Coincidence lock and packaging box equipped with the same

Abstract

To provide a stacked lock which improves quickness of carriage by making a packaging box folded flat to facilitate carriage, and which can save a space for a storage place, and to provide a packaging box including the same.SOLUTION: A stacked lock for a packaging box 100 is for bringing opposing surfaces closer and fixing them with each other in a state where the packaging box 100 is folded flat. The packaging box 100 has a rectangular parallelepiped shape formed of a pair of flap constituting surface parts 1F, 2F; a pair of long side surface parts 11, 14; and a pair of short side surface parts 12, 13. The packaging box includes and a first fragile line WL1 formed at one end part of an edge side L3 existing between one long side surface part 11 out of the pair of long side surface parts 11, 14 and a flap part 211 extending to one side from there.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a polymerization lock for fixing facing surfaces in a state where a packaging box is folded into a flat shape so as to be close to each other, and a packaging box having the same.

Background Art

[0002] Conventionally, in the process of distributing goods, packaging boxes such as cardboard boxes (hereinafter, also simply referred to as packaging boxes) for packaging and storing goods so as not to get dirty or damaged are widely used. After unpacking, the packaging box is folded into a flat shape for reuse or disposal and then carried to a predetermined storage location. However, since the packaging box is often made of cardboard, a repulsive force acts in the folded state, creating a space inside and making it bulky. Therefore, it may be difficult to carry or unnecessarily narrow the storage space. This becomes more prominent as the number of packaging boxes increases.

[0003] Therefore, for example, Patent Documents 1 and 2 disclose a polymerization lock for a packaging box that is devised so that facing surfaces engage with each other when the packaging box is folded into a flat shape.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, generally, a series of operations for unpacking a packaging box, folding it into a flat shape, and carrying it to a predetermined storage location require speed. However, this is not sufficiently ensured by the polymerization locks described in Patent Documents 1 and 2, and there is still room for improvement in the configuration of the polymerization lock of the packaging box.

[0006] An object of the present invention is to provide a polymerization lock for a packaging box that improves the speed of carrying by making it easy to carry a packaging box folded into a flat shape, can save space with respect to a storage location, a packaging box equipped with the same, and a blank of the packaging box.

Means for Solving the Problems

[0007] The polymerization lock of the packaging box according to the present invention is for fixing the opposing surfaces in close proximity to each other in a state where the packaging box is folded into a flat shape. The packaging box has a rectangular parallelepiped shape with a pair of flap configuration faces, a pair of long side faces, and a pair of short side faces. It is characterized by having a first weak line formed at one end of an edge between one of the pair of long side faces and a flap portion extending from one side thereof.

[0008] The packaging box according to the present invention is equipped with the polymerization lock of the packaging box according to the present invention.

Effects of the Invention

[0009] According to the present invention, in a packaging box folded into a flat shape, the opposing faces can be easily fixed in close proximity to each other, so that the formation of a space inside due to the repulsive force is suppressed, and it becomes difficult to bulge. Therefore, it becomes easy to carry the folded packaging box and it becomes possible to carry it quickly. In addition, since the bulging is reduced, space can be saved with respect to the storage location.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0011] Hereinafter, modes for carrying out the present invention will be described in detail with reference to FIGS. 1 to 5. However, the present invention is not limited to the aspects of this mode.

[0012] In addition, in the description of this specification and the claims, "rectangle" includes rectangles, substantially rectangles, as well as squares and substantially squares, and "cuboid" includes cuboids and substantially cuboids.

[0013] Furthermore, in the description of this specification and the claims, "package" refers to a packaging box in a state where an article is accommodated, particularly after the article is accommodated and packaged in the packaging box and before it is opened.

[0014] <Configuration of a Packaging Box Including a Polymerization Lock> FIG. 1 is a perspective view of a packaging box 100 according to an embodiment of the present invention. FIG. 2 is a perspective view of a sleeve obtained by removing the adhesion of the flaps of the flap configuration surfaces 1F and 2F of the packaging box 100 shown in FIG. 1 and folding it. FIG. 3 is a plan view of a state where the weakened lines WL1 and WL2 are broken and the broken end surfaces 2413 and 2423 are inserted into the slots S211 and S212 in the folded sleeve shown in FIG. 2. FIG. 4 is a diagram for explaining the polymerization lock according to the present embodiment. FIG. 4(a) is a diagram before the broken end surface 2423 is inserted into the slot S212, and FIG. 4(b) is a diagram after the broken end surface 2423 is inserted into the slot S212.

[0015] The package according to the present embodiment is configured by accommodating an article in a packaging box 100. The article may be any article as long as the effects of the present invention are exhibited.

