Wall structure

Abstract

To provide a wall structure having a relatively high sound insulation performance and fire resistance performance while having an internal storage space. [Solution] The wall structure 1 comprises a fire-resistant enclosing member 5a that extends in the perpendicular direction D3 from the opening edge 2c of the first wall material 2 toward the second wall material 3 around the entire circumference of the opening 2b formed in the first wall material 2 in the region between a pair of first partition posts 4c and covered in the perpendicular direction D3 by the second wall material 3, and is fixed to the pair of first partition posts 4c, and a fire-resistant buffer member 5b that is sandwiched in the perpendicular direction D3 between the enclosing opposing surface 5a3 of the enclosing member 5a that faces the second wall material 3 and the second wall material 3, and that has fire resistance and flexibility higher than that of the enclosing member 5a.

Description

[Technical Field]

[0001] The present invention relates to a wall structure having an internal storage space. [Background technology]

[0002] Conventionally, for example, a wall panel described in Patent Document 1 has been known. The wall panel includes a pillar, an inner wall provided inside the pillar, an outer wall provided outside the pillar, and aluminum sashes fitted into openings formed in the inner wall and the outer wall.

[0003] The aluminum sash has four frames that surround the space within the opening, and a back panel that is attached to the outer ends of the four frames to close the space within the four frames from the outside.

[0004] As described above, the wall panel described in Patent Document 1 has a storage space defined by four frames and a back panel. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Unexamined Patent Publication No. 54-81624 Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, even wall structures having storage spaces are required to have high sound insulation and fire resistance.

[0007] However, the wall panel described in Patent Document 1 does not have a configuration that takes into consideration sound insulation performance and fire resistance.

[0008] An object of the present invention is to provide a wall structure that has a relatively high level of sound insulation and fire resistance while having an internal storage space. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides a wall structure comprising a first wall member extending in a predetermined vertical direction and horizontal direction, having a first opposing surface facing in one of the orthogonal directions orthogonal to the vertical direction and the horizontal direction, and having fire resistance; a second wall member having a second opposing surface opposing the first opposing surface in the orthogonal direction, and having fire resistance; a pair of first partition posts extending in the vertical direction and spaced apart from each other in the horizontal direction and fixed to the first opposing surface while being spaced apart from the second opposing surface in the orthogonal direction; A wall structure is provided, comprising: a surrounding member having fire resistance, the surrounding member extending in the orthogonal direction from the opening edge portion of the first wall member toward the second wall member around the entire periphery of the opening edge portion of the first wall member surrounding the periphery of an opening formed in an area that is covered in the orthogonal direction by the second wall member, and the surrounding member being fixed to the pair of first partition walls; and a fire-resistant buffer member sandwiched in the orthogonal direction between the surrounding opposing surface of the surrounding member that faces the second wall member and the second wall member, the fire-resistant buffer member having fire resistance and flexibility higher than that of the surrounding member (first invention).

[0010] According to the first aspect of the present invention, the storage space can be divided by the surrounding member, the second wall member, and the fire-resistant buffer member sandwiched between them. Furthermore, since the surrounding member, the second wall member, and the fire-resistant buffer member that divide the storage space are all fire-resistant, a highly fire-resistant wall structure can be realized.

[0011] Furthermore, the first partition stud to which the first wall member is fixed is positioned perpendicularly away from the second wall member, and the fire-resistant buffer member has greater flexibility than the surrounding member. This effectively prevents vibrations generated in either the first or second wall member from propagating to the other. Therefore, a wall structure with higher sound insulation performance can be achieved compared to when the first partition stud is fixed to both the first and second wall members, or when the surrounding member and the second wall member are in direct contact without the fire-resistant buffer member.

[0012] In the wall structure of the first invention, the first wall material, the second wall material, and the surrounding member are preferably made of plate material of the same material, and the thickness dimension of the surrounding member along the surface direction of the first wall material is preferably equal to or greater than the thickness dimension of the first wall material and the second wall material along the perpendicular direction (second invention).

