JP3958091B2 - Folding container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
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.
[0002]
[Prior art]
Conventionally, a long side wall 2 hinged to the opposed long side portion 1a of the bottom 1 having a substantially rectangular planar shape, and a short side wall 3 similarly hinged to the opposed short side 1b of the bottom 1 A folding container is known. In order to fold such a folding container from a state assembled in a box shape, first, the long side wall 2 is tilted toward the bottom 1 and overlapped with the bottom 1. It overlaps with the bottom part 1 so that it may mutually overlap. Next, the short side wall 3 is configured to fold as shown in FIG. 5 by tilting the short side wall 3 in the direction of the bottom 1 and overlying the long side wall 2 that is first tilted and overlapped with the bottom 1. ing. In addition, 1a1 is a recessed part formed in the long side part 1a of the bottom part 1, and when the short side wall 3 is fallen in the substantially horizontal shape, with respect to the short side wall 3 formed in the both ends of the short side wall 3 A known right-angled engagement frame 3a is configured to be inserted into the recess 1a1.
[0003]
[Problems to be solved by the invention]
In the conventional folding container, in the folded state, the short side wall 3 that is tilted later is placed on the upper surface of the long side wall 2 that is overlapped with the bottom 1 so that the tip portions thereof are overlapped with each other. The front end 3a1 of the engagement frame 3a formed on the short side wall 3 is not placed on the upper end 1a2 of the long side 1a constituting the recess 1a1 formed on the long side 1a of the bottom 1, A gap is formed between the tip 3a1 of the engagement frame 3a and the upper end 1a2 of the long side 1a, and the short side wall 3 is lifted from the long side 1a of the bottom 1.
[0004]
As described above, when the short side wall 3 is lifted from the bottom 1 in the folded state of the folding container, the height of the folded folding container is increased, and accordingly, the folded container in the folded state is used. There was a problem that the storage efficiency was lowered, and when folded folded containers were stacked, the stacked condition became unstable, and many folded folded containers could not be stacked. .
[0005]
An object of the present invention is to solve the problems of the above-described conventional folding container.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a bottom portion, one opposite side wall hinged to one lower opposed bank portion of the bottom portion, and the other opposite height of the bottom portion. An opposite side wall hinged to the high bank, and an engagement frame is formed at both ends of the one opposite side wall along the one opposite side wall. An engagement frame that is perpendicular to the other opposite side wall and extends in the direction of the one opposite side wall is formed on the other opposite side wall. When assembling into a box shape, first, the other opposite side wall overlaid on the one opposite side wall is set up substantially vertically, and then the one opposite side wall is set substantially vertical. Stand up and form on one of the opposite side walls When engaging with the engaging frame formed on the other opposite side wall and folding the box from the assembled state, first, on the bottom A folding container configured to fold the one opposite side wall so that a tip portion thereof overlaps, and then to fold the other opposite side wall over the one opposite side wall. In the central region of the inner wall surface of the other opposite side wall, a concave portion extending from the upper end to the lower end is formed, and in the folded state, the one end folded so that the tip end portion thereof overlaps Among the opposite side walls, the overlapping portion of the tip portion of the one side wall located above and the portion located in the vicinity thereof are formed in the central region of the inner wall surface of the other side wall. Of the one opposing side wall that is inserted and accommodated in the recessed portion and folded so that the tip end portion thereof overlaps, the one side wall located above does not contact the other opposite side wall. In the folded state, the concave portion into which the engaging frame formed on the other opposite side wall can be inserted is formed in the bank portion having a low bottom .
[0007]
【Example】
Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.
[0008]
Reference numeral 10 denotes a bottom portion having a rectangular planar shape, and a long side wall portion (long side portion) 10a opposed to the bottom portion 10 is hinged to a long side wall 20 and the bottom portion 10 is opposed to a short portion. A short side wall 30 is hinged to the side bank portion (short side portion) 10b. In the present embodiment, the height of the long side bank portion 10a is formed lower than the height of the short side bank portion 10b.
[0009]
Engagement frames 30 a similar to the engagement frame 3 a described above are formed at both ends of the short side wall 30 and extend at right angles to the short side wall 30 and extend in the direction of the long side wall 20. In this embodiment, the engagement frame 30a includes a fitting hole 30a1, a locking male protrusion 30a2 projecting from the inner surface of the engaging frame 30a located below the fitting hole 30a1, and a locking male protrusion 30a2. A through hole 30a3 is formed in the top and bottom.
