surface of the upper plate-like body has at least one kind of impact force relaxation auxiliary material selected from the group consisting of fibrous material, foam and porous material. Can be provided. Such a shock force relaxation auxiliary material can reinforce the shock absorption and relaxation capacity of the shock absorbing material, and is extremely effective in absorbing vibration and preventing noise generation.

In the present invention, the side view of FIG. 6 and FIG.
The soundproof flooring material of the example shown in the plan view 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 force relaxation auxiliary material is placed on the upper surface of the upper plate-shaped body 8, and the lower plate-shaped body 6 is provided. The packing material 19 is provided in layers on the lower surface of the upper plate 8
Between the lower plate member 6 and the lower plate member 6 as a shock absorber.
And a viscoelastic body 21 having a height lower than that of the spring 20, and the spring 20 supports the upper plate-shaped body 8.

In the soundproof flooring material 17 of this example, as shown in FIG. 7, four springs 20 are provided at four corners of the soundproofing floor material 17, and a total of five springs 20 are provided at the center and the center of the soundproof flooring material 17. The prismatic viscoelastic body 21 is provided, and the spring 20 and the 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 by the impact applied to the plate-shaped waste material. This is to prevent the compression spring from pushing the upper plate-shaped member or the lower plate-shaped member.

Further, in the present invention, as shown in FIGS. 6 and 7, rubber or foam is provided on at least one of the surface of the lower plate contacting the floor plate or the surface of the lower plate contacting the shock absorber. And at least one selected from the group consisting of fibrous substances
A seed cushion may be provided. Such a cushioning material has a meaning that such a situation can be avoided when an abnormal noise is generated, because the floor plate is in direct contact with the lower plate-shaped body and the shock absorbing material. Examples of such cushioning material include felt, non-woven fabric, rubber, plastic sheet, foam sheet, cork and the like.

Further, in the present invention, as shown in the examples of FIGS. 6 and 7, the soundproof floor material 17 is provided with at least two kinds of shock absorbing materials 20, 21 and one of the shock absorbing materials 20 has an upper plate. It is possible to make a gap 22 between the impact absorbing material 21 and the upper plate-shaped body 8 while being in contact with the plate-shaped body 8. Such a two-stage structure shock absorber can absorb and reduce the floor impact force in stages, and can reduce the displacement amount while extending the duration. Due to the different heights of the shock absorbers, the shock absorbers with a high height are impacted and deformed, and the shock absorbers with a low height are impacted and deformed for the first time. Therefore, deformation can be reduced.

Although not particularly shown, in the present invention, in a plurality of soundproof floor materials as shown in FIG. 1, these soundproof floor materials are composed of at least two kinds of soundproof floor materials. Each of which has a lower plate-like member, a shock absorber and an upper plate-like member, the shock absorbing member of one soundproof floor material is in contact with the upper plate member, and the shock absorbing member of the other soundproof floor member. Has a gap between the upper plate and the upper plate, and when a shock is applied to the plate waste, it is possible to make the shock absorber of the other soundproof floor material and the upper plate contact. it can.

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

In the present invention, the side view of FIG. 8 and FIG.
An example soundproof floor material as shown in the plan view of FIG. As shown in FIG. 8, in this soundproofing floor material 23, a viscoelastic body 24 as a shock absorbing material is provided on the lower plate-shaped body 6,
An impact force relaxation 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 vertically overlapping the lower viscoelastic body 24. .
An upper surface space 27 and a lower surface space 28 are formed between the viscoelastic bodies.

In the plan view shown in FIG. 9, this soundproofing floor material 23
Has a prismatic lower viscoelastic body 24 at the four corners and the center of the lower plate-shaped body 6, and an impact force relaxation plate 25 having the same size as the upper plate-shaped body 8.
On the upper side, four upper viscoelastic bodies 26 are provided at positions where the lower viscoelastic body 24 does not exist, and the upper plate-shaped body 8 is provided on the upper viscoelastic body 26.

In the present invention, such an impact force alleviating plate is provided, and the impact force alleviating plate is provided between the upper plate-like member and the lower plate-like member, and the upper and lower surfaces of the impact force alleviating plate are provided. It is possible to use a soundproofing floor material in which a shock absorbing material is arranged. In such a soundproof floor material, the shock absorbing plate receives a shock in a state of being sandwiched between the upper plate-like body and the lower plate-like body in the soundproofing floor material, and the upper viscoelastic body is deformed. The shock absorbing plate is deformed, while the lower viscoelastic body is deformed, the central impact force relaxing plate is restored, and further the lower viscoelastic body is deformed, so that the movement is continuously performed. As a result, the time for which the impact force of the soundproof flooring material is received becomes longer, and the effect of absorbing and absorbing the impact force is enhanced. In this way, when the impact force relaxation material is divided into upper and lower parts by one plate material, the impact can be absorbed even by the deformation stress of the plate material in between, so that there is a synergistic effect with the vibration energy loss of the upper and lower impact force relaxation materials. Can be expected.

Further, as shown in FIGS. 8 and 9, the shock absorbing material is composed of a plurality of shock absorbing materials and these shock absorbing materials are separated from each other, and the upper space and the lower space are provided between the respective shock absorbing materials. Is formed, the impact force relaxation plate bends toward the lower space and the upper space due to the bending stress of these impact absorbing materials when the plate-shaped waste material is subjected to impact, and the restoring force of the impact force relaxation plate itself. By restoring the bending of the impact force alleviating plate by this, the displacement margin of the impact force alleviating plate can be further increased. In such a configuration, by increasing the restoring force of the impact force alleviation plate, a transmission time lag of the impact force to the lower viscoelastic body occurs, so that the time for impact absorption and relaxation can be made longer, The impact force is further reduced.

In the present invention, the soundproof floor material of the example 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, in this soundproof flooring 29, the lower plate-shaped body 30 is an iron plate 4.5 mm thick × 150.
mm × 100 mm, both sides of the short side of the iron plate 30 are bent upward at about 90 ° to form protrusions 31 to enhance rigidity of the lower plate-like body, and screw holes 32 are provided at four corners. In this example, a cylindrical viscoelastic body 33 is adhered to the upper plate upper body 34 to form a 12 mm thick 100 mm square plywood. As shown in the plan view of FIG. 11, the soundproof floor material 29 of this example is provided with one cylindrical viscoelastic body 33 as a shock absorbing material in the center thereof, and a square upper plate-shaped body 34 is provided on the shock absorbing material. Is provided.

As described above, in the present invention, the lower plate-like member is described, but it is not limited to a plate-like member and may be provided on the floor plate as long as it can effectively fulfill these purposes and roles. As long as it is a member that absorbs and absorbs impact force, it may have various sectional shapes such as a pedestal. Especially when the lower plate is made of metal such as iron, bending and welding of the panel can be easily performed at low cost, and bending rigidity can be remarkably increased, so that the object and role of the present invention can be more exerted. This is an effective means. The lower plate-shaped body and the upper plate-shaped body having various shapes can be used as long as they exhibit such effects.

