Wall panel

Abstract

To provide a wall panel which includes at least two or more layers and can improve flame-blocking.SOLUTION: A wall panel for constituting a non-load-bearing wall of a building includes: a wood layer that is arranged on one side of the wall panel in a thickness direction and contains wood; and a non-combustible layer that is arranged on the other side of the wall panel in the thickness direction. The non-combustible layer includes: a plate-shaped first non-combustible board that is formed of a non-combustible material; a plate-shaped second non-combustible board that overlaps with the first non-combustible board in the thickness direction of the wall panel, is arranged alongside the first non-combustible board along a cross direction that crosses the thickness direction of the wall panel, and is formed of a non-combustible material; and a fire-resistant joiner that is provided between the first non-combustible board and the second non-combustible board and is formed of a fire-resistant material.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to wall panels for constructing non-load-bearing walls of a building. [Background technology]

[0002] Conventionally, various efforts have been made to improve the fire resistance of wooden walls. For example, Patent Document 1 discloses a structural material that includes a load-bearing layer made of wood sufficient to support a long-term load, a fire-stopping layer that is placed around the periphery of the load-bearing layer and has a heat insulating material (non-combustible wood, calcium silicate board, rock wool, glass wool, etc.), and a burning margin layer that is placed around the periphery of the fire-stopping layer and is made of wood. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-036457 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the fire-stopping layer may be divided into multiple components, such as an upper plate and a lower plate, which may cause the flame to pass between the upper and lower plates in the event of a fire in the building.

[0005] The present disclosure has been made in view of the above-mentioned problems, and aims to provide a wall panel that includes at least two layers and can improve flame resistance.

[0006] Incidentally, walls may include non-load-bearing walls that are considered not to bear loads as part of the structure of a building. Non-load-bearing walls differ from load-bearing walls in terms of the structural performance and fire resistance required of a building. For this reason, it is economically unreasonable to provide non-load-bearing walls with the same fire resistance as load-bearing walls. The wall panel according to the present disclosure is applied to construct non-load-bearing walls of a building (the technology disclosed in Patent Document 1 is directed to load-bearing walls). [Means for solving the problem]

[0007] In order to achieve the above object, the wall panel according to the present disclosure is a wall panel for constituting a non-load-bearing wall of a building, and comprises: a wood layer containing wood arranged on one side of the wall panel in the thickness direction; and a non-combustible layer arranged on the other side of the wall panel in the thickness direction, wherein the non-combustible layer comprises: a first non-combustible board in the shape of a plate made of a non-combustible material; a second non-combustible board in the shape of a plate made of a non-combustible material that overlaps with the first non-combustible board in the thickness direction of the wall panel and is arranged alongside the first non-combustible board along a cross direction that crosses the thickness direction of the wall panel; and a fire-resistant joiner provided between the first non-combustible board and the second non-combustible board and made of a fire-resistant material. [Effects of the Invention]

[0008] According to the wall panel of the present disclosure, it includes at least two layers, and can improve the flame resistance. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating a schematic configuration of a building having a first exterior wall constructed of wall panels according to some embodiments. FIG. [Figure 2] 1 is a diagram showing a schematic configuration of a wall panel according to a first embodiment. FIG. [Figure 3] 1A-1C are schematic diagrams illustrating wall panel configurations according to some embodiments. [Figure 4] FIG. 10 is a diagram schematically showing the configuration of a wall panel according to a second embodiment. [Figure 5] 1A and 1B are diagrams schematically illustrating the configuration of a non-combustible layer according to some embodiments. [Figure 6] 1A and 1B are diagrams schematically illustrating the configuration of a non-combustible layer according to some embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0010] The wall panel according to the embodiment of the present disclosure will be described below with reference to the drawings. The embodiment shows one aspect of the present disclosure, but does not limit the present disclosure and can be modified as desired within the scope of the technical concept of the present disclosure.

[0011] <Building> Fig. 1 is a diagram schematically illustrating the configuration of a building 200 including a first exterior wall 100A constructed of wall panels 1 according to some embodiments. In the example illustrated in Fig. 1, the building 200 includes the exterior wall 100, a roof 102, and a plurality of floors 104 arranged at intervals along the vertical direction D1. Specifically, the building 200 is an eight-story building erected on ground G. The building structure of the building 200 is not particularly limited, and any building structure such as wood, steel frame, reinforced concrete, or steel-reinforced concrete may be used.

