JP7299654B1 - Assembly container - Google Patents

Abstract

An object of the present invention is to provide an assembly container that can be easily assembled without using an adhesive or the like. The assembly container is formed by folding a flat sheet, and includes a substantially rectangular bottom portion forming a bottom wall, and each side of the bottom portion being connected to each side of the bottom portion via folding lines. , four side portions forming a side wall, and two side portions arranged corresponding to each vertex of the bottom portion and connecting the two side portions adjacent to the vertex, along an extension line of a diagonal line of the bottom portion At least two of the four side portions are formed with cuts, and the four engagement pieces are formed on the outside of the side portions. An assembled container that is folded back, and the tip portion of each of the engaging pieces is inserted into the notch and engaged with the side surface portion. [Selection diagram] Fig. 1

Description

The present invention relates to an assembled container assembled by folding flat sheets.

2. Description of the Related Art Assembled containers made of paper or the like are used for various purposes such as containers for small items, tableware, and drinks outdoors and indoors. A conventional assembled container can be manufactured at a relatively low cost compared to a three-dimensionally molded container or the like.

As a conventional assembled container, for example, a flat paper is folded into a predetermined shape, and the folded portion is joined at a predetermined position by an adhesive or resin welding to be assembled into a container shape. However, such a conventional assembly container has a problem that it takes time and effort to assemble it because it is necessary to prepare an adhesive agent, a heating device for welding, and the like. In addition, when food is placed in the container, there is a risk that part of the adhesive or welding resin will adhere to the food, which poses a hygiene problem.

Patent No. 3608647 Patent No. 6967262

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and provides an assembly container that can be easily assembled without using an adhesive or the like.

An assembled container according to a first aspect of the present invention is an assembled container formed by folding a flat sheet,
a bottom portion that is substantially rectangular and constitutes a bottom wall;
Four side portions that are connected to each side of the bottom portion via folding lines and constitute side walls;
four engaging piece portions arranged corresponding to each vertex of the bottom surface portion, connecting two of the side surface portions adjacent to the vertex, and folded along an extension line of a diagonal line of the bottom surface portion; has
Incisions are formed in at least two of the four side portions,
The four engaging pieces are folded back to the outside of the side surface, and the tip of each engaging piece is inserted into the notch and engaged with the side surface.

In the assembly container according to the present invention, the tip portion of the engaging piece connecting the side portions is inserted into the notch formed in the side portion and engaged with the side portion. As a result, the assembled container according to the present invention can be manufactured by simply folding a flat sheet in a predetermined manner without using an adhesive or the like, and the box-like shape is firmly maintained. In addition, since it is not necessary to use an adhesive or the like for assembly, it has good safety in terms of hygiene.

Further, for example, the four side portions are arranged in a first side portion and a second side portion in which the notch is formed and which are opposed to each other, and the first side portion and the second side portion are arranged in a substantially vertical direction. It may be composed of a third side face and a fourth side face facing each other,
Two of the four engaging pieces are engaged with the first side surface, and the other two of the four engaging pieces are engaged with the second side surface. good.

In such an assembled container, none of the engaging pieces are engaged with the two side portions, ie, the third side portion and the fourth side portion, and there is no need to form a notch. Therefore, even when such an assembly container is used as a cup or the like for containing liquid, for example, by using the third side or fourth side as a drinking spout or pouring spout, the engaging piece or the like can be adjusted during use. It avoids getting in the way and can be used preferably.

Further, for example, the length L1 from the top side portion to the bottom portion of the first side portion and the second side portion is the length from the top side portion to the bottom portion of the third side portion and the fourth side portion. It may be longer than length L2.

In such an assembly container, since the lengths of the first side surface portion and the second side surface portion where the cuts are formed are long, the strength of the peripheral portions of the cuts can be appropriately ensured. Therefore, such an assembled container has good strength and durability because the notch appropriately holds the engagement piece.

Further, for example, the notch may be formed in a region within one-third of the upper side portion of each of the first side portion and the second side portion.

Such an assembly container has a notch formed on the upper end side of the container, so that when a liquid or the like is poured into the container, the surface of the liquid to be poured is at least two thirds of the depth of the container. Up to less than 0.5 mm, the problem of liquid leaking out of the container through the notch can be prevented.

Further, for example, the cut may have a curved shape in which the distance between the center portion of the cut and the bottom portion is greater than the distance between both end portions of the cut and the bottom portion.

With such a notch shape, the tips of the two engaging pieces inserted into the notch are both inserted deeper into the notch. Appropriately holds the mating piece and has good strength and durability.

Further, for example, in a state in which the sheet is unfolded in a plane, the length L3 from the outer edge spaced position, which is the farthest from the center of the bottom surface of each of the engaging pieces, to the center of the bottom surface is It may be longer than the length L4 from the upper side portion spaced position farthest from the center of the bottom surface portion to the center of the bottom surface portion in the third side surface portion and the fourth side surface portion.

In such an assembly container, since the length of the engaging piece is long, the tip of the engaging piece can be deeply inserted into the notch, and the notch appropriately holds the engaging piece, thereby providing a good result. It has excellent strength and durability.

Further, for example, at least a pair of outer edge cuts or outer edge notches arranged substantially symmetrically with respect to the extension line passing through the engaging piece is formed on the outer edge of each of the engaging pieces. well,
In the state in which the sheet is spread out in a plane, the length L5 from the outer edge notch or outer edge notch closest to the center of the bottom surface portion to the center of the bottom surface portion is equal to the engaging piece portion. It may be shorter than the length L6 from the outer end of the connecting side portion to the side surface portion to which the engaging piece portion is connected to the center of the bottom surface portion.

In such an assembled container, the outer edge notch or the outer edge notch formed in the outer edge of the engaging piece can be engaged with the notch in the side surface, so that the engaging piece is attached to the side surface. firmly fixed. Therefore, such an assembled container exhibits very good strength and durability without using an adhesive or the like.

An assembled container according to a second aspect of the present invention is an assembled container formed by folding a flat sheet,
a bottom portion that is substantially rectangular and constitutes a bottom wall;
Four side portions that are connected to each side of the bottom portion via folding lines and constitute side walls;
four engaging piece portions arranged corresponding to each vertex of the bottom surface portion, connecting two of the side surface portions adjacent to the vertex, and folded along an extension line of a diagonal line of the bottom surface portion; has
At least two of the four side portions are provided with side joint pieces extending from the upper sides of the side portions,
The four engaging piece portions are folded back to the outside of the side surface portion, the side joint pieces are engaged with the engaging piece portion, and the engaging piece portions are engaged with the outside of the side surface portion.

In such an assembly container, the side joining piece extending from the upper side of the side portion is engaged with the engaging piece so that the engaging piece is engaged with the outer side of the side using an adhesive or the like. Even without it, it can be produced simply by folding a flat sheet in a predetermined manner, and the box-like shape is firmly maintained. In addition, since it is not necessary to form a notch or the like in the side surface of the container, it is possible to prevent the liquid from leaking from the side surface when the liquid is poured into the container.

FIG. 1 is a perspective view of an assembled container according to the first embodiment. 2 is an exploded view of the assembly container shown in FIG. 1. FIG. FIG. 3 is a conceptual diagram in which folding lines indicating how to fold are added to the exploded view of the assembly container shown in FIG. FIG. 4 is a first conceptual diagram showing how to fold the assembly container shown in FIG. FIG. 5 is a second conceptual diagram showing how to fold the assembled container shown in FIG. 6 is a perspective view showing the shape of the assembled container shown in FIG. 1 in a folded state. FIG. FIG. 7 is a perspective view showing an assembly container according to a second embodiment of the invention. 8 is an exploded view of the assembly container shown in FIG. 7. FIG. FIG. 9 is an exploded view of an assembly container according to the first modified example. FIG. 10 is an exploded view and a perspective view of an assembled container according to a second modification. FIG. 11 is a perspective view of an assembled container according to a third modified example. FIG. 12 is an exploded view of assembled containers according to fourth and fifth modifications. FIG. 13 is a perspective view of assembled containers according to fourth and fifth modifications. FIG. 14 is a conceptual diagram of an assembled container according to the sixth modification.

First Embodiment FIG. 1 is a perspective view showing an assembled container 10 according to a first embodiment of the present invention. The assembly container 10 is formed by folding a flat sheet as shown in FIG. The sheet forming the assembly container 10 is not particularly limited as long as it is a thin flat body that can be folded. In addition, it is preferable that the sheet constituting the assembly container 10 is flat paper and the assembly container 10 is a paper container from the viewpoint of ease of production and sustainability. By using flexible paper, the strength of the assembly container 10 as a paper container is improved. In addition, the fibers used for the paper constituting the assembly container 10 as a paper container may be chemical fibers or inorganic fibers, but using natural plant fibers exhibits good biodegradability. It is preferable because it is environmentally friendly.

As shown in FIG. 1, the assembly container 10 has a box-like shape with an open top surface and a substantially rectangular bottom surface portion 20 and side surface portions 30 . FIG. 2 is an exploded view of the assembled container 10 shown in FIG. As shown in FIG. 2, the bottom portion 20 is positioned substantially in the center when the assembly container 10 is unfolded. The bottom portion 20 is substantially rectangular and constitutes the bottom wall of the assembly container 10 shown in FIG.

As shown in FIG. 1, the four side portions 30 are composed of a first side portion 31, a second side portion 32, a third side portion 33, and a fourth side portion 34, and form side walls of the assembly container 10. Configure. As shown in FIG. 2, the first side portion 31, the second side portion 32, the third side portion 33, and the fourth side portion 34 are connected to the sides 21 of the bottom portion 20 via the folding line portion 21a. It is

FIG. 3 is a conceptual diagram in which folding lines indicating how to fold are added to the exploded view of the assembly container 10 shown in FIG. In FIG. 3, the dashed-dotted line indicates the mountain-folded portion, and the dashed line indicates the valley-folded portion. 2 and 3, the upper surface of the paper surface shows the side that becomes the surface when the assembled container 10 shown in FIG. 1 is in the state.

As shown in FIG. 3, folding line portions 21a formed at connecting portions between the first side portion 31, the second side portion 32, the third side portion 33 and the fourth side portion and the sides 21 of the bottom portion 20 are , is the mountain fold line.

As shown in FIGS. 1 to 3, the four side portions 31 to 34 of the assembly container 10 are opposed to each other and have a first side portion 31 and a second side portion 32 formed with notches 31a and 32a, The first side surface portion 31 and the second side surface portion 32 are configured by a third side surface portion 33 and a fourth side surface portion 34 facing each other in a substantially vertical direction. In this way, in the assembled container 10, cuts 31a and 32a are formed in at least two of the four side portions 31 to 34, namely, the first side portion 31 and the second side portion 32, and the remaining third side surface. No cut is formed in the portion 33 and the fourth side portion 34 . However, unlike the assembled container 10, cuts may be formed in all of the first to fourth side portions, which are four side portions (see FIGS. 7 and 8).

