JP5497383B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box used for packaging cosmetics and the like.

Conventionally, in a packaging box having a front plate, a side plate, a back plate, a lid, a side flap formed at the end of the side plate, and an insertion flap formed at the end of the lid, the insertion flap and the side flap It is known to provide a lock function to the box by engaging the.
For example, in patent documents 1-6, the notch part is provided in the folding line vicinity with the cover part of an insertion flap, and the lock function which engages this notch part and a side flap is provided to the box.
However, these boxes have too strong lock strength, and the flap portion may be damaged when the lid is opened. In particular, many cosmetic boxes have high design properties, and it is desired to prevent the boxes from being damaged when the lid is opened in order to maintain the design properties.
On the other hand, Patent Document 7 proposes to provide a lock mechanism that reduces the lock strength by providing a convex portion or a concave portion in the vicinity of the folding line with the lid portion of the insertion flap. However, when assembling such a box, if the insertion flap part is folded by an automatic assembly machine (or manpower), it is not bent at the folding line between the lid part and the insertion flap, and the convex part or the concave part in the insertion flap. It was difficult to bend the box accurately and reliably.

Japanese Utility Model Publication No. 63-21212 Japanese Utility Model Publication No. 63-134909 Japanese Utility Model Publication No. 6-25121 JP 2000-326955 A JP 2001-199435 A JP 2003-291944 A Japanese Utility Model Publication No. 6-42632

  It is an object of the present invention to provide a packaging box that has an appropriate locking function that is easy to open, and that can accurately and reliably form a box.

The inventor of the present invention paid attention to the arrangement of the pressing portion provided on the insertion flap and achieved the above problem.
That is, the present invention is a packaging box having a front plate, a side plate, a back plate, a lid, a side flap formed at the end of the side plate and an insertion flap formed at the end of the lid, The side flap has a locking portion, the insertion flap has a pressing portion, and the pressing portion is disposed at a position that can be engaged with the locking portion, on the insertion flap surface side. A packaging box comprising a concave portion and a convex portion on the back side of the insertion flap, and arranged so as not to be parallel to a folding line between the lid portion and the insertion flap.

  According to the present invention, it is possible to provide a packaging box that has an appropriate locking function that is easy to open, and that can accurately and reliably form a box.

It is a schematic perspective view which shows one embodiment of the packaging box of this invention, FIG.1 (b) is A-A 'sectional drawing of the cover part of Fig.1 (a). It is a schematic perspective view which shows the other embodiment of the packaging box of this invention. It is a schematic perspective view which shows the other embodiment of the packaging box of this invention. It is a schematic plan view which shows the aspect of the side flap in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part in the packaging box of this invention. It is a schematic perspective view which shows the packaging box of a comparative example.

The packaging box of the present invention is a packaging box having a front plate, a side plate, a back plate, a lid, a side flap formed at the end of the side plate, and an insertion flap formed at the end of the lid. The side flap has a locking portion, the insertion flap has a pressing portion, and the pressing portion is disposed at a position engageable with the locking portion, and the insertion flap surface side And a convex portion on the back side of the insertion flap, and is arranged so as not to be parallel to the folding line between the lid portion and the insertion flap.
Here, “not parallel to the fold line” means “in the case of a straight line, the acute angle of the angle at which the straight line intersects the fold line is in the range of 5 to 90 °” In this case, the acute angle side of the angle intersecting with the folding line has a tangent line that varies within a range of 5 to 90 °.
From the viewpoint of preventing the pressing portion in the insertion flap from being bent by mistake in the step of bending the insertion flap portion by an automatic assembly machine (or manually), the pressing portion is 10 to 90 ° with the folding line. It is preferable that the curve is a straight line that forms an angle and / or a tangent that varies within an angle range of 10 to 90 ° with respect to the folding line.

Embodiments of the packaging box of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing an embodiment of the packaging box of the present invention.
A packaging box 10 according to the first embodiment of the present invention shown in FIG. 1A includes a front plate 11, a side plate 12, a back plate 13, a lid portion 14, and side flaps formed on end portions of the side plate 12. 16 and a packaging box having an insertion flap 15 formed at the end portion of the lid portion 14, having a locking portion 16 a at a side end portion of the side flap 16, and having a pressing portion 20 at the insertion flap 15, The pressing part 20 is arranged so as not to be parallel to the folding line 30 between the lid part 14 and the insertion flap 15, and this arrangement increases the rigidity in the direction perpendicular to the folding line 30 of the insertion flap 15. Since it becomes difficult to bend in the parallel direction, it may be bent erroneously by the pressing portion 20 in the insertion flap 15 in the process of bending the insertion flap portion by an automatic assembly machine (or manually). Without, and thus be accurately and reliably folded molded at fold line 30 between the lid portion 14 and the insertion flap 15. In FIG. 1A, the pressing portion 20 is disposed perpendicular to the folding line 30.
In FIG. 1A, the two pressing portions 20 each have two straight lines, but may be one or may be three or more.

  Moreover, the press part 20 is arrange | positioned at two places corresponding to the latching | locking part 16a of the side flap 16 of two right and left, and is each arrange | positioned in the site | part which can be engaged with the latching | locking part 16a. Here, the locking portion 16a refers to the side edge portion on the front plate side of the side flap 16 from the side flap 16 end portion on the side plate 12 side to the separation portion 16b, and the separation portion 16b refers to the side flap. The side edge part of 16 refers to the side edge part on the side of the front plate of the side flap 16 that is separated from the front plate 11 by more than the total amount of the thickness of the insertion flap 15 and the thickness of the convex part of the pressing part. The portion that can be engaged refers to the portion of the insertion flap 15 that corresponds to the locking portion 16a of the side flap 16 (that is, the portion of the insertion flap 15 that faces the locking portion 16a when engaged). From the viewpoint of the pressing portion 20 engaging with the locking portion 16a, the pressing portion 20 is preferably separated from the folding line 30 by the thickness of the side flap 16 or more.

FIG.1 (b) is AA 'sectional drawing of the cover part of Fig.1 (a). As shown in FIG. 1B, the pressing portion 20 includes a concave portion on the front surface side of the insertion flap 15 and a convex portion on the back surface side of the insertion flap 15. By pressing with an appropriate shape from the surface side of the insertion flap 15, the concave portion and the convex portion are simultaneously formed integrally. Since the locking portion 16a is on the back surface side of the insertion flap 15, it is important that a convex portion for engaging with the locking portion 16a exists on the back surface side of the insertion flap 15.
Moreover, the recessed part formed in the surface side of the insertion flap 15 has an effect which improves the designability when the packaging box 10 is opened.

FIG. 2 is a schematic perspective view showing another embodiment of the packaging box 10 of the present invention. In FIG. 2, the two pressing portions 20 each have three straight lines each perpendicular to the folding line 30, so that the rigidity in the direction perpendicular to the folding line 30 of the insertion flap 15 is further increased, and the folding line 30. It is difficult to bend in the direction parallel to the.
As shown in FIG. 2, in the packaging box 10 of the present invention, if the opening / closing flap 40 is provided at the end of the lid 14 (the end on the insertion flap 16 side), it is easier to lift the opening / closing flap 40 with a finger. Since the lid can be opened and the opening is simple with one operation, the convenience of the simple locking mechanism of the present invention is further enhanced.
The opening / closing flap 40 can be easily manufactured simply by cutting the insertion flap 15 as shown in FIG.

  FIG. 3 is a schematic perspective view showing another embodiment of the packaging box 10 of the present invention. In FIG. 3, there is one pressing portion 20, and both V-shaped end portions constituting the pressing portion 20 correspond to the two locking portions 16 a on the side flaps 16 (that is, the engaging portions are engaged during engagement). The both ends are preferably engaged with both of the locking portions 16a. Thus, when the width | variety of the front board 11 is narrow and the horizontal cross section of the packaging box 10 is near square, it is not necessary to provide the press part 20 according to the two latching | locking parts 16a, and one continuous one It may have a shape. In FIG. 3, the pressing portion 20 is formed in a V shape, but may be other characters or figures. In any case, when the packaging box 10 is opened, characters or figures pop up, so that an unexpected design effect is produced.

