JP6223731B2 - Cardboard tray - Google Patents

Description

The present invention relates to a tray that is assembled using corrugated cardboard as a material and is used for transportation and storage of articles.

  For example, corrugated trays used for transporting agricultural products are delivered to an agricultural product accumulation base in a flat blank state, assembled at the accumulation base, and after the agricultural products are stored, they are shipped to a market or the like. As a tray for facilitating the assembly work in the shipping work, the following Patent Document 1 proposes a tray as shown in FIG.

  In this tray, a side wall 52 and an end wall 53 are connected to each other around the bottom wall 51 with a corner portion interposed therebetween. The end wall 53 is formed by double end plates 54 and 55 and an end top plate 56. A holding wall 57 is connected to the side end, and the holding wall 57 is formed by double holding plates 58 and 59 and a holding plate 60 extending from the end plates 54 and 55 and the end top plate 56, respectively. The holding wall 57 is bent so as to be wound together and bent so as to form a corner portion, and the end portion of the side wall 52 is sandwiched between the holding plates 58 and 59 of the holding wall 57.

  In the tray, a locking claw 61 is formed in the holding wall 57 by making a notch extending over the holding plates 58 and 59 and the crest plate 60, and the locking claw 61 has an intermediate portion in the width direction of the couch plate 60. A crease is formed at a position corresponding to the end of the holding plate 59 side. Further, the side wall 52 is formed with a locking step portion 62a whose upper end portion is cut out and the end portion side becomes higher.

  Then, when assembling, the holding wall 57 has a double structure, and when it is bent so as to be wound, the locking claw 61 is bent into a mountain shape, and then the end wall 53 and the holding wall 57 are bent, In the process of sandwiching the end portion of the side wall 52 between 58 and 59, when the end wall 53 is raised, the end edge on the end wall 53 side of the locking claw 61 and the end edge of the locking step portion 62a abut. The side wall 52 and the end wall 53 are kept upright.

JP 2011-1111176 A

  However, in the tray as described above, when the engagement between the locking claw 61 and the locking stepped portion 62a is insufficient, when the article is loaded and transported, if the end wall 53 is gripped and lifted, the end wall There is a possibility that 53 falls to the outside with respect to the bottom wall 51 and the article falls.

  In view of the above, an object of the present invention is to reliably maintain the standing state of the side wall and the end wall by a simple operation.

In order to solve the above-mentioned problems, the present invention is such that a side wall and an end wall are connected around a corner portion around a bottom wall, the end wall is formed by a double end plate and an end top plate, and a side edge of the end wall is formed. A holding wall is connected to the end wall and the holding wall is formed by a double holding plate and a top plate extending from the end plate and the end top plate, respectively, and the notch straddling the inner holding plate and the top plate on the holding wall To form a latching claw that bends in a chevron along the crease, forms a latching step with the upper end notched on the side wall, and is held by the end wall. Bending the wall together, bending it to form a corner, sandwiching the end of the side wall between the holding plates of the holding wall, and erecting the end wall, the end on the end wall side of the locking claw engaged by edge and the end edge of the locking stepped portion abuts, in cardboard trays standing state of the side and end walls are maintained Confirmation for confirming the engagement between the edge of the latching claw and the edge of the latching step so as to face the edge of the latching claw on the side of the latch wall from the inner wall of the holding wall to the crown A window was provided , and the confirmation window was opened in a fan shape with the locking claw as one side of the radius and the crest plate as the other side of the radius .

In the corrugated tray according to the present invention, it is possible to confirm at a glance whether the end edge of the engaging claw and the end edge of the engaging step portion are engaged with each other through the confirmation window when assembling. Therefore, when the engagement is insufficient, the holding wall can be pushed down to ensure the engagement, and the end wall can be prevented from falling down during transportation, and the article can be placed in a firmly held state. Can carry.

