JP2015010346A - Soundproof floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof floor structure capable of establishing compatibility between soundproof performance and walk feeling on a floor.SOLUTION: Intersection parts, each of which is between a beam 1 and a binder 2 arranged so as to connect between the beams 1, are formed at a predetermined pitch (1000 mm), an elastic support spacer 4 is arranged at a position of each intersection part on a double underfloor side plate 3 arranged so as to cover the beam 1 and the binder 2, the elastic support spacers 4 are arranged also at positions other than the intersection parts at a half pitch (500 mm) of the predetermined pitch, and a double floor side plate 5 so as to cover the elastic support spacers 4 to form a space.

Description

  The present invention relates to a soundproof floor structure suitable for a wooden frame building.

  Patent Document 1 discloses a double floor structure. The double floor structure includes a double floor support leg disposed on the floor frame, a rectangular wooden panel laid over the upper surface of the double floor support leg, and laid on the rectangular wooden panel. The floor support material is composed of a floor base material and a floor finish material, and the double floor support leg is formed by stacking three square plate pieces made of a wood material to form a rectangular parallelepiped support block, and the bottom layer of the support block is Shock absorbers are provided to project at the four exposed corners of the rectangular plate piece, and the shock absorbers are in contact with the upper surface of the hard gypsum board constituting the upper floor frame. Located on the upper floor.

  Patent Document 2 discloses a support leg used for a floor foundation structure, which is solid and substantially columnar, but has a main body in which at least one annular recess is formed on a side surface thereof, and upward from the main body. There is disclosed a support leg having a projecting portion having a substantially cylindrical shape that projects and at least a main body is formed of an elastic material.

  Patent Document 3 includes a lower floor surface by a base plate laid on the upper surface of a floor beam, a plurality of joist members arranged at intervals, and a floor base plate laid on the upper surface of the joist member. There is disclosed a soundproof floor structure for a wooden house, which is constituted by an upper floor surface independent of the lower floor surface and a spacer material and a sound absorbing material arranged between the floor surfaces.

  Patent Document 4 discloses a lower base plate laid on the upper surface of the floor beam, a buffer material laid on the upper surface of the lower base plate, an upper base plate laid on the upper surface of the buffer material, A plurality of joist members arranged at intervals on the upper surface of the base plate, a mass layer composed of heavy objects arranged at the interval portions of the joist members, and a mass layer laid on the upper surface of the joist member and covering the mass layer A sound insulation floor structure constituted by a floor base plate is disclosed.

JP 2011-256531 A JP 2009-209670 A JP-A-2005-290913 JP 2003-293571 A

  However, these conventional soundproof floor structures cannot achieve both soundproof performance and a feeling of walking on the floor.

  This invention makes it a subject to provide the soundproof floor structure which can make soundproof performance and the feeling of walking on a floor compatible in view of said situation.

  In order to solve the above-described problem, the soundproof floor structure of the present invention is such that, in the soundproof floor structure of a wooden framed building, intersections between the beams and the small beams arranged so as to connect the beams are formed at a predetermined pitch. An elastic support spacer is disposed at the position of the crossing portion on the double floor lower side plate arranged so as to cover the beam and the small beam, and other than the crossing portion having a half pitch of the predetermined pitch. The elastic support spacers are also disposed at the locations, and the double floor upper plate is disposed so as to cover the elastic support spacers and form a space.

  If it is said structure, since the double floor structure by the said elastic support spacer is formed, soundproofing performance will improve. Further, the elastic support spacer is arranged at the position of the intersection on the double floor lower side plate arranged so as to cover the beam and the small beam, and further, other than the intersection where the half pitch is the predetermined pitch. It is also arranged at the location. Thereby, while the arrangement pitch of the elastic support spacers is not too wide, the feeling of walking (stiffness) of the floor is improved, while it is not too narrow, and a decrease in sound insulation can be prevented. That is, it is possible to achieve both soundproof performance and a feeling of walking on the floor.