[0012] The building 200 is surrounded by an exterior wall 100 and a roof 102, forming an interior space 201. The exterior wall 100 includes an interior wall surface 106 facing the interior space 201 of the building 200, and an exterior wall surface 108 facing an exterior space 203 of the building 200.

[0013] 1, the building 200 includes a first exterior wall 100A (100) and a second exterior wall 100B (100). The first exterior wall 100A is a non-load-bearing wall among the walls of the building 200 that is considered not to bear loads as part of the structure of the building 200 (not considered effective in terms of structural design). The first exterior wall 100A may be formed by a single wall panel 1, which will be described later, or may be formed by connecting multiple wall panels 1 together.

[0014] Second exterior wall 100B is a load-bearing wall among the walls of building 200 that is considered to bear the load as part of the structure of building 200, and resists both horizontal forces due to earthquakes and the like, and vertical forces due to the weight of building 200 and the like. Second exterior wall 100B may be connected to roof 102 and floor 104 via beams 112, or may be connected to roof 102 and floor 104 without beams 112.

[0015] 1, the building 200 further includes an inner wall 110 (partition wall) that divides the inner space 201 and is a non-load-bearing wall. Note that the building 200 may also include an inner wall (partition wall) that divides the inner space 201 and is a load-bearing wall.

[0016] The wall panel 1 according to the present disclosure will be described below. The wall panel 1 constitutes a non-load-bearing wall (first exterior wall 100A) of the building 200 as described above.

[0017] <Wall panel> (First embodiment) Fig. 2 is a diagram schematically illustrating the configuration of a wall panel 1A(1) according to the first embodiment. As shown in Fig. 2, the wall panel 1A includes a wood layer 2 and a non-combustible layer 4A. In the first embodiment, the wall panel 1A further includes a second wood layer 6, giving it a three-layer structure.

[0018] The wood layer 2 is disposed on one side in the thickness direction (hereinafter referred to as "thickness direction D2") of the wall panel 1A. In the first embodiment, the wood layer 2 is disposed facing the outer space 203 and constitutes the outer layer of the wall panel 1A.

[0019] The wood layer 2 includes wood W. Specifically, the wood layer 2 is formed of a wood material, known as CLT (Cross Laminated Timber), in which plank-shaped pieces of wood W, such as sawn boards, are stacked so that the grain directions of the wood W intersect at right angles to form a board shape. In some embodiments, the wood layer 2 includes plywood or LVL (Laminated Veneer Lumber). In some embodiments, the wood layer 2 is formed of a wood material, known as NLT (Nail Laminated Timber), in which multiple long pieces of wood W are stacked end-on along the short side of the wood W to form a board shape.

[0020] The non-combustible layer 4A is disposed on the other side in the thickness direction D2 of the wood layer 2. In the first embodiment, the non-combustible layer 4A is located closer to the inner space 201 than the wood layer 2.

[0021] The non-combustible layer 4A includes a first non-combustible board 8, a second non-combustible board 10, and a fire-resistant joiner 12. The first non-combustible board 8 is formed of a non-combustible material M and has a board shape. In the first embodiment, the first non-combustible board 8 is formed of wood W and cement (non-combustible material M), for example, a wood wool cement board or a wood chip cement board. The wood wool cement board is a board-shaped member made by mixing cement with wood wool cut into long, thin ribbons of wood W. The wood chip cement board is a board-shaped member made by mixing cement with thin wood chips of wood W. Note that the present disclosure is not limited to the first non-combustible board 8 being a wood wool cement board or a wood chip cement board. In some embodiments, the first non-combustible board 8 is, for example, a gypsum board formed mainly of gypsum (non-combustible material M). In some embodiments, the first non-combustible board 8 is a calcium silicate board (calcium silicate board) made mainly of lime and silica stone (non-combustible material M).

[0022] The second non-combustible board 10 is made of a non-combustible material M and has a board shape. In the first embodiment, the second non-combustible board 10 is made of wood W and cement (non-combustible material M), and is, for example, a wood wool cement board or a wood chip cement board. In some embodiments, the second non-combustible board 10 is, for example, a gypsum board. In some embodiments, the second non-combustible board 10 is a calcium silicate board.

