JPH08119253A - Packaging case - Google Patents

Abstract

PURPOSE: To connect a case body and a lid case together without any bonding by a method wherein a connecting flap is formed for insertion between an inner surface board and an outer surface board forming the end walls of the case body and a connecting means is formed for connection between the end of the connecting flap and the end of a flap of the case body. CONSTITUTION: An outer flap 17 is formed at each end edge of an outer surface board 12a of a case body for insertion between an inner surface board 13b and an outer surface board 13a and for overlapping the outer face of an inner flap 14 and a hook part 18 is formed at the end of the outer flap. A connecting flap 46 is formed at each end edge of an outwardly foldable lower half part 37 and a hook part 47 is formed at the end of the connecting flap 46 and is caught on the hook part 18 at the end of the outer flap 17. The connecting flap 46 is inwardly folded via a folding line 39 and an inserting flap 48 is inserted between an outer surface board 33a and an inner surface board 33b. The inserting flap 48 is engaged with a notch part 49 of an inner flap 45. Therefore, a case can be formed without any bonding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box suitable for packaging photosensitive materials such as photosensitive paper and photographic film.

[0002]

2. Description of the Related Art Conventionally, as a packaging box of a photosensitive material, there is one shown in FIGS.

This is composed of a body box 1 and a lid box 2 that covers the outer surface of the body box 1, and two parallel side walls that cross the lower half of one side wall 3 of the lid box 2 in the left-right direction. The fold line 4 makes it possible to fold outward, and by attaching the lower half of the side wall 3 of the foldable lid box 2 to the outer surface of the lower half of the side wall 5 of the body box 1, the body box 1 and the lid box It connects with 2.

In the packaging box having the above structure, the side wall 5 of the body box 1 and a part of the side wall 3 of the lid box 2 are connected to each other to form a side wall 3 of the lid box 2.
Since the lid box 2 can be opened and closed by using the fold line 4 formed in the lower half of the box as a hinge, opening and closing is easy, and there is little rattling in the fit between the body box 1 and the lid box 2 and the light shielding property inside the box is achieved. Is good.

[0005]

However, in the packaging box having the above structure, the body box 1 and the lid box 2, the lower half of the side wall 3 of the lid box 2, and the lower half of the side wall 5 of the body box 1 are used. Since they are connected by being attached to the outer surface, it takes a lot of time to attach them, and when the body box 1 and the lid box 2 are attached and connected, it is difficult to disassemble them when they are discarded after use. is there.

Therefore, the present invention is intended to provide a packaging box in which a body box and a lid box can be connected to each other without sticking them together.

[0007]

In order to solve the above problems, the present invention provides a body box having a pair of side walls and a pair of end walls formed on four sides of a rectangular bottom wall, and a rectangular top. On the four sides of the wall,
It consists of a pair of side walls and a pair of end walls formed on the outer surface of the body box, and at least the lower half of one side wall of the box is folded outward by a fold line that crosses in the left-right direction. In the packaging box in which the lower half of the side wall of the lid box is connected to the lower half of the side wall of the body box, the end wall of the body box has a double wall structure of an outer surface plate and an inner surface plate, Provided on both sides of the side wall of the body box are flaps that are sandwiched between an inner surface plate and an outer surface plate that form the end wall of the body box, and the outwardly foldable lower half part formed on the side wall of the lid box. On both sides of, in the state where the lid box is covered with the body box, form a connecting flap to be inserted between the inner surface plate and the outer surface plate forming the end wall of the body box, and the tip of this connecting flap and the body box. The connecting means was formed at the tip of the flap. As the connecting means, hooking with hooks, fitting with unevenness or hook shape can be used.

[0008]

With the above configuration, the flap of the body box is sandwiched between the inner surface plate and the outer surface plate that form the end wall of the body box without connecting the body box and the lid box together, and This can be done by connecting means of connecting flaps of the lid box.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The packaging box of the present invention comprises a body box 10 and a lid box 30 which covers the outer surface of the body box 10.

The body box 10 is assembled by bending a paperboard such as a corrugated board shown in the development view of FIG.

The body box 10 is composed of a rectangular bottom wall 11, a pair of side walls 12 and a pair of end walls 13 provided so as to stand upright at four sides of the bottom wall 11.

The side wall 12 of the body box 10 has a double-walled structure, and is folded to the outer surface plate 12a and the inner surface side thereof, which are connected to the opposite sides of the rectangular bottom wall 11 via fold lines. The inner surface plate 12b is overlaid.

The end wall 13 of the body box 10 also has a double wall structure, and an outer face plate 13a continuously provided on the other side of the rectangular bottom wall 11 facing each other through a fold line, and the outer face plate 13a. Face plate 13
An outer surface plate 13a continuously provided on the upper side of a through a crease line
And an inner surface plate 13b that is folded over to the inner surface side.

