JP7794442B2 - Multipurpose folding table - Google Patents

Description

The present invention relates to a multipurpose folding table that can be used in evacuation shelters during natural disasters such as earthquakes, tsunamis, and typhoons, as well as in everyday life. The multipurpose folding table of the present invention can be used as, for example, a bed, chair, sofa, table, luggage rack, stepladder, etc.

Conventionally, folding tables that can be used for multiple purposes in a variety of locations have been known. Generally, folding tables are required to be as compact as possible when not in use. Therefore, folding tables are designed to be as compact as possible, with minimal protrusions and a thin profile when stored.

Non-Patent Document 1 describes a cardboard bed 100 with the structure shown in Figures 10 and 11 as an example of this type of folding table. The cardboard bed 100 has a plurality of first partition plates 101 and second partition plates 102, each of which is rectangular.

The first partition plate 101 and the second partition plate 102 each have slits formed at required positions. Specifically, a slit is formed midway along the length of the first partition plate 101, extending from the bottom edge upward to match the arrangement of the second partition plate 102. On the other hand, a slit is formed midway along the length of the second partition plate 102, extending from the top edge downward to match the arrangement of the first partition plate 101. These slits interlock to form lattice-shaped legs 103 in plan view.

The rectangular top plate 104 covering the upper surface of the legs 103 has horizontal folds 105a, 105b, and 105c that divide the entire table into four sections, and the top plate 104 is divided into two symmetrical partial table plates 106 and 107 at the central horizontal fold 105b. Furthermore, the multiple first partition plates 101 each have vertical folds 108a, 108b, and 108c that divide the entire table into four sections.

When the cardboard bed 100 is stored, the top plate 104 is folded in an M-shape when viewed from the front (see Figure 11(c)). Also, when the cardboard bed 100 is stored, each first partition plate 101 is folded in an M-shape when viewed from above (see Figure 11(c)).

"Disaster Prevention "Patto! Bed!" (Cardboard Bed)", [online], Taiyo Industry Co., Ltd., [Retrieved February 16, 2022], Internet <https://www.taiyo-industry.co.jp/jigyo/prevention-goods>

However, in the stored state of a conventional cardboard bed 100, as shown in Figure 11(a), the first partition plate 101 is bent into a mountain shape at the vertical folds 108a and 108c, and the bent portion of the first partition plate 101 and part of the second partition plate 102 protrude from the top plate 104. Therefore, in the stored state of the cardboard bed 100, the bent portion of the first partition plate 101 and part of the second partition plate 102 protrude from the top plate 104, forming protruding portions 109 as shown in Figure 11(b).

In other words, the cardboard bed 100 is designed so that the structure that supports the load from the top plate 104 (specifically, the legs 103 consisting of the first partition plate 101 and the second partition plate 102) is moved to the side of the top plate 104 when in the stored state. As a result, a protruding portion 109 is created when in the stored state.

The present invention was made in light of these circumstances, and aims to create a multipurpose folding table in which the structure that supports the load from the top plate does not protrude from the top plate when folded, and in which there are no protruding parts when stored.

The present invention provides a multipurpose folding table including at least a side plate portion having a first bellows plate and a second bellows plate, a top plate that covers the upper sides of the side plate portions in an in-use state, and a central support portion that supports a central portion of the top plate,
The side plate portion is formed so as to be freely expandable in the longitudinal direction by engaging the notches of the first bellows plate and the second bellows plate,
The top plate is formed so that a fold line is formed in the center of the top plate in a direction intersecting the longitudinal direction of the side plate portion, and can be bent into a mountain shape so that the area near the fold line is the highest when viewed from the front,
The central support is attached to the underside of the central part of the tabletop.
In the stored state, when the side plate portions are compressed in the longitudinal direction and the top plate is bent, the central support portion rises to a position where it does not interfere with the side plate portions.

In the present invention, the folds may consist of a first fold and a second fold, the top plate may have a peak portion between the first fold and the second fold and a slope portion other than the peak portion, and the central support portion may have a support portion main body attached to the underside of the peak portion and a guide plate connecting the support portion main body and the underside of the slope portion.

In the present invention, the side plate portion may consist of a first side plate portion and a second side plate portion arranged in the same direction, and may further include a connecting portion connecting the first side plate portion and the second side plate portion.

In the present invention, the connecting portion may be configured to consist of a first connecting portion and a second connecting portion spaced a required distance apart, and in use, the central support portion may be positioned between the first connecting portion and the second connecting portion.