[0023] The second non-combustible plate 10 overlaps the first non-combustible plate 8 in the thickness direction D2. The second non-combustible plate 10 is arranged side by side with the first non-combustible plate 8 along the intersecting direction Dx that intersects with the thickness direction D2. In the first embodiment, the vertical direction D1 is the intersecting direction Dx, and the second non-combustible plate 10 is arranged side by side with the first non-combustible plate 8 along the vertical direction D1. The second non-combustible plate 10 is located higher than the first non-combustible plate 8. The dimension of the second non-combustible plate 10 in the thickness direction D2 is approximately the same as that of the first non-combustible plate 8. The first non-combustible plate 8 and the second non-combustible plate 10 overlap each other in the left-right direction of the wall panel 1 (hereinafter referred to as the "left-right direction D3"), and a joint gap 11 is formed between the first non-combustible plate 8 and the second non-combustible plate 10. The left-right direction D3 is perpendicular to both the up-down direction D1 and the thickness direction D2.

[0024] The fire-resistant joiner 12 is made of a fire-resistant material such as metal, and is provided between the first non-combustible board 8 and the second non-combustible board 10. In the first embodiment, the fire-resistant joiner 12 includes an insertion portion 14 extending along the thickness direction D2 and inserted into the joint gap 11, and a hat portion 16 connected to the other end of the insertion portion 14 in the thickness direction D2 and configured to have a larger periphery than the insertion portion 14. Such a fire-resistant joiner 12 has a T-shape when viewed from the left-right direction D3.

[0025] The second wood layer 6 is disposed on the opposite side of the wood layer 2 in the thickness direction D2, with the non-combustible layer 4A sandwiched therebetween. In the first embodiment, as illustrated in FIG. 2, the second wood layer 6 is disposed facing the interior space 201 and constitutes an inner layer of the wall panel 1A. The second wood layer 6 includes wood W. Specifically, the second wood layer 6 is formed of CLT so as to have a board shape. In some embodiments, the second wood layer 6 is formed of plywood, LVL, or NLT.

[0026] In the first embodiment, as shown in FIG. 2, the second wood layer 6 has a flame-retardant portion 18 impregnated with a flame retardant X. The flame retardant X is, for example, a phosphorus-based flame retardant, a nitrogen-based flame retardant, a phosphorus-nitrogen-based flame retardant, or a boric acid-based flame retardant. The flame-retardant portion 18 is located on the inner space 201 side of the second wood layer 6. Although not shown, a flame-retardant film made of the flame retardant X may be provided on the surface of the second wood layer 6 facing the inner space 201.

[0027] In the first embodiment, as illustrated in Figure 2, the non-combustible layer 4A further includes a filling portion 20 formed by filling a gap 13 defined by the second wood layer 6, the first non-combustible board 8, and the second non-combustible board 10 with a grout material such as an adhesive or mortar for adhering the non-combustible layer 4A to the second wood layer 6.

[0028] The following describes the functions and effects of the wall panel 1A according to the first embodiment. As illustrated in Fig. 2, the non-combustible layer 4A of the wall panel 1A is not composed of a single plate-like member, but may include a first non-combustible board 8 and a second non-combustible board 10 arranged along the vertical direction D1. Therefore, if a fire breaks out in the interior space 201 of the building 200, there is a risk that the flames will pass through the joint gaps 11.

[0029] To address this concern, according to the first embodiment, the non-combustible layer 4A includes a fire-resistant joiner 12 provided between the first non-combustible board 8 and the second non-combustible board 10, which prevents flames from passing through the joint gaps 11 in the event of a fire occurring in the inner space 201 or the outer space 203. This makes it possible to provide a wall panel 1A that includes at least two layers and has improved flame resistance.

[0030] According to the first embodiment, it is possible to improve the flame resistance of the wall panel 1A, which has a three-layer structure in which the non-combustible layer 4A is sandwiched between the wood layer 2 and the second wood layer 6. Furthermore, because the wood layer 2 is arranged facing the outer space 203 and the second wood layer 6 is arranged facing the inner space 201, the appearance of the wall panel 1A can be made to have a wood grain pattern, improving the design of the wall panel 1A.

[0031] In the first embodiment, the wall panel 1A is composed of three layers, namely, the wood layer 2, the non-combustible layer 4A, and the second wood layer 6, in that order from one side in the thickness direction D2 (the outer space 203). However, the present disclosure is not limited to this configuration. The wall panel 1 may be composed of at least two layers, including the wood layer 2 and the non-combustible layer 4. FIG. 3 is a diagram schematically illustrating the configuration of the wall panel 1 according to some embodiments. In the configuration illustrated in FIG. 3, the wall panel 1 is composed of two layers, the wood layer 2 and the non-combustible layer 4A. The wood layer 2 is disposed facing the outer space 203, and the non-combustible layer 4A is disposed facing the inner space 201. In the configuration illustrated in FIG. 3, the wood layer 2 has a flame-retardant portion 18 impregnated therein with a flame retardant X.

