Bed panel, bed panel support structure, and bed panel support

Abstract

To provide floor panels that are strong, have high joint strength between top and bottom panels, and can suppress distortion of the bottom panel.SOLUTION: A core 2 comprises an upper surface 2a, a lower surface 2b and a side surface 2c. A lower plate 4 comprises a lower surface covering portion 4a covering the lower surface 2b of the core 2. An upper plate 3 comprises: an upper surface covering portion 3a covering the upper surface 2a of the core 2; an upper plate side surface covering portion 3b continuously bent from the upper surface covering portion 3a to cover the side surface 2c; an upper plate side surface extension portion 3c continuously extending downward from the upper plate side surface covering portion 3b; an upper plate side surface folding portion 3d continuously folded back from the upper plate side surface extension portion 3c; and a joint portion 30 which is continuously folded from the upper plate side surface folding portion 3d along the lower surface covering portion 4a and overlapping the lower surface of the lower plate 4 to be joined together.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a floor panel, a floor panel support structure, and a floor panel support suitable for forming a double floor by being installed above a floor slab.

Background Art

[0002] Floors in offices and the like that use a large number of OA devices are often made into double floors. Such a double floor is formed by erecting a large number of support legs on a floor slab, supporting the corners of a floor panel with the support legs, forming a wiring space between the floor slab and the floor panel, and wiring cables in this wiring space.

[0003] The applicant has previously proposed, as a floor panel used for a double floor, a floor panel including a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material. The core material has a side surface that vertically rises from the lower surface. The lower plate has a lower surface covering portion that covers the lower surface of the core material, and a lower plate side surface covering portion that is continuously bent along the side surface from the lower surface covering portion to cover at least a part of the side surface. The upper plate has an upper surface covering portion that covers the upper surface of the core material, an upper plate side surface covering portion that is continuously bent along the side surface from the upper surface covering portion to cover the side surface, and a joint portion that is continuously bent along the lower surface covering portion from the upper plate side surface covering portion and is overlapped and joined to the lower surface of the lower plate. The joint portion is deformed by pressing the upper plate and the lower plate from below with a pressing tool and is joined to the lower plate or the core material.

[0004] For the upper plate and the lower plate that cover the core material of such a floor panel, since they are formed by bending without drawing, if there is a development drawing, it can be easily manufactured like origami, and the portion that becomes waste after processing is low, improving the yield efficiency. Also, compared with drawing, bending can reduce the radius inside the bent portion. Therefore, when arranging a core material such as a particle board pre-formed in the concave portion of the lower plate, it is difficult for gaps to occur, so the filling rate is improved and the strength is increased.

Prior Art Documents

Patent Document

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] As for the floor panel as described in the above Patent Document 1, when, for example, burring is performed by pressing the upper plate and the lower plate to deform the joint portion with the lower plate or the core material, distortion may occur in the lower plate. In particular, in order to improve the manufacturing efficiency, when trying to process all the peripheries (for example, each of the four sides in the case of a square) of the floor panel simultaneously, distortion gathers inward from all the peripheries of the lower plate, and there is a risk that the lower plate bulges downward and floats from the core material.

[0007] The problem to be solved by the present invention is to provide a floor panel, a floor panel support structure, and a floor panel support tool that are tough, ensure the bonding strength between the upper plate and the lower plate, and can suppress the distortion of the lower plate.

Means for Solving the Problems

[0008] The invention according to claim 1 of the present application is a floor panel including a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material, wherein the core material has a side surface rising vertically from the lower surface, the lower plate has a lower surface covering portion covering the lower surface of the core material, the upper plate has an upper surface covering portion covering the upper surface of the core material, an upper plate side surface covering portion that is continuously bent along the side surface from the upper surface covering portion to cover the side surface, an upper plate side surface extension portion that continuously extends downward from the upper plate side surface covering portion, an upper plate side surface folding portion that is continuously folded back along the upper plate side surface extension portion from the upper plate side surface extension portion, and a joint portion that is continuously bent along the lower surface covering portion from the upper plate side surface folding portion and is superposed and joined to the lower surface of the lower plate.

[0009] The invention according to claim 2 of the present application is such that the upper plate has a restricting recess formed on the upper surface of the upper plate, the lower plate has a restricting projection engageable with the restricting recess on the lower surface of the lower plate, and the protruding length of the restricting projection is longer than the height of a reinforcing rib formed by an upper plate side surface extension and an upper plate side surface folded-back portion, which is the floor panel according to claim 1.

[0010] The invention according to claim 3 of the present application is such that the protruding length of the restricting projection is longer than the sum of the height of the reinforcing rib and the depth of the restricting recess, which is the floor panel according to claim 2.

[0011] The invention according to claim 4 of the present application is such that the joint portion has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below with a pressing tool and is joined to the lower plate, which is the floor panel according to any one of claims 1 to 3.

[0012] The invention according to claim 5 of the present application is such that the joint portion has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below with a pressing tool, bites into the lower part of the core material, and is joined to the lower plate, which is the floor panel according to any one of claims 1 to 3.

[0013] The invention according to claim 6 of the present application is such that the joint portion is provided with a through hole, and has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below through the through hole with a pressing tool, bites into the lower part of the core material, and is joined to the lower plate, which is the floor panel according to any one of claims 1 to 3.

[0014] The invention according to claim 7 of the present application is a floor panel support structure for supporting a floor panel including a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material with a floor panel support. The floor panel has a side surface that rises vertically from the lower surface, the lower plate has a lower surface covering portion covering the lower surface of the core material, the upper plate has an upper surface covering portion covering the upper surface of the core material, an upper plate side surface covering portion that is continuously bent along the side surface from the upper surface covering portion to cover the side surface, an upper plate side surface extension portion that continuously extends downward from the upper plate side surface covering portion, an upper plate side surface folding portion that is continuously folded along the upper plate side surface extension portion from the upper plate side surface extension portion, and a joint portion that is continuously bent along the lower surface covering portion from the upper plate side surface folding portion and is superposed and joined to the lower surface of the lower plate. The floor panel support has a receiving base on which the floor panel is placed, the receiving base has a receiving groove, and the upper plate side surface extension portion and the upper plate side surface folding portion are housed in the receiving groove. This is a floor panel support structure characterized by this.

[0015] The invention according to claim 8 of the present application is the floor panel support structure according to claim 7, characterized in that the joint portion is housed in the receiving groove.

