JP2002154537A - Folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding container whose each fitting frame part fits smoothly for improved working efficiency in assembling the same by forming the side wall of the container with an inside inclining member for erecting the side wall to be erected first inclining inside relative to a vertical face for preventing a gap between the fitting frame part formed on the side wall erected later and that formed on the side wall erected first owing to displacement. SOLUTION: This relates to a folding container whose side walls 2, 3 provided surrounding a bottom part 1 are folded superimposed on the bottom part. The side wall 3 to be erected first is provided with an inside inclining member S for erecting the side wall inclining inside relative to a vertical face L.

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 to a long side bank opposite to a bottom formed in a substantially rectangular planar shape, and a short side bank opposite to the bottom similarly. A folding container having a short side wall connected via a hinge portion is known, and the long side wall and the short side wall are set up substantially perpendicular to the bottom, and the folding container is assembled in a box shape. In the state, the long side wall or the short side wall which is set up substantially vertically is engaged with the left and right end portions of the long side wall and the short side wall, thereby forming the inside of the assembled folding container. In addition, it is configured so that it cannot easily fall down.

[0003]

In the conventional folding container, one of the long side wall and the short side wall is provided.
Standing substantially perpendicular to the bottom, and then standing the remaining side walls vertically, when assembling into a box shape, the long side wall or the short side wall that was first raised is inclined more outward than vertical,
When the remaining side walls are set up vertically, there is a problem that the engaging frame portions formed on the left and right ends of the long side wall and the short side wall cannot be engaged with each other, which hinders the assembling work.

[0004] An object of the present invention is to solve the above-mentioned problems of the conventional folding container and improve the workability of assembling the folding container.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly provides a folding container in which a side wall disposed to surround a bottom is folded so as to overlap the bottom. An inner inclined member is provided for erecting a side wall to be inclined inward with respect to a vertical plane.

[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. A long side wall 2 is connected to a long side bank portion 1a opposite to the bottom portion 1 via a hinge portion described later. Short side walls 3 are also connected to opposite short side bank portions 1b via hinges. In this embodiment, the height of the short side bank 1b is higher than the height of the long side bank 1a.

As shown in FIG. 1, in order to fold the folded container assembled in a box shape, first, the long side wall 2 is folded down inside the folded container, and as shown in FIG. Over the bottom 1 as if
Then, similarly, the short side wall 3 is turned inside out of the folding container and overlaps the bottom 1 and the long side wall 2 as shown in FIG. Conversely, to assemble as shown in FIG. 1 from the folded state shown in FIG. 3, the short side wall 3 laid on the bottom portion 1 and the long side wall 2 is set upright. Then, the long side wall 2 is set upright, and the folding container is assembled in a box shape.

Next, the bottom portion 1 will be described mainly with reference to FIG.

On the outer upper surface of the long side bank 1 of the bottom 1,
A predetermined number of outer walls 1a1 extending upward are formed, and a pair of fitting recesses 1c are formed on both sides of the outer wall 1a1 located at the center. A plate-like portion 4a constituting the hinge female portion 4 extends upward on the inner upper surface of the long-side bank portion 1a, and a tip end of the plate-like portion 4a extends in the direction of the outer wall 1a1. An existing hook 4b is formed. In the long side bank 1a, an appropriate number of hinge female portions 4 each including a plate portion 4a and a hook 4b are formed at predetermined intervals (in the present embodiment, three hinge female portions 4 are provided). Are formed.).

An outer wall 1b1 higher than the outer wall 1a1 of the above-described long side bank 1a is formed on the outer upper surface of the short side bank 1b of the bottom 1, and the short side bank 1b is formed.
A suitable number of hinge female portions 4 each including the above-described plate-shaped portion 4a and hooks 4b are formed on the inner upper surface at a predetermined interval (in the present embodiment, four hinge female portions 4 are provided). An example in which is formed is shown.)

