JP2002154538A - Folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding container which can be stacked in a stably fitted condition with no sliding when a folding container which is smaller than or identical to the folding container positioned underneath is placed on the container underneath in a folded condition. SOLUTION: This relates to a folding container whose side walls 2, 3 provided surrounding a bottom 1 are folded superimposed on the bottom. On the corner of bottom bank parts 1a, 1b, an end fitting block 4 formed with a notch stage part 4a is provided. On the center of one set of facing banks 1a, an intermediate block 5 formed with a notch stage 5c, a catching projection 5b, and a fitting projection 5a on top is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container which can be folded so that a side wall disposed so as to surround a bottom portion overlaps the bottom portion.

[0002]

2. Description of the Related Art Conventionally, a long side wall connected via a hinge member to a bank portion located on the opposite long side of a bottom portion having a substantially rectangular planar shape, and a short side portion on the opposite short side of the bottom portion. 2. Description of the Related Art A folding container is known which is located and has a short side wall connected via a hinge member to a bank portion higher than a bank portion connected to the long side wall. And
From the state of being assembled in a box shape, first, the long side wall connected to the bank portion located on the long side opposite to the bottom,
Fold so as to overlap on the bottom, and then connect the short side wall connected to the bank higher than the bank connected to the long side,
By folding the container so as to overlap on the long side wall, the folding container is folded, and from the folded state, first, the short side wall is set up almost vertically, and then the long side wall is set up almost vertically, and then folded. The container is configured to be assembled in a box shape.

[0003]

When the above-mentioned conventional folding container is folded or assembled in a box shape, and stacked, it is assembled in a folded state or a box shape located above. There is a problem that the folded containers moved in the horizontal direction and a large number of folded containers cannot be stacked in a stable state. Also, when stacking small folding containers on top of large folding containers,
The same problem as above occurs.

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

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a folding container in which a side wall disposed so as to surround a bottom can be folded so as to overlap the bottom. At the corner of the bottom bank portion, an end engaging block formed with a notch step is provided, and at the center of one of the opposing banks, a notch step and An intermediate block having a locking projection formed thereon and having a fitting projection projecting from the upper surface is provided. Secondly, an inner corner at the upper end of one of the side walls facing each other. In addition to forming a notch step,
A locking projection is formed at the center of the notch step.

[0006]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it departs from the gist of the present invention.

Reference numeral 1 denotes a bottom portion having a substantially rectangular planar shape.
(Hereinafter, this bank portion is simply referred to as a long side bank portion.)
A bank 1b (hereinafter, this bank is simply referred to as a short side bank) is also formed on the opposite short side of the bottom 1, and a long side bank is formed. The height of the portion 1a is formed lower than the height of the short side bank portion 1b. The long side wall 1a is provided with a long side wall 2 via a suitable hinge member H, and the short side bank 1b is also provided with a suitable hinge member H via a suitable hinge member H. Short side walls 3 are provided.

[0008] At the corner of the bottom 1 is formed an end engaging block 4 extending upward beyond the upper surfaces of the long side bank 1a and the short side bank 1b. Joint block 4
A notch step 4a is formed at the upper inside corner of the notch. The end engaging block 4 includes a portion along the long side bank 1a and a portion longer than this along the short side bank 1b, and has a substantially L-shaped planar shape. I have.

At the center of the long side bank 1a of the bottom 1
An intermediate engagement block 5 is formed, and the upper surface of the intermediate engagement block 5 is formed at the same height as the upper surface of the end engagement block 4 described above. A pair of fitting projections 5a project from the upper surface of the intermediate engagement block 5 at a predetermined interval, and the upper inner corner of the intermediate engagement block 5 has a central portion. A notch step 5c similar to the notch step 4a formed in the end engaging block 4 described above is formed except for the locking projection 5b.

As shown in FIGS. 1 to 3, when the long side wall 2 is set up substantially perpendicularly to the bottom 1 as shown in FIGS. At the center of the lower end of the long side wall 2, a recess 2 a
Are formed, and the long side wall 2 is also
When set up substantially perpendicular to the lower end of the long side wall 2,
Notches 2b are formed at the lower end corners of the long side wall 2 at both end corners so as not to come into contact with the end engaging blocks 4 located on the long side bank 1a side. Similarly, when the short side wall 3 is set up substantially perpendicularly to the bottom 1, the lower end of the short side wall 3 is connected to the end engaging block 4 located on the short side bank 1 b side.
So that it does not come into contact with
A notch 3a is formed.

