Assembly tray

Abstract

To provide a folding-type tray whose side walls are hard to bend when assembled as a tray.SOLUTION: A folding-type tray 1 has a flat plate-like material 4 that is flexible and waterproof and four connection parts 7 that are attached to the plate-like material 4 and have engaging parts 5 and engaged parts 6, and the folding-type tray is shape-alterable between the tray form and the storage form. The plate-like material 4 has a rectangular bottom plate part 11 that is placed in the center and becomes the bottom part in the tray form, four side plate parts 13, 13, 14, 14 that are provided at the four sides of the bottom plate part 11 respectively and become side wall parts in the tray form, four corner parts 16 that are provided at the four corners and become bending parts in the tray form. To make the tray form, each side plate part 13, 13, 14, 14 is bent and erected against the bottom plate part 11, the four corner parts 16 are bent to form the bending parts, and the engaging parts 5 are engaged with the engaged parts 6 to sustain the bending parts.SELECTED DRAWING: Figure 3

Description

Technical Field

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[0001] The present invention relates to an assembled tray.

Background Art

[0002] Patent Document 1 discloses an assembled tray (waterproof tray) that can change its shape between a tray form and a storage form. This assembled tray includes a bottom, a foldable frame-shaped wall, and a water-repellent sheet that covers the bottom and the wall. Also, when in the tray form, a bottom plate is separately provided on the bottom.

[0003] In the case of the tray form, it becomes a box-shaped body with an open top, and while storing the contents, it can prevent water leakage and the like. On the other hand, in the case of the storage form, it can be made compact by removing and folding the bottom plate.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since the side wall portion of the assembled tray of Patent Document 1 is composed of a foldable frame-shaped wall and a water-repellent sheet, there is a problem that the side wall portion is likely to fall outward during use or due to aging deterioration, impairing the function as a tray. Also, since the assembled tray is composed of a bottom plate, a frame-shaped wall, and a water-repellent sheet, there is a problem of a large number of parts. <00000​​​​​​To solve these problems, the present invention provides an assembly tray that can change shape between a tray form and a storage form, comprising a flat plate-shaped material having waterproof and flexible properties, and four connecting parts attached to the plate-shaped material and having engaging parts and engaged parts, wherein the plate-shaped material has a rectangular bottom plate portion located in the center and which becomes the bottom when it is in the tray form, four side plate portions provided on each of the four sides of the bottom plate portion and which become the side walls when it is in the tray form, and four corner plate portions provided at the four corners and which become the bent parts when it is in the tray form, wherein the tray form is achieved by bending each of the side plate portions upright relative to the bottom plate portion, bending the four corner plate portions to form the bent parts, and engaging the engaging parts and engaged parts to hold the bent parts.

[0007] According to the present invention, by raising the side plate portion and engaging the engaging portion with the engaged portion, the side wall portion can be made less likely to bend when assembled into a tray form. Furthermore, according to the present invention, the number of parts can be reduced. In addition, according to the present invention, since it becomes plate-shaped when stored, it has excellent storage capacity.

[0008] Furthermore, it is preferable to provide the rectangular plate portion with a first thin-walled portion that is thinner than other parts, and to fold the first thin-walled portion along the boundary to form the folded portion when creating the tray shape.

[0009] According to the present invention, the corner plate portion can be easily bent to form a bent portion.

[0010] Furthermore, it is preferable that the plate-like material has a second thin-walled portion in its central part that is thinner than the rest of the material, and that it be folded along this second thin-walled portion to form the storage configuration.

[0011] According to the present invention, it can be stored compactly when folded.

[0012] Furthermore, it is preferable that the opposing engaging portions and engaged portions are connected to each other when the material is folded along the second thin-walled portion.

[0013] According to the present invention, the tray shape can be maintained using the engaging portion and the engaged portion, and the storage shape after folding can also be maintained.

[0014] Furthermore, it is preferable that a first storage compartment is provided on the upper end side of the side wall, and that a shaft-shaped first reinforcing member, which suppresses deformation of the side wall, is always inserted into the first storage compartment.

