Soundproofing structure of partition walls and construction method of partition walls

Abstract

To provide a sound insulation structure for partition walls and a construction method for partition walls that can reduce costs while maintaining sound insulation performance.SOLUTION: A sound insulation structure of a partition wall comprises: a first face material 31; a second face material 32 disposed between the first face material and a hollow space S3; a plurality of interstitial columns 34 arranged horizontally in the hollow space; a first sound insulation face material 42 having a different coincidence frequency than the first face material, smaller in width than the first face material and larger in width than the interstitial columns, and sandwiched between the first face material and the interstitial columns; and a second sound insulation face material 43 having a different coincidence frequency than the second face material, smaller in width than the second face material and larger in width than the interstitial columns, and sandwiched between the second face material and the intervening columns. The interstitial columns sandwiching the first sound insulation face material together with the first face material are arranged with a gap between them and the second face material. The interstitial columns sandwiching the second sound insulation face material together with the second face material are arranged with a gap G1 between them and the first face material.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a sound insulation structure for a partition wall and a method for constructing a partition wall. [Background technology]

[0002] Various studies have been conducted on soundproofing measures to prevent sound leakage from one space to the other between two spaces separated by a partition wall in a building, as described in Patent Document 1. Patent Document 1 describes a soundproof partition wall in which hollow columns are arranged in a staggered pattern in the cross section of the wall and different types of fire-resistant boards are attached to each hollow column in a stacked manner. This partition wall is said to suppress resonance transmission and prevent a decrease in sound insulation value by using different types of fire-resistant boards in a stacked manner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 63-37710 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, two fireproof boards of the same width are stacked on top of each other, which increases the amount of board material used. As a result, although sound insulation performance is improved to some extent, it is difficult to achieve both sound insulation performance and cost reduction.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a soundproofing structure for a partition wall and a method for constructing a partition wall that can reduce costs while maintaining soundproofing performance. [Means for solving the problem]

[0006] A sound-insulating structure for a partition wall according to one aspect of the present invention comprises a first panel, a second panel arranged with a hollow space between it and the first panel, a plurality of studs arranged horizontally in the hollow space, a first sound-insulating panel having a different coincidence frequency from that of the first panel, a width smaller than that of the first panel but larger than that of the studs, and sandwiched between the first panel and the studs, and a second sound-insulating panel having a different coincidence frequency from that of the second panel, a width smaller than that of the second panel but larger than that of the studs, and sandwiched between the second panel and the studs. The studs sandwiching the first sound-insulating panel together with the first panel are arranged with a gap between them. The studs sandwiching the second sound-insulating panel together with the second panel are arranged with a gap between them. The width of the first sound-insulating panel is 60% or more of the width of the first panel. In addition, a sound-insulating structure for a partition wall according to another aspect of the present invention comprises a first panel, a second panel arranged with a hollow space between it and the first panel, a plurality of studs arranged horizontally in the hollow space, a first sound-insulating panel having a different coincidence frequency from that of the first panel, a width smaller than that of the first panel but larger than that of the studs, and sandwiched between the first panel and the studs, and a second sound-insulating panel having a different coincidence frequency from that of the second panel, a width smaller than that of the second panel but larger than that of the studs, and sandwiched between the second panel and the studs, wherein the studs sandwiching the first sound-insulating panel together with the first panel are arranged with a gap between them, and the studs sandwiching the second sound-insulating panel together with the second panel are arranged with a gap between them, and the width of the second sound-insulating panel is 60% or more of the width of the second panel.

[0007] In the soundproofing structure of the partition wall, the width of the first soundproofing panel is smaller than the width of the first panel, and the width of the second soundproofing panel is smaller than the width of the second panel. Therefore, compared to overlapping panels of the same width, the amount of panel material used can be reduced, leading to cost savings. Furthermore, in the soundproofing structure of the partition wall, the widths of the first soundproofing panel and the second soundproofing panel are each larger than the width of the stud, so soundproofing performance can be maintained even if the amount of panel material used is reduced to reduce costs.

[0008] Furthermore, the studs that sandwich the first sound-insulating surface material together with the first panel have a gap between them and the second panel, and the studs that sandwich the second sound-insulating surface material together with the second panel have a gap between them and the first panel. This makes it possible to separate the first panel from the second panel, and even if the studs are arranged horizontally, it is possible to obtain the same sound-insulating effect as when they are arranged in a staggered pattern as in Patent Document 1.

[0009] Sound insulation structure of the above partition wall On the other hand wherein the width of the first sound-insulating panel is 60% or more of the width of the first panel. On the other hand, The width of the second sound-insulating panel is 60% or more of the width of the second panel. R .

[0010] As a result of intensive research by the inventors, it has become clear that a decrease in sound insulation performance can be suppressed by setting the width of the first and second sound-insulating face materials to 60% or more of the width of the first and second face materials. Therefore, with the above configuration, it is possible to reduce the amount of the first and second sound-insulating face materials used while suppressing a decrease in sound insulation performance, thereby achieving cost savings.

[0011] A sound insulation structure of a partition wall according to another aspect of the present invention comprises a first panel, a second panel arranged with a hollow space between it and the first panel, a plurality of studs arranged horizontally in the hollow space, a first sound-insulating panel having a different coincidence frequency from that of the first panel, a width smaller than that of the first panel but larger than that of the studs, and sandwiched between the first panel and the studs, and a second sound-insulating panel having a different coincidence frequency from that of the second panel, a width smaller than that of the second panel but larger than that of the studs, and sandwiched between the second panel and the studs, wherein the studs sandwiching the first sound-insulating panel together with the first panel are arranged with a gap between them, and the studs sandwiching the second sound-insulating panel together with the second panel are arranged with a gap between them, and the sound-insulating structure of the partition wall is The sound-insulating structure of the partition wall further includes a floor material, a ceiling material that faces the floor material in the vertical direction, and at least one of a floor-side sound-insulating face material that is attached to a portion of the floor material between the first face material and the second face material and has a different coincidence frequency from the floor material, and a ceiling-side sound-insulating face material that is attached to a portion of the ceiling material between the first face material and the second face material and has a different coincidence frequency from the ceiling material. R . In the soundproofing structure of the partition wall, the width of the first soundproofing panel is smaller than the width of the first panel, and the width of the second soundproofing panel is smaller than the width of the second panel. Therefore, compared to overlapping panels of the same width, the amount of panel material used can be reduced, leading to cost savings. Furthermore, in the soundproofing structure of the partition wall, the widths of the first soundproofing panel and the second soundproofing panel are each larger than the width of the stud, so soundproofing performance can be maintained even if the amount of panel material used is reduced to reduce costs. Furthermore, the studs that sandwich the first sound-insulating surface material together with the first panel have a gap between them and the second panel, and the studs that sandwich the second sound-insulating surface material together with the second panel have a gap between them and the first panel. This makes it possible to separate the first panel from the second panel, and even if the studs are arranged horizontally, it is possible to obtain the same sound-insulating effect as when they are arranged in a staggered pattern as in Patent Document 1.

[0012] Furthermore, the soundproofing structure of the partition wall According to the document, at least one of a floor-side sound-insulating surface material having a different coincidence frequency from the floor material and a ceiling-side sound-insulating surface material having a different coincidence frequency from the ceiling material is attached to a portion of the floor material or ceiling material between the first and second surfaces. Therefore, when sound generated in one of the spaces separated by the first and second surfaces attempts to propagate to the other space through the floor material or ceiling material due to the coincidence effect, the coincidence effect can be suppressed by the sound-insulating surface material between the first and second surfaces of the floor material or ceiling material. This suppresses sound leakage into adjacent spaces through the floor material or ceiling material, making it possible to improve sound insulation performance.