  The predetermined pitch may be 1000 mm, 910 mm, or 900 mm, and the half pitch may be 500 mm, 455 mm, or 450 mm.

  The elastic support spacers as a whole may be made of the same elastic material. According to this, the cost of the said elastic support spacer can be made low compared with the support spacer which has leg parts, such as a volt | bolt.

  One or a plurality of sound insulation mats may be disposed on the double floor upper plate, and a floor base plate may be disposed on the sound insulation mat. According to this, the sound insulation is further improved.

  The elastic support spacer and the double floor lower side plate may be fixed by a double-sided tape or an adhesive. Moreover, the said elastic support spacer and the said double floor upper board may be fixed with the double-sided tape or the adhesive agent. According to this, it is possible to prevent the elastic support spacers from being displaced due to an earthquake or the like. Further, when the elastic support spacer is fixed with a nail or a bolt, there is a possibility that sound may be propagated downstairs by the nail or the like, but such a fear is not caused. Furthermore, when the double-sided tape or the like is used, the arrangement work of the elastic support spacer is simplified and the workability is improved.

The elastic support spacer has a durometer hardness of 55 or more and 75 or less, or a corresponding hardness range, and the elastic support spacer has a height of 50 mm or more and 100 mm or less. The cross-sectional area may be within a range of 7569 mm ² ± 35%. According to this, it is possible to reduce the cost by securing the height of the space in the double floor structure and using the elastic support spacer having general-purpose hardness while maintaining both walking feeling and sound insulation by the arrangement pitch of the elastic support spacer. Can be planned.

  If it is this invention, there exists an effect that soundproof performance and the feeling of walking on a floor can be made compatible as a soundproof floor structure of a wooden frame building.

It is sectional drawing which showed the soundproof floor structure of the wooden frame building concerning embodiment of this invention. It is the top view which showed the arrangement | positioning relationship of the beam in the soundproof floor structure of FIG. 1, a small beam, and an elastic support spacer. It is the perspective view which showed the arrangement | positioning relationship of the beam in the soundproof floor structure of FIG. 1, a small beam, and an elastic support spacer.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, in the soundproof floor structure of the wooden frame building of this embodiment, the intersections of the beam 1 and the small beam 2 arranged so as to connect the beam 1 are at a predetermined pitch. A double floor lower side plate 3 is formed so as to cover the beam 1 and the small beam 2. The predetermined pitch is, for example, 1000 mm. The double floor lower side plate 3 is made of a plywood or particle board having a thickness of 24 mm to 35 mm, and is fixed to the beam 1 with nails or the like.

  Further, as shown in FIG. 3, the elastic support spacer 4 is arranged at the position of the intersection on the double floor lower side plate 3. Furthermore, the elastic support spacers 4 are also arranged at locations other than the intersecting portions that are half pitches (500 mm) of the predetermined pitch. As shown in FIG. 1, the double floor upper plate 5 is disposed on the elastic support spacer 4 so as to cover the elastic support spacer 4 and form a space. The double floor upper plate 5 is made of a plywood or particle board having a thickness of 24 mm to 35 mm.

  The elastic support spacer 4 and the double floor lower side plate 3 are fixed by a double-sided tape or an adhesive. The elastic support spacer 4 and the double floor upper plate 5 are also fixed by a double-sided tape or an adhesive.

  A sound absorbing material 6 is provided in the space between the double floor lower plate 3 and the double floor upper plate 5. The sound absorbing material 6 is made of glass wool having a thickness of 50 mm, for example.

  Two sound insulation mats 7 are disposed on the double floor upper plate 5. The sound insulation mat 7 is made of an asphalt material and has a thickness of 8 mm. A floor base plate 8 is disposed on the sound insulating mat 7. The floor base plate 8 is made of 12 mm thick plywood.

  The double floor upper plate 5, the sound insulation mat 7, and the floor base plate 8 are fixed to each other by nails (for example, a length of 38 mm). Further, the floor base plate 8 and the floor finish plate 9 disposed thereon are fixed to each other by an adhesive and a floor nail. In this way, the floor materials are fixed to each other, thereby preventing the generation of sound due to flapping of the floor materials.

