JP6531192B1 - Floor materials - Google Patents

Abstract

An object is to provide a joint floor material which is easy to install and is excellent in vibration isolation and sound insulation. A floor covering material 11, a sound insulation foundation material 12, and a floor foundation material 13 are laminated in order from the top, and in a floor material 10 provided between layers of a building, It comprises so that it may have two rectangular insulation boards 12a and 12b laminated | stacked and fixed in the state which each shifted in the horizontal direction. [Selected figure] Figure 2

Description

    BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a floor of a two-story or more building such as an apartment house, and more particularly to a technology for suppressing the propagation of sound and vibration generated on the upper floor to the lower floor.

    Conventionally, in a two-story or more building such as an apartment house, it is suppressed that floor impact noise and vibration caused by walking of people on upper floors, movement of furniture such as chairs, falling of objects are propagated downstairs Various methods have been proposed for this purpose. For example, in Patent Document 1, a shock absorbing material such as glass wool is provided on the lower surface of a wood panel to integrate the floor panel as an integrated floor, and the floor impact force or vibration acting on the wood panel in the upper floor is absorbed by the shock absorbing material. There is disclosed a method of suppressing the sound and vibration generated in the upper floor from being propagated to the lower floor by performing the control.

Japanese Utility Model Publication No. 63-17229

    However, in the floor panel, the shock absorbing material is formed thick enough to sufficiently absorb the floor impact force and the vibration. Therefore, in the above-mentioned floor panel, sinking of shock absorbing material is large, the position of the real part of the adjacent floor panel shifts at the time of construction, and it can not fit well, and there was a problem of taking time in construction. In addition, when the sinking of the shock absorbing material is extremely large, it is necessary to paste the waste covering material on the floor joists in order to stabilize the floor panel, and there is a further problem that it takes time for construction.

    This invention is made in view of such a point, The objective is to provide the joint-floor material which was easy to install and was excellent in anti-vibration property and sound insulation.

    In order to achieve the above object, according to the present invention, the sound insulation foundation provided between the floor covering of the joint flooring and the floor foundation provided between the levels of the building is shifted in the longitudinal direction and the lateral direction, respectively. It was configured to have two rectangular insulation boards stacked in a folded state.

Specifically, in the first and second inventions, the floor covering material, the sound insulation foundation material and the floor foundation material are laminated in order from the top, and the floor covering material is provided between the levels of the building, The sound insulation base material is characterized by having two rectangular insulation boards laminated in a state of being shifted in the longitudinal direction and the lateral direction.

In the first and second inventions, two insulation boards intervene between the floor covering of the joint flooring and the floor base. Since the insulation board is made of wood fibers and has a porous structure, it is easy to absorb sound and vibration, and is excellent in vibration isolation and sound insulation. Therefore, according to the floor material having such a sound insulation base material, it is possible to suppress the propagation of the sound and vibration generated in the upper floor to the lower floor.

    Further, the two insulation boards are formed in a rectangular shape, and are stacked and fixed in a state of being shifted in each of the longitudinal direction and the lateral direction. With such a configuration, the peripheral side surface of the sound insulation foundation material is formed in a joint structure. Therefore, when laying the sound insulation base material on the floor base material, adjacent sound insulation base materials can be easily connected by joint joining. That is, the sound insulation base material can be easily applied.

As described above, according to the first and second aspects of the invention, it is possible to provide a floor covering that is easy to install and that is excellent in vibration isolation and sound insulation.

The first invention is characterized in that, in the above-mentioned configuration , the sound insulation base material has a shock absorbing material fixed to the lower surface of the lower insulation board of the two insulation boards. It is said that.

In the first invention, the shock absorbing material is provided on the lower surface of the two insulation boards of the sound insulation base material, so that the floor impact force acting on the upper surface of the joint floor material is also absorbed by the shock absorbing material. . Therefore, according to the first aspect of the present invention, it is possible to provide a joint floor material that is further excellent in vibration isolation and sound insulation.

Further , according to the first aspect of the invention, if the thickness of the shock absorbing material is made thin and the density is made high, the sinking of the sound insulation foundation material can be suppressed, and it is not necessary to provide a disposal material.

In the second aspect of the present invention, in the above configuration, each insulation board is configured as a water repellent coated surface whose surface is coated with water repellent, while the back surface is configured as a non-water repellent coated surface which is not water repellent coated In the sound insulation base material, the two insulation boards are characterized in that the back surfaces are adhered and fixed.

In the second invention, two insulation boards having a water repellent coating on the surface are used as the sound insulation base material. Therefore, it is possible to prevent the sound insulation base material from absorbing water due to water wetting during storage or construction.

By the way, the above-mentioned insulation board is formed by applying water repellent coating to the surface after wet sheet forming and drying it, but when the water repellent coating is applied only to the surface, the water repellent coating is applied in the drying step. Since the water evaporates more from the back side where the water-repellent coating is not applied than the surface on which the water is applied, the back side shrinks and after drying, the front side warps so as to be convex.

Therefore, in the second invention, the two insulation boards of the sound insulation base material are fixed by adhering the back surfaces not coated with the water repellent coating. By bonding the back surfaces of the two insulation boards warped so that the surface side is convex as described above, the two insulation boards are pulled together, and the warpage of each other is suppressed.

A third invention according to the second invention is characterized in that the sound insulation base material has a shock absorbing material fixed to the lower surface of the lower insulation board of the two insulation boards. It is said that.

In the third invention, the shock absorbing material is provided on the lower surface of the two insulation boards of the sound insulation base material, so that the floor impact force acting on the upper surface of the joint floor material is also absorbed by the shock absorbing material. . Therefore, according to the third aspect of the present invention, it is possible to provide a joint floor material that is further excellent in vibration isolation and sound insulation.

Further, according to the third aspect of the invention, if the thickness of the buffer material is made thin and the density is made high, the sinking of the sound insulation foundation material can be suppressed, and therefore, it is not necessary to provide a disposal material.

In a fourth invention according to any one of the first to third inventions, the sound insulation foundation material is an upper projecting portion in which the upper insulation board protrudes more than the lower insulation board. The insulation board under the other sound insulation base material adjacent to the upper projection part side of the sound insulation base material is provided so as to overlap the lower projection part protruding more than the upper insulation board It is a feature.