On both sides of the inner face plate 12b forming the side wall 12, the inner face plate 13b forming the end wall 13 and the outer face plate 1 are provided.
An inner flap 14 sandwiched between the inner flap 3 and 3a is continuously provided via a fold line. The inner flaps 14 connected to the opposing side walls 12 are formed so that their tips overlap each other, and hook portions 15 that are hooked to each other are formed in the overlapping portions.

One outer surface plate 12 forming the side wall 12
Outer flaps 17 that are sandwiched between the inner surface plate 13b that forms the end wall 13 and the outer surface plate 13a and that overlap the outer surface of the inner flap 14 are formed on both sides of a. A hook portion 18 is formed at the tip of the outer flap 17. In this embodiment, the outer flap 17 is not provided on the other outer plate 12a, but the outer flap 17 may be provided on the other outer plate 12a. Further, although the outer flap 17 is not necessarily provided, the provision of the outer flap 17 has an advantage that the light shielding property is improved.

On both sides of the upper side of the inner surface plate 12b which is folded on the inner surface side of the other outer surface plate 12a which does not have the outer flap 17, and on the upper side of the inner flap 14 which is connected to both side edges of the inner surface plate 12b. A right-angled corner projection 19 is formed at an end portion on the inner surface plate 12b side so as to project upward from the upper side of the inner surface plate 12b and the inner flap 14. Also, the end wall 13
At one end of the crease line between the outer surface plate 13a and the inner surface plate 13b, the corner projection 19 formed on the upper side of the inner flap 14 is projected so as to protrude above the upper side of the end wall 13. 20 are formed. This corner protrusion 19
Forms an outer flap 17 that is sandwiched between the inner surface plate 13b of the end wall 13 and the outer surface plate 13a on both sides of the other outer surface plate 12a, and a corner portion of the outer flap 17 and the outer surface plate 12a. It may be provided in the.

At the lower ends of both sides of the inner surface plate 13b forming the end wall 13, there are formed locking portions 21 protruding laterally, and the lower ends of the fold lines on both sides of the inner surface plate 12b forming the side wall 12 are formed. A notch 22 into which the locking portion 21 is fitted is formed in the. A finger hook 23 is formed at the center of the lower side of the inner surface plate 13b forming the end wall 13.

The body box 10 constructed as described above is assembled in the following manner.

First, after folding the inner surface plate 12b on the inner surface of the outer surface plate 12a forming the side wall 12, the inner surface plate 12b is raised while the outer surface plate 12a is erected at a right angle to the bottom wall 11.
Bend the inner flaps 14 on both sides of the
Hook the hook portions 15 at the tips of each other. Then, after the outer flaps 17 that are continuously provided on both sides of one outer surface plate 12a of the side wall 12 are folded over the outer surface of the inner flap 14, the outer surface plate 13a that forms the end wall 13 is attached to the bottom wall 11. And the inner surface plate 13b continuously provided on the upper side of the outer surface plate 13a is folded inward, and the inner flap 1 of the side wall 12 is formed by the inner surface plate 13b and the outer surface plate 13a.
4 and the outer flap 17 are sandwiched, and the inner surface plate 12 forming the side wall 12 is provided with the engaging portions 21 at the lower ends of both sides of the inner surface plate 13b.
When fitted in the cuts 22 at the lower ends of both sides of b, the body box 1
Assembly of 0 is completed. However, the inner surface plate 13b and the outer surface plate 13a that form the end wall 13 are bent only when the side wall 12 is bent.
This is performed after connecting the lid box 30 to the outer flap 17 of the. This will be described later.

Next, the lid box 30 is shown in the development view of FIG.
It is assembled by folding a paperboard such as corrugated board.

The lid box 30 is composed of a rectangular top wall 31, a pair of side walls 32 and a pair of end walls 33 provided at right angles to the four sides of the top wall 31.

One of the pair of side walls 32 of the lid box 30 has a double wall structure, and an outer surface plate 32a continuously provided on one side of the ceiling wall 31 via a fold line, and The outer surface plate 3 continuously provided on the lower side of the outer surface plate 32a through a fold line.
The inner surface plate 32b is folded over the inner surface of 2a. At the lower side of the inner surface plate 32b, a top wall inner plate 34, which is folded over the inner surface of the top wall 31, is continuously provided via a fold line. A finger hook 35 is formed by a through hole at the center of the fold line provided between the outer surface plate 32a and the inner surface plate 32b. Further, as shown in FIG. 6 and FIG. 7, at both corners of the tip side of the ceiling wall inner plate 34,
When the body box 10 is covered with the lid box 30, a notch portion 36 is formed into which the corner protrusions 19 provided at the corner portions of the upper side of one side wall 12 and the upper side of the end wall 13 of the body box 10 are fitted. By fitting the corner projections 19 of the body box 10 into the notches 36 of the top wall inner plate 34 of the lid box 30,
There is an advantage that the light shielding property is improved. The top wall inner plate 34 may be provided continuously to the side of the inner surface plate 33b of the end wall 33 described later.

The other side wall 32 of the lid box 30 is the top wall 3
It is continuously provided on the other side of 1 through a fold line.
The lower half portion 37 of the side wall 32 is formed so as to be able to be folded back outward by two parallel fold lines 38 and 39 that cross in the left-right direction.

The end wall 33 of the lid box 30 has a double wall structure, and an outer surface plate 33a is continuously provided on both end sides of the ceiling wall 31 through a fold line, and a fold line is formed on a lower side of the outer surface plate 33a. It is composed of an inner surface plate 33b which is continuously provided via a wire and which is folded over the inner surface side of the outer surface plate 33a. A finger hook 40 is formed at the center of the lower side of the inner surface plate 33b. In addition, the locking portions 4 protruding downward are provided on both sides of the finger hooking portion 40.
1 is formed, and the locking portion 41 is adapted to fit into the cutout portions 42 formed on both sides of the top wall inner plate 34. A locking portion 43 protruding laterally is formed at the lower end of one side of the inner surface plate 33b, and the side wall 3 of the double wall structure is formed.
A notch portion 44 into which the locking portion 43 is fitted is formed at the lower ends of both sides of the inner surface plate 32b forming part 2.

An outer surface plate 33 forming an end wall 33 is formed on each side of the outer surface plate 32a forming the side wall 32 of the double wall structure.
An inner flap 45 sandwiched between a and the inner surface plate 33b is continuously provided via a fold line.

A side wall 3 formed so as to be able to be folded outward.
On both sides of the lower half portion 37 of the second connecting flap 46, a connecting flap 46 that is folded back outward through a fold line is formed, and at the tip of the connecting flap 46, the outer flap 17 that extends from the side wall 12 of the body case 10 is formed. A hook portion 47 that is hooked on the hook portion 18 at the tip of is formed.

The side wall 32 having the connecting flap 46 is bent inwardly through the fold line on both sides of the upper part of the upper fold line 39 of the two parallel fold lines 38, 39. An outer surface plate 33a forming the end wall 33
Flap 4 inserted between the inner surface plate 33b and
8 is formed, and the insertion flap 48 is adapted to fit into the cutout portion 49 of the inner flap 45 that is continuously provided on both sides of the outer surface plate 32a of the side wall 32 of the double wall structure. The insertion flap 48 does not necessarily have to be provided, but when the insertion flap 48 is formed, a corner wall is formed between the side wall 32 and the top wall 31 which are formed so as to be capable of being folded back. The light-shielding property of is improved.

The lid box 30 constructed as described above is assembled in the following manner and is connected to the body box 10.

First, after bending the outer surface plate 32a forming the side wall 32 of the double wall structure at a right angle to the ceiling wall 31, the inner surface plate 32b is folded and folded on the inner surface of the outer surface plate 32a. The wall inner plate 34 is folded over the inner surface of the ceiling wall 31. Next, the inner flaps 45 on both sides of the outer surface plate 32a are bent along both sides of the top wall 31, and the insertion flaps 48 on both upper ends of the other side wall 32 are folded on the inner flap 4.
5, the outer surface plate 33a and the inner surface plate 33b forming the end wall 33 are sequentially bent, and the inner flap 45 and the insertion flap 48 are bent.
Is sandwiched between the outer surface plate 33a and the inner surface plate 33b, the locking portion 41 on the lower side of the inner surface plate 33b is fitted into the notch portion 42 of the ceiling wall inner plate 34, and the side surface of the inner surface plate 33b is locked. The notch 4 of the inner surface plate 32b forming the side wall 32
Fit in 4.

Then, as shown in FIGS. 3 and 4, the lower half portion 37 of the side wall 32 of the lid box 30 which is provided so as to be able to be folded outward is folded back to the outside by two fold lines 38 and 39. Bending the connecting flaps 46 on both sides thereof at a right angle with respect to the lower half portion 37, and hooking the hook portion 47 at the tip of the connecting flap 46 into the outer surface plate 13a and the inner surface plate 13b that form the end wall 13 of the box 10. The outer flap 1 connected to the outer surface plate 12a forming the side wall 12 of the body box 10.
When the outer surface plate 13a and the inner surface plate 13b forming the end wall 13 of the body box 10 are folded in, the body box 10 and the lid box 30 are connected to each other as shown in FIG. It is assembled in the closed condition. Side wall 12 of the body box 10
When the outer flap 17 is not continuously connected to the outer surface plate 12a that forms the box, the hook portion 47 of the connecting flap 46 of the lid box 30 is continuously connected to the side surface of the inner surface plate 12b of the body box 10. The lid box 30 can be connected to the body box 10 by hooking on the hook portion 15 of the inner flap 14.