As shown in FIG. 1 , the notch 31 a of the assembly container 10 is formed by a cutting line formed in the first side surface portion 31 so as to connect two predetermined points in the first side surface portion 31 . The notch 32 a is also formed by a cutting line formed in the second side surface portion 32 so as to connect two predetermined points in the second side surface portion 32 . As shown in FIG. 2, small holes may be formed at both ends of the cuts 31a and 32a. Due to the formation of such holes, in the assembly container 10, during assembly or the like, which will be described later, force concentrates on narrow regions at both ends of the cuts 31a and 32a, and both ends of the cuts 31a and 32a are torn. can prevent problems.

As shown in FIG. 1, the tip portions of the engaging pieces 40 are inserted into the notches 31a and 32a. The four engaging pieces 40 are held by the first side surface 31 and the second side surface 32 while being engaged with the notches 31a and 32a, thereby maintaining the box shape as shown in FIG. be able to. Detailed shapes of the cuts 31a and 32a will be described in detail later.

As shown in FIG. 2, the four engaging piece portions 40 are a first engaging piece portion 41, a second engaging piece portion 42, a third engaging piece portion 43, and a fourth engaging piece portion 44. Consists of The engaging piece portions 41 to 44 are arranged corresponding to each vertex 22 of the bottom portion 20 and connect the two side portions 31 to 34 adjacent to the vertex 22 . That is, the first engaging piece 41 connects the first side surface 31 and the third side surface 33 , and the second engaging piece 42 connects the second side surface 32 and the third side surface 33 . are connected. The third engaging piece portion 43 connects the second side surface portion 32 and the fourth side surface portion 34 , and the fourth engaging piece portion 44 connects the first side surface portion 31 and the fourth side surface portion 34 together. are connected.

As shown in FIGS. 2 and 1, in the assembly container 10, the first to fourth engaging piece portions 41 to 44 are folded along the extension lines 41b, 42b, 43b, and 44b of the diagonal line 23 of the bottom portion 20. . Since each extension line 41b, 42b, 43b, 44b passes through the center of the corresponding first to fourth engagement piece portions 41 to 44, the first to fourth engagement piece portions 41 to 44 are the extension lines It is folded in two along 41b, 42b, 43b and 44b.

As shown in FIG. 1, the four engaging piece portions 41, 42, 43, and 44 folded in two are arranged outside the first side portion 31 or the second side portion 32 in which the cuts 31a and 32a are formed. folded back. That is, the first engaging piece portion 41 and the fourth engaging piece portion 44 are folded back to the outside of the first side surface portion 31, and the second engaging piece portion 42 and the third engaging piece portion 43 are folded back on the second side surface portion 31. It is folded to the outside of portion 32 .

Furthermore, the tip portions 41a and 44a of the first engaging piece portion 41 and the fourth engaging piece portion 44 folded back to the outside of the first side surface portion 31 are inserted into the notches 31a formed in the first side surface portion 31. and engaged with the first side surface portion 31 . Similarly, the tip portions 42a and 43a of the second engaging piece portion 42 and the third engaging piece portion 43 that are folded back to the outside of the second side surface portion 32 are inserted into the notches 32a formed in the second side surface portion 32. It is inserted and engaged with the second side portion 32 . In this manner, the assembly container 10 shown in FIG. 1 is formed by folding a flat sheet as shown in FIG. A method of folding the assembly container 10 will be described in detail later.

As shown in FIGS. 1 and 2, the cuts 31a and 32a formed in the first side surface portion 31 and the second side surface portion 32 are formed in the upper side portion of the first side surface portion 31 and the second side surface portion 32 in the height direction. It is preferably formed in a region R1 (shown in gray in FIG. 3) within one-third of the side of 31b and 32b. By arranging the notches 31a and 32a near the upper sides 31b and 32b, it becomes difficult for the contained liquid to come into contact with the notches 31a and 32a when the assembly container 10 is used as a container for containing liquid.

As shown in FIG. 2, the length L1 from the upper side portions 31b and 32b of the first side portion 31 and the second side portion 32 where the cuts 31a and 32a are formed to the bottom portion 20 is It is longer than the length L2 from the upper side portions 33b, 34b of the third side portion 33 and the fourth side portion 34, which are not wrapped, to the bottom portion 20. In the assembly container 10 in which the height of the first side portion 31 and the second side portion 32 is higher than the height of the third side portion 33 and the fourth side portion 34, the cuts 31a and 32a are formed at positions farther from the bottom portion 20. It becomes possible to Therefore, when the assembly container 10 is used as a container for containing liquid, the contained liquid is less likely to come into contact with the cuts 31a and 32a, thereby preventing the leakage of the contents from the cuts 31a and 32a. . Further, in such an assembly container 10, even if the cuts 31a and 32a are formed at positions apart from the bottom surface portion 20, the widths from the cuts 31a and 32a to the upper side portions 31b and 32b are appropriately secured, and the assembly container 10 is can increase the strength of

2, the upper side portions 31b and 32b of the first and second side portions 31 and 32 are the sides of the bottom portion 20 to which the first and second side portions 31 and 32 are connected. 21, the length L1 from the upper side portions 31b and 32b to the bottom portion 20 can be considered as an average value of the whole. The same applies to the length L2.

Further, in the assembly container 10 shown in FIG. 1, two of the four engaging piece portions 41, 42, 43, and 44, the first engaging piece portion 41 and the fourth engaging piece portion 44, 31, and the other two of the four engaging piece portions 41, 42, 43, 44, the second engaging piece portion 42 and the third engaging piece portion 43, are attached to the second side surface portion. 32. Therefore, in the assembly container 10, as described above, the length L1 regarding the first side surface portion 31 and the second side surface portion 32 and the length L2 regarding the third side surface portion 33 and the fourth side surface portion 34 are set to different lengths. there is However, the assembled container is not limited to such a shape, and the length L1 and the length L2 may be the same (see, for example, the assembled container 110 shown in FIG. 7).

