Box

Abstract

To provide a compact and returnable foldable box that can be folded and packed within the size of a pallet, thereby minimizing the transportation costs and storage costs for returning the box to a sender.SOLUTION: A box 1 comprises: a foldable first cylindrical body 3 that is placed on a pallet 2 on which articles are fixed; a foldable second cylindrical body 4 that is placed on the first cylindrical body; a connecting member 5 that detachably connects the first cylindrical body and the second cylindrical body; and a lid 6 that covers the second cylindrical body. Since the cylindrical bodies 3, 4 are fitted into an outer shape of the pallet 2 when they are folded along folding lines 11 and stacked, the box can be minimized in size by covering it with the lid 6 and tying it with a belt 22 (Figs.12 to 18).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an assembled box placed on a pallet for storing articles placed on the pallet. In particular, it can realize the necessary storage volume on the pallet and can be folded after the transportation of the articles to be put together within the size range of the pallet, so it relates to a compact and returnable box that can minimize storage costs, transportation costs for returning to the sender, etc.

Background Art

[0002] Patent Document 1 below discloses an invention of a box used as a reusable box. This box is composed of a square bottom, side faces placed on the bottom, and a lid placed on the side faces. The bottom consists of a bottom plate and a bottom frame joined to the bottom plate at the peripheral portion of the bottom plate. The side faces consist of columns and side plates. The bottom frame of the bottom has grooves for inserting the lower ends of the side plates in the vertical direction to support the side plates. The columns of the side faces have grooves for inserting both vertical ends of the side plates to support the side plates, and the side faces can be disassembled or folded so as not to be bulky. According to this box, when used as a reusable box, it is said that the problems of bulkiness and labor can be solved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the box described in the above-mentioned Patent Document 1, the side faces assembled on the square bottom have a height that matches the length of the sides of the bottom. Therefore, when the side faces are folded, they can be overlapped on the bottom without protruding outside the bottom, so that a compact storage state can be achieved for returning to the sender or the like. However, if the height of the side faces is made larger than the length of the sides of the bottom in order to increase the storage volume, when the side faces are folded and overlapped on the bottom, they will protrude outside the bottom, so there is a problem that a compact storage state cannot be achieved.

[0005] The present invention has been made in view of the problems in the conventional technology described above, and can realize a storage space with a required volume on a pallet, and can be folded within the range of the size of the pallet after transporting the articles, so that the transportation cost and storage cost for returning to the sender can be minimized. The purpose is to provide a compact and returnable folding box.

Means for Solving the Problems

[0006] The box 1,100 described in claim 1 is a box 1,100 placed on a pallet 2 for storing articles on the pallet 2, a foldable first cylinder body 3 placed on the pallet 2, a foldable second cylinder body 4 arranged on the first cylinder body 3, a connecting member 5 detachably connecting the first cylinder body 3 and the second cylinder body 4, a lid body 6 covering the second cylinder body 4, and is characterized by comprising the above.

[0007] The box 1,100 described in claim 2 is the box 1,100 described in claim 1, wherein the connecting member 5 has a lower groove portion 20 into which the upper edge of the first cylinder body 3 is inserted by a predetermined length, and an upper groove portion 21 into which the lower edge of the second cylinder body 4 is inserted by a predetermined length.

[0008] The box 1,100 according to claim 3 is the box 1,100 according to claim 2, wherein the connecting member 5 has a pair of plate members 15 connected by a spring member 16 at a predetermined interval, the lower groove portion 20 opens at the lower end of the plate member 15, the upper groove portion 21 opens at the upper edge of the plate member 15, and an enlarged width portion 17 with an enlarged groove width is provided at the upper edge of the plate member 15.

[0009] The box 1,100 according to claim 4 is the box 1,100 according to claim 1, wherein the pallet 2, the first cylindrical body 3, and the second cylindrical body 4 are rectangular in shape in plan view, the first cylindrical body 3 and the second cylindrical body 4 each have a folding line 11 parallel to the height direction at the center of the short side of the rectangle, the height of the first cylindrical body 3 and the second cylindrical body 4 is set to be shorter than the length of the short side of the rectangle.

