Wall substrate structure and wall structure

Abstract

Provided are a wall substrate structure and a wall structure capable of improving sound insulation performance.　A wall structure (1) is provided with a surface material (2) and a wall substrate structure (3). The wall substrate structure (3) is provided with a support member (4), an elastic member (5), and a low elastic member (6). The support member (4) extends in the vertical direction and supports the surface material (2). The elastic member (5) is provided between the surface material (2) and the support member (4). The low elastic member (6) is provided between the elastic member (5) and the surface material (2), and has lower elasticity than the elastic member (5).

Description

Wall base structure and wall structure

[0001] The present invention relates to a wall base structure and a wall structure.

[0002] As a wall structure of a building, for example, Patent Document 1 discloses a fire-resistant partition wall. The fire-resistant partition wall disclosed in Patent Document 1 includes a gypsum board, a column for supporting the gypsum board, a spring provided between the gypsum board and the column, and a screw for fixing the gypsum board to the column through the spring.

[0003] In the fire-resistant partition wall disclosed in Patent Document 1, since a spring is provided between the gypsum board and the column, vibration transmission between the gypsum board and the column can be suppressed by the spring. However, when the gypsum board is fixed to the column with screws, the spring is locally deformed. In this case, since the gypsum board is attached to the column in a state where the elastic force of the spring is lost, the vibration transmission suppression effect by the spring is reduced and the sound insulation performance is reduced.

[0004] Japanese Patent Application Laid-Open No. 9-96033

[0005] An object of the present invention is to provide a wall base structure and a wall structure capable of improving sound insulation performance.

[0006] The wall base structure according to one aspect of the present invention includes a support member that extends in the vertical direction and supports a facing material, an elastic member provided between the facing material and the support member, and a low-elastic member provided between the elastic member and the facing material and having a lower elasticity than the elastic member. <0OO0014> The wall structure according to another aspect of the present invention includes a facing material and the wall base structure.

[0008] According to the present invention, it is possible to provide a wall base structure and a wall structure capable of improving sound insulation performance.

[0009] This is a perspective view of a wall structure to which the wall substrate structure according to an embodiment of the present invention is applied. This is a cross-sectional view of the wall substrate structure along line II-II in Figure 1. This is a cross-sectional view of the wall substrate structure along line III-III in Figure 1. This is a cross-sectional view of the wall substrate structure according to the first modified embodiment. This is a cross-sectional view of the wall substrate structure according to the second modified embodiment.

[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, directional relationships will be described using the XYZ Cartesian coordinate axes. The X-axis direction is parallel to the horizontal plane, the Y-axis direction is perpendicular to the X-axis direction on the horizontal plane, and the Z-axis direction is vertical, perpendicular to both the X and Y directions.

[0011] Figure 1 is a perspective view of a wall structure 1 to which a wall base structure 3 according to an embodiment of the present invention is applied. Figures 2 and 3 are cross-sectional views of the wall base structure 3. 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 surface material 2 composed of a first surface material 21 and a second surface material 22, and a wall base structure 3.

[0012] The first facing material 21 and the second facing material 22 are made of, for example, gypsum board. The first facing material 21 and the second facing material 22 are arranged side by side in the X-axis direction (horizontal direction) perpendicular to the Z-axis direction so that a joint 2A extending in the Z-axis direction (vertical direction) is formed. In the wall structure 1, two separate and independent sets of first facing material 21 and second facing material 22 are provided at a predetermined distance apart in the Y-axis direction perpendicular to the Z-axis direction and the X-axis direction. In this case, one set of first facing material 21 and second facing material 22 is provided to face a first room in the building, and the other set of first facing material 21 and second facing material 22 is provided to face a second room in the building.

[0013] The wall base structure 3 includes a support member 4 that extends in the Z-axis direction and supports the facing material 2, an elastic member 5 provided between the facing material 2 and the support member 4, a low-elasticity member 6 provided between the elastic member 5 and the facing material 2, and a runner 7.

