Container structure

Abstract

To provide a container structure which can be easily assembled and has a flower-patterned folded shape. [Solution] This container structure comprises a cylindrical side wall portion 19, six bottom forming portions extending from the lower end of the side wall portion to form the bottom, and eight top forming portions 110-180 extending from the upper end of the side wall portion, and in the folded state, the side wall forming portions 17, 18 are overlapped by being folded along the folding lines, and in the assembled state where the side wall portions are formed into a container shape, the two side wall forming portions form a cylindrical shape, and the space between the side wall forming portions becomes the internal space of the container, and further, the top forming portions form an octagonal, flower-shaped top portion in a planar view, closing the upper opening of the internal space of the container, and further, the boundary line between the side wall portion and the top forming portions is constituted by an arc that convex toward the side wall portion.

Description

[Technical Field]

[0001] This invention relates to a container structure that has a polygonal top view with a floral pattern. [Background technology]

[0002] Conventionally, there are known containers, such as that disclosed in Patent Document 1, in which, when transitioning from a folded state to an assembled state, a bottom-forming portion rises as the side wall portion becomes cylindrical, and the bottom opening is closed to form the bottom. This type of configuration in which the bottom is formed as the side wall portion becomes cylindrical is extremely useful as it reduces the time required to assemble the container.

[0003] There is also a technique known as Kamonori, which involves folding paper based on mathematical rules to create geometric flower-like patterns. These Kamonori designs look beautiful and can be used for gift boxes and other items. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3246955 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the structures that use the above-mentioned flower pattern folding have many folded parts and often take a long time to assemble.

[0006] Therefore, the object of the present invention is to provide a container structure that solves these problems. [Means for solving the problem]

[0007] The present invention provides a container having a cylindrical side wall portion, the side wall portion being divided into two side wall forming portions by two folding lines along the axis of the tube, and (N) top forming portions extending from the upper end of the side wall portion to form a top portion, the side wall portion being folded along the folding lines in a folded state, and the two side wall forming portions being overlapped, and in an assembled state in which the side wall portion is formed into a container shape, the two side wall forming portions form a cylindrical shape, and the space between the side wall forming portions is an internal space of the container, and In two adjacent top portion forming portions, a portion of one (L-1)th top portion forming portion is positioned so as to overlap under the other (L)th top portion forming portion, and a portion of the (N)th top portion forming portion is positioned so as to overlap under the first top portion forming portion, thereby forming a top portion that is a polygon in a plan view having (N) number of sides, thereby closing the upper opening of the internal space of the container, (where L is a natural number greater than or equal to 2 and less than N), and the boundary line between the side wall portion and the top portion forming portion is formed by an arc that convex toward the side wall portion.This is a container structure characterized by the above.

[0008] With this configuration, designs can be applied to the side walls, resulting in a container with excellent decorativeness. Furthermore, the container can be transported and stored in a folded state, contributing to space savings. Furthermore, the overlapping of the top-forming portions in the above-described manner creates a floral fold pattern on the top, which has the advantage of improving the appearance of the container when it is shaped like a container. Furthermore, by forming the boundary between the side walls and the top-forming portions as a convex arc toward the side walls, the container can have a rounded appearance when viewed from above. In addition, the top-forming portions can easily maintain their bent configuration at approximately right angles to the side walls in the assembled state, which allows the top-forming portions to be locked to the side walls, making it easier to maintain the floral fold pattern.

[0009] Furthermore, a configuration is proposed in which the top forming portion is provided with a holding structure that holds a polygon in a plan view having N corners in the assembled state.

[0010] By adopting such a configuration, the floral pattern shape of the assembled top part can be maintained, and therefore, when a design is applied to the top part, the design is less likely to collapse and looks attractive. [Effects of the Invention]

[0011] The container structure of the present invention has the advantage that it is easy to assemble and can easily secure a floral fold shape. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view of a paper blank according to a first embodiment. [Figure 2] FIG. 2 is an explanatory view of the container in the folded state according to the first embodiment. [Figure 3] FIG. 2 is an explanatory view of the container in an assembled state according to the first embodiment. [Figure 4] FIG. 2 is an explanatory view of the container in an assembled state according to the first embodiment. [Figure 5] FIG. 2 is an explanatory view of a container with a closed upper opening according to Example 1. [Figure 6] FIG. 10 is a plan view of a paper blank according to Example 2. [Figure 7] FIG. 10 is an explanatory view of the container member in an assembled state according to the second embodiment. [Figure 8] FIG. 10 is an explanatory view of a container member with an upper end opening closed according to Example 2. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes in detail an embodiment of the present invention.