[0013] The sound-insulating structure of the partition wall may further include a positioning member that positions the stud. The first and second face materials may be arranged so that their upper end surfaces abut against the ceiling material and a gap is provided between their lower end surfaces and the floor material. The sound-insulating structure of the partition wall may include at least the floor-side sound-insulating face material out of the floor-side sound-insulating face material and the ceiling-side sound-insulating face material. The floor-side sound-insulating face material may be thicker than the gap, be arranged on the floor material so as to close the gap from the hollow portion side, and include a portion with a greater surface density than the positioning member.

[0014] With this configuration, the gaps between the first and second face materials and the floor material are blocked from the hollow space between the face materials by the floor-side sound-insulating face material, thereby suppressing sound leakage into the adjacent room through the gaps. Moreover, because the floor-side sound-insulating face material includes a portion with a higher surface density than the positioning member, it is possible to further improve sound insulation performance compared to blocking the gaps by placing the positioning member directly on the floor material.

[0015] The sound-insulating structure of the partition wall may further include a positioning member that positions the stud. The first and second face materials may be arranged so that their lower end surfaces abut against the floor material and a gap is provided between their upper end surfaces and the ceiling material. The sound-insulating structure of the partition wall may include at least the ceiling-side sound-insulating face material out of the floor-side sound-insulating face material and the ceiling-side sound-insulating face material. The ceiling-side sound-insulating face material may be thicker than the gap, be arranged on the ceiling material so as to close the gap from the hollow portion side, and include a portion with a greater surface density than the positioning member.

[0016] With this configuration, the gaps between the first and second face materials and the ceiling material are blocked from the hollow portion side of the face materials by the ceiling-side sound-insulating face material, thereby suppressing sound leakage into the adjacent room through the gaps. Moreover, because the ceiling-side sound-insulating face material includes a portion with a higher surface density than the positioning member, it is possible to further improve sound insulation performance compared to blocking the gaps by placing the positioning member directly on the ceiling material.

[0017] A sound-insulating structure for a partition wall according to another aspect of the present invention comprises a first panel, a second panel arranged with a hollow space between it and the first panel, a plurality of studs arranged horizontally in the hollow space, a first sound-insulating panel having a different coincidence frequency from that of the first panel, being narrower than the first panel but wider than the studs, and sandwiched between the first panel and the studs, and a second sound-insulating panel having a different coincidence frequency from that of the second panel, being narrower than the second panel but wider than the studs, and sandwiched between the second panel and the studs, wherein the studs sandwiching the first sound-insulating panel together with the first panel are arranged with a gap between them, and the studs sandwiching the second sound-insulating panel together with the second panel are arranged with a gap between them.The sound-insulating structure of the partition wall further includes a floor material and a ceiling material that faces the floor material in the vertical direction. R The first and second panels form a partition wall that divides the space inside the building into a first space and a second space that are adjacent in the horizontal direction. R The first surface member has a first outer surface facing the first space. R The second surface member has a second outer surface facing the second space. R The sound-insulating structure of the partition wall further includes at least one of a first ceiling-side sound-insulating surface material having a different coincidence frequency from the ceiling material and attached to a portion of the ceiling material between at least a position corresponding to the first outer surface and a position corresponding to the horizontal center of the first space, and a second ceiling-side sound-insulating surface material having a different coincidence frequency from the ceiling material and attached to a portion of the ceiling material between at least a position corresponding to the second outer surface and a position corresponding to the horizontal center of the second space. R . In the soundproofing structure of the partition wall, the width of the first soundproofing panel is smaller than the width of the first panel, and the width of the second soundproofing panel is smaller than the width of the second panel. Therefore, compared to overlapping panels of the same width, the amount of panel material used can be reduced, leading to cost savings. Furthermore, in the soundproofing structure of the partition wall, the widths of the first soundproofing panel and the second soundproofing panel are each larger than the width of the stud, so soundproofing performance can be maintained even if the amount of panel material used is reduced to reduce costs. Furthermore, the studs that sandwich the first sound-insulating surface material together with the first panel have a gap between them and the second panel, and the studs that sandwich the second sound-insulating surface material together with the second panel have a gap between them and the first panel. This makes it possible to separate the first panel from the second panel, and even if the studs are arranged horizontally, it is possible to obtain the same sound-insulating effect as when they are arranged in a staggered pattern as in Patent Document 1.

[0018] Furthermore, the soundproofing structure of the partition wall When sound generated in one of the first and second spaces separated by a partition wall attempts to propagate to the other space through the ceiling material due to the coincidence effect, the coincidence effect of the ceiling material can be suppressed, thereby suppressing sound leakage to the adjacent space through the ceiling material and improving sound insulation performance.

[0019] A sound-insulating structure for a partition wall according to another aspect of the present invention comprises a first panel, a second panel arranged with a hollow space between it and the first panel, a plurality of studs arranged horizontally in the hollow space, a first sound-insulating panel having a different coincidence frequency from that of the first panel, being narrower than the first panel but wider than the studs, and sandwiched between the first panel and the studs, and a second sound-insulating panel having a different coincidence frequency from that of the second panel, being narrower than the second panel but wider than the studs, and sandwiched between the second panel and the studs, wherein the studs sandwiching the first sound-insulating panel together with the first panel are arranged with a gap between them, and the studs sandwiching the second sound-insulating panel together with the second panel are arranged with a gap between them. The sound-insulating structure of the partition wall further includes a floor material and a ceiling material that faces the floor material in the vertical direction. R The first and second panels form a partition wall that divides the space inside the building into a first space and a second space that are adjacent in the horizontal direction. R The first surface member has a first outer surface facing the first space. R The second surface member has a second outer surface facing the second space. RThe sound-insulating structure of the partition wall further includes at least one of a wall extending in a direction intersecting the partition wall, a first wall sound-insulating surface material having a different coincidence frequency from that of the wall and attached to a portion of the wall between at least a position corresponding to the first outer surface and a position corresponding to the horizontal center of the first space, and a second wall sound-insulating surface material having a different coincidence frequency from that of the wall and attached to a portion of the wall between at least a position corresponding to the second outer surface and a position corresponding to the horizontal center of the second space. R . In the soundproofing structure of the partition wall, the width of the first soundproofing panel is smaller than the width of the first panel, and the width of the second soundproofing panel is smaller than the width of the second panel. Therefore, compared to overlapping panels of the same width, the amount of panel material used can be reduced, leading to cost savings. Furthermore, in the soundproofing structure of the partition wall, the widths of the first soundproofing panel and the second soundproofing panel are each larger than the width of the stud, so soundproofing performance can be maintained even if the amount of panel material used is reduced to reduce costs. Furthermore, the studs that sandwich the first sound-insulating surface material together with the first panel have a gap between them and the second panel, and the studs that sandwich the second sound-insulating surface material together with the second panel have a gap between them and the first panel. This makes it possible to separate the first panel from the second panel, and even if the studs are arranged horizontally, it is possible to obtain the same sound-insulating effect as when they are arranged in a staggered pattern as in Patent Document 1.

[0020] Furthermore, the soundproofing structure of the partition wall When sound generated in one of the first and second spaces separated by a partition wall attempts to propagate to the other space through a wall (a wall that intersects with the partition wall) due to the coincidence effect, the coincidence effect of the wall can be suppressed, thereby suppressing sound leakage into the adjacent space through the wall and improving sound insulation performance.

[0021] A partition wall construction method according to another aspect of the present invention includes the steps of arranging a plurality of studs in a horizontal direction, attaching first sound-insulating face materials, the first face material being wider than the studs, to one outer surface of the studs, attaching second sound-insulating face materials, the second face material being wider than the studs, to the other outer surface of the studs, fixing the first face material from the outside of the first sound-insulating face material so as to leave a gap between the stud to which the second sound-insulating face material is attached, and fixing the second face material from the outside of the second sound-insulating face material so as to leave a gap between the stud to which the first sound-insulating face material is attached. The first sound-insulating face material has a different coincidence frequency from the first face material and is narrower than the first face material. The second sound-insulating face material has a different coincidence frequency from the second face material and is narrower than the second face material.

