JPH06298245A - Foldable box - Google Patents

Abstract

PURPOSE:To fold a box compactly and maintain a sufficient strength at the time of setting up by a method wherein when a first side wall is folded by a hinge, trapezoid parts and triangular parts of the bottom part are folded inside of the box simultaneously. CONSTITUTION:The foldable box consists of a pair of first side walls 1 which are formed to be foldable inward by a hinge at the center, and second side walls 3 which are arranged to be adjacent to the fist side walls 1. These adjacent side walls 1 and 3 are foldably connected by hinges 5, 6 respectively with a connecting member 4. Also, a bottom plate part is constituted by arranging two of trapezoid parts 7 and right angular triangle parts 8 which can be folded inward by a folding part 9 to each other. Then, a base 7a of the trapezoid part 7 is inward foldably connected to the side wall 3 by a hinge, and the one edge of the right angular triangle part 8 is inward foldably connected to the trapezoid part 7 by the folding part 9, and the other edge 8a is inward foldably connected to the lower end of a half of the side wall 1 with the hinge 2 as a border.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable box made of cardboard or other cardboard or synthetic resin plate.

[0002]

2. Description of the Related Art Most conventional corrugated cardboard boxes that can be folded are formed by bending and combining parts whose bottoms extend from four side walls, and when folding, extend them and between the side walls. It has a structure that can be folded and folded.

[0003]

The foldable cardboard box as described above has a bottom formed of a combination of four small pieces extending from the side wall, and therefore, when a heavy and weak bottom is accommodated in the bottom, Is often omitted.

Furthermore, the force applied to the box in an oblique direction is weak, and the four side walls are laterally offset from each other, and the entire box is often twisted.

Further, since it folds between the side walls, it becomes laterally long even when folded, and the occupied area does not become so small.

It is an object of the present invention to provide a foldable box which is made of cardboard or other cardboard or a thin synthetic resin plate and has sufficient strength when assembled and has a small area when folded. .

[0007]

SUMMARY OF THE INVENTION A box of the present invention comprises two opposing first sidewalls, two second sidewalls located between the first sidewalls and opposing each other, and a first sidewall. And a second side wall, which are connected to each other by a hinge and are connected to each other by a hinge, and a bottom plate at the lower end of these connecting members.
The side wall of the has a hinge that bends in the longitudinal direction in the center, and the bottom plate has a trapezoidal portion that is foldably connected to the lower end of the second side wall and a foldable connection to the lower end of the first side wall. And a small hole is provided near the lower end of each connecting member of the bottom plate, and at the same time the first side wall is bent by the hinge, a trapezoidal part and a triangular part of the bottom plate are formed. It is designed to be folded by folding the inside of the box. Further, a reinforcing plate having one end joined to the lower end of one of the second side walls is provided to reinforce the bottom plate and the box itself.

As will be described in detail in the other embodiments described below, the box of the present invention can be modified in various ways based on the above-mentioned structure. These modified examples can also achieve the object of the present invention and have more excellent characteristics.

[0009]

EXAMPLES Next, each example of the foldable box of the present invention will be described.

1 to 5 are views showing a first embodiment of the present invention. Of these figures, FIG. 1 is a perspective view of the box assembled, FIG. 2 is a top view of the box of the first embodiment assembled as shown in FIG. 1, and FIG. It is the figure seen. FIG. 4 is a diagram showing a state in which the box is being folded, and FIG. 5 is a diagram showing a state in which the box is folded.