[0014] The present invention is not limited to the examples shown below, and design modifications are possible as appropriate.

[0015] Example 1 The container 1 is configured so that it can be formed into a cylindrical shape by pasting together the left and right ends of a single paper plate (paper blank 2) as shown in FIG.

[0016] In detail, the paper blank 2 comprises a first side wall piece portion 11, a second side wall piece portion 12 formed continuously from the left end of the first side wall piece portion 11, a third side wall piece portion 13 formed continuously from the left end of the second side wall piece portion 12, and a gluing portion 14 formed continuously from the left end of the third side wall piece portion 13.

[0017] The overlap portion 14 is attached to the right end portion of the first side wall piece portion 11 when the paper blank 2 is formed into a cylindrical shape.

[0018] The boundary between the first side wall piece portion 11 and the second side wall piece portion 12 is a linear first fold line portion 15. Similarly, the boundary between the second side wall piece portion 12 and the third side wall piece portion 13 is a linear second fold line portion 16.

[0019] When the paper blank 2 is formed into a cylindrical shape, the first side wall piece portion 11 and the third side wall piece portion 13 form a first side wall forming portion 17. The second side wall piece portion 12 forms a second side wall forming portion 18. The first side wall forming portion 17 and the second side wall forming portion 18 form a side wall portion 19.

[0020] The paper blank 2 also has a first bottom forming portion 20 formed continuously from the lower end portion, which is one end of the first side wall piece portion 11.

[0021] Furthermore, the paper blank 2 has a second bottom forming portion 30 formed continuously from the lower end portion, which is the end portion on one side of the second side wall piece portion 12, a third bottom forming portion 40 formed adjacent to the left side of the second bottom forming portion 30, and a fourth bottom forming portion 50 formed adjacent to the left side of the third bottom forming portion 40.

[0022] The paper blank 2 has a fifth bottom forming portion 60 formed continuously from the lower end portion, which is one end of the third side wall piece portion 13, and a sixth bottom forming portion 70 formed adjacent to the left side of the fifth bottom forming portion 60.

[0023] That is, the paper blank 2 has six bottom forming portions.

[0024] Here, a first bottom forming auxiliary part 35 is arranged from the second bottom forming part 30, protruding towards the first bottom forming part 20 located to the right. Similarly, a second bottom forming auxiliary part 65 is arranged from the fifth bottom forming part 60, protruding towards the fourth bottom forming part 50 located to the right.

[0025] The paper blank 2 also has a first top-forming portion 110 formed continuously from the upper end portion, which is the other end portion of the first side-wall piece portion 11.

[0026] The paper blank 2 also has a second top forming portion 120 formed continuously from the upper end portion, which is the other end portion of the first side wall piece portion 11 and the second side wall piece portion 12.

[0027] The paper blank 2 also has a third top forming portion 130 formed continuously from the upper end portion, which is the other end portion of the second side wall piece portion 12, a fourth top forming portion 140 formed adjacent to the left side of the third top forming portion 130, and a fifth top forming portion 150 formed adjacent to the left side of the fourth top forming portion 140.

[0028] The paper blank 2 also has a sixth top forming portion 160 formed continuously from the upper end portion, which is the other end portion of the second side wall piece portion 12 and the third side wall piece portion 13.

[0029] The paper blank 2 also has a seventh top forming portion 170 formed continuously from the upper end portion, which is the other end portion of the third side wall piece portion 13, and an eighth top forming portion 180 formed adjacent to the left side of the seventh top forming portion 170.

[0030] That is, the paper blank 2 has (N=8) head forming portions.

[0031] In addition, the boundary lines between the first side wall piece portion 11, the second side wall piece portion 12, and the third side wall piece portion 13 and each of the top portion forming portions 110 to 180 are convex arcs toward the first side wall piece portion 11, the second side wall piece portion 12, and the third side wall piece portion 13.

