JPH04267742A - Returnable container - Google Patents

Abstract

PURPOSE:To permit the one piece returnable container made of synthetic resin to be arranged in three stacking patterns, i.e., a high pile, a low pile and a crosswise pile in two parallels. CONSTITUTION:A first vertical groove 21 and a first locking recess 24 are formed in one short side wall 20 and a second vertical groove 22 and a second locking recess 25 corresponding thereto are formed in the other short side wall 20. The second grooves 21b and 22b engageable with the flange parts 11 of a long side wall 10 are formed in the bottom parts 21a and 22a of the first vertical groove 21 and the second vertical groove 22, respectively. A bottom wall 30 is provided in its center with a first groove 31, with which the two flange parts 11 of the long side wall 10 are engageable.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called two-way type box for storing foods and the like.

0002

[Prior Art] In recent years, in product distribution processes and production factories, large quantities of products or parts are transported or stored in certain boxes, and the boxes used in such cases are By forming the container into a certain shape, it is possible to facilitate operations such as transporting and storing products. In particular, resources have been used more effectively by making the box itself a so-called two-way type box.

[0003] With such boxes, products are first stored and then stacked (so-called stacking) as shown in FIG. Since it is necessary to maintain a stable state, a structure such as that proposed in, for example, Japanese Utility Model Publication No. 45-24353 has been adopted. What is shown in this publication is that ``the inner dimension of the longer side wall is twice the outer dimension of the shorter side wall, the height is equal to the inner dimension of the shorter side wall, and A rectangular container having a protrusion on the upper edge of each corner, and a recess that can fit into the protrusion on the four peripheral corners of the bottom and the center of the long side. Since a protrusion is formed on the upper edge of the corner formed by the above, it is possible to store the two containers at different angles in the two containers butted against each other, and even if the containers can be stacked, for example, as shown in FIG. Stacking (so-called nesting) as shown in the figure is not possible.

[0004] Similarly, the applicant also
In Publication No. 36504, it is stated that ``the long side wall plate of a container with a length ratio of long side wall plate to short side wall plate of 2:1 is divided into 8 equal parts'' as a method that allows stable stacking and parallel stacking. It is divided into unit lengths, and is made to protrude by a length twice the unit length from a position distanced by the unit length from both ends of the upper edge of the long side wall plate and the short side wall plate, and the long side and short side wall plates are A notch of the same size is provided at the same position as the protrusion on the lower edge of the side wall plate, and a recess with a width approximately twice the thickness of the wall plate and a length more than twice the unit length is provided in the bottom plate. A parallel girder is provided so that its longitudinal direction is parallel to the short side wall plate and its center point coincides with the center point of the bottom plate, and the bottom plate is provided so as to protrude from the lower edge protrusion of the wall plate. The company has been proposing "loading containers," but this
"Igeta stacking containers" also cannot be "stacked" sufficiently.

Furthermore, in Japanese Utility Model Publication No. 52-40994, ``a container having a rectangular planar shape, an upper flange around the opening, and an outer rim extending from the bottom wall around the bottom. Each side has a lower tsuba of equal size extending from the side wall, and the lengths of the short side and long side of both tsubas are set in an integer ratio, and the surface including the tsuba is made into a plurality of unit squares of a constant size. It is made divisible, and when the abdomen of the four sides of the unit square is located on the lower tsuba, there is a notch on the edge of the tsuba, when it is located on the bottom wall, there is a groove, and on the upper surface of the upper tsuba there is a notch on the lower tsuba. A stacking container with a ridge along the edge that corresponds to and engages with the opening has been proposed, but this stacking container also has a top flange around the opening and a ridge around the bottom. The lower collar is extended from the bottom wall and has the same outer circumference as the upper collar, each extending from the side wall. Therefore, even though the word "stacked" is used in the name, it is not used here. It is considered that "stacking" as shown in FIG. 13, which is the problem discussed in the above, is not possible.