The figure which shows the blank of the cardboard tray which concerns on embodiment of this invention Perspective view showing the assembly process The perspective view which shows an assembly state same as the above. The expanded perspective view which shows the lock part of a side wall and an end wall same as the above Sectional view along line VV in FIG. The perspective view which shows the stacked state same as the above The perspective view which shows the assembly state of the conventional cardboard tray

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

  This tray is formed from a cardboard blank as shown in FIG. In this blank, among each side around the rectangular bottom wall 1, a side wall 2 is connected to a pair of long sides, and an end wall 3 is connected to the other pair of short sides, and the end wall 3 is a bottom wall. It is formed by end plates 4 and 5 arranged sequentially from one side and an end top plate 6 sandwiched therebetween.

  A holding wall 7 is connected to the side end of the end wall 3, and the holding wall 7 extends from each of the end plates 4, 5 and the end top plate 6 and is connected to each other. It is formed by. The corner edge, which is the lower side when the holding plate 9 is assembled, is cut in an arc shape in order to avoid interference with the end of the side wall 2 during assembly.

  The retaining wall 7 has a notch 11 formed by making a notch extending over the retaining plate 9 and the retaining plate 10, and the retaining nail 11 has a position corresponding to an intermediate portion in the width direction of the retaining plate 10 and A crease is formed at the end on the side of the holding plate 9.

  The end edge on the end wall 3 side of the locking claw 11 is inclined in a direction in which the crest plate 10 side is separated from the end wall 3, and is confirmed to be fan-shaped from the couch plate 9 to the crest plate 10 so as to face this end edge. A window 12 is provided.

  The side wall 2 is formed with a locking step portion 2a that is notched at both ends of the end edge that becomes the upper end during assembly and becomes higher at the end side. The end edge of the locking step portion 2a approaches the upper end side during assembly. It is inclined so that it may come out. In order to avoid interference with the holding plate 9 during assembly, both side edges of the side wall 2 are cut in an arc shape, and a convex portion 2 b is provided at an intermediate portion of the end edge serving as the upper end of the side wall 2.

  At the boundary between the end plate 5 and the holding plate 9, a crease line that is mountain-folded is put on both sides of the fold line that is folded at the valley, and when the holding wall 7 is bent from the end wall 3, In order to reduce bending resistance, an escape hole 13 is provided.

  In addition, an insertion piece 14 having a tapered width extending from the distal end side to the base side and having recesses on both sides of the base portion is provided at the edge that becomes the lower end when the front end portion of the holding plate 8 is assembled. An insertion hole 15 is provided in the ridge portion of the side wall 2 corresponding to the insertion piece 14.

  To assemble such a blank, as shown in FIG. 2, the side wall 2 is erected from the bottom wall 1, and the end wall 3 is wound in such a direction that the end plate 4 is on the outside and the end plate 5 is on the inside. In addition to bending, the holding wall 7 is bent so that the holding plate 8 is on the outside and the holding plate 9 is on the inside.

  When the end wall 3 and the holding wall 7 having a double structure are formed by bending in this way, the folds at the boundary between the top plate 10 and the top plates 8 and 9 and the intermediate portion in the width direction of the top plate 10 are positioned. The latching claw 11 bends in a mountain shape due to the deviation of the latching claw 11 from the fold.

  Next, the end wall 3 and the holding wall 7 are bent so as to form a corner portion, the end wall 3 is erected from the bottom wall 1, and the side wall is interposed between the holding plates 8 and 9 of the holding wall 7. Insert the end of 2.

  Then, as shown in FIGS. 3 to 5, when the end wall 3 is erected, the end edge on the end wall 3 side of the locking claw 11 and the end edge of the locking step portion 2a are brought into contact with each other to engage with each other. In addition, due to the inclination of these end edges, the end edges mesh with each other so that the side walls 2 and the end walls 3 are locked, and the side walls 2 and the end walls 3 are maintained upright.

