JPS5843530Y2 - Cardboard shipping box - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a corrugated cardboard chain.

Renso usually brings goods and small parts to a small customer at a store or factory, and then unloads the stored items and returns the empty boxes to the original store or factory, where they try to fulfill the same role again. Boxes for transporting parts are often made of wood, metal, and recently made of thermoplastic synthetic resin, but interlocking boxes made of corrugated cardboard are also quite widely used.

Due to the characteristics of the corrugated board itself, this corrugated cardboard chain exhibits considerable strength when no load is applied, but it can be used in rough ways, such as stacking the same series in several tiers with parts, etc. inside. Although there are major drawbacks such as the lack of strength margin and the fact that the fabric will break down earlier than it appears, and once the back cracking has occurred, it is difficult to repair the cardboard material, it is difficult to reduce the production cost. In view of the fact that it has established a unique field of existence thanks to its low cost and ease of workability, we have developed a corrugated cardboard interconnection that is easy to assemble and disassemble and greatly increases the load strength when stacked. The aim is to provide the market with the following.

An embodiment of the present invention will be described according to the attached drawings. Reference numeral 1 denotes a phase-linked main body, which includes a bottom plate portion 2 and side wall components 3a to 3d.
A box body is formed, and folded hem pieces 5a to 5d are integrally connected to the open ends 4a to 4d of the box body, respectively, so as to be bendable at the fold line X.

One of the corresponding side wall pieces 3a and 3b has a symmetrical shape and is approximately the same length as the higher part, and is folded back at the fold line , 5b, cut inward in a straight line 6, 6' from a point slightly lower than the upper corner as shown in FIG. 7,7' are formed.

The other corresponding side wall pieces 3 C and 3 d are also symmetrical and have approximately the same length as the higher part, and are folded back at the fold line 5 C, 5d
As clearly shown in Figure 2, there are flanges 8 on both sides that protrude from below.
, 8', the sliding slope 11, 11' forming the constricted part 9, 9' and the insertion head 10 following the constricted part 9, 9' is provided above and below the constricted part 9, 9', 9, 9'. Two fold lines y and X are provided.

12 is a notch hole for the handhold.

Now, as shown in FIG.
First, one of the corresponding hem pieces 5a and 5b is folded inward as shown in FIG.

Next, the other corresponding hem pieces 5C, 5d are bent horizontally along the fold line y, and while folding further inward at the next fold line 2, insert the insertion heads 10. 10 to the sliding slopes at both ends 11.11
', 11 and 11' are inserted while engaging with each other, and the cross-sectional structure shown in FIG. 4 is obtained.

Since the present invention has the above-mentioned configuration, although it is made of corrugated cardboard, one of the side wall constituent pieces 3 a and 3 b is folded in half along the fold line X to form a double side wall, and the notches formed at both ends 6, 6', 6, 6' and the sliding slope 11.11' of the insertion head 10.10 in the other side wall component piece 3C, 3d. The insertion head 10.10 is connected to the side wall components 3C and 3d.
Since the muscle pattern part 13.13 will be formed on the inside of the box body 1, one of the corresponding edges 4 a and 4 b of the opening edges 4 a to 4 d of the box 1 will be connected to the other corresponding edge. The edges 4C, 4d have a bracing effect and the protruding flanges 8, 8'
protects the edge parts 4 a and 4 b, and the fourth
When several pieces of the same series are piled up as shown by the chain line in the figure, the particularly strong edge portion 4C having the muscle portions 13 and 13 is automatically applied without applying the load to the edge portions 4a and 4b.
, 4d is the main support, so it exhibits extremely strong side wall strength, and the overall structure is simple and assembly and disassembly is easy.It has extremely excellent practical effects for a corrugated cardboard material with low material cost. This is an idea that brings about this.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the folded hem piece in its open state, Fig. 2 is a perspective view of only one corresponding side component piece folded in, and Fig. 3 is a connected phase view with the other corresponding side component piece folded in as well. A perspective view of the main body,
FIG. 4 is a sectional view taken along the line A--A in FIG. 3. 1... Phase-linked main body, 2... Bottom plate part, 3...
...Side wall component, 4...Opening edge, 5
...Folded hem piece, 6...Notch, 7...
... Removal prevention step, 8 ... Protruding flange, 9...
...Constriction, 10...Plug head, 11...
... Sliding slope, 12 ... Cut hole for handhold.

Claims (1)

[Scope of utility model registration request] Side wall constituent pieces 3a, 3b, 3C, 3d (7) of the phase-linked main body 1
In the corrugated cardboard chain in which the folded hem pieces 5a, 5b, 5C, 5d are arranged in a row on the upper opening edges 4a, 4b, 4C, 4d so as to be bendable along the fold line X, one of the corresponding In addition to providing retaining step portions 7 and 7' on both sides of the folding hem pieces 5 a and 5 b on the fold line X side, the retaining step portions 7
, 7' are formed, and protruding flanges 8, 8' are provided between the folding lines X and y of the other corresponding folded hem pieces 5C, 5d. Constricted portions 9, 9' are provided between the fold line y and the fold line 2 on both sides of pieces 5 C and 5d, and sliding slopes 11 and 11' continuing to the constricted portions 9 and 9' are formed, and the folded Fold the hem pieces 5a, 5b, 5C, and 5d into the inner space of the linking body 1, and connect the linear cut portions 6, 6' and sliding slopes 11°11' with the retaining step portions 7, 7'. Part 9,9
A corrugated cardboard interconnection characterized in that it is configured to engage with each other.