In the present invention, the connecting portion may have a bent portion that is bent in a U-shape when viewed from above.

In the present invention, the side panels, top panel, central support section, and connecting section may all be made of cardboard.

In the present invention, a front panel portion that becomes the front panel and a rear panel portion that becomes the rear panel when in use may be connected to both ends of the tabletop.

In the present invention, the shapes and sizes of the side panels, top panel, and central support section may be specified so that the device can be used as a bed.

In this invention, the multipurpose folding table includes at least side panels having a first bellows plate and a second bellows plate, a top panel that covers the upper sides of the side panels when in use, and a central support portion that supports the center of the top panel. The side panels are formed so that they can expand and contract in the longitudinal direction by interlocking the notches of the first bellows plate and the second bellows plate. The top panel has a fold line formed in the center of the top panel that intersects with the longitudinal direction of the side panels and is formed so that it can be bent into a mountain shape with the area near the fold line being the highest when viewed from the front. The central support portion is attached to the underside of the center of the top panel, and when the side panels are compressed in the longitudinal direction and the top panel is folded in the stored state, the central support portion rises to a position where it does not interfere with the side panels.

In this invention, the central support section that supports the load from the tabletop does not protrude from the tabletop when stored, and no protrusions occur. In this invention, the folded first and second bellows plates also do not extend beyond the limits of the tabletop and are not exposed to the outside. This invention makes it possible to create a multipurpose folding table that can be stored in a compact, thin shape with no protrusions.

FIG. 1 is a perspective view of a multipurpose folding table according to an embodiment, seen obliquely from above in use. FIG. 2 is a plan view of the multipurpose folding table according to the embodiment, seen from above in use. FIG. 3 is a perspective view of the multipurpose folding table of FIG. 1, viewed from diagonally above in an inverted state. FIG. 4 is a front view of the multipurpose folding table of FIG. 1, seen from the front direction, in a state immediately after the start of folding. 5(a) is a front view of the multipurpose folding table of FIG. 1 when the folding is about halfway completed, and FIG. 5(b) is a front view of the multipurpose folding table of FIG. 1 when the folding is completed. FIG. 6 is a plan view of the multipurpose folding table according to the embodiment, with the top plate unfolded and placed flat on a flat surface. Figure 7(a) is a plan view of the multipurpose folding table of the embodiment in a state where the first accordion plate is unfolded and laid flat on a flat surface, and Figure 7(b) is a plan view of the multipurpose folding table of the embodiment in a state where the second accordion plate is unfolded and laid flat on a flat surface. Figure 8(a) is a plan view of the multipurpose folding table of the embodiment in the state where the connecting parts are unfolded and laid flat on a flat surface, Figure 8(b) is a plan view of the central support part of the multipurpose folding table of the embodiment in the state where the central support part is unfolded and laid flat on a flat surface, and Figure 8(c) is a plan view of the multipurpose folding table of the embodiment in the state where the guide plates are unfolded and laid flat on a flat surface. FIG. 9(a) is a side view of the elastic band, and FIG. 9(b) is a perspective view of a multipurpose folding table according to a modified embodiment, viewed from diagonally above in an inverted state. FIG. 10 is a plan view showing a conventional folding table in use. 11(a) is a plan view showing the folding table of FIG. 9 in the middle of folding, FIG. 11(b) is a side view showing the folding table of FIG. 9 in the middle of folding, and FIG. 11(c) is a front view showing the folding table of FIG. 9 in the middle of folding.

Embodiments of the present invention will be described in detail below with reference to the drawings. Note that the following embodiments are merely examples of the present invention and are not intended to limit the scope of the present invention, its applications, or its uses.

In this specification, the up-down, left-right, and front-to-back directions are defined based on the position in which the tabletop 14 is placed in use, with the tabletop 14 visible directly below it when viewed from above. As shown in Figures 1 and 2, the left-to-right direction refers to the direction that coincides with the longitudinal direction of the first side panel portion 13a and the second side panel portion 13b. The front-to-back direction refers to the direction that coincides with the longitudinal direction of the fold 18.

This embodiment is a bed 1 for use in evacuation shelters in the event of a natural disaster. The bed 1 comprises a side panel 13 having a first bellows panel 11 and a second bellows panel 12, a top panel 14 that covers the upper side of the side panel 13 when in use, and a central support part 15 that supports the center of the top panel 14 when in use.

[Bed in use]
The bed 1 in the state where the top panel 14 is unfolded (hereinafter referred to as the "used state") will be described with reference to FIGS. 1 to 3. FIG.