[0022] According to this construction method, by using a first sound-insulating face material that is wider than the studs but narrower than the first face material, and a second sound-insulating face material that is wider than the studs but narrower than the second face material, it is possible to construct a partition wall that maintains sound-insulating performance while reducing costs. Moreover, with this method, the construction is performed in the order of studs, first and second sound-insulating face materials, and first and second face materials. Therefore, unlike methods in which the first and second sound-insulating face materials are installed after the first and second face materials, there is no need to enter the hollow portion of the partition wall to install the first and second sound-insulating face materials. This reduces the workload and ensures stable construction quality. [Effects of the Invention]

[0023] As is clear from the above description, the present invention can provide a sound insulation structure for a partition wall and a method for constructing a partition wall that can reduce costs while maintaining sound insulation performance. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a first embodiment of the present invention. [Figure 2] 1 is a horizontal cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a first embodiment of the present invention. [Figure 3] FIG. 10 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a second embodiment of the present invention. [Figure 4] FIG. 10 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a third embodiment of the present invention. [Figure 5] FIG. 10 is an enlarged view of the vicinity of a floor-side sound-insulating surface material of a sound-insulating structure for a partition wall according to a third embodiment of the present invention. [Figure 6] FIG. 10 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a fourth embodiment of the present invention. [Figure 7] FIG. 10 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a fifth embodiment of the present invention. [Figure 8]FIG. 10 is a horizontal cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a sixth embodiment of the present invention. [Figure 9] FIG. 10 is a vertical cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a sixth embodiment of the present invention. [Figure 10] FIG. 20 is a horizontal cross-sectional view schematically showing the configuration of a sound-insulating structure of a partition wall according to a modified example of the sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0026] (Embodiment 1) First, the configuration of a sound-insulating structure 1 for a partition wall according to a first embodiment of the present invention (hereinafter also simply referred to as "sound-insulating structure 1") will be described with reference to Figs. 1 and 2. Fig. 1 schematically shows a cross section of a partition wall 30 taken along the vertical direction. Fig. 2 schematically shows a cross section of a partition wall 30 taken along the horizontal direction. Fig. 1 is a vertical cross section taken along line II in Fig. 2.

[0027] The sound-insulating structure 1 is intended to suppress sound leakage from one of two spaces (a first space S1 and a second space S2) separated by a partition wall 30 in a building such as a house to the other. As shown in Figs. 1 and 2, the sound-insulating structure 1 mainly comprises a floor material 10, a ceiling material 20, a partition wall 30, a ceiling-side sound-insulating surface material 40, a floor-side sound-insulating surface material 41, a first wall-side sound-insulating surface material 42 (first sound-insulating surface material), and a second wall-side sound-insulating surface material 43 (second sound-insulating surface material). Each of these components will be described below.

[0028] The flooring material 10 has a floor surface 13 facing a space S0 within a building (for example, a living space within a house). As shown in Figure 1, the flooring material 10 has plywood 12 laid horizontally and flooring 11 laid on the plywood 12. The upper surface of the flooring 11 forms the floor surface 13.

[0029] The ceiling material 20 faces the floor material 10 in the vertical direction across the space S0. The ceiling material 20 is, for example, a plasterboard, and has a ceiling underside 21 that is parallel to the floor surface 13 and faces the space S0 side.

[0030] The partition wall 30 extends vertically and divides the space S0 into a first space S1 and a second space S2. As shown in Fig. 1, the floor material 10 and the ceiling material 20 in this embodiment have a continuous structure from the first space S1 to the second space S2 across the partition wall 30 without any notches or gaps formed along the way, but this is not limiting.

[0031] The partition wall 30 mainly comprises a first panel 31, a second panel 32 arranged between the first panel 31 and the second panel 32 with a hollow section S3 sandwiched therebetween, a plurality of studs 34 arranged in a horizontal direction (wall surface direction) in the hollow section S3, and sound-absorbing material 33.

[0032] 1, the first face material 31 extends in the vertical direction. The first face material 31 is disposed perpendicular to the floor material 10 and the ceiling material 20, and has a first outer surface 31A facing the first space S1, a first upper end surface 31B facing the ceiling underside 21, a first lower end surface 31C facing the floor surface 13, and a first inner surface 31D (FIG. 2) facing the hollow portion S3. The first face material 31 is, for example, gypsum board, but is not limited to this.

[0033] The second face material 32 extends in the vertical direction, similar to the first face material 31. The second face material 32 is parallel to the first face material 31 and has a second outer surface 32A facing the second space S2, a second upper end surface 32B facing the ceiling underside 21, a second lower end surface 32C facing the floor surface 13, and a second inner surface 32D (FIG. 2) facing the hollow portion S3 and opposing the first inner surface 31D across the hollow portion S3. In this embodiment, the first face material 31 and the second face material 32 are rectangular in plan view and are gypsum boards having the same thickness and coincidence frequency as the ceiling material 20, but are not limited to this.

[0034] The studs 34 extend vertically and are arranged in plurality at equal intervals in the horizontal direction (toward the wall surface) in the hollow portion S3 (FIG. 2). In this embodiment, the studs 34 are made of C-shaped steel, and a plurality of reinforcing plates (not shown) are attached to close the openings. The reinforcing plates are attached to the C-shaped steel with gaps between them in the vertical direction. Note that the studs are not limited to C-shaped steel, and may be, for example, hollow steel or wooden pillars.

[0035] The sound-absorbing material 33 is a member that absorbs sound propagating from one of the first space S1 and the second space S2 to the partition wall 30, and is laid out in the hollow portion S3. As shown in Fig. 2, the sound-absorbing material 33 extends horizontally (toward the wall surface) at approximately the center in the wall thickness direction of the hollow portion S3, is inserted into the gaps between the reinforcing plates, and is divided by the webs of the partition studs 34. The sound-absorbing material 33 in this embodiment is glass wool, but is not limited to this.

[0036] The ceiling-side sound-insulating surface material 40 (FIG. 1) has a different coincidence frequency from the ceiling material 20, and is attached to a portion of the ceiling material 20 between the first surface material 31 and the second surface material 32, i.e., a portion (ceiling underside 21) within the thickness range of the partition wall 30 (FIG. 1). Specifically, the ceiling-side sound-insulating surface material 40 is a gypsum board of a constant thickness containing glass fiber nonwoven fabric, and has a coincidence frequency that is 1 / 12 octave different from that of the ceiling material 20. The ceiling-side sound-insulating surface material 40 is attached to the ceiling underside 21, for example, with an adhesive. The ceiling-side sound-insulating surface material 40 may be attached to the ceiling underside 21 after adhesive has been applied to the entire surface, or may be attached to a portion of the surface after adhesive has been applied. The ceiling-side sound-insulating surface material 40 may be omitted.

[0037] 1, the ceiling-side sound-insulating panel material 40 in this embodiment is attached to the entire area of ​​the ceiling material 20 (ceiling undersurface 21) from the first panel material 31 to the second panel material 32. One widthwise end portion 40A of the ceiling-side sound-insulating panel material 40 is sandwiched between the ceiling undersurface 21 and the first upper end surface 31B, while the other widthwise end portion 40B of the ceiling-side sound-insulating panel material 40 is sandwiched between the ceiling undersurface 21 and the second upper end surface 32B. The one end portion 40A is substantially flush with the first outer surface 31A, and the other end portion 40B is substantially flush with the second outer surface 32A.

[0038] Furthermore, the ceiling-side sound-insulating surface material 40 in this embodiment is attached to a portion of the ceiling material 20 that is within the thickness range of the partition wall 30 and has a predetermined length in the wall surface direction of the partition wall 30. Specifically, the ceiling-side sound-insulating surface material 40 is attached to the ceiling underside 21 over the entire wall surface direction of the partition wall 30 (the depth direction of the paper in FIG. 1 ). In other words, the ceiling-side sound-insulating surface material 40 is a board material that has short sides corresponding to the thickness of the partition wall 30 and long sides corresponding to the width of the partition wall 30.

