JP2023151106A - Floor panel - Google Patents

Abstract

To provide a floor panel which secures a filling ratio of a core material, has high strength, is hard to shift when stacked, and is hardly damaged in case of shifting.SOLUTION: A panel floor includes core material 2, an upper plate 3 and a lower plate 4, wherein the core material 2 has an upper surface 2a, a lower surface 2b and a side surface 2c erected vertically from the lower surface 2b, the lower plate 4 has a covering part 4a covering the lower surface 2b of the core material 2, a lower plate side covering part 4b consecutively bent from the lower covering part 4a to cover at least a part of the side surface 2c, and the upper plate 3 includes an upper covering part 3a covering the upper surface 2a of the core material 2, an upper plate side surface covering part 3b consecutively bent from the upper covering part 3a to cover the side surface 2c, and a junction part 30 consecutively bent from the upper plate side surface covering part 3b to be overlapped and connected on a lower surface of the lower plate 4.SELECTED DRAWING: Figure 3

Description

The present invention relates to a floor panel suitable for being installed above a floor slab to form a double floor.

Offices, etc. that use a large number of OA equipment often have double floors.
Such a double floor has a large number of support legs erected on the floor slab, supports the corners of the floor panel with the support legs, and forms a wiring space between the floor slab and the floor panel. Cables are routed in this wiring space.

Conventionally, as a floor panel used for a double floor, Patent Document 1 discloses that a recess is formed by a metal lower plate, and a peripheral edge part of the recess is made to project from the upper part of the peripheral wall in a flange shape. A floor panel is disclosed in which a metal upper plate is superimposed and bonded and fixed, and a recess between the upper plate and the lower plate is filled with a filler such as mortar.
Furthermore, in Patent Document 2, in a floor panel in which an inorganic material is arranged between a front plate and a back plate made of a steel plate, a corner flange is provided with a flat surface in order to engage a fixture for fixing it to a support leg. It is disclosed that a step portion having an arcuate shape when viewed is formed.

Japanese Patent Application Publication No. 2010-265600 Japanese Patent Application Publication No. 2012-225046

For these floor panels, a drawing process is used to form the recesses in a single bottom plate. Drawing processing results in a large amount of waste after processing, resulting in poor yield. Further, in the drawing process, a radius is created inside the continuous portion between the bottom surface of the lower plate and the peripheral wall of the recess rising from the bottom surface. If such a radius occurs, when a pre-formed core material such as particle board is placed inside the recess, the radius becomes an obstacle and creates a space between the peripheral wall of the recess and the core material, reducing the filling rate. However, the strength will decrease. Furthermore, due to the creation of a space, there will be a portion on the side of the panel where the load is supported only by the steel plate, reducing the strength of the panel at the side.

In the floor panel described in Patent Document 1, the corners of the flange portion are supported by pillars, but the corners, which are easily subjected to loads, are not filled with filler material, so the strength is insufficient and deformation occurs. It's easy to do.

In order to form the arcuate stepped portion at the corner of the floor panel as described in Patent Document 2, drawing is used, but the same problem as described above occurs in this portion as well.

Furthermore, since the upper and lower surfaces of the floor panels are smooth, if they are stacked before installation or during transportation, they tend to slip and shift, which may cause the load to collapse.

The problem to be solved by the present invention is to provide a floor panel and floor structure that secures the filling rate of the core material, has high strength, is hard to shift when stacked, and is hard to be damaged even if it shifts.

The invention according to claim 1 of the present application is a floor panel comprising 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 core material is , the lower plate has a side surface rising perpendicularly from the lower surface, and the lower plate includes a lower surface covering portion that covers the lower surface of the core material, and a bending process is performed continuously from the lower surface covering portion along the side surface to form the side surface. a lower plate side covering portion that covers at least a portion of the core material, and the upper plate is folded continuously from the upper surface covering portion and along the side surface. An upper plate side covering part that is processed and covers the side surface, and a joint that is folded continuously from the upper plate side covering part and along the lower surface covering part and is overlapped and joined to the lower surface of the lower plate. and a regulating recess formed on the upper surface of the upper plate, and the lower plate has a regulating protrusion on the lower surface of the lower plate that can engage with the regulating recess. It is a panel.

The invention according to claim 2 of the present application is a floor panel comprising 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 core material is , the lower plate has a side surface rising perpendicularly from the lower surface, and the lower plate includes a lower surface covering portion that covers the lower surface of the core material, and a bending process is performed continuously from the lower surface covering portion along the side surface to form the side surface. a lower plate side covering portion that covers at least a portion of the core material, and the upper plate is folded continuously from the upper surface covering portion and along the side surface. An upper plate side covering part that is processed and covers the side surface, and a joint that is folded continuously from the upper plate side covering part and along the lower surface covering part and is overlapped and joined to the lower surface of the lower plate. This is a floor panel characterized by comprising: and.