[0013] According to the second aspect of the present invention, the thickness of the first wall surface member, the second wall surface member, and the surrounding member are all made of plates of the same material, and the thickness of the surrounding member is set to be equal to or greater than the thickness of the first wall surface member and the second wall surface member. This allows the fire resistance of the surrounding member surrounding the opening to be set to be equal to or greater than the fire resistance of the area of ​​the first wall surface member other than the opening and the fire resistance of the area of ​​the second wall surface covering the opening. This makes it possible to prevent a decrease in fire resistance compared to when no opening is formed in the wall structure (when the wall structure is made up of only the first wall surface member and the second wall surface member).

[0014] In the wall structure of the first or second invention, it is preferable that the wall structure further comprises a second partition extending in the vertical direction at a position laterally offset from the opening when viewed from the front of the wall structure along the orthogonal direction, and away from the first wall member, the surrounding member, and the first partition and fixed to the second opposing surface of the second wall member (third invention).

[0015] According to the third aspect of the present invention, the second stud fixed to the second wall surface member is positioned away from the first wall surface member and the first stud. Therefore, compared to when the second stud is in contact with the first wall surface member or the first stud, it is possible to suppress the propagation of vibration between the first wall surface member and the second wall surface member.

[0016] Furthermore, the second stud is positioned laterally away from the opening when viewed from the front. Therefore, unlike when the second stud is positioned overlapping the opening when viewed from the front, there is no need to partition the storage space to avoid the second stud, and a large storage space can be ensured.

[0017] In the wall structure of the third invention, it is preferable that the wall structure further comprises an inner wall that is fitted inside the surrounding member and has an internal space that opens in both the perpendicular directions, and a bottom wall that is fixed to the end of the inner wall that is close to the second wall material so as to close the internal space, and further comprises a regulating member that regulates visibility of the surrounding member and the second wall material through the opening, and the regulating member is positioned away from the second wall material in the perpendicular direction (fourth invention).

[0018] According to the fourth aspect of the present invention, the restricting member restricts visibility of the surrounding member and the second wall surface material through the opening, i.e., the surrounding member and the second wall surface material, which are fire-resistant base materials for the wall, are hidden by the restricting member, thereby improving the design of the wall structure.

[0019] Furthermore, the restricting member fitted inside the surrounding member is positioned away from the second wall surface member in the perpendicular direction. Therefore, unlike when the restricting member is in contact with the second wall surface member, it is possible to suppress the propagation of vibration between the first wall surface member and the second wall surface member via the first stud, surrounding member, and restricting member.

[0020] Therefore, the design can be improved while maintaining sound insulation performance.

[0021] In the wall structure of the first or second invention, it is preferable that the wall structure further comprises a second partition made of a fire-resistant material, the second partition extending from the area below the opening to the area above the opening in a front view of the wall structure along the orthogonal direction, and fixed to the second opposing surface of the second wall material at a position away from the first wall material, the surrounding member, and the first partition, the surrounding member having a pair of upper and lower receiving portions that receive the second partition in the orthogonal direction from the side closer to the second wall material, and the wall structure further comprises another fire-resistant buffer member sandwiched between the receiving portions of the surrounding member and the second partition, the fire-resistant buffer member having flexibility higher than that of the surrounding member (fifth invention).

[0022] According to the fifth aspect of the present invention, a fire-resistant second stud is arranged so as to intersect with the opening in a front view, and the second stud is received in a receiving portion of the enclosing member, with another fire-resistant buffer member provided between the receiving portion and the second stud. Therefore, even when the second stud is arranged so as to intersect with the opening in a front view, the second stud and the other fire-resistant buffer member can prevent a decrease in fire resistance in the region of the enclosing member where the receiving portion is formed.

[0023] In any one of the wall structures of the first to fifth inventions, it is preferable that the wall structure further comprises a horizontal member extending laterally between the pair of first partition studs at a position spaced apart from the second wall member in the perpendicular direction, and that the end of the surrounding member closer to the first wall member is fixed to the horizontal member, while the end of the surrounding member closer to the second wall member is open to the outside along the surface direction of the second wall member (sixth invention).