[0016] The invention according to claim 9 of the present application is a floor panel support for supporting a floor panel including a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material. The floor panel has a side surface that rises vertically from the lower surface, the lower plate has a lower surface covering portion covering the lower surface of the core material, the upper plate has an upper surface covering portion covering the upper surface of the core material, an upper plate side surface covering portion that is continuously bent along the side surface from the upper surface covering portion to cover the side surface, an upper plate side surface extension portion that continuously extends downward from the upper plate side surface covering portion, an upper plate side surface folding portion that is continuously folded along the upper plate side surface extension portion from the upper plate side surface extension portion, and a joint portion that is continuously bent along the lower surface covering portion from the upper plate side surface folding portion and is superposed and joined to the lower surface of the lower plate. The lower surface of the joint portion protrudes downward from the lower surface of the lower plate where the joint portions do not overlap. The bed panel support has a pedestal on which the bed panel is placed, and the pedestal is provided with a receiving groove capable of accommodating the upper plate side surface extension part and the upper plate side surface folding part. The receiving groove can further accommodate the joint portion. It is a bed panel support. As another invention, the following may also be applicable. The means 1 is a floor panel support for supporting a floor panel including a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material. The floor panel has a side surface that rises vertically from the lower surface. The lower plate has a lower surface covering portion that covers the lower surface of the core material. The upper plate includes an upper surface covering portion that covers the upper surface of the core material, an upper plate side surface covering portion that is continuously bent along the side surface from the upper surface covering portion to cover the side surface, an upper plate side surface extension portion that continuously extends downward from the upper plate side surface covering portion, an upper plate side surface folding portion that is continuously folded along the upper plate side surface extension portion from the upper plate side surface extension portion, and a joint portion that is continuously bent along the lower surface covering portion from the upper plate side surface folding portion and is joined to overlap the lower surface of the lower plate. The floor panel support has a receiving base on which the floor panel is placed, and the receiving base is characterized by having a receiving groove that can accommodate the upper plate side surface extension portion and the upper plate side surface folding portion.

[0017] Means 2 The receiving groove is further characterized in that it can accommodate the joint part. Means 1 It is the bed panel support according to the above.

Effect of the Invention

[0018] In the bed panel of the present invention, on the upper plate, a reinforcing rib is formed, which consists of an upper plate side surface extension part that continuously extends downward from the upper plate side surface covering part and an upper plate side surface folding part that is continuously folded along the upper plate side surface extension part from the upper plate side surface extension part. Therefore, the strength of the peripheral part of the bed panel is increased. In addition, since the joint part is pressed and supported from below by the upper plate side surface folding part of the reinforcing rib, compared with simply bending without providing the reinforcing rib, the distortion of the lower plate can be suppressed and the joint strength between the upper plate and the lower plate can also be increased. Furthermore, it is possible to omit or reduce the location where burring processing or the like is performed to press and deform the joint part and join it to the core material or the lower plate, and the distortion of the lower plate can be further suppressed.

[0019] In addition, a regulating recess is formed on the upper surface of the upper plate, a regulating protrusion engageable with the regulating recess is formed on the lower surface of the lower plate, and if the protruding length of the regulating protrusion is made longer than the height of the reinforcing rib formed by the upper plate side surface extension part and the upper plate side surface folding part, even if there is a case where they are stacked without engaging the regulating protrusion and the regulating recess, the reinforcing rib will not contact the upper surface of the lower bed panel, and damage to the joint part and the reinforcing rib can be prevented.

[0020] In addition, if the protruding length of the regulating convex portion is made longer than the sum of the height of the reinforcing rib and the depth of the regulating concave portion, when the regulating convex portion and the regulating concave portion are engaged and stacked, the reinforcing rib will not contact the upper surface of the lower floor panel, and damage to the reinforcing rib and the joint can be prevented.

[0021] In addition, the bent joint of the upper plate is deformed and joined to the lower plate by pressing the upper plate and the lower plate from below with a pressing tool, so there is no portion protruding downward on the lower surface of the joint. Therefore, even if the stacked floor panels are displaced, the joint will not be caught and damaged. Also, no separate joining tool is required, and joining can be easily performed.

[0022] In addition, the bent joint of the upper plate is deformed by pressing the upper plate and the lower plate from below with a pressing tool and bites into the lower part of the core material to be joined to the lower plate. Therefore, the upper plate and the lower plate are less likely to peel off and a strong structure can be achieved.

[0023] In addition, the bent joint of the upper plate is provided with a through hole and is deformed by pressing the upper plate and the lower plate from below with a pressing tool and bites into the lower part of the core material to be joined to the lower plate. Therefore, it is easy to position the pressing tool, and it is also easy to deform and join efficiently.

[0024] According to the floor panel support structure and the floor panel support tool of the present invention, the receiving base on which the floor panel is placed is provided with a receiving groove, and the upper plate side surface extension portion and the upper plate side surface folded-back portion of the floor panel are received in the receiving groove. Therefore, the floor panel does not rattle on the receiving base, and it is not necessary to install a cushioning material or the like on the upper surface of the receiving base to absorb the protruding lengths of the upper plate side surface extension portion and the upper plate side surface folded-back portion protruding downward.

[0025] In addition, since the joint is received in the receiving groove, it is possible to prevent the floor panel from rattling due to the joint overlapping below the lower plate.

Brief Description of the Drawings

[0026]

Figure 1

Figure 2

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Figure 16

Mode for Carrying Out the Invention

[0027] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to the embodiments.

[0028] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 9.

[0029] FIG. 1 is a plan view of a floor panel according to the first embodiment, FIG. 2 is a bottom view of the floor panel, FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 4 is a cross-sectional view taken along line B-B in FIG. 1, FIG. 5 is a cross-sectional view of a main part during the manufacture of the floor panel, FIG. 6 is a cross-sectional view of a main part of the floor panel support structure, FIG. 7 is a plan view of a main part of the floor panel support structure, FIG. 8 is a perspective view of a pedestal, and FIG. 9 is a plan view of the pedestal.

[0030] As shown in FIGS. 1 to 4, the floor panel 1 of the present embodiment is substantially square with side portions 1a of about 500 mm in length and width, and includes a core material 2, an upper plate 3 covering the upper surface of the core material 2, and a lower plate 4 covering the lower surface of the core material 2.

[0031] At the four corner portions 1b of the floor panel 1, chamfered portions 20 having a triangular chamfer are formed, and step portions 21 are formed on the upper surfaces of the respective corner portions 1b. The step portion 21 is formed about 4 to 5 mm lower than the upper surface which is the tread surface of the floor panel 1. A rising portion 22 continuous with the step portion 21 is formed from the upper surface of the floor panel 1.

[0032] The rising portion 22 is linear and parallel to the end face of the chamfered portion 20 in plan view. Further, the rising portion 22 is slightly inclined so as to gradually approach the end face of the chamfered portion 20 downward.

[0033] The core material 2 is made of a woody material such as particle board and has a thickness of about 20 mm, for example. In particular, the particle board adopted as the core material 2 can also have a three-layer structure of a dense and hard layer on the front and back surfaces and a relatively rough and soft layer inside, and can efficiently secure bending strength. Particularly in a floor panel where a relatively large load is assumed, such as an office floor, it is useful because bending strength is required. In addition, the core material of a woody material such as a particle board can sufficiently contribute to the active use of domestic wood against the backdrop of the enactment of the law on the promotion of the use of wood in public buildings and other facilities, and initiatives such as the Minato Model Carbon Dioxide Fixation Certification System.

[0034] The core material 2 is a rectangular parallelepiped, having an upper surface 2a and a lower surface 2b, and having side surfaces 2c that rise vertically from the lower surface 2b.

[0035] The core material 2 is provided, at four corner portions 1b, with chamfered core portions 2d that are chamfered into a triangular shape and made linear, stepped core portions 2e that are formed continuously from the chamfered core portions 2d, and rising core portions 2f that rise linearly parallel to the chamfered core portions 2d from the stepped core portions 2e to the upper surface 2a.

[0036] The upper plate 3 and the lower plate 4 are metal plates such as galvanized steel plates, and their thickness is about 0.3 mm, which is thinner than the thickness of the core material 2.

[0037] The lower plate 4 has a lower surface covering portion 4a that covers the lower surface 2b of the core material 2, and a lower plate side surface covering portion 4b that is continuously bent along the side surface 2c from the lower surface covering portion 4a to cover at least a part of the side surface 2c. In the present embodiment, it has the lower plate side surface covering portion 4b, but it may not have it. At the corner portion 1b of the floor panel 1, the lower plate 4 is not dimensioned to protrude from the lower surface 2b of the core material 2, and is not bent along the chamfered core portion 2d of the core material 2.

[0038] The length of one side of the upper plate 3 is longer than the sum of the length of one side of the core material 2 and twice the thickness of the core material 2. The upper plate 3 includes an upper surface covering portion 3a that covers the upper surface 2a of the core material 2, an upper plate side surface covering portion 3b that is continuously bent along the side surface from the upper surface covering portion 3a to cover the side surface 2c, an upper plate side surface extension portion 3c that continuously extends downward from the upper plate side surface covering portion 3b, an upper plate side surface folding portion 3d that is continuously folded along the upper plate side surface extension portion 3c from the upper plate side surface extension portion 3c, and a joint portion 30 that is continuously bent along the lower surface covering portion 4a from the upper plate side surface folding portion 3d and is overlapped and joined to the lower surface of the lower plate 4.

[0039] The double-folded upper plate side surface extension portion 3c and the upper plate side surface folding portion 3d form a reinforcing rib 32 that protrudes downward from the outer periphery of the lower surface of the floor panel 1.

[0040] The joint portion 30 is joined by being pressed and supported on the lower surface of the lower plate 4 by the upper plate side surface folding portion 3d that is folded along the upper plate side surface extension portion 3c. Therefore, the joint strength can be increased as compared with simply bending from the upper plate side surface covering portion 3b and joining the joint portion to the lower plate.

[0041] Also, when joining the joint portion to the lower plate, if simply bent from the upper plate side surface covering portion 3b, a force acts in the lateral direction (from the periphery of the panel toward the center) on the lower surface of the lower plate 4, and the lower plate is likely to be distorted and bulge downward. However, since the joint portion 30 is formed from the reinforcing rib 32, no force acts in the lateral direction on the lower surface of the lower plate 4, and only the pressing force from below acts, so the lower plate 4 is less likely to be distorted and no bulge occurs downward. Particularly, this is effective when the lower plate side surface covering portion 4b is not provided on the lower plate 4.

[0042] Furthermore, it is possible to omit or reduce the location where burring processing or the like is performed to press and deform the joint portion 30 and join it to the core material 2 or the lower plate 4, and the distortion of the lower plate 4 can be further suppressed. By providing the reinforcing rib 32, the strength of the peripheral portion of the floor panel, particularly the resistance to deflection, is increased.

[0043] The joint portion 30 is subjected to a folding process (so-called hemming process) in which a folded piece 30a is folded further toward the upper surface side toward the outside of the floor panel 1.

[0044] At the corner portion 1b of the floor panel 1, the upper plate 3 is bent along the rising core portion 2f of the core material 2 continuously from the upper surface covering portion 3a to form a rising covering portion 3f that covers the rising core portion 2f, and is bent along the stepped core portion 2e continuously from the rising covering portion 3f to form a stepped covering portion 3e that covers the stepped core portion 2e, and is bent along the chamfered core portion 2d continuously from the stepped covering portion 3e to form a chamfered covering portion 3g that covers the chamfered core portion 2d, and a corner joint portion 31 that is bent along the lower surface of the lower plate 4 continuously from the chamfered covering portion 3g and is overlapped and joined to the lower surface of the lower plate 4.

[0045] The chamfered portion 20 of the floor panel 1 is composed of the chamfered core portion 2d of the core material 2 and the chamfered covering portion 3g of the upper plate 3, the stepped portion 21 is composed of the stepped core portion 2e of the core material 2 and the stepped covering portion 3e of the upper plate 3, and the rising portion 22 is composed of the rising core portion 2f of the core material 2 and the rising covering portion 3f of the upper plate 3.

[0046] Regarding the portion where the corners of the core material 2 are formed as described above, since the upper plate 3 and the lower plate 4 are formed and covered by bending, the filling rate of the core material 2 between the upper plate 3 and the lower plate 4 can be increased, which is particularly effective when manufacturing the floor panel 1 by covering the already formed core material 2 such as particle board.