As shown in these figures, the box according to the first embodiment of the present invention comprises a pair of first side walls which are arranged so as to be bent inward at a central hinge 2 and which are arranged at positions opposite to each other. 1 and a pair of second side walls 3 arranged adjacent to and facing the first side walls 1, respectively,
Both the first side wall 1 and the second side wall 3 adjacent to each other are foldably connected by hinges 5 and 6 via a connecting member 4 which is vertically elongated. Further, the bottom plate portion has a configuration in which two portions each of which is formed by a trapezoidal portion 7 and a right-angled triangular portion 8 that are bent inward at the folding portion 9 are arranged side by side, and the bottom side of the trapezoidal portion 7 (the longer one The side) 7a can be bent inwardly with respect to the second side wall 3 by a hinge, and the right-angled triangular portion 8 has one side thereof bent at the bent portion 9 to the trapezoidal portion 7 and the other side. One side 8a is connected to the lower end of the half of the first side wall with the central hinge portion 2 as a boundary so that it can be bent inward. Further, the upper sides (shorter sides) of the two trapezoidal portions 7 are in contact with each other. In this embodiment, the overlapping portions 7b are formed so that one overlapping portion 7b is located inside the other trapezoidal portion and the other overlapping portion 7b is located inside the one trapezoidal portion so that they do not separate from each other. It is like this. As will be described later, 12 is a hole formed so that the bottom plate and the like can be bent, and 13 is a reinforcing plate that is foldably connected to one lower end of the second side wall.

An overlapping portion similar to the overlapping portion 7b of the trapezoidal portion is formed on the sides 8b of the right-angled triangular portion 8 which are in contact with each other, and the adjacent right-angled triangular portions are engaged with each other so that they are engaged with each other. If so, the sides of the two bottom plates extending from the two second walls which are in contact with each other, that is, the right-angled triangular portion 8, the trapezoidal portion 7, and the central lines of the right-angled triangular portion which are in linear contact with each other are Even in the part of (1), it is engaged and locked, and even if the bottom plate is pushed up by the force from below, it will not be lifted and therefore will not be bent. Further, a locking piece (for example, a thin band made of a strong material) extending in a direction perpendicular to the sides of the trapezoidal portion 7 which are in contact with each other or the sides 8a of the right-angled triangular portion 8 which are in contact with each other is attached to the side with which the contact is made. I may lock them by fixing their tips. This locking piece has one end fixed to one bottom plate (trapezoidal portion, triangular portion) by adhesion or the like, and the other end is appropriately connected to the bottom plate (trapezoidal portion, triangular portion) on the other side. ). Further, even if a tape which can be peeled off relatively easily is stuck on the joint portion of the bottom plate so as to connect both bottom plates, the tape can be locked similarly.

When any one of the above locking means is used,
The reinforcing bottom plate 13 may not be used, but it is more preferable to use the reinforcing bottom plate 13 in terms of the strength of the entire box.

The first embodiment is assembled as a box shown in FIG. 1 and is folded as shown in FIG. A folding method for folding from FIG. 1 to FIG. 5 in this way will be described below.

In the box assembled as shown in FIG. 1, after the reinforcing plate 13 is erected on the side of the second side wall 3, the overlapping portions 7b are removed and the bent portion 6 of the rear bottom plate portion is folded. The trapezoidal portion 7 and the right-angled triangular portion 8 are bent inward, and at the same time, the first side wall 1 is bent inward by bending its hinge portion 2. By folding in this way, it is folded as shown in FIG. In FIG. 3, the outer chain line x
Shows the size of the outside as seen from above the box when assembled in a box shape as shown in FIG.

As shown in FIG. 3, the trapezoidal portion 7 and the right-angled triangular portion 8 enter inward (upward), and the first side wall 1 bends inward. Here, the holes 12 formed at the four corners of the bottom of the box enable folding even if the first side wall 1, the trapezoidal portion 7, and the right triangle portion 8 have a certain thickness.

From the state shown in FIG. 3, by further folding, the first side wall 1 is completely bent at the hinge portion 2 and overlaps with each other, and the trapezoidal portion 7 and the right triangle portion 8 also overlap with each other. By overlapping the side wall 1 and the second side wall 3 with each other, they are completely folded as shown in FIG.

Further, from the folded state as shown in FIG.
By performing the reverse operation, the state of FIG. 1 can be obtained, and the reinforcing plate 13 is completely overlapped with the bottom plate portion, so that the assembly of the box is completed. Here, it is sufficient for the holes 12 at the four corners to be as small as the width of the elongated connecting member 4, and there is no problem unless the articles to be stored in the box are extremely small.
However, if a cover 14 is provided as shown in FIG. 6, small articles can be stored. Also, when the box is folded, there is no problem because it is bent at 15.