[0015] According to the present invention, the side wall portion can be reinforced with the first reinforcing member, making the side wall portion less prone to bending.

[0016] Furthermore, it is preferable to provide a second storage compartment on the upper end side of the side wall, and to insert an axial second reinforcing member into the second storage compartment to suppress deformation of the side wall when the tray is in its tray configuration.

[0017] According to the present invention, the side wall can be reinforced by inserting a second reinforcing member, making the side wall less prone to bending.

[0018] Furthermore, the plate-like material has a second thin-walled portion in its central part that is thinner than the rest of the material, and can be folded along the second thin-walled portion to form the storage configuration. It is also preferable that a second storage compartment is provided on the upper end side of the side wall, and when the tray configuration is used, a axial second reinforcing member that suppresses deformation of the side wall is inserted into the second storage compartment, straddling the second thin-walled portion.

[0019] According to the present invention, the side wall can be reinforced by inserting a second reinforcing member, making the side wall less prone to bending. Furthermore, since the second reinforcing member is inserted across the second thin plate section, weaker areas can be reinforced.

[0020] Furthermore, it is preferable that a hole leading to the outside is formed in the second storage section at a position corresponding to the second thin-walled section.

[0021] According to the present invention, by providing holes, the plate-shaped material can be folded more easily.

[0022] In addition, in the storage form, it is preferable that the second reinforcing member is disposed in a storage portion formed by folding a plate-like material with the second thin portion as a boundary.

[0023] According to the present invention, since the second reinforcing member can be stored in the storage portion formed by folding the plate-like material, it is convenient for storing the second reinforcing member.

[0024] In addition, it is preferable that the corner portion of the gusset plate portion has a rounded shape.

[0025] According to the present invention, when the engaging portion and the engaged portion are engaged to hold the bent portion, the bent portion is less likely to be in the way.

Advantages of the Invention

[0026] According to the present invention, it is possible to provide an assembled tray with a small number of parts and a side wall portion that is difficult to bend in a state assembled in a tray form.

Brief Description of the Drawings

[0027] [Figure 1] It is a perspective view of an assembled tray in a tray form according to an embodiment of the present invention. [Figure 2] It is a plan view of an assembled tray in a storage form according to an embodiment of the present invention. [Figure 3] It is a plan view of the surface of the assembled tray in a state of being disassembled and unfolded. [Figure 4] It is a plan view of the back surface of the assembled tray in a state of being disassembled and unfolded. [Figure 5] It is a plan view of the plate-like material before forming the first storage portion and the second storage portion of the assembled tray.

Mode for Carrying Out the Invention

[0028] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figure 1 is a perspective view of the assembled tray in tray form. Figure 2 is a plan view of the assembled tray in storage form. Thus, the assembled tray 1 of this embodiment can be assembled into the "tray form" as shown in Figure 1 and used as a tray, and when not in use, it can be unassembled as shown in Figure 2 and folded in half to become the "storage form".

[0029] As shown in Figure 1, the assembly tray 1, in its tray form, comprises a rectangular base 10 and four side walls 12 rising from the periphery of the base 10. The shape of the four corners of the side walls 12 is maintained by engaging the connecting parts 7. As a result, the assembly tray 1 becomes a box-shaped body with an open top.

[0030] In the tray configuration shown in Figure 1, for example, a cooler box used for fishing, a tackle box, etc., can be stored in the assembled tray 1. The tray configuration prevents liquid from leaking out of the cooler box, thus preventing the interior of the vehicle or room from getting wet or dirty. Furthermore, the tray configuration can store not only cooler boxes and tackle boxes, but also various other types of box-shaped containers.

[0031] Figure 3 is a plan view of the surface of the assembled tray in its disassembled and unfolded state. Figure 4 is a plan view of the underside of the assembled tray in its disassembled and unfolded state. Surface 2 in Figure 3 is the side that becomes the outer periphery of the tray in the tray configuration shown in Figure 1. Underside 3 in Figure 4 is the side that becomes the inner periphery of the tray in the tray configuration shown in Figure 1.