[0006] In other words, with this type of two-way type box, in order to efficiently store and transport the empty box, it is necessary to place it with the opening facing up and attach it to another box. There is a need for a container that can be stacked by sequentially storing containers in it. It is considered that it cannot be "accumulated".

[0007] Therefore, in order to make this "accumulation" possible, the applicant proposed, for example,
In Publication No. 0, "Four ribs are provided on the outer peripheral surface of the long side wall near the corner formed by the long side wall and the short side wall of rectangular baskets that can be stacked by fitting, and the rectangular baskets can be stacked. In some cases, a downward protrusion for sliding on the upper flange of the long side wall of the lower rectangular cage is provided on each rib on the outer circumferential surface of the long side wall. Four notches are provided on the inner circumferential surface of the long side wall into which the downward protrusions of the outer circumferential surface of the side wall can be inserted, and two longitudinal grooves that are continuous in the vertical direction are provided on the inner circumferential surface of the opposing short side wall. Two vertical ribs are provided on the outer circumferential surface of each short side wall, which fit into the vertical grooves on the inner circumferential surface when the baskets are inserted and stacked. Two shallow recesses that fit and support the lower ends of the vertical ribs on the outer circumferential surface are provided in the upper collar of the short side walls along the inner circumferential surface of each short side wall. A rectangular cage having two recesses adjacent to each other and two longitudinal grooves adjacent to each other inside the two recesses on the other short side wall.
have already been proposed. As a result, by rotating each rectangular basket by 180 degrees, the empty
3 and 12 are fully possible, but unfortunately, this time, the above-mentioned Publication of Utility Model Publications No. 45-24353 and Publication of Utility Model Publication No. 47-3650
It is no longer possible to perform the "cross stacking" method that was possible with the boxes shown in Publication No. 4 and Publication No. 40994/1983. To be more precise, this applicant
- Even in the rectangular basket proposed in Publication No. 1070, the shape is similar to the "parallel stack" shown in Figure 14.
Although it is possible to do so, in this case, sideways sliding is not reliably prevented between the rectangular cages, so it is not possible to actually "stack the cages together."

[0008] That is, in this type of box,
Of course, it is possible to steadily “accumulate” this,
At the same time, it would be extremely convenient if it could be "stacked" and "stacked" without side slipping. In particular, in the distribution process in recent years, large numbers of plastic boxes are being transported and relocated using mechanical power such as forklifts. Being able to "stack them in parallel rows" is a necessary method of stacking because it provides very strong stability during movement and allows work to be done safely and reliably. However, as mentioned above, nothing that could perform all three of the stacking methods described above had yet to be completed.

[0009]Furthermore, this kind of flexible box is generally made of synthetic resin because it is easy to manufacture and clean after use, and it can be provided in large quantities and at low cost in a certain shape. It is something that exists. Therefore,
When a heavy object is stored in a sturdy box made of this type of synthetic resin, the side walls and bottom wall may bend and the dimensions may not be suitable for ``stacking'' or the like. In this case, even if the shape was made so that it could be ``stacked'', there was a risk that it would not be possible to do so easily when actually storing items.

[0010] Therefore, the inventor of the present invention proposed the above-mentioned "accumulation"
The present invention was completed as a result of various studies aimed at devising a smart box that can be reliably used for both "stacking" and "stacking".

[0011]

[Problem to be Solved by the Invention] The present invention has been made based on the above-mentioned actual circumstances and circumstances, and an object to be solved by the present invention is to further improve the usability of this type of flexible box. .

[0012] First, the object of the invention according to claim 1 is to provide a very convenient and easy-to-use box that can be stacked in three ways: ``stacking'', ``stacking'', and ``stacking''. The goal is to provide this through a simple configuration. Furthermore, the object of the invention according to claim 2 is to achieve the same object as the invention according to claim 1, and furthermore, it is possible to achieve the same object as the invention according to claim 1, and furthermore, it is an object of the invention according to claim 2 that the above-mentioned three stacking methods can be The goal is to provide a good box that can reliably perform the following operations in a stable condition.