FIG. 7 shows a modification of the first embodiment described above.
The second side wall 3 in which the connecting members 4 and 4'have different widths and face each other
Shows a state in which boxes with different lengths are folded.
As shown in this figure, the length of the second side wall can be reduced by widening the width of the connecting member even if the area of the bottom surface when assembled as shown by the chain line x is substantially the same. Therefore, by widening the width of all the connecting members, the thickness becomes large but the length becomes small when folded.

The first embodiment described above is a box without a lid. In such a box without a lid, it is necessary to put a plate or the like between them when stacking them. The second embodiment shown below is
It is a box without a lid and can be stacked.

8 to 10 are views showing this second embodiment, FIG. 8 is a perspective view of a box assembled state, and FIG. 9 is FIG.
FIG. 10 is a view (plan view) of the box from above, and FIG. 10 is a view showing a state in which the box is being folded.

In these figures, the shapes and configurations of the first side wall 1, the second side wall 3, the connecting member 4, the bottom plate portion (trapezoidal portion 7, triangular portion 8) and the like are substantially the same as those in the first embodiment. Parts that are the same and have the same part numbers as in FIG. 1 and the like have the same structure and function as those of the first embodiment.

In the second embodiment, the stacking support portion 16 is attached to the inside of the connecting member 4 in FIGS. 8 and 9 on both sides thereof to the first side wall 1 and the second side wall 3, respectively. It was fixed in. Also, this stacking support portion 16
Is configured to be vertically bendable at its center 17.

In the second embodiment, by fixing the stacking support portion 16, it becomes easy to stack the same box on this box, and not only in the vicinity of the connecting member 4, but also in the first box. The reinforcing action of the second side walls 1 and 3 increases the load resistance, and sufficient strength can be obtained even when stacked.

The folding means of this second embodiment is basically the same as that of the first embodiment, but the folding is not hindered by folding the stacking support portion as follows. ing.

That is, by folding the state shown in FIGS. 8 and 9 by the same means as in the first embodiment, the state becomes the same as that shown in FIG. 3 shown in FIG. Here, the stacking supporting portion 16 is folded at the folding portion 17 and enters the corner, and the stacking supporting portion 16 can be completely folded without any trouble in folding the box. Note that the stacking support portion 16 does not extend to the bottom as shown in FIG. 8 and is halfway in order to facilitate folding of the reinforcing plate 13.

FIG. 11 is a perspective view showing a third embodiment.
A stacking support portion 18 having another shape fixed to each of the upper ends of the connecting portions of the first and second side walls by means such as bonding is provided, and is bent at 19.

Also in the third embodiment, since the stacking supporting portions 18 are provided at the four corners of the upper end, stacking is possible.

The folding operation of the box is exactly the same as that of the first and second embodiments. When the box is folded, the stacking support portion 18 is folded to the box side from 19 points and the whole is folded. .

FIGS. 12 and 13 are views showing the essential parts of a fourth embodiment of the box of the present invention, which is an embodiment having a stacking support portion as in the second and third embodiments. The stacking support part of this embodiment has a receiving part so that the upper and lower boxes do not shift when stacked. That is, FIG.
In FIG. 13, the stacking support portion 21 has a fitting portion 22 and a receiving portion 23, and is configured to be bent at hinge portions 24 and 25. In this embodiment the stacking support 2
1 is fixed to the corner portion of the box by fitting the fitting portion 22 to the side walls 1 and 3. Also, the box portion is the same as the other embodiments, and the folding method is also the same, and the stacking support portion 21 is folded as shown in FIG. 12 when folding.

That is, in this embodiment, the stacking support portion 21 is bent at the hinge portions 25 and 24, so that when the box is folded, the stacking support portion 21 is bent as shown in FIG. Therefore, when the boxes are folded, the stacking support portion 21 is located inside the second side wall 3. Therefore, when stacking the boxes after folding, this stacking support 2
1 does not get in the way, and other boxes that are stacked do not open the boxes by pushing the receiver 23 of the stacking support portion 21. For the above reason, in this embodiment, the hinge 24 is provided at the illustrated position.

