Metal Panel

Abstract

To provide a metal panel that does not require an adhesive to integrate a metal decorative board and a core material.SOLUTION: A metal panel 1 includes a metal decorative board 10 and a plate-shaped core material 20 attached to the back side of the metal decorative board 10. The metal decorative board 10 includes a body portion 11 that constitutes the surface of the metal decorative board 10 and on which the core material 20 is stacked on the back side, a lower support portion 13 protruding from the lower edge of the body portion 11 to the back side and supporting the core material 20 from below, and a pair of folded portions 14 that are folded back to form groove portions 15 that protrude from both side edges of the body portion 11 to the back side and open laterally inward, and support the core material 20 from the back side. The metal decorative board 10 further includes a pair of positioning members 30 that are attached to the respective grooves 15 and position the core material 20 from both sides in the lateral direction. A lower end portion 22 of the core material 20 forms an inclined bottom surface with an acute angle on the body portion 11 side and an obtuse angle on the opposite side to the body portion 11 in the thickness direction of the core material 20.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a metal panel having a metal veneer and a core material. [Background technology]

[0002] Metal panels are sometimes used as interior wall materials for buildings. Metal panels are composed of a metal decorative plate and a core material that supports the metal decorative plate from the back side. Generally, steel plates are used as the metal decorative plate, and gypsum board is used as the core material. Various coatings and processes can be applied to the metal decorative plate, which allows for highly decorative interior walls to be realized. Patent Document 1 discloses a technique related to silk screen printing as an example of coating of metal panels.

[0003] Conventionally, in metal panels for interior use, adhesives are used to bond the metal decorative panel to the core material. Conventionally, adhesives are also used to attach the metal panel to the wall substrate. For example, the core material of the metal panel is attached to gypsum board attached to the wall substrate of a lightweight steel frame using an adhesive. The adhesion of the core material to the wall substrate may be performed after or before bonding the core material to the metal decorative panel. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6850576 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional metal panels used as interior wall materials have various problems, such as the following, due to the use of adhesives to integrate the metal decorative sheet with the core material and to attach the metal panel to the wall base.

[0006] First, adhesive applied over a wide area of ​​the interior wall can pollute the indoor air and cause toxic gases in the event of a fire, which is detrimental to improving the indoor environment.

[0007] In addition, since it is difficult to separate the metal decorative panel and the core material that are integrated with an adhesive, it is not possible to replace only the metal decorative panel or only the core material, so if either the metal decorative panel or the core material deteriorates or becomes damaged, the entire metal panel must be discarded.

[0008] In addition, metal panels that are attached to the wall substrate using adhesive cannot be removed cleanly from the wall substrate. Therefore, when interior construction is performed, the metal panels cannot be reattached, and this requires skilled techniques. In addition, when the metal panels are replaced with other interior wall materials, the removed metal panels cannot be reused.

[0009] Therefore, the objective of the present invention is to provide an innovative metal panel that does not require adhesive to integrate the metal decorative panel and the core material, thereby not only improving the indoor environment but also making it easy to separate and recycle the metal decorative panel and the core material. [Means for solving the problem]

[0010] One aspect of the present invention is A metal panel used as an interior wall material for a building, Metal decorative plate; A plate-shaped core material attached to the back surface of the metal decorative plate, The metal decorative plate includes a main body portion that constitutes the surface of the metal decorative plate and has the core material superposed on the back side thereof, a lower support portion that protrudes from a lower edge portion of the main body portion to the back side and supports the core material from below, and a pair of fold-back portions that protrude from both side edges of the main body portion to the back side and are folded back to form grooves that are open laterally inward and support the core material from the back side, A pair of positioning members are attached to the grooves to position the core material from both sides in the lateral direction, The lower end of the core material is characterized in that it forms an inclined bottom surface with an acute angle on the side of the main body portion and an obtuse angle on the side opposite the main body portion in the thickness direction of the core material. Effect of the Invention

[0011] According to the metal panel of the present invention, the core material is positioned on both lateral sides by a pair of positioning members, and is supported from the bottom and back by the lower support part and a pair of folded parts of the metal decorative plate, so that the core material can be integrated with the metal decorative plate without using adhesive. Therefore, the indoor environment can be improved by not using volatile organic compounds. Furthermore, the metal decorative plate and the core material can be easily removed by not using adhesive. Therefore, the metal decorative plate and the core material can be recycled during renovation and demolition work of the building, and the generation of industrial waste can be eliminated. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view of a metal panel according to an embodiment of the present invention, as viewed from the front surface side. [Diagram 2] FIG. 2 is a perspective view of the metal panel as viewed from the back side. [Diagram 3] FIG. [Figure 4] 3A to 3C are diagrams showing the manufacturing process of the metal panel. [Diagram 5] 3A to 3C are diagrams showing the manufacturing process of the metal panel. [Figure 6] 3A to 3C are diagrams showing the manufacturing process of the metal panel. [Figure 7] FIG. 4 is a rear view of the metal panel as viewed from the back side. [Figure 8] 8 is a cross-sectional view taken along line AA in FIG. 7, showing the inside of the metal panel from above. [Figure 9] 8 is a cross-sectional view of the inside of the metal panel taken along line BB in FIG. 7, seen from the lateral direction. [Figure 10] FIG. 2 is a front view showing the wall base of the inner wall. [Figure 11]FIG. 2 is a front view showing the state in which the base steel plate is attached to the wall base. [Figure 12] FIG. 4 is a front view showing the state in which the front member is attached to the wall base. [Figure 13] 13 is a front view showing a process of engaging the metal panel with the front member. FIG. [Figure 14] 14 is a cross-sectional view taken along line CC in FIG. 13, illustrating the same step. [Figure 15] 14 is a cross-sectional view taken along line DD in FIG. 13, showing a state in which the metal panel is engaged with the front member. [Figure 16] 14 is a cross-sectional view taken along line EE in FIG. 13, showing a state in which a lower end of a metal panel is fixed to a wall substrate. FIG. [Figure 17] A front view showing the state in which the front member and baseboard are attached to the wall base. [Figure 18] 13 is a front view showing the process of engaging the metal panel with the front member and the baseboard. FIG. [Figure 19] 19 is a cross-sectional view taken along line FF in FIG. 18, showing a state in which the metal panel is engaged with the baseboard. [Figure 20] 20 is a cross-sectional view similar to FIG. 19, showing an engagement state between a baseboard and a metal panel in a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, a metal panel according to an embodiment of the present invention, a manufacturing method thereof, and an interior wall structure using the metal panel as an interior wall material and a construction method thereof will be described with reference to the accompanying drawings. Note that the following description is essentially merely illustrative and is not intended to limit the present invention, its application, or its uses.

[0014] In each drawing, the direction indicated by arrow X is the horizontal direction (width direction) of the metal panel when attached to the interior wall of a building, the direction indicated by arrow Y is the depth direction (thickness direction) of the metal panel in the same position, and the direction indicated by arrow Z is the up-down direction (height direction) of the metal panel in the same position.

[0015] [Metal panel components] Constituent members of a metal panel 1 according to this embodiment will be described with reference to Fig. 1 to Fig. 3. Fig. 1 and Fig. 2 show the metal panel 1 in an assembled state, and Fig. 3 shows constituent members 10, 20, and 30 of the metal panel 1 in an exploded state.

[0016] As shown in FIGS. 1 to 3, the metal panel 1 includes a metal decorative plate 10, a plate-shaped core material 20 attached to the rear surface of the metal decorative plate 10, and a pair of positioning members 30 that position the core material 20 in the lateral direction X.

[0017] The metal decorative plate 10 is composed of a metal plate with various coatings and / or various processing applied to the surface. The material of the metal decorative plate 10 may be various steel materials, aluminum alloys, brass, or other metals. The metal decorative plate 10 has a uniform thickness. The thickness of the metal decorative plate 10 is, for example, about 0.6 mm.

[0018] The metal decorative plate 10 is formed into a shallow box shape that is open to the back side by molding the peripheral portion of a roughly rectangular metal plate so as to bend it toward the back side. The metal decorative plate 10 includes a main body portion 11 that forms the surface thereof, a hook portion 12 that protrudes from the upper edge of the main body portion 11 to the back side, a lower support portion 13 that protrudes from the lower edge of the main body portion 11 to the back side, and a pair of folded portions 14 that protrude from both side edges of the main body portion 11 to the back side.

[0019] The main body 11 is a rectangular flat plate-like part. A core material 20 is layered on the back side of the main body 11.

