Sound insulation wall constituent member and wall structure

Abstract

Provided are a sound insulation wall constituent member and a wall structure which make it possible to easily constitute a sound insulation wall having a main surface member supported by a support member while assuredly suppressing transmission of vibration generated in the main surface member to the support member.　A sound insulation wall constituent member (3) comprises: a pair of support members (4) that extend in a first direction (D1) and are disposed apart from each other in a second direction (D2) to support main surface members (2); a pair of elastic members (5) that are provided on lateral surfaces of each of the pair of support members (4) in a third direction (D3); a pair of extension parts (7) that have free end pieces (71) positioned between the pair of support members (4); and auxiliary surface members (8) that are attached to the pair of extension parts (7) in a state of covering the free end pieces (71). A member lateral surface (51) of each of the pair of elastic members (5) that faces the corresponding main surface member (2) side in the third direction (D3) is disposed on the same plane as a surface-member lateral surface (81) of the corresponding one of the auxiliary surface members (8) that faces the main surface member (2) side in the third direction (D3).

Description

Sound insulation wall component and wall structure

[0006] ,

[0005] ,

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

[0002] As a wall structure of a building, for example, a partition wall is disclosed in Patent Document 1. The partition wall disclosed in Patent Document 1 includes a reinforcing member support for attaching to a stud for supporting an architectural interior board, and a horizontal joint reinforcing member that can be locked to the reinforcing member support.

[0003] In the partition wall disclosed in Patent Document 1, there is a problem that vibrations generated in the architectural interior board are transmitted to the stud. That is, in the partition wall disclosed in Patent Document 1, there is room for improvement in reliably suppressing vibrations generated in the architectural interior board and improving sound insulation performance.

[0004] Japanese Patent Application Laid-Open No. 2000-297492

[0005] An object of the present invention is to provide a sound insulation wall component and a wall structure capable of easily constructing a sound insulation wall having a main surface material while reliably suppressing the transmission of vibrations generated in the main surface material supported by a support member to the support member.

[0006] A sound-insulating wall component according to one aspect of the present invention is a sound-insulating wall component for forming a sound-insulating wall having a main surface material. This sound-insulating wall component comprises: a pair of support members extending in a first direction and spaced apart in a second direction perpendicular to the first direction to support the main surface material; a pair of elastic members provided on the sides of the pair of support members facing one of the first and second directions and a third direction perpendicular to the second direction, each having an elastic portion having higher elasticity than the pair of support members; a pair of extensions extending from one of the pair of support members toward the other along the second direction and each having a free end located between the pair of support members; and an auxiliary surface material attached to the pair of extensions across the pair of extensions, such that the pair of elastic members are open to one of the third directions and the free ends of the pair of extensions are covered from one of the third directions. The elastic portion has a deformation tolerance distance that is set in advance as the distance in the third direction over which elastic deformation is permitted. The side surfaces of the pair of elastic members facing one of the third directions are arranged on the same plane as the side surface of the auxiliary surface material facing one of the third directions, or they protrude from the side surface material by a distance smaller than the allowable deformation distance toward one of the third directions.

[0007] A wall structure according to another aspect of the present invention comprises a main surface material and sound-insulating wall components for forming a sound-insulating wall having the main surface material.

[0008] As described above, the present invention provides a sound-insulating wall component and 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.

[0009] This 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. This is a cross-sectional view of the sound-insulating wall component along the line II-II in Figure 1. This is a cross-sectional view showing the state before the main surface material is attached to a pair of support members in the sound-insulating wall component. This is a cross-sectional view showing a modified example of an extension provided in the sound-insulating wall component. This is a perspective view for explaining the construction procedure of a wall structure, showing the state in which the extension material is attached to the support members. This is a perspective view for explaining the construction procedure of a wall structure, showing the state in which sound-absorbing material is attached to the extension material and elastic members are attached to the support members. This is a perspective view for explaining the construction procedure of a wall structure, showing the state in which auxiliary surface material is attached to the extension material. This is a perspective view for explaining the construction procedure of a wall structure, showing the state in which the main surface material is attached to the support members so as to cover the auxiliary surface material. This is a perspective view of a wall structure to which a sound-insulating wall component according to a modified embodiment is applied. This is a cross-sectional view of the sound-insulating wall component along the line X-X in Figure 9.