[0039] The floor-side sound-insulating surface material 41 has a different coincidence frequency from the floor material 10, and is attached to a portion of the floor material 10 between the first surface material 31 and the second surface material 32, i.e., a portion within the thickness range of the partition wall 30. Like the ceiling-side sound-insulating surface material 40, the floor-side sound-insulating surface material 41 is a gypsum board of a constant thickness containing glass fiber nonwoven fabric, and has a coincidence frequency that is 1 / 12 octave different from that of the floor material 10. Like the ceiling-side sound-insulating surface material 40, the floor-side sound-insulating surface material 41 is attached to the floor surface 13, for example with an adhesive. The floor-side sound-insulating surface material 41 may be omitted.

[0040] The floor-side sound-insulating surface material 41 in this embodiment is attached to the entire area of ​​the floor material 10 (floor surface 13) from the first surface material 31 to the second surface material 32. As shown in Fig. 1, one end 41A in the width direction of the floor-side sound-insulating surface material 41 is sandwiched between the first lower end surface 31C and the floor surface 13, while the other end 41B of the floor-side sound-insulating surface material 41 is sandwiched between the second lower end surface 32C and the floor surface 13. The one end 41A is substantially flush with the first outer surface 31A, and the other end 41B is substantially flush with the second outer surface 32A.

[0041] The floor-side sound-insulating surface material 41 in this embodiment is attached to a portion of the floor material 10 that is within the thickness range of the partition wall 30 and has a predetermined length in the wall surface direction of the partition wall 30. Specifically, the floor-side sound-insulating surface material 41 is attached to the floor surface 13 over the entire wall surface direction of the partition wall 30. In other words, the floor-side sound-insulating surface material 41 has short sides corresponding to the thickness of the partition wall 30 and long sides corresponding to the width of the partition wall 30, and is a board material of approximately the same size and shape as the ceiling-side sound-insulating surface material 40.

[0042] The first wall-side sound-insulating face material 42 (FIG. 2) has a different coincidence frequency from the first face material 31 and is thinner than the first face material 31, and is sandwiched between the first face material 31 and the studs 34. Specifically, the first wall-side sound-insulating face material 42 in this embodiment is a fiber-mixed gypsum board whose coincidence frequency differs from that of the first face material 31 by 1 / 12 octave.

[0043] 2, the center of the first wall-side sound-insulating panel 42 in this embodiment in the width direction substantially coincides with the stud 34, and the first wall-side sound-insulating panel 42 is fixed to every other stud 34 arranged horizontally. The first wall-side sound-insulating panel 42 is fixed to one outer surface of the stud 34 (the surface facing the first space S1) with screws, and is attached to the first inner surface 31D with adhesive in spots. Specifically, adhesive is applied in spots to both ends of the outer surface (the surface facing the first space S1) of the first wall-side sound-insulating panel 42, and the first panel 31 is attached to this.

[0044] The first wall-side sound-insulating panel 42 has a width in the wall surface direction that is smaller than that of the first panel 31, and a width in the wall surface direction that is larger than that of the studs 34. More specifically, the width in the wall surface direction of the first wall-side sound-insulating panel 42 is 60% or more of the width of the first panel 31, and is 60% or more of the distance between adjacent studs 34 attached to the first panel 31 side. As shown in FIG. 2 , both widthwise ends of the first wall-side sound-insulating panel 42 extend just short of the adjacent studs 34.

[0045] 2, the stud 34, which sandwiches the first wall-side sound-insulating panel 42 together with the first panel 31, is disposed with a gap G1 between it and the second panel 32 (second inner surface 32D). In this embodiment, this gap G1 is the same as the thickness of the second wall-side sound-insulating panel 43, but is not limited to this.

[0046] The second wall-side sound-insulating face material 43 has a different coincidence frequency from the second face material 32 and is thinner than the second face material 32, and is sandwiched between the second face material 32 and the studs 34. Specifically, the second wall-side sound-insulating face material 43 in this embodiment is a fiber-mixed gypsum board whose coincidence frequency is 1 / 12 octave different from that of the second face material 32. In this embodiment, the second wall-side sound-insulating face material 43 has the same thickness as the first wall-side sound-insulating face material 42.

[0047] In this embodiment, the second wall-side sound-insulating panel material 43 has its widthwise center substantially aligned with the stud 34 and is fixed to every other stud 34 arranged horizontally, but is not fixed to the stud 34 to which the first wall-side sound-insulating panel material 42 is fixed. Therefore, as shown in Fig. 2, the first wall-side sound-insulating panel material 42 and the second wall-side sound-insulating panel material 43 are arranged in a staggered pattern in the wall surface direction. The second wall-side sound-insulating panel material 43 is fixed with screws to the other outer surface of the stud 34 (the surface facing the second space S2) and is attached at points with an adhesive to the second inner surface 32D.

[0048] The second wall-side sound-insulating panel 43 has a width in the wall direction that is smaller than that of the second panel 32, but is larger than that of the studs 34. More specifically, the width in the wall direction of the second wall-side sound-insulating panel 43 is 60% or more of the width of the second panel 32, and is 60% or more of the distance between adjacent studs 34 attached to the second panel 32 side. As shown in FIG. 2 , both widthwise ends of the second wall-side sound-insulating panel 43 extend just short of the adjacent studs 34.

[0049] The stud 34, which sandwiches the second wall-side sound-insulating panel 43 together with the second panel 32, is disposed with a gap G2 between it and the first panel 31 (first inner surface 31D). In this embodiment, this gap G2 is the same as the thickness of the first wall-side sound-insulating panel 42, but is not limited to this.

[0050] Next, a method for constructing the partition wall according to this embodiment will be described.

[0051] First, multiple studs 34 are arranged horizontally. Specifically, first, floor-side sound-insulating surface material 41 is placed on the floor surface 13 (FIG. 1) in the area where partition wall 30 is to be installed, and U-shaped runners 60 are placed and fixed upward on top of it. Then, the lower ends of studs 34 are inserted into the runners, and studs 34 are fixed to the runners. As shown in FIG. 2, multiple studs 34 are set up horizontally at equal intervals. Then, sound-absorbing material 33 is laid out.

[0052] Next, the first wall-side sound-insulating surface material 42 is attached to one outer surface (the surface facing the first space S1) of the studs 34. At this time, as shown in FIG. 2, the first wall-side sound-insulating surface material 42 is fixed with screws to every other stud 34 that is aligned horizontally.

[0053] Next, the second wall-side sound-insulating surface material 43 is attached to the other outer surface (the surface on the second space S2 side) of the stud 34. At this time, as shown in FIG. 2, the second wall-side sound-insulating surface material 43 is fixed with screws to the stud 34 to which the first wall-side sound-insulating surface material 42 is not attached.

[0054] Next, the first panel 31 is fixed from the outside of the first wall-side sound-insulating panel 42. Specifically, adhesive is applied in dots to the first inner surface 31D of the first panel 31 or the outer surface of the first wall-side sound-insulating panel 42, and the first inner surface 31D and the outer surface of the first wall-side sound-insulating panel 42 are bonded together. Thereafter, the first panel 31 is fixed to the stud 34 with screws. At this time, as shown in FIG. 2, a gap G2 is formed between the stud 34 to which the second wall-side sound-insulating panel 43 is attached and the first panel 31 (first inner surface 31D).

[0055] Next, the second face material 32 is fixed from the outside of the second wall-side sound-insulating face material 43. First, adhesive is applied in dots to the second inner surface 32D of the second face material 32 or the outer surface of the second wall-side sound-insulating face material 43, and the second inner surface 32D and the outer surface of the second wall-side sound-insulating face material 43 are bonded together. After that, the second face material 32 is fixed to the stud 34 with screws. At this time, a gap G1 is created between the stud 34 to which the first wall-side sound-insulating face material 42 is attached and the second face material 32 (second inner surface 32D). The partition wall 30 is constructed using the above procedure.

[0056] As described above, in the partition wall sound insulation structure 1 according to this embodiment, the width of the first wall-side sound-insulating face material 42 is smaller than the width of the first face material 31, and the width of the second wall-side sound-insulating face material 43 is smaller than the width of the second face material 32. This allows for a reduction in the amount of face material used and a reduction in costs compared to when face materials of the same width are stacked together. Moreover, in this sound insulation structure 1, the widths of the first wall-side sound-insulating face material 42 and the second wall-side sound-insulating face material 43 are each larger than the width of the stud 34, so sound insulation performance can be maintained even if the amount of face material used is reduced to reduce costs.

[0057] (Embodiment 2) Next, the configuration of a sound-insulating structure 1A for a partition wall according to a second embodiment of the present invention will be described with reference to Fig. 3. Fig. 3 is a vertical cross-sectional view of the sound-insulating structure 1A, and corresponds to Fig. 1 of the first embodiment.

[0058] 3, the ceiling-side sound-insulating panel material 40 in this embodiment has a width that fits within the hollow portion of the partition wall 30. In other words, one end 40A of the ceiling-side sound-insulating panel material 40 is not sandwiched between the ceiling undersurface 21 and the first upper end surface 31B, and the other end 40B is not sandwiched between the ceiling undersurface 21 and the second upper end surface 32B.

[0059] Similarly, the floor-side sound-insulating panel material 41 also has a width that fits within the hollow portion of the partition wall 30. In other words, one end 41A of the floor-side sound-insulating panel material 41 is not sandwiched between the floor surface 13 and the first lower end surface 31C, and the other end 41B is not sandwiched between the floor surface 13 and the second lower end surface 32C.

[0060] (Embodiment 3) Next, a sound-insulating structure 2 for a partition wall according to a third embodiment of the present invention (hereinafter also simply referred to as "sound-insulating structure 2") will be described with reference to Figures 4 and 5. The sound-insulating structure 2 according to the third embodiment basically has the same configuration and produces the same effects as the sound-insulating structure 1 according to the first embodiment, but differs from the first embodiment in that the floor-side sound-insulating surface material 41 is formed thicker. Only the differences from the first embodiment will be described below.

[0061] The height dimension of the first surface material 31 (the distance between the first upper end surface 31B and the first lower end surface 31C) is smaller than the distance between the floor surface 13 and the ceiling underside 21. As shown in Fig. 4, the first surface material 31 is arranged so that the first upper end surface 31B abuts against the ceiling underside 21 and so that a vertical gap (first lower gap G3) is provided between the first lower end surface 31C and the floor surface 13.

[0062] Similar to the first face material 31, the height dimension of the second face material 32 (the distance between the second upper end surface 32B and the second lower end surface 32C) is smaller than the distance between the floor surface 13 and the ceiling lower surface 21. The second face material 32 is arranged so that the second upper end surface 32B abuts against the ceiling lower surface 21 and a gap (second lower gap G4) is provided between the second lower end surface 32C and the floor surface 13.

[0063] The soundproof structure 2 is provided with positioning members 60 (runners) that position the studs 34 in the horizontal direction (the wall thickness direction of the partition wall 30). As shown in Figure 4, the positioning members 60 are placed on the floor-side soundproofing surface material 41 and fixed to the floor surface 13 with fixing devices such as screws.

[0064] 5 is an enlarged view of the vicinity of the floor-side sound-insulating surface material 41. The floor-side sound-insulating surface material 41 is thicker than the first lower gap G3 and the second lower gap G4, and is disposed on the floor surface 13 so as to close the first lower gap G3 and the second lower gap G4 from the hollow portion S3 side. 2 ) is a component including a portion where the gap between the first and second lower gaps G3 and G4 is large. Specifically, the floor-side sound-insulating surface material 41 includes a first surface material portion 47 that has the same thickness as the first and second lower gaps G3 and G4, and a second surface material portion 46 that overlaps with the lower parts of the first and second surface materials 31 and 32 in the horizontal direction (the wall thickness direction of the partition wall 30). The second surface material portion 46 is a portion of the floor-side sound-insulating surface material 41 that is above the first lower end face 31C and the second lower end face 32C, and both side surfaces in the width direction of the first surface material portion 47 close the first and second lower gaps G3 and G4 from the hollow portion S3 side.

[0065] The surface density of the second face material portion 46 is greater than the surface density of the positioning member 60. The surface density of the second face material portion 46 is preferably equal to or greater than the surface density of the first face material 31 and the surface density of the second face material 32, and is further preferably equal to or greater than the surface density of the flooring material 10. On the other hand, the surface density of the first face material portion 47 is not particularly limited, and may be smaller than the surface density of the second face material portion 46 or may be the same as the surface density of the second face material portion 46.

[0066] The floor-side sound-insulating surface material 41 in this embodiment is, for example, an asphalt-based vibration-damping material in which iron powder solidified with asphalt is sandwiched between nonwoven fabrics, but is not limited to this. Similarly to the first embodiment, the floor-side sound-insulating surface material 41 in this embodiment has a different coincidence frequency from the floor material 10, and it is preferable that the coincidence frequencies of the floor material 10 and the floor-side sound-insulating surface material 41 differ by 1 / 12 octave.

[0067] As shown in FIG. 5, the positioning member 60 includes a flat base 61 placed on the floor-side sound-insulating panel 41 (second panel portion 46), and a first end-side upright portion 63 and a second end-side upright portion 64 that rise perpendicularly from the base 61. The first end-side upright portion 63 and the second end-side upright portion 64 rise perpendicularly from both widthwise ends of the base 61. The lower end of the partition 34 (FIG. 4) is inserted into the groove between the first end-side upright portion 63 and the second end-side upright portion 64, the lower end of the first wall-side sound-insulating panel 42 is located between the first end-side upright portion 63 and the first panel 31, and the lower end of the second wall-side sound-insulating panel 43 (FIG. 2) is located between the second end-side upright portion 64 and the second panel 32. As shown in FIG. 4, a positioning member 60 is also fixed to the underside 21 of the ceiling, and the upper end of the stud 34 is inserted into the groove of the positioning member 60.

[0068] According to the sound-insulating structure 2 of the third embodiment, the gaps between the first and second face members 31 and 32 and the floor surface 13 are blocked by both side surfaces of the floor-side sound-insulating face member 41, thereby suppressing sound leakage through the gaps into adjacent rooms. Moreover, because the surface density of the floor-side sound-insulating face member 41 (second face member portion 46) is greater than the surface density of the positioning member 60, sound-insulating performance can be further improved compared to blocking the gaps by placing the positioning member 60 directly on the floor surface 13. Note that the floor-side sound-insulating face member 41 is not limited to being made of an asphalt-based vibration-damping material, and may be made of gypsum board, which has a higher surface density than the positioning member 60.

[0069] (Embodiment 4) Next, a sound-insulating structure 3 for a partition wall according to a fourth embodiment of the present invention (hereinafter also simply referred to as "sound-insulating structure 3") will be described with reference to Fig. 6. The sound-insulating structure 3 according to the fourth embodiment basically has the same configuration and produces the same effects as the sound-insulating structure 2 according to the third embodiment, but differs in that there is a gap between the upper end surface of the partition wall 30 and the ceiling underside 21, and this gap is closed by a ceiling-side sound-insulating surface material 40. Only the differences from the third embodiment will be described below.

