Sound insulation wall components and wall structure

Abstract

Provided are a sound insulation wall component and a wall structure that can easily configure a sound insulation wall having a main surface material while reliably suppressing transmission of vibrations generated in the main surface material supported by the support member to the support member. [Solution] A sound-insulating wall component 3 comprises a pair of support members 4 extending in a first direction D1 and spaced apart in a second direction D2 to support a main panel 2, a pair of elastic members 5 respectively provided on the side surfaces of the pair of support members 4 in a third direction D3, a pair of extension parts 7 each having a free end piece 71 positioned between the pair of support members 4, and auxiliary panel members 8 attached to the pair of extension parts 7 in a state covering the free end pieces 71. A member side surface 51 of the pair of elastic members 5 facing the main panel 2 side in the third direction D3 is arranged on the same plane as a panel side surface 81 of the auxiliary panel member 8 facing the main panel 2 side in the third direction D3.

Description

[Technical Field]

[0001] The present invention relates to a sound insulation wall component and a wall structure. [Background technology]

[0002] As a wall structure for a building, for example, Patent Document 1 discloses a partition wall. The partition wall disclosed in Patent Document 1 includes a reinforcement support attached to a stud for supporting an architectural interior board, and a horizontal joint reinforcement that can be engaged with the reinforcement support. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-297492 Summary of the Invention [Problem to be solved by the invention]

[0004] The partition wall disclosed in Patent Document 1 has a problem in that vibrations generated in the architectural interior board are transmitted to the studs. In other words, the partition wall disclosed in Patent Document 1 has room for improvement in terms of reliably suppressing vibrations generated in the architectural interior board and improving sound insulation performance.

[0005] An object of the present invention is to provide a sound-insulating wall component and a wall structure that can easily construct a sound-insulating wall having a main surface material while reliably suppressing the transmission of vibrations generated in the main surface material supported by the support member to the support member. [Means for solving the problem]

[0006] A sound-insulating-wall component according to a first aspect of the present invention is a sound-insulating-wall component for constructing a sound-insulating wall having a main surface material. This sound-insulating-wall component includes: a pair of support members extending in a first direction to support the main surface material and spaced apart in a second direction perpendicular to the first direction; a pair of elastic members provided on side surfaces of the pair of support members facing one of a third direction perpendicular to the first and second directions and having elastic portions with higher elasticity than the pair of support members; a pair of extension portions extending from one of the pair of support members to the other along the second direction and each having a free end located between the pair of support members; and auxiliary surface materials attached to the pair of extension portions across the pair of extension portions in a manner that opens the pair of elastic members in one of the third direction and covers the free ends of the pair of extension portions from one side of the third direction. The elastic portions have a predetermined allowable deformation distance that is a distance in the third direction within which elastic deformation is allowed. The side surfaces of the pair of elastic members facing one of the third directions are arranged on the same plane as the side surfaces of the auxiliary panel facing one of the third directions, or protrude from the side surfaces of the panel facing one of the third directions by a distance smaller than the deformation allowance distance.

[0007] According to the sound-insulating wall component of the first aspect, after the main panel is attached to the pair of support members via the member side surfaces of the pair of elastic members, the member side surfaces of the elastic members and the panel side surfaces of the auxiliary panel members are arranged in the same plane along the surface of the main panel. Here, the member side surfaces of the elastic members are in the same plane as the panel side surfaces of the auxiliary panel members or protrude from the panel side surfaces by a distance smaller than the allowable deformation distance. Therefore, when the main panel is attached to the support members, at least a portion of the allowable deformation distance of the elastic portion can remain. Therefore, when the main panel is attached, elastic deformation of the elastic portion in the third direction can be permitted, and this elastic deformation can suppress the transmission of vibration from the main panel to the support members.

