JP2003285833A - Folding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the height of a folded folding container to improve its housing efficiency. <P>SOLUTION: The folding container comprises a bottom 10, long side walls 20 coupled to long sides 10a opposite to each other at the bottom via hinges, and short side walls 30 coupled to short sides 10b opposite to each other at the bottom via hinges. When the container is folded, a pair of the long side walls are folded on the bottom with their front ends overlapped each other, and the short side walls are folded on the top of the folded long side walls. When the long side walls are folded on the bottom with their front ends overlapped each other, the front end part and its vicinities of the long side wall on the top of the other long side wall is fitted and housed in recessions 30c formed on the short side walls. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container capable of folding a side wall disposed so as to surround a bottom portion so as to overlap the bottom portion. 2. Description of the Related Art Conventionally, a long side wall 2 hinged to an opposite long side 1a of a bottom 1 having a substantially rectangular planar shape, and a short side 1b of the bottom 1 opposite the same. Foldable containers consisting of hinged short side walls 3 are known. In order to fold such a folding container from the state of being assembled in a box shape, first, the long side wall 2 is tilted in the direction of the bottom 1 and overlapped on the bottom 1. So that they overlap each other,
It is overlaid on the bottom 1. Next, the short side wall 3 is attached to the bottom 1
It is configured to be folded as shown in FIG. 5 by being folded in the direction and overlaid on the long side wall 2 which has been folded down first and overlapped with the bottom portion 1. In addition, 1a1 is
A concave portion formed in the long side portion 1a of the bottom portion 1;
Is configured to be inserted into the above-mentioned recess 1a1 when a known engaging frame 3a formed at both ends of the short side wall 3 and perpendicular to the short side wall 3 is folded down substantially horizontally. Have been. [0003] In the conventional folding container, in the folded state, it is turned down first, and the bottom portion 1 is overlapped so that the tips thereof overlap each other.
The top surface of the long side wall 2 that is overlapped with the short side wall 3 comes into contact with the upper surface of the long side wall 2, and the distal end 3 a 1 of the engagement frame 3 a formed on the short side wall 3 is formed on the long side 1 a of the bottom 1. Recess 1
a1 and the upper end 1a of the long side portion 1a without being placed on the upper end 1a2 of the long side portion 1a.
2, a short side wall 3 is in a state of rising from the long side 1a of the bottom 1. As described above, when the short side wall 3 is raised from the bottom 1 in the state where the folding container is folded, the height of the folded container in the folded state is increased, and accordingly, the height of the folded container is increased. The problem is that the storage efficiency of the folded containers is reduced, and when the folded containers are stacked, the stacked state becomes unstable, and a large number of folded containers cannot be stacked. was there. An object of the present invention is to solve the problems of the above-mentioned conventional folding container. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bottom, a side wall hinged to one of the opposite sides of the bottom, and another of the bottom. In the folded state, one opposing side wall is folded over the bottom so that its tip overlaps, and the other side is further laid on the bottom. In a folding container configured so that opposing side walls are folded, a top part of a side wall positioned above and a part located in the vicinity of a top part of a side wall that is first collapsed and that is overlaid on a bottom so that front parts overlap. Are configured to enter and be accommodated in a concave portion formed in a side wall which is later collapsed. An embodiment of the present invention will be described below, but the present invention is not limited to the embodiment unless it exceeds the gist of the present invention. Reference numeral 10 denotes a bottom portion having a rectangular planar shape, and a long-side bank portion (long-side portion) 10a opposed to the bottom portion 10;
, A long side wall 20 is hinged, and a short side wall 30 is hingedly connected to the opposite short side bank portion (short side portion) 10 b of the bottom portion 10. In the present embodiment, the height of the long side bank 10a is set to the short side bank 10b.
Is formed lower than the height. At both ends of the short side wall 30, an engagement frame 30a similar to the above-described engagement frame 3a is formed, which is perpendicular to the short side wall 30 and extends in the direction of the long side wall 20. .