[0032] According to the first embodiment, the second wood layer 6 is provided with the flame-retardant portion 18, which improves the fire resistance of the wall panel 1A.

[0033] In the first embodiment, the flame-retardant portion 18 is formed in the second wood layer 6, but the present disclosure is not limited to this. In some embodiments, the flame-retardant portion 18 is formed in the wood layer 2. In some embodiments, the flame-retardant portion 18 is formed in each of the wood layer 2 and the second wood layer 6.

[0034] According to the first embodiment, both the first non-combustible board 8 and the second non-combustible board 10 are wood wool cement boards or wood chip cement boards, so that the manufacturing costs can be reduced compared to, for example, when both the first non-combustible board 8 and the second non-combustible board 10 are calcium silicate boards.

[0035] (Second embodiment) A wall panel 1B(1) according to a second embodiment of the present disclosure will be described. In the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0036] Fig. 4 is a diagram schematically illustrating the configuration of a wall panel 1B according to the second embodiment. As shown in Fig. 4, the wall panel 1B includes a wood layer 2 and a non-combustible layer 4B. In the second embodiment, the wall panel 1B further includes a second wood layer 6, forming a three-layer structure. The wood layer 2 and the second wood layer 6 have the same configuration as those described in the first embodiment, and therefore their description will be omitted.

[0037] The non-combustible layer 4B is disposed on the other side in the thickness direction D2 of the wood layer 2. In the second embodiment, the non-combustible layer 4B is located closer to the inner space 201 than the wood layer 2 and closer to the outer space 203 than the second wood layer 6.

[0038] The non-combustible layer 4B includes a first non-combustible board 40, a second non-combustible board 42, a third non-combustible board 44, and a fourth non-combustible board 46. Each of the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 is formed from a non-combustible material M and has a board shape. In the second embodiment, each of the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 is formed from wood W and cement (non-combustible material M), and is, for example, a wood wool cement board or a wood chip cement board. Note that each of the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 may be formed from a mutually different non-combustible material M. In some embodiments, at least one of the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 is gypsum board. In some embodiments, at least one of the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 is calcium silicate board.

[0039] The second non-combustible plate 42 overlaps with the first non-combustible plate 40 in the thickness direction D2. The second non-combustible plate 42 is arranged alongside the first non-combustible plate 40 along a cross direction Dx that crosses the thickness direction D2. In the second embodiment, the up-down direction D1 is the cross direction Dx, and the second non-combustible plate 42 is arranged alongside the first non-combustible plate 40 along the up-down direction D1. The second non-combustible plate 42 is located above the first non-combustible plate 40. The dimension of the second non-combustible plate 42 in the thickness direction D2 is approximately the same as that of the first non-combustible plate 40. The first non-combustible plate 40 and the second non-combustible plate 42 overlap with each other in the left-right direction D3, and a gap (hereinafter referred to as a first joint gap 41) is formed between the first non-combustible plate 40 and the second non-combustible plate 42.

[0040] In the embodiment illustrated in FIG. 4, the non-combustible layer 4B includes a fifth non-combustible plate 52 formed of a non-combustible material M and having a plate shape. The fifth non-combustible plate 52 overlaps with the second non-combustible plate 42 in the thickness direction D2. The fifth non-combustible plate 52 is arranged alongside the first non-combustible plate 40 and the second non-combustible plate 42 in the up-down direction D1. The fifth non-combustible plate 52 is located above the second non-combustible plate 42. The fifth non-combustible plate 52 has substantially the same dimension in the thickness direction D2 as the first non-combustible plate 40 and the second non-combustible plate 42. A third joint gap 51 is formed between the fifth non-combustible plate 52 and the second non-combustible plate 42.

[0041] The third non-combustible plate 44 is positioned in a position in the thickness direction D2 that is offset from the first non-combustible plate 40. In the second embodiment, the third non-combustible plate 44 is positioned closer to the outer space 203 in the thickness direction D2 than the first non-combustible plate 40 and the second non-combustible plate 42. The third non-combustible plate 44 is disposed so as to straddle both the first non-combustible plate 40 and the second non-combustible plate 42 in the up-down direction D1.

[0042] The fourth non-combustible plate 46 overlaps with the third non-combustible plate 44 in the thickness direction D2. The fourth non-combustible plate 46 is arranged alongside the third non-combustible plate 44 in the up-down direction D1 (transverse direction Dx). The fourth non-combustible plate 46 is positioned higher than the third non-combustible plate 44. The fourth non-combustible plate 46 has substantially the same dimension in the thickness direction D2 as the third non-combustible plate 44. The third non-combustible plate 44 and the fourth non-combustible plate 46 overlap with each other in the left-right direction D3, and a gap (hereinafter referred to as a second joint gap 45) is formed between the third non-combustible plate 44 and the fourth non-combustible plate 46. The position of the second joint gap 45 is offset from the position of the first joint gap 41 in the up-down direction D1 (transverse direction Dx).