[0032] Each of the top forming portions 110 to 180 has a tapered shape, and a substantially triangular connecting portion is disposed between each of the top forming portions 110 to 180. That is, a first connection portion 210 is arranged between the first top portion forming portion 110 and the second top portion forming portion 120, a second connection portion 220 is arranged between the second top portion forming portion 120 and the third top portion forming portion 130, a third connection portion 230 is arranged between the third top portion forming portion 130 and the fourth top portion forming portion 140, a fourth connection portion 240 is arranged between the fourth top portion forming portion 140 and the fifth top portion forming portion 150, a fifth connection portion 250 is arranged between the fifth top portion forming portion 150 and the sixth top portion forming portion 160, a sixth connection portion 260 is arranged between the sixth top portion forming portion 160 and the seventh top portion forming portion 170, and a seventh connection portion 270 is arranged between the seventh top portion forming portion 170 and the eighth top portion forming portion 180. In addition, an eighth connection portion 280 is arranged on the right side of the first top connection portion 110, and the eighth connection portion 280 is attached to a connection overlap portion 290 arranged on the left side of the eighth top connection portion 180.

[0033] Furthermore, a first engagement portion 310 extends toward the right at the upper end of the third top forming portion 130. Furthermore, a second engagement portion 320 extends toward the right at the upper end of the seventh top forming portion 170.

[0034] The paper blank 2 with both ends adhered is folded flat at the first folding line 15 and the second folding line 16. When the paper blank 2 is folded, each of the bottom forming portions 20, 30, 40, 50, 60, 70 is folded back toward the inside of the paper blank 2 and inserted between the first side wall forming portion 17 and the second side wall forming portion 18.

[0035] In this folded state, the left end of the first bottom forming portion 20 is located closer to the first sidewall forming portion 17 than the first sidewall forming auxiliary portion 35, which is the right end of the second bottom forming portion 30. Furthermore, the left end of the second bottom forming portion 30 is located closer to the second sidewall forming portion 18 than the right end of the third bottom forming portion 40. Furthermore, the left end of the third bottom forming portion 40 is located closer to the second sidewall forming portion 18 than the right end of the fourth bottom forming portion 50. Furthermore, the left end of the fourth bottom forming portion 50 is located closer to the second sidewall forming portion 18 than the second sidewall forming auxiliary portion 65, which is the right end of the fifth bottom forming portion 60. Furthermore, the left end of the fifth bottom forming portion 60 is located closer to the first sidewall forming portion 17 than the right end of the sixth bottom forming portion 70. The left end of the sixth bottom forming portion 70 is located closer to the first sidewall forming portion 17 than the right end of the first bottom forming portion 20.

[0036] In this state, as the two folding lines 15, 16 of the folded container 1 are extended to the unfolded state, the bottom forming portions 20, 30, 40, 50, 60, 70 expand to close the bottom opening, as shown in Fig. 2. Then, as shown in Figs. 3 and 4, the upper edges of the first side wall forming portion 17 and the second side wall forming portion 18 constituting the side wall portion 19 become arc-shaped, the internal space becomes the container internal space S, and the bottom is formed by closing the lower end opening of the container internal space S, so that the bottom of the container 1 becomes hexagonal in plan view, and the container 1 is in the assembled state α.

[0037] In this way, by configuring each bottom forming portion 20, 30, 40, 50, 60, 70 to be folded back further toward the side wall forming portion than the bottom forming portion to the left, the container 1 can be transitioned from the folded state to the assembled state simply by pinching the folding lines 15, 16 of the side wall portion 19. Conversely, when folding, the container can be transitioned to the folded state simply by pushing each bottom forming portion 20, 30, 40, 50, 60, 70 toward the container internal space S and applying a load so as to fold the side wall forming portions 17, 18 at the folding lines 15, 16.

[0038] In addition, the boundary line between the first top forming portion 110 and the first connecting portion 210, the boundary line between the second top forming portion 120 and the second connecting portion 220, the boundary line between the third top forming portion 130 and the third connecting portion 230, the boundary line between the fourth top forming portion 140 and the fourth connecting portion 240, the boundary line between the fifth top forming portion 150 and the fifth connecting portion 250, the boundary line between the sixth top forming portion 160 and the sixth connecting portion 260, the boundary line between the seventh top forming portion 170 and the seventh connecting portion 270, and the boundary line between the eighth top forming portion 180 and the connecting overlap portion 290 are pre-folded.

[0039] The boundary line between the first top forming portion 110 and the eighth connecting portion 280, the boundary line between the second top forming portion 120 and the first connecting portion 210, the boundary line between the third top forming portion 130 and the second connecting portion 220, the boundary line between the fourth top forming portion 140 and the third connecting portion 230, the boundary line between the fifth top forming portion 150 and the fourth connecting portion 240, the boundary line between the sixth top forming portion 160 and the fifth connecting portion 250, the boundary line between the seventh top forming portion 170 and the sixth connecting portion 260, and the boundary line between the eighth top forming portion 180 and the seventh connecting portion 270 are pre-folded.

