JP2000229627A - Lidding packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a yield of products by placing a downward insertion piece along an inner peripheral surface to prevent it from interfering with contents and by reducing a width of two divided lid pieces. SOLUTION: The packaging box comprises barrel plates connected via creases, base forming pieces connected under the respective barrel plates, and lid pieces 6, 7 with approximately the same width which overlap at the center via respective crease while they are connected on one of the opposite barrel plates 4 or the like. An insertion piece 8 is connected via a crease on a side of the upper lid piece 7, and a cut for forming a lock hole is applied on the crease. A notched stage 61 into which the insertion piece 8 can be inserted is notched from an open side on a side of the lower lid piece 6, while a locking tab 13 is made to protrude via a crease on one of the other opposite barrel plates 1. The insertion piece 8 of the upper lid piece 7 is inserted into the notched stage 61 of the lower lid piece 6 to be located along an inner periphery of the barrel plate 1, and the locking tab 13 is inserted into a lock hole 74 of the upper lid piece 7 to have the upper lid piece 7 locked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box which can be easily closed.

[0002]

2. Description of the Related Art Conventionally, a packaging box in which a lid portion is divided into two in order to improve the yield of corrugated cardboard materials has been known.
As shown in FIG. 7, there is known a configuration in which the insertion pieces A of both lid pieces are locked together with tongue pieces from both sides in a state of being fitted. However,
The insertion piece A is arranged downward at the center, so that it becomes an obstacle depending on the contents, or the continuous installation of the two insertion pieces A causes the yield of the cardboard material to be poor.

[0003]

Therefore, according to the present invention, the downward insertion piece or the like is arranged not at the center but at the inner periphery which does not hinder the contents, and the divided lid piece is reduced in width. An object of the present invention is to provide a packaging box capable of improving the yield.

[0004]

In order to solve the above-mentioned problems, according to the present invention, a body plate is continuously provided via a fold, and a bottom forming piece is provided continuously via a fold under each body plate. Lid pieces of approximately the same width that overlap at the center part are respectively connected on the body plate via folds, and insertion pieces are connected via folds to one side of one of the upper lid pieces. A notch for forming a locking hole is provided in the fold, and a notch step portion for inserting the insertion piece is cut out from one side of the other lower lid piece from the open side, and the other opposing one is formed. A locking tongue is projected from the lower end of both sides of the locking tongue, and a notch is formed by bending the upper tongue. Is inserted into the notch step of the lower lid, placed on the inner periphery of the body plate, and the locking tongue of the body plate is inserted into the locking hole of the upper lid to lock the upper lid. It is a packaging box.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to illustrated embodiments. The packaging box made of corrugated cardboard according to the embodiment shown in FIG. 1 is in the unfolded state shown in FIG. 2, in which reference numerals 1 and 3 are body plates in the width direction, reference numerals 2 and 4 are body plates in the longitudinal direction.
They are arranged alternately and sequentially through 0 and 30. In addition,
A glue margin piece 45 is continuously provided on the body plate 4 at one end via a fold 40. Further, bottom pieces 50, 51, 52 and 53 forming the bottom of the American lock system are continuously provided at the lower ends of the body plates 1, 2, 3 and 4 via folds 11, 21, 31 and 41, respectively. It is.

A fold 2 is formed at the upper end of the body plates 2 and 4 in the longitudinal direction.
Cover pieces 6 and 7 having substantially the same width are continuously provided via the holes 2 and 42. The width of each of the lid pieces 6 and 7 is slightly larger than half of the opening width of each of the lids, and is slightly overlapped at the central portion when closed. A small insertion piece 8 is continuously provided on one side of the lid piece 7 on the upper side via a fold 71, and a cut 73 for forming a locking hole is formed in the fold 71. . In addition, a cutout step 61 into which the insertion piece 8 can be inserted is cut off from the open side on one side of the other lid piece 6 on the lower side.

Further, a locking tongue 13 is protruded from the widthwise body plate 1 through a fold 12, and the locking tongue 13 is
A cut 14 is made short from the lower end of both side edges of the tongue so that the locking tongue 13 can be flexibly displaced. The projecting position of the locking tongue 13 is a position facing the cut 73 when bent. A bent piece 17 is connected to the upper half of the body plate 1 via a fold 16 at the upper end half opposite to the protruding portion of the locking tongue 13, and a fold is formed at the upper end of the body plate 3. A bent piece 33 is continuously provided through the entire length of the bent piece 32.

[0008] From this expanded state, the sheet is bent at each fold, and FIG.
Assemble into a box with the lid open. After accommodating the product, the bent pieces 17 and 33 are bent inward, and as shown in FIG. 4, first, the lower lid piece 6 is bent, and then the upper lid piece 7 is bent and The upper cover piece 7 is superimposed on the lower cover piece 6 by inserting the insertion piece 8 into the notch step 61 of the lower cover piece 6 and disposing it on the inner peripheral portion of the body plate 1.

The upper tongue 7 is locked by inserting the locking tongue 13 of the body plate 1 into the locking hole 74 formed at the position of the cut 73 by bending the insertion piece 8 (FIG. 1). 5 and FIG. 6). As a result, the lower lid piece 6 is blocked by the upper lid piece 7 and closed.

As described above, according to this embodiment, the lower lid piece 6 is closed only by locking the upper lid piece 7 with the locking tongue piece 13, so that the lid can be easily locked. Is torso 1
Because it is arranged along the inner peripheral surface of the, it does not become an obstacle. Further, in the unfolded state, the width of the lid piece can be slightly reduced because the continuous insertion piece A of the two lid pieces shown in FIG. 7 is unnecessary, so that the yield of the cardboard material is improved.

That is, in this embodiment, the width of the insertion piece A of one lid piece is necessary because the lid pieces 6 and 7 need to overlap, but the width is smaller by the width of the insertion piece A of the other cover piece. This is possible, and in a mass-produced packaging box, this reduction is a significant cost advantage.

Although the present embodiment has the above-described configuration, the present invention is not limited to this. For example, the shapes of both lid pieces are not limited, and the shapes of the locking tongue pieces and the locking holes thereof are not limited. The configuration of the bottom is also appropriate.

[0013]

According to the first aspect of the present invention, the lid can be locked with a simple structure, and the insertion piece connected to the lid piece is disposed along the inner peripheral surface of the body plate, so that it is obstructive. In addition, since the width of the lid piece can be slightly reduced, the product yield is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a development view thereof.

FIG. 3 is a perspective view showing a state where a lid is opened.

FIG. 4 is a perspective view in the process of closing a lid piece.

FIG. 5 is an enlarged perspective view of the lock portion of the lid piece, which is partially cut away.

FIG. 6 is an enlarged longitudinal sectional view of a main part thereof.

FIG. 7 is a perspective view of a main part of a related art partly cut away.

[Explanation of symbols]

 1, 2, 3, 4 Body plate 13 Locking tongue piece 17, 33 Folding piece 6, 7 Lid piece 61 Notch step 73 Notch for forming locking hole 74 Locking hole 8 Insertion piece

Claims (1)

[Claims] 1. A body plate 1, 2, 3, 4 is continuously provided via a fold, and a bottom forming piece is provided via a fold under each body plate.
Lid pieces 6 and 7 of approximately the same width that overlap at the central portion are successively provided on one of the opposed body plates 2 and 4 via folds 22 and 42, respectively.
An insertion piece 8 is continuously provided on one side of one lid piece 7 on the upper side via a fold 71, and a cutout 73 for forming a locking hole is made on the fold 71, and the other side on the lower side is formed. A notch step 61 into which the insertion piece 8 can be inserted is provided on one side of the lid piece 6 from the open side,
A locking tongue 13 protrudes from the other facing body plate 1 via a fold, and a cut 14 is made short from the lower end of both side edges of the locking tongue 13 to be folded. The insertion piece 8 of the upper lid piece 7 is inserted into the notch step 61 of the lower lid piece 6 by bending and arranged on the inner peripheral portion of the body plate 1, and the locking tongue piece 13 of the body plate 1
The upper lid piece 7 is locked by inserting the upper lid piece 7 into the locking hole 74 of the upper lid piece 7.