JP4064519B2 - Cardboard tray - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simple assembly type cardboard tray used for transporting fruits and vegetables.
[0002]
[Prior art]
Conventionally, a cardboard tray as shown in FIG. 5 is known. The tray includes a bottom wall 50, a pair of side walls 51, and an end wall 52. The end wall 52 includes an outer end plate 53, a top plate 54, and an inner end plate 55 that are sequentially connected to the bottom wall 50. . The side wall 51 and the outer end plate 53 are connected by a connecting member 57 having a 45 ° crease line 56 toward the corner of the bottom wall 50, and one side portion of the connecting member 57 is attached to the inner surface of the outer end plate 53. Yes. An engaging protrusion 58 is provided on the upper edges of the connecting member 57 and the outer end plate 53, and a through hole 59 is formed in the top plate 54 from which the engaging protrusion 58 protrudes. A lock piece 60 is provided at the leading edge of the inner end plate 55, and an engagement hole 61 is provided at the end of the bottom wall 50. The engagement between the lock piece 60 and the engagement hole 61 causes the inner end plate 55 to return. Further, when stacking, the engaging protrusions 58 of the lower tray are engaged with the engaging holes 61 of the upper tray, thereby preventing the lateral displacement between the trays.
[0003]
The tray is supplied to a user such as a farmer in a flat state in which the outer end plate 53, the top plate 54, and the inner end plate 55 are extended and the side wall 51 is laid down in consideration of transportation efficiency. Assembled by. At this time, when the outer end plate 53 is erected, the side wall 51 is also erected, so that it can be assembled very easily.
[0004]
[Problems to be solved by the invention]
By the way, as the material of the tray, a thick cardboard such as a B-stage is used in order to withstand the transportation of heavy agricultural products. For this reason, the production of the tray requires a gluer that can bond the corners of thick cardboard, which requires a large initial investment, which increases the cost, and if the gluing of the connecting member 57 is stopped, Assembling becomes difficult.
[0005]
Further, since the end wall portion is sandwiched between the two folded connection members, the width is narrow, and there is a possibility that the upper tray is dropped into the lower tray when stacking.
[0006]
Therefore, an object of the present invention is to provide a cardboard tray that is easy to assemble manually and can be easily stacked at low cost.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises a bottom wall, a pair of side walls and an end wall, and the end wall is composed of an outer end plate, a top plate and an inner end plate that are successively connected to the bottom wall, The side wall and the outer end plate are connected by a connecting member having a crease line of 45 ° toward the corner of the bottom wall, and the connecting member is folded in two along the crease line, and the outer end plate and the inner end plate are in cardboard tray sandwiched between the folding plates leading to the connecting member and the inner end plate provided, see write folding the folding plate between the coupling member and the inner end plate, the connecting member, folding lines The support column was formed by cutting from the side toward the side wall, the support column was in contact with the bottom wall, and the step of the support column and the folding plate were oriented in the vertical direction .
[0008]
When configured in this way, from the flat blank state, it is easy to place the folding plate on the inner end plate and grip it, and bend it so that the outer end plate, top plate and inner end plate are rolled in, without gluing in advance. Can be assembled into.
[0009]
In addition, the folding plate is sandwiched between the outer end plate and the inner end plate together with the connecting member folded in two , the column part contacts the bottom wall, and the column of the column part and the folding plate faces in the vertical direction. In addition to improving the strength against load, the width of the top plate can be widened to prevent a drop during stacking.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. In the blank according to the first embodiment shown in FIG. 1, side walls 2 are connected to both side edges of the bottom wall 1, and an outer end plate 3, a top plate 4 and an inner end plate 5 are sequentially connected to both end edges. . The side wall 2 and the outer end plate 3 are connected by a connecting member 7 having a crease line 6 of 45 ° toward the corner of the bottom wall 1, and the connecting piece 7 is cut from the crease line 6 toward the side wall 2. A support column 8 is formed. Folding plates 9 are connected to both side edges of the inner end plate 5, and the folding plates 9 are connected to the connecting member 7 through connecting pieces 10. Engagement protrusions 11 are formed on the inner edge of the folding plate 9 by cutting the connecting piece 10, and a through hole 12 is formed in the top plate 4. A lock piece 13 is provided at the leading edge of the inner end plate 5, and an engagement hole 14 is provided at the end of the bottom wall 1.
[0011]
This tray is delivered to the user in the blank state as described above, and assembled in the form shown in FIG. 3 through the process shown in FIG. In that process, the side wall 2 is erected from the bottom wall 1, the folding plate 9 is overlapped with the inner end plate 5, and the connecting member 7 is folded in two along the fold line 6, while the outer end plate 3, the top plate 4, When the end plate 5 is bent so as to be wound, an end wall 15 is formed. At this time, the engaging protrusion 11 protrudes upward from the top plate 4 through the through hole 12. Thereafter, the lock piece 13 is engaged with the engagement hole 14 to prevent the inner end plate 5 from returning. In this way, the user can easily assemble even without pre-gliding at the manufacturing stage.
[0012]
When stacking the trays, the engaging projections 11 of the lower tray are engaged with the engaging holes 14 of the upper tray to prevent the lateral displacement of the trays.
[0013]
Here, as shown in FIG. 4, the end wall 15 is sandwiched between the outer end plate 3 and the inner end plate 5 together with the connecting member 7 in which the folding plate 9 is folded in two, and the column portion 8 of the connecting member 7 is Since it is in contact with the bottom wall 1 and the columns of the support column 8 and the folding plate 9 are vertically oriented, the strength against compressive load is excellent, and the tray on the upper side is securely attached when stacking Can be supported.
[0014]
Further, since the width of the top plate 4 can be widened, the upper tray falls into the lower tray even when the upper tray is placed at a position shifted from the lower tray when positioning during stacking. It becomes harder and the stored items are protected.
[0015]
【The invention's effect】
As described above, the tray according to the present invention can be easily assembled from a flat blank state without being glued in advance. For this reason, it can be manufactured without introducing expensive glue and can be provided at low cost.
[0016]
In addition, since three cardboards are sandwiched between the end walls , the support columns are in contact with the bottom wall, and the steps of the support columns and the folding plate face in the vertical direction . The width can be increased, the drop during stacking can be prevented, and the stored items can be protected.
[Brief description of the drawings]
FIG. 1 is a diagram showing a blank according to a first embodiment of the present invention. FIG. 2 is a perspective view showing an assembling process of the same. FIG. 3 is a perspective view showing an assembled state of the same. Figure
FIG. 5 is a perspective view showing a conventional tray.
1 bottom wall 2 side wall 3 outer end plate 4 top plate 5 inner end plate 6 crease line 7 connecting member
8 struts 9 Folding plate
15 end walls

Claims (1)

The bottom wall 1, made from each pair of side walls 2 and end walls 15, the end wall 15, the bottom wall 1 sequentially continuously provided with outer end plate 3, and consists of the top plate 4 and the inner end plate 5, the side wall 2 and an outer end plate 3, and connected by a connecting member 7 having the folding lines 6 of 45 ° toward the corners of the bottom wall 1, the outer end plate 3 of the connecting member 7 and folio along the fold line 6 between the cardboard tray sandwiched between an inner end plate 5, the folding plate 9 connected to the connecting member 7 and the inner end plate 5 is provided, and the connecting member 7 and the inner end plate 5 of the folding plate 9 see write folding, the connecting member 7, the pillar portion 8 is formed by cutting towards the fold line 6 to the side walls 2, struts 8 is brought into contact with the bottom wall 1, step struts 8 and folding plates 9 A corrugated tray with eyes facing up and down .

Images