JP5053886B2 - Simple assembly type cardboard box - Google Patents

Description

  The present invention relates to a cardboard box that can be easily assembled from a flat state during use.

  Conventionally, as a corrugated cardboard box that can be easily assembled, the following Patent Document 1 discloses a cardboard box as shown in FIGS.

  As shown in FIG. 4, this cardboard box blank has a pair of side plates 52 and end plates 53 connected around the bottom plate 51, and folded pieces 54 at both ends of the side plates 52, at the end of the end plate 53. The inner end plate 55 is connected to each other, and the folding piece 54 is provided with a diagonal fold line 56 extending away from the corner side of the bottom plate 51, and a kerf is interposed between the folding piece 54 and the end plate 53. Has been.

  When this blank is provided to the user of the cardboard box, a portion located on the end plate 53 side from the oblique line 56 of the folding piece 54 is coated with a hot melt adhesive on the glued portion 57, and the side plate 52 is It is affixed to the inner surface of the end plate 53 by bending inward and overlapping the bottom plate 51.

  When the cardboard box is assembled and used, as shown in FIG. 5, the pair of end plates 53 are erected, and the folding piece 54 is folded in two along the oblique fold line 56. The side plate 52 is erected, and then the inner end plate 55 is bent inward and downward, and the folded piece 54 is sandwiched between the end plate 53 and the inner end plate 55 to retain the shape.

Japanese Utility Model Publication No. 5-16619

  However, in the corrugated cardboard box as described above, due to the presence of the kerf between the folded piece 54 and the end plate 53, a punching defect or a misalignment of the sticking position during manufacturing is likely to occur.

  As a countermeasure, when the folded piece 54 and the end plate 53 are connected via a ruled line, the end plate 53 and the side plate 52 are less likely to be raised at the time of assembly due to repulsion at the boundary portion. There is a problem that 53 tends to incline outward and the inner end plate 55 tends to protrude inward, thereby impairing shape retention.

  Accordingly, an object of the present invention is to provide a cardboard box that is easy to assemble, has excellent shape retention, and exhibits a good appearance.

In order to solve the above-described problems, the present invention is configured such that a pair of side plates and end plates are connected around the bottom plate, side edges of the side plates and the end plates are connected by folding pieces, and an inner end plate is attached to the upper end of the end plate. A diagonal line extending from the corner of the bottom plate is provided on the folded piece, a portion located on the end plate side of the folded piece is attached to the inner surface of the end plate, and the folded piece is folded in two along the oblique line. In a simple assembly type cardboard box sandwiched between the end plate and the inner end plate, the overlapping portion of the folded piece and the end plate is crushed in the thickness direction, and the fold line and the cut line are intermittent The top end of the lid plate connected to the upper end of the one side plate overlaps the lid receiving piece provided to the upper end of the other side plate so that the top surface is closed. Crush the overlapping part in the thickness direction, and crush the crushing part which is the overlapping part of the folded piece and the end plate And weaker than crushing the crushable portion is a portion overlapping lid receiving piece and the cover plate is the crushed portion of the former is prevented from becoming thinner latter crushing unit.

In the corrugated cardboard box according to the present invention, the repulsion of the crease at the boundary portion is suppressed by crushing the folded piece and the end plate provided with the oblique lines of the lead ruled lines, so that the end plate and the side plate are easily raised and assembled. In the assembled state, the end plate and the inner end plate are almost upright, and the appearance is excellent.

  Further, the crushing of the lid receiving piece and the lid plate suppresses the lifting of the tip end portion of the lid plate, so that the appearance impression is improved and the stability during loading is also improved.

  Furthermore, if the crushing of the folded piece and the end plate is made weaker than the crushing of the lid receiving piece and the lid plate so that the former does not become as thin as the latter, the folded piece is predetermined when assembling using the box making machine. Phenomenon that bending and box-making defects occur at locations other than is prevented.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  This cardboard box is used for transporting cut flowers, and is formed from a blank as shown in FIG. In this blank, a pair of side plates 2 are connected to the long side of the rectangular bottom plate 1, and a pair of end plates 3 are connected to the short side, and the side edges of the side plate 2 and the end plate 3 are connected by a folding piece 4. . An inner end plate 6 is connected to the end of the end plate 3 via a frame 5, a cover plate 7 is connected to the end of one side plate 2, and a cover receiving piece 8 is connected to the end of the other side plate 2. Has been.

  The folding piece 4 is provided with a diagonal fold line 9 extending in a direction away from the corner side of the bottom plate 1, and the diagonal fold line 9 is a lead rule where the crease and cut are intermittent.

  An engagement protrusion 6 a is provided at the tip of the inner end plate 6, and an engagement hole 1 a is provided at both ends of the bottom plate 1 along the boundary with the end plate 3. The inner end plate 6 is provided with finger holes 6b for disassembly. Two engaging projections 2 a are provided at the tip of the side plate 2 by cutting into the lid receiving piece 8, and two engaging recesses 7 a are provided at the tip of the lid plate 7.

