JP4398714B2 - Folding container - Google Patents

Description

The present invention relates to a folding container that can be folded so that a side wall disposed so as to surround the bottom portion overlaps the bottom portion.

At the bottom of the folding container, when the assembled folding containers are stacked, a bottom fitting part is formed that fits into the opening of the folding container located below. By fitting the bottom fitting part formed on the bottom part into the opening of the folding container located below, the folding container located above does not move horizontally relative to the folding container located below. It is configured as follows.

As described above, since the bottom fitting portion is formed at the bottom of the folding container, when the folding container is placed on the floor surface or the ground, only the bottom fitting portion is placed on the floor surface. A bottom portion that is in contact with the ground or the like and has no bottom fitting portion is not in contact with the floor or the ground. Therefore, for example, when a load is applied to the corner of the folding container from above, the corner of the bottom that is not in contact with the floor or the ground is bent downward to cause buckling. .

The corner rib that extends from the bottom fitting portion toward the corner of the bottom so that the corner of the bottom that is not in contact with the floor or the ground as described above is bent downward and does not buckle. Patent Document 1 discloses a folding container in which a corner overhanging portion is formed.

In addition, an appropriate number of folding containers assembled in a box shape are placed on a pallet, and further, a pallet is placed on a folding container assembled in a box shape placed on the pallet. However, when the pallet has a leg portion as disclosed in Patent Document 2, the leg portion is placed on the side wall of the folding container assembled in the box shape located below. Become.

JP 2001-130550 A Japanese Patent Laid-Open No. 11-236040

In the conventional folding container described above, when a load is applied to the corner of the folding container from above, the bottom corner can be prevented from bending downward or buckling. When a load is applied to the side walls other than the corners from above, there is a problem that the bottom and side walls are deformed or buckled.

In addition, as described above, when the pallet leg is placed on the side wall of the folding container assembled in the box shape located below, the bottom or side wall is deformed or buckled. was there.

An object of the present invention is to solve the problems of the above-described conventional folding container.

A bottom fitting portion on the back surface of the bottom plate, a bottom portion in which corner protruding portions are formed in four corner regions of the bottom fitting portion, and a side wall disposed so as to surround the bottom portion; In the folding container that can be folded by being tilted so as to overlap the bottom portion, the peripheral frame is formed at the corner formed by the peripheral frame of the bottom fitting portion and the bottom plate constituting the bottom portion. The mounting ribs that are substantially perpendicular to the straight portion are formed at predetermined intervals, and the tips of the mounting ribs reach the outer wall portion that constitutes the substantially inverted U-shaped bank portion of the bottom portion. And the lower end of the mounting rib is formed so as to be flush with the back surface of the bottom fitting portion, and the mounting rib is a substantially inverted U-shaped bank portion of the bottom portion. Is formed integrally with a partition wall that partitions the internal space of the In the inner corner, by forming a mounting rib fitting recess into which the mounting rib is fitted, so as to form a remaining portion of a predetermined width on the upper surface of the upper end flange of the side wall, A frame-like flat portion is formed on the upper surface of the upper end flange of the side wall .

Since a suitable number of mounting ribs are formed at the corner formed by the peripheral frame and the bottom plate of the bottom fitting portion, and the back surface of the bottom fitting portion and the lower end of the mounting rib are formed flush with each other, Even if a load is applied from above on the side wall assembled in the bank part or box shape at the bottom of the folding container, the mounting ribs in contact with the floor surface or the ground can bear the load. It is possible to prevent the bottom portion from bending downward and causing buckling.

A predetermined gap is formed between the top end of the mounting rib and the outer wall portion of the bank portion formed at the bottom, and a remaining portion having a predetermined width is formed on the upper inner corner of the side wall and on the upper surface of the upper end flange of the side wall. Since a substantially continuous frame-like flat part is formed on the upper surface of the side wall in a state assembled in a box shape by forming the mounting rib fitting recess so that the part is formed, When a folding container assembled in a box shape is stacked on a folding container assembled in a box shape, or when a pallet is placed in a folding container assembled in a box shape, the box shape located below Since the load is uniformly borne by the frame-like flat part of the side wall of the folding container assembled in the above, it is possible to prevent the side wall from being bent and buckling.