[0010] The box 1,100 according to claim 5 is the box 1,100 according to claim 4, wherein at least a part of the connecting member 5 is such that, in the assembled state of the box 1,100, the upper edge of the first cylindrical body 3 provided with the folding line 11 is inserted into the lower groove portion 20, and the lower edge of the second cylindrical body 4 provided with the folding line 11 is inserted into the upper groove portion 21.

[0011] The box 1,100 according to claim 6 is the box 1,100 according to claim 4, wherein a structure identical to the structure formed by the first cylindrical body 3 and the second cylindrical body 4 detachably connected by the connecting member 5 is provided in any number of stages on the second cylindrical body 4.

Advantages of the Invention

[0012] According to the invention described in claim 1, since the box for storing the articles placed on the pallet is composed of the first cylindrical body and the second cylindrical body in two upper and lower stages, by appropriately setting the height of each cylindrical body, the height of the entire box can be arbitrarily set according to the height of the articles to be stacked on the pallet. When each cylindrical body is folded and stacked on the pallet for storage or return of the box, etc., it can be in a compact state that does not protrude from the pallet, and the requirement of space saving can also be met. Further, at the time of reuse, if the folded first cylindrical body is returned to a cylindrical shape and placed on the pallet, and the second cylindrical body returned to a cylindrical shape is coupled to the first cylindrical body with a connecting member, the box for storing the articles on the pallet can be easily reproduced on the pallet.

[0013] According to the invention described in claim 2, by inserting the lower groove portion of the connecting member into the upper edge of the first cylindrical body and attaching it to the first cylindrical body, and inserting the lower edge of the second cylindrical body into the upper groove portion of the connecting member, the assembly of the box that combines the first cylindrical body and the second cylindrical body can be performed simply and reliably.

[0014] According to the invention described in claim 3, when assembling the box, if the widened portion of the connecting member is pinched with a finger and force is applied, the groove width of the upper groove portion narrows against the elastic force of the leaf spring, and conversely the lower groove width widens. Therefore, the lower groove portion of the connecting member can be easily inserted into an arbitrary position of the upper edge of the first cylindrical body. After that, if the force is released, the connecting member can be surely attached to the upper edge of the first cylindrical body by the elastic force of the leaf spring. Since the position of the connecting member is fixed, the operation of inserting the lower edge of the second cylindrical body into the upper groove portion of the connecting member is simple, and the operation of assembling the second cylindrical body on the first cylindrical body can be easily performed.

[0015] According to the invention described in claim 4, when the first cylinder and the second cylinder are each folded along the folding line to be in a flat state, the length of the long side is the same as the length of the long side of the pallet, and the length of the short side corresponding to the height before folding is smaller than the length of the short side of the pallet. Therefore, when stacked on the pallet, it will not protrude outside the pallet. If a lid is placed on top of this and the whole is tied with a binding tool, it will be assembled into an easily handled shape within the outer shape of the pallet, making it easier to store and return the box after the article is taken out.

[0016] According to the invention described in claim 5, since the first cylinder and the second cylinder are foldable, if there is no reinforcement structure for the folding line part, it may be easily deformed at the folding line. However, in the state where the box is assembled, in both the first cylinder and the second cylinder, they are connected by a connecting member at the folding line part, and since the connecting member functions as a reinforcement structure, it is not easily deformed.

[0017] According to the invention described in claim 6, according to the height of the article to be stored on the pallet, a third cylinder can be placed on the second cylinder, a fourth cylinder can be placed on the third cylinder, and the number of stages of the cylinders can be increased to increase the height of the box.

Brief Description of the Drawings

[0018]

Figure 1

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Figure 19

Embodiments for Carrying Out the Invention

[0019] The structure of the box of the first embodiment and the like will be described with reference to FIGS. 1 to 11. As shown in FIGS. 1 to 4, the box of the first embodiment is a box 1 that is placed on the pallet 2 surrounding an article in order to store and protect the article (not shown) attached on the pallet 2. This box 1 includes a foldable first cylinder body 3 placed on the pallet 2, a foldable second cylinder body 4 disposed on the first cylinder body 3, a plurality of connecting members 5 detachably connecting the first cylinder body 3 and the second cylinder body 4, and a lid body 6 covering the upper part of the second cylinder body 4.

[0020] As shown in FIGS. 1 to 4, the pallet 2 includes a rectangular upper surface plate 7 and a plurality of block-shaped girders 8 provided at key positions on the back surface of the upper surface plate 7, and is entirely made of metal. The gap between the girders 8 serves as an insertion opening for the forks of a forklift. Further, on the surface of the upper surface plate 7, at a position slightly inside the outer shape of the upper surface plate 7, a rectangular circumferential stopper 9 that stands vertically from the surface is provided. As will be described later, this is a structure for holding the first cylinder body 3 on the pallet 2. Note that the stopper 9 can be constituted by a commercially available angle material or the like. Also, although not shown, at a plurality of locations on the surface of the upper surface plate 7, fixing fittings used to fix the article placed on the pallet 2 to the pallet 2 are provided. Examples of the fixing fittings include hooks or annular members attached to the upper surface plate 7 with hinges. If the article to be transported is placed on the pallet 2, a known tightening band (lashing belt) is looped around the article and hooked to the fixing fitting, and tension is applied to fix it, the article can be securely held on the pallet 2.

[0021] As shown in FIGS. 1 to 4, the first cylindrical body 3 is a vertically penetrating rectangular cylindrical body composed of four circumferentially connected side surfaces. Among the four side surfaces, the side surface corresponding to the long side of the rectangle is called the long side surface 10L, and the side surface corresponding to the short side of the rectangle is called the short side surface 10S. The long side surface 10L and the short side surface 10S are collectively referred to as the side surface 10. The size of the rectangle of the first cylindrical body 3 is slightly larger than the rectangular stopper 9 provided on the upper surface plate 7 of the pallet 2. Therefore, as shown in part (A) in FIG. 3 and FIG. 5 which is an enlarged view of the part (A), when the first cylindrical body 3 is inserted into the stopper 9 and placed on the pallet 2, the inner surface of the lower edge of the first cylindrical body 3 faces the outer surface of the stopper 9. Therefore, even if a force is applied from the outside to the inside, the first cylindrical body 3 will not move and will not slip off the pallet 2.

[0022] As shown in FIGS. 1 to 4, folding lines 11 parallel to the height direction (vertical direction) are provided at the centers of the two short side surfaces 10S of the first cylindrical body 3. Also, the height (length in the vertical direction) of the first cylindrical body 3 is slightly shorter than the length of the short side of the pallet 2, and more specifically, it is set to be slightly shorter than the length of the stopper 9 parallel to the short side of the pallet 2. Therefore, although details will be described later with reference to FIGS. 15 to 17 etc., if the two short side surfaces 10S, 10S of the first cylindrical body 3 are folded inward along the folding lines 11, 11 to make the whole into a flat rectangular shape, the longitudinal dimension of the rectangular shape will not be longer than the long side of the pallet 2, and the short transverse dimension of the rectangular shape will not be longer than the short side of the stopper 9. For this reason, the folded first cylindrical body 3 can be placed on the pallet 2 without protruding outside the outer shape of the pallet 2. Incidentally, as an example, the first cylindrical body 3 is composed of a multi-layered reinforced cardboard including three or more liners and a corrugated core material connecting adjacent liners. In addition, it can also be composed of a resin plate, a thin metal plate, or the like.

