JPS5834008Y2 - cardboard packaging box - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cardboard packaging box.

In the conventional cardboard packaging box, which has front and rear folding pieces and left and right folding pieces arranged in a row on the upper opening edge of the packaging box,
To close the lid by folding these folding pieces, first fold one short side folding piece, then fold the other long side folding piece on top of it, and use a belt to tighten it. If you use belts or adhesive tape to secure the packaging, or if you do not use such belts or adhesive tape, fold the last folded piece over and over in either direction, and fold the last folded piece into the front folded piece. This is solved by folding them into the bottom surface and engaging and fixing them together.

However, among the means for closing this type of corrugated cardboard packaging box that does not use belts or adhesive tape, in the case of the means described above in which the folding pieces are stacked one on top of the other in order, the folding means using the last folding piece and the first folding piece is This is usually done forcibly, and as a result, the folding piece itself not only bends and gets damaged, but also cannot be repeated frequently.

Furthermore, when closing a packaging box containing a large number of stored items, each of the folding pieces that are folded over each other rises up, making it difficult to achieve an accurate closing effect.

The present invention was devised in view of the above-mentioned points, and allows for simple, quick and reliable closing of the lid without damaging each folding piece, as well as being able to withstand repeated use. We provide cardboard packaging boxes.

An embodiment of the present invention will be described with reference to the accompanying drawings. 1 is a cardboard packaging box, and the folding pieces 2a, 2b and the left and right folding pieces 3a, 3b are successively arranged on the outer periphery of the upper opening edge of the box, Among them, the front and rear folding pieces 2a and 2b are bent from the position of the folding line X to close the opening.

Further, the left and right folding pieces 3 a and 3 b are bent from the position of the folding line W and are superimposed on the upper surfaces of the left and right sides of the bent front and rear folding pieces 2 a and 2 b.

4 and 4' are insertion heads protruding from the front and rear upper ends of the left and right folding pieces 3a and 3b, and 5 and 5' are approximately U-shaped retaining holes provided on both left and right sides of the front and rear folding pieces 2a and 2b. , front and rear folding pieces 2
Introductory eaves pieces 6 are cut and formed at positions closer to the inside of the front and rear folding pieces 2a and 2b so as to widen toward the front and rear ends of the front and rear folding pieces 2a and 2b while being slightly inclined in an arc shape.

Reference numeral 8 denotes a guide tongue piece for opening and closing the engagement holes 5, 5, which is a substantially U-shaped retaining piece (a fold line y connecting the front and rear cut ends of L5, 5').
It is folded into the inside of the box at an angle from the position of .

7 are retaining holes 5, 5' on the folding line X side of the front and rear folding pieces 2a, 2b.
9 is a left and right folding piece 3a,
3b, the left and right folding pieces 3a, 3b are folded from the position of the folding line 2 where the left and right folding pieces 3a, 3b are folded, and then inserted. Head 4,
4' is inserted into the engagement holes 5, 5', the engagement jaws 9 engage and fix the engagement protrusions 7.

After putting the required items into the interior of the cardboard packaging box 1, first fold the front and rear folding pieces 2a and 2b inward from the fold line X to close the top of the box, and then fold the left and right folds. Piece 3 a,
3b inward from folding line W to create front and rear folding pieces 2a, 2
Cover the top of both sides of b.

At that time, the folding lines 2 formed on the left and right folding pieces 3a and 3b are pre-tightened.
From the position, bend the insertion heads 4, 4' of the left and right folding pieces 3a, 3b to bend forward,
．． Push the tip of 4' toward the inner surface of the introduction eaves piece 6 as shown in FIG.

Then, the insertion heads 4, 4' are smoothly pushed into the interior of the box while being guided by the guide tongue piece 8 which is folded into the interior of the box in an inclined manner from the position of the fold line y, and further, as shown in FIG. As shown in the figure, press the part marked by the fold line 2 from above.

As a result, the left and right folding pieces 3a,
The engaging jaws 9 provided at the front and rear ends of 3b are engaged and supported in abutting manner as shown in FIGS. 3-4 and 8.

Therefore, the insertion heads 4, 4 of the left and right folding pieces 3a and 3b
′ is due to the characteristic of the cardboard material that a return elastic force that resists bending acts, and the reaction in the direction of retreating and pulling out causes the engagement protrusion 7 and the engagement jaw 9 to engage in a butting manner. The situation is further strengthened, and the packaging box 1 can be closed easily and quickly.

However, even though an upward pushing force is exerted by the contents stored inside the box, this pushing force acts on the lower surface of the tips of the insert heads 4, 4' that are pushed into the interior of the box in an inclined manner, causing the engagement. Hold the situation even more firmly.