[0043] 4, in the vertical direction D1, the position of the first joint gap 41 is defined as 0% of the length from the first joint gap 41 to the third joint gap 51 (i.e., the height H of the second non-combustible board 42), and the distance increases toward the third joint gap 51, with the position of the third joint gap 51 being defined as 100% of the height H of the second non-combustible board 42. The position of the second joint gap 45 is within a range of 10% to 90% of the height H of the second non-combustible board 42.

[0044] In the second embodiment, as illustrated in FIG. 4, the non-combustible layer 4B is provided between the first non-combustible board 40 and the second non-combustible board 42 and further includes a fire-resistant joiner 48 made of a fire-resistant material.

[0045] The fire-resistant joiner 48 includes an insertion portion 49 extending along the thickness direction D2 and inserted into the first joint gap 41, and a hat portion 50 connected to the other end of the insertion portion 49 in the thickness direction D2 and configured to have a larger periphery than the insertion portion 49. Such a fire-resistant joiner 48 has a T-shape when viewed from the left-right direction D3.

[0046] In the second embodiment, as illustrated in Figure 4, the non-combustible layer 4B further includes a filling portion 54 formed by filling a gap 53 defined by the second wood layer 6, the first non-combustible board 40, the second non-combustible board 42, the third non-combustible board 44, and the fourth non-combustible board 46 with a grout material such as adhesive or mortar for adhering to the second wood layer 6.

[0047] The following describes the functions and effects of the wall panel 1B according to the second embodiment. The non-combustible layer 4B is configured so that the position of the first joint gap 41 is offset from the position of the second joint gap 45 in the vertical direction D1. Therefore, when a fire breaks out in the inner space 201 of the building 200, even if the flame passes through the first joint gap 41, it can be made to impinge on the third non-combustible plate 44. Similarly, when a fire breaks out in the outer space 203 of the building 200, even if the flame passes through the second joint gap 45, it can be made to impinge on the second non-combustible plate 42. Therefore, it is possible to provide a wall panel 1B that includes at least two layers and has improved flame-proofing properties.

[0048] In the second embodiment, the wall panel 1B is composed of three layers, namely, the wood layer 2, the non-combustible layer 4B, and the second wood layer 6, in that order from one side (the outer space 203) in the thickness direction D2, but the present disclosure is not limited to this. The wall panel 1 may be composed of at least two layers including the wood layer 2 and the non-combustible layer 4.

[0049] According to the second embodiment, the non-combustible layer 4B includes the fire-resistant joiner 48, which prevents flames from passing through the first joint gap 41 when a fire breaks out in the inner space 201 of the building 200. This further improves the flame-proofing properties of the wall panel 1B.

[0050] In the second embodiment, the first joint gap 41 and the second joint gap 45 are offset from each other in the vertical direction D1, but the present disclosure is not limited to this. Fig. 5 is a diagram schematically illustrating the configuration of the noncombustible layer 4B according to some embodiments, as viewed from the thickness direction D2.

[0051] In the embodiment illustrated in FIG. 5, the first non-combustible plate 40 and the second non-combustible plate 42 are arranged side by side in the left-right direction D3. The first non-combustible plate 40 and the second non-combustible plate 42 overlap each other in the up-down direction D1, and a first joint gap 41 is formed between the first non-combustible plate 40 and the second non-combustible plate 42. The third non-combustible plate 44 is located lower than the first non-combustible plate 40. The third non-combustible plate 44 and the fourth non-combustible plate 46 are arranged side by side in the left-right direction D3. The third non-combustible plate 44 and the fourth non-combustible plate 46 overlap each other in the up-down direction D1, and a second joint gap 45 is formed between the third non-combustible plate 44 and the fourth non-combustible plate 46. The position of the first joint gap 41 is offset from the position of the second joint gap 45 in the left-right direction D3. In the embodiment illustrated in FIG. 5, the left-right direction D3 is the intersecting direction Dx.

[0052] 5, the non-combustible layer 4B further includes a fifth non-combustible plate 52 arranged on the opposite side of the first non-combustible plate 40 in the left-right direction D3, with the second non-combustible plate 42 sandwiched between them. The fifth non-combustible plate 52 and the second non-combustible plate 42 overlap each other in the up-down direction D1, and a third joint gap 51 is formed between the fifth non-combustible plate 52 and the second non-combustible plate 42.