[0013]

[Means for Solving the Problems] In order to solve the above problems, the means taken by the invention according to claim 1 are explained with reference numerals used in the embodiments. The long side wall 10, the short side wall 20, and the bottom wall 30, each having a length ratio of approximately 2:1 and having flanges 11 and 23 projecting outward on each upper edge, are integrated with synthetic resin. The box 100 has a large upper opening and a larger upper opening than the bottom wall 30, and one of the short side walls 20 has a pair of walls located at both corners thereof, each having a larger upper part and a bottom part 21a. one vertical groove 21 and a collar portion 2 located between both first vertical grooves 21.
3, and the other side of the short side wall 20 has a pair of second engagement recesses 24 formed at a position facing each of the first engagement recesses 24 and having a bottom portion 22a. A vertical groove 22;
A pair of second engaging recesses 25 are formed on the flange 24 at positions facing each of the first longitudinal grooves 21. Furthermore, the bottom wall 30 is provided with A first recessed groove 31 is formed in a penetrating state in the central part located between the side walls 20 and has a width twice as large as the width of the flange 11 that is integral with the long side wall 10. The box 100 is characterized in that each of the second vertical grooves 21 and 22 is provided with a second groove 21b and 22b on the lower surface of the bottom portion 21a and 22b thereof, which can fit into the flange 11 of the long side wall 10. ”.

Further, the means taken by the invention according to claim 2 is similar to the above, as follows: ``Each long side wall 10 has a central portion of its flange 11 curvedly protruding outward, and the bottom wall 30 The box 100 according to claim 1 is characterized in that the center thereof is raised.

[0015]

Effects of the Invention The effects of the smart box 100 according to each claim constructed as described above will be explained in separate sections below.

Regarding the foldable box 100 according to claim 1, first, in this foldable box 100, the upper opening formed by each of the long side walls 10 and the short side walls 20 is larger than the bottom wall 30. , the first vertical groove 21 and the second vertical groove 22 formed in each short side wall 20 are also large at the top, so as shown in FIG. It is possible to "accumulate". In other words, each box has 100
If they are stacked one after another while making the direction the same, each of the first vertical grooves 21 and second vertical grooves 22 of the upper flimsy box 100 will be inside each of the first vertical grooves 21 and second vertical grooves 22 of the lower fluffy box 100. At the same time, the entire upper flexible box 100 fits completely into the lower flexible box 100. This allows each empty box 100 to be "stacked" without creating wasted space.

[0017] In addition, the following embodiment of the sturdy box 100
In this case, the intermediate flanges 12 and 27 are formed approximately at the center of the outer surface of each long side wall 10 and the short side wall 20, respectively, and project outward. 100, and are stacked in a state in which approximately half of them are floating. For this reason, in the case 100 of this embodiment, a certain amount of space is formed between the "stacked"items;
This is convenient when it is necessary to store it in the bottom of the box 100 and cover it with another flexible box 100 for transport. and 27 may not be provided. In addition, since the long side wall 10 and the short side wall 20 of the flexible box 100 in this embodiment are formed with openings 13 and 28 divided into two stages, even when this "stacking" is performed, the next Even when "stacking" is performed, it is possible to easily check from the outside whether or not there are any items left in the flexible box 100 in the "stacked" or "stacked" state.

Furthermore, the "stacking" of the individual boxes 100 is carried out as shown in FIG. 12. In other words, in order to perform this "stacking", each box has to be stacked 10 times.
0 are rotated 180 degrees from each other and stacked one on top of the other. In this case, the bottom 21a of the first vertical groove 21 provided in one of the short side walls 20, as shown in FIG. Second engagement recess 25 on the flange 23 formed on the short side wall 20
, and the bottom 22a of the similar second longitudinal groove 22
engages with the first engagement recess 24. Each first engagement recess 24 and 25 is located at each bottom 22 of the second longitudinal groove 22 and 21.
Since the bottom portions 22a and 21a are completely encased and stored, the bottom portions 22a and 21a will not be shifted laterally. Therefore, in this "stacked" state, each flexible box 100 is firmly positioned with respect to the lower flexible box 100, and each flexible box 100 is firmly positioned relative to the lower flexible box 100.
They are "stacked" in a stable state without any lateral deviation between 0.00 and 0.00. Of course, it goes without saying that when each of the flexible boxes 100 is "stacked", items can be stored in the entire box.