As shown in FIG. 2, the four engaging pieces 41, 42, 43, and 44 are arranged in the direction of the diagonal line 23 of the bottom portion 20 when the sheet constituting the assembly container 10 is laid out flat. On the other hand, the four side parts 31 , 32 , 33 , 34 are connected to each side 21 of the bottom part 20 . As shown in FIG. 2, the length L3 from the outer edge spaced position 41ca farthest from the center 24 of the bottom surface 20 in the first engaging piece 41 to the center 24 of the bottom surface 20 is the third side surface. It is preferable that the length L4 from the upper side spaced position 33c, which is the farthest from the center 24 of the bottom surface portion 20, to the center 24 of the bottom surface portion 20 in the portion 33 and the fourth side surface portion 34 is longer than L4. The same applies to the second to fourth engaging piece portions 42 to 44 other than the first engaging piece portion 41. As shown in FIG.

In the assembly container 10 in which the length L3 and the length L4 have such a relationship, the tip portions 41a to 44a of the engaging pieces 41 to 44 folded in two along the extension lines 41b to 44b are folded as shown in FIG. can be deeply inserted into the notches 31a, 32a. Therefore, even if the assembly container 10 is bent due to the weight of the contents, the engagement between the engaging pieces 41 to 44 and the notches 31a and 32a is unexpectedly released. problems can be prevented.

As shown in FIG. 2, the outer edges 41c and 42c of the first and second engaging pieces 41 and 42 are provided with extension lines 41b passing through the first and second engaging pieces 41 and 42, respectively. , 42b are formed. The pair of outer edge cutouts 41d and 42d are arranged substantially symmetrically with respect to the extension lines 41b and 42b, thereby dividing the engaging pieces 41 and 42 into two along the extension lines 41b and 42b as shown in FIG. When folded, they overlap each other.

Further, as shown in FIG. 2, when the sheets constituting the assembly container 10 are laid out flat, the outer edge notch 41d formed in the first engaging piece portion 41 is closest to the center 24 of the bottom surface portion 20. As shown in FIG. The length L5 from the closest deepest portion 41da to the center 24 of the bottom surface portion 20 is the outer end of the connecting side portion 51a between the first engaging piece portion 41 and the first side surface portion 31 to which the first engaging piece portion 41 connects. It is shorter than the length L6 from the portion 51aa to the center 24 of the bottom portion 20. Such a relationship is the same for the outer edge notch 42d formed in the second engaging piece portion 42 as well. Further, the fourth engaging piece portion 44 has a shape symmetrical with the first engaging piece portion 41, and the third engaging piece portion 43 has a shape symmetrical with the second engaging piece portion 42. ing.

By forming such outer edge cutouts 41d and 42d in each of the engaging pieces 41 to 44, the tip portions 41a to 44a of the engaging pieces 41 to 44 are formed into notches 31a and 44a as shown in FIG. It can be deeply inserted with respect to 32a. In addition, since the outer edge notches 41d and 42d are formed, the engagement between the engaging pieces 41 to 44 and the notches 31a and 32a becomes stronger. can prevent the problem of unexpected disengagement from the .

Further, as shown in FIG. 2 , in the assembly container 10 , the notch 31 a formed in the first side surface portion 31 is such that the distance between the notch center portion 31 aa and the bottom surface portion 20 is the distance between the both end portions 31 ab of the notch and the bottom surface portion 20 . It has a curved shape that is far relative to the distance. The cut 32a formed in the second side surface portion 32 is also the same. Since the cuts 31a and 32a have such curved shapes, in the assembly container 10, more regions of the engaging pieces 41 to 44 can be inserted above the cuts 31a and 32a. In addition, the distances between the cut end portions 31ab and the engaging pieces 41 to 44 can be appropriately reduced. Therefore, in such an assembly container 10, the engagement between the engaging pieces 41 to 44 and the cuts 31a and 32a becomes more reliable, and the engagement between the engaging pieces 41 to 44 and the cuts 31a and 32a is expected. It is possible to more effectively prevent the problem that is solved without doing so.

A method for manufacturing the assembly container 10 will be described with reference to FIGS. 3 to 5. FIG. In the manufacturing method of the assembled container 10, first, a planar sheet having a shape as shown in FIG. 2 is prepared. The incisions 31a, 32a are preferably formed at predetermined positions before starting to fold the sheet, but they can also be formed after starting to fold the sheet. Further, the boundaries of the bottom surface portion 20, the side surface portions 31 to 34, and the engaging piece portions 41 to 44 may be indicated by printed lines or embossed grooves on the front surface or the back surface of the sheet. However, the surface of the sheet may have a pattern, pattern, picture, photograph, etc. other than the boundary line displayed thereon, and the surface of the sheet may be plain.

Further, as shown in FIG. 3, on the surface of the sheet that is the raw material of the assembly container 10, the boundaries of the bottom surface portion 20, the side surface portions 31 to 34 and the engaging pieces 41 to 44 are formed by mountain fold lines or valley fold lines. may be displayed separately.