[0010] Embodiments of the present invention will be described below with reference to the attached drawings. Note that the following embodiments are examples that embody the present invention and do not limit the technical scope of the present invention. Furthermore, in the following description, the directional relationships will be explained using the mutually orthogonal first direction D1, second direction D2, and third direction D3. The first direction D1 is the vertical direction perpendicular to the horizontal plane, and the second direction D2 and third direction D3 are mutually orthogonal directions on the horizontal plane.

[0011] Figure 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. Figure 2 is a cross-sectional view of the sound-insulating wall component 3. Figure 3 is a cross-sectional view showing the state of the sound-insulating wall component 3 before the main surface material 2 is attached to a pair of support members 4. The wall structure 1 is applied, for example, to the structure of a partition wall that divides the space between the floor and ceiling in a building into a first room and a second room. The wall structure 1 comprises a main surface material 2 and a sound-insulating wall component 3 for forming a sound-insulating wall having the main surface material 2.

[0012] The main facing material 2 is made of, for example, gypsum board. In the wall structure 1, multiple main facing materials 2 are arranged in a second direction D2 perpendicular to the first direction D1, such that a joint 2A extending in the first direction D1 is formed. In addition, in the wall structure 1, two rows of main facing 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 facing materials 2 of one row of the two rows are provided to face a first room in the building, and the main facing materials 2 of the other row are provided to face a second room in the building.

[0013] The sound-insulating wall component 3 is a structure for constructing a sound-insulating wall having main facing material 2. The sound-insulating wall component 3 comprises a pair of support members 4 for supporting each row of main facing material 2 arranged spaced apart in a third direction D3, a pair of elastic members 5, a pair of extensions 7, an auxiliary facing material 8, a sound-absorbing material 9, and a pair of runners 10.

[0014] In the following explanation, when the main facing members 2 of each row, which are spaced apart in the third direction D3, are attached to a pair of support members 4, the direction from the support member 4 toward the main facing member 2 will be referred to as "one direction of the third direction D3," and the direction from the main facing member 2 toward the support member 4 will be referred to as "the other direction of the third direction D3."

[0015] The pair of runners 10 are made of, for example, steel. The pair of runners 10 are frame-shaped positioning members that extend in a second direction D2 along the ceiling and floor of the building, respectively, and are spaced apart in a first direction D1, and each holds the ends of the pair of support members 4 in the first direction D1. Each of the pair of runners 10 has a base portion 101 that extends in the second direction D2, and a pair of upright portions 102 that extend in the first direction D1 from each of the ends of the third direction D3, which is the width direction of the base portion 101.

[0016] In the runner 10 positioned above the pair of runners 10 spaced apart in the first direction D1, the base portion 101 covers the upper ends of the pair of support members 4 from above, and the pair of upright portions 102 extend downward from the base portion 101 in the first direction D1 so as to restrict the movement of the base portion 101 toward the third direction D3. In this upper runner 10, the upper end of the main surface material 2 in the first direction D1 is in contact with the upright portion side surface 1021 of the pair of upright portions 102 that faces toward one of the main surface material 2 sides toward the third direction D3.

[0017] In the lower runner 10 of a pair of runners 10 spaced apart in the first direction D1, the base 101 covers the lower ends of the pair of support members 4 from below, and the pair of upright portions 102 extend upward from the base 101 in the first direction D1 so as to restrict the movement of the base 101 toward the third direction D3. In this lower runner 10, the lower end of the main surface material 2 in the first direction D1 is in contact with the side surface 1021 of the upright portion 102 that faces one of the main surface material 2 sides toward the third direction D3.