[0020] The hook portion 12 is a portion for hanging on a front member 71 of the wall base 50 described later (see Figs. 13 to 15). The hook portion 12 is shorter in the horizontal direction X than the main body portion 11, and is not provided on both ends of the main body portion 11 in the horizontal direction X. The hook portion 12 includes an upper surface portion 12a extending from an upper edge portion of the main body portion 11 to the rear side in the depth direction Y, and an upper tongue-shaped portion 12b extending downward from the tip end portion of the upper surface portion 12a. An angle R1 (see Fig. 9) between the upper surface portion 12a and the upper tongue-shaped portion 12b as viewed from the horizontal direction X is preferably slightly larger than a right angle, and is set to, for example, 92 degrees. The upper tongue-shaped portion 12b is disposed at the upper end portion of the rear surface of the metal panel 1. The length of the upper tongue-shaped portion 12b in the vertical direction Z is shorter than the width of the upper surface portion 12a in the depth direction Y. The upper tongue-like portion 12b may be provided continuously across the entire width of the hook portion 12 in the lateral direction X, or may be provided discontinuously with a notch therebetween.

[0021] The lower support portion 13 is a portion that supports the core material 20 from below. The lower support portion 13 is provided across the entire width of the main body portion 11 in the horizontal direction X. The lower support portion 13 includes a support surface portion 13a that extends from the lower edge of the main body portion 11 to the rear side in the depth direction Y, and a lower tongue-shaped portion 13b that extends downward from the tip of the support surface portion 13a. The lower tongue-shaped portion 13b is a mounting portion that is mounted to the wall base 50 as described later (see Figures 16 and 19). The angle R2 (see Figure 9) between the support surface portion 13a and the lower tongue-shaped portion 13b as viewed from the horizontal direction X is a right angle, but may be slightly larger than a right angle. The lower tongue-shaped portion 13b is disposed at the lower end of the rear surface of the metal panel 1. The length of the lower tongue-shaped portion 13b in the vertical direction Z is shorter than the width of the support surface portion 13a in the depth direction Y. The lower tongue-like portion 13b may be provided continuously across the entire width of the lower support portion 13 in the lateral direction X, or may be provided discontinuously with a notch interposed therebetween.

[0022] The folded portion 14 is a portion that supports the side edge portion of the core material 20 and the positioning member 30 from the back side. The folded portion 14 is provided continuously in the up-down direction Z from just above the lower support portion 13 to the upper edge portion of the main body portion 11. The folded portion 14 includes a side portion 14a that extends from the side edge portion of the main body portion 11 to the back side in the depth direction Y, a positioning member support portion 14b that extends inward in the lateral direction X from the tip portion of the side portion 14a, and a plurality of core material support portions 14c that protrude further inward in the lateral direction X from the positioning member support portion 14b.

[0023] The side surface portion 14a and the positioning member support portion 14b are provided continuously over the entire length of the folded portion 14 in the up-down direction Z. As a result, a groove portion 15 that opens inward in the lateral direction X is formed continuously in the up-down direction Z between the side surface portion 14a, the positioning member support portion 14b, and the side edge portion of the main body portion 11. Each of the part of the main body portion 11, the side surface portion 14a, and the positioning member support portion 14b that constitute this groove portion 15 is disposed so as to face the positioning member 30 attached to the groove portion 15 as described below and to extend in the longitudinal direction of the positioning member 30.

[0024] The lower end of groove 15 is closed by lower support portion 13. The upper end of groove 15 is open, forming insertion opening 16 for inserting positioning member 30. Here, since hook portion 12 is provided on the inside of insertion opening 16 in lateral direction X, insertion of positioning member 30 into insertion opening 16 is not hindered.

[0025] As shown in FIG. 7, the core support parts 14c are provided at four locations spaced apart vertically and horizontally around the center of the core 20 when viewed from the back side. The edges of the core support parts 14c that face each other vertically are inclined with respect to the horizontal direction in a direction facing the center of the core 20. In other words, when viewed from the back side, the lower edge of the core support part 14c located at the upper left extends from the lower left to the upper right, the lower edge of the core support part 14c located at the upper right extends from the lower right to the upper left, the upper edge of the core support part 14c located at the lower left extends from the upper left to the lower right, and the upper edge of the core support part 14c located at the lower right extends from the upper right to the lower left. The inclination angle with respect to the horizontal direction is preferably 45°. By inclining the edge of core material support portion 14c as described above, stress is more likely to occur in the center of core material 20 in a warping direction that is concave toward main body portion 11 of metal decorative plate 10, and it is possible to prevent a decrease in the flatness of the front side of metal panel 1 due to core material 20 warping convexly toward main body portion 11 of metal decorative plate 10. In the vertical direction Z, the length of each core material support portion 14c is shorter than the distance between adjacent core material support portions 14c.