[0019] The fluffy box 100 in this embodiment has the fluffy box 100 on the flange 23 of one of the short side walls 20.
A direction indicating member 23a having a color different from that of the box 0 itself is provided, and the direction of the box 100 is indicated by this direction indicating member 23a. Therefore, by placing the direction indicating members 23a at the same position and stacking each of the flexible boxes 100, "stacking" is automatically performed, and each direction indicating member 23a alternately stacks each of the flexible boxes 100. By stacking the boxes 100, each of the boxes 100 is automatically "stacked".

[0020] According to this flexible box 100, it is possible to perform a "cross stack" as shown in Fig. 14. In other words, in this "cross stacking", two rigid boxes 100 are stacked on top of two parallel rigid boxes 100, rotated by 90 degrees, and the positioning and fixing is performed by placing each rigid box 100 on the upper side. While utilizing one first groove 31 provided on the lower surface of the bottom wall 30, each first vertical groove 21 and 2
The second groove 21 formed in the bottom parts 21a and 22a of 2
This is done by using 22b and 22b. That is, first, the short side wall 2
The second groove 21b or 22b located on the lower surface of the first vertical groove 21 or 22 of 0 is fitted from above, and the two adjacent flanges 11 of the lower two flexible boxes 100 are fitted from above. , into which the first groove 31 formed on the lower surface of the bottom wall 30 of the upper box 100 is fitted. This results in
Each upper flexible box 100 is firmly positioned and fixed to each collar 11 formed on the long side wall 10 of each lower flexible box 100.
0's will be "stacked in parallel" without any positional deviation.

[0021] Each of the 100 boxes that were stacked in parallel
As described above, the boxes 100 are firmly positioned and fixed to each other, but when the items stored in each flexible box 100 are transported using a machine such as a forklift, the so-called cargo may collapse. This allows work to be carried out in a stable condition.

Regarding the airy box 100 according to claim 2, this airy box 100 not only has the functions as claimed in claim 1, but also has the following functions. It is something that

That is, when this flexible box 100 is empty, each of its long side walls 10 is slightly curved outward, as shown by the solid lines in FIGS. 15 to 17, and its bottom wall 30 is in a state where the central part is raised upwards. Even in such a state, there will be no adverse effect on the "stacking" of each of the boxes 100, and "stacking" and "stacking" should be done with objects inside. There are many cases where this occurs, so there is no problem as shown below.

[0024] The above-described structure of the fluffy box 100 according to claim 2 is such that the fluffy box 100 is configured as described above.
This is because the deflection of each long side wall 10 and bottom wall 30 when objects are stored inside is taken into consideration. That is, when an object is stored in the rigid box 100, which is generally made of a relatively flexible material such as synthetic resin, the bottom wall 30 of the object bends downward due to the weight of the object.
In particular, both long side walls 10 bend inward in response to the bending.

[0025] In this regard, the smart box 100 according to the present invention has the configuration described in the above section of the means in advance, so that it becomes a substantially perfect rectangular parallelepiped by bending when an object is stored. Because of this, especially each box 1
When stacking 00, the lower box 100 is placed so that the first grooves 31 and the second grooves 21b and 22b of the upper box 100 can be fitted together without modification.
The flanges 11 formed on both long side walls 10 are linear. Therefore, if the flanges 11 of each long side wall 10 are straight in an empty state and something is stored inside, the central part of each flanges 11 will be bent inward. Although it may not be possible to fit the first recessed groove 31 etc. as it is without touching it with your hands, the airy box 10 according to the present invention
0, when an object is stored in it, Figs.
As shown by the dotted line in FIG. 17, each wall is flat and the whole becomes a rectangular parallelepiped, so this does not happen.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the invention according to each claim will be explained with reference to a light box 100 which is an embodiment shown in the drawings.

