JP2020111373A - Packaging box - Google Patents

Abstract

To provide a packaging box that suppresses vertical and horizontal movements in a slit lock.SOLUTION: A packaging box A1 has: a square cylindrical trunk part 10 that consists of a front plate 12, a rear plate and a horizontal side plate 14; a bottom plate that closes a bottom surface of the trunk part; a lid plate 15 that closes an upper opening of the trunk part; a flap 16 that is provided at a tip part of the lid plate; and an insertion piece 40 that is provided on a tip edge of the flap. One slit where the insertion piece is inserted is formed in a horizontal direction, and an easily breakable line is provided downward from both ends thereof to form a locking piece 30, both ends of connection of the flap and the insertion piece are formed with a slit 41 inclined at 45 degrees, a slit 32a having the same shape and inclined by 45 degrees is also formed on the locking piece in correspondence with the slit. When the insertion piece is inserted into one of the slits, the slits at both ends and the slit of the locking piece are fitted by abutting cut surfaces inclined in a length direction of the slit, as a result, the fit exerts a resistance force on the trunk part and the lid plate from the vertical and horizontal directions.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging box with a tampering prevention function.

A tamper-proof packaging box for storing articles (commodities) such as medicines, cosmetics, and foods, as described in Patent Documents 1 and 2, and a rectangular tubular body including front and rear plates and left and right side plates. A bottom plate that closes the bottom of the body, a lid plate that closes the upper opening of the body, and a flap provided at the tip of the lid, and one slit (cut) is formed in the flap in the lateral direction. In the body part connected to the lid plate, the other slit in which the flap is inserted from the body part surface is formed in the lateral direction, and an easily breakable line is formed downward from both ends of the other slit. When the other slit is provided and the locking piece surrounded by the easy break line is formed in the body, and the flap is inserted into the other slit from the surface of the body, the flap and the locking piece are The cut surfaces in the length direction abut against each other (engage) and the slit lock is performed by the fit to close the lid plate (lid lock) (Patent Document 1, paragraphs 0011 to 0021, FIG. 1). (See FIG. 3 and the like), and the slit lock has a slanting cut (see paragraphs 0011 to 00331 of Patent Document 2 and FIGS. 1 to 10).

In this packaging box, in order to open the lid plate, the locking piece must be separated from the rear plate through the easy breaking line to open the slit lock. Since the separated locking piece cannot be repaired, it can be easily determined that the lid is opened. Therefore, it can be said that it is a tamper-proof packaging box.

JP, 2010-285186, A JP, 2011-51606, A

However, in this conventional lid lock (slit lock) structure, both slits are straight in a lateral direction (horizontal direction) (see Patent Document 1 FIG. 4 to FIG. 6), and the lid plate is vertically moved. It exerts a resistance against it, but it cannot exert an effective resistance against lateral movement.

An object of the present invention is to enable the slit lock to exert a resistance not only to the vertical movement of the lid plate but also to the horizontal movement thereof.

In order to achieve the above object, the present invention is configured such that the abutting line of fitting of the slit lock is L-shaped or inclined to the left or right with respect to the vertical direction.
If the abutment line is L-shaped, the vertical portion (vertical portion) of the L-shaped portion can resist horizontal movement, and the horizontal portion (horizontal portion) can resist vertical movement. Further, if the abutting line is inclined to the left or right with respect to the vertical direction, the slit lock of the inclined abutting line can resist the movement in both the vertical direction and the horizontal direction.

Specifically, the lid lock structure for a packaging box according to the present invention includes a rectangular tubular body including front and rear plates and left and right side plates, a bottom plate closing the bottom of the body, and an upper opening of the body. A lid plate, a flap provided at the tip of the lid plate, and an insert piece provided at the tip edge of the flap, and the insert piece is provided on one of the front and rear plates of the body along which the flap is placed. Forming one slit to be inserted from the surface in the left-right direction, forming an easily breakable line from both ends of the one slit downward to form a locking piece surrounded by one slit and the easily breakable line, The both ends of the connection between the flap and the insertion piece are formed with the other L-shaped slit, or with the other slit inclined leftward or rightward with respect to the vertical direction, and at the Both ends are also formed in an L shape or inclined corresponding to the other slit, and when the insertion piece is inserted into the one slit from the body surface, the other slit at both ends of the insertion piece and one of the locking pieces The both ends of the slit are fitted with the cut surfaces in the lengthwise direction of both slits abutting against each other (slit locked), and at the L-shaped or inclined both ends of the slits, The fitting is adapted to exert a resisting force against the force applied to the cover plate from both upper, lower, left and right directions.