[0016] As shown in FIGS. 1-4, the polymerization lock of the packaging box 100 according to this embodiment is for closely fixing the opposing surfaces in a state where the packaging box 100 is folded into a flat shape. The packaging box 100 is formed of a pair of flap configuration surface portions 1F and 2F, a pair of long side surface portions 11 and 14, and a pair of short side surface portions 12 and 13 to present a rectangular parallelepiped. A first weak line WL1 is formed at one end of an edge L3 (edge L10 in the case of the long side surface portion 14) between one long side surface portion 11 (or long side surface portion 14) of the pair of long side surface portions 11 and 14 and a flap portion 211 (flap portion 241 in the case of the long side surface portion 14) extending from one side thereof. The weak line according to the present invention is, for example, a perforation that can be broken by hand. As shown in FIGS. 1-4, the polymerization lock is composed of weak lines WL1 and WL2, a tongue-shaped fracture end surface portion described later after cutting the weak lines WL1 and WL2, and a slot (existing between the outer flap portion and the inner flap portion) into which the fracture end surface portion can be inserted. That is, the locking function is exerted by sliding the fracture end surface portion so as to bite into the gap of the slot. Note that since the locking function is sometimes realized by the rigidity of the fracture end surface portion, it is preferable not to bend the fracture end surface portion. However, an aspect in which a bending line is provided on the fracture end surface portion is also acceptable in the present invention in order to facilitate insertion into the slot and shorten the locking time. In this embodiment, the lengths of the weak lines WL1 and WL2 are designed in consideration of the magnitude of the displacement between the overlapping flap portions when folded. Of course, they may also be designed in consideration of ease of insertion.

[0017] The close fixing of the opposing surfaces of the packaging box by the polymerization lock according to this embodiment is possible in a packaging box in a sleeve state as shown in FIG. 2. However, in the present invention, it is of course possible even in a packaging box in a double-folded state with the overlap 15 removed.

[0018] Furthermore, as shown in FIGS. 1-3, the polymerization lock of the packaging box 100 according to the present embodiment further includes a second weak line WL2 formed at one end of an edge L4 (edge L11 in the case of the long side surface portion 14) between one long side surface portion 11 (or long side surface portion 14) and a flap portion 212 extending from it to the other side (flap portion 242 in the case of the long side surface portion 14).

[0019] In the packaging box 100 according to the present embodiment, as shown in FIGS. 1-3, in order to make it easy to carry when storing an article, the handle portions 50 are respectively formed on the opposing outer flap portions 241 and 242 of the flap constituent surface portions 1F and 2F. As shown in FIGS. 1-3, the handle portion 50 is formed in a rounded rectangle, and among a pair of straight lines of the rounded rectangle, the straight line on the top surface portion (long side surface portion 14) side of the packaging box 100 is constituted by a bending line, and the other curves and straight lines are constituted by cut lines. Note that in the present invention, the shape and configuration of the handle portion 50 are not limited to this.

[0020] FIG. 5 is a plan view of a blank obtained by unfolding the packaging box according to the present embodiment.

[0021] In the present embodiment, as shown in FIG. 5, the blank 100B of the packaging box 100 has a rectangular first surface portion 11 having mutually parallel first bending lines L1 and second bending lines L2, and mutually parallel third bending lines L3 and fourth bending lines L4 orthogonal to the first bending line L1, a second surface portion 12 having mutually parallel fifth bending lines L5 and sixth bending lines L6 orthogonal to the first bending line L1 and connected to the first surface portion 11 via the first bending line L1, a seventh bending line L7 parallel to the second bending line L2, and mutually parallel eighth bending lines L8 and ninth bending lines L9 orthogonal to the second bending line L2.

[0022] In addition, in this embodiment, as shown in FIG. 5, the blank 100B of the packaging box 100 includes a rectangular third surface portion 13 connected to the first surface portion 11 via a second folding line L2, a tenth folding line L10 and an eleventh folding line L11 that are parallel to each other and orthogonal to the seventh folding line L7, and a fourth surface portion 14 connected to the third surface portion 13 via the seventh folding line L7. A pair of first inner flap portions 221 and 222 respectively connected to the second surface portion 12 via a fifth folding line L5 and a sixth folding line L6, and a pair of second inner flap portions 231 and 232 respectively connected to the third surface portion 13 via an eighth folding line L8 and a ninth folding line L9. A pair of first outer flap portions 211 and 212 respectively connected to the first surface portion 11 via a third folding line L3 and a fourth folding line L4, and a pair of second outer flap portions 241 and 242 respectively connected to the fourth surface portion 14 via the tenth folding line L10 and the eleventh folding line L11. In addition, the blank 100B includes a patch 15 connected to the second surface portion 12 via a twelfth folding line L12.

