JP4676326B2 - Packaging box with one-touch opening function - Google Patents

Description

  The present invention relates to a cardboard packaging box used for packaging various products, which has a one-touch opening function.

  In general, as shown in FIG. 6, a packaging box for home appliances or the like is frequently used. This packaging box is provided with a so-called double lock mechanism in which a lid plate 52 is connected to the rear upper end of the peripheral wall 51 so as to be freely opened and closed, and the closed lid plate 52 is double-locked and sealed.

  As the double lock mechanism, a bent piece 53 is provided at the tip of the lid plate 52, and an insertion hole 55 is formed at the base of the inner lid 54 extending from the front upper end of the peripheral wall 51.

  Further, an insertion piece 57 is provided at the tip of the swing piece 56 formed by cutting the peripheral wall 51 from the upper end of the front portion, and an insertion hole 58 for cutting into the cover plate 52 is formed at the base of the bent piece 53. Has been.

  When sealing, the cover plate 52 is closed, the bent piece 53 is inserted into the insertion hole 55, and then the insertion piece 57 is inserted into the insertion hole 58 as the swinging piece 56 swings. Such a double lock type packaging box is described in, for example, Patent Document 1 below.

Japanese Utility Model Publication No. 6-21850

  However, in the double lock type packaging box as described above, when unsealing, a finger is put on the insertion piece 57 through the notch portion of the cover plate 52, and the insertion piece 57 is slid forward to insert it. There is a problem that it takes time to open the cover plate 52 because the cover plate 52 must be raised by pulling out from the hole 58 and then pulling the bent piece 53 upward from the insertion hole 55.

  Accordingly, an object of the present invention is to provide a packaging box that can be unlocked and opened by one touch.

  In order to solve the above-mentioned problem, the packaging box according to the present invention includes two crease lines in the insertion piece of the swing piece formed by cutting the front portion of the peripheral wall, and the middle of the insertion piece with the crease line as a boundary. A finger hook part is provided on each side, and side folding parts are provided on both sides, and a folded piece connected to the tip of the lid plate is folded on the back side of the lid plate, and an insertion piece is inserted between the lid plate and the folded piece through an insertion hole. , Place the through hole of the bent piece below the finger hook, place the side fold on the bent piece on both sides of the through hole, lock the lid plate, and press the finger hook, The side folding part was bent along the crease line, the side folding part and the bent piece were disengaged, and the cover plate was automatically opened by the repulsion of the bent piece.

  In addition, the two crease lines put in the insertion piece are inclined so that the interval becomes narrower toward the tip of the insertion piece, so that the side folding portion is easily bent at the time of opening.

  Furthermore, the finger hook part of the insertion piece is protruded from the side folding part to the tip side, a receiving piece facing the through hole of the bent piece is provided, and the protruding part of the finger hanging part is placed on the receiving piece and the cover plate is By locking, the sealing property is improved, and when the finger hooking portion is pushed, the receiving piece is bent, and the engagement between the protruding portion of the finger hooking portion and the receiving piece is released.

  In addition, the front flap connected to the front upper end of the peripheral wall is cut to form an insertion piece, the side flap extending from the side upper end of the peripheral wall is bent inward, and the front flap is overlaid on the front flap. The folded piece of the cover plate is overlapped with the cover plate, and the urging force in the standing direction of the cover plate is strengthened by the repulsion of the bent piece with respect to the front flap.

  In this packaging box, just by pressing the finger hook part, the engagement between the side fold part and the bent piece is released, and the engagement between the protruding part of the finger hook part and the receiving piece is released. Since the cover plate is automatically opened by the repulsion, it can be easily opened with one hand, and the troublesomeness at the time of taking out the product is eliminated.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIG. 1, in the cardboard blank of this packaging box, side plates 2 are continuously provided on both sides of a front plate 1, and a rear plate 3 and a passage piece 4 are sequentially provided on one side plate 2. A bottom plate 5 is connected to the lower ends of the front plate 1 and the rear plate 3, a bottom plate 6 is connected to the lower end of the side plate 2, a side flap 7 is connected to the upper end of the side plate 2, and a front flap 8 is connected to the upper end of the front plate 1. Are connected to each other. Further, a lid plate 9 and a bent piece 10 are sequentially provided on the upper end of the rear plate 3.

  The front plate 1 is cut from the upper end to form a swing piece 11, and the front flap 8 is cut at the tip of the front plate 1, and an insertion piece 12 is provided. Two crease lines 13 that are inclined so as to be narrowed toward the tip end are inserted in the insertion piece 12, and the finger hook portion 14 is provided in the middle of the insertion piece 12 with the crease line 13 as a boundary. Side folds 15 are provided on both sides. The tip of the finger hook 14 protrudes in an arc shape from the side fold 15.

  An insertion hole 16 that cuts into the cover plate 9 is formed at the base of the bent piece 10, and the insertion hole 16 communicates with a through hole 17 provided in the bent piece 10. The through hole 17 is provided with a receiving piece 18 that protrudes from the opposite edge of the cover plate 9 toward the cover plate 9, and the base end of the receiving piece 18 has a slight distance from the end edge of the through hole 17. A ruled line in the width direction is entered at the cut position.

  To assemble the blank and wrap the product, as shown in FIG. 2, the front plate 1, the pair of side plates 2 and the rear plate 3 are bent into a rectangular tube shape, and the passage piece 4 is attached to the opposite side plate 2. Then, a peripheral wall is formed, the bottom plates 5 and 6 are bonded together, the bottom plates 5 are engaged with each other, and the bottom surface is closed.

  Then, the product is stored in the box, and as shown in FIG. 3, the side flap 7 is folded inward, the front flap 8 is overlaid thereon, the folded piece 10 is folded to the back side of the lid plate 9, and the front flap 8 is folded. The folded piece 10 is overlaid on the cover plate 9, the cover plate 9 is closed, and the swing piece 11 is swung between the cover plate 9 and the bent piece 10 through the insertion hole 16 as the swing piece 11 swings. insert.

  As a result, the side folding portion 15 is placed on the bent piece 10 on both sides of the through-hole 17, the protruding portion of the finger hook portion 14 is placed on the receiving piece 18, and the lid plate 9 is closed. Since it is locked in a state, the packaging box is securely sealed.

  On the other hand, when opening the packaging box, as shown in FIG. 4, when the finger hook portion 14 of the insertion piece 12 exposed from the cut portion of the cover plate 9 is pressed, the finger hook portion 14 is positioned downward. The side folding portion 15 is bent upward along the crease line 13, the side folding portion 15 and the bent piece 10 are disengaged, the receiving piece 18 is bent, and the finger hook portion The engagement between the protruding portion 14 and the receiving piece 18 is also released.

  Then, as shown in FIG. 5, the cover plate 9 is automatically opened by the repulsion of the bent piece 10. At this time, due to the repulsion of the bent piece 10 with respect to the front flap 8, the urging force of the cover plate 9 in the standing direction is strengthened, and the cover plate 9 stands up so as to jump up without being opened by hand. The packaging box can be easily opened with one hand.

  In this embodiment, the front flap 8 is overlaid on the side flap 7, but the front flap 8 is folded to the back side of the front plate 1 and the folded piece 10 is directly overlaid on the side flap 7. An effect of automatically opening the cover plate 9 due to the repulsion of the bent piece 10 can be obtained. Even if the front flap 8 is omitted, the same effect can be obtained.

  In addition, in this embodiment, the peripheral wall is exemplified as a rectangular tube, but the upper portion of the front plate and the tip portion of the cover plate are configured as described above even in a packaging box such as a hexagonal tube or an octagonal tube. Thus, a similar one-touch opening function can be provided.

The figure which shows the blank of the packaging box which concerns on embodiment of this invention Perspective view showing the assembly process The perspective view which shows the sealing state same as the above Perspective view showing the opening process The perspective view which shows an open state same as the above The perspective view which shows the sealing state of the conventional packaging box

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front plate 2 Side plate 3 Rear plate 4 Passage piece 5 Bottom plate 6 Bottom plate 7 Side flap 8 Front flap 9 Cover plate 10 Folding piece 11 Swing piece 12 Insertion piece 13 Folding line 14 Finger hook part 15 Side folding part 16 Difference Insert hole 17 Through hole 18 Receiving piece

Claims (4)

  A lid plate 9 is connected to the rear upper end of the peripheral wall so as to be openable and closable, and an insertion piece 12 is provided at the tip of a swinging piece 11 formed by cutting the front portion of the peripheral wall from the upper end. 10 is formed continuously to form an insertion hole 16 that cuts from the base of the bent piece 10 into the cover plate 9, the cover plate 9 is closed, and the insert piece 12 is inserted as the swing piece 11 swings. In the packaging box to be inserted and sealed in the hole 16, two crease lines 13 are inserted into the insertion piece 12, with the crease line 13 as a boundary, a finger hook portion 14 in the middle of the insertion piece 12, and side folding portions on both sides 15 is provided, the bent piece 10 is folded to the back side of the cover plate 9, the insert piece 12 is inserted between the cover plate 9 and the bent piece 10 through the insertion hole 16, and the lower side of the finger hook portion 14. The packaging box is characterized in that the through hole 17 of the bent piece 10 is positioned on the side, and the side folding portion 15 is placed on the bent piece 10 on both sides of the through hole 17 to lock the lid plate 9.   2. The packaging box according to claim 1, wherein the two crease lines 13 placed in the insertion piece 12 are inclined so as to be narrowed toward the tip of the insertion piece 12. .   In the packaging box according to claim 1 or 2, the finger hook part 14 of the insertion piece 12 protrudes from the side folding part 15 to the tip side, and a receiving piece 18 facing the through hole 17 of the bent piece 10 is provided. A packaging box, wherein the protruding portion of the finger hook portion 14 is placed on a receiving piece 18 to lock the lid plate 9.   The packaging box according to any one of claims 1 to 3, wherein the front flap 8 connected to the front upper end of the peripheral wall is cut to form the insertion piece 12, and the side flap 7 extending from the side upper end of the peripheral wall is disposed inside. A packaging box, wherein the front flap 8 is overlaid on the front flap 8 and the bent piece 10 of the lid plate 9 is overlaid on the front flap 8.

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