JP2000110340A - Floor sound-insulating sheet floor structure and floor execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor sound-insulating sheet having constitution, in which the sheet can be interposed between a floor finishing material and a floor supporting structure comparatively simply, plastic deformation and a pressing phenomenon are not generated due to the working of compressive stress for a prolonged term and the deterioration with time of a raw material, effective sound-insulating performance and vibration-damping performance can be displayed continuously for the prolonged term and cost is reduced and which is simplified. SOLUTION: The floor sound-insulating sheet 10 is interposed among floor supporting structures 1, 2 and a floor finishing material 3 for preventing the transmission of noises between an upper floor and a lower floor. The floor sound-insulating sheet 10 has a sheet- shaped substrate 11 extended on the upper sides of the floor supporting structures 1, 2 and a large number of fluid sealing sections 12 integrally disposed on the substrate at regular intervals. The fluid sealing sections 12 support the floor finishing material 3, and transmit the load of the upper floor to the floor supporting structures 1, 2 while inhibiting the transmission of noises between the upper floor and the lower floor. In the execution of works the sound-insulating sheet 10 is laid on the top faces of the supporting structures 1, 2, the fluid sealing sections 12 are compressed by the floor finishing material 3, and the floor finishing material 3 is supported onto the floor supporting structures 1, 2 through a fluid 18 sealed into the sealing section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor acoustic insulation sheet, a floor structure, and a floor construction method.
The present invention relates to a floor sound insulation sheet, a floor structure, and a floor construction method capable of improving the sound insulation performance and vibration insulation performance of a floor structure of a building.

[0002]

2. Description of the Related Art A floor structure of a building generally includes a horizontal structural member such as a beam, a floor slab or a horizontal member for transmitting a floor load to a vertical structural member such as a column or a load-bearing wall, and a joist and a floor base material. It comprises a floor support structure and a floor finishing material laid on the upper surface of the floor support structure. For example, the floor of the second floor or the top floor of a wooden building is laid on a beam or horizontal member of a wooden structural frame, a joist and a floor substrate for transmitting floor load to the frame, and a construction surface of the floor substrate. It is generally composed of floor finishing materials. Generally, a beam is horizontally arranged at a predetermined position in a building, and both ends of the beam are fixed to a vertical member such as a pillar. The joists are arranged in parallel on the beam at predetermined intervals, and are fixed to the upper surface of the beam in a direction perpendicular to the beam. Generally, a floor baseboard made of a wood-based plywood is fixed on a joist and forms a construction surface of a flat floor finishing material extending throughout the room. The floor finishing material is laid on a floor base plate, and the upper surface of the floor finishing material constitutes the interior finishing surface of the room. As this kind of floor finishing material, wood flooring material such as natural wood or veneer plywood, resin sheet material such as long PVC sheet or cushion floor, or fiber finish such as tatami, carpet, tile carpet or needle punch Floor finish materials such as materials are commonly employed.

In recent years, the influence of a change in climate or the external environment such as external noise on the indoor environment of a detached house or an apartment house has been particularly improved in recent years as the airtightness and heat insulation of a building have been improved. As a result, countermeasures against noise or vibration inside buildings, which have been relatively neglected in the past, are being emphasized as factors for further improving the livability and comfort of houses and the like. For example, the noise of the upper floor of a wooden house penetrates through the floor structure and is easily transmitted to the lower floor living room.
There is a possibility that the comfort or comfort of the lower floor may be impaired, and therefore, various measures for improving the floor structure that can effectively prevent noise or vibration transmission on the upper and lower floors have been studied.

As a floor construction method for preventing noise transmission from an upper floor to a lower floor, a sound insulation sheet made of a special material or
A floor construction method in which a relatively soft sheet material having elasticity is interposed between a floor support structure and a floor finishing material has been proposed in wooden house buildings and the like. As a sound insulating sheet made of a special material, a resin sound insulating sheet containing calcium carbonate, or Japanese Patent Application Laid-Open No. 9-123326 or
A sound insulating material and the like disclosed in, for example, JP-A-121596 are known. The sound insulating material disclosed in this publication is generally composed of a sheet-like base material containing a filler and asphalt as main components, and a resin foam sheet adhered on the base material. The resin foam sheet absorbs airborne sound and effectively regulates solid-borne sound in a specific frequency band, while the base layer generally regulates fixed-borne sound in a wide frequency range.