Further, in the present invention, it is possible to use the soundproof floor material of the example as shown in the side view of FIG. 12 and the plan view of FIG. In this soundproofing floor material 35, on the lower plate-shaped body 6,
As a shock absorber, a square pipe-shaped viscoelastic body 37 having a cavity 36 formed in the central portion is provided, an upper plate-shaped body 8 is provided, and a fibrous material 38 is provided on the upper surface of the upper plate-shaped body 8. ing. Further, as shown in the plan view of FIG. 13, in these soundproof floor materials 35, nine impact absorbing materials can be provided on the lower plate-shaped body 6.

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

Further, in the present invention, the soundproof flooring material of the example as 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 the soundproof flooring 39, screw holes 41 are provided at four corners of the lower plate 40,
A pipe-shaped viscoelastic body 42 is provided in the central portion on the lower plate-shaped body 40, and a small-diameter pipe 43 penetrating a side wall of the pipe-shaped viscoelastic body 42 is a cavity 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. Further, as shown in the plan view of FIG. 15, this soundproofing floor material 39 is rectangular and has screw holes 41 at four corners, a pipe-shaped viscoelastic body 42 in the center, and a pipe-shaped viscoelastic body 42. A small-diameter pipe 43 that connects the inner cavity 44 and the outside of the pipe-shaped viscoelastic body 42 may be provided so as to penetrate the pipe-shaped viscoelastic body 42. On the pipe-shaped viscoelastic body 42, the square upper plate-shaped body 8 can be provided.

In such a soundproof flooring 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 bound by the upper and / or lower plate-like body, By connecting the cavity to the outside with, it is possible to perform impact energy loss due to the air spring or the resistance to push the air from the air spring through the pores, so that the impact time by the air spring is extended and the impact force is increased. The effect of absorbing and relaxing is increased, and the maximum displacement amount can be reduced.

Further, in the present invention, it is possible to use the soundproof floor material of the example as shown in the side view of FIG. 16 and the plan view of FIG. As shown in FIGS. 16 and 17, in this soundproofing floor material 45, a cushioning material 46 is provided on the entire lower surface of the lower plate-shaped body 6, and a trapezoidal viscoelastic body 47 is provided on the upper surface of the lower plate-shaped body 6. One viscoelastic body 48 is provided at the four corners, and the height is lower than the viscoelastic body 47 at the four corners. The upper plate-shaped body 8 is provided so as to be in contact with the upper surface of the viscoelastic body 47, and the impact force relaxation auxiliary material 49 is provided on the entire upper surface thereof. Nine holes 50 are provided in the impact force relaxation auxiliary material 49, and a small viscoelastic body 51 is provided in the hole 50 portion with the same thickness as the impact force relaxation auxiliary material 49.

As described above, in the present invention, the impact force relaxation auxiliary member is provided on the upper surface of the upper plate-like member, and the impact force relaxation auxiliary member has the through hole in the thickness direction. If the viscoelastic body is disposed in the, the compression set of the impact force relaxation auxiliary material can be reduced. Further, in such a soundproof flooring material, the restoring force of the impact force relaxation auxiliary material and the restoring property of the viscoelastic body such as rubber are utilized, and the shock absorbing force is further increased when absorbing the shock.

Further, in the present invention, the soundproof floor material of the example as 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 floor material 52,
An upper plate 55 having the same size as the lower plate 53 is provided, except that the compression spring 54 is installed on the lower plate 53 and four corners are cut. Upper plate 55 and lower plate 5
Two pairs of tension springs 57, which are fixed by wooden screws 56 and are subjected to a slight tensile stress, are provided at symmetrical positions in the center of the side surface of No. 3. Furthermore, as shown in FIG.
2, a compression spring 54 as a shock absorber has a lower plate 53
Is provided at the center between the upper plate 55 and the upper plate 55, and at the center of each side of the upper plate 55 and the lower plate 53, the tension spring 57 exerts some tensile stress with the wooden screw 56. Can be fixed over.

As described above, in the present invention, the soundproof flooring material is provided with the tension spring, and if the tension spring pulls the upper plate-shaped member and the lower plate-shaped member toward each other, the impact of the compression spring or the like will occur. When repulsive vibration due to the impact force occurs due to the absorbing material, the damping of such vibration can be accelerated.
If such a vibration damping mechanism is used, noise on the low frequency side can be efficiently reduced. Further, the tension spring can also receive a shock, and further, the tension spring can prevent a bottom impact phenomenon of the upper plate-like body due to the shock absorber.

Hereinafter, the present invention will be described in detail, while explaining the operation associated with the structure of the present invention. Floorboards according to the present invention may be a conventionally from the plate-like material plate捨貼material has been mounting location. Examples of flexible housings and low-rise apartments include ALC plates, PC plates, hollow extrusion cement plates, and other floor slabs supported by beams and barrel differences, and wooden floor panels. Since the weight of each of these is relatively light and the rigidity is not large, it is the main reason why it is difficult to improve the heavy floor impact sound in a flexible structure house. Further, generally, the floor plate is mounted on a beam or the like via a vibration damping material so as not to move more than an allowable amount with a fall prevention function or lightly fixed, which also causes a difficulty in reducing heavy floor impact sound.

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

Next, the soundproof flooring material that absorbs and absorbs the floor impact force is an integral body of the lower plate-like body, the shock absorbing material and the upper plate-like body, and is integrated into the lower plate-like body. The role in the present invention is that it is firmly fixed to the floor plate below it,
If the floorboard consists of multiple panels, it acts as a link between these panels. In this case, since the plurality of panels are formed as one floor board, the floor board as a whole is heavy and the rigidity is increased.

In order to effectively exert such an object and role, it is more effective to firmly fix the lower plate-like member to the floor plate with screws, bolts, nails or the like. Since the rigidity is further increased, good results can be obtained. 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, non-woven fabric, rubber, plastic sheet, foam sheet, cork, etc. are interposed between the floor plate and the lower plate-like body as a cushioning material in order to avoid generation of abnormal noise. You can also do things.

In the present invention, the lower plate-like member is described. However, it is possible to provide the lower plate-like member on the floor plate even if it is not particularly plate-shaped so long as it can effectively fulfill these purposes and roles. As long as it is a member that absorbs and relaxes, various cross-sectional shapes such as a cradle may be used. In particular, when the lower plate-shaped body is made of metal such as iron, it can be easily manufactured at low cost such as bending and welding of iron plate, and the bending rigidity can be remarkably increased. This is an effective way to do it. Therefore, the lower plate-shaped body is particularly preferable as long as it is processed in this way. In any case, since the lower plate-shaped body is made into a panel shape and fixed to the floor plate with screws, etc., it is easier to carry out if it is slightly larger than the upper plate-shaped body. It is preferable to make notches in the four corners.