Next, the sheet as shown in FIGS. 2 and 3 is folded into a predetermined shape. More specifically, as indicated by the dashed line in FIG. 3, each side 21 of the bottom surface portion 20, connecting side portions 51b on both sides of the third side portion 33 and the fourth side portion 34, and the engaging piece portion 41 The extension lines 41b to 44b passing through the center of .about.44 are mountain-folded. Further, as indicated by broken lines in FIG. 3, the connecting side portions 51a on both sides of the first side portion 31 and the second side portion 32 are valley-folded. The diagonal line 23 of the bottom portion 20 may be mountain-folded together with the extension lines 41b to 43, but in the state of the assembly container 10 shown in FIG. It is returned to its original state, and the bottom portion 20 becomes flat.

FIG. 4 is a first conceptual diagram showing how to fold the assembly container 10 shown in FIG. FIG. 4 shows an intermediate state from the planar sheet state shown in FIGS. 2 and 3 to the assembled container 10 shown in FIG. As can be understood from a comparison of FIGS. 3 and 4, by folding each side 21 of the bottom surface portion 20, the first to fourth side surface portions 31 to 34 rise above the bottom surface portion 20. As shown in FIG. Also, the engaging pieces 41 to 44 are folded in two along the extension lines 41b to 44b. Furthermore, as indicated by arrow 61 in FIG. The second engaging piece portion 42 and the third engaging piece portion 43 that have been folded in half are folded back to the outside of the second side surface portion 32 .

Finally, the tip portions 41a and 44a of the first engaging piece portion 41 and the fourth engaging piece portion 44 are inserted into the notch 31a of the first side surface portion 31 from the outside to the inside, and the second engaging piece portion 42 and the tip portions 42a and 43a of the third engaging piece portion 43 are inserted into the notch 32a of the second side surface portion 32 from the outside to the inside to obtain the assembly container 10 shown in FIG.

FIG. 5 is a second conceptual diagram showing how to fold the assembly container 10 shown in FIG. As shown in FIG. 5, in the assembly container 10, the engaging pieces 41 to 44 connecting the two adjacent side surfaces 31 to 34 are formed by the cut 31a of the first side surface 31 or the cut 32a of the second side surface 32. is inserted into and engaged with. In FIG. 5, the first engaging piece portion 41 is engaged with the notch 31a of the first side surface portion 31, and the second engaging piece portion 42 and the third engaging piece portion 43 are arranged on the second side surface portion. The state of engagement with the notch 32a of 32 is indicated by an imaginary line (chain double-dashed line).

Such an assembled container 10 can be easily changed from the planar sheet state shown in FIG. 2 to the box-like shape shown in FIG. can be assembled into Further, in the assembly container 10, the third side surface portion 33 and the fourth side surface portion 34 are not formed with cuts, so that the third side surface portion 33 and the fourth side surface portion 34 can be easily swallowed when used as a cup or the like. It can be suitably used as a mouth. In addition, although the assembled container 10 does not use an adhesive or the like, the engaging piece portions 41 to 44 are inserted into the cutouts 31a and 32a, and the engaging piece portions 41 to 44 are attached to the first side surface portion 31. Alternatively, it is securely fixed to the second side surface portion 32 . Therefore, the assembled container 10 exhibits good strength to withstand various uses.

In addition, since the assembly container 10 can be easily manufactured from a flat sheet state as shown in FIG. is also possible. FIG. 6 shows a flat folded state of the assembly container 10 shown in FIG. In the assembly container 10, the bottom surface portion 20 and the opposing third side surface portion 33 and fourth side surface portion 34 are composed of a single wall that is not folded. Even without releasing engagement between 44 and notches 31a and 32a, it can be easily folded compactly as shown in FIG. From this point of view as well, the assembly container 10 can be used as a compact and convenient container in various situations including outdoor activities such as camping and outdoor barbecues.

Second Embodiment FIG. 7 is a perspective view of an assembled container 110 according to a second embodiment of the present invention, and FIG. 8 is an exploded view of the assembled container 110. As shown in FIG. The assembly container 110 shown in FIGS. 7 and 8 has cuts 131a to 134a formed in all of the first to fourth side surface portions 131 to 134, and one cut 131a to 134a corresponds to one first to fourth side surface portions 131a to 134a. It differs from the assembly container 10 shown in FIGS. 1 and 2 in that the fourth engagement pieces 141 to 144 are inserted. However, the assembled container 110 is similar to the assembled container 10 according to the first embodiment in terms of the structure of the bottom portion 20 and the like. The description of the assembled container 110 will focus on the differences from the assembled container 10, and the description of the common points with the assembled container 10 will be omitted.

Similar to the assembled container 10 shown in FIGS. 1 and 2, the assembled container 110 shown in FIGS. It has four side portions 130 that connect to form side walls, and four engaging pieces 140 that connect two adjacent side portions. The four side portions 130 are composed of a first side portion 131, a second side portion 132, a third side portion 133 and a fourth side portion 134, and four engaging piece portions 140 are composed of the first engaging piece portion 141, It consists of a second engaging piece portion 142 , a third engaging piece portion 143 and a fourth engaging piece portion 144 .

As shown in FIG. 8, a cut 131a is formed in the first side portion 131, a cut 132a is formed in the second side portion 132, and a cut 133a is formed in the third side portion 133. , the fourth side portion 134 is formed with a notch 134a. That is, one notch 131a to 134a is formed in each of the four side portions 131 to 134. As shown in FIG.

As shown in FIG. 8, the first engagement piece 141 connects to one of the vertices 22 of the bottom surface 20 and connects the first side surface 131 and the third side surface 133 adjacent to the apex 22. Connected. The first engaging piece portion 141 is folded along an extension line 141b of the diagonal line 23 of the bottom portion 20, and further folded to the outside of the adjacent first side portion 131 in the clockwise rotation direction in FIG. Further, the tip portion 141a of the first engaging piece portion 141 is inserted into the notch 131a of the first side surface portion 131, and the first engaging piece portion 141 is engaged with the first side surface portion 131 as shown in FIG. ing.