  A suspension tree 10 is fixed to the beam 1 with nails, and a field edge receiver 11 is supported by the suspension tree 10. A field edge 12 is fixed to the field edge receiver 11, and two gypsum boards 13 having a thickness of 12.5 mm are fixed to the field edge 12 with nails. Glass wool is disposed on the gypsum board 13 (back of the ceiling).

The elastic support spacer 4 as a whole has a hexahedral shape made of an elastic material such as chloroprene rubber, has a cross-sectional dimension of 87 × 87 mm (in this case, the cross-sectional area is 7569 mm ² ), a height of 80 mm, and a durometer hardness. 65. Of course, this is only an example, and the elastic support spacer may have a cross-sectional area of 7569 mm ² ± 35% or less. In this embodiment, the cross-sectional dimension of the bundle member used in the building is 87 × 87 mm, and the cross-sectional dimension of the elastic support spacer 4 is made to coincide with this cross-sectional dimension. The height of the elastic support spacer 4 is 50 mm or more and 100 mm or less, and the hardness of the elastic support spacer 4 is in the range of 55 or more and 75 or less in durometer hardness or a hardness range corresponding thereto. The elastic support spacer 4 is not limited to a rubber material such as the chloroprene rubber, and an elastic body made of a soft resin (thermoplastic elastomer) or the like can be used.

The weight per square meter in the state where the elastic support spacer 4 is omitted in the floor having the above structure is 14.4 kg / m ² per square meter of the double floor lower side plate 3 and the double floor upper plate 5. The weight per square meter of the sound absorbing material 6 is 0.5 kg / m ² , the weight per square meter of the sound insulating mat 7 is 25.6 kg / m ² , and the weight per square meter of the floor base plate 8 is 7.2 kg / ^{m 2,} when the weight per square meter of the floor finish plate 9 and 7.2 kg / ^{m 2,} a total of 94.9kg / ^{m 2.} Since there are four elastic support spacers 4 per square meter, the total weight of the four total weights is the weight per square meter on the floor.

The weight per square meter of the ceiling is 0.5 kg / m ² for the glass wool on the back of the ceiling, 6.0 kg / m ² for the weight of the field 12 per square meter, and the gypsum board. the weight per square meter of 13 When 9.4 kg / ^{m 2,} a total of 25.3kg / ^{m 2.}

  As described above, since the double floor structure is formed by the elastic support spacer 4, the soundproofing performance is improved. Further, the elastic support spacer 4 is disposed at the position of the intersecting portion formed at a predetermined pitch (1000 mm) on the double floor lower side plate 3 disposed so as to cover the beam 1 and the small beam 2, Since the elastic support spacers 4 are arranged at locations other than the intersecting portion, which is a half pitch (500 mm) of the predetermined pitch, the arrangement pitch of the elastic support spacers 4 is not too wide, and the walking feeling (rigidity) of the floor is improved Since it is not too narrow, it is possible to prevent a decrease in sound insulation. That is, it is possible to achieve both soundproof performance and a feeling of walking on the floor.

  Further, when the elastic support spacer 4 is made of the same elastic material as a whole, the cost of the elastic support spacer 5 can be reduced as compared with a support spacer having leg portions such as bolts. Moreover, if the sound insulation mat 7 is arrange | positioned on the said double floor upper board 5, sound insulation property will improve further.

  The elastic support spacer 4 and the double floor lower plate 3 are fixed by a double-sided tape or an adhesive, and the elastic support spacer 4 and the double floor upper plate 5 are fixed by a double-sided tape or an adhesive. If it exists, it can prevent that the arrangement | positioning of the said elastic support spacer 4 arises by an earthquake etc. Further, when the elastic support spacer 4 is fixed with a nail or a bolt, there is a possibility that sound may be propagated downstairs by the nail or the like, but such a fear is not caused. Furthermore, the arrangement | positioning operation | work of the said elastic support spacer 4 is simplified, and workability | operativity improves.