First, FIGS. 1 to 6 show so-called six-sided views of a flexible box 100 according to the present invention.
00 is integrally formed from synthetic resin,
The length ratio of the long side wall 10 and the short side wall 20 is approximately 2:1. Moreover, this flexible box 100 has a rectangular opening at the top formed by the long side walls 10 and the short side walls 20, and the long side walls 10 and the short side walls 20 are slightly inclined toward the outside of the opening. There is something to do. In this airy box 100, as shown in FIG. 3, outwardly protruding flanges 11 and 23 are formed on the upper edges of each long side wall 10 and short side wall 20, respectively. The parts 11 and 23 are continuous with each other and constitute one plane.

[0028] In the light box 100 according to this embodiment, as shown in Figs. Intermediate flanges 12 and 27 are formed, and the amount of outward protrusion of these intermediate flanges 12 and 27 is the same as that of the flanges 11 and 23. These intermediate flanges 12 and 27 are provided so that the "stacking" of the foldable box 100 according to this embodiment can be performed by using only half of the "stacking"; This is not necessary if it is carried out in the stored state. In addition, in the flexible box 100 of this embodiment, each long side wall 1
0 and the short side wall 20 are divided vertically by the intermediate flanges 12 and 27, and the openings 13 and 28 are formed in each section, respectively, and the individual boxes 100 are "stacked",
Even when half-stacked, it is easy to see whether there are items inside. Of course, if the intermediate flanges 12 and 27 are not provided, these openings 13 and 28 may be formed as vertically continuous long openings.

Furthermore, as schematically shown in FIGS. 15 to 17, the smart box 100 in this embodiment has each of its long side walls 10 extending from the center of the flange 11 to 0 of the length of the long side walls 10. By projecting outward by .1% to 1%, the bottom wall 30 is slightly protruded outward, and the center portion of the bottom wall 30 is 0.2% to 1% of the length of the long side wall 10. By protruding upward by 2%, the center is slightly raised. The reason why the amount of protrusion of each long side wall 10 is set to 0.1% to 1% of the length of the long side wall 10 and the amount of protrusion of the bottom wall 30 is set to 0.2% to 2% of the length of the long side wall 10 is as follows. This is because if the amount of protrusion and bulge is smaller than these ranges, such a substantial effect cannot be obtained, and if the amount of protrusion and bulge is larger than these ranges,
The first groove 31 also has a flange 1 formed by the second grooves 21b and 22b.
This is because it becomes difficult to fit the parts 1 and 23. Among these, for example, in the case of a bulky box 100 in which the length of each long side wall 10 is about 545 mm, each long side wall 10
The maximum amount of outward curvature (protrusion amount) L is approximately 3 mm,
Furthermore, it is most suitable for making a mold for the flexible box 100, etc., to set the height H of the bottom wall 30 to about 6 mm.

As described above, each long side wall 10 of the smart box 100 in this embodiment is partitioned by the intermediate flange 12.
As shown in FIGS. 1 and 2, the upper side of the long side wall 10 divided by 2 is also divided into a plurality of sections (three in the figure) by forming longitudinal reinforcing ribs 15. Two of them are used as a label pasting part 14 or a marking part. A label that describes the contents of the stored items is literally pasted on the label pasting section 14, and fine protrusions are formed on the surface of the label pasting section 14 so that the label once pasted can be easily removed. (not shown). These label affixing parts 14 or marking parts are formed at point-symmetrical positions on each long side wall 10, so that no matter which way the box 100 is turned, the label affixing parts 14 or marking parts will be at the same position. It's like this.

3 to 11 on each short side wall 20.
As shown in , the first vertical groove 21 or the second vertical groove 22, etc. are formed in the following manner. That is, one of the short side walls 20, for example, located on the right side in FIG.
a pair of first vertical grooves 21 and these first vertical grooves 2
1 and a pair of first engaging recesses 24 formed on the flange 23 located between the two. As shown in FIGS. 3, 7, and 11, each first longitudinal groove 21 is formed integrally with the short side wall 20 so as to protrude from the short side wall 20, and there is no other material inside the first vertical groove 21. The first vertical groove 21 of the good box 100 is inserted from above.