Since the mounting rib is formed integrally with the partition wall that partitions the internal space of the bank formed at the bottom, the strength and rigidity of the mounting rib can be increased.

Since the corner overhanging part is formed in the corner area of the bottom fitting part, the corner overhanging part that is in contact with the floor or the ground is applied to the corner of the folding container even when a load is applied from above. It is possible to prevent the buckling from being caused by burdening the load and, therefore, the bottom corner being bent downward. In addition, since the back surface of the corner overhanging portion is formed in a planar shape having a predetermined area, the folding container is mounted on the floor or the like in a stable state as compared with the one formed as an elongated bottom corner rib. In addition, it is possible to prevent the bottom corner ribs that are weak in strength from being damaged.

Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

Reference numeral 1 denotes a bottom portion having a rectangular planar shape, and a long side wall 2a is hinged to an opposite long side bank portion 1a of the bottom portion 1 via an appropriate hinge member. Similarly, the short side wall portion 1b is hinged to the short side wall 3 via a hinge member. In this embodiment, the long side bank portion 1 a is configured to be higher than the short side bank portion 1 b, and the hinge connection portion between the bottom portion 1 and the long side wall 2 is the hinge connection between the bottom portion 1 and the short side wall 3. It is higher than the part.

As shown in FIG. 1, in order to fold a folding container assembled in a box shape, first, the short side wall 3 is brought down inside the folding container, as shown in FIG. , Over the bottom 1. Then, similarly, the long side wall 2 is brought down inside the folding container and is superimposed on the bottom 1 and the short side wall 3 as shown in FIG. Conversely, in order to assemble the folded state shown in FIG. 3 as shown in FIG. 1, the long side wall 2 overlaid on the bottom 1 and the short side wall 3 is made substantially vertical. Then, the short side wall 3 is erected substantially vertically, and the folding container is assembled into a box shape.

Next, the bottom part 1 is demonstrated using FIG.5 and FIG.6.

The long side bank portion 1a and the short side bank portion 1b of the bottom portion 1 have a substantially inverted U-shaped cross section perpendicular to the longitudinal direction, and the internal space A1 of the long side bank portion 1a. The partition wall 1a1 that divides the internal space A1 is formed with an appropriate number substantially perpendicular to the length direction of the long side bank portion 1a. Similarly, in the internal space A2 of the short side bank portion 1b, an appropriate number of partition walls 1b1 that define the internal space A2 are formed substantially perpendicularly to the length direction of the short side bank portion 1b. ing.

A plurality of ribs 1d1 that are substantially parallel to the long side bank portion 1a and a plurality of ribs 1d2 that are substantially parallel to the short side bank portion 1b and intersect with the rib 1d1 are suspended from the back surface of the bottom plate 1c. A bottom fitting portion 1d is formed by surrounding the ribs 1d1 and 1d2 with a peripheral frame 1d3.

In the four corner regions of the bottom fitting portion 1d, in other words, in the corner region in the vicinity of the four corner portions 1e of the bottom portion 1, a corner overhang portion 1f extending in the direction of the corner portion 1e of the bottom portion 1 is provided. It is formed, and the back surface of the bottom fitting portion 1d and the back surface of the corner protruding portion 1f are formed flush with each other.

The corner overhang portion 1f has a long side wall portion 1f1 parallel to the long side bank portion 1a and a short side wall portion 1f2 parallel to the short side bank portion 1b, and the long side wall portion. 1f1 is connected to the peripheral frame 1d3 located on the long side bank portion 1a side through an inclined portion 1f3 extending in the direction of the peripheral frame 1d3 forming the bottom fitting portion 1d. Similarly, the short side The side wall 1f2 is connected to the peripheral frame 1d3 located on the short side bank portion 1b side through an inclined portion 1f4 extending in the direction of the peripheral frame 1d3 forming the bottom fitting portion 1d. In addition, the rib 1d1 and the rib 1d2 described above are also formed in a space surrounded by the long side wall portion 1f1, the short side wall portion 1f2, and the inclined portions 1f3 and 1f4.