[0023] As shown in FIGS. 1 to 4, the second cylinder body 4 is a rectangular cylinder body penetrating vertically in a plan view, and since its shape, structure, and material are the same as those of the first cylinder body 3, the detailed description thereof refers to the description of the first cylinder body 3. As shown in part (C) in FIG. 3 and FIG. 7 which is an enlarged view of the part (C), when the first cylinder body 3 and the second cylinder body 4 are connected using a connecting member 5 (see FIG. 8, details will be described later), the upper edge of the first cylinder body 3 and the lower edge of the second cylinder body 4 are butted against each other in substantially the same plane via the connecting member 5. Therefore, when a load in the height direction is applied to the second cylinder body 4, the load is supported by the side surface 10 of the second cylinder body 4 and further transmitted to and supported by the side surface 10 of the first cylinder body 3, so the strength of the box 1 against the load in the height direction is high.

[0024] As shown in FIGS. 1 to 4, the lid body 6 is a rectangular box body having a rectangular flat portion 12 and a frame-shaped side portion 13 provided on the outer periphery of the flat portion 12, and only one side is open. The height of the side portion 13 of the lid body 6 is smaller than the height of the side surface 10 of the first cylinder body 3 and the second cylinder body 4, and is about 1 / 5 of the height of the side surface 10 of the first cylinder body 3 and the second cylinder body 4. Also, the size of the flat portion 12 of the lid body 6 is slightly larger than the rectangle of the second cylinder body 4 in a plan view. Further, as shown in FIGS. 3, 4, and FIG. 6 which is an enlarged view of part (B) in FIG. 3, three reinforcing members 14 are provided on the back surface of the lid body 6. The reinforcing member 14 is a strip-shaped member slightly shorter than the inner diameter of the short side surface 10S of the second cylinder body 4, and is attached at a total of three locations, namely, two locations at both ends and one location in the middle, in the direction of the long side of the lid body 6 parallel to the short side of the lid body 6. Due to this reinforcing member 14, the lid body 6 is not easily deformed even when a surface load is applied to the surface. Also, as shown in FIGS. 3, 4, and 6, when the lid body 6 is placed over the opening at the upper edge of the second cylinder body 4, the upper edge of the second cylinder body 4 enters the gap between the side portion 13 of the lid body 6 and the reinforcing member 14 and comes into contact with the back surface of the flat portion 12, so the position of the lid body 6 is less likely to shift. If the dimension of the gap between the side portion 13 of the lid body 6 and the reinforcing member 14 is set to be equal to or slightly smaller than the thickness of the second cylinder body 4, when the lid body 6 is placed over the second cylinder body 4, the upper edge of the second cylinder body 4 is inserted into the gap with some resistance or friction, so the lid body 6 closes the second cylinder body 4 in a semi-fixed state. Note that the lid body 6, like the first and second cylinder bodies 3 and 4, can be made of reinforced cardboard or the like.

[0025] Note that the number and arrangement of the reinforcing members 14 shown in FIGS. 3 and 4 are merely examples. For example, as shown in FIGS. 1 and 2, the number of the reinforcing members 14 attached to the back surface of the lid body 6 may be two. In this case, the reinforcing member 14 is a strip-shaped member slightly shorter than the long side of the lid body 6, and is attached to two locations at both ends in the direction of the short side of the lid body 6 in parallel with the long side of the lid body 6.

[0026] As shown in FIGS. 8 to 11, the connecting member 5 has a pair of plate members 15, 15 arranged at a predetermined interval so as to be parallel to each other, and a leaf spring 16 as a spring member for connecting the pair of plate members 15, 15. The plate member 15 has a rectangular shape with the lateral direction during use as the longitudinal direction. The upper edge portions of the pair of plate members 15, 15 are widened portions 17 bent outwardly from each other. The leaf spring 16 includes a central base portion 18 and a pair of plate portions 19, 19 continuously extending in the same direction at right angles to both sides of the base portion 18, and the pair of plate portions 19, 19 are respectively joined to the inner surfaces of the pair of plate members 15, 15 by welding or the like. Therefore, the gap between the pair of plate members 15, 15 is vertically partitioned by the base portion 18 of the leaf spring 16. The lower gap opened at the lower end of the plate member 15 is referred to as a lower groove portion 20, and the upper edge of the first cylindrical body 3 is inserted therein by a predetermined length. The upper gap opened at the widened portion 17 at the upper end of the plate member 15 is referred to as an upper groove portion 21, and the lower edge of the second cylindrical body 4 is inserted therein by a predetermined length.

[0027] To assemble the box 1 of the first embodiment, the procedure for attaching the connecting member 5 to the first cylindrical body 3 will be described with reference to FIGS. 9 to 11. Although this operation is performed manually by an operator, for the sake of convenience, the operator or his / her hand is not shown in the drawings. First, the operator holds the connecting member 5 and arranges the lower groove portion 20 of the connecting member 5 parallel to directly above the upper edge of the first cylinder body 3 as shown in Fig. 9(a). As shown in Figs. 9(b) and 10, pinch the widening portion 17 in the arrow direction (opposing direction) so that the interval between the upper groove portions 21 narrows, and widen the interval of the lower groove portion 20 in the arrow direction (separating direction). As shown by the downward arrow in Fig. 9(b), while keeping the interval of the lower groove portion 20 widened, move the connecting member 5 toward the upper edge of the first cylinder body 3. As shown in Figs. 9(c) and 11, release the compressive force applied to the widening portion 17 after pushing down the connecting member 5 until the upper edge of the first cylinder body 3 abuts against the base portion 18 of the leaf spring 16, or release the compressive force applied to the widening portion 17 after the upper edge of the first cylinder body 3 is inserted into the lower groove portion 20 and push down the connecting member 5 until the upper edge of the first cylinder body 3 abuts against the base portion 18 of the connecting member 5. Then, the connecting member 5 is in a state of firmly attaching to the first cylinder body 3 by the elastic force of the leaf spring 16 with the upper edge of the first cylinder body 3 sandwiched by a predetermined dimension. In this way, since the widening portion 17 can be pinched to widen the lower groove portion 20, the operation of attaching the connecting member 5 to the first cylinder body 3 can be easily performed.

[0028] Note that the material of the leaf spring 16 is not limited to spring material, and members such as aluminum with low spring properties can also be substituted. In this case, when pinching the widening portion 17 by hand to widen the interval of the lower groove portion 20, design is considered in view of the plate thickness of the leaf spring 16 so that plastic deformation of the leaf spring 16 is suppressed within the elastic limit where it does not occur.

[0029] The assembly procedure of the box 1 of the first embodiment will be described with reference to Figs. 1 and 2. First, although not shown in FIG. 1, an article is placed and fixed on the upper surface plate 7 of the pallet 2. Next, as shown in FIG. 1, an article (not shown) is stored on the upper surface plate 7 of the pallet 2, and the first cylindrical body 3 is arranged so as to externally insert the stopper 9. Next, as shown in FIG. 1, two connecting members 5 are attached to each side surface 10 of the first cylindrical body 3. The position where the connecting member 5 is attached is arbitrary, but if it is attached at two positions close to the corner of the first cylindrical body 3 and sandwiching the corner as shown in the figure, the effect of reinforcing the easily deformable corner can be obtained. This attachment work is easy because, as described above, it only involves opening the lower groove portion 20 and inserting it into the upper edge of the first cylindrical body 3.

[0030] Next, as shown in FIG. 2, the lower edge of the second cylindrical body 4 is inserted into the upper groove portion 21 of the connecting member 5 of the first cylindrical body 3 to connect the first cylindrical body 3 and the second cylindrical body 4. Since the connecting member 5 is fixed at a predetermined position on the upper edge of the first cylindrical body 3, there is no difficulty in inserting the lower edge of the second cylindrical body 4 into the upper groove portion 21 of the connecting member 5. In this connection work, as shown in FIGS. 9(c) and 11 described above, the widened portion 17 of the connecting member 5 is in a state of spreading upward, so this serves as a guiding path and a guiding route for guiding the lower edge of the second cylindrical body 4 into the upper groove portion 21, facilitating the connection work of the second cylindrical body 4 to the first cylindrical body 3.