[0070] 6, the first face material 31 is disposed so that its first lower end surface 31C abuts against the floor surface 13 and a gap (first upper gap G31) is provided between its first upper end surface 31B and the ceiling lower surface 21. Similarly, the second face material 32 is disposed so that its second lower end surface 32C abuts against the floor surface 13 and a gap (second upper gap G41) is provided between its second upper end surface 32B and the ceiling lower surface 21.

[0071] The ceiling-side sound-insulating panel material 40 is thicker than the first upper gap G31 and the second upper gap G41, is disposed on the ceiling underside 21 so as to close the first upper gap G31 and the second upper gap G41 from the hollow portion S3 side, and includes a portion with a greater surface density than the positioning member 60. Specifically, the ceiling-side sound-insulating panel material 40 includes a first panel material portion 48 having the same thickness as the first upper gap G31 and the second upper gap G41, and a second panel material portion 49 overlapping with the upper portions of the first panel material 31 and the second panel material 32 in the horizontal direction (the wall thickness direction of the partition wall 30). The second panel material portion 49 is a portion of the ceiling-side sound-insulating panel material 40 that is below the first upper end face 31B and the second upper end face 32B, and both side surfaces in the width direction of the first panel material portion 48 close the first upper gap G31 and the second upper gap G41 from the hollow portion S3 side.

[0072] The surface density of the second face material portion 49 is greater than the surface density of the positioning member 60. The surface density of the second face material portion 49 is preferably equal to or greater than the surface density of the first face material 31 and the surface density of the second face material 32, and is further preferably equal to or greater than the surface density of the ceiling material 20. On the other hand, the surface density of the first face material portion 48 is not particularly limited, and may be smaller than the surface density of the second face material portion 49 or may be the same as the surface density of the second face material portion 49.

[0073] The ceiling-side sound-insulating surface material 40 in this embodiment is, for example, but not limited to, iron powder solidified with asphalt sandwiched between nonwoven fabrics (asphalt-based vibration-damping material). Also, like in the first embodiment, the ceiling-side sound-insulating surface material 40 in this embodiment has a different coincidence frequency from the ceiling material 20, and it is preferable that the coincidence frequencies of the ceiling material 20 and the ceiling-side sound-insulating surface material 40 differ by 1 / 12 octave.

[0074] As shown in Figure 6, the positioning member 60 is placed facing downward below the ceiling-side sound-insulating panel material 40, and is fixed to the ceiling underside 21 together with the ceiling-side sound-insulating panel material 40 with fasteners such as screws. The upper ends of the studs 34 are inserted into the grooves of the positioning member 60. The positioning member 60 is also fixed directly to the floor surface 13 with fasteners such as screws.

[0075] According to the sound-insulating structure 3 of the fourth embodiment, the gaps between the first and second face materials 31 and 32 and the ceiling underside 21 are blocked by both side surfaces of the ceiling-side sound-insulating face material 40, thereby suppressing sound leakage through those gaps into the adjacent room. Moreover, because the ceiling-side sound-insulating face material 40 includes the second face material portion 49 that has a higher surface density than the positioning member 60, sound-insulating performance can be further improved compared to when the positioning member 60 is directly fixed to the ceiling underside 21 to block those gaps.

[0076] The ceiling-side sound-insulating surface material 40 is not limited to being made of asphalt-based vibration-damping material, but may be made of gypsum board, which has a higher surface density than the positioning member 60. The ceiling-side sound-insulating surface material 40 in the fourth embodiment may be used in combination with the floor-side sound-insulating surface material 41 in the third embodiment.

[0077] (Embodiment 5) Next, a sound-insulating structure 4 for a partition wall according to a fifth embodiment of the present invention (hereinafter also simply referred to as "sound-insulating structure 4") will be described with reference to Fig. 7. In addition to the configuration of the first embodiment, the sound-insulating structure 4 according to the fifth embodiment further includes a first ceiling-side sound-insulating panel material 45 and a second ceiling-side sound-insulating panel material 44. Differences from the first embodiment will be described below.

[0078] As shown in Fig. 7, the ceiling material 20 has a ceiling upper surface 22 facing the opposite side (towards the space above the ceiling) from the ceiling lower surface 21, and a plurality of joists 50 are arranged on the ceiling upper surface 22. In this embodiment, each joist 50 is arranged so that its length faces the wall surface of the partition wall 30 (the depth direction of the paper in Fig. 7).

[0079] The multiple siding members 50 are arranged at equal intervals in the horizontal direction (a direction perpendicular to the length direction of the siding members 50) on the ceiling upper surface 22. As shown in Fig. 7, the siding members 50 are arranged in portions of the ceiling upper surface 22 that are located above the first face member 31 and the second face member 32. In other words, the siding members 50 are arranged in positions on the ceiling upper surface 22 that overlap the first face member 31 and the second face member 32 in the vertical direction.

[0080] The first ceiling-side sound-insulating surface material 45 is attached to the ceiling material 20 at least in a region between a position 22A corresponding to the first outer surface 31A and a position 22B corresponding to the center of the first space S1 in the horizontal direction (wall thickness direction). More specifically, as shown in Fig. 7, the first ceiling-side sound-insulating surface material 45 is attached to the ceiling upper surface 22 in the space between one rafter 50 that overlaps the first surface material 31 in the vertical direction and another rafter 50 that is adjacent to the one rafter 50 on the first space S1 side. The "position corresponding to the first outer surface 31A" means a position of the ceiling material 20 that overlaps the first outer surface 31A in the vertical direction.

[0081] 7, the first ceiling-side sound-insulating surface material 45 in this embodiment is attached to the ceiling upper surface 22 in a part of the space between the first rafter 50 and the other rafter 50. In other words, the width W1 of the first ceiling-side sound-insulating surface material 45 is smaller than the distance between the first rafter 50 and the other rafter 50.

[0082] Furthermore, the end of the first ceiling-side sound-insulating surface material 45 on the partition wall 30 side is in contact with the side surface of the first rafter 50 (the side surface facing the other rafter 50). In other words, the center in the width direction of the first ceiling-side sound-insulating surface material 45 is located closer to the partition wall 30 (first outer surface 31A) than the center between the first rafter 50 and the other rafter 50.

[0083] The first ceiling-side sound-insulating surface material 45 has a different coincidence frequency from the ceiling material 20. Specifically, the first ceiling-side sound-insulating surface material 45 is made of gypsum board containing the same glass fiber nonwoven fabric as the first wall-side sound-insulating surface material 42 and the second wall-side sound-insulating surface material 43 described in the first embodiment, and has a coincidence frequency that is 1 / 12 octave different from that of the ceiling material 20.

[0084] The second ceiling-side sound-insulating surface material 44 is attached to the ceiling material 20 at least in a region between a position 22C corresponding to the second outer surface 32A and a position 22D corresponding to the center of the second space S2 in the horizontal direction (wall thickness direction). Specifically, as shown in Fig. 7, the second ceiling-side sound-insulating surface material 44 is attached to the ceiling upper surface 22 in the space between one rafter 50 that overlaps the second surface material 32 in the vertical direction and another rafter 50 that is adjacent to the first rafter 50 on the side of the second space S2. The "position corresponding to the second outer surface 32A" means a position of the ceiling material 20 that overlaps the second outer surface 32A in the vertical direction.

[0085] The second ceiling-side sound-insulating surface material 44 is attached to the ceiling upper surface 22 in part of the space between the first rafter 50 and the second rafter 50. That is, the width W2 of the second ceiling-side sound-insulating surface material 44 is smaller than the distance between the rafters. Furthermore, the end of the second ceiling-side sound-insulating surface material 44 on the partition wall 30 side is in contact with the side surface of the first rafter 50 (the side surface facing the second rafter 50). That is, the center in the width direction of the second ceiling-side sound-insulating surface material 44 is located closer to the partition wall 30 (second outer surface 32A) than the center between the first rafter 50 and the second rafter 50.