In the fourth invention, when the sound insulation foundation material is laid on the floor foundation material, the upper protruding portion of the sound insulation foundation material to be installed next is overlapped on the lower protruding portion of the sound insulation foundation material installed earlier. By fixing, it is possible to easily connect adjacent sound insulation base materials. That is, the sound insulation base material can be easily applied .

In a fifth invention according to the first invention, the lower surface of the lower insulation board is formed of a water repellent coated surface coated with water repellent, and the buffer material is adhered by an adhesive.

    In the fifth invention, the lower insulation board of the two insulation boards of the sound insulation base material is formed on the water-repellent coated surface which is water-repellent coated. Therefore, it is possible to prevent the sound insulation base material from absorbing water due to water wetting during storage or construction.

    In the fifth aspect of the invention, the lower surface of the lower insulation board of the two insulation boards of the sound insulation base material is a water repellent coated surface, and the buffer material is adhered to the lower surface with an adhesive. And That is, in the fifth invention, the adhesive is applied to the water-repellent coated surface of the lower insulation board. By thus making the water-repellent coated surface the application surface of the adhesive, it is possible to prevent the adhesive from unnecessarily entering the insulation board. Further, as compared with the case where the adhesive is applied to the non-water-repellent coated surface, the wetting of the adhesive is stabilized, so that the adhesion of the buffer material is improved, and the amount of the adhesive applied can be reduced.

    As described above, according to the present invention, the sound insulation foundation provided between the floor covering of the floor covering and the floor foundation provided between the levels of the building is shifted in the longitudinal direction and the lateral direction. By having two rectangular insulation boards stacked, it is possible to provide a floor covering that is easy to install and is excellent in vibration isolation and sound insulation.

FIG. 1 is a cross-sectional view showing a joint floor structure between layers provided with a joint floor material according to an embodiment of the present invention as viewed from the front. FIG. 2 is a cross-sectional view showing the interface floor structure of FIG. 1 as viewed from the side. FIG. 3 is a plan view of the floor covering. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 5 is a perspective view of the sound insulation base material. FIG. 6 is a cross-sectional view of the sound insulation base material. FIG. 7 is a perspective view showing the installed state of the sound insulation base material. FIG. 8 is a diagram showing the construction procedure of the joint floor material. FIG. 9 is a table showing the results of measuring the floor impact sound level of the joint flooring according to the example of the present invention and the comparative example under the measurement condition 1. FIG. 10 is a table showing the results of measuring the floor impact sound level of the joint flooring according to the example of the present invention and the comparative example under the measurement condition 2

    Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present invention, its applications, or its applications.

Embodiment 1 of the Invention
In this embodiment, as an example of the joint floor material according to the present invention, an example provided between the floors of the first floor portion and the second floor portion of a two-story building built by a frame wall method (2 × 4 method) Will be explained.

-Floor structure-
FIG. 1 and FIG. 2 show a structure (ground floor structure) between the levels of the first floor portion and the second floor portion of the building provided with the joint floor material 10. As shown in FIG. 1 and FIG. 2, an upper structure 1, a floor material 10 and a ceiling material 16 are provided between the layers.

    The superstructure 1 is a housing disposed between the first floor portion and the second floor portion of the building, and has a surrounding material 2 (floor beam material) and a plurality of floor joists 3. The surrounding material 2 is constituted by two-ply wood, and is supported by columns (not shown) in the wall W located on the lower side. The surrounding material 2 and the floor joists 3 are respectively made of 38 × 235 mm wood. The floor joists 3 are made of two-ply wood and are bridged to the surrounding material 2 by fixing the end portions thereof to the surrounding material 2 by floor joist fixing brackets (not shown).

    The interfloor material 10 is provided on the upper structure 1 and supported by the upper structure 1. The floor material 10 is formed by laminating the floor finish 11, the sound insulation foundation 12 and the floor foundation 13 in order from the top. The detailed structure of the joint flooring 10 will be described later.

The ceiling material 16 is made of, for example, reinforced gypsum board, and is bridged in parallel to the floor joists 3 in the surrounding timber 2 (the side of the frame) of the superstructure 1 at a position between the floor joists 3, 3 It is supported by several ceiling joists 15. The ceiling material 16 is directly attached and fixed to the lower surface of the ceiling joists 15 by a tapping screw (not shown) as a fixture. As shown in FIGS. 1 and 2, sound insulation glass wool 17 having a density of 24 kg / m ³ and a thickness of 50 mm is placed and fixed on the ceiling material 16.

    Both ends of the ceiling joists 15 are supported with respect to the surrounding member 2 of the upper structural body 1 via the ceiling joist anti-vibration mounting bracket 21. In addition, as shown in FIG. 1, in each of the ceiling joists 15, at both ends fixed to the anti-vibration mounting bracket 21 for ceiling joists, notches where the lower side corners of the ends are cut out in a rectangular shape 15a, 15a are formed.

    The anti-vibration mounting bracket 21 includes a base fitting 22 and a root fitting 28 facing each other, and a rubber elastic body 40 disposed between the base fitting 22 and the root fitting 28.

    The above-mentioned base metal fitting 22 is made of a rectangular, press-formed product of a metal plate material such as an iron plate, and the left and right side parts (left and right end parts in FIG. 2) The insertion holes 22a are formed vertically in parallel. As shown in FIG. 2, the left and right screw insertion holes 22 a of the base metal fitting 22 are provided asymmetrically with respect to the left and right center positions of the base metal fitting 22.

    Then, a tapping screw S (see FIG. 1) as a fixing tool is inserted into each screw insertion hole 22a, and the tapping screw S is screwed into the surrounding member 2 of the upper structure 1 to fasten the base fitting 22. Are attached to and fixed to the surrounding member 2 (the side of the casing) of the upper structure 1.

    On the other hand, the metal fitting 28 is a press-formed product of a metal plate material such as an iron plate disposed to face the base fitting 22 in the horizontal direction, and the rectangular flat base 29 and upper and lower intermediate portions of the base 29 The left and right side walls 30 which are continuous to the left and right side ends and bent so as to extend from the left and right sides to the opposite side to the base fitting 22 and the lower end of the base 29 are connected to the opposite side to the base fitting 22 from the lower end And a bottom wall portion 31 bent to extend. The base 29, the left and right side walls 30, 30 and the bottom wall 31 form an approximately box shape opened on the upper side and the opposite side to the base metal fitting 22, and the end of the ceiling joist 15 is fitted in the inside It is supposed to be integrated. As shown in FIG. 1, the end portion of the ceiling joist 15 is a portion surrounded by the base portion 29, the left and right side wall portions 30, and the bottom wall portion 31, and the horizontal surface on the upper side in the cutout portion 15a of the end portion is on the bottom wall portion 31. And fit so that the lower side of the horizontal surface is located lower than the bottom wall 31, and the tapping screw S is ceilinged through the respective screw insertion holes of the left and right side walls 30 and the bottom wall 31. The mounting bracket 28 is attached to and fixed to the ceiling joists 15 by screwing and fastening the joists 15.

    The rubber elastic body 40 is made of solid rubber in a rectangular solid shape, and one end thereof is on the surface of the base fitting 22 opposite to the base 29 of the end fitting 28 and the other end is on the base fitting 22 at the base 29 of the end fitting 28. The base metal fitting 22 and the joint metal fitting 28 are connected integrally and vertically movably in the vertical direction by means of the rubber elastic body 40.

    By supporting the ceiling joists 15 on the surrounding members 2 (the side portions of the frame) of the upper structure 1 using such an anti-vibration mounting bracket 21 for ceiling and joists, the surrounding members 2 of the upper structure 1 in the construction state Only the rubber elastic body 40 of the anti-vibration mounting bracket 21 for ceiling joists intervenes between the side and the ceiling joists 15 side (including the ceiling material 16).

<Detailed structure of joint floor material>
As described above, the floor material 10 is configured by sequentially laminating the floor finish 11, the sound insulation foundation 12 and the floor foundation 13 from the top.

[Flooring material]
As shown in FIG. 3 and FIG. 4, the floor covering material 11 is integrally configured by laminating the resin decorative sheet 11 a, the base material 11 b, the resin mat 11 c and the buffer material 11 d in order from the top. The resin decorative sheet 11a, the base 11b, the resin mat 11c, and the buffer material 11d are bonded by an adhesive. The adhesive may be one used in a general bonding operation, and for example, a urea melamine based adhesive, an epoxy based adhesive, a urethane based adhesive, a PUR hot melt adhesive, etc. can be used. .

    The resin decorative sheet 11a may be any sheet having smooth surface, for example, resin-impregnated paper, olefin resin sheet, polyethylene terephthalate resin sheet, etc., or a composite of these sheets, and further, on the surface of these sheets A coated sheet can be used. Moreover, when using the wood fiber board mentioned later as said base material 11b, it is preferable to use the sheet | seat which has moisture resistance and was excellent in intensity | strength so that the base material 11b may not receive to the influence of moisture. In the present embodiment, the resin decorative sheet 11a is configured of an olefin resin sheet having a thickness of 0.14 mm. In addition, although the details will be described later, the floor covering 11 is peeled off from the floor base using a floor material removing tool having a suction cup at the time of remodeling or repair. Therefore, the resin decorative sheet 11a should just have surface smoothness which the suction cup of a flooring removal tool can adsorb | suck.

    The base material 11b should just be comprised with the material which has the flexibility generally used for a floor material, for example, a synthetic resin type | system | group and a wood-based wood base material can be used. In the case of forming the synthetic resin base 11b, a vinyl chloride resin, a synthetic rubber resin, an olefin resin, or a mixture of these resins with a filler may be suitably used. As the filler, a high specific gravity inorganic filler such as calcium carbonate, barium sulfate or aluminum oxide or wood powder is preferable. On the other hand, although a plywood, a particle board, etc. can be used as a wood base material, it is preferable to use a wood fiber board, when the intensity | strength and flexibility of the joint floor material 10 are considered. The wood fiber board preferably has a specific gravity of at least 0.4 and at most 1.0, and further preferably has a specific gravity of at least 0.4 and at most 0.8. MDF) is more preferred. If the specific gravity of the wood fiber board is less than 0.4, it is not possible to obtain the surface-corrosion-resistant high-interference floor material 10, and if the specific gravity is more than 1.0, the swelling occurs when water leaks. Is not preferable because the The wood fiber board preferably has a thickness of 2.0 mm or more and 3.0 mm or less. If the thickness is less than 2.0 mm, the amount of denting due to the impact from the surface side increases when using the floor material 10 as a floor material, and if the thickness is greater than 3.0 mm, the floor material 10 It is not preferable because the flexibility of the In the present embodiment, the base material 11 b is configured of a medium specific gravity wood fiber board (MDF) having a thickness of 2.7 mm.

    In order to have flexibility, the base material 11b is generally grooved on the back surface at regular intervals. However, when the groove processing is performed, moisture is introduced into the base material 11 b to cause deformation of the floor material 10. In addition, when the base material 11b is subjected to the groove processing, the groove portion is visible from the surface side of the joint floor material 10, which is not preferable in design. Furthermore, it is not preferable in design if groove processing is performed in both directions in order to obtain flexibility in both the width direction and the longitudinal direction of the joint floor material 10. Therefore, in the first embodiment, the base material 11b having flexibility in the width direction and the longitudinal direction is used without performing the groove processing on the back surface.

    The resin mat 11c is particularly necessary when using a wood base material as the base material 11b, has a moisture proof effect that is not affected by moisture from the back surface, and can secure the adhesive strength with the construction adhesive What is necessary. For example, the resin mat 11c can be configured using a vinyl chloride resin, a urethane resin, a latex resin, a synthetic rubber resin, a polyester resin, modified products of these resins, various recycled plastics, etc. . The resin mat 11c is selected and used according to the combination in consideration of the adhesion appropriateness of the construction adhesive to be used. From the viewpoint of adhesion and quality stability, a resin mat 11c made of a vinyl chloride resin is suitably used. Moreover, in order to ensure desired adhesive strength and moisture resistance, the thing in which the pre-adhesion process is performed to front and back of a resin sheet can also be used. As a resin sheet on which this adhesion pre-treatment is performed, for example, a polysand paper, a double-sided sealer-treated resin sheet, a sheet subjected to corona treatment or plasma treatment, or the like is used. Polysand paper is obtained by thermally welding paper to the front and back surfaces of a thin sheet of about 10 μm to 150 μm, such as polyethylene, polypropylene, polyester and the like.