[0014] The runner 7 has an upper runner 71 and a lower runner 72, which are made of, for example, steel. The upper runner 71 is a frame member that extends in the X-axis direction along the ceiling of the building and holds the upper end of the Z-axis end of the support member 4. The upper runner 71 has an upper horizontal portion 711 that extends in the X-axis direction and a pair of upper upright portions 712 that extend downward in the Z-axis direction from each of the widthwise (Y-axis direction) ends of the upper horizontal portion 711. In the upper runner 71, the upper end of the Z-axis end of the face material 2 abuts against the upper upright portions 712. The upper runner 71, with the upper horizontal portion 711 and the pair of upper upright portions 712, forms a groove that accommodates the upper end of the support member 4. The lower runner 72 is a frame member that extends in the X-axis direction along the floor of the building and holds the lower end of the Z-axis end of the support member 4. The lower runner 72 has a lower horizontal portion 721 extending in the X-axis direction, and a pair of lower upright portions 722 extending upward in the Z-axis direction from each of the widthwise (Y-axis direction) ends of the lower horizontal portion 721. In the lower runner 72, the lower end of the Z-axis direction end of the face material 2 abuts against the lower upright portions 722. The lower runner 72 forms a groove that accommodates the lower end of the support member 4 with the lower horizontal portion 721 and the pair of lower upright portions 722.

[0015] Between the upper runner 71 and the lower runner 72, a plurality of support members 4 are erected at predetermined intervals in the X-axis direction to maintain the structural strength of the building. The support members 4 are made of, for example, steel. The support members 4 are common support members 4 configured to commonly support both the first and second facing members 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction. Alternatively, the support members 4 may be individual support members 4 configured to individually support the first and second facing members 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction. In the example shown in Figure 2, the support members 4 are formed in a cylindrical or columnar shape with a rectangular cross-section and are common support members 4 configured to commonly support both the first and second facing members 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction.

[0016] An elastic member 5 is provided between the first panel 21 and the second panel 22 and the support member 4. As shown in Figure 3, the elastic member 5 extends in the Z-axis direction between the upper upright portion 712 of the upper runner 71 and the lower upright portion 722 of the lower runner 72, between the first panel 21 and the second panel 22 and the support member 4. The elastic member 5 is a flat plate-shaped member with a lower elastic modulus (Young's modulus) than the first panel 21, the second panel 22, and the support member 4, and is made of, for example, elastic polyurethane, rubber, or closed-cell polyethylene. In this case, the elastic member 5 has higher elasticity than the first panel 21, the second panel 22, and the support member 4. As a result, the elastic member 5 suppresses vibration transmission between the first panel 21 and the second panel 22 and the support member 4.

[0017] A low-elasticity member 6 is provided between the first facing material 21 and the second facing material 22 and the elastic member 5. As shown in Figure 3, the low-elasticity member 6 extends in the Z-axis direction between the upper upright portion 712 of the upper runner 71 and the lower upright portion 722 of the lower runner 72, between the first facing material 21 and the second facing material 22 and the elastic member 5. The low-elasticity member 6 is provided so as to overlap the elastic member 5 when viewed in the Y-axis direction. The low-elasticity member 6 is a flat plate-shaped member with a higher modulus of elasticity (Young's modulus) than the elastic member 5, and is made of, for example, a metal material such as steel, a hard resin material, or a hard paper material. In this case, the low-elasticity member 6 has lower elasticity than the elastic member 5.

[0018] The wall structure 1, which has the wall base structure 3 configured as described above, is constructed as follows. First, a plurality of support members 4 are erected between the upper runner 71 and the lower runner 72. Next, an elastic member 5 is attached to the support members 4, and a low-elasticity member 6 is attached to the elastic member 5 so as to cover the elastic member 5. Then, the first facing material 21 and the second facing material 22 are arranged so as to cover the low-elasticity member 6, and the first facing material 21 and the second facing material 22 are fixed to the support members 4 by screw members 81 or the like. In this way, a wall structure 1 is constructed in which the low-elasticity member 6 and the elastic member 5 are interposed between the first facing material 21 and the second facing material 22 and the support members 4.

[0019] In the wall substrate structure 3, a low-elasticity member 6 is provided between the first panel 21 and the second panel 22 and the elastic member 5. When the first panel 21 and the second panel 22 are locally fixed to the support member 4 with a screw member 81 or the like, the area of ​​the elastic member 5 pressed by the screw member 81 can be expanded compared to the case where the low-elasticity member 6 is not interposed, due to the low deformation resistance of the low-elasticity member 6. Therefore, local deformation of the elastic member 5 by the screw member 81 can be suppressed. As a result, the first panel 21 and the second panel 22 are not attached to the support member 4 in a state where the elastic force of the elastic member 5 has been lost, so vibration transmission between the first panel 21 and the second panel 22 and the support member 4 can be reliably suppressed by the elastic member 5, and the sound insulation performance of the wall structure 1 can be improved.

[0020] As shown in Figures 2 and 3, the combined thickness of the elastic member 5 and the low-elasticity member 6 is less than or equal to the distance from the mounting surface 41 of the support member 4 where the elastic member 5 and the low-elasticity member 6 are provided, to the side of one of the pair of upper mounting parts 712 and 722 of the lower runner 72 that is closer to the mounting surface 41 and facing away from the support member 4. In other words, the combined thickness of the elastic member 5 and the low-elasticity member 6 is less than or equal to the thickness of each mounting part of the pair of upper mounting parts 712 of the upper runner 71 and the pair of lower mounting parts 722 of the lower runner 72. In this case, the elastic member 5 and the low-elasticity member 6 are positioned within the thickness range of the upper upright portion 712 and the lower upright portion 722 between the first panel 21 and the second panel 22 and the support member 4. Therefore, when the first panel 21 and the second panel 22 are locally fixed to the support member 4 with a screw member 81 or the like, local deformation of the elastic member 5 by the screw member 81 can be reliably suppressed. This reliably prevents the first panel 21 and the second panel 22 from being attached to the support member 4 in a state where the elastic force of the elastic member 5 has been lost, and thus vibration transmission between the first panel 21 and the second panel 22 and the support member 4 can be reliably suppressed by the elastic member 5.

[0021] Furthermore, in the wall substrate structure 3, it is desirable that the sliding resistance of the low-elasticity member 6 relative to the first panel 21 and the second panel 22 is smaller than the sliding resistance of the elasticity member 5 relative to the first panel 21 and the second panel 22. In this way, because the sliding resistance of the low-elasticity member 6 provided between the first panel 21 and the second panel 22 and the elasticity member 5 is smaller than the sliding resistance of the elasticity member 5, when the first panel 21 and the second panel 22 are attached to the support member 4 while shifting them in the in-plane direction, the first panel 21 and the second panel 22 are prevented from getting caught on the low-elasticity member 6, thereby improving the workability of attaching the first panel 21 and the second panel 22 to the support member 4.

[0022] Furthermore, as shown in Figures 2 and 3, the support member 4 has a first support portion 4A that supports the edges of the first panel 21 and the second panel 22 along the joint 2A, and a second support portion 4B that supports the remaining portions of the first panel 21 and the second panel 22 other than the edges. In this case, an elastic member 5 and a low-elasticity member 6 are provided between the edges of the first panel 21 and the second panel 22 along the joint 2A and the first support portion 4A, and at least the elastic member 5 of the elastic member 5 and low-elasticity member 6 is provided between the remaining portions of the first panel 21 and the second panel 22 other than the edges and the second support portion 4B.

[0023] Furthermore, the wall structure 1 includes a screw member 81 for fixing the edges of the first facing material 21 and the second facing material 22 along the joint 2A to the first support part 4A, and an adhesive layer 82 for fixing the remaining portions of the first facing material 21 and the second facing material 22 other than the edges to the second support part 4B.

[0024] The edges of the first panel 21 and the second panel 22 along the joint 2A are fixed to the first support part 4A by screw members 81 at predetermined intervals in the Z-axis direction. The screw members 81 are driven into the first support part 4A from the opposite side of the first support part 4A, through the low-elasticity member 6 and the elasticity member 5, and fix the edges of the first panel 21 and the second panel 22 along the joint 2A to the first support part 4A.

[0025] The remaining portions of the first panel 21 and the second panel 22, excluding the edges, are fixed to the second support portion 4B by adhesive layers 82 at predetermined intervals in the Z-axis direction. The adhesive layer 82 is a layer made of adhesive, and fixes the remaining portions of the first panel 21 and the second panel 22, excluding the edges, to the second support portion 4B via at least one of the elastic members 5 among the low-elasticity member 6 and the elastic member 5.

[0026] In wall structure 1, the edges of the first panel 21 and the second panel 22 along the joint 2A are fixed to the first support portion 4A of the support member 4 by a screw member 81 with a low-elasticity member 6 and an elasticity member 5 interposed between them. In this case, the local deformation of the elasticity member 5 caused by the screw member 81 between the edges of the first panel 21 and the second panel 22 and the first support portion 4A can be suppressed by the low-elasticity member 6, thereby reliably suppressing vibration transmission. Furthermore, since the edges of the first panel 21 and the second panel 22 can be connected to each other by the low-elasticity member 6 through which the screw member 81 passes, together with the elasticity member 5, the relative movement of the edges of the first panel 21 and the second panel 22 can be restricted, thereby suppressing unevenness on the surface formed by the first panel 21 and the second panel 22. As a result, when a finishing material such as wallpaper is attached to the surface formed by the first panel 21 and the second panel 22, damage to the finishing material can be prevented.

[0027] On the other hand, the remaining portions of the first panel 21 and the second panel 22 other than the edges are fixed to the second support portion 4B of the support member 4 by adhesive layer 82 via at least the elastic member 5 of the low-elasticity member 6 and elastic member 5. In this case, the first panel 21 and the second panel 22 can be fixed to the second support portion 4B with respect to the remaining portions of the first panel 21 and the second panel 22 other than the edges, while eliminating the screw member 81 which could become a vibration propagation path. This effectively suppresses vibration transmission between the remaining portions of the first panel 21 and the second panel 22 other than the edges and the second support portion 4B. Furthermore, when the remaining portions of the first panel 21 and the second panel 22 other than the edges are fixed to the second support portion 4B by adhesive layer 82, the local deformation of the elastic member 5 is suppressed by eliminating the screw member 81, so the low-elasticity member 6 can be omitted.

[0028] 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.

[0029] [First Modified Embodiment] Figure 4 is a cross-sectional view of the wall base structure 3 according to the first modified embodiment. The wall base structure 3 according to the first modified embodiment is identical to the above embodiment except for the different configuration of the support member 4. For this reason, in the wall base structure 3 according to the first modified embodiment, the description of the parts that are the same as those in the above embodiment will be omitted, and the configuration of the support member 4 will be described in detail.

[0030] Between the upper runner 71 and the lower runner 72, a plurality of support members 4 are erected at predetermined intervals in the X-axis direction to maintain the structural strength of the building. In the wall base structure 3 according to the first modified embodiment, there is a mixture of common support members 4 configured to commonly support both the first and second facing materials 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction, and individual support members 4 configured to individually support the first and second facing materials 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction. In the example shown in Figure 4, between the upper runner 71 and the lower runner 72, there are common support members 4, two individual support members 4 corresponding to the first and second facing materials 21 and 22 on one side in the Y-axis direction, and two individual support members 4 corresponding to the other side in the Y-axis direction.

[0031] The common support member 4 has a first support portion 4A that supports the edge portion along the joint 2A of one of the first and second panel materials 21 and 22 in the Y-axis direction, and a second support portion 4B that supports the remaining portion of the first panel material 21 other than the edge portion of the other first and second panel material 21 and 22 in the Y-axis direction. The edge portion along the joint 2A of one of the first and second panel materials 21 and 22 in the Y-axis direction is fixed to the first support portion 4A of the common support member 4 by a screw member 81 with a low-elasticity member 6 and an elasticity member 5 interposed therebetween. In this case, between the edge portion of the first and second panel materials 21 and 22 and the first support portion 4A, the low-elasticity member 6 can suppress the local deformation of the elasticity member 5 caused by the screw member 81, thereby reliably suppressing vibration transmission. Furthermore, since the edges of the first surface material 21 and the second surface material 22 can be connected to each other by the low-elasticity member 6 through which the screw member 81 passes, together with the elastic member 5, the relative movement of the edges of the first surface material 21 and the second surface material 22 can be restricted, thereby suppressing the occurrence of unevenness on the surface formed by the first surface material 21 and the second surface material 22.

[0032] Two individual support members 4, corresponding to one of the first and second facing materials 21 and 22 in the Y-axis direction, are arranged on both sides in the X-axis direction, flanking a common support member 4. One individual support member 4 has a second support portion 4B that supports the remaining portion of the first facing material 21 other than the edge, and the other individual support member 4 has a second support portion 4B that supports the remaining portion of the second facing material 22 other than the edge. The remaining portions of one of the first facing material 21 and second facing material 22 in the Y-axis direction, other than the edge, are fixed to the second support portion 4B of the individual support member 4 by an adhesive layer 82, with at least one of the elastic members 5 (of the low-elasticity member 6 and elastic member 5) interposed between them.

[0033] Two separate support members 4 corresponding to the other first panel 21 and second panel 22 in the Y-axis direction are arranged on both sides in the X-axis direction, flanking a common support member 4. One of the separate support members 4 has a first support portion 4A that supports the edges of the first panel 21 and second panel 22, while the other separate support member 4 has a second support portion 4B that supports the remaining portion of the first panel 21 other than the edges. The edges of the other first panel 21 and second panel 22 along the joint 2A in the Y-axis direction are fixed to the first support portion 4A of the separate support member 4 by a screw member 81 with a low-elasticity member 6 and an elasticity member 5 interposed therebetween. In this case, between the edges of the first panel 21 and second panel 22 and the first support portion 4A, the low-elasticity member 6 can suppress local deformation of the elasticity member 5 caused by the screw member 81, thereby reliably suppressing vibration transmission. Furthermore, since the edges of the first and second facing materials 21 and 22 can be connected to each other by the low-elasticity member 6 through which the screw member 81 passes, together with the elastic member 5, the relative movement of the edges of the first and second facing materials 21 and 22 can be restricted, thereby suppressing the occurrence of unevenness on the surface formed by the first and second facing materials 21 and 22. The remaining portions of the other first and second facing materials 21 and 22 in the Y-axis direction, other than the edges, are fixed to the second support portion 4B of the individual support member 4 by the adhesive layer 82, with at least the elastic member 5 of the low-elasticity member 6 and elastic member 5 interposed therein.

[0034] [Second Modified Embodiment] Figure 5 is a cross-sectional view of the wall base structure 3 according to the second modified embodiment. The wall base structure 3 according to the second modified embodiment is identical to the above embodiment except that the configuration of the support member 4 and the configuration of the low-elasticity member 6A are different. For this reason, in the wall base structure 3 according to the second modified embodiment, the explanation of the parts that are the same as in the above embodiment will be omitted, and the configuration of the support member 4 and the low-elasticity member 6A will be explained in detail.

[0035] Between the upper runner 71 and the lower runner 72, a plurality of support members 4 are erected at predetermined intervals in the X-axis direction to maintain the structural strength of the building. In the wall base structure 3 according to the second modified embodiment, the support member 4 is formed in a C-shape in cross-section and is a common support member 4 configured to commonly support both the first and second facing materials 21 and 22 on one side in the Y-axis direction and the other side in the Y-axis direction. The common support member 4 with a C-shape in cross-section has a first support portion 4A that supports the edges along the joint 2A of the first and second facing materials 21 and 22, and a second support portion 4B that supports the remaining parts of the first and second facing materials 21 and 22 other than the edges.

[0036] The remaining portions of the first facing material 21 and the second facing material 22, excluding the edges, are fixed to the second support portion 4B of the common support member 4 by an adhesive layer 82, with at least one of the flat, low-elasticity member 6 and elastic member 5, similar to the embodiment described above, interposed between them.

[0037] On the other hand, the edges of the first facing material 21 and the second facing material 22 along the joint 2A are fixed to the first support portion 4A of the common support member 4 by a screw member 81, with a low-elasticity member 6A and an elasticity member 5 interposed therein, having a configuration different from that of the above embodiment. The low-elasticity member 6A extends in the Z-axis direction between the upper upright portion 712 of the upper runner 71 and the lower upright portion 722 of the lower runner 72, between the edges of the first facing material 21 and the second facing material 22 along the joint 2A and the elasticity member 5. The low-elasticity member 6A is provided so as to overlap the elasticity member 5 when viewed in the Y-axis direction. The low-elasticity member 6A has a projection 6A1 that protrudes on the side opposite to the first support portion 4A in the Y-axis direction and extends in the Z-axis direction. The low-elasticity member 6A is provided so as to insert the projection 6A1 into the joint 2A between the edges of the first facing material 21 and the second facing material 22 along the joint 2A and the elasticity member 5. In this case, the protruding portion 6A1 of the low-elasticity member 6A is contained within the joint 2A, and is restricted from protruding outward from the first facing material 21 and the second facing material 22. Furthermore, because the protruding portion 6A1 is provided, the second moment of area of ​​the low-elasticity member 6A increases, thereby increasing the rigidity of the low-elasticity member 6A itself.

