JPH0449066Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a foldable packaging box equipped with a retractable partition for packaging articles.

(Prior art) As a conventional example of this type, this inventor was
A collapsible packaging box equipped with retractable partitions as described in Japanese Patent No. 59-69131 was devised.

This idea has the advantage that the partitions can be used effectively because the retractable partitions surrounding the four sides are housed inside the box body and can be folded together with the box body. The means for fixing to the main body is achieved by inserting one tongue piece into the notch of the other, so if an article is stored in the core of the partition, the tip of the tongue piece will hit the article or the partition, In addition to the disadvantage that the lid cannot be securely attached to the box body, there is also the problem that the partitions may be damaged.

In particular, when a rectangular article is housed in the core by imitating a rectangular core, there is a small gap between the core and the article, making it even more difficult to insert the tongue piece into the notch. There was a problem with the cap fitting.

In addition, this type of packaging box is transported from factory to factory with parts stored in it, so the packaging box is used again after opening, which is called link use (repeated use).
However, when used repeatedly, there is a problem in that the tongue can be damaged or torn off in a short period of time, making it impossible to use it repeatedly in a short period of time.

(Problem to be solved by the invention) The problem of this invention is to provide a foldable packaging box equipped with expandable partitions so as not to damage the partitions when attaching the lid to the box body. The object of the present invention is to provide a packaging box that can be used.

Another challenge of this invention is to make it easy to attach the lid to the box body and to make opening the box easy.

(Means for solving the problem) The basic structure of this invention is a foldable packaging box consisting of a packaging box body and a retractable partition, and the packaging box body has a rectangular bottom piece. A fold is provided in the center of the bottom piece, parallel to the fold, side pieces that can be folded freely through the fold are provided on both ends of the bottom piece, and a fold is bordered on the outer edge of one side piece. At the same time, a lid is provided with a lid side piece on each side of the lid piece except for the side pieces, and a foldable reinforcement is provided on both sides in the extending direction of the central fold of the bottom piece. Furthermore, an inner lid piece is provided on the outside of these foldable reinforcing pieces through a fold provided in a direction perpendicular to the fold provided in the bottom piece, and these foldable reinforcing pieces are provided. A common fold is formed by extending the fold of the bottom piece in the center of the flexible reinforcing piece and the inner cover piece, and the expandable partition has symmetrical U-shaped parts at both ends. A core sheet bent into an uneven shape is sandwiched between a pair of sheets, and each contact surface of the core sheet and the sheet is glued together to form a plurality of elastic partition units for each adjacent partition. The individual sheets are adhered to each other, the partition is placed on the bottom piece, and the sheets on both sides of the partition are glued to the inside of the side pieces at both ends of the bottom piece.

(Function) In addition to being able to fold the box body into two along with the partition, this invention also allows the reinforcing pieces on both sides of the bottom piece and the inner lid piece to be bent toward the partition side into an L-shaped cross section.
Not only can the side surfaces of the partition be protected by placing the reinforcing pieces along the partition, and the upper part of the partition can be protected by the inner lid piece, but also the partition, which tends to shrink, can be kept in an expanded state at all times so as not to restore.

By attaching the lid to the box body, it is possible to protect the items inside the partition, and the L-shaped reinforcing pieces on both sides of the bottom piece and the inner lid piece have the property of restoring to a horizontal state through the folds. Since the reinforcing pieces and the inner lid piece on both sides expand outward, this restoring stress acts on the lid side piece of the lid.

Therefore, by generating a frictional force between the lid side piece and the reinforcing piece and the inner lid piece, when the lid is attached to the box body, the lid can be secured without using tape or the like to stop the lid and the box body. Not open.

Additionally, since the lid does not need to be secured with tape or the like, the box itself can be opened easily.

(Example) Details of an example of this invention will be described with reference to the accompanying drawings.

This invention consists of a foldable packaging box body and a telescoping partition 38 made up of a plurality of telescoping partition units 36, and the partition 38 is arranged inside the box main body. That's what it's all about.

The structure of the packaging box body is as follows.

A square bottom piece 1 as shown in Figures 2 and 6.
0 is provided, and a fold 12 is provided in the center thereof.

Parallel to this fold 12, foldable side pieces 14, 14 are provided at both ends of the bottom piece 10 via folds.
is provided.

These side pieces 14, 14 on both sides constitute side pieces of the box body, and are used to attach both sides of a retractable partition 38, which will be described later.

Therefore, the main body of the box together with the side pieces 14, 14 of the bottom piece 10 has a U-shaped cross section due to the side pieces 14, 14 being raised up.