[0010]
Engagement frames 20 a are formed along the long side walls 20 on the outer sides of both ends of the long side walls 20 so as to correspond to the engagement frames 30 a of the short side walls 30. The engaging frame 20 a is provided with a protrusion 20 a 1 that can be inserted into a fitting hole 30 a 1 formed in the engaging frame 3 a of the short side wall 30, and is formed on the engaging frame 3 a of the short side wall 30. A pair of locking pieces 20a2 are formed to hold and lock the locking male protrusion 30a2. The distal ends of the pair of locking pieces 20a2 are configured to be inserted into through holes 30a3 that are formed above and below the locking male projections 30a2 of the engaging frame 3a of the short side wall 30.
[0011]
Further, the long side bank portion 10a of the bottom portion 10 is formed with a concave portion 10c into which the engaging frame 3a disposed on the short side wall 30 can be inserted when the short side wall 30 is tilted toward the bottom portion 10. When the short side wall 30 is tilted in the direction of the bottom 10, the leading end surface 30 a 4 of the engagement frame 3 a disposed on the short side wall 30 is the long side bank portion of the bottom 10 that forms the recess 10 c. It is configured to be placed on the upper end 10c1 of 10a.
[0012]
A recess 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 that is folded later when the folding container assembled in a box shape is folded.
[0013]
As shown in FIG. 3, to fold the folded container into a box shape as shown in FIG. 1, first of all, the long side wall 20 superimposed on the bottom 10 As shown in FIG. 2, the short side wall 30 that is overlaid (the side wall that has been laid down later) stands upright, and then the long side wall that is overlaid on the bottom 10 (which has been laid down first). (Side wall) 20 is vertically assembled and assembled into a box shape. In the assembled state, the projection 20a1 of the engagement frame 20a of the long side wall 20 is formed in the engagement frame 3a of the short side wall 30. The pair of locking pieces 20a2 inserted into the provided fitting holes 30a1 and formed on the engaging frame 20a of the long side wall 20 are connected to the locking male protrusions 30a2 formed on the engaging frame 3a of the short side wall 30. It is held and locked, and the engagement frame 20a of the long side wall 20 Tip portions of the pair of locking pieces 20a2 been made is inserted into drilled holes 30a3 and below the Kakaritomeyu projections 30a2 of engagement frames 3a of the short side wall 30. In this way, the long side wall 20 that is folded down at the beginning of the folding container assembled in a box shape is configured so as not to easily fall in the direction of the bottom 10.
[0014]
Further, as shown in FIG. 1, in order to fold a folded container assembled in a box shape as shown in FIG. 3, first, the engagement frame 20a of the long side wall 20 and the short frame 20 are short. While releasing the engagement of the side wall 30 with the engagement frame 3a, the long side wall (the side wall to be tilted first) 20 is tilted in the direction of the bottom 10, and as shown in FIG. Overlay the bottom 10 so that the parts overlap each other. Next, the short side wall (side wall to be tilted later) 30 is folded and folded by being superimposed on the long side wall 20 superimposed on the bottom 10.
[0015]
As described above, among the long side walls 20 stacked on 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 positioned above and the portion positioned in the vicinity thereof are short. The side wall 30 is configured to enter and be accommodated in a recess 30c extending from the upper end to the lower end of the side wall 30, and is configured not to contact the short side wall 30 in a folded state. Thus, among the long side walls 20 stacked on the bottom 10 so that the front end portions overlap each other, the overlapping portion 20 ′ at the front end portion of the long side wall 20 positioned above and the portion positioned in the vicinity thereof are short side walls. 30 is configured so as to enter and be accommodated in a recess 30c extending from the upper end to the lower end of 30, and is configured not to contact the short side wall 30 in a folded state. The front end surface 30a4 of the engagement frame 3a is surely placed on the upper end 10c1 of the long side bank portion 10a that forms the concave portion 10c of the bottom portion 10. Therefore, the short side wall 30 is the length of the bottom portion 10a. It does not float from the side portion 10a.