[0026] The core material 20 is a rectangular plate-like member having a specified dimension. For example, gypsum board is used as the core material 20, but other materials may be used. Specific examples of materials other than gypsum board that can be used as the core material 20 include honeycomb cores such as ceramic honeycombs and calcium silicate boards. As shown in FIG. 9, the lower end 22 of the core material 20 forms an inclined bottom surface in the thickness direction of the core material 20, with an acute angle on the main body 11 side of the metal decorative plate 10 and an obtuse angle on the opposite side to the main body 11. This allows the core material 20 to lean against the wall base 50 shown in FIG. 10, preventing a decrease in flatness of the front side of the metal panel 1 caused by the core material 20 pressing the metal decorative plate 10 from the back side. The inclined bottom surface does not need to be flat, and for example, the inclination angle with respect to the horizontal direction may be smaller on the main body 11 side of the metal decorative plate 10 and larger on the opposite side.

[0027] The thickness of the core material 20 is greater than the thickness of the metal decorative plate 10. In the vertical direction Z, the height of the core material 20 is less than the height of the main body 11 of the metal decorative plate 10. The lower end 22 of the core material 20 is supported from below by the support surface 13a of the lower support portion 13 of the metal decorative plate 10. The upper edge 21 of the core material 20 is disposed below the hook portion 12 of the metal decorative plate 10 so as to face the upper surface 12a of the hook portion 12. It is preferable that the core material 3 is warped in a direction that is concave toward the main body 11 of the metal decorative plate 10. This makes it possible to prevent the core material 20 from warping in a direction that is convex toward the main body 11 of the metal decorative plate 10, and to prevent a decrease in the flatness of the front side of the metal panel 1 caused by pressing the metal decorative plate 10 from the back side.

[0028] In the horizontal direction X, the width of the core material 20 is smaller than the width of the main body portion 11 of the metal decorative plate 10. Each side edge portion 23, 24 of the core material 20 is disposed adjacent to the groove portion 15 of the metal decorative plate 10 on the inside in the horizontal direction X. In the horizontal direction X, the distance from the core material support portion 14c of one folded portion 14 of the metal decorative plate 10 to the core material support portion 14c of the other folded portion 14 is smaller than the width of the core material 20. This allows the core material support portion 14c to be disposed opposite the side edge portions 23, 24 of the core material 20 from the back side in the depth direction Y. In other words, the core material 20 is engageable with the core material support portion 14c so as to be supported from the back side by the core material support portion 14c.

[0029] 3, the positioning member 30 is made of, for example, a bar-shaped steel material. In this embodiment, a channel steel is used as the positioning member 30. However, the cross-sectional shape of the positioning member 30 is not limited, and for example, a square pipe may be used as the positioning member 30.

[0030] The positioning member 30 is attached to the groove portion 15 of the metal decorative plate 10 in a position extending in the up-down direction Z. In other words, the positioning member 30 is attached to the metal decorative plate 10 in a state in which it is disposed so as to extend in the length direction of the groove portion 15. In the up-down direction Z, the positioning member 30 has approximately the same length as the groove portion 15. Furthermore, the positioning member 30 has approximately the same dimensions as the groove portion 15 in the lateral direction X and depth direction Y.

[0031] The positioning member 30 includes a base portion 31 disposed along a plane perpendicular to the horizontal direction X, and a pair of extension portions 32, 33 extending in the horizontal direction X from both ends of the base portion 31 in the depth direction Y. The base portion 31 is disposed along the side edges 23, 24 of the core material 20. The base portion 31 is also disposed opposite the side portion 14a of the metal decorative plate 10 with a gap therebetween in the horizontal direction X. One extension portion 32 is disposed along the main body portion 11 of the metal decorative plate 10, and the other extension portion 33 is disposed along the positioning member support portion 14b of the metal decorative plate 10. The tip portions of the pair of extension portions 32, 33 are disposed along the side portion 14a of the metal decorative plate 10.

[0032] [Metal panel manufacturing method] A method for manufacturing the metal panel 1 according to this embodiment will be described mainly with reference to FIGS.

[0033] First, as a preparation step, the above-mentioned metal decorative panel 10, core material 20, and pair of positioning members 30 (see FIG. 3) are prepared. The metal decorative panel 10 is prepared by, for example, sheet metal processing to form the hook portion 12, lower support portion 13, and pair of folded portions 14. The core material 20 and positioning members 30 are each prepared to have specified dimensions.

[0034] Next, the metal decorative board 10 is placed face down on the workbench 100, and the core material placing step shown in FIG. 4, the positioning step shown in FIG. 5, and the positioning step shown in FIG. 6 are carried out in this order.

[0035] 4, the core material 20 is placed so that the concave side of the core material 20 faces the metal decorative plate 10, and one side edge 23 of the core material 20 is inserted into one folded portion 14 (the left side in the figure) of the metal decorative plate 10 while overlapping the core material 20 on the back surface of the main body portion 11 of the metal decorative plate 10. At this time, the side edge 23 of the core material 20 is inserted into the groove portion 15 of the metal decorative plate 10. Also, at this time, the lower end portion 22 of the core material 20 is positioned so as to face the support surface portion 13a of the lower support portion 13 of the metal decorative plate 10.

[0036] Next, in the alignment step shown in Figure 5, while maintaining the engagement between one side edge 23 of the core material 20 and one (left side of the figure) folded portion 14 of the metal decorative panel 10, the core material 20 is slid in the horizontal direction X toward the other (right side of the figure) folded portion 14 to engage the other side edge 24 of the core material 20 with the other (right side of the figure) folded portion 14.

[0037] As a result, the metal decorative plate 10 and the core material 20 are aligned in the lateral direction X so that the core material 20 engages with the folded-back portions 14 on both sides. At this time, each side edge portion 23, 24 of the core material 20 is engaged with a plurality of core material supports 14c and is out of the groove portion 15 of the metal decorative plate 10. In other words, a gap is created in the groove portion 15 located on the side of the core material 20.

[0038] 6, the positioning members 30 are inserted into the gaps formed in the grooves 15 on both sides of the metal decorative plate 10. Specifically, each positioning member 30 is inserted into the grooves 15 from the insertion openings 16 in a predetermined orientation. The two positioning members 30 are inserted into the grooves 15 until they contact the support surface portions 13a, completing the attachment of the positioning members 30. The pair of positioning members 30 attached to the grooves 15 in this manner restricts the movement of the core material 20 in the lateral direction X.

[0039] This completes the metal panel 1. In this embodiment, by performing the switchback type (Kendon type) assembly as described above, the metal panel 1 can be manufactured by simple operations without using adhesive.

[0040] [Assembled metal panel] The metal panel 1 in the assembled state will be described with reference to FIGS.

[0041] As shown in FIGS. 7 and 9, in the assembled metal panel 1, the core material 20 and the pair of positioning members 30 are supported from below by the lower support portion 13 of the metal decorative board 10.

[0042] 7 and 8, the core material 20 is positioned from both sides in the lateral direction X by a pair of positioning members 30, and is also positioned from both sides in the depth direction Y by the main body 11 of the metal decorative plate 10 and a plurality of core material supports 14c. This allows the core material 20 to be integrated with the metal decorative plate 10 so as not to fall off from the metal decorative plate 10.

[0043] Each positioning member 30 is positioned from both sides in the lateral direction X by side portion 14a of metal decorative plate 10 and side edge portions 23, 24 of core material 20, and is also positioned from both sides in the depth direction Y by main body portion 11 of metal decorative plate 10 and positioning member support portion 14b. As a result, each positioning member 30 is integrated with metal decorative plate 10 so as not to fall off metal decorative plate 10.

[0044] Furthermore, by attaching positioning members 30 made of steel to both side edge portions of the metal panel 1, the rigidity of the metal panel 1 is increased.

[0045] In this way, according to the metal panel 1 according to this embodiment, the core material 20 and the positioning members 30 can be firmly integrated with the metal decorative plate 10 without using any adhesive.

[0046] [Inner wall construction method and inner wall structure] Hereinafter, a specific example of an interior wall construction method and an interior wall structure will be described, in which the above-mentioned metal panel 1 is used as an interior wall material. Note that in the following explanation, an example using the above-mentioned metal panel 1 will be described, but the interior wall construction method and the interior wall structure according to the present invention can also be applied to metal panels other than the above-mentioned metal panel 1.

[0047] [First construction example] The first construction example will be described with reference to Figs.

[0048] As shown in Fig. 10, first, in the wall base construction step, a wall base 50 to which the metal panel 1 is attached is constructed. In this embodiment, a light-gauge steel-framed wall base 51 is formed on the floor surface 40 of the building. Specifically, the light-gauge steel-framed wall base 51 is formed by assembling upper and lower runners 52, 53 extending in the horizontal direction X and a plurality of studs 54 extending in the vertical direction Z. Furthermore, at a predetermined height, the studs 54 are connected by a horizontally extending vibration stopper 55.

[0049] Next, as shown in Figs. 11 and 12, a preparation step for mounting the metal panel 1 on the wall base 50 is performed.

[0050] In the process shown in Fig. 11, reinforcing steel base plates 61, 62 are fixed at a predetermined height on the surface of the light-gauge steel-frame wall base 51. In the example shown in Fig. 11, the steel base plates 61, 62 are attached at two locations in the vertical direction Z. The upper steel base plate 61 is provided at a height corresponding to the upper end of the metal panel 1, and the lower steel base plate 62 is provided at a height corresponding to the lower end of the metal panel 1. As the steel base plates 61, 62, for example, steel plates extending in a strip shape in the horizontal direction X are used. The steel base plates 61, 62 are fixed to a plurality of studs 54, for example, by screws.

[0051] 12, plaster boards 70 are attached to the front side of the wall base 50 (the front side of the light-gauge steel-frame wall base 51 and the base steel plates 61, 62). The number of plaster boards 70 attached to the wall base 50 may be one or more. Also, the attachment of the plaster boards 70 may be omitted.

[0052] In addition, a front member 71 extending in the horizontal direction X is attached to the surface of the wall base 50. Specifically, the front member 71 is fixed to the upper base steel plate 61 via a plaster board 70. When the plaster board 70 is omitted, the front member 71 is fixed directly to the base steel plate 61.

[0053] A bar-shaped steel material is used as the front member 71. Specifically, in the example shown in Fig. 14, a channel steel is used as the front member 71. However, a steel material of another shape may be used as the front member 71, for example, an angle steel may be used.

[0054] The front member 71 shown in Figure 14 comprises a base portion 72 arranged perpendicular to the depth direction Y so as to face the wall base 50, an upper extension portion 73 extending from the upper edge of the base portion 72 to the surface side in the depth direction Y, and a lower extension portion 74 extending from the lower edge of the base portion 72 to the surface side in the depth direction Y.

[0055] The base portion 72 is fixed to the base steel plate 61 by a screw 84. The screw 84 is driven, for example, below the center of the base portion 72 in the vertical direction Z. A spacer 82 is interposed between the base portion 72 and the gypsum board 70. For example, a washer is used as the spacer 82. The thickness of the spacer 82 is larger than the thickness of the upper tongue-shaped portion 12b, for example, about 0.8 mm. It is preferable that the difference between the thickness of the spacer 82 and the thickness of the upper tongue-shaped portion 12b is about 0.2 mm. The spacer 82 is positioned at a predetermined position by passing the screw 84 through. The spacer 82 is attached so as to be positioned below the center of the base portion 72 in the vertical direction Z. By fixing via the spacer 82 in this way, an upper insertion port 86 that is open at least upward is formed between the front member 71 and the gypsum board 70.

[0056] Next, a metal panel mounting step is performed in which the metal panel 1 is mounted on the wall base 50. Specifically, the metal panel mounting step includes an upper engagement step, a positioning step, and a lower fixing step, which are performed in this order.

[0057] 13 and 14, in the upper engagement step, the hook portion 12 provided on the upper end portion of the metal panel 1 is inserted from above into the upper insertion opening 86. Here, the hook portion 12 is formed so that the angle R1 between the upper surface portion 12a and the upper tongue-like portion 12b is larger than a right angle, which makes it easier to smoothly insert the upper tongue-like portion 12b into the upper insertion opening 86 from diagonally above.

[0058] As shown in Fig. 15, in the engaged state between the hook portion 12 and the upper insertion port 86, the tip of the upper tongue-like portion 12b is positioned above the spacer 82, thereby avoiding interference between the upper tongue-like portion 12b and the spacer 82. In the engaged state shown in Fig. 15, the metal panel 1 is supported by the wall base 50 so as to be slidable in the lateral direction X.

[0059] In the subsequent alignment step, the metal panel 1 is slid in the lateral direction X so that its position in the lateral direction X is adjusted, whereby the positions of the joints between adjacent metal panels 1 are aligned to predetermined positions.

[0060] Once the alignment of the metal panel 1 is complete, a lower fixing step is performed. As shown in Fig. 16, in the lower fixing step, the lower tongue-like portion 13b provided at the lower end of the metal panel 1 is fixed to the wall base 50 with a screw 88. Specifically, the lower tongue-like portion 13b is fixed to the lower base steel plate 62 via the gypsum board 70. This ensures that the metal panel 1 is securely fixed to the wall base 50.

[0061] When the metal panel mounting step is completed for one metal panel 1, the same metal panel mounting step is sequentially performed for the subsequent metal panels 1.

[0062] According to the interior wall construction as described above, the metal panel 1 can be attached to the wall base 50 by simple operations without using adhesive.

[0063] [Second construction example] The second construction example will be described with reference to FIGS.

[0064] In the wall base construction step in the second construction example, similarly to the above-mentioned first construction example, a light-gauge steel-framed wall base 51 is formed (see FIG. 10). Also, as a preparation step, similarly to the first construction example, an upper base steel plate 61 and a lower base steel plate 62 are attached to the surface of the light-gauge steel-framed wall base 51.

[0065] As shown in FIG. 17, in the preparation step in the second construction example, in addition to the front member 71 similar to that in the first construction example, a baseboard 90 as a decorative member extending in the horizontal direction is attached to the lower end of the wall base 50. As shown in FIG. 19, the baseboard 90 is attached to the surface of the gypsum board 70 so that a lower insertion port 94 that opens upward is formed between the baseboard 90 and the gypsum board 70. A spacer 92 is interposed between the baseboard 90 and the gypsum board 70. As the spacer 92, for example, a strip-shaped plate material extending in the horizontal direction X is used. The thickness of the spacer 92 is larger than the thickness of the lower tongue-shaped portion 13b of the metal panel 1, for example, about 0.8 mm. The difference between the thickness of the spacer 92 and the thickness of the lower tongue-shaped portion 13b is preferably about 0.2 mm. The spacer 92 is fixed to the lower base steel plate 62 by a screw 96. The spacer 92 has a width smaller than that of the baseboard 90 in the vertical direction Z. The upper end of the spacer 92 is disposed below the upper end of the baseboard 90. As a result, a lower insertion opening 94 that is open upward is formed between the upper end of the baseboard 90 and the gypsum board 70.

[0066] In the metal panel mounting step in the second construction example, the lower engaging step and the upper engaging step are performed, and then the alignment step is performed.

[0067] As shown in Figures 18 and 19, in the lower engagement step, the lower tongue-like portion 13b provided at the lower end portion of the metal panel 1 is inserted from above into the lower insertion opening 94 between the gypsum board 70 and the baseboard 90.

[0068] In parallel with the lower engaging step, an upper engaging step is performed. In the upper engaging step, similarly to the first construction example, the hook portion 12 provided on the upper end portion of the metal panel 1 is inserted from above into the upper insertion port 86 (see FIG. 14).

[0069] When the lower engaging step and the upper engaging step are completed, the metal panel 1 is supported by the wall base 50 so as to be slidable in the lateral direction X.

[0070] Thereafter, the positioning step is performed in the same manner as in the first installation example, and the position of the metal panel 1 in the lateral direction X is adjusted. This completes the installation of the metal panel 1.

[0071] According to the second construction example, the work of fixing the metal panel 1 is not required, and therefore the work of attaching the metal panel 1 to the wall base 50 can be further simplified.

[0072] According to the present embodiment described above, it is not necessary to use an adhesive either when integrating the core material 20 with the metal decorative plate 10 in the metal panel 1 or when attaching the metal panel 1 to the wall base 50.

[0073] This makes it possible to suppress indoor air pollution caused by adhesive components and the generation of toxic gases in the event of a fire, which is advantageous in improving the indoor environment.

[0074] Furthermore, in the metal panel 1 according to this embodiment, the core material 20 and the positioning member 30 can be easily removed from the metal decorative plate 10. Therefore, the metal decorative plate 10, the core material 20, or the positioning member 30 can be replaced or reused as necessary.

[0075] Furthermore, according to this embodiment, the metal panel 1 attached to the wall base 50 can be easily removed from the wall base 50. Therefore, the metal panel 1 can be reattached any number of times during interior construction. This allows high-quality interior construction to be achieved regardless of the skill level of the worker. Also, the metal panel 1 can be replaced or reused at any time as necessary.

[0076] Although the present invention has been described above with reference to the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment.

[0077] For example, in the above-mentioned second construction example, the baseboard 90 is attached to the wall base 50, and then the metal panel 1 is attached to the wall base 50. However, the baseboard 90 may be attached to the wall base 50 after the metal panel 1 is attached to the wall base 50. In this case, the above-mentioned upper engagement step and the positioning step are performed in this order, and then, as shown in FIG. 20, a lower engagement step is performed in which the lower tongue-shaped portion 13b is engaged between the upper end of the baseboard 90 and the wall base 50. In this case, in the lower engagement step, first, the lower tongue-shaped portion 13b is placed overlapping on the surface of the wall base 50. Next, the baseboard 90 is placed overlapping on the surfaces of the wall base 50 and the lower tongue-shaped portion 13b. As a result, the upper end of the baseboard 90 is placed overlapping on the surface of the lower tongue-shaped portion 13b. The baseboard 90 placed overlapping on the surface of the wall base 50 via the lower tongue-shaped portion 13b in this way is attached to the wall base 50 below the lower tongue-shaped portion 13b. As a result, a lower insertion opening 98 that opens upward is formed between the upper end of the baseboard 90 and the wall base 50, and the lower tongue-like portion 13b is inserted into this lower insertion opening 98. This completes the attachment of the metal panel 1 to the wall base 50. With this type of construction, the same effects as those of the second construction example described above can be obtained.

[0078] In the above-mentioned second construction example, an example was described in which a baseboard 90 was provided as a decorative member, but if a waist wall trim is provided as a decorative member, a lower insertion port may be formed between the trim and the wall base. In this case, interior construction similar to that of the second construction example is possible. [Explanation of symbols]

[0079] 1 Metal panel (interior wall material) 10 Metal laminate 11 Main body 12 Hook part 12b Upper tongue 13 Lower support part 13b Lower tongue portion (mounting portion) 14 Folding part 14b Positioning member support part 14c Core support 15 Groove 16 Insertion port 20 Core material 21 Upper edge of core 22 Lower end of core 23 One side edge of the core material 24 Other side edge of core material 30 Positioning member 50 Wall Base 51 Lightweight steel wall base (steel base) 61,62 Base steel plate 71 Front member 82 Spacer 86 Upper socket 90 Baseboard (decorative material) 92 Spacer 94 Lower socket 98 Lower socket

Claims

1. A metal panel used as an interior wall material for a building, Metal decorative plate; A plate-shaped core material attached to the back surface of the metal decorative plate, The metal decorative plate includes a main body portion that constitutes the surface of the metal decorative plate and has the core material superposed on the back side thereof, a lower support portion that protrudes from a lower edge portion of the main body portion to the back side and supports the core material from below, and a pair of fold-back portions that protrude from both side edges of the main body portion to the back side and are folded back to form grooves that are open laterally inward and support the core material from the back side, A pair of positioning members are attached to the grooves to position the core material from both sides in the lateral direction, A metal panel characterized in that the lower end of the core material forms an inclined bottom surface in the thickness direction of the core material, with an acute angle on the main body side and an obtuse angle on the side opposite the main body.

2. the folded-back portion includes a positioning member support portion disposed opposite the positioning member and extending in the longitudinal direction of the positioning member, and a plurality of core support portions protruding laterally inward from a plurality of points of the positioning member support portion and disposed opposite the back side of the core, The metal panel described in claim 1, wherein the multiple core material support portions are provided at four locations spaced apart vertically and horizontally around the center of the core material when viewed from the back side, and the edges of the sides that are opposed to each other vertically are inclined relative to the horizontal direction in a direction facing the center of the core material.

3. The metal panel according to claim 1 or 2, wherein the core material is warped in a concave direction toward the main body portion.

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