At the center of the upper surface 2c of the long side wall 2, the same as a pair of fitting projections 5a protruding from the intermediate engagement block 5 formed on the long side bank 1a of the bottom 1 described above. A pair of fitting projections 6a are formed at predetermined intervals. A notch step 2d is formed at an inner corner at the upper end of the long side wall 2, and a notch step located at the center of the fitting projection 6a formed on the upper surface 2c of the long side wall 2. 2d
Is formed with a locking projection 7. Locking overhang 7
Is formed by not forming the cutout step 2d at the center of the inner corner at the upper end of the long side wall 2.
Similarly, a notch step 3b is also formed at the inner corner at the upper end of the short side wall 3.

L1 is a short side wall locking member formed in the upper part of both side ends of the short side wall 3 and extending inwardly substantially perpendicularly to the short side wall 3, and L2 is It is a long side wall side locking member formed at both upper end portions of the outer wall surface of the long side wall 2. When the folding container C1 is assembled in a box shape, a short side wall locking member L1 formed on the short side wall 3 and a long side wall locking member L2 formed on the long side wall 2 are formed.
Are engaged so that the long side wall 2 does not easily fall inward. Such a short side wall locking member L
Since various configurations are known for 1 and the long side wall side locking member L2, detailed description is omitted.

As shown in FIG. 4 which is a rear perspective view of the folding container C1, the long side bank 1 of the bottom 1 is shown.
On the back surface of a, a concave groove 1a1 whose lower side is opened is formed. In the concave groove 1a1, partition ribs perpendicular to the longitudinal direction of the long side bank 1a are formed at predetermined intervals, and a pair of adjacent partition ribs 1a2 located at the center of the long side bank 1a. Accordingly, a fitting concave portion 1a3 is formed at the center of the concave groove 1a1. Similarly, a concave groove 1b1 whose lower part is opened is also formed on the back surface of the short side bank part 1b of the bottom part 1. Partition ribs 1b2 perpendicular to the longitudinal direction of the short side bank 1b are also formed at predetermined intervals in the concave groove 1b1.

Reference numeral 8 denotes a groove formed on the back surface of the bottom portion 1 of the folding container C1, and formed on the back surface of the long side bank portion 1a and the back surface of the short side bank portion 1b. The bottom fitting portion is formed in a region surrounded by 1b1 and is formed so as to protrude downward from the lower surfaces of the long side bank portion 1a and the short side bank portion 1b. A concave groove 8b is formed in a central region of the bottom fitting portion 8 parallel to the short side 8a. As shown in FIG. 5, the short side wall 20 has the same width as the short side wall 3 of the above-mentioned folding container C1, and has a width approximately half the width of the long side wall 2 of the folding container C1. The folding container C2 having the side wall 30 (hereinafter referred to as a １ ／ folding container for the sake of convenience with respect to the above-described folding container C1) is moved so that the long side wall 20 abuts.
When the folding containers C1 are stacked on top of each other, the long side walls 20 are arranged so as to be in contact with each other.
The upper end of the long side wall 20 of each of the half-folded containers C2 is configured to be inserted into the above-mentioned concave groove 8b. In the present embodiment, the bottom fitting portion 8 is formed by an outer peripheral frame 8c and cross ribs 8c 'formed in the outer peripheral frame 8c and running vertically and horizontally.

From the state in which the folding container C1 having the above-described configuration is assembled in the box shape shown in FIG. 1, first, the long side wall 2 in a substantially vertical state is turned inward, and FIG. As shown, overlay on bottom 1,
Next, the short side wall 3 in a substantially vertical state is turned inward, and is stacked on the long side wall 2 stacked on the bottom 1,
The folding container C1 assembled in a box shape is shown in FIG.
Can be folded as shown in FIG. Also,
From the folded state shown in FIG. 3, the short side wall 3 in a substantially horizontal state is erected substantially vertically, and then the long side wall 2 in a substantially horizontal state is erected substantially vertically, whereby the folded state is obtained. The folding container C1 is configured to be assembled in a box shape.

As shown in FIG. 6, when the assembled folding containers are stacked one on another,
The fitting projection 6a protruding from the center of the upper surface 2c of the long side wall 2 of the lower folding container C1b is provided with the long side bank 1 of the bottom 1 of the upper folding container C1u.
a is inserted into the fitting concave portion 1a3 located at the center of the concave groove 1a1 formed on the back surface, and the locking protrusion located between the fitting convex portions 6a of the long side wall 2 of the folding container C1b located below. The portion 7 is configured to be inserted into a concave groove 8b formed in the bottom fitting portion 8 of the folding container C1u located above. Further, the bottom fitting portion 8 of the upper folding container C1u is provided with the notch step 2d formed at the upper inner corner of the long side wall 2 of the lower folding container C1b and the upper inner corner of the short side wall 3. The long sides 1a and the short sides 1b of the upper folding container C1u are fitted into the cutout steps 3b formed in the lower part of the folding container C1b. It is configured to be placed on the upper surface 2c of the long side wall 2 and the upper surface 3c of the short side wall 3.