[0038] In the wall substrate structure 3 according to the second modified embodiment, the edges of the first facing material 21 and the second facing material 22 along the joint 2A are fixed to the first support portion 4A of the common support member 4 by a screw member 81 with a low-elasticity member 6A and an elasticity member 5 interposed therebetween. In this case, between the edges of the first facing material 21 and the second facing material 22 and the first support portion 4A, the low-elasticity member 6A suppresses local deformation of the elasticity member 5 caused by the screw member 81, thereby reliably suppressing vibration transmission. Furthermore, since the edges of the first facing material 21 and the second facing material 22 can be connected to each other by the low-elasticity member 6A through which the screw member 81 passes, together with the elasticity member 5, the relative movement of the edges of the first facing material 21 and the second facing material 22 can be restricted, thereby suppressing the occurrence of unevenness on the surface formed by the first facing material 21 and the second facing material 22.

[0039] The specific embodiments described above mainly include inventions having the following configurations.

[0040] A wall base structure according to one aspect of the present invention comprises a support member that extends in the vertical direction and supports a surface material, an elastic member provided between the surface material and the support member, and a low-elasticity member provided between the elastic member and the surface material and having lower elasticity than the elastic member.

[0041] According to the wall substrate structure described above, by providing a low-elasticity member between the elastic member and the surface material, when the surface material is locally fixed to the support member with a screw member or the like, the area of ​​the elastic member pressed by the screw member can be expanded compared to the case where the low-elasticity member is not interposed, due to the low resistance of deformation of the low-elasticity member. Therefore, local deformation of the elastic member by the screw member can be suppressed. As a result, it is possible to prevent the surface material from being attached to the support member with the elastic force of the elastic member lost, so that vibration transmission between the surface material and the support member can be reliably suppressed by the elastic member, and sound insulation performance can be improved.

[0042] The wall base structure may further include a frame member having a horizontal portion extending in the horizontal direction and a pair of standing portions extending in the vertical direction from both ends in the width direction of the horizontal portion and against which the upper and lower ends of the facing material abut. The total thickness of the elastic member and the low-elasticity member is not more than the distance from the installation side surface of the support member where the elastic member and the low-elasticity member are provided to the surface facing away from the support member of the one standing portion closer to the installation side surface among the pair of standing portions.

[0043] According to the wall base structure, the support member supports the facing material such that the upper and lower ends of the facing material abut against the standing portions while the upper and lower ends of the support member are accommodated in the groove portion formed by the horizontal portion of the frame member and the pair of standing portions. In such a case, the total thickness of the elastic member and the low-elasticity member is not more than the distance from the installation side surface of the support member where the elastic member and the low-elasticity member are provided to the surface facing away from the support member of the one standing portion closer to the installation side surface among the pair of standing portions. That is, the total thickness of the elastic member and the low-elasticity member is not more than the thickness of the standing portion. Thereby, since the elastic member and the low-elasticity member are arranged within the range of the thickness of the standing portion between the facing material and the support member, when the facing material is locally fixed to the support member with a screw member or the like, local deformation of the elastic member due to the screw member can be reliably suppressed. Thereby, it is possible to surely prevent the facing material from being attached to the support member in a state where the elastic force of the elastic member is lost, so that vibration transmission between the facing material and the support member can be surely suppressed by the elastic member.

[0044] In the wall base structure, the sliding resistance of the low-elasticity member with respect to the facing material may be smaller than the sliding resistance of the elastic member with respect to the facing material.

[0045] According to the wall base structure, since the sliding resistance of the low-elastic member provided between the elastic member and the facing material is smaller than the sliding resistance of the elastic member, when attaching the facing material while shifting it in the in-plane direction with respect to the support member, it is possible to prevent the facing material from being caught by the low-elastic member, etc., and thus the workability of attaching the facing material to the support member can be improved.

[0046] The wall structure according to another aspect of the present invention includes a facing material and the wall base structure.

[0047] According to the wall structure, since it includes a wall base structure capable of reliably suppressing vibration transmission between the facing material and the support member by the elastic member, it is possible to realize a wall structure capable of improving sound insulation performance.

[0048] In the wall structure, the facing material may have a first facing material and a second facing material arranged horizontally so that joints extending in the vertical direction are formed. In this case, the support member may have a first support portion that supports the edge portions along the joints in the first facing material and the second facing material, and a second support portion that supports the remaining portions other than the edge portions in the first facing material and the second facing material. And the wall structure includes the low-elastic member and the elastic member driven through from the opposite side of the first support portion with respect to the edge portions in the first facing material and the second facing material up to the first support portion, and a screw member that fixes the edge portions in the first facing material and the second facing material to the first support portion, and an adhesive layer that fixes the remaining portions in the first facing material and the second facing material to the second support portion through at least the elastic member among the low-elastic member and the elastic member.

[0049] According to the wall structure described above, the edges along the joints of the first and second facing materials are fixed to the first support portion of the support member by a screw member, with a low-elasticity member and an elastic member interposed between them. In this case, the local deformation of the elastic member caused by the screw member between the edges of the first and second facing materials and the first support portion can be suppressed by the low-elasticity member, thereby reliably suppressing vibration transmission. Furthermore, since the edges of the first and second facing materials can be connected to each other by the low-elasticity member through which the screw member passes, together with the elastic member, the relative movement of the edges of the first and second facing materials can be restricted, thereby suppressing the occurrence of unevenness on the surface formed by the first and second facing materials.

[0050] On the other hand, the remaining portions of the first and second panels other than the edges are fixed to the second support portion of the support member by an adhesive layer via at least one of the elastic members among the low-elasticity member and the elastic member. In this case, the first and second panels can be fixed to the second support portion without any screw members that could become vibration transmission paths between the remaining portions of the first and second panels other than the edges and the second support portion. This effectively suppresses vibration transmission between the remaining portions of the first and second panels other than the edges and the second support portion. Furthermore, when the remaining portions of the first and second panels other than the edges are fixed to the second support portion by an adhesive layer, the low-elasticity member can be omitted because local deformation of the elastic member is suppressed by the elimination of the screw member.

Claims

1. A wall substrate structure comprising: a support member extending in the vertical direction and for supporting a surface material; an elastic member provided between the surface material and the support member; and a low-elasticity member provided between the elastic member and the surface material and having lower elasticity than the elastic member.

2. The wall base structure according to claim 1, further comprising a frame member having a horizontal portion extending horizontally and a pair of upright portions extending vertically from each of the widthwise ends of the horizontal portion and in contact with the vertical ends of the surface material, wherein the horizontal portion and the upright portions form a groove for accommodating the vertical ends of the support member, the total thickness of the thickness of the elastic member and the thickness of the low-elasticity member being less than or equal to the distance from the side surface of the support member on which the elastic member and the low-elasticity member are provided to the side surface of the pair of upright portions that is closer to the side surface on which it is provided, facing away from the support member.

3. The wall substrate structure according to claim 1 or 2, wherein the sliding resistance of the low-elasticity member to the surface material is smaller than the sliding resistance of the elasticity member to the surface material.

4. A wall structure comprising a facing material and a wall base structure according to any one of claims 1 to 3.

5. The wall structure according to claim 4, wherein the facing material has a first facing material and a second facing material arranged horizontally so as to form a joint extending in the vertical direction, the support member has a first support portion that supports the edges of the first facing material and the second facing material along the joint, and a second support portion that supports the remaining portions of the first facing material and the second facing material other than the edges, the screw member is driven into the first support portion from the opposite side of the first support portion with respect to the edges of the first facing material and the second facing material, passing through the low-elasticity member and the elastic member, and fixing the edges of the first facing material and the second facing material to the first support portion, and an adhesive layer fixes the remaining portions of the first facing material and the second facing material to the second support portion via at least the elastic member of the low-elasticity member and the elastic member.

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