In the invention according to claim 3 of the present application, the core material includes a chamfered core portion in which a chamfer is formed in a linear shape at a corner portion, and a stepped core portion formed continuously from the chamfered core portion. a rising core part that rises in a straight line parallel to the chamfered core part on the upper surface continuously from the stepped core part; A rising covering portion that is continuously bent from the upper surface covering portion along the rising core portion and covers the rising core portion, and a rising covering portion that is continuously bent from the rising covering portion along the stepped core portion. a stepped covering portion that covers the stepped core portion; a chamfered covering portion that is continuously bent from the stepped covering portion along the chamfered core portion and covers the chamfered core portion; 3. A corner joint portion that is continuously bent from the cut-off covering portion along the lower surface of the lower plate and is overlapped and joined to the lower surface of the lower plate. This is the floor panel described.

In the invention according to claim 4 of the present application, at least one of the joint portion and the corner joint portion is folded so that the tip thereof is further folded toward the outside of the floor panel, and is overlapped with the lower surface of the lower plate. 4. The floor panel according to claim 2 or 3, wherein the floor panel is joined together.

In the invention according to claim 5 of the present application, at least one of the joint portion and the corner joint portion is deformed by pressing the upper plate and the lower plate from below with a pressing tool, and the lower plate and the lower plate are deformed by pressing the upper plate and the lower plate from below. The floor panel according to any one of claims 2 to 4, wherein the floor panel is joined.

In the invention according to claim 6 of the present application, at least either the joint portion or the corner joint portion is deformed by pressing the upper plate and the lower plate from below with a pressing tool, and the core material is deformed by pressing the upper plate and the lower plate from below. The floor panel according to any one of claims 2 to 4, wherein the floor panel is joined to the lower plate by biting into a lower part.

In the invention according to claim 7 of the present application, at least either the joint portion or the corner joint portion is provided with a through hole, and the upper plate and the lower plate are pressed from below the through hole by a pressing tool. The floor panel according to any one of claims 2 to 4, wherein the floor panel is deformed by being bent, bites into a lower part of the core material, and is joined to the lower plate.

The invention according to claim 8 of the present application is a floor panel comprising 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 upper plate is , a joint portion in which a peripheral edge portion of the upper plate is bent below the core material and overlapped and joined to a lower surface of the lower plate; and a regulating recess formed on the upper surface of the upper plate; The lower plate is a floor panel characterized in that the lower plate has a regulating protrusion that can engage with the regulating recess on the lower surface of the lower plate.

The invention according to claim 9 of the present application is the floor panel according to claim 8, wherein a plurality of the restriction convex portions and the plurality of restriction recesses are each formed.

The invention according to claim 10 of the present application is the floor panel according to claim 8 or 9, wherein the protruding length of the regulating convex portion is longer than the thickness of the joint portion.

The invention according to claim 11 of the present application is characterized in that the protrusion length of the restriction convex portion is longer than the sum of the thickness of the joint portion and the depth of the restriction recess. It is a floor panel.

The invention according to claim 12 of the present application is characterized in that the back surface of the regulating recess is formed in close contact with the hole provided on the upper surface of the core material. The floor panel according to item 1.

The invention according to claim 13 of the present application is characterized in that 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. The floor panel according to any one of claims 8 to 12.

In the invention according to claim 14 of the present application, the joint portion 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. The floor panel according to any one of claims 8 to 12, characterized in that:

In the invention according to claim 15 of the present application, the joint portion is provided with a through hole, and is deformed by pressing the upper plate and the lower plate from below the through hole with a pressing tool, and the core material is deformed by pressing the upper plate and the lower plate from below the through hole. The floor panel according to any one of claims 8 to 12, characterized in that the floor panel is joined to the lower plate by biting into a lower part.

The floor panel of the present invention is formed by bending the upper and lower plates that cover the core material without drawing, so if you have a developed diagram, you can easily manufacture it like origami. , the amount of wasted and discarded parts after processing is reduced, and yield efficiency is improved. In addition, compared to drawing, bending can reduce the radius on the inside of the bent part, so when placing a pre-formed core material, such as particle board, in the recess of the lower plate, the gap can be reduced. Since this makes it difficult for the filling rate to occur, the filling rate improves and the strength increases.
In addition, since it has a regulating recess formed on the upper surface of the upper plate and a regulating protrusion that can engage with the regulating recess formed on the lower surface of the lower plate, when the floor panels are stacked together, the regulating protrusion and the regulating recess are formed. The upper and lower floor panels are engaged with each other to restrict movement of the upper and lower floor panels, thereby preventing cargo from collapsing.
Furthermore, since the peripheral edge of the upper plate is bent below the core material and overlapped with the lower surface of the lower plate and the joint part is arranged, there is a regulating convex part on the lower surface of the lower plate. Even if the floor panel shifts, the moving joint will move on the upper surface of the lower floor panel where there is no regulating convexity, and the joint will not collide with the regulating convexity, so the joint will not move. It is possible to prevent the upper plate from being separated from the lower plate due to damage.