Further, as shown in FIG. 7, when the folded containers C1 in a folded state as shown in FIG. 3 are stacked, as shown in FIG. Bottom fitting part 8 of folding container C1u
Are the notch step 4a of the end engaging block 4 and the notch step 5 of the intermediate engaging block 5 formed on the bottom 1 of the folded folding container C1b located below.
c, and the intermediate engagement block 5 formed on the bottom 1 of the folded container C1b in the lower position is a long side of the bottom 1 of the folded container C1u in the upper position. Fitting recess 1 located at the center of groove 1a1 formed on the back surface of side bank 1a
a3, and the locking projection 5b of the intermediate engagement block 5 is inserted into the concave groove 8b formed in the bottom fitting portion 8 of the folded folding container C1u located above. It is configured as follows. Then, the back surface of the long side bank portion 1a and the short side bank portion 1b of the folded container C1u in the upper folded state is formed on the bottom 1 of the folded container C1b in the lower folded position. Partial engagement block 4 and intermediate engagement block 5
It is configured to be placed on the upper surface of the.

As shown in FIG. 5, the half-folding container C2 is also the same as the folding container C1 described above.
Similarly, the bottom 10 and the long side bank 10a of the bottom 10
A long side wall 20 hinged to the bottom portion 10 and a short side wall 30 hinged to the short side bank portion 10 b of the bottom portion 10. By overlaying the short side wall 30 over the long side wall 20 overlying the bottom 10. It is configured to be folded.

As shown in FIG. 8, which is a rear perspective view of the half-folded container C2, the bottom 10 of the half-folded container C2 also has a concave groove 8b and an intermediate engaging block 5. Except for the above, it has the same configuration as the bottom 1 of the folding container C1 described above. That is, on the back surface of the long side bank portion 10a of the bottom portion 10, a concave groove 10a1 whose lower side is opened is formed, and the concave groove 10a is formed.
1, partition ribs 10a2 perpendicular to the longitudinal direction of the long-side bank portion 10a are formed at predetermined intervals. Similarly, on the back surface of the short side bank portion 10b of the bottom portion 10, a concave groove 10b1 whose lower side is opened is formed.
Also at b1, partition ribs 10b2 perpendicular to the longitudinal direction of the short side bank portion 10b are formed at predetermined intervals. Also,
End fitting recesses 10a3 are formed at both ends of the concave groove 10a1 formed on the back surface of the long side bank portion 10a of the bottom portion 10, and similarly formed on the back surface of the short side bank portion 10b. End fitting concave portions 10b3 are also formed at both ends of the concave groove 10b1. Further, a bottom fitting portion 80 is formed in a region surrounded by the concave groove 10a1 formed on the back surface of the long side bank portion 10a and the concave groove 10b1 formed on the back surface of the short side bank portion 10b. The bottom fitting portion 80 is formed to protrude downward from the lower surfaces of the long side bank 10a and the short side bank 10b. In addition, the bottom fitting part 8 also
Similarly to the above-described bottom fitting portion 8 of the folding container C1, it is formed by an outer peripheral frame 80a, and cross ribs 80b formed in the outer peripheral frame 80a and running vertically and horizontally.

Next, the stacking of the 1/2 folded container C2 on the assembled folded container C1 located below will be described mainly with reference to FIG. FIG. 9 shows the half-fold container C2 assembled in a box shape.

After placing one long side wall 20 of the half-folded container C2 above one short side wall 3 of the assembled folded container C1 located below, the half-folded part is folded in half. When the container C2 is lowered, one long side wall 20 of the above-mentioned half-folded container C2 is placed on one short side wall 3 of the assembled folded container C1 located below, and
The opposite short side wall 30 of the / 2 folding container C2 is
It will be placed on substantially half of the opposing long side walls 2 of the assembled folding container C1 located below. At this time, the 1/2 folding container C
The bottom fitting portion 80 formed on the bottom 10 of the second container 2 is formed at a notch step 2d formed at the upper inner corner of the long side wall 2 of the folding container C1 located below and the upper inner corner of the short side wall 3. Fitted into the formed notch step 3b,
The back surfaces of the long side bank portion 10a and the short side bank portion 10b of the 1/2 folding container C2 located on the upper side are on the upper surface 2c of the long side wall 2 and the upper surface 3c of the short side wall 3 of the folding container C1 located below. Will be placed. Furthermore, the upper surface 2 of the long side wall 2 of the folding container C1 located below
c, the short side wall 3 on which the long side wall 20 of the half-fold container C2 is placed.
Of the end fitting concave portion 10b3 formed on the back surface of the short side bank portion 10b of the コ ン テ ナ ー folding container C2 located on the upper side. Is inserted into the end fitting recess 10b3 located near the center of the long side wall 2.

As described above, when the 1/2 folded container C2 is stacked on the folded container C1 in the assembled state located below, the 1 / fold folded container C2 located above is folded.
The fitting protrusion 6a formed on the upper surface 2c of the long side wall 2 of the folding container C1 located below is inserted into the end fitting recess 10b3 formed on the back surface of the short side bank 10b of the folding container C2. It is configured to
The lateral movement of the upper half-fold container C2 along the long side wall 2 of the lower assembled folded container C1 in the assembled state will be limited, and therefore stable. , 1/2 folding containers C2 can be stacked. Also, one half
Even if only the foldable container C2 is stacked on the underlying foldable container C1, the ２ foldable container C2 can be moved laterally along the long side wall 2 of the underlying assembled folded container C1. Can be prevented from sliding. Furthermore, the stacked half-fold container C2 positioned above and the lower folded container C positioned in the assembled state
When the user tries to move along the long side wall 2 in the lateral direction, the half-fold container C2
A side surface 80c located on the long side bank portion 10a side of the bottom fitting portion 80 has a notch step formed in the inner corner at the upper end of the long side wall 2 of the assembled folding container C1 located below. Locking overhanging portion 7 located at the center of portion 2d
, The movement of the 折 り folding container C2 is restricted.

FIGS. 10 and 11 show an embodiment in which the pair of fitting projections 6a formed on the upper surface 2c of the long side wall 2 of the folding container C1 are omitted. Thus, by omitting the fitting projection 6a and forming the upper surface 2c of the long side wall 2 of the folding container C1 as a flat surface,
The lower half of the folded container C1 is replaced with the lower half of the folded container C1 by the lower half of the assembled folding container C1.
Can be stacked along the long side wall 2 while sliding. That is, as shown in FIG. 11, the folded container C1 in the assembled state located below
, The upper half-fold container C2
Of the bottom fitting portion 80 (the tip of the bottom fitting portion 80 located near the center of the assembled folding container C1 located below) with the long side wall 2 of the folding container C1 located below. Fits into the notch step 2d formed at the upper inside corner of
The upper surface 2c and the short side wall 3 of the long side wall 2 of the folding container C1 located only below the front of the back side of the long side bank portion 10a and the short side bank portion 10b of the folding container C2.
And the bottom fitting portion 80 of the １ ／ folding container C2 located above is placed on the upper surface 3c of one short side wall 3 of the folding container C1 located below. From this state, the upper folding container C2 is replaced with the lower folding container C1.
When sliding along the long side wall 2 toward the center of the long side wall 2, the half-folded container C2 located on the upper side
A side surface 80c located on the long side bank portion 10a side of the bottom fitting portion 80 has a notch step formed in the inner corner at the upper end of the long side wall 2 of the assembled folding container C1 located below. Locking overhanging portion 7 located at the center of portion 2d
, And further sliding movement is prevented, and the bottom fitting portion 80 of the upper half folding container C2 is located at the upper inner corner of the long side wall 2 of the lower folding container C1. Notch step 2d formed
And a long side bank portion 10a and a short side bank portion 1 which are fitted into a notch step 3b formed at an upper inner corner portion of the short side wall 3 and which are located above the half-fold container C2.
0b is placed on the upper surface 2c of the long side wall 2 and the upper surface 3c of the short side wall 3 of the folding container C1 located below, and the stacking is completed.

As described above, even if the upper half folded container C2 is slid with respect to the assembled folded container C1 located below and is stacked, the lower half of the folded container C1 is surely lowered. In the half area of the positioned folded container C1 located,
The two-fold container C2 can be stacked, and the stacked half-fold container C2 positioned above the lower folded assembly container C1 with respect to the assembled folded container C1 positioned below. When an attempt is made to move laterally along the long side wall 2 of the folded container C1 in the folded state, the upper container 1
The side surface 80c located on the long side bank portion 10a side of the bottom fitting portion 80 of the / 2 folding container C2 is formed at the inner corner at the upper end of the long side wall 2 of the assembled folding container C1 located below. Abuts the locking projection 7 located at the center of the cut-out stepped portion 2d, so that it extends along the long side wall 2 of the assembled folded container C1 located below the 1/2 folded container C2. Lateral movement is restricted, and the half-fold containers C2 can be stacked in a stable state.

