JP2005047506A - Foldable container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent a failure in slide stacking. <P>SOLUTION: A foldable container which has a bottom part 1, opposite long side walls 2 hinge-connected to the bottom part, and opposite short side walls 3 similarly hinge-connected to the bottom part, and can be folded by making the long side walls and the short side walls lay down so as to be put on the bottom part. Upper flange parts 1e each having a horizontal face 1e1 and an inclined face 1e2 extending downward from the outer side edge of the horizontal face are formed on the long side walls, and restricting projections 7 are formed on inclined parts 5a of skirt parts 5 formed on the bottom part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, the long side wall connected to the opposing long side portion of the bottom portion having a planar shape formed in a substantially rectangular shape via a hinge member, and the short side portion of the above bottom portion facing each other via the hinge member The long side wall and the short side wall are assembled so as to be box-shaped by standing up the long side wall and the short side wall substantially perpendicularly to the bottom part, and the long side wall and the short side wall are overlaid on the bottom part. The present invention relates to a folding container that can be folded.
[0002]
[Prior art]
Conventionally, when stacking a folding container similarly assembled in a box shape on a folding container assembled in a box shape, one short side portion of the short side portions of the bottom portion of the folding container located above is opposed Place it near one end of the opposite long side wall of the folding container located below, and then slide the upper folding container over the upper surface of the opposite long side wall of the folding container located below So-called slide stacking is performed, in which the folding container positioned above is stacked on the folding container positioned below by being moved while being moved.
[0003]
In order to perform slide stacking as described above, a rail protrusion is provided on the upper surface of the long side wall, and a rail groove into which the rail protrusion is fitted along the long side portion of the bottom is provided on the back surface of the bottom. The formed folding container is disclosed in Patent Document 1.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-335029
[Problems to be solved by the invention]
In the conventional folding container described above, when slide stacking is performed, the rail protrusion protruding on the upper surface of the opposed long side wall of the folding container positioned below is placed on the back surface of the bottom of the folding container positioned above. The rail groove must be fitted into the formed rail groove, but since the rail groove is formed on the back surface of the bottom, the workability of fitting the rail protrusion into the rail groove is poor, and therefore the workability of the slide stacking work There was a problem of being bad.
[0006]
In addition, since the rail protrusion is provided on the upper surface of the long side wall, when storing the article in the folding container assembled in the box shape, or when taking out the article from the folding container assembled in the box shape For example, there is a problem that the article comes into contact with the rail projection and the rail projection is damaged.
[0007]
An object of the present invention is to solve the problems of the above-described conventional folding container.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a bottom portion, opposing long side walls hinged to the bottom portion, and opposing short side walls similarly hinged to the bottom portion. In the folding container that can be folded by being overlaid on the bottom, an upper flange portion having a horizontal surface and an inclined surface extending downward from the outer edge of the horizontal surface is formed on the long side wall, and at the bottom A restriction protrusion is formed on the inclined portion of the formed skirt.
[0009]
【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.
[0010]
The folding container of the present invention includes a bottom 1, a long side wall 2 that is hinged to the long side bank 1a of the bottom 1, and a short side bank 1b that is lower than the long side 1a. From the assembled state in the box shape shown in FIG. 1, first, the short side wall 3 is formed as shown in FIG. The folding container is placed at a height as shown in FIG. 3 by tilting over the bottom 1 and then tilting the long side wall 2 over the short side wall 3 superimposed on the bottom 1. It is configured so that it can be folded into a low compact. Further, from the state shown in FIG. 3, the long side wall 2 is erected substantially vertically, and then the short side wall 3 is erected substantially vertically, so that the folded side is folded as shown in FIG. The container can be assembled into a box shape.
[0011]
Next, the bottom 1 will be described mainly with reference to FIGS. 4 and 5.
[0012]
The back surface shape of the bottom part 1 is formed in a substantially rectangular shape, and the back surface of the bottom part 1 is left with a frame-like region 1e having a predetermined width from the long side 1c and the short side 1d of the back surface of the bottom part 1. A fitting block portion 4 having a rectangular shape is suspended. The fitting block part 4 has a peripheral wall 4a perpendicular to the back surface of the bottom part 1, and on the inner side of the peripheral wall 4a is a long side rib 4b parallel to the long side 1c and a short side parallel to the short side 1d. A rib 4c is vertically provided, and the long side rib 4b and the short side rib 4c are formed so as to intersect with each other. As in the present embodiment, the fitting block portion 4 can be constituted by the peripheral wall 4a, and the long-side rib 4b and the short-side rib 4c that are suspended so as to intersect the peripheral wall 4a. A long side rib 4b and a short side rib 4c are formed over a predetermined width along the peripheral part of the peripheral wall 4a, and the other central region is formed by expanding the bottom 1 downward. In addition, the long side rib 4b and the short side rib 4c can be formed in a predetermined region of the central region. In any case, the long side ribs 4b and the short side ribs 4c are formed on the inner peripheral portion of the peripheral wall 4a along at least the predetermined width along the peripheral wall 4a.