[0018] Between a pair of runners 10 spaced apart in a first direction D1, a pair of support members 4 are erected to support the main facing material 2. These support members extend in the first direction D1 and are spaced apart in a second direction D2. Each of the support members 4 is made of, for example, steel. The pair of support members 4 are common support members configured to commonly support the main facing material 2 of each row spaced apart in a third direction D3. Alternatively, the pair of support members 4 may be individual support members 4 configured to individually support the main facing material 2 of each row spaced apart in the third direction D3. Furthermore, the cross-sectional shape of the pair of support members 4 is not particularly limited and may be, for example, a C-shaped cross-section.

[0019] The pair of support members 4 support the main facing material 2 on the side facing one of the main facing material 2 in the third direction D3. The side facing the third direction D3 of the pair of support members 4 has an edge support side that supports the edge along the joint 2A of two main facing materials 2 adjacent to each other in the second direction D2, and a residual portion support side that supports the remaining portion of the main facing material 2 other than the edge.

[0020] In the third direction D3, a pair of elastic members 5 are provided between the main surface material 2 and the pair of support members 4. The pair of elastic members 5 are provided on the side surfaces of the pair of support members 4 that face one side of the main surface material 2 in the third direction D3. That is, the elastic members 5 are provided on the edge support side surface and the remaining portion support side surface of the pair of support members 4. The pair of elastic members 5 extend in the first direction D1 across the pair of runners 10 with respect to one side surface of the pair of support members 4 in the third direction D3. The pair of elastic members 5 are members having an elastic portion 50 that has a lower elastic modulus (Young's modulus) and higher elasticity than the main surface material 2 and the support members 4, and are made of, for example, elastic polyurethane material, rubber material, or closed-cell polyethylene material. The elastic portion 50 has a deformation tolerance distance that is set in advance as the distance in the third direction D3 over which elastic deformation is permitted. The pair of elastic members 5 suppress vibration transmission between the main surface material 2 and the support members 4 by the elastic deformation of the elastic portion 50 in the third direction D3 based on the deformation tolerance distance.

[0021] As shown in Figure 2, an elastic member 5 provided on the edge support side surface of a pair of support members 4 is provided with a connecting member 6 so as to cover the side surface 51 of the elastic member 5 facing one of the main surface materials 2 in the third direction D3. The connecting member 6 extends in the first direction D1 across the pair of runners 10, covering the side surface 51 of the elastic member 5 between the edge along the joint 2A of two main surface materials 2 adjacent in the second direction D2 and the elastic member 5 provided on the edge support side surface of the pair of support members 4. The connecting member 6 has a projection 61 that protrudes towards one of the main surface materials 2 in the third direction D3 and extends in the first direction D1. The connecting member 6 is provided so as to be inserted into the joint 2A of two main surface materials 2 adjacent in the second direction D2. In this case, the projection 61 of the connecting member 6 is contained within the joint 2A and is restricted from protruding outward from the main surface materials 2. Furthermore, the rigidity of the connecting member 6 is increased because the protrusion 61 increases its second moment of area. Note that the connecting member 6 may not have the protrusion 61.

[0022] The edges along the joint 2A of two main facing materials 2 adjacent to each other in the second direction D2 are fixed to the edge-supporting side surfaces of a pair of support members 4 by screw members SC, with elastic members 5 and connecting members 6 interposed between them. In this case, the edges along the joint 2A of two main facing materials 2 adjacent to each other in the second direction D2 can be connected by the connecting members 6 through which the screw members SC pass, together with the elastic members 5. This restricts the relative movement of the edges of each main facing material 2, thereby suppressing unevenness in the sound-insulating wall composed of each main facing material 2.

[0023] On the other hand, the remaining portion of the main surface material 2, excluding the edges, is fixed to the support sides of the pair of support members 4 by an adhesive layer AD, with an elastic member 5 interposed between them. In this case, the main surface material 2 can be fixed to the support members 4 while eliminating the screw members SC, which could become vibration transmission paths, between the remaining portion of the main surface material 2 and the support members 4. This effectively suppresses vibration transmission between the remaining portion of the main surface material 2 and the support members 4. The adhesive layer AD is constructed by applying adhesive in dots to the support sides of the pair of support members 4, or by attaching a tape-like material coated with adhesive.

[0024] Furthermore, a pair of extensions 7 are provided on each side of the pair of support members 4 facing one of the main surface material 2 sides in the third direction D3. That is, each pair of extensions 7 is provided on one side of the pair of support members 4 in the third direction D3. Multiple sets of pairs of extensions 7 may be arranged spaced apart in the first direction D1 relative to the pair of support members 4. Each pair of extensions 7 has a flat extension body 70 that contacts one side 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 7 to both sides in the second direction D2. One of the 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 of the pair of support members 4 in the third direction D3 so as to cover the extension body 70 of the pair of extensions 7.

[0025] An auxiliary facing material 8 is attached to the free end pieces 71 of the pair of extension sections 7. The auxiliary facing material 8 is made of gypsum board, for example, similar to the main facing material 2. The auxiliary facing material 8 is attached to the free end pieces 71 across the pair of extension sections 7, with a pair of elastic members 5 opening to one side of the main facing material 2 in the third direction D3, and covering the free end pieces 71 of the pair of extension sections 7 from one side in the third direction D3. The auxiliary facing material 8 is attached to the free end pieces 71 of the pair of extension sections 7 by, for example, screw members SC.

[0026] As shown in Figure 3, in the state before the main facing material 2 is attached to the pair of support members 4, with the auxiliary facing material 8 attached to the free end pieces 71 of the pair of extensions 7, the side surface 51 of the pair of elastic members 5 facing one side of the main facing material 2 in the third direction D3 is located on the same plane as the side surface 81 of the auxiliary facing material 8 facing one side of the main facing material 2 in the third direction D3. Alternatively, the side surface 51 of the pair of elastic members 5 protrudes from the side surface 81 of the auxiliary facing material 8 by a distance smaller than the allowable deformation distance of the elastic portion 50 in one direction of the third direction D3. When the connecting member 6 covers the side surface 51 of the elastic member 5, the upper limit of the allowable protrusion distance when the side surface 51 of the elastic member 5 protrudes from the side surface 81 of the auxiliary facing material 8 is set, for example, to the distance obtained by subtracting the remaining thickness of the elastic portion 50 from the thickness of the auxiliary facing material 8. 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.

[0027] In the sound-insulating wall component 3, after the main surface material 2 is attached to the pair of support members 4 via the side surfaces 51 of the pair of elastic members 5, the side surfaces 51 of the elastic members 5 and the side surfaces 81 of the auxiliary surface material 8 are arranged on the same plane along the surface of the main surface material 2. When the connecting member 6 covers the side surfaces 51 of the elastic members 5, the surface of the connecting member 6 facing one of the third directions D3 is arranged on the same plane as the side surfaces 81 of the auxiliary surface material 8. Here, before the main surface material 2 is attached to the pair of support members 4, the side surfaces 51 of the elastic members 5 are on the same plane as the side surfaces 81 of the auxiliary surface material 8, or protrude from the side surfaces 81 by a distance smaller than the deformation allowable distance of the elastic portion 50. Therefore, when the main surface material 2 is attached to the support members 4, at least a portion of the deformation allowable distance of the elastic portion 50 can be left. 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 vibrations from the main surface material 2 to the support member 4.