[0016]
As shown in FIG. 3, in the folded state of the folding container, among the long side walls 20 stacked on the bottom 10 so that the front end portions overlap each other, the front end portion of the long side wall 20 positioned above The overlapping portion 20 ′ and the portion located in the vicinity thereof are inserted into and accommodated in the recess 30c extending from the upper end to the lower end of the short side wall 30 and are folded so as not to contact the short side wall 30 in the horizontal state. As a result, the height of the folded folding container is reduced, and thus the accommodation efficiency of the folded folding container is improved.
[0017]
Moreover, in the state in which the folding container is folded, among the long side walls 20 stacked on the bottom portion 10, the overlapping portion 20 ′ at the tip of the long side wall 20 positioned above and the portion positioned in the vicinity thereof are the short side walls. 30 is configured so as to enter and be accommodated in a recess 30c extending from the upper end to the lower end of 30 and to be folded and not to contact the short side wall 30 in a horizontal state. Since the front end surface 30 a 4 of the frame 3 a is configured to be placed on the upper end 10 c 1 of the long side bank portion 10 a that constitutes the concave portion 10 c of the bottom portion 10, the short side wall 30 is the long side portion 10 a of the bottom portion 10. Therefore, the stacked state of the folded folded containers is stable, and therefore, a large number of folded folded containers can be stacked. The
[0018]
Since the concave portion 30c extending from the upper end to the lower end is formed in the central region of the inner wall surface 30b of the short side wall 30 that is tilted later, the strength of the short side wall 30 is reduced little, and the height of the folded folding container is high. In order to reduce the height, the strength of the long side wall 20 does not decrease compared to a conventional folding container in which the upper half of the long side walls that overlap each other is made thinner.
[0019]
The recess 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 standing substantially vertically is viewed in plan. By forming in this way, it is possible to prevent the stored contents from being caught by the corner formed by the inner wall surface 30b and the recess 30c of the short side wall 30.
[0020]
In the embodiment described above, an example in which the side walls are formed by the opposed long side walls 20 and the opposed short side walls 3 is shown. However, in the present invention, the lateral widths of the four side walls are the same. It can also be applied to folding containers.
[0021]
【The invention's effect】
Since this invention has the structure demonstrated above, there exists an effect described below.
[0022]
Of the side walls that are overlaid on the bottom so that the front end portions overlap, the front end portion of the side wall that is positioned above and the portion that is positioned in the vicinity thereof enter the recess formed in the side wall that is tilted later and are accommodated. As a result, the height of the folded folding container is reduced, so that the accommodation efficiency of the folded folding container is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a folding container according to the present invention assembled in a box shape.
FIG. 2 is a perspective view in the middle of assembling the folding container of the present invention.
FIG. 3 is a perspective view of the folding container of the present invention in a folded state.
FIG. 4 is a vertical cross-sectional view along the short side of the bottom of the folded container of the present invention.
FIG. 5 is a perspective view of a state in which a conventional folding container is folded.
[Explanation of symbols]
10 ·································· 20 ..Recesses

Claims (1)

The bottom, one opposite side wall hinged to one of the lower and lower banks of the bottom, and the other opposite hinge of the bottom to the other higher height of the bank An engaging frame is formed at both ends of the one opposite side wall along the one opposite side wall, and the other opposite side wall is provided with the other side. An engaging frame is formed at right angles to the opposite side walls and extending in the direction of the one opposite side wall. When the box is assembled from the folded state, first, The other opposite side wall that is overlaid on one opposite side wall is erected substantially vertically, then the one opposite side wall is erected substantially vertically, and the one opposite side wall is formed. The engaging frame and the other When engaging with the engagement frame formed on the side wall and folding from the assembled state in the box shape, first, the one opposite side wall is placed on the bottom portion with the tip portion thereof being A folding container configured to fold over and then fold over the one opposite side wall so that the other opposite side wall overlaps, the center of the inner wall surface of the other opposite side wall In the region, a recess extending from the upper end to the lower end is formed, and in the folded state, the one located above the one of the opposite side walls folded so that the tip end portion overlaps. The overlapping portion of the front end portion of the side wall and a portion located in the vicinity thereof enter and are accommodated in the recess formed in the central region of the inner wall surface of the other opposite side wall, Of the one opposing side wall of which is folded such that the end portions overlap, the one side wall located above it, is configured so as not to contact with the other opposing side wall, and the bottom portion The folding container is characterized in that the bank portion having a low height is formed with a recess into which the engaging frame formed on the other opposite side wall can be inserted in the folded state.

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