A reinforcing block 5 having the same height as the outer wall 1b1 is formed at a corner formed by the outer wall 1b1 formed on the shorter side bank 1b of the bottom 1 and the upper surface of the shorter side bank 1b. And the reinforcing block 5 is connected to the hinge female portion 4.
Is formed at a substantially intermediate position. The outer wall 1a1 and the short side of the long side bank 1a are formed at four corners of the bottom 1 formed by the short side bank 1b of the bottom 1 and the long side bank 1a of the bottom 1. A corner locking block 6 extending upward beyond the outer wall 1b1 of the bank 1b is formed, and a step 6a is formed inside the corner locking block 6, as shown in FIG. When stacking the folded containers in a folded state as described above, a known fitting portion formed on the back surface of the bottom portion 1 is attached to the folded container in the folded state located on the upper side. It is configured to be fitted to the step 6a of the above-mentioned corner locking block 6 formed at the four corners of the bottom 1 in the folded container in the open state.

Next, the short side wall 3 will be described mainly with reference to FIGS. 1, 5 and 6. FIG.

The short side wall 3 has a horizontally long, substantially rectangular plate-like portion 3.
a, and a lower horizontal frame 3b extending outward from the lower end of the plate-like portion 3a. The lower horizontal frame 3b has a lower surface formed on the short side bank 1b of the bottom 1 on the lower surface. A male hinge part 7 is formed corresponding to the female hinge part 4. The hinge male part 7 is composed of a pair of vertical pieces 7a suspended from the lower surface of the lower horizontal frame 3b, and a horizontal pin 7b arranged between the pair of vertical pieces 7a along the lower horizontal frame 3b. ing.
A concave portion 3 c having an open lower portion is formed at both lower corners of the short side wall 3, and a folding container is assembled in the concave portion 3 c so that the short side wall 3 is perpendicular to the bottom 1. When standing, the corner locking block 6 formed on the bottom 1 can enter the short side wall 3 without interference. Further, the plate-like portion 3a
An upper horizontal frame 3d is formed at the upper end of the
An appropriate number of vertical frames 3e are provided to connect both ends of the lower horizontal frame 3b and the upper horizontal frame 3d and the middle thereof.

Above the vertical end of the plate portion 3a constituting the short side wall 3, an engagement frame portion 8 perpendicular to the plate portion 3a extends in the long side wall 2 direction. A fitting through hole 8a is formed in the bent end portion 8, and an engagement protrusion 8b extending inward in the horizontal direction is formed below the fitting through hole 8a. Through holes 8c are formed above and below the mating projection 8b. Fitting through hole 8a, engaging projection 8b and through hole 8c
Are formed substantially horizontally along the plate-like portion 3a.

Numeral 9 denotes a vertical piece similar to the vertical piece 7a constituting the male male part 7 and vertically provided on the lower surface of the lower horizontal frame 3b of the short side wall 3, and the vertical piece 7a constituting the male male part 7 Are arranged at a predetermined distance from each other. The vertical piece 9 and the vertical piece 7a forming the male hinge part 7 are connected to the horizontal connecting beam 1.
It is connected by 0. Such a vertical piece 9 and a horizontal connecting beam 10 are spaced at a predetermined distance from an appropriate vertical piece 7a constituting a male male hinge portion 7 vertically provided on the lower surface of the lower horizontal frame 3b of the short side wall 3. Are located. In addition, the plate-like portion 3a
A handle opening 3f into which an operator's finger can be inserted is formed in the upper part of the center.

Next, the long side wall 2 will be described mainly with reference to FIGS.

The long side wall 2 has a horizontally long, substantially rectangular plate-like portion 2.
a, and a lower horizontal frame 2b extending outward from the lower end of the plate-like portion 2a. The lower horizontal frame 2b has a lower surface formed on the long side bank 1a of the bottom 1 on the lower surface. A pair of vertical pieces 7a, as described above, corresponding to the hinge female portion 4,
A hinge male part 7 comprising a horizontal pin 7b disposed between a pair of vertical pieces 7a is formed.