[0040] Here, the first engaging portion 310 and the second engaging portion 320 of the container 1 in the assembled state α are pinched with the fingers to bring them closer together, and the first engaging portion 310 and the second engaging portion 320 are engaged with each other, thereby forming an octagonal, flower-patterned top portion in a plan view having (N=8) corners, as shown in Fig. 5, and closing the upper opening of the container internal space S. In this way, a container 1 having a unique shape is formed, with a hexagonal bottom and an octagonal top portion, and with a flower-patterned top portion.

[0041] In detail, in two adjacent ceiling forming portions, a portion of one (L-1)th ceiling forming portion is located below the other (L)th ceiling forming portion, and a portion of the (N=8)th ceiling forming portion is located below the first ceiling forming portion, thereby forming a ceiling portion that is octagonal in plan view and has (N=8) number of corners, thereby blocking the upper end opening of the container internal space S. That is, a portion of the first head forming portion 110 is located below the second head forming portion 120, a portion of the second head forming portion 120 is located below the third head forming portion 130, a portion of the third head forming portion 130 is located below the fourth head forming portion 140, a portion of the fourth head forming portion 140 is located below the fifth head forming portion 150, a portion of the fifth head forming portion 150 is located below the sixth head forming portion 160, a portion of the sixth head forming portion 160 is located below the seventh head forming portion 170, a portion of the seventh head forming portion 170 is located below the eighth head forming portion 180, and a portion of the eighth head forming portion 180 is located below the first head forming portion 110, thereby forming a head portion that is octagonal in plan view and has a floral pattern.

[0042] This container 1 not only looks good, but also has the advantage that the boundaries between the first sidewall piece 11, the second sidewall piece 12, and the third sidewall piece 13 and each of the top-forming portions 110-180 are arcs that convex toward the first sidewall piece 11, the second sidewall piece 12, and the third sidewall piece 13. This not only enhances the appearance of the floral pattern of the top, but also makes it easier to maintain the box shape of the container 1 once the top opening is closed because each of the top-forming portions 110-180 exerts a force in a direction that attempts to maintain the closed shape, making it difficult to open the top opening. Furthermore, the transition from the folded state to the assembled state can be achieved with a single touch, resulting in extremely high work efficiency. Furthermore, the floral pattern-shaped top-forming portions 110-180 that close the top opening can also be easily assembled by pinching and engaging each of the engaging portions 310, 320. Furthermore, by engaging each engaging portion 310, 320, the position of the top forming portion that constitutes the top portion is fixed, so even if a pattern or the like is drawn across the stacked top forming portions, it is less likely to slip, making it easier to draw the design.

[0043] Example 2 The container member 400 is configured so that it can be formed into a cylindrical shape by pasting together the left and right ends of a single paper plate piece (paper blank 402) as shown in FIG.

[0044] In detail, the paper blank 402 comprises a first side wall piece portion 411, a second side wall piece portion 412 formed continuously from the left end of the first side wall piece portion 411, a third side wall piece portion 413 formed continuously from the left end of the second side wall piece portion 412, and an overlap portion 414 formed continuously from the left end of the third side wall piece portion 413.

[0045] The overlap portion 414 is attached to the right end portion of the first side wall piece portion 411 when the paper blank 402 is formed into a cylindrical shape.

[0046] The boundary between the first side wall piece portion 411 and the second side wall piece portion 412 is a linear first bending line portion 415. Similarly, the boundary between the second side wall piece portion 412 and the third side wall piece portion 413 is a linear second bending line portion 416.

[0047] When the paper blank 402 is formed into a cylindrical shape, the first side wall piece portion 411 and the third side wall piece portion 413 form a first side wall forming portion 417. The second side wall piece portion 412 forms a second side wall forming portion 418. The first side wall forming portion 417 and the second side wall forming portion 418 form a side wall portion 419.

[0048] The paper blank 402 also includes a first top-forming portion 510 formed continuously from the upper end of the first side-wall piece portion 411 .

[0049] The paper blank 402 also includes a second top-forming portion 520 formed continuously from the upper ends of the first side wall piece portion 411 and the second side wall piece portion 412 .

[0050] The paper blank 402 also has a third top forming portion 530 formed continuously from the upper end of the second side wall piece portion 412, a fourth top forming portion 540 formed adjacent to the left side of the third top forming portion 530, and a fifth top forming portion 550 formed adjacent to the left side of the fourth top forming portion 540.

[0051] The paper blank 402 also includes a sixth top portion forming portion 560 formed continuously from the upper ends of the second side wall piece portion 412 and the third side wall piece portion 413 .

