Folding container

Abstract

To provide a folding container that allows a person to put his finger selectively from the outside or inside.SOLUTION: A folding container 10 is provided with bulging portions 33, 43 that bulge outwardly formed at the upper ends of a first side wall 30 and a second side wall 40. When lifting the folding container 10 in an assembled state, the folding container 10 becomes easier to be lifted by putting a finger on the inside of the folding container 10 to upper walls 33C, 43C of the bulging portions 33, 43 arranged on the first side wall 30 or second side wall 40 or putting a finger on the outside of the folding container 10 to the lower walls 33B, 43B.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a foldable container having a finger hook for hanging fingers. [Background technology]

[0002] 2. Description of the Related Art Conventionally, containers that are provided with finger hooks on the outer surface of a side wall are known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 60-105314 (Fig. 1, etc.) Summary of the Invention [Problem to be solved by the invention]

[0004] In some situations, it may be easier to hold this type of container by hooking your fingers from the inside, and there is a demand for a container that allows you to selectively hook your fingers from either the outside or the inside. [Means for solving the problem]

[0005] One aspect of the invention made to solve the above-mentioned problems is a folding container whose upper end is formed by a frame and which is folded by lifting up one set of four side walls and folding the remaining set in half between the frame and a bottom wall, wherein the side walls are provided with an outer finger hook for hooking fingers from the outside when lifting the folding container, and an inner finger hook for hooking fingers from the inside. Effect of the Invention

[0006] According to one aspect of the invention, an outer finger hook portion for hooking fingers from the outside and an inner finger hook portion for hooking fingers from the inside are provided, so that fingers can be selectively hooked from the outside or the inside depending on the situation. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a folding container according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view of the folding container in a folded state. [Diagram 3] FIG. 3 is a perspective view of a folding container in the process of being folded. [Figure 4] FIG. 4 is a perspective view of the lower surface of the upper frame. [Diagram 5] FIG. 5 is a perspective view of an upper first side wall. [Figure 6] FIG. 6 is a perspective view of an upper first side wall. [Figure 7] FIG. 7 is an enlarged perspective view of the upper first side wall. [Figure 8] FIG. 8 is a side cross-sectional view of the folding container cut in the long side direction. [Figure 9] FIG. 9 is a perspective view of the second side wall. [Figure 10] FIG. 10 is a perspective view of the second side wall. [Figure 11] FIG. 11 is an enlarged perspective view of the second side wall. [Figure 12] FIG. 12 is a side cross-sectional view of the folding container cut in the short side direction. [Figure 13] FIG. 13 is a perspective view of two foldable containers arranged side by side. [Figure 14] FIG. 14 is a cross-sectional perspective view of two folding containers arranged side by side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] [First embodiment] A folding container 10 according to the first embodiment will be described with reference to Fig. 1 to Fig. 14. As shown in Fig. 1, the folding container 10 of this embodiment has a rectangular parallelepiped shape with a rectangular planar shape and an open top. The folding container 10 is configured by assembling a pair of first side walls 30 opposed in the short side direction and a pair of second side walls 40 opposed in the long side direction between an upper frame 20 provided at the upper end and the lower end and a bottom wall 11, and can be transformed into an assembled state shown in Fig. 1 and a folded state shown in Fig. 2.

[0009] 1 and 3, the bottom wall 11 has an outer edge protruding wall 11A that stands from the entire outer edge. The outer edge protruding wall 11A on the short side of the bottom wall 11 is provided with a locking protrusion 11B that extends inward from the middle of its height. This locking protrusion 11B can be locked with a locking hole 40K (see FIG. 10) provided in the lower end of the second side wall 40. In addition, a plurality of lower hinge portions 11D are formed on the long side of the bottom wall 11.