The elastic support spacer 4 has a durometer hardness of 55 or more and 75 or less or a corresponding hardness range, and the elastic support spacer has a height of 50 mm or more and 100 mm or less. When the cross-sectional area of the support spacer is within a range of 7569 mm ² ± 35%, the space height in the double floor structure is ensured and general purpose while maintaining both walking feeling and sound insulation by the arrangement pitch of the elastic support spacer 4 The cost can be reduced by using the elastic support spacer 4 having a certain hardness.

  Within the above range, the feeling of walking and sound insulation can be kept constant by increasing the cross-sectional area of the elastic support spacer 4 to reduce the hardness, or decreasing the cross-sectional area of the elastic support spacer 4 to increase the hardness. It can be compatible within the range. Similarly, within the above range, the height of the elastic support spacer 4 is lowered to decrease the hardness of the elastic support spacer 4, or the height of the elastic support spacer 4 is increased to increase the height of the elastic support spacer 4. By increasing the hardness, it is possible to achieve both walking feeling and sound insulation within a certain range.

  In the above-described embodiment, the structure example in which the predetermined pitch is 1000 mm and the arrangement pitch of the elastic support spacers 4 is 500 mm is shown. However, the configuration is not limited thereto, and the arrangement of the elastic support spacers 4 is 910 mm. A structure in which the pitch is 455 mm or a structure in which the predetermined pitch is 900 mm and the arrangement pitch of the elastic support spacers 4 is 450 mm can be employed. Even in such an arrangement pitch, the elastic support spacer 4 can be selected within the hardness range, height range, and cross-sectional area range. The overall numerical value of the heavy floor impact sound insulation performance varies depending on the arrangement pitch, hardness, cross-sectional dimensions, and height of the elastic support spacer 4 as well as the thickness of the floor component plate material and the presence or absence of a sound insulation mat. Such a factor also affects the feeling of walking on the floor. The thickness, number, etc. of the floor constituting plate material and the sound insulation mat are not limited.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1 Beam 2 Beam 3 Double floor lower board 4 Elastic support spacer 5 Double floor upper board 6 Sound absorbing material 7 Sound insulation mat 8 Floor base material 9 Floor finish board

Claims (7)

  In the soundproof floor structure of a wooden framed building, the intersections between the beams and the small beams arranged so as to connect the beams are formed at a predetermined pitch, and the two beams are arranged so as to cover the beams and the small beams. An elastic support spacer is disposed at the position of the intersection on the lower floor plate, and the elastic support spacer is also disposed at a location other than the intersection where the predetermined pitch is a half pitch, covering the elastic support spacer. The soundproof floor structure is characterized in that a double floor upper plate is arranged so as to form a space.   The soundproof floor structure according to claim 1, wherein the predetermined pitch is 1000 mm, 910 mm, or 900 mm, and the half pitch is 500 mm, 455 mm, or 450 mm.   The soundproof floor structure according to claim 1 or 2, wherein the elastic support spacers are entirely made of the same elastic material.   The soundproof floor structure according to any one of claims 1 to 3, wherein one or a plurality of sound insulation mats are disposed on the double floor upper plate, and a floor base plate is disposed on the sound insulation mat. Soundproof floor structure characterized by being arranged.   The soundproof floor structure according to any one of claims 1 to 4, wherein the elastic support spacer and the double floor lower side plate are fixed with a double-sided tape or an adhesive. .   The soundproof floor structure according to any one of claims 1 to 5, wherein the elastic support spacer and the double floor upper plate are fixed by a double-sided tape or an adhesive. . The soundproof floor structure according to any one of claims 1 to 6, wherein the elastic support spacer has a durometer hardness of 55 or more and 75 or less or a hardness range corresponding thereto, and the elasticity A soundproof floor structure, wherein the height of the support spacer is in the range of 50 mm to 100 mm, and the cross-sectional area of the elastic support spacer is in the range of 7569 mm ² ± 35%.

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