One side piece 1 of these both side pieces 14, 14
A lid piece 16 having substantially the same shape as the bottom piece 10 is provided at the outer end of the bottom piece 4 with a fold line 18 as a boundary.

Lid side pieces 20a, 20b, 20 are provided on each side of the lid piece 16 except for the one side piece 14 side described above.
c is provided.

Then, as shown in Figures 1 and 6, the bottom piece 1
The lid side piece 20b of the lid piece 16 located parallel to the side pieces 14, 14 of 0 has lid side pieces 20 on both sides thereof.
a, 20c (both lid side pieces 20a, 20c provided on the lid piece 16 provided perpendicular to the side pieces 14, 14 of the bottom piece 10) can be bent inward. A fold line 40 is provided diagonally inward from the corner.

It also protects the sides and top of the partition 38, which will be described later.
In order to prevent the partition 38 from shrinking during use, there are foldable reinforcing pieces 42, 4 on both sides of the central fold 12 of the bottom piece 10 in the extending direction.
2 is provided.

Furthermore, these foldable reinforcing pieces 42,
Inner lid pieces 46, 46 are provided on the outside of 42, respectively, through folds 44, 44 provided in a direction perpendicular to the fold 12 provided in the bottom piece 10.

A common fold 48 is provided at the center of these foldable reinforcing pieces 42, 42 and inner lid pieces 46, 46 by extending the fold 12 of the bottom piece 10, and a common fold 48 is provided in the center of these foldable reinforcing pieces 42, 42 and inner lid pieces 46, 46. The combined box body has folds 12 and 4.
It is designed so that it can be folded in half through the 8.

The partition unit 36 that constitutes the expandable partition 38 attached to the box body described above will be explained.

What is shown in FIG. 3 is a developed view of a core sheet 22 constituting a partition unit 36 to be described later.

Folds 24a, 24b, 2 are formed so that the core sheet 22 can be folded at regular intervals in the width direction.
4c and 24d are provided.

Three outer folds 24a, 24b on both sides,
Three pieces of outer single body 2 divided by 24c
6a, 26b, and 26c are portions that are bent into a U-shape and constitute U-shaped portions 27 and 27, which will be described later.

Further, each fold 24d is provided in the width direction at regular intervals between the inner sides of the third fold 24c from the outside.
A group of 28 core units is provided between them.

This group of core single bodies 28 is bent into a concave and convex shape, and constitutes the main body of a partition single body 36 to be described later.

As shown in FIGS. 4 and 5, the core sheet 22 is folded into a pair of sheets 3, which are bent into an uneven shape so that symmetrical U-shaped portions 37, 27 are formed at both ends.
4 and 34 from both sides, and the respective contact surfaces 29 and 31 of the core sheet 22 are adhered to the inside of the pair of sheets 34 and 34, thereby providing a partition unit 36 that is freely expandable and retractable.

A plurality of these partitioning units 36 are adhered to each other between the respective sheets 34, 34 of each adjacent partitioning unit 36, and an accordion-type expandable and contractible partition 38 is provided.

This retractable partition 38 is arranged on the bottom piece 10 of the packaging box body described above, and the partition 38 is arranged on the bottom piece 10 of the packaging box body.
The sheets 34, 34 on both sides of the bottom piece 10 are adhered to the insides of the side pieces 14, 14 on both sides of the bottom piece 10.

Therefore, the bottom piece 10 side of the partition 38 is the bottom piece 1
It is set in a free state with respect to 0.

Of course, this means that the partition 38 is provided in a freely expandable and retractable manner.

Next, we will explain how to use this invention.

(At the time of packaging) The center fold 12 provided on the bottom piece 10, the reinforcing pieces 42, 42 and the fold 48 provided by extending the fold 12 of the bottom piece 10 provided on the inner lid pieces 46, 46 are bordered. The box body, which has been folded in half in advance, is unfolded horizontally.

In this way, the partition 38 changes from a compressed state to a state in which a large number of grid-like squares are formed in accordance with the expansion of the box body, and each square can accommodate articles.

Therefore, items are stored in each square. Next, the reinforcing pieces 42, 42 provided on both sides of the bottom piece 10 and the inner lid pieces 46, 46 are bent to have an L-shaped cross section toward the partition 38 (see FIG. 1).

Thus, both sides of the partition 38 are provided with reinforcing pieces 42,
42, and the upper surface of the partition 38 is protected by inner lid pieces 46, 46.

Furthermore, since the reinforcing pieces 42, 42 and the inner lid pieces 46, 46 stand upright, the easily retractable partition 38 is always maintained in an expanded state.