[0010] As shown in FIG. 1 and FIG. 4, the upper frame 20 has a square groove shape having a frame-shaped upper frame wall 21, a frame outer wall 22 hanging down from the outer edge, and a frame inner wall 23 hanging down from the inner edge. The frame inner wall 23 has a long side inner wall 23A arranged on the long side of the upper frame 20 and a short side inner wall 23B arranged on the short side of the upper frame 20. The lower end of the long side inner wall 23A is located above the lower end of the frame outer wall 22, and the lower end of the short side inner wall 23B is located above the lower end of the long side inner wall 23A. The frame outer wall 22 and the frame inner wall 23 are connected by a plurality of ribs 24. In addition, a chamfered portion 20M is formed in the center of the short side of the upper frame 20 by chamfering the outer corner (i.e., the intersection of the frame upper wall 21 and the frame outer wall 22). In addition, the upper frame 20 is chamfered at the intersection between the frame upper wall 21 and the frame outer wall 22 and at the entire intersection between the frame upper wall 21 and the frame inner wall 23, except for the chamfered portion 20M. Note that the frame outer wall 22 of the longer side portion of the upper frame 20 is formed with a recess 22U to which a sticker or the like can be attached.

[0011] A plurality of first upper hinge portions 25 and second upper hinge portions 26 are provided on the long and short sides of the upper frame 20. In the vertical direction, the first upper hinge portions 25 are located at an intermediate height between the lower end of the long side inner wall 23A and the lower end of the frame outer wall 22, and the second upper hinge portions 26 are located at an intermediate height between the lower end of the short side inner wall 23B and the lower end of the long side inner wall 23A. In other words, the second upper hinge portions 26 are located higher than the first upper hinge portions 25.

[0012] As shown in Figs. 1 and 3, the first side wall 30 is divided into two parts, an upper first side wall 31 and a lower first side wall 37, at approximately the center in the vertical direction. The upper first side wall 31 and the lower first side wall 37 are rotatably connected to each other via a middle hinge portion 30H. In addition, in the first side wall 30, a hinge portion 31H provided at the upper end of the upper first side wall 31 is rotatably connected to the first upper hinge portion 25 of the upper frame 20, while a hinge portion 37H of the lower first side wall 37 is rotatably connected to the lower hinge portion 11D of the bottom wall 11. As a result, the first side wall 30 can be folded in two starting from approximately the center in the vertical direction.

[0013] As shown in Figures 1 and 3, the second side wall 40 has a hinge portion 40H at the upper end portion rotatably connected to the second upper hinge portion 26 of the upper frame 20, and is foldable by flipping up inward.

[0014] In the assembled state of the folding container 10, the second side wall 40 has a locking hole 40K at its lower end locked by the locking piece 11B, restricting its rotation. Also, the second side wall 40 is sandwiched between the pair of first side walls 30, restricting the first side walls 30 from being folded inward.

[0015] The folding container 10 can be folded as follows. First, the pair of second side walls 40 are pushed inward strongly to release the engagement between the locking protrusions 11B and the locking holes 40K, and the pair of second side walls 40 are flipped up and folded into the upper frame 20. Next, the pair of first side walls 30 are folded inward in half (see FIG. 3). Then, the upper frame 20 overlaps the outer edge protrusion wall 11A of the bottom wall 11, and the folding container 10 enters a folded state (see FIG. 2).

[0016] To put the folding container 10 into an assembled state, the upper frame 20 is lifted upward relative to the bottom wall 11. Then, the upper first side wall 31 and the lower first side wall 37 of the pair of first side walls 30 open, and the second side wall 40 rotates downward by its own weight and enters between the pair of first side walls 30. Then, when the second side wall 40 is pressed from inside to rotate it downward, the locking protrusion 11B of the bottom wall 11 engages with the second side wall 40 to hold the second side wall 40 in an upright position, and the second side wall 40 enters between the first side walls 30 to hold the first side wall 30 in an upright position, and the folding container 10 is put into an assembled state.

[0017] Here, in the folding container 10 of this embodiment, bulging portions 33, 43 that bulge outward are formed at the upper ends of the first side wall 30 and the second side wall 40. Below, the upper first side wall 31 and the second side wall 40 of the first side wall 30, including the bulging portions 33, 43, will be described in detail.

