Panel structure

Abstract

To provide a panel structure which can strongly fasten a reinforcement panel and a base material panel without using welding.SOLUTION: A panel structure is provided with a base material panel 22 and a reinforcement panel. The base material panel 22 has a planar main panel wall 25, a first side edge wall 26, and a first flange wall 28. The first side edge wall 26 extends to a side opposite the side which a cosmetic surface faces from one side edge part of the main panel wall 25. The first flange wall 28 extends in an opposite side of the back face of the cosmetic surface of the main panel wall 25 from the extension end of the first side edge wall 26. The reinforcement panel is provided with a first connection part 34, a second connection part 35, and an intermediate wall 36. The intermediate wall 36 connects the first connection part 34 and the second connection part 35. The second connection part 35 is jointed by an adhesive member to the back face of the cosmetic surface of the main panel wall 25. The first connection part 34 is fastened to the first flange wall 28 by a fastening member which penetrates in a plate thickness direction at least one of the first flange wall 28 and the first connection part 34.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a panel structure used as a fixture or as a part of a fixture. [Background technology]

[0002] 2. Description of the Related Art Panel structures having decorative surfaces are often used for fixtures such as partitions, desk equipment, and storage shelves used in offices, public facilities, and the like (see, for example, Patent Document 1).

[0003] In many of these types of panel structures, a separate reinforcing panel is attached to the back or peripheral portion of a base panel having a decorative surface, and the reinforcing panel and the base panel form a strong closed cross-sectional structure. The base panel and the reinforcing panel are made of metal plates, and the contact portions of both panels are joined by welding or the like. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-19343 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, while the above-mentioned conventional panel structure can firmly fix the reinforcing panel and the base panel, welding is used to join the panels together, which may result in weld marks on the decorative surface. For this reason, the surface of the decorative surface may be smoothed or painted, or may be covered with cloth or the like to hide the surface. In this case, the manufacture of the panel structure becomes complicated. In addition, some materials for the base panels and reinforcing panels that make up the panel structure are not suitable for welding, and when such materials are used, it is difficult to firmly fix the reinforcing panel and base panel together.

[0006] SUMMARY OF THE PRESENT DISCLOSURE The present invention provides a panel structure capable of firmly fixing a reinforcing panel and a base panel together without the use of welding. [Means for solving the problem]

[0007] In order to solve the above problems, the panel structure according to the present invention employs the following configuration. That is, the panel structure of the present invention comprises a base panel having a decorative surface and a reinforcing panel reinforcing a side edge portion of the base panel, the base panel having a flat main panel wall one face of which is the decorative surface, a first side edge wall extending from one side edge portion of the main panel wall to the side opposite to the side facing the decorative surface, and a first flange wall extending from an extended end of the first side edge wall so as to face the back surface of the decorative surface of the main panel wall, the reinforcing panel having a first connection portion connected to the first flange wall, a second connection portion connected to the back surface of the decorative surface of the main panel wall, and an intermediate wall connecting the first connection portion and the second connection portion, the second connection portion and the back surface of the decorative surface of the main panel wall being joined by an adhesive member, and the first flange wall and the first connection portion being fixed by a fixing member penetrating at least one of the first flange wall and the first connection portion in the plate thickness direction.

[0008] In this panel structure, the second connection portion of the reinforcing panel is joined to the rear surface of the base panel by an adhesive member. On the other hand, the first connection portion of the reinforcing panel is fixed to the first flange wall of the base panel by a fixing member that penetrates at least one of them in the plate thickness direction. Therefore, the first connection portion and the first flange wall are firmly fixed without welding. Also, a part of the fixing member that fixes the first connection portion and the first flange wall protrudes outside the first flange wall and the first connection portion, but the protruding part is located on the back side of the decorative surface of the base panel and is therefore not visible from the outside.

[0009] It is desirable that the base panel and the reinforcing panel form a closed cross section.

[0010] In this case, the reinforcing panel forms a closed cross section together with the base panel, so that the strength of the panel structure can be efficiently increased.

[0011] The reinforcing panel may extend along one side edge of the main panel wall.

[0012] In this case, the reinforcing panel, together with the base panel, forms a closed cross section extending along the side edge portion of the base panel, so that the strength of the side edge portion of the base panel can be efficiently increased.

[0013] The main panel wall has a polygonal shape when viewed from the front in a direction perpendicular to the decorative surface, and a second side edge wall extending to the opposite side to the side facing the decorative surface is provided at another side edge adjacent to the one side edge of the main panel wall, and a second flange wall is provided at the extending end of the second side edge wall extending so as to face the back surface of the decorative surface of the main panel wall, and the first flange wall and second flange wall may be stacked on top of each other and fixed to each other.

[0014] In this case, since the first flange wall is overlapped and fixed to the second flange wall extending from the second extension wall, the force acting on the first flange wall in a direction away from the main panel wall can be received by the second flange wall. Therefore, the bending and deformation of the first flange wall can be efficiently restricted. Therefore, when this configuration is adopted, the strength of the side edge portion of the base panel can be further increased.

[0015] The first flange wall and the first connection portion each have a facing portion where their edges face each other, and a plurality of first protruding pieces protruding from the facing portion of the first flange wall are provided on the facing portion of the first connection portion at positions that do not overlap with the first protruding pieces, and a plurality of second protruding pieces protruding from the facing portion are provided on the facing portion of the first connection portion, and the first protruding pieces wrap around a back surface of the facing portion of the first connection portion to form a first support portion that supports the back surface, and the second protruding pieces wrap around a back surface of the facing portion of the first flange wall to form a second support portion that supports the back surface.

[0016] In this case, the first support portion provided on the edge of the first flange wall wraps around the back surface of the facing portion of the first connection portion to support the back surface. At the same time, the second support portion provided on the edge of the first connection portion wraps around the back surface of the facing portion of the first flange wall to support the back surface. Therefore, the edges of the first flange wall and the first connection portion are engaged with each other in a manner that supports each other from the back surface direction in the vicinity of the facing portion. In this state, the first flange wall and the first connection portion are fixed by a fixing member that penetrates at least one of them in the plate thickness direction. Therefore, when this configuration is adopted, the panel materials can be fixed with higher strength. In addition, since the first flange wall and the first connection portion can be fixed with the fixing member in a state in which the edges of the first flange wall and the first connection portion are engaged with each other by the first support portion and the second support portion, the fixing work by the fixing member can be easily performed.

[0017] The adhesive member is preferably a double-sided tape.

[0018] In this case, it is only necessary to attach the double-sided tape to the opposing surfaces of the second connection portion and the main panel wall, so that the second connection portion can be easily fixed to the back surface of the main panel wall without compromising the external appearance.

[0019] The fixing members are preferably rivets.

[0020] In this case, rivet holes are formed in advance in the first connection part and the first flange wall, and the first connection part and the first flange wall can be easily fixed together by simply inserting a rivet through the rivet holes and fastening the rivet. Therefore, when this configuration is adopted, the first connection part and the first flange wall can be firmly and easily fixed together. Effect of the Invention

[0021] In the panel structure according to the present invention, the second connection portion of the reinforcing panel is joined to the back surface of the base panel by an adhesive member, and the first connection portion of the reinforcing panel is fixed to the first flange wall of the base panel by a fixing member that penetrates at least one of them in the plate thickness direction. Therefore, when the panel structure according to the present invention is used, the reinforcing panel and the base panel can be firmly fixed together without welding. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is an oblique view of a display unit with a tabletop according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of a portion of a display unit with a tabletop according to an embodiment, viewed from the rear side. [Diagram 3] FIG. 1 is a perspective view of a closed cross-sectional structure according to a first embodiment. [Figure 4] FIG. 2 is an exploded perspective view of the closed section structure of the first embodiment. [Diagram 5] FIG. 2 is a perspective view showing a portion of a base panel of the closed cross-sectional structure of the first embodiment. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 5 . [Figure 7] FIG. 2 is a perspective view showing a portion of a reinforcing panel of the closed section structure of the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] An enlarged view of part X in Figure 9. [Figure 11] 10 is a cross-sectional view similar to FIG. 9 of a panel structure according to a first modified example. [Figure 12]10 is a cross-sectional view similar to FIG. 9 of a panel structure according to a second modified example. [Figure 13] 10 is a cross-sectional view similar to FIG. 9 of a panel structure according to a third modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment and each modification described below, the same parts are denoted by the same reference numerals, and some overlapping descriptions will be omitted. Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiments and modifications described below, the same parts are denoted by the same reference numerals, and some overlapping descriptions will be omitted.

[0024] Fig. 1 is a perspective view of a fixture 1 with a tabletop that employs a panel structure 20 of this embodiment. Fig. 2 is a perspective view of a portion of the fixture 1 with a tabletop, viewed from the rear side. This fixture 1 with a tabletop is used, for example, in educational facilities, medical facilities, research facilities, office spaces, and the like. The furniture with a top plate 1 includes a pair of supports 10 that are erected on the floor surface F of an office space at a distance from each other, a plurality of (three) article storage shelves 11 that are erected on the pair of supports 10, a top plate 12 that is erected on the pair of supports 10 below the lowest article storage shelf 11, and a pair of side panels 13 whose rear ends are connected to the supports 10. The side panels 13 cover the sides of the rear area of ​​the top plate 12, creating an environment (space) in which workers facing the top plate 12 can easily concentrate. In addition, the surface of the side panels 13 that faces the outside (the surface that does not face the top plate 12) is a decorative surface 21, and the appearance from the outside is well maintained. The panel structure 20 of this embodiment is used for, for example, the side panel 13 or the rear panel 15. The panel structure 20 of this embodiment that is used for the side panel 13 or the rear panel 15 is a panel structure that divides a space. However, the uses of the panel structure 20 are not limited to this, and it can also be used, for example, as a top plate for fixtures, a door for a storage shelf, a partition, etc.

[0025] First Embodiment FIG. 3 is a perspective view of the panel structure 20 of this embodiment as viewed from the rear side, and FIG. The panel structure 20 includes a base panel 22 having a decorative surface 21 (see Figs. 1 and 2) and rectangular in front view, a pair of side reinforcing panels 23 joined to both side edges on the rear side of the base panel 22, and a central reinforcing panel 24 joined to approximately the center of the rear side of the base panel 22. The pair of side reinforcing panels 23 and the central reinforcing panel 24 are each joined to the base panel 22 to form a closed cross section between them. In this embodiment, the base panel 22, the side reinforcing panels 23, and the central reinforcing panel 24 are formed from metal plate material. However, they may also be formed from materials other than metal.

[0026] In the following description of the panel structure 20, the shorter direction of the rectangular shape when viewed from the front of the base panel 22 is referred to as the "first direction," and the longer direction of the rectangular shape is referred to as the "second direction." The direction perpendicular to the first and second directions is referred to as the "third direction." In addition, an arrow x pointing to the first direction, an arrow y pointing to the second direction, and an arrow z pointing to the third direction are shown in appropriate positions in the drawings. Furthermore, in the following description, the “rear surface” of the base panel 22 refers to the surface located behind the decorative surface 21 .

[0027] Fig. 5 is a perspective view of a part of the base panel 22 as viewed from the rear side. Fig. 6 is a cross-sectional view of the base panel 22 taken along line VI-VI in Fig. 5. The base panel 22 includes a flat main panel wall 25, one surface of which is the decorative surface 21, first side edge walls 26 (side edge walls) extending from both side edges of the main panel wall 25 in the first direction to the side opposite to the side on which the decorative surface 21 faces, and first flange walls 28 (flange walls) extending from the extending ends of the first side edge walls 26 to the side facing the back surface 27 of the decorative surface 21. The first side edge walls 26 extend along the third direction and the second direction at the side edges of both sides of the main panel wall 25 in the first direction. The first flange walls 28 extend along the first direction and the second direction at the extending ends of the first side edge walls 26, and are parallel to the main panel wall 25 and face the back surface 27 of the main panel wall 25.

[0028] The base panel 22 further includes second side edge walls 29 extending from both side edges of the main panel wall 25 in the second direction to the side opposite to the side facing the decorative surface 21, and second flange walls 30 extending from the extending ends of the second side edge walls 29 to the side facing the back surface 27 of the decorative surface 21. The second side edge walls 29 extend along the third direction and the first direction at both side edges of the main panel wall 25 in the second direction. The second flange walls 30 extend along the first direction and the second direction at the extending ends of the second side edge walls 29, and are parallel to the main panel wall 25 and face the back surface 27 of the main panel wall 25. The extending length of the second side edge walls 29 in the third direction is set to be approximately the same as the extending length of the first side edge walls 26 in the third direction.

[0029] 4, ends of the adjacent first flange walls 28 are overlapped in the plate thickness direction at both ends of the second flange wall 30 in the first direction. The overlapping portions of the second flange wall 30 and the first flange wall 28 are fixed by rivets 31 (fixing members) that penetrate the second flange wall 30 and the first flange wall 28 in the plate thickness direction.

[0030] As described above, the first side edge wall 26 and the first flange wall 28 are connected to both side edges of the base panel 22 in the first direction, and the second side edge wall 29 and the second flange wall 30 are connected to both side edges of the base panel 22 in the second direction. As a result, a continuous frame shape that opens inwardly in a roughly U-shape is formed around the periphery of the base panel 22.

[0031] The first flange walls 28 arranged on both sides of the base panel 22 in the first direction have a flange body 28a extending a certain length from the extending end of the first side edge wall 26 toward the center of the main panel wall 25, and a plurality of first protruding pieces 32 protruding from the extending end of the flange body 28a. In this embodiment, the flange body 28a constitutes the facing portion on the base panel 22 side. The end face of the flange body 28a in the extending direction extends linearly along the second direction. In other words, the end face of the flange body 28a in the extending direction is formed to be linear in a plan view. The plurality of first protruding pieces 32 protrude from the end face of the flange body 28a extending linearly at a predetermined interval in the second direction.

[0032] 6, a bent portion 33 that is bent in a stepped shape toward the back surface 28ab of the flange main body 28a is provided at the base portion of each of the first protruding pieces 32. The height of the stepped portion of the bent portion 33 is set to be substantially equal to the thickness dimension of the base panel 22 and the side reinforcing panel 23. The back surface 28ab of the flange main body portion 28a (opposing portion) refers to the surface facing the inside of the closed cross section formed by the base panel 22 and the side reinforcing panel 23.

[0033] The side reinforcement panels 23 arranged on both sides in the first direction have the same basic configuration. However, the side reinforcement panel 23 arranged on one side in the first direction and the side reinforcement panel 23 arranged on the other side in the first direction have different extension widths in the first direction. In addition, the two side reinforcement panels 23 are joined to the base panel 22 by the same joining structure.

[0034] Fig. 7 is a perspective view of one side reinforcing panel 23 as viewed from the rear side of the panel structure 20. Fig. 8 is a cross-sectional view of one side reinforcing panel 23 taken along line VIII-VIII in Fig. 7. Fig. 9 is a cross-sectional view of the panel structure 20 taken along line IX-IX in Fig. 3. The side reinforcement panel 23 includes a first connection portion 34 joined to the first flange wall 28 of the base panel 22, a second connection portion 35 joined to the back surface 27 of the main panel wall 25 of the base panel 22, and an intermediate wall 36 connecting the first connection portion 34 and the second connection portion 35. The side reinforcement panel 23 extends from one end side to the other end side of the base panel 22 in the second direction along the side edge portion of the main panel wall 25 of the base panel 22.