[0031] Next, as shown in FIG. 2, a lid body 6 is placed on the second cylindrical body 4. As a result, the box 1 that covers the article (not shown) on the pallet 2 is assembled on the pallet 2.

[0032] Also, although different from the content shown in FIG. 1, if four connecting members 5 to be used are provided, and the connecting members 5 are provided at the center of the upper edge on each short side surface 10S and each long side surface 10L of the first cylindrical body 3, compared with the example in FIG. 1, with the four connecting members 5 which are fewer in number, the effect of reinforcing the folded line 11 portion and the central portion of the easily foldable long side surface 10L can be obtained.

[0033] The disassembly procedure (unpacking procedure) of the box 1 of the first embodiment will be described with reference to FIGS. 12 to 19. In FIGS. 12 to 19, it is assumed that the article is fixed on the pallet 2 before the disassembly of the box 1. For the sake of convenience, the article is not shown in the drawings and will be referred to as appropriate in the description.

[0034] FIG. 12 shows a state in which the assembled box 1 surrounds the article attached on the pallet 2. In this state, the pallet 2 is lifted and moved by a forklift or the like, loaded onto a container, a truck bed, etc., and transported to the destination. In the case of long-distance transportation, etc., a curing film may be wound from the outside of the box 1, and further a band may be wound from above the film.

[0035] As shown in FIG. 13, at the destination, the article packed in the pallet 2 and the box 1 is unpacked. First, the lid 6 is removed.

[0036] As shown in FIG. 14, the second cylinder body 4 is removed from the first cylinder body 3, and then the first cylinder body 3 is removed from the pallet 2. This operation can be performed by a single operator and can be performed in a narrow space. Thereafter, the article is removed from the pallet 2 and moved to another place.

[0037] As shown in FIG. 15, the first cylinder body 3 and the second cylinder body 4 are folded and flatly stacked on the pallet 2. Here, the first cylinder body 3 and the second cylinder body 4 are folded such that the folding line 11 parallel to the height direction provided at the center of the short side surface 10S protrudes inward of the cylinder, and the heights of the first cylinder body 3 and the second cylinder body 4 are shorter than the short side of the stopper 9 of the pallet 2. For this reason, in the folded form, the first cylinder body 3 and the second cylinder body 4 do not have a longitudinal dimension longer than the long side of the pallet 2, nor do they have a short-side dimension longer than the short side of the pallet 2. Therefore, the folded first cylinder body 3 and the second cylinder body 4 can be stacked and accommodated on the pallet 2 without protruding outside the pallet 2. In FIG. 15, eight connecting members 5 remain attached to the first cylinder body 3, and the first cylinder body 3 is stacked on the second cylinder body 4. However, only a part of the connecting members 5 of the upper first cylinder body 3 is shown for the sake of convenience.

[0038] As shown in FIGS. 16 and 17, a lid body 6 is further placed on the first cylindrical body 3 and the second cylindrical body 4 that are folded and stacked on the pallet 2.

[0039] As shown in FIG. 18, a lashing belt 22 is wound around the upper surface of the lid body 6 and the lower surface of the pallet 2 to tie all the members together so that the whole is minimized.

[0040] According to the box 1 of the first embodiment described above, when the first cylindrical body 3 and the second cylindrical body 4 are folded along the folding lines 11 to be in a flat state and then stacked and placed on the pallet 2, they can be accommodated within the outer shape range of the pallet 2 without protruding outside the pallet 2. Then, by placing the lid body 6 thereon and tying the whole with the lashing belt 22, it is possible to make a compact and easy-to-handle shape with the outer shape of the pallet 2 as the maximum outer shape. For this reason, the storage and return of the box 1 after taking out the article are facilitated. In particular, when returning, the volume when storing in a container or the like can be minimized, so the transportation cost is also minimized.

[0041] The box 100 of the second embodiment will be described with reference to FIG. 19. The box 100 of the second embodiment is formed by connecting a third cylindrical body 30 to the second cylindrical body 4 of the box 1 of the first embodiment with a connecting member 5 and covering the top of the third cylindrical body 30 with a lid body 6. The size, material, etc. of the third cylindrical body 30 with respect to the pallet 2 are the same as those of the first and second cylindrical bodies 3 and 4 of the first embodiment. According to this three-stage box 100, even if the height of the article to be placed and fixed on the pallet 2 is higher than that in the case of the first embodiment, it can be stored in the box 100. Also, by disassembling the box 100 and stacking it on the pallet 2, although the height is slightly larger than that of the box 1, it can be made into a compact outer shape that does not protrude from the pallet 2, which is the same as the first embodiment.

[0042] Thus, according to the box 1,100 of the embodiment of the present invention, based on the two-stage structure of the first embodiment, according to the height of the article placed and fixed on the pallet 2, the height can be arbitrarily set with the height of one stage as one unit. That is, on the second cylinder body 4, a third cylinder body 30 similar to this is stacked (second embodiment), and further, if necessary, on the third cylinder body 30, a fourth cylinder body similar to this is stacked, so that the number of stages of the cylinder body can be arbitrarily increased, and the height of the box 100 can be increased step by step.

Explanation of Signs

[0043] 1,100…Box 2…Pallet 3…First cylinder body 4…Second cylinder body 5…Connecting member 6…Cover body 11…Folding line 15…Sheet material of the connecting member 16…Leaf spring which is the spring material of the connecting member 17…Width expanding part of the connecting member 20…Lower groove part of the connecting member 21…Upper groove part of the connecting member 30…Third cylinder body

Claims

1. A box (1, 100) placed on a pallet (2) for storing articles on the pallet, comprising: A foldable first cylinder (3) placed on the pallet; A foldable second cylinder (4) disposed on the first cylinder; A connecting member (5) for detachably connecting the first cylinder and the second cylinder; A lid (6) covering the second cylinder; The box (1, 100) characterized by comprising the above.

2. The box (1, 100) according to Claim 1, wherein the connecting member (5) has a lower groove portion (20) into which an upper edge of the first cylinder (3) is inserted by a predetermined length, and an upper groove portion (21) into which a lower edge of the second cylinder (4) is inserted by a predetermined length.

3. The box (1, 100) according to Claim 2, wherein the connecting member (5) has a pair of plate members (15) connected by a spring member (16) at a predetermined interval, the lower groove portion (20) opens at a lower end of the plate member, the upper groove portion (21) opens at an upper edge of the plate member, and an expanding portion (17) with an expanding groove width is provided at the upper edge of the plate member.

4. The pallet (2), the first cylinder (3), and the second cylinder (4) are rectangular in a plan view, The first cylinder and the second cylinder each have a folding line (11) parallel to the height direction at the center of the short side of the rectangle, The box (1, 100) according to Claim 1, wherein the height of the first cylinder and the second cylinder is set to be shorter than the length of the short side of the rectangle.

5. The box (1, 100) according to Claim 4, wherein at least a part of the connecting member (5) is in a state where the assembled box (1, 100) has an upper edge of the first cylinder (3) provided with the folding line (11) inserted into the lower groove portion (20), and a lower edge of the second cylinder (4) provided with the folding line inserted into the upper groove portion (21).

6. The box (1, 100) according to Claim 4, wherein the same structure as that formed by the first cylinder (3) and the second cylinder (4) detachably connected by the connecting member (5) is provided in any number of stages on the second cylinder.

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