With this configuration, it is possible to form perforations from both ends of one slit toward the tip end side of the cover plate. In this way, if the front plate is pushed in and the slit lock is released to open the lid plate, the flap is easily separated from the lid plate through the perforations by the pushing or the like. It can be seen that the lid plate has been opened.
In addition, the locking piece has a shape in which the easy break line that defines the outer periphery of the lock piece is directed downward from one end of the other slit, and if the shape is continuous to the other end, the easy break line is formed when the lid plate is opened. The locking piece can be separated from the body via the. The detachment of the locking piece is likely to occur when falsifying.
From the above, it can be said that the easily breakable lines which are continuous at the perforations and at both ends of the other slit exert a tampering prevention function.

Since the present invention is configured as described above, the slit-locked lid becomes stable.

Perspective view from the front of one embodiment of the packaging box according to the present invention The perspective view from the back of the same embodiment. Development view of the same embodiment The perspective view before closing the lid of the same embodiment The lid closing action of the embodiment is shown, (a) is a partial front view, (b) is an XX line enlarged sectional view of (a). The same lid closing action is shown, (a) is a partial front view, (b) is an XX line expanded sectional view of (a). The same lid closing action is shown, (a) is a partial front view, (b) is an XX line expanded sectional view of (a). The perspective view of the lid open state of the embodiment The operation|movement after opening the lid of the same embodiment is shown, (a) is a partial perspective view of the state which lifted up the flap with the slit lock of the insertion piece removed, (b) is a partial sectional view of (a), (c) is a partial perspective view with the lid resealed, (d) is a partial sectional view of (c) The perspective view of other embodiment of the packaging box which concerns on this invention. Development view of the same embodiment The lid opening operation explanatory perspective view of the same embodiment The perspective view of further another embodiment of the packaging box which concerns on this invention. Development view of the same embodiment The perspective view of further another embodiment of the packaging box which concerns on this invention. Development view of the same embodiment Perspective view of the same embodiment with the lid open The lid closing action of the same embodiment is shown, (a) is a partial front view, (b) is a XX line sectional view of (a). The lid closing action is shown, (a) is a partial front view, (b) is a sectional view taken along line XX of (a).

1 to 16B show a packaging box with a tampering prevention function according to the present invention. The packaging box A (A1, A2, A3, A4) of each of the embodiments is a paperboard, a plastic sheet, or a paper sheet. It is manufactured from the expanded material (blank) shown in FIGS. 3, 9, 12, and 14 punched from a composite sheet of plastic and the like. In this specification, in a state where the packaging box A is placed on a horizontal plane, one orthogonal to the horizontal plane is referred to as front and rear, the other is referred to as left and right, and an upper side along a vertical direction orthogonal to the horizontal plane is up and down. Is called below. Further, the left, right, upper edge, and lower edge of each part in the unfolded state of the blank refer to each part in the state of the packaging box A shown in FIGS. 1, 2, 7, 10, and 13 in which the blank is assembled. Left, right, upper edge, and lower edge are referred to as left, right, upper edge, and lower edge. Further, in FIGS. 3, 9, 12, and 14, a thick solid line c is a cut line, a thin solid line r is a fold line, and a broken line r'is a perforation line.