The floor panel of the present invention is formed by bending the upper and lower plates that cover the core material without drawing, so if you have a developed diagram, you can easily manufacture it like origami. , the amount of wasted and discarded parts after processing is reduced, and yield efficiency is improved. In addition, compared to drawing, bending can reduce the radius on the inside of the bent part, so when placing a pre-formed core material, such as particle board, in the recess of the lower plate, the gap can be reduced. Since this makes it difficult for the filling rate to occur, the filling rate improves and the strength increases.

In addition, the corners of the core material have a chamfered part formed in a straight line, a stepped part formed continuously from the chamfered part, and a chamfered part continuous from the stepped part on the top surface. The top plate is provided with a rising part that rises in a parallel straight line, and a top covering part that covers the upper surface of the core material, and a top covering part that is continuously bent from the top covering part along the rising part. A rising covering part that covers the raised covering part, a stepped covering part that is continuously bent along the stepped part from the rising covering part and covers the stepped part, and a stepped covering part that is continuously folded from the stepped covering part along the chamfered part. A chamfered covering part that is processed and covers the chamfered part, and a corner part that is continuously bent from the chamfered covering part along the lower surface of the lower plate and overlapped and joined to the lower surface of the lower plate. Since the joint part and the step part are not arcuate but have a simple linear shape, the core material can be easily covered by bending. The filling rate improves in the arrangement of the core material, increasing strength.
In addition, there is a core material below the stepped covering part of the upper plate that is supported and fixed by the support legs, and a lower plate exists further below the core material that exists below the stepped covering part, so it is not supported. A core material is also present at the corner portions where it is fixed or fixed, improving deformation performance.

In addition, at least one of the bent joints or the corner joints of the upper panel is folded back so that the tip is further folded toward the outside of the floor panel, and is overlapped and joined to the lower surface of the lower panel. This prevents injury to the operator's hands and fingers during handling.

In addition, at least either the bent joint or the corner joint of the upper plate is deformed by pressing the upper plate and the lower plate from below with a pressing tool, and is joined to the lower plate. Therefore, there is no downwardly protruding part on the bottom surface of the joint, so even if the overlapping floor panels shift, they will not get caught and the joint will not be damaged. Furthermore, it is possible to easily join without requiring a separate joining tool.

In addition, at least one of the bent joints or the corner joints 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. Since it is joined to the lower plate, the upper plate and lower plate are difficult to separate, resulting in a strong structure.

In addition, at least one of the bent joints and the corner joints of the upper plate is provided with a through hole, and the upper plate and the lower plate are pressed from below the through hole by a pressing tool. Since it is deformed and bit into the lower part of the core material and joined to the lower plate, it is easy to position the pressing tool, and it is also possible to deform and join efficiently.

The floor panel of the present invention has a regulating concave portion formed on the upper surface of the upper plate and a regulating convex portion that can be engaged with a regulating recess formed on the lower surface of the lower plate. The convex portion and the regulating concave portion engage with each other to restrict movement of the upper and lower floor panels, thereby preventing the occurrence of cargo collapse.
In addition, since the peripheral edge of the upper plate is bent below the core material and overlapped with the lower surface of the lower plate and the joint part is arranged, there is a regulating protrusion on the lower surface of the lower plate. Even if the floor panel shifts, the moving joint will move on the upper surface of the lower floor panel where there is no regulating convexity, and the joint will not collide with the regulating convexity, so the joint will not move. It is possible to prevent the upper plate from being separated from the lower plate due to damage.

In addition, by forming a plurality of restriction convex portions and restriction recesses, relative rotation of overlapping floor panels can also be prevented.

In addition, the protruding length of the regulating protrusion is longer than the thickness of the joint, so even if there are times when the regulating protrusion and the regulating recess are stacked without engaging, the joint may be placed on the upper surface of the lower floor panel. This prevents damage to the joints.

In addition, since the protruding length of the regulating protrusion is longer than the sum of the thickness of the joint and the depth of the regulating recess, when the regulating protrusion and the regulating recess are engaged and stacked, the joint may be lowered. There is no contact with the upper surface of the side floor panel, and damage to the joint can be prevented.

In addition, since the back surface of the regulating recess is formed in close contact with the hole provided on the upper surface of the core material, the regulating recess is difficult to deform, and by pressing from above the upper plate, the regulating recess and the hole are The holes can be formed at the same time, and there is no need to align the positioning and the holes during manufacturing.

In addition, since the joint is deformed by pressing the upper and lower plates from below with a pressing tool and joined to the lower plate, there is no downwardly protruding part on the lower surface of the joint, so there is no overlap. Even if the floor panels shift, they will not get caught and the joints will not be damaged. Furthermore, it is possible to easily join without requiring a separate joining tool.

In addition, the joint part is deformed by pressing the upper and lower plates from below with a pressing tool and bites into the lower part of the core material and is joined to the lower plate, so the upper and lower plates are difficult to separate. It can be made into a strong structure.