[0086] The second ceiling-side sound-insulating surface material 44 has a different coincidence frequency from the ceiling material 20. Specifically, the second ceiling-side sound-insulating surface material 44 is made of gypsum board containing the same glass fiber nonwoven fabric as the first wall-side sound-insulating surface material 42 and the second wall-side sound-insulating surface material 43 described in the first embodiment, and has a coincidence frequency that is 1 / 12 octave different from that of the ceiling material 20. Therefore, components can be shared among the first wall-side sound-insulating surface material 42, the second wall-side sound-insulating surface material 43, the first ceiling-side sound-insulating surface material 45, and the second ceiling-side sound-insulating surface material 44. In this embodiment, the second ceiling-side sound-insulating surface material 44 and the first ceiling-side sound-insulating surface material 45 are located closer to the partition wall 30 than the center between the joists 50 and another joist 50, but they may be located between the joists 50 and another joist 50, and are not limited to being located closer to the partition wall 30.

[0087] As described above, in the sound-insulating structure 4 according to the fifth embodiment, a surface material having a different coincidence frequency from that of the ceiling material 20 is attached to the ceiling material 20 in a position between a position corresponding to the outer surface of the partition wall 30 and a position corresponding to the horizontal center of the space. Therefore, when sound generated in one of the first space S1 and the second space S2 separated by the partition wall 30 attempts to propagate to the other space through the ceiling material 20 due to the coincidence effect, the coincidence effect of the ceiling material 20 can be suppressed. Therefore, sound leakage through the ceiling material 20 is suppressed, and sound-insulating performance can be improved.

[0088] (Embodiment 6) Next, a sound insulating structure 5 for a partition wall according to a sixth embodiment of the present invention (hereinafter also simply referred to as "sound insulating structure 5") will be described with reference to Figs. 8 to 10. The sound insulating structure 5 according to the sixth embodiment basically has the same configuration as the sound insulating structure 4 according to the fifth embodiment, but differs in that it includes a first exterior wall sound insulating panel material 73 (first wall sound insulating panel material) and a second exterior wall sound insulating panel material 74 (second wall sound insulating panel material) instead of the first ceiling sound insulating panel material 45 and the second ceiling sound insulating panel material 44. Only the differences from the fifth embodiment will be described below.

[0089] 8 is a horizontal cross-sectional view of the abutting portion (joint portion) between the partition wall 30 and the exterior wall 70. The soundproof structure 5 includes the exterior wall 70 extending in a direction intersecting (orthogonal to) the partition wall 30. As shown in FIG. 8, one end of the partition wall 30 in the wall surface direction abuts against the inner surface of the exterior wall 70.

[0090] The exterior wall 70 includes an exterior wall panel 71, an exterior wall facing material 72 arranged between the exterior wall panel 71 and the exterior wall panel 71 with a hollow space therebetween, and vertical beams 75 extending vertically in the hollow space. The exterior wall facing material 72 is, for example, gypsum board or the like, and includes an inner surface 72A facing the space S0 inside the building and a back surface 72B facing the opposite side (the hollow space side) from the inner surface 72A. The sound-insulating structure 5 includes a first exterior-wall sound-insulating face material 73 and a second exterior-wall sound-insulating face material 74 attached to the back surface 72B of the exterior wall facing material 72.

[0091] The first exterior wall sound-insulating surface material 73 is attached to a portion of the back surface 72B of the exterior wall surface material 72 between at least a position 72C corresponding to the first outer surface 31A and a position 72E corresponding to the horizontal center of the first space S1. Here, the "position corresponding to the first outer surface 31A" means a position on the back surface 72B of the exterior wall surface material 72 through which an extension line of the first outer surface 31A passes. The first exterior wall sound-insulating surface material 73 is made of gypsum board having a different coincidence frequency from that of the exterior wall surface material 72; specifically, the coincidence frequency is 1 / 12 octave different from that of the exterior wall surface material 72.

[0092] The second exterior wall sound-insulating surface material 74 is attached to the rear surface 72B of the exterior wall surface material 72 at least in a region between a position 72D corresponding to the second outer surface 32A and a position 72F corresponding to the horizontal center of the second space S2. Here, the "position corresponding to the second outer surface 32A" means a position on the rear surface 72B of the exterior wall surface material 72 through which an extension line of the second outer surface 32A passes. The second exterior wall sound-insulating surface material 74 has a different coincidence frequency from that of the exterior wall surface material 72; specifically, the coincidence frequency is 1 / 12 octave different from that of the exterior wall surface material 72.

[0093] Fig. 9 is a partial cross-sectional view of the sound-insulating structure 5 when the inner surface 72A of the exterior wall surface material 72 is viewed from the front. As shown in Fig. 9, the first exterior-wall sound-insulating surface materials 73 have a rectangular shape that is long in the vertical direction, and a plurality of them are arranged at intervals in the horizontal direction (the wall thickness direction of the partition wall 30). Similarly, the second exterior-wall sound-insulating surface materials 74 also have a rectangular shape that is long in the vertical direction, and are arranged at intervals in the horizontal direction.

[0094] In the soundproof structure 5 according to the fifth embodiment, an additional panel having a different coincidence frequency from that of the exterior wall panel 72 is attached to the exterior wall panel 72 at a location between a position corresponding to the outer surface of the partition wall 30 and a position corresponding to the horizontal center of the space S0. Therefore, when sound generated in one of the first space S1 and the second space S2 attempts to propagate to the other space via the exterior wall 70 due to the coincidence effect, the coincidence effect of the exterior wall panel 72 can be suppressed. Therefore, sound leakage to the adjacent space via the exterior wall 70 is suppressed, improving soundproofing performance.

[0095] The ends of the first exterior wall sound-insulating panel material 73 and the second exterior wall sound-insulating panel material 74 on the partition wall 30 side may further extend in the wall surface direction to a position where they overlap the partition wall 30. As shown in Fig. 10, the first exterior wall sound-insulating panel material 73 and the second exterior wall sound-insulating panel material 74 may have a rectangular shape that is long in the horizontal direction (in the wall thickness direction of the partition wall 30) and may be arranged in plurality at intervals in the vertical direction. The first exterior wall sound-insulating panel material 73 and the second exterior wall sound-insulating panel material 74 in embodiment 6 may be used in combination with the first ceiling-side sound-insulating panel material 45 and the second ceiling-side sound-insulating panel material 44 in embodiment 5.

[0096] (Other embodiments) Other embodiments of the present invention will now be described.

[0097] The first wall-side sound-insulating surface material 42 and the second wall-side sound-insulating surface material 43 are not limited to being staggered, and the first wall-side sound-insulating surface material 42 may be fixed continuously to each of two adjacent partition posts, or the second wall-side sound-insulating surface material 43 may be fixed continuously to each of two adjacent partition posts.

[0098] The gap G1 may be different in thickness from the second wall-side sound-insulating surface material 43, and the gap G2 may be different in thickness from the first wall-side sound-insulating surface material .

[0099] The first panel 31 and the second panel 32 may have different thicknesses, and the first wall-side sound-insulating panel 42 and the second wall-side sound-insulating panel 43 may have different thicknesses.

[0100] In FIG. 8, the wall intersecting the partition wall 30 is not limited to the exterior wall 70, but may be, for example, another partition wall.