Next, the shock absorber will be described. In 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 bent strip, a bent strip, or a flat strip. Further, a structure in which a compression spring receives an impact and a tension spring prevents bottom abutment and accelerates vibration damping may be used together. In the present invention, since the soundproof floor material is applied to the floor, the feeling of walking becomes a very important factor when the floor is finished. It is no exaggeration to say that shock absorbers greatly affect the feeling of walking.

Therefore, the inventor of the present invention found that the maximum instantaneous displacement was obtained by correlating the walking feeling of many people with the maximum displacement when a floor machine is impacted with a bang machine specified in JIS-A-1418. It is understood that the absolute amount is within 10 mm.

Further, it has been found that the seasickness phenomenon is caused more by the relationship between the roll and the damping time than the vertical displacement amount. This phenomenon is hard to move up and down when the plates and rubber are alternately stacked in layers, such as a seismic isolation material, and it is easy to roll sideways.However, in the present invention, shock is absorbed. , The soundproof floor material is displaced up and down, and problems with this level of rolling are unlikely to occur.

Based on the above knowledge, the maximum displacement is to use a progressive spring as an impact force relaxation mechanism for each soundproof flooring according to the present invention, which is a progressive spring in the initial stage of deformation. It is desirable to reduce the amount. Further, as the shock absorbing material, it is effective for the rolling to make the height as low as possible.

Further, in order to shorten the damping time, it is possible to make a great improvement by using a plurality of shock absorbing materials, or by combining a linear spring with a compression spring and a tension spring.

Next, a viscoelastic body as a shock absorber will be described. If the viscoelastic body is a very flexible viscoelastic body having a hardness of about 3 to 60 on a C type hardness meter of SRIS-0101,
Restorability is good. From this point of view, a type that takes a long time to restore and a type that uses a normal vulcanized rubber and an elastomer and has a JIS-A hardness meter of about 30 to 75 and a shape that is easily deformed are particularly preferable in the present invention. It is suitable.

The former viscoelastic body of the type that takes a long time to restore can be said to be a suitable material that is a liquid polymer that is liquid at room temperature and has two or more reactive groups per molecule.
Table 1 shows examples of combinations 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, a combination of a telechelic polymer having a hydroxyl group at the molecular end and a curing agent having two or more isocyanate groups per molecule is excellent in shock absorption relaxation 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, or the like, Examples thereof include polyether polyol, polyester polyol, urethane acrylic 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, prepolymers having a terminal isocyanate group, blocked isocyanates and the like. These curing agents can be used alone or in combination, and the molar ratio is 0.5 NCO / OH.
It can be used as ~ 1.5 NCO / OH.

The viscoelastic body of the present invention, which takes a long time to restore, may be one obtained by the above combination, but from the viewpoint of impact absorption relaxation property, durability, economical efficiency, etc., it is a plasticizer. , Bituminous materials, tackifiers, fillers, antioxidants, catalysts, coupling agents, flame retardants, surfactants, defoamers, etc. by mixing substances commonly used in the rubber industry and paint industry. Can be used.

The viscoelastic body of the flexible type, which is suitable for the present invention and which takes time to restore, is flexible and therefore can be deformed when an impact is applied between the upper plate-shaped body and the lower plate-shaped body. Since the side surface is deformed at the entire circumference of 360 ° in the vertical direction of the viscoelastic body, and the displacement amount is extraordinarily large, the shock absorption time is inevitably long and the shock absorption and relaxation capability is large. Become.

When a plurality of objects having such performances are provided between the upper plate-shaped member and the lower plate-shaped member to receive an impact, the deformation surface area of the side surface is far larger than that of one large-shaped member. The sum of is large, and the impact force is dispersed individually,
The ability to absorb and relax shocks becomes greater.

This condition is that the ratio of the sum of the upper and lower installation areas of the viscoelastic body per soundproof floor material (S ₁ ) and the sum of the side surface deforming surface areas (S ₂ ) is S ₂ / S ₁ = 0. Good range is from 2 to 5. By further advancing this idea, a more flexible type of viscoelastic body has one characteristic in resilience. When the sample of the viscoelastic body was 50 mmφ and 30 mm thick, it was immediately unloaded after 25% compression. At the same time, a material exhibiting a resilience of 70% to 90% after 1 minute and a resilience of 95% or more after 10 minutes has a high impact force relaxing effect.

From these viewpoints, in the present invention, the shock absorbing material made of the viscoelastic body is the sum of the ground contact areas of the upper plate-like body and the lower plate-like body of the viscoelastic body per one soundproof floor material ( S ₁ )
And the sum of surface areas of deformable side surfaces of the viscoelastic body (S ₂ ) is S ₂ / S ₁ = 0.2 to 5, and the viscoelastic body has a compression test according to JIS-K-6301. 50 according to the method
When the thickness is 30 mm in mmφ, it is preferable to unload the load immediately after being compressed by 25% and to show the resilience of 70% to 90% after 1 minute and 95% or more after 10 minutes.

Such a viscoelastic body is instantly restored, but it takes time to completely restore it, and a phase difference occurs before the impact is transmitted to the floor plate, so that the impact is absorbed and relaxed. Considered to be effective.

In the soundproof flooring, if viscoelastic bodies are provided above and below through the impact force alleviating plate, the viscoelastic body is impacted by being sandwiched between the upper plate-like body and the lower plate-like body. It will be received, the upper viscoelastic body will be deformed, the impact force relaxation plate will be deformed,
While the lower viscoelastic body is deformed, the impact force relaxation plate in the center is restored, and the lower viscoelastic body is further deformed continuously. As a result, the time for which the impact force of the soundproof flooring material is received becomes longer, and the effect of absorbing and absorbing the impact force is enhanced.

Further, by disposing the viscoelastic bodies provided above and below the impact force alleviating plate so that the upper and lower viscoelastic bodies do not overlap each other in the vertical direction, the displacement margin of the impact force alleviating plate can be increased. In such a configuration, by increasing the restoring force of the impact force alleviation plate, a transmission time lag of the impact force to the lower viscoelastic body occurs, so that the time for impact absorption and relaxation can be made longer, The impact force is further reduced.
As one of the functions of the viscoelastic body, when the shock absorbing material is used in combination with the compression spring, it also has an effect of preventing bottom compression because the compression spring is not compressed beyond the compression limit.

The impact force alleviating plate is used to disperse the impact force by dividing the viscoelastic body and the spring into upper and lower two stages to facilitate the absorption and relaxation of the impact, and the impact force alleviating plate itself is deformed. Impact energy loss due to Further, by dividing the shock absorbing material into upper and lower parts by the impact force alleviating plate, there is an advantage that the thickness of the shock absorbing material can be made thin and the restoring property is good for a long period of time.

By further advancing such an idea and changing the height of the viscoelastic body in two steps or three steps, the highest viscoelastic body is first impacted and the height of the second step is increased. As a result of the impact being received by the viscoelastic body having a height of 3 degrees and the viscoelastic body having the height of the third stage, the effect of absorbing and relaxing the impact force is enhanced.

