JP2003011951A - Tray made of corrugated board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray made of a corrugated board capable of being simply assembled. SOLUTION: The tray made of a corrugated board has four side walls 2, each being connectively provided to each side of the circumference of a bottom wall 1. The adjacent side walls 2 are connected to each other with a folding piece 4, and a ruled line 16 is formed on each folding piece 4 at an angle of 45 degrees. A full-cut ruled line 18 is formed on the boundary between a connected portion of the paired side walls 2 and the folding piece 4 except a bridge 17, and it is designed so that in conjunction with the erection of the side walls 2, the folding piece 4 is folded along the paired side walls 2. Further, it is designed so that an insertion piece 7 connectively provided to an embracing piece 6 for embracing one of the paired side walls 2 is inserted into an insertion hole 8 while extending to the underside of the bottom wall 1 and pushing it up.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to transportation of fruits and vegetables.
The present invention relates to a cardboard tray used for storage and the like.

[0002]

2. Description of the Related Art Conventionally, a cardboard tray as shown in FIG. 5 has been used. In this tray, four side walls 52 are continuously provided on each side of the peripheral edge of the bottom wall 51, and a pair of side walls 52 are provided.
Bending pieces 54 extending from both side edges of the other pair of side walls 52 inside the
The bent piece 54 is wound by the top plate 55 and the inner end plate 56 extending from the middle of the upper edge of the pair of side walls 52.

Further, another pair of side walls 52 is held by a holding plate 58 extending from a side edge of a cross plate 57 which is continuously provided on both sides of the upper edges of the pair of side walls 52, and the difference between the tips of the holding plates 58 is held. Piece 59
Are laterally inserted and locked in the insertion holes 60 at the bottom of the other pair of side walls 52.

[0004]

By the way, in the above tray, while assembling, while holding the other pair of side walls 52,
There is a problem that the bent piece 54 must be wound by the top plate 55 and the inner end plate 56, and that it takes time to position the insertion piece 59 when inserting it into the insertion hole 60.

Therefore, an object of the present invention is to provide a cardboard tray that can be easily assembled.

[0006]

In order to solve the above-mentioned problems, the present invention relates to a corrugated board tray in which four side walls 2 are connected to each peripheral edge of a bottom wall 1, and adjacent side walls 2 are folded pieces 4 together. A crease line 16 of 45 ° is formed on the folding piece 4, and the boundary between the pair of side walls 2 and the folding piece 4 is a fully cut crease line 18 except for the bridge portion 17. With the rising of the side wall 2, the folding piece 4 is formed. Is folded along the pair of side walls 2 so that the folding piece 4 does not need to be assisted when folded.

Further, four side walls 2 are continuously provided on each peripheral edge of the bottom wall 1, and the crosspieces 5 continuously provided at the upper edges of the pair of sidewalls 2 are bent inward to extend from the side edges of the crosspieces 5. In the corrugated cardboard tray that holds the other pair of side walls 2 with the holding plate 6 that has been taken out, and inserts the insertion piece 7 that is continuously provided at the tip of the holding plate 6 into the insertion hole 8 to lock the holding plate 6. By extending to the lower end of the other pair of side walls 2 to form the insertion hole 8 in the bottom wall 1 and inserting the insertion piece 7 into the insertion hole 8 while rotating it downwardly of the bottom wall 1 and pushing it up. Strict positioning of the piece 7 becomes unnecessary.

It should be noted that the holding plate 6 is formed up to the middle portion of the other pair of side walls 2 and the insertion hole 8 is formed in this side wall 2 so that the insertion piece 7 can be inserted into the insertion hole 8 while being pushed up. May be.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS.

In the corrugated cardboard blank shown in FIG. 1, four side walls 2 are continuously provided on each peripheral edge of the bottom wall 1, and adjacent side walls 2 are connected by a folding piece 4. A pair of fan-shaped crosspieces 5 are continuously provided on both sides of the tip edges of the pair of short side walls 2, and a holding plate 6 is continuously provided on the outer edge of the crosspiece 5.

An insertion piece 7 is continuously provided at the leading edge of the holding plate 6, and an insertion hole 8 is formed at the edge of the bottom wall 1 along the ridge of the other pair of side walls 2 on the long side. It is provided. The insertion hole 8 is cut deeper than the length of the insertion piece 7 and has a width slightly smaller than that of the insertion piece 7.

Protrusions 9 are provided on both sides of the tip edge of the other pair of side walls 2.
However, engaging holes 10 are provided on the outer sides of the crosspieces 5, respectively, and projecting portions 11 for preventing deviation during stacking are provided on the middle portions of the tip edges of the other pair of side walls 2.

A portion of the pair of side walls 2 between the tip ends of the pair of side walls 2 sandwiched by the crosspieces 5 is lowered, and an inner end plate 13 is connected to the portion through a top plate 12. The inner end plate 13 has a projection 14 formed at the front edge thereof, and an engagement hole 15 formed at the ridge of the bottom wall 1 with the pair of side walls 2.

A half cut ruled line 16 of 45 ° is formed on the folding piece 4, and a boundary between the pair of side walls 2 and the folding piece 4 is a full cut ruled line 18 except for a bridge portion 17 connected via two pushing ruled lines.
It is said that. The boundary between the folding piece 4 and the other pair of side walls 2 is a pushing ruled line 19, and a through hole 20 is provided at the intersection of the ruled lines 16, 18 and 19 to facilitate bending.