[0018] 5 and 6, the upper first side wall 31 of the first side wall 30 has an upper wall 31U and a lower wall 31D, with a hinge portion 31H arranged on the upper wall 31U and a middle hinge portion 30H arranged on the lower wall 31D. The hinge portion 31H protrudes upward from the upper wall 31U of the upper first side wall 31, and its upper end portion 31K is curved in an arc shape when viewed from the longitudinal direction of the upper wall 31U.

[0019] The upper wall 31U and the lower wall 31D of the upper first side wall 31 are connected by a base portion 31A and side portions 31B at both left and right ends. In the inside and outside directions of the folding container 10, the base portion 31A connects the inner ends of the upper wall 31U and the lower wall 31D, while the side portions 31B connect the outer ends of the upper wall 31U and the lower wall 31D, and a step is formed between the base portion 31A and the side portions 31B.

[0020] The above-mentioned bulging portion 33 is formed in the center of the upper end of the upper first side wall 31 in the left-right direction. As shown in FIG. 7, the bulging portion 33 is formed from the upper end of the upper first side wall 31 to a position near the upper end of the base portion 31A, and the upper wall 31U is cut out at that portion. The bulging portion 33 has a horizontally long rectangular shape when viewed from the outside of the folding container 10, and has a bulging main wall 33A parallel to the base portion 31A, a lower wall 33B connected to the base portion 31A from a position near the lower end of the bulging main wall 33A, an upper wall 33C protruding inward from the upper end of the bulging main wall 33A, and a side wall 33D connected to the base portion 31A from a side edge of the bulging main wall 33A. The lower end of the bulging main wall 33A is located about one plate thickness below the lower wall 33B. Further, the lower side of the side wall 33D extends obliquely downward from the lower end of the bulging main wall 33A.

[0021] 5 and 8, the upper wall 33C of the bulging portion 33 extends from the upper end of the bulging main wall 33A to a position about halfway through the thickness of the upper first side wall 31 while curving obliquely upward so as to be located on the same curved surface as the upper end 31K of the hinge portion 31H. The lower end of the long side inner wall 23A of the upper frame 20 is located slightly above the upper end of the upper first side wall 31, and the lower end of the long side inner wall 23A and the inner end of the upper wall 33C of the bulging portion 33 are close to each other. On the other hand, the lower end of the frame outer wall 22 of the upper frame 20 is located at an intermediate height between the upper wall 33C and the lower wall 33B of the bulging portion 33, and about the upper 1 / 3 of the bulging portion 33 is covered from the outside by the frame outer wall 22 of the upper frame 20.

[0022] The bulging main wall 33A of the bulging portion 33 has two outwardly protruding ridges 34 arranged vertically. Both ridges 34 extend in the left-right direction, one of which is disposed at the lower end of the bulging main wall 33A, and the other is disposed at a height between the lower end of the frame outer wall 22 and the lower ridge 34. Here, the upper first side wall 31 can swing in the inward and outward direction of the folding container 10 relative to the upper frame 20 due to the play of the hinge. In the assembled state, the tip of the ridge 34 is usually located inside the outer surface of the frame outer wall 22 of the upper frame 20 in the inward and outward direction of the folding container 10, and the ridge 34 is not allowed to protrude from the outer shape of the folding container 10. When the upper first side wall 31 is pressed outward, the ridge 34 protrudes from the outer surface of the frame outer wall 22 of the upper frame 20.

[0023] As shown in Fig. 9 and Fig. 10, the second side wall 40 has an upper wall 40U and a lower wall 40D, and a hinge portion 40H is arranged on the upper wall 40U. A transverse rib 40E is provided at a position of the second side wall 40 near the lower wall 40D, and a plurality of reinforcing ribs 40F are formed between the lower wall 40D and the transverse rib 40E. The upper wall 40U and the transverse rib 40E are connected by a base portion 40A and a side portion 40B. In the inside-outside direction of the folding container 10, the base portion 40A connects the inner ends of the upper wall 40U and the transverse rib 40E, while the side portion 40B connects the outer ends of the upper wall 40U and the transverse rib 40E, and a step is formed between the base portion 40A and the side portion 40B. The horizontal rib 40E and the lower wall 40D are entirely connected to each other except for the locking holes 40K by a connecting wall 40C which is flush with the base portion 40A.