Further, by providing a cavity inside the viscoelastic body and confining the cavity with the upper and / or lower plate-like body, or by communicating the cavity with the outside by a pore, the air spring or the air spring can be made into a pore. It is possible to reduce the impact energy loss due to the resistance of pushing air out through, and to increase the effect of absorbing the impact force by lengthening the time of impact by the air spring and reducing the maximum displacement amount.

Further, among the viscoelastic bodies according to the present invention, ordinary vulcanized rubber or elastomer is 30 to 30 by JIS-A hardness tester.
For the viscoelastic body of the type in which about 75 is formed into a shape that is easily deformed, 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, and fillers, plasticizers, various antioxidants, vulcanizing agents, vulcanization accelerators, vulcanization aids, etc. commonly used in the rubber industry are required. It may be blended according to.

These viscoelastic bodies must be appropriately devised in shape so that they can easily absorb and absorb impact and can be easily restored. In addition, as described above, the height is changed so that the part that receives a shock after exceeding a certain amount of deformation has two or three steps, so that as the amount of deformation increases, the area to be impacted increases, Therefore, it is preferable to lengthen the impact absorption time.

Examples of the shock absorbing auxiliary material that can be used in the present invention include fibrous materials, foams, and porous materials, which are used for adjusting the shock absorbing / relaxing ability and displacement of the shock absorbing material. It is valid.

First, the fibrous material will be described. The fibrous material, even if combining a single fiber or a plurality of fibers, it is practically impossible to obtain a soundproof flooring material that absorbs and alleviates the floor impact force only in the form of a fibrous material, It is positioned to be able to improve the impact absorption and relaxation effect only when used in combination with the plastic or metal spring or viscoelastic body described above. In general, a fibrous material is deformed at a low stress, and a compression set is likely to occur.

The fibrous material suitable for 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 is high between the fibers and the resilience is good, or the number of needle punches is increased to reduce the compression set from the beginning. Is suitable. Further, it is desirable that the thickness is 10 mm or less so that the compression set is reduced. Furthermore, holes may be provided in some places, and rubber with a small ground contact area and high resilience is placed in the holes to utilize the resilience of the rubber for restoration and also to use the impact absorption power of the fiber at the time of shock absorption. it can.

Next, the foam will be described. Similar to the fibrous material described above, this foam also has an auxiliary role of further improving the shock absorption and relaxation effect of the spring of plastic or metal or the viscoelastic body. 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 that the compression set will not increase due to long-term use and to use a foam with a low expansion ratio. is there. Further, as described in the section of the fibrous material, it is also desirable to provide a rubber or the like having a good restoring property in places of the foam layer to prevent the restoring force from deteriorating.

Next, the porous material will be described. The porous material referred to in the present invention refers to particles having rubber elasticity, cork particles, foam particles alone or in combination and bonded and molded by a binder, and like the fibrous material and the foam, the floor material is used. It is almost impossible to absorb and relieve impact force only with a porous material, and it is desirable to use it as an auxiliary material for impact relief and absorption of a plastic or metal spring or viscoelastic body.

These impact force relaxation auxiliary materials may be sandwiched between the lower plate-shaped body and the upper plate-shaped body together with the shock absorbing material, but are used between the upper plate-shaped body and the plate-shaped waste material. Since the pressure receiving area is increased several times, it is possible to reduce the amount of compression set and it is easy to use the viscoelastic body for assisting the restoring property, which is preferable.

Next, the upper plate will be described. The upper plate-shaped body and the lower plate-shaped body impact the floor impact force on multiple impact force relaxation materials at the same time in the final state when multiple impact absorption materials are impacted at the same time. The force is instantly dispersed, and since there are multiple impact force relaxation materials, it has the role of vertically displacing without lateral displacement. Further, since it also has a role of fixing the upper plate-shaped waste material, it is preferable to use wood screws, plywood that is easy to nail, or particle board. Further, since the upper plate-shaped body is pushed by the plate-shaped scraping material, the plate thickness is not particularly limited. However, when the workability is emphasized, it is not always necessary to stop all of the plate-shaped waste material and the upper plate-shaped member, and it is particularly improved as a heavy floor impact sound even if it is fixed around or partially, or not at all. Need of 63H
It has no effect on z or 125 Hz. It tends to be slightly higher at 250 Hz or higher.

Further, since the upper plate-shaped member is attached to the floor plate as a soundproof flooring material provided with a shock absorbing material between the upper plate-shaped member and the lower plate-shaped member, it is easier to disperse the shock as much as possible. For this reason, it is preferable to use it at 100 mm square or more, and if it is too large, the workability deteriorates. In addition, the upper plate-shaped body is made slightly smaller than the lower plate-shaped body to provide a space for fixing a screw or the like to the lower plate-shaped body with a drill, or the four corners of the upper plate-shaped body are cut out,
It is better to provide a drill fixing space by offsetting it from the lower plate-like member by 45 ° or an appropriate angle. The shape of the upper plate-shaped body is not particularly limited, and may be square, rectangular, triangular, circular, or the like.

[0085]

EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples. Example 1 The 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 the four corners. Next, the viscoelastic body of the compounding formulation example 1 shown in Table 2 was produced in the shape of a prism having a thickness of 15 mm × 40 mm × 40 mm. Using such a viscoelastic body as an impact absorbing material, an upper plate-like body (12 mm thick x 250 mm x 250 m) is formed with an adhesive.
m plywood) and the lower plate-like body with an adhesive to produce a soundproof flooring. FIG. 2 is a side view of the soundproof flooring and FIG. 3 is a plan view thereof.

[0086]

[Table 2]

A plurality of ALC (100 m
m thickness x 650 mm x 1800 mm) was used as a floor board, and was attached with a DAC screw of 90 mm length at a pitch of about 600 mm in the width and length directions of the ALC so as to straddle between the ALCs. After that, in the width direction of the ALC, a particle board (12 thickness x 900 mm x 1800) as a plate-shaped scraping material.
mm), and a particle board of the same size was further laminated in the direction orthogonal to the lower particle board to form a floor base surface to manufacture the soundproof floor structure shown in FIG.

Example 2 A soundproof flooring material shown in FIGS. 4 and 5 was produced. The lower plate-shaped body is a 12 mm thick × 300 mm × 300 mm plywood, the upper plate-shaped body is a 12 mm thickness × 250 mm × 250 mm plywood,
The viscoelastic body of the compounding formulation example 2 shown in Table 3 was 15 mm thick × 50
A cylindrical column of mmφ was used, and a polyester core-sheath structure non-woven 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. A side view of the soundproof flooring material produced by the above method is shown in FIG. 4, and a plan view thereof is shown in FIG.