[0013]
In this embodiment, as shown in FIGS. 4 and 6, the peripheral wall 4a of the fitting block portion 4 located near both end portions of the long side 1c of the bottom portion 1 is entirely or over a predetermined height. In addition, the deleted peripheral wall 4a is formed with an inclined surface 4a inclined in the frame-shaped region 1e direction, and at both ends of the short side rib 4c connected to the deleted peripheral wall 4a, An inclined surface 4c1 that is inclined in the direction of the frame-shaped region 1e is formed. Thus, the fitting block portion 4 located in the vicinity of both end portions of the long side 1c of the bottom portion 1 is formed at both end portions of the inclined surface 4a1 formed on the deleted peripheral wall 4a and the short side rib 4c. An inclined notch D formed by the inclined surface 4c1 is formed. Further, the peripheral wall 4a positioned on the short side 1d side of the bottom 1 is connected to the peripheral wall 4a on the short side 1d side by connecting the tip of the short side rib 4c adjacent to the peripheral wall 4a with the connecting rib 4d. It is preferable to constitute so as to reinforce 4a. In the present embodiment, an example in which inclined surfaces 4c1 are formed at both ends of the four short side ribs 4c is shown. It can also comprise so that the inclination notch part D formed in such a fitting block part 4 may not be formed.
[0014]
In addition, a skirt portion 5 is formed on the long side 1c of the bottom portion 1 so as to be perpendicular to the back surface of the bottom portion 1 and formed as a substantially horizontally long belt-like plate material. The skirt portion 5 is formed over substantially the entire length of the long side 1c other than both end portions of the long side 1c, and the outer surface of the skirt portion 5 is substantially flush with the outer surface of the long side bank portion 1a. It is configured as follows. Furthermore, the lower end of the skirt portion 5 is formed so as not to extend downward beyond the fitting block portion 4, and at both ends of the skirt portion 5 toward the frame-shaped region 1 e, An inclined portion 5a inclined upward is formed. Furthermore, the portions other than the inclined portion 5a of the skirt portion 5 and the peripheral wall 4a of the fitting block portion 4 are connected by connecting ribs 6 arranged at predetermined intervals in order to increase the strength and rigidity of the skirt portion 5. Has been.
[0015]
At the lower end of the inclined portion 5a of the skirt portion 5 described above, a restriction projection 7 is formed by extending the skirt portion 5 downward, and the lower end of the restriction projection 7 exceeds the fitting block portion 4. Thus, it is formed so as not to extend downward.
[0016]
Next, the long side wall 2 and the short side wall 3 will be described with reference to FIGS. 1 and 2.
[0017]
The long side wall 2 has a horizontally-long substantially rectangular plate-like portion 2 a, and both vertical ends of the long side wall 2 are substantially perpendicular to the plate-like portion 2 a and in the direction of the inner wall surface of the long side wall 2. A vertically long engagement frame 2b is formed, and the engagement frame 2b has an appropriate number of fitting holes 2b1 substantially parallel to the plate-like portion 2a at a predetermined interval in the vertical direction. (In this embodiment, two fitting holes 2b1 are formed).
[0018]
A substantially U-shaped slit 2c is formed in the vicinity of the upper end corners of the plate-like portion 2a of the long side wall 2, and by forming the substantially U-shaped slit 2c, the slit 2c The enclosed portion is formed with a cantilever-shaped locking elastic piece 2d extending in the horizontal direction. A locking projection 2d1 protrudes from the tip on the inner surface side of the locking elastic piece 2d, and the engaging frame 2b side of the locking projection 2d1 is substantially parallel to the inner surface of the engaging frame 2b. It is formed on a vertical surface.