A corner block 1g having a substantially L-shaped planar shape is formed at both ends of the long side bank portion 1a of the bottom portion 1, and an inner step portion 1g1 is formed in the corner block 1g. When the folded containers in the folded state are stacked, the corner overhanging portion 1f of the bottom fitting portion 1d of the folding container located above is formed on the bottom 1 of the folding container located below. It is configured to be fitted to the inner step 1g1 of the corner block 1g.

An engaging recess 3b extending in the vertical direction is formed in the upper corner of the outer wall surface 3a of the short side wall 3 (the surface located outside when the folding container is assembled in a box shape). A plurality of fitting projections 3b1 are formed in the engaging recess 3b. In addition, a horizontally long end fitting recess 3d is formed in the upper corner area of the inner wall surface 3c of the short side wall 3 (the surface located inside when the folding container is assembled in a box shape). The end fitting recess 3d is formed by a bottom surface 3d1, an inclined surface 3d2 formed on the center side of the short side wall 3, and a back wall 3d3. The end fitting recess 3d is open at the top, the inside, and the end opposite to the inclined surface 3d2.

An engaging frame 2a extending in the direction of the short side wall 3 is formed from the upper part of the vertical end of the long side wall 2. The engaging frame 2a projects from the engaging recess 3b of the short side wall 3 described above. A through hole 2a1 into which the fitting protrusion 3b1 can be fitted is formed. Further, the engagement frame 2a formed at the upper part of the vertical end of the long side wall 2 is formed in the engagement recess 3b formed in the upper corner region of the short side wall 3 when the folding container is assembled in a box shape. The fitting protrusion 3b1 projecting from the engaging recess 3b of the short side wall 3 is inserted into the through hole 2a1 formed in the engaging frame 2a of the long side wall 2, and the folding container is assembled into a box shape. In this case, the short side wall 3 erected substantially vertically is configured so as not to easily fall in the direction of the bottom 1.

In addition, in the upper corner region of the inner wall surface of the long side wall 2 on the side of the engagement frame 2a (the surface located on the inner side when the folding container is assembled in a box shape) 2b, a horizontally long end fitting recess 2c is formed, and the end fitting recess 2c is formed by a bottom surface 2c1, an inclined surface 2c2 formed on the center side of the long side wall 2, a back wall 2c3, and an inner wall surface 2a2 of the engaging frame 2a. It is formed and the top and inside are open.

When the folding container is assembled in a box shape, the horizontally long end fitting recess 3d formed in the upper corner region of the inner wall surface 3c of the short side wall 3 and the side of the long side wall 2 on the engagement frame 2a side Due to the horizontally long end fitting recess 2c formed in the upper corner area of the inner wall surface 2b, the inner corner of the folding container assembled in a box shape has a substantially L-shaped corner extension. An exit fitting recess 4 is formed.

When folding containers assembled in a box shape are stacked in the vertical direction, the corner overhanging portion 1f of the bottom fitting portion 1d of the bottom portion 1 of the folding container located above is the folding container located below. A horizontally long end fitting recess 3d formed in the upper corner region of the inner wall surface 3c of the short side wall 3 and a horizontally long shape formed in the upper corner region of the inner wall surface 2b of the long side wall 2 on the engagement frame 2a side. A peripheral frame positioned on the long side bank portion 1a side of the bottom portion 1 of the folding container positioned on the upper side while being fitted in the corner protruding portion fitting recess 4 formed by the end fitting recess 2c. The straight portion 1d4 of 1d3 is close to and faces the inner wall surface 2b of the long side wall 2 of the folding container located below, and is similarly located on the short side bank portion 1b side of the bottom 1 of the folding container located above. The straight part 1d5 of the peripheral frame 1d3 The back surface of the bottom plate 1c of the bottom portion 1 positioned close to and opposed to the inner wall surface 3c of the short side wall 3 of the folding container located below and further around the bottom fitting portion 1d of the folding container located above is The folding container is placed on the upper surface of the upper end flange 2d of the long side wall 2 and the upper surface of the upper end flange 3e of the short side wall 3 of the folding container. Therefore, the folding containers assembled in a box shape can be stacked in a stable state.

Further, when the folding container is placed on the floor or the ground, the bottom fitting part 1d formed on the bottom part 1 and the corner protrusions formed on the four corner regions of the bottom fitting part 1d are provided. Since the portion 1f is configured to come into contact with the floor surface or the ground, even if a load is applied to the corner portion of the folding container from above, the corner protruding portion 1f that is in contact with the floor surface or the ground is provided. Therefore, it is possible to prevent the corner portion of the bottom portion 1 from being bent downward and buckling. In addition, unlike the elongated bottom corner rib disclosed in Japanese Patent Laid-Open No. 2001-130550 described above, the back surface of the corner protruding portion 1f is formed in a planar shape having a predetermined area. Compared to those formed as corner ribs, it is possible to reliably prevent the folding corner of the folding container from being placed on the floor or the like and damaging the bottom corner ribs that are weak in strength.

Further, when the folded containers in the folded state are stacked, the corner overhanging portion 1f of the bottom fitting portion 1d of the folding container positioned above is formed on the bottom 1 of the folding container positioned below. Since it is configured to be fitted to the inner step portion 1g1 of the corner block 1g thus formed, the horizontal movement of the folded container in the folded state is also limited, and the folded container in the folded state is Can be stacked in a stable state.

At the corner formed by the straight portion 1d4 and the bottom plate 1c of the peripheral frame 1d3 located on the long side bank portion 1a side, the long side mounting rib 5 that is substantially perpendicular to the straight portion 1d4 of the peripheral frame 1d3. Are formed at predetermined intervals, and the long side mounting ribs 5 extend in the direction of the long side bank portion 1a, but the tip 5a of the long side mounting ribs 5 has a long side. The outer wall portion 1a2 of the bank portion 1a is not reached, and a predetermined gap is formed between the tip 5a of the long side mounting rib 5 and the outer wall portion 1a2 of the long side bank portion 1a. Moreover, the lower end 5b of the long side mounting rib 5 is formed flush with the back surface of the bottom fitting portion 1d. Furthermore, it is preferable that the long side mounting rib 5 is formed integrally with the partition wall 1a1 that partitions the internal space A1 of the long side bank portion 1a. Thus, the strength and rigidity of the long side mounting rib 5 can be increased by integrally forming the long side mounting rib 5 and the partition wall 1a1. In addition, when the vertical rib is formed in the outer surface of the long side wall 2 (a surface located outside when the folding container is assembled into a box shape), the vertical rib is attached to the long side mounting rib 5 or In other words, it is preferable that the vertical rib, the long side mounting rib 5 and the partition wall 1a1 are arranged so as to coincide with the partition wall 1a1 in the vertical direction.

Similarly, the corner formed by the straight part 1d5 and the bottom plate 1c of the peripheral frame 1d3 located on the short side bank 1b side is mounted on the short side substantially perpendicular to the straight part 1d5 of the peripheral frame 1d3. The mounting ribs 6 are formed at a predetermined interval, and the short side mounting rib 6 extends in the direction of the short side bank portion 1b, but the tip 6a of the short side mounting rib 6 is A predetermined gap is formed between the tip 6a of the short side mounting rib 6 and the outer wall 1b2 of the short side bank 1b without reaching the outer wall 1b2 of the short side bank 1b. Yes. Moreover, the lower end 6b of the short side mounting rib 6 is formed flush with the back surface of the bottom fitting portion 1d. Furthermore, it is preferable that the short side mounting rib 6 is formed integrally with a partition wall 1b1 that partitions the internal space A2 of the short side bank portion 1b. Thus, the strength and rigidity of the short side mounting rib 6 can be increased by integrally forming the short side mounting rib 6 and the partition wall 1b1. In addition, when a vertical rib is formed on the outer surface of the short side wall 3 (a surface located outside when the folding container is assembled into a box shape), the vertical rib is connected to the short side mounting rib 6 or In other words, it is preferable that the vertical rib, the short-side mounting rib 6 and the partition wall 1b1 are arranged so as to coincide with the partition wall 1b1 in the vertical direction.

As described above, since the long side mounting ribs 5 are formed along the long side bank portion 1a of the bottom portion 1, when the folding container is mounted on the floor surface or the ground, it is formed on the bottom portion 1. Since the bottom fitting portion 1d and the long side mounting rib 5 are configured to come into contact with the floor surface or the ground, the long side bank portion 1a of the folding container or the length of the state assembled in a box shape is used. Even if a load is applied to the side wall 2 from above, the long-side mounting rib 5 that is in contact with the floor surface or the ground bears the load, and therefore the long-side bank portion 1a is bent downward and buckled. Can be prevented.

Similarly, since the short-side mounting rib 6 is formed along the short-side bank portion 1b of the bottom 1, when the folding container is mounted on the floor surface or the ground, the bottom formed on the bottom 1 is formed. Since the fitting part 1d and the short side mounting rib 6 are configured to contact the floor surface or the ground, the short side wall part 1b of the folding container or the short side wall 3 assembled in a box shape is used. Even if a load is applied from above, the short side mounting rib 6 abutting against the floor surface or the ground bears the load, and accordingly, the short side bank portion 1b bends downward to cause buckling. This can be prevented.

Next, when the folding containers assembled in a box shape are stacked, the long side mounting ribs 5 and the short side mounting ribs 6 formed on the bottom portion 1 of the folding container positioned above are inserted. The configuration will be described.

A mounting rib fitting recess 7 is formed at an appropriate portion of the upper inner corner of the long side wall 2, and the mounting rib fitting recess 7 includes a bottom surface 7 a, an opposite side surface 7 b, and a back surface. It is formed by the wall 7c, and the upper part and the inner side are open. The depth of the mounting rib fitting recess 7 (the distance from the upper surface of the upper end flange 2d of the long side wall 2 to the bottom surface 7a of the mounting rib fitting recess 7) is the height of the long side mounting rib 5 ( The distance from the lower end 5b of the long side mounting rib 5 to the back surface of the bottom plate 1c), or slightly shallower or deeper than the height of the long side mounting rib 5. When the folding containers assembled in a box shape are stacked, the long side mounting ribs 5 formed on the bottom portion 1 of the folding container located on the upper side are placed on the long side wall 2 of the folding container located below. It is configured to be inserted into the formed mounting rib fitting recess 7. In this embodiment, three mounting rib fitting recesses 7 are formed, and two long side mounting ribs 5 are inserted into each mounting rib fitting recess 7. However, the number of the mounting rib fitting recesses 7 and the number of the long side mounting ribs 5 inserted into the mounting rib fitting recesses 7 are limited to the present embodiment. It is not something.

Similarly, a mounting rib fitting recess 8 is formed at an appropriate portion of the upper inner corner of the short side wall 3, and the mounting rib fitting recess 8 has a bottom surface 8a and an opposite side surface 8b. And the back wall 8c, the upper part and the inner side are open. The depth of the mounting rib fitting recess 8 (the distance from the upper surface of the upper end flange 3e of the short side wall 3 to the bottom surface 8a of the mounting rib fitting recess 8) is the height of the mounting rib fitting recess 8. It is the same as (distance from the lower end 6b of the short side mounting rib 6 to the back surface of the bottom plate 1c) or slightly shallower or deeper than the height of the short side mounting rib 6. When the folding containers assembled in a box shape are stacked, the short side mounting ribs 6 formed on the bottom portion 1 of the folding container located on the upper side are placed on the short side wall 3 of the folding container located below. It is configured to be inserted into the formed mounting rib fitting recess 8. In this embodiment, one mounting rib fitting recess 8 is formed, and the two short side mounting ribs 6 are inserted into the mounting rib fitting recess 8. However, the number of the mounting rib fitting recesses 8 and the number of the short side mounting ribs 6 inserted into the mounting rib fitting recesses 8 are limited to the present embodiment. is not.

As described above, the tip 5a of the long side mounting rib 5 does not reach the outer wall 1a2 of the long side bank 1a, and the tip 5a of the long side mounting rib 5 and the long side bank 1a. Since there is a predetermined gap between the outer wall 1a2 and the outer wall 1a2, the mounting rib fitting recess 7 formed in the upper inner corner of the long side wall 2 is connected to the upper end flange 2d of the long side wall 2. Is not formed over the entire width of the upper surface W1 (thickness direction of the long side wall 2) W1, and therefore, on the upper surface of the upper end flange 2d of the long side wall 2 in which the mounting rib fitting recess 7 is formed. Is formed with a remaining portion 2d1 having a predetermined width.

Similarly, the tip 6a of the short side mounting rib 6 does not reach the outer wall 1b2 of the short side bank 1b, and the outer wall of the tip 6a of the short side mounting rib 6 and the short side bank 1b. Since a predetermined gap is formed between the portion 1b2 and the mounting rib fitting recess 8 formed at the upper inner corner of the short side wall 3, the upper surface of the upper end flange 3e of the short side wall 3 is Is not formed over the entire width W2 (thickness direction of the short side wall 3). Therefore, on the upper surface of the upper end flange 3e of the short side wall 3 where the mounting rib fitting recess 8 is formed, A remaining portion 3e1 having a predetermined width is formed.

As described above, the remaining portion 2d1 having a predetermined width is formed on the upper surface of the upper end flange 2d of the long side wall 2 in which the mounting rib fitting recess 7 is formed, and the mounting rib fitting is provided. Since the remaining portion 3e1 having a predetermined width is also formed on the upper surface of the upper end flange 3e of the short side wall 3 in which the recess 8 is formed, the upper end flange of the long side wall 2 is thus assembled in a box shape. On the upper surface of 2d, there is no concave groove or notch extending over the entire width of the width W1, and similarly, the upper surface of the upper end flange 3e of the short side wall 3 extends over the entire width of the width W2. In the state assembled in a box shape, the upper surfaces of the upper end flanges 2d and 3e of the side walls 2 and 3e are arranged on the upper surface of the upper end flange 2d having the remaining portion 2d1 of the long side wall 2 and The upper end flange having the remaining portion 3e1 of the short side wall 3 Consisting of the upper surface of Nji 3e, so that substantially continuous frame-shaped flat portion P is formed.

When folding containers assembled in a box shape are stacked, the back surface of the bottom plate 1c of the bottom 1 positioned around the bottom fitting portion 1d of the folding container positioned above is the length of the folding container positioned below. The upper end flange 2d having the remaining portion 2d1 of the side wall 2 and the upper surface of the upper end flange 3e having the remaining portion 3e1 of the short side wall 3 are placed on a substantially continuous frame-like flat portion P. Therefore, the load of the upper folding container is such that the upper surface of the upper end flange 2d having the remaining portion 2d1 of the long side wall 2 of the lower folding container and the upper surface of the upper end flange 3e having the remaining portion 3e1 of the short side wall 3 Since the frame-shaped flat portion P is uniformly loaded, it is possible to prevent the long side wall 2 and the short side wall 3 from bending and buckling.