As another type of floor construction method, a floor structure having a structure in which elastic columns are dispersedly arranged in a resin foam layer extending over the entire floor is disclosed in JP-A-6-33586 or JP-A-6-28037.
No. 8, etc. The impact sound attenuating floor disclosed in the publication includes a resin foam layer interposed between a floor finishing material and a floor support structure, and an elastic strut disposed at an opening of the foam layer, The elastic strut has a rigidity capable of supporting a floor load and has a vibration damping performance capable of damping floor vibration. It is considered that the vibration of the floor surface is attenuated by the vibration damping action of the foam layer and the elastic struts, and the noise of the upper floor is sound-insulated in the floor structure without propagating to the lower floor.

[0006]

However, a sound insulating sheet made of a special material developed for the purpose of sound insulating a floor contains a relatively large amount of a special polymer compound, metal or natural material, or has a special manufacturing method. In many cases, sound insulation sheets that are expensive due to such manufacturing reasons are difficult to adopt as inexpensive and general-purpose building materials for general wooden houses and the like. There is. Moreover, since the compressive stress due to the long-term floor load on the floor surface continuously acts on the sound insulation sheet or the soft sheet inserted between the floor finishing material and the floor support structure, the sheet material is
It is plastically deformed due to long-term compression deformation and aging of the material, and is squeezed. Thus, the sheet material permanently interposed in the floor structure loses its initial vibration damping performance with aging, so that the floor structure can no longer effectively exhibit the desired sound insulation performance. .

On the other hand, a floor structure having the above-mentioned elastic strut is proposed to prevent the plastic deformation or sinking phenomenon of the sheet material by the strength and compressive strength of the elastic strut. However, such a floor construction method not only complicates the construction process of the building interior construction work, but also increases the construction cost, and furthermore, the conditions of use of the elastic struts are individually different in various kinds of buildings. Properly arranging the elastic strut on the floor structure requires a structural design of the elastic strut which is extremely difficult in practice. Thus, a composite sound insulation or vibration damping structure with special columns and resin foam layer,
Since it is economically and technically difficult to apply it as a floor structure of various buildings, at present, it is difficult to easily adopt it in general architectural design.

The present invention has been made in view of such circumstances, and an object of the present invention is to relatively easily interpose between a floor finishing material and a floor support structure. An inexpensive and simple floor sound insulation sheet capable of continuously exhibiting effective sound insulation performance and vibration damping performance over a long period of time without causing plastic deformation and squeezing phenomena due to the action of long-term compressive stress and aging of the material. To provide.

Another object of the present invention is to provide a floor sound insulating sheet which can relatively easily adjust the sound insulating performance and vibration damping performance of the floor. The present invention can further interpose the floor sound insulation sheet between the floor finishing material and the floor support structure without complicating the floor construction process, and improve the sound insulation performance and vibration damping performance of the floor as desired. An object of the present invention is to provide a floor structure and a floor construction method that can be performed.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method for preventing noise transmission between an upper floor and a lower floor, between a floor supporting structure and a floor finishing material. The interposed sound insulation sheet has a sheet-like substrate extending above the floor support structure, and a plurality of fluid sealing portions swelling from the substrate and distributed on the substrate surface at a predetermined interval from each other. The fluid sealed in the enclosure supports the floor finishing material, transmits the load of the upper floor to the floor support structure, and suppresses noise transmission between the upper floor and the lower floor. Floor sound insulation sheet. According to the above configuration of the present invention, the sound insulating layer on which the floor finishing material can be laminated is formed on the floor structure by the floor sound insulating sheet having a configuration in which the plurality of fluid-filled portions are integrally supported on the sheet-like substrate. The upper floor load acting on the floor covering acts on the fluid in the fluid enclosure and compresses the fluid, which transmits the compressive stress of the floor load to the floor support structure. The sound insulation sheet of the present invention, formed as an integral sheet and using fluid as the main stress transmitting element, can be inserted relatively easily between the floor finish and the floor support structure, while providing the effect of long term compressive stress and Without causing plastic deformation and squeezing phenomenon due to aging of the material,
An intermediate sound insulation layer capable of continuously exhibiting effective sound insulation performance and vibration damping performance over a long period of time and suppressing noise transmission on the upper and lower floors is permanently formed on the floor structure.

Further, by laying the above-mentioned sound insulation sheet in a single layer or laminating a plurality of layers or multiple layers, the sound insulation characteristics and vibration damping performance of the floor sound insulation sheet can be changed relatively easily. Therefore, according to the above configuration of the present invention, the lamination mode of the floor sound insulation sheet is appropriately changed in accordance with the use of the building or the design conditions of the floor structure, and the sound insulation characteristics and vibration damping performance of the floor structure. Can be adjusted as desired.
Moreover, the floor sound insulating sheet has a configuration that can be continuously and integrally formed by a general resin molding apparatus, and this enables mass production of inexpensive floor sound insulating materials.

[0012] The present invention also provides a floor structure provided with the sound insulation sheet having the above-described structure, a floor support structure, and a floor finishing material.
The sound insulation sheet is interposed between a floor support structure and a floor finishing material so as to prevent noise transmission between an upper floor and a lower floor, and the fluid sealed in the fluid sealing portion is provided by the floor finishing. A floor structure which supports a material, transmits a load on an upper floor to a floor support structure, and suppresses noise transmission between an upper floor and a lower floor.

[0013] The present invention further provides a sound insulation sheet having the above-described structure,
In the method for constructing a floor structure including a floor support structure and a floor finishing material, the sound insulation sheet is laid on an upper surface of the floor support structure, a floor finish material is laid on the sound insulation sheet, and the fluid sealing portion is formed. Through a fluid that is compressed and sealed within the enclosure,
A floor construction method comprising supporting a floor finishing material on a floor support structure, transmitting a load of an upper floor to the floor support structure, and suppressing noise transmission between the upper floor and the lower floor. I do.

According to the above construction of the present invention, the floor finishing material is laminated on the floor support structure via the sound insulating sheet, whereby the floor structure having the intermediate sound insulating layer can be constructed quickly and easily. The sound insulation performance and vibration damping performance of the floor can be improved as desired.

[0015]

According to a preferred embodiment of the present invention, the fluid comprises air filled in a fluid filling portion at a predetermined filling rate, and the air in the filling portion is caused by a floor load on an upper floor. Compressed. Preferably, the sound insulation sheet has a laminated structure of upper and lower resin sheets, and the respective resin sheets are mutually bonded or welded in a region between the fluid sealing portions, and are separated from each other in a region of the fluid sealing portion. And a fluid storage chamber capable of enclosing air. Preferably, the sound insulation sheet is continuously manufactured by a suitable resin molding apparatus provided with a resin sheet supply unit, a resin welding unit, and a fluid sealing unit.

According to another embodiment of the present invention, an inert gas, a liquid, a gel-like substance, or the like is used as the fluid, and the sound insulating sheet exhibits sound insulating properties and vibration damping properties according to the physical properties of the fluid. I do.

According to a further preferred embodiment of the present invention, the fluid sealing portion is formed by a bulging portion of a sheet-like substrate having a predetermined planar shape. The swelling portion is dispersed on the sound insulating sheet at a predetermined plane distribution density, and the swelling portion has a plane distribution density set to less than 50%. Preferably, a sound insulation sheet having a bulging portion facing upward and a sound insulation sheet having a bulging portion facing downward are alternately and vertically stacked, and the fluid sealing portion of the upper sound insulation sheet is formed of a fluid of the lower sound insulation sheet. Inserted into the area of the flat lower sheet-like substrate located between the encapsulations,
The fluid-filled portion of the lower sound-insulating sheet is inserted into the area of the flat upper sheet-like substrate located between the fluid-filled portions of the upper sound-insulating sheet. For example, the sound insulation sheet laminated in such a form in a two-layer structure increases the planar distribution density of the fluid filled portion without substantially increasing the space between the floor foundation structure and the floor covering material. . By laminating the sound insulating sheets, the sound insulating performance and the vibration damping performance of the floor structure are appropriately adjusted.

According to a preferred embodiment of the present invention, the material of the sheet-like base material, the kind and physical properties of the fluid, the form and the planar distribution density of the fluid sealing portion, and the lamination mode of the sound insulation sheet are used for building purposes. The design is changed as appropriate according to the design conditions and the like, and the floor structure exhibits optimal sound insulation characteristics and vibration damping characteristics adapted to the purpose of use.

In a preferred embodiment of the present invention, the nature of the noise source or vibration source on the upper floor is analyzed, and the floor structure should be sound-insulated or damped based on the noise or vibration characteristics of the upper floor. The specific frequency band is determined, and the configuration of the floor structure that can effectively prevent the resonance effect (coincidence effect) is determined. The material, dimensions, physical properties and structural details of each component of the sound insulating sheet are appropriately set and changed to exhibit appropriate sound insulating properties and vibration damping properties corresponding to the sound insulating target or the vibration damping target of the floor structure. You.

According to a preferred embodiment of the present invention, the sound insulating sheet is interposed in a floor structure of an intermediate floor such as a detached house having a wooden structure or an apartment house having a reinforced concrete structure. The floor support structure includes a beam supported by a vertical column or a load-bearing wall, a joist and a floor slab, or a slab, a joist and a floor slab laid on a concrete floor slab, and the floor finishing material is a wooden flooring. It is made of a hard floor finishing material such as a material, or includes an interior material such as a carpet, and a hard interior base plywood constituting a lower ground of the interior material. The sound insulation sheet laid on the floor base plate is fixed on the floor base plate with an adhesive or a fastener, and the floor finish material or interior base plywood is laminated on the sound insulation sheet, and the sound insulation sheet with an appropriate adhesive. It is glued on top or fixed to the floorboard or joist by a suitable fastener.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a partial perspective view illustrating a floor structure of a wooden building provided with a floor sound insulation sheet according to an example, and FIG. 2 is a partial vertical cross-sectional view of the floor structure illustrated in FIG. 1.

The floor structure shown in FIG. 1 is composed of a plurality of joists 1 supported by a main structural part of a wooden building, a floor base plate 2 arranged on the joists 1, and a floor forming an indoor floor surface. And a finishing material 3. The joist 1 is made of, for example, a natural wooden timber that constitutes a floor set on the second floor of a wooden house, and has a relatively small rectangular cross-sectional shape having a width of about 30 to 50 mm and a height of about 60 to 100 mm. The floor substrate 2 is made of a so-called veneer or a wooden plywood, such as a control panel, which is generally used as a flooring on the second floor, and forms a floor material construction surface extending over the entire surface of the second floor. The floor finishing material 3 is made of hard woody flooring material such as natural wood or veneer plywood, and the upper surface of the floor finishing material 3 constitutes the indoor floor finishing surface of the second floor.

A floor sound insulating sheet 10 is interposed between the floor base plate 2 and the floor finishing material 3. The floor sound-insulating sheet 10 includes a sheet-like substrate 11 that is in close contact with the upper surface of the floor base plate 2 and a closed-cell enclosure 12 that is dispersed and arranged on the substrate 11 at a predetermined interval.
It is composed of As shown in FIG. 2, each enclosure 12
The floor load projecting upward from the substrate 11 and acting on the floor of the second floor acts on the enclosure 12 of the floor sound insulation sheet 10 via the floor finishing material 3. The enclosing body 12 is compressed by the floor load and flattened. As a result, a supporting force or a reaction force for maintaining the space between the floor base plate 2 and the floor finish material 3 at a predetermined size is generated, and the floor finish material 3 is moved to the floor base plate. 2 stably supported.

FIG. 3A is a partial plan view showing the details of the structure of the floor sound insulating sheet shown in FIG. 1, and FIG.
It is an expanded longitudinal section of a floor sound insulation sheet in the BB line of (A). FIG. 4 is a partial perspective view of the floor sound insulation sheet.