[0053] 5, in the left-right direction D3, the position of the first joint gap 41 is defined as 0% of the length from the first joint gap 41 to the third joint gap 51 (i.e., the width Wd of the second non-combustible board 42), and the distance increases toward the third joint gap 51, with the position of the third joint gap 51 being defined as 100% of the width Wd of the second non-combustible board 42. The position of the second joint gap 45 is within the range of 10% to 90% of the width Wd of the second non-combustible board 42.

[0054] In the second embodiment, the first non-combustible plate 40 and the third non-combustible plate 44 are offset from each other in the vertical direction D1, but the present disclosure is not limited to this. Fig. 6 is a diagram schematically illustrating the configuration of the non-combustible layer 4B according to some embodiments, as viewed from the thickness direction D2.

[0055] In the embodiment illustrated in FIG. 6, the first non-combustible plate 40 and the second non-combustible plate 42 are arranged side by side in the left-right direction D3. The first non-combustible plate 40 and the second non-combustible plate 42 overlap each other in the up-down direction D1, and a first joint gap 41 is formed between the first non-combustible plate 40 and the second non-combustible plate 42. The third non-combustible plate 44 and the fourth non-combustible plate 46 are arranged side by side in the left-right direction D3. The third non-combustible plate 44 and the fourth non-combustible plate 46 overlap each other in the up-down direction D1, and a second joint gap 45 is formed between the third non-combustible plate 44 and the fourth non-combustible plate 46. The position of the first joint gap 41 is offset from the position of the second joint gap 45 in the left-right direction D3. In the embodiment illustrated in FIG. 6, the left-right direction D3 is the intersecting direction Dx.

[0056] The first non-combustible plate 40, the second non-combustible plate 42, the third non-combustible plate 44, and the fourth non-combustible plate 46 overlap each other in the up-down direction D1. When viewed from the thickness direction D2, the first non-combustible plate 40, the second non-combustible plate 42, the third non-combustible plate 44, and the fourth non-combustible plate 46 each have a rectangular shape with the vertical direction D1 as the longitudinal direction. Therefore, the first joint gap 41 and the second joint gap 45 overlap each other in the up-down direction D1, but are offset from each other in the left-right direction D3. A fire-resistant joiner 48 made of a fire-resistant material is provided between the third non-combustible plate 44 and the fourth non-combustible plate 46. Note that the fire-resistant joiner 48 may also be provided between the first non-combustible plate 40 and the second non-combustible plate 42.

[0057] 6, the non-combustible layer 4B further includes a fifth non-combustible plate 52 arranged on the opposite side of the first non-combustible plate 40 in the left-right direction D3, with the second non-combustible plate 42 sandwiched between them. The fifth non-combustible plate 52 and the second non-combustible plate 42 overlap each other in the up-down direction D1, and a third joint gap 51 is formed between the fifth non-combustible plate 52 and the second non-combustible plate 42. The third joint gap 51 overlaps with the first joint gap 41 and the second joint gap 45 in the up-down direction D1, but is shifted from each other in the left-right direction D3.

[0058] The contents described in each of the above embodiments can be understood, for example, as follows.

[0059] [1] The wall panel (1A) according to the present disclosure is a wall panel for constituting a non-load-bearing wall (100A) of a building (200), a wood layer (2) including wood (W) and arranged on one side of the wall panel in the thickness direction (D2); a non-combustible layer (4) disposed on the other side of the wall panel in the thickness direction; The non-flammable layer is a plate-shaped first non-combustible plate (8) made of a non-combustible material (M); a second non-combustible plate (10) that is a plate-like second non-combustible plate made of a non-combustible material and that is arranged so as to overlap the first non-combustible plate in the thickness direction of the wall panel and to be arranged alongside the first non-combustible plate along a cross direction (Dx) that crosses the thickness direction of the wall panel; and a fire-resistant joiner (12) provided between the first non-combustible board and the second non-combustible board and made of a fire-resistant material.

[0060] According to the configuration described in [1] above, the wall panel comprises a wood layer and a non-combustible layer. The non-combustible layer comprises a first non-combustible board, a second non-combustible board, and a fire-resistant joiner provided between the first and second non-combustible boards. This prevents flames from passing between the first and second non-combustible boards in the event of a fire in the building. This makes it possible to provide a wall panel that includes at least two layers and has improved flame-proofing properties.