Furthermore, each of the first engaging recesses 24 formed in the collar portion 23 located between these first longitudinal grooves 21 has a bottom portion as shown in FIGS. 3, 7, and 11. They are formed so as to be located below the flanges 23, and when stacking other flexible boxes 100, each of the flanges 23 shown on the left side of FIG. Double vertical groove 22
The bottom portion 22a of the bottom portion 22a is engaged for positioning. Also,
As shown in FIG. 11, engagement protrusions 26 of a predetermined height are protruded from the center of the first engagement recess 24. When the depth of each first engagement recess 24 is approximately the same as that of each first engagement recess 24, a guide member is provided to facilitate engagement of the bottom portion 22a of each second vertical groove 22 when “stacking” other flexible boxes 100. This is the result. In addition, when the height of this engagement protrusion 26 is made to protrude upwards from each first engagement recess 24, this is "
When stacked, the bottoms 22a of the second vertical grooves 22 in other folded boxes 100 are lifted upwards, and in this case, each folded box 100 when placed in the freezer This prevents freezing between 100% and 100%.

[0033] In the light box 100 according to this embodiment, as shown in Figs. Member 23
A is provided. As shown in FIG. 8, the direction indicating member 23a is not formed on the left side of the drawing, and is colored in a color different from the color of the fluffy box 100, for example, red. This clearly indicates the direction of the flexible box 100 when viewed from above. Further, as shown in FIG. 3, etc., a stepped portion is formed on the direction indicating member 23a and the collar portion 23 located inside each of the first engaging recesses 24 described above. Other cute box 1
A part of the bottom wall 30 is engaged when the boxes 00 are "stacked", and this step also makes it possible for the upper box 100 to
It is used for positioning.

The second longitudinal groove 22 and second engagement recess 25 corresponding to the first longitudinal groove 21 and first engagement recess 24 as described above are shown in FIGS. 3, 7, 8, and 10. As shown, it is formed on the other short side wall 20 located on the left side of FIG. That is, first, a pair of second engagement recesses 25 are formed at the corners of the other short side wall 20 and both long side walls 10, and a pair of second engagement recesses 25 are formed between these second engagement recesses 25. Second vertical groove 2
2 are formed, and the second longitudinal groove 22 is formed at a position corresponding to the first engagement recess 24, and the second engagement recess 25 is formed at a position corresponding to the first longitudinal groove 21. be. Note that the specific configurations of the second longitudinal groove 22 and the second engagement recess 25 are substantially the same as the first longitudinal groove 21 and the first engagement recess 24 described above, so the detailed structure thereof will be explained below. Explanation will be omitted with illustration only.

Each of the first vertical groove 21 and the second vertical groove 22 described above has a bottom portion 21a and a bottom portion 22a, respectively, as shown in FIGS. 7 and 8.
and 22a are continuous with the upper surface of the bottom wall 30. Further, as shown in FIGS. 7 to 11, second grooves 21b and 22 are provided in the bottom portions 21a and 22a, respectively.
b is formed. These second grooves 21b and 22b
is used when the flexible box 100 is stacked against the lower flexible box 100, and has the same width as the flange 11 formed on the upper edge of each long side wall 10. It is something.

[0036] In the box 100 according to this embodiment, a plate is formed on each short side wall 20 side of the box, and is connected to each of the flanges 23 and hangs down from the outer edge. A handle 29 is formed to be used when carrying the flexible box 100.