As shown in FIG. 3B, the floor sound insulating sheet 10
Is formed as a resin buffer sheet having an air-buried sheet structure or an air packing structure in which two resin sheets 15 and 16 are vertically stacked and partially filled with air. The lower sheet 15 has a flat lower surface that can be entirely adhered to the upper surface of the floor substrate 2, while the upper sheet 16 has a lower sheet 1
5 has a welded portion 13 integrally welded on the upper surface 5 and a bulging portion 17 protruding upward. The bulging portion 17 defines a fluid storage chamber capable of sealing the air layer 18, and the bulging portion 17 filled with air at a predetermined filling rate forms the closed-cell enclosure 12. The closed-cell enclosure 12 is shown in FIGS.
As shown in FIG. 2, the enclosures 12 in each row are arranged in parallel in a plurality of rows at predetermined intervals in the width direction, and the enclosing bodies 12 in each row extend in a strip shape in the longitudinal direction, and are divided into predetermined lengths by the sealing portions 14. Thus, a large number of closed-cell enclosures 12 in the form of a rectangular plane are arranged on the floor sound-insulating sheet 10.

It should be noted that the floor sound insulating sheet 10 having such a configuration is provided.
As a manufacturing method, a conventional method for manufacturing a bubble-containing sheet or air packing using a resin molding device (not shown) such as an air cushioning material manufacturing machine for packing can be applied. For example,
The floor sound insulation sheet 10 continuously supplies the upper and lower resin sheets 15 and 16 to the resin molding apparatus, and heat seals the welded portion 13 and the sealing portion 14 by the resin welding means of the resin molding apparatus. Can be manufactured by locally welding together and sealing the air in the bulging portion 17. A general-purpose resin such as a vinyl chloride resin or a high-density polyethylene resin can be generally used as a material of the resin sheets 15 and 16.

FIG. 5 is a partial longitudinal sectional view of the floor structure shown in FIG. Floor sound insulation sheet 10 laid on the floor substrate 2
Is adhered to the upper surface of the floor substrate 2 with an adhesive. The floor finishing material 3 laminated on the floor sound insulating sheet 10 presses the closed-cell enclosure 12 to compress and flatten the enclosure 12. The load on the second floor acts on the closed-cell enclosure 12 via the floor finishing material 2, and a large number of enclosures 12 on the floor sound-insulating sheet 10 are distributed on the floor base plate 2 at a uniform distribution density, The floor finishing material 3 is supported on the floor finishing material 2. The enclosure 12 is stable under the balanced condition of the compressive stress of the air layer 18, the resin stretching resistance of the bulging portion 17, and the floor load of the second floor, and the floor load, impact and vibration acting on the second floor are reduced. , Substantially inclusion body 1
The air is transmitted to the floor substrate 2 and the joist 1 via the air layer 18 of the second embodiment.

The noise, walking sound or vibration generated in the room on the second floor, and the sound of falling objects or impact sound generated on the floor surface of the floor finishing material 2, for example, daily life of tableware, furniture and fixtures, books, etc. A relatively high-frequency impact sound or the like generated when the article falls onto the floor finishing material 3 propagates to the closed-cell enclosure 12 via the floor finishing material 3. The enclosure 12 is made of the resin sheet 1
The sound insulation performance and vibration damping characteristics of the air layers 5 and 16 and the air space 1
Due to the vibration absorbing function and the vibration damping / buffering function of No. 8, noise or impact sound on the second floor is attenuated, and transmission of noise or vibration to the lower floor (first floor) is substantially blocked.

Further, since the air layer 18 sealed in the enclosure 12 exhibits extremely high heat conduction resistance, the floor sound insulating sheet 10 functions as a high-performance floor heat insulating material. The thermal efficiency of the device is greatly improved. Furthermore, since the floor sound insulation sheet 10 having the above structure functions as a waterproofing means and / or a moisture-proofing means for the floor structure, the water resistance performance of the floor structure is improved.

Thus, the floor sound insulating sheet 10 having the above-described structure is provided.
Can improve not only the sound insulation performance, vibration damping performance, and shock absorbing effect of the floor structure, but also the heat insulation performance and water resistance performance of the floor structure, and can be easily and inexpensively installed on the upper floor. Therefore, it is extremely advantageous practically.

