Panel joint structure and panel fixing structure

Abstract

To provide technology that can improve workability.SOLUTION: A one end joint plate portion 32 provided in a female joint portion 12 comprises a one end outer plate portion 321, a one end first bend portion 322, a one end inner plate portion 323, a one end second bend portion 324, a packing receiving plate portion 325, and a core material embedding portion 326. A one end groove portion 327 is formed in the one end inner plate portion 323. Meanwhile, an other end joint plate portion 33 provided in a male joint portion 13 comprises an other end stepped portion 331, an other end inner plate portion 332, and a packing pressing and bending portion 333. The other end joint plate portion 33 is formed in a first type in which the other end stepped portion 331 secures a first space S1 with respect to the one end first bend portion 322 of the female joint portion 12.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a panel joining structure and a panel fixing structure. [Background technology]

[0002] The following Patent Document 1 discloses a panel made by sandwiching a core material between two metal plates, a structure for joining these panels together, and a structure for fixing the joined panels to the furring strips of a building frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-82675 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technique, in order to fasten one of the adjacent panels to the furring strip, a pilot hole is first drilled so as to span the one panel and the furring strip. Next, the one panel is fastened to the furring strip by screwing a bolt into the pilot hole. Finally, the other panel is slid to complete the joining of the one panel to the other panel. In the conventional technology, by forming a pilot hole, it is possible to prevent the tip of the threaded portion from slipping (running away) on the surface of the metal plate when the bolt begins to be screwed in. However, since the work involved in forming the pilot hole is required, the structure has poor workability.

[0005] An object of the present invention is to provide a technique capable of improving workability. [Means for solving the problem]

[0006] In order to achieve the above object, a panel joint structure according to one aspect of the present invention comprises: The panel includes a core material having a predetermined thickness along a first direction, and a pair of metal plates attached to a first surface and a second surface of the core material, respectively; A female joint portion having a concave shape extending along a third direction perpendicular to the first direction is provided at one end of the panel along a second direction perpendicular to the first direction, The other end of the panel along the second direction is provided with a male joint portion having a convex shape extending along the third direction, A panel joining structure in which the panels are arranged adjacent to each other in the second direction and the female joint portion and the male joint portion to be joined are joined, The female joint portion is formed by forming one-end joint plate portions on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes a one-end outer plate portion continuing from the metal plate main body of each of the pair of metal plates, a one-end first bent portion continuing from the one-end outer plate portion, and a one-end inner plate portion continuing from the one-end first bent portion and located on a panel first inner side that is more inward along the first direction than the one-end outer plate portion, and a one-end groove portion is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is recessed toward a first outer side of the panel, which is an outer side along the first direction, and is formed in a groove shape extending along the third direction. It is characterized by:

[0007] In order to achieve the above object, a panel fixing structure according to one aspect of the present invention comprises: The panel includes a core material having a predetermined thickness along a first direction, and a pair of metal plates attached to a first surface and a second surface of the core material, respectively; A female joint portion having a concave shape extending along a third direction perpendicular to the first direction is provided at one end of the panel along a second direction perpendicular to the first direction, The other end of the panel along the second direction is provided with a male joint portion having a convex shape extending along the third direction, A panel fixing structure in which the panels are arranged adjacent to each other in the second direction and a panel joining structure is used to join the female joint portion and the male joint portion to be joined, thereby fixing the panel to a fixing object to form a panel fixing portion, The female joint portion is formed by forming one-end joint plate portions on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes a one-end outer plate portion continuing from the metal plate main body of each of the pair of metal plates, a one-end first bent portion continuing from the one-end outer plate portion, and a one-end inner plate portion continuing from the one-end first bent portion and located on a panel first inner side that is more inward along the first direction than the one-end outer plate portion, and a one-end groove portion is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is recessed toward a first outer side of the panel, which is an outer side along the first direction, and is formed in a groove shape extending along the third direction, The panel fixing portion is formed by screwing a first screw into the one end groove portion to fix the female joint portion to the fixing object. It is characterized by: Effect of the Invention

[0008] According to the present invention, it is possible to improve workability. [Brief description of the drawings]

[0009] [Figure 1] 1 is a diagram showing an example of a prefabricated refrigerator to which a panel joining structure and a panel fixing structure according to an embodiment of the present invention are applied, and an example of a building in which the prefabricated refrigerator is installed. [Diagram 2] 2 is an enlarged cross-sectional view showing an example of a panel fixing structure taken along a circle C in FIG. 1. [Diagram 3] 2A and 2B are cross-sectional views showing an example of the panel joining structure and the panel fixing structure of FIG. 1, where (a) is an explanatory view relating to the panel joining structure, and (b) is an explanatory view relating to the panel fixing structure. [Figure 4] 4 is an enlarged cross-sectional view of the panel joining structure and the panel fixing structure of FIG. 3. [Diagram 5]FIG. 1 is a perspective view showing an example of a state in which a plurality of ceiling panels are suspended. [Figure 6] 6A and 6B are diagrams showing an example of the panel joining structure and panel fixing structure of FIG. 5, in which (a) is an explanatory diagram relating to temporary fixing of one panel, and (b) is an explanatory diagram relating to joining of one panel to another panel. [Figure 7] FIG. 4 is an explanatory diagram of a concave shape and a convex shape. [Figure 8] 1 is a cross-sectional view showing a first example of a panel joining structure and a panel fixing structure. [Figure 9] 9 is an enlarged cross-sectional view of a first example of the panel joining structure and panel fixing structure of FIG. 8. [Figure 10] FIG. 4 is a cross-sectional view showing a second example of a panel joining structure and a panel fixing structure. [Figure 11] 11 is an enlarged cross-sectional view of a second example of the panel joining structure and panel fixing structure of FIG. 10. FIG. [Figure 12] 11A to 11C are diagrams showing a third example of a panel joining structure and a panel fixing structure. [Figure 13] 13 is an enlarged view of the panel joining structure and panel fixing structure of FIG. 12, which is a third example. [Figure 14] 1A and 1B are diagrams showing an example of a panel fixing structure, in which (a) is an explanatory diagram relating to temporary fixing, and (b) is an explanatory diagram relating to full fixing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] <For example, about a building with a prefabricated refrigerator> An example of a prefabricated refrigerator to which a panel joining structure and a panel fixing structure according to an embodiment of the present invention are applied and a building in which the prefabricated refrigerator is installed will be described. FIG. 1 is a diagram showing an example of a prefabricated refrigerator to which a panel joining structure and a panel fixing structure according to an embodiment of the present invention are applied, and an example of a building in which the prefabricated refrigerator is installed.

[0011] In the building 200, for example, a prefabricated refrigerator 201 is installed. The prefabricated refrigerator 201 is a prefabricated refrigerator. In this embodiment, the prefabricated refrigerator 201 is taken as an example, but is not limited thereto. That is, in addition to a commercial prefabricated refrigerated-freezer, the refrigerator may be used for a large refrigerated-freezer warehouse, an inner wall of a logistics center, an interior material of a data center, a clean room, or the like, or a base material of a shielded room or a soundproof room. In addition, since the present invention is characterized by the panel joining structure 100 (see Figures 3 and 4) and the panel fixing structure 150 (see Figure 2) described below, explanations of, for example, the refrigeration system and the doors for entering and exiting will be omitted.

[0012] The prefabricated refrigerator 201 includes a wall panel 1A forming a side wall and a ceiling panel 1B forming a ceiling. The wall panel 1A and the ceiling panel 1B are formed by joining a plurality of panels 1 described later. The wall panel 1A is fixed to furring strips 204 (see FIG. 2; C-shaped steel) attached to a frame 202 of the building 200. Meanwhile, the ceiling panel 1B is suspended by a hanging device 205 or the like attached to a frame 203 of the building 200. The fastening to the furring strips 204 and the fastening and suspension by the hanging device 205 or the like will be described later.

[0013] <Overview of Panel Fixing Structure 150> The panel fixing structure 150 will be outlined below using the wall panel 1A as an example. FIG. 2 is an enlarged cross-sectional view showing an example of the panel fixing structure 150 taken at the circle C in FIG. In Fig. 2, the horizontal arrow corresponds to the first direction T described in the claims. The vertical arrow perpendicular to the first direction T corresponds to the third direction L described in the claims. The direction perpendicular to the first direction T and the third direction L (the direction perpendicular to the paper surface of Fig. 2) corresponds to the second direction W described in the claims.

[0014] The wall panel 1A is formed by joining a plurality of panels 1 along the second direction W. Such wall panels 1A are fixed at the joining positions of the panels 1. In FIG. 2, a panel fixing portion 153 is formed by temporary fixing with a short first screw 151 and permanent fixing with a long second screw 152. The panel fixing portion 153 is formed by fixing the panel 1 to a fixing object. In this case, the fixing object is an L-shaped bracket 206 attached to a furring strip 204. Both the furring strip 204 and the bracket 206 are made of metal. It is to be noted that a fixing structure may be used in which the panel fixing portion 153 is formed by directly screwing the short first screw 151 and the long second screw 152 into the furring strip 204 without using the bracket 206 .

[0015] The lower part of the wall panel 1A is fixed to the floor 207 using a specified fastener (reference number omitted). The specified fastener is one that does not create a gap at the lower part of the wall panel 1A. Meanwhile, the upper part of the wall panel 1A is fixed to the ceiling panel 1B by metal fittings (not shown).

[0016] <Overview of the panel joining structure 100 and the panel fixing structure 150> Based on the overview of the panel fixing structure 150 described above, the overview of the panel joining structure 100 will also be described. Fig. 3 is a cross-sectional view showing an example of the panel joint structure and the panel fixing structure of Fig. 1, Fig. 3(a) is an explanatory view relating to the panel joint structure, Fig. 3(b) is an explanatory view relating to the panel fixing structure, and Fig. 4 is an enlarged cross-sectional view of the panel joint structure and the panel fixing structure of Fig. 3.

[0017] In Fig. 3, the panel 1 is provided with a female joint 12 at one end of the panel body 11 along the second direction W. The panel 1 is provided with a male joint 13 at the other end along the second direction W. The female joint 12 is formed so as to have a concave shape extending along the third direction L. The male joint 13 is also formed so as to have a convex shape extending along the third direction L. The concave and convex shapes will be described later. 3 and 4, when such panels 1 are arranged adjacent to each other in the second direction W and the female joint portion 12 and the male joint portion 13 to be joined are joined, first, one panel 1 is temporarily fixed to the bracket 206 using a short first screw 151. For the temporary fixing, the one-end groove portion 327 described later functions effectively. After one panel 1 is temporarily fixed to the bracket 206, the other panel 1 is slid along the second direction W (along the furring strip 204) to join the female joint portion 12 and the male joint portion 13 to be joined. When the female joint portion 12 and the male joint portion 13 are joined, the gasket 4 is sandwiched between them. Finally, the other panel 1 is finally fixed to the bracket 206 using the long second screw 152 to form a panel fixing part 153. The long second screw 152 is screwed in so as to penetrate the male joint part 13 of the other panel 1. The other end groove part 334 described later functions effectively in this final fixation. In this manner, the joining and fixing of the panels 1 to each other is completed.

[0018] <About the hanging state of ceiling panel 1B> The state in which the ceiling panel 1B is suspended by the suspension fixture 205 etc. will be described. FIG. 5 is a perspective view showing an example of a state in which a plurality of panels are suspended from a ceiling.

[0019] The hanging device 205 includes a hanging bolt 208, one end of which is attached to the frame 203 and whose length is adjustable, and a hooking fixture 209 provided on the other end of the hanging bolt 208. The hooking fixture 209 is used in a state in which it hooks a C-shaped steel 210, whereby the C-shaped steel 210 is suspended by the hanging device 205. A ceiling panel 1B is fixed to the C-shaped steel 210. In this embodiment, the ceiling panel 1B is also fixed using a fixing bracket 211 that is fixed with a rivet.

[0020] <Regarding joining and temporary fastening of panels 1 related to ceiling panel 1B> A method for temporarily fastening and joining the panel 1 to the C-shaped steel 210 will be described. 6A and 6B are diagrams showing an example of the panel joining structure and panel fixing structure of FIG. 5, where (a) is an explanatory diagram relating to temporary fixing of one panel, and (b) is an explanatory diagram relating to joining of one panel to another panel.

[0021] First, as shown in Fig. 6(a), one panel 1 is placed so that the bottom surface of the C-shaped steel 210 and the top surface of the panel 1 are in contact, and then the panel 1 is temporarily fixed at the female joint 12 using a short first screw 151. Specifically, the short first screw 151 is screwed from the inside to the outside of the recess of the concave female joint 12 to temporarily fix it to the C-shaped steel 210. The one end groove 327 described later functions effectively for the temporary fixation. The panel fixing part 154 is formed by the temporary fixation.

[0022] 6(b), the other panel 1 is slid along the underside of the C-shaped steel 210, and the convex male joint 13 of the other panel 1 is joined to the female joint 12. Specifically, the protruding portion of the convex male joint 13 is inserted into the recess of the concave female joint 12 to join the protrusions and recesses (a packing 4, described later, is sandwiched during joining). Although it is possible to use long second screws 152 as in the case of wall panel 1A (see FIG. 2) for permanent fixing, here fixing using fixing brackets 211 (see FIG. 5) is adopted.

[0023] <Concave and convex shapes> Before going into a detailed description, the "concave shape" and "convex shape" of the female joint portion 12 which is concave and the male joint portion 13 which is convex will be described. FIG. 7 is an explanatory diagram of the concave and convex shapes.

[0024] In this embodiment, the concave shape 14 is a shape in which the character "CONCAVE" is turned sideways to the right so that the concave portion (groove) of the character "CONCAVE" appears concave along the second direction W shown in Fig. 7. The concave shape 14 is also a shape in which the character "CONCAVE" extends along the third direction L. The concave shape 14 is configured to include a pair of concave side portions 14a and a concave bottom 14b. The pair of concave side portions 14a are referred to as "concave both sides" in the claims. On the other hand, the convex shape 15 is a shape in which the character "convex" is turned sideways to the left so that the protruding portion of the character "convex" appears to protrude along the second direction W. Also, the convex shape 15 is a shape in which the character "convex" extends along the third direction L. The convex shape 15 is configured to include a pair of convex side portions 15a and a tip 15b. Note that the pair of convex side portions 15a are referred to as "both convex side portions" in the claims.

[0025] The directions of the various arrows on the concave shape 14 and the convex shape 15 indicate "inward" and "outward." That is, the panel first inner side Pin1 indicates the inner side of the concave shape 14 and the convex shape 15 along the first direction T. Also, the panel first outer side Pout1 indicates the outer side of the concave shape 14 along the first direction T. Moreover, the panel second inward Pin2 indicates the inward side along the second direction W of the convex shape 15. Moreover, the panel second outward Pout2 indicates the outward side along the second direction W of the concave shape 14. A detailed explanation will be given below based on the above-mentioned concave shape 14, convex shape 15, "inner side" and "outer side".

[0026] <First Example of Panel Joint Structure 100 and Panel Fixing Structure 150> Fig. 8 is a cross-sectional view showing a first example of a panel joint structure and a panel fixing structure, and Fig. 9 is an enlarged cross-sectional view of the first example of the panel joint structure and the panel fixing structure of Fig. 8. 8 and 9, the above-mentioned short first screw 151 and long second screw 152 are omitted from the illustration.

[0027] [About the composition of Panel 1] In FIG. 8, the panel 1 includes a core material 2 and a pair of metal plates 3. The panel 1 has a thickness t of 70 mm along the first direction T (thickness t is an example). The core material 2 is made of, for example, urethane and has a predetermined thickness (about 74 mm here) along the first direction T. The pair of metal plates 3 are, for example, steel plates (Galvalume steel plate (registered trademark), stainless steel plate, etc.) with a thickness of just under 1 mm, and are attached to the first surface 2a and the second surface 2b of the core material 2, respectively. In other words, the pair of metal plates 3 are arranged so as to sandwich the core material 2. The steel plates are formed into a shape called a flat panel or a lining panel. The panel 1 has a thickness t along the first direction T of, for example, 40 mm minimum and 300 mm maximum, a width along the second direction W of, for example, 600 mm minimum and 1200 mm maximum, and a total length along the third direction L of, for example, 2000 mm minimum and 12000 mm maximum.

[0028] The present invention is characterized by a panel joining structure 100 in which panels 1 having the above-mentioned configuration are arranged adjacent to each other in the second direction W to join the female joint portion 12 and the male joint portion 13 to be joined. In addition, the present invention is characterized by a panel fixing structure 150 using a short first screw 151 and a long second screw 152, which are not shown here. In the present invention, a packing 4 is used in the panel joint structure 100. The packing 4 is disposed at a predetermined position (the positioning will be described later). The present invention is also characterized by a seal structure other than the packing 4.

[0029] [Regarding female joint 12] 8, 9, and 7, the female joint 12 is provided at one end of the panel 1 along the second direction W. The female joint 12 is formed such that a concave shape 14 extends along the third direction L. The female joint portion 12 has one-end joint plate portions 32 formed at the positions of a pair of concave side portions 14a in the concave shape 14. The one-end joint plate portions 32 are portions formed at one end of each of the pair of metal plates 3, and the insides of the one-end joint plate portions 32 are filled with the above-mentioned urethane.

[0030] The one-end joining plate portion 32 includes an one-end outer plate portion 321 that is continuous with the metal plate main body 31 of a pair of metal plates 3, a one-end first bending portion 322 that is continuous with the one-end outer plate portion 321, an one-end inner plate portion 323 that is continuous with the one-end first bending portion 322 and is located at the panel first inward Pin1 than the one-end outer plate portion 321, a one-end second bending portion 324 that is continuous with the one-end inner plate portion 323, a gasket receiving plate portion 325 that is continuous with the one-end second bending portion 324 and is located further on the panel first inward Pin1 than the one-end inner plate portion 323, and a core material embedded portion 326 that is continuous with the gasket receiving plate portion 325 and is embedded in the core material 2.

[0031] The one end outer plate portion 321 is formed as a flat plate that is flush with the metal plate body 31. The one end first bent portion 322 is formed by bending toward the panel first inward Pin1. The one end first bent portion 322 is formed into a bent shape with a radius of 2.5 mm, for example. The one end inner plate portion 323 is formed as a flat plate inclined such that the angle between the one end first bent portion 322 and the one end outer plate portion 321 is, for example, 4 degrees (the angle is an example). The one end inner plate portion 323 is formed with a one end groove portion 327.

[0032] The one-end groove 327 is disposed in the vicinity of the one-end second bent portion 324 away from the one-end first bent portion 322. The one-end groove 327 is formed in a groove shape that is recessed toward the panel first outer side Pout1 and extends along the third direction L. The one-end groove 327 is formed in a shape such that the groove bottom describes an arc. The one-end groove 327 is formed in order to suppress slippage (escape) of the tip of the threaded portion of the short first screw 151. The one end groove portion 327 is formed with a groove width and depth such that when the short first screw 151 is screwed in, the screw head (the head of a so-called round screw) does not protrude from the one end inner plate portion 323 or protrudes slightly. If slippage (escape) of the threaded tip of the short first screw 151 can be prevented in the one-end groove 327 during the temporary fastening described above, it goes without saying that workability can be improved. The one-end groove portion 327 is formed at the same time as the one-end first bent portion 322, the one-end second bent portion 324, and the core material embedded portion 326 are formed by bending.

[0033] One end second bent portion 324 is a bent portion that positions packing receiving plate portion 325 perpendicular to metal plate main body 31 with a gap therebetween. Packing receiving plate portion 325 is formed as a flat plate that can receive approximately half of the width of packing 4. Core material embedded portion 326 is formed by bending an end portion of packing receiving plate portion 325 a short distance. Core material embedded portion 326 is formed so as to be embedded in core material one end 22.

[0034] The female joint portion 12 has a first seal portion 221 provided at the position of the recessed bottom 14b of the recessed shape 14. This first seal portion 221 is provided in a part (center portion) of the core material one end 22 of the core material 2. The core material one end 22 is one end of the core material 2 along the second direction W, which is continuous with the core material body 21. The first seal portion 221 is formed in a shape that protrudes in an arc shape toward the panel second outer side Pout2. Specifically, it is formed in a substantially semicylindrical shape. The first seal portion 221 is formed in a seal portion in which the entire curved surface is in close contact with the second seal portion 231 described below and which does not allow gas or liquid to pass through easily. Also, it is formed in a portion that is in sliding contact with the second seal portion 231. The first seal portion 221 is not limited to a kamaboko shape (semi-cylindrical shape). That is, the shape of the first seal portion 221 may be replaced with a shape of the second seal portion 231 described later. At a position on the panel first outer side Pout1 of the first seal portion 221 at the core one end 22, a flat surface capable of receiving approximately the remaining half of the packing 4 in the width direction is formed.

[0035] [Regarding male joint 13] 8, 9, and 7, the male joint 13 is provided at the other end of the panel 1 along the second direction W. The male joint 13 is formed such that a convex shape 15 extends along the third direction L. In the male joint portion 13, an other-end joint plate portion 33 is formed at the position of a pair of convex side portions 15a in the convex shape 15. The other-end joint plate portion 33 is a portion formed at each other end of the pair of metal plates 3, and the inside is filled with the above-mentioned urethane.

[0036] The other end joining plate portion 33 is composed of an other end step portion 331 that is continuous with the metal plate main body 31 and has a stepped shape on the panel first inner Pin1, an other end inner plate portion 332 that is continuous with this other end step portion 331, and a gasket pressing bend portion 333 that is continuous with the other end inner plate portion 332.

[0037] The other end step portion 331 is formed in a substantially crank shape. The other end joint plate portion 33 in Fig. 8 and Fig. 9 is formed in a first type in which the other end step portion 331 secures a predetermined first distance S1 (here, 10 mm) with respect to the one end first bent portion 322 of the female joint portion 12 (a second type different from this first type will be described later with reference to Figs. 10 and 11). The other end inner plate portion 332 is formed as a flat plate with an angle of, for example, 4 degrees between the surface of the metal plate body 31 that is extended and the other end step portion 331 (the angle is an example). The other end inner plate portion 332 is formed to have a tapered surface that comes into surface contact with the one end inner plate portion 323 of the female joint portion 12 (a drawing showing the tapered surfaces of the one end inner plate portion 323 and the other end inner plate portion 332 in surface contact with each other is omitted). The other end inner plate portion 332 has an other end groove portion 334 formed therein.

[0038] The other end groove 334 is disposed within the range of the first interval S1 in the other end inner plate portion 332, and is formed in a shape recessed toward the panel first inward Pin1, and is formed in a groove shape extending along the third direction L. The other end groove 334 is formed together with the one end groove 327 of the female joint portion 12 during bending of the other end step portion 331 and the packing pressing bent portion 333, similar to the one end groove 327. The other end groove 334 is formed in a shape such that the groove bottom describes an arc, similar to the one end groove 327. The other end groove 334 is formed to suppress slippage (escape) of the tip of the threaded portion of the long second screw 152. The other end groove portion 334 is formed with a groove width and depth such that when the long second screw 152 is screwed in, the screw head (the head of a so-called countersunk screw) does not protrude from the other end inner plate portion 332 or protrudes slightly. Needless to say, if slippage (escape) of the tip of the threaded portion of the long second screw 152 is suppressed in the other-end groove portion 334 during the above-mentioned main fixing, the workability can be improved.

[0039] The packing pressing bent portion 333 is formed so as to be able to pinch and press the packing 4 between itself and the packing receiving plate portion 325 of the female joint portion 12. The packing pressing bent portion 333 is formed into a bent shape with a radius of 3 mm, for example. The packing pressing bent portion 333 is formed so as to be partially embedded in the core material 2 (embedded in the other end 23 of the core material).

[0040] The male joint portion 13 has a second seal portion 231 provided at the position of the tip 15b of the convex shape 15. This second seal portion 231 is provided in a part (center portion) of the other end 23 of the core material 2. The other end 23 of the core material is the other end along the second direction W of the core material 2 that is continuous with the core material body 21. The second seal portion 231 is formed in a portion recessed in an arc shape on the panel second inner Pin 2. Specifically, it is formed in a shape having a curved surface that matches the substantially semicylindrical (semi-cylindrical) first seal portion 221 in the female joint portion 12. The second seal portion 231 is formed in a seal portion in which the entire curved surface is in close contact with the first seal portion 221 and which makes it difficult for gas or liquid to pass through. The second seal portion 231 may have a shape interchangeable with that of the first seal portion 221. At a position on the panel first outer side Pout1 of the second seal portion 231 at the other end 23 of the core material, a flat surface capable of receiving approximately the remaining half of the packing 4 in the width direction is formed.

[0041] [About packing 4] The packing 4 is an elastic sealing member having a rectangular cross-sectional shape and extending along the third direction L. The packing 4 employed here has a thickness (length along the second direction W) of, for example, 5 mm and a width (length along the first direction T) of, for example, 15 mm. The packing 4 is disposed at a position toward the first outer side Pout1 of the panels relative to the first seal portion 221 and the second seal portion 231, and therefore two packings 4 are used for each joining portion between the panels 1. In addition, once the joining of the panels 1 is completed, the gasket 4 is crushed from the aforementioned thickness of 5 mm to 3 mm (the double-dashed line shows the shape before being crushed).

[0042] <Effects of the first example> As can be seen from the first example of the panel joint structure 100 and the panel fixing structure 150, the one end groove 327 is formed in the female joint portion 12, and the other end groove 334 is formed in the male joint portion 13, so that these grooves can suppress slippage (escape) of the tip of the screw portion. This allows temporary fixing with the short first screw 151 and final fixing with the long second screw 152 to be performed smoothly. This has the effect of improving workability. Furthermore, with regard to the core material 2, the first seal portion 221 is formed in a shape that protrudes in an arc shape, and the second seal portion 231 is formed in a portion that is recessed in an arc shape, so that even if the axis of one panel 1 along the second direction W is slightly inclined relative to the axis of the other panel 1 along the second direction W when the panels 1 are joined together, the curved surfaces of the first seal portion 221 and the second seal portion 231 come into contact with each other, and by moving the other panel 1 so that the aforementioned axes are coaxial, the aforementioned curved surfaces come into sliding contact with each other, and as a result, the joining of the panels 1 can be completed. This has the effect of improving workability. In addition, the first seal portion can be secured by contact between the first seal portion 221 and the second seal portion 231, and further, the second and third seal portions can be secured by crushing the two packings 4. Therefore, there is also an effect that a panel joining structure 100 and a panel fixing structure 150 with high airtightness and watertightness can be realized.

