JP5969345B2 - Corrugated cushioning material - Google Patents

Description

  The present invention relates to a cardboard cushioning material used for protecting an end portion of an article that is long and easily damaged.

  For example, as a corrugated cardboard cushioning material used for boxing of bottles, in Patent Document 1 below, as shown in FIG. 8, an outer cylinder part 52 that forms a square tube body 51 having a double structure along the outer periphery of the bottle. In addition, the inner cylinder portion 53 and the end wall portion 54 that closes one end portion on the bottom side of the rectangular tube body 51 and receives the bottom portion of the bottle are described.

  In this cushioning material blank, as shown in FIG. 9, outer plates 52 a to 52 d and inner plates 53 a to 53 d serving as surfaces of the rectangular tube body 51, as parts constituting the outer cylinder portion 52 and the inner cylinder portion 53, respectively. Are connected via a ridgeline, and the outer plates 52a to 52d and the inner plates 53a to 53d are connected to each other via a frame plate 55 serving as an end portion on the opening side.

  A rectangular extraction window 56 is formed at the ridges of the outer plates 52a to 52d, and a kerf 57 is provided between the ridges of the inner plates 53a to 53d and the adjacent frame plate 55, and a ridge line is provided. The connecting portion 58 is left.

  An inner end plate 59, an intermediate end plate 60, and an outer end plate 61 are connected to the outer side plates 52 d, 52 b and 52 a on the opposite side of the frame plate 55, respectively. Are connected.

  When assembling the cushioning material from this blank, as shown in FIG. 10, in order to form the rectangular tube body 51, the outer tube portion 52 and the inner tube portion 53 are folded and folded along the ridgeline, 58 is fitted into the extraction window 56. And in order to form the end wall part 54, the inner end plate 59, the middle end plate 60, and the outer end plate 61 are folded in order, and the insertion piece 62 is inserted along the inner surface of the square cylinder 51.

Japanese Patent No. 4088806

  However, with the cushioning material as described above, when packing an article such as a lighting fixture that is elongated and easily damaged, the package is covered with the end portion of the article and the ridge portion of the rectangular tube body 51 and the end wall portion 54 When falling from the corner, the end wall 54 is deformed in the opening direction, and the article may not be sufficiently protected.

  SUMMARY OF THE INVENTION An object of the present invention is to reliably protect the end of a long and easily damaged article from a large impact caused by dropping or the like.

  In order to solve the above-mentioned problems, the present invention comprises an outer cylinder part and an inner cylinder part that form a rectangular tube body, an end wall part that closes one end, and an outer cylinder part and an inner cylinder part that are connected at an open end. In the corrugated cardboard cushioning material folded and folded along the ridgeline, in order to constitute the end wall portion, an end plate extending from the inner tube portion is formed by bending a portion extending from the outer tube portion. The inner end plate extending from the facing portion is overlapped on the inner side of the outer end wall, and the projecting piece provided on the inner cylindrical portion is engaged with the notch portion on the inner side of the outer end wall.

  With the corrugated cardboard cushioning material according to the present invention, when packing a long article, the package is covered from the ridges and corners of the rectangular tube body and the end wall during transportation with the end of the article covered from the opening side. When it falls, it is first buffered by the laminated structure of the end wall portion composed of the outer end wall and the inner end plate overlapping therewith.

  Next, the article is pulled and held in the direction opposite to the dropping direction by the air suspension structure of the inner end plate supported so as to be suspended.

  Furthermore, the engagement between the protruding piece of the inner plate and the cutout portion of the outer end wall improves the shape retention, prevents the cardboard from being broken at the bent part and losing the suspended structure, and the shock absorbing property of the article. Secured.

  With such a three-stage buffering effect, the impact acting on the article can be greatly reduced, and the end of the article that is long and easily damaged can be protected.

The figure which shows the blank of the cardboard cushioning material which concerns on this invention Plan view showing the assembly process Perspective view showing the assembly process Perspective view showing the assembly process The perspective view which shows an assembly state same as the above. Longitudinal side view The perspective view which shows the use condition same as the above The perspective view which shows the assembly state of the conventional cardboard cushioning material Figure showing the same blank as above Perspective view showing the assembly process

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

  This cardboard cushioning material is a blank as shown in FIG. 1 assembled in the shape shown in FIGS. 5 and 6, and an outer cylinder part 2 and an inner cylinder part 3 that overlap to form a rectangular tube 1. The end wall portion 4 that closes one end portion of the rectangular tube 1 is provided.

  In the blank shown in FIG. 1, the corrugated cardboard has a vertical direction, and the outer cylinder portion 2 and the inner cylinder portion 3 arranged in that direction are the outer plates 2 a to 2 d that serve as surfaces of the rectangular tube 1, respectively. In addition, the inner plates 3a to 3e are continuously provided in the horizontal direction via the ridgeline of the ruled line. The ridge line of the outer cylinder part 2 is a normal ruled line entered from the back side of the cardboard, and the ridge line of the inner cylinder part 3 is a reverse ruled line entered from the front side of the cardboard.

  In the outer cylinder portion 2, the outer plate 2b is sequentially arranged on one side of the outer plate 2a, and the outer plates 2c and 2d are sequentially arranged on the other side. In the inner cylinder portion 3, the inner plate 3b is arranged on one side of the inner plate 3a. The inner plates 3c to 3e are sequentially arranged on the side.

  The outer tube portion 2 and the inner tube portion 3 are connected portions sandwiched between two parallel notched lead rules at the abutting side outer plate 2a and inner plate 3a that are the open ends of the rectangular tube body 1. 5 are connected to each other and disconnected at other portions.

  In consideration of the laminated thickness of the corrugated cardboard of the end wall portion 4 in the assembled state, the longitudinal dimensions of the outer plates 2a to 2d are larger than the longitudinal dimensions of the corresponding inner plates 3a to 3d, respectively. In each dimension, a step is provided.

  Further, in consideration of the circumferential dimension difference at the time of bending due to the thickness of the cardboard, the lateral dimension of the outer plates 2a to 2d is larger than the lateral dimension of the corresponding inner plates 3a to 3d, respectively. A little bigger.

  On the other hand, on the side opposite to the abutting side of the outer tube portion 2 and the inner tube portion 3, the outer plates 2b and 2c of the outer tube portion 2 are respectively provided with folding pieces 6 and 7, respectively, The outer end plate 8, the frame plate 9 and the middle end plate 10 are successively provided, and the inner end plate 11 is provided continuously with the outer end plate 2d. An inner end plate 12 is connected to the inner plate 3 a of the inner cylinder portion 3.

  The inner plates 3b and 3c are provided with protrusions 13 near the inner end plate 12, and notches 14 are provided on both sides of the middle end plate 10 and the inner end plate 11 near the tip.

  The inner plate 3d is provided with a protrusion 15 from the end side. Further, the outer plate 2d is provided with a projection 16 by cutting into the inner end plate 11, and an engagement hole 17 is provided at the ridge portion of the frame plate 9 and the middle end plate 10. In addition, a finger hooking portion 18 by an arc-shaped cut is provided on the open side edge of the outer plate 2d for disassembly.

  In order to assemble the cushioning material from such a blank, first, as shown in FIG. 2, the connecting portion 5 is used as a hinge, the inner tube portion 3 is bent to the back side of the outer tube portion 2, and the outer tube portion 2 and the inner tube portion 3 is superposed.

  Next, as shown in FIG. 3, with reference to the overlapping outer plate 2a and inner plate 3a, both side portions of the outer tube portion 2 and the inner tube portion 3 are raised, the inner end plate 12 is erected, and the folded pieces 6, 7 is folded inward and overlapped, and the outer end plate 8, the frame plate 9 and the middle end plate 10 are bent so as to be wound.

  Subsequently, while the inner end plate 12 is once moved inward and retracted, the middle end plate 10 is inserted between the folding piece 7 and the inner end plate 12, and then the inner end plate 12 is restored and shown in FIG. Thus, the outer end wall 19 is formed in which the folded pieces 6 and 7 are sandwiched between the outer end plate 8 and the middle end plate 10. At this time, the projecting pieces 13 of the inner plates 3 b and 3 c engage with the cutout portions 14 of the outer end wall 19.

  Then, the inner plate 3e is bent along the inner surface of the inner plate 3b while the inner plates 3d and 3e are bent, the inner end plate 11 is bent from the outer plate 2d, and the inner end plate 10 is bent between the inner end plate 10 and the inner end plate 12. The plate 11 is inserted and bent so as to close the outer plate 2d.

  When assembled in this manner, as shown in FIGS. 5 and 6, the rectangular tube body 1 in which the outer tube portion 2 and the inner tube portion 3 overlap each other is formed, and the outer end plate 8, the folding pieces 6 and 7, and the middle end The cushioning material E in which the plate 10 and the inner end plates 11 and 12 are sequentially overlapped and the end wall portion 4 has a laminated structure of six layers is completed.