The stacking support portion 21 is made of synthetic resin by using a molding method such as injection molding, and is made up of two parts 21.
It is made by combining A and 21B at the hinge portion 25, but it is also possible to form them as one by integrating them, and at that time, the hinge portion needs to be cut and made thin.

Although the above embodiment is a box without a lid, it may be provided with a lid. The following example relates to a box with a lid.

14 to 16 are views showing a fifth embodiment. The fifth embodiment has a lid 30 formed integrally with one of the second side walls 3 as shown in FIG. The lid 30 has two first claws 31 and a second claw 32 having a lock piece 32a. Further, a first frame 33 is provided at the upper ends of the two first side walls 1, and a second frame 34 is provided at the other second side wall 3 where the lid 30 is not provided. Further, a first fixing hole 35 is provided at the boundary between the first frame 33 and the first side wall 1, and a second fixing hole 36 is provided at the boundary between the second frame 34 and the second side wall 3. Has been formed.

In the fifth embodiment, as shown in FIG. 14, the first frame 33 and the second frame 34 are bent inside the box,
Further, as shown in FIG. 15 and FIG.
16 is inserted into the first hole 35 and the second claw 32 is inserted into and fixed to the second hole 36, the lid can be closed as shown in FIG.
Here, a lock side 32a is formed on the second claw 32, and the lock side 32a is inserted into a hole 37 formed in the second side wall 3 as shown in FIG.
Will not open. When folding next, lock side 32a
If is pressed with a finger or the like, the lock is released, the second claw 32 can be removed, and the lid 30 is opened. Lid 30 here
After folding the box as shown in FIG. 14 and raising the frames 33 and 34, the box can be folded by the reverse operation to the operation when assembling the box as in the other embodiments. That is, the first side wall 1
18 can be folded by exactly the same method as the case of folding the box of the first embodiment.
become that way. Here, if the structure of the box has a structure in which the widths of the connecting members are different as shown in FIG.
The nail 31 can be inserted into the.

In this embodiment, as in the example shown in FIG. 7, the width of the connecting member 4 is different and the length of the second side wall is shorter on one side, but as shown in FIGS. It is also applicable to a box in which the connecting members 4 have the same width and thus the opposite second side walls have the same length. That is, one connecting member has a hole 38
By forming a hole corresponding to, the claw 31 may be inserted into this.

Generally, a product made of corrugated cardboard has a restoring force when it is bent. Therefore, the box of the present invention also bulges due to this restoring force after being folded. However, in the fifth embodiment, this can be prevented by inserting the first claw 31 into the hole 38.

19 to 21 are views showing a sixth embodiment, which is another example of the box with the lid. As shown in FIG. 19, in this sixth embodiment, lids 40 and 42 are provided at the upper ends of both the second side walls so as to be bendable. The lid 40 has a fixing hole 41 and a lid 42. The claw 43 is formed. A frame 44 having a hinge at the center is connected to the upper end of the first side wall 1 so as to be bendable with respect to the first side wall 1. Grooves 45 are formed in these frames 44 at positions where the ends of the frames 44 are located (contacted with each other) when the lid 40 and the lid 42 are closed. The basic structure of the other boxes is the same as that of the first embodiment and the like.

Since the sixth embodiment has a construction as shown in FIG. 19, if the frame 44 is folded inward after the box is assembled and the lids 40 and 42 are closed, the result is as shown in FIG. That is, insert the tip 40a, 42a of the lid into the groove 45, and
3 is inserted into the hole 41 and the lid is fixed. Further, when the box is folded, in the state shown in FIG. 19, the lids 40 and 42 are tilted to the opposite sides, and when the first side wall 1 is folded by the hinge 2, the frame 44 is also folded so as to be different from the other embodiment. It can be folded in the same manner and is folded as shown in FIG. If you attach the elastic belt 46 here,
This can be used to prevent the folded box from returning.