[0028] Furthermore, in the sound-insulating wall component 3, a pair of extensions 7 have free end pieces 71 positioned between a pair of support members 4, and an auxiliary facing material 8 is attached to the extension 7 so as to cover these free end pieces 71 and to leave the elastic member 5 open. Therefore, vibration of the auxiliary facing material 8 that contacts the main facing material 2 with respect to the support member 4 is permitted when the main facing material 2 is attached, thereby suppressing vibration of the main facing material 2 at coincidence frequencies compared to the case where the auxiliary facing material 8 is not present. Furthermore, the surface density of the sound-insulating wall is improved by the combination of the main facing material 2 and the auxiliary facing material 8. Here, in order to suppress vibration propagation of the main facing material 2 at coincidence frequencies, for example, it is conceivable to attach the auxiliary facing material 8 to the main facing material 2 in advance, but in this case, it becomes necessary to lift the main facing material 2 with the auxiliary facing material 8 attached and attach it to the support member 4, which is inconvenient. In contrast, with the above configuration, the auxiliary facing material 8 can be rested on the support member 4 via the extension 7, so a sound-insulating wall having a main facing material 2 can be easily constructed.

[0029] Furthermore, when the main facing material 2 with auxiliary facing material 8 is attached to the pair of support members 4 via the member sides 51 of the pair of elastic members 5, the entire main facing material 2 with auxiliary facing material 8 is positioned outside the member sides 51 of the elastic members 5. As a result, the wall thickness of the portion of the sound-insulating wall made of the main facing material 2 with auxiliary facing material 8 that is positioned outside the member sides 51 of the elastic members 5 becomes thicker. In contrast, with the above configuration, the auxiliary facing material 8 is attached to the free end piece 71 of the extension 7 positioned between the pair of support members 4 so as to leave the elastic members 5 open. In this case, after the main facing material 2 has been attached to the pair of support members 4 via the member sides 51 of the pair of elastic members 5, the member sides 51 of the elastic members 5 and the facing material 81 of the auxiliary facing material 8 are positioned on the same plane along the surface of the main facing material 2, and the auxiliary facing material 8 is positioned inside the main facing material 2 relative to the member sides 51 of the elastic members 5. As a result, it is possible to suppress the wall thickness of the portion of the sound-insulating wall that is positioned outside the member sides 51 of the elastic members 5.

[0030] Furthermore, as shown in Figure 2, the end of the main surface material 2 in the first direction D1 abuts against the side surface 1021 of the upright portion 102 of the pair of upright portions 102 of the pair of runners 10, which faces one side of the main surface material 2 in the third direction D3. The side surface 1021 of the upright portion 102 of the pair of runners 10 is arranged on the same plane as the 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 that covers the upright portion 102 of the pair of runners 10 and the auxiliary surface material 8 from one side in the third direction D3, it is possible to prevent unevenness from occurring in the main surface material 2 where the end in the first direction D1 abuts against the side surface 1021 of the upright portion.

[0031] Furthermore, as shown in Figure 2, the sound-insulating wall component 3 may also be equipped with sound-absorbing material 9. The sound-absorbing material 9 is attached to the free end pieces 71 of the pair of extensions 7, extending between the pair of extensions 7, so as to cover the free end pieces 71 of the pair of extensions 7 from the other support member 4 side in the third direction D3. In this case, the pair of extensions 7 for attaching the auxiliary facing material 8 can also be used as parts for holding the sound-absorbing material 9.

[0032] Figure 4 is a cross-sectional view showing a modified example of a pair of extensions 7 provided on the sound-insulating wall component 3. The pair of extensions 7 may have an extension piece 72 in addition to the extension body 70 and the free end piece 71. The extension piece 72 extends from the extension body 70 in a second direction D2 so as to be positioned spaced apart from the free end piece 71 in a third direction D3. The extension piece 72 may extend from the extension body 70 to both sides in the second direction D2, or it may extend from the extension body 70 to one side in the second direction D2. The pair of extensions 7 can clamp the end of the auxiliary facing material 8 in the second direction D2 between the free end piece 71 and the extension piece 72.

[0033] The construction procedure for wall structure 1 will be explained with reference to Figures 5 to 8. First, as shown in Figure 5, a pair of extensions 7 are attached to a pair of support members 4 erected between a pair of runners 10. In this case, multiple sets of pairs of extensions 7 may be attached to the pair of support members 4, spaced apart in the first direction D1.

[0034] Next, as shown in Figure 6, a pair of elastic members 5 are attached to a pair of support members 4, and sound-absorbing material 9 is attached to a pair of extensions 7. Next, as shown in Figure 7, auxiliary surface material 8 is attached to the pair of extensions 7. With the auxiliary surface material 8 attached to the pair of extensions 7, adhesive is applied in dots to one side of the auxiliary surface material 8 in the third direction D3 to form an adhesive layer AD. Also, adhesive is applied in dots to the elastic member 5 attached to the residual portion support side that supports the remaining portion of the main surface material 2 other than the edge on one side of the pair of support members 4 in the third direction D3 to form an adhesive layer AD.

[0035] Next, as shown in Figure 8, the main facing material 2 is attached to the pair of support members 4 so as to cover the auxiliary facing material 8. In this case, the edges of two main facing materials 2 adjacent to each other in the second direction D2 along the joint 2A are fixed to the edge-supporting sides of the pair of support members 4 by screw members SC, with the elastic member 5 and connecting member 6 interposed between them. In this case, the edges of two main facing materials 2 adjacent to each other in the second direction D2 along the joint 2A can be connected by the connecting member 6 through which the screw member SC passes, together with the elastic member 5, thereby restricting the relative movement of the edges of each main facing material 2 and suppressing the occurrence of unevenness in the sound-insulating wall composed of each main facing material 2. On the other hand, the remaining portion of the main facing material 2 other than the edges is fixed to the remaining portion-supporting sides of the pair of support members 4 by adhesive layer AD, with the elastic member 5 interposed between them.

[0036] When attaching the main facing material 2 to a pair of support members 4 so as to cover the auxiliary facing material 8, the auxiliary facing material 8 can be rested on the support members 4 via a pair of extensions 7, making it easy to construct a sound-insulating wall having the main facing material 2.

[0037] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the following modified embodiments may be adopted.

[0038] Figure 9 is a perspective view of a wall structure 1 to which the sound-insulating wall component 3 according to the modified embodiment is applied, and Figure 10 is a cross-sectional view of the sound-insulating wall component 3. The sound-insulating wall component 3 according to the modified embodiment is identical to the above embodiment except that the configuration of the pair of extended portions 7A is different. For this reason, the description of the parts of the sound-insulating wall component 3 according to the modified embodiment that are the same as those of the above embodiment will be omitted, and the configuration of the pair of extended portions 7A will be described in detail.

[0039] Each pair of extensions 7A is provided on the surface of the pair of support members 4 facing the second direction D2. In this case, the pair of extensions 7A may be provided on the surface of the pair of support members 4 facing the second direction D2 with spacers or the like interposed between them. Alternatively, multiple pairs of extensions 7A may be arranged spaced apart in the first direction D1 relative to the pair of support members 4.

[0040] Each pair of extensions 7A comprises a flat extension body 70 that contacts 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 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 positioned on the other side in the third direction D3 of the pair of support members 4, relative to one side of the main surface material 2 in the third direction D3.

[0041] An auxiliary facing material 8 is attached to the free end piece 71 of the pair of extensions 7A. The auxiliary facing material 8 is attached to the free end piece 71 across the pair of extensions 7A, opening up a pair of elastic members 5 provided on the side surface of the pair of support members 4 on one side of the main facing material 2 in the third direction D3, and covering the free end piece 71 of the pair of extensions 7A from one side in the third direction D3.

[0042] Before attaching the main facing material 2 to the pair of support members 4, with the auxiliary facing material 8 attached to the free end pieces 71 of the pair of extensions 7A, the side surface 51 of the pair of elastic members 5 facing one side of the main facing material 2 in the third direction D3 is on the same plane as the side surface 81 of the auxiliary facing material 8 facing one side of the main facing material 2 in the third direction D3. Alternatively, the side surface 51 of the pair of elastic members 5 protrudes from the side surface 81 of the auxiliary facing material 8 by a distance smaller than the allowable deformation distance of the elastic portion 50 in one direction of the third direction D3. This allows for elastic deformation of the elastic portion 50 in the third direction D3 when the main facing material 2 is attached, and this elastic deformation can suppress vibration transmission from the main facing material 2 to the support members 4.

[0043] Furthermore, in the sound-insulating wall component 3, a pair of extended portions 7A have free end pieces 71 positioned between a pair of support members 4, and an auxiliary facing material 8 is attached to the extended portion 7A so as to cover these free end pieces 71 and to leave the elastic member 5 open. Therefore, vibration of the auxiliary facing material 8 that contacts the main facing material 2 with respect to the support member 4 is permitted when the main facing material 2 is attached, and this makes it possible to suppress vibration of the main facing material 2 at coincidence frequencies compared to the case where the auxiliary facing material 8 is not present.

[0044] Also, when attaching the main facing material 2 to the pair of support members 4 so as to cover the auxiliary facing material 8, the auxiliary facing material 8 can be placed on the support members 4 via the pair of extended portions 7A, so that a sound insulation wall having the main facing material 2 can be easily configured.

[0045] Note that the above-described specific embodiments mainly include inventions having the following configurations.

[0046] A sound insulation wall component according to an aspect of the present invention is a sound insulation wall component for configuring a sound insulation wall having a main facing material. This sound insulation wall component includes a pair of support members that extend in a first direction to support the main facing material and are spaced apart in a second direction orthogonal to the first direction, and a pair of elastic members provided on side surfaces of the pair of support members facing one of a third direction orthogonal to the first direction and the second direction, the pair of elastic members having elastic portions with higher elasticity than the pair of support members, a pair of extended portions that extend along the second direction from one of the pair of support members to the other and each have a free end located between the pair of support members, and an auxiliary facing material attached to the pair of extended portions across the pair of extended portions in a state of opening the pair of elastic members to one of the third directions and covering the free ends of the pair of extended portions from one of the third directions. The elastic portion has a deformation allowable distance preset as a distance in the third direction in which elastic deformation is allowed. The member side surfaces of the pair of elastic members facing one of the third directions are arranged on the same plane as the facing material side surfaces of the auxiliary facing material facing one of the third directions, or project from the facing material side surfaces toward one of the third directions by a distance smaller than the deformation allowable distance.

[0047] According to the sound insulation wall component, in the state after the main panel is attached to the pair of support members through the member side surfaces of the pair of elastic members, the member side surface of the elastic member and the panel side surface of the auxiliary panel are arranged on the same plane along the surface of the main panel. Here, since the member side surface of the elastic member is on the same plane as the panel side surface of the auxiliary panel or protrudes by a distance smaller than the deformation allowance distance from the panel side surface, in the state where the main panel is attached to the support member, at least a part of the distance of the deformation allowance distance in the elastic part can be left. Therefore, the elastic deformation in the third direction of the elastic part can be allowed in the state where the main panel is attached, and the vibration transmission from the main panel to the support member can be suppressed by this elastic deformation.

[0048] Furthermore, in the sound insulation wall component, the pair of extended parts have free ends arranged between the pair of support members, and the auxiliary panel is attached to the extended parts so as to cover the free ends and expose the elastic members. Therefore, the vibration of the auxiliary panel contacting the main panel with respect to the support member is allowed in the state where the main panel is attached, and thereby, the vibration at the coincidence frequency of the main panel can be reduced as compared with the case where the auxiliary panel does not exist. Furthermore, since the main panel and the auxiliary panel are combined, the surface density of the sound insulation wall is improved. Here, in order to reduce the vibration at the coincidence frequency of the main panel, for example, it is conceivable to attach the auxiliary panel to the main panel in advance. However, in this case, since it is necessary to lift the main panel with the auxiliary panel and attach it to the support member, the workability is poor. On the other hand, according to the above configuration, the auxiliary panel can be deposited on the support member through the extended part, so that the sound insulation wall can be easily configured.

