JP7018029B2 - Table top plate - Google Patents

Description

The present invention relates to a table top plate, and more particularly to a table top plate made of a metal plate such as a steel plate.

As a table top plate used for a desk, a conference table, etc., a front plate and a back plate made of a metal plate, a synthetic resin plate, etc., a core material made of a foamed resin, etc. provided between the front plate and the back plate, and a core material. A table top plate including a strip-shaped edge member attached so as to cover the outer end surface of an outer end surface of a laminate composed of a front plate, a core material, and a back plate is known (for example, Patent Document 1). 2).

Registered Utility Model Gazette No. 303238 Japanese Unexamined Patent Publication No. 2016-195636

In the conventional table top plate, the edge member has little effect of improving the strength of the laminated body in the thickness direction, so that the core material needs to be evenly arranged over the entire area between the front plate and the back plate. be. Therefore, the productivity of the table top plate is lowered. In particular, when the corner portion of the table top plate has an arc shape (R shape), it is necessary to process the corner portion of the front plate and the back plate as well as the portion corresponding to the corner portion of the edge member into an arc shape. Will occur, and the productivity of the table top plate will decrease.

The problem to be solved by the present invention is to obtain a table top plate having sufficient strength in the thickness direction and having excellent productivity even if the corner portion of the top plate has an arc shape. be.

The table top plate according to one embodiment of the present invention is between the front plate (20) and the back plate (22), the corner member (24), and the front plate (20) and the back plate (22). The table top plate (10) including the core material (46) provided in the front plate (20) and the back plate (22) have substantially rectangular corners having an arc shape in a plan view. Main plate portion (20B, 22B) and one of the front plate (20) and the back plate (22) extending along each linear side of the main plate portion (20B, 22B) and the main plate portion. The corner member (24) has a first edge plate portion (20C) that stands up against (20B, 22B) and is joined to the other side of the front plate (20) and the back plate (22). The arc portion (24A) defining the outer peripheral surface of the arc shape corresponding to the arc shape of the corner portion and the arc portion (24A) extending from both ends of the arc portion (24A) and overlapping with the first edge plate portion (20C) and described above. It has a joining piece portion (24B) joined to the first edge plate portion (20C).

According to this configuration, the front plate (20) and the back plate (22) are connected over the entire circumference by the first edge plate portion (20C) provided on the front plate (20) and the corner member (24). Therefore, the strength in the thickness direction of the outer periphery and its vicinity is improved over the entire circumference of the table top plate (10), and productivity is achieved even if the corner portion of the table top plate (10) is arcuate. Will be excellent.

In the table top plate (10), the front plate (20), the back plate (22), and the corner member (24) are preferably press-molded products.

According to this configuration, the table top plate (10) becomes inexpensive.

In the table top plate (10), the core material (46) is preferably made of foamed resin.

According to this configuration, an increase in the weight of the table top plate (10) due to the core material (46) can be suppressed.

In the table top plate (10), preferably, the corner member (24) extends inward from each of the upper and lower edges of the arc portion (24A), and the front plate (20) and the back plate (20). 22) includes a flange portion (24C) that overlaps the main plate portion (20B, 22B), and each flange portion (24C) is joined to the main plate portion (20B, 22B).

According to this configuration, the joint strength between the corner member (24) and the front plate (20) and the back plate (22) is easily improved.

In the table top plate (10), preferably, at least one slit (24D) extending from the free end of the flange portion (24C) toward the arc portion (24A) is provided in the flange portion (24C). Have.

According to this configuration, wrinkles are suppressed from being generated in the flange portion (24C) during press forming of the corner member (24), and the flange portion (24C) and the main plate portion (20B, 22B) are properly joined. Will be wrinkled.

In the table top plate (10), preferably, the core material (46) has a rectangular plate shape, and each corner member (24) has a corresponding corner portion (46A) of the core material (46). ), The core material engaging portion (24E) for positioning the core material (46) is included.

According to this configuration, the core material (46) is positioned with respect to the front plate (20) and the back plate (22) without requiring a separate component.

In the table top plate (10), preferably, it extends along each linear side of the main plate portion (20B, 22B) of the other side of the front plate (20) and the back plate (22). It has a second edge plate portion (22C) that stands up against the main plate portion (20B, 22B), and each second edge plate portion (22C) is inward from the corresponding first edge plate portion (20C). The main plate portion (20B, 22B), the first edge plate portion (20C), and the second edge plate portion (22C) cooperate with each other to form a box-shaped cross-sectional portion (A). ing.

According to this configuration, the strength of each side portion of the table top plate (10) is improved without requiring a reinforcing member.