[0061] [2] The wall panel (1B) according to the present disclosure is a wall panel for constituting a non-load-bearing wall (100A) of a building (200), a wood layer (2) including wood (W) and arranged on one side of the wall panel in the thickness direction (D2); a non-combustible layer (4) disposed on the other side of the wall panel in the thickness direction; The non-flammable layer is a plate-shaped first non-combustible plate (40) made of a non-combustible material (M); a second non-combustible plate (42) that is a plate-like second non-combustible plate made of a non-combustible material and that is arranged so as to overlap the first non-combustible plate in the thickness direction of the wall panel and to be parallel to the first non-combustible plate along a cross direction (Dx) that crosses the thickness direction of the wall panel; a plate-shaped third non-combustible board (44) made of a non-combustible material and whose position in the thickness direction of the wall panel is offset from that of the first non-combustible board; a fourth non-combustible plate (46) that is a plate-like fourth non-combustible plate made of a non-combustible material and that overlaps with the third non-combustible plate in the thickness direction of the wall panel and is arranged alongside the third non-combustible plate along the cross direction, In the cross direction, the position of the gap (41) between the first non-combustible plate and the second non-combustible plate is shifted from the position of the gap (45) between the third non-combustible plate and the fourth non-combustible plate.

[0062] According to the configuration described in [2] above, the wall panel includes a wood layer and a non-combustible layer. The non-combustible layer is configured such that the position of the gap between the first and second non-combustible boards is offset from the position of the gap between the third and fourth non-combustible boards in the cross direction. Therefore, even if a fire breaks out in the building and the flame passes between the first and second non-combustible boards, it can be made to impinge on the third or fourth non-combustible board. Similarly, even if a fire breaks out in the building and the flame passes between the third and fourth non-combustible boards, it can be made to impinge on the first or second non-combustible board. Therefore, a wall panel can be provided that includes at least two layers and has improved flame-proofing properties.

[0063] [3] In some embodiments, in the configuration described in [2] above, The first non-combustible board is located closer to the inner space (201) of the building than the third non-combustible board, The non-combustible layer further includes a fire-resistant joiner (48) that is provided between the first non-combustible plate and the second non-combustible plate and is made of a fire-resistant material.

[0064] According to the configuration described in [3] above, in the event of a fire in the building, the flame is prevented from passing between the first and second non-combustible boards, thereby further improving the flame-blocking properties of the wall panel.

[0065] [4] In some embodiments, in the configuration described in any one of [1] to [3] above, The wall panel further includes a second wood layer (6) that is disposed on the opposite side of the wood layer across the non-combustible layer in the thickness direction of the wall panel, and that contains wood. The wood layer is arranged facing the exterior space (203) of the building, The second wood layer is arranged facing the interior space of the building.

[0066] According to the configuration described in [4] above, it is possible to improve the flame resistance of a wall panel having a three-layer or more structure in which a non-combustible layer is sandwiched between a wood layer and a second wood layer. Furthermore, since the wood layer is arranged facing the exterior space of the building and the second wood layer is arranged facing the interior space of the building, it is possible to improve the design of the wall panel.

[0067] [5] In some embodiments, in the configuration described in [4] above, At least one of the wood layer and the second wood layer has a flame-retardant portion (18) impregnated with a flame retardant (X) at least inside.

[0068] According to the configuration described in [5] above, since a flame-retardant portion is formed in at least one of the wood layer and the second wood layer, the fire resistance of the wall panel can be improved.

[0069] [6] In some embodiments, in the configuration described in any one of [1] to [3] above, The wood layer is disposed facing the exterior space of the building, and a flame-retardant portion impregnated with a flame retardant is formed at least inside the wood layer, The non-combustible layer is disposed facing the interior space of the building.

[0070] According to the configuration described in [6] above, it is possible to improve the fire resistance of a wall panel having a wood layer facing the exterior space of the building and a non-combustible layer facing the interior space of the building.

[0071] [7] In some embodiments, in the configuration described in [1] above, The fire-retardant layer is a wood wool cement board or a wood chip cement board.

[0072] According to the configuration described in [7] above, the manufacturing cost can be reduced compared to when both the first non-combustible board and the second non-combustible board are, for example, calcium silicate boards.

[0073] [8] In some embodiments, in the configuration described in [2] or [3] above, At least one of the first non-combustible board, the second non-combustible board, the third non-combustible board, and the fourth non-combustible board is a wood wool cement board or a wood chip cement board.