[0043] <Second Example of the Panel Joint Structure 100 and the Panel Fixing Structure 150> Fig. 10 is a cross-sectional view showing a second example of the panel joint structure and the panel fixing structure, and Fig. 11 is an enlarged cross-sectional view of the second example of the panel joint structure and the panel fixing structure of Fig. 10. As in the first example, the short first screws 151 and the long second screws 152 are also omitted from FIGS.

[0044] The second example is suitable for application to, for example, a ceiling panel 1B, and differs from the first example in that the other end joint plate portion 33 of the male joint portion 13 is formed in the second type described below, and in that the first seal portion 221 and the second seal portion 231 of the core material 2 are formed into a curved surface that is steeper than that of the first example.

[0045] [Regarding female joint 12] 10, 11, and 7, the female joint 12 is provided at one end of the panel 1 along the second direction W. The female joint 12 is formed such that a concave shape 14 extends along the third direction L. The female joint portion 12 has one-end joint plate portions 32 formed at the positions of a pair of concave side portions 14a in the concave shape 14. The one-end joint plate portions 32 are portions formed at one end of each of the pair of metal plates 3, and the insides of the one-end joint plate portions 32 are filled with the above-mentioned urethane.

[0046] The one-end joining plate portion 32 includes a one-end outer plate portion 321, a one-end first bent portion 322, a one-end inner plate portion 323, a one-end second bent portion 324, a packing receiving plate portion 325, and a core material embedded portion 326. The one-end inner plate portion 323 is formed with a one-end groove portion 327.

[0047] The female joint 12 has a first seal portion 221 at the position of the recessed bottom 14b of the recessed shape 14. This first seal portion 221 is provided in a part (center portion) of the core material one end 22 of the core material 2. The first seal portion 221 is formed in a shape that protrudes in an arc shape toward the panel second outer side Pout2. Specifically, it is formed in a substantially semi-cylindrical shape with a smaller radius of curvature than the first example.

[0048] [Regarding male joint 13] 10, 11, and 7, the male joint 13 is provided at the other end of the panel 1 along the second direction W. The male joint 13 is formed such that a convex shape 15 extends along the third direction L. In the male joint portion 13, an other-end joint plate portion 33 is formed at the position of a pair of convex side portions 15a in the convex shape 15. The other-end joint plate portion 33 is a portion formed at each other end of the pair of metal plates 3, and the inside is filled with the above-mentioned urethane.

[0049] The other end joint plate portion 33 includes an other end step portion 331, an other end inner plate portion 332, and a packing pressing bent portion 333. The other end joint plate portion 33 of the second example is formed as a second type in which the other end step portion 331 secures a second interval S2 (here, 3 mm) narrower than the above-mentioned first interval S1 (here, 10 mm) with respect to the one end first bent portion 322 of the female joint portion 12. Moreover, in the other end joint plate portion 33 of the second example, the other end inner plate portion 332 is formed in a shape without a recess (the other end groove portion 334 as described above is not formed).

[0050] The male joint 13 has a second seal portion 231 at the position of the tip 15b of the convex shape 15. This second seal portion 231 is provided in a part (center portion) of the other end 23 of the core material 2. The second seal portion 231 is formed in a portion recessed in an arc shape on the panel second inner Pin2. Specifically, it is formed in a shape having a curved surface that matches the substantially semi-cylindrical (substantially semi-cylindrical) first seal portion 221 in the female joint 12 of the second example.

[0051] <Effects of the second example> As can be seen from the second example of the panel joint structure 100 and the panel fixing structure 150, the one-end groove 327 is formed in the female joint portion 12, and this one-end groove 327 can suppress slippage (escape) of the tip of the screw portion. This allows the short first screw 151 to be temporarily fastened smoothly. This has the effect of improving workability. As in the first example, the first seal portion 221 of the core material 2 is formed in a shape that protrudes in an arc shape, and the second seal portion 231 is formed in a portion that is recessed in an arc shape, so that even if the axis of one panel 1 along the second direction W is slightly inclined relative to the axis of the other panel 1 along the second direction W when the panels 1 are joined together, the curved surfaces of the first seal portion 221 and the second seal portion 231 come into contact with each other, and by moving the other panel 1 so that the aforementioned axes are coaxial, the aforementioned curved surfaces come into sliding contact with each other, and as a result, the joining of the panels 1 can be completed. This has the effect of improving workability. In addition, the first seal portion can be secured by contact between the first seal portion 221 and the second seal portion 231, and further, the second and third seal portions can be secured by crushing the two packings 4. Therefore, there is also an effect that a panel joining structure 100 and a panel fixing structure 150 with high airtightness and watertightness can be realized.

[0052] <Third Example of the Panel Joint Structure 100 and the Panel Fixing Structure 150> Fig. 12 is a cross-sectional view showing a third example of a panel joint structure and a panel fixing structure, and Fig. 13 is an enlarged cross-sectional view of the panel joint structure and the panel fixing structure of Fig. 12, which is the third example. As in the first and second examples, the short first screws 151 and the long second screws 152 are also omitted from illustration in FIGS.

[0053] The third example differs from the first example in that the first seal portion 221 and the second seal portion 231 of the core material 2 are formed into a more gently curved surface than in the first example, and in that the thickness t of the panel 1 is t = 150 mm.

[0054] [Regarding female joint 12] 12, 13, and 7, the female joint 12 is provided at one end of the panel 1 along the second direction W. The female joint 12 is formed such that a concave shape 14 extends along the third direction L. The female joint portion 12 has one-end joint plate portions 32 formed at the positions of a pair of concave side portions 14a in the concave shape 14. The one-end joint plate portions 32 are portions formed at one end of each of the pair of metal plates 3, and the insides of the one-end joint plate portions 32 are filled with the above-mentioned urethane.

[0055] The one-end joining plate portion 32 includes a one-end outer plate portion 321, a one-end first bent portion 322, a one-end inner plate portion 323, a one-end second bent portion 324, a packing receiving plate portion 325, and a core material embedded portion 326. The one-end inner plate portion 323 is formed with a one-end groove portion 327.

[0056] The female joint 12 has a first seal portion 221 at the position of the recessed bottom 14b of the recessed shape 14. This first seal portion 221 is provided in a part (center portion) of the core material one end 22 of the core material 2. The first seal portion 221 is formed in a shape that protrudes in an arc toward the panel second outer side Pout2. Specifically, it is formed in a shape having an arc with a larger radius of curvature than the first example.

