JP2009074311A - Double floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor preceding type double floor structure having simple construction for preventing the propagation of sounds between rooms partitioned from each other with a wall member. <P>SOLUTION: A floor panel 12 is placed on a foundation floor 11 via a plurality of supporting legs 13. The wall member 10 for partitioning adjacent rooms 1, 4 from each other is installed on the floor panel 12. Between the floor panel 12 and the foundation floor 11 at the lower position of the wall member 10, a partition wall 42 is provided in parallel to the planar direction of the wall member 10, which consists of sound absorbing materials 41 built up with one another to partition a space therebetween. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double floor structure in which a floor panel is supported on a foundation floor such as a concrete slab through support legs, and a floor-preceding type in which a wall member is installed on the floor panel after laying the floor panel. Concerning double floor structure.

  In recent years, a double floor structure has been adopted in many buildings such as apartment buildings and office buildings, and a space is formed between the concrete slab and the floor panel to improve sound insulation. In the space portion, wiring for electric / communication can be provided.

  As this type of double floor, there are structures using the support legs described in Patent Document 1 and Patent Document 2. In this double floor, support legs are arranged on a concrete slab, and a floor panel is arranged thereon, thereby forming a space between the concrete slab and the floor panel. In addition, the double floor described in Patent Document 2 has a so-called floor advance type structure in which a wall member is installed on a floor panel.

In such a double floor structure, sound insulation is ensured by separating the floor panel and the concrete slab by the space portion, and the base of the support leg supporting the floor panel is made of elastic material such as rubber. Even if an object is dropped on the floor using a member, the impact sound is hardly transmitted to the concrete slab via the support leg.
JP-A-5-321443 Japanese Patent Laid-Open No. 2004-257059

  By the way, in the floor-preceding type double floor structure shown in Patent Document 2, the room above the floor panel is partitioned by the wall member, but the space below the floor panel is the lower position of each room. Since the spaces in the room are in communication with each other, the sound in the adjacent room may propagate through the space between the double floors.

  In order to block this, it is conceivable to seal between the floor panel and the concrete slab with plywood or the like, but the construction is troublesome.

  The present invention has been proposed in view of the above circumstances, and in a floor-preceding type double floor structure, sound propagation through a double floor between rooms partitioned by wall members has a simple structure. The object is to provide a double floor structure that can be prevented.

  In order to achieve the above object, in the present invention, a floor panel is laid on a foundation floor such as a concrete slab via a plurality of support legs, and a wall that partitions adjacent rooms on the floor panel. A partition wall formed by stacking sound absorbing materials so as to partition the space between the floor panel and the foundation floor at a position below the wall member is provided in parallel with the surface direction of the wall member. It is characterized by being.

  That is, the space between the floor panel and the foundation floor is partitioned by the partition wall of the sound absorbing material, and the partition wall is configured by stacking of the sound absorbing material. Therefore, when a floor panel is laid on the foundation floor, it can be constructed by a simple construction in which sound absorbing materials are stacked in a vertical direction so as to fill the space between them to form a partition wall.

  And by arranging this partition wall in parallel with the surface direction of the wall member on the floor panel, the space between the floor panel and the foundation floor is blocked, and the sound propagating through the space is separated by the partition wall. Can be absorbed.

  Further, in the double floor structure of the present invention, the support legs are arranged along the surface direction of the wall member immediately below the vertical direction of the wall member, and the partition wall of the sound absorbing material is an array of these support legs. It is arrange | positioned at least any one side of these.

  In this floor-preceding double floor structure, the weight of the wall member installed on the floor panel is directly supported by the support legs, and the structure is excellent in strength. In this case, a partition wall is provided along the row of support legs directly below the wall member, and the propagation of sound to the adjacent room via the space between the double floors is reduced. Of course, the partition walls of the sound absorbing material may be arranged on both sides of the row of support legs to further enhance the sound insulation.

  In the double floor structure of the present invention, the sound absorbing material is configured to include glass wool.

  Glass wool is a cotton-like material made of glass fiber, and has a function of sound absorption and heat insulation by trapping air in the gaps between the complicated glass fibers. In general, glass wool is covered with a film to form a plate or roll, which is easy to handle. The partition wall can be easily constructed by stacking the glass wool sound absorbing material between the floor panel and the foundation floor, and the glass wool can exhibit excellent sound absorbing properties.

  According to the double floor structure of the present invention, the space between the floor panel and the foundation floor can be blocked by the partition wall of the sound absorbing material, and the sound propagating through the space can be absorbed by the partition wall. And when laying a floor panel on a foundation floor, it can construct | assemble by the simple construction of stacking a sound-absorbing material up and down so that it may fill between these, and making it a partition wall.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view to which a double floor according to an embodiment is applied, and is a model room constructed in order to perform an effect confirmation test described later. In FIG. 1, reference numeral 1 is a bathroom, reference numeral 2 is a toilet, reference numeral 3 is a washing room, reference numeral 4 is a living room, reference numeral 5 is a unit bath having a bathtub, reference numeral 6 is a toilet, and reference numeral 7 is a washing machine. It is bread. The rooms 1 to 4 are partitioned by wall members 8 to 10, and the bathroom 1, the toilet 2, and the laundry room 3 are arranged in a line as shown in FIG. All of -3 are arranged adjacent to the living room 4.

