Heat insulating panel and its joint structure

Abstract

To provide a heat insulation panel, and a joint structure of a heat insulation panel.SOLUTION: A heat insulation panel has: a heat insulation body having a first surface, and a second surface opposite to the first surface; a first inorganic incombustible material brought into contact with the first surface of the heat insulation material body; a first metal plate which covers the first inorganic incombustible material, is bent so as to surround a first end face of the first inorganic incombustible material from outside, includes a first side face plate part substantially parallel to the first surface, and has a tip bent so as to form a first bent part substantially parallel to the first end face of the first inorganic incombustible material; a second metal plate which covers the second surface side, is bent so as to surround the first end face of the heat insulation material body from the outside, is formed with a second side face plate part substantially parallel to the second surface, and has a tip bent so as to form a second bent part substantially horizontal to the first end face of the heat insulation material body; and a fixture for fixing the first metal plate and the second metal plate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One embodiment of the present invention relates to an insulating panel, a method for installing an insulating panel, and a joint structure for an insulating panel, and more specifically to a sandwich panel in which an organic insulating material such as a urethane-based insulating material is sandwiched between metal plates, a method for installing a sandwich panel, and a joint structure for a sandwich panel. [Background technology]

[0002] In buildings and containers such as refrigerated warehouses, sandwich panels made of organic insulating material, such as urethane-based insulating material with excellent thermal insulation properties, sandwiched between metal plates are widely used as insulating panels for exterior walls and wall materials that divide the interior of buildings. Conventionally, a wall is constructed by arranging multiple insulating panels using such organic insulating material and joining the edges of the insulating panels together via a fitting portion. Furthermore, gypsum board is provided at the fitting portion. The gypsum board is fixed to the insulating panel with screws. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 61-57736 [Patent Document 2] Jikko No. 61-15122 Summary of the Invention [Problem to be solved by the invention]

[0004] When a non-combustible board is attached to the fitting of an insulation panel and fastened with screws, the screws and screw holes are exposed in the metal plate. This detracts from the design of the insulation panel, reducing its aesthetic appeal. Another problem is that the metal plate sandwiching the organic insulation material has low strength in the thickness direction of the insulation panel.

[0005] In view of the above problems, one object of one embodiment of the present invention is to provide a heat insulating panel that has excellent design and improved strength. [Means for solving the problem]

[0006] An insulating panel according to one embodiment of the present invention comprises an insulating body having a first surface and a second surface opposite the first surface; a first inorganic non-combustible material in contact with the first surface of the insulating body; a first metal plate covering the first inorganic non-combustible material and bent to surround a first end surface of the first inorganic non-combustible material from the outside, forming a first side panel portion approximately parallel to the first surface, and having a first bent portion at its tip approximately parallel to the first end surface of the first inorganic non-combustible material; a second metal plate covering the second surface, bent to surround a first end surface of the insulating body from the outside, forming a second side panel portion approximately parallel to the second surface, and having a second bent portion at its tip approximately horizontal to the first end surface of the insulating body; and a fastener for fixing the first metal plate and the second metal plate.

[0007] In the above-mentioned insulating panel, the first metal plate has a first cutout portion provided in the first bent portion, and the second metal plate has a second cutout portion provided in the second bent portion, and the first cutout portion and the second cutout portion face each other.

[0008] In the above-mentioned insulating panel, the first bent portion is bent approximately perpendicularly toward the first surface side and approximately parallel to the first end surface of the first inorganic non-combustible material, and the second bent portion is bent approximately perpendicularly toward the second surface side and approximately parallel to the first end surface of the insulating material body.

[0009] In the above-mentioned insulating panel, the fastener has an intermediate portion and folded portions connected to both ends of the intermediate portion, and a first folded portion is sandwiched on one side between the intermediate portion and the folded portion, and a second folded portion is sandwiched on the other side.

[0010] The heat-insulating panel further comprises a first non-combustible board provided between the first side panel portion and the second side panel portion so as to be in contact with the middle portion of the fastener.

[0011] In the above-mentioned insulating panel, the first bent portion is bent approximately perpendicularly toward the second surface side and approximately parallel to the first end surface of the first inorganic non-combustible material, and the second bent portion is bent approximately perpendicularly toward the first surface side and approximately parallel to the first end surface of the insulating material body.

[0012] In the above-mentioned insulating panel, the fixing device has an intermediate portion, a first folded portion connected to both ends of the intermediate portion, and a second folded portion, A first folded portion and a second folded portion are provided between the first folded portion and the second folded portion at both ends of the middle portion.

[0013] The heat insulating panel further comprises a first noncombustible board provided between the first side panel portion and the second side panel portion so as to be in contact with the first bent portion and the second bent portion.

[0014] The heat insulating panel further comprises a reinforcing steel plate provided between the first side panel portion and the first inorganic noncombustible material.

[0015] The joining structure of an insulating panel according to one embodiment of the present invention is an insulating panel joining structure in which a plurality of the above-described insulating panels are arranged and joined in the width direction, and a third non-combustible board is provided so as to contact the first non-combustible board of one of the adjacent insulating panels and the second non-combustible board of the other insulating panel. [Effects of the Invention]

[0016] According to one embodiment of the present invention, since there is no need to provide screws or screw holes on the surface of the insulation panel, the design of the insulation panel can be improved, and the mechanical strength of the insulation panel in the thickness direction can be improved. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing a thermal insulation structure constructed by a method for constructing a thermal insulation panel according to one embodiment of the present invention. [Figure 2]1A is a plan view showing an insulating panel according to an embodiment of the present invention, and FIG. 1B is an end view of the insulating panel cut along line A1-A2. [Figure 3] (A) A diagram showing the shape of the fastener when the insulating panel is viewed from the third direction, (B) A diagram showing the shape of the fastener when the insulating panel is viewed from the non-combustible board in the second direction, and (C) A diagram showing the shape of the fastener when the insulating panel is viewed from the insulating material body in the second direction. [Figure 4] FIG. 2 is a perspective view showing two metal plates facing each other. [Figure 5] 10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 6] 10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 7] 10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 8] 1A is a plan view of a plurality of insulating panels according to an embodiment of the present invention arranged and joined together, and FIG. 1B is an end view of a plurality of insulating panels according to an embodiment of the present invention arranged and joined together. [Figure 9] 1A is a plan view showing an insulating panel according to an embodiment of the present invention, and FIG. 1B is an end view of the insulating panel cut along line A1-A2. [Figure 10] (A) A diagram showing the shape of the fastener when the insulating panel is viewed from the third direction, (B) A diagram showing the shape of the fastener when the insulating panel is viewed from the non-combustible board in the second direction, and (C) A diagram showing the shape of the fastener when the insulating panel is viewed from the insulating material body in the second direction. [Figure 11] FIG. 2 is a perspective view showing two metal plates facing each other. [Figure 12]10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 13] 10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 14] 10A is a view of the two metal plates as viewed from the thermal insulator body in the second direction, and FIG. 10B is a view of the two metal plates as viewed from the third direction. [Figure 15] 1A is a plan view of a heat insulating panel according to one embodiment of the present invention, and FIG. 1B is an end view of a plurality of heat insulating panels according to one embodiment of the present invention when they are arranged and joined together. DETAILED DESCRIPTION OF THE INVENTION

[0018] Each embodiment of the present invention will be described below with reference to the drawings. The disclosure is merely an example, and any modifications that a person skilled in the art can easily make while maintaining the spirit of the invention are naturally included within the scope of the present invention. Furthermore, the drawings may be schematic in terms of the width, thickness, shape, etc. of each part compared to the actual embodiment for clarity of explanation, but these are merely examples and are not intended to limit the interpretation of the present invention. Furthermore, in this specification and each drawing, elements similar to those previously described with reference to the previous drawings are designated by the same reference numerals (or reference numerals with A, B, etc. suffixed thereto), and detailed descriptions may be omitted as appropriate. Furthermore, the letters "first" and "second" attached to each element are convenient labels used to distinguish each element and have no further meaning unless otherwise specified.

[0019] (First embodiment) A heat insulating panel according to one embodiment of the present invention will be described with reference to FIGS.

[0020] [1. Overview] Figure 1 is a perspective view showing a thermal insulation structure 1000 installed by a method for installing a thermal insulation panel 100 according to one embodiment of the present invention. The thermal insulation structure 1000 shown in Figure 1 is installed in, for example, a refrigerated freezer or container. The thermal insulation structure 1000 comprises a plurality of thermal insulation panels 100_1 to 100_4. In the following description, the thermal insulation panels 100_1 to 100_4 have the same structure except for their placement in different locations. Therefore, when there is no need to distinguish between the thermal insulation panels 100_1 to 100_4, they will simply be referred to as thermal insulation panels 100.

[0021] The thermal insulation structure 1000 has thermal insulation panels 100_1 to 100_4 arranged side by side in the left-right direction (second direction D2 in FIG. 1). For example, inside a refrigerated / freezer warehouse building, adjacent thermal insulation panels 100 are joined together using a non-combustible board 146. For example, the thermal insulation panel 100_1 is connected to the thermal insulation panel 100_2 by the non-combustible board 146 used for joining. Furthermore, sealants 110a and 110b are filled in the gap between the thermal insulation panels 100_1 and 100_2.

[0022] The structure of the heat insulating panel 100 will now be described in detail.

[0023] [2. Structure of the insulation panel] FIG. 2(A) is a plan view of an insulating panel 100 according to one embodiment of the present invention, and FIG. 2(B) is an end view of the insulating panel 100 cut along line A1-A2. In the plan view of the insulating panel 100 shown in FIG. 2(A), the exterior or outdoor side is shown. In the end view shown in FIG. 2(B), the upper side is the exterior or outdoor side, and the lower side is the interior or indoor side. In the following drawings, the length of the insulating panel 100 along the first direction D1 is defined as thickness T1, the length along the second direction D2 is defined as width W1, and the length along the third direction D3 is defined as height H1. The coordinate axes shown in each drawing indicate the first direction D1, the second direction D2, and the third direction D3, with the arrows pointing in the positive (+) direction. The opposite directions to the first direction D1, the second direction D2, and the third direction D3 are also called negative (-) directions, and are described as the negative first direction D1, the negative second direction D2, and the negative third direction D3. The directions (D1, D2, D3) are orthogonal to each other, but the arrangement of the components is not necessarily limited to being orthogonal.

[0024] The insulating panel 100 is in the form of a rectangular plate having a thickness T1 and width W1 and height H1 which are greater than the thickness T1. The thickness T1 of the insulating panel 100 is 50 mm to 300 mm, 50 mm to 200 mm, or 50 mm to 100 mm. The width W of the insulating panel 100 is 100 mm to 1200 mm, 500 mm to 1200 mm, or 800 mm to 1200 mm. The height H1 of the insulating panel 100 is 100 mm to 16000 mm, 1000 mm to 16000 mm, or 5000 mm to 16000 mm. In this embodiment, the thickness T is 50 mm. Both ends of the insulating panel 100 in the width W1 direction are joints 102b, 102c, and the portion of the insulating panel 100 excluding the joints 102b, 102c is a general portion 102a. The joints 102b and 102c are locations for joining adjacent insulation panels 100 together.

[0025] The insulation panel 100 is composed of an insulation body 112, inorganic non-combustible materials 114, 116, 118, a pair of metal plates 122, 124, reinforcing steel plates 132, 134, and non-combustible boards 142, 144. The width W1 of the insulation panel 100 corresponds to the width of the metal plate 122 or 124, the height H1 corresponds to the height of the metal plate 122 or 124, and the thickness T1 corresponds to the total thickness of the metal plates 122, 124, the insulation body 112, and the inorganic non-combustible material 118.

[0026] The thermal insulation body 112 is made of various organic thermal insulation materials, such as urethane-based thermal insulation materials. The thermal insulation body 112 has a first surface 112a, a second surface 112b opposite the first surface 112a, a side surface 112c, and a side surface 112d. The thermal insulation body 112 has a protruding portion 112e that protrudes in the second direction D2 beyond the side surface 112c that is continuous with the first surface 112a, and a protruding portion 112f that protrudes in the second direction D2 beyond the side surface 112d that is continuous with the first surface 112a. The protruding portions 112e and 112f are formed integrally with the thermal insulation body 112. The thermal insulation body 112 is a rectangular plate having a thickness in the first direction D1 of the thermal insulation panel 100, widths W1 and W2 in the second direction D2, and a height in the third direction D3. The widths W1, W2 and height of the heat insulating material body 112 are greater than the thickness of the heat insulating material body 112. Furthermore, the width W1 of the first surface 112a of the heat insulating material body 112 is smaller than the width W2 of the second surface 112b. The width W2 of the second surface 112b of the heat insulating material body 112 is generally the same as the width W of the heat insulating panel 100. Furthermore, the width of the joint 102b corresponds to the width of the protruding portion 112e that protrudes beyond the side surface 112c, or the width of the inorganic noncombustible material 114. Furthermore, the width of the joint 102c corresponds to the width of the protruding portion 112f that protrudes beyond the side surface 112d, or the width of the inorganic noncombustible material 116.

[0027] The inorganic non-combustible materials 114, 116, and 118 are made of various materials, such as bio-soluble fiber, rock wool, glass wool, calcium silicate board, gypsum board, fiber-mixed gypsum board, or gypsum board. In this embodiment, the inorganic non-combustible materials 114 and 116 are made of rock wool, and the inorganic non-combustible material 118 is made of gypsum board. Various materials with superior non-combustible properties compared to organic insulating materials can be used for the inorganic non-combustible materials 114, 116, and 118. The inorganic non-combustible material 114 is provided on the side surface 112c of the thermal insulation body 112 facing the first surface 112a, spaced apart from the protruding portion 112e in the negative first direction D1. The inorganic non-combustible material 116 is provided on the side surface 112d of the thermal insulation body 112 facing the first surface 112a, spaced apart from the protruding portion 112f in the negative first direction D1. The inorganic noncombustible material 118 is provided on the first surface 112a side of the thermal insulation material body 112. The inorganic noncombustible material 118 has end surfaces 118a and 118b. The inorganic noncombustible material 118 is provided in contact with the thermal insulation material body 112, the inorganic noncombustible material 114, and the inorganic noncombustible material 116. In other words, the inorganic noncombustible materials 114, 116, and 118 are provided on the first surface 112a side of the thermal insulation panel 100, and the protrusions 112e and 112f of the thermal insulation material body 112 are provided on the second surface 112b side. The inorganic noncombustible materials 114, 116, and 118 are rectangular plate-shaped and have a thickness in the first direction D1 of the thermal insulation panel 100, a width in the second direction D2 of the thermal insulation panel 100, and a height in the third direction of the thermal insulation panel 100. In this embodiment, the inorganic noncombustible materials 114, 116, and 118 are described as being separate components, but an embodiment of the present invention is not limited to this. The inorganic noncombustible materials 114, 116, and 118 may be integrally configured. The width of the inorganic noncombustible material 114 is approximately the same as the width of the protruding portion 112e. The width of the inorganic noncombustible material 116 is approximately the same as the width of the protruding portion 112f. The width of the inorganic noncombustible material 118 is approximately the same as the width W2 of the heat insulating material body 112. Note that the inorganic noncombustible materials 114 and 116 do not necessarily need to be provided, and the heat insulating material body 112 may be provided instead of the inorganic noncombustible materials 114 and 116.

[0028] The reinforcing steel plate 132 is provided between the side panel portion 122c and the inorganic non-combustible material 114. The reinforcing steel plate 134 is provided between the side panel portion 122e and the inorganic non-combustible material 116. Various materials can be used for the reinforcing steel plates 132, 134, such as iron plates. The thickness of the reinforcing steel plates 132, 134 is greater than the thickness of the metal plates 122, 124, and is approximately 0.8 mm to 1.6 mm. In this embodiment, the thickness of the reinforcing steel plates 132, 134 is 1.6 mm. The reinforcing steel plates 132, 134 are rectangular plates having a thickness in the first direction D1 of the insulation panel 100, a width in the second direction D2 of the insulation panel 100, and a height in the third direction of the insulation panel 100. The width of the reinforcing steel plate 132 is shorter than the width of the inorganic noncombustible material 114 to provide an adjustment margin when arranging the inorganic noncombustible material 114, and the width of the reinforcing steel plate 134, like the reinforcing steel plate 132, is shorter than the width of the inorganic noncombustible material 116. The width of the reinforcing steel plate 132 may be approximately the same as the width of the inorganic noncombustible material 114, or the width of the reinforcing steel plate 134 may be approximately the same as the width of the inorganic noncombustible material 116. By using the reinforcing steel plates 132, 134, the strength of the insulation panel 100 can be improved. Note that the reinforcing steel plates 132, 134 may be omitted from the insulation panel 100.

[0029] The metal plates 122, 124 can be made of various materials, such as Galvalume Steel Plate (registered trademark), zinc-plated steel plate, stainless steel plate, and aluminum plate. Galvalume Steel Plate (registered trademark) is a steel plate whose peripheral surface is covered with a plating layer. Galvalume Steel Plate (registered trademark) prevents corrosion of the steel plate by forming the plating layer from an alloy of zinc and aluminum. The thickness of the metal plates 122, 124 is thinner than that of the reinforcing steel plates 132, 134, and is approximately 0.3 mm to 2.3 mm. In this embodiment, the thickness of the reinforcing steel plates 132, 134 is 0.4 mm.

[0030] The metal plate 122 has a main body plate portion 122a, end plate portions 122b and 122d, side plate portions 122c and 122e, and bent portions 122f and 122g. The metal plate 122 covers the inorganic noncombustible material 118, surrounds end faces 118a and 118b of the inorganic noncombustible material 118 from the outside, and is bent twice to form a U-shape in cross section. In other words, the metal plate 122 is bent to cover the inorganic noncombustible material 118 and surround end face 118a of the inorganic noncombustible material 118 from the outside, forming side plate portion 122c that is approximately parallel to first surface 112a, and bent portion 122f whose tip is approximately parallel to end face 118a of the inorganic noncombustible material. In addition, the metal plate 122 is bent so as to surround the end face 118b of the inorganic non-combustible material 118 from the outside, forming a side plate portion 122e that is approximately parallel to the first surface 112a, and is bent so as to form a bent portion 122g whose tip is approximately parallel to the end face 118b of the inorganic non-combustible material.

[0031] The metal plate 124 has a main body plate portion 124a, end surface plate portions 124b and 124d, side surface plate portions 124c and 124e, and bent portions 124f and 124g. The metal plate 124 covers the second surface 112b of the heat insulator body 112, surrounds the end surfaces 112g and 112h of the heat insulator body 112 from the outside, and has ends that are bent twice to form a U-shape in cross section. In other words, the metal plate 124 is bent to cover the second surface 112b side and surround the end surface 112g of the heat insulator body 112 from the outside, forming a side surface plate portion 124c that is approximately parallel to the second surface 112b, and the tip is bent so as to form a bent portion 124f that is approximately horizontal to the end surface 112g of the heat insulator body 112. The metal plate 124 is bent so as to surround the end face 112h of the heat insulating material body 112 from the outside, forming a side panel portion 124e that is approximately parallel to the second face 112b, and the tip is bent so as to form a bent portion 124g that is approximately horizontal to the end face 112h of the heat insulating material body 112.

[0032] Use of the metal plates 122, 124 can prevent the heat insulating panel 100 from being deformed, discolored, deteriorated, or otherwise altered. In addition, the heat insulating panel 100 has improved design properties, such as a better appearance.

[0033] In the metal plate 122, the main body plate portion 122a covers the inorganic noncombustible material 118. The end surface plate portion 122b is connected to an end of the main body plate portion 122a and bent, covering at least the end surface 118a of the inorganic noncombustible material 118. The side surface plate portion 122c is connected to an end of the end surface plate portion 122b opposite to the end connected to the main body plate portion 122a and bent, covering the upper surface of the reinforcing steel plate 132 (the surface opposite to the surface of the reinforcing steel plate 132 that contacts the inorganic noncombustible material 114). The bent portion 122f is bent approximately perpendicularly toward the first surface 112a, parallel to the end surface plate portion 122b. Specifically, the bent portion 122f is provided so as to face the end surface plate portion 122b. The length of the bent portion 122f in the first direction D1 may be shorter than the thickness of the inorganic noncombustible material 114. The end plate portion 122d is connected to an end of the main plate portion 122a and is bent to cover at least the end surface 118b of the inorganic noncombustible material 118. The side plate portion 122e is connected to an end of the end plate portion 122d opposite to the end connected to the main plate portion 122a and is bent to cover the upper surface of the reinforcing steel plate 134 (the surface opposite to the surface of the reinforcing steel plate 134 that contacts the inorganic noncombustible material 116). The bent portion 122g is arranged parallel to the end plate portion 122d. Specifically, the bent portion 122g is arranged opposite to the end plate portion 122d. The length of the bent portion 122g in the first direction D1 may be shorter than the thickness of the inorganic noncombustible material 116. The main plate portion 122a is in contact with a surface of the inorganic noncombustible material 118 that is parallel to the second direction D2. The side plate portion 122c contacts a surface of the inorganic noncombustible material 114 that is parallel to the second direction D2, and the side plate portion 122e contacts a surface of the inorganic noncombustible material 116 that is parallel to the second direction D2. The end plate portion 122b contacts a surface of the inorganic noncombustible materials 114, 118 that is parallel to the first direction D1, and the end plate portion 122d contacts a surface of the inorganic noncombustible materials 116, 118 that is parallel to the first direction D1.

[0034] In the metal plate 124, the main body plate portion 124a covers the heat insulating material main body 112. The end surface plate portion 124b is connected to an end of the main body plate portion 124a and bent, covering the end surface 112g of the protruding portion 112e. The side surface plate portion 124c is connected to an end of the end surface plate portion 124b opposite to the end connected to the main body plate portion 124a and bent, covering the underside of the protruding portion 112e (the surface of the protruding portion 112e facing the inorganic noncombustible material 114). The bent portion 124f is bent approximately perpendicularly toward the second surface 112b, parallel to the end surface plate portion 124b. Specifically, the bent portion 124f is provided so as to face the end surface plate portion 124b. The length of the bent portion 124f in the first direction D1 may be shorter than the thickness of the inorganic noncombustible material 114. The length of the bent portion 124f in the first direction D1 may be substantially the same as the length of the bent portion 122f in the first direction D1. The end plate portion 124d is connected to an end of the main body plate portion 124a and bent to cover the end surface 112h of the protruding portion 112f. The side plate portion 124e is connected to an end of the end plate portion 124d opposite to the end connected to the main body plate portion 124a and bent to cover the lower surface of the protruding portion 112f (the surface of the protruding portion 112f facing the inorganic noncombustible material 116). The bent portion 124g is arranged to be parallel to the end plate portion 124d. Specifically, the bent portion 124g is arranged to face the end plate portion 124d. The length of the bent portion 124g in the first direction D1 may be shorter than the thickness of the inorganic noncombustible material 116. Furthermore, the length of the bent portion 124g in the first direction D1 may be substantially the same as the length of the bent portion 122g in the first direction D1. The main body plate portion 124a is in contact with a surface of the heat insulator body 112 that is parallel to the second direction D2. The side surface plate portion 124c is in contact with a surface of the protruding portion 112e of the heat insulator body 112 that is parallel to the second direction D2, and the side surface plate portion 124e is in contact with a surface of the protruding portion 112f of the heat insulator body 112 that is parallel to the second direction D2. The end surface plate portion 124b is in contact with a surface of the protruding portion 112e of the heat insulator body 112 that is parallel to the first direction D1, and 124d is in contact with a surface of the protruding portion 112f of the heat insulator body 112 that is parallel to the first direction D1.

[0035] The metal plates 122 and 124 are provided such that the side plate portions 122c and 122e and the side plate portions 124c and 124e face each other. The bent portion 122f and the bent portion 124f are arranged side by side in the first direction D1. The bent portion 122g and the bent portion 124g are arranged side by side in the first direction D1. A fixing member 152 is provided to fix the bent portion 122f and the bent portion 124f. In addition, a fixing member 154 is provided to fix the bent portion 122g and the bent portion 124g. One end of the fixing member 152 is fitted with the bent portion 122f, and the other end is fitted with the bent portion 124f. In addition, one end of the fixing member 154 is fitted with the bent portion 122g, and the other end is fitted with the bent portion 124g.

[0036] In the heat insulating panel 100, a recess 104a is formed by the end panel portion 124b and side panel portion 124c in contact with the protruding portion 112e, the side surface 112c of the heat insulating material body 112, and the side surface panel portion 122c in contact with the reinforcing steel plate 132. A recess 104b is formed by the end panel portion 124d and side surface panel portion 124e in contact with the protruding portion 112f, the side surface 112d of the heat insulating material body 112, and the side surface panel portion 122e in contact with the reinforcing steel plate 134. The recesses 104a, 104b extend in a groove-like shape over the entire length of the heat insulating panel 100 in the third direction D3. In this embodiment, a non-combustible board 142 is provided in the recess 104a of the heat insulating panel 100. The non-combustible board 142 is provided between the side surface panel portion 122c and the side surface panel portion 124c so as to contact an intermediate portion of the fastener 152. The recess 104b is provided with a non-combustible board 144. The non-combustible board 144 is provided between the side panel portion 122e and the side panel portion 124e so as to contact the middle portion of the fixture 154.

[0037] The non-combustible board 142 has a lower thermal conductivity than the steel material that makes up the metal plates 122, 124, and inorganic materials such as hard gypsum board or calcium silicate board can be used. In particular, when gypsum board is used, moisture (crystal water) contained in the non-combustible board 142 is released in the event of a fire, suppressing the temperature rise of the heat insulating panel 100. The non-combustible board 142 is a rectangular plate having a thickness in the first direction D1 of the heat insulating panel 100, a width in the second direction D2 of the heat insulating panel 100, and a height in the third direction D3 of the heat insulating panel 100. The width of the non-combustible board 142 is determined appropriately depending on the distance between adjacent heat insulating panels 100. The width of the non-combustible board 142 is 30 mm to 100 mm, 50 mm to 100 mm, or 65 mm to 85 mm. In this embodiment, the width of the non-combustible board 142 is 75 mm. The thickness of the non-combustible board 142 is determined appropriately depending on the thickness T of the heat insulating panel 100, the shape of the recess 104a, and the thickness of the reinforcing steel plates 132, 134. The thickness of the non-combustible board 142 is 3 mm to 30 mm, 5 mm to 20 mm, or 8 mm to 15 mm. The thickness of the non-combustible board 142 is preferably about 5 mm to 15 mm to prevent opening or deformation of the ends in the second direction D2, including the side plate portions 122c, 122e, 124c, and 124e of the metal plates 122, 124, in the event of a fire. In this embodiment, the thickness T of the heat insulating panel is 50 mm, and the thickness of the non-combustible board 142 is 9.5 mm.

[0038] Figures 3(A) to 3(C) are diagrams illustrating the shape of the fixing device 152. Figure 3(A) is a diagram showing the shape of the fixing device 152 when the insulation panel 100 is viewed from the third direction D3, Figure 3(B) is a diagram showing the shape of the fixing device 152 when the insulation panel 100 is viewed from the non-combustible board 142 in the second direction D2, and Figure 3(C) is a diagram showing the shape of the fixing device 152 when the insulation panel 100 is viewed from the thermal insulation material body 112 in the second direction D2. Although not shown, the fixing device 154 has the same shape and dimensions as the fixing device 152.

[0039] 3(A), fixture 152 has intermediate portion 152a, connecting portions 152b and 152c connected to intermediate portion 152a, and folded portions 152d and 152e connected to connecting portions 152b and 152c. The dimensions of fixture 152 are defined as follows: R1 is the length between connecting portions 152b and 152c; R2 is the length between folded portions 152d and 152e; R4 is the outer height of connecting portions 152b and 152c; and R3 is the inner diameter height of connecting portions 152b and 152c. Furthermore, R5 is the length of each of connecting portions 152b and 152c.

[0040] The thickness of the fixing device 152 is set to 1.0 mm. The length R1 is required to be greater than the sum of the length of the bent portion 122f in the first direction D1, the length of the bent portion 124f in the first direction D1, and the length of the non-combustible board 142 in the first direction D1. The length R2 is required to be greater than the sum of the length of the non-combustible board 142 in the first direction D1 and the thickness of the metal plates 122 and 124. The length R3 is required to be greater than the thickness of the metal plates 122 and 124. The length R4 is the sum of the thickness of the middle portion 152a, the thickness of the folded portion 152d, and the length R3.

[0041] As shown in Figures 3(B) and 3(C), when the heat insulating panel 100 is viewed from the non-combustible board 142 in the second direction D2, a through hole 152f is provided in the center of the middle portion 152a. A rod is inserted into the through hole 152f. The diameter R7 of the through hole 152f is set appropriately according to the diameter of the rod. Furthermore, the length R8 is the length of the middle portion 152a in the first direction D1.

[0042] In this embodiment, the length R1 is 22.5 mm, the length R2 is 12.5 mm, the length R3 is 2 mm, the length R4 is 4 mm, the length R5 is 6 mm, and the length R6 is 5 mm. The diameter R7 of the through hole is an M3 tapped hole, and the diameter R8 is 24.5 mm. An embodiment of the present invention is not limited to this, and the dimensions of the fastener 152 may be set appropriately depending on the thicknesses of the bent portions 122f, 124f, the metal plates 122, 124, and the thickness of the non-flammable board 142, etc.

