JP3728190B2 - 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, as shown in FIGS. 6 to 8, a bottom 1 having a substantially rectangular plane shape, a long side wall 2 connected to a bottom long side wall 1 a opposed to the bottom 1 via a hinge portion, and a bottom portion There is also known a folding container comprising a short side wall 3 connected through a hinge part to a bottom short side wall 1b having a height lower than that of the above-mentioned bottom long side wall 1a. In the folded state as shown in FIG. 8, the short side wall 3 is folded on the bottom 1, and the long side wall 2 is folded on the folded side wall 3. As shown in FIG. 7, the long side wall 2 in the state is erected perpendicular to the bottom 1, and then the short side wall 3 in the folded state is erected perpendicularly to the bottom 1. As shown in FIG. 6, it is configured to be assembled in a box shape.
[0003]
End locking blocks 4 extending upward beyond the bottom long side wall 1a are formed at both ends of the bottom long side wall 1a. The end locking block 4 includes a mounting surface 4a and a mounting surface. And a protruding portion 4b protruding upward from the mounting surface 4a. The protrusion 4b is composed of a protrusion 4b ′ extending along the bottom long side wall 1a and a protrusion 4b ″ perpendicular to the protrusion 4b ′ and extending in the direction of the bottom short side wall 1b. The shape is substantially L-shaped.
[0004]
In addition, on the back surface of the bottom portion 1, as is well known, when a folding container is stacked, a peripheral portion having a predetermined width on the back surface of the bottom portion 1 that is fitted into the opening portion of the folding container located below is left. Thus, a bottom fitting portion protruding downward is formed. Then, when stacking the folded containers in the folded state, the top surface 4a of the end locking block 4 formed on the bottom part 1 of the folded container located under the folded state is placed on the upper surface. The bottom fitting part of the folded container in the folded state located at the position is fitted and placed, and the bottom surface 1 ′ of the bottom part 1 located outside the bottom fitting part is connected to the end locking block 4. It is comprised so that it may be mounted in the protrusion part 4b.
[0005]
When the folded containers in the folded state are stacked, the folded container in the folded state located above the folded container in the folded state located along the bottom short side wall 1b. The bottom fitting part of the folded container in the folded state located above the protrusion that extends along the bottom long side wall 1a of the folded container in the folded state, even when trying to move horizontally in the vertical direction Since it is in contact with the portion 4b ', its movement is prevented, and the folded container in the folded state located on the upper side is along the bottom long side wall 1a with respect to the folded container in the folded state located below. The bottom mating part of the folded folding container located on the upper side is folded down on the lower side. The folded container in contact with the projecting portion 4b "extending in the direction of the bottom short side wall 1b of the folded container, so that the movement is prevented, and thus the folded folded containers are stacked in a stable state. It is configured to be able to.
[0006]
In addition, 2 'is an engaging part in which the fitting hole etc. were formed arrange | positioned at the both ends of the long side wall 2, and 3' was arrange | positioned in the both ends of the short side wall 3. It is an engaging part which has a latching claw etc. which are fitted in the fitting hole formed in the engaging part of the above-mentioned long side wall 2, and is latched by the engaging part of the long side wall 2, and a folding container assembles When engaged, the engaging portions 2 ′ disposed at both ends of the long side wall 2 and the engaging portions 3 ′ disposed at both ends of the short side wall 3 are engaged with each other. The engagement between the long side wall 2 and the short side wall 3 is released so that the short side wall 3 does not fall inward.
[0007]
[Problems to be solved by the invention]
In the conventional folding container, the bottom long side wall 1a of the bottom 1 is taller than the bottom short side wall 1b, and the width in the lateral direction is longer, so that there is a problem that the bottom long side wall 1a is weak in strength. . For example, when a lateral external force is applied to the upper end of the bottom long side wall 1a, the bottom long side wall 1a is inclined, or when an external force is applied perpendicularly to the upper end of the bottom long side wall 1a. There was a problem that the bottom long side wall 1a was deformed or buckled.
[0008]
An object of the present invention is to solve the problems of the above-described conventional folding container.