As shown in Figure 2, bed 1 has a square shape (980 mm x 980 mm) when viewed from above in use. When two beds 1 are placed side by side, they have the same size as a standard-sized bed (1960 mm x 980 mm). Bed 1 corresponds to a multipurpose folding table.

The side plate portion 13 is formed so as to be expandable and contractible in the longitudinal direction by interlocking the notches of the first bellows plate 11 and the second bellows plate 12. The first bellows plate 11 and the second bellows plate 12 are each rectangular members, but as shown in Fig. 3, mountain folds and valley folds are provided along the longitudinal direction. The first bellows plate 11 and the second bellows plate 12 are each folded in a zigzag shape and the notches interlock with each other to form the side plate portion 13.

The side plate portion 13 consists of a first side plate portion 13a and a second side plate portion 13b, which are arranged in the same direction. The first side plate portion 13a is a member for supporting one side of the bed 1. The second side plate portion 13b is located opposite the first side plate portion 13a and is a member for supporting the other side of the bed 1.

A fold 18 is formed in the center of the top plate 14 in a direction that intersects with the longitudinal direction of the side plate portions 13 (front-to-back direction in Figure 2). Specifically, the fold 18 consists of two folds: a first fold 19 and a second fold 20. The top plate 14 is formed so that it can be bent into a mountain shape so that the fold 18 portion is the highest when viewed from the front (see Figure 5). The top plate 14 has a peak portion 21, which is the area between the first fold 19 and the second fold 20, and a slope portion 22, which is the area other than the peak portion 21. The slope portion 22 is connected to both the left and right ends of the peak portion 21.

A front panel 41, which becomes the front panel when in use, and a rear panel 42, which becomes the rear panel when in use, are arranged continuously at both ends of the top panel 14. The front panel 41 is a member that supports the user's head when in use. The rear panel 42 is a member that supports the user's feet when in use. When two beds 1 are used side by side, the front panel 41 and rear panel 42 also serve as members that support the user's back and waist area.

The central support section 15 is attached to the underside of the central section of the top plate 14, for example, with an adhesive. The central support section 15 includes a support section main body 16 attached to the underside of the top section 21, and a guide plate 17 connecting the support section main body 16 and the underside of the sloped section 22.

A connecting portion 23 is attached between the first side plate portion 13a and the second side plate portion 13b, connecting them. The connecting portion 23 consists of a first connecting portion 23a and a second connecting portion 23b, which are spaced a required distance apart. Specifically, each connecting portion 23a, 23b has a bent portion 24 that is bent into the shape of the Japanese katakana character "U." As shown in Figure 3, when in use, the central support portion 15 is located between the first connecting portion 23a and the second connecting portion 23b.

The side panels 13, top panel 14, central support section 15, and connecting section 23 are all made of corrugated cardboard. Hook-and-loop fasteners 51 are attached to the corners of the top panel 14 as fastening means for maintaining the shape when stored. One hook-and-loop fastener 51 is provided on the first side panel 13a side, and one on the second side panel 13b side. The hook-and-loop fastener 51 has a loop-shaped fastener surface that engages with a hook-shaped fastener surface (not shown) attached to the top panel 14.

[About the bed when stored]
The bed 1 in a state where the top panel 14 is folded (hereinafter referred to as the "stored state") will be described with reference to FIGS. 4 and 5. FIG.

When storing the bed 1, as shown in Figure 4, which shows the state immediately after folding has begun from the front, first, both ends of the first side plate portion 13a and the second side plate portion 13b, which are made up of the first bellows plate 11 and the second bellows plate 12, are compressed toward the center in the longitudinal direction, and the top portion 21 of the top plate 14 is lifted upward.

As a result, the first fold 19 and the second fold 20 become mountain fold lines, and the top plate 14 is folded into a mountain shape in side view. At this time, the central support portion 15 attached to the underside of the top portion of the top plate 14 rises to a position where it does not interfere with the side plate portions 13, as shown in Figures 4 to 5(a). Specifically, the support portion main body 16 of the central support portion 15 attached to the underside of the top portion 21 rises without changing its shape. Meanwhile, the guide plate 17 connecting the support portion main body 16 and the underside of the sloped portion 22 rises as folding progresses along the valley fold line 17a.

Finally, the bed 1 is folded into the shape shown in Figure 5(b), and the hook-and-loop fasteners 51 are engaged to maintain the folded state. When the bed 1 is in the stored state, the central support section 15, which is a structure that supports the load of the central portion of the top plate 14, is stored under the top portion 21 of the top plate 14. The folded first accordion plate 11 and second accordion plate 12 also do not extend beyond the extent of the top plate 14 and are not exposed to the outside. When the bed 1 is in the stored state, there are no structures that protrude from the top plate 14 to form protruding portions.

[Configuration of each component]
In this embodiment, the shapes and sizes of the side panels 13, top panel 14, and central support section 15 are specified so that the bed 1 can be used for multiple purposes. The configuration of each component will be described below with reference to Figures 6 to 8.

The top panel 14, front panel 41, and rear panel 42 are each made from a single piece of corrugated cardboard with the corrugation direction aligned longitudinally. The left-right length of the cardboard piece shown in Figure 6 is 1580 mm, and the front-to-back length is 980 mm. The top panel 14 has a first fold 19 and a second fold 20, which are mountain folds. A peak 21 is formed in the center of the top panel 14 in the longitudinal direction, and sloped sections 22 are formed on the left and right sides of the center 21. The left and right sloped sections 22 are connected to the front panel 41 and rear panel 42 via mountain folds 41a and 42a, respectively. As an example of size, the width of the peak 21 is 80 mm, the width of the sloped sections 22 is 450 mm, and the widths of the front panel 41 and rear panel 42 are 300 mm.

Generally, cardboard consists of a corrugated piece of paper called the "core" sandwiched between two flat sheets of paper called "liners." The wavy parts of the core are called "flutes." The "flute end face," the end where the flutes appear, has holes formed by the core and liner. The direction in which these holes are formed is the "corrugation direction." Cardboard is highly resistant to forces applied in a direction intersecting the corrugation direction, but is less resistant to forces applied parallel to the corrugation direction.

The first bellows plate 11 and the second bellows plate 12 are made of horizontally elongated corrugated cardboard pieces with the corrugation direction oriented longitudinally. The length of the corrugated cardboard piece shown in Figures 7(a) and (b) in the left-right direction is 1260 mm, and the length in the front-to-back direction is 300 mm.

The first bellows plate 11 and the second bellows plate 12 have slits 11a, 12a and 11b, 12b formed at required positions, respectively. Specifically, a slit 11a is formed in the first bellows plate 11, extending downward from the upper end, to match the position of the slit 12a in the second partition plate 102. On the other hand, a slit 12a is formed in the second bellows plate 12, extending upward from the lower end, to match the position of the slit 11a in the first partition plate 101. These slits interlock with each other to form the first side plate portion 13a and the second side plate portion 13b. The slits 11b, 12b are slits for interlocking with the first connecting portion 23a and the second connecting portion 23b, and both are formed upward from the lower end.

The first connecting portion 23a and the second connecting portion 23b are made of horizontally elongated cardboard pieces with the corrugation direction facing the longitudinal direction. The cardboard piece shown in Figure 8(a) is 1,370 mm long in the left-right direction and 300 mm long in the front-to-back direction.

A slit 23aa is formed in the first connecting portion 23a at a required position. Specifically, a slit 23aa is formed in the middle of the first connecting portion 23a, extending downward from the top end to coincide with the positions of slits 11b and 12b in the first connecting portion 23a and second connecting portion 23b where the first connecting portion 23a intersects. A similar slit 23ab is also formed in the first connecting portion 23b.

The support body 16 of the central support section 15 is made of a horizontally elongated piece of corrugated cardboard with the corrugation direction facing the short side. The corrugated cardboard piece shown in Figure 8(b) is 1065 mm long in the left-right direction and 300 mm long in the front-to-back direction. The support body 16 has slits 16a formed at required positions. The slits 16a are slits for engaging with the guide plates 17, and each slit is formed upward from the bottom end.

The guide plate 17 of the central support section 15 is made of a piece of corrugated cardboard with the corrugation direction facing the short side. The corrugated cardboard piece shown in Figure 8(c) is 520 mm long in the left-right direction and 220 mm long in the front-to-back direction. The guide plate 17 has slits 17b formed downward from the top end at required positions to mate with the slits 16a in the support section main body 16. The bed 1 uses two guide plates 17. The guide plate 17 has two valley fold lines 17a. When the bed 1 is stowed, the guide plate 17 is pushed by the sloped surface 22 of the top plate 14 and is folded at the valley fold lines 17a.

All of the components described above are made of cardboard, and the bed 1 is manufactured by fitting together the cuts and joining the overlapping portions with adhesive.

[Effects of this embodiment]
In this embodiment, the bed 1 includes side plates 13 formed by interlocking a first bellows plate 11 and a second bellows plate 12, a top plate 14 that covers the upper sides of the side plates 13 when in use, and a central support portion 15 that supports a load applied to the center of the top plate 14. The angle of the bent portions of the first bellows plate 11 and the second bellows plate 12 of the side plates 13 can be freely changed, allowing the side plates 13 to expand and contract in the longitudinal direction. A fold 18 is formed in the center of the top plate 14 in a direction that intersects the longitudinal direction of the side plates 13 when in use. The bed 1 can be folded in a mountain shape so that the vicinity of the fold 18 is highest when viewed from the front. The central support portion 15 is attached to the underside of the center of the top plate 14. When the side plates 13 are compressed in the longitudinal direction and the top plate 14 is folded when in the stored state, the central support portion 15 rises to a position where it does not interfere with the side plates 13.

In the bed 1, the central support section 15 that supports the load from the top plate 14 does not protrude beyond the top plate 14 when in the stored state, and no protrusions occur. In the bed 1, the folded first bellows plate 11 and second bellows plate 12 also do not extend beyond the range of the top plate 14 and are not exposed to the outside. The bed 1 is a multi-purpose folding table that can be stored in a compact, thin shape with no protrusions.

In this embodiment, the fold 18 consists of a first fold 19 and a second fold 19. The top plate 14 has a peak 21 between the first fold 19 and the second fold 20, and a slope 22 other than the peak 21. The peak 21 has the required width (specifically, 80 mm). Therefore, in this embodiment, the central support 15 can be easily provided below the top plate 14. In addition, the central support 15 has a support body 16 attached to the underside of the peak 21, and a guide plate 17 connecting the support body 16 and the underside of the slope 22.

If the guide plate 17 were not present and the central support section 15 were composed only of the support section body 16, the strength of the central support section 15 would be insufficient when in use, and the width of the top section 21 would have to be designed to be large. In contrast, in this embodiment, the central support section 15 is composed of the support section body 16 attached to the underside of the top section 21, and the guide plate 17 that connects the support section body 16 and the underside of the sloped section 22 and folds down when stored, thereby improving the strength of the central support section 15 when in use. Furthermore, in this embodiment, the width of the top section 21 can be made as small as possible, making it possible to slim the width of the bed 1 when stored.

However, guide plates 17 may be provided as needed, taking into consideration factors such as manufacturing costs. If guide plates 17 are not provided, the central support portion 15 may be rectangular. In this case, the top plate 14 can be designed with a slightly wider top portion 21, and the back surface of the top portion 21 and the upper surface of the rectangular central support portion 15 can be adhered with double-sided tape.

In this embodiment, the side plate portion 13 consists of a first side plate portion 13a and a second side plate portion 13b arranged in the same direction, and includes a connecting portion 23 that connects the first side plate portion 13a and the second side plate portion 13b. This increases the stability of the first side plate portion 13a and the second side plate portion 13b when the bed 1 is in use.

In this embodiment, the connecting portion 23 consists of a first connecting portion 23a and a second connecting portion 23b, which are spaced a required distance apart. When in use, the central support portion 15 is located between the first connecting portion 23a and the second connecting portion 23b. Therefore, when the bed 1 is in use, it is possible to adequately support the load around the central support portion 15.

In this embodiment, the first connecting portion 23a and the second connecting portion 23b have a bent portion 14 that is bent in a U-shape when viewed from above. Therefore, when the bed 1 is in use, the first connecting portion 23a and the second connecting portion 23b are arranged to surround the periphery of the central support portion 15, improving the space efficiency of the structure that supports the load below the top plate 14.

In this embodiment, the side panels 13, top panel 14, central support section 15, and connecting section 23 are all made of cardboard. This allows for easy disposal as combustible waste after a certain period of use, providing an environmentally friendly product.

In this embodiment, a front panel portion 41, which becomes the front panel when in use, and a rear panel portion 42, which becomes the rear panel when in use, are connected to both ends of the tabletop 14. In the bed 1, these are made from a single piece of cardboard, which makes it possible to reduce the number of parts.

In this embodiment, the shape and size of the side panels 13, top panel 14, and central support section 15 are specified so that the bed 1 can be used as such. In particular, the size of the bed 1 is specified so that when two beds are placed side by side, they will be the same size as a standard-sized bed. Therefore, the purpose of use of the bed 1 is not limited, and it can also be used as a table or chair if necessary during life in an evacuation shelter.