According to the table top plate according to the present invention, excellent productivity can be obtained even if the top plate has sufficient strength in the thickness direction and the corner portion of the top plate has an arc shape.

Side view of an office table using a table top according to one embodiment of the present invention. An exploded perspective view of the table top plate according to this embodiment. Perspective view of the table top plate according to this embodiment Top view of the table top plate according to the present embodiment with the front plate removed. Enlarged plan view of the corner portion of the table top plate according to this embodiment. Enlarged cross-sectional view along line VI-VI of FIG. Enlarged sectional view of the leg mounting part of the office table An exploded perspective view of the table top plate according to another embodiment. Top view of the table top plate according to another embodiment in a state where the front plate is removed. Enlarged plan view of the corner portion of the table top plate according to another embodiment. Partial perspective view showing the joint structure of the front plate and the back plate of the table top plate according to another embodiment.

Hereinafter, one embodiment of the table top plate according to the present invention and the office table in which the table top plate is used will be described with reference to FIGS. 1 to 7.

As shown in FIG. 1, the office table has a substantially rectangular planar shape and is attached to each corner portion of the table top plate 10 horizontally arranged on the floor surface and the table top plate 10. It has a leg body 12. A caster 14 is attached to the lower end of each leg 12.

As shown in FIGS. 2 and 3, the table top plate 10 includes a front plate 20 and a back plate 22 which are stamped products of a metal plate such as a steel plate, and four corners which are also stamped products. Includes member 24.

The front plate 20 has a flat plate-shaped main plate portion 20B in which each corner portion 20A extends in the horizontal direction of a substantially rectangular arc shape (R shape) in a plan view, and each linear side (4 sides) of the main plate portion 20B. It has a linear first edge plate portion 20C extending along the line and vertically standing (hanging) downward with respect to the main plate portion 20B. Each first edge plate portion 20C includes a joint allowance 20D that is bent into a hook shape at the lower end to form a vertical surface.

The back plate 22 has a flat plate-shaped main plate portion 22B in which each corner portion 22A extends in the horizontal direction of a substantially rectangular arc shape (R shape) in a plan view, and each linear side (4 sides) of the main plate portion 22B. It has a linear second edge plate portion 22C extending along the line and standing vertically upward with respect to the main plate portion 22B.

Each corner portion 20A of the front plate 20 and each corner portion 22A of the back plate 22 have the same shape and are aligned vertically. Each second edge plate portion 22C is at a position offset inward by a predetermined amount from the corresponding first edge plate portion 20C.

The bonding allowance 20D of the front plate 20 and the second edge plate portion 22C of the back plate 22 are bonded to each other by an adhesive. As a result, the front plate 20 and the back plate 22 are joined to each other at predetermined intervals in a state where the corner portions 20A of the front plate 20 and the corner portions 22A of the back plate 22 are vertically aligned with each other. ..

As shown in FIG. 5, each corner member 24 has an arcuate arcuate portion 24A corresponding to the arcuate shape of the corner portions 20A and 22A, and more specifically, an outer circumference having an arcuate shape substantially the same as the arcuate shape. The inner surfaces of the arc portion 24A that defines the surface (1/4 arc surface) and the first edge plate portion 20C that extends outward from both ends of the arc portion 24A and exists on both sides of the corner portion 20A of the front plate 20. It has a joining piece portion 24B that overlaps with the above. Each joining piece portion 24B is joined to the overlapping first edge plate portions 20C by spot welding or an adhesive. Each joining piece 24B is offset inward from the arc portion 24A by an amount corresponding to the plate thickness of the first edge plate portion 20C, and there is a step at the boundary between each joining piece 24B and the arc portion 24A. .. As a result, the outer surface of the arc portion 24A is smoothly connected to the outer surface of the corresponding first edge plate portion 20C without a step.

Each corner member 24 includes a flange portion 24C parallel to each other that extends inward from each of the upper and lower edges of the arc portion 24A and overlaps the main plate portions 20B and 22B. Each flange portion 24C is joined to the main plate portion 20B of the overlapping front plate 20 and the main plate portion 22B of the back plate 22 by spot welding or an adhesive. As a result, the front plate 20 and the back plate 22 are joined by the corner members 24 at predetermined intervals in addition to the joining between the joining allowance 20D and the second edge plate portion 22C.

Each corner member 24 has three slits 24D extending from the free end of the flange portion 24C toward the arc portion 24A in each of the upper and lower flange portions 24C. As a result, wrinkles are suppressed from being generated in the flange portion 24C during press forming of the corner member 24, and the flange portion 24C and the main plate portions 20B and 22B are appropriately joined.