[0049] Furthermore, when a main facing material with an auxiliary facing material is attached to a pair of support members via the side surfaces of a pair of elastic members, the entire main facing material with the auxiliary facing material is positioned outside the side surfaces of the elastic members. As a result, the wall thickness of the portion of the sound-insulating wall that is positioned outside the side surfaces of the elastic members becomes thicker. In contrast, with the above configuration, the auxiliary facing material is attached to the free end of the extension positioned between the pair of support members so as to leave the elastic members open. In this case, after the main facing material is attached to the pair of support members via the side surfaces of a pair of elastic members, the side surfaces of the elastic members and the facing material of the auxiliary facing material are positioned on the same plane along the surface of the main facing material, and the auxiliary facing material is positioned inside the main facing material relative to the side surfaces of the elastic members. Therefore, it is possible to suppress the increase in wall thickness of the portion of the sound-insulating wall that is positioned outside the side surfaces of the elastic members.

[0050] The sound-insulating wall component may further include sound-absorbing material attached to the pair of extended portions, extending between them, so as to cover the pair of extended portions from the other of the third directions.

[0051] According to the sound-insulating wall component, a pair of extensions for attaching auxiliary facing material can also be used as parts for holding sound-absorbing material.

[0052] The sound-insulating wall component may further include a positioning member having a base that covers the ends of the pair of support members from one of the first directions, and an upright portion that rises from the base in the first direction so as to restrict the movement of the base toward one of the third directions. In this case, the side surface of the upright portion facing one of the third directions is arranged on the same plane as the side surface of the surface material.

[0053] According to the sound-insulating wall component, since the side surface of the upright portion of the positioning member and the side surface of the auxiliary facing material are arranged on the same plane, it is possible to prevent unevenness from occurring on the main facing material when the main facing material is attached to the support member in a state where the upright portion and the auxiliary facing material are covered from one of the third directions.

[0054] A wall structure according to another aspect of the present invention comprises a main surface material and sound-insulating wall components for forming a sound-insulating wall having the main surface material.

[0055] According to the aforementioned wall structure, since it is equipped with the above-mentioned sound-insulating wall components, a wall structure capable of improving sound insulation performance can be easily constructed.

Claims

1. A sound-insulating wall component for constructing a sound-insulating wall having a main surface material, comprising: a pair of support members extending in a first direction and spaced apart in a second direction perpendicular to the first direction to support the main surface material; a pair of elastic members provided on the sides of the pair of support members facing one of the first direction and a third direction perpendicular to the second direction, and having an elastic portion having higher elasticity than the pair of support members; a pair of extensions extending from one of the pair of support members toward the other along the second direction and each having a free end located between the pair of support members; and an auxiliary surface material attached to the pair of extensions across the pair of extensions, such that the pair of elastic members are open to one of the third directions and the free ends of the pair of extensions are covered from one of the third directions, wherein the elastic portion has a deformation tolerance distance that is set in advance as the distance in the third direction over which elastic deformation is permitted. A sound-insulating wall component wherein the side surfaces of the pair of elastic members facing one of the third directions are arranged on the same plane as the side surface of the auxiliary surface material facing one of the third directions, or protrude from the side surface material by a distance smaller than the allowable deformation distance toward one of the third directions.

2. The sound-insulating wall component according to claim 1, further comprising sound-absorbing material attached to the pair of extended portions, extending between the pair of extended portions, in such a manner that it covers the pair of extended portions from the other of the third directions.

3. The sound-insulating wall component according to claim 1 or 2, further comprising a positioning member having a base that covers the ends of the pair of support members from one of the first directions, and an upright portion that rises from the base in the first direction so as to restrict the movement of the base toward one of the third directions, wherein the side surface of the upright portion facing one of the third directions is arranged on the same plane as the side surface of the facing material.

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

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