[0035] The intermediate wall 36 has a cross section perpendicular to the first direction formed into a substantially L-shape. When the side reinforcing panel 23 is attached to the base panel 22, one side 36a of the substantially L-shape of the intermediate wall 36 is parallel to the first side edge wall 26 of the base panel 22 and faces the inner surface of the first side edge wall 26. The other side 36b of the substantially L-shape of the intermediate wall 36 is parallel to the main panel wall 25 of the base panel 22 and faces the back surface 27 of the main panel wall 25.

[0036] The first connection portion 34 is formed continuously with the end of the other side 36b of the intermediate wall 36. The first connection portion 34 has a main body wall 34a extending linearly from the other side 36b of the intermediate wall 36, and a plurality of second protruding pieces 37 protruding from the extending end of the main body wall 34a. In this embodiment, the main body wall 34a constitutes the facing portion on the side reinforcement panel 23 side. The end face of the extending direction of the main body wall 34a of the first connection portion 34 extends linearly along the second direction. That is, the end face of the extending direction of the main body wall 34a is formed so as to form a straight line in a plan view. The plurality of second protruding pieces 37 protrude from the end face of the linearly extending main body wall 34a at a predetermined interval in the second direction. However, the second protruding pieces 37 are arranged at a position that does not overlap with the first protruding pieces 32 on the base panel 22 side in the second direction.

[0037] 8, a bent portion 38 that is bent in a stepped shape toward the back surface 34ab of the main body wall 34a is provided at the base portion of each second protruding piece 37. The height of the stepped portion of the bent portion 38 is set to be substantially equal to the thickness dimension of the base panel 22 and the side reinforcing panel 23. The back surface 28ab of the main body wall 34a (the mating portion) refers to the surface facing the inside of the closed cross section formed by the base panel 22 and the side reinforcing panel 23.

[0038] An end face of the main body wall 34a of the first connecting portion 34 faces an end face of the flange main body portion 28a of the first flange wall 28 on the base panel 22 side. In other words, the end faces of the main body wall 34a, which is the facing portion on the side reinforcing panel 23 side, and the flange main body portion 28a, which is the facing portion on the base panel 22 side, face each other. In this embodiment, the two facing portions (the main body wall 34a and the flange main body portion 28a) face each other on the same plane, but in this specification, "facing each other" also includes cases where they do not face each other on a completely same plane. "Facing each other" also includes cases where there is a slight misalignment in the plate thickness direction of the panel.

[0039] As described above, when the end face of the main body wall 34a of the first connecting portion 34 and the end face of the flange main body portion 28a of the first flange wall 28 are opposed to each other, the second protruding piece 37 on the first connecting portion 34 side is inserted into the back surface 28ab of the flange main body portion 28a on the first flange wall 28 side, and the first protruding piece 32 on the first flange wall 28 side is inserted into the back surface 34ab of the main body wall 34a on the first connecting portion 34 side. As a result, the second protruding piece 37 on the first connecting portion 34 side wraps around the back surface 28ab of the first flange wall 28 side to support the back surface 28ab, and the first protruding piece 32 on the first flange wall 28 side wraps around the back surface 34ab of the first connecting portion 34 side to support the back surface 34ab. In this embodiment, the first protruding piece 32 constitutes a first support portion, and the second protruding piece 37 constitutes a second support portion. That is, the first protruding piece 32, which is the first support portion, is provided on the edge of the base panel 22 and supports a back surface 34ab of the facing portion of the edge of the side reinforcement panel 23. The second protruding piece 37, which is the second support portion, is provided on the edge of the side reinforcement panel 23 and supports a back surface 28ab of the facing portion of the edge of the base panel 22.