[0043] Bent portion 122f of metal plate 122 is sandwiched between intermediate portion 152a and folded portion 152d of fixing device 152, and bent portion 124f of metal plate 124 is sandwiched between intermediate portion 152a and folded portion 152e. This allows metal plate 122 and metal plate 124 to be fixed by fixing device 152.

[0044] Next, a method for fixing metal plates 122 and 124 together with fixing device 152 will be described with reference to Figures 4 to 7. In the following description, attention will be focused on the structure at joint 102b. Since the structure at joint 102c is similar to that at joint 102b, a detailed description of the method for fixing metal plates 122 and 124 together with fixing device 154 will be omitted.

[0045] FIG. 4 is a perspective view showing the metal plates 122 and 124 facing each other. For clarity, FIG. 4 does not show any components other than the metal plates 122 and 124. An inorganic non-combustible material may be provided between the main body plate 122a and the main body plate 124a to maintain the height between the main body plate 122a and the main body plate 124a, and a non-combustible board 142 may be provided between the side plate 122c and the side plate 124c to maintain the distance between the side plate 122c and the side plate 124c. The distance between the side plate 122c and the side plate 124c is preferably greater than the length R6 of the fastener 152 and less than the length R8.

[0046] The bent portion 122f has a cutout portion 122h. The bent portion 122f may have a plurality of cutout portions 122h arranged at predetermined intervals in the third direction D3. The bent portion 124f also has a cutout portion 124h. The bent portion 124f may have a plurality of cutout portions 124h arranged at predetermined intervals in the third direction D3. The cutout portions 122h and 124h are arranged so as to be side by side in the first direction D1. The cutout portions 122h and 124h are arranged at positions facing each other. The cutout portions 122h and 124h are arranged so that the fixing device 152 can sandwich the bent portions 122f and 124f. The length of the cutout portion 122h in the third direction D3 is preferably longer than the length R8 of the fixing device 154, for example.

[0047] Next, a method for fixing the bent portions 122f and 124f with the fixing device 152 will be described with reference to FIGS. 5(A) to 7(B).

[0048] Figures 5(A), 6(A), and 7(A) are views of the metal plates 122 and 124 when viewed in the second direction D2 from the heat insulator body 112. Figures 5(B), 6(B), and 7(B) are views of the metal plates 122 and 124 when viewed from the third direction D3.

[0049] 5(B), a rod 150 is inserted into the through-hole 152f of the fixture 152. The fixture 152 is inserted into the gap between the side plate portion 122c and the side plate portion 124c in the negative second direction D2 using the rod 150. Thereafter, the fixture 152 is rotated by 90° around the axis of the second direction D2 using the rod 150.

[0050] 6(B), the folded portions 152d and 152e of the fixture 152 are parallel to the bent portions 122f and 124f. In this state, the bent portion 122f is sandwiched between the intermediate portion 152a and the folded portion 152d, and the bent portion 124f is sandwiched between the intermediate portion 152a and the folded portion 152e.

[0051] As shown in FIG. 7(A), bent portion 122f is sandwiched in the gap between intermediate portion 152a and folded portion 152d of fixture 152, and bent portion 124f is sandwiched in the gap between intermediate portion 152a and folded portion 152e of fixture 152. In this state, fixture 152 is slid in third direction D3 using rod 150. This allows fixture 152 to be moved to any position of bent portions 122f and 124f. Finally, rod 150 is pulled out of through-hole 152f.

[0052] Through the above steps, the fasteners 152 can be fixed to the bent portions 122f, 124f. By providing the cutouts 152h, 154h in the bent portions 122f, 124f, the fasteners 152 can be rotated inside the metal plates 122, 124. Furthermore, by sandwiching the fasteners 152 from the ends of the cutouts 152h, 154h, the positions of the metal plates 122, 124 can be fixed. By providing the fasteners 152 at predetermined intervals in the bent portions 122f, 124f extending in the third direction D3, the metal plates 122, 124 can be fixed more firmly. Note that the number of cutouts 152h, 154h and the number of fasteners 152 do not have to be the same. The number of cutouts 152h, 154h may be fewer than the number of fasteners 152.

[0053] In the joint portion 102c, the fixing member 154 can be fixed to the bent portions 122g and 124g in the same manner as the method shown in FIGS. 5(A) to 7(B).

[0054] Inorganic non-combustible materials 114, 116, 118 are placed in the space created by the metal plates 122, 124 and fasteners 152, 154. A reinforcing steel plate 132 may be placed between the inorganic non-combustible material 114 and side panel portion 122c, and a reinforcing steel plate 134 may be placed between the inorganic non-combustible material 116 and side panel portion 122e. An organic insulating material is injected into the space created by the metal plates 122, 124, fasteners 152, 154, and inorganic non-combustible material 118 to form the insulating material body 112. The insulating panel 100 can be manufactured by the above steps.

[0055] When a non-combustible board is attached to the fitting of an insulation panel and fastened with screws, the screws and screw holes are exposed in the metal plate. This detracts from the design of the insulation panel, reducing its aesthetic appeal. Another problem is that the metal plate sandwiching the organic insulation material has low strength in the thickness direction of the insulation panel.

[0056] The insulation panel 100 according to one embodiment of the present invention does not require mechanical fastening using fasteners such as screws. This eliminates the need for screws or screw holes in the metal plates 122, 124. This improves the design and aesthetic appeal of the insulation panel. It also prevents moisture from entering through the screw holes formed in the metal plates 122, 124, thereby suppressing corrosion. The metal plates 122, 124 are provided with bent portions 122f, 122g and bent portions 124f, 124g that are bent in the first direction D1. This improves the bending strength of the insulation panel 100, even when pressure is applied to it from the first direction D1.

[0057] [3. Joint structure and construction method of insulation panels] Next, the joining structure and construction method of the insulating panel 100 according to one embodiment of the present invention will be described with reference to Fig. 8. Fig. 8 shows the insulating structure 1000 when insulating panels 100_1 and 100_2 according to one embodiment of the present invention are joined adjacent to each other.

[0058] Figure 8(A) is a plan view of a joining structure when a plurality of heat insulating panels 100 according to one embodiment of the present invention are lined up and joined together. Figure 8(B) is an end view of joints 102b, 102c of joined heat insulating panels 100_1, 100_2 cut along line B1-B2.

[0059] The insulating panels 100_1, 100_2 are arranged in the second direction D2 with their thicknesses T and widths W directed horizontally and their heights H directed vertically. That is, the end panel portions 122b, 124b of the insulating panel 100_1 and the end panel portions 122d, 124d of the insulating panel 100_2 are arranged opposite each other. A non-combustible board 146 is fitted into the recess 104a of the insulating panel 100_1 and the recess 104b of the insulating panel 100_2. The non-combustible board 146 is provided over the entire length of the insulating panels 100_1, 100_2 in the third direction D3. In FIG. 8(A), the dotted lines shown on the insulating panels 100_1, 100_2 indicate the positions where the non-combustible boards 142, 144, 146 are provided.

[0060] Furthermore, the gap between the adjacent heat insulating panels 100_1 and 100_2 is filled with sealants 110a and 110b. As the sealants 110a and 110b, various sealants having fire resistance and waterproof properties, such as silicone-based sealants, can be used.