FIG. 4 is a schematic plan view showing an aspect of a side flap in the packaging box of the present invention. In Fig.4 (a), the latching | locking part 16a is extended from the boundary part of the front plate 11 and the side plate 12 at the acute angle of about 1-5 degrees with the front plate 11. The latching portion 16a is further separated from the front plate 11 in the middle to form a separation portion 16b.
In FIG. 4B, the locking portion 16a is formed from the boundary portion between the front plate 11 and the side plate 12 to the separation portion 16b while maintaining a certain distance from the front plate 11 (about the thickness of the side flap 16). Has been.
In either case, it is only necessary that the front plate 11 and the locking portion 16a are separated to such an extent that the insertion flap 15 can be easily inserted into the packaging box 10 and can be engaged with the convex portion of the pressing portion 20. .
Moreover, the back plate 13 and the side edge part by the side of the back plate of the side flap 16 may be gradually spaced apart at an acute angle of about 1 to 10 ° as necessary.

FIGS. 5-12 is a schematic expanded view of the cover part and insertion flap which show the other embodiment of the press part 20 in the packaging box 10 of this invention. 5 to 9 are cases where the pressing portion 20 is a straight line that forms an angle of 10 to 90 ° with the fold line 30 and / or a tangent line that varies within an angle range of 10 to 90 ° with respect to the fold line 30. Indicates.
The pressing portion 20 shown in FIG. 5 is a straight line extending from the side end portion of the insertion flap 15 and forms an angle of about 30 ° with the folding line 30.
The pressing portion 20 shown in FIG. 6 is a curved line extending from the side end portion of the insertion flap 15, and has a tangent that forms an angle of about 20 ° with the folding line 30 at the start point of the side end portion of the insertion flap 15. The end point inside the flap 15 has a tangent line that makes an angle of about 70 ° with the folding line 30. That is, the pressing portion 20 is a curve having a tangent line that varies within an angle range of 20 to 70 ° with respect to the folding line 30.

The pressing portion 20 shown in FIG. 7 is a straight line extending slightly from the inner side of the side end portion of the insertion flap 15 and forms an angle of about 25 ° with the folding line 30.
The pressing portion 20 shown in FIG. 8 is a curve extending slightly from the inner side of the side end portion of the insertion flap 15, and has a tangent that forms an angle of about 70 ° with the folding line 30 at the start point near the side end portion of the insertion flap 15. And has a tangent line that forms an angle of about 20 ° with the folding line 30 at the end point inside the insertion flap 15. That is, the pressing portion 20 is a curve having a tangent line that varies within an angle range of 20 to 70 ° with respect to the folding line 30.
The pressing portion 20 shown in FIG. 9 is arranged slightly inside the side end portion of the insertion flap 15 and consists of five straight lines perpendicular to the folding line 30.

The pressing part 20 according to the present invention may have at least one selected from an oval, a rectangle, a rounded rectangle (a rectangle with rounded corners), and a circle. More specifically, the pressing portion 20 has at least one oval whose center line is not parallel to the folding line 30, at least one rectangle whose center line is not parallel to the folding line 30, and whose center line is not parallel to the folding line 30. If the straight line connecting at least one rounded rectangle and two or more circles and connecting the centers of the circles has at least one selected from those not parallel to the folding line 30, it is prevented from being bent by the pressing portion 20. It is preferable from the viewpoint. In order to improve the locking function, it is preferable that there are a plurality of at least one selected from an oval, a rectangle, a rounded rectangle and a circle. The plurality of combinations may be combinations of different figures such as an oval and a circular combination.
When the pressing part 20 according to the present invention is at least two kinds selected from an oval, a rectangle, a rounded rectangle and a circle, a line segment connecting the centers thereof forms an angle of 5 to 90 ° with the folding line 30. It is preferable to extend.
The pressing portion 20 shown in FIG. 10 is disposed slightly inside the side end portion of the insertion flap 15, and the two left and right pressing portions 20 each have a single rounded rectangle. The angle between the center line of the rounded rectangle and the folding line 30 is about 25 °.
The pressing portion 20 shown in FIG. 11 is disposed slightly inside the side end portion of the insertion flap 15, and the two pressing portions 20 each have two circular shapes. The angle between the straight line connecting the two circles and the folding line 30 is about 30 °.