[0008] Furthermore, in the sound-insulating wall component, the pair of extensions have free ends disposed between the pair of support members, and auxiliary panel members are attached to the extensions so as to cover the free ends and release the elastic members. Therefore, when the main panel is attached, the auxiliary panel members, which are in contact with the main panel, are allowed to vibrate relative to the support members, thereby reducing vibration at the coincidence frequency of the main panel members compared to when the auxiliary panel members are not present. Furthermore, combining the main panel members with the auxiliary panel members improves the surface density of the sound-insulating wall. While it is conceivable to attach the auxiliary panel members to the main panel members in advance to reduce vibration at the coincidence frequency of the main panel members, this approach requires lifting the main panel members with the auxiliary panel members attached to the support members, which reduces workability. In contrast, the above-described configuration allows the auxiliary panel members to rest on the support members via the extensions, making it easy to construct a sound-insulating wall.

[0009] Furthermore, when a main panel with auxiliary panel members is attached to a pair of support members via the member side surfaces of a pair of elastic members, the entire main panel with auxiliary panel members is positioned outward from the member side surfaces of the elastic members, resulting in a thicker wall in the sound insulating wall formed by the main panel with auxiliary panel members. In contrast, with the above-described configuration, the auxiliary panel members are attached to the free ends of the extensions disposed between the pair of support members so as to open the elastic members. In this case, after the main panel members are attached to the pair of support members via the member side surfaces of the pair of elastic members, the member side surfaces of the elastic members and the panel side surfaces of the auxiliary panel members are positioned flush with each other along the surface of the main panel member, and the auxiliary panel members are positioned more inward than the main panel members with respect to the member side surfaces of the elastic members, thereby preventing the wall thickness of the sound insulating wall from becoming thicker in the portion positioned outward from the member side surfaces of the elastic members.

[0010] The sound-insulating-wall component according to the second aspect may be the sound-insulating-wall component according to the first aspect, further comprising a sound-absorbing material attached to the pair of extension portions across the pair of extension portions in a state covering the pair of extension portions from the other of the third direction.

[0011] According to the sound-insulating wall component of the second aspect, the pair of extensions for attaching the auxiliary surface material can also be used as portions for holding the sound-absorbing material.

[0012] A sound-insulating-wall component according to a third aspect may be the sound-insulating-wall component of the first or second aspect, further comprising a positioning member having a base portion covering the ends of the pair of support members from one side in the first direction, and an upright portion rising from the base portion in the first direction so as to restrict movement of the base portion in one side in the third direction. In this case, a side surface of the upright portion facing one side in the third direction is arranged on the same plane as a side surface of the panel material.

[0013] According to the sound-insulating wall component of the third aspect, the side surface of the erected portion of the positioning member and the side surface of the panel of the auxiliary panel are arranged on the same plane, so that when the main panel is attached to the support member in a state that covers the erected portion and auxiliary panel from one side in the third direction, unevenness in the main panel can be prevented.

[0014] A wall structure according to a fourth aspect comprises a main surface material and a sound-insulating-wall-constituting member according to any one of the first to third aspects for constituting a sound-insulating wall having the main surface material.

[0015] According to the wall structure of the fourth aspect, since the wall structure is provided with the sound-insulating wall-constituting member described above, it is possible to easily construct a wall structure that can improve sound-insulating performance. [Effects of the Invention]

[0016] As described above, according to the present invention, it is possible to provide a sound-insulating wall component and a wall structure that can easily construct a sound-insulating wall having a main surface material while reliably suppressing the transmission of vibrations generated in the main surface material supported by the support member to the support member. [Brief explanation of the drawings]

[0017] [Figure 1]1 is a perspective view of a wall structure to which a sound-insulating-wall component according to an embodiment of the present invention is applied. [Figure 2] FIG. 2 is a cross-sectional view of the sound-insulating wall component taken along line II-II in FIG. 1. [Figure 3] FIG. 2 is a cross-sectional view showing a state before main surface materials are attached to a pair of support members in a sound-insulating wall component. [Figure 4] 10 is a cross-sectional view showing a modified example of an extension portion provided on a sound-insulating wall component. FIG. [Figure 5] FIG. 10 is a perspective view for explaining the construction procedure of the wall structure, showing the state in which the extension portion is attached to the support member. [Figure 6] FIG. 10 is a perspective view for explaining the construction procedure of the wall structure, showing the state in which the sound-absorbing material is attached to the extension portion and the elastic member is attached to the support member. [Figure 7] FIG. 10 is a perspective view for explaining the construction procedure of the wall structure, showing the state in which the auxiliary surface material has been attached to the extension portion. [Figure 8] FIG. 10 is a perspective view for explaining the construction procedure of the wall structure, showing the state in which the main surface material is attached to the support member so as to cover the auxiliary surface material. [Figure 9] FIG. 10 is a perspective view of a wall structure to which a sound-insulating-wall component according to a modified embodiment is applied. [Figure 10] FIG. 10 is a cross-sectional view of the sound-insulating wall component taken along line XX in FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the following embodiments are examples that embody the present invention and are not intended to limit the technical scope of the present invention. In addition, the following directional relationships will be described using a first direction D1, a second direction D2, and a third direction D3 that are perpendicular to one another. The first direction D1 is the up-down direction perpendicular to a horizontal plane, and the second direction D2 and the third direction D3 are directions that are perpendicular to one another on the horizontal plane.

