JPS6217380Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a packaging box used for transporting goods, etc.

Conventional Structures and Problems Generally, packaging boxes for transportation are designed to be foldable for convenient shipping after use.
It is usually made of cardboard, and when assembled, as shown in Figure 1, the side plate flaps connected to each side of the square bottom plate of the box 1 are attached to the side plates using staples 2.
I'm stopping it. Such items are undesirable in terms of transportation and storage problems, damage to the outer surface or the item, or reuse when unpacking.

Purpose of the invention The present invention takes into consideration the above-mentioned problems, and aims to provide a foldable packaging box that can be reused without damaging the product or its outer surface, and that allows for stable packaging during assembly. It is.

Structure of the Device In order to achieve the above object, the present invention includes a rectangular bottom plate, a pair of side plates with flaps connected to the bottom plate at both ends, and a pair of side plates adjacent to the side plates. Fold it and stack it on the adjacent side plate, and insert the insertion piece at the tip of the flap into the notch provided in the side plate on which the flap is stacked, and insert the insert piece provided at the upper edge of the side plate into the notch formed at the tip of the insertion piece. The packaging box has a structure in which folded pieces are engaged with each other, and the bonding strength at the side plate portion is increased, so that the packaging box does not lose its shape.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 5. In the figure, 3 is a rectangular bottom plate, and each side has side plates 4, 5, which can be folded up freely.
6 and 7 are connected. Said side plates 4, 5, 6, 7
A pair of opposing side plates 5 and 7 have flaps 5a and 7a on both sides, and the flaps 5 and 7 have flaps 5a and 7a on both sides.
Insertion pieces 5b and 7b are provided at the tips of a and 7a, and notches 8 are formed in the insertion pieces 5b and 7b.
These flaps 5a, 7a are bent inwardly at an angle of 90 degrees with respect to the side plates 5, 7, and
6, insert the insertion pieces 5b, 7b at the tips into the grooves 4a, 6a in the center of the other side plates 4, 6, and insert the locking steps 5c, 7c formed on the insertion pieces 5b, 7b into the cut grooves 4a. , 6a, each side plate 4, 5, 6, 7 is connected. the side plate 4,
A bent piece 9 formed of slits and ruled lines is formed on the upper side of 6, and this is bent inward by 180 degrees, and the flap 5 inserted into the grooves 4a and 6a is formed.
The edges of the folded pieces 9 are engaged with the notches 8 of the insertion pieces 5b, 7b of the insert pieces 5a, 7a to open the flaps 5a, 7a.
is completely locked, and the state of the flaps 5a, 7a inserted into the grooves 4a, 6a is stabilized.

The packaging box having the above structure can be formed by punching out a single piece of material as shown in Fig. 5, and can be assembled and folded.
When the insertion pieces 5b, 7b of the flaps 5a, 7a of the side plates 5, 7 are inserted into the cut grooves 4a, 6a of the side plates 4, 6 when connecting the flaps 5, 6, 7, the insertion pieces 5b, 7b of the flaps 5a, 7a are inserted. The locking step portions are engaged with the cut grooves 4a, 6a to ensure the inserted state, that is, the connection. In addition, the side plates 4, 6 and 5, 7 are firmly connected by pushing the edges of the bent pieces 9 of the side plates 4, 6 into the notches 8 of the inserted insertion pieces 5a, 7b. This allows for stable packaging. Also, this side plate 4,
6 flaps 5a and 7a form a two-layer side plate,
The strength of this part is increased and the protection effect of the article is also great.

Effects of the invention As explained in the examples above, the packaging box of the invention has a strong connection between the side panels and their flaps.
It does not lose its shape and can be folded, so it has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional packaging box, Figs. 2 and 3 are partial perspective views of a packaging box according to an embodiment of the present invention, Fig. 4 is a perspective view of the same assembled state, and Fig. 5 is the same. A developed view is shown. 3... Bottom plate, 4a, 6a... Cut groove, 4, 5,
6, 7...Side plate, 5a, 7a...Flap, 5
b, 7b...insertion piece, 5c, 7c...locking stepped portion,
8...notch, 9...bent piece.

Claims (1)

[Scope of utility model registration request] A rectangular bottom plate, and four connected to each side of the bottom plate.
a flap connected to both ends of a pair of opposing side plates among the four side plates and having an insertion piece at the tip; the flap is folded inward and overlapped with the adjacent side plate; Insert the insertion piece formed at the tip of the flap into the cut groove formed in the side plate where the flaps are overlapped, and fold the bent piece provided at the upper center edge of the side plate inward to form the insertion piece at the tip of the flap. A packaging box that engages with a cutout.