Next, by mounting the lid toward the partition 38 side, the inside of the lid side pieces 20a, 20b, 20c of the lid is the outside of the side piece 14 provided on the other side of the bottom piece 10 and the reinforcing pieces 42, 42 on both sides. It is gently abutted along the

In this case, both the reinforcing pieces 42, 42 and the inner lid piece 46 exert a stress that tries to restore the horizontal state through the folds, and this action is caused by the lid side pieces 20a and 46 of the lid.
As a result of acting on the inside of 20c, the lid side pieces 20a, 2
By generating frictional force between 0c and the reinforcing pieces 42, 42 and the inner lid pieces 46, 46, the lid can be prevented from opening easily even if the lid is not particularly fixed to the box body.

In this way, articles are packaged and transported from factory to factory.

(When folded) The fold 12 provided in the bottom piece 10, the reinforcing pieces 42, 42 provided on both sides of the bottom piece 10, and the inner lid piece 46,
The box body is folded into two along a common fold line 48 provided at 46. Since the partition 38 is expandable and retractable, it is compressed together with the box body between the side pieces 14 provided on both sides of the bottom piece 10.

Next, the lid is folded over the folded box body through the crease 18, and the lid side pieces 2 on both sides of the lid are then folded.
By folding 0a and 20c through the fold line 40 to change from an upright state to a horizontal state and making the entire box into a plate shape, the box as a whole becomes less bulky.

(Effects of the invention) Since this invention has the above configuration, it has the following advantages.

The reinforcing pieces provided on both sides of the bottom piece and the inner cover piece are bent into an L-shaped cross section through the fold, but since they have the property of always restoring to the horizontal state at the fold, the restoration is difficult. Stress acts on the inside of the lid side piece of the lid,
As a result of this action being exerted on the inside of the lid side piece, frictional force is generated between the lid side piece and the reinforcing piece.
When the lid is attached to the box body, the lid can be prevented from opening without fixing with tape or the like.

To fix the lid to the box body, simply attach the lid to the box body, so when the lid is attached to the box body, the partitions will not be damaged and can be used for a long time. It can be used for so-called link use for repeated transportation of parts in between.

When this type of packaging box is used for transporting parts, etc., speed is particularly required, but it is suitable for commercial packaging because the lid of the packaging box can be quickly attached and opened. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the state of use, Fig. 2 is a plan view, Fig. 3 is a developed view of the core sheet, Fig. 4 is a schematic plan view of the partition unit, and Fig. 5 is a perspective view of the partition. FIG. 6 is a perspective view of the present invention. Explanation of symbols of main parts, 10... Bottom piece, 12...
...Fold, 14...Side piece, 16...Lid piece, 18...
Fold, 20a... Lid side piece, 20b... Lid side piece, 2
0c... Lid side piece, 22... Core sheet, 27...
... U-shaped part, 29 ... contact surface, 31 ... contact surface,
34... Sheet, 36... Partition unit, 38...
...Partition, 42...Reinforcement piece, 44...Fold, 46
...Inner lid piece, 48...fold.

Claims (1)

[Scope of Claim for Utility Model Registration] A foldable packaging box consisting of a packaging box body and a retractable partition, the packaging box body having a fold 12 in the center of a rectangular bottom piece 10. provided,
Parallel to this fold 12, foldable side pieces 14, 14 are provided at both ends of the bottom piece 10 via the fold, and at the outer edge of one side piece 14, the fold 18 is the boundary. A lid piece 16 is provided, and side pieces 14 thereof
Lid side pieces 20a, 20 are attached to each side of the lid piece 16 except for the sides.
b, 20c is provided, and foldable reinforcing pieces 42, 42 are provided on both sides of the central fold 12 of the bottom piece 10 in the extending direction, and these foldable reinforcing pieces 42, 42 are further provided. Bottom piece 1 on the outside of pieces 42, 42
The inner lid pieces 46, 46 are inserted through the folds 44, 44 provided perpendicularly to the fold 12 provided at 0.
are provided, and these foldable reinforcing pieces 4
A common fold 48 is formed by extending the fold 12 of the bottom piece 10 at the center of the inner lid pieces 2, 42 and the inner lid pieces 46, 46, and the retractable partition has symmetrical U-shaped parts 27, The core sheet 22 is folded into an uneven shape so as to form a groove 27, and the core sheet 22 is sandwiched between a pair of sheets 34, 34.
2 and the respective contact surfaces 29, 31 of the sheets 34, 34 are attached to each sheet 3 of each adjacent partitioning unit 36.
The partition 38 is placed on the bottom piece 10, and the sheets 34, 34 on both outer sides of the partition 38 are glued to the inside of the side pieces 14, 14 on both ends of the bottom piece 10. A foldable packaging box equipped with partitions that are characterized by the following characteristics: