JPH0414343Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] Generally, some packaging boxes are used only once, while others are reused several times.

This invention relates to a packaging box that can be folded and stored after being used as a packaging box, and in which the lid flap does not get in the way of stuffing items when reusing the box.

[Conventional technology]

The 11th packaging box is one of the most commonly used packaging boxes.
As shown in FIGS. 1 to 13, a square cylindrical body is formed from a pair of side walls 31 and a pair of end walls 32, and a rectangular bottom flap 33 is attached to the lower edge of one side wall 31 of the other side wall 31. A large trapezoidal bottom flap 34 that overlaps with the bottom flap 33 is provided on the lower edge, bottom flaps 35 are provided on the lower edges of both end walls 32, and lid flaps 36 are provided on the upper edges of the side walls 31 and end walls 32, respectively. , 37 are arranged in series, and the opposing bottom flaps 35 are provided with a diagonal crease line 38 starting from one end corner of the base, and the outside of this crease line is joined to the adjacent bottom flaps 33, 34 as a glue margin 39. It is known that the bottom surface is foldable.

[The problem that the idea attempts to solve]

This conventional packaging box has the advantage of being able to be folded flat and stored after use, and the bottom can be assembled with one touch when reusing it. There was a problem that the lid flap would fall inward (see Figure 12) and get in the way, making it difficult to put items in.

This idea was created in view of these problems with conventional products, and its purpose was to make it possible to fold it even after it has been used as a packaging box, and to make it possible to fold the lid flap when putting items in it again. The purpose of the present invention is to provide a packaging box that can be folded outward and easily fixed.

[Means to solve the problem]

In order to achieve the above object, the packaging box of this invention separably connects adjacent lid flaps directly above the unjoined portions of adjacent bottom flaps, and at least one of the connected lid flaps. A diagonal fold line is provided starting from the base of the lid flap at the position where it is connected to the lid flap.

[Effect]

Since the packaging box constructed in this manner has a diagonal crease line on the lid flap, it can be sealed by folding the lid flaps together without separating the continuous lid flaps.
When opened, the bottom surface can be folded into a flat body (see Figure 6), and the bottom surface can be restored in one movement.

When the lid flap is folded back to the outside of the body (see Fig. 8), the two adjacent lid flaps are connected and do not swing, and the lid flap is firmly fixed to the body.

〔Example〕

1 to 8 show an embodiment of this invention. As shown in FIG. 1, this packaging box has a wide pair of rectangular side walls 1 made of thick paper such as cardboard, and a narrow pair of rectangular side walls 1. A rectangular cylindrical body is formed from the shaped end wall 2, and four bottom flaps are connected to the lower edge of the body, and four lid flaps are connected to the upper edge. It is made by bending a punched board (see Figure 2).

To explain the above-mentioned punched board in detail, as shown in FIG. A gluing allowance 4 is provided projecting through the vertical fold line 3' extending to the lid flap, and a gluing allowance 4 with a width dimension of approximately 1/2 of the width of the end wall 2 is provided at the lower edge of one side wall 1 via the horizontal fold line 5. A trapezoidal bottom flap 6 is attached to the other side wall 1 at a transverse fold line 5 at the lower edge.
A large trapezoidal bottom flap 7 having a width approximately the same as the width of the end wall 2 is connected through the end wall 2.
Approximately trapezoidal joint bottom flaps 8 are connected to the lower edge of each side wall 1 via a transverse fold line 5, and rectangular lid flaps 10 which abut against each other during sealing are attached to the upper edge of each side wall 1 via a transverse fold line 9. Further, a rectangular inner lid flap 11 having the same width as the lid flap 10 is connected to the upper edge of each end wall 2 via a transverse fold line 9.

The pair of joint bottom flaps 8 are provided with a 45° diagonal fold line 12 starting from the base, that is, one end corner on the horizontal fold line 5, and the triangular shape is joined to the adjacent bottom flap from the outside of this fold line. The glue cost is 13.

In addition, in each lid flap, at a position where the vertical fold line 3' of the bottom flap of the joint where there is no gluing allowance 13 is extended upward, there is a gap between the lid flap 10 and the inner lid flap 11, and between the lid flap 10 and the gluing allowance. A connecting portion 14 is provided between the two and four, and the two are connected to each other. Furthermore, the inner lid flap 11 is provided with a diagonal fold line 15 of 45° starting from the base, that is, the corner of the connecting portion of the transverse fold line 9.

When assembling a packaging box from the punched substrate,
First, attach the gluing allowance 4 to the end wall 2 and inner lid flap 11.
to form a rectangular cylindrical body.

On the other hand, the bottom surface, as shown in Figures 3 and 4,
It is created by attaching the adhesive margin 13 to the lower surfaces of the ends of the adjacent bottom flaps 6 and 7. The bottom surface has a wide bottom flap 7 and one bottom flap 6 overlaps greatly, so it is strong and will not fall out even if the item is heavy.

When this packaging box is folded so that the vertical fold line 3 is located at both ends (see Figure 6), the diagonal fold line 12
Then, the joint bottom flap 8 is folded inward, and both bottom flaps 6 and 7 are folded into the box body using the transverse fold line 5 as a pivot axis to form a completely flat body.

As shown in FIG. 5, when the inner lid flap 11 is first tilted inward, the lid flap 10 is folded down in conjunction with the action of the connecting portion 14 and the diagonal crease line 15, so that the lid flaps 10 face each other. When the lid flaps 10 are butted together (see FIG. 1), a flat top surface can be created. In the case of sealing, it is sufficient to simply attach a short adhesive tape 101 vertically to the portion of the lid flap 10 where the connecting portion 14 is located, as shown in FIG.

A case will be described in which the packaging box is opened and the item is taken out and then reused. The empty box from which the item has been taken out has each lid flap erected, and the body is folded into a flat body so that the vertical fold line 3 is at the edge, and the bottom is also folded (see Figure 6), temporarily folding the body. It has an advantageous appearance without being bulky for storage.

Next, when storing the item in this empty box again, as shown in FIG. As shown in the figure, a pair of vertical fold lines 3
Bring it closer and restore it to the box body. Lid flap 10 and inner lid flap 11 connected at connecting part 14
is bent at a right angle at the connecting portion 14, and tightly circumscribes the side wall and end wall, making it easy to stuff items without getting in the way.

10 and 9 show another embodiment of this invention, and the packaging box of this embodiment has an inner lid flap 1.
1, the side where the connecting portion 14 does not exist, that is, the discontinuous edge with the lid flap 10, is notched diagonally, and the free end corner is notched to give a rounded edge 16. In this packaging box, when the inner lid flap 11 is folded in first during sealing, the lid flap 10 is folded in conjunction with this.
However, since the discontinuous edge of the inner lid flap is notched, there is no contact with the lid flap 10 which falls down, and there is an advantage that the lid flap can be easily folded.

[Effect of idea]

This idea is structured as described above, so
This produces the following effects.

The bottom is foldable and can be folded into a flat body and restored to the box shape in one motion. When reusing, the lid flap can be folded back and fixed to the outside of the body, making it easy to stuff items when reusing. This has the effect of

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of this invention in a sealed state, Fig. 2 is a developed view of the same, Figs. 3 and 4 are a plan view of the same as seen from the bottom, and Fig.
5 is a perspective view showing the top opening state, FIG. 6 is a perspective view showing the same as above in the folded state, and FIGS. 7 and 8 show the lid flap in the folded state. A perspective view of the flat plate, a perspective view of the box body, and FIGS. 9 and 10 are a perspective view of another embodiment of this invention with the top open and a developed view of the main parts.
Further, FIG. 11 is a perspective view of the conventional example in a sealed state, and FIGS. 12 and 13 are a perspective view and a developed view showing the same as the above in an upper open state. 1, 31... side wall, 2, 32... end wall, 8...
Joint bottom flap, 11... Inner lid flap, 12,
15, 38...diagonal fold line, 14...connection part.

Claims (1)

[Scope of utility model registration request] A square cylindrical body is formed from a pair of side walls and a pair of end walls, a bottom flap is provided on the lower edge of the body, a lid flap is provided on the upper edge, and a base is attached to a pair of opposing bottom flaps. In a packaging box that has a diagonal crease line starting from one end corner and joins an adjacent bottom flap with the outside of this crease line as a glue margin to form a foldable bottom surface, it is possible to Adjacent lid flaps are separably connected directly above the non-continuous portion, and at least one of the continuous lid flaps is provided with a diagonal crease line starting from the base of the continuous lid flap. Characteristic packaging box.