[0024] In the second side wall 40, the above-mentioned bulging portion 43 is formed at a position near the upper end of the base portion 40A. The bulging portion 43 shown in Figs. 11 and 12 has a horizontally long rectangular shape when viewed from the outside of the folding container 10, similar to the bulging portion 33 of the upper first side wall 31, and has a bulging main wall 43A parallel to the base portion 40A, an upper wall 43C protruding inward from the upper end of the bulging main wall 43A and connecting to the base portion 40A, a lower wall 43B protruding inward from a position near the lower end of the bulging main wall 43A and connecting to the base portion 40A, and a side wall 43D connecting from the side of the bulging main wall 43A to the base portion 40A. The upper wall 40U of the second side wall 40 and the upper wall 43C of the bulging portion 33 are connected by a plurality of reinforcing ribs 40G. The lower end of the bulging main wall 43A is located about one plate thickness below the lower wall 43B. The lower side of the side wall 43D extends obliquely downward from the lower end of the bulging main wall 43A. In addition, the bulging portion 43 of the second side wall 40 is aligned with the chamfered portion 20M of the upper frame 20 in the up-down direction.

[0025] 12, the lower end of the frame outer wall 22 of the upper frame 20 is located slightly above the upper end of the bulging main wall 43A, and the two are close to each other. As a result, the frame outer wall 22 of the upper frame 20 covers the portion of the second side wall 40 above the bulging portion 43 from the outside, and the bulging main wall 43A of the bulging portion 43 is entirely exposed from the outside. In addition, the lower end of the short-side inner wall 23B of the upper frame 20 is located slightly above the upper end of the second side wall 40, and the two are close to each other.

[0026] As shown in Figs. 11 and 12, three protrusions 44 protruding outward are formed in a line up and down on the protruding main wall 43A of the protruding portion 43. All three protrusions 44 extend in the left-right direction, one is disposed at the lower end of the protruding main wall 43A, and the remaining two are disposed at two positions that divide the protruding main wall 43A into thirds. Here, like the upper first side wall 31, the second side wall 40 can also swing in the inward and outward direction of the folding container 10 relative to the upper frame 20 due to the play of the hinge. In the assembled state, the tip of the protrusion 44 is usually located inside the outer surface of the frame outer wall 22 of the upper frame 20 in the inward and outward direction of the folding container 10, and the protrusion 44 is configured not to protrude from the outer shape of the folding container 10. When the second side wall 40 is pressed outward, the protrusion 44 protrudes from the outer surface of the frame outer wall 22 of the upper frame 20.

[0027] Next, the action and effect of the folding container 10 will be described. For example, the folding container 10 is stored in a folded state (see FIG. 2) when not in use, and is assembled (see FIG. 1) when in use, and is transported or stored with contents placed inside. Here, when lifting the folding container 10 of this embodiment in the assembled state, the folding container 10 can be easily lifted by hooking fingers on the inside of the folding container 10 (from the inside) on the upper walls 33C, 43C of the bulging portions 33, 43 arranged on the first side wall 30 or the second side wall 40, or by hooking fingers on the outside of the folding container 10 (from the outside) on the lower walls 33B, 43B.

[0028] Here, when there is something to be stored in the folding container 10, for example, by hooking one's fingers from the outside on the lower walls 43B of the bulging portions 43 of a pair of second side walls 40, the folding container 10 can be easily lifted with both hands. At this time, since the protrusions 44 protrude from the lower ends of the bulging main walls 43A, the fingers hooked on the lower walls 43B also come into contact with the lower surfaces of the protrusions 44, and the feeling of the fingers coming into contact with the lower ends of the bulging main walls 43A can be softened. Also, when the folding container 10 is empty, for example, by hooking one's fingers from the inside on the upper walls 33C of the bulging portions 33 of one first side wall 30, one folding container 10 can be held on each side, and more folding containers 10 can be carried at one time.