Further, the pressing portion 20 according to the present invention may be a polygonal line and / or a wavy curve. If it is a polygonal line and / or a wavy curve, at least most of the polygonal line and / or the wavy curve is not parallel to the folding line 30, which is preferable. From the viewpoint of preventing bending by the pressing portion 20 in the insertion flap 15 in the step of bending the insertion flap portion by an automatic assembly machine (or manual operation), it is preferable to increase the amplitude of the wave of the broken line or the wavy curve. Is preferably at least 3 times the line width, and more preferably at least 5 times the line width. The upper limit of the amplitude is not particularly limited, but it is preferable that the pressing portion is easily produced if it is 10 times or less the line width.
The pressing part 20 shown in FIG. 12 is formed in a polygonal line shape, and has an amplitude of about 3.5 times the line width. Further, it is a fold line extending from the side end portion of the insertion flap 15, and the angle between the fold line center line and the fold line 30 is about 20 ° and is not parallel to the fold line 30, so that it is bent by the pressing portion 20. It is further preferable from the viewpoint of preventing the occurrence.

Since the starting point of the pressing portion 20 according to the present invention shown in FIGS. 5 to 12 described above is separated from the folding line 30 by about the thickness of the side flap 16 or more, the locking mechanism functions reliably. preferable.
When the pressing portion 20 starts from the side end portion of the insertion flap 15 as shown in FIGS. 5, 6 and 12, the engagement with the locking portion 16a becomes stronger (particularly the locking as shown in FIG. 4A). On the other hand, there is a tendency that a molding defect that bends at the pressing portion 20 tends to occur. However, in the present invention, the pressing portion 20 is not parallel to the folding line 30, so that a molding defect is unlikely to occur.
Also, as shown in FIGS. 1, 2, 3, 7, 8, 9, 10 and 11, when the pressing part 20 starts slightly from the side end of the insertion flap 15, the risk of molding failure that is bent at the pressing part 20 is low. However, since the portion facing the locking portion 16a decreases, the engagement tends to be weakened. In these cases, the engagement is increased by increasing the portion facing the pressing portion 20 of the locking portion 16a. A response that does not weaken is possible.

  FIG. 13 is a schematic perspective view showing a packaging box of a comparative example. As shown in FIG. 13, the packaging box 50 of the comparative example includes a front plate 51, a side plate 52, a back plate (not shown), a lid portion 54, side flaps 56 and lid portions 54 formed at the end portions of the side plate 52. The insertion flap 55 is formed at the end of the side flap 56, and the side flap 56 has a locking portion 56a. However, since the insertion flap 55 has a notch 60, the locking portion 56a is cut off when the lid is opened. If the engagement with the notch 60 is not released well, and the lid is opened with the engagement, the insertion flap 55 and / or the side flap 56 may be damaged, and the packaging box for cosmetics or the like intended for design can be reused. May interfere with use.

Examples of the material of the packaging box of the present invention include packaging paper such as paperboard and kraft paper, synthetic paper, and plastic sheet. In consideration of the ease of exhibiting the effects of the present invention, easy processability, and the like, paper such as paperboard and kraft paper, and synthetic paper are preferred.
Examples of the plastic sheet include polyethylene terephthalate or a copolymer thereof, polypropylene or a copