JP7628095B2 - Metal Panel - Google Patents

Description

The present invention relates to a metal panel having a metal veneer and a core material.

Metal panels are sometimes used as interior wall materials for buildings. Metal panels are composed of a metal veneer and a core material that supports the metal veneer from the back side. Generally, steel plate is used as the metal veneer, and gypsum board is used as the core material. Metal veneer can be painted with various coatings and processed in various ways, which allows for the creation of interior walls with a highly decorative design. Patent Document 1 discloses a technique related to silk screen printing as an example of painting metal panels.

Conventionally, in metal panels for interior use, adhesives have been used to bond the metal veneer to the core material. Adhesives have also been used to attach metal panels to wall substrates. For example, adhesives are used to attach the core material of a metal panel to gypsum boards that are attached to a lightweight steel frame wall substrate. The core material is bonded to the wall substrate either after or before bonding the core material to the metal veneer.

Patent No. 6850576

However, conventional metal panels used as interior wall materials have various problems due to the use of adhesives to integrate the metal decorative panel with the core material and to attach the metal panel to the wall base, including the following:

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

In addition, because it is difficult to separate the metal decorative panel and the core material that are integrated with adhesive, it is not possible to replace just the metal decorative panel or just the core material. Therefore, if either the metal decorative panel or the core material deteriorates or becomes damaged, the entire metal panel must be discarded.

In addition, metal panels that are attached to a wall substrate using adhesive cannot be removed cleanly from the substrate. This means that metal panels cannot be reattached during interior construction, requiring skilled techniques. There is also the problem that when metal panels are replaced with other interior wall materials, the removed metal panels cannot be reused.

The present invention aims to provide an innovative metal panel that does not require adhesive to integrate the metal veneer and the core material, thereby improving the indoor environment and allowing the metal veneer and the core material to be easily separated and recycled.

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 main body side and an obtuse angle on the side opposite the main body in the thickness direction of the core material.

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 portion and a pair of folded portions of the metal decorative panel, so that the core material can be integrated with the metal decorative panel without using adhesives. This makes it possible to improve the indoor environment by not using volatile organic compounds. Furthermore, the absence of adhesives makes it possible to easily remove the metal decorative panel and the core material. Therefore, during renovation and demolition work on a building, the metal decorative panel and the core material can each be recycled, eliminating the generation of industrial waste.

1 is a perspective view of a metal panel according to an embodiment of the present invention, as viewed from the front surface side. FIG. 2 is a perspective view of the metal panel as viewed from the back side. FIG. 3A to 3C are diagrams showing the manufacturing process of the metal panel. 3A to 3C are diagrams showing the manufacturing process of the metal panel. 3A to 3C are diagrams showing the manufacturing process of the metal panel. FIG. 4 is a rear view of the metal panel as viewed from the back side. 8 is a cross-sectional view of the inside of the metal panel taken along line AA in FIG. 7, seen from above. 8 is a cross-sectional view of the inside of the metal panel taken along line BB in FIG. 7 as viewed from the lateral direction. FIG. 2 is a front view showing the wall base of the inner wall. FIG. 2 is a front view showing the state in which the base steel plate is attached to the wall base. FIG. 4 is a front view showing the state in which the front member is attached to the wall base. 13 is a front view showing a process of engaging the metal panel with the front member. FIG. 14 is a cross-sectional view taken along line CC of FIG. 13 showing the same step. 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. 14 is a cross-sectional view taken along line E-E of FIG. 13, showing a state in which the lower end of the metal panel is fixed to the wall base. A front view showing the state in which the front member and baseboard are attached to the wall base. 13 is a front view showing the process of engaging the metal panel with the front member and the baseboard. FIG. 19 is a cross-sectional view taken along line FF in FIG. 18, showing the state in which the metal panel is engaged with the baseboard. 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.

Below, we will explain a metal panel according to one 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, with reference to the attached drawings. Note that the following explanation is essentially merely an example, and is not intended to limit the present invention, its applications, or its uses.

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

[Constituent materials of metal panel]
The components of a metal panel 1 according to this embodiment will be described with reference to Figures 1 to 3. Figures 1 and 2 show the metal panel 1 in an assembled state, and Figure 3 shows the components 10, 20, and 30 of the metal panel 1 in an exploded state.

As shown in Figures 1 to 3, the metal panel 1 comprises 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.

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.

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 that it is bent toward the back side. The metal decorative plate 10 has a main body portion 11 that forms its surface, 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 fold portions 14 that protrude from both side edges of the main body portion 11 to the back side.

The main body 11 is a rectangular, flat plate. The back side of the main body 11 is layered with the core material 20.

The hook portion 12 is a portion for hanging on the front member 71 of the wall base 50 described later (see Figures 13 to 15). The hook portion 12 is shorter in the horizontal direction X than the main body portion 11, and is not provided at both ends of the main body portion 11 in the horizontal direction X. The hook portion 12 has an upper surface portion 12a extending from the upper edge of the main body portion 11 to the back side in the depth direction Y, and an upper tongue-shaped portion 12b extending downward from the tip of the upper surface portion 12a. The angle R1 (see Figure 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, for example, 92 degrees. The upper tongue-shaped portion 12b is disposed at the upper end of the back 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 portion 12b may be provided continuously across the entire width of the hook portion 12 in the lateral direction X, or may be provided intermittently with a cutout therebetween.

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 extending from the lower edge of the main body portion 11 to the back side in the depth direction Y, and a lower tongue-shaped portion 13b extending downward from the tip of the support surface portion 13a. The lower tongue-shaped portion 13b is a mounting portion that is attached 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 back 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 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 intermittently with a notch between them.

The folded portion 14 is a portion that supports the side edge of the core material 20 and the positioning member 30 from the back side. The folded portion 14 is provided continuously in the vertical direction Z from directly above the lower support portion 13 to the upper edge of the main body portion 11. The folded portion 14 has a side portion 14a that extends from the side edge 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 horizontal direction X from the tip of the side portion 14a, and a plurality of core material support portions 14c that protrude further inward in the horizontal direction X from the positioning member support portion 14b.

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 vertical direction Z. As a result, a groove portion 15 that opens inward in the lateral direction X is formed continuously in the vertical 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 constitutes this groove portion 15 is positioned 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.

The lower end of the groove 15 is closed by the lower support portion 13. The upper end of the groove 15 is open, forming an insertion opening 16 for inserting the positioning member 30. Here, the above-mentioned hook portion 12 is provided on the inside of the insertion opening 16 in the lateral direction X, so that the positioning member 30 can be inserted into the insertion opening 16 without any problems.

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

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. As a result, the core material 20 is in a state of leaning against the wall base 50 shown in FIG. 10, so that it is possible to prevent a decrease in the 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.

The thickness of the core material 20 is greater than the thickness of the metal decorative panel 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 panel 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 panel 10. The upper edge 21 of the core material 20 is disposed below the hook portion 12 of the metal decorative panel 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 panel 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 panel 10, and to prevent a decrease in the flatness of the front side of the metal panel 1 caused by pressing the metal decorative panel 10 from the back side.

In the horizontal direction X, the width of the core material 20 is smaller than the width of the main body 11 of the metal decorative plate 10. Each side edge 23, 24 of the core material 20 is disposed adjacent to the groove 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. As a result, the core material support portion 14c can 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 can be engaged with the core material support portion 14c so as to be supported from the back side by the core material support portion 14c.

As shown in FIG. 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.

The positioning member 30 is attached to the groove portion 15 of the metal decorative plate 10 in a position extending in the vertical direction Z. In other words, the positioning member 30 is attached to the metal decorative plate 10 in a state in which it is arranged so that it extends in the length direction of the groove portion 15. In the vertical 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 horizontal direction X and depth direction Y.

The positioning member 30 includes a base portion 31 arranged 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 arranged along the side edges 23, 24 of the core material 20. The base portion 31 is also arranged opposite the side portion 14a of the metal decorative plate 10 with a gap in between in the horizontal direction X. One extension portion 32 is arranged along the main body portion 11 of the metal decorative plate 10, and the other extension portion 33 is arranged along the positioning member support portion 14b of the metal decorative plate 10. The tips of the pair of extension portions 32, 33 are arranged along the side portion 14a of the metal decorative plate 10.

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

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 fold-back portions 14. The core material 20 and positioning members 30 are each prepared to the specified dimensions.

Next, the metal decorative panel 10 is placed face down on the workbench 100, and the core material placement step shown in FIG. 4, the alignment step shown in FIG. 5, and the positioning step shown in FIG. 6 are carried out in this order.

In the core material placement step shown in FIG. 4, 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 of the folded portions 14 (the left side in the figure) of the metal decorative plate 10 while the core material 20 is placed so as to overlap 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. At this time, the lower end portion 22 of the core material 20 is also positioned so as to face the support surface portion 13a of the lower support portion 13 of the metal decorative plate 10.

Next, in the alignment step shown in FIG. 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 lateral direction X toward the other (right side of the figure) folded portion 14, so that the other side edge 24 of the core material 20 engages with the other (right side of the figure) folded portion 14.

As a result, the metal decorative plate 10 and the core material 20 are aligned in the horizontal 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 the multiple core material support portions 14c and is disengaged from 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.

Next, in the positioning step shown in FIG. 6, the positioning members 30 are inserted into the gaps created in the grooves 15 on both sides of the metal decorative plate 10. Specifically, each positioning member 30 is inserted into the groove 15 from the insertion opening 16 in a predetermined orientation. The installation of the positioning members 30 is completed by inserting the two positioning members 30 into the grooves 15 until they contact the support surface portion 13a. The pair of positioning members 30 installed in the grooves 15 in this manner restricts the movement of the core material 20 in the lateral direction X.

This completes the metal panel 1. In this embodiment, by assembling using the switchback method (Kendon method) as described above, the metal panel 1 can be manufactured through simple operations without using adhesive.

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

As shown in Figures 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 plate 10.

As shown in Figures 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 multiple core material support parts 14c. This allows the core material 20 to be integrated with the metal decorative plate 10 so that it does not fall off the metal decorative plate 10.

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

In addition, the rigidity of the metal panel 1 is increased by attaching positioning members 30 made of steel to the side edges on both sides of the metal panel 1.

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

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

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

As shown in FIG. 10, first, in the wall base construction step, the 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 multiple studs 54 extending in the vertical direction Z. In addition, at a predetermined height, the studs 54 are connected by a horizontally extending anti-sway bar 55.

Next, as shown in Figures 11 and 12, a preparation step is performed to attach the metal panel 1 to the wall base 50.

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. The steel base plates 61, 62 are, for example, steel plates extending in a strip shape in the horizontal direction X. The steel base plates 61, 62 are fixed to a number of studs 54, for example, by screws.

Next, as shown in FIG. 12, gypsum 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 gypsum boards 70 attached to the wall base 50 may be one or more. Also, the attachment of the gypsum boards 70 may be omitted.

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 the plaster board 70. If the plaster board 70 is omitted, the front member 71 is fixed directly to the base steel plate 61.

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, steel materials of other shapes may also be used as the front member 71, for example, an angle steel may also be used.

The front member 71 shown in FIG. 14 includes a base portion 72 that is arranged perpendicular to the depth direction Y so as to face the wall base 50, an upper extension portion 73 that extends from the upper edge of the base portion 72 to the surface side in the depth direction Y, and a lower extension portion 74 that extends from the lower edge of the base portion 72 to the surface side in the depth direction Y.

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 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 portion 12b is about 0.2 mm. The spacer 82 is positioned at a predetermined position by passing the screw 84 through it. The spacer 82 is attached so that it is 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.

Next, a metal panel installation step is performed in which the metal panel 1 is attached to the wall base 50. Specifically, the metal panel installation step includes an upper engagement step, a positioning step, and a lower fixing step, in that order.

As shown in Figures 13 and 14, in the upper engagement step, the hook portion 12 provided on the upper end 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.

As shown in FIG. 15, when the hook portion 12 and the upper insertion port 86 are engaged, the tip of the upper tongue portion 12b is positioned above the spacer 82, and interference between the upper tongue portion 12b and the spacer 82 is avoided. 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.

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. This aligns the joints between adjacent metal panels 1 to the specified positions.

Once the alignment of the metal panel 1 is complete, the lower fixing step is performed. As shown in FIG. 16, in the lower fixing step, the lower tongue 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 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.

When the metal panel installation step is completed for one metal panel 1, the same metal panel installation step is carried out sequentially for each subsequent metal panel 1.

By using the interior wall construction method described above, the metal panel 1 can be attached to the wall base 50 with simple steps without using adhesive.

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

In the wall base construction step of the second construction example, a light-gauge steel-framed wall base 51 is formed, as in the first construction example described above (see FIG. 10). Also, as a preparation step, 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, as in the first construction example.

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 positioned below the upper end of the baseboard 90. This forms a lower insertion opening 94 that is open upward between the upper end of the baseboard 90 and the gypsum board 70.

In the metal panel installation step in the second construction example, a lower engagement step and an upper engagement step are performed, followed by an alignment step.

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

In addition, in parallel with the lower engagement step, an upper engagement step is performed. In the upper engagement step, as in the first construction example, the hook portion 12 provided at the upper end of the metal panel 1 is inserted from above into the upper insertion port 86 (see FIG. 14).

When the lower engagement step and the upper engagement step are completed, the metal panel 1 is supported on the wall base 50 so that it can slide in the lateral direction X.

Then, the alignment step is performed in the same manner as in the first construction 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.

According to the second construction example, the work of fixing the metal panel 1 is not necessary, so the work of attaching the metal panel 1 to the wall base 50 can be further simplified.

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

This helps prevent indoor air pollution caused by adhesive components and the generation of toxic gases in the event of a fire, which is beneficial in improving the indoor environment.

In addition, 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.

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 needed.

Although the present invention has been described above using the above-mentioned embodiments, the present invention is not limited to the above-mentioned embodiments.

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 alignment step are performed in this order, and then 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 as shown in FIG. 20. In this case, in the lower engagement step, first, the lower tongue-shaped portion 13b is placed overlapping the surface of the wall base 50. Next, the baseboard 90 is placed overlapping 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 the surface of the lower tongue-shaped portion 13b. The baseboard 90, which is placed on the surface of the wall base 50 via the lower tongue-like portion 13b in this manner, is attached to the wall base 50 below the lower tongue-like 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. This type of construction also produces the same effects as the second construction example described above.

In the second construction example described above, a baseboard 90 is provided as a decorative component, but if a waist-high trim material is provided as a decorative component, a lower insertion port may be formed between the trim material and the wall base. In this case, interior construction similar to that of the second construction example is possible.

1. Metal panel (interior wall material)
REFERENCE SIGNS LIST 10 Metal decorative plate 11 Main body 12 Hook portion 12b Upper tongue portion 13 Lower support portion 13b Lower tongue portion (mounting portion)
14 Folded portion 14b Positioning member support portion 14c Core member support portion 15 Groove portion 16 Insertion opening 20 Core member 21 Upper edge portion of core member 22 Lower end portion of core member 23 One side edge portion of core member 24 Other side edge portion of core member 30 Positioning member 50 Wall base 51 Light-gauge steel-framed wall base (steel-framed base)
61, 62 Base steel plate 71 Front member 82 Spacer 86 Upper insertion port 90 Baseboard (decorative member)
92 Spacer 94 Lower insertion port 98 Lower insertion port

Claims (3)

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. 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. 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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