[0019]
An upper portion having a horizontal surface 2e1 substantially perpendicular to the plate-like portion 2a and an inclined surface 2e2 extending so as to incline downward from an outer edge of the horizontal surface 2e1 at the upper end of the plate-like portion 2a of the long side wall 2. A flange portion 2e is formed. Further, a lower end horizontal rib 2f substantially perpendicular to the plate-like portion 2a is formed at the lower end of the plate-like portion 2a of the long side wall 2, and the outer surface of the plate-like portion 2a (the folding container is assembled into a box shape). In this case, an appropriate number of vertical ribs 2g and horizontal ribs 2h are formed on the outer surface) as necessary.
[0020]
Long side wall side fitting bank portions 8 are provided at both ends of the upper side flange portion 2e of the long side wall 2 in the longitudinal direction so as to protrude above the upper flange portion 2e. 8 has a horizontal upper surface 8a and an inclined side surface 8b inclined downward toward the horizontal surface 2e1 of the upper flange portion 2e. In the present embodiment, the upper portion of the engagement frame 2b described above is connected to the long side wall fitting bank portion 8.
[0021]
The short side wall 3 has a horizontally-long substantially rectangular plate-like portion 3a, and upper and lower horizontal ribs that are substantially perpendicular to the plate-like portion 3a and extend outward at upper and lower ends of the plate-like portion 3a. 3b and a lower end horizontal rib 3c are formed respectively, and left and right ends of the plate-like portion 3a are end vertical ribs 3d that are substantially perpendicular to the plate-like portion 3a and extend outward. Is formed. A longitudinally extending extension frame 3e is formed outside the end vertical rib 3d, and an appropriate number of fitting protrusions 3e1 are formed along the end vertical rib 3d (this book). In the embodiment, two fitting protrusions 3e1 are formed corresponding to the two fitting holes 2b1 formed in the engagement frame 2b. The fitting protrusion 3e1 is configured to be inserted into the fitting hole 2b1 formed in the engagement frame 2b of the long side wall 2 described above. Furthermore, an appropriate number of vertical ribs 3f and horizontal ribs 3g are appropriately formed on the outer surface 3a1 of the plate-like portion 3a (the surface located outside when the folding container is assembled into a box shape) as necessary. Yes.
[0022]
Short side wall fitting banks 9 are provided at both ends in the longitudinal direction of the upper side horizontal ribs 3b of the short side walls 3 so as to protrude from the upper side horizontal ribs 3b. 9 has a horizontal upper surface 9a and an inclined side surface 9b inclined downward toward the upper end horizontal rib 3b. The short side wall side fitting bank portion 9 and the long side wall side fitting bank portion 8 described above are formed at the same height.
[0023]
In addition, the height (distance from the back surface of the bottom part 1 to the back surface of the fitting block part 4) of the fitting block part 4 suspended from the back surface of the bottom part 1 mentioned above is the long side wall side fitting bank part 8 and the short side. The side wall-side fitting bank portion 9 is formed at substantially the same height.
[0024]
When the folding container having the above-described configuration is stacked in a box-shaped state as shown in FIG. 6, the fitting block portion 4 of the bottom portion 1 of the folding container positioned above is stacked. Of the frame-like region 1e formed in the periphery, the corner portion 1e1 of the frame-like region 1e has an upper surface 8a and a short side wall of the long side wall-side fitting bank portion 8 formed on the long side wall 2 of the folding container located below. 3 is placed on the upper surface 9a of the short side wall-side fitting bank portion 9 formed in FIG. 3, and the vicinity of the corner of the peripheral wall 4a constituting the fitting block portion 4 of the bottom portion 1 of the folding container located above is So as to be close to the inner wall of the long side wall side fitting bank portion 8 formed on the long side wall 2 of the folding container and the inner wall of the short side wall side fitting bank portion 9 formed on the short side wall 3. Because it is configured Even if the folding container located is about to move in the horizontal direction, the peripheral wall 4a of the fitting block part 4 of the folding container located on the upper side is formed on the long side wall 2 of the folding container located on the lower side. Since the inner wall of the bank portion 8 and the inner wall of the short side wall-side fitting bank portion 9 formed on the short side wall 3 are in contact with each other, the folding container positioned above moves greatly relative to the folding container positioned below. Therefore, in a stable state, the upper folding container can be stacked against the lower folding container.
[0025]
Next, mainly referring to FIGS. 8 and 9, slide stacking between the folding containers assembled in a box shape will be described.
[0026]
A short side wall side fitting bank formed on one short side wall 3 of the folding container Cb located below the fitting block portion 4 located on the short side 1d side of the bottom part 1 of the folding container Ca located above. A horizontal surface of the upper flange portion 2e of the long side wall 2 of the folding container Cb positioned below the corner portion 1e1 of the frame-like region 1e of the folding container Ca positioned on the bottom portion 1 is placed on the upper surface 9a of the folding portion Ca. By being mounted on 2e1, as shown in FIG. 9, it protrudes from the lower end of the inclined part 5a of the skirt part 5 suspended along the long side 1c of the bottom part 1 of the folding container Ca located above. The regulated restricting projection 7 is arranged so as to be located close to the inclined surface 2e2 constituting the upper flange portion 2e of the long side wall 2 of the folding container Cb located below. Thereafter, the frame-like region 1e of the folding container Ca positioned above contacts the upper surface 8a of the horizontal plane 2e1 of the upper flange portion 2e of the long side wall 2 of the folding container Cb positioned below and slides upward. The folding container Ca located is slid relative to the folding container Cb located below.
[0027]
During the above-described slide stacking operation, when the long side wall 2 of the lower folding container Cb is going to bend outward due to the weight of the upper folding container Ca, the lower folding container Cb An inclined surface 2e2 constituting the upper flange portion 2e of the long side wall 2 is provided at the lower end of the inclined portion 5a of the skirt portion 5 suspended along the long side 1c of the bottom portion 1 of the folding container Ca positioned above. Since it is comprised so that it may contact | abut to the control protrusion 7, the bending deformation to the outer side of the long side wall 2 of the folding container Cb located below is prevented. Accordingly, the corner portion 1e1 of the frame-like region 1e of the bottom portion 1 of the folding container Ca positioned above is detached from the upper flange portion 2e of the long side wall 2 of the folding container Cb positioned below, and the folding container Ca positioned above. It is possible to prevent the front portion in the sliding direction of the bottom portion 1 from falling into the folding container Cb located below. Therefore, it is possible to reliably prevent the folding container Ca positioned above from falling into the folding container Cb positioned below and making slide stacking impossible during the slide stacking operation.
[0028]
In the final stage of slide stacking, corner portions 1e1 of the bottom 1 located at both ends of the short side wall 3 in the sliding direction forward of the folding container Ca positioned on the upper side are formed on the long side wall 2 of the folding container Cb positioned below. The horizontal upper surface 8a of the long side wall side fitting bank portion 8 and the horizontal upper surface 9a of the short side wall side fitting bank portion 9 that are located forward in the sliding direction through the inclined side surface 8b of the long side wall side fitting bank portion 8 that has been made. The corner portions 1e1 positioned at both ends of the short side wall 3 rearward in the sliding direction are also fitted to the horizontal upper surface 8a and the short side wall fitting of the long side wall fitting bank portion 8 positioned rearward in the sliding direction. It is placed on the horizontal upper surface 9a of the bank portion 9, and the slide stacking operation is completed.
[0029]
As described above, when slide stacking is performed, the restricting protrusion 7 protruding from the lower end of the inclined portion 5a of the skirt portion 5 that hangs down along the long side 1c of the bottom portion 1 of the folding container Ca positioned above is provided. Since the folding container Cb is positioned so as to be close to the inclined surface 2e2 constituting the upper flange portion 2e of the long side wall 2 of the folding container Cb, the operator visually confirms the folding container positioned above. Since it is possible to confirm whether or not the regulation protrusion 7 formed on the bottom 1 of Ca is located on the inclined surface 2e2 side of the upper flange portion 2e of the long side wall 2 of the folding container Cb located below, It is possible to reliably prevent the stacking from failing.
[0030]
Further, since the upper flange portion 2e of the long side wall 2 is not formed with a protrusion such as a rail protrusion unlike a conventional folding container, the rail protrusion essential for slide stacking may be damaged. In addition, the upper flange portion 2e of the long side wall 2 does not obstruct the loading and unloading of articles into the folding container assembled in a box shape.
[0031]
In addition, unlike the conventional folding container, the bottom portion 1 is not formed with a rail groove into which the rail protrusion projecting from the upper surface of the long side wall 2 is fitted, so that dust or the like accumulates in the rail groove. Further, the fitting of the rail protrusion into the rail groove is not hindered, and the cleaning property of the folding container is improved.