Finally, regarding the bottom wall 30, this bottom wall 30
1, FIG. 2, FIG. 4, FIG. 7, FIG. be. This first groove 31 is used when the flexible box 100 is "stacked in parallel", and its width is twice the width of the flange 11 formed on the long side wall 10. That is, when "stacking" the flexible boxes 100, both flanges 11 of the two flexible boxes 100 placed close to each other are fitted into the first groove 31. Of course, as shown in FIG. 4, a plurality of reinforcing ribs 32 are formed on the bottom surface of the bottom wall 30, and the bottom wall 30 is reinforced by the reinforcing ribs 32. As described above, in the smart box 100 according to the second aspect, the inner surface of the bottom wall 30 is raised upward.

[0038]

Effects of the Invention As described in detail above, the invention according to claim 1 is characterized by the configuration as exemplified in the above embodiment. Not only can they be stacked, but they can also be stacked and stacked in parallel, making them highly practical as containers for transporting and storing products and parts. be. Furthermore, the entire box 100 can be integrally formed from synthetic resin, and can be manufactured easily and inexpensively.

On the other hand, the invention according to claim 2 is characterized in that each of the long side walls 10 is curved outward by a predetermined amount, and the bottom wall 30 is also raised upward by a predetermined amount. Thereby, this fluffy box 100 is the fluffy box 10 according to claim 1 described above.
In addition to having the same effect as 0, when items are stored inside, the overall shape can be approximated to a rectangular parallelepiped.
This makes it possible to more reliably and easily carry out each task of ``stacking'' and ``stacking parallel columns.''

[Brief explanation of the drawing]

FIG. 1 is a front view of a slim box according to the present invention.

FIG. 2 is a rear view of the same box.

FIG. 3 is a plan view of the same flexible box.

FIG. 4 is a bottom view of the same box.

FIG. 5 is a left side view of the same box.

FIG. 6 is a right side view of the same box.

FIG. 7 is an enlarged partially broken sectional view taken along line 7-7 in FIG. 3;

8 is a partially broken enlarged sectional view taken along line 8-8 in FIG. 3; FIG.

FIG. 9 is a partial cross-sectional view of a stack of flexible boxes.

FIG. 10 is a partially enlarged perspective view centered on the left short side wall of the stacked boxes.

FIG. 11 is a partially enlarged perspective view centered on the right short side wall of the stacked boxes.

FIG. 12 is a perspective view of two stacked boxes.

FIG. 13 is a perspective view of two stacked boxes.

FIG. 14 is a perspective view of four light boxes stacked together in a parallel grid.

FIG. 15 is a schematic plan view of a smart box according to claim 2.

FIG. 16 is a schematic cross-sectional view of the rigid box cut along the side walls of the same length.

FIG. 17 is a schematic cross-sectional view of the rigid box cut along the short side wall.

[Explanation of symbols]

100 cute box 10 Long side wall 11　Trim section 20 Short side wall 21 First vertical groove 21a Bottom 21b Second groove 22 Second vertical groove 22a Bottom 22b Second groove 23 Tsuba 24 First engagement recess 25 Second engagement recess 30 Bottom wall 31 First groove

Claims (2)

[Claims] Claim 1: A long side wall, a short side wall, and a bottom wall, each having a ratio of the lengths of the long side and the short side of approximately 2:1, and each having an outwardly projecting flange on each upper edge. The box is integrally formed of a synthetic resin and has an upper opening larger than the bottom wall, and one of the short side walls is located at both corners thereof and has a large upper part and a bottom part. a pair of first vertical grooves;
a pair of first engagement recesses formed on the flange and located between both first longitudinal grooves, the other of the short side walls being at a position opposite to each of the first engagement recesses; and a pair of second engaging recesses formed on the flange at positions facing each of the first vertical grooves. Further, the bottom wall has a bottom wall having a width twice as wide as a width of a flange formed integrally with the long side wall, the bottom wall being formed in a penetrating manner at a central portion located between the short side walls on the lower surface thereof. The book has a first groove, and each of the first and second vertical grooves is provided with a second groove on the lower surface of the bottom thereof, which can fit into the flange of the long side wall. A cute box. [Claim 2] Each of the long side walls has a flange whose center portion is curved and protrudes outward, and the bottom wall has a raised center. The sturdy box described in item 1.