  In this assembled state, the projection 15 of the inner plate 3d is along the edge of the inner end plate 12, and the projection 16 of the outer plate 2d is fitted into the engagement hole 17 to maintain the assembled shape.

  For example, as shown in FIG. 7, when packing a long and narrow lighting fixture L like an LED lighting fixture for a fluorescent lamp, the buffer material E having a symmetrical shape is used. Then, the end of the lighting fixture L is covered from the opening side, and a cylindrical corrugated cardboard cushioning material M having both ends opened is wound around the middle portion of the lighting fixture L.

  When the symmetrical cushioning material E and the intermediate cushioning material M used in this packaging are connected to one cardboard via a score line with a connecting portion in the blank, the production efficiency is improved. Management during storage in the distribution process becomes easy. In addition, these cushioning materials E and M can be used for packing a plurality of types of lighting fixtures L having different lengths.

  In the cardboard cushioning material E as described above, when the package falls from the ridges or corners of the rectangular tube body 1 and the end wall 4 during transportation, first, between the outer end plate 8 and the middle end plate 10. It is buffered by a six-layered laminated structure of an end wall portion 4 comprising an outer end wall 19 sandwiching the folded pieces 6 and 7 and inner end plates 11 and 12 overlapping therewith.

  Next, the luminaire L is pulled and held in the direction opposite to the falling direction by the air suspension structure of the inner end plates 11 and 12 supported so as to be suspended from the outer cylinder portion 2.

  Further, the engagement between the projecting pieces 13 of the inner plates 3b and 3c and the cutout portions 14 of the outer end wall 19 improves the shape retention, and the projecting pieces 13 that are longitudinally excellent in strength due to the nature of the cardboard. Combined with the contact with the folding piece 7, the situation where the corrugated cardboard is broken at the bent portion and the suspended structure is lost is prevented, buffering is ensured, and the end of the luminaire L which is easily damaged is surely secured. Protected.

  In addition, in the said embodiment, since the thick corrugated cardboard was used as a material, what connected the outer cylinder part 2 and the inner cylinder part 3 only in one place so that it could be bent irrespective of the dimension difference of the circumferential direction was illustrated. However, when the cardboard is thin, the dimensional difference in the circumferential direction can be absorbed by the collapse of the cardboard. Therefore, the outer tube portion 2 and the inner tube portion are excluded except for the corner portion on the opening side of the rectangular tube body 1. 3 may be connected as a whole.

  Further, while the protruding piece 13 is provided close to one side of the end sides of the inner plates 3b, 3c, and the notch portions 14 are provided near the tips of both sides of the middle end plate 10 and the inner end plate 11, the protruding pieces 13 and The cutouts 14 may be provided in the middle part of the end sides of the inner plates 3b and 3c and in the middle part of both sides of the middle end plate 10 and the inner end plate 11, respectively.

  In addition, the rectangular tube portion 1 is exemplified as a rectangular tube portion, but the rectangular tube portion 1 is formed from a plurality of surfaces obtained by bending the outer plates 2b and 2c and the inner plates 3c and 3d, respectively, and has a hexagonal tube shape. Alternatively, it may be an octagonal cylinder.

DESCRIPTION OF SYMBOLS 1 Square cylinder 2 Outer cylinder part 2a-2d Outer board 3 Inner cylinder part 3a-3e Inner board 4 End wall part 5 Connection part 6, 7 Folding piece 8 Outer end plate 9 Frame plate 10 Middle end plate 11, 12 Inner end Plate 13 Projection piece 14 Notch portion 15, 16 Protrusion 17 Engagement hole 18 Finger hook portion 19 Outer end wall E, M Buffer material L Lighting fixture

Claims (1)

The outer tube portion (2) and the inner tube portion (3) forming the rectangular tube body (1), and the end wall portion (4) closing one end, and the inner tube portion (2) and the inner tube connected at the open end In the corrugated cardboard cushioning material folded over and folded along the ridge line with the cylindrical portion (3), the end wall portion (4) is constituted by bending a portion extending from the outer cylindrical portion (2) to form an outer end wall ( 19) and an inner end plate (12) extending from the inner cylindrical portion (3), and an inner end plate (11) extending from the opposing portion of the base ridge line of the inner end plate (12) in the square cylindrical body (1). ) And the projecting piece (13) provided on the inner cylinder part (3) is engaged with the notch part (14) on the inner side of the outer end wall (19). A cardboard cushioning material.

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