[0029] Also, by lining up two folding containers 10, hooking a thumb from inside on the upper wall 33C of the bulging portion 33 of the first side wall 30 of one folding container 10 and hooking other fingers from inside on the upper wall 33C of the bulging portion 33 of the first side wall 30 of the other folding container 10, it is possible to carry two folding containers 10 with one hand (four folding containers 10 with both hands). In other words, when two folding containers are lined up on a placement surface (ground, workbench, etc.) on which the folding containers are placed, the inner finger hook portions 33C, 43C of the adjacent first side wall 30 or second side wall 40 and the frame bodies 20 (for example, the frame upper wall 21, the frame inner wall 23) form gripping portions that can be gripped.

[0030] As described above, according to this embodiment, the folding container 10 is provided with the lower walls 33B, 43B of the bulging parts 33, 43 for hooking fingers from the outside and the upper walls 33C, 43C of the bulging parts 33, 43 for hooking fingers from the inside, so that fingers can be selectively hooked from the outside or the inside depending on the situation. Furthermore, since the bulging parts 33, 43 are disposed in the horizontal center of the first side wall 30 and the second side wall 40, the folding container is unlikely to tilt when lifting it regardless of which side the fingers are hooked on. Note that, although one hand may be hooked from the outside on the lower walls 33B, 43B of the bulging parts 33, 43 when the folding container 10 is empty, when the folding container 10 is held next to the body, it is considered that the wrist is less likely to be strained if the fingers are hooked from the inside on the upper walls 33C, 43C of the bulging parts 33, 43, because the wrist does not need to be turned.

[0031] In addition, since the upper portion of the bulging portion 43 of the second side wall 40 of the upper frame 20 is a chamfered portion 20M, when a hand is placed from the upper wall 43C or the lower wall 43B of this bulging portion 43 to the upper end of the folding container 10, the hand is prevented from hitting the corner of the intersection between the frame upper wall 21 and the frame outer wall 22 of the upper frame 20, and the feeling received by the hand can be softened. Furthermore, since the lower end of the frame inner wall 23 of the upper frame 20 and the upper ends of the first side wall 30 and the second side wall 40 are close to each other, the step between them can be made small, and the feeling on the hand can be softened when a hand is placed along the frame inner wall 23 of the upper frame 20 with fingers from the inside.

[0032] As described above, when the folding container 10 is empty or the contents are light, it is conceivable to hold two folding containers 10 in one hand. Specifically, as shown in Fig. 13, it is conceivable to arrange two folding containers 10, for example, with the first side walls 30 adjacent to each other, place the thumb on the upper wall 33C of the bulging portion 33 of one first side wall 30, and place the remaining four fingers on the upper wall 33C of the bulging portion 33 of the other first side wall 30, and grip the upper edges of the first side walls 30 together. At this time, in this embodiment, the bulging portions 33, 43 bulge outward, and the portion where the fingers are hooked from the inside is located higher than when the bulging portions bulge inward, so that it is easier to grip the upper edges of the first side walls 30 together.

[0033] Furthermore, when two folding containers 10 are lifted by, for example, grasping the upper edges of the first side walls 30 and pressing them together so that the bulging main walls 33A of the bulging portions 33 approach each other, if the folding containers 10 are slightly shifted vertically, the protrusions 34 can be engaged with each other vertically as shown in FIG. 14. This makes it possible to prevent one folding container 10 from slipping and falling off. Similarly, when two folding containers 10 are lifted with their second side walls 40 adjacent to each other, the protrusions 44 can be engaged with each other. Note that when the first side walls 30 are lifted next to each other, the lower end of the upper frame 20 of one folding container 10 abuts against the step surface below the recess 22U of the frame outer wall 22 of the upper frame 20 of the other folding container 10, which also prevents the folding container 10 from slipping off.