[0040] Further, the second connection portion 35 of the side reinforcement panel 23 is continuous with an extending end of one side 36a of the intermediate wall 36. The second connection portion 35 is formed by bending the end of the one side 36a of the intermediate wall 36 at a substantially right angle. The second connection portion 35 is bent in the opposite direction to the extending side of the first connection portion 34. One surface of the second connection portion 35 faces the back surface 27 of the main panel wall 25 of the base panel 22. The second connection portion 35 is joined to the back surface 27 of the main panel wall 25 with double-sided tape 50, which is an adhesive member.

[0041] 10, the first flange wall 28 on the base panel 22 side and the first connection portion 34 on the side reinforcing panel 23 side are fixed by a rivet 55 (fixing member) that penetrates the first flange wall 28 and the first connection portion 34 in the plate thickness direction. Specifically, rivet holes 39, 40 are formed in the overlapping portions of the second protruding piece 37 and the flange main body portion 28a, respectively. A shaft portion 55a of the rivet 55 is inserted into these rivet holes 39, 40. In this state, the rivet 55 firmly fixes the overlapping portions of the second protruding piece 37 and the flange main body portion 28a by crimping the axial end portion.

[0042] 3 and 4, the cross section perpendicular to the second direction of the central reinforcing panel 24 is formed in a hat shape. The hat-shaped cross section of the central reinforcing panel 24 extends along the second direction. Two flange portions 24a of the central reinforcing panel 24 spaced apart from each other in the first direction are joined to the back surface 27 of the main panel wall 25 of the base panel 22 by an adhesive means such as double-sided tape.

[0043] (Effects of the embodiment) As described above, in the panel structure 20 of this embodiment, the second connection portion 35 of the side reinforcement panel 23 (reinforcement panel) is joined to the back surface 27 of the main panel wall 25 of the base panel 22 by the double-sided tape 50 (adhesive member). Therefore, no work marks such as welding marks are left on the decorative surface 21 side of the base panel 22. Also, in the panel structure 20, the first connection portion 34 of the side reinforcement panel 23 is firmly fixed to the first flange wall 28 of the base panel by the rivet 55 (fixing member) that penetrates both of them in the plate thickness direction. After the first connection portion 34 and the first flange wall 28 are fixed by the rivet 55, a part of the rivet 55 is exposed to the outside, but the exposed part of the rivet 55 is located on the back surface side of the decorative surface 21 of the base panel 22, and therefore cannot be seen from the outside. Therefore, when the panel structure 20 of this embodiment is adopted, the side reinforcing panel 23 (reinforcing panel) and the base panel 22 can be firmly fixed without welding. Furthermore, the external appearance can be well maintained.

[0044] Furthermore, in the panel structure 20 of the present embodiment, the base panel 22 and the side reinforcing panel 23 (reinforcing panel) are joined to form a closed cross section, so that the strength of the panel structure 20 can be increased efficiently.

[0045] In particular, in the panel structure 20 of this embodiment, since the side reinforcing panels 23 extend along the side edges of the main panel walls 25, the strength of the entire side edges of the base panel 22 can be efficiently increased.

[0046] In addition, in the panel structure 20 of this embodiment, a first flange wall 28 extending from one side edge portion of the base panel 22 and a second flange wall 30 extending from the other adjacent side edge portion are stacked on each other, and in this state, both flange walls 28, 30 are fixed by rivets 31 (fixing members). Therefore, when a force acts on the first flange wall 28 in a direction away from the main panel wall 25, the force is received by the second flange wall 30, and deflection and deformation of the first flange wall 28 can be efficiently restricted. Therefore, when this configuration is adopted, the strength of the side edge portion of the base panel 22 can be further increased.

[0047] In addition, in the panel structure 20 of this embodiment, a plurality of first protruding pieces 32 are protrudingly provided at the facing portion of the first flange wall 28, and a plurality of second protruding pieces 37 are provided at the facing portion of the first connection portion 34 at positions that do not overlap with the first protruding pieces 32. The first protruding pieces 32 are wrapped around the back surface 34ab of the facing portion of the first connection portion 34 to form a first support portion that supports the back surface 34ab, and the second protruding pieces 37 are wrapped around the back surface 28ab of the facing portion of the first flange wall 28 to form a second support portion that supports the back surface 28ab. Therefore, the edges of the first flange wall 28 and the first connection portion 34 are engaged with each other in the vicinity of the facing portion in a manner that supports each other from the back surface direction. In addition, the first flange wall 28 and the first connection portion 34 are fixed in this state by a rivet 55 (fixing member). Therefore, when this configuration is adopted, the panel materials can be fixed together with higher strength. Also, when this configuration is adopted, the first flange wall 28 and the first connecting portion 34 can be fixed together with the rivet 55 in a state in which the edges of the first flange wall 28 and the first connecting portion 34 are engaged with each other by the first protruding piece 32 and the second protruding piece 37, so that the fixing work with the rivet 55 can be easily performed.

[0048] Furthermore, in the panel structure 20 of this embodiment, double-sided tape 50 is used as an adhesive member for joining the second connection portion 35 and the main panel wall 25. In this case, since it is only necessary to attach the double-sided tape 50 to the mutually opposing surfaces of the second connection portion 35 and the main panel wall 25, the second connection portion 35 can be easily fixed to the back surface of the main panel wall 25 without impairing the external appearance.

[0049] Furthermore, in the panel structure 20 of this embodiment, a rivet 55 is used as a fixing member for fixing the first connection portion 34 to the first flange wall 28. In this case, the rivet holes 39, 40 are formed in advance in the first connection portion 34 and the first flange wall 28, and the first connection portion 34 and the first flange wall 28 can be easily fixed together simply by inserting the rivet 55 through these rivet holes 39, 40 and crimping it. Therefore, when this configuration is adopted, the first connection portion 34 and the first flange wall 28 can be firmly and easily fixed together.

[0050] <First Modification> FIG. 10 is a cross-sectional view similar to FIG. 8 of the panel structure of the first modified example. The panel structure 20A of this modified example is formed by simply overlapping the first flange wall 28A on the first connection portion 34A of the side reinforcement panel 23, and then fixing the first connection portion 34A and the first flange wall 28A in this state with a rivet 55.

[0051] <Second Modification> FIG. 12 is a cross-sectional view similar to FIG. 8 of the panel structure of the second modified example. In the panel structure 20B of this modified example, the second connection portion 35B of the side reinforcement panel 23 is bent to the same side as the first connection portion 34A. In this case as well, the second connection portion 35B bent to the same side as the first connection portion 34A is joined to the main panel wall 25 with the double-sided tape 50.

[0052] <Third Modification> FIG. 13 is a cross-sectional view similar to FIG. 8 of a panel structure according to a third modified example. In the panel structure 20C of this modification, similarly to the second modification, the second connection portion 35B of the side reinforcement panel 23 is bent to the same side as the first connection portion 34A. The first connection portion 34A of the side reinforcement panel 23 overlaps the outer side of the first flange wall 28A.

[0053] The present invention is not limited to the above embodiment, and various design changes are possible without departing from the spirit of the present invention. For example, in the above embodiment, the second protruding piece 37 is fixed to the flange main body 28a by the rivet 55, which is a fixing member, but the fixing member is not limited to the rivet 55. The fixing member may be, for example, a bolt, a nut, or the like. In addition, in the above embodiment, the second connection portion 35 is joined to the rear surface 27 of the main panel wall 25 by the double-sided tape 50 which is an adhesive member, but the adhesive member is not limited to the double-sided tape 50. The adhesive member may be, for example, an adhesive agent or the like.

