JP6918478B2 - Soundproof floor structure - Google Patents

Description

The present invention relates to a soundproof floor structure having soundproofing performance against living sounds and the like.

In the floor structure described in Patent Document 1, the inner protrusions are projected from the facing surfaces at positions lower than the upper surfaces of the cross beams arranged in parallel with each other, and both ends of the ALC floor plate are supported on the upper surfaces of the respective inner protrusions. Each of the internal parts is vertically arranged so that the upper surface of the ALC floor plate in a state of being bridged between the cross beams is substantially flush with the upper surface of the cross beams, and is projected on the facing surface of each cross beam. .. The gap between the ALC floor plate and the cross beam is filled with a silicone sealing material.

Japanese Unexamined Patent Publication No. 11-93313

However, in the floor structure described in Patent Document 1, the silicone sealing material fills the gap between the ALC floor plate and the cross beam to close the gap and block the air propagating sound, but the silicone sealing material causes the sound. Since solid propagation occurs, it seems that sufficient soundproofing cannot be obtained.

In view of the above circumstances, it is an object of the present invention to provide a soundproof floor structure that suppresses solid propagation of sound on a building floor.

The soundproof floor structure of the present invention is a soundproof floor structure that suppresses the solid propagation of sound by the floor members of a building in order to solve the above-mentioned problems. Is filled with a sealing material having an elastic recovery rate of 60% or more and 95% or less.

With the above configuration, since the floor members are cut off from each other, for example, it is possible to suppress the sound generated at a certain location from propagating to the surroundings by solid propagation through the floor. Then, since the sealing material is filled in the edge-cut portion, the air propagation of the sound due to the gap is also suppressed. Further, since the elastic restoration rate of the sealing material is 95% or less, the solid propagation of sound by the sealing material is suppressed. That is, it is possible to prevent the suppression of solid sound propagation due to the bending and edge cutting by the sealing material as much as possible by setting the elastic restoration rate of the sealing material to 95% or less.

The elongation rate of the sealing material may be 550% or more. According to this, even if the position displacement occurs between the floor members, cracks and the like are unlikely to occur in the sealing material due to the elongation rate, and the floor member can be stably positioned. ..

The hardness of the sealing material may be 20 degrees or less. According to this, the solid propagation of sound by the sealing material can be further suppressed.

The floor member may be made of a wood-based material. Alternatively, the floor member may be made of lightweight foam concrete.

A specific area of the floor member may be trimmed from the floor member of the peripheral area located around the specific area, and a toilet bowl may be installed in the specific area.

According to the present invention, the solid propagation of sound is suppressed by cutting the edges between floor members, the air propagation of sound is suppressed by closing the gap due to the edge cutting with the sealing material, and the solid propagation of sound by the cutting is described above. Since the sealing material is not obstructed, the soundproofing performance of the building floor can be improved.

It is explanatory drawing which showed the toilet which has the soundproof floor structure which concerns on embodiment of this invention. It is explanatory drawing which showed the outline of the specific area where the toilet bowl of FIG. 1 was installed and the area around it three-dimensionally. It is explanatory drawing which showed the floor part forming a specific area of FIG. 2 turned upside down. It is explanatory drawing which showed the ALC floor which has the soundproof floor structure which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the soundproof floor structure of this embodiment is a soundproof floor structure that suppresses solid propagation of sound by the floor 1 of a building, and can be applied to, for example, a toilet 2 provided with a toilet bowl 2a.

The floor 1 is, for example, a first floor made of a wood-based material, and includes a first floor member 11 which is a specific area and a second floor member 12 which is a peripheral area located around the first floor member 11. Is separated and trimmed.

The toilet bowl 2a is installed on the first floor member 11. The pipe 2b in the toilet bowl 2a penetrates the first floor member 11 and is projected under the floor. Further, the partition wall 21 for partitioning the toilet 2 is installed on the second floor member 12.

As shown in FIGS. 2 and 3, the first floor member 11 is, for example, a square plate having a size of 600 mm square, and is supported by a floor bundle 3 provided on the underfloor side. Similarly, the second floor member 12 is also supported by the floor bundle 3. When the large pull 10 under the floor plate (see FIG. 1) is supported by the floor bundle 3, the large pull 10 is not passed from the first floor member 11 to the second floor member 12, but at the edge cutting portion. Divide it. In addition, in FIG. 2 and FIG. 3, the large drawing is omitted.

The edge cutting portion is filled with a sealing material 4 having an elastic recovery rate of 60% or more and 95% or less (preferably 60% or more and 90% or less). The value of the elastic recovery rate shall be based on JIS A5758 (G-30SLM). Further, as the sealing material 4, a material made of a one-component room temperature curing type oxime type silicone sealant, an organic elastic sealing material, or the like can be used.

Further, the sealing material 4 has an elongation rate of 550% or more. The above growth rate value shall be based on JIS A5758.

The hardness (JIS type A) of the sealing material 4 is 20 degrees or less. The hardness value is based on JIS K6249.

In the above configuration, the first and second floor members 11 and 12 are cut off from each other. Therefore, for example, the sound generated at the location of the first floor member 11 is surrounded by solid propagation through the floor. It can be suppressed from propagating to. Then, since the sealing material 4 is filled in the edge-cut portion, the air propagation of the sound due to the gap is also suppressed. Further, since the elastic restoration rate of the sealing material 4 is 95% or less, the solid propagation of sound by the sealing material 4 is suppressed. That is, it is possible to prevent the suppression of solid sound propagation of sound due to bending and edge cutting by the sealing material as much as possible by having the sealing material 4 having an elastic restoration rate of 95% or less. Of course, by setting the elastic restoration rate of the sealing material 4 to 90% or less, the solid propagation of sound at the edge cutting portion can be further suppressed.

When the elongation rate of the sealing material 4 is 550% or more, even if the position displacement occurs between the first and second floor members 11 and 12, the sealing material 4 cracks due to the elongation rate. Etc. are less likely to occur, and the first floor member 11 can be stably positioned.

When the hardness of the sealing material 4 is 20 degrees or less, the solid propagation of sound by the sealing material 4 can be further suppressed.

The sound insulation performance of the toilet 2 configured as shown in FIG. 1 was measured by the vibration acceleration level. Specifically, the vibration pickup was set on the second floor member 12 which is the outside of the toilet 2, and the water extruded from the washing bottle was dropped into the pooled water in the toilet bowl 2a. When water is dropped into the toilet bowl 2a, a sound centered on a frequency of approximately 500 Hz, which is equivalent to the sound generated during the act of urinating, is generated. Water was dropped for 10 seconds, and the average value of the vibration acceleration level during that period was examined. There is a correlation between the vibration acceleration level and the sound pressure, and it can be said that the higher the vibration acceleration level, the higher the sound pressure.

In the above measurement, as the sealing material 4, a one-component room temperature curing type oxime type silicone sealant having an elastic recovery rate (G-30SLM) of 90, an elongation rate of 550%, and a hardness of 18 degrees was used. Further, as the sealing material A for comparison, an oxime-type silicon sealant of a one-component room temperature curing type having an elastic restoration rate of 97, an elongation rate of 480%, and a hardness of 32 degrees was used, and the sealing material B for comparison was elastic. An oxime-type silicon sealant of a one-component room temperature curing type having a restoration rate of 99, an elongation rate of 658%, and a hardness of 12 degrees was used.

Here, when the edge was cut, the sound pressure level was reduced by about 5 decibels as compared with the case where the edge was not cut. However, in the above measurement, the sound pressure level when the comparative sealing material A and the comparative sealing material B were used was the same as when the edge was not cut. On the other hand, the sound pressure level when the sealing material 4 was used was about 5 decibels smaller than that in the case where the edge was not cut. As described above, by using the sealing material 4, it was possible to prevent the suppression of the solid propagation of the sound due to the folding and edge cutting from being hindered by the sealing material as much as possible.

Next, the floor structure of another embodiment will be described. As shown in FIG. 4, the first floor member 61 and the second floor member 62 constituting the floor 6 of the building are placed on the upper flange of the H steel beam 63 with a gap, and each of them is a fixing bracket. It is fixed to the upper flange of the H steel beam 63 by 64. That is, the first floor member 61 and the second floor member 62 are fixed to the H steel beam 63 in a state of being cut off and separated from each other. The first floor member 61 and the second floor member 62 are made of, for example, lightweight foam concrete (ALC). Further, a plate-shaped anti-vibration rubber 65 is provided between the first floor member 61 and the second floor member 62 and the H steel beam 63. Further, a floor finishing material 66 is laid on the first floor member 61 and the second floor member 62. The floor member may be precast concrete, cast concrete, or the like, in addition to wood and ALC.

It should be noted that a gap may be formed in all of the floor members (ALC, etc.) constituting the floor 6 on one floor of the building, or a gap may be provided between a group of floor members constituting a certain room. Instead, the floor materials may be brought into contact with each other so that a gap is provided only between the floor members constituting the space (room, corridor, etc.) next to the certain room. Of course, such a gap is set to a width that allows sealing.

Then, the sealing material 4 is filled in the gap (edge cutting portion). By adopting a floor structure having such a structure, it is possible to suppress the sound generated at a certain floor member from propagating to another floor member by solid propagation. Since the elastic restoration rate of the sealing material 4 is 95% or less, the solid propagation of sound by the sealing material 4 is suppressed. That is, it was possible to prevent the suppression of solid sound propagation of sound due to bending and edge cutting by the sealing material as much as possible by having the sealing material 4 having an elastic restoration rate of 95% or less.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. Various modifications and modifications can be made to the illustrated embodiment within the same range as the present invention or within the same range.

1: Floor 10: Large pull 11: First floor member 12: Second floor member 2: Toilet 2a: Toilet bowl 2b: Piping 21: Partition wall 3: Floor bundle 4: Sealing material 6: Floor 61: First floor member 62 : Second floor member 63: H-beam 64: Fixing bracket 65: Anti-vibration rubber 66: Floor finishing material

Claims (4)

A sound-insulating floor structure suppresses the solid-borne sound by floor member of a building, the elastic restoring the floor members to each other are edge cutting, which is defined only in JISA5758 (G-30SLM) on the upper side of the edge cutting has been places A soundproof floor structure characterized by being filled with a sealing material having a ratio of 60% or more and 90% or less. The soundproof floor structure according to claim 1 , wherein the floor member is made of a wood-based material. The soundproof floor structure according to claim 1 or 2 , wherein the floor member is made of lightweight foam concrete. In the soundproof floor structure according to any one of claims 1 to 3 , the toilet area of the floor member on which the toilet bowl is installed and becomes a sound generation source is the floor of the surrounding area located around the toilet area. sound-insulating floor structure characterized in that it is edge cutting from member.

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