[0034] In addition, since the protrusions 34, 44 do not normally protrude outward from the upper frame 20, when multiple foldable containers 10 are stored side by side, interference with adjacent foldable containers 10 and the protrusions 34, 44 are prevented from getting caught on anything.

[0035] [Other embodiments] The bulging portions 33, 43 may be disposed on only one of the first side wall 30 and the second side wall 40.

[0036] The bulging portions 33, 43 may be configured to be covered from the outside by the upper frame 20.

[0037] The outer finger hook portion and the inner finger hook portion may be misaligned in the left-right direction.

[0038] The outer finger hook portion may be provided on only one of the first side wall 30 and the second side wall 40, and the inner finger hook portion may be provided on only the other.

[0039] The outer finger hook portion may be a rib protruding outward from the first side wall 30 or the second side wall 40, and the inner finger hook portion may be a rib protruding inward from the first side wall 30 or the second side wall 40.

[0040] The base portions 31A, 40A connect the outer ends of the upper walls 31U, 40U, the lower wall 31D, and the horizontal ribs 40E, while the side portions 31B, 40B connect the inner ends of the upper walls 31U, 40U, the lower wall 31D, and the horizontal ribs 40E, and a structure in which there is a step between the base portion 31A and the side portion 31B may be used.

[0041] The bulging portion may bulge inward, the upper wall may be configured so that fingers can be hooked from the outside, and the lower wall may be configured so that fingers can be hooked from the inside.

[0042] The protrusions 34, 44 may be arranged, for example, on the frame outer wall 22 of the upper frame 20, or on a portion of the first side wall 30 or the second side wall 40 above the bulging portions 33, 43 (only when this portion is exposed from the outside). Also, instead of a linear protrusion, the protrusions may be circular or angular.

[0043] The part where fingers can be hooked from the outside (outer finger hook part) may be located at the bottom and the part where fingers can be hooked from the inside (inner finger hook part) may be located at the top, or the part where fingers can be hooked from the outside (outer finger hook part) may be located at the top and the part where fingers can be hooked from the inside (inner finger hook part) may be located at the bottom.

[0044] In the above embodiment, the side walls 30, 40 move due to play in the hinges, allowing the protrusions 34, 44 to engage with each other. However, it is also possible to configure the upper edges of the side walls 30, 40 to be grasped and lifted, and the bulging main walls 33A, 43A of the bulging portions 33, 43 to be pressed together so that they approach each other, causing the upper frames 20 (outer frame walls 22) to come into contact with each other and deform, allowing the protrusions 34, 44 to engage with each other.

[0045] <Additional Notes> The following describes the feature groups extracted from the above-described embodiments, while indicating their effects, etc., as necessary. Note that, in the following, for ease of understanding, the corresponding configurations in the above-described embodiments are appropriately indicated in parentheses, but these feature groups are not limited to the specific configurations indicated in parentheses.

[0046] [Feature 1] A folding container (10) has an upper end formed of a frame (20), and is folded by flipping up one set (40) of four side walls (30, 40) and folding the remaining set (30) in half between the frame (20) and a bottom wall, The side walls (30, 40) of the folding container (10) are provided with outer finger hooks (33B, 43B) for hooking fingers from the outside when lifting the folding container (10), and inner finger hooks (33C, 43C) for hooking fingers from the inside.

[0047] According to the folding container of feature 1, an outer finger hook for hooking fingers from the outside and an inner finger hook for hooking fingers from the inside are provided, so that fingers can be selectively hooked from the outside or the inside depending on the situation.

[0048] [Feature 2] The folding container (10) according to Feature 1, wherein the outer finger hook portion and the inner finger hook portion (33C, 43C) are arranged side by side in the vertical direction in the horizontal center portion of the side walls (30, 40).

[0049] According to the folding container of feature 2, both the outer finger hook portion and the inner finger hook portion are disposed in the horizontal center of the side wall, so that when lifting the folding container, the folding container is less likely to tilt regardless of which finger is hooked on it.