Similarly to the first engaging piece 141, the second engaging piece 142, the third engaging piece 143 and the fourth engaging piece 144 shown in FIG. 8, and are engaged with the third side portion 133, the second side portion 132, and the fourth side portion 134 adjacent in the right rotation direction in FIG. That is, the tip portion 142a of the second engaging piece portion 142 is inserted into the notch 133a of the third side surface portion 133, and the tip portion 143a of the third engaging piece portion 143 is inserted into the notch 132a of the second side surface portion 132. , the tip portion 144a of the fourth engaging piece portion 144 is inserted into the notch 134a of the fourth side portion 134. As shown in FIG.

As shown in FIG. 8, the outer edge portion 141c of the first engaging piece portion 141 is formed with a pair of outer edge cutouts (or outer edge cutouts) 141d arranged substantially symmetrically with respect to the extension line 141b. Since the outer edge notch 141d is formed in the outer edge 141c of the first engaging piece 141, as shown in FIG. 7, the first engaging piece 141 and the notch 131a are unintentionally disengaged Problems can be advantageously prevented. Outer edge cutouts 142d to 144d similar to the first engaging piece 141 are also formed in outer edge portions 142c to 144c of the second to fourth engaging pieces 142 to 144, respectively.

Since the side surfaces 131 to 134 of the assembled container 110 shown in FIG. 7 are rotationally symmetrical to each other, the partial strength of the assembled container 110 is less uneven and is excellent in strength and durability. In addition, the assembled container 110 has the same effects as the assembled container 10 with respect to the points in common with the assembled container 10 .

It goes without saying that the assembly containers 10 and 110 shown in FIGS. 1 to 8 are merely examples, and that the technical scope of the present invention includes many other embodiments and modifications. For example, as shown in FIGS. 1 and 7, the side surfaces 30 and 130 of the assembly containers 10 and 110 are slightly inclined outward, and have a shape in which the area of the opening above the container is wider than the bottom surface portion 20. are doing. However, the shape of the assembled container 10, 110 can be changed by adjusting the angle of the connecting side portions 51a, 51b shown in FIG. Alternatively, the side portions 30 and 130 may be completely perpendicular to the bottom portion 20 .

In addition, a plurality of cuts may be formed in each of the side surfaces 131 to 134 of the assembly container 110, and the cut into which each of the side surfaces 131 to 134 is inserted can be selected according to the inclination angle of the side surface 130. There may be.

FIG. 9 is an exploded view of an assembly container 210 according to a first modification of the assembly container 10 shown in FIGS. 1 and 2. FIG. The assembly container 210 is different from the assembly container 10 in which the outer edge cutouts 41d to 42d are formed in the outer edge portions 41c to 42c in that the outer edge cutouts 241d to 244d are formed in the outer edge portions of the engaging pieces 241 to 244. , but otherwise similar to the assembled container 10 shown in FIG. In the explanation of the assembly container 210, only the differences from the assembly container 10 will be explained, and the explanation of the common points with the assembly container 10 will be omitted.

In the assembly container 210 shown in FIG. 9, outer edge cuts 241d to 244d are formed on the outer edges of the engagement pieces 241 to 244, so that the strength of engagement of the engagement pieces 241 to 244 with the cuts 31a and 32a is increased. be able to. Therefore, in such an assembled container, even if the engaging pieces 241 to 244 are inserted into the notches 31a and 32a only to a shallow depth, the engagement of the engaging pieces 241 to 244 with the notches 31a and 32a can be prevented. can be prevented from being released unintentionally.

In addition, the assembled container 210 according to the first modified example has the same effects as the assembled container 10 in common with the assembled container 10 .

FIG. 10(a) is an exploded view of an assembly container 310 according to a second modification, and FIG. 10(b) is a perspective view of the assembly container 310. FIG. The assembly container 310 has a pattern printed on the surface and handles 341e and 343e formed on the first engaging piece 341 and the third engaging piece 343. It is different from the assembly container 10 according to . In the description of the assembled container 310, only the differences from the assembled container 10 will be described, and the description of the common points with the assembled container 10 will be omitted.

As shown in FIG. 10, the surface of the assembly container 310 may be printed with a picture or pattern. The picture or pattern of the assembly container 310 changes the appearance of the container to add value, and also serves as a mark when the assembly container 310 is produced from the sheet state.

As shown in FIG. 10( a ), handle portions 341 e and 343 e are formed at the tip portions of the first engaging piece portion 341 and the third engaging piece portion 343 of the assembly container 310 . Since the handle portions 341e and 343e are formed symmetrically with respect to the extension lines 41b and 43b, they overlap each other in the assembled state to form a double structure, so that the strength can be increased. As shown in FIG. 10(b), in the assembled state of the assembly container 310, the first engaging piece portion 341 and the third engaging piece portion 343 are aligned with the notches formed in the first and second side portions 31 and 32. 31a and 32a are inserted, and handle portions 341e and 343e formed at the tip portion extend upward from the assembly container 310. As shown in FIG.

As shown in FIG. 10(a), the second engaging piece portion 342 and the fourth engaging piece portion 344 of the assembled container 310 are formed with outer edge cuts 342d and 344d unlike the assembled container 10 shown in FIG. ing. On the other hand, in the first engaging piece portion 341 and the third engaging piece portion 343 of the assembled container 310, outer edge cutouts 341d and 343d are formed in the same manner as the assembled container 10 shown in FIG.

The second engaging piece portion 342 and the fourth engaging piece portion 344 do not have a handle portion, and the insertion depth of the tip portion into the notches 31a and 32a is shallow, so outer edge notches 342d and 344d are formed. Engagement strength with respect to the notches 31a and 32a can be increased. On the other hand, the first engaging piece portion 341 and the third engaging piece portion 343 are formed with handles 341e and 343e. 343d to allow moderate movement of the handles 341e, 343e.

Since the handle portions 341e and 343e are formed at the tip portions of the first engaging piece portion 341 and the third engaging piece portion 343, the assembled container 310 is convenient to carry, It is possible to prevent the problem of unexpected release of the engagement between the engaging pieces 341 and 343 and the first and second side portions 31 and 32 . In addition, the assembled container 310 according to the second modified example has the same effects as the assembled container 10 in common with the assembled container 10 .

FIG. 11 is a perspective view of an assembly container 410 according to a third modification of the invention. Assembly container 410 shown in FIG. 11 engages four engagement piece portions 440 with side joint pieces 430 extending from upper side portion 430b of side surface portion 430 in that assembly container 110 shown in FIGS. different from However, the assembled container 410 is similar to the assembled container 110 according to the second embodiment in terms of the structure of the bottom portion 20 and the like. The description of the assembled container 410 will focus on the differences from the assembled container 110, and the description of the common points with the assembled container 110 will be omitted.

As shown in FIG. 11, the assembled container 410 has four side portions 430 connected to a substantially square bottom portion and two adjacent side portions connected to each other, similar to the assembled container 110 shown in FIGS. It has four engaging pieces 440 . The four engaging piece portions 440 are folded in two and folded back to the outside of the adjacent side surface portion 430 in the right rotation direction.

At least two of the four side portions 430 (all four in the embodiment) are provided with side engaging pieces 430 f extending from the upper side portion 430 b of the side portion 430 . In the assembled container 410 , the engaging piece 440 is engaged with the outside of the side surface 430 by engaging the side engaging piece 430 f with the engaging piece 440 . More specifically, the side engagement piece 430f is inserted into the engagement piece notch 440f formed in the engagement piece portion 440, so that the engagement piece portion 440 is fixed to the outside of the side portion 430. there is

The assembly container 410 shown in FIG. 11 can be changed from a planar sheet state to a box shape shown in FIG. Easy to assemble. Although assembly container 410 tends to be weaker than assembly container 110 in terms of fixing engaging piece portion 440, since it is not necessary to form a cut in side surface portion 430, even when an object containing liquid is stored, the side surface can be secured. It is possible to prevent the problem of contents leaking from a part of the part.

Note that the assembled container 410 is not limited to the form shown in FIG. 11 in which one engaging piece 440 is fixed to one side surface 430, like the assembled container 110 shown in FIGS. Similar to the assembly container 10 shown in FIGS. 1 and 2, it is also possible to employ a mode in which two engaging pieces are fixed to each of a pair of opposing side surfaces. In addition, the assembled container 410 has the same effects as the assembled container 110 with respect to the points in common with the assembled container 110 .

FIG. 12(a) is an exploded view of an assembled container 510 according to a fourth modified example, and FIG. 12(b) is an exploded view of an assembled container 610 according to a fifth modified example. The assembly containers 510 and 610 differ from the assembly container 10 according to the first embodiment in that patterns are printed on their surfaces and that they have lids 571, 572, and 671. However, in other respects, It is the same as the assembled container 10 . In the description of the assembled containers 510 and 610, only the differences from the assembled container 10 will be described, and the description of the common points with the assembled container 10 will be omitted.

As shown in FIG. 12A, the assembly container 510 has a lid portion 571 connected to the upper side portion 33b of the third side portion 33 and a lid portion 572 connected to the upper side portion 34b of the fourth side portion 34. . FIG. 13 is a perspective view of the assembly container 510,610. As shown in FIG. 13 , the lid portions 571 and 572 are folded in mountain folds at the upper side portions 33 b and 34 b and function as lids that close the opening of the assembly container 510 . Lid portion cuts 571 a and 572 a are formed in the lid portions 571 and 572 . As shown in FIG. 13, when the opening of the assembly container 510 is closed with the lids 571 and 572, the lid cutouts 571a and 572a can be engaged with each other. Thus, the lid cutouts 571a and 572a function as stoppers that prevent the lids 571 and 572 from being easily opened.

As shown in FIG. 12B, the assembly container 610 has a lid portion 671 connected to the upper side portion 33b of the third side portion 33. As shown in FIG. As shown in FIG. 13 , the lid portion 671 functions as a lid that closes the opening of the assembly container 610 by being folded in a mountain fold at the upper side portion 33 b. A lid cutout 671 a is formed in the lid portion 671 . As shown in FIG. 13, by opening the lid cutout 671a, the peripheral portion of the lid cutout 671a functions as a knob for opening and closing the lid portion 671. As shown in FIG.

Since the assembled container 510 and the assembled container 610 have the lid portions 571, 572, and 671, it is possible to suppress the exposure of the contained items to the outside air or the like. In addition, the assembled container 510 and the assembled container 610 have the same effects as the assembled container 10 with respect to the points in common with the assembled container 10 .

