JP3123142U - Packaging box - Google Patents

Abstract

Even when a lateral force is applied or a large load is applied depending on the contents, packaging boxes stacked in a number of stages are maintained in a stably superposed state.
An auxiliary side plate 19 is connected to an upper edge of a long side plate 13 via a pair of fold lines 17 and 18, and from an intermediate position of the auxiliary side plate 19 to the pair of fold lines 17 and 18. A pair of incisions 20 parallel to each other in the longitudinal direction are formed, and when the auxiliary side plate 19 is folded inside the long side plate 13, the fold line 21 between the fold lines 17 and 18 and the cut 20 A bulge line 22 that connects the ends of the ridges forms a protrusion 40 having a V-shaped cross section protruding above the long side plate 13 and the auxiliary side plate 19, and the wrapping boxes are stacked in layers. Then, it is engaged with the engagement hole 14 of the bottom plate 11 of the upper packaging box.
[Selection] Figure 8

Description

  The present invention relates to a packaging box, and more particularly, to a substantially rectangular parallelepiped packaging box having an open top.

  Packaging boxes made of corrugated cardboard and paperboard are widely used to store various articles for distribution. For example, when supplying vegetables, fruits, etc., a packaging box is used in which the upper part of a predetermined size for containing vegetables or fruits is opened.

When stacking such packaging boxes in layers, in order to prevent lateral displacement of the upper and lower packaging boxes, it is possible to form a protruding piece on the upper edge of the side plate, Japanese Patent Application Laid-Open No. 2002-12214, JP-A-2002-53127, JP-A-2004-345668, and the like. However, this type of conventional mechanism for preventing lateral displacement is simply a projecting piece connected to the upper edge of the side plate. When a large force is applied from the side or when packaging boxes are stacked in layers. In the case where a large load is received from above, the above-mentioned protruding piece cannot withstand this load, and the protruding piece is bent or crushed, thereby losing the positioning function.
JP 2002-12214 A JP 2002-53127 A JP 2004-345668 A

  The subject of this invention is providing the packaging box which was not mutually shifted | deviated to the horizontal direction, when it piled up in many steps.

  Another object of the present invention is to provide a packaging box having positioning means that does not cause lateral displacement even when a large force is applied in the lateral direction.

  Still another object of the present invention is to provide a packaging box in which the positioning means does not lose its function due to deformation or the like even when a large load is applied when stacked in many stages.

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention described below and the embodiments thereof.

The main idea of the present application is a substantially rectangular parallelepiped packaging box whose upper part is an opening.
Auxiliary side plates are continuously provided on the inner side through two parallel folding lines formed at predetermined intervals at the upper ends of a pair of side plates facing each other,
In addition, a pair of longitudinal cuts parallel to each other are formed in the auxiliary side plate from an intermediate position to a position intersecting with the two fold lines on the upper edge, and the cuts are connected at an intermediate position between the two fold lines. Forming a fold line in the lateral direction so that the portion between the pair of cuts is bent at the fold line to form a protrusion having a height approximately half the distance between the two fold lines. The present invention relates to a packaging box characterized by forming and engaging the protrusion with an engagement hole at the bottom of the upper box.

  Here, the protrusion may have a substantially inverted V-shaped cross-sectional shape. The engagement hole may be formed in a corner portion of the pair of side plates and the bottom plate corresponding to the protrusion. Two protrusions may be formed on each of the pair of side plates facing each other. An auxiliary side plate is connected to the inside of the long side plate via two fold lines that are substantially parallel to each other, and two long side plates are provided across each of the two fold lines. Each protrusion may be formed.

  The main idea of the present application is that, in an approximately rectangular parallelepiped packaging box having an opening at the top, two parallel folding lines formed at a predetermined interval are formed at the upper ends of a pair of side plates facing each other. A pair of longitudinal cuts parallel to each other are formed from the intermediate position to a position intersecting with the two folding lines on the upper edge, and two folding lines are formed. A lateral fold line is formed so as to connect the cuts at an intermediate position of the line, and a portion between the pair of cuts is bent at the fold line so as to be approximately half of the distance between the two fold lines. A protrusion having a height is formed, and the protrusion is engaged with the engagement hole at the bottom of the upper box.