As shown in FIGS. 1 to 3, in a packaging box A1 according to one embodiment, a rectangular tubular body 10 is composed of a bottom plate 11, front and rear plates 12 and 13, and left and right side plates 14 and 14. A cover plate 15 is continuously provided on the upper edge of the rear plate 13, and a flap 16 is provided at the tip of the cover plate 15. Further, a flap 14a is provided on the upper edge of the side plate 14.
Flap pieces 17 and 17 are connected to one side edge of the side plates 14 and 14, respectively. The flap pieces 17 and 17 are folded inward along a fold line r and are fitted to the front plate 12. Further, the reinforcing plate 18 and the sticking piece 19 are connected to the front edge of the front plate 12, the reinforcing plate 18 is bent inward through the fold line r, and the sticking piece 19 is valley-folded through the perforation r′. Then, it is attached to the bottom plate 11.
Middle rear pieces 20, 20 are connected to the other side edges of the side plates 14, 14, respectively, and these middle rear pieces 20 are folded inward along a fold line r and the key-like portion 21 at the tip thereof is bitten. Positioned along the inside of the back plate 13 by mating.

The above configuration is similar to that of a conventionally known packaging box, and the feature of the present invention is that the engagement piece 30 provided on the front plate 12 and the insertion piece 40 provided at the center of the front end of the flap 16 are fitted together. The structure.
The locking piece 30 has two key-shaped cuts (slits) 31 formed on both sides from the connecting line (crease line r) between the bottom plate 11 and the front plate 12 toward the tip (upper edge) of the front plate 12. The left and right ends (horizontal direction) of arcuate cuts (slits) 32 are formed. The key-shaped cut 31 is composed of a straight line portion 31a and an inclined portion 31b that is inclined inward by 45 degrees. Both ends of the slit 32 are inclined portions 32a inclined 45 degrees upward (in FIG. 3). Further, a vertical slit 32b is formed at the center of the slit 32, so that the finger can be easily hooked when a finger, which will be described later, is hooked and the engaging piece 30 is cut and raised.
A breakable line is formed by the slits 31 and 32, and the fold line r between the bottom plate 11 and the front plate 12 and the front plate portion surrounded by the breakable line serve as the locking piece 30. The number of slits 31 of the easily breakable line is not limited to two and may be any number such as three and four.

The insertion piece 40 has a tongue shape, and slits (cuts) 41 are formed at the roots on both sides of the insertion piece 40 and are inclined inward downward by 45 degrees (=θ) (in FIG. 3). The inclination direction and the length of the slit 41 are the same as the inclination degree (45 degrees) and the length of the inclination portion 32a of the slit 32 of the locking piece 30. It is designed to fit (engage) with each other. An arcuate slit 42 is formed in the center of the insertion piece 40, and a fingertip is hooked on this slit 42 to open (open) the lid plate 15.
The slit 41 is formed at a position slightly inside the side edge of the insertion piece 40 (for example, about 1 mm) from the connection point between the tip edge of the flap 16 and the side edge of the insertion piece 40, and the slit 41 has a small gap (for example, about 1 mm). , 0.5 mm width), it is easy to fit the locking piece 30 into the slit (inclined portion) 32a and the engagement is ensured.

The packaging box A1 of this embodiment is configured as described above, and in the unfolded blank shown in FIG. 3, both side plates 14 and 14 are raised with respect to the bottom plate 11 via the fold line r, and the flaps before and after the stand plate are also formed. The pieces 17, 17 and the middle rear pieces 20, 20 are bent inward, the flap piece 17 is aligned with the front plate 12, and the middle rear piece 20 meshes with its front end portion. Then, the front plate 12, the reinforcing plate 18, and the sticking piece 19 are bent along the crease line r and the perforation line r′, and the sticking piece 19 is glued to the inner surface of the bottom plate 11 to form a rectangular tubular shape shown in FIG. The bottom body 10 is configured.

In this state, products (articles) such as confectionery are stored in the body 10, and the flap 14a of the side plate 14 is bent inward before and after the storage.
After this storage, as shown in FIGS. 1 and 2, the lid plate 15 is covered so as to cover the opening of the body portion 10, and the insertion piece 40 of the flap 16 is inserted into the slit 32 of the locking piece 30 of the front plate 12. When the insertion is performed, the slits 41 on both sides of the insertion piece 40 are slit-locked so as to correspond to the inclined portions 32a on both ends of the slit 32 of the locking piece 30.