  The unit bath 5 of the bathroom 1 is directly installed on the concrete slab 11 as a foundation floor. However, the toilet 2, the laundry room 3, and the living room 4 have a double floor structure. 6 and the washing machine pan 7 of the laundry room 3 are installed on a floor panel 12 having a double floor structure.

A plurality of floor panels 12 are arranged along the floor surface, and each floor panel 12 is supported on a concrete slab 11 by a plurality of support legs 13.
As shown in FIG. 4, each support leg 13 is formed at the center portion with a truncated cone-shaped base 21, support bolts 22 fitted to the base 21 and supported upright on the base 21. It is comprised from the block-shaped floor panel receptacle 25 comprised by fixing the internal thread member 24 to the through-hole 23 which is formed.

  The pedestal 21 is made of an elastic member such as hard rubber, and the lower end portion 22a of the support bolt 22 is rotatably fitted in the center thereof.

The shaft portion 22b of the support bolt 22 is formed with a male screw over substantially the entire length excluding its lower end portion 22a, and a tool insertion groove 26 into which a Phillips screwdriver or the like can be inserted is formed on the upper end surface of the shaft portion 22b. ing.
The floor panel receiver 25 includes a square particle board block 27 having a through hole 23 formed in the center, a female screw member 24 that is integrally fixed to the through hole 23 and to which a support bolt 22 is screwed, and a particle board. The adhesive tape 28 is bonded to the upper surface of the block 27.
The female screw member 24 has a flange portion 24a formed at the center in the length direction thereof, an internal thread formed on the inner peripheral surface thereof, and the flange portion 24a is connected to the lower surface side of the floor panel receiver 25 (the surface to which the adhesive tape 28 is attached). The particle board block 27 is integrally fixed to the particle board block 27 in an exposed state on the opposite side.
In the support leg 13, the height of the particle board block 27 fixed to the female screw member 24, in other words, the floor, by rotating the support bolt 22 and moving the female screw member 24 up and down along the support bolt 22. The height of the panel receiver 25 is adjusted, whereby the distance between the floor panel 12 placed on the floor panel receiver 25 and the concrete slab 11 is adjusted.

  Moreover, the floor panel 12 is comprised from the particle board 31 and the flooring material 32 which is a surface floor board arrange | positioned on it. The particle board 31 is made of wood chips obtained from waste materials or the like, which are hardened with an adhesive. The flooring material 32 is disposed using the particle board 31 as a base material.

  On the other hand, the wall members 8 to 10 are obtained by attaching and fixing a gypsum board 36 to one side or both sides of a core member 35 made of a steel frame. A baseboard 37 having 37a is stretched.

  In the case of this embodiment, as described above, the bathroom 1, the toilet 2, and the laundry room 3 are arranged side by side, and are adjacent to the living room 4 via the single wall member 10. The wall member 8 between the bathroom 1 and the toilet 2, the wall member 9 between the toilet 2 and the laundry room 3, and the bathroom 1, the toilet 2, the laundry room 3 and the living room 4 are partitioned. The wall members 10 are respectively installed on the floor panel 12, and the plurality of support legs 13 among the support legs 13 below the floor panel 12 are directly below the wall members 8 to 10 in the vertical direction. It arrange | positions and it is located in a line along the surface direction of each wall member 8-10. In other words, the wall members 8 to 10 are supported by the plurality of support legs 12 from below.

  In this case, in the room of the toilet room 2, the washing machine room 3, and the living room 4, the support legs 13 are arranged between the floor panels 12 arranged in a plane, and the support bolts are provided in the gaps between the adjacent floor panels 12. 22 heads can be seen. On the other hand, among the support legs 13 arranged immediately below the wall members 8 to 10, the support legs 13 arranged in the middle part of the surface of the floor panel 12 are through holes 38 formed in the particle board 31 of the floor panel 12. Further, the head of the support bolt 22 is arranged in the inserted state. Accordingly, a tool is inserted from above the floor panel 12 into the gap between the floor panels 12 or the tool insertion groove 26 at the head of the support bolt 22 exposed in the through hole 38 of the floor panel 12 to thereby remove the floor panel 12. The height can be adjusted.

  Moreover, the lower position of wall member 8-10 which divides between bathroom 1, toilet 2, laundry room 3, and living room 4, More specifically, floor panel 12 of the position near wall member 10 in living room 4 is shown. In the lower position, a partition wall 42 made of a sound absorbing material 41 is provided so as to be arranged in a row of support legs 13 that support the wall member 10.

The sound absorbing material 41 is made of glass wool.
This glass wool is a cotton-like material made of glass fiber, and is obtained by forming molten glass into a cotton-like shape by a centrifugal method or the like, and adding an adhesive thereto to shape it into a plate-like shape, a roll-like shape or the like. The surface of glass wool is covered with a resin film deposited with aluminum.
A plurality of the glass wool sound absorbing materials 41 are stacked in a space between the floor panel 12 and the concrete slab 11 to constitute a partition wall 42.
In such a double-floor structure, the bathroom 1, the toilet 2, and the laundry room 3 are places where daily noise and vibration are generated, but wall members that partition between the rooms 1 to 3 and the living room 4 10, the partition wall 42 of the sound absorbing material 41 is provided so as to fill the space between the floor panel 12 supported by the support legs 13 and the concrete slab 11. Propagation of noise and vibration to the room 4 can be reduced.

The sound absorbing material 41 used for the partition wall 42 in this double floor structure is made of glass wool, and air is confined in a gap between glass fibers entangled in the glass wool. Sound is absorbed while passing through the complex interlaced glass wool fibers.
In order to confirm the sound insulation effect of the double floor structure using the sound absorbing material 41, various living noises were generated in the bathroom 1, the toilet 2, and the laundry room 3, and the propagation of sound to the living room 4 was measured. . For example, in the bathroom 1, a handrail is dropped from a predetermined height, the floor surface is dragged while a figure of 8 is drawn on the stool, a flush water is flushed in the toilet 2, and a golf ball is moved from the predetermined height in the laundry room 3. Living noise was generated by dropping it. And the sound pressure of the sound generated in each of the rooms 1 to 3 and the propagation sound at the center of the living room 4 and a position away from the wall member 10 by a predetermined distance was measured.
As a comparison object, a floor-advanced double floor structure with no sound absorbing material and a wall-advanced structure, that is, a wall member erected directly on a concrete slab, and the floor panel is A divided structure was used.

The wall-advanced structure has an excellent sound insulation effect because the space between the rooms is blocked by the wall member from above the concrete slab. In the case of this embodiment, compared to this wall-advanced structure, most living sounds were measured as 3-4 dB louder. Compared to a floor-preceding structure that does not use a sound-absorbing material, the structure of this embodiment may be slightly larger, but the sound is generally reduced by about 2 to 9 dB.
From this experimental result, it was confirmed that the structure of the present embodiment has substantially the same sound insulation as the wall-preceding structure.
As described above, in this double floor structure, the space between the floor panel 12 and the concrete slab 11 is partitioned by the partition wall 42 by the sound absorbing material 41 in the same manner as the partition by the wall member 10 on the floor panel 12. Therefore, it has a sound insulation equivalent to that of the wall-advanced type structure while being a floor-advanced type double floor. Moreover, since the sound absorbing material 41 is simply stacked between the floor panel 12 of the double floor and the concrete slab 11 to form the partition wall 42, the partition wall 42 of the sound absorbing material 41 is used when constructing the double floor. Can be installed easily and workability is good.

  In the above-described embodiment, the partition wall of the sound absorbing material is provided only on one side of the row of the support legs that support the wall member, specifically, at a lower position near the wall member in the living room. You may make it provide the partition wall of a sound absorption material in the both sides of a row | line | column.

  Further, although glass wool is used as the sound absorbing material, application of rock wool, non-woven cotton or the like is not excluded.

It is a top view of the floor which shows one Embodiment of the double floor structure of this invention. It is a longitudinal cross-sectional view of the double floor structure which is supporting the wall member between the bathroom of FIG. 1, and a living room. It is a longitudinal cross-sectional view of the double floor structure which is supporting the wall member between the toilet or the laundry room of FIG. 1, and a living room. It is a front view of the support leg used in this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom 2 Toilet 3 Laundry room 4 Living room 8-10 Wall member 11 Concrete slab (foundation floor)
12 Floor panel 13 Support leg 21 Base 22 Support bolt 24 Female thread member 25 Floor panel receiver 31 Particle board 32 Flooring material 41 Sound absorbing material 42 Partition wall

Claims (3)

  A floor panel is laid on the foundation floor via a plurality of support legs, and a wall member for partitioning between adjacent rooms is installed on the floor panel, and the floor panel and the foundation at a position below the wall member are installed. A double floor structure in which a partition wall formed by stacking sound absorbing materials so as to partition a space between the floor and the floor is provided in parallel to the surface direction of the wall member.   The support legs are arranged along the surface direction of the wall member directly below the vertical direction of the wall member, and the partition wall of the sound absorbing material is disposed on at least one of the left and right sides of the row of the support legs. The double floor structure according to claim 1, wherein the double floor structure is formed.   3. The double floor structure according to claim 1, wherein the sound absorbing material is configured to include glass wool.

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