[0032] The assembly tray 1 comprises a flat, plate-shaped material 4 that is waterproof and flexible, and four connecting parts 7. The plate-shaped material 4 is made of, for example, resin, and in this example, is a thin, roughly rectangular plate. When the plate-shaped material 4 is made of resin, ethylene vinyl acetate copolymer (EVA), polyvinyl chloride (PVC), thermoplastic rubber (TPR), etc. can be used. Ethylene vinyl acetate copolymer is particularly suitable as the material for the plate-shaped material 4 because it is highly heat resistant. Each connecting part 7 has a pair of adjacent engaging parts 5 (male) and engaged parts 6 (female) at the four corners of the surface 2 of the plate-shaped material 4 of the assembly tray 1. In this embodiment, buckles are exemplified for the connecting parts 7, but other means such as hook-and-loop fasteners may be used as long as the engaging parts 5 and engaged parts 6 can engage and be firmly joined.

[0033] The plate-like material 4 has a rectangular bottom plate portion 11 positioned in its center, which becomes the bottom 10 when it is in tray form. The plate-like material 4 also has four side plate portions 13, 13, 14, 14 provided on each of the four sides of the bottom plate portion 11, which become the side walls 12 (see Figure 1) when it is in tray form. Specifically, wide rectangular side plate portions 13, 13 are formed on the two long sides of the bottom plate portion 11. Rectangular side plate portions 14, 14 are formed on the two short sides of the bottom plate portion 11, which are narrower than the side plate portions 13. The width (height when standing) of the side plate portions 13 and 14 is the same. A thin-walled portion 15 is formed at the boundary between the bottom plate portion 11 and the side plate portions 13, 14, which is thinner than the rest of the bottom plate portion 11 and the side plate portions 13, 14. The side plates 13 and 14 can be folded relative to the bottom plate 11 at the thin-walled section 15. Each side plate 14 is provided with a handle 47 that protrudes outward.

[0034] The plate-like material 4 has four corner plate portions 16, each provided at one of its four corners, which become bent portions 20 (see Figure 1) when it is in tray form. The corner plate portions 16 are rectangular in shape. Both sides of each corner plate portion 16 are continuous, one side being the side edge of the side plate portion 13 and the other side being the side edge of the side plate portion 14. Each corner plate portion 16 is provided with a first thin-walled portion 17, which is thinner than the rest of the corner plate portion 16. The first thin-walled portion 17 extends diagonally from the corner 11a of the bottom plate portion 11 to the corner 21 of the plate-like material 4. The corner plate portion 16 can be bent at the first thin-walled portion 17. The corners 21 of the corner plate portion 16 are rounded and have a curved shape.

[0035] Furthermore, at the boundary between the corner plate portion 16 and the side plate portions 13 and 14, there is a first thin-walled portion 18 that is thinner than the rest of the corner plate portion 16. In other words, there are two first thin-walled portions 18 on each side of the corner plate portion 16. The corner plate portion 16 and the side plate portion 13 can be folded along the first thin-walled portion 18. Similarly, the corner plate portion 16 and the side plate portion 14 can be folded along the first thin-walled portion 18.

[0036] The engaging portion 5 and engaged portion 6 of the connecting portion 7 are both attached to the respective sides of each side plate portion 13, 14 via belts 19. Since the length of each belt 19 is adjustable, the position (tightness) of the engaging portion 5 and engaged portion 6 can be adjusted. On the side plate portion 13, the engaging portion 5, engaged portion 6, and belts 19 are arranged parallel to its longitudinal direction. Similarly, on the side plate portion 14, the engaging portion 5, engaged portion 6, and belts 19 are arranged parallel to its longitudinal direction. Furthermore, the engaging portion 5 and engaged portion 6 are arranged alternately in the circumferential direction of the bottom plate portion 11. When the side plate portions 13, 14 are folded upright relative to the bottom plate portion 11, the engaging portion 5 and engaged portion 6 face each other at the four corners, and these two can be engaged. The engaging portion 5, engaged portion 6, and belts 19 are positioned approximately in the middle of the width direction of each side plate portion 13, 14 (approximately in the middle of the height direction when upright).

[0037] As shown in Figures 3 and 4, a second thin-walled portion 23 is formed in the central part 22 of the base plate portion 11 in the longitudinal direction, which is thinner than the other parts. The second thin-walled portion 23 extends parallel to the short direction of the plate-like material 4. There may be only one second thin-walled portion 23, but in this embodiment, two are provided in parallel. The base plate portion 11 can be folded in half at the boundary of the second thin-walled portion 23.

[0038] As shown in Figure 3, a first storage compartment 31, which is an elongated space along the longitudinal direction, is formed at the outer end of each side plate portion 13, 14. A axial first reinforcing member 32 made of metal or the like is permanently inserted into this first storage compartment 31 to suppress deformation of the side wall portion 12.

[0039] In the side panel section 13, two first storage compartments 31 are formed on both sides in the longitudinal direction, avoiding the positions where the assembly tray 1 is folded in half as described above. Therefore, each side panel section 13 houses a total of four first storage compartments 31, each containing a first reinforcing member 32. The first storage compartments 31 are formed from approximately one end to the other in the longitudinal direction of each side panel section 13, excluding the positions where the assembly tray 1 is folded in half as described above. The first reinforcing member 32 is housed throughout the entire area of ​​each of these first storage compartments 31.

[0040] On the other hand, each side plate portion 14 has a first storage portion 31 formed in the longitudinal direction. The first reinforcing member 32 is housed throughout the entire area of ​​this first storage portion 31.

[0041] In the side plate portion 13, a second storage portion 33 is formed inside the first storage portion 31. The second storage portion 33 is an elongated insertion hole extending in the longitudinal direction of the side plate portion 13. The second storage portion 33 is formed in the center of the longitudinal direction of each side plate portion 13, and is not formed at either end. Openings 34 are formed at both ends of the second storage portion 33. A axial second reinforcing member 35, for example made of metal, can be inserted into the second storage portion 33 through these openings 34 to suppress deformation of the side wall portion 12 (side plate portion 13). When the second reinforcing member 35 is made of metal, stainless steel is preferable from the viewpoint of rust prevention.

[0042] The second reinforcing member 35 is a member inserted into the second storage section 33. Figure 3 shows the second reinforcing member 35 inserted into the second storage section 33. The second reinforcing member 35 comprises a shaft portion 38 inserted into the second storage section 33 and a handle 36 formed at one end of the shaft portion 38. The handle 36 is ring-shaped and facilitates the insertion of the shaft portion 38 into the second storage section 33. In the second storage section 33, a hole 37 leading to the outside is formed at a position corresponding to the second thin-walled portion 23 (the position where the assembly tray 1 is folded in half).

[0043] Figure 5 is a plan view of the plate-like material before the formation of the first and second storage compartments. From the outer periphery of each side plate portion 13, 14 of the plate-like material 4 before the formation of the first and second storage compartments 31 and 33, storage compartment formation allowances 41, 42 protrude, respectively, forming one side wall of the first and second storage compartments 31 and 33. By folding these storage compartment formation allowances 41, 42 towards the surface 2 or back surface 3 at the boundary portions 43, 44 with each side plate portion 13, 14, and welding each side plate portion 13, 14 to each storage compartment formation allowance 41, 42 at the welding portion 45 shown by the dashed line, the first storage compartment 31 and the second storage compartment 33 can be formed as shown in Figure 4.

[0044] Next, the "storage configuration" and "tray configuration (assembly method)" of the assembly tray 1 according to this embodiment will be described. There are two types of storage configurations: storage configuration α and storage configuration β.

[0045] <Storage format α> Storage configuration α, as shown in Figure 3, is a flat, unfolded version of the assembly tray 1. This allows for a thinner overall design, enabling storage in confined spaces. In this configuration, the second reinforcing member 35 can be stored within the second storage compartment 33.

[0046] <Storage format β> Storage form β is a folded form as shown in Figure 2. In storage form β, the plate-shaped material 4 is folded in half at the central part 22 with the second thin-walled part 23 as the boundary. At this time, the opposing engaging parts 5 and engaged parts 6 of the overlapping side plate parts 13, 13 are engaged at two points. Furthermore, the opposing engaging parts 5 and engaged parts 6 of the overlapping side plate parts 14, 14 are engaged at two points with the handle 47 in between.

[0047] This allows the folded state to be maintained. Also, since the handles 47, 47 face each other, they can be gripped and carried or hooked. Furthermore, folding creates a storage compartment inside, into which the second reinforcing member 35 can be stored. It is preferable that the second reinforcing member 35 is of a length that can be accommodated in the storage compartment. In other words, it is preferable that the second reinforcing member 35 is shorter than the length of the plate-shaped material 4 in the shorter direction.

[0048] <Tray configuration (assembly instructions)> First, as shown in Figure 3, the second reinforcing members 35, 35 are inserted into the second storage sections 33, 33, respectively. Next, the side plates 13, 13, 14, 14 are erected relative to the bottom plate 11. At this time, the corner plate 16 is bent along the first thin section 17 to form a bent portion 20 (see Figure 1). The bent portion 20 is triangular in shape and can be superimposed on the side plate 13 or side plate 14 (in this embodiment, it is superimposed on the side plate 13).

[0049] Next, engage the opposing engaging parts 5 and engaged parts 6 at the four corners. Also, pull the belt 19 as needed to tighten the connecting part 7. This completes the tray configuration shown in Figure 1. The second reinforcing members 35, 35 may be inserted after the tray configuration is achieved. By releasing the connecting part 7 and tilting the side plates 13, 13, 14, 14, the tray can be returned to the storage configuration α shown in Figure 3.

[0050] In the assembly tray 1 of this embodiment described above, the side plates 13 and 14 are raised upright relative to the bottom plate 11, while the bent portion 20 is held from the outside by the connecting portion 7. In other words, although the plate-like material 4 is flexible and therefore difficult to maintain an upright shape, the engagement portion 5 and the engaged portion 6 are engaged to hold the bent portion 20, thereby maintaining the state in which the four corners are formed by the side plates 13 and 14. This makes it possible to prevent the side wall portion 12 from bending when assembled into a tray shape.

[0051] Furthermore, according to this embodiment, unlike the aforementioned Patent Document 1, there is no need to separately provide a waterproof sheet, a bottom plate, etc., thus reducing the number of parts. Also, according to storage configurations α and β, both can be made thin, resulting in excellent storage capabilities.

[0052] Furthermore, according to this embodiment, the corner plate portion 16 is bent at the first thin-walled portions 17 and 18 to form the bent portion 20, making it easy to form the bent portion 20. In other words, although the plate-shaped material 4 is difficult to bend because it is made of a waterproof material, it can be easily bent by providing the first thin-walled portions 17 and 18. Similarly, the side plate portions 13 and 14 can be easily made to stand up by providing the thin-walled portion 15.

[0053] Furthermore, according to this embodiment, the plate-shaped material 4 has a second thin-walled portion 23 in the central part 22 which is thinner than the other parts, and it can be folded along the second thin-walled portion 23 to form a storage form β. This makes it easy to fold and allows it to be folded in half to make it more compact. In this embodiment, it is folded in half, but it may be folded into thirds or more.

[0054] Furthermore, by using the engaging portion 5 and engaged portion 6 of the connecting portion 7, it is possible to prevent the assembled tray 1 from expanding not only on the side walls 12, 12, but also when it is in storage configuration β. In addition, since the engaging portion 5 and engaged portion 6 used when the assembled tray 1 is in tray configuration can be used as is in storage configuration β, there is no need to separately provide engaging and engaged portions, and the manufacturing cost of the assembled tray 1 can be reduced.

[0055] In other words, the engaging portion 5 and the engaged portion 6 are positioned to accommodate both the tray configuration and the storage configuration β. Furthermore, as shown in Figure 1, the engaging portion 5 and the engaged portion 6 are positioned so that when the tray configuration is used, the engaging position is on the side plate portion 13 side. In addition, the engaging positions of the engaging portion 5 and the engaged portion 6 are positioned so as not to overlap with the corners that make up the four corners. As a result, there is no interference with the corners that make up the four corners or the handle 47, and the engagement work can be performed in a wider space than the side plate portion 14, resulting in good assembly.

[0056] Furthermore, according to this embodiment, the side wall portion 12 can be reinforced with the first reinforcing member 32, making the side wall portion 12 less prone to bending. The position of the first reinforcing member 32 can be set as appropriate, but by providing it at the upper end of the side wall portion 12 (the tip of the side plate portion 13, 14), the weak part can be accurately reinforced. In addition, since the first reinforcing member 32 is permanently installed, it can also contribute to maintaining the shape in storage forms α and β.

[0057] Furthermore, according to this embodiment, the side wall portion 12 is further reinforced by inserting the second reinforcing member 35 into the second storage portion 33, making the side wall portion 12 even less prone to bending. The central part of the long side side wall portion 12 is the part that is bent at the boundary of the second thin-walled portion 23, and is also the center in the longitudinal direction, making it difficult to ensure strength. In this respect, according to this embodiment, by providing the second reinforcing member 35 across the second thin-walled portion 23, the weak part can be accurately reinforced.

[0058] The second reinforcing member 35 may be provided at other locations requiring reinforcement, rather than at the location exemplified in this embodiment. In other words, the permanent first reinforcing member 32 and the second reinforcing member 35, which is inserted when the tray is in a tray configuration, can effectively provide reinforcement.

[0059] Furthermore, as in this embodiment, a hole 37 may be provided in the second storage section 33. Since the central part of the long side wall 12 is a bending point, the central part of the second storage section 33 is also prone to stress. According to this embodiment, since a hole 37 is formed in the central part of the second storage section 33, this stress can be reduced, and the plate-shaped material 4 can be easily folded. In other words, by providing a hole 37, stress concentration can be avoided, and thus damage to the second storage section 33 can be prevented.

[0060] Furthermore, according to this embodiment, in storage configuration β, the second reinforcing member 35 can be stored in the storage compartment formed by folding the plate-shaped material 4 in half, thus preventing the loss of the second reinforcing member 35.

[0061] Furthermore, according to this embodiment, since the corners 21 of the corner plate portion 16 have a rounded shape, when engaging the engaging portion 5 and the engaged portion 6 to hold the bent portion 20, the possibility of the bent portion 20 interfering with external items and becoming an obstacle can be reduced. In addition, although the bent portion 20 may be folded on the inside of the side wall portion 12, since it is folded and held on the outside, interference with items stored in the tray can be avoided.

[0062] It should be noted that the assembly tray 1 described above is merely one embodiment of the present invention and does not limit the present invention. [Explanation of symbols]

[0063] 1. Assembled Tray 4. Plate-shaped material 5 Engagement part 6. Engaged portion 7 Connecting part 11 Bottom plate part 12 Side wall section 13 Side plate part 14 Side plate part 16 Square plate part 17,18 First thin section 20 Bend section 21 Corner 23 Second thin section 31 First Storage Section 32 First reinforcing member 33 Second storage compartment 35 Second reinforcing member 37 holes

Claims

1. A flat, plate-like material having waterproof and flexible properties, A modular tray that can be assembled to change its shape between a tray form and a storage form, comprising four connecting parts attached to the plate-like material and having engaging and engaged parts, The aforementioned plate-shaped material is It is positioned in the center and has a rectangular bottom plate that forms the bottom when it is in the tray configuration, The bottom plate portion is provided on each of the four sides, and the four side plates that form the side walls when the tray is in the aforementioned configuration, It has four corner plates provided at the four corners, which become bent portions when the tray is in the aforementioned tray configuration, The tray is formed by folding each of the side plates upright relative to the bottom plate, folding the four corner plates to form the bent portion, and engaging the engaging portion with the engaged portion to hold the bent portion. The aforementioned plate-like material has a second thin-walled portion in its central part that is thinner than the rest of the material, and the assembly tray is characterized in that it is folded along the second thin-walled portion to form the storage configuration.

2. The assembly tray according to claim 1, characterized in that when folded along the second thin-walled portion, the opposing engaging portion and the engaged portion are connected to each other.

3. A flat, plate-like material having waterproof and flexible properties, A modular tray that can be assembled to change its shape between a tray form and a storage form, comprising four connecting parts attached to the plate-like material and having engaging and engaged parts, The aforementioned plate-shaped material is It is positioned in the center and has a rectangular bottom plate that forms the bottom when it is in the tray configuration, The bottom plate portion is provided on each of the four sides, and the four side plates that form the side walls when the tray is in the aforementioned configuration, It has four corner plates provided at the four corners, which become bent portions when the tray is in the aforementioned tray configuration, The tray is formed by folding each of the side plates upright relative to the bottom plate, folding the four corner plates to form the bent portion, and engaging the engaging portion with the engaged portion to hold the bent portion. An assembly tray characterized by having a first storage compartment on the upper end side of the side wall, and a shaft-shaped first reinforcing member that suppresses deformation of the side wall being permanently inserted into the first storage compartment.

4. A flat, plate-like material having waterproof and flexible properties, A modular tray that can be assembled to change its shape between a tray form and a storage form, comprising four connecting parts attached to the plate-like material and having engaging and engaged parts, The aforementioned plate-shaped material is It is positioned in the center and has a rectangular bottom plate that forms the bottom when it is in the tray configuration, The bottom plate portion is provided on each of the four sides, and the four side plates that form the side walls when the tray is in the aforementioned configuration, It has four corner plates provided at the four corners, which become bent portions when the tray is in the aforementioned tray configuration, The tray is formed by folding each of the side plates upright relative to the bottom plate, folding the four corner plates to form the bent portion, and engaging the engaging portion with the engaged portion to hold the bent portion. The upper end of the aforementioned side wall portion is provided with a second storage compartment. An assembly tray characterized in that, when in the tray configuration, an axial second reinforcing member is inserted into the second storage portion to suppress deformation of the side wall portion.

5. A flat, plate-like material having waterproof and flexible properties, A modular tray that can be assembled to change its shape between a tray form and a storage form, comprising four connecting parts attached to the plate-like material and having engaging and engaged parts, The aforementioned plate-shaped material is It is positioned in the center and has a rectangular bottom plate that forms the bottom when it is in the tray configuration, The bottom plate portion is provided on each of the four sides, and the four side plates that form the side walls when the tray is in the aforementioned configuration, It has four corner plates provided at the four corners, which become bent portions when the tray is in the aforementioned tray configuration, The tray is formed by folding each of the side plates upright relative to the bottom plate, folding the four corner plates to form the bent portion, and engaging the engaging portion with the engaged portion to hold the bent portion. The plate-like material has a second thin-walled portion in its central part that is thinner than the rest of the material, and can be folded along this second thin-walled portion to form the storage configuration. The upper end of the aforementioned side wall portion is provided with a second storage compartment. An assembly tray characterized in that, in the tray configuration, a axial second reinforcing member that suppresses deformation of the side wall portion is inserted across the second thin-walled portion into the second storage portion.

6. The assembly tray according to claim 5, characterized in that a hole leading to the outside is formed in the second storage section at a position corresponding to the second thin-walled section.

7. The assembly tray according to claim 5, characterized in that, in the storage configuration, the second reinforcing member is arranged in a storage portion formed by folding a plate-like material along the second thin-walled portion.

8. The aforementioned rectangular plate portion is provided with a first thin-walled portion which is thinner than other parts, The assembly tray according to any one of claims 1 to 7, characterized in that when forming the tray shape, the first thin-walled portion is folded along the boundary to form the folded portion.

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