  At this time, the end edge on the end wall 3 side of the locking claw 11 faces the confirmation window 12 and the edge of the locking step portion 2a is visible from the confirmation window 12, so that the locking claw 11 and the locking step portion 2a The engaged state can be confirmed through the confirmation window 12, and when the engagement is insufficient, the holding wall 7 can be pushed down to be surely engaged.

  Then, in order to improve the stability of the standing state of the side wall 2 and the end wall 3, the insertion piece 14 is pushed into the insertion hole 15, and both sides of the base portion of the insertion piece 14 are engaged with the insertion hole 15.

  In the corrugated tray as described above, the assembling work can be easily and reliably performed. When the article is transported, when the end wall 3 is grasped and lifted, the end wall 3 is prevented from falling down and the side wall 2 is prevented from falling. And since the standing state of the end wall 3 is reliably maintained, it is possible to safely carry the article without dropping it in a state of being firmly held in shape.

  Also, as shown in FIG. 6, when stacking, if the lower part of the side wall 2 of the upper tray is fitted between the convex portions 2b of the opposing side wall 2 of the lower tray, the upper and lower trays The movement in the width direction is regulated by the convex part 2b, and the movement in the length direction is regulated by the contact between the edges of the convex part 2b and the holding plate 8, so that the collapse of the load due to misloading is prevented. .

  In addition, in the said embodiment, in order to ensure shape retention property, in addition to the locking mechanism by engagement of the latching claw 11 and the latching step part 2a, the locking mechanism which pushes the insertion piece 14 into the insertion hole 15 is provided. Although provided, if priority is given to workability during assembly, the lock mechanism for pushing the insertion piece 14 into the insertion hole 15 may be omitted.

  Further, during stacking, the lower portion of the tray on the upper stage is sandwiched between the convex portions 2b of the opposing side wall 2 of the tray on the lower stage side to prevent the stacking deviation. An engagement protrusion by cutting and raising is provided at the top, and an engagement hole is formed in a ridge with the end wall 3 of the bottom wall 1, and the stacking is prevented by engagement between the engagement protrusion and the engagement hole. You may do it.

  In addition, although the tray whose peripheral wall has a square cylindrical shape is illustrated, the same configuration can be applied to a tray having a chamfered inclined portion at a corner portion.

DESCRIPTION OF SYMBOLS 1 Bottom wall 2 Side wall 2a Locking step part 2b Protruding part 3 End wall 4, 5 End plate 6 End top plate 7 Holding wall 8, 9 Holding plate 10 Top plate 11 Locking claw 12 Confirmation window 13 Relief hole 14 Insertion piece 15 insertion hole

Claims (1)

Side wall (2) and end wall (3) are connected around corner wall around bottom wall (1), end wall (3) is double end plate (4, 5) and end top plate (6) The holding wall (7) is connected to the side end of the end wall (3), and the holding wall (7) extends from the end plate (4, 5) and the end top plate (6), respectively. Formed by the body plate (8, 9) and the top plate (10),
In the holding wall (7), a notch straddling the inner holding plate (9) and the crest plate (10) is made to form a locking claw (11), and the locking claw (11) is along the fold. Bending into a chevron, forming a locking step (2a) where the upper end is notched at the side wall (2) and the end side becomes higher,
The end wall (3) and the holding wall (7) are bent so as to be wound together, bent so as to form a corner portion, and the side wall (2) between the holding plates (8, 9) of the holding wall (7). ), The end wall (3) side edge of the locking claw (11) and the edge of the locking step (2a) are in contact with each other. In the corrugated tray in which the side wall (2) and the end wall (3) are maintained in an upright state by being engaged by
From the inside plate (9) of the holding wall (7) to the crest plate (10), it engages with this edge so that it faces the edge on the end wall (3) side of the engagement claw (11). A confirmation window (12) is provided for confirming engagement with the edge of the stepped portion (2a) .The confirmation window (12) has a locking claw (11) as one side of the radius, and the top plate (10) A cardboard tray characterized by having a fan-shaped opening with the other side of the radius .

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