  The entire folding piece 4 and the portion that overlaps the folding piece 4 when the end plate 3 is assembled are crushed in the thickness direction to form a crushed portion A, the tip of the lid plate 7, and the lid receiving piece 8. Is also crushed in the thickness direction to form a crushed portion B. Further, the portion facing the inside of the engagement hole 1a of the bottom plate 1 is also crushed in the same manner as the crushing portion A in order to reduce the resistance of the engagement protrusion 6a during assembly.

  Here, the crushing of the crushing part A is weaker than the crushing of the crushing part B so that the crushing part A is not as thin as the crushing part B. Thereby, in the crushing part A, the center of the corrugated cardboard is not completely crushed, and a certain resistance against bending is ensured.

  When providing such a blank to the user of the cardboard box, as shown in FIG. 2, the pair of side plates 2 are folded inward without folding the cover plate 7 with respect to the side plate 2 connected to the base end. The portion located on the end plate 3 side of the folding piece 4 is pasted on the inner surface of the end plate 3 with a hot melt adhesive. In this state, it can be transported and stored without being bulky.

  On the other hand, when the cardboard box is assembled and used, as shown in FIG. 3, the pair of end plates 3 are erected and the folding piece 4 is folded in two along the oblique fold line 9. The side plate 2 is erected, and then the frame 5 is bent inwardly in the horizontal direction, the inner end plate 6 is bent downward, the folding piece 4 is sandwiched between the end plate 3 and the inner end plate 6, and the engagement protrusion 6 a is engaged. When engaged with the hole 1a, the cardboard box is held in the assembled state.

  Then, the cut flowers are housed in the box, the lid receiving piece 8 is bent inwardly in the horizontal direction, the lid plate 7 is closed, and the engagement protrusion 2a is engaged with the engagement recess 7a to seal it. And the lower side plate 2 are prevented from shifting, and shape retention is improved.

In the corrugated cardboard box as described above, the overlapping portion of the folding piece 4 provided with the oblique line 9 of the lead ruler and the end plate 3 is crushed in the thickness direction to form the crushed portion A. The repulsion of the eyes is suppressed, the end plate 3 and the side plate 2 can be easily raised and assembled, and the end plate 3 and the inner end plate 6 are almost upright in the assembled state, and the appearance is excellent in appearance.

  Further, since the overlapping portion of the lid receiving piece 8 and the lid plate 7 is also crushed in the thickness direction to form the crushed portion B, the lid plate 7 is in a horizontal state without the tip side of the lid plate 7 being lifted, In addition to improving the impression of appearance, the stability during loading is also improved.

  Furthermore, since the crushing of the crushing part A is weaker than the crushing of the crushing part B so that the former is not as thin as the latter, when the folding piece 4 is assembled using the box making machine, Phenomenon that bending and box making defects occur at places other than the predetermined position is prevented.

  In the above-described embodiment, the top plate is closed by the lid plate 7. However, the lid plate 7 and the lid receiving piece 8 may be omitted, and a tray with the top surface opened may be used.

The figure which shows the blank of the simple assembly type cardboard box which concerns on this invention The perspective view which shows the folding pasting state same as the above The perspective view which shows an assembly open state same as the above The figure which shows the blank of the conventional simple assembly type cardboard box Perspective view showing the assembly process

DESCRIPTION OF SYMBOLS 1 Bottom plate 1a Engagement hole 2 Side plate 2a Engagement protrusion 3 End plate 4 Folding piece 5 Frame 6 Inner end plate 6a Engagement protrusion 6b Finger hole 7 Lid plate 7a Engagement recessed part 8 Lid receiving piece 9 Oblique folding line A, B Crush Part

Claims (1)

A pair of side plates (2) and end plates (3) are connected around the bottom plate (1), and the side plates (2) and end plates (3) are connected to each other by folding pieces (4). The inner end plate (6) is connected to the upper end of (3), the diagonal line (9) extending from the corner of the bottom plate (1) is provided on the folding piece (4), and the diagonal line (9) of the folding piece (4) The part located closer to the end plate (3) is attached to the inner surface of the end plate (3), the folding piece (4) is folded in half along the diagonal line (9), and the end plate (3) and the inner end plate In the simple assembly type cardboard box sandwiched between (6), the overlapping portion of the folding piece (4) and the end plate (3) is crushed in the thickness direction, and the oblique line (9) of the folding piece (4) is A lead ruler in which the creases and cuts are intermittent, and the tip of the lid plate (7) connected to the upper end of the one side plate (2) is connected to the upper end of the other side plate (2). The top surface of the lid (8) and the lid plate (7) are closed in a direction overlapping the piece (8) and crushed in the thickness direction, and the folded piece (4) and the end plate (3) Overlapping part The crushing of the crushing part (A) is made weaker than crushing of the crushing part (B), which is the overlapping part of the lid receiving piece (8) and the cover plate (7), and the former crushing part A simple assembly type cardboard box characterized in that (A) is not as thin as the latter crushing part (B) .

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