[0024] According to the sixth aspect of the present invention, the end of the enclosing member closest to the first wall surface member is fixed to the pair of first partition studs as well as the horizontal member, which allows the enclosing member to be more securely fixed to the first partition studs. Meanwhile, the end of the enclosing portion closest to the second wall surface member is open to the outside along the surface direction of the second wall surface member—in other words, it is provided with edges that are disconnected from the first and second partition studs and the horizontal member. This allows the enclosing member to be more securely fixed to the first partition studs while maintaining soundproofing performance. [Effects of the Invention]

[0025] According to the present invention, it is possible to provide a wall structure that has a storage space inside and yet has relatively high sound insulation and fire resistance. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is an exploded perspective view showing a wall structure according to a first embodiment of the present invention, with a restricting member omitted; [Figure 2] FIG. 2 is a plan cross-sectional view of the wall structure of FIG. 1. [Figure 3]FIG. 2 is a side cross-sectional view of the wall structure of FIG. 1. [Figure 4] FIG. 4 is a view corresponding to FIG. 2 of a wall structure according to a second embodiment of the present invention. [Figure 5] 5A to 5C are plan cross-sectional views showing the wall structure of FIG. 4 cut at different positions in the vertical direction. DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes embodiments of the present invention 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.

[0028] Fig. 1 is an exploded perspective view showing a wall structure according to a first embodiment of the present invention, omitting a restricting member, Fig. 2 is a plan sectional view of the wall structure of Fig. 1, Fig. 3 is a side sectional view of the wall structure of Fig. 1.

[0029] 1 to 3, the wall structure 1 according to the first embodiment includes a first wall material 2 and a second wall material 3, a wall support mechanism 4 supporting the first wall material 2 and the second wall material 3, a space forming member 5 for forming a storage space inside the first wall material 2 and the second wall material 3, and a lid 6 for opening and closing the storage space.

[0030] The first wall material 2 and the second wall material extend in a predetermined vertical direction D1 and horizontal direction D2. The first wall material 2 has a first opposing surface 2a facing in one direction of an orthogonal direction D3 perpendicular to the vertical direction D1 and horizontal direction D2, and is fire-resistant. The second wall material 3 has a second opposing surface 3a facing the first opposing surface 2a in the orthogonal direction D3, and is fire-resistant.

[0031] Specifically, the first wall material 2 is formed by combining two plates 2A and 2B having the same thickness dimension in the thickness direction. Plate 2B is disposed near the second wall material 3 in the orthogonal direction D3 relative to plate 2A, and has a first opposing surface 2a. The first wall material 2 is also formed with an opening 2b extending from one surface to the other surface in the orthogonal direction. In this embodiment, opening 2b has a substantially rectangular shape with long sides extending in the vertical direction D1 when viewed from the front along the orthogonal direction. In this embodiment, the first wall material 2 is formed from gypsum board (preferably reinforced gypsum board), but the first wall material 2 may be formed from any fire-resistant material.

[0032] The second wall material 3 has the same thickness as the first wall material 2. Specifically, the second wall material 3 is formed by combining two plate materials 3A and 3B, each having the same thickness as the plate materials 2A and 2B, in the thickness direction. Plate material 3A is arranged in a position closer to the first wall material 2 in the orthogonal direction D3 to plate material 3B, and has a second opposing surface 3a.

[0033] The wall support mechanism 4 includes a pair of runners 4a, 4b provided on an installation surface (for example, the upper or lower surface of a beam, a floor surface, a ceiling surface, etc.; the same applies below), a pair of first partition posts 4c erected on the runners 4a, a pair of second partition posts 4d erected on the runners 4b, and a pair of horizontal members 4e extending in the horizontal direction D2 across the pair of first partition posts 4c and spaced apart in the vertical direction D1. The pair of runners 4a, 4b are arranged on the installation surface extending in the horizontal direction D2 and spaced apart in the perpendicular direction D3.

[0034] The runner 4a has a bottom plate 4a1, an upright portion 4a2 rising from one end of the bottom plate 4a1 in the orthogonal direction D3, and an upright portion 4a3 rising from the other end of the bottom plate 4a1 in the orthogonal direction D3. The bottom plate 4a1 is a plate-like portion that is placed along the installation surface. The upright portions 4a2 and 4a3 are used to position both first studs 4c in the orthogonal direction D3.

[0035] The runner 4b has a bottom plate 4b1, an upright portion 4b2 rising from one end of the bottom plate 4b1 in the orthogonal direction D3, and an upright portion 4b3 rising from the other end of the bottom plate 4b1 in the orthogonal direction D3. The bottom plate 4b1 is a plate-like portion that is placed along the installation surface. The upright portions 4b2 and 4b3 are used to position both second studs 4d in the orthogonal direction D3.

[0036] The pair of first studs 4c extend in the vertical direction D1 and are spaced apart from each other in the horizontal direction D2. The pair of first studs 4c are positioned at the same position in the perpendicular direction D3. Specifically, the lower end of each first stud 4c is inserted between the standing portions 4a2 and 4a3 of the runner 4a. In this state, the front surface (the downward surface in FIG. 2) of the lower end of each first stud 4c is fixed to the standing portion 4a2 while contacting the back surface (the upward surface in FIG. 2) of the standing portion 4a2 of the runner 4a. The back surface (the upward surface in FIG. 2) of the lower end of each first stud 4c is fixed to the standing portion 4a3 while contacting the front surface (the downward surface in FIG. 2) of the standing portion 4a3 of the runner 4a. Furthermore, the first partition 4c is provided on both sides of the opening 2b of the first wall surface member 2 in the horizontal direction D2 so that the opening 2b is sandwiched between the pair of first partition 4c in the horizontal direction D2. Specifically, the surfaces of the pair of first partition 4c facing each other in the horizontal direction D2 are spaced apart at a distance greater than the distance between the inner surfaces of the opening 2b facing each other in the horizontal direction D2. With this arrangement, the protrusion dimension P1 (see FIG. 2) of the first wall surface member 2 protruding from the first partition 4c in the horizontal direction D2 is equal to the thickness dimension of the enclosing member 5a, which will be described later. Although not shown, the upper ends of the pair of first partition 4c are also fixed to the installation surface (ceiling surface, underside of a beam, etc.) via runners 4a.

[0037] The pair of second studs 4d extend in the vertical direction D1 and are spaced apart from each other in the horizontal direction D2. The pair of second studs 4d are positioned at the same position in the perpendicular direction D3. Specifically, the lower end of each second stud 4d is inserted between the upright portions 4b2 and 4b3 of the runner 4b. In this state, the front surface (the downward surface in FIG. 2) of the lower end of each second stud 4d is fixed to the upright portion 4b2 while contacting the back surface (the upward surface in FIG. 2) of the upright portion 4b2 of the runner 4b. The back surface (the upward surface in FIG. 2) of the lower end of each second stud 4d is fixed to the upright portion 4b3 while contacting the front surface (the downward surface in FIG. 2) of the upright portion 4b3 of the runner 4b. As described above, the runners 4b are arranged spaced apart from each other in the perpendicular direction D3 relative to the runner 4a. Therefore, the pair of second partition studs 4d are arranged at a distance from the pair of first partition studs 4c in the direction perpendicular to them. The second partition studs 4d are provided on both sides of the pair of first partition studs 4c in the horizontal direction D2 so that the pair of first partition studs 4c are sandwiched between the pair of second partition studs 4d in the horizontal direction D2. Although not shown in the figure, the upper ends of the pair of second partition studs 4d are also fixed to the installation surface (ceiling surface, underside of a beam, etc.) via runners 4b.

[0038] The pair of horizontal members 4e are provided between the opposing surfaces of the pair of first studs 4c. The horizontal members 4e are provided on both sides of the opening 2b of the first wall member 2 in the vertical direction D1 so that the opening 2b is sandwiched between the pair of horizontal members 4e in the vertical direction D1 in a front view. Specifically, the opposing surfaces of the pair of horizontal members 4e in the vertical direction D1 are spaced apart at a distance greater than the distance between the opposing inner surfaces of the opening 2b. This arrangement results in a protruding dimension P2 (see FIG. 3) of the first wall member 2 protruding from the horizontal members 4e in the vertical direction D1 being equal to the thickness of the long side portion 5a1 and the short side portion 5a2 of the enclosing member 5a, which will be described later.