[0057] [Regarding male joint 13] 12, 13, and 7, the male joint 13 is provided at the other end of the panel 1 along the second direction W. The male joint 13 is formed such that a convex shape 15 extends along the third direction L. In the male joint portion 13, an other-end joint plate portion 33 is formed at the position of a pair of convex side portions 15a in the convex shape 15. The other-end joint plate portion 33 is a portion formed at each other end of the pair of metal plates 3, and the inside is filled with the above-mentioned urethane.

[0058] The other end joint plate portion 33 includes an other end step portion 331, an other end inner plate portion 332, and a packing pressing bent portion 333. The other end joint plate portion 33 of the second example is formed of a first type in which the other end step portion 331 ensures the above-mentioned first gap S1 (here, 10 mm) with respect to the one end first bent portion 322 of the female joint portion 12. The other end joint plate portion 33 is formed with an other end groove portion 334.

[0059] The male joint 13 has a second seal portion 231 at the position of the tip 15b of the convex shape 15. This second seal portion 231 is provided in a part (center portion) of the other end 23 of the core material 2. The second seal portion 231 is formed in a portion recessed in an arc shape on the panel second inner Pin2. Specifically, it is formed in a shape having a curved surface that matches the arc-shaped first seal portion 221 in the female joint 12 of the third example.

[0060] <Effects of the third example> As can be seen from the third example of the panel joint structure 100 and the panel fixing structure 150, one end groove 327 is formed in the female joint portion 12, and the other end groove 334 is formed in the male joint portion 13, so that these grooves can suppress slippage (escape) of the screw tip. This allows temporary fixing with the short first screw 151 and final fixing with the long second screw 152 to be performed smoothly. This has the effect of improving workability. As in the first example, the first seal portion 221 of the core material 2 is formed in a shape that protrudes in an arc shape, and the second seal portion 231 is formed in a portion that is recessed in an arc shape, so that even if the axis of one panel 1 along the second direction W is slightly inclined relative to the axis of the other panel 1 along the second direction W when the panels 1 are joined together, the curved surfaces of the first seal portion 221 and the second seal portion 231 come into contact with each other, and by moving the other panel 1 so that the aforementioned axes are coaxial, the aforementioned curved surfaces come into sliding contact with each other, and as a result, the joining of the panels 1 can be completed. This has the effect of improving workability. In addition, the first seal portion can be secured by contact between the first seal portion 221 and the second seal portion 231, and further, the second and third seal portions can be secured by crushing the two packings 4. Therefore, there is also an effect that a panel joining structure 100 and a panel fixing structure 150 with high airtightness and watertightness can be realized.

[0061] <About temporary fastening and permanent fastening> FIG. 14 is a diagram showing an example of a panel fixing structure, where (a) is an explanatory diagram relating to temporary fixing, and (b) is an explanatory diagram relating to full fixing.

[0062] As shown in Fig. 14(a), a short first screw 151 can be screwed into one end groove 327 (the one end groove 327 closer to the object) of the female joint 12 to temporarily fasten the panel to the object. After the panels 1 are joined together, as shown in Fig. 14(b), a long second screw 152 can be screwed into the other end groove 334 (the other end groove 334 farther from the object) of the male joint 13 to permanently fasten the panel to the object. The panel fixing portion 153 shown in Fig. 2, for example, is formed on the object to be fixed.

[0063] <Summary> As described above with reference to Figs. 1 to 14, by employing the panel joining structure 100 and the panel fixing structure 150 described above, it is possible to achieve the effect of improving workability.

[0064] Although one embodiment and other embodiments have been described, the present invention is not limited thereto. Furthermore, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments.

[0065] In the above-described embodiment, the protruding portion of the male joint portion 13, which has a convex shape, is inserted into the recess of the female joint portion 12, which has a concave shape, to join the recesses. However, the present invention is not limited to this structure, and may have an interlocking structure, for example, in which locking portions are provided on the concave and convex shapes, and the locking portions hook onto each other when inserted.

[0066] Although not specifically shown in the above embodiment, a sealant is filled in a predetermined gap between the first bent portion 322 at one end of the female joint 12 and the step portion 331 at the other end of the male joint 13.

[0067] The panel joint structure to which the present invention is applied is sufficient if it has the following configuration, and can take a variety of different embodiments. That is, (1) a panel joint structure to which the present invention is applied (for example, the panel joint structure 100 in FIG. 8 and FIG. 9 ) is A panel (e.g., panel 1 in FIGS. 8 and 9 ) is configured including a core material (e.g., core material 2 in FIGS. 8 and 9 ) having a predetermined thickness along a first direction (e.g., first direction T in FIGS. 8 and 9 ) and a pair of metal plates (e.g., metal plates 3 in FIGS. 8 and 9 ) attached to a first surface and a second surface of the core material, respectively; At one end of the panel along a second direction (e.g., second direction W in FIGS. 8 and 9) perpendicular to the first direction, a female joint (e.g., female joint 12 in FIGS. 8 and 9) is provided in which a concave shape (e.g., concave shape 14 in FIG. 7) extends along a third direction (e.g., third direction L in FIGS. 8 and 9) perpendicular to the first direction and the second direction; The other end of the panel along the second direction is provided with a male joint (e.g., male joint 13 in FIGS. 8 and 9 ) having a convex shape (e.g., convex shape 15 in FIG. 7 ) extending along the third direction; A panel joining structure in which the panels are arranged adjacent to each other in the second direction and the female joint portion and the male joint portion to be joined are joined, The female joint portion is formed by forming one-end joint plate portions (for example, one-end joint plate portions 32 in FIG. 9 ) on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes one-end outer plate portions (e.g., one-end outer plate portion 321 in FIG. 9 ) continuing from the metal plate main bodies (e.g., metal plate main bodies 31 in FIG. 9 ) of the pair of metal plates, one-end first bent portions (e.g., one-end first bent portion 322 in FIG. 9 ) continuing from the one-end outer plate portions, and one-end inner plate portions (e.g., one-end inner plate portion 323 in FIG. 9 ) continuing from the one-end first bent portion and located on a panel first inner side (e.g., panel first inner side Pin1 in FIG. 7 ) that is more inward along the first direction than the one-end outer plate portions, and a one-end groove portion (e.g., one-end groove portion 327 in FIGS. 8 and 9 ) is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is characterized in that it is recessed toward a first outer side of the panel (for example, the first outer side of the panel Pout1 in Figure 7), which is the outer side along the first direction, and is formed in a groove shape extending along the third direction.

[0068] According to the present invention, since the one-end groove is formed in the female joint, when temporarily fastening a panel with a screw, for example, by inserting the tip of the screw into the one-end groove and screwing it in, the one-end groove can prevent the tip of the screw from slipping (running away). This allows the aforementioned temporary fastening with the screw to be performed smoothly. This has the effect of improving workability.