In addition, as shown in FIG. 7, an appropriate number of folding containers C assembled in a box shape are placed on the pallet T, and the folding containers C assembled in a box shape placed on the pallet T are placed in the folding container C. Furthermore, the pallets T on which the folding containers C assembled in a box shape are placed are stacked, but the folding containers C assembled in a box shape on which the pallets T are placed are As described above, the load is evenly distributed by the frame-shaped flat portion P including the upper surface of the upper end flange 2d having the remaining portion 2d1 of the long side wall 2 and the upper surface of the upper end flange 3e having the remaining portion 3e1 of the short side wall 3. Since it is burdened, the long side wall 2 and the short side wall 3 of the folding container C assembled in a box shape on which the pallet T is placed can be prevented from bending and buckling. That.

In the embodiment described above, an example in which the corner portion overhanging portion 1f, the long side mounting rib 5 and the short side mounting rib 6 are formed on the bottom 1 is shown in FIG. As shown, the corner overhang 1f can be omitted. In this case, by forming several long side mounting ribs 5 and short side mounting ribs 6 close to the four corners of the bottom fitting portion 1d whose back surface shape is rectangular, When the folding container is placed on the floor surface or the ground, the long side mounting ribs 5 and the short side mounting ribs 6 formed near the corners come into contact with the floor surface or the ground. Even if a load is applied to the corner of the container from above, the load is borne by the long side mounting rib 5 and the short side mounting rib 6 that are in contact with the floor or the ground, and the corner of the bottom 1 Can be prevented from bending downward and buckling. FIG. 8 shows an example in which the short side mounting ribs 6 are added near both ends of the short side bank portion 1b. As shown in FIG. 9, a mounting rib fitting recess 8 is added to the upper inner corner of the short side wall 3.

Moreover, the long side mounting rib 5 and the short side mounting rib 6 can be formed as plate-shaped ribs, or can be formed as block-shaped ribs having a wide width.

FIG. 1 is a perspective view of the folding container of the present invention in a state of being assembled into a box shape. FIG. 2 is a perspective view of the folding container shown in FIG. 1 during assembly or folding. FIG. 3 is a perspective view of a state in which the folding container shown in FIG. 1 is folded. FIG. 4 is a plan view of the folding container assembled in the box shape shown in FIG. FIG. 5 is a rear perspective view of the bottom of the folding container shown in FIG. 6 is a partially enlarged back perspective view of the bottom of the folding container shown in FIG. FIG. 7 is a front view of a state in which pallets on which folding containers assembled in the box shape shown in FIG. 1 are placed are stacked. FIG. 8 is a rear perspective view of the bottom of a folding container according to another embodiment of the present invention. FIG. 9 is a perspective view showing a state in which the folding container having the bottom shown in FIG. 8 is assembled into a box shape.

Explanation of symbols

A1, A2 ··········· Internal space P ········································································· Bottom ..Long side bank part 1b ......... Short side bank part 1f ......... Corner overhang part 2 ...・ Long side wall 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short side wall 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Fitting recess 5 for corner overhanging part ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・Long-side mounting rib 6 ······· Short-side mounting rib 7, 8, ··················································· Fitting recess for mounting rib

Claims (1)

A bottom fitting portion on the back surface of the bottom plate, a bottom portion in which corner protruding portions are formed in four corner regions of the bottom fitting portion, and a side wall disposed so as to surround the bottom portion; In the folding container that can be folded by being tilted so as to overlap the bottom portion, the peripheral frame is formed at the corner formed by the peripheral frame of the bottom fitting portion and the bottom plate constituting the bottom portion. The mounting ribs that are substantially perpendicular to the straight portion are formed at predetermined intervals, and the tips of the mounting ribs reach the outer wall portion that constitutes the substantially inverted U-shaped bank portion of the bottom portion. And the lower end of the mounting rib is formed so as to be flush with the back surface of the bottom fitting portion, and the mounting rib is a substantially inverted U-shaped bank portion of the bottom portion. Is formed integrally with a partition wall that partitions the internal space of the In the inner corner, by forming a mounting rib fitting recess into which the mounting rib is fitted, so as to form a remaining portion of a predetermined width on the upper surface of the upper end flange of the side wall, A folding container characterized in that a frame-like flat portion is formed on the upper surface of the upper end flange of the side wall .

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