22 and 23 are views showing means for preventing the displacement when the folded boxes are stacked.
In FIG. 22, when the folded upper and lower boxes 50 are stacked, the box 50 located on the lower side is provided with the anti-slip projections 51 which are higher toward the center at the four corners of the one surface. On the contrary, a protrusion 52 for preventing slippage is formed on the contrary.
The shift-preventing protrusions 52 are located just inside the shift-preventing protrusions 51 when the 50 'are overlapped. As a result, when the boxes 50, 50 'are stacked, as shown in FIG. 23, the shift preventing projections 51, 52 are prevented from abutting each other and the boxes 50, 50' are prevented from being displaced from each other. Further, by forming the protrusions 51 and 52 on both the front and back sides of the box, a large number of boxes can be stacked without shifting.

FIG. 24 shows a method of forming the shift preventing projection. These figures show, for example, a part of the second side wall 3 of the box shown in the embodiment, and one side (the side indicated by 51a in FIG. 24) of the U-shaped cut is formed in the side wall. B) is a diagonal cut as shown by YY, and is further pushed up from the lower side of (B) so as to be shown in (C). As a result,
The shift prevention protrusion 51 as shown in FIG. Similarly, the shift preventing projection 52 is also formed.

FIGS. 25 and 26 show an example of the arrangement of the shift-preventing protrusions, where (A) is the front surface and (B) is the back surface. Of these drawings, FIG. 25 has the same arrangement as FIG. 22, and FIG.
Is another arrangement example.

These shift preventing protrusions are the protrusions 5 on one side.
Although the one end 51a is arranged so as to abut the end 52a of the other protrusion 52, by forming the protrusion in the same direction at the same position, for example, one protrusion 51 shown in FIG. If another protrusion 52 is located in the concave portion 53 shown in FIG. 2 and the direction thereof is, for example, the protrusion 51 of the box 50 shown in FIG. It can be prevented.

In each of the above embodiments, it is assumed that a cardboard or a relatively thin synthetic resin plate is used. However, in this type of box, it is necessary to form a heat insulating material in order to store frozen products and the like, and it may be necessary to use a thick foamed resin plate.

An embodiment of a foldable box using a thick foamed resin plate for heat insulation or a thick plate for other reasons is the seventh embodiment shown in FIGS. 27 to 30. Also in this embodiment, the first side wall 1 and the second side wall 3 which are bent inward by the hinge 2 are connected to the hinge 5 by the connecting member 4.
It is foldably connected by 6. Also, the bottom portion has a trapezoidal portion 7 and a triangular portion 8 as shown in FIG.
Are connected by a connecting plate 60, and the plate-shaped portions are connected by hinges 61, 62, 63, etc., respectively so as to be bendable,
As a result, even if the trapezoidal or triangular portions 7 and 8 are made of thick plates, they can be folded inward and the box can be folded. FIG. 29 is a view of the box seen from the bottom side, and 65 and 67 are high and hinges 61 and 62 have the lowest concave shape so that they can be bent even when the triangular parts 7 and 8 are made of thick plates. . That is, the back side of the connecting plate 60 has a triangular cross-section, and the back side of the trapezoidal portion 7 and the triangular portion 8 has a slope on the side where the connecting plate 60 and the connecting plate 60 contact each other. Connected to the connecting plate 60 with a hinge 6
It is 1,62. Therefore, even when the triangular portions 7 and 8 are folded from the hinges 61 and 62 and the triangular portions 7 and 8 fall inward, the inclined surfaces 66 and 67 and the inclined surfaces 68 and 69 can be folded by approaching each other. 28 and FIG. 30 are both in the state of being folded, and after passing through these states, FIG.
It folds like 1.

Further, a concave fitting portion 1c and a convex fitting portion 1d as shown in the drawing are formed on the first side wall 1 so that both fitting portions 1c, 1d are fitted to each other when the box is folded. For example, it can prevent accidental opening when the box is folded.
When assembling the box, if the first side wall 1 is separated, the fitting can be easily removed.

32 and 33 are views showing an eighth embodiment which is based on the folding method of the present invention and which is modified. In this embodiment, the first side wall 1 is a single plate that does not use a hinge, and therefore is not bendable, and the connecting member 4 is only two diagonally opposed, and the trapezoidal portion and the triangular portion are formed. Triangular shape 7, which is different from the other embodiments,
8, the structure is simple as a whole.

Also in the eighth embodiment, as shown in FIG. 33, like the other embodiments, the triangular portion 7 forming the bottom,
By folding 8 inward, the box can be folded. However, since it is folded at an angle, the area after folding is relatively large, but it has the features of simple structure, easy folding, and low cost.

In the box of the eighth embodiment, when a force is applied from the outside of the connecting member 4 toward the center of the box, the triangular portions 7 and 8 function as triangular connecting bodies to prevent deformation. Hard to deform. However, when a force is applied toward the center from the two corners where the connecting member 4 does not exist, it deforms relatively easily. In order to prevent this, it is known that the overlapping portion formed on the triangular portion 8 is extended to the center, that is, to the upper surface of the triangular portion 7 so as to mesh with each other to prevent deformation. However, even with such a structure, if a stronger force is applied, the bottoms may fold each other, and the meshes may be disengaged and deformed in the folding direction, which may cause an accident during cargo handling and transportation.

The box of the eighth embodiment does not prevent the deformation due to the meshing of the overlapping portions as described above, but prevents the bottom plate from bending up by the reinforcing bottom plate 13 whose one side is rotatable. is doing. The reinforcing bottom plate 13 tightly hits the wall surface on the opposite side to the wall surface on which the signal is applied, so as to prevent it from being lifted. However, if the locking means for the bottom plate for reinforcement is provided, the bottom plate for reinforcement can prevent the bottom plate from being lifted. Furthermore, the reinforcing bottom plate 13
Since the side wall of the box is prevented from bending, it will not be deformed or bent even if a strong force is applied to the box. Further, when the reinforcing bottom plate 13 is erected, if it is accommodated within the width of the connecting member 4, folding is simplified. In addition, since the reinforcing bottom plate 13 and the bottom plate form a double bottom, the bottom itself is strong and can accommodate a heavy object. Even when a small object or powder is stored, it does not leak.

[0051]

The box of the present invention has a simple structure, a small area when folded, and sufficient strength when assembled.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention in an assembled state.

FIG. 2 is a plan view of the assembled state of the first embodiment of the present invention.

FIG. 3 is a bottom view of the assembled first embodiment of the present invention.

FIG. 4 is a plan view of the first embodiment of the present invention in the state of being folded.

FIG. 5 is a plan view of the first embodiment of the present invention in a folded state.

FIG. 6 is a perspective view of a box provided with covers for closing the holes formed at the four corners of the first embodiment of the present invention.

FIG. 7 is a plan view showing a modified example of the first embodiment of the present invention in a folded state.

FIG. 8 is a perspective view of a second embodiment of the present invention in an assembled state.

FIG. 9 is a plan view of a second embodiment of the present invention in an assembled state.

FIG. 10 is a plan view showing a state in which the second embodiment of the present invention is being folded.

FIG. 11 is a perspective view showing an assembled state of the third embodiment of the present invention.

FIG. 12 is a perspective view showing an essential part of an assembled state of a fourth embodiment of the present invention.

FIG. 13 is a perspective view showing a main part of a fourth embodiment of the present invention in the state of folding.

FIG. 14 is a perspective view showing an assembled state of a fifth embodiment of the present invention.

FIG. 15 is a perspective view showing a state in which the lid of the fifth embodiment of the present invention is being closed.

FIG. 16 is a perspective view of a fifth embodiment of the present invention with a lid closed.

FIG. 17 is a view showing a locking means of a lid according to a fifth embodiment of the present invention.

FIG. 18 is a perspective view of a fifth embodiment of the present invention in a folded state.

FIG. 19 is a perspective view showing an assembled state of the sixth embodiment of the present invention.

FIG. 20 is a perspective view of a sixth embodiment of the present invention with a lid closed.

FIG. 21 is a perspective view of a sixth embodiment of the present invention in a folded state.

FIG. 22 is a view showing a shift preventing means when stacking the boxes of the present invention in a folded state.

FIG. 23 is a side view showing a state where the boxes provided with the shift preventing means of the present invention are stacked.

FIG. 24 is a diagram showing a method for forming a shift-preventing protrusion provided on the box of the present invention

FIG. 25 is a view showing an arrangement example of protrusions for preventing shift of the box of the present invention.

