JP2003291943A - Paper-made packaging box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made packaging box which poses no problem of generating an irregular fold on an inserting piece even when unpacking is repeated. <P>SOLUTION: The paper-made packaging box made of a paper material such as a boxboard and a corrugated board comprises two pairs of facing side boards 2, 2, 3 and 3, a bottom board part 4 for closing a lower end, a top lid 6 continuously provided on the top end of the side board positioned at the back side part and for closing the top end, and the inserting piece 7 continuously provided at the front end of this top lid 6 and for holding a lid-closing condition by being inserted into the inner face of the top end of the side board 2 positioned at the front side part. An approximately open chevron-shaped ruled line 13 is formed over the whole length in the depth direction of the inserting piece 7 at the central part of the inserting piece 7, and a V-shaped ruled line 14 surrounded by this approximately open chevron-shaped ruled line and the top end of which is joined to the top end parts of the approximately open chevron- shaped ruled line, is formed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper packaging box made of a paper material such as a cardboard and a corrugated board for storing an article to be packaged.

[0002]

2. Description of the Related Art Conventionally known paper packaging boxes include, for example, those shown in FIGS.

In the following, referring to the drawings, reference numeral 1 denotes a paper packaging box made of paper material such as cardboard and corrugated board. This paper packaging box 1 comprises two sets of a long side and a short side. Opposed side plates 2, 2, 3, 3 and two sets of opposed side plates 2, 2, 3,
A bottom plate portion 4 formed by a bottom plate forming flap connected to the lower end of 3; inner lids 5 and 5 connected to the upper ends of the opposite side plates 3 and 3 on the short side; and one set on the long side. Of the facing side plates 2 and 2, the upper lid 6 is provided continuously to the upper end of the side plate 2 located at the rear side.
In order to maintain the closed state by being inserted so as to overlap with the upper end inner surface of the side plate 2 located on the front side of the pair of opposed side plates 2 and 2 on the long side which are continuously provided at the front end of the upper cover 6. The upper end of the side plate 2 positioned on the front side is lifted at the central upper end of the side plate 2 positioned on the front side so as to overlap with the inner surface of the upper end of the side plate 2 positioned on the front side. A semicircular notch 8 is formed to facilitate opening of the. Specifically, a reinforcing plate portion 9 that is bent inward and overlaps the inner surface of the side plate 2 that is located on the front side portion is continuously provided at the upper end of the side plate portion 2 that is located on the front side portion. A semi-circular notch 10 is formed. Since the reinforcing plate portion 9 is present inside the side plate 2 located on the front side in this way, the front side portion of the paper packaging box 1 has a double wall structure, and the insertion piece 7 has the reinforcing plate portion 9 in the closed state. It will be inserted so as to overlap the inner surface of the upper end of.

In the above structure, when the upper lid 6 is opened from the closed state, as shown in FIG. 7, a finger is placed inside the reinforcing plate portion 9 overlapping the inside of the side plate 2 located on the front side at the positions of the cut portions 8 and 10. It is possible to open the upper lid 6 by inserting 11 and hooking the finger 11 on the inserting piece 7 and lifting the inserting piece 7.
As a result of the insertion piece 7 being pressed inward by inserting, there is a problem that an irregular crease (wrinkle) 12 is generated at the center of the insertion piece 7 as shown in FIG. If the fold line 12 is formed on the insertion piece 7, the paper packaging box 1 cannot be shipped.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and provides a paper packaging box free from the problem that irregular creases are formed in the insert even if the packaging is repeatedly unpacked. The purpose is.

[0006]

In order to solve this problem, the present invention relates to a paper packaging box made of a paper material such as cardboard and corrugated board, which comprises two sets of opposing side plates and a bottom plate portion closing the lower end. And an upper lid that is connected to the upper end of the side plate located on the rear side and closes the upper end, and an upper lid that is connected to the front end of the upper cover and that is inserted so as to overlap the inner surface of the upper end of the side plate located on the front side to close the lid A holding piece for holding the inserting piece, and a ruled line having a substantially C-shape is formed in the central portion of the inserting piece over the entire length in the depth direction of the insert piece and is surrounded by the substantially C-shaped ruled line. The gist of the invention is to form a V-shaped ruled line whose upper end is connected to the upper end of a substantially C-shaped ruled line. Further, the gist of the present invention is that the substantially C-shaped ruled line is formed in an arc shape that bulges outward. Further, according to the present invention, in a continuous portion of the front end portion of the upper lid and the insertion piece, a shallow recessed notch is provided at the upper end of the central portion of the insertion piece to form a protruding piece at the front end portion of the upper lid. It is a summary. Further, the gist of the present invention is that a semicircular cut portion is formed in the upper end of the central portion of the side plate located on the front side portion.

With this construction, a ruled line having a substantially V-shape is formed at the center of the insertion piece, and the upper end is connected to the upper end of the substantially C-shaped ruled line surrounded by the substantially C-shaped ruled line. Since the V-shaped ruled line is formed, even if the insert piece is pressed inward by inserting a finger inside the side plate located on the front side when opening the lid, the insert piece is bent into a fixed shape at the ruled line portion. Therefore, it is possible to provide a paper packaging box that can be repeatedly unpacked and used without the problem that irregular folds (wrinkles) occur unlike the conventional example.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings (FIGS. 1 to 4). In the drawings, the same reference numerals as those of the conventional example indicate the same members, the detailed description thereof will be omitted, and the parts different from the conventional example will be described.

In the figure, in the present embodiment, an arc-shaped ruled line (fold line) 13 bulging outward in advance in the central portion of the insertion piece 7 over the entire length in the depth direction of the insertion piece 7 in advance.
V, which is surrounded by the substantially V-shaped ruled line 13 and has its upper end connected to the upper end of the substantially C-shaped ruled line 13.
Character-shaped ruled lines (folds) 14 are formed. That is, the lower end of the substantially C-shaped ruled line 13 reaches the tip of the insertion piece 7, and the upper end of the substantially C-shaped ruled line 13 reaches the continuous portion of the front end of the upper lid 6 and the insertion piece 7. Further, the lower end of the V-shaped ruled line 14 reaches the tip of the insertion piece 7. Further, a shallow notch-like cut 15 is provided at the upper end of the central portion of the insertion piece 7 in the continuous portion of the front end portion of the upper lid 6 and the insertion piece 7 within the width of the upper end of the V-shaped ruled line 14. Thus, the protruding piece 16 is formed at the front end portion of the upper lid 6. In the figure, reference numeral 17 denotes a shallow notch-like cut formed at both ends of the upper lid 6 and both ends of the insertion piece 7 in a continuous portion of the front end portion of the upper lid 6 and the insertion piece 7. In the lid state, the upper ends of both ends of the insertion piece 7 are engaged with the portion of the inner lid 5 at a position close to the continuous portion with the side plate 3. The other configurations are the same as those of the conventional example, and thus detailed description thereof will be omitted.

In the above structure, when the upper lid 6 is opened from the closed state, a finger is inserted into the inside of the reinforcing plate portion 9 which overlaps the inside of the side plate 2 located on the front side at the positions of the cut portions 8 and 10, and the fingers are inserted. The upper lid 6 can be opened by hooking the projection piece 16 with the projection piece 16 and lifting the insertion piece 7. At this time, the insertion piece 7 is pressed inward by inserting a finger inside the reinforcing plate portion 9. As described above, the arcuate ruled line 13 having a substantially C-shape and bulging outward is formed in the central portion of the insertion piece 7, and the upper end is surrounded by the substantially C-shaped ruled line 13 and has a substantially C-shape. By forming the V-shaped ruled line 14 connected to the upper end of the ruled line 13, even if the insertion piece 7 is pressed inward by the finger, the ruled lines 13 and 14 can be bent into a fixed shape. The conventional irregular folds (wrinkles) is no problem that occurs as can provide a paper packaging box 1 that can be used repeatedly unpacked.

In the embodiment shown in the drawings, the upper ends of both ends of the insertion piece 7 are locked to the inner lid 5 portion at a position close to the connecting portion with the side plate 3 in the closed state. , To prevent the top cover 6 from rising without permission,
In the case of such a floating prevention structure, it takes time to open the upper lid 5 and irregular folds (wrinkles) are likely to occur unless the insert piece 7 has the above-described ruled lines 13 and 14, but this embodiment In the form of ruled line 13
Due to the presence of and 14, there is no need for irregular folds (wrinkles) because this portion is bent into a fixed shape. Further, in the embodiment shown in the drawings, the ruled line 13 having a substantially V-shape is formed in an arc shape that bulges outward, but it may be a straight shape.

[0012]

As described above, according to the present invention, a substantially V-shaped ruled line is formed at the center of the insertion piece and the upper end is substantially C-shaped by being surrounded by the substantially C-shaped ruled line. By forming a V-shaped ruled line connected to the upper end of the ruled ruled line, even if the insert piece is pressed inward by inserting a finger inside the side plate located on the front side at the time of opening the lid, the insert piece remains It will be bent into a fixed shape at the part of the ruled line, and irregular creases (wrinkles) as in the conventional example
It is possible to provide a paper packaging box that can be repeatedly unpacked and used without the problem of occurrence of. In addition, as a ripple effect, it leads to improvement of quality and cost reduction, and the effect is great.

[Brief description of drawings]

FIG. 1 is a perspective view showing an open state of a paper packaging box according to an embodiment of the present invention.

FIG. 2 is an enlarged front view of a main part of the paper packaging box.

FIG. 3 is a perspective view showing a closed state of the paper packaging box.

FIG. 4 is a perspective view showing a state where the insertion piece of the paper packaging box is lifted.

FIG. 5 is a perspective view showing an open state of a paper packaging box in a conventional example.

FIG. 6 is a perspective view showing a closed state of the paper packaging box.

FIG. 7 is a perspective view showing a state in which a finger is hooked on the insertion piece of the paper packaging box and lifted.

FIG. 8 is a perspective view showing a state where the insertion piece of the paper packaging box is lifted.

[Explanation of symbols]

1 Paper packaging box A few side plates 4 Bottom plate 6 Upper lid 7 Insert 8 notches 10 Notch 13,14 ruled lines 15 notches 16 protruding piece 17 notches

Continued front page    (72) Inventor Sayuri Nakata             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Jiro Omura             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Satoshi Fujii             5-6-9 Kamishio, Tennoji-ku, Osaka City, Osaka Prefecture               Fuji Packaging Paper Co., Ltd. F-term (reference) 3E060 AA03 AB05 BA04 BC02 BC04                       DA30

Claims (4)

[Claims] 1. A paper packaging box made of paper material such as cardboard and corrugated board, comprising two sets of opposing side plates, a bottom plate portion closing the lower end, and a side plate located at the rear side, which is continuously provided at the upper ends of the side plates. It consists of an upper lid that closes the upper end and an insert piece that is inserted into the front end of the upper lid and that is inserted so as to overlap the inner surface of the upper end of the side plate located on the front side and that maintains the closed state. A V-shaped ruled line is formed over the entire length of the insertion piece in the depth direction, and the upper end is connected to the upper end of the substantially C-shaped ruled line surrounded by the V-shaped ruled line. A paper packaging box characterized by being formed into a letter-shaped ruled line. 2. The paper packaging box according to claim 1, wherein the substantially C-shaped ruled line is formed in an arc shape that bulges outward. 3. In the connecting portion between the front end portion of the upper lid and the insertion piece, a shallow recessed notch is provided at the upper end of the central portion of the insertion piece to form a protruding piece at the front end portion of the upper lid. The paper packaging box according to claim 1, which is characterized in that. 4. The paper packaging box according to claim 1, 2 or 3, wherein a semicircular cutout portion is formed at an upper end of a central portion of the side plate located on the front side portion.