JPH0610489U - Soundproof double floor structure - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Floor base material through a plurality of supports on the floor base such as concrete floor slab surface, ALC constructed on steel frame or joist, plywood, particle board, etc. The double-floor soundproof structure that allows the wiring and wiring to be installed on the floor base can be freely installed on the floor base, providing a double-floor structure with excellent soundproofing performance and comfort. To do. [Structure] A double floor provided with a plurality of joist supports 1 arranged on the floor base 8 and a joist set 4 arranged thereon in order to provide a space in consideration of providing pipes and the like on the floor base 8. The construction is a soundproof double floor structure in which the joist support 1 has 21 or more non-woven fabric layers using the same or different crimped fibers and 31 or more high-rigidity layers of the same or different types.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a soundproof double-floor structure, more specifically, a floor base through a plurality of supports on a floor base such as a concrete floor slab surface, an ALC constructed on a steel frame or joist, plywood, particle board, etc. This relates to a double-floor soundproof structure that allows piping and wiring where materials are placed.

[0002]

[Prior art]

 The double-floor structure is mainly used for floors of middle- and high-rise buildings and condominiums, etc. Underfloor ground materials are arranged by multiple supports on a floor base consisting of concrete floor slab surface, ALC floor surface, etc. A space is formed in the. This space has the advantage that it can be used as a space for electrical wiring and water supply piping, and that construction of these can be done easily.

As a support for the above-mentioned floor base material, a metal leg or a resin leg having a screw structure so that the height can be adjusted has already been put on the market, and a rubber tip or the like is added to impart soundproof performance. It is common to provide a vibration absorber. On the other hand, apart from these, there is also a method in which a foamed resin plate is laid under the floor base material over the entire surface of the floor base, and notches are made only in the parts that require piping.

[0004]

[Problems to be solved by the device]

 However, the double floor using the metal legs or the resin legs uses a rubber or the like having an extremely low hardness as the vibration absorber in order to obtain soundproofing performance, and therefore the floor must be finished soft. As a result, there is a problem with habitability, such as when the person feels like the floor sinks when they walk. Further, in the method using the foamed resin plate, although the habitability is solved to some extent, there is a problem that sufficient soundproof performance cannot be obtained.

Conventionally, a double-floor structure having no soundproof performance has been a system in which joists are laid on the floor base and the floor is finished on the floor. Even if there is some unevenness in the floor base, the floor with the joist can be adjusted so that the floor finish surface is horizontal by using spacers when the joist is assembled, and the feeling of walking on the finished floor is extremely high. It was good for me.

Therefore, the object of the present invention is that it is possible to freely install wiring and piping on the floor base, which is excellent in workability and soundproofing, and is also excellent in habitability. It is to provide a floor structure.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the inventors of the present invention have conducted extensive studies on a double floor, and as a joist support, a layer 1 made of a material having the same or different kind of high rigidity from a layer made of a specific nonwoven fabric We have found a double-floor structure that provides an excellent walking feeling as a flooring material and has an excellent effect of improving the soundproofing performance by providing a material having more than one layer and laying a joist on it.

[0008] That is, the present invention is a double layer including a joist support arranged in plural on the floor base and a joist set placed thereon in order to provide a space in consideration of providing piping or the like on the floor base. A soundproof double floor structure having a floor structure, in which the joists have one or more non-woven fabric layers using the same or different crimped fibers and one or more high-rigidity layers of the same or different types. Is.

Hereinafter, the present invention will be described in detail. The soundproof double-floor structure of the present invention comprises a structure in which a joist is assembled on a joist support having a specific non-woven fabric on the floor base and then the floor is finished. In the soundproof double floor structure of the present invention, the floor impact sound can be reduced by laying a specific joist support, so it is used as a finishing material for improving the conventional lightweight floor impact sound as a floor surface finishing material. It is worth noting that can be used even though it has been said to be very difficult to use. For example, wood flooring materials such as single-layer flooring and composite flooring, stone flooring materials, and inorganic flooring materials such as ceramic tiles can be used. Of course, it does not prevent the use of a finishing material such as carpet, tatami mat, cork, linoleum, etc., which has a light weight floor impact noise improving performance. When using these floor finishing materials, those that can be directly fixed to joists such as flooring can be fixed as they are, and for those that require a floor underboard such as carpet, fix the floor underboard to joists. You can When it is necessary to partially reinforce the floor, it is possible to increase the number of joists or the number of joist supports only in that part. From this point of view, the structure of the present invention enables the use of floor materials and the floor design with a high degree of freedom.

The joist support of the present invention is composed of a plurality of layers, and it is essential that at least one layer is a nonwoven fabric using crimped fibers. As such a fiber, there is a latent crimp type fiber which is a single fiber obtained by simultaneously spinning two kinds of resins having different thermal characteristics such as polyester or polypropylene, and laminating the fibers by heat treatment. The shrinkage is remarkable. Generally, a non-woven fabric made of latently crimped fibers and crimped by heat treatment is put on the market. In the present invention, it is desirable to use a non-woven cloth containing 40% or more of the fibers. If it is less than 40%, it becomes difficult to obtain the desired soundproofing performance. The non-woven fabric not only has appropriate elasticity to absorb impact vibrations, but also absorbs impacts by converting impact energy into heat energy by friction between fibers. The thickness of the layer made of the non-woven fabric is preferably 3 mm or more and 50 mm or less, and more preferably 5 mm or more and 20 mm or less, in consideration of soundproofing performance and habitability such as walking feeling. If the thickness is less than 3 mm, the desired soundproofing performance cannot be obtained, and if it exceeds 50 mm, the living performance and floor strength will be affected even if the material of the nonwoven fabric is taken into consideration. The shape of the non-woven fabric is not particularly specified, starting with a flat shape, looped napped like a carpet, raised one by one, irregularly shaped, corrugated shape A variety of shapes such as a broken one are used.

The other joist support constituent parts support the floor surface finishing material laid on the support, the floor load and joists, and are not locally deformed in order to evenly distribute the load applied to the nonwoven fabric. As long as it has the rigidity and thickness described above, various materials such as plywood, particle board, metal plate, and noncombustible lightweight composite plate (for example, those disclosed in Japanese Patent Publication No. 56-40116) can be appropriately selected. However, even if it has a certain rigidity, it is not suitable to be destroyed by the impact on the floor.

The height of the joist support is preferably 20 mm or more and 250 mm or less and 40 mm or more and 150 mm or less, considering that pipes may be passed through the underfloor space. May be laminated at an appropriate position. In addition, the joist support is preferably 80 mm or more in both length and width for the purpose of holding the load applied to the floor, stabilizing the joists without hindering piping, and reducing the ground contact area with the floor base. Good to do. If the size of the support is too small, a concentrated load is applied to the non-woven fabric and it is difficult to stabilize and fix the joists, which is not preferable.

The joist support may be laid on the floor base as long as the joists can be stably fixed without causing excessive bending and impairing the feeling of walking or reducing the strength of the floor. It is not necessary to lay it over the entire surface, and a range of 7% to 50% of the floor area is sufficient.

For the joist assembly assembled on the joist support, a conventional method using wood, steel or the like is used. For example, lumber with a 45 mm square cross section is assembled on a joist support at intervals of 300 mm to 450 mm, and a floor surface finishing material is laid on it. What must be taken into consideration here is that when fixing the joists to the joist support, the joists are fixed so that the load is distributed over the entire surface of the support so that an unbalanced load is not applied. Fixing the joists so that an unbalanced load is applied to the joist supports not only hinders the effect of the present invention, but also hinders the safety of the entire floor. Also, if the floor base is not horizontal, it may be possible to add an adjusting material between the joist support and joists so that the floor can be leveled.

In the present invention, a sound absorbing material such as glass wool or rock wool can be placed in a space formed between the supports as one means for enhancing the soundproofing performance. Placing a sound absorbing material is one of the effective means that does not impair the feeling of walking because it is possible to enhance the soundproofing performance without changing the strength of the entire support.

An embodiment of the present invention is shown in FIGS. 1 to 4 are cross-sectional views of the joist support, joists and surface finishing material on the floor base, and FIGS. 5 and 6 are plan views in which the floor surface finishing material is omitted. FIG. 7 is a partially cutaway perspective view of the joist support arrangement of FIG. 5 in the sectional configuration of FIG. In these figures, 1 is a joist support, 2 is a non-woven fabric using latent crimped fibers, 3 is a material having high rigidity (rigid body), 4 is joist, 5 is a floor base material, 6 is a sound absorbing material, and 7 is Surface finishing material, 8 is a floor base, and 9 is underfloor piping. FIG. 1 is a cross-sectional view of a joist 4 and a surface finishing material 7 on a joist support 1 on a floor base. The joist support 1 is a non-woven fabric 2 using crimped fibers and has a high rigidity ( Rigid body 3 is laminated. FIG. 2 is a sectional view similar to FIG. 1, but the joist support 1 is formed by laminating a nonwoven fabric 2 using crimped fibers between rigid bodies 3 and 3. FIG. 3 is a sectional configuration diagram similar to FIG. 2, except that the joist support 1 is formed by laminating nonwoven fabrics 2 and 2 using crimped fibers sandwiched between rigid bodies 3, 3 and 3. A surface finishing material is laid on the joists with a floor base material. In the present invention, when there are two or more non-woven fabric layers, one layer must be composed of a non-woven fabric using crimp type fibers, but the other layer does not necessarily include crimp type fibers. It may be a non-woven fabric. FIG. 4 shows that in the structure of FIG. 2, the sound absorbing material 6 is arranged around the support. 5 and 6 show an example of the arrangement of joists and joist supports and an example of the pipe 9 passing between the supports. FIG. 7 is a partially cutaway perspective view for explaining the usage mode when the joist support arrangement of FIG. 5 is performed in the sectional configuration of FIG. It is needless to say that these illustrated modes are merely examples, and the modes can be changed in various ways within the scope of the present invention without sticking to these figures.

[0017]

[Operation] In the soundproof double floor structure of the present invention, the specific non-woven fabric constituting the joist support does not directly transmit the floor impact sound to the floor base, and in particular, the ground contact area between the support and the floor base is kept below a certain level. In addition to reducing the floor impact sound, the components of the double floor structure, such as the floor material and the support, are less likely to resonate with the floor base in response to floor impact sounds of various frequencies. Therefore, it is considered that the floor impact noise can be effectively reduced.

[0018]

【Example】

Comparative examples and examples of the present invention will be described below. (Example 1) The floor structure of the present invention was constructed on a concrete floor slab surface of 150 mm. The surface finishing material was a color floor with a thickness of 12 mm, the floor base material was a particle board with a thickness of 20 mm, and joists with a cross section of 40 mm x 50 mm were arranged at a core-to-core distance of 450 mm. The rigid body layer of the joist support is composed of two layers of 15 mm plywood and 20 mm particle board, and the non-woven fabric layer is composed of non-woven fabric using latent crimped fibers of polyester with a thickness of 10 mm. The support is 150 mm wide and the support is The spacing between the cores was 900 mm in terms of the distance between the cores. In addition, 10 kg / m ³ of glass wool having a thickness of 50 mm was placed between the joists.

Comparative Example 1 A non-woven fabric was not used as a support, and all other conditions were the same as in Example 1.

(Comparative Example 2) A non-woven fabric using ordinary fibers that are not latently crimped in the support was used, and all other conditions were the same as in Example 1.

Example 2 A floor base material was not used, and a joist material interval was set to 300 mm in terms of core-to-core distance, and all other conditions were the same as in Example 1. Table 1 below shows the results of measuring the floor impact sound with a tapping machine in accordance with JIS A1418 "Measuring method for floor impact sound level at building site" by constructing floor materials with the above combinations.

[0022]

[Table 1] ─────────────────── Sound insulation grade ─────────────────── Example 1 L49 ── ───────────────── Comparative Example 1 L70 ─────────────────── Comparative Example 2 L54 ────── ───────────── Example 2 L50 ────────────────────

As is clear from these results, the floor impact sound level of the example is significantly lower than that of the comparative example. The examples were also good in walking sensation.

[0024]

[Effect of device]

 As described above, according to the soundproof double floor structure of the present invention, the floor is provided through the plurality of joist supports having the specific nonwoven fabric layer and the rigid layer, so that a good walking feeling can be maintained. , The soundproofing performance can be remarkably enhanced. In addition, since such a specific support can reduce floor impact noise, it is possible to use materials with poor soundproofing properties that could not be used as floor surface finishing materials in the past, and it is possible to achieve floor finishing according to needs. In addition to being able to lay the floor finishing material directly on the joists, it is also possible to lay it through the floor base material. From this point, not only the material but also any surface finishing material can be used. In addition, the floor surface is integrated by the joisting to provide a structure with high rigidity, so that the soundproofing performance can be improved without further impairing the walking feeling.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a joist support, joist and surface finishing material on a floor base of a soundproof double floor structure of the present invention.

FIG. 2 is a cross-sectional configuration diagram of a joist support, joist and surface finish on the floor base of the soundproof double floor structure of the present invention.

FIG. 3 is a cross-sectional configuration diagram of a joist support, joist and surface finishing material on the floor base of the soundproof double floor structure of the present invention.

FIG. 4 is a cross-sectional configuration diagram of a joist support, joist and surface finishing material, and sound absorbing material on the floor base of the soundproof double floor structure of the present invention.

FIG. 5 shows an example of the arrangement of joists and joist supports below the joists for the soundproof double floor structure of the present invention.

FIG. 6 shows an example of the arrangement of joists and joist supports below the joists for the soundproof double floor structure of the present invention.

FIG. 7 is a partially cutaway perspective view for explaining the usage mode when the joist support arrangement of FIG. 6 is performed in the sectional configuration of FIG.

[Explanation of symbols]

 1 joist support 2 non-woven fabric using crimped fiber 3 rigid body 4 joist 5 floor base material 6 sound absorbing material 7 surface finishing material 8 floor base 9 underfloor piping

Claims (1)

[Scope of utility model registration request] 1. A double floor structure comprising a plurality of joist supports arranged on the floor base and a joist set arranged thereon in order to provide a space in consideration of providing piping or the like on the floor base. There is a high-rigidity layer 1 of which the joist support is of the same type or different type as one or more non-woven fabric layers using the same type or different types of crimped fibers.
A soundproof double floor structure having at least one layer.