[0050] [Feature 3] The side walls (30, 40) are provided at their upper portions with bulging portions (33, 43) that bulge outwardly and include a lower wall (33B, 43B), an upper wall (33C, 43C), and a connecting wall (33A, 43A) connecting the lower wall (33B, 43B), and an upper wall (33C, 43C), and The folding container (10) according to feature 2, wherein the lower wall (33B, 43B) of the bulging portion (33, 43) serves as the outer finger hook portion (33B, 43B), and the upper wall (33C, 43C) of the bulging portion (33, 43) serves as the inner finger hook portion (33C, 43C).

[0051] As an example of hooking fingers from the inside, there is a case where two folding containers are held in one hand side by side. In this case, it is conceivable to hook fingers on the inner finger hooks of adjacent side walls and grip the upper edge, but according to feature 3, since the bulging portion bulges inward and the inner finger hook is disposed higher than when the lower wall serves as the inner finger hook, it is easier to grip the upper edge.

[0052] [Feature 4] A protrusion (34, 44) is provided around the inner finger hook (33C, 43C) or above the inner finger hook (33C, 43C) on the outer surface of the foldable container (10), The foldable container (10) according to any one of features 1 to 3, wherein when two foldable containers (10) are arranged side by side and their upper edges are gripped with fingers hooked on the inner finger hook portions (33C, 43C) of the adjacent side walls (30, 40), the protrusions (34, 44) can be engaged with each other in the vertical direction.

[0053] According to the folding container of feature 4, when two folding containers are placed side by side and their upper edges are gripped, the protrusions engage with each other in the vertical direction, thereby preventing one of the folding containers from slipping off.

[0054] [Feature 5] The side walls (30, 40) are provided at their upper portions with bulging portions (33, 43) that bulge outward and include a lower wall (33B, 43B), an upper wall (33C, 43C), and a connecting wall (33A, 43A) connecting the lower wall (33B, 43B), and the upper wall (33C, 43C) of the bulging portion (33, 43) serves as the inner finger hook portion (33C, 43C), The folding container (10) according to feature 4, wherein the protrusions (34, 44) are arranged on the connecting walls (33A, 43A) and do not protrude from the frame body (20) under normal circumstances, and when the connecting walls (33A, 43A) are pressed against each other with two folding containers (10) arranged side by side, the protrusions (34, 44) protrude from the frame body (20) and engage with each other.

[0055] According to the folding container of feature 5, for example, when the folding container is placed on the container, the protrusion does not protrude beyond the upper frame, so that the protrusion is unlikely to get caught on anything or become a hindrance.

[0056] [Feature 6] The outer finger hook portion (33B, 43B) and the inner finger hook portion (33C, 43C) are disposed on the upper portion of the side wall (30, 40), The frame body (20) has a rectangular groove shape including a frame upper wall (21), a frame inner wall (23), and a frame outer wall (22). An intersection between the frame upper wall (21) and the frame outer wall (22) and an intersection between the frame upper wall (21) and the frame inner wall (23) are curved or chamfered, The inner finger hooks (33C, 43C) are located near the lower portion of the frame body (20) or above the lowermost end portion of the frame body (20), A folding container (10) according to any one of Features 1 to 5, wherein, when two folding containers (10) are arranged side by side, the inner finger hook portions (33C, 43C) of the adjacent side walls (30, 40) and the frame body (20) form a grippable gripping portion.

[0057] According to the folding container of feature 6, when a hand is placed from the outer finger hook or the inner finger hook to the upper end of the folding container, the feeling of the hand hitting the intersection of the upper frame wall and the outer frame wall of the frame body and the intersection of the upper frame wall and the inner frame wall can be softened. In addition, when two folding containers are held side by side with one hand, it is conceivable to hold the upper edge parts of the frames by placing the fingers on the inner finger hooks of the adjacent side walls and straddling the frames, and in this case, the feeling of the hand hitting the intersection of the upper frame wall and the inner frame wall can be softened. Note that the term "curved surface" includes, for example, a curved shape or a cross section having an approximately arc shape, and the term "chamfered edge" includes an inclined surface, C-chamfered edge, and R-chamfered edge.