[0089]

[Table 3]

As in Example 1, this soundproofing floor material was spanned between the ALCs of the floor board ALC (100 mm thickness × 600 mm width × 1800 mm length) so that the width direction and the length direction of the ALC were about 600 mm each. The pitch was set and fixed with a DAC screw having a length of 90 mm. Further, in the same manner as in Example 1, 12 mm thickness × 900 mm width × 1800 is placed on the soundproof flooring material.
A particle board with a length of mm is used as a plate-like attachment material, the lower particle board is orthogonal to ALC, and the upper particle board is orthogonal to the lower particle board.
A soundproof floor structure was manufactured by fixing the upper plate-shaped body of the soundproof floor material and two particle boards with wooden screws to form a floor base surface.

Example 3 A soundproof flooring material shown in FIGS. 6 and 7 was manufactured. The lower plate-shaped body is a 12 mm thick × 300 mm × 300 mm plywood, the upper plate-shaped body is a 12 mm thickness × 250 mm × 250 mm plywood,
Next, the viscoelastic body shown in the compounding formulation example 1 of Table 2
It has a prismatic shape with a thickness of 40 mm x 40 mm, and is attached to the lower plate-shaped body at five points in the center and center of the side with adhesives. Furthermore, coil compression springs 20 mm high are provided at the four corners, and a coil compression spring is provided on the upper plate-shaped body. Fixed. Next, a polyester core-sheath structure nonwoven fabric having a thickness of 5 mm was attached to the upper surface of the upper plate, and a 10-fold expanded polyethylene sheet having a thickness of 2 mm was attached to the lower surface of the lower plate to produce a soundproof flooring. FIG. 6 is a side view of the soundproof flooring material, and FIG. 7 is a plan view of the soundproofing floor material.

A soundproof floor structure was manufactured in the same manner as in Example 2 using this soundproof floor material. In addition, the layout of the soundproof floor material,
5 at equal intervals in the longitudinal direction in the center of the ALC in the width direction
I provided one. The ratio of the installation area of the bottom plate to the floor plate was 5 × 0.3 × 0.5 / 0.6 × 8 = 0.42.

Example 4 A soundproof flooring material shown in FIGS. 8 and 9 was manufactured. The lower plate-shaped body was a 12 mm thick × 300 mm × 300 mm plywood, and the upper plate-shaped body was a 12 mm thick × 250 mm × 250 mm plywood. Next, as the viscoelastic body shown in Formulation Example 1 of Table 2, a 5 mm thick × 35 mm × 35 mm prism and a 10 mm thick × 40 mm × 40 mm prism were prepared. As the impact force alleviation plate, spring steel with a thickness of 1 mm × 250 mm × 250 mm is prepared, and 10 mm thickness × 4 is provided on the impact force alleviation plate.
Four 0 mm × 40 mm prisms were attached around the position of 75 mm from both sides as the center and bonded to the upper plate-shaped body. After that, 5 mm thick × 35 mm × 35 mm prisms were adhered to the four corners and the center under the impact force relaxation plate in five places, and the lower plate-like body was adhered to manufacture a soundproof flooring. FIG. 8 is a side view of this soundproof flooring, and FIG. 9 is a plan view. In the soundproof flooring material of this example, the upper shock absorbing material is provided at the center position between the lower shock absorbing materials.

On this soundproofing floor 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, placed in the direction perpendicular to the lower particle board on the upper side, and fixed with wooden screws toward the upper plate, and soundproof floor The structure was manufactured. In this soundproof floor structure, the soundproof floor material is of a type in which the left and right ALCs are fixed around the joint between the ALCs, and the ratio of the lower plate-shaped body per ALC is 7
It was x0.3x0.3 / 0.6x1.8 = 0.58.

Example 5 A soundproof floor material shown in FIGS. 10 and 11 was produced. The lower plate-shaped body is a 4.5 mm thick × 100 mm × 150 mm iron plate,
Screw holes were provided at the four corners of this iron plate, and the short side was bent upward at a right angle to 10 mm, and then, in the center, an 80 mmφ20 mm thick shock absorber made of the viscoelastic body of the compounding recipe example 3 shown in Table 4 was used. Individually glued and 9mm thick x 100m on it
A soundproof floor material was manufactured by adhering m × 100 mm plywood. FIG. 10 is a side view of the soundproof flooring material viewed from the long side direction of the lower plate-shaped body, and FIG. 11 is a plan view.

[0096]

[Table 4]

A plurality of ALCs are used as floorboards by using this soundproofing floor material.
Using (100 mm thickness x 600 mm width x 1800 mm length), a DAC with a length of 90 mm to connect between ALCs
The screws fixed the ALC in the lower plate.
At this time, the bent portion of the lower plate member of the panel was made orthogonal to the seam between the ALCs. 600 m in ALC width direction
One AL with m pitch and 300 mm pitch in the length direction
11 pieces were provided per C0.6 × 1.8 m ² . On top of this,
Similar to Example 4, 12 mm thick x 900 mm x 1800
Two mm particle boards were provided so that the lower particle board was orthogonal to the ALC, the upper particle board was orthogonal to the lower particle board, and they were fixed with wooden screws to manufacture a soundproof floor structure. The ratio of the lower plate to the floor plate 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. On the lower plate-shaped body, the viscoelastic body of the compounding formulation example 4 shown in Table 5 was used, in which the lower plate-shaped body was a plywood (12 mm thick x 350 mm x 350 mm), and the inside was a cavity of 50 mm square, 20 mm thick and 30 mm square inside. 9 pieces were attached with CR adhesive. Then plywood (12m
(thickness x 300 mm x 300 mm) as the upper plate, and C
A sound-insulating flooring material was manufactured by bonding the viscoelastic body with an R adhesive and further laminating a non-woven fabric on the upper surface. FIG. 12 is a side view of this soundproof flooring, and FIG. 13 is a plan view.

[0099]

[Table 5]

A plurality of ALCs (100 mm thickness x 600 mm width x 1800 m) as a floor board are provided by using this soundproofing floor material as a core / core.
Adjacent ALC with 600 mm pitch in the width direction of (m length)
The space is fixed with DAC screws, 4 pieces at 450 mm pitch in the length direction, fixed with DAC screws, 450 m in the center of ALC.
Three pieces were fixed at m pitch. Seven ALC sheets were used. The ratio of the bottom plate to the floorboard is 7 x 0.35 x
0.35 / 0.6 × 1.8 = 0.79m was ² / m ^2. 12mm thickness x 900mm width x 1 on this soundproof flooring
A particle board having a length of 800 mm was provided in a direction orthogonal to the ALC, and the particle board having a thickness of 12 mm was provided on the particle board in a direction orthogonal 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-shaped body is an iron plate 4.5 mm thick × 150 mm × 100 mm,
The tubular viscoelastic body of Formulation Example 4 shown in Table 5 (outer diameter 80 m
m, inner diameter 50 mm, height 20 mm) was used as a shock absorber. For this shock absorbing material, a pipe having an inner diameter of 2 mm was used in the center to communicate the cavity with the outside. This viscoelastic body was bonded to the lower plate-shaped body with cyanoacrylate, and the upper plate-shaped body was used as a plywood having a thickness of 9 mm × 100 mm × 100 mm and bonded with cyanoacrylate to produce a soundproof flooring material.