That is, as shown in FIGS. 5A→5B→5C, when the insertion piece 40 is inserted into the slit 32 of the locking piece 30 of the front plate 12, the slits 41 on both sides of the insertion piece 40 and the slit 32 of the locking piece 30 are inserted. Since both end inclined portions 32a have the same length and have an inclination of 45 degrees in the same direction, they are fitted (engaged) with each other at an inclination of 45 degrees and slit locked (FIG. 5C(b)). reference).

As shown in FIG. 5C(a), this 45-degree slit lock state has its abutting surface against the vertical and horizontal movements of the lid plate 15 (flap 16) with respect to the body portion 10 (front plate 12). Therefore, the lid plate 15 does not move. Further, the slit lock has a strong fitting degree by pressing the insertion piece 40 by the locking piece 30 (see the white arrow in FIG. 5C(b)), so if the cover plate 15 is opened, It cannot be opened unless the locking piece 30 is cut and raised through the slits 31 on both sides thereof and the slit lock is released. For this reason, when the cover plate 15 is opened, any of the cuts (slits) 31 of the locking piece 30 is deformed, and a tampering trace remains. That is, the packaging box A1 has a tampering prevention function.

By the way, if the front plate 12 on the outside of the locking piece 30 is pushed and the insertion piece 40 is slid upward, there is a possibility that the slit lock of the both end inclined portions 32a of the slit 32 and the slit 41 will be released and the lid plate 15 will be opened. In this embodiment, since the reinforcing plate 18 is fixed to the bottom plate 11 via the sticking piece 19 to increase the rigidity of the front plate 12, the risk thereof is extremely small.

As shown in FIG. 6, the lid plate 15 is opened by releasing the slit lock by locking the locking piece 30 from the slit 32, picking up the tip of the locking finger 30 with a finger and cutting and raising it through the slit 31. By this release, the insertion piece 40 is opened and the lid plate 15 can be opened.
In this opened state, as shown in FIGS. 7A and 7B, the locking piece 30 is raised and fitted into the front plate 12 through the slits 31 and 32, and the insertion piece 40 is raised horizontally. Then, the arc-shaped projecting piece 40a formed by the slit 42 is in a protruding state from the slit 42. In accordance with this action, as shown in (c) and (d) of the same figure, when the insertion piece 40 is laid down on the front plate 12 side so that the protrusion 40a enters the slit 32 of the front plate 12, the protrusion piece 40a 40a enters into the back surface of the front plate 12 through the slit 32 and engages with the front plate 12 to maintain the lid plate 15 in the reclosed state.

8 to 10 show another embodiment of the tamper-proof packaging box according to the present invention, and a packaging box A2 of this embodiment is shown in FIG. 9 of the same material as the packaging box A1 of the above-mentioned embodiment. It is made from the developed material.

In this packaging box A2, the same reference numerals as in the packaging box A1 indicate the same things, and the sizes of the front and rear plates 12 and 13 and the side plate 14 forming the body portion 10 are made different, and the bottom plate 11 has a so-called hell bottom structure. It was done. In the bottom plate 11, bottom plate pieces 11a and 11b are connected to the lower edges of the front and rear plates 12 and 13, and the locking pieces 11a' and 11b' of the pair of bottom plate pieces 11a and 11b are engaged with each other as in the conventional case. , The side plate 14 is attached to the lower flap 14b. The front and rear plates 12, 13 and the side plate 14 of the body portion 10 are folded in a square shape, and the sticking piece 19 ′ of the rear plate 13 is attached to the back surface of the side plate 14 to maintain the square tubular shape.

A flap 12a is provided on the upper edge of the front plate 12. By bending the flap 12a inward of the body portion 10, the bending strength of the front plate 12 in the left-right direction is improved. Therefore, when the insertion piece 40 is inserted into the slit 32 and the slits 32a and 41 are used for slit locking, the front plate 12 is difficult to bend, and the strength of the slit locking is improved.
Further, perforations 43 extending from the inner ends of the slits 41 on both sides of the insertion piece 40 toward the cover plate 15 are formed, and when the insertion piece 40 is pulled out from the slit 32 of the locking piece 30, the perforations 43 are easily torn. Therefore, it is possible to more reliably confirm that the information has been tampered with. This perforation 43 can also be formed in the packaging box A1 of the above embodiment (see FIG. 3).