[0019] Fig. 1 is a perspective view of a wall structure 1 to which a sound-insulating-wall component 3 according to an embodiment of the present invention is applied. Fig. 2 is a cross-sectional view of the sound-insulating-wall component 3. Fig. 3 is a cross-sectional view showing the sound-insulating-wall component 3 in a state before main surface members 2 are attached to a pair of support members 4. The wall structure 1 is applied, for example, to the construction of a partition wall that divides the space between the floor and ceiling of a building into a first room and a second room. The wall structure 1 comprises the main surface member 2 and a sound-insulating-wall component 3 for constructing a sound-insulating wall having the main surface member 2.

[0020] The main surface materials 2 are made of, for example, gypsum board. In the wall structure 1, a plurality of main surface materials 2 are arranged side by side in a second direction D2 perpendicular to the first direction D1 so as to form joints 2A extending in the first direction D1. In addition, in the wall structure 1, two rows of main surface materials 2 are provided spaced apart in a third direction D3 perpendicular to the first direction D1 and the second direction D2. In this case, the main surface materials 2 in one of the two rows of main surface materials 2 are provided so as to face a first room in the building, and the main surface materials 2 in the other row are provided so as to face a second room in the building.

[0021] The sound-insulating-wall component 3 is a structure for constructing a sound-insulating wall having main surface materials 2. The sound-insulating-wall component 3 includes a pair of support members 4 for supporting the main surface materials 2 in each row spaced apart in the third direction D3, a pair of elastic members 5, a pair of extension portions 7, auxiliary surface materials 8, sound-absorbing materials 9, and a pair of runners 10.

[0022] In the following description, when the main surface materials 2 in each row arranged at a distance in the third direction D3 are attached to a pair of support members 4, the direction from the support members 4 toward the main surface materials 2 will be referred to as "one side of the third direction D3," and the direction from the main surface materials 2 toward the support members 4 will be referred to as "the other side of the third direction D3."

[0023] The pair of runners 10 are made of, for example, steel. The pair of runners 10 are frame-shaped positioning members that extend in the second direction D2 along the ceiling and floor of the building and are spaced apart in the first direction D1, and each hold the ends of the pair of support members 4 in the first direction D1. Each of the pair of runners 10 has a base 101 that extends in the second direction D2 and a pair of upright portions 102 that extend in the first direction D1 from both ends of the base 101 in the third direction D3, which is the width direction of the base 101.

[0024] Of the pair of runners 10 spaced apart in the first direction D1, the runner 10 arranged on the upper side in the first direction D1 has a base 101 that covers the upper ends of the pair of support members 4 from above, and a pair of standing portions 102 that extend downward in the first direction D1 from the base 101 so as to restrict movement of the base 101 in the third direction D3. In this upper runner 10, the upper end of the main surface material 2 in the first direction D1 abuts against a standing portion side surface 1021 of the pair of standing portions 102 that faces one of the main surface materials 2 in the third direction D3.

[0025] Of the pair of runners 10 spaced apart in the first direction D1, the runner 10 arranged on the lower side in the first direction D1 has a base 101 covering the lower ends of the pair of support members 4 from below, and a pair of standing portions 102 extending upward from the base 101 in the first direction D1 so as to restrict movement of the base 101 in the third direction D3. In this lower runner 10, the lower end of the main surface material 2 in the first direction D1 abuts against a standing portion side surface 1021 of the pair of standing portions 102 facing one of the main surface materials 2 in the third direction D3.