This soundproofing floor material is ALC with a floor board ALC of 100 mm thickness x 600 mm width x 1800 mm length and core / core.
300mm in the width direction centering on the adjacent joints of
Five pieces were provided at a pitch of 300 mm in the length direction.
10 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 orthogonal to the ALC, and another particle board of the same size is provided in the direction orthogonal to the particle board, and fixed with wooden screws from above to manufacture a soundproof floor structure. did.

Example 8 A soundproof floor material shown in FIGS. 16 and 17 was manufactured. The lower plate-shaped body is plywood with a thickness of 12 mm x 330 mm width x 330 mm, and the bottom side is 80 mm square, the top side is 50 mm square, and the top side is 26 mm.
The viscoelastic body of formulation formulation 1 shown in Table 2 having a square shape and a trapezoidal shape with a height of 26 mm is provided at the four corners of this lower plate-like body, and the bottom side is 80 mm square, the top side is 57 mm square, and the height is 20.
A viscoelastic body of the same formulation recipe 1 having the same mm was provided. Next, 9
A 300-mm-square plywood plate having a thickness of 300 mm was used as an upper plate-like body, and the upper plate-like body was adhered to the viscoelastic bodies at the four corners, and a 6 mm-thick 300 mm-square nonwoven fabric was laid on the upper surface of the upper plate-like body. Nine holes of 30 mmφ were opened in this nonwoven fabric, and 20 mmφ of viscoelasticity was attached to the holes. On the lower surface of the lower plate-shaped body, a foamed polyethylene having a thickness of 2 mm was stuck on the entire surface to manufacture a soundproof flooring material.

This soundproofing flooring material was used in the same manner as in Example 6 so that the floor board ALC was 100 mm thick × 600 mm wide × 1800 mm long, and the core / core was centered on the adjacent joints of the ALC, and the pitch was 600 mm in the width direction of the ALC. , 4 along the length
It was fixed with a DAC screw at a pitch of 50 mm. A soundproof floor material was also fixed to the center of the four soundproof floor materials. ALC1
7 per sheet (7 × 0.33 × 0.33 / 0.6 × 1.
The ground contact area was 8 = 0.71 m ² / m ² . On this soundproof floor material, particle board 12mm thick x 900m
Two m-width × 1800-mm length sheets were installed in a direction orthogonal to the ALC in the orthogonal direction and further on the particle board below in the orthogonal direction, and fixed with wooden screws to manufacture a soundproof floor structure.

Example 9 A soundproof flooring material as shown in FIGS. 18 and 19 was manufactured. The lower plate-shaped body is a 12 mm-thick 300 mm square plywood, the coil compression spring 20 mm height is provided at the center of the side and the plate, and the upper plate-shaped body with the four corners cut is a 12 mm-thick 300-square plywood. Then, a compression spring was fixed to the plywood with a V-shaped nail. A soundproof flooring was manufactured by applying two pieces of coil tension springs to the center of the sides of the upper and lower plywoods and setting two pairs of coil tension springs to the rings at both ends of the coil tension springs by fixing the wood screws.

The soundproof flooring material was fixed to the floor plate ALC with DAC screws on the lower plate-like body using the notches at the four corners of the upper plate-like body. For fixing, centering on the joint between ALCs, core / core, 600 mm in width direction, 3 mm in length direction.
It was set to 00 mm, and five ALC sheets were provided. The ground contact area ratio of the floor plate to the lower plate is 5 × 0.3 × 0.3 / 0.6 ×
It was 1.8 = 0.42m 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 fixed with wooden screws to manufacture a soundproof floor structure.

COMPARATIVE EXAMPLE 1 On the floor board ALC was placed, 12
mm × 900mm × 1800mm particle board 2
Prepare a sheet, set the lower particle board in the direction perpendicular to the longitudinal direction of the ALC, and ground the upper particle board in the direction further perpendicular to the ground. Then, put the 90 mm long DAC from the top of the two discarded particle boards to the ALC floor board. The floor structure was manufactured by fixing with screws.

Test Method The viscoelastic body and the soundproof floor material used for these soundproof floor structures, and the soundproof floor structure and floor structure were tested as follows.

1. Soundproof floor structure and maximum instantaneous displacement of floor structure Non-contact type laser displacement measuring instrument [made by KEYENCE CO., LTD.] Is used to irradiate a flashing laser beam every 0.5 ms in the vicinity of the bang machine, and the time / displacement relationship is shown. The value when the maximum displacement was continuously measured every 1 ms was taken as the maximum instantaneous displacement amount. The results of Examples 1 to 9 and Comparative Example 1 are shown in Tables 6 to 10.

2. About the example of using a viscoelastic body as a restorative shock absorber for the viscoelastic body, the same composition and the same molding conditions as the viscoelastic body, and an outer diameter of 50 mm
Three cylinders with a diameter of 30 mm and a height of 30 were prepared and
According to the compression test method of IS-K-6301, the specimen was compressed by 25%, immediately unloaded, and the height (h ¹ ) restored after 1 minute was measured, and the restoration rate after 1 minute was measured as follows. Calculated by the formula, the average of three specimens is shown in Table 6. Restoration rate after 1 minute (%) = height restored after 1 minute / original height before compression × 100 Next, the height restored after 10 minutes (h ¹⁰ ) was measured, and 1 minute of the previous formula was calculated. After 10 minutes, it was calculated by a rewritten formula, and the averages of three test pieces are shown in Tables 6 to 10.

3. Heavy floor impact sound On the second floor of a steel-framed detached house, rubber cushioning material 5mm thick x 50mm wide, ALC floorboard (100mm thick x 600mm wide x 180
The floor structure of each Example and Comparative Example was constructed on the floor of a 6-tatami room on which 0 mm length) was placed, and the heavy floor impact sound was measured in the room directly below according to JIS-A-1418. Table 6 to Table 1
It was shown at 0.

The floor / ceiling space is 24K1 over the entire ceiling.
00mm thick glass wool is installed and the ceiling is an independent ceiling.
Under the condition that the gypsum board 12.5mm thickness was installed without any gap,
All tests were conducted.

[0113]

[Table 6]

[0114]

[Table 7]

[0115]

[Table 8]

[0116]

[Table 9]

[0117]

[Table 10]

The test results of the examples and comparative examples will be described below. In Example 1, an iron plate having a high rigidity was used as the lower plate-like member, and it was firmly fixed to the ALC floor plate, which is the floor plate, with DAC screws, and four viscoelastic shock absorbers per one soundproof floor member were used. This is an example in which the side plate-shaped body is used as a plywood, and 0.25 m ² is provided per 1 m ² of the floor plate under the plate-shaped waste material. The maximum instantaneous displacement at this time is 6 mm,
It satisfies mm or less, and the walking feeling is good. Moreover, the restoration rate of the impact absorbing material was 85% after 1 minute and 100% after 10 minutes, and there was some restoration in a short period of time, and after 10 minutes, the restoration rate was 95% or more. The weight impact sound at this time is L _H −
It is 57, which satisfies the L _H -55 grade. Further, it is improved by 2 ranks as compared with L _H -64 (L _H -65 grade) of Comparative Example 1. Especially, 63H which is difficult to improve due to heavy floor impact sound
Improvements of 7 dB and 8 dB are observed at z and 125 Hz, respectively. This shows that absorption and relaxation of impact force is effective.

The second embodiment is an example in which the lower plate-shaped member is a 12 mm plywood and is firmly fixed to the ALC floor plate with a DAC screw. This is an example in which five viscoelastic bodies are provided on the lower plate-like body, and fibrous materials are provided on the viscoelastic body as an impact force relaxation auxiliary material, and the upper plate-like body 12 mm plywood is used as a soundproof flooring material. The flooring is provided floor area 1 m ² per 0.25 m ^2. At this time, the maximum instantaneous displacement amount is 7 mm, and the walking feeling is good. The viscoelastic body at this time has a recovery rate of 83% after 1 minute,
It is 97% after 10 and the impact absorption relaxation effect is also good. The heavy floor impact sound is L _H -55 (L _H -55 grade), which is improved by 2 ranks as compared with Comparative Example 1, and 63 Hz and 125 Hz, which are particularly difficult to improve with heavy floor impact sound, can be improved by 9 dB respectively, and the impact absorption mitigation effect is good. I know there is.

In Example 3, the lower plate-shaped body was a 12 mm plywood board, a cushioning material was provided on the lower surface of the plywood board, and it was fixed to the ALC floor board with DAC screws, and five viscoelastic bodies and four compression springs were provided on it. This is an example of a soundproof floor material in which a 12 mm plywood is provided thereon, and an impact force relaxation auxiliary material is further provided on the upper plate-shaped body. The flooring is provided floorboard 1 m ² per 0.42 m ^2. At this time, the maximum instantaneous displacement amount is 7 mm, and the walking feeling is good. The restoration rate is 85% after 1 minute and 1 after 10 minutes.
It is 00%, and the impact absorption relaxation is good. At this time, the heavy floor impact sound was L _H -56 (L _H -55 grade), which was improved by 2 ranks from Comparative Example 1, and 63 Hz and 125 Hz, which are difficult to improve with the heavy floor impact sound, could be improved by 10 dB and 8 dB, respectively. It can be seen that the impact absorption relaxation effect is good.

In Example 4, a lower plate 12 mm plywood is fixed to an ALC floor plate with DAC screws, and viscoelastic bodies are not vertically stacked on the upper and lower sides of an impact absorbing plate as a shock absorbing material. It is an example of a soundproofing floor material in which a 12 mm plywood is provided as the upper plate-like member on the above. 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 is also good, which is 85% after 1 minute and 100% after 10 minutes. The heavy floor impact sound at this time is L _H -54.
(L _H -55 grade) improved by 2 ranks from Comparative Example 1,
63 Hz and 125 Hz, which are difficult to improve, are 11 dB and 1 respectively.
It can be seen that the impact absorption relaxation effect is good at 0 db.

In Example 5, an iron plate having a high rigidity was used as the lower plate-like member, and iron plates having both ends bent to further increase the rigidity were fixed to the ALC floor plate with DAC screws, and a viscoelastic body was provided as a shock absorber. This is an example of using a soundproof floor material in which the side plate-like body is a 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. The restoration rate is also 74 minutes after 1 minute.
%, 96% after 10 minutes, and the impact absorption relaxation effect is high. The heavy floor impact sound at this time is L _H -57 (L _H
-55 grade), which is improved by 2 ranks from Comparative Example 1. Also, 63 Hz, which is difficult to improve due to heavy floor impact noise,
The improvement amount at 25 Hz is 7 dB for each, and it can be seen that the impact absorption relaxation effect is good.

In Example 6, the lower plate-like body was made of 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. At this time, the recovery rate of the viscoelastic body was as good as 78% after 1 minute and 97% after 10 minutes. The heavy floor impact sound at this time is L
_{With H-} 53 (L _H -55 grade), it is improved close to L _H -50 grade. Improved by 2 ranks as compared with Comparative Example 1 and difficult to improve heavy floor impact sound 63 Hz, 125 Hz
Also improved by 12 dB and 11 dB respectively, showing a very good impact absorption relaxation effect.

In Example 7, the lower plate was an iron plate and AL
It is fixed to the C floor plate with a DAC screw, and a viscoelastic body in the form of a hollow round pipe having a communication hole is provided on the C floor plate.
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. Maximum instantaneous displacement at this time is 7 m
m, and the restoration rate is 78% after 1 minute and 97% after 10 minutes.
And is good. The heavy floor impact sound at this time is L _H
It is -56 (L _H -55 grade), which is improved by 2 ranks from Comparative Example 1. It is difficult to improve at this time 63Hz, 1
25 Hz is improved by 10 dB and 8 dB, respectively, and it can be seen that the impact absorption relaxation effect is large.

In the eighth embodiment, the lower plate-shaped body is made of 12 mm plywood.
Then, place an impact material underneath it, and use DAC screws on the ALC floorboard.
It is fixed and the trapezoidal viscoelastic body is placed on top of the four corners and at the center.
Are installed in different states, and 9mm plywood is on top of it.
It is provided as a shape body and as an impact force relaxation auxiliary material on it
Holes are provided in some places, and viscoelastic bodies are provided in the holes.
1 m floor sound plate²0.71m per²In the example provided
It The maximum instantaneous displacement at this time is 4 mm, and the walking feeling is good.
I like it. The restoration rate of the viscoelastic body at this time is 85 after 1 minute.
%, 100% after 10 minutes, which is good. At this time
Heavy floor impact sound is L _H-54 (L_H-55 grade)
2 ranks higher than in Comparative Example 1. Also, the weight
63Hz and 125Hz, which are difficult to improve floor impact noise, are 1 each
1dB, 10db can be improved and good impact absorption relaxation effect
It is shown.

In Example 9, the lower plate-shaped body was a 12 mm plywood, which was fixed to the ALC floor plate with DAC screws, on which 5 compression springs and 4 tension springs were provided as shock absorbers, and the upper plate-shaped body was used. Soundproof flooring with 12mm plywood 1m floorboard
^In this example, 0.42 m ^{2 is} provided for every 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)
Thus, it is improved by 2 ranks as compared with Comparative Example 1. Further, it can be seen that it is possible to improve 63 Hz and 125 Hz, which are difficult to improve, by 8 dB and 7 dB, respectively, and the impact absorbing and mitigating effect is high.