[0054] Furthermore, in the above embodiment, the reinforcing panels (side reinforcing panels 23) are attached only to both side edges of the base panel 22 in the first direction, but similar reinforcing panels may also be attached to the side edges of the base panel 22 in the second direction.

[0055] In the above embodiment, the main panel wall 25 of the base panel 22 is formed to have a rectangular shape when viewed from the front, but the shape of the main panel wall 25 is not limited to this. The main panel wall 25 may have a polygonal shape other than a rectangle, such as a triangle, pentagon, or hexagon, when viewed from the front.

[0056] In the above embodiment, the first flange wall 28 and the first connecting portion 34 are fixed by a fixing member (rivet 55) that penetrates both of them in the plate thickness direction, but the fixing member does not necessarily have to penetrate both the first flange wall 28 and the first connecting portion 34. The fixing member may be fixed to one side and penetrate only the other side. [Explanation of symbols]

[0057] 20, 20A, 20B, 20C...Panel structure 21...Cosmetic surface 22...Base panel 23...Side reinforcement panel (reinforcement panel) 25…Main panel wall 26...First side edge wall 26 (side edge wall) 28, 28A…First flange wall 28a…Flange body (facing part) 29…Second side edge wall 30…Second flange section 31...Fixing member 32...First protruding piece (first support part) 34, 34A…First connection part 34a…Main body wall (facing part) 35, 35B…Second connection part 36…Intermediate wall 37…Second protruding piece (second support part) 50…Double-sided tape (adhesive material) 55…Rivet (fixing member)

Claims

1. A substrate panel having a decorative surface; A reinforcing panel that reinforces a side edge portion of the base panel, The base panel is A flat main panel wall, one surface of which is the decorative surface; a first side edge wall extending from one side edge portion of the main panel wall to a side opposite to the side to which the decorative surface faces; a first flange wall extending from an extended end of the first side edge wall so as to face a back surface of the decorative surface of the main panel wall; The reinforcing panel comprises: a first connection portion coupled to the first flange wall; a second connection portion coupled to a rear surface of the decorative surface of the main panel wall; an intermediate wall connecting the first connection portion and the second connection portion; The second connection portion and the back surface of the decorative surface of the main panel wall are joined by an adhesive member, A panel structure characterized in that the first flange wall and the first connection portion are fixed by a fixing member that penetrates at least one of the first flange wall and the first connection portion in a plate thickness direction.

2. The panel structure according to claim 1 , wherein the base panel and the reinforcing panel form a closed cross section.

3. 3. The panel structure of claim 2, wherein the reinforcing panel extends along one side edge of the main panel wall.

4. The main panel wall has a polygonal shape when viewed from a front side in a direction perpendicular to the decorative surface, A second side edge wall is provided on another side edge portion adjacent to the one side edge portion of the main panel wall, the second side edge wall extending on the opposite side to the side on which the decorative surface faces, A second flange wall is provided at an extending end of the second side edge wall so as to extend opposite to the back surface of the decorative surface of the main panel wall, 2. The panel structure according to claim 1, wherein the first flange wall and the second flange wall are overlapped and fixed to each other.

5. The first flange wall and the first connection portion each have a facing portion where end edges face each other, A plurality of first protruding pieces are provided at the facing portion of the first flange wall so as to protrude from the facing portion, A plurality of second protruding pieces are provided at positions of the facing portion of the first connection portion that do not overlap with the first protruding pieces, the second protruding pieces protruding from the facing portion, the first protruding piece constitutes a first support portion that wraps around a back surface of the facing portion of the first connection portion and supports the back surface, 2. The panel structure according to claim 1, wherein the second projecting piece constitutes a second support portion that wraps around a rear surface of the facing portion of the first flange wall and supports the rear surface.

6. 2. The panel structure according to claim 1, wherein the adhesive member is a double-sided tape.

7. 2. The panel structure according to claim 1, wherein the fixing member is a rivet.

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