If the above assembling order is reversed, the assembled body box 10 and lid box 30 can be separated, and further, the body box 10 and lid box 30 can be developed into a single paperboard. it can.

[0033]

As described above, according to the present invention, the body box and the lid box that is openably and closably connected to the body box can be connected to each other without sticking them together. It is easy and can be disassembled.

Further, insert flaps to be inserted between the inner surface plate and the outer surface plate of the end wall are formed on both sides of the upper portion of the side wall of the lid box which is formed so as to be capable of being folded back, or the side wall and the end wall of the body box are inserted. When a corner protrusion is formed on the corner of the upper side and a notch is formed on the inner wall of the top wall that overlaps the inner surface of the top wall of the lid box, the notch for fitting the corner protrusion of the body box is formed. Since the light-shielding property between and becomes good, it can be suitably used as a packaging box for a photosensitive material.

Further, as described above, regardless of the bonding,
Since the body box and lid box can be connected, it is easy to dismantle the packaging box that is no longer needed after use, making it suitable for recycling and also a synthetic resin adhesive for bonding. It is also an eco-friendly packaging box that does not require.

[Brief description of drawings]

FIG. 1 is a development view of a body box according to the present invention.

FIG. 2 is a development view of a lid box according to the present invention.

FIG. 3 is a perspective view showing a process of assembling the body box and the lid box.

FIG. 4 is a perspective view showing a process of assembling the body box and the lid box.

FIG. 5 is a perspective view showing a state in which the body box and the lid box are connected and the lid box is opened.

FIG. 6 is a perspective view showing a corner protruding portion formed on the body box.

FIG. 7 is a cross-sectional view showing a corner projection portion formed on the body box.

FIG. 8 is a perspective view of a conventional example.

FIG. 9 is a perspective view showing a part of a conventional lid box.

FIG. 10 is a perspective view showing a part of a conventional body box.

[Explanation of symbols]

 10 body box 11 bottom wall 12 side wall 12a outer face plate 12b inner face plate 13 end wall 13a outer face plate 13b inner face plate 14 inner flap 15 hook part 17 outer flap 18 hook part 19 corner protrusion 30 lid box 31 top wall 32 side wall 32a outer plate 32b inner surface plate 33 end wall 33a outer surface plate 33b inner surface plate 36 notch portion 37 lower half portion 38, 39 fold line 45 inner flap 46 connecting flap 47 hook portion 48 insertion flap

Claims (3)

[Claims] 1. A body box in which a pair of side walls and a pair of end walls are formed on four sides of a rectangular bottom wall, and a pair of side walls and a pair of end walls are formed on four sides of a rectangular top wall. In addition, at least the lower half of one side wall of the lid box can be folded outward by a fold line that crosses in the left-right direction, and the lower half of the side wall of the lid box. In the packaging box connecting the lower part to the lower half of the side wall of the body box, the end wall of the body box has a double wall structure of an outer surface plate and an inner surface plate, and the body side wall A flap sandwiched between an inner plate and an outer plate forming the end wall of the box is provided, and the lid box is attached to both sides of the outwardly foldable lower half formed on the side wall of the lid box. In the covered state, a connecting flap to be inserted between the inner surface plate and the outer surface plate forming the end wall of the body box is formed, and the connecting flap is formed. A packaging box characterized in that a connecting means is formed at the tip of the box and the tip of the flap of the body box. 2. The both side walls of the lid box have a double wall structure of an outer surface plate and an inner surface plate, and one side wall of the both side walls of the lid box having a lower half portion that can be folded outward. At the upper ends of both sides of the lid box, insert flaps that are inserted between the inner and outer plates that form the end wall of the lid box are formed, and the end wall of the lid box is formed on both sides of the other side wall of the lid box. The packaging box according to claim 1, wherein a flap sandwiched between the inner surface plate and the outer surface plate is formed, and a cutout portion into which the insertion flap is fitted is formed in the flap. 3. A top wall inner plate is superposed on an inner surface of the top wall of the lid box by forming corner protrusions protruding upward at corners of the upper side wall and the upper side end wall of the body box. The packaging box according to claim 1 or 2, wherein a cutout portion into which the corner protrusion is fitted is formed in a corner portion of the inner wall of the ceiling wall.