FIG. 6 is a partial longitudinal sectional view of a floor structure showing a modification of the floor construction method using the floor sound insulating sheet 10. In the construction mode shown in FIG.
Are stacked in two upper and lower layers. Lower layer sound insulation sheet 10A
Is laid on the floor base plate 2 with the closed cell enclosure 12A facing upward, and the sheet substrate 11B of the upper floor sound insulation sheet 10B has the closed cell enclosure 12B facing downward. It is laminated on the floor sound insulation sheet 10A in this state. The enclosure 12B of the floor sound insulation sheet 10B is inserted into a region between the enclosures 12A of the floor sound insulation sheet 10A,
The upper and lower floor sound insulation sheets 10A: 10B are laminated in a two-layer structure without substantially increasing the space between the floor base plate 2 and the floor finishing material 3. The lamination of the floor sound insulation sheets 10 doubles the planar distribution density of the enclosing body 12, and supports the floor load supporting force, durability, rigidity, sound insulation characteristics, vibration damping characteristics, and sound insulation layers formed by the floor sound insulation sheets 10. Various properties such as heat conduction resistance are further improved, and the resonance effect (coincidence effect) of the floor structure is appropriately adjusted. Thus, according to the floor sound insulating sheet 10 having the above configuration, the floor sound insulating sheet 10 is laminated in a two-layer or multi-layer structure, thereby improving the sound insulating effect of the floor structure and meeting the use and design conditions of the building. The floor structure having various physical properties and various performances can be designed and constructed relatively easily.

FIG. 7 is a partial perspective view showing a floor structure of a wooden building provided with a floor sound insulation sheet according to a second embodiment of the present invention. In this embodiment, the floor sound insulating sheet 10 inserted between the floor base plate 2 and the floor finishing material 3 is a sheet-like substrate 1.
1 have a number of closed-cell enclosures 12 in the form of circular planes that are evenly distributed. The enclosures 12 are regularly distributed on the sheet 10 at predetermined intervals. The floor loading load acting on the floor finishing material 3 is the floor finishing material 3, the closed-cell enclosure 12
In addition, stress is transmitted to the joist 1 through the floor substrate 2 and is supported by the main structural part of the building. The floor sound insulation sheet 10 shown in FIG. 7 is similar to the floor sound insulation sheet according to the first embodiment.
Improve the sound insulation performance, vibration damping performance, shock absorbing performance, heat insulation performance, water resistance performance, etc. of the floor structure. In addition, floor sound insulation sheet 1
0 and the first cross-sectional shape shown in FIGS.
Since it is substantially the same as the floor sound insulation sheet of the embodiment, further detailed description is omitted.

FIG. 8 is a plan view exemplifying various planar patterns of the closed-cell enclosure placed on the sound insulating sheet. The closed-cell enclosure 12 shown in FIGS.
Is shaped into a square, hexagonal, triangular, or rhombic planar shape, respectively, and the closed-cell enclosure 12 shown in FIGS. 8E and 8F is formed into a linear or curved linear shape, respectively. . The closed-cell enclosure 12 may be arbitrarily designed in such a form of a regular repeating pattern, and may be appropriately designed in any plane form including an unspecified plane form such as an irregular embossed pattern. Can be.

FIG. 9 is a partially enlarged longitudinal sectional view showing the structure of a floor sound insulating sheet according to a third embodiment of the present invention. In the present embodiment, the lower sheet 15 and the upper sheet 16 have bulging portions 17 bulging downward and upward, respectively, and are formed into a substantially vertically symmetrical cross-sectional shape. The welded portions 13 of the upper and lower sheets 15 and 16 are composed of the floor base plate 2 and the floor finishing material 3.
Between the upper and lower floors to isolate fluid communication or mutual ventilation. The floor loading load acting on the floor finishing material 3 transmits stress to the floor base plate 2 via the closed-cell enclosure 12, and the floor sound-insulating sheet 10 is similar to the floor sound-insulating sheets according to the first and second embodiments. Improve the sound insulation performance, vibration damping performance, shock absorbing performance, heat insulation performance, water resistance performance, etc. of the floor structure.

FIG. 10 is a partially enlarged longitudinal sectional view showing the structure of a floor sound insulating sheet according to a fourth embodiment of the present invention. The floor sound insulation sheet 10 of the present embodiment has a structure similar to that of the floor sound insulation sheet of the first embodiment in that the floor sound insulation sheet 10 includes a flat lower sheet 15 and a lower sheet 15 having a bulging portion 17. However, each bulging portion 17 is arranged relatively close,
The planar distribution density of the closed-cell enclosure 12 exceeds 50%. Each of the enclosures 12 is compressed by the lamination of the floor covering material 3 and flattened as shown in FIG. 10, and the enclosures 12 distributed at a relatively high density are brought into contact with the adjacent enclosures 12 so as to be capable of transmitting stress. Contact. The enclosure 12 forms a substantially continuous air layer between the floor covering 2 and the floor covering 3, and the floor loading load acting on the floor covering 3 is applied to the floor covering 2 via the continuous air layer. Stress transmission, floor sound insulation sheet 10,
As with the floor sound insulation sheets according to the first to third embodiments, the sound insulation performance, the vibration suppression performance, the shock absorbing performance, the heat insulation performance, the water resistance performance, and the like of the floor structure are improved.

FIG. 11 is a schematic longitudinal sectional view of a floor structure showing an application example of the floor sound insulating sheet. Floor sound insulation sheet 10
May be arranged not only on the floor base plate 2 but also below the floor base plate 2 or behind the ceiling of the lower floor. For example, as shown in FIG. 11, the floor sound insulation sheet 10 is attached to the entire lower surface of the floor base plate 2 via an adhesive or a fastener. The beam 5 supporting the joist 1 suspends the ridge 7 via the suspension tree 6, and the ceiling finishing material 8 of the lower floor is fixed to the ridge 7 via the ceiling base plate (not shown) as required. Is done. The floor sound insulation sheet 10 is further laid above the ceiling finishing material 8 on the lower floor. The floor sound insulation sheet 10 disposed below the floor base plate 2 and above the ceiling finishing material 8 cooperates with the floor sound insulation sheet 10 on the floor base plate 2 to provide sound insulation performance, vibration damping performance, and shock absorbing performance of the floor structure. Improve performance, heat insulation performance and water resistance performance as a whole.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various modifications may be made within the scope of the present invention described in the appended claims. It is needless to say that the modification or the modification is also included in the scope of the present invention.

For example, as a material of the floor sound insulation sheet, it is possible to appropriately employ sheets of various materials having airtightness, watertightness, stretch strength, rupture strength and durability capable of enclosing a fluid for a long period of time. it can. Further, as the fluid,
Not only gases and liquids, but also appropriate gel substances may be used. Further, the floor structure having the above configuration can be applied not only to a wooden building but also to a floor structure of a building having a reinforced concrete structure, a steel frame structure, or a steel reinforced concrete structure.

[0039]

As described above, according to the structure of the present invention as set forth in claims 1 to 4, it is possible to relatively easily interpose between the floor finishing material and the floor support structure, In addition, the floor sound insulation is inexpensive and has a simple structure that can exhibit effective sound insulation performance and vibration damping performance continuously for a long time without causing plastic deformation and squeezing phenomenon due to the action of long-term compressive stress and aging of the material. Sheets can be provided. Furthermore, according to such a floor sound insulation sheet, the sound insulation performance and vibration damping performance of the floor are changed by changing the design of the laminated layer of the sheet or changing the material, dimensions, physical properties, and structural details of each component of the sound insulation sheet. Can be adjusted relatively easily.

Further, according to the structure of the present invention as set forth in claims 5 to 8, without complicating the floor construction process,
A floor structure and a floor construction method capable of interposing a floor sound insulation sheet between a floor finishing material and a floor support structure and improving the sound insulation performance and vibration damping performance of the floor as desired.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a floor structure of a wooden building provided with a floor sound insulation sheet according to a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of the floor structure shown in FIG.

FIG. 3 is a partial plan view and a partially enlarged longitudinal sectional view showing details of the structure of the floor sound insulating sheet shown in FIG. 1;

FIG. 4 is a partial perspective view of the floor sound insulating sheet shown in FIG.

FIG. 5 is a partial vertical sectional view of the floor structure shown in FIG.

FIG. 6 is a partial longitudinal sectional view of a floor structure showing a modification of the floor construction method using a floor sound insulating sheet.

FIG. 7 is a partial perspective view showing a floor structure of a wooden building provided with a floor sound insulation sheet according to a second embodiment of the present invention.

FIG. 8 is a plan view exemplifying patterns of various planar forms of a closed-cell enclosure placed on a floor sound insulating sheet.

FIG. 9 is a partially enlarged longitudinal sectional view showing a configuration of a floor sound insulating sheet according to a third embodiment of the present invention.

FIG. 10 is a partially enlarged longitudinal sectional view showing a configuration of a floor sound insulating sheet according to a fourth embodiment of the present invention.

FIG. 11 is a schematic vertical sectional view of a floor structure showing an application example of the floor sound insulating sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joist 2 Floor base plate 3 Floor finishing material 10 Floor sound insulation sheet 11 Sheet-like substrate 12 Closed cell enclosure 13 Welding part 14 Sealing part 15, 16 Resin sheet 17 Swelling part 18 Air layer

Claims (8)

[Claims] 1. A sound insulation sheet interposed between a floor support structure and a floor finishing material to prevent noise transmission between an upper floor and a lower floor, wherein the sound insulation sheet extends above the floor support structure. It has a sheet-like substrate and a plurality of fluid sealing portions swelling from the substrate and distributed on the substrate surface at a predetermined interval from each other, and the fluid sealed in the sealing portion supports the floor finishing material. A floor sound insulation sheet that transmits a load on an upper floor to a floor support structure and suppresses noise transmission between an upper floor and a lower floor. 2. The fluid according to claim 1, wherein the fluid comprises air filled at a predetermined filling rate in the sealed portion, and the air in the sealed portion is
The sound insulation sheet according to claim 1, wherein the sound insulation sheet is compressed by a floor load on an upper floor. 3. The sound insulation sheet comprises upper and lower resin sheets. The resin sheets are mutually bonded or welded in a region between the fluid sealing portions, and are separated from each other in a region of the fluid sealing portion. The floor sound insulation sheet according to claim 1 or 2, wherein a fluid storage chamber capable of enclosing a fluid is defined. 4. The fluid sealing portion is formed by a swelling portion of the sheet-like substrate shaped into a predetermined planar shape, and the swelling portion is dispersed on the sound insulating sheet at a predetermined planar distribution density. The sound insulation sheet according to any one of claims 1 to 3, wherein a planar distribution density of the bulging portion is set to less than 50%. 5. A floor structure comprising the sound insulation sheet according to claim 1, a floor support structure and a floor finishing material, wherein the sound insulation sheet is an upper floor and a lower floor. In order to prevent noise transmission between the floor support structure and the floor covering material, the fluid sealed in the fluid sealing portion supports the floor covering material and reduces the load on the upper floor. A floor structure that transmits to a support structure and suppresses noise transmission between an upper floor and a lower floor. 6. The floor structure according to claim 5, wherein the plurality of sound insulation sheets are stacked in a multilayer structure. 7. A method for constructing a floor structure comprising a sound insulation sheet according to claim 1 and a floor support structure and a floor finishing material, wherein the sound insulation sheet is formed of a floor support structure. Laying on the upper surface, laying a floor finishing material on the sound insulating sheet and compressing the fluid sealing portion, supporting the floor finishing material on the floor support structure via the fluid sealed in the sealing portion, A floor construction method comprising transmitting a load on an upper floor to a floor support structure and suppressing noise transmission between an upper floor and a lower floor. 8. The sound-insulating sheet is vertically stacked, and the fluid sealing portion of the upper sound-insulating sheet is inserted into an area of a flat lower sheet-like substrate located between the fluid sealing portions of the lower sound-insulating sheet; The floor construction method according to claim 7, wherein the fluid sealing portion of the lower sound insulating sheet is inserted into a region of a flat upper sheet-like substrate located between the fluid sealing portions of the upper sound insulating sheet.