[0047] The corner joint portion 31 is subjected to a folding process (so-called hemming process) in which a folded piece 31a is folded further toward the upper surface side toward the outside of the floor panel 1. At both ends (Fig. 2) of the corner joint portion 31 of each corner portion 1b, through holes 12 are formed in the upper plate 3 in the folded portion, through holes 13 corresponding to the through holes 12 are formed in the lower plate 4, and the upper plate 3 and the lower plate 4 are deformed by driving a burring pin from below the through holes 12 and biting into the lower portion of the core material 2 to join the corner joint portion 31 to the lower plate 4 (formation of a deformed joint portion) (Fig. 4).

[0048] Since the corner joint portion 31 is deformed by being pressed by the upper plate 3 and the lower plate 4 from below and is joined to the lower plate 4, no portion protruding downward is generated on the lower surface of the corner joint portion 31. Even if the upper one of the stacked floor panels 1 is displaced, it will not get caught and the corner joint portion 31 will not be damaged. Also, no separate joining tool is required and joining can be easily performed.

[0049] Further, since the corner joint portion 31 is deformed by being pressed by the upper plate 3 and the lower plate 4 from below and bites into the lower part of the core material 2 and is joined to the lower plate 4, the upper plate 3 and the lower plate 4 are less likely to peel off and a strong structure can be achieved.

[0050] Furthermore, the corner joint portion 31 is provided with a through hole 12. Since the corner joint portion 31 is deformed by being pressed by the upper plate 3 and the lower plate 4 from below the through hole 12 and is joined to the lower plate 4, it is easy to position the pressing tool, and it is also easy to deform and join efficiently.

[0051] The upper plate 3 is provided with a regulating recess 11 formed on the upper surface. Specifically, on the upper surface of the floor panel 1, at the center positions of the four divided areas divided by the vertical and horizontal center lines, regulating recesses 11 engageable with the regulating protrusions 10 formed on the lower surface of the floor panel 1 are respectively formed. The shape of the recess of the regulating recess 11 is such that it can accommodate a part of the regulating protrusion 10.

[0052] As shown in FIG. 3, the back surface 110 of the regulating recess 11 is formed in close contact with a hole portion 111 provided on the upper surface of the core material 2. Specifically, at positions corresponding to the regulating protrusions 10, by being pressed from above the upper plate 3 with a pressing tool (not shown), the regulating recess 11 of the upper plate 3 and the hole portion 111 of the core material 2 are formed, and the back surface 110 of the regulating recess 11 and the hole portion 111 of the core material 2 are in close contact.

[0053] Since the back surface 110 of the restricting recess 11 is formed in close contact with the hole 111 provided in the upper surface of the core material 2, the restricting recess 11 is difficult to deform. Also, by pressing from above the upper plate 3, the restricting recess 11 and the hole 111 can be formed simultaneously, and there is no need to align the positioning and the hole 111 during manufacturing.

[0054] The lower plate 4 has a restricting projection 10 engageable with the restricting recess 11 on the lower surface of the lower plate 4. Specifically, on the lower surface of the floor panel 1, at the center positions of the four divided areas divided by the vertical and horizontal center lines at the position corresponding to the restricting recess 11, the lower plate 4 protrudes downward to form the restricting projections 10.

[0055] The protruding length of the restricting projection 10 is longer than the height of the reinforcing rib 32 formed by the upper plate side surface extension 3c and the upper plate side surface folded-back portion 3d, and is longer than the sum of the height of the reinforcing rib 32 and the depth of the restricting recess 11. Specifically, the protruding length of the restricting projection 10 from the lower surface of the flat portion of the lower plate 4 is longer than the distance from the lower surface of the flat portion of the lower plate 4 to the lower end of the reinforcing rib 32, and is further formed to be longer than the sum of the height of the reinforcing rib 32 and the distance from the upper surface of the flat portion of the upper plate 3 to the bottom of the restricting recess 11.

[0056] If the protruding length of the restricting projection 10 is longer than the height of the reinforcing rib 32, even if there is a case where the restricting projection 10 and the restricting recess 11 are stacked without being engaged, the reinforcing rib 32 will not contact the upper surface of the lower floor panel, and damage to the joint portion 30 and the reinforcing rib 32 can be prevented.

[0057] Also, if the protruding length of the restricting projection 10 is longer than the sum of the height of the reinforcing rib 32 and the depth of the restricting recess 11, when the restricting projection 10 and the restricting recess 11 are engaged and stacked, the reinforcing rib 32 will not contact the upper surface of the lower floor panel 1, and damage to the reinforcing rib 32 and the joint portion 30 can be prevented.

[0058] When a plurality of floor panels 1 are stacked before laying or during transportation, the regulating convex portions 10 and the regulating concave portions 11 of the vertically overlapping floor panels 1 engage with each other to restrict movement, so there is no worry of displacement.

[0059] Also, even if the overlapping floor panels 1 are displaced, the joint portions 30 and the reinforcing ribs 32 of the upper plate 3 overlap the lower surface of the lower plate 4, and the regulating convex portions 10 also protrude from the lower surface of the lower plate 4, so there is no worry that the regulating convex portions 10 will hit the tip surface of the joint portion 30 of the upper plate 3 and peel off. The moving joint portions 30 and the reinforcing ribs 32 will move on the upper surface of the lower floor panel 1 without the regulating convex portions 10, and the joint portion 30 will not collide with the regulating convex portions 10, so it is possible to prevent the joint portion 30 from being damaged and the upper plate 3 from peeling off from the lower plate 4.

[0060] Even when a plurality of floor panels 1 are stacked, the regulating concave portions 11 are not deformed because the back surfaces 110 are in close contact with and supported by the upper surfaces of the hole portions 111. Since a plurality (four each in this embodiment) of regulating convex portions 10 and regulating concave portions 11 are formed, relative rotation between the overlapping floor panels 1 can also be prevented.

[0061] The floor panel 1 is manufactured, for example, as follows. The regulating convex portions 10 are formed on the lower plate 4 by pressing with a pressing member (not shown).

[0062] Next, the lower surface 2b of the core material 2 is covered with the lower surface covering portion 4a of the lower plate 4. The lower surface 2b of the core material 2 and the lower surface covering portion 4a of the lower plate 4 may be adhered with an adhesive or the like. The lower plate side surface covering portion 4b of the lower plate 4 is bent along the side surface 2c of the core material 2. There is sufficient core material 2 at the corner portions for bending.

[0063] Next, the upper surface 2a of the core material 2 is covered with the upper surface covering portion 3a of the upper plate 3. The upper surface 2a of the core material 2 and the upper surface covering portion 3a of the upper plate 3 may be adhered with an adhesive or the like. The outer peripheral end portions of the upper plate 3 are folded back to the back surface side to form folded pieces 30a, 31a.