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a bottom portion having an opposed bottom long side wall and an opposed bottom short side wall, a long side wall hinged to the opposed bottom long side wall, and an opposed bottom short side. A short side wall hinged to the side wall and end locking blocks formed at both ends of the bottom long side wall , and the bottom long side wall has a height higher than the bottom short side wall , and In the folding container in which the lateral width of the bottom long side wall is longer than the lateral width of the bottom short side wall, it is formed by the inner wall surface of the end locking block and the upper surface of the bottom short side wall. A reinforcing member having a quadrangular arcuate upper surface that prevents the lower end of the long side wall from coming into contact with the long side wall when the long side wall rotates in the vertical direction; On the bottom long side of the reinforcing member Corners, and it is formed at the same height as the projecting portion extending to the bottom short side wall direction of said end portion engaging the block.
[0010]
【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. In addition, about the same component as the folding container mentioned above, while omitting the description, the same code | symbol is used.
[0011]
The folding container of the present embodiment also has a bottom portion 1 having a substantially rectangular plane shape, a long side wall 2 connected to a bottom long side wall 1a facing the bottom portion 1 via a hinge portion, and the bottom portion 1 facing each other. Similarly, it is composed of a short side wall 3 connected to a bottom short side wall 1b having a height lower than that of the bottom long side wall 1a via a hinge portion. Moreover, the edge latching block 4 which has the mounting surface 4a and the protrusion part 4b is formed in the both ends of the bottom part long side wall 1a.
[0012]
In the present embodiment, a plate or block is formed at the corner formed by the inner wall surface 1c formed by the bottom long side wall 1a of the bottom portion 1 and the end locking block 4 and the upper surface 1b1 of the bottom short side wall 1b. The reinforcing member 5 is formed. The upper corner 5a on the bottom long side wall 1a side of the reinforcing member 5 is substantially the same as the protruding portion 4b "extending in the direction of the bottom short side wall 1b of the end locking block 4 formed at both ends of the bottom long side wall 1a. Further, the reinforcing member 5 has a quadrant arcuate upper surface 5b having a predetermined radius of curvature R that is curved downward from the upper corner 5a toward the bottom short side wall 1b. Further, a substantially vertical vertical surface 5c extends from near the lower portion of the quadrant arcuate upper surface 5b.
[0013]
As described above, the reinforcing member disposed at the corner formed by the inner wall surface 1c formed by the bottom long side wall 1a of the bottom portion 1 and the end locking block 4 and the upper surface 1b1 of the bottom short side wall 1b. 5 has a quadrant arcuate upper surface 5b having a predetermined radius of curvature R that is curved downward from the upper corner 5a on the bottom long side wall 1a side toward the bottom short side wall 1b. The curvature radius R is obtained by rotating the long side wall 2 in the vertical direction from the folded state of the folding container shown in FIG. 3 or 4 as shown in FIG. 1 and FIG. In the process of standing the long side wall 2 substantially vertically, the outer front end 2a ′ of the lower horizontal rib 2a located near the reinforcing member 5 of the long side wall 2 is formed with a curvature radius R so as not to contact the reinforcing member 5. Yes.
[0014]
Not only the embodiment described above but also the corners formed by the inner wall surface 1c formed by the bottom long side wall 1a of the bottom portion 1 and the end locking block 4 and the upper surface 1b1 of the bottom short side wall 1b. The reinforcing member 5 is formed by rotating the long side wall 2 in a substantially horizontal state in the vertical direction so as to stand substantially vertically. As long as' does not come into contact with the reinforcing member 5, it can be appropriately formed into various shapes. For example, as shown in FIG. 3 or FIG. 4, the reinforcing member 5 extends upward beyond the outer front end portion 2 a ′ of the lower horizontal rib 2 a of the long side wall 2 in a substantially horizontal state. That is, the substantially quadrangular reinforcing member 5 may be omitted by omitting the quadrant arcuate upper surface 5b portion of the above-described embodiment shown by a dotted line in FIG.