In order to assemble such a blank into a tray, as shown in FIG. 2, the bottom wall 1 to the four side walls 2 are erected, and the folding piece 4 is folded in half around the 45 ° ruled line 16 as an axis. , Fold along the pair of side walls 2.

Then, as shown in FIG. 3, the folding piece 4 is wound by the top plate 12 and the inner end plate 13, and the protrusion 14 is engaged with the engaging hole 1.
5 is engaged.

Next, the cross plate 5 is bent in the horizontal direction, the projection 9 is engaged with the engaging hole 10, and the holding plate 6 is used to form the other pair of side walls 2.
Is held, and the insertion piece 7 is rotated below the bottom wall 1 and pushed up to be inserted into the insertion hole 8 and locked.

In such a corrugated board tray, since the boundary between the pair of side walls 2 and the folding piece 4 is easily bent along the all-cut ruled line 18, even if a thick A flute is used as the material, the folding piece 4 can be used. Is surely folded along the pair of side walls 2 and is suitable for machine assembly.

Further, even if the insertion piece 7 is not precisely positioned with respect to the insertion hole 8, it can be locked simply by pushing it up from below the bottom wall 1.

Next, a second embodiment of the present invention will be described based on FIG. 4, focusing on the differences from the first embodiment.

In this tray, the crosspieces 5 are connected to each other over the entire width of the pair of side walls 2, the holding plate 6 is provided up to an intermediate portion of the side walls 2 of the other pair, and the insertion hole 8 is formed in the insertion hole 8 of the other pair. It is formed from the middle portion of the side wall 2 to the bottom wall 1.

At the time of assembling, the insertion piece 7 is pushed inward and inserted into the insertion hole 8 to be locked to maintain the assembled state.

With this construction, the insertion piece 7 is attached to the bottom wall 1
Since it is not necessary to rotate it downwards, the ease of assembly is improved and the material can be used efficiently, so that it can be manufactured at low cost.

In each of the above-mentioned embodiments, the crosspiece 5 is connected to the side wall 2 on the short side, but the crosspiece 5 may be connected to the side wall 2 on the long side. In this case, the bending of the long side wall 2 is suppressed by the ridgeline of the side wall 2 and the crosspiece 5.

[0025]

As described above, in the corrugated cardboard tray according to the present invention, the folding piece connecting the adjacent side walls has 45 pieces.
Since the ruled line of ° is provided and the cut-off ruled line is provided at the boundary between the pair of side walls and the folding piece, the folding piece is automatically folded along the pair of side walls to facilitate the assembly.

Further, since the insertion piece is pushed up and inserted into the insertion hole, strict positioning of the insertion piece is not required, and workability during assembly is improved.

[Brief description of 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 above.

FIG. 3 is a perspective view showing an assembled state of the same.

FIG. 4 is a perspective view showing an assembled state of the second embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional cardboard tray.

[Explanation of symbols]

1 bottom wall 2 side walls 4 folding pieces 5 Deck 6 Embracing board 7 Insert 8 insertion holes 16 45 ° ruled line 17 Bridge 18 all cut ruled lines

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Atsushi Ishikawa             5-14 Ryoke Kawaguchi City Rengo Stock             Company Packaging Technology Center F-term (reference) 3E060 AA03 AB20 BC02 CG12 CG23                       DA25 EA12

Claims (3)

[Claims] 1. A corrugated cardboard tray in which four side walls 2 are continuously provided on each peripheral edge of a bottom wall 1, adjacent side walls 2 are connected by a folding piece 4, and a 45 ° ruled line 16 is formed on the folding piece 4. Then, the boundary between the pair of side walls 2 and the folding piece 4 is made into a full cut ruled line 18 excluding the bridge portion 17, and the folding piece 4 is folded along the pair of side walls 2 as the side wall 2 stands up. A characteristic cardboard tray. 2. Four side walls 2 are continuously provided on each side of the peripheral edge of the bottom wall 1, and the crosspieces 5 continuously provided at the upper end edges of the pair of side walls 2 are bent inward to extend from the side edges of the crosspieces 5. In the corrugated cardboard tray that holds the other pair of side walls 2 with the holding plate 6 that has been taken out, and inserts the insertion piece 7 that is continuously provided at the tip of the holding plate 6 into the insertion hole 8 to lock the holding plate 6. It is characterized in that it extends to the lower end of the other pair of side walls 2, an insertion hole 8 is formed in the bottom wall 1, and the insertion piece 7 is rotated below the bottom wall 1 and pushed up to be inserted into the insertion hole 8. Cardboard tray to be. 3. Four side walls 2 are continuously provided on each side of the peripheral edge of the bottom wall 1, and the crosspieces 5 connected to the upper edges of the pair of sidewalls 2 are bent inward to extend from the side edges of the crosspieces 5. In the corrugated cardboard tray that holds the other pair of side walls 2 with the holding plate 6 that has been taken out, and inserts the insertion piece 7 that is continuously provided at the tip of the holding plate 6 into the insertion hole 8 to lock the holding plate 6. A corrugated cardboard tray characterized in that the insertion hole 8 is formed in the side wall 2 up to the middle portion of the other pair of side walls 2, and the insertion piece 7 is pushed inward and inserted into the insertion hole 8.