[0039] As shown in FIG. 2 , the first partition 4c is fixed to the first opposing surface 2a of the first wall member 2, spaced apart from the second opposing surface 3a of the second wall member 3 in the orthogonal direction D3. The second partition 4d is fixed to the second opposing surface 3a of the second wall member 3, at a position offset from the opening 2b in the lateral direction D2 in a front view of the wall structure 1 seen along the orthogonal direction D3, and at a position spaced apart from the first wall member 2, a surrounding member 5a (described later), and the first partition 4c. The horizontal member 4e extends laterally between the pair of first partition studs 4c, at a position spaced apart from the second wall member 3 in the orthogonal direction D3. The opening 2b of the first wall member 2 is formed in the region between the pair of first partition studs 4c and in the region covered by the second wall member 3 in the orthogonal direction D3.

[0040] Referring to Figures 1 to 3, the space forming member 5 has a surrounding member 5a that captures the opening 2b between the first wall member 2 and the second wall member 3, a fire-resistant buffer member 5b that is provided between the surrounding member 5a and the second wall member 3, and a restricting member 5c that restricts visibility of the surrounding member 5a and the second wall member 3 through the opening 2b.

[0041] The surrounding member 5a extends in the orthogonal direction D3 from the opening edge 2c of the first wall member 2 toward the second wall member 3, surrounding the periphery of the opening 2b in the first wall member 2, and is fixed to a pair of first partition studs 4c. Specifically, the surrounding member 5a has a pair of long side portions 5a1 provided along the pair of long sides of the opening 2b at the opening edge 2c, and a pair of short side portions 5a2 provided along the pair of short sides of the opening 2b at the opening edge 2c. The pair of long side portions 5a1 are fixed to the pair of first partition studs 4c with the surrounding member 5a inserted into the space surrounded by the pair of first partition studs 4c and the pair of horizontal members 4e, and with the end faces of the surrounding member 5a in close contact with the opening edge 2c. Similarly, the pair of short sides 5a2 are fixed to the pair of horizontal members 4e with the enclosing member 5a inserted into the space enclosed by the pair of first partition studs 4c and the pair of horizontal members 4e, and with the end face of the enclosing member 5a in close contact with the opening edge 2c. In this way, the end of the enclosing member 5a closer to the first wall member 2 is fixed to the pair of first partition studs 4c and the horizontal members 4e. On the other hand, the end of the enclosing member 5a closer to the second wall member 3 is open to the outside along the surface direction of the second wall member 3; in other words, it is fixed with its edge separated from (not fixed to) the first partition 4c, the second partition stud 4d, and the horizontal member 4e.

[0042] The surrounding member 5a is fire-resistant. Specifically, the surrounding member 5a in this embodiment is made of gypsum board, similar to the first wall surface material 2 and the second wall surface material 3. The surrounding member 5a is not limited to being made of gypsum board, as long as it is fire-resistant. The thickness of the surrounding member 5a along the surface direction of the first wall surface material 2 (in this embodiment, the thickness of the long side portion 5a1 and the short side portion 5a2) is equal to the thickness of the first wall surface material 2 and the second wall surface material 3 along the orthogonal direction D3. The thickness of the surrounding member 5a along the surface direction of the first wall surface material 2 may be greater than the thickness of the first wall surface material 2 and the second wall surface material 3 along the orthogonal direction D3. In this case, the protrusion dimension P1 (see Figure 2) of the first wall material 2 from the first stud 4c and the protrusion dimension P2 (see Figure 3) of the first wall material 2 from the cross member 4e must be adjusted to match the thickness dimension of the surrounding member 5a.

[0043] The fireproof buffering member 5b is sandwiched in the orthogonal direction D3 between the second wall surface member 3 and a surrounding opposing surface 5a3 of the surrounding member 5a that faces the second wall surface member 3. The fireproof buffering member 5b is fire-resistant and has flexibility higher than that of the surrounding member 5a. Specifically, the fireproof buffering member 5b in this embodiment is made of ceramic wool or rock wool. Note that the material constituting the fireproof buffering member 5b is not limited to the above materials as long as it has fire resistance and flexibility higher than that of the surrounding member 5a.

[0044] The restricting member 5c has an inner peripheral wall 5c1 that is fitted inside the enclosing member 5a and has an internal space that is open in both directions in the orthogonal direction D3, and a bottom wall 5c2 that is fixed to an end of the inner peripheral wall 5c1 that is close to the second wall surface member 3 so as to close the internal space. The restricting member 5c is also disposed away from the second wall surface member 3 in the orthogonal direction D3. Specifically, in this embodiment, the bottom wall 5c2 of the restricting member 5c is disposed away from the second wall surface member 3 in the orthogonal direction. Furthermore, in this embodiment, the restricting member 5c is made of a steel plate, which contributes to the fire resistance of the wall structure 1.

[0045] The lid body 6 is for closing the opening 2b of the first wall surface member 2. Specifically, the lid body 6 has a lid main body 6a for covering the opening 2b in the perpendicular direction, and an inserted portion 6b that is inserted into the opening 2b with the opening 2b covered by the lid main body 6a. In this embodiment, the lid body 6 is configured as a member separate from other components (e.g., the restricting member 5c). On the other hand, the lid body 6 may be attached so as to be movable (e.g., rotatable or slidable) relative to other components so as to be switchable between an open state and a closed state of the opening 2b.

[0046] As described above, according to the first embodiment, the storage space can be partitioned by the surrounding member 5a, the second wall member 3, and the fire-resistant buffer member 5b sandwiched therebetween. Furthermore, since the surrounding member 5a, the second wall member 3, and the fire-resistant buffer member 5d that partition the storage space all have fire resistance, the wall structure 1 can be realized with high fire resistance.

[0047] Furthermore, the first stud 4c to which the first wall material 2 is fixed is disposed away from the second wall material 3 in the orthogonal direction D3, and the fire-resistant buffering member 5b has greater flexibility than the surrounding member 5a. This effectively prevents vibrations generated in either the first wall material 2 or the second wall material 3 from propagating to the other. Therefore, a wall structure 1 with higher sound insulation performance can be achieved compared to when the first stud 4c is fixed to both the first wall material 2 and the second wall material 3, or when the surrounding member 5a and the second wall material 3 are in direct contact without the fire-resistant buffering member 5b interposed therebetween.

[0048] According to the first embodiment, with regard to the thicknesses of the first wall surface material 2, the second wall surface material 3, and the surrounding member 5a, which are all made of plate materials of the same material, the thickness dimension of the surrounding member 5a is set to be equal to or greater than the thickness dimensions of the first wall surface material 2 and the second wall surface material 3. Therefore, the fire resistance performance of the surrounding member 5a surrounding the opening 2b can be set to be equal to or greater than the fire resistance performance of the region other than the opening 2b in the first wall surface material 2 and the fire resistance performance of the region covering the opening 2b in the second wall surface material 3. Therefore, a decrease in fire resistance performance can be suppressed compared to when the opening 2b is not formed in the wall structure 1 (when the wall structure 1 is made up of only the first wall surface material 2 and the second wall surface material 3).

[0049] According to the first embodiment, the second stud 4d fixed to the second wall surface material 3 is positioned away from the first wall surface material 2 and the first stud 4c. Therefore, vibration propagation between the first wall surface material 2 and the second wall surface material 3 can be suppressed compared to when the second stud 4d is in contact with the first wall surface material 2 or the first stud 4c.

[0050] Furthermore, the second stud 4d is positioned away from the opening 2b in the lateral direction D2 when viewed from the front. Therefore, unlike when the second stud 4d is positioned so that it overlaps the opening 2b when viewed from the front, there is no need to partition the storage space to avoid the second stud 4d, and a large storage space can be ensured.

[0051] According to the first embodiment, the restricting member 5c restricts the visibility of the surrounding member 5a and the second wall surface material 3 through the opening 2b, that is, the surrounding member 5a and the second wall surface material 3, which are fire-resistant base materials for the wall, are hidden by the restricting member 5c. Therefore, the design of the wall structure 1 can be improved.