[0101] The embodiments disclosed herein are illustrative in all respects and should not be construed as limiting. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0102] 1,1A,2,3,4,5 Sound insulation structure of partition walls 31 First surface material 32 Second surface material 34 Studs 42 First wall side soundproofing surface material (first soundproofing surface material) 43 Second wall side soundproofing surface material (second soundproofing surface material) G1, G2 gap S3 Hollow part

Claims

1. A first facing material; A second face material disposed between the first face material and the second face material with a hollow portion therebetween; A plurality of studs arranged in a horizontal direction in the hollow portion; a first sound-insulating surface material having a different coincidence frequency from the first surface material, a width smaller than the first surface material and a width larger than the partition wall, and sandwiched between the first surface material and the partition wall; a second sound-insulating surface material having a different coincidence frequency from the second surface material, a width smaller than the second surface material and a width larger than the partition wall, and sandwiched between the second surface material and the partition wall; The stud sandwiching the first sound-insulating surface material together with the first surface material is disposed with a gap between it and the second surface material, The stud that sandwiches the second sound-insulating surface material together with the second surface material is disposed with a gap between it and the first surface material, A sound-insulating structure of a partition wall, wherein the width of the first sound-insulating surface material is 60% or more of the width of the first surface material.

2. A first surface material, A second face material disposed between the first face material and the second face material with a hollow portion therebetween; A plurality of studs arranged in a horizontal direction in the hollow portion; a first sound-insulating surface material having a different coincidence frequency from the first surface material, a width smaller than the first surface material and a width larger than the partition wall, and sandwiched between the first surface material and the partition wall; a second sound-insulating surface material having a different coincidence frequency from the second surface material, a width smaller than the second surface material and a width larger than the partition wall, and sandwiched between the second surface material and the partition wall; The stud sandwiching the first sound-insulating surface material together with the first surface material is disposed with a gap between it and the second surface material, The stud that sandwiches the second sound-insulating surface material together with the second surface material is disposed with a gap between it and the first surface material, A sound-insulating structure of a partition wall, wherein the width of the second sound-insulating surface material is 60% or more of the width of the second surface material.

3. A sound insulation structure for a partition wall, A first facing material; A second face material disposed between the first face material and the second face material with a hollow portion therebetween; A plurality of studs arranged in a horizontal direction in the hollow portion; a first sound-insulating surface material having a different coincidence frequency from the first surface material, a width smaller than the first surface material and a width larger than the partition wall, and sandwiched between the first surface material and the partition wall; a second sound-insulating surface material having a different coincidence frequency from the second surface material, a width smaller than the second surface material and a width larger than the partition wall, and sandwiched between the second surface material and the partition wall; The stud sandwiching the first sound-insulating surface material together with the first surface material is disposed with a gap between it and the second surface material, The stud that sandwiches the second sound-insulating surface material together with the second surface material is disposed with a gap between it and the first surface material, The sound insulation structure of the partition wall is as follows: Flooring and A ceiling material that faces the floor material in a vertical direction; The sound-insulating structure of a partition wall further comprises at least one of a floor-side sound-insulating surface material that is attached to a portion of the floor material between the first surface material and the second surface material and has a different coincidence frequency from the floor material, and a ceiling-side sound-insulating surface material that is attached to a portion of the ceiling material between the first surface material and the second surface material and has a different coincidence frequency from the ceiling material.

4. A positioning member for positioning the stud is further provided, The first face material and the second face material are arranged such that their upper end surfaces abut against the ceiling material and a gap is provided between their lower end surfaces and the floor material, The floor-side sound-insulating surface material and the ceiling-side sound-insulating surface material are at least the floor-side sound-insulating surface material, 4. The sound insulation structure of a partition wall as described in claim 3, wherein the floor-side sound-insulating surface material is thicker than the gap and is arranged on the floor material so as to block the gap from the hollow portion side, and includes a portion having a greater surface density than the positioning member.

5. A positioning member for positioning the stud is further provided, The first face material and the second face material are arranged such that their lower end surfaces abut against the floor material and a gap is provided between their upper end surfaces and the ceiling material, The floor-side sound-insulating surface material and the ceiling-side sound-insulating surface material are at least the ceiling-side sound-insulating surface material, 4. The soundproofing structure of a partition wall as described in claim 3, wherein the ceiling-side soundproofing surface material is thicker than the gap and is arranged on the ceiling material so as to block the gap from the hollow portion side, and includes a portion having a greater surface density than the positioning member.

6. A sound insulation structure for a partition wall, A first facing material; A second face material disposed between the first face material and the second face material with a hollow portion therebetween; A plurality of studs arranged in a horizontal direction in the hollow portion; a first sound-insulating surface material having a different coincidence frequency from the first surface material, a width smaller than the first surface material and a width larger than the partition wall, and sandwiched between the first surface material and the partition wall; a second sound-insulating surface material having a different coincidence frequency from the second surface material, a width smaller than the second surface material and a width larger than the partition wall, and sandwiched between the second surface material and the partition wall; The stud sandwiching the first sound-insulating surface material together with the first surface material is disposed with a gap between it and the second surface material, The stud that sandwiches the second sound-insulating surface material together with the second surface material is disposed with a gap between it and the first surface material, The sound insulation structure of the partition wall is as follows: Flooring and Further comprising a ceiling material vertically opposed to the floor material, The first surface material and the second surface material constitute a partition wall that divides a space within a building into a first space and a second space that are adjacent to each other in a horizontal direction, The first surface member has a first outer surface facing the first space, The second surface member has a second outer surface facing the second space, The sound-insulating structure of the partition wall further comprises at least one of a first ceiling-side sound-insulating surface material having a different coincidence frequency from the ceiling material and attached to a portion of the ceiling material between at least a position corresponding to the first outer surface and a position corresponding to the horizontal center of the first space, and a second ceiling-side sound-insulating surface material having a different coincidence frequency from the ceiling material and attached to a portion of the ceiling material between at least a position corresponding to the second outer surface and a position corresponding to the horizontal center of the second space.

7. A sound insulation structure for a partition wall, A first facing material; A second face material disposed between the first face material and the second face material with a hollow portion therebetween; A plurality of studs arranged in a horizontal direction in the hollow portion; a first sound-insulating surface material having a different coincidence frequency from the first surface material, a width smaller than the first surface material and a width larger than the partition wall, and sandwiched between the first surface material and the partition wall; a second sound-insulating surface material having a different coincidence frequency from the second surface material, a width smaller than the second surface material and a width larger than the partition wall, and sandwiched between the second surface material and the partition wall; The stud sandwiching the first sound-insulating surface material together with the first surface material is disposed with a gap between it and the second surface material, The stud that sandwiches the second sound-insulating surface material together with the second surface material is disposed with a gap between it and the first surface material, The sound insulation structure of the partition wall is as follows: Flooring and Further comprising a ceiling material vertically opposed to the floor material, The first surface material and the second surface material constitute a partition wall that divides a space within a building into a first space and a second space that are adjacent to each other in a horizontal direction, The first surface member has a first outer surface facing the first space, The second surface member has a second outer surface facing the second space, The sound insulation structure of the partition wall is as follows: A wall extending in a direction intersecting the partition wall; A sound-insulating structure for a partition wall further comprising at least one of a first wall sound-insulating surface material having a different coincidence frequency from the wall and attached to a portion of the wall between at least a position corresponding to the first outer surface and a position corresponding to the horizontal center of the first space, and a second wall sound-insulating surface material having a different coincidence frequency from the wall and attached to a portion of the wall between at least a position corresponding to the second outer surface and a position corresponding to the horizontal center of the second space.

8. placing a plurality of studs in a horizontal arrangement; a step of attaching a first sound-insulating surface material having a width larger than that of the partition wall to one outer surface of the partition wall; attaching a second sound-insulating surface material having a width greater than that of the stud to the other outer surface of the stud; a step of fixing a first surface material from the outside of the first sound-insulating surface material so as to leave a gap between the first surface material and the stud to which the second sound-insulating surface material is attached; and a step of fixing a second panel from the outside of the second sound-insulating panel so as to leave a gap between the first sound-insulating panel and the stud to which the first sound-insulating panel is attached, The first sound-insulating surface material has a different coincidence frequency from the first surface material and is a surface material having a smaller width than the first surface material, A method for constructing a partition wall, wherein the second sound-insulating surface material has a different coincidence frequency from the second surface material and is a surface material having a smaller width than the second surface material.

Images