A flat resin decorative plate 26 (see FIGS. 2 and 3) is attached to the upper surface of the main plate portion 20B of the front plate 20 with an adhesive. On the outer peripheral surface of each first edge plate portion 20C and each corner member 24, a resin decorative band 28 (see FIGS. 1, 3, and 5) so as to go around the outer circumference of the table top plate 10. Is affixed with an adhesive. The cosmetic band 28 blinds the seam between the first edge plate portion 20C and the corner member 24. This improves the aesthetic appearance of the table top plate 10. FIG. 3 shows a table top plate 10 in a completed state to which the decorative plate 26 and the decorative strip 28 are attached.

As shown in FIGS. 2, 4 and 6, on the left and right sides of the upper surface of the main plate portion 22B of the back plate 22 (the surface facing the lower surface of the main plate portion 20B of the front plate 20), the reinforcing plates 30 are respectively. Is provided. Each reinforcing plate 30 is bent horizontally from the rectangular flat plate-shaped main plate portion 30A, the standing piece portion 30B standing vertically from the left and right edges of the main plate portion 30A, and the upper ends of the standing piece portions 30B. It has an extending joint piece portion 30C. In each reinforcing plate 30, the main plate portion 30A is joined to the upper surface of the main plate portion 22B of the back plate 22 by spot welding or adhesive, and each joint piece portion 30C is joined to the lower surface of the main plate portion 20B of the front plate 20 by spot welding or adhesive. It is joined to.

A plurality of nuts 32 are fixed to the upper surface of the main plate portion 30A of each reinforcing plate 30 by welding. Each reinforcing plate 30 and the back plate 22 are formed with a through hole 34 for positioning each leg body 12 and a through hole 36 for bolting corresponding to each nut 32.

A core material 46 made of foamed resin such as foamed polypropylene or foamed polyester, which is formed or cut into a rectangular plate shape so as to be vertically sandwiched between the front plate 20 and the back plate 22 is arranged between the left and right reinforcing plates 30. ing. The core material 46 is attached to the lower surface of the main plate portion 20B of the front plate 20 and the upper surface of the main plate portion 22B of the back plate 22 with an adhesive or the like. As a result, the increase in weight is suppressed and the strength (rigidity) of the table top plate 10 in the thickness direction is improved.

As shown in FIG. 7, each leg body 12 has a leg body 38 having casters 14 attached to the lower ends and a bracket 42 attached to the upper ends of the leg bodies 38 by bolts 40. The bracket 42 is formed with a protrusion 42A for positioning and a through hole 42B for bolting corresponding to each nut 32.

Each leg 12 has a protrusion 42A fitted in a through hole 34, and is fixed to a back plate 22 by a plurality of bolts 44 inserted into the through holes 42B and 36 and screwed into each nut 32.

In the table top plate 10 of the present embodiment, the front plate 20 and the back plate 22 are coupled to each other over the entire circumference by the first edge plate portion 20C provided on the front plate 20 and the corner member 24. The strength in the thickness direction in and around the table top plate 10 is improved over the entire circumference of the table top plate 10. As a result, the required strength (rigidity) in the thickness direction can be obtained even if the core material 46 is not evenly provided to every corner between the front plate 20 and the back plate 22.

Since the corner member 24 is joined to the first edge plate portion 20C of the front plate 20 by the joining piece portion 24B extending from both ends of the arc portion 24A, the corner member 24 and the front plate 20 can be joined or simply configured. It is done accurately with high strength. Further, since the flange portion 24C of the corner member 24 is joined to the main plate portion 20B of the front plate 20 and the main plate portion 22B of the back plate 22, the joint strength between the corner member 24 and the front plate 20 and the back plate 22 is easily improved. ..

Since the arc shape of the corner portion of the table top plate 10 is defined by the arc portion 24A of the corner member 24 which is an individual part, it is not necessary to process the portion corresponding to the corner portion of the edge member into an arc shape, which is high. The productivity of the table top plate 10 is improved with a degree of freedom in design.

As a result, a table top plate 10 having sufficient strength in the thickness direction and having excellent productivity even when the corner portion has an arc shape can be obtained. Further, since the front plate 20, the back plate 22, and the corner member 24 are all press-molded products, an inexpensive table top plate 10 can be obtained.

Next, another embodiment of the table top plate according to the present invention will be described with reference to FIGS. 8 to 11. In FIGS. 8 to 11, the parts corresponding to FIGS. 1 to 7 are designated by the same reference numerals as those given in FIGS. 1 to 7, and the description thereof will be omitted.

In this embodiment, as shown in FIGS. 8 to 10, each corner member 24 opens to the free end side of each flange portion 24C and has a corresponding corner portion 46A of the rectangular plate-shaped core material 46. It includes a core material engaging portion 24E that is recessed in an L shape in a receiving plan view. When each core material engaging portion 24E receives the corresponding corner portion 46A of the core material 46, the core material 46 is positioned in the horizontal direction with respect to the front plate 20 and the back plate 22, and the main plate portion 20B of the front plate 20 and the main plate portion 20B and the back plate 20 are positioned. The core material 46 is arranged at a substantially central portion of the main plate portion 22B of the back plate 22.

As a result, each corner member 24 also serves as a positioning member for the core material 46, and it is not necessary to separately provide a positioning member for the core material 46. As a result, the number of parts can be reduced.

Further, in this embodiment, as shown in FIGS. 8 and 11, each second edge plate portion 22C is biased inward from the corresponding first edge plate portion 20C, and has a tip (upper end). Includes a joining piece 22D that is bent inward in the horizontal direction and joined to the lower surface of the main plate 20B. Each first edge plate portion 20C includes a contact piece portion 20E that is bent inward in the horizontal direction from the tip end (lower end) and abuts or is joined to the outer surface of the second edge plate portion 22C.

As a result, the first edge plate portion 20C, the second edge plate portion 22C, and the main plate portion 20B cooperate with each other to extend the box-shaped cross-sectional portion A along each linear side of the table top plate 10. (See FIG. 11). The box-shaped cross-sectional portion A improves the strength of each side portion of the table top plate 10 without requiring a reinforcing member.

Since other matters have the same configuration as the above-described embodiment, the same effect as that of the above-mentioned embodiment can be obtained in this embodiment as well.

The present invention has been described above with respect to preferred embodiments thereof, but as can be easily understood by those skilled in the art, the present invention is not limited to such embodiments and deviates from the gist of the present invention. It can be changed as appropriate to the extent that it does not.

For example, the edge plate portion corresponding to the first edge plate portion 20C may be formed on the back plate 22, and the edge plate portion corresponding to the second edge plate portion 22C may be formed on the front plate 20. The front plate 20, the back plate 22, and the corner member 24 do not necessarily have to be press-molded products, and these may be resin-molded products.

In addition, not all of the components shown in the above embodiments are indispensable, and they can be appropriately selected as long as they do not deviate from the gist of the present invention.

10: Table top plate 12: Leg body 14: Caster 20: Front plate 20A: Corner part 20B: Main plate part 20C: First edge plate part 20D: Joining allowance 20E: Contact piece part 22: Back plate 22A: Corner part 22B: Main plate part 22C: Second edge plate part 22D: Joining piece part 24: Corner member 24A: Arc part 24B: Joining piece part 24C: Flange part 24D: Slit 24E: Core material engaging part 26: Decorative plate 28 : Cosmetic band 30: Reinforcing plate 30A: Main plate 30B: Standing piece 30C: Joint piece 32: Nut 34: Through hole 36: Through hole 38: Leg body 40: Bolt 42: Bracket 42A: Protrusion 42B: Penetration Hole 44: Bolt 46: Core material 46A: Corner A: Box-shaped cross section

Claims (6)

A table top plate including a front plate and a back plate, a corner member, and a core material provided between the front plate and the back plate.
The front plate and the back plate extend along each side of the main plate portion having a substantially rectangular arc shape in each corner portion in a plan view and the main plate portion of one of the front plate and the back plate. It also has a first edge plate portion that stands up against the main plate portion and is joined to the other of the front plate and the back plate.
The corner member has an arc portion that defines an outer peripheral surface of the arc shape corresponding to the arc shape of the corner portion, and the first edge plate portion that extends from both ends of the arc portion and overlaps with the first edge plate portion. Has a joining piece and is joined to
The core material has a rectangular plate shape and has a rectangular plate shape.
Each corner member is a table top plate including a core material engaging portion that receives the corresponding corner portion of the core material and positions the core material . The table top plate according to claim 1, wherein the front plate, the back plate, and the corner member are press-molded products. The table top plate according to claim 1 or 2, wherein the core material is made of foamed resin. The corner member includes a flange portion extending inward from each of the upper and lower edges of the arc portion and overlapping the main plate portion of the front plate and the back plate, and each flange portion is joined to the main plate portion. The table top plate according to any one of claims 1 to 3. The table top plate according to claim 4, wherein the flange portion has at least one slit extending from the free end of the flange portion toward the arc portion. It has a second edge plate portion that extends along each linear side of the main plate portion of the other side of the front plate and the back plate and stands up against the main plate portion.
Each second edge plate portion is biased inward from the corresponding first edge plate portion.
The table top plate according to any one of claims 1 to 5 , wherein the main plate portion, the first edge plate portion, and the second edge plate portion cooperate with each other to form a box-shaped cross-sectional portion. ..

Images