  Therefore, according to such a packaging box, the packaging boxes stacked in the vertical direction are positioned laterally with respect to each other by the projecting portions protruding at the two folding line portions for connecting the auxiliary side plate to the inside of the side plate. This makes it possible to place the packaging box stably when stacked in many layers. In addition, since the protrusion is doubled by the side plate and the auxiliary side plate, it can withstand a large load, and when a large force is applied in the lateral direction, or a large load is accumulated by many steps. Even if added, the positioning function is not lost.

  The present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows a corrugated base paper 10 punched out for assembling the packaging box of the present embodiment. This cardboard base paper 10 is provided with a rectangular bottom plate 11 at a substantially central portion thereof, and a long side plate 13 is connected to a long side of the rectangular bottom plate 11 facing each other via a folding line 12. A pair of engagement holes 14 are formed for each side plate 13 in the corner portion of the long side plate 13 and the bottom plate 11.

  An auxiliary side plate 19 is connected to the upper end side of the long side plate 13 via two parallel fold lines 17 and 18 formed at a predetermined interval from each other. A pair of cuts 20 parallel to each other in the height direction are formed in the auxiliary side plate 19 from an intermediate position in the height direction to the upper part. A fold line 21 is formed at the upper end side of the cut 10 and at an intermediate position between the pair of fold lines 17 and 18. A fold line 22 is formed so as to connect the lower ends of the notches 20. Further, in the vicinity of both ends of the side plate 13, a rectangular locking hole 23 is formed between the pair of fold lines 17 and 18, and a pair of circular holes 24 are formed in the long side plate 13 and the auxiliary side plate 19, respectively. , 25 are formed.

  On the other hand, a short side plate 28 is formed on the short side of the bottom plate 11 via a fold line 27. A support plate 30 is constructed at the upper end of the short side plate 28 via a fold line 29. Then, fan-shaped claws 32 are formed at both ends of the support plate 30 via folding lines 31. The claw 32 is inserted into the locking hole 23 described above.

  Further, flaps 36 are formed on both sides of the long side plate 13 via folding lines 35 so as to be incorporated inside the short side plate 28. Further, auxiliary flaps 38 are continuously provided on both sides of the auxiliary side plate 19 inside the long side plate 13 via a fold line 37.

  Next, an operation of assembling a packaging box using the corrugated cardboard 10 having the above configuration will be described. As shown in FIG. 2, first, the long side plate 13 is bent at a right angle with respect to the bottom plate 11 by a fold line 12. Then, the auxiliary side plate 19 is pushed into the long side plate 13 by bending the pair of fold lines 17 and 18 at the upper edge of the long side plate 13 at right angles. At this time, the circular hole 24 of the long side plate 13 and the circular hole 25 of the auxiliary side plate 19 are substantially aligned with each other.

  When the auxiliary side plate 19 is folded inside the long side plate 13 as described above, the pair of cuts 20 formed in the auxiliary side plate 19 are bent into an inverted V shape by the fold line 21. At this time, the lower end portion of the cut 20 is bent by the fold line 21 (see FIGS. 7 and 8).

  Thereafter, as shown in FIG. 3, the auxiliary flaps 38 on both sides of the auxiliary side plate 19 are bent at right angles at the folding line 37. Further, the flaps 36 at both ends of the long side plate 13 are folded at a right angle by a folding line 35 and overlapped with the auxiliary flap 38.

  Thereafter, as shown in FIG. 4, the short side plate 28 is bent at a right angle at the folding line 27 with respect to the bottom plate 11. Further, the fold line 29 at the upper end of the short side plate 28 is bent at a right angle so that the support plate 30 is bent substantially parallel to the upper edge of the packaging box as shown in FIG. The fan-shaped claws 32 at both ends of the support plate 30 are bent at the folding line 31 to be inserted into the locking holes 23 of the long side plate 13 and locked. As a result, both ends in the longitudinal direction of the upper surface are respectively covered with the support plate 30, and for this purpose, the support plate 30 can support the bottom surface of the packaging box stacked thereon.

  In such a packaging box, as particularly shown in FIG. 6, a protrusion 40 formed so as to protrude above the long side plate 13 and the auxiliary plate 19 is locked in the locking hole 14 of the bottom plate 11. It becomes like this. That is, when the packaging boxes are stacked in many stages, the protrusions 40 protruding from the upper part of the lower packaging box are engaged with the engagement holes 14 of the bottom plate 11 of the upper packaging box, As a result, the packaging boxes stacked in many stages are stably supported.

  As shown in FIGS. 7 and 8, the protrusion 40 formed between the long side plate 13 and the auxiliary side plate 19 is bent at a fold line 21 in a substantially inverted V-shaped cross section. The protrusion 40 protrudes by a height that is approximately half the distance between the fold lines 17 and 18. Therefore, it is possible to receive a large lateral force by the protrusion 40 having such an inverted V-shaped cross section and being folded twice, and for this reason, a large force is applied in the lateral direction. However, the stacked packaging boxes will not collapse. Further, when fruits, vegetables, and the like are placed in this packaging box and stacked in layers, even if a large load is applied, the protrusion 40 does not deform and lose its positioning function.

  As shown in FIG. 1, the locking holes 23 for receiving the fan-shaped claws 32 on both sides of the support plate 30 are cut downward in the auxiliary side plate 19, and the fan-shaped claws 32 are arranged in the thickness direction. It is cut by the minute. Therefore, as shown in FIG. 5, the support plate 30 has a height substantially matching the upper surfaces of the long side plate 13 and the auxiliary side plate 19 on the upper surface of the box, and the support plate 30 does not protrude upward. For this reason, the thickness of the support plate 30 does not impair the positioning by the protrusions 40, and stable engagement between the protrusions 40 and the engagement holes 14 can be ensured.

  Such a packaging box is a packaging box suitable for carrying fruits such as figs or vegetables such as tomatoes and peppers for distribution. In addition, it does not necessarily prevent storing other articles other than fruits and vegetables.

  While the present invention has been described with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention. For example, by shifting the fold line 21 between the notches 20 for forming the protrusion 40, the protruding direction of the protrusion 40 can be finely adjusted inward or outward, and the fold line is not necessarily at the position shown in the figure. 21 need not be formed.

  The present invention can be used for a packaging box for storing and shipping fruits and vegetables.

It is an expansion | deployment top view of the corrugated cardboard which assembles a packaging box. It is a perspective view which shows the operation | movement of the assembly of the corrugated board base paper. It is a perspective view which shows the operation | movement of the assembly of the corrugated board base paper. It is a perspective view which shows the operation | movement of the assembly of the corrugated board base paper. It is an external appearance perspective view of the assembled packaging box. It is a longitudinal cross-sectional view when this packaging box is stacked in many steps. It is a principal part perspective view of the protrusion formed in the part of a long side side plate and an auxiliary side plate. It is an expanded longitudinal cross-sectional view of the protrusion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Corrugated cardboard 11 Bottom plate 12 Folding line 13 Long side side plate 14 Engagement hole 17, 18 Folding line 19 Auxiliary side plate 20 Notch 21, 22 Folding line 23 Locking hole 24, 25 Circular hole 27 Folding line 28 Short Side side plate 29 Folding line 30 Support plate 31 Folding line 32 Fan-shaped claw 35 Folding line 36 Flap 37 Bending line 38 Auxiliary flap 40 Projection

Claims (5)

In an almost rectangular parallelepiped packaging box with an open top,
Auxiliary side plates are continuously provided on the inner side through two parallel folding lines formed at predetermined intervals at the upper ends of a pair of side plates facing each other,
In addition, a pair of longitudinal cuts parallel to each other are formed in the auxiliary side plate from an intermediate position to a position intersecting with the two fold lines on the upper edge, and the cuts are connected at an intermediate position between the two fold lines. Forming a fold line in the horizontal direction so that the portion between the pair of cuts is bent at the fold line to form a protrusion having a height approximately half the distance between the two fold lines. A packaging box comprising: forming and engaging the protrusion with an engagement hole at the bottom of the upper box.   The packaging box according to claim 1, wherein the protrusion has a substantially inverted V-shaped cross-sectional shape.   The packaging box according to claim 1, wherein the engagement hole is formed at a corner portion of the pair of side plates and the bottom plate corresponding to the protrusion.   The packaging box according to claim 1, wherein two protrusions are formed on each of the pair of side plates facing each other. An auxiliary side plate is connected to the inside of the long side plate via two fold lines that are substantially parallel to each other, and two long side plates are provided so as to cross the two fold lines. The packaging box according to claim 1, wherein a protrusion is formed.

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