[0052] Furthermore, the restricting member 5c fitted inside the surrounding member 5a is disposed at a distance in the orthogonal direction D3 from the second wall surface member 3. Therefore, unlike when the restricting member 5c is in contact with the second wall surface member 3, it is possible to suppress the propagation of vibration between the first wall surface member 2 and the second wall surface member 3 via the first stud 4c, the surrounding member 5a, and the restricting member 5c.

[0053] Therefore, the design can be improved while maintaining sound insulation performance.

[0054] According to the first embodiment, the end of the surrounding member 5a closest to the first wall surface member 2 is fixed to the pair of first studs 4c as well as the horizontal member 4e, which allows the surrounding member 5a to be more securely fixed to the first studs 4c. On the other hand, the end of the surrounding member 5a closest to the second wall surface member 3 is open to the outside along the surface direction of the second wall surface member 3; that is, it is provided in a state where it is separated from the first studs 4c, the second studs 4d, and the horizontal member 4e. Therefore, the surrounding member 5a can be more securely fixed to the first studs 4c while maintaining sound insulation performance.

[0055] In the first embodiment, the second partition 4d extends in the vertical direction D1 at a position offset from the opening 2b in the horizontal direction D2 when viewed from the front and away from the first wall member 2, the surrounding member 5a, and the first partition 4c, but the arrangement of the second partition 4d is not limited to this.

[0056] Fig. 4 is a view of a wall structure according to a second embodiment of the present invention, corresponding to Fig. 2. Fig. 5 is a plan sectional view showing the wall structure of Fig. 4 cut at a different position in the vertical direction.

[0057] Referring to Figures 4 and 5, the wall structure 1A according to the second embodiment differs from the first embodiment in that the second stud 4dA extends from the area below the opening 2b to the area above the opening 2b when viewed from the front.

[0058] The second partition 4dA is fixed to the second opposing surface 3a of the second wall member 3 at a position away from the first wall member 2, the surrounding member 5a, and the first partition 4c. The second partition 4dA is fire-resistant. Specifically, the second partition 4dA is made of steel plate.

[0059] Due to the different arrangement of the second studs 4dA as described above, the second embodiment also differs from the first embodiment in the configuration of the enclosing member 5aA. Specifically, the short side 5a2 of the enclosing member 5aA has a receiving portion 5a2a that receives the second stud 4dA in the perpendicular direction from the side closer to the second wall surface member 3. To ensure fire resistance between the receiving portion 5a2a and the second stud 4dA, the wall structure 1A further includes another fire-resistant buffer member 5d that is sandwiched between the receiving portion 5a2a and the second stud 4dA. The other fire-resistant buffer member 5d has greater flexibility than the enclosing member 5a to suppress vibration propagation from the first wall surface member 2 to the second wall surface member 3.

[0060] Furthermore, the wall structure 1A of the second embodiment includes the same restricting member 5c as in the first embodiment. However, in the second embodiment, the space (thickness of the wall structure 1A) for installing the restricting member 5c is insufficient due to the second stud 4dA.

[0061] Therefore, in order to ensure installation space for the restricting member 5c, the wall structure 1A further includes a pair of auxiliary columns 7 and auxiliary surface members 8 fixed to the pair of auxiliary columns 7. Note that the auxiliary columns 7 and auxiliary surface members 8 for the wall extension may or may not have fire resistance.

[0062] The auxiliary panel 8 has an opening 8a of the same size as the opening 2b at the same position as the opening 2b when viewed from the front.

[0063] The pair of auxiliary columns 7 extend vertically between the first wall surface member 2 and the auxiliary surface member 8 and are spaced apart from each other in the horizontal direction. Specifically, the pair of auxiliary columns 7 are arranged so that the side surfaces of the pair of auxiliary columns 7 that face each other in the horizontal direction D2 are positioned on the same plane as the inner side surfaces of the opening 8a that face each other in the horizontal direction D2.