[0127]

EFFECTS OF THE INVENTION The soundproof floor structure of the present invention is provided with a plurality of soundproof floor materials separated from each other between a floorboard and a floor board as a floor surface forming base, and the soundproof floor material and a space between them are provided. By absorbing and relaxing the impact force of the floor, low-frequency noise generated from the floor board can be significantly reduced.

As described above, according to the present invention, since it is not necessary to increase the rigidity of the structure of the building itself or increase the floor rigidity and the floor weight, a general detached house such as a wooden structure, two-by-four structure or a steel frame structure or a low-rise building can be used. Especially suitable for apartment buildings.

[Brief description of drawings]

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

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

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

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

5 is a plan view of the soundproof flooring material of FIG. 4. FIG.

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

FIG. 7 is a plan view of the soundproof flooring of FIG.

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

9 is a plan view of the soundproof flooring of FIG. 8. FIG.

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

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

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

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

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

FIG. 15 is a plan view of the soundproof flooring shown in FIG.

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

FIG. 17 is a plan view of the soundproof flooring shown in FIG.

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

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

[Explanation of symbols]

1 Soundproof floor structure 2 Plate-shaped waste material 3 Floorboards 4, 14, 23, 29, 35, 39, 45, 52 Soundproof floor materials 5, 12 Spaces 6, 30, 40, 53 Lower plate-shaped bodies 7a, 7b Shock absorber 8, 34, 55 Upper plate-shaped 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 relaxation plate 27 Upper surface space 28 Lower surface space 31 Protrusion 32,41 Screw hole 36,44 Cavity 43 Pipe 46 Buffer material 49 Impact force relaxation Auxiliary material 50 Hole 54 Compression spring 56 Wooden screw 57 Tension spring

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-183805 (JP, A) JP-A-2-54058 (JP, A) JP-A-62-136958 (JP, A) Actual development Sho-62- 38353 (JP, U) Actual development Flat 4-120811 (JP, U) Actual development Sho 47-27215 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04B 5/43 E04F 15 / 18

Claims (9)

(57) [Claims] 1. A plate-shaped waste material as a floor forming base and a floor board of a flexible structure that supports the plate-shaped waste material ,
A plurality of floor panels in which the floor board is a floor slab or a wooden floor panel.
A sound-proof floor structure in which floor impact sound is reduced, and a plurality of sound-proof floor materials are arranged between the plate-shaped waste material and the floor board, and the sound-proof floor structure is shown in a longitudinal section. When viewed, the soundproof floor materials are separated from each other, and a space is provided between the soundproof floor materials, and the soundproof floor materials include a lower plate-shaped body, an impact absorbing material, and an upper plate-shaped body. And the impact
An absorber is arranged between the lower plate and the upper plate.
And the lower plate-shaped body is a 1 m ² surface of the floor plate.
Per area, the table of 0.05m ² ~0.8m ² of the floor plate
Is fixed on the area, and the lower plate-shaped body is at least
The two floor panels are connected and integrated, and the upper plate-shaped body is provided below the plate-shaped waste material.
A soundproof floor structure characterized in that the maximum instantaneous displacement in the vertical direction of the plate-shaped waste material due to the impact of a bang machine defined in A-1418 is within 10 mm. 2. A plate-shaped waste material for forming a floor surface and the plate.
It has a floor board that supports the waste material and reduces floor impact noise.
A soundproof floor structure, in which a plurality of soundproof floor materials are arranged between the plate-like waste material and the floor board.
The soundproof floor structure is placed in front of
Note that each soundproof floor material is separated from each other,
There is a space between them, and each of the soundproof floor materials is a lower plate
A lower body, a shock absorber and an upper plate-shaped body,
A plate-like body is provided on the floor plate,
The body is installed under the plate-shaped waste material, and
A collecting material is placed between the lower plate and the upper plate.
The bang machine specified in JIS-A-1418
Maximum vertical displacement of the above-mentioned scrap material due to the impact of
The amount is within 10 mm, and whether the shock absorber is a viscoelastic body.
The upper plate-like body, the viscoelastic body, and the lower plate-like body.
A hollow part surrounded by the body is formed,
The body has a through hole, the through hole and the hollow portion
It is characterized in that it communicates with the outside of the hollow portion.
Soundproof floor structure. 3. The soundproof floor material comprises a plurality of shock absorbers.
When the soundproof floor structure is viewed in a vertical section,
The shock absorbers are separated from each other , and between the shock absorbers
The space according to claim 1, characterized in that
Is a soundproof floor structure described in 2. 4. The compression spring is composed of a compression spring made of at least one material selected from the group consisting of metals and plastics and a viscoelastic body, and an impact is applied to the plate-shaped waste material, whereby the compression spring The soundproof floor structure according to claim 1 or 3, wherein a compression deformation position of the compression spring is kept higher than a compression limit position of the compression spring when the viscoelastic body is deformed. 5. The soundproof flooring material is composed of at least two types of soundproofing flooring materials, and the two types of soundproofing flooring materials each include a lower plate-shaped body, a shock absorbing material, and an upper plate-shaped body. The impact absorbing material of the soundproof flooring material is in contact with the upper plate-shaped body,
A gap is provided between the shock absorbing material of the other soundproof flooring and the upper plate-shaped body, and when a shock is applied to the plate-shaped waste material, the shock absorbing of the other soundproofing flooring is performed. The soundproof floor structure according to any one of claims 1 , 3 and 4, wherein a material and the upper plate-like body are in contact with each other. 6. The soundproof floor material is at least two types of impact absorbing materials.
A shock absorber, and one of the shock absorbers is the upper plate.
The impact absorbing material on the other side is in contact with the upper body.
There is a gap between the sheet and the impact on the plate-shaped waste material.
Is applied, the other shock absorber and the upper plate
5. Contact with the body, claim 1, 3 and 4 characterized in that
The soundproof floor structure according to any one of 1. 7. The soundproof flooring is provided with an impact force alleviation plate.
The impact force mitigating plate includes the upper plate-like body and the lower plate-like body.
It is provided between the body and the upper surface of the impact force relaxation plate.
And the shock absorbing material is arranged on the lower surface.
7. Any one of claims 1, 3, 4, 5 and 6
Soundproof floor structure. 8. The shock absorber comprises a plurality of shock absorbers.
When the soundproof floor structure is viewed in a vertical section,
The absorbers are separated from each other, and between the shock absorbers
The upper surface space and the lower surface space are formed, and the plate-shaped waste is pasted.
When the material receives a shock, the bending stress of each shock absorbing material
Therefore, the impact force alleviation plate is provided on the lower surface space and the upper surface.
It bends toward the space and is restored by the restoring force of the impact force relaxation plate.
Therefore, the bending of the impact force relaxation plate is restored.
The soundproof floor structure according to claim 7. 9. An upper surface and a lower surface of the upper plate-shaped body are reduced.
On the other hand, a group consisting of fibrous material, foam and porous material
Provided with at least one kind of impact force relaxation auxiliary material selected from
Claims 1, 3, 4, 5,
The soundproof floor structure according to any one of 6, 7, and 8.