[Modification of the embodiment]
In the above-described embodiment, as shown in FIG. 9( b), a rubber cord 25 may be stretched between the longitudinal center of the first side plate 13a and the longitudinal center of the second side plate 13b. The rubber cord 25 has appropriate elasticity and, as shown in FIG. 9( a), has a knotted locking portion 25a at each end. A slit of a required length is provided in the longitudinal center of each of the first side plate 13a and the second side plate 13b, extending upward from the lower end (or downward from the upper end in FIG. 9( b)). The locking portion 25 is then sandwiched in the slit to attach the rubber cord 25 between the first side plate 13a and the second side plate 13b.

In this way, when the top panel 14 is opened to set up the bed 1, the action of the elastic cords 25 prevents the first side panel 13a and the second side panel 13b from warping outward, allowing the first bellows plate 11 and the second bellows plate 12 to unfold smoothly. Therefore, compared to when the elastic cords 25 are not provided, the bed 1 can be unfolded into its usable state more quickly.

In addition, when storing the bed 1, the elastic cords 25 maintain a constant distance between the first side plate 13a and the second side plate 13b, allowing the first bellows plate 11 and the second bellows plate 12 to fold smoothly. Therefore, compared to a case in which the elastic cords 25 are not provided, the bed 1 can be folded into the stored state more quickly. Note that in the modified example of Figure 9(b), the positions at which the elastic cords 25 are provided and the number of elastic cords 25 attached are not particularly limited.

In the above-described embodiment, the bed 1 is not limited to being square in shape when viewed from above, but may also be rectangular.

In the above-described embodiment, the zigzag shape of the first bellows plate 11 and the second bellows plate 12 is not limited to a single folding pattern consisting of a set of mountain folds and valley folds, and may be repeated two or more times.

This invention can be used for a variety of purposes, including beds, chairs, sofas, tables, luggage racks, and stepladders.

1 bed (multipurpose folding table)
REFERENCE SIGNS LIST 11 First bellows plate 12 Second bellows plate 13 Side plate portion 13a First side plate portion 13b Second side plate portion 14 Top plate 15 Central support portion 16 Support portion main body 17 Guide plate 18 Fold 19 First fold 20 Second fold 21 Top portion 22 Slope portion 23 Connecting portion 23a First connecting portion 23b Second connecting portion 24 Bent portion 41 Front plate portion 42 Rear plate portion

Claims (9)

A multipurpose folding table including at least a side plate portion having a first bellows plate and a second bellows plate, a top plate that covers an upper side of the side plate portion in a use state, and a central support portion that supports a central portion of the top plate,
the side plate portion is formed so as to be expandable and contractible in the longitudinal direction by engaging the notches of the first bellows plate and the second bellows plate,
The top plate is formed so that a fold line is formed in a central portion of the top plate in a direction intersecting with the longitudinal direction of the side plate portion, and the top plate can be bent into a mountain shape so that the vicinity of the fold line is the highest when viewed from the front,
The central support portion is attached to a lower surface of a central portion of the top plate,
In the stored state, when the side plate portions are compressed in the longitudinal direction and the top plate is folded, the central support portion rises to a position where it does not interfere with the side plate portions. the fold comprises a first fold and a second fold,
the top plate includes a top portion between the first fold and the second fold and a slope portion other than the top portion,
2. The multipurpose folding table according to claim 1, wherein the central support comprises a support body attached to the underside of the top portion, and a guide plate connecting the support body and the underside of the sloped portion. The side plate portion includes a first side plate portion and a second side plate portion that are arranged in the same direction,
The multipurpose folding table according to claim 1 or 2, further comprising a connecting portion that connects the first side plate portion and the second side plate portion. The connecting portion comprises a first connecting portion and a second connecting portion arranged at a required distance,
4. The multipurpose folding table according to claim 3, wherein, in a use state, the central support portion is located between the first connecting portion and the second connecting portion. The multipurpose folding table according to claim 4, wherein the connecting portion has a bent portion that is bent in a U-shape in plan view. 4. The multipurpose folding table according to claim 3 , wherein the side panels, the top panel, the central support section, and the connecting section are all made of corrugated cardboard. A multipurpose folding table according to claim 1 or 2, wherein a front panel portion that becomes the front panel and a rear panel portion that becomes the rear panel when in use are connected to both ends of the top panel. The multipurpose folding table of claim 3, wherein an elastic cord is stretched between the first side plate portion and the second side plate portion. The multipurpose folding table described in claim 1 or 2 can be used as a bed.