[0064] As described above, according to the wall structure 1A, the fire-resistant second stud 4dA is arranged so as to intersect with the opening 2b in a front view, and the second stud 4dA is received in the receiving portion 5a2a of the enclosing member 5a, with another fire-resistant buffering member 5d provided between the receiving portion 5a2a and the second stud 4dA. Therefore, even when the second stud 4dA is arranged so as to intersect with the opening 2b in a front view, the second stud 4dA and the another fire-resistant buffering member 5d can prevent a decrease in fire resistance in the region of the enclosing member 5a where the receiving portion 5a2a is formed. [Explanation of symbols]

[0065] 1, 1A wall structure 2. First wall material 2a 1st facing surface 2b opening 2c Opening edge 3 Second wall material 3a Second facing surface 4c First stud 4d, 4dA Second stud 4e Horizontal member 5a, 5aA Surrounding member 5a2a receptor 5a3 Opposite surface 5b Fire-resistant buffer material 5c Regulatory member 5d Fire-resistant buffer material D1 vertical direction D2 Lateral direction D3 Orthogonal direction

Claims

1. A wall structure comprising: A first wall surface material extending in a predetermined vertical direction and a horizontal direction, having a first opposing surface facing one of the orthogonal directions orthogonal to the vertical direction and the horizontal direction, and having fire resistance; a second wall surface material having a second opposing surface opposing the first opposing surface in the direction perpendicular to the first opposing surface and having fire resistance; a pair of first studs extending in the vertical direction and spaced apart from each other in the horizontal direction, and fixed to the first opposing surface while spaced apart from the second opposing surface in the orthogonal direction; a fire-resistant surrounding member that extends from the opening edge portion of the first wall member in the perpendicular direction toward the second wall member around the entire periphery of the opening edge portion of the first wall member that surrounds the periphery of an opening formed in the region between the pair of first partition studs in the first wall member and in the region that is covered in the perpendicular direction by the second wall member and is fixed to the pair of first partition studs; A wall structure comprising: a fire-resistant buffer member sandwiched in the orthogonal direction between the surrounding opposing surface of the surrounding member facing the second wall member and the second wall member, the fire-resistant buffer member having fire resistance and flexibility higher than that of the surrounding member.

2. the first wall member, the second wall member, and the surrounding member are made of plate materials of the same material; The wall structure according to claim 1, wherein the thickness dimension of the surrounding member along the surface direction of the first wall member is equal to or greater than the thickness dimension of the first wall member and the second wall member along the perpendicular direction.

3. 3. The wall structure according to claim 1, further comprising a second partition stud extending in the vertical direction at a position laterally offset from the opening in a front view of the wall structure along the perpendicular direction and away from the first wall member, the surrounding member, and the first partition stud, and fixed to the second opposing surface of the second wall member.

4. an inner peripheral wall fitted inside the surrounding member and having an internal space that opens in both the perpendicular directions; and a bottom wall fixed to an end of the inner peripheral wall that is close to the second wall member so as to close the internal space, and further comprising a restricting member that restricts visibility of the surrounding member and the second wall member through the opening; The wall structure according to claim 3 , wherein the restricting member is disposed spaced apart from the second wall surface member in the orthogonal direction.

5. a second partition wall member that extends from a region below the opening to a region above the opening in a front view of the wall structure along the orthogonal direction, and is fixed to the second opposing surface of the second wall member at a position spaced apart from the first wall member, the surrounding member, and the first partition wall, and is made of a fire-resistant material; the surrounding portion has a pair of upper and lower receiving portions that receive the second stud in the orthogonal direction from the side closer to the second wall surface member, 3. The wall structure according to claim 1, further comprising: another fire-resistant buffer member sandwiched between the receiving portion of the surrounding portion and the second stud, the fire-resistant buffer member having fire resistance and flexibility higher than that of the surrounding portion.

6. a horizontal member extending laterally between the pair of first studs at a position spaced apart from the second wall member in the orthogonal direction; 3. The wall structure according to claim 1, wherein an end of the surrounding member closer to the first wall member is fixed to the cross member, while an end of the surrounding member closer to the second wall member is open to the outside along the surface direction of the second wall member.

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