[0015]
As described above, the reinforcing member 5 is arranged at the corner formed by the inner wall surface 1c formed by the bottom long side wall 1a of the bottom portion 1 and the end locking block 4 and the upper surface 1b1 of the bottom short side wall 1b. Since it is installed, it is possible to increase the strength of the bottom long side wall 1a which is taller than the bottom short side wall 1b and has a longer lateral width, and therefore the overall strength and rigidity of the folding container can be increased. As a result, the life of the folding container can be extended. In particular, as described above, a quadrant arcuate upper surface 5b portion is formed, and the upper corners 5a on the bottom long side wall 1a side of the reinforcing member 5 are formed at both ends of the bottom long side wall 1a. The reinforcing member 5 can be enlarged by configuring it so as to have the same height as the protruding portion 4b "extending in the direction of the bottom short side wall 1b of the portion locking block 4, and therefore the strength of the bottom long side wall 1a. Can be further increased, and the overall strength and rigidity of the folding container can be further increased.
[0016]
Moreover, although the example which the edge part locking block 4 extended above the bottom long side wall 1a is formed in the both ends of the bottom long side wall 1a is shown in the Example mentioned above, Such an end locking block 4 can be omitted. In this case, the reinforcing member 5 is formed in a substantially square shape in which a quadrant arcuate upper surface 5b portion is omitted as shown by a dotted line in FIG.
[0017]
In addition, it is preferable that the bottom part 1, the long side wall 2, and the short side wall 3 mentioned above are each integrally molded with a synthetic resin by injection molding or the like.
[0018]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0019]
Since the reinforcing member is disposed at the corner formed by the inner wall surface of the bottom long side wall and the top surface of the bottom short side wall, the bottom long side wall is taller than the bottom short side wall and has a longer lateral width. The strength can be increased, and thus the overall strength and rigidity of the folding container can be increased, and thus the life of the folding container can be extended.
[0020]
The upper corners on the bottom long side wall of the reinforcing member have substantially the same height as the end locking blocks formed at both ends of the bottom long side wall, and the substantially horizontal long side wall is directly attached to the reinforcing member. In the process of rotating in the direction, since the arcuate upper surface having a radius of curvature that prevents the lower end portion of the long side wall from coming into contact with the reinforcing member is formed, the reinforcing member can be made larger. The strength of the side wall can be further increased, and the overall strength and rigidity of the folding container can be further increased.
[Brief description of the drawings]
FIG. 1 is a perspective view of a folding container according to the present invention in an assembled state.
FIG. 2 is a perspective view in the middle of assembling the folding container of the present invention.
FIG. 3 is a perspective view showing a folded state of the folding container of the present invention.
FIG. 4 is a partial perspective view near the corner of the folding container of the present invention in a folded state.
FIG. 5 is a partial perspective view of the vicinity of the corner of the folding container of the present invention in a state where the short side wall is substantially horizontal and the long side wall is substantially vertical.
FIG. 6 is a perspective view of an assembled state of a conventional folding container.
FIG. 7 is a perspective view in the middle of assembling a conventional folding container.
FIG. 8 is a perspective view of a conventional folding container in a folded state.
[Explanation of symbols]
1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Bottom 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long Side Wall 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short Side Wall 4 ... .... End lock block 5

Claims (1)

A bottom having an opposing bottom long side wall and an opposing bottom short side wall; a long side wall hinged to the opposing bottom long side wall; a short side wall hinged to the opposing bottom short side wall; and the bottom length End locking blocks formed at both ends of the side wall, and the height of the bottom long side wall is higher than the height of the bottom short side wall , and the lateral width of the bottom long side wall is In the folding container formed longer than the lateral width of the bottom short side wall, the long side wall extends in the vertical direction at the corner formed by the inner wall surface of the end locking block and the upper surface of the bottom short side wall. A reinforcing member having a quadrangular arcuate upper surface is disposed so that the lower end of the long side wall does not come into contact with the upper side when rotated, and the upper corner on the bottom long side wall side of the reinforcing member Is the bottom of the end locking block Container folding, characterized in that it is formed at the same height as the projecting portion extending in the short side wall direction.

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