    In the present embodiment, the resin mat 11c is filled with an inorganic filler so that the specific gravity is 1.4 or more and 2.0 or less, and the thickness 3.0 mm equivalent to the thickness of the wood fiber board as the substrate 11b. The vinyl chloride-based resin sheet of Thereby, the well-suited interface floor material 10 can be provided. This vinyl chloride resin-based resin sheet is, for example, filled with an inorganic filler at a ratio of about 100 to 1000% by weight with respect to 100 weight of vinyl chloride resin, mixed and then sheet-formed by a calendar extrusion molding method . When the amount of the inorganic filler to be filled is small, the dimensional change due to the temperature change of the sheet after forming becomes large, and when it is too large, the forming of the sheet becomes difficult. Furthermore, the resin sheet is preferably designed to be easily deformed or broken in order to peel off the floor material 10. As the inorganic filler, calcium carbonate, barium sulfate, silica, alumina, carbon black, metal powder, metal oxide and the like are used.

    The resin mat 11c may not be used when the wood base is not used as the base 11b. However, in the case of using a wood base material as the base material 11b, the resin mat 11c having a moisture-proof effect is used in order to prevent the boundary floor material 10 from being deformed by the introduction of moisture into the base material 11b.

The cushioning material 11d may be a cushioning material that is moisture proof and has cushioning properties. As the cushion material, any material can be used as long as it has a certain breaking strength, such as a synthetic resin foam or a synthetic resin nonwoven fabric subjected to heat embossing roll fusion processing. It is preferred to use the body. A cushion material having an apparent specific gravity of 20 to 80 kg / m ³ , preferably 35 to 60 kg / m ³ and a thickness of about 1 to 6 mm is suitably used as the cushioning material 11 d. Furthermore, a plurality of cushioning materials may be stacked, and the cushioning material 11d may be appropriately selected according to the required sound insulation.

    For example, although a material is not limited as a synthetic resin nonwoven fabric, an olefin resin nonwoven fabric, a polyethylene terephthalate resin nonwoven fabric, a polyester resin nonwoven fabric, etc. can be used. When using a non-woven fabric, it is necessary to perform roll fusion processing in order to improve the peel fracture strength of the non-woven fabric.

    Further, as the resin foam, although the material is not limited, those made of foam synthetic resin are preferable, and specifically, polyurethane foam, polyethylene foam, polypropylene foam, polystyrene foam, polyvinyl chloride foam, Examples thereof include polymethyl methacrylate foam, polycarbonate foam, polyphenylene oxide foam, and foam of a mixture of polystyrene and polyethylene. The resin foam may be selected appropriately in consideration of compatibility with the construction adhesive to be used, but in consideration of the breaking strength, cushioning property, durability, etc., polyurethane foam or polyvinyl chloride foam is preferable. preferable.

    In addition, when using the resin mat 11c which has a moisture-proof effect for the inter-floor material 10, and when not using a wood base material as the base material 11b, 11 d of shock absorbing materials do not need to have moisture-proof property.

    As described above, the floor covering 11 is a plate having a thickness of 9.34 mm, a width of 150 mm, and a length of 910 mm, in which the resin decorative sheet 11a, the base material 11b, the resin mat 11c, and the buffer material 11d are sequentially stacked from the top. It is composed of the body. Further, on each side of the side surface on the periphery of the floor covering 11, a male 14a made of a convex strip formed by cutting away both end portions in the thickness direction and a recessed strip formed by cutting out a central portion in the thickness direction A female fruit 14b is formed. Specifically, on one side of the long side opposite to the width direction of the floor covering 11, a male fruit 14a is formed, and on the other, a female fruit 14b to which the male fruit 14a can be fitted is formed. Similarly, a male fruit 14a is formed on one of the short side surfaces opposed in the length direction of the floor covering 11, and a female fruit 14b to which the male fruit 14a can be fitted is formed on the other. The male fruit 14a and the female fruit 14b are formed across the base material 11b of the floor covering 11 and the resin mat 11c.

    The floor coverings 11 are continuous so that a plurality of sheets are adjacent to each other, and are adhered to the sound insulation foundation 12 by a construction adhesive. At this time, the floor covering 11 is made by fitting the male fruit 14a of the long side surface to the female fruit 14b of the long side surface of the adjacent floor covering material 11, and the floor covering material 11 adjacent the male fruit 14a of the short side surface. It is connected to the adjacent floor covering 11 by fitting it to the fruit 14b of the short side of the side face, and is configured to form a flush floor surface with the adjacent floor covering 11.

[Adhesive for construction]
The adhesive for construction for bonding the floor finish 11 to the sound insulation base material 12 is an adhesive which is weaker than the peel strength between the components 11a to 11d of the floor finish 11 and weaker than the breaking strength of the buffer 11d. It is an elastic adhesive having peel strength. The elastic adhesive includes, for example, a special silicone resin or a modified silicone resin in which a cured product has rubbery elasticity. In addition, since the elastic adhesive has rubber elasticity and desired adhesive strength, an epoxy resin, an acrylic resin, a urethane resin or the like may be additionally blended. As the elastic adhesive, for example, a silicone-based adhesive in which a urethane-based adhesive, an epoxy-based adhesive or the like is blended, a modified product of these, or the like can be used. Then, the adhesive peel strength is adjusted by filling an inorganic filler or the like so that the adhesive for construction has an adhesive peel strength weaker than a high strength adhesive peel strength like a general adhesive. A filler of about 50 to 1000% by weight may be added to 100 parts by weight of the main component of the construction adhesive, and a part of the filler may be replaced with a hollow inorganic filler.

    Since the floor covering 11 has a person on it, a continuous load acts over a long period of time, and the buffer material 11d is deformed each time this load acts. If a urethane adhesive or epoxy adhesive is used as the construction adhesive, it becomes a hard and brittle cured product, so if the floor covering material 11 is used for a long time, the construction will be continued if the buffer material 11d changes continuously. There is a risk that the adhesive may be broken. Since the floor covering material 11 of the first embodiment has flexibility and is provided with the shock absorbing material 11, the construction adhesive peels between the components 11a to 11d by being filled with a filler. The adhesive is adjusted to have an adhesive peel strength that is weaker than the strength, and is an elastic adhesive having rubber elasticity.

[Sound insulation base material]
As shown in FIG. 5 to FIG. 7, the sound insulation foundation material 12 is configured by laminating two insulation boards 12 a and 12 b and a buffer material 12 c in order from the top.

    The two insulation boards 12a and 12b are constituted by insulation boards of equal size. Specifically, in the present embodiment, the two insulation boards 12a and 12b are each constituted by an insulation board with a thickness of 12 mm, a width of 910 mm, and a length of 1820 mm. The two insulation boards 12a and 12b are stacked in a state of being shifted in the longitudinal direction (length direction) and the lateral direction (width direction). In this embodiment, the two insulation boards 12a and 12b are laminated in a state of being shifted by 25 mm in the longitudinal direction and the lateral direction, and are adhered to each other by an adhesive.

As the insulation boards 12a and 12b, it is preferable to use a sheathing board treated with a phenol resin or the like and having a specific gravity of 0.3 g / cm ³ or more and less than 0.4 g / cm ³ . The sheathing board has high strength in the insulation board, is lighter than plywood and the like, and is easy to absorb vibrations. Therefore, by using a sheathing board as the insulation boards 12a and 12b, it is possible to configure the sound insulation base material 12 having high strength and excellent vibration resistance.

    In the present embodiment, the two insulation boards 12a and 12b are configured as a water repellent coated surface whose surface is coated with water repellent, and the back surface is configured as a non-water repellent coated surface which is not water repellent coated. The two insulation boards 12a and 12b are fixed by adhering the back surfaces of the non-water repellent coated surfaces with an adhesive. By bonding the back surfaces of the two insulation boards 12a and 12b in this manner, the sound insulation base material 12 is configured to be flat.

    Specifically, the insulation boards 12a and 12b are formed by applying water repellent coating to the surface after wet sheet forming and then drying it, but when the water repellent coating is applied only to the surface, the case of the drying process In addition, since the water evaporates more from the back surface side where the water repellent coating is not applied than the surface on which the water repellent coating is applied, the back surface side shrinks and after drying, the surface side is warped so as to be convex. However, by bonding the back surfaces of the two insulation boards 12a and 12b that are warped so that the front surface side is convex in this way, the two insulation boards 12a and 12b pull each other, and the warpage of each other becomes It will be suppressed and it will be comprised uniformly.

The shock absorbing material 12 c may have a function of absorbing a floor impact force acting on the upper surface of the joint floor 10 and a floor impact noise. As the buffer material 12c, for example, a non-woven fabric made of synthetic resin fibers such as polyester fibers or polyethylene fibers, or a resin foam such as a urethane foam can be suitably used. In the present embodiment, the cushioning material 12c is a non-woven fabric of 600 g / m ² , 7 mm thick, 910 mm wide and 1820 mm long, and is bonded to the lower insulation board 12a, 12b. An adhesive is adhered to the lower surface of the clearance board 12b. The adhesive may be one used in a general bonding operation, and for example, a urea melamine based adhesive, an epoxy based adhesive, a urethane based adhesive, a PUR hot melt adhesive, etc. can be used. .

    As described above, the two insulation boards 12a and 12b are fixed to each other by bonding the back surfaces which are non-water repellent coated surfaces on which the water repellent coating is not performed. Therefore, the upper insulation board 12a is provided so that the surface that is the water repellent coated surface is the upper surface and the back surface that is the non-water repellent coated surface is the lower surface, and the lower insulation board 12b is non-water repellent It will be provided so that the back side which is a painted side may turn into an upper surface, and the surface which is a water-repellent painted side may turn into a lower surface. That is, the buffer material 12c is adhered to the lower surface of the lower insulation board 12b to which the water repellent coating is applied. Therefore, when the buffer material 12c is fixed to the lower surface of the lower insulation board 12b, the adhesive is applied to the water-repellent coated surface of the lower insulation board 12b. By using the water-repellent coated surface as the adhesive coated surface as described above, it is possible to prevent the adhesive from unnecessarily entering the insulation board 12b. In addition, since the wetting of the adhesive is stabilized compared to the case where the non-water-repellent coated surface is the application surface of the adhesive, the adhesiveness of the buffer material 12c is improved, and the amount of the adhesive applied can be reduced. .

    As described above, the sound insulation foundation material 12 is a plate-like member having a thickness of 31 mm, a width of 910 mm, and a length of 1820 mm, in which the two insulation boards 12a and 12b and the shock absorbing material 12c are laminated sequentially from the top Is configured. Moreover, in the sound insulation base material 12, as described above, the peripheral side surfaces are formed in a joint open structure by shifting and laminating the two insulation boards 12a and 12b.

    Specifically, on one of the long side surfaces facing in the width direction of the sound insulation foundation material 12, an upper protrusion A is formed in which the upper insulation board 12a protrudes more than the lower insulation board 12b, A lower protrusion B is formed in which the lower insulation board 12b protrudes more than the upper insulation board 12a. Similarly, on one of the short side surfaces opposed in the lengthwise direction of the sound insulation foundation material 12, an upper protrusion A is formed in which the upper insulation board 12a protrudes more than the lower insulation board 12b, The lower projection B is formed by projecting the lower insulation board 12b than the upper insulation board 12a. The upper protrusion A formed on one of the long side surface and the short side surface of the sound insulation foundation material 12 is formed in the same shape as the lower protrusion B formed on the other.

    The detailed construction procedure will be described later, but as shown in FIG. 7, the sound insulation foundation 12 is overlapped on the lower side projection B of the long side surface of the sound insulation foundation 12 adjacent to the upper projection A, The upper side protruding portions A of the side surfaces are overlapped and disposed on the lower side protruding portions B of the short side surfaces of the sound insulation foundation material 12 adjacent to each other.