[0069] In addition, (2) the panel joint structure to which the present invention is applied is the panel joint structure of (1), The male joint portion to be joined to the female joint portion has other end joint plate portions (e.g., other end joint plate portions 33 in FIGS. 8 and 9 ) formed on the pair of metal plates at both sides of the convex shape, The other end joining plate portion is characterized in that it is composed of an other end step portion (e.g., the other end step portion 331 in Figure 9) that is continuous with the metal plate main body and has a step shape toward the first inward side of the panel, and an other end inner plate portion (e.g., the other end inner plate portion 332 in Figure 9) that is continuous with the other end step portion, and that the other end step portion is formed of either a first type that ensures a predetermined first distance (e.g., the first distance S1 in Figures 8 and 9) from the one end first bending portion of the female joint portion, or a second type that ensures a second distance narrower than the first distance (e.g., the second distance S2 in Figures 10 and 11).

[0070] According to the present invention, it is possible to provide two types of male joints: a first type male joint in which the other end step portion of the male joint secures a predetermined first distance with respect to the one end first bent portion of the female joint, and a second type male joint in which a second distance narrower than the first distance is secured. This allows the user to select whether or not to use a screw to fasten the male joint. For example, with the first type male joint, the predetermined first distance is secured and the other end groove portion described below can be formed, so that the male joint can be smoothly fastened using a screw in the other end groove portion. This has the effect of contributing to improved workability.

[0071] In addition, (3) the panel joint structure to which the present invention is applied is the panel joint structure of (2), When the other end joining plate portion is formed in the first type, the other end inner plate portion of the first type is formed with an other end groove portion (for example, the other end groove portion 334 in FIGS. 8 and 9 ), The other end groove portion is formed in a groove shape that is recessed within the first interval toward the first inner side of the panel and extends along the third direction.

[0072] According to the present invention, the male joint also has an other-end groove similar to the one-end groove of the female joint, so that when a panel is to be fixed with a screw, for example, the screw tip is inserted into the other-end groove and screwed in, and the other-end groove prevents the screw tip from slipping (running away). This allows the screw to be fixed smoothly. This has the effect of improving workability.

[0073] In addition, (4) the panel joint structure to which the present invention is applied is the panel joint structure of (1), The female joint is formed, at a concave bottom position of the concave shape, with either a first seal portion (e.g., first seal portion 221 in FIGS. 8 and 9 ) protruding in an arc shape toward the second panel outer side (e.g., panel second outer side Pout2 in FIG. 7 ), which is the outer side along the second direction, at a part of one end of the core material (e.g., core material one end 22 in FIG. 8 and FIG. 9 ) of the core material along the second direction, or a second seal portion (e.g., second seal portion 231 in FIG. 8 and FIG. 9 ) recessed in an arc shape toward the second panel inner side (e.g., panel second inner side Pin2 in FIG. 7 ), which is the inner side along the second direction, The male joint portion, which is a joining partner of the female joint portion, is characterized in that the other of the first seal portion and the second seal portion is formed in a part of the other end of the core material (e.g., the other end 23 of the core material in Figures 8 and 9) along the second direction at the tip position of the convex shape.

[0074] According to the present invention, the core material has a first seal portion formed in a shape that protrudes in an arc shape, and a second seal portion formed in a portion that is recessed in an arc shape, so that even if the axis of one panel along the second direction is slightly inclined relative to the axis of the other panel along the second direction when the panels are joined together, the curved surfaces of the first seal portion and the second seal portion come into contact with each other, and by moving the other panel so that the aforementioned axes are coaxial, the aforementioned curved surfaces come into sliding contact with each other, and as a result, the joining of the panels can be completed. This has the effect of improving workability. Furthermore, according to the present invention, the contact between the first seal portion and the second seal portion ensures a seal portion at the core material, which contributes to the realization of a panel joining structure with high airtightness and watertightness and a panel fixing structure described later.

[0075] In addition, (5) the panel joint structure to which the present invention is applied is the panel joint structure of (4), A gasket (e.g., gasket 4 in Figures 8 and 9) is provided between the female joint portion and the male joint portion to be joined, and at a position first outside the panel than the first seal portion and the second seal portion.

[0076] According to the present invention, since the packing is provided at a position on the first outer side of the panel from the first seal portion and the second seal portion of the core material, the packing is crushed during joining, and it is possible to secure the second and third seal portions in addition to the core material. Therefore, it is possible to contribute to the realization of a panel joining structure with high airtightness and watertightness and a panel fixing structure described later.

[0077] (6) The panel fixing structure to which the present invention is applied is The panel includes a core material having a predetermined thickness along a first direction, and a pair of metal plates attached to a first surface and a second surface of the core material, respectively; A female joint portion having a concave shape extending along a third direction perpendicular to the first direction is provided at one end of the panel along a second direction perpendicular to the first direction, The other end of the panel along the second direction is provided with a male joint portion having a convex shape extending along the third direction, A panel fixing structure (e.g., the panel fixing structure 150 in FIG. 4 ) is a panel fixing structure that fixes the panel to a fixing object and forms a panel fixing portion (e.g., the panel fixing portion 153 in FIG. 4 ) by using a panel joining structure that joins the female joint portion and the male joint portion that are to be joined by arranging the panels next to each other in the second direction, The female joint portion is formed by forming one-end joint plate portions on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes a one-end outer plate portion continuing from the metal plate main body of each of the pair of metal plates, a one-end first bent portion continuing from the one-end outer plate portion, and a one-end inner plate portion continuing from the one-end first bent portion and located on a panel first inner side that is more inward along the first direction than the one-end outer plate portion, and a one-end groove portion is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is recessed toward a first outer side of the panel, which is an outer side along the first direction, and is formed in a groove shape extending along the third direction, The panel fixing portion is characterized in that it is formed by screwing a first screw into the one end groove portion to fix the female joint portion to the fixing object.

[0078] According to the present invention, since the one-end groove is formed in the female joint, when a panel is to be temporarily fastened with a first screw (a screw), if the tip of the threaded portion of the first screw is inserted into the one-end groove and screwed in, the one-end groove can suppress slippage (escape) of the tip of the threaded portion. This allows the above-mentioned temporary fastening with the first screw to be performed smoothly. This has the effect of improving workability.

[0079] In addition, (7) the panel fixing structure to which the present invention is applied is the panel fixing structure of (6), The male joint portion, which is a joint partner of the female joint portion, has other end joint plate portions formed on the pair of metal plates at both sides of the convex shape, the other end joining plate portion includes an other end step portion that is continuous with the metal plate body and has a step shape toward the first inner side of the panel, and an other end inner plate portion that is continuous with the other end step portion, and the other end step portion is formed so as to secure a predetermined first distance with respect to the one end first bent portion of the female joint portion, The other end inner plate portion is formed with an other end groove portion, The other end groove portion is formed in a groove shape that is recessed within the range of the first interval toward the first inner side of the panel and extends along the third direction, The panel fixing portion is further characterized in that it is formed by screwing a second screw into the other end groove portion to fix the male joint portion to the fixing object.