[0052] The paper blank 402 has a seventh top forming portion 570 formed continuously from the upper end of the third side wall piece portion 413, and an eighth top forming portion 580 formed adjacent to the left side of the seventh top forming portion 570.

[0053] That is, the paper blank 402 has (N=8) top forming portions.

[0054] In addition, the boundary lines between the first side wall piece portion 411, the second side wall piece portion 412, and the third side wall piece portion 413 and each of the top forming portions 510 to 580 are convex arcs toward the first side wall piece portion 411, the second side wall piece portion 412, and the third side wall piece portion 413.

[0055] Each of the top forming portions 510 to 580 has a tapered shape, and a substantially triangular connecting portion is disposed between each of the top forming portions 510 to 580. That is, a first connection portion 610 is arranged between the first top portion forming portion 510 and the second top portion forming portion 520, a second connection portion 620 is arranged between the second top portion forming portion 520 and the third top portion forming portion 530, a third connection portion 630 is arranged between the third top portion forming portion 530 and the fourth top portion forming portion 540, a fourth connection portion 640 is arranged between the fourth top portion forming portion 540 and the fifth top portion forming portion 550, a fifth connection portion 650 is arranged between the fifth top portion forming portion 550 and the sixth top portion forming portion 560, a sixth connection portion 660 is arranged between the sixth top portion forming portion 560 and the seventh top portion forming portion 570, and a seventh connection portion 670 is arranged between the seventh top portion forming portion 570 and the eighth top portion forming portion 580. In addition, an eighth connection portion 680 is arranged on the right side of the first top connection portion 510, and the eighth connection portion 680 is attached to a connection overlap portion 690 arranged on the left side of the eighth top connection portion 580.

[0056] Furthermore, a first engagement portion 710 extends toward the right from the upper end of the third top forming portion 530. Furthermore, a second engagement portion 720 extends toward the right from the upper end of the seventh top forming portion 570.

[0057] The paper blank 402 with both ends glued is folded at the first folding line 415 and the second folding line 416 into a flattened folded state.

[0058] In this state, by extending the two folding lines 415, 416 of the folded container member 400 to unfold it, a cylindrical shape is formed as shown in Figure 7, and the space between the first side wall forming portion 417 and the second side wall forming portion 418 becomes the container internal space S.

[0059] In addition, the boundary line between the first top forming portion 510 and the first connecting portion 610, the boundary line between the second top forming portion 520 and the second connecting portion 620, the boundary line between the third top forming portion 530 and the third connecting portion 630, the boundary line between the fourth top forming portion 540 and the fourth connecting portion 640, the boundary line between the fifth top forming portion 550 and the fifth connecting portion 650, the boundary line between the sixth top forming portion 560 and the sixth connecting portion 660, the boundary line between the seventh top forming portion 570 and the seventh connecting portion 670, and the boundary line between the eighth top forming portion 580 and the connecting overlap portion 690 are pre-folded.

[0060] The boundary line between the first top forming portion 510 and the eighth connecting portion 680, the boundary line between the second top forming portion 520 and the first connecting portion 610, the boundary line between the third top forming portion 530 and the second connecting portion 620, the boundary line between the fourth top forming portion 540 and the third connecting portion 630, the boundary line between the fifth top forming portion 550 and the fourth connecting portion 640, the boundary line between the sixth top forming portion 560 and the fifth connecting portion 650, the boundary line between the seventh top forming portion 570 and the sixth connecting portion 660, and the boundary line between the eighth top forming portion 580 and the seventh connecting portion 670 are pre-folded.

[0061] Here, the first engaging portion 710 and the second engaging portion 720 of the container member 400 in the assembled state α are pinched with the fingers to bring them closer together, and the first engaging portion 710 and the second engaging portion 720 are engaged with each other, thereby forming an octagonal, flower-patterned top portion in a plan view having eight corners, which is the second predetermined number, as shown in Fig. 8, and closing the upper opening of the container internal space S. In this way, a structure K of the container member 400 (container) is formed, which has an octagonal top portion and a unique shape with a flower pattern on the top portion.

[0062] In detail, in two adjacent ceiling forming portions, a portion of one (L-1)th ceiling forming portion is located below the other (L)th ceiling forming portion, and a portion of the (N=8)th ceiling forming portion is located below the first ceiling forming portion, thereby forming a ceiling portion that is octagonal in plan view and has (N=8) number of corners, thereby blocking the upper end opening of the container internal space S. That is, a portion of the first head forming portion 510 is located below the second head forming portion 520, a portion of the second head forming portion 520 is located below the third head forming portion 530, a portion of the third head forming portion 530 is located below the fourth head forming portion 540, a portion of the fourth head forming portion 540 is located below the fifth head forming portion 550, a portion of the fifth head forming portion 550 is located below the sixth head forming portion 560, a portion of the sixth head forming portion 560 is located below the seventh head forming portion 570, a portion of the seventh head forming portion 570 is located below the eighth head forming portion 580, and a portion of the eighth head forming portion 580 is located below the first head forming portion 510, thereby forming a head portion that is octagonal in plan view and has a floral pattern.

[0063] This container member 400 not only looks good, but also has the advantage that the boundaries between the first sidewall piece 411, the second sidewall piece 412, and the third sidewall piece 413 and each of the top-forming portions 510-580 are arcs that convex toward the first sidewall piece 411, the second sidewall piece 412, and the third sidewall piece 413. This not only enhances the appearance of the floral pattern of the top, but also makes it easier to maintain the box shape of the container member 400 once the top opening is closed because each of the top-forming portions 510-580 exerts a force in a direction that attempts to maintain the closed shape, making it difficult to open the top opening. Furthermore, the transition from the folded state to the assembled state can be achieved with a single touch, resulting in extremely high work efficiency. Furthermore, the floral pattern-shaped top-forming portions 510-580 that close the top opening can also be easily assembled by pinching and engaging each of the engaging portions 710, 720. Furthermore, by engaging each engaging portion 710, 720, the position of the top forming portion that constitutes the top portion is fixed, so even if a pattern or the like is drawn across the stacked top forming portions, it is less likely to slip, making it easier to draw the design.

[0064] In the above embodiment, the dimensions and shapes of each part can be freely selected as appropriate, and the materials can also be selected as appropriate. In the above-mentioned Example 1, the number of corners of the top and bottom polygons in plan view are different, but this is not limited to this, and the container may have a polygonal structure in which the number of corners of the top and bottom are the same. [Explanation of symbols]

[0065] 1 container 2,402 paper blanks 11,411 1st side wall small piece 12,412 2nd side wall small piece 13,413 Third side wall small piece 14,414 overlapping area 15,415 First bending line 16,416 Second bending line 17,417 First side wall forming portion 18,418 Second side wall forming portion 19,419 Side wall 20 First bottom forming section 30 Second bottom forming section 35 First bottom forming auxiliary part 40 Third bottom forming section 50 Fourth bottom forming part 60 Fifth bottom forming part 65 Second bottom forming auxiliary part 70 6th bottom forming part 110,510 First Heaven Formation 120,520 Second Heaven Formation 130,530 Third Heaven Formation 140,540 Fourth Heaven Formation 150,550 Fifth Heaven Formation 160,560 Sixth Heaven Formation 170,570 Seventh Heaven Formation 180,580 Eighth Heaven Formation Division 210,610 First connection part 220,620 Second connection part 230,630 Third connection part 240,640 4th connection part 250,650 5th connection 260,660 6th connection 270,670 7th connection 280,680 8th connection 290,690 Connection margin 310,710 First engaging part (holding structure) 320,720 Second engaging part (holding structure) 400 Container parts α Assembled state K Container structure

Claims

1. A side wall portion having a cylindrical shape is provided, The side wall portion is divided into two side wall forming portions by two bending lines along the axis of the tube, (N) ceiling forming portions extending from the upper end of the side wall portion and forming a ceiling portion are provided, In the folded state, the side wall portion is folded along the folding line portion, and the two side wall forming portions are overlapped, In an assembled state in which the side wall portions are formed into a container shape, a cylindrical shape is formed by the two side wall forming portions, and the space between the side wall forming portions becomes the container internal space, and in the two adjacent top portion forming portions, a portion of one (L-1)th top portion forming portion is positioned so as to overlap under the other (L)th top portion forming portion, and a portion of the (N)th top portion forming portion is positioned so as to overlap under the first top portion forming portion, thereby forming a top portion that is a polygon in plan view having (N) number of sides, and the upper end opening of the container internal space is closed, (where L is a natural number greater than or equal to 2 and less than or equal to N) The boundary line between the side wall portion and the top portion forming portion is formed by an arc that is convex toward the side wall portion. A container structure characterized by:

2. The top forming portion is provided with a holding structure that holds a polygon in a plan view having N number of corners in the assembled state. The container structure of claim 1.

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