[0061] In the joining structure of the insulation panels 100_1, 100_2 according to one embodiment of the present invention, the metal plates 122, 124 are fixed by fasteners 152, 154. This makes it possible to suppress deformation of the side plate portions 122c, 124c, 122e, 124e of the metal plates 122, 124 even in the event of a fire. Therefore, it is possible to prevent opening and deformation of the ends in the second direction D2, including the side plate portions 122c, 124c, 122e, 124e of the metal plates 122, 124 on the side where the fire has occurred.

[0062] Furthermore, in this embodiment, the non-combustible boards 142, 144, 146 contain moisture. Therefore, in the event of a fire, even if the heat is transferred to the non-combustible boards 142, 144, 146 at the joints 102b, 102c at the ends of the heat insulating panel 100 in the second direction D2, the moisture in the non-combustible boards 142, 144, 146 can be released to the periphery of the joints 102b, 102c. This suppresses a temperature rise at the joints 102b, 102c for a predetermined period of time, and prevents opening or deformation of the ends of the metal plates 122, 124 in the second direction D2, including the side plate portions 122c, 124c, 122e, 124e.

[0063] This prevents gaps caused by thermal deformation between the components of joints 102b, 102c, which would allow heat and flames to be transferred directly to the organic insulating material, causing the organic insulating material to burn and spread, as was the case with conventional methods. Alternatively, it prevents metal plates 122, 124 from deforming in an opening direction at joints 102b, 102c, for example, which would allow oxygen to be supplied to the organic insulating material inside from the deformed areas, causing the organic insulating material to burn and spread, and it also prevents fire accidents in insulation panel 100 which uses organic insulating material.

[0064] Furthermore, inorganic non-combustible materials 114, 116, 118 are provided on the indoor or indoor side of the heat insulating panel 100. Therefore, in the event of a fire, opening or deformation in the second direction D2, including the side panel portions of the metal plate, can be prevented, and the spread of fire to the general portion 102a of the heat insulating panel 100 can be prevented.

[0065] Furthermore, the heat insulating panel 100 according to one embodiment of the present invention is configured such that the non-combustible board 142 is fixed in advance at the joint 102b, and the non-combustible board 144 is fixed to the joint 102c. Therefore, at the construction site, it is only necessary to fit the non-combustible board 146 into the recess 104a of the heat insulating panel 100_1 and the non-combustible board 146 into the recess 104b of the adjacent heat insulating panel 100_2. Thereafter, the gap between the heat insulating panel 100_1 and the heat insulating panel 100_2 is filled with the sealants 110a and 110b. This allows the construction time at the construction site to be shortened.

[0066] (Second embodiment) In this embodiment, the configuration of a heat insulating panel 100A which is partially different from the heat insulating panel 100 according to the first embodiment will be described with reference to Figures 9 to 15. In the description of the second embodiment, the same parts and members as those in the first embodiment will be given the same reference numerals and their description will be omitted, and the different parts will be mainly described.

[0067] [4. Structure of the insulation panel] Fig. 9(A) is a plan view of an insulating panel 100A according to one embodiment of the present invention, and Fig. 9(B) is an end view of the insulating panel 100 when cut along line C1-C2. In the insulating panel 100A according to this embodiment, the configuration of joints 102b, 102c is different from the configuration of joints 102b, 102c of the insulating panel 100. Specifically, the shapes of bent portions 122f, 122g of the metal plate 122 and bent portions 124f, 124g of the metal plate 124 are different from those of the first embodiment. In addition, due to the shapes of bent portions 122f, 122g, 124f, 124g of the metal plates 122, 124, the shapes of fasteners 156, 158 are different from the shapes of fasteners 152, 154 of the first embodiment.

[0068] The metal plate 122 has bent portions 122f, 122g that are bent substantially perpendicularly toward the second surface 112b and substantially parallel to the end faces 118a, 118b of the inorganic noncombustible material 118. The metal plate 124 has bent portions 124f, 124g that are bent substantially perpendicularly toward the first surface 112a and substantially parallel to the end faces 112g, 112h of the heat insulating material body 112. In other words, the bent portion 122f of the metal plate 122 is bent in the first direction D1 relative to the side panel portion 122c. The bent portion 124f of the metal plate 124 is bent in the negative first direction D1 relative to the side panel portion 124c. A fixing device 154 is provided to cover the side panel portion 122c, the bent portion 122f, the side panel portion 124c, and the bent portion 124f. Furthermore, a fixture 156 is provided so as to cover the side plate portion 122e, the bent portion 122g, the side plate portion 124e, and the bent portion 124g.

[0069] The fixing device 154 is provided so as to have the same length as the protruding portion 112e in the second direction D2, but is not limited to this. The fixing device 154 may be shorter than the length of the protruding portion 112e or the length of the non-combustible board 142 in the second direction D2. The fixing device 156 is provided so as to have the same length as the protruding portion 112f in the second direction D2, but is not limited to this. The fixing device 156 may be shorter than the length of the protruding portion 112f or the length of the non-combustible board 144 in the second direction D2.

[0070] As shown in FIG. 9(A), a non-combustible board 142 is provided at the joint 102b. The non-combustible board 142 is provided between the side panel 122c and the side panel 124c so as to contact the bent portions 122f and 124f. The width of the non-combustible board 142 is smaller than the width of the protruding portion 112e. The width of the non-combustible board 142 is 10 mm to 40 mm, 10 mm to 30 mm, or 10 mm to 20 mm. In this embodiment, the width of the non-combustible board 144 is 15 mm.

[0071] A non-combustible board 144 is provided in the joint portion 102c and in the recessed portion 104b. The non-combustible board 144 is provided between the side panel portion 122e and the side panel portion 124e so as to contact the bent portions 122g and 124g. The width of the non-combustible board 144 is smaller than the width of the protruding portion 112f. The width of the non-combustible board 144 is 10 mm to 40 mm, 10 mm to 30 mm, or 10 mm to 20 mm. In this embodiment, the width of the non-combustible board 144 is 15 mm.

[0072] Figures 10(A) to 10(C) are diagrams illustrating the shape of the fixing device 156. Figure 10(A) is a diagram showing the shape of the fixing device 156 when the heat insulating panel 100 is viewed from the third direction D3, Figure 10(B) is a diagram showing the shape of the fixing device 156 when the heat insulating panel 100 is viewed from the non-combustible board 142 in the second direction D2, and Figure 10(C) is a diagram showing the shape of the fixing device 156 when the heat insulating panel 100 is viewed from the heat insulating material body 112 in the second direction D2. Although not shown, the fixing device 154 has the same shape and dimensions as the fixing device 152.

[0073] 10(A), fixture 156 has intermediate portion 156a and folded portions 156b and 156c connected to intermediate portion 156a. The dimensions of fixture 156 are defined as R1, the length between folded portions 156b and 156c, and R4, the outer height of folded portions 156b and 156c.

[0074] The thickness of fixture 156 is assumed to be 1 cm. Length R1 should be greater than the sum of the length of bent portion 122f in first direction D1 and the length of bent portion 124f in first direction D1. Length R4 is the sum of the thickness of middle portion 156a and the length of folded portion 156b in second direction D2.

[0075] As shown in Figures 10(B) and 10(C), when the heat insulating panel 100 is viewed from the non-combustible board 142 in the second direction D2, a through hole 156f is provided in the center of the middle portion 156a. A rod is inserted into the through hole 156f. The diameter R7 of the through hole 156f is set appropriately according to the diameter of the rod. The length R6 is the length of the folded-back portion 156b in the third direction D3. The length R8 is the length of the middle portion 156a in the first direction D1.

[0076] In this embodiment, the thickness of the fastener 156 is 1.6 mm, the length R1 is 12.6 mm, the length R4 is 14.2 mm, the length R6 is 9 mm, and the length R8 is 15.8 mm. The diameter R7 of the through-hole is an M3 tapped hole. However, this embodiment of the present invention is not limited to this, and the diameter R7 may be appropriately set depending on the thicknesses of the bent portions 122f, 124f, the metal plates 122, 124, and the thickness of the non-flammable board 142, etc.

[0077] Side plate portions 122c and 122e and bent portions 122f and 124f are fitted into a recess formed by intermediate portion 156a and folded portions 156b and 156c of fixture 156. In other words, folded portions 122f and 124f are provided between folded portions 156b and 156c. This allows metal plate 122 and metal plate 124 to be fixed together by fixture 156.

[0078] Next, a method for fixing metal plates 122 and 124 together with fixing device 156 will be described with reference to Figures 11 to 14. In the following description, attention will be focused on the structure at joint 102b. Since the structure at joint 102c is similar to that of joint 102b, a detailed description of the method for fixing metal plates 122 and 124 together with fixing device 158 will be omitted.

[0079] Fig. 11 is a perspective view showing the metal plates 122 and 124 facing each other. For ease of understanding, Fig. 11 does not show components other than the metal plates 122 and 124. A non-combustible board 142 may be provided between the main body plate portion 122a and the main body plate portion 124a to maintain the height between the main body plate portion 122a and the main body plate portion 124a. The distance between the side plate portion 122e and the side plate portion 124c is preferably smaller than the length R1 of the fastener 156 and larger than the length of the bent portions 122f and 124f in the first direction D1.

[0080] The bent portion 122f has a cutout portion 122h. The bent portion 122f may have a plurality of cutout portions 122h at predetermined intervals in the third direction D3. The bent portion 124f also has a cutout portion 124h. The bent portion 124f may have a plurality of cutout portions 124h at predetermined intervals in the third direction D3. The cutout portions 122h and 124h are provided so as to be arranged side by side in the first direction D1. In other words, the cutout portions 122h and 124h are provided at positions facing each other. The cutout portions 122h and 124h are provided so that the fixing device 156 can sandwich the bent portions 122f and 124f. The length of the notch 122h in the third direction D3 is preferably longer than the length R8 of the fixture 156, for example.

[0081] Next, a method for fixing the bent portions 122f and 124f with the fixing device 156 will be described with reference to FIGS. 12(A) to 14(B).

[0082] Figures 12(A), 13(A), and 14(A) are views of the metal plates 122 and 124 when viewed in the second direction D2 from the heat insulator body 112. Figures 12(B), 13(B), and 14(B) are views of the metal plates 122 and 124 when viewed from the third direction D3.

[0083] As shown in FIG. 12(B), a rod 150 is inserted into the through-hole 156f of the fixture 156. The fixture 156 is inserted into the gap between the side plate portions 122c and 124c in the negative second direction D2 using the rod 150. At this time, it is preferable to insert the fixture 156 so that the ends of the folded-back portions 156b and 156c of the fixture 156 are positioned in the negative second direction D2 relative to the positions where the bent portions 122f and 124f are provided. Thereafter, the fixture 156 is rotated 90° around the axis of the negative second direction D2 using the rod 150.

[0084] 13(B), the surfaces of the folded portions 156b and 156c of the fixture 156 are parallel to the surfaces of the side plate portions 122c and 124c. In this state, the rod 150 is moved in the second direction D2 so that the side plate portions 122c and 124c are provided between the folded portions 156b and 156c.

[0085] As shown in Figure 14(A), side plate portions 122c and 124c are provided between folded portions 156b and 156c. In this state, fixing device 156 is slid in third direction D3 using rod 150. This allows fixing device 156 to be moved to any position on folded portions 122f and 124f. Finally, rod 150 is pulled out of through-hole 152f in second direction D2.

[0086] Through the above steps, the fasteners 156 can be fixed to the side plate portions 122c, 124c and the bent portions 122f, 124f. By providing the notches 152h, 154h in the bent portions 122f, 124f, the fasteners 156 can be rotated inside the metal plates 122, 124. Furthermore, by sandwiching the side plate portions 122c, 124c with the fasteners 152 from the ends of the notches 152h, 154h, the positions of the metal plates 122, 124 can be fixed. By providing the fasteners 156 at a predetermined interval in the bent portions 122f, 124f extending in the third direction D3, the metal plates 122, 124 can be more firmly fixed. Note that the number of the cutouts 152h, 154h does not have to be the same as the number of the fasteners 152. The number of the notches 152h, 154h may be less than the number of the fixing members 152.

[0087] In the joint portion 102c, the fixing member 158 can be fixed to the bent portions 122g and 124g in the same manner as the method shown in FIGS. 12(A) to 14(B).

[0088] Inorganic non-combustible materials 114, 116, 118 are placed in the space created by the metal plates 122, 124 and fasteners 156, 154. A reinforcing steel plate 132 may be placed between the inorganic non-combustible material 114 and side panel portion 122c, and a reinforcing steel plate 134 may be placed between the inorganic non-combustible material 116 and side panel portion 122e. An organic insulating material is injected into the space created by the metal plates 122, 124, fasteners 156, 154, and inorganic non-combustible material 118 to form the insulating material body 112. The insulating panel 100A can be manufactured by the above steps.

[0089] The insulation panel 100A according to one embodiment of the present invention does not require mechanical fastening using fasteners such as screws. This eliminates the need for screws or screw holes in the metal plates 122, 124. This improves the design of the insulation panel, improving its aesthetic appeal. It also prevents moisture from entering through screw holes formed in the metal plates 122, 124, thereby suppressing corrosion. The metal plates 122, 124 are provided with bent portions 122f, 122g and bent portions 124f, 124g that are bent in the first direction D1. This improves the bending strength of the insulation panel 100, even when pressure is applied to it from the first direction D1.

[0090] [5. Joint structure and construction method of thermal insulation panels] Next, the joining structure and construction method of the heat insulating panel 100A according to one embodiment of the present invention will be described with reference to Figure 15. Figures 15(A) and 15(B) show the joining structure when heat insulating panels 100A_1 and 100A_2 according to one embodiment of the present invention are joined adjacent to each other.

[0091] Figure 15(A) is a plan view of a joining structure when a plurality of heat insulating panels 100A according to one embodiment of the present invention are lined up and joined together, and Figure 15(B) is an end view of joints 102b and 102c of joined heat insulating panels 100A_1 and 100A_2 taken along line D1-D2.

[0092] The insulating panels 100A_1, 100A_2 are arranged in the second direction D2 with their thicknesses T and widths W oriented horizontally and their heights H oriented vertically. That is, the end panel portions 122b, 124b of the insulating panel 100A_1 and the end panel portions 122d, 124d of the insulating panel 100A_2 are arranged opposite each other. A non-combustible board 146 is fitted into the recess 104a of the insulating panel 100_1 and the recess 104b of the insulating panel 100_2. The non-combustible board 146 is provided over the entire length of the insulating panels 100_1, 100_2 in the third direction D3. In FIG. 15(A), the dotted lines shown on the insulating panels 100_1, 100_2 indicate the positions where the non-combustible boards 142, 144, 146 are provided.

[0093] Furthermore, seal materials 110a and 110b are filled in the gap between the adjacent heat insulating panels 100A_1 and 100A_2.

[0094] According to the joining structure of the insulation panels 100_1, 100_2 according to one embodiment of the present invention, the metal plates 122, 124 are fixed by the fasteners 156, 158. This makes it possible to suppress deformation of the side plate portions 122c, 124c, 122e, 124e of the metal plates 122, 124 even in the event of a fire. Therefore, it is possible to prevent opening and deformation of the ends in the second direction D2, including the side plate portions 122c, 124c, 122e, 124e of the metal plates 122, 124 on the side where the fire has occurred.

[0095] Furthermore, in this embodiment, the non-combustible boards 142, 144, 146 contain moisture. Therefore, in the event of a fire, even if the heat is transferred to the non-combustible boards 142, 144, 146 at the joints 102b, 102c at the ends of the heat insulating panel 100 in the second direction D2, the moisture in the non-combustible boards 142, 144, 146 can be released to the periphery of the joints 102b, 102c. This suppresses a temperature rise at the joints 102b, 102c for a predetermined period of time, and prevents opening or deformation of the ends of the metal plates 122, 124 in the second direction D2, including the side plate portions 122c, 124c, 122e, 124e.

[0096] This prevents gaps caused by thermal deformation between the components of joints 102b, 102c, which would allow heat and flames to be transferred directly to the organic insulating material, causing the organic insulating material to burn and spread, as was the case with conventional methods. Alternatively, it prevents metal plates 122, 124 from deforming in an opening direction at joints 102b, 102c, for example, which would supply oxygen to the organic insulating material inside from the deformed areas, causing the organic insulating material to burn and spread. It also prevents fire accidents in insulation panel 100A that uses organic insulating material.

[0097] Furthermore, inorganic non-combustible materials 114, 116, 118 are provided on the indoor or indoor side of heat insulating panel 100A. As a result, in the event of a fire, opening or deformation in second direction D2, including the side panel portions of the metal plate, can be prevented, and the spread of fire to general portion 102a of heat insulating panel 100A can be prevented.

[0098] Furthermore, the heat insulating panel 100A according to one embodiment of the present invention is configured such that a non-combustible board 142 is fixed in advance at the joint 102b, and a non-combustible board 144 is fixed to the joint 102c. Therefore, at the construction site, it is only necessary to fit the non-combustible board 146 into the recess 104a of the heat insulating panel 100_1 and the non-combustible board 146 into the recess 104b of the adjacent heat insulating panel 100_2. Thereafter, the gap between the heat insulating panel 100_1 and the heat insulating panel 100_2 is filled with the sealants 110a and 110b. This allows the construction time at the construction site to be shortened.

[0099] Although one embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, a construction in which a person skilled in the art appropriately adds, deletes, or modifies components based on the insulation panel of this embodiment is also included in the scope of the present invention as long as it maintains the gist of the present invention. Furthermore, the above-described embodiments can be appropriately combined as long as there are no mutual contradictions, and technical matters common to each embodiment are included in each embodiment even if not explicitly stated.

[0100] Even if there are other effects and advantages different from those brought about by the aspects of each of the above-mentioned embodiments, those that are clear from the description in this specification or that can be easily predicted by a person skilled in the art are naturally understood to be brought about by the present invention. [Explanation of symbols]

[0101] 100, 100A: heat insulating panel, 102a: general part, 102b, 102c: joint part, 104a, 104b: recessed part, 110a, 110b: sealing material, 112: heat insulating material main body, 112a: first surface, 112b: second surface, 112c, 112d: side surface, 112e: protrusion, 112f: protrusion, 114, 116, 118: inorganic non-combustible material, 122: metal plate, 122a: main body plate part, 122b: end surface plate part, 122c: side surface plate part, 122d: end surface plate part, 122e: side surface plate part, 122f, 122g: bent part, 122h: notch part, 124: metal plate , 124a: main body plate portion, 124b: end plate portion, 124c: side plate portion, 124d: end plate portion, 124e: side plate portion, 124f, 124g: bent portion, 124h: cutout portion, 132, 134: reinforcing steel plate, 142, 144, 146: non-combustible board, 150: rod, 152: fixing device, 152a: middle portion, 152b, 152c: connecting portion, 152d, 152e: folded portion, 152f: through hole, 154: fixing device, 154a: middle portion, 154b, 154c: folded portion, 154d, 154e: end portion, 154f: through hole, 1000: heat insulating structure

Claims

1. a heat insulating material body having a first surface and a second surface opposite to the first surface; a first inorganic noncombustible material in contact with the first surface of the thermal insulation body; a first metal plate that covers the first inorganic noncombustible material and is bent so as to surround a first end surface of the first inorganic noncombustible material from the outside, forming a first side plate portion that is approximately parallel to the first surface, and a first bent portion whose tip is approximately parallel to the first end surface of the first inorganic noncombustible material; a second metal plate that covers the second surface side and is bent so as to surround the first end surface of the thermal insulation body from the outside, forming a second side panel portion that is approximately parallel to the second surface, and whose tip is bent so as to form a second bent portion that is approximately horizontal to the first end surface of the thermal insulation body; a fixture that fixes the first metal plate and the second metal plate and has an intermediate portion, a first folded portion connected to both ends of the intermediate portion, and a second folded portion; the first metal plate has a first notch portion provided inside a side end portion of the first bent portion, the second metal plate has a second notch portion provided inside a side end portion of the second bent portion, the first cutout portion and the second cutout portion face each other, An insulating panel, wherein the width of the first cutout portion and the width of the second cutout portion are longer than the length of the intermediate portion of the fastener in the extending direction.

2. 2. The insulating panel of claim 1, wherein the first bent portion is bent approximately perpendicularly toward the first surface side and approximately parallel to the first end surface of the first inorganic non-combustible material, and the second bent portion is bent approximately perpendicularly toward the second surface side and approximately parallel to the first end surface of the insulating material body.

3. An insulating panel as described in claim 1, wherein the first folded portion is sandwiched between the intermediate portion and the first folded portion, and the second folded portion is sandwiched between the intermediate portion and the second folded portion.

4. The heat insulating panel according to claim 3 , further comprising a first non-combustible board provided between the first side panel portion and the second side panel portion so as to contact the middle portion of the fastener.

5. 2. The insulating panel of claim 1, wherein the first bent portion is bent approximately perpendicularly toward the second surface side and approximately parallel to the first end surface of the first inorganic non-combustible material, and the second bent portion is bent approximately perpendicularly toward the first surface side and approximately parallel to the first end surface of the insulating material body.

6. An insulating panel as described in Claim 5, wherein the first folded portion and the second folded portion are provided between the first folded portion and the second folded portion at both ends of the intermediate portion.

7. The insulating panel according to claim 6, further comprising a first non-combustible board arranged between the first side panel portion and the second side panel portion so as to contact the first folded portion and the second folded portion.

8. A device having a plurality of the fixing devices, The insulating panel according to claim 1 , wherein the plurality of fasteners are provided at predetermined intervals in the first bent portion and the second bent portion.

9. The heat insulating panel according to claim 1 , further comprising a reinforcing steel plate provided between the first side panel portion and the first inorganic noncombustible material.

10. A joining structure for an insulating panel in which a plurality of insulating panels according to any one of claims 1 to 9 are arranged and joined in the width direction, A joining structure of insulating panels in which a third non-combustible board is provided so as to contact the first non-combustible board of one of the adjacent insulating panels and the second non-combustible board of the other insulating panel.

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