As described above, the corner of the bottom 1 is provided with the notch step 4a extending upward beyond the upper surfaces of the long side bank 1a and the short side bank 1b. A notch step 5c and a locking protrusion 5b are formed at the center of the long side bank 1a of the bottom 1 and fitted to the upper surface. Since the intermediate block 5 having the protruding portions 5a is formed, the same folding container C1 is stacked on the lower folding container C1 in the folded state, or
Even when the half-fold containers C2 are stacked, they can be stacked in a stable state without shifting the fitting state.

A notch step 2d is formed at the inner corner at the upper end of the long side wall 2, and a locking projection 7 is formed at the center of the notch step 2d. , The upper half folded container C2 is replaced with the lower folded container C
When sliding along the long side wall 1, during the sliding movement, the side face 80 c located on the long side bank part 10 a side of the bottom fitting part 80 of the 位置 folding container C 2 located on the upper side. , Abuts the locking projection 7 of the assembled folding container C1 located below and prevents further sliding movement, so that the upper half folding container C2 can be reliably moved to the upper position. The lower half of the assembled folded container C1 can be stacked and the stacked upper half folded container C2 can be stacked on the lower half of the assembled folded container C1. The half-folded containers C2 can be stacked in a stable state without moving along the long side wall 2 of the container C1.

[0027]

Since the present invention has the above-described structure, the following effects can be obtained.

At the corner of the bottom bank, an end engaging block having a notch step is provided, and at the center of one opposing bank, a notch step is provided. And the locking projection is formed, and the intermediate block having the fitting projection projecting from the upper surface is provided, so that the same folding container is placed in the folded container located below. Even when stacking, or when stacking small folding containers, the fitting state can be stably stacked without shifting the fitting state.

At the inside corner of the upper end of one of the side walls,
Since a notch step is formed and a locking projection is formed in the center of the notch step,
When the small folding container on the upper side slides along the side wall of the assembled folding container on the lower side, the small folding container on the upper side is locked during the sliding movement. Ensure that the small folding container on top is stacked in half the area of the assembled folding container on the bottom as it abuts the overhang and prevents further sliding movement In addition, the small foldable container placed on top of the stack does not move along the side wall of the assembled foldable container located below, and the small foldable container is stable and small. Containers can be stacked.

[Brief description of the drawings]

FIG. 1 is a perspective view of a folding container according to the present invention.

FIG. 2 is a perspective view of the folding container according to the present invention in the middle of assembly.

FIG. 3 is a perspective view of the folding container according to the present invention in a folded state.

FIG. 4 is a rear perspective view of the folding container of the present invention.

FIG. 5 illustrates the stacking of the folded container of the present invention in the form of a box into the lower half folded container assembled in the form of two boxes. It is a perspective view of a folding container and a 1/2 folding container.

FIG. 6 is a perspective view for explaining the stacking of the folding containers of the present invention assembled in a box shape.

FIG. 7 is a perspective view for explaining the stacking of the folded containers in the folded state according to the present invention.

FIG. 8 is a rear perspective view of the half-fold container.

FIG. 9 is a view showing 1/1 of a state where two boxes are assembled.
It is a perspective view of a folding container and a half folding container for demonstrating the stacking of the two folding containers on the folding container in the state of being assembled in the box shape of the present invention located below.

FIG. 10 shows the steps of a two-fold assembled half-fold container to an underlying folded-box folded container of another embodiment of the present invention; It is a perspective view of a folding container and a half folding container for explaining stacking.

FIG. 11 is a half of a box-shaped assembly.
FIG. 9 is a perspective view of a folding container and a half-folding container for illustrating stacking by sliding movement of the folding container to a folding container in a box-shaped assembled state of another embodiment of the present invention located below. is there.

[Explanation of symbols]

 C1 Foldable container C2 1/2 Foldable container 1 Bottom 2 ··························································· End engagement block ······ Intermediate engagement block 5a ··· Fitting protrusion 5b ··· Locking overhang 6a ··· ..... Mating protrusions

Claims (2)

[Claims] 1. A folding container in which a side wall disposed so as to surround a bottom portion can be folded so as to overlap the bottom portion, wherein a notch step is formed at a corner of a bottom bank portion. An engaging block is provided, and a notch step and a locking projection are formed in the center of one of the opposite bank portions, and a fitting projection is provided on the upper surface. A folding container, wherein an intermediate block is provided. 2. An inner corner of the upper end of one of the side walls,
The folding container according to claim 1, wherein a notch step is formed, and a locking projection is formed at a center of the notch step.