FIG. 14 is a conceptual diagram of an assembly container 710 according to a sixth modification of the invention. FIG. 14(a) shows a plurality of members forming a flat sheet for folding the assembly container 710, and FIG. 14(b) shows an assembly by joining the members shown in FIG. 14(a). The flat sheet for forming the container 710 is shown completed. Assembled container 710 is made by joining together a plurality of originally separate portions of a planar sheet: first portion 710a, second portion 710b, third portion 710c and fourth portion 710d. 1, but is the same as the assembled container 10 in other respects.

As shown in FIGS. 14(a) and 14(b), a first portion 710a, a second portion 710b, a third portion 710c and a fourth portion 710d are separately prepared and attached to adhesive tapes, for example. By joining them together using the joining material 770, a large-sized assembly container 710 can be produced. The large-sized assembly container 710 may be of a size that a child or adult can enter, for example, and may be used as a simple shelter for the purpose of protecting privacy, etc., in public places or shelters. Conceivable. Thus, the planar sheet for forming the assembly container 710 is not limited to a one-piece sheet, and may be formed by connecting a plurality of portions 710a to 710d. In addition, the assembled container 710 has the same effects as the assembled container 10 in common with the assembled container 10 .

DESCRIPTION OF SYMBOLS 10, 110, 210, 310, 410, 510, 610, 710... Assembly container 20... Bottom part 21... Side 21a... Folding line part 22... Vertex 23... Diagonal line 24... Center 30, 130, 430... Side part 31, 131 First side portion 32, 132 Second side portion 33, 133 Third side portion 34, 134 Fourth side portion 31a, 32a, 131a, 132a, 133a, 134a Notch 31aa Central portion of notch 31ab Notch Both ends 31b, 32b, 33b, 34b, 430b Upper side 33c Separated upper side position L1, L2, L3, L4, L5, L6 Length R1 1/3 region 40, 140, 440 Engagement Pieces 41, 141, 241, 341... First engagement pieces 42, 142, 242, 342... Second engagement pieces 43, 143, 243, 343... Third engagement pieces 44, 144, 244, 344 Fourth engagement piece 41a, 42a, 141a, 142a, 143a Tip portion 41b, 42b, 141b, 142b, 143b Extension line 41c, 42c, 141c, 142c, 143c Outer edge 41ca Outer edge separated position 41d, 42d, 141d, 142d, 143d, 341d, 343d... Outer edge notch 241d, 242d, 243d, 244d, 342d, 344d... Outer edge notch 41da... Deepest part 51a, 51b... Connection side part 51aa... Outer edge part 61, 62 Arrows 341e, 343e Handle 430f Side engagement piece 440f Engagement piece notch 571, 572, 671 Lid 571a, 572a, 671a Lid notch

Claims (8)

An assembly container formed by folding a flat sheet,
a bottom portion that is substantially rectangular and constitutes a bottom wall;
Four side portions that are connected to each side of the bottom portion via folding lines and constitute side walls;
four engaging piece portions arranged corresponding to each vertex of the bottom surface portion, connecting two of the side surface portions adjacent to the vertex, and folded along an extension line of a diagonal line of the bottom surface portion; has
Incisions are formed in at least two of the four side portions,
The assembled container, wherein the four engaging pieces are folded back to the outside of the side surface and the notch , and the tip portion of each of the engaging pieces is inserted into the notch and engaged with the side surface. The four side portions are opposed to each other, and the first side portion and the second side portion in which the cut is formed, and the first side portion and the second side portion are oriented in a substantially vertical direction and opposed to each other. It is composed of a third side portion and a fourth side portion,
Two of the four engaging pieces are engaged with the first side surface, and the other two of the four engaging pieces are engaged with the second side surface. Item 1. The assembled container according to item 1. The length L1 from the top side portion to the bottom portion of the first side portion and the second side portion is longer than the length L2 from the top side portion to the bottom portion of the third side portion and the fourth side portion. The assembled container according to claim 2, characterized by: 3. The assembly container according to claim 2, wherein the notch is formed in an area within one-third of the upper side of each of the first side portion and the second side portion. 3. The assembly container according to claim 2, wherein the cut has a curved shape in which the distance between the center of the cut and the bottom is greater than the distance between both ends of the cut and the bottom. In the state in which the sheet is spread out in a plane, the length L3 from the outer edge spaced position farthest from the center of the bottom surface of each of the engaging pieces to the center of the bottom surface is the third side surface. 3. The assembly container according to claim 2, wherein the distance from the upper side portion spaced position farthest from the center of the bottom portion to the center of the bottom portion in the portion and the fourth side portion is longer than L4. At least a pair of outer edge cuts or outer edge notches arranged substantially symmetrically with respect to the extension line passing through the engaging piece is formed on the outer edge of each of the engaging pieces,
In the state in which the sheet is spread out in a plane, the length L5 from the outer edge notch or outer edge notch closest to the center of the bottom surface portion to the center of the bottom surface portion is equal to the engaging piece portion. 2. The assembly container according to claim 1, wherein the length L6 from the outer end of the connecting side portion to the side surface portion to which the engaging piece portion connects to the center of the bottom surface portion is shorter than L6. An assembly container formed by folding a flat sheet,
a bottom portion that is substantially rectangular and constitutes a bottom wall;
Four side portions that are connected to each side of the bottom portion via folding lines and constitute side walls;
four engaging piece portions arranged corresponding to each vertex of the bottom surface portion, connecting two of the side surface portions adjacent to the vertex, and folded along an extension line of a diagonal line of the bottom surface portion; has
Each of the four side portions is provided with a side joint piece extending from the upper side portion of the side portion,
An assembly in which the four engaging piece portions are folded back to the outside of the side portion, the side joint piece is engaged with the engaging piece portion, and the engaging piece portion is engaged with the outside of the side portion. container.

Images