[0080] According to the present invention, the male joint also has an other-end groove similar to the one-end groove of the female joint, so that when a panel is to be fixed with a second screw, for example, the tip of the second screw is inserted into the other-end groove and screwed in, and the other-end groove prevents the tip of the screw from slipping (running away). This allows the above-mentioned fixing with the second screw to be performed smoothly. This has the effect of improving workability. [Explanation of symbols]

[0081] 1 Panel, 1A Wall panel, 1B Ceiling panel, 11 Panel body, 12 Female joint, 13 Male joint 14...concave shape, 14a...concave side portion, 14b...concave bottom, 15...convex shape, 15a...convex side portion, 15b...tip 2 core material, 2a first surface, 2b second surface, 21 core material body, 22 one end of core material, 23 other end of core material 3 metal plate, 31 metal plate body, 32 one end joint plate portion, 33 other end joint plate portion 321...One end outer plate portion, 322...One end first bent portion, 323...One end inner plate portion, 324...One end second bent portion, 325...Packing receiving plate portion, 326...Core material buried portion, 327...One end groove portion 331... other end step portion, 332... other end inner plate portion, 333... packing pressing bend portion, 334... other end groove portion 4.... Packing, 100... Panel joining structure, 150... Panel fixing structure, 151... Short first screw (first screw), 152... Long second screw (second screw), 153... Panel fixing portion, 154... Panel fixing portion 200...building, 201...prefabricated refrigerator, 202, 203...body, 204...furring strip, 205...hanging device, 206...bracket, 207...floor, 208...hanging bolt, 209...hanging fixture, 210...C-shaped steel, 211...fixing bracket T: 1st direction, W: 2nd direction, L: 3rd direction, Pin1: 1st panel inner side, Pout1: 1st panel outer side, Pin2: 2nd panel inner side, Pout2: 2nd panel outer side

Claims

1. The panel includes a core material having a predetermined thickness along a first direction, and a pair of metal plates attached to a first surface and a second surface of the core material, respectively; A female joint portion having a concave shape extending along a third direction perpendicular to the first direction is provided at one end of the panel along a second direction perpendicular to the first direction, The other end of the panel along the second direction is provided with a male joint portion having a convex shape extending along the third direction, A panel joining structure in which the panels are arranged adjacent to each other in the second direction and the female joint portion and the male joint portion to be joined are joined, The female joint portion is formed by forming one-end joint plate portions on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes a one-end outer plate portion continuing from the metal plate main body of each of the pair of metal plates, a one-end first bent portion continuing from the one-end outer plate portion, and a one-end inner plate portion continuing from the one-end first bent portion and positioned on a first inner side of the panel that is more inward in the first direction than the one-end outer plate portion, and a one-end groove portion is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is recessed toward a first outer side of the panel, which is an outer side along the first direction, and is formed in a groove shape extending along the third direction. Panel joint structure.

2. The male joint portion, which is a joint partner of the female joint portion, has other end joint plate portions formed on the pair of metal plates at both sides of the convex shape, the other end joining plate portion includes an other end step portion that is continuous with the metal plate body and has a step shape toward the first inner side of the panel, and an other end inner plate portion that is continuous with the other end step portion, and the other end step portion is formed in either one of a first type that ensures a predetermined first gap with respect to the one end first bent portion of the female joint portion, and a second type that ensures a second gap narrower than the first gap; The panel joint structure according to claim 1.

3. When the other end joining plate portion is formed of the first type, the other end inner plate portion of the first type is formed with an other end groove portion, The other end groove portion is formed in a groove shape recessed within the range of the first interval toward the first inward side of the panel and extending along the third direction. The panel joint structure according to claim 2.

4. The female joint is formed, at a concave bottom position of the concave shape, with either a first seal portion that protrudes in an arc shape toward the second outer side of the panel, which is the outer side along the second direction, or a second seal portion that is recessed in an arc shape toward the second inner side of the panel, which is the inner side along the second direction, at a part of one end of the core material along the second direction; The male joint portion, which is a joint partner of the female joint portion, is formed with the other of the first seal portion and the second seal portion at a tip position of the convex shape in a part of the other end of the core material along the second direction of the core material. The panel joint structure according to claim 1.

5. A packing is provided between the female joint portion and the male joint portion to be joined and at a position first outside the panel relative to the first seal portion and the second seal portion. The panel joint structure according to claim 4.

6. The panel includes a core material having a predetermined thickness along a first direction, and a pair of metal plates attached to a first surface and a second surface of the core material, respectively; A female joint portion having a concave shape extending along a third direction perpendicular to the first direction is provided at one end of the panel along a second direction perpendicular to the first direction, The other end of the panel along the second direction is provided with a male joint portion having a convex shape extending along the third direction, A panel fixing structure in which the panels are arranged adjacent to each other in the second direction and a panel joining structure is used to join the female joint portion and the male joint portion to be joined, thereby fixing the panel to a fixing object to form a panel fixing portion, The female joint portion is formed by forming one-end joint plate portions on the pair of metal plates at positions on both sides of the recess in the recess shape, the one-end joining plate portion includes a one-end outer plate portion continuing from the metal plate main body of each of the pair of metal plates, a one-end first bent portion continuing from the one-end outer plate portion, and a one-end inner plate portion continuing from the one-end first bent portion and positioned on a first inner side of the panel that is more inward in the first direction than the one-end outer plate portion, and a one-end groove portion is formed at a predetermined position of the one-end inner plate portion, The one end groove portion is recessed toward a first outer side of the panel, which is an outer side along the first direction, and is formed in a groove shape extending along the third direction, The panel fixing portion is formed by screwing a first screw into the one end groove portion to fix the female joint portion to the fixing object. Panel fixing structure.

7. The male joint portion, which is a joint partner of the female joint portion, has other end joint plate portions formed on the pair of metal plates at both sides of the convex shape, the other end joining plate portion includes an other end step portion that is continuous with the metal plate body and has a step shape toward the first inner side of the panel, and an other end inner plate portion that is continuous with the other end step portion, and the other end step portion is formed so as to secure a predetermined first distance with respect to the one end first bent portion of the female joint portion, The other end inner plate portion is formed with an other end groove portion, The other end groove portion is formed in a groove shape recessed within the range of the first interval toward the first inward side of the panel and extending along the third direction, The panel fixing portion is further formed by screwing a second screw into the other end groove portion to fix the male joint portion to the fixing object. The panel fixing structure according to claim 6.

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