In addition, the joining part includes a through hole, and 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. Therefore, it is easy to position the pressing tool, and it is also easy to deform and join efficiently.

FIG. 1 is a plan view of a floor panel showing an embodiment of the present invention. It is a bottom view of a floor panel showing an embodiment of the present invention. 2 is a sectional view taken along line AA in FIG. 1. FIG. 2 is a sectional view taken along line BB in FIG. 1. FIG. FIG. 1 is a sectional view of a main part of a floor structure using a floor panel of the present invention. FIG. 1 is a plan view of essential parts of a floor structure using the floor panel of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.
Note that it goes without saying that the present invention is not limited to the embodiments.

FIG. 1 is a plan view of a floor panel showing an embodiment, FIG. 2 is a bottom view of a floor panel showing an embodiment, FIG. 3 is a sectional view taken along line AA in FIG. 1, and FIG. , FIG. 5 is a sectional view of a main part of a floor structure using floor panels, and FIG. 6 is a plan view of main parts of a floor structure using floor panels.

As shown in FIGS. 1 to 4, the floor panel 1 of this embodiment has a substantially square shape of about 500 mm in length and width, and includes a core material 2, an upper plate 3 that covers the upper surface of the core material 2, and a core material 2. and a lower plate 4 covering the lower surface of.

Triangular chamfered portions 20 are formed at the four corners of the floor panel 1, and a stepped portion 21 is formed on the upper surface of each corner.
The stepped 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 is formed which continues from the upper surface of the floor panel 1 to the stepped portion 21.

The rising portion 22 has a linear shape parallel to the end surface of the chamfered portion 20 in plan view.
Further, the rising portion 22 is slightly inclined downward so as to gradually approach the end surface of the chamfered portion 20.

The core material 2 is made of a wood material, such as particle board, and has a thickness of, for example, about 20 mm.
In particular, the particle board used as the core material 2 can have a three-layer structure with a dense hard layer on the front and back sides and a relatively rough soft layer on the inside, which can efficiently ensure bending strength, especially for offices. It is also useful for floor panels, such as floors, which are expected to carry a relatively large load, since bending strength is required.
In addition, the use of domestically produced wood for the core material of wood materials such as particleboard is becoming more and more important, due to the enactment of the Act on the Promotion of the Use of Wood in Public Buildings and initiatives such as the Minato Model Carbon Dioxide Fixation Certification System. It can fully contribute to the

The core material 2 is a rectangular parallelepiped, and has an upper surface 2a and a lower surface 2b, and a side surface 2c rising perpendicularly from the lower surface 2b.

The core material 2 has four corners, a chamfered core part 2d which has been chamfered into a triangular shape and has a straight shape, a stepped core part 2e formed continuously from the chamfered core part 2d, and a stepped core part. Continuing from 2e, the upper surface 2a is provided with a rising core portion 2f that rises in a straight line parallel to the chamfered core portion 2d.

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

The lower plate 4 includes a lower surface covering portion 4a that covers the lower surface 2b of the core material 2, and a lower plate side surface that is continuously bent from the lower surface covering portion 4a along the side surface 2c and covers at least a portion of the side surface 2c. It has a covering part 4b.
At the corners 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 cornered core portion 2d of the core material 2.

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 part 3a that covers the upper surface 2a of the core material 2, and an upper plate side surface covering part 3b that is continuously bent along the side surface from the upper surface covering part 3a and covers the side surface 2c. It includes a joint part 30 which is continuously bent from the upper plate side surface covering part 3b along the lower surface covering part 4a and is overlapped and joined to the lower surface of the lower plate 4.

At the corner of the floor panel 1, the upper plate 3 has a rising covering part 3f which is continuously bent from the upper surface covering part 3a and is bent along the rising core part 2f of the core material 2, and covers the rising core part 2f. A stepped covering portion 3e that is continuously bent from the rising covering portion 3f along the stepped core portion 2e to cover the stepped core portion 2e, and a stepped covering portion 3e that is continuously bent from the stepped covering portion 3e along the chamfered core portion 2d. A chamfered covering part 3d is processed and covers the chamfered core part 2d, and a chamfered covering part 3d is continuously bent along the lower surface of the lower plate 4 and overlapped with the lower surface of the lower plate 4. and a corner joint portion 31 that is joined.

The chamfered part 20 of the floor panel 1 is composed of the chamfered core part 2d of the core material 2 and the chamfered covering part 3d of the top plate 3, and the stepped part 21 is formed by the chamfered core part 2e of the core material 2 and the chamfered core part 2e of the top plate 3. The rising portion 22 is composed of a rising core portion 2f of the core material 2 and a rising covering portion 3f of the upper plate 3.

As mentioned above, since the upper plate 3 and the lower plate 4 are formed by bending and covered with the corner portion of the core material 2, the core material 2 is inserted between the upper plate 3 and the lower plate 4. This is particularly effective when manufacturing the floor panel 1 by covering an already formed core material 2 such as particle board.

The joint portion 30 and the corner joint portion 31 are folded (so-called hemming) in which folded pieces 30a and 31a are further folded toward the upper surface side toward the outside of the floor panel 1, and a through hole is formed in the folded portion. 12, and is deformed by pressing the upper plate 3 and lower plate 4 from below the through hole 12 with a pressing tool (not shown) (so-called burring processing), and bites into the lower part of the core material 2, thereby forming the lower plate 4. Joined. A through hole 13 corresponding to the through hole 12 is provided in the portion of the lower plate 4 that is to be deformed.
The through holes 12 and 13 are provided along the circumferential direction of the floor panel 1 at appropriate intervals.

The joint portion 30 and the corner joint portion 31 are deformed by pressing the upper plate 3 and the lower plate 4 from below and are joined to the lower plate 4, so that the lower surface of the joint portion 30 and the corner joint portion 31 There is no downwardly protruding part, and even if the overlapping floor panels 1 are shifted, they will not get caught and the joints 30 and corner joints 31 will not be damaged. Furthermore, it is possible to easily join without requiring a separate joining tool.

In addition, the joint portion 30 and the corner joint portion 31 are deformed when the upper plate 3 and lower plate 4 are pressed from below, bite into the lower part of the core material 2, and are joined to the lower plate 4. The plate 3 and the lower plate 4 are less likely to peel off, resulting in a strong structure.

Furthermore, the joint portion 30 and the corner joint portion 31 are provided with a through hole 12, and are deformed when the upper plate 3 and lower plate 4 are pressed from below the through hole 12 and are joined to the lower plate 4. , it is easy to position the pressing tool, and it is also easy to deform and join efficiently.

The upper plate 3 includes a regulating recess 11 formed on the upper surface.
Specifically, on the upper surface of the floor panel 1, each of the center positions of four divided areas divided by the vertical and horizontal center lines can be engaged with the regulating protrusion 10 formed on the lower surface of the floor panel 1. A regulating recess 11 is formed. The shape of the depression of the regulation recess 11 is such that a part of the regulation convex part 10 can be accommodated therein.

The back surface 110 of the regulation recess 11 is formed in close contact with a hole 111 provided on the upper surface of the core material 2, as shown in FIG.
Specifically, the regulation recess 11 of the upper plate 3 and the hole 111 of the core material 2 are formed by pressing with a pressing tool (not shown) from above the upper plate 3 at a position corresponding to the regulation protrusion 10. , the back surface 110 of the regulating recess 11 and the hole 111 of the core material 2 are in close contact with each other.

Since the back surface 110 of the regulation recess 11 is formed in close contact with the hole 111 provided on the upper surface of the core material 2, the regulation recess 11 is difficult to deform, and the regulation can be performed by pressing from above the upper plate 3. The recess 11 and the hole 111 can be formed at the same time, and there is no need for positioning and alignment of the hole 111 during manufacturing.

The lower plate 4 has a regulating protrusion 10 that can engage with the regulating recess 11 on the lower surface of the lower plate 4 .
Specifically, the lower plate 4 is made to protrude downward at the center position of four divided areas divided by the longitudinal and lateral center lines, which are the positions corresponding to the regulation recesses 11 on the lower surface of the floor panel 1, to regulate the regulation. A convex portion 10 is formed.

The protruding length of the regulating convex portion 10 is longer than the thickness of the joint portion 30 and longer than the sum of the thickness of the joint portion 30 and the depth of the regulating recess 11.
Specifically, the protruding length of the regulating convex portion 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 surface of the joint portion 30, and The length is longer than the sum of the distance from the top surface of the regulation recess 11 to the bottom of the regulation recess 11.

Since the protruding length of the regulating protrusion 10 is longer than the thickness of the joint part 30, even if there is a case where the regulating protrusion 10 and the regulating recess 11 are stacked without engaging, the joint part 30 is connected to the lower floor panel. This prevents the joint portion 30 from being damaged.

In addition, since the protruding length of the regulation protrusion 10 is longer than the sum of the thickness of the joint part 30 and the depth of the regulation recess 11, when the regulation protrusion 10 and the regulation recess 11 are engaged and stacked, the joint The joint portion 30 is not brought into contact with the upper surface of the lower floor panel, and damage to the joint portion 30 can be prevented.

When a plurality of floor panels 1 are stacked before installation or during transportation, the regulating protrusions 10 and the regulating recesses 11 of the vertically stacked floor panels 1 engage with each other to regulate their movement, so there is no fear of them shifting.

Furthermore, even if the overlapping floor panels 1 are shifted, the joint 30 of the upper plate 3 overlaps the lower surface of the lower plate 4, and the regulating protrusion 10 also protrudes from the lower surface of the lower plate 4, so that the regulating protrusion 10 There is no fear that the plate 3 will come off due to hitting the end face of the joint 30. The moving joint 30 moves on the upper surface of the lower floor panel 1 where there is no regulating protrusion, and since the joint 30 does not collide with the regulating protrusion, the joint 30 is damaged and the upper plate 3 can be prevented from peeling off from the lower plate 4.

Even when a plurality of floor panels 1 are stacked, the regulation recess 11 does not deform because the back surface 110 is supported in close contact with the upper surface of the hole 111.
Since a plurality of regulating convex portions 10 and a plurality of regulating concave portions 11 are formed (four each in this embodiment), relative rotation of the overlapping floor panels 1 can also be prevented.

The floor panel 1 is manufactured, for example, as follows.
A regulating protrusion 10 is formed on the lower plate 4 by pressing it with a pressing member (not shown).

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 bonded together with an adhesive or the like.
The lower plate side covering portion 4b of the lower plate 4 is bent along the side surface 2c of the core material 2. There is enough core material 2 at the corner to perform the bending process.

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 bonded together using an adhesive or the like.
The upper plate side covering portion 3b of the upper plate 3 is bent along the side surface 2c of the core material 2, and the folded joint portion 30 in which the folded piece 30a is folded is folded along the lower surface covering portion 4a. and stack it on the bottom surface of the lower plate 4. There is enough core material 2 at each corner to perform the bending process.

Further, the rising core portion 2f, stepped core portion 2e, and chamfered core portion 2d of the core material 2 are covered with the raised covering portion 3f, step covering portion 3e, and chamfered covering portion 3d 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 3d may be bonded together with an adhesive or the like.
The rising covering portion 3f of the upper plate 3 is bent along the rising core portion 2f of the core material 2, the stepped covering portion 3e is bent along the stepped core portion 2e, and the chamfered covering portion 3d is formed into a chamfered core. It is bent along the portion 2d. Then, the corner joint portion 31 in which the folded piece 31a is folded and folded is folded along the lower surface covering portion 4a and stacked on the lower surface of the lower plate 4. There is enough core material 2 at each corner to perform the bending process.
In addition, the corners are also formed in areas where corners are formed in a plan view of the floor panel 1, such as the area where the side surface 2c of the core material 2 and the chamfered core part 2d intersect, and the area where the side surface 2c and the rising core part 2f intersect. There will be enough material.

Next, the joint portion 30 and the corner joint portion 31 are pressed and deformed from below by a pressing tool (not shown), a so-called burring process, and joined to the lower plate 4, and at the same time, a pressing tool (not shown) is applied from above to the upper plate 3. to form the regulating recess 11 of the upper plate 3 and the hole 111 of the core material 2.
The processing machine You can effectively utilize space and reduce man-hours.
Note that the process of joining the joints 30 and the corner joints 31 with the lower plate 4 and the process of forming the regulating recesses 11 of the upper plate 3 do not have to be performed overlappingly.

As shown in FIGS. 5 and 6, the floor structure using the floor panels 1 is a double floor in which a plurality of floor panels 1 are laid side by side above the floor slab 5.
A large number of columns 6 are erected on the floor slab 5, and the corners of the four floor panels 1 are butted against each other and supported by the columns 6. A wiring accommodation space 7 is formed between the floor slab 5 and the installed floor panel 1 in which cables and the like are placed.

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

The pedestal 61 includes a cylindrical nut 610 that is screwed onto the upper part of the screw shaft 600, a pedestal plate 611 that extends from the outer periphery of the cylindrical nut 610, and a pedestal 612 that is attached to the pedestal plate 611. .
By rotating the cylindrical nut 610 with respect to the screw shaft 600, the length of the support column 6 and the height of the pedestal 61 can be adjusted. Further, after adjusting the height, it can be fixed with a set screw 616 provided on the cylinder nut 610.

The pedestal 612 is attached to cover the pedestal plate 611 in advance. The pedestal 612 is made of synthetic resin, for example, and has a plane that is one size larger than the pedestal plate 611. The support column 6 is made of metal, for example, except for the base 612.

A plurality of (for example, four) hook portions 613 are provided at equal intervals in the circumferential direction at the lower end of the inner peripheral surface of the peripheral wall that is formed downward along the outer peripheral edge of the lower surface of the pedestal 612.
The pedestal 612 is placed on the upper surface of the support plate 611 by placing the pedestal 612 over the upper surface of the pedestal plate 611 and engaging the hook portion 613 with the lower surface of the pedestal plate 611.

The pedestal 612 includes a nut portion 614 and a partition wall 615 on the upper surface.
The nut portion 614 has a female thread (not shown) into which the lock screw 63 is screwed, and is formed to protrude near the center of the upper surface of the pedestal 612 .
Four partition walls 615 are formed radially from the outer peripheral surface of the nut portion 614, and divide the upper surface of the pedestal 612 into four sections.

When the corners of the four floor panels 1 are respectively placed on the four sections formed by the partition walls 615 on the upper surface of the pedestal 61, the corners of the four floor panels 1 will be placed in the center of the square space formed by the corner portions 20 of the floor panels 1. A nut portion 614 will be placed.
Further, the outer shape formed by the stepped portions 21 and rising portions 22 of the four floor panels 1 is a quadrilateral.

The pressure plate 62 has a thickness that is almost the same as the depth of the stepped portion 21 (height of the rising portion 22), and the outer shape of the pressure plate 62 is smaller than the outer shape formed by the stepped portions 21 of the four floor panels 1. It is also a slightly smaller rectangle.

A screw hole 620 for inserting the lock screw 63 is formed in the center of the pressing plate 62, and a recess 621 for fitting the head of the lock screw 63 is formed on the upper surface around the screw hole 620.

To construct the floor structure, a base 602 is fixed on the floor slab 5 and a large number of support legs 60 are erected.
The distance between the center axes of the support legs 60 is approximately equal to the length of one side of the floor panel 1. The length of the support leg 60 is adjusted in advance according to the required height of the wiring accommodation space 7, and the height of the pedestal 61 is adjusted in advance.

Next, on the upper surface of the pedestal 61, the corner portions of the floor panels 1 are placed on each of the four sections divided by the partition wall 615, and the four floor panels 1 are arranged with their corner portions abutting each other.
A rectangular through hole is formed by the cornered portions 20 of the four floor panels 1, and a nut portion 614 is arranged in this through hole. The stepped portions 21 of the four butted floor panels 1 have a rectangular outer shape.

Next, the pressing plate 62 is fitted onto the stepped portion 21 having a rectangular outer shape.
Since the rising portion 22 is inclined such that the upper side thereof moves away from the stepped portion 21, the press plate 62 is guided by the rising portion 22 and easily fitted onto the stepped portion 21.

Next, the lock screw 63 is screwed into the nut portion 614 through the screw hole 620 of the fitted press plate 62. As a result, the corners of the four floor panels 1 are held between the pedestals 61 and the pressing plates 62, and the floor panels 1 are stably laid.

The rising portion 22 is linear in plan view, and is fitted with one side of the pressing plate 62 that presses the stepped portion 21 with the corner portions of the other floor panels 1 aligned and pressed against the stepped portion 21, so that the lock screw 63 can be screwed. At this time, the press plate 62 is restricted and does not rotate idly, and the floor panel can be reliably supported.

Further, below the stepped covering portion 3e of the upper plate 3 constituting the stepped portion 21, there is a stepped core portion 2e of the core material 2, and further below that, the folded portion 31 of the upper plate 3 and the lower plate 4 are present. In other words, the core material 2 exists between the upper plate 3 and the lower plate 4 at the part of the stepped portion 21 that is pressed by the pressing plate 62 and supported and held by the pedestal 61. , the strength is increased and the deformation performance is improved. In other words, since the core material 2 is built into the corner of the floor panel 1 held between the pedestal 61 and the press plate 62, the strength is high and it is difficult to deform even when a strong load is applied.

The floor panel 1 is supported from below by bundles erected on the floor slab 5 at appropriate locations excluding corners.

Further, the pressing plate 62 has approximately 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. , the top surface of the floor structure is finished smooth.
Finally, a finishing material such as a carpet is installed on the upper surface of the laid floor panel 1.

[Other variations]
The present invention is not limited to the embodiments described above. Examples include the following:

In this embodiment, the core material is made of a wood material such as particle board, but it may also be made of lightweight concrete or the like.

In this embodiment, the floor panels are rectangular, but other rectangular shapes are also possible, and the number of panels to be laid with their corners butted together is also changed depending on the shape.
Moreover, a notch for pulling out the cable can also be formed at the end of the floor panel.

The structure of the struts that support the corners of the floor panels that are placed abutting each other is also not limited to that described in this embodiment.
For example, the pressure plate may be snap-fitted to the upper end of the support leg.

In this embodiment, the through hole 12 was provided in the joint 30 of the upper plate 3 and the through hole 13 was provided in the lower plate 4, but the invention is not limited to this. Through holes are provided in both the upper plate 3 and the lower plate 4. Alternatively, a through hole may be provided in either the upper plate 3 or the lower plate 4 and the plates may be deformed and joined together.
In this embodiment, the material is deformed by being pressed by the pressing tool and bites into the lower part of the core material 2, but the present invention is not limited to this. .

In the present embodiment, the protruding length of the regulating convex portion 10 is longer than the sum of the thickness of the joint portion 30 and the depth of the regulating recess 11, but the present invention is not limited to this. As long as the protruding length of the regulating protrusion is longer than the thickness of the joint, it may be shorter than the sum of the thickness of the joint and the depth of the regulating recess.

Each technical matter in any embodiment including modifications may be applied to other embodiments to form an example.

1 Floor panel 10 Regulating convex portion 11 Regulating concave portion 110 Back surface 111 Hole portion 12, 13 Through hole 2 Core material 2a Top surface 2b Bottom surface 2c Side surface 2d Corner core portion 2e Step core portion 2f Standing core portion 20 Corner portion 21 Step portion 22 Rising portion 3 Upper plate 3a Upper surface covering portion 3b Upper plate side covering portion 3d Corner covering portion 3e Step covering portion 3f Rising covering portion 30 Joint portion 31 Corner joint portion 4 Lower plate 4a Lower surface covering portion 4b Lower plate side covering portion 5 Floor slab 6 Pillar 60 Support leg 600 Screw shaft 602 Base 61 Rest 610 Cylindrical nut 611 Rest plate 612 Pedestal 613 Hook part 614 Nut part 615 Partition wall 616 Set screw 62 Press plate 620 Screw hole 621 Recess 63 Lock screw 7 Wiring accommodation space

Claims (15)

A floor panel comprising 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,
The core material has a side surface that rises perpendicularly from the lower surface,
The lower plate includes 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 from the lower surface covering portion along the side surface and covers at least a portion of the side surface. and,
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 from the upper surface covering portion along the side surface and covers the side surface, and the upper plate side surface covering portion that covers the side surface. A joint portion that is continuously bent from the side surface covering portion of the plate along the lower surface covering portion and is overlapped and joined to the lower surface of the lower plate, and a regulating recess formed on the upper surface of the upper plate. death,
The floor panel is characterized in that the lower plate has a regulating protrusion that can engage with the regulating recess on the lower surface of the lower plate. A floor panel comprising 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,
The core material has a side surface that rises perpendicularly from the lower surface,
The lower plate includes 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 from the lower surface covering portion along the side surface and covers at least a portion of the side surface. and,
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 from the upper surface covering portion along the side surface and covers the side surface, and the upper plate side surface covering portion that covers the side surface. A floor panel comprising: a joint portion that is continuously bent from the side surface covering portion along the lower surface covering portion and is overlapped and joined to the lower surface of the lower plate. The core material includes a chamfered core part in which a chamfer is formed in a straight line at a corner, a stepped core part formed continuously from the chamfered core part, and a chamfered core part continuously formed from the chamfered core part. A rising core part that stands up in a straight line parallel to the cornered core part on the upper surface,
The upper plate includes an upper surface covering part that covers the upper surface of the core material, and a rising covering part that is continuously bent from the upper surface covering part along the rising core part and covers the rising core part. A stepped covering portion that is continuously bent from the rising covering portion along the stepped core portion to cover the stepped core portion, and a stepped covering portion that is continuously bent from the stepped covering portion along the chamfered core portion. A chamfered covering part that covers the chamfered core part, and a chamfered covering part that is continuously bent from the chamfered covering part along the lower surface of the lower plate, and is overlapped and joined to the lower surface of the lower plate. 3. The floor panel according to claim 2, further comprising: a corner joint section having a corner joint section. At least one of the joint portion and the corner joint portion is folded so that the tip thereof is further folded toward the outside of the floor panel, and is overlapped and joined to the lower surface of the lower plate. The floor panel according to claim 2 or claim 3. At least either the joint portion or the corner 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. The floor panel according to any one of claims 2 to 4. At least either the joint portion or the corner joint portion 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. The floor panel according to any one of claims 2 to 4, characterized in that: At least one of the joint portion and the corner joint portion is provided with a through hole, and is deformed by pressing the upper plate and the lower plate from below the through hole with a pressing tool to deform the core. The floor panel according to any one of claims 2 to 4, wherein the floor panel is joined to the lower plate by biting into a lower part of the material. A floor panel comprising 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,
The upper plate includes a joint where a peripheral edge of the upper plate is bent below the core material and overlapped with the lower surface of the lower plate, and a regulating recess formed on the upper surface of the upper plate. has
The floor panel is characterized in that the lower plate has a regulating protrusion on the lower surface thereof that can engage with the regulating recess. 9. The floor panel according to claim 8, wherein a plurality of said restriction convex portions and said restriction recessed portions are each formed. The floor panel according to claim 8 or 9, wherein the protruding length of the regulating convex portion is longer than the thickness of the joint portion. 10. The floor panel according to claim 8, wherein the protruding length of the regulating protrusion is longer than the sum of the thickness of the joint and the depth of the regulating recess. 12. The floor panel according to claim 8, wherein a back surface of the regulating recess is formed in close contact with a hole provided on the upper surface of the core material. Any one of claims 8 to 12, wherein the joint portion is deformed by pressing the upper plate and the lower plate from below with a pressing tool and joined to the lower plate. The floor panel according to item 1. 8. The joint portion 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. The floor panel according to any one of claims 1 to 12. The joint portion includes a through hole, and is deformed by pressing the upper plate and the lower plate from below the through hole with a pressing tool, bites into the lower part of the core material, and joins the lower plate. The floor panel according to any one of claims 8 to 12, characterized in that:

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