[0058] [Feature 7] The frame body (20) has a frame upper wall (21), a frame inner wall (23), and a frame outer wall (22), A folding container (10) according to any one of Features 1 to 6, wherein a portion of the upper end of the side wall (30, 40) located above the inner finger hook portion (33C, 43C) or the inner finger hook portion (33C, 43C) abuts against or is adjacent to a lower end of the frame inner wall (23).

[0059] According to the folding container of feature 7, the portion of the upper end of the side wall that is located above the inner finger hook, or the inner finger hook, abuts or is close to the lower end of the inner frame wall of the frame body. This prevents a step from being created between the frame body and the side wall, and makes it possible to soften the feeling in the hand when the fingers are hooked on the inner finger hook and the hand is placed along the inner frame wall of the frame body.

[0060] In addition, although this specification and drawings disclose specific examples of the technology included in the scope of the claims, the technology described in the claims is not limited to these specific examples, but includes various modifications and variations of the specific examples, as well as parts of the specific examples taken alone. [Explanation of symbols]

[0061] 10 Folding Container 11 Bottom wall 20 Upper frame (frame body) 30 First side wall 33 Bulge 33A Bulging main wall 33B Lower wall (outside finger rest) 33C Upper wall (inner finger rest) 34 protrusion 40 Second side wall 43 Bulge 43A Bulging main wall 43B Lower wall (outer finger rest) 43C Upper wall (inner finger rest) 44 Projection (protrusion)

Claims

1. A folding container in which an upper end portion is constituted by a frame, one set of four side walls is lifted up, and the remaining set is folded in half between the frame and a bottom wall, thereby folding the container into a folded state, The side wall of the folding container is provided with an outer finger hook portion for hooking fingers from the outside when lifting the folding container, and an inner finger hook portion for hooking fingers from the inside.

2. The foldable container according to claim 1 , wherein the outer finger hook portion and the inner finger hook portion are arranged side by side in the up-down direction at a horizontal center portion of the side wall.

3. The side wall is provided with a bulging portion at an upper portion thereof, the bulging portion bulging outwardly and including a lower wall, an upper wall, and a connecting wall connecting the lower wall and the upper wall, 3. The foldable container according to claim 2, wherein the lower wall of the bulging portion serves as the outer finger hook, and the upper wall of the bulging portion serves as the inner finger hook.

4. A protrusion is provided around the inner finger hook portion or above the inner finger hook portion on the outer surface of the folding container, 4. The folding container according to claim 1, wherein when two folding containers are arranged side by side and upper edge portions of adjacent side walls are gripped with fingers hooked on the inner finger hook portions, the protrusions can be engaged with each other in the vertical direction.

5. The side wall is provided with a bulging portion at an upper portion thereof, the bulging portion bulging outwardly and including a lower wall, an upper wall, and a connecting wall connecting the lower wall and the upper wall, the upper wall of the bulging portion being the inner finger hook portion, The foldable container according to claim 4, wherein the protrusions are arranged on the connecting wall, do not protrude from the frame body under normal circumstances, and protrude from the frame body and engage with each other when the connecting walls are pressed against each other with two foldable containers arranged side by side.

6. The outer finger hook portion and the inner finger hook portion are disposed on an upper portion of the side wall, The frame body has a rectangular groove shape having a frame upper wall, a frame inner wall, and a frame outer wall, An intersection between the frame upper wall and the frame outer wall and an intersection between the frame upper wall and the frame inner wall are curved or chamfered, The inner finger hook portion is located near the lower portion of the frame body or above the lowermost end portion of the frame body, 4. The folding container according to claim 1, wherein when two folding containers are arranged side by side, the inner finger hook portions of the adjacent side walls and the frame body form a grippable gripping portion.

7. The frame body has a rectangular groove shape having a frame upper wall, a frame inner wall, and a frame outer wall, 4. The folding container according to claim 1, wherein a portion of the upper end of the side wall located above the inner finger hook portion or the inner finger hook portion abuts against or is adjacent to a lower end of the frame inner wall.

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