[0074] According to the configuration described in [8] above, the manufacturing costs can be reduced compared to when each of the first non-combustible board, the second non-combustible board, the third non-combustible board, and the fourth non-combustible board is, for example, a calcium silicate board. [Explanation of symbols]

[0075] 1 wall panel 1A Wall panel (first embodiment) 1B Wall panel (second embodiment) 2 woody layers 4A Non-flammable layer (first embodiment) 4B Non-flammable layer (second embodiment) 6 Second woody layer 8 First non-combustible board (first embodiment) 10 Second non-combustible board (first embodiment) 11 Joint gap 12 Fireproof Joiner (First Embodiment) 13 Gap 14 Insertion section (first embodiment) 16 Hat portion (first embodiment) 18 Flame Retardant Section 20 Filling section 40 First non-combustible board (second embodiment) 42 Second non-combustible board (second embodiment) 41 First joint gap 44 No. 3 fireproof board 45 Second joint gap 46 No. 4 fireproof board 48 Fire-resistant joiner (second embodiment) 49 Insertion section (second embodiment) 50 hat portion (second embodiment) 51 Third joint gap 52 No. 5 fireproof board 100 Exterior Wall 100A First exterior wall 100B Second outer wall 102 Roof 104 beds 106 Inner wall surface 108 Exterior wall 110 Inner wall 112 Beam 200 buildings 201 Inner Space 203 Outside space D1 Vertical direction D2 thickness direction D3 Left and right direction Dx cross direction G ground M Noncombustible material W wood X flame retardant

Claims

1. A wall panel for constituting a non-load-bearing wall of a building, a wood layer including wood and disposed on one side of the wall panel in a thickness direction; a non-combustible layer disposed on the other side of the wall panel in the thickness direction; The non-flammable layer is a first non-combustible plate formed of a non-combustible material; a second non-combustible plate that is a plate-like second non-combustible plate formed of a non-combustible material and that overlaps with the first non-combustible plate in the thickness direction of the wall panel and is arranged alongside the first non-combustible plate in a cross direction that crosses the thickness direction of the wall panel; a fire-resistant joiner provided between the first non-combustible board and the second non-combustible board and made of a fire-resistant material, Wall panel.

2. A wall panel for constituting a non-load-bearing wall of a building, a wood layer including wood and disposed on one side of the wall panel in a thickness direction; a non-combustible layer disposed on the other side of the wall panel in the thickness direction; The non-flammable layer is a first non-combustible plate formed of a non-combustible material; a second non-combustible plate that is a plate-like second non-combustible plate formed of a non-combustible material and that overlaps with the first non-combustible plate in the thickness direction of the wall panel and is arranged alongside the first non-combustible plate in a cross direction that crosses the thickness direction of the wall panel; a third non-combustible board, the position of which in the thickness direction of the wall panel is offset from that of the first non-combustible board and which is made of a non-combustible material; a fourth non-combustible plate that is a plate-like fourth non-combustible plate made of a non-combustible material and that overlaps with the third non-combustible plate in the thickness direction of the wall panel and is arranged alongside the third non-combustible plate along the cross direction, In the cross direction, the position of the gap between the first non-combustible plate and the second non-combustible plate is shifted from the position of the gap between the third non-combustible plate and the fourth non-combustible plate. Wall panel.

3. the first non-combustible board is located closer to the inner space of the building than the third non-combustible board, The non-combustible layer further includes a fire-resistant joiner provided between the first non-combustible board and the second non-combustible board and formed of a fire-resistant material.

3. The wall panel of claim 2.

4. The wall panel further includes a second wood layer, the second wood layer being disposed on the opposite side of the wood layer across the non-combustible layer in the thickness direction of the wall panel, and the second wood layer being made of wood. The wood layer is arranged facing the exterior space of the building, The second wood layer is arranged facing the interior space of the building. A wall panel according to any one of claims 1 to 3.

5. At least one of the wood layer and the second wood layer has a flame-retardant portion impregnated with a flame retardant at least inside.

5. The wall panel of claim 4.

6. The wood layer is disposed facing the exterior space of the building, and a flame-retardant portion impregnated with a flame retardant is formed at least inside the wood layer, The non-combustible layer is arranged facing the interior space of the building. A wall panel according to any one of claims 1 to 3.

7. At least one of the first non-combustible board and the second non-combustible board is a wood wool cement board or a wood chip cement board. The wall panel of claim 1 .

8. At least one of the first non-combustible board, the second non-combustible board, the third non-combustible board, and the fourth non-combustible board is a wood wool cement board or a wood chip cement board. A wall panel according to claim 2 or 3.

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