11 and 12 show a packaging box with a tampering prevention function according to the present invention, wherein the packaging box A3 of this embodiment is the packaging box A2 of the above-described embodiment with the locking piece 30 separated. Similarly, the insertion of the insertion piece 40 into the slit 32 results in slit locking by the slit 41 and the end 32a of the slit 32.
In the packaging box A3 of this embodiment, since the locking piece 30 can be separated from the front plate 12 (body 10) when the lid plate 15 is opened, it can be clearly confirmed that the packaging box A3 has been opened.

13 to 16B show another embodiment of the tamper-proof packaging box according to the present invention. The packaging box A4 of this embodiment is different from the above-mentioned embodiments, and the difference is that the structure of the slit lock is different. Is different from the size and shape of the body part. The size and shape of the body part 10 are different from those of the front and rear plates 12, 13, the bottom plate 11, the side plate 14 and the like. The operation is the same as that of each embodiment.

In the slit lock of this embodiment, in the locking piece 30 having the same shape as the locking piece 30 provided on the front plate 12, both ends of the slit 32 of the locking piece 30 are cut vertically from the horizontal. It is an L-shaped slit 35 including a vertical portion 35a and a horizontal portion 35b horizontally cut from the lower end thereof.
The insertion piece 40 has slits 45 formed on the left and right in the middle of the protruding direction thereof. The slit 45 includes a horizontal portion 45b facing inward from a side edge and a vertical portion 45a facing downward from the tip of the horizontal portion 45b. It has an L-shape. The L-shaped slit 45 and the L-shaped slit 35 of the locking piece 30 have the same shape.

The packaging box A4 of this embodiment is configured as described above, and in the unfolded blank shown in FIG. 14, both side plates 14 and 14 are raised with respect to the bottom plate 11 via the fold line r, and the flaps before and after that are also formed. 14a, 14a are bent inward, and the sticking piece 19' is stuck along the side plate 14 to form the body 10. Similar to the packaging box A3, the bottom plate 11 is configured by engaging the locking pieces 11a', 11b' of the pair of bottom plate pieces 11a, 11b and adhering them to the lower flap 14b of the side plate 14.

In the state shown in FIG. 15 before the lid plate 15 is closed, products such as confectionery are stored in the body 10, and the flaps 14a of the side plates 14 are bent inward before and after the storage.
After this storage, as shown in FIG. 13, the cover plate 15 is covered so as to cover the opening of the body portion 10, and as shown in FIGS. 16A to 16B, the insertion piece 40 of the flap 16 is inserted into the locking piece of the front plate 12. Insert into the slit 32 of 30. When the insertion is performed, the slits 45 on both sides of the insertion piece 40 are slit-locked corresponding to the L-shaped slits 35 on both ends of the locking piece 30.
That is, since the slits 45 on both sides of the insertion piece 40 and the L-shaped slits 35 on both ends of the locking piece 30 both have the same L-shape, the slits are fitted with each other with the L-shape. Locked (see Figure 16B).

In this L-shaped slit lock state, the abutting surface resists the vertical and horizontal movements of the lid plate 15 (flap 16) with respect to the body portion 10, so that the lid plate 15 does not move ( FIG. 16B(a)). Further, since the fitting degree of the slit lock is strengthened by pressing the insertion piece 40 by the locking piece 30 (see FIG. 16B (b)), if the lid plate 15 is opened, the locking piece 30 will be released. It cannot be opened unless the slit lock is removed by cutting and raising through the slits 35 on both sides thereof. For this reason, when the cover plate 15 is opened, any of the cuts (slits) 35 of the locking piece 30 is deformed, and a tampering trace remains. That is, this packaging box A4 also has a tampering prevention function.

As shown by the chain line in FIG. 15, the cover plate 15 is opened by releasing the slit lock by locking the locking piece 30 from the slit 32, pinching the tip of the locking finger 30 with a finger, and cutting and raising the locking piece 30 through the slit 31. The tip of the locking piece 30 is easily pointed out by forming a notch 36 in the upper edge of the front plate 12.
Also in this embodiment, like the packaging box A3, if the perforations 43 extending from the inner ends of the slits 45 (vertical portions 45a) on both sides of the insertion piece 40 toward the cover plate 15 are formed, the insertion piece 40 is locked. Since the perforation 43 is likely to be torn when it is pulled out from the slit 32 of 30, the tampering can be more surely confirmed.

Incidentally, it goes without saying that in the packaging box A of each embodiment, an appropriate partition is loaded inside the packaging box A to eliminate the looseness of the articles to be stored by the partition.

The inclination degree θ of the inclined slits 32a and 41 forming the slit lock is not limited to 45 degrees on the inner side, and may be arbitrary as long as the slit lock prevents the lid plate 15 from being opened. Therefore, based on the size and shape of the packaging box A, it is appropriately determined through experiments or the like. Incidentally, in the embodiment of the packaging box A2, the most preferable inclination angle θ is 45 degrees, and if it is in the range of 45 degrees to 40 degrees (45 degrees≧θ≧40 degrees), it is almost equal to 45 degrees. It was used in the range of 30 degrees (40 degrees ≧θ≧30 degrees) and 45 degrees to 50 degrees (45 degrees ≦θ≦50 degrees).
Further, even if the horizontal portions 35b and 45b and the vertical portions 35a and 45a of the L-shaped slits 35 and 45 forming the slit lock are not orthogonal to each other, if the movement of the lid plate 15 in the vertical and horizontal directions can be prevented, It is optional such as 80-degree intersection and 45-degree intersection.
In each of the above embodiments, the front plate 12 is considered to be the rear plate and the rear plate 13 is considered to be the front plate.
As described above, it should be considered that the embodiments disclosed this time are exemplifications in all points and not restrictive. The scope of the present invention is shown by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

10 Packaging box body 11 Bottom plate 12 Front plate 13 Rear plate 14 Side plate 15 Side plate 15 Lid plate 16 Flap 17 Flap piece 18 Reinforcing plate 19, 19' Adhering piece 20 Middle rear piece 30 Engaging piece 31 Slit 31a Straight part 31b of the slit Part 32 Inserting piece insertion slit 35 L-shaped slit 35a of locking piece Vertical part 35b of the same L-shaped slit 40 Horizontal part 40 Inserting piece 41 Inclined slit 45 of inserting piece L-shaped slit 45a of inserting piece Same L-shape Vertical part 45b of the slit-like slit Horizontal part A1, A2, A3, A4 Packaging box

Claims (2)

A rectangular tubular body (10) including front and rear plates (12, 13) and left and right side plates (14, 14), a bottom plate (11) closing the bottom surface of the body (10), and the same body (10). A lid plate (15) for closing an upper surface opening of the lid plate, a flap (16) provided at a tip portion of the lid plate (15), and an insertion piece (40) provided at a tip edge of the flap (16). , One of the front and rear plates (12, 13) of the body portion (10) along which the flap (16) is provided has one slit (32) in the left and right direction into which the insertion piece is inserted from the surface of the body portion (10). In addition, the easy-break line (31) is provided downward from both ends of the one slit (32) and the locking piece (30) surrounded by the one slit (32) and the easy-break line (31). To form
The flap (16) and the insertion piece (40) are connected to each other at both ends by forming the other L-shaped slit (45) or the other slit (41) inclined left or right with respect to the vertical direction. Both ends (32a, 32a, 35, 35) of the slit (32) of the body portion (10) are formed in the same L shape corresponding to the other slit (45, 41). Or it is formed to be inclined,
When the insertion piece (40) is inserted from the surface of the body (10) into the one slit (32), the other slit (45, 41) at both ends of the insertion piece (40) and one of the locking pieces (30). The slits (32) of both ends (32a, 32a, 35, 35) are abutted with each other by the cut surfaces in the lengthwise direction of the slits, and the slits (32) are L-shaped or inclined. A packaging box in which the fitting exerts a resistance against the forces applied to the body (10) and the cover plate (15) from both the upper, lower, left and right directions at both ends. The perforation (43) is formed from both ends (32a, 32a, 35, 35) of the one slit (32) toward the tip end side of the lid plate (15). Packaging box.

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