[0064] Press the upper surface covering portion 3a of the upper plate 3 from above with a pressing tool (not shown) to form the restricting recess 11 of the upper plate 3 and the hole portion 111 of the core material 2.

[0065] Regarding the formation of the corner portion 1b, the portion of the upper plate 3 that forms the corner portion 1b is pressed and bent from above, and the rising core portion 2f, the stepped core portion 2e, and the chamfered core portion 2d of the core material 2 are covered with the rising covering portion 3f, the stepped covering portion 3e, and the chamfered covering portion 3g of the upper plate 3. The rising core portion 2f of the core material 2 and the rising covering portion 3f of the upper plate 3, the stepped core portion 2e and the stepped covering portion 3e, and the chamfered core portion 2d and the chamfered covering portion 3g may be adhered with an adhesive or the like.

[0066] Bend the rising covering portion 3f of the upper plate 3 along the rising core portion 2f of the core material 2, bend the stepped covering portion 3e along the stepped core portion 2e, and bend the chamfered covering portion 3g along the chamfered core portion 2d. Then, the corner joint portion 31 where the folded piece 31a is folded and subjected to folding processing is bent along the lower surface covering portion 4a and overlapped on the lower surface of the lower plate 4. The core material 2 also sufficiently exists at each corner portion for bending processing.

[0067] Also, the core material sufficiently exists at the portions where the corners in the plan view of the floor panel 1 are formed, such as the portion where the side surface 2c of the core material 2 intersects with the chamfered core portion 2d and the portion where the side surface 2c intersects with the rising core portion 2f.

[0068] Perform a so-called flanging process of pressing and deforming the corner joint portion 31 from below with a pressing tool (not shown) and join it to the lower plate 4. The through hole 12 of the upper plate 3 and the through hole 13 of the lower plate 4 may be provided simultaneously with the flanging process or may be provided in advance.

[0069] Note that the joining process of the corner joint portion 31 and the lower plate 4 and the formation process of the restricting recess 11 of the upper plate 3 may be performed repeatedly. By repeatedly performing the joining process of the corner joint portion 31 and the lower plate 4 where pressing is performed from below and the formation process of the restricting recess 11 of the upper plate 3 where pressing is performed from above, the space of the processing machine can be effectively utilized and the man-hours can be reduced.

[0070] To form edge portion 1a, as shown in Figure 5, a side pressing tool P1 is brought close to the side of core material 2 to press and bend the portion of upper plate 3 that protrudes from core material 2, and the end portion of upper plate 3 is folded downward, so that upper plate side surface covering portion 3b of upper plate 3 covers side surface 2c of core material 2 from outside lower plate side surface covering portion 4b.

[0071] The lower pressing tool P2 is brought close to the lower plate 4 from below and pressed against it, so that the portion extending downward from the upper plate side covering portion 3b is folded inwardly of the floor panel 1. At this time, by leaving a gap L between the inner surface P1a of the side pressing tool P1 and the side surface P2a of the lower pressing tool P2, the portion extending downward from the upper plate side surface covering portion 3b enters the gap L, and an upper plate side surface extension portion 3c that extends continuously downward from the upper plate side surface covering portion 3b is formed, and by pushing up with the lower pressing tool P2, the upper plate side surface fold portion 3d is folded back continuously from the upper plate side surface extension portion 3c along the upper plate side surface extension portion 3c to form a reinforcing rib 32, and further, the upper end of the upper plate side surface fold portion 3d is folded continuously along the lower surface covering portion 4a to form a joint 30.

[0072] The joint portion 30 is pressed firmly by the lower pressing tool P2 so as to come into intimate contact with the lower plate 4, and is joined to the lower plate 4 by being pressed and supported from below by the upper plate side folded portion 3d. If a raised portion P2b is provided on a portion of the lower pressing tool P2 that is not pressing the joint 30, the raised portion P2b can also suppress downward bulging of the lower plate 4.

[0073] The joining process between the joint portion 30 and the lower plate 4 and the process of forming the regulating recess 11 in the upper plate 3 may be performed in an overlapping manner. By performing the joining process between the joint portion 30 and the lower plate 4 by pressing from below and the process of forming the regulating recess 11 in the upper plate 3 by pressing from above in an overlapping manner, the space of the processing machine can be effectively utilized and the number of steps can be reduced.

[0074] Note that the process of forming the corner portion 1b and the process of forming the side portion 1a may be performed simultaneously or sequentially. Also, only some of the processes in the process of forming the corner portion 1b and the process of forming the side portion 1a may be wrapped and performed.

[0075] As shown in FIGS. 6 and 7, the floor support structure for supporting the floor panel 1 has a plurality of floor panels 1 arranged above the floor slab 5 and supported by floor panel supports 6. A number of floor panel supports 6 are erected on the floor slab 5, and the corner portions 1b of four floor panels 1 are butted against each other and supported by the floor panel supports 6. A wiring accommodation space 7 for arranging cables or the like is formed between the floor slab 5 and the laid floor panel 1.

[0076] The floor panel support 6 includes a support leg 60, a support base 61, a pressing plate 62, and a lock screw 63. The support leg 60 has a screw shaft 600 and a base 602 that is placed on the floor slab 5 and directed toward the lower end of the screw shaft 600.

[0077] The support base 61 includes a cylindrical nut 610 screwed onto the upper part of the screw shaft 600, a pedestal 611 provided so as to project from the outer periphery of the cylindrical nut 610, and a receiving base 612 attached to the pedestal 611.

[0078] By rotating the cylindrical nut 610 with respect to the screw shaft 600, the length of the floor panel support 6 can be adjusted and the height of the support base 61 can be adjusted. Also, after adjusting the height, it can be fixed with a set screw 616 provided on the cylindrical nut 610.

[0079] The receiving base 612 is pre-fitted and attached to the pedestal 611. The receiving base 612 is made of, for example, synthetic resin and has a plane that is slightly larger than the pedestal 611. The floor panel support 6 is made of, for example, metal except for the receiving base 612.

[0080] As shown in FIGS. 8 and 9, a nut portion 614 projects from the center of the upper surface of the pedestal 612, and four partition walls 615 are radially formed from the outer peripheral surface of the nut portion 614, dividing the upper surface of the pedestal 612 into four sections.

[0081] On the upper surface of the pedestal 612, accommodation grooves 618 are formed along both side surfaces of each partition wall 615 and the outer peripheral surface of the nut portion 614. The depth of the accommodation groove 618 is greater than the protruding length from the lower surface of the lower surface covering portion 4a to the lower end of the reinforcing rib 32.

[0082] FIG. 6(b) is a cross-sectional view of a main part of the floor panel support structure showing a portion of the accommodation groove 618 formed along the nut portion 614, and FIG. 6(c) is a cross-sectional view of a main part of the floor panel support structure showing a portion of the accommodation groove 618 formed along the partition wall 615. The width of the accommodation groove 618 formed along both side surfaces of the partition wall 615 is wider than the sum of the width of the joint portion 30 and the width of the reinforcing rib 32 (FIG. 6(c)). The width of the accommodation groove 618 formed along the outer peripheral surface of the nut portion 614 is formed wider than the distance from the intersection of the lines extending two adjacent peripheries of the floor panel 1 to the inner end of the corner joint portion 31 (FIG. 6(b)).

[0083] Also, a peripheral wall 617 is formed along the outer peripheral edge of the lower surface of the pedestal 612, and a plurality (four in the example shown in the figure) of hook portions 613 are provided at equal intervals in the circumferential direction at the lower end portion of the inner peripheral surface of the peripheral wall 617. By covering the upper surface of the pedestal 611 with the pedestal 612 and engaging the hook portion 613 of the pedestal 612 with the lower surface of the pedestal 611, the pedestal 612 is disposed above the support leg 60.

[0084] The pressing plate 62 has substantially the same thickness as the depth of the step portion 21 (the height of the rising portion 22), and the outer shape of the pressing plate 62 is a quadrangle slightly smaller than the outer shape formed by the step portions 21 of the four floor panels 1.

[0085] At the center of the pressing plate 62, a screw hole 620 for inserting the lock screw 63 is formed, and a recess 621 for fitting the head of the lock screw 63 is formed on the upper surface around the screw hole 620. Further, a plurality (for example, four) of engaging claws 631 are formed in the circumferential direction on the lower neck part of the lock screw 63 so as to contact the lower surface of the screw hole 620 and engage with the pressing plate 62.

[0086] To construct the floor, as shown in Fig. 6(a), a base 602 is fixed on the floor slab 5 and a number of support legs 60 are erected. The distance between the central axes of the support legs 60 is made approximately equal to the length of one side of the floor panel 1. The length of the support legs 60 is adjusted in advance according to the height of the required wiring accommodation space 7 to adjust the height of the support base 61.

[0087] Next, as shown in Fig. 7, on the upper surface of the receiving base 612, the corner portions 1b of the four floor panels 1 divided by the partition wall 615 are placed respectively, and the four floor panels 1 are arranged in a state where the corner portions 1b are joined together. As shown in Figs. 6(b)(c), the reinforcing ribs 32, the joint portions 30 and the corner joint portions 31 of the floor panel 1 are accommodated in the accommodation grooves 618 of the receiving base 612.

[0088] A square through hole is formed by the chamfered portions 20 of the four floor panels 1, and the nut portion 614 is arranged in this through hole. The stepped portions 21 of the four butted floor panels 1 have a square outer shape (Fig. 7).

[0089] Next, as shown in Figs. 6(a) and 7, the pressing plate 62 is fitted onto the stepped portion 21 having a square outer shape. Since the rising portion 22 is inclined so that the upper part is away from the stepped portion 21, the pressing plate 62 is guided by the rising portion 22 and easily fitted onto the stepped portion 21.

[0090] After that, a lock screw 63 is screwed into the nut portion 614 through the screw hole 620 of the fitted pressing plate 62. The engaging claw 631 passes through the screw hole 620 and the lock screw 63 engages with the pressing plate 62, and the pressing plate 62 presses the stepped portion 21. As a result, the corner portions 1b of the four floor panels 1 are sandwiched between the support base 61 and the pressing plate 62 and are stably laid. Incidentally, after inserting the lower neck portion of the lock screw 63 through the screw hole 620 of the pressing plate 62 and engaging the engaging claw 631 with the screw hole 620, it may be screwed into the nut portion 614.

[0091] The rising portion 22 is linear in plan view, and since the corner portion 1b of another floor panel 1 abuts and is arranged and is fitted with one side of the pressing plate 62 that presses the stepped portion 21, when the lock screw 63 is screwed, the pressing plate 62 is restricted and does not rotate idly, and the floor panel 1 can be reliably supported.

[0092] As shown in FIGS. 6(b) and 6(c), the receiving groove 618 of the receiving base 612 has a width and depth sufficient to accommodate the reinforcing rib 32, the joint portion 30, and the corner joint portion 31 of the floor panel 1. Therefore, the flat lower surface covering portion 4a of the floor panel 1 is placed on the upper surface 612a of the receiving base 612 where the receiving groove 618 is not formed, and the floor panel 1 does not rattle.

[0093] In addition, since the receiving groove 618 engages with the reinforcing rib 32, the joint portion 30, and the corner joint portion 31, the horizontal movement of the floor panel 1 is suppressed.

[0094] Also, a stepped core portion 2e of the core material 2 exists below the stepped covering portion 3e of the upper plate 3 that constitutes the stepped portion 21, and further below that, there are the corner joint portion 31 of the upper plate 3 and the lower plate 4. That is, a core material 2 exists between the upper plate 3 and the lower plate 4 of the portion of the stepped portion 21 that is pressed by the pressing plate 62 and supported and sandwiched by the support base 61, increasing the strength and improving the deformation performance. In other words, since the core material 2 is built into the corner portion 1b of the floor panel 1 sandwiched between the support base 61 and the pressing plate 62, the strength is high and it is difficult to deform even when a strong load is applied. Also, at the corner 1b of the floor panel 1, since the upper plate 3 is joined to the lower plate 4 by burring, it is difficult to be peeled off even by the force in the shearing direction.

[0095] The floor panel 1 may be supported from below by a bundle erected on the floor slab 5 at an appropriate position excluding the corner 1b.

[0096] Also, the pressing plate 62 has substantially the same thickness as the rising portion 22 of the stepped portion 21, and a recess 621 for fitting the head of the lock screw 63 is formed around the screw hole 620 of the pressing plate 62, so that the upper surface of the floor is finished smoothly. Finally, a finishing material such as a carpet is installed on the upper surface of the laid floor panel 1.

[0097] [Second Embodiment] Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 10 to 12. Note that the description of the same parts as those in the first embodiment will be omitted, and mainly the different parts will be described.

[0098] In the present embodiment, as shown in FIGS. 10 and 11, a substantially rectangular notch 14 is formed at the center of a pair of opposing side edges of the floor panel 1. The notch 14 is used for pulling out the cable wired in the wiring accommodation space 7 above the floor panel 1.

[0099] A notch step portion 15 is formed on the upper surface along the periphery of the notch 14. The notch step portion 15 is formed about 4 to 5 mm lower than the upper surface of the floor panel 1. A notch rising portion 16 continuous with the notch step portion 15 is formed from the upper surface of the floor panel 1.

[0100] As shown in FIG. 12, the core material 2 includes a notch core portion 2g notched in a square corresponding to the notch 14, a notch step core portion 2h formed continuously from the notch core portion 2g, and a notch rising core portion 2i rising parallel to the notch core portion 2g from the notch step core portion 2h toward the upper surface 2a. The portion corresponding to the notch 14 of the lower plate 4 is notched to be slightly larger than the notch 14 and is formed so as not to cover the notch core portion 2g.

[0101] The upper plate 3 is notched into a quadrilateral smaller than the notch 14 corresponding to the notch 14. The portion of the upper plate 3 that protrudes beyond the notch 14 is continuously bent from the upper surface covering portion 3a to form a notch rising covering portion 3h that covers the notch rising core portion 2i of the core material 2, and is continuously bent from the notch rising covering portion 3h to form a notch step covering portion 3i that covers the notch step core portion 2h, and is continuously bent from the notch step covering portion 3i to form a notch covering portion 3j that covers the notch core portion 2g, and a notch joint portion 33 is formed that is continuously bent along the lower surface of the lower plate 4 from the notch covering portion 3j and is overlapped and joined to the lower surface of the lower plate 4.

[0102] The tip of the notch joint portion 33 is further subjected to a folding process (so-called hemming process) in which a folded piece 33a is folded into the upper surface side.

[0103] At both ends of each side of the notch 14 and at one location approximately in the middle of each side, through holes 12 are formed in the upper plate 3 in the folded portion of the notch joint portion 33, through holes 13 corresponding to the through holes 12 are formed in the lower plate 4, and the upper plate 3 and the lower plate 4 are deformed by driving a burring pin from below the through holes 12 and biting into the lower part of the core material 2 to join the corner joint portion 31 to the lower plate 4.

[0104] At both circumferential ends of the notch 14, the end of the notch joint portion 33 and the end facing the notch 14 of the joint portion 30 of the side portion 1a are overlapped, and the through hole 12 of the notch joint portion 33 and the through hole 12 of the joint portion 30 are aligned to perform burring (formation of a deformed joint portion).

[0105] [Third Embodiment] Hereinafter, a third embodiment of the present invention will be described with reference to FIG. 13. Note that the description of the same parts as in the first and second embodiments will be omitted, and mainly the different parts will be described.

[0106] In this embodiment, different from adding both ends of the corner joint 31, burring is also performed on both ends in the length direction of the joint 30. Through holes 12 are formed at both ends in the length direction of the joint 30, and burring pins are driven into the through holes 12 and the through holes 13 of the lower plate from below to deform, and both ends of the joint 30 of the upper plate 3 are joined to the lower plate 4 and the core material 2 (formation of a deformed joint).

[0107] Both ends in the length direction of the joint 30 to be burr-processed may or may not form the reinforcing ribs 32.

[0108] [Fourth Embodiment] Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG. 14. Note that descriptions of parts similar to those in the first to third embodiments will be omitted, and mainly different parts will be described.

[0109] This embodiment has substantially the same configuration as the second embodiment. However, as shown in FIG. 14, burring is performed not only on both ends of the corner joint 31 but also on both ends of the joint 30 of the side portion 1a, and the joint 30 is deformed and joined to the lower plate 4 (formation of a deformed joint).

[0110] [Fifth Embodiment] Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. 15. Note that descriptions of parts similar to those in the first to fourth embodiments will be omitted, and mainly different parts will be described.

[0111] This embodiment has substantially the same configuration as the third embodiment. However, as shown in FIG. 15, different from both ends of the corner joint 31 and both ends of the joint 30, burring is also performed at the center in the length direction of the joint 30 of the side portion 1a. Burring pins are driven into the through holes 12 of the joint 30 and the through holes 13 of the lower plate 4 at the center in the length direction of the joint 30 of the side portion 1a from below, and the periphery of the through holes 12 and 13 is deformed to join the joint 30 to the lower plate 4 (formation of a deformed joint).

[0112] [Sixth Embodiment] Hereinafter, a sixth embodiment of the present invention will be described with reference to FIG. 16. Note that the description of the same parts as those in the first to fifth embodiments will be omitted, and mainly the different parts will be described.

[0113] The sixth embodiment is similar to the fourth embodiment. However, as shown in FIG. 16, in a pair of opposing peripheries where the notch portion 14 of the floor panel 1 is not formed, burring is performed at the center in the length direction of the joint portion 30, and the joint portion 30 of the upper plate 3 is deformed and joined to the lower plate 4 (formation of a deformed joint portion).

[0114] [Other Modification Examples] The present invention is not limited to the above-described embodiments. For example, the following are also included.

[0115] In this embodiment, the core material is a woody material such as particle board, but it may be lightweight concrete or the like.

[0116] In this embodiment, the floor panel is quadrilateral, but it may be other angular shapes, and depending on the shape, the number of sheets laid with the corners butted together is also changed.

[0117] The structure of the floor panel support tool that supports the corners of the floor panels arranged with the corners butted together is not limited to that described in this embodiment. As an example, it may be such that a pressing plate snaps into engagement with the upper end of the support leg.

[0118] In this embodiment, through holes are provided in the joint portion, corner joint portion, or notch joint portion of the upper plate, and through holes are provided in the lower plate. However, the present invention is not limited to this. It may be deformed and joined while forming through holes by a pressing tool without providing through holes in both the upper plate and the lower plate, or it may be deformed and joined by providing through holes in either the upper plate or the lower plate.

[0119] In this embodiment, the protruding length of the regulating convex portion was longer than the sum of the thickness of the joint portion and the depth of the regulating concave portion, but it is not limited thereto. As long as the protruding length of the regulating convex portion is longer than the thickness of the joint portion, it may be shorter than the sum of the thickness of the joint portion and the depth of the regulating concave portion.