FIG. 26 is a view showing another arrangement example of the box deviation preventing projections of the present invention.

FIG. 27 is a view showing an assembled state of the seventh embodiment of the present invention.

FIG. 28 is a view showing a state in the middle of folding according to the seventh embodiment of the present invention.

FIG. 29 is a perspective view of the assembled state of the seventh embodiment of the present invention as seen from the bottom plate side.

FIG. 30 is a perspective view of the seventh embodiment of the present invention seen from the bottom plate side in the state of being folded.

FIG. 31 is a perspective view showing a folded state of the seventh embodiment of the present invention.

FIG. 32 is a perspective view of an assembled state of the eighth embodiment of the present invention.

FIG. 33 is a perspective view of the eighth embodiment of the present invention in the state of being folded.

[Explanation of symbols]

 1 1st side wall 2 Hinge 3 2nd side wall 4 Connecting member 5 Hinge 6 Hinge 7 Trapezoidal part 8 Triangular part 12 Small hole 13 Reinforcement bottom plate

Claims (10)

[Claims] 1. A pair of first side walls, which can be bent inward along a straight line extending in a longitudinal direction by a hinge at a central portion arranged to face each other, and are located between the two first side walls, and are opposed to each other. Two side walls arranged in parallel, and a connecting member for connecting the first side wall and the second side wall by connecting the side wall between the first side wall and the second side wall and connecting them by a hinge, Two trapezoidal or triangular parts connected to the lower ends of both second side walls by hinges so that they can be bent to the side wall side. Four trapezoidal parts connected to each other and one trapezoidal part and a bottom plate connected to both ends by bent parts respectively, and a reinforcing portion or a reinforcing plate or bottom plate part having an effect of preventing bending of the bottom plate are locked to each other. And the small part near the connecting member on the bottom plate. A foldable box that features a piercing hole. 2. The collapsible box according to claim 1, wherein a foldable stacking support portion is provided between the first side wall and the second side wall. 3. The collapsible box according to claim 2, wherein the stacking support portion is vertically bendable, and both ends thereof are adhered to the first side wall and the second side wall, respectively. 4. The collapsible box of claim 2, wherein the stacking support is inwardly foldable and adhered to the upper ends of the first and second side walls. 5. The stacking support portion is a hinge portion whose center is bendable, and has a fitting portion and a receiver at both ends, and the fitting portion is provided at upper end portions of the first side wall and the second side wall. The foldable box according to claim 1, which is fitted and fixed. 6. A lid foldably provided at one upper end of the second side wall and having a claw, and a first inwardly bent top end of the other second side wall and two first side walls. The foldable box according to claim 1, wherein a second frame is provided, and a bent hole of the frame has a fixing hole into which a claw is inserted when the lid is closed. 7. A lid which is provided on one side so as to be bendable to a second side wall and has a claw, and a fixing which is provided so as to be able to be bent on another second side wall and into which the claw is inserted. The collapsible box of claim 1 having another lid with a hole. 8. The foldable box according to claim 1, further comprising a foldable cover that closes a hole formed near the connecting member of the bottom plate. 9. One of the second side walls has a plurality of first protrusions on the outer surface, and the other second side wall has a plurality of second protrusions on the outer surface, and the second side wall is folded. 9. The collapsible box according to claim 1, wherein the first projection and the second projection are engaged with each other when the two boxes in the state are stacked on each other. 10. Two first side walls made of planks that can be bent inward along a straight line extending in the longitudinal direction by opposed central hinges, and are located between both first side walls. Two second plates made of planks placed opposite each other
A side wall of the first side wall and a second side wall, and a connecting member for connecting the first and second side walls by connecting the first side wall and the second side wall by a hinge. Connected to the side wall side by hinges at the lower side and the lower side of the first side wall with the hinge as the boundary Four triangular parts made of thickened plates, a trapezoidal or triangular part extending inward from each of the connecting members and connected to the second side wall on both sides thereof, and one triangular part extending from the first side wall And a bottom plate consisting of a connecting plate made of a thick plate connected by a hinge,
A foldable box, characterized in that at least the hinges on both sides of the connection side of the bottom surface of the bottom plate are concave so that the hinges are deepest.