In this embodiment, the engagement frame 30a has a fitting hole 30a.
1, a locking male projection 30a2 protruding from the inner surface of the engagement frame 30a located below the fitting hole 30a1, and a locking male projection 3
Through holes 30a3 formed above and below 0a2 are formed. On the outside of both ends of the long side wall 20, short side walls 3 are provided.
An engagement frame 20a is formed along the long side wall 20 corresponding to the 0 engagement frame 30a. The engagement frame 20a has a projection 20a1 that can be inserted into a fitting hole 30a1 formed in the engagement frame 3a of the short side wall 30 and protrudes therefrom.
A pair of locking pieces 20a2 for holding and locking the locking male protrusion 30a2 formed on the 0 engagement frame 3a are formed. The distal ends of the pair of locking pieces 20a2 are configured to be inserted into through holes 30a3 formed above and below the locking male projections 30a2 of the engagement frame 3a of the short side wall 30. The long side bank 10a of the bottom 10 has a recess 10c into which the engaging frame 3a provided on the short side 30 can be inserted when the short side 30 is tilted in the direction of the bottom 10. When the short side wall 30 is tilted in the direction of the bottom 10, the front end surface 3 of the engagement frame 3 a disposed on the short side wall 30 is formed.
0a4 is configured to be placed on the upper end 10c1 of the long-side bank portion 10a forming the concave portion 10c. When the folding container assembled in a box shape is folded, a concave portion 30c extending from the upper end to the lower end of the short side wall 30 is formed in the central region of the inner wall surface 30b of the short side wall 30 which is later folded down. ing. As shown in FIG. 3, to assemble the folded container into a box, as shown in FIG. 1, first of all, a long container stacked on the bottom 10 is shown. As shown in FIG. 2, the short side wall (side wall which has been laid down) 30 overlaid on the side wall 20 is formed as shown in FIG.
Standing up substantially vertically, and then assembling the long side wall (the side wall that has been collapsed first) 20 superimposed on the bottom portion 10 in a box shape by standing up substantially vertically,
The projection 20a1 of the engagement frame 20a of the long side wall 20 is
The engagement frame 30a1 formed in the engagement frame 3a of the short side wall 30 is inserted into a fitting hole 30a1 formed in the engagement frame 3a of the short side wall 30. The engaging male projections 30a2 formed are sandwiched and locked, and the distal ends of a pair of locking pieces 20a2 formed on the engaging frame 20a of the long side wall 20 are engaged with the engaging frame 3a of the short side wall 30. It is inserted into through holes 30a3 formed above and below the male projection 30a2. In this way, the first long side wall 20 of the folding container assembled in a box shape is simply configured not to fall in the direction of the bottom 10. Also, as shown in FIG. 1, in order to fold the folding container assembled in a box shape as shown in FIG. 3, first, the engaging frame of the long side wall 20 is engaged. As shown in FIG. 2, the engagement between the engagement frame 3 a of the short side wall 20 a and the short side wall 30 is released, and the long side wall (side wall that is first collapsed) 20 is folded down toward the bottom 10, and as shown in FIG. 20 so that the tips of 20 overlap each other.
Layer on. Next, the short side wall (side wall which is later lowered) 30
Is folded down by being overlaid on the long side wall 20 that is overlaid on the bottom 10. As described above, the long side walls 20 overlapped on the bottom portion 10 so that the tip portions overlap each other.
Overlapping portion 20 'at the tip of long side wall 20 located above
And a portion located in the vicinity of the short side wall 30 is configured to enter and be accommodated in the concave portion 30c extending from the upper end to the lower end of the short side wall 30 so as not to abut on the short side wall 30 which is folded and horizontal. I have. As described above, of the long side walls 20 overlapped with the bottom portion 10 so that the front end portions overlap each other, the overlapping portion 20 ′ of the front end portion of the long side wall 20 located above and the portion located in the vicinity thereof are the short side wall. 3
0 is arranged so as to enter and be accommodated in the concave portion 30c extending from the upper end to the lower end of the short side 30 so as not to abut on the short side wall 30 in the folded and horizontal state. The distal end surface 30a4 of the engagement frame 3a is surely formed on the long side bank 10 forming the recess 10c of the bottom 10.
Therefore, the short side wall 30 does not rise from the long side portion 10 a of the bottom portion 10. As shown in FIG. 3, when the folding container is in a folded state, the long side walls 20 overlapped on the bottom 10 so that the leading ends overlap each other.
Of these, the overlapped portion 20 ′ of the tip portion of the long side wall 20 located above and the portion located in the vicinity thereof enter into the recess 30 c extending from the upper end to the lower end of the short side wall 30 and are accommodated and folded. Since it is configured not to abut on the short side wall 30 in the horizontal state, the height of the folded container is reduced, and the storage efficiency of the folded container is improved. Further, when the folding container is folded, of the long side walls 20 superimposed on the bottom portion 10, the overlapping portion 2 at the tip of the long side wall 20 located above.
0 ′ and the portion located in the vicinity thereof are configured to enter and be accommodated in the concave portion 30c extending from the upper end to the lower end of the short side wall 30, and to be folded so as not to contact the short side wall 30 in a horizontal state. Further, the distal end surface 30a4 of the engagement frame 3a disposed on the short side wall 30 is
c, the short side wall 30 does not rise from the long side portion 10a of the bottom 10 and is therefore folded. The stacking state of the folded containers is stable, so that a large number of folded containers can be stacked. The inner wall surface 30b of the short side wall 30 which is later fallen down
Formed in the central region of the lower side, the recess 30c extending from the upper end to the lower end reduces the strength of the short side wall 30, and further reduces the height of the folded container in the folded state. The strength of the long side wall 20 does not decrease as compared with a conventional folding container in which the upper half of the container is made thinner. The shape of the concave portion 30c formed in the central region of the inner wall surface 30b of the short side wall 30 is preferably formed in a trapezoidal shape or an arc shape when the short side wall 30 which is set up substantially vertically is viewed in plan. . By forming in this manner, it is possible to prevent the stored contents from being caught on the corner formed by the inner wall surface 30b of the short side wall 30 and the concave portion 30c. In the above-described embodiment, an example is shown in which the side wall is formed by the opposing long side wall 20 and the opposing short side wall 3. The same can be applied to folding containers. Since the present invention has the above-described configuration, the following effects can be obtained. [0022] Of the first collapsed side walls that are overlapped on the bottom so that the top portions overlap each other, the top portion of the upper side wall and the portion located in the vicinity of the top portion are formed in recesses formed in the side wall that is later collapsed. Since it is configured to be retracted and stored, the height of the folded folder is reduced, and therefore the storage efficiency of the folded container is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which a folding container according to the present invention is assembled in a box shape. FIG. 2 is a perspective view of the folding container according to the present invention during assembly. FIG. 3 is a perspective view showing a state where the folding container of the present invention is folded. FIG. 4 is a vertical sectional view along a short side of a bottom portion of the folding container according to the present invention in a folded state. FIG. 5 is a perspective view showing a state where a conventional folding container is folded. [Description of Signs] 10 ・ ・ ・ Bottom 20 ・ ・ ・ Long Side Wall 30 ・ ・ ・ Short Side Wall 30c ・ ・ ・..... Recess

Claims (1)

Claims: 1. A bottom, a side wall hinged to one opposite side of the bottom, and a side wall hinged to another opposite side of the bottom, and In a folded state, in the folding container, one opposing side wall is folded on the bottom so that the tip part overlaps, and the other opposing side wall is further folded thereon. Of the side walls that are first collapsed and overlapped on the bottom so that the top portions overlap, the front end portion of the upper side wall and the portion located in the vicinity thereof enter the recess formed in the side wall that is later collapsed. A foldable container configured to be contained.