[0120] In this embodiment, the corner joint portion and the notch joint portion are joined to the lower plate by burring, but they can also be joined to the lower plate by pressing and deforming them with a lower pressing tool without driving in burring pins. In this case, reinforcing ribs may be formed continuously on the outer peripheral sides of the corner joint portion and the notch joint portion, similar to the side portions.

[0121] In this embodiment, the reinforcing ribs, the joint portion, and the corner joint portion are accommodated in the accommodation groove, but it may be such that only the reinforcing ribs are accommodated.

[0122] In this embodiment, no reinforcing ribs were formed at the corners of the floor panel, but it may be used in combination with a method of joining by pressing and deforming the upper plate and the lower plate by burring or the like.

[0123] Each technical matter in any embodiment including the modified example may be applied to other embodiments as an example.

Explanation of Reference Numerals

[0124] 1 Floor panel 1a Side portion 1b Corner portion 10 Regulating convex portion 11 Regulating concave portion 110 Back surface 111 Hole portion 12, 13 Through hole 14 Notch portion 15 Notch step portion 16 Notch rising portion 2 Core material 2a Upper surface 2b Lower surface 2c Side surface 2d Chamfered core portion 2e Segment core 2f Rising core 2g Notched core 2h Notched segment core 2i Notched rising core 20 Chamfered part 21 Step part 22 Rising part 3 Upper plate 3a Upper surface covering part 3b Side surface covering part of upper plate 3c Side surface extension part of upper plate 3d Side surface folding part of upper plate 3e Step covering part 3f Rising covering part 3g Chamfered covering part 3h Notched rising covering part 3i Notched step covering part 3j Notched covering part 30 Joint part 31 Corner joint part 32 Reinforcing rib 33 Notched joint part 4 Lower plate 4a Lower surface covering part 4b Side surface covering part of lower plate 5 Floor slab 6 Floor panel support 60 Support leg 600 Screw shaft 602 Base 61 Support base 610 Cylindrical nut 611 Pedestal 612 Receiving base 613 Hook part 614 Nut part 615 Partition wall 616 Set screw 617 Peripheral wall 618 Accommodation groove 62 Pressing plate 620 Screw hole 621 Concave part 63 Locking screw 631 Engaging claw 7 Wiring accommodation space P1 Side pressing tool Lower presser of P2

Claims

1. A floor panel comprising a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material, wherein the core material has side surfaces rising vertically from the lower surface, the lower plate has a lower surface covering portion covering the lower surface of the core material, the upper plate includes an upper surface covering portion covering the upper surface of the core material, an upper plate side surface covering portion formed by bending continuously from the upper surface covering portion along the side surface to cover the side surface, an upper plate side surface extension portion extending downward continuously from the upper plate side surface covering portion, an upper plate side surface folding portion formed by folding back continuously from the upper plate side surface extension portion along the upper plate side surface extension portion, and a joint portion formed by bending continuously from the upper plate side surface folding portion along the lower surface covering portion and overlapping and joined to the lower surface of the lower plate. A floor panel characterized by the above.

2. The upper plate has a regulating recess formed on the upper surface of the upper plate, the lower plate has a regulating projection engageable with the regulating recess on the lower surface of the lower plate, the protruding length of the regulating projection is longer than the height of a reinforcing rib formed by the upper plate side surface extension portion and the upper plate side surface folding portion. The floor panel according to claim 1, characterized by the above.

3. The protruding length of the regulating projection is longer than the sum of the height of the reinforcing rib and the depth of the regulating recess. The floor panel according to claim 2, characterized by the above.

4. The joint portion has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below with a pressing tool and is joined to the lower plate. The floor panel according to any one of claims 1 to 3, characterized by the above.

5. The joint portion has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below with a pressing tool and bites into the lower part of the core material and is joined to the lower plate. The floor panel according to any one of claims 1 to 3, characterized by the above.

6. The joint portion is provided with a through hole, and has a deformed joint portion that is deformed by pressing the upper plate and the lower plate from below the through hole with a pressing tool and bites into the lower part of the core material and is joined to the lower plate. The floor panel according to any one of claims 1 to 3, characterized by the above.

7. A floor panel support structure for supporting a floor panel comprising a core material, an upper plate covering the upper surface of the core material, and a lower plate covering the lower surface of the core material, with a floor panel support tool, wherein the floor panel is the core material has side surfaces rising vertically from the lower surface, The lower plate has a lower covering portion that covers the lower surface of the core material. The upper plate includes an upper covering portion that covers the upper surface of the core material, an upper plate side covering portion that is continuously bent along the side surface from the upper covering portion to cover the side surface, an upper plate side extension portion that continuously extends downward from the upper plate side covering portion, an upper plate side folding portion that is continuously folded along the upper plate side extension portion from the upper plate side extension portion, and a joining portion that is continuously bent along the lower covering portion from the upper plate side folding portion and is joined by overlapping on the lower surface of the lower plate. The floor panel support has a receiving base on which the floor panel is placed. The receiving base is provided with a receiving groove. The upper plate side extension portion and the upper plate side folding portion are accommodated in the receiving groove. A floor panel support structure characterized by the above.

8. The joining portion is accommodated in the receiving groove. The floor panel support structure according to claim 7, characterized by the above.

9. A floor panel support for supporting a floor panel including a core material, an upper plate that covers the upper surface of the core material, and a lower plate that covers the lower surface of the core material, wherein the floor panel the core material has a side surface that rises vertically from the lower surface, the lower plate has a lower covering portion that covers the lower surface of the core material, the upper plate includes an upper covering portion that covers the upper surface of the core material, an upper plate side covering portion that is continuously bent along the side surface from the upper covering portion to cover the side surface, an upper plate side extension portion that continuously extends downward from the upper plate side covering portion, an upper plate side folding portion that is continuously folded along the upper plate side extension portion from the upper plate side extension portion, and a joining portion that is continuously bent along the lower covering portion from the upper plate side folding portion and is joined by overlapping on the lower surface of the lower plate. The lower surface of the joining portion protrudes below the lower surface of the lower plate where the joining portion does not overlap. The floor panel support has a receiving base on which the floor panel is placed. The receiving base is provided with a receiving groove capable of accommodating the upper plate side extension portion and the upper plate side folding portion. The floor panel support, wherein the receiving groove is further capable of accommodating the joining portion.

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