[Floor base material]
The floor base material 13 is configured by laminating an ALC (lightweight aerated concrete) panel 13a and a structural plywood 13b such as OSB in order from the top. The ALC panel 13a and the structural plywood 13b are fixed by screws 5 (see FIG. 2). In addition, the floor base material 13 may use a general thing.

    As described above, the interfloor material 10 is configured by sequentially laminating the floor finish 11, the sound insulation foundation 12 and the floor foundation 13 from the top. In addition, the interfloor material 10 has a sound insulation property by providing the sound insulation foundation material 12 consisting of two insulation boards 12a and 12b and the shock absorbing material 12c between the floor finish material 11 and the floor foundation material 13. It has a dry floating floor structure.

-Installation procedure of floor materials-
First, as shown in FIG. 8A, the floor base material 13 is laid on the upper structure 1. Specifically, first, the structural plywood 13b is laid on the surrounding material 2 and the floor joists 3 and the structural plywood 13b is fixed to the upper structural body 1 with the screws 6 (see FIG. 2). Then, the ALC panel 13a is laid on the structural plywood 13b, and the ALC panel 13a is fixed to the structural plywood 13b with the screws 5 (see FIG. 2). In this manner, the floor foundation 13 is laid on the upper structure 1.

    Next, as shown in FIG. 8A, the sound insulation foundation 12 is laid on the floor foundation 13. Specifically, first, the sound insulation foundation material 12 is laid on the floor foundation material 13 at the wall W, and the adhesive 50 is applied in a linear shape with a diameter of about 8 mm on the upper surface of the lower protrusion B of the sound insulation foundation material 12 Do. Then, the upper protruding portion A of the sound shielding base material 12 to be installed next is overlapped on the lower protruding portion B of the sound shielding base material 12 previously installed, and is bonded with the adhesive 50 (see FIG. 8B) . After that, the joint portion of the adjacent sound insulation foundation material 12 bonded with the adhesive 50, that is, the overlapping portion of the upper protrusion A on one side and the lower protrusion B on the other side is fixed with a screw 51 (see FIG. 8 (c)). As described above, by integrating and fixing the plurality of sound insulation base materials 12 firmly with the adhesive 50 and the screws 51, the plurality of sound insulation base materials 12 become large single plate-like members, and the force acts. It won't shift or move. Therefore, the sound insulation foundation material 12 does not rub against the floor finishing material 11 or the floor foundation material 13 to produce no noise. Thus, by integrating the plurality of sound insulation foundation materials 12 in this manner, the sound insulation of the joint floor material 10 is improved.

    As the screw 51, a screw having a length substantially equal to the thickness (24 mm) of the two insulation boards 12a and 12b of the sound insulation base material 12 may be used so as not to abut on the floor base material 13. preferable. When the screws 51 abut on the floor base material 13, vibrations are transmitted to the floor base material 13 by the screws 15. Therefore, by preventing the screws 51 from coming into contact with the floor base material 13 by using the screws 51 having the length as described above, the anti-vibration property of the floor material 10 is improved.

    In this manner, sequentially from the wall of the wall W, the upper protruding portion A of the sound shielding base material 12 to be installed next is superimposed on the lower protruding portion B of the sound shielding base material 12 previously installed. A plurality of the sound insulation base materials 12 are laid on the floor base material 13 in accordance with the shape of the room while connecting the adjacent sound insulation base materials 12 (see FIG. 7).

    Thereafter, as shown in FIG. 8 (d), the floor covering 11 is laid on the sound insulation foundation 12. Specifically, as in the case of the sound insulation foundation material 12, the floor covering material 11 is laid on the sound insulation foundation material 12 from the side of the wall W. At this time, the male and female 14a and female 14b of the long side of the floor covering material 11 adjacent to each other are fitted, and the male and female 14a and female and 14b of the short side are fitted to match the shape of the room. A plurality of floor coverings 11 are laid on the sound insulation foundation 12. In the present embodiment, the floor covering material 11 is an elastic adhesive which has an adhesive peeling strength weaker than the peeling strength between the components 11a to 11d of the floor covering 11 and weaker than the breaking strength of the buffer material 11d. It is adhered to the sound insulation base material 12 using an agent. By bonding the floor finish 11 to the sound insulation base material 12 using such an elastic adhesive, the floor finish 11 can be easily peeled off when the floor finish 11 is replaced or repaired, and the floor finish can be easily finished. Material 11 can be removed. On the other hand, by using the above-mentioned elastic adhesive, even if the floor finish 11 is not fixed by a screw or the like, it is fixed so as not to move on the sound insulation base 12 by the adsorption force of the elastic adhesive.

-Renewal procedure of floor space-
Next, a procedure for renewing the floor covering 11 by removing a predetermined floor covering 11 out of a plurality of floor coverings 11 and laying a new floor covering 11 at the removed location will be described.

(Removal work)
The floor material remover used to remove the floor covering 11 has, for example, two suction cups used for glass installation and movement. The suction cups of the floor material removal tool are adsorbed to the central portion of the floor finish 11 (hereinafter referred to as the old floor finish 11) to be removed. Then, by pulling the floor material removal tool so that the female fruit side of the old floor finish 11 is lifted while holding the adjacent floor finish 11, the old floor finish 11 is bent in the longitudinal direction and the width direction. The adhesive is broken and peeled off from the sound insulation base material 12. Specifically, after disengaging the fruit 14b of the old floor finish 11 from the fitting of the floor finish 11 adjacent to the nut 14a, the floor finish 11 adjacent to the old floor finish 11 a of the old floor finish 11 is removed. The old floor covering 11 is removed while shifting the old floor covering 11 sideways so that the fitting with the female fruit 14b is released.

    After removal of the old floor finish 11, the construction adhesive is removed from the exposed portion of the sound insulation foundation 12 from which the old floor finish 11 has been removed using a scraper or the like, and the exposed portion of the sound insulation foundation 12 is new. Apply a construction adhesive. The construction adhesive may be applied to the entire exposed portion of the sound insulation base material 12, or may be applied to the filament in the longitudinal direction or the width direction. Then, the lower portion of the fruit 14b in both the width direction and the longitudinal direction of the floor finish 11 for renewal (hereinafter referred to as the new floor finish 11) is removed.

    Next, the corner portion of the male floor 14a of the new floor covering material 11 is inserted into the exposed portion of the sound insulating base material 12, and is engaged with the female floor covering material 11 adjacent to the exposed portion. At this time, after the male stem 14a in the longitudinal direction is fitted into the female nut 14b of the floor finish 11 adjacent to the floor finish 11a, the male nut 14a in the width direction is fitted into the female nut 14b in the floor finish 11 adjacent to the floor finish 11 The new floor finish 11 is sufficiently pressed from above to adhere to the sound insulation foundation 12 so that the surfaces of adjacent floor finishes 11 are flush with each other.

-Effect of Embodiment 1-
According to the first embodiment, the sound insulation foundation 12 provided between the floor finish 11 of the floor assembly 10 and the floor foundation 13 provided between the levels of the building is shifted in the longitudinal direction and the lateral direction. And two rectangular insulation boards 12a and 12b stacked on each other. By configuring the sound insulation foundation material 12 in this manner, two insulation boards 12 a and 12 b are interposed between the floor covering material 11 of the floor material 10 and the floor foundation material 13. Since the insulation boards 12a and 12b are made of wood fibers and have a porous structure, they are easy to absorb sound and vibration, and are excellent in vibration isolation and sound insulation. Therefore, according to the above-mentioned field flooring 10 which has such a sound insulation foundation material 12, the propagation to the downstairs of the sound and vibration which occurred on the upper floor can be controlled.

    Further, the two insulation boards 12a and 12b are formed in a rectangular shape, and are stacked and fixed in a state of being shifted in the longitudinal direction and the lateral direction. With such a configuration, the peripheral side surface of the sound insulation base material 12 is formed in a joint pebbled structure. Therefore, when laying the sound insulation base material 12 on the floor base material 13, it is possible to easily connect the adjacent sound insulation base materials 12 by joint joining. That is, the sound insulation foundation material 12 can be easily applied.

    As described above, according to the first embodiment, it is possible to provide the floor panel 10 which is easy to install and is excellent in the vibration isolation and the sound insulation.

    Further, according to the first embodiment, the shock absorbing material 12 c is provided on the lower surface of the lower insulation board 12 b of the two insulation boards 12 a and 12 b of the sound insulation foundation 12. Therefore, the floor impact force acting on the upper surface of the joint floor 10 is also absorbed by the buffer material 12c. Therefore, according to the first embodiment, it is possible to provide the floor panel 10 which is further excellent in the vibration isolation and the sound insulation.

    In addition, if the thickness of the buffer material 12c is made thin and the density is increased, the sinking of the sound insulation foundation material 12 can be suppressed, and therefore, it is not necessary to provide a disposal material.

    Further, according to the first embodiment, the upper projecting portion A in which the upper insulation board 12a protrudes more than the lower insulation board 12b is the upper projecting part of the sound insulation foundation 12. The insulation board 12b on the lower side of the other sound insulation base material 12 adjacent to the A side is provided so as to overlap on the lower projecting portion B which protrudes more than the insulation board 12a on the upper side. Therefore, when laying the sound insulation foundation material 12 on the floor foundation material 13, the upper protruding portion A of the sound insulation foundation material 12 to be installed next is provided on the lower protruding portion B of the sound insulation foundation material 12 previously installed. By overlapping and fixing, it is possible to easily connect the adjacent sound insulating base materials 12 and 12 to each other. That is, the sound insulation foundation material 12 can be easily applied.

    Further, according to the first embodiment, the insulation substrate 12 uses two insulation boards 12a and 12b having a water repellent coating on the surface. Therefore, it is possible to prevent the sound insulation foundation material 12 from absorbing water due to water wetting during storage or construction.

    By the way, the above-mentioned insulation boards 12a and 12b are formed by applying water repellent coating on the surface after wet sheet forming and drying it, but when the water repellent coating is applied only on the surface, in the case of the drying step, Since the water evaporates more from the back side where the water-repellent coating is not applied than the surface on which the water-repellent coating is applied, the back side shrinks, and after drying, the surface side is warped to become convex.

    So, in this Embodiment 1, two insulation boards 12a and 12b of the sound insulation foundation material 12 were adhered and fixed the back surfaces which are not water-repellent-painted. By bonding the back surfaces of the two insulation boards 12a and 12b warped so that the front side is convex as described above, the two insulation boards 12a and 12b are pulled together, and the warpage of each other is suppressed. Ru.

    Further, in the first embodiment, the lower surface of the lower insulation board 12b of the two insulation boards 12a and 12b of the sound insulation base material 12 is a water repellent coated surface, and the buffer 12c is formed on the lower surface. It was decided to adhere with an adhesive. That is, in the first embodiment, the adhesive is applied to the water-repellent coated surface of the lower insulation board 12b. By using the water-repellent coated surface as the adhesive coated surface as described above, it is possible to prevent the adhesive from unnecessarily entering the insulation board 12b. Further, as compared with the case where the adhesive is applied to the non-water-repellent coated surface, the wetting of the adhesive is stabilized, so the adhesiveness of the buffer material 12c is improved, and the amount of the adhesive applied can be reduced.

    In the first embodiment, floor finishing is performed using an elastic adhesive having an adhesive peel strength that is weaker than the peel strength between the components 11 a to 11 d of the floor covering 11 and weaker than the fracture strength of the buffer material 11 d. It was decided to bond the material 11 to the sound insulation base material 12. By bonding the floor finish 11 to the sound insulation base material 12 using such an elastic adhesive, the floor finish 11 can be easily peeled off at the time of renewal such as replacement of the floor finish 11 or repair. Therefore, since the floor covering material 11 can be easily removed, the update work can be facilitated.

Embodiment 2 of the Invention
The second embodiment is one in which the configuration of the floor covering 11 of the first embodiment is partially changed. Specifically, in the second embodiment, the cushioning material 11 d of the floor covering material 11 is configured to have an adsorption performance.

    The cushioning material 11 d of the floor covering material 11 may be made of an adsorbent having a certain degree of flexibility which is a sheet-like member and having an adsorption performance of adsorbing on the upper surface of the sound insulation foundation material 12. For example, the cushioning material 11 d can be made of an acrylic resin foam made of an acrylic resin. By forming the cushioning material 11 d with an acrylic resin foam, innumerable fine holes are formed on the lower surface of the cushioning material 11 d. When the lower surface of the shock absorbing material 11d is pressed against the upper surface of the sound insulation foundation material 12 at the time of construction, the air in the innumerable minute holes is pushed out and the inside of the holes becomes negative pressure. An adsorption force is generated on the upper surface of the base material 12. With such a configuration, the lower surface of the cushioning material 11 d is configured as an adsorption surface that is adsorbed to the upper surface of the sound insulation foundation material 12.

    In the second embodiment, the cushioning material 11 d is made of an absorbent material with a non-woven fabric having a thickness of 3.5 mm. Specifically, the non-woven fabric attached adsorbing material is configured by integrally providing a thin non-woven fabric on the entire upper surface of an acrylic resin foam formed in a sheet shape. The non-woven fabric may have any function to absorb floor impact force acting on the upper surface of the interfloor material 10 and floor impact sound, and can be made of, for example, synthetic resin fibers such as polyester fiber and polyethylene fiber. When the cushioning material 11 d is formed of a flexible adsorbent, it is preferable to attach a protective sheet formed of a synthetic resin such as polypropylene to the lower surface of the cushioning material 11 d.

    According to such a configuration, when laying the floor finish 11 on the sound insulation foundation 12, the protective sheet on the lower surface of the floor finish 11 is removed, and the floor finish 11 is placed on the sound insulation foundation 12 and pressed. Even if it does not use an adhesive and does not fix it with a screw etc., it will be fixed so that it may not move on the sound insulation base material 12 by the adsorption | suction force of the buffer material 11d. Thus, the process of installing the interfloor material 10 can be reduced, so the interfloor material 10 can be easily applied.

<< Other Embodiments >>
In the first and second embodiments described above, the ceiling structure of the building to be built by the frame wall method (2 × 4 method) is described. However, the present invention is constructed by the frame method (wooden conventional method) or lightweight steel frame etc. It can be applied to the floor structure of a two-story building or more.

    Next, specific embodiments will be described.

(Example)
As an example, the floor structure of the embodiment shown in FIG. 1 and FIG. 2 was constructed between the levels of a two-story building of a frame wall method (2 × 4 method).

(Comparative example)
As a comparative example to the above embodiment, a structure in which the sound insulation base material 12 is removed from the floor structure of the embodiment shown in FIG. 1 and FIG. 2 between two levels of a building of a frame wall method (2 × 4 method). Was installed. That is, the interfloor material 10 was configured by laminating the floor finish 11 and the floor base material 13.

(Sound insulation performance)
Regarding the above example and comparative example, various living sounds (spoon falling sound, walking sound, cleaner head roller sound, chair dragging sound, toy (plarail) falling sound, wooden hammer falling sound) under the following measurement condition 1 The floor impact sound level (dB) was generated every octave band (125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz) at the receiving position. Measurement condition 1 is that the center of the room on the second floor is the sound source position, the center of the room on the first floor immediately below it is the sound receiving position, and the height position 2 m from the floor on the first floor is the sound receiving point height . Under the measurement condition 1, the results shown in FIG. 9 were obtained. In addition, a measurement result measures the maximum value 3 times, and is an average value of the measured value.

    With regard to the above embodiment and comparative example, as measurement condition 2, the floor impact sound level for each octave band is measured using the tapping machine as a sound source according to JIS A 1418-1 "Method for measuring floor impact sound blocking performance of building". The result is shown in FIG.

    As seen from this result, the floor impact sound level of the example is lower than the floor impact sound level of the comparative example for any of the sounds. From this, by providing the sound insulation foundation 12 between the floor finish 11 of the floor and the floor foundation 13 as in the floor construction of the present invention, it is possible to increase the time and effort of construction. It can be seen that the floor impact noise blocking performance can be significantly improved.

    [Industrial Applicability] The present invention is useful for a floor of a two-story or more building such as an apartment house.

10 floor flooring
11 floor finish
12 Sound insulation base material
12a Upper insulation board
12b Lower insulation board
12c cushioning material
13 Floor base material
A Upper projection
B lower protrusion

Claims (5)

A floor covering material, a sound insulation foundation material, and a floor foundation material, which are laminated in order from the top, and which are provided between building layers,
The sound insulation base material has two rectangular insulation boards laminated and fixed in a state of being shifted in the longitudinal direction and the lateral direction,
The floor covering material characterized in that the sound insulation foundation material has a shock absorbing material fixed to the lower surface of the lower insulation board of the two insulation boards. A floor covering material, a sound insulation foundation material, and a floor foundation material, which are laminated in order from the top, and which are provided between building layers,
The sound insulation base material has two rectangular insulation boards laminated and fixed in a state of being shifted in the longitudinal direction and the lateral direction,
Each of the above insulation boards is configured as a water repellent coated surface whose surface is coated with water repellent, while the back side is configured as a non-water repellent coated surface which is not water repellent coated,
In the above-mentioned sound insulation base material, the above-mentioned two insulation boards are characterized in that the above-mentioned back sides are adhered and fixed. In claim 2 ,
The floor covering material characterized in that the sound insulation foundation material has a shock absorbing material fixed to the lower surface of the lower insulation board of the two insulation boards. In any one of claims 1 to 3 ,
The above-mentioned sound insulation foundation material is the lower side of the other sound insulation foundation material in which the upper projecting portion where the above-mentioned upper insulation board protrudes from the above-mentioned lower insulation board is adjacent to the above upper projecting portion side of the above sound insulation foundation material. A joint floor material characterized in that an insulation board of the above is provided so as to overlap on a lower projecting portion which protrudes more than the upper insulation board. In claim 1 ,
A floor covering characterized in that the lower surface of the lower insulation board is formed of a water repellent coated surface coated with water repellent, and the buffer material is adhered by an adhesive.

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