[0023] Furthermore, in this embodiment, as shown in FIG. 5, a first slot S211 is formed between the first outer flap portion 211 and the first inner flap portion 221. Similarly, a first slot S131, S341, and S421 are respectively formed between the first outer flap portion 211 and the second inner flap portion 231, between the second inner flap portion 231 and the second outer flap portion 241, and between the first inner flap portion 221 and the second outer flap portion 241. Also, in this embodiment, as shown in FIG. 5, a second slot S212 is formed between the first outer flap portion 212 and the first inner flap portion 222. Similarly, a second slot S132, S342, and S422 are respectively formed between the first outer flap portion 212 and the second inner flap portion 232, between the second inner flap portion 232 and the second outer flap portion 242, and between the first inner flap portion 222 and the second outer flap portion 242.

[0024] In addition, in the present embodiment, as shown in FIG. 5, in a direction parallel to the folding lines for each flap portion to bend, the width D1 of the first surface portion 11 and the fourth surface portion 14 is wider than the width D2 of the second surface portion 12 and the third surface portion 13. First weak lines WL1 are respectively formed at both ends of the third folding line L3 and the tenth folding line L10, and second weak lines WL2 are respectively formed at both ends of the fourth folding line L4 and the eleventh folding line L11.

[0025] In the present embodiment, as shown in FIG. 5, the first outer flap portion 211 is provided with first broken end surface portions 2112 and 2113 that can be inserted into the slot by breaking the first weak line WL1 and are in the shape of a tongue piece. Similarly, the first outer flap portion 212 is provided with second broken end surface portions 2122 and 2123 that can be inserted into the slot by breaking the second weak line WL2 and are in the shape of a tongue piece. Further, in the present embodiment, as shown in FIG. 5, the second outer flap portion 241 is provided with first broken end surface portions 2413 and 2412 that can be inserted into the slot by breaking the first weak line WL1 and are in the shape of a tongue piece. Similarly, the second outer flap portion 242 is provided with second broken end surface portions 2423 and 2422 that can be inserted into the slot by breaking the second weak line WL2 and are in the shape of a tongue piece.

[0026] In this embodiment, by folding at the second folding line L2 and the twelfth folding line L12, the first broken end surface portion 2112 of the first outer flap portion 211 can be inserted into the first slot S341, the second broken end surface portion 2122 of the first outer flap portion 212 can be inserted into the second slot S342, the first broken end surface portion 2413 of the second outer flap portion 241 can be inserted into the first slot S211, and the second broken end surface portion 2423 of the second outer flap portion 242 can be inserted into the second slot S212. Also, in this embodiment, by folding at the first folding line L1 and the seventh folding line L7, the first broken end surface portion 2113 of the first outer flap portion 211 can be inserted into the first slot S421, the second broken end surface portion 2123 of the first outer flap portion 212 can be inserted into the second slot S422, the first broken end surface portion 2412 of the second outer flap portion 241 can be inserted into the first slot S131, and the second broken end surface portion 2422 of the second outer flap portion 242 can be inserted into the second slot S132. Therefore, the user can select from the above combinations according to the situation.

[0027] <Disassembly procedure of the packaging box> The packaging box 100 shown in FIG. 1, for example, can be transformed into the state shown in FIG. 2 by the user removing the adhesions between the outer flap parts 211, 241 and the inner flap parts 221, 231 in the flap configuration surface part 1F, removing the adhesions between the outer flap parts 212, 242 and the inner flap parts 222, 232 in the flap configuration surface part 2F, and folding it into a folded sleeve shape at the second folding line L2 and the twelfth folding line L12. Then, as described above, by breaking the first weak line WL1 and the second weak line WL2 of the fourth surface part, and inserting the first broken end surface part 2413 and the second broken end surface part 2423 of the fourth surface part into the first slots S211 and the second slots S212 between the first outer flap parts 211, 212 and the first inner flap parts 221, 222 respectively (in the case of the second broken end surface part 2423 of the fourth surface part, by inserting it into the second slot S212 in the A direction in FIG. 4(a)), the opposing surface parts of the folded packaging box are closely fixed to each other, and the bulk is reduced (see FIG. 3).

[0028] Conventionally, packaging boxes have been widely used in the distribution process of goods. After unpacking, the packaging boxes are folded into a flat shape for reuse or disposal and then carried to a predetermined storage location. On the other hand, since packaging boxes are often made of cardboard, a repulsive force acts in the folded state, creating a space inside and causing bulkiness. This makes them difficult to carry and may unnecessarily narrow the storage space. This becomes more prominent as the number of packaging boxes increases.

[0029] Therefore, for example, a polymerization lock for a packaging box that is devised so that opposing surface parts are engaged when the packaging box is folded into a flat shape is disclosed in Patent Documents 1 and 2.

[0030] By the way, generally, a series of operations of unpacking the packaging box, folding it into a flat shape, and carrying it to a predetermined storage location requires speed. However, it cannot be said that this is sufficiently ensured by the polymerization locks described in Patent Documents 1 and 2, and there is still room for improvement in the configuration of the polymerization lock of the packaging box.

[0031] According to this embodiment, in the packaging box 100 folded into a flat shape, by breaking the weak lines WL1 and WL2 and inserting them into the slots, the opposing faces (the third face 13 and the fourth face 14 and the first face 11 and the second face 12 in FIGS. 1-3) can be easily and closely fixed with a small amount of movement. Therefore, the formation of a space inside due to the restoring force or the like is suppressed, and it becomes less bulky, so that the folded packaging box 100 can be easily carried and can be carried quickly.

[0032] Further, according to this embodiment, since the bulkiness is reduced as described above, the storage space can be saved with respect to the storage location.

[0033] Furthermore, according to this embodiment, when the cut weak line is short, sufficient strength for storing the article can be ensured, so that the packaging function can be maintained even if the packaging box is reused.

[0034] In addition, when the polymerization lock according to this embodiment is adopted for the packaging box, it has a simple structure that can be partially processed by a known box-making machine, so that the adoption cost can be suppressed. Also, it is possible to reduce the concern about strength deterioration and troubles due to adding the lock function.

[0035] <Others> The present invention is not limited to the above-described embodiments and the modified examples described herein, and appropriate changes and modifications can be made without departing from the technical idea of the present invention.

[0036] For example, the packaging box according to the above embodiment is exemplified as a so-called wraparound cardboard box, but the present invention is not limited to this, and the same configuration can be applied to other types of cardboard boxes.

[0037] Also, the materials of the packaging box and the blank according to the above embodiment are made of cardboard, but the present invention is not limited to this, and any material can be used as long as the effects of the present invention can be exhibited. For example, it may be made of thick paper or plastic.

[0038] In addition, the packaging box according to the above embodiment has a total of eight overlapping locks. However, in the present invention, an effect can be achieved as long as it has at least one overlapping lock.

Explanation of Signs

[0039] 100 Packaging box 1E First flap configuration surface 2E Second flap configuration surface 11 First surface (long side surface) 12 Second surface (short side surface) 13 Third surface (short side surface) 14 Fourth surface (long side surface) 15 Overlap 221, 222 First inner flap part 231, 232 Second inner flap part 211, 212 First outer flap part 241, 242 Second outer flap part 50 Handle part L1 First folding line L2 Second folding line L3 Third folding line L4 Fourth folding line L5 Fifth folding line L6 Sixth folding line L7 Seventh folding line L8 Eighth folding line L9 Ninth folding line L10 Tenth folding line L11 Eleventh folding line L12 Twelfth folding line S131, S211, S341, S421 First slot S132, S212, S342, S422 Second slot 2112, 2113, 2413, 2412 First broken end surface 2122, 2123, 2423, 2422 Second broken end surface WL1 First weak line WL2 Second weak line

Claims

1. A polymerization lock for a packaging box for fixing adjacent surfaces to be close to each other in a state where the packaging box is folded into a flat shape, wherein the packaging box has a rectangular parallelepiped shape with a pair of flap configuration surfaces, a pair of long side surfaces, and a pair of short side surfaces. The polymerization lock is a pair of first weak lines formed at one end of each of a pair of edges between the pair of long side surfaces and a pair of flap portions extending from one side thereof; a pair of tongue-shaped first broken end surfaces formed after cutting the pair of first weak lines; a slot between a flap portion extending from the other long side surface of the pair of long side surfaces and a flap portion extending from the other short side surface of the pair of short side surfaces, into which one of the pair of first broken end surfaces can be inserted; a slot between a flap portion extending from one long side surface of the pair of long side surfaces and a flap portion extending from one short side surface of the pair of short side surfaces, into which the other of the pair of first broken end surfaces can be inserted. The polymerization lock for a packaging box is characterized by comprising the above.

2. The polymerization lock is a second weak line formed at one end of an edge between the one long side surface and a flap portion extending from the other side thereof; a tongue-shaped second broken end surface formed after cutting the second weak line; a slot between a flap portion extending from the other long side surface of the pair of long side surfaces and a flap portion extending from the other short side surface of the pair of short side surfaces, into which the second broken end surface can be inserted. The polymerization lock for a packaging box according to claim 1 is further characterized by comprising the above.

3. A packaging box provided with the polymerization lock for a packaging box according to claim 1 or claim 2.

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