[0032]
Furthermore, as described above, the slide block stacking of the folding container assembled in a box shape by forming the inclined cutout portion D in the fitting block portion 4 located in the vicinity of both ends of the long side 1c of the bottom portion 1. Prior to the operation, the fitting block portion 4 positioned on the one short side 1d side of the bottom portion 1 of the folding container Ca positioned on the upper side is formed on one short side wall 3 of the folding container Cb positioned below. The frame-like region 1e of the bottom portion 1 of the folding container Ca positioned on the upper side 9a of the side wall-side fitting bank portion 9 is placed on the upper flange portion 2e of the long side wall 2 of the folding container Cb positioned below. By placing on the horizontal surface 2e1, it protrudes to the lower end of the inclined portion 5a of the skirt portion 5 suspended along the long side 1c of the bottom portion 1 of the folding container Ca located above. When the regulated protrusion 7 is disposed so as to be positioned close to the inclined surface 2e2 constituting the upper flange portion 2e of the long side wall 2 of the folding container Cb located below, the folding container Ca located above It is possible to prevent the portions located near both ends of the long side 1c of the bottom portion 1 of the fitting block portion 4 from coming into contact with the upper flange portion 2e of the long side wall 2 of the folding container Cb located below. Therefore, the workability of the slide stacking work is improved.
[0033]
The inclined surface 2e2 formed on the upper flange portion 2e of the long side wall 2 described above is affixed with a label printed with various information such as the name of the article and the destination stored in the folding container, It can also be engraved. By using the inclined surface 2e2 as a display unit, the operator can confirm the contents displayed on the display unit from above the folding container, and does not have to bother to go around the side of the long side wall 2 Therefore, workability such as confirmation of the display unit is improved.
[0034]
In the above-described embodiment, when folding the folding container assembled in a box shape, the short side wall 3 is first tilted, and then the long side wall 2 is tilted. The long side wall 2 is set up and then the short side wall 3 is set up. However, when the folding container assembled in a box shape is folded, the long side wall 2 is tilted first, and then the short side wall 3 is set up. Further, when assembling, the short side wall 3 can be raised first, and then the long side wall 2 can be raised.
[0035]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0036]
The operator visually confirms whether or not the restricting protrusion formed on the bottom of the folding container positioned above is located on the inclined surface side of the upper flange portion of the long side wall of the folding container positioned below. Therefore, it is possible to reliably prevent the slide stacking from failing.
[0037]
Further, unlike the conventional folding container, the upper flange portion of the long side wall is not formed with a protruding portion such as a rail protruding portion, so that the rail protruding portion essential for slide stacking is not damaged. In addition, the upper flange portion of the long side wall does not obstruct the loading / unloading of articles into / from the folding container assembled in a box shape.
[0038]
Furthermore, since the rail groove into which the rail protrusion protrudingly provided on the upper surface of the long side wall is fitted is not formed on the bottom, unlike the conventional folding container, such a rail is provided like the conventional folding container. Dust or the like accumulates in the groove, so that the fitting of the rail protrusion into the rail groove is not hindered, and the cleaning property of the 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 of the folding container according to the present invention during assembly or folding.
FIG. 3 is a perspective view showing a folded state of the folding container of the present invention.
FIG. 4 is a rear perspective view of the folding container of the present invention in a folded state.
FIG. 5 is a partially enlarged front view of the bottom of the folding container of the present invention.
FIG. 6 is a partially enlarged back view of the bottom of the folding container of the present invention.
FIG. 7 is a perspective view of a state in which a pair of folding containers assembled in a box shape of the present invention are stacked.
FIG. 8 is a perspective view for explaining slide stacking of a folding container assembled in a box shape according to the present invention.
FIG. 9 is a partial vertical cross-sectional view along the short side wall of FIG. 8;
[Explanation of symbols]
Ca, Cb ·························································································・ ・ ・ ・ ・ Bottom part 1a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side bank part 1b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short side bank part 1e ・ ・ ・········ Frame region 2 ··········· Long side wall 3 ·········· 4 ····································· 5 .... Control protrusion 7

Claims (1)

It has a bottom, opposing long side walls hinged to the bottom, and opposing short side walls similarly hinged to the bottom, and can be folded by tilting the long and short side walls so that they overlap the bottom In such a folding container, an upper flange portion having a horizontal surface and an inclined surface extending downward from an outer edge of the horizontal surface is formed on the long side wall, and a regulating protrusion is formed on the inclined portion of the skirt portion formed on the bottom portion. Folding container characterized by forming.

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