Reference numeral 2c denotes an upper horizontal frame extending outward from the upper end of the plate portion 2a, and 2d denotes a vertical frame connecting both ends of the lower horizontal frame 2b and the upper horizontal frame 2c.
Reference numeral 11 denotes an engagement frame portion extending outside the vertical frame 2d and formed by extending the plate-like portion 2a.
It has a thickness of about half of d. The engagement frame portion 11 is formed at a position where it comes into contact with or approaches the engagement frame portion 8 formed on the short side wall 3 when the folding container is assembled. 11a is formed on the engagement frame portion 11,
The engagement protrusion 8 is a fitting protrusion that extends outward,
It is configured to be inserted into the fitting through-hole 8a formed in the hole. Below the fitting projection 11a, a pair of locking pieces 11b, which are formed so that the locking projections 11b1 face each other, extend outward in a substantially horizontal direction. An engagement projection 8b formed on the engagement frame 8 of the short side wall 3 is inserted between the engagement pieces 11b.
b are formed with through holes 8 formed above and below the engagement protrusion 8b.
c, and the engaging projection 11b1 of the engaging piece 11b formed on the engaging frame 11 is engaged with the back surface of the engaging frame 8 formed on the short side wall 3. ing. Reference numeral 2e denotes an extended side wall formed outside the vertical frame 2d, which is fitted into a recess formed by the engagement projection 8b of the short side wall 3 and the bottom 1 when the folding container is assembled. It is configured to: In addition, if necessary, reinforcing horizontal ribs 2f may be provided on the outer surface of the plate-shaped portion 2a.
And an appropriate number of reinforcing vertical ribs 2g.

In order to hinge the long side wall 2 to the bottom 1, the long side 2 is lowered from above, and the horizontal pin 7 b of the hinge male part 7 formed on the long side 2 is connected to the long side of the bottom 1. By passing the gap formed between the outer wall 1a1 formed on the bank portion 1a and the free end of the hook 4b, the horizontal pin 7b of the hinge male portion 7 is moved along the long side bank portion 1 of the bottom portion 1.
The long side wall 2 and the bottom 1 are hinged by engaging with the hook 4b of the hinge female part 4 formed at the position a. Similarly,
In order to hinge the short side wall 3 to the bottom 1, the short side wall 2
Is lowered from above, and the horizontal pin 7b of the hinge male part 7 formed on the short side wall 3 is moved between the outer wall 1b1 formed on the short side bank 1b of the bottom 1 and the free end of the hook 4b. By passing through the formed gap, the horizontal pin 7b of the hinge male part 7 is engaged with the hook 4b of the hinge female part 4 formed on the short side bank part 1b of the bottom part 1 and the short side wall 3 The bottom 1 is hinged. Thus, the folding container is assembled.

In order to assemble the folding container shown in FIG. 3 from the folded state as shown in FIG. 1, the short side wall 3 laid on the bottom 1 and the long side wall 2 is assembled. Vertically, and then the long side wall 2 is vertically set. In this case, as shown in FIG. 12, in the conventional folding container, the short side wall 3 has the vertical plane L
As a result, it may rotate outward by a predetermined angle θ. As described above, when the short side wall 3 is rotated outward from the vertical plane L, the engagement frame portion 8 of the short side wall 3 that has been set up substantially vertically and the long side wall 2 that is set up almost vertically from the rear. Engagement frame 1
When the long side wall 2 is simply rotated with respect to the short side wall 3 erected in the vertical direction, the fitting projection 11 a formed on the engagement frame portion 11 of the long side wall 2 and the engagement Stop projection 11b
1 is a fitting through hole 8a formed in the engagement frame portion 8 of the short side wall 3.
Or through hole 8c, so that the worker can
Must be rotated in the vertical plane L direction to adjust the positional relationship between the engagement frame 8 of the short side wall 3 and the engagement frame 11 of the long side wall 2. It is not preferable to perform such adjustments one by one, because the work efficiency of assembling the folding container is reduced. As shown in FIG. 3, when the folding container is folded, the engagement frame 8 formed on the short side wall 3 is positioned at the center of the bottom 1 on the long side bank 1. Are fitted in fitting recesses 1c formed on both sides of the outer wall 1a1 located at the center.

According to the present invention, at the time of assembling the above-mentioned folding container, first, the short side wall 3 which is erected substantially vertically is erected slightly inward, that is, inwardly from the vertical plane L. It is configured as follows. In this way, first, the short side wall 3 erected substantially vertically is erected so as to be slightly inclined inward, so that the extended side wall portion 2 of the long side wall 2 erected vertically next to the short side wall 3
e comes into contact with the inner wall surface of the plate-shaped portion 3a of the short side wall 3, and the long side wall 2 is erected substantially vertically while pushing the short side wall 3 outward, so that the long side wall 2 is erected substantially vertically. At this point, the short side wall 3 is also set up substantially vertically, and therefore, the positional relationship between the engagement frame portion 8 of the short side wall 3 and the engagement frame portion 11 of the long side wall 2 set up earlier is shifted. Without such
By simply rotating the long side wall 2 with respect to the short side wall 3 that has been set up first, the fitting protrusion 11a and the locking protrusion 11b1 formed on the engagement frame portion 11 of the long side wall 2 are short-circuited. Side wall 3
Can be fitted into fitting through-holes 8a and 8c formed in the engaging frame portion 8 of FIG.

According to the present invention, as described above, during the assembling operation of the folding container, the short side wall 3 which is first set up can be set up so as to be slightly inclined inward.
As shown in FIGS. 6 and 8, a projection s1 functioning as the inner inclined member S of the short side wall 3 is formed on the lower surface of the lower horizontal frame 3b of the short side wall 3. By forming such projections s1, the projections s1 formed on the lower surface of the lower horizontal frame 3b of the short side wall 3 are formed on the short side bank 1b of the bottom 1 when assembling the folding container. The short side wall 3 which comes into contact with the upper end surface 1b1 'of the outer wall 1b1 and is first erected is slightly erected inward.

In FIG. 9, instead of forming the projection s1 on the lower surface of the lower horizontal frame 3b of the short side wall 3, the outer end face of the vertical piece 7a constituting the hinge male part 7 disposed on the short side wall 3 is shown. FIG. 7a1 shows an example in which a projection s2 functioning as the inner inclined member S of the short side wall 3 is protruded. By forming such projections s2, the projections s2 formed on the outer end surface 7a1 of the vertical piece 7a constituting the male hinge portion 7 of the short side wall 3 during the assembling work of the folding container are shortened by the short bottom 1 The short side wall 3 that first comes into contact with the inner surface 1b1 ″ of the outer wall 1b1 formed on the side bank 1b is erected so as to be slightly inclined inward.

FIG. 10 shows another embodiment different from FIGS. In this embodiment, the upper end surface 1b1 'of the outer wall 1b1 formed on the short side bank portion 1b of the bottom 1 has
The short side wall 3 with which the lower surface of the lower horizontal frame 3b of the short side wall 3 contacts.
An example in which a projection s3 functioning as an inner inclined member S of the first embodiment is protruded is shown. By forming such projections s3, the projections s3 formed on the upper end surface 1b1 ′ of the outer wall 1b1 formed on the short side bank 1b of the bottom 1 during the assembling work of the folding container are changed to the short side walls. 3 is a short side wall 3 that is first erected on the lower surface of the lower horizontal frame 3b.
However, it is erected slightly inward.

FIG. 11 shows still another embodiment different from FIGS. In this embodiment, the inner surface 1b1 ″ of the outer wall 1b1 formed on the short side bank 1b of the bottom 1 is provided.
A protrusion s4 functioning as an inner inclined member S of the short side wall 3 is provided so that the vertical surface 7a1 on the outer wall 1b1 side of the vertical piece 7a constituting the male hinge portion 7 disposed on the short side wall 3 abuts. An example is shown. By forming such projections s4, the vertical surface 7a1 on the outer wall 1b1 side of the vertical piece 7a constituting the male hinge part 7 disposed on the short side wall 3 is attached to the bottom 1 when assembling the folding container. The short side wall 3 which first comes into contact with the projection s4 protruding from the inner surface 1b1 "of the outer wall 1b1 formed on the short side bank portion 1b is set up so as to be slightly inclined inward. .

By forming the inner inclined member S of the short side wall 3 as described above, the short side wall 3 initially set
Can be erected slightly inward with respect to the vertical plane L, so that the engagement frame portion 11 formed on the long side wall 2 and the engagement frame formed on the short side wall 3 are set up later. Part 8
Therefore, the engagement between the engagement frame portions 8 and 11 can be performed smoothly,
The work efficiency of assembling the folding container will be improved. Note that the short side wall 3, which is first erected and slightly inclined inward, starts rotating before the turning operation of the long side wall 2 in the vertical direction starts, so that the short side wall 3 does not fall inward, that is, the bottom 1 direction. It is preferable that the contact state between the hinge female portion 4 and the hinge male portion 7 which hinge-join the first and short side walls 3 is strengthened. For example, the vertical piece 7a of the male hinge portion 7 and the plate-shaped portion 4a or the hook 4b of the female hinge portion 4 are brought into contact with a desired contact pressure so that the inwardly inclined short side wall 3 does not fall. To be configured. In addition, the short side bank 1 of the bottom 1
When the short side wall 3 is set up substantially vertically, the reinforcing block 5 formed on the bottom side of the reinforcing block 5 is fitted into the concave portion 3g formed at the lower end of the short side wall 3. By forming the side surface 5a and the vertical surface of the short side wall 3 forming the concave portion 3g with a desired contact pressure, the short side wall 3 inclined inward can be prevented from falling down. .

When assembling the foldable container, the short side wall 3 that has been erected first must be supported by the operator before the rotation of the long side wall 2 in the vertical direction starts. In order to prevent the problem of falling down, instead of the above-described countermeasure, it is also possible to provide a means for preventing falling down as shown as an example in FIG.

Numeral 12 denotes a protrusion which is formed on the side surface of a vertical piece 9 similar to the vertical piece 7a constituting the male male part 7 and is provided vertically on the lower surface of the lower horizontal frame 3b of the short side wall 3 to prevent inward fall. ,
Reference numeral 13 denotes an inward fall prevention projection formed on the side surface 5a of the reinforcing block 5 formed on the short side bank portion 1b of the bottom portion 1. When the short side wall 3 is erected, the inward prevention protrusion 13 formed on the side surface of the vertical piece 9 of the short side wall 3 is formed on the side surface of the reinforcing block 5 formed on the short side bank portion 1b of the bottom 1. 5
It is configured to engage with the inward fall prevention protrusion 13 formed at the position a. In this way, during the assembling work of the folding container, the short side wall 3 needs to be supported so that the worker does not need to support the short side wall 3 so that the worker does not fall down before the turning operation of the long side wall 2 in the vertical direction starts. The side wall 3 is configured to be self-supporting. The means for making the short side wall 3 self-supporting is known before the filing of the present application, and therefore, the above-mentioned self-supporting means is not limited at all, and various known self-supporting means can be adopted.

[0030]

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

By arranging the inner inclined member of the side wall, the side wall that is first erected can be erected inward with respect to the vertical plane. The positional relationship between the mating frame portion and the engaging frame portion formed on the side wall set up earlier does not shift, so that the engaging frame portions can smoothly engage with each other, and The work efficiency of assembling the container can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an assembled state 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 perspective view of the bottom of the folding container of the present invention.

FIG. 5 is a partial perspective view of a short side wall of the folding container according to the present invention.

FIG. 6 is a partially exploded perspective view of a short side wall and a bottom portion of the folding container of the present invention.

FIG. 7 is a partial perspective view of a long side wall of the folding container according to the present invention.

FIG. 8 is a partial side sectional view perpendicular to the short side wall including the bottom of the folding container according to the present invention in a state where the short side wall is erected.

FIG. 9 is a partial sectional side view similar to FIG. 8, showing another embodiment of the folding container of the present invention.

FIG. 10 is a partial sectional side view similar to FIG. 8, showing still another embodiment of the folding container according to the present invention.

FIG. 11 is a partial sectional side view similar to FIG. 8, showing still another embodiment of the folding container according to the present invention.

FIG. 12 is a partial side sectional view similar to FIG. 8 of a conventional folding container.

[Explanation of symbols]

 S ··· Inside inclined member 1 ··· Bottom 2 ··· Long side wall 3 ··· ····························································································· .... Engaging frame parts

Claims (1)

[Claims] 1. A folding container wherein a side wall disposed so as to surround a bottom portion is folded so as to overlap the bottom portion.
A folding container, wherein an inner inclined member that stands up inward is provided.