In addition, FIGS. 5 and 6 show another modification example in which the engaging protrusion 7 and the engaging jaw 9 shown in FIGS. 3 and 4 are butted and supported, and the engaging protrusion 7 is placed on the upper surface side. , the retaining jaw portion 9 is submerged under the lower surface side, and the two are firmly engaged and held.

The present invention provides a cardboard packaging box in which the front and rear folding pieces 2a, 2b and the left and right folding pieces 3a, 3b are arranged in a bendable manner on the upper opening edge of the packaging box 1 as described above.
Insert heads 4, 4' and engagement jaws 9 are provided on b, and engagement holes 5, 5', guide tongue pieces 8, and engagement protrusions 7 are provided on front and rear folding pieces 2a, 2b. 5, 5' are inserted into the insertion heads 4 and 5', and the engaging jaws 9 are engaged and supported by the engaging protrusions 7. The lid can be simply, reliably and quickly closed using the front, rear, left and right folding pieces themselves, without relying on external materials such as bands or adhesive tapes.

In addition, even if a large amount of items are stored in the packaging box and the lid is closed in a push-in manner, the engaging jaws 9 on the insertion heads 4, 4' side will not engage with the engaging holes 5, 5'. The left and right folding pieces 3a, 3b are engaged and supported by the protrusion 7, so that the left and right folding pieces 3a, 3b are maintained in a firm state of engagement against the pulling force.

Therefore, the lid will not open unless the operator consciously lifts the lid in a direction to release the engaged state, and therefore, the reliability of maintaining the lid in the closed state is excellent.

In addition, the handling operation is performed by bending the insertion heads 4, 4', which are inserted into the engagement holes 5, 5', forward from the bending line 2 in advance.
The engaging protrusion 7 can be inserted into the engaging holes 5, 5' along the obliquely bent guide tongue piece 8, or by further pressing from above the fold line 2. Since the engaging jaw portion 8 is fitted quickly and reliably, it contributes to the ease of handling and to improvements in labor saving and speeding up of the work.

In addition, the left and right folding pieces 3a, in the reverse order from when closing the lid,
Not only can the lid be opened by pulling up 3b, but even if the top lid is opened and closed over and over again, the folding pieces on the front, back, left, and right sides will not be damaged, and it can be used repeatedly as a cardboard packaging box. It brings about controversial effects such as being able to deal with reuse.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing how the lid of a cardboard packaging box is closed, Figure 2
The figure is a perspective view when the lid is closed, FIG.
, 6 are a plan view and a perspective view showing a modified example corresponding to FIGS. 3 and 4, and FIGS. 7 and 8 show a case where the engaging protrusion and the retaining jaw are deeply engaged. FIG. 2 is a cross-sectional view showing the state of engagement between the insertion head and the engagement hole. 1... Packaging box, 2... Front and rear folding pieces, 3
... Left and right folding pieces, 4 ... Insert head, 5
...Engagement hole, 6...Introduction eaves piece, 7...
...Engaging protrusion, 8...Guide tongue piece, 9...
...Engaging jaw.

Claims (3)

[Scope of utility model registration request] (1) In a cardboard packaging box in which the front and rear folding pieces 2a, 2b and the left and right folding pieces 3a, 3b are arranged in a bendable manner on the upper opening edge of the packaging box 1, the left and right folding pieces 3a, 3b are provided at the front and rear of the upper ends. In addition to providing insertion heads 4 and 4', left and right folding pieces 3 are provided.
Retaining jaws 9 are provided at the front and rear ends of the front and rear folding pieces 2a and 3b, and retaining jaws 9 are provided on both the left and right sides of the front and rear folding pieces 2a and 2b, and the retaining jaws 9 are cut and formed so as to expand toward the front and rear ends. Matching hole 5,
5', and a guide tongue piece 8 which is folded into the interior of the packaging box 1 in an inclined manner from the position of the fold line y connecting the front and rear cut ends of the engagement holes 5, 5', and the front and rear fold pieces 2a, An engaging protrusion 7 is provided at the cut end of the retaining hole 5, 5' on the side of the fold line X of 2b, and the left and right fold pieces 3a, 3b are folded from the position of the fold line 2, Bend it forward and insert its tip insertion head 4, 4' along the guide tongue piece 8 into the engagement hole 5, 5'.
At the same time, the retaining jaws 9 at the front and rear ends of the left and right folding pieces 3a, 3b can be engaged and fixed with the engaging protrusions 7 provided at the front and rear ends of the engagement holes 5, 5'. A cardboard packaging box characterized by comprising: (2) Practical Application Registration A corrugated cardboard packaging box according to claim 1, characterized in that the engaging protrusion 7 and the engaging jaw 9 are butted and supported. (3) Scope of Utility Model Registration In the cardboard packaging box described in claim 1, the engaging protrusion 7 is on the upper surface side, and the locking jaw portion 9
A corrugated cardboard packaging box characterized by holding and supporting.