[0026] Between a pair of runners 10 spaced apart in the first direction D1, a pair of support members 4 extending in the first direction D1 and spaced apart in the second direction D2 are erected to support the main surface materials 2. Each of the pair of support members 4 is made of, for example, steel. The pair of support members 4 is a common support member 4 configured to commonly support each row of main surface materials 2 spaced apart in the third direction D3. Note that the pair of support members 4 may also be individual support members 4 configured to individually support each row of main surface materials 2 spaced apart in the third direction D3. The cross-sectional shape of the pair of support members 4 is not particularly limited, and may be, for example, a C-shaped cross-sectional shape.

[0027] The pair of support members 4 support the main face material 2 on their side surfaces facing one of the main face materials 2 in the third direction D3. One side surface of the pair of support members 4 in the third direction D3 has an edge support side surface that supports the edge portions along the joints 2A of the two main face materials 2 adjacent in the second direction D2, and a remaining portion support side surface that supports the remaining portions of the main face materials 2 other than the edge portions.

[0028] A pair of elastic members 5 are provided between the main panel 2 and the pair of support members 4 in the third direction D3. The pair of elastic members 5 are provided on each side of the pair of support members 4 facing one of the main panel 2 sides in the third direction D3. That is, the elastic members 5 are provided on the edge support side and the remaining portion support side of the pair of support members 4. The pair of elastic members 5 extend in the first direction D1 from one side of the pair of support members 4 in the third direction D3 across the pair of runners 10. The pair of elastic members 5 are members having elastic portions 50 with a lower elastic modulus (Young's modulus) and higher elasticity than the main panel 2 and the support members 4, and are made of, for example, elastic polyurethane material, rubber material, or polyethylene material with closed cells. The elastic portions 50 have a predetermined allowable deformation distance as the distance in the third direction D3 at which elastic deformation is allowed. The pair of elastic members 5 suppress vibration transmission between the main panel 2 and the support members 4 by elastic deformation of the elastic portions 50 in the third direction D3 based on the allowable deformation distance.

[0029] As shown in FIG. 2 , a connecting member 6 is provided on the elastic member 5 provided on the edge support side surfaces of a pair of support members 4 so as to cover a member side surface 51 of the elastic member 5 facing one of the main face members 2 in the third direction D3. The connecting member 6 extends in the first direction D1 across the pair of runners 10, covering the member side surface 51 of the elastic member 5, between the edge along the joint 2A of two adjacent main face members 2 in the second direction D2 and the elastic member 5 provided on the edge support side surfaces of the pair of support members 4. The connecting member 6 has a protruding portion 61 that protrudes toward the one of the main face members 2 in the third direction D3 and extends in the first direction D1. The connecting member 6 is provided so that the protruding portion 61 is inserted into the joint 2A of two adjacent main face members 2 in the second direction D2. In this case, the protruding portion 61 of the connecting member 6 is contained within the joint 2A and is restricted from protruding outward from the main face member 2. Furthermore, the provision of the protruding portion 61 increases the moment of inertia of the connecting member 6, thereby increasing the rigidity of the connecting member 6 itself. Note that the connecting member 6 may not have the protruding portion 61 in some cases.

[0030] The edges along the joint 2A of two adjacent main surface members 2 in the second direction D2 are fixed to the edge support side surfaces of the pair of support members 4 by screw members SC, with elastic members 5 and connecting members 6 interposed therebetween. In this case, the edges along the joint 2A of two adjacent main surface members 2 in the second direction D2 can be connected to each other by the connecting members 6 through which the screw members SC pass together with the elastic members 5, thereby restricting relative movement of the edges of each main surface member 2 and preventing unevenness from occurring in the sound insulation wall formed by each main surface member 2.

[0031] Meanwhile, the remaining portions of the main surface material 2 other than the edge portions are fixed to the remaining portion supporting side surfaces of the pair of support members 4 by an adhesive layer AD made of an adhesive, with the elastic member 5 interposed therebetween. In this case, the main surface material 2 can be fixed to the support members 4 with the screw members SC, which could serve as a vibration propagation path, removed between the remaining portions of the main surface material 2 other than the edge portions and the support members 4. This makes it possible to effectively suppress vibration transmission between the remaining portions of the main surface material 2 other than the edge portions and the support members 4. The adhesive layer AD is formed by applying adhesive in dots to the remaining portion supporting side surfaces of the pair of support members 4, or by attaching a tape-like material coated with adhesive.

[0032] Furthermore, a pair of extension portions 7 are provided on each side surface of the pair of support members 4 facing one of the main surface members 2 in the third direction D3. That is, the pair of extension portions 7 are provided on each side surface of the pair of support members 4 in the third direction D3. Multiple pairs of extension portions 7 may be arranged for each pair of support members 4, spaced apart in the first direction D1. Each pair of extension portions 7 has a flat extension portion main body 70 that contacts one of the side surfaces of the pair of support members 4 in the third direction D3, and a pair of free end pieces 71 that extend from the extension portion 7 to both sides in the second direction D2. One of the pair of free end pieces 71 is located between the pair of support members 4 in the second direction D2. The pair of elastic members 5 are provided on one side surface of the pair of support members 4 in the third direction D3 so as to cover the extension portion main body 70 of the pair of extension portions 7.

[0033] Auxiliary panel materials 8 are attached to the free end pieces 71 of the pair of extension portions 7. The auxiliary panel material 8 is made of, for example, gypsum board, similar to the main panel material 2. The auxiliary panel material 8 is attached to the free end pieces 71 across the pair of extension portions 7 in a state in which the pair of elastic members 5 are open to the side of one of the main panel materials 2 in the third direction D3 and the auxiliary panel material 8 covers the free end pieces 71 of the pair of extension portions 7 from one side in the third direction D3. The auxiliary panel material 8 is attached to the free end pieces 71 of the pair of extension portions 7 by, for example, screw members SC.

[0034] As shown in FIG. 3 , before the main panel 2 is attached to the pair of support members 4, when the auxiliary panel 8 is attached to the free end pieces 71 of the pair of extension portions 7, the member side surface 51 of the pair of elastic members 5 facing one of the main panel 2 sides in the third direction D3 is arranged on the same plane as the panel side surface 81 of the auxiliary panel 8 facing one of the main panel 2 sides in the third direction D3. Alternatively, the member side surface 51 of the pair of elastic members 5 protrudes from the panel side surface 81 of the auxiliary panel 8 toward one side of the third direction D3 by a distance smaller than the allowable deformation distance of the elastic portion 50. When the connecting member 6 covers the member side surface 51 of the elastic member 5, the upper limit of the allowable protrusion distance when the member side surface 51 of the elastic member 5 protrudes from the panel side surface 81 of the auxiliary panel 8 is set to, for example, the thickness of the auxiliary panel 8 minus the remaining thickness of the elastic portion 50. The remaining thickness of the elastic portion 50 is the sum of the thickness of the elastic member 5 and the thickness of the connecting member 6.

[0035] In the sound-insulating wall component 3, after the main panel 2 is attached to the pair of support members 4 via the member side surfaces 51 of the pair of elastic members 5, the member side surfaces 51 of the elastic members 5 and the panel side surfaces 81 of the auxiliary panel members 8 are arranged in the same plane along the surface of the main panel 2. When the connecting members 6 cover the member side surfaces 51 of the elastic members 5, the surface of the connecting members 6 facing one side of the third direction D3 is arranged in the same plane as the panel side surfaces 81 of the auxiliary panel members 8. Here, before the main panel 2 is attached to the pair of support members 4, the member side surfaces 51 of the elastic members 5 are in the same plane as the panel side surfaces 81 of the auxiliary panel members 8 or protrude from the panel side surfaces 81 by a distance smaller than the allowable deformation distance of the elastic portions 50. Therefore, when the main panel 2 is attached to the support members 4, at least a portion of the allowable deformation distance of the elastic portions 50 can remain. Therefore, with the main surface material 2 attached, elastic deformation of the elastic portion 50 in the third direction D3 can be permitted, and this elastic deformation can suppress the transmission of vibration from the main surface material 2 to the support member 4.

[0036] Furthermore, in the sound-insulating wall component 3, the pair of extensions 7 have free end pieces 71 disposed between the pair of support members 4, and the auxiliary panel 8 is attached to the extensions 7 so as to cover the free end pieces 71 and release the elastic member 5. Therefore, when the main panel 2 is attached, the auxiliary panel 8, which is in contact with the main panel 2, is allowed to vibrate relative to the support member 4. This allows vibration of the main panel 2 at the coincidence frequency to be suppressed compared to when the auxiliary panel 8 is not present. Furthermore, combining the main panel 2 and the auxiliary panel 8 improves the surface density of the sound-insulating wall. While it may be possible to suppress vibration propagation at the coincidence frequency of the main panel 2 by, for example, attaching the auxiliary panel 8 to the main panel 2 in advance, this would require lifting the main panel 2 with the auxiliary panel 8 attached to it and attaching it to the support member 4, which reduces workability. In contrast, with the above-described configuration, the auxiliary panel 8 can be placed on the support member 4 via the extensions 7, making it easy to construct a sound-insulating wall having the main panel 2.

[0037] Furthermore, when the main panel material 2 with the auxiliary panel material 8 is attached to the pair of support members 4 via the member side surfaces 51 of the pair of elastic members 5, the entire main panel material 2 with the auxiliary panel material 8 is positioned outward from the member side surfaces 51 of the elastic members 5, which results in a thicker wall in the sound insulating wall formed by the main panel material 2 with the auxiliary panel material 8 at the portion positioned outward from the member side surfaces 51 of the elastic members 5. In contrast, with the above configuration, the auxiliary panel material 8 is attached to the free end piece 71 of the extension portion 7 positioned between the pair of support members 4 so as to open the elastic members 5. In this case, after the main panel material 2 is attached to the pair of support members 4 via the member side surfaces 51 of the pair of elastic members 5, the member side surfaces 51 of the elastic members 5 and the panel side surfaces 81 of the auxiliary panel material 8 are positioned on the same plane along the surface of the main panel material 2, and the auxiliary panel material 8 is positioned more inward than the main panel material 2 with respect to the member side surfaces 51 of the elastic members 5, which prevents the wall thickness of the sound insulating wall at the portion positioned outward from the member side surfaces 51 of the elastic members 5.

[0038] 2, an end portion of the main surface material 2 in the first direction D1 abuts against a standing portion side surface 1021 of a pair of standing portions 102 in the pair of runners 10, the standing portion side surface 1021 facing one of the main surface materials 2 in the third direction D3. The standing portion side surface 1021 of the standing portions 102 in this pair of runners 10 is arranged on the same plane as the surface material side surface 81 of the auxiliary surface material 8. In this case, when the main surface material 2 is attached to the support member 4 in a state covering the standing portions 102 and the auxiliary surface material 8 of the pair of runners 10 from one side in the third direction D3, it is possible to prevent unevenness from occurring in the main surface material 2 whose end portion in the first direction D1 abuts against the standing portion side surface 1021.

[0039] 2, the sound-insulating-wall component 3 may also include a sound-absorbing material 9. The sound-absorbing material 9 is attached to the free end pieces 71 of the pair of extension parts 7 across the pair of extension parts 7 in a state where it covers the free end pieces 71 of the pair of extension parts 7 from the other support member 4 side in the third direction D3. In this case, the pair of extension parts 7 for attaching the auxiliary surface material 8 can also be used as parts for holding the sound-absorbing material 9.

[0040] 4 is a cross-sectional view showing a modified example of a pair of extension portions 7 provided in the sound-insulating-wall component 3. The pair of extension portions 7 may have extension pieces 72 in addition to an extension portion main body 70 and a free end piece 71. The extension piece 72 extends from the extension portion main body 70 in the second direction D2 so as to be spaced apart from the free end piece 71 in the third direction D3. The extension piece 72 may extend from the extension portion main body 70 to both sides in the second direction D2, or may extend from the extension portion main body 70 to one side in the second direction D2. The pair of extension portions 7 can clamp the end of the auxiliary panel 8 in the second direction D2 between the free end piece 71 and the extension piece 72.

[0041] The construction procedure for the wall structure 1 will be described with reference to Figures 5 to 8. First, as shown in Figure 5, a pair of extension portions 7 is attached to a pair of support members 4 erected between a pair of runners 10. In this case, multiple pairs of extension portions 7 may be attached to the pair of support members 4 at intervals in the first direction D1.

[0042] Next, as shown in Fig. 6, a pair of elastic members 5 are attached to the pair of support members 4, and sound-absorbing materials 9 are attached to the pair of extension portions 7. Next, as shown in Fig. 7, auxiliary surface members 8 are attached to the pair of extension portions 7. With the auxiliary surface members 8 attached to the pair of extension portions 7, adhesive is applied in dots to one surface of the auxiliary surface member 8 in the third direction D3 to form an adhesive layer AD. Also, adhesive is applied in dots to the elastic members 5 attached to the remainder portion supporting side surface that supports the remainder portion of the main surface member 2 other than the edge portions on one side surface of the pair of support members 4 in the third direction D3 to form an adhesive layer AD.

[0043] Next, as shown in FIG. 8 , the main face materials 2 are attached to the pair of support members 4 so as to cover the auxiliary face material 8. In this case, the edge portions of the two main face materials 2 adjacent in the second direction D2 along the joint 2A are fixed to the edge-supporting side surfaces of the pair of support members 4 with the screw members SC interposed between them, with the elastic members 5 and the connecting members 6 interposed between them. In this case, the edge portions of the two main face materials 2 adjacent in the second direction D2 along the joint 2A can be connected to each other by the elastic members 5 and the connecting members 6 through which the screw members SC pass. This restricts relative movement of the edge portions of each main face material 2 and prevents unevenness from occurring in the sound insulating wall formed by the main face materials 2. Meanwhile, the remaining portions of the main face materials 2 other than the edge portions are fixed to the remaining-portion-supporting side surfaces of the pair of support members 4 with the elastic members 5 interposed between them with the adhesive layers AD.

[0044] When the main surface material 2 is attached to a pair of support members 4 so as to cover the auxiliary surface material 8, the auxiliary surface material 8 can be left on the support members 4 via a pair of extension portions 7, making it easy to construct a sound-insulating wall having the main surface material 2.

[0045] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the following modified embodiment may be adopted.

[0046] Fig. 9 is a perspective view of a wall structure 1 to which a sound-insulating-wall-constituting member 3 according to a modified embodiment is applied, and Fig. 10 is a cross-sectional view of the sound-insulating-wall-constituting member 3. The sound-insulating-wall-constituting member 3 according to the modified embodiment is the same as the above-described embodiment except for the configuration of the pair of extension portions 7A. Therefore, in the sound-insulating-wall-constituting member 3 according to the modified embodiment, descriptions of the same parts as those in the above-described embodiment will be omitted, and the configuration of the pair of extension portions 7A will be described in detail.

[0047] The pair of extension portions 7A are provided on the surfaces of the pair of support members 4 facing the second direction D2, respectively. In this case, the pair of extension portions 7A may be provided on the surfaces of the pair of support members 4 facing the second direction D2 with a spacer or the like interposed therebetween. Furthermore, multiple pairs of extension portions 7A may be arranged for the pair of support members 4 at a distance from each other in the first direction D1.

[0048] The pair of extension portions 7A have flat extension portion bodies 70 that contact the surfaces of the pair of support members 4 facing the second direction D2, and a pair of free end pieces 71 that extend from the extension portions 7A to one side in the second direction D2 and are spaced apart in the third direction D3. The pair of free end pieces 71 are located between the pair of support members 4 in the second direction D2 and are located on the other side in the third direction D3 of the side surface of the pair of support members 4 that faces one of the main surface materials 2 in the third direction D3.

[0049] Auxiliary surface materials 8 are attached to the free end pieces 71 of the pair of extension portions 7A. The auxiliary surface materials 8 are attached to the free end pieces 71 across the pair of extension portions 7A in a state in which they release the pair of elastic members 5 provided on the side surfaces of the pair of support members 4 on one side of the main surface material 2 in the third direction D3 and cover the free end pieces 71 of the pair of extension portions 7A from one side in the third direction D3.

[0050] Before the main surface materials 2 are attached to the pair of support members 4, and with the auxiliary surface materials 8 attached to the free end pieces 71 of the pair of extension portions 7A, the member side surfaces 51 of the pair of elastic members 5 facing one of the main surface materials 2 in the third direction D3 are arranged on the same plane as the panel side surfaces 81 of the auxiliary surface materials 8 facing one of the main surface materials 2 in the third direction D3. Alternatively, the member side surfaces 51 of the pair of elastic members 5 protrude from the panel side surfaces 81 of the auxiliary surface materials 8 toward one of the third direction D3 by a distance smaller than the allowable deformation distance of the elastic portions 50. This allows elastic deformation of the elastic portions 50 in the third direction D3 when the main surface materials 2 are attached, and this elastic deformation can suppress the transmission of vibration from the main surface material 2 to the support members 4.

[0051] Furthermore, in the sound-insulating wall component 3, the pair of extension portions 7A have free end pieces 71 arranged between the pair of support members 4, and the auxiliary panel 8 is attached to the extension portion 7A so as to cover the free end pieces 71 and release the elastic member 5. Therefore, when the main panel 2 is attached, the auxiliary panel 8 in contact with the main panel 2 is allowed to vibrate relative to the support member 4, and this makes it possible to suppress vibration of the main panel 2 at the coincidence frequency compared to when the auxiliary panel 8 is not present.

[0052] Furthermore, when the main surface material 2 is attached to a pair of support members 4 so as to cover the auxiliary surface material 8, the auxiliary surface material 8 can be left on the support members 4 via a pair of extension portions 7A, making it easy to construct a sound-insulating wall having the main surface material 2. [Explanation of symbols]

[0053] 1 Wall structure 2 Main surface material 3 Sound barrier components 4 Support member 5 Elastic member 50 Elastic part 51 Side of component 7,7A extension part 70 Extension body 71 Free end piece 8 Auxiliary surface material 81 Side of surface material 9. Sound-absorbing materials 10 Runner (positioning member) 101 Base 102 Standing section 1021 Side of the erection

Claims

1. A sound insulation wall component for constructing a sound insulation wall having a plurality of main surface materials arranged side by side in a second direction perpendicular to a first direction so as to form joints extending in the first direction, a pair of support members extending in the first direction and spaced apart from each other in the second direction to support the main surface material; a pair of elastic members provided on side surfaces of the pair of support members facing one side in a third direction perpendicular to the first direction and the second direction, the elastic members having elastic portions having higher elasticity than the pair of support members; a pair of extension portions each extending from one of the pair of support members to the other along the second direction and each having a free end located between the pair of support members; an auxiliary surface material attached to the pair of extension portions across the pair of extension portions in a state in which the pair of elastic members are opened in one direction of the third direction and the free ends of the pair of extension portions are covered from one direction of the third direction; The pair of support members have, on one side surface in the third direction, an edge support side surface that supports the edge portions along the joints of the two main face materials adjacent to each other in the second direction, and a remaining portion support side surface that supports the remaining portion of the main face materials other than the edge portions, the elastic portion has a predetermined allowable deformation distance as a distance in the third direction in which elastic deformation is allowed, A sound-insulating wall component in which, before the main panel is attached to the edge support side surfaces and the remaining portion support side surfaces of the pair of support members via specified mounting portions, the member side surfaces of the pair of elastic members facing one of the third directions are arranged on the same plane as the panel side surfaces of the auxiliary panel materials facing one of the third directions, or protrude from the panel side surfaces toward one of the third directions by a distance smaller than the allowable deformation distance.

2. 2. The sound-insulating wall component according to claim 1, further comprising a sound-absorbing material attached to the pair of extension portions across the pair of extension portions in a state covering the pair of extension portions from the other of the third directions.

3. a positioning member having a base portion covering the ends of the pair of support members from one side in the first direction, and an upright portion standing upright from the base portion in the first direction so as to restrict movement of the base portion toward one side in the third direction, 2. The sound-insulating wall component according to claim 1, wherein a side surface of the erected portion facing one of the third directions is disposed on the same plane as the side surface of the panel.

4. A main surface material; A wall structure comprising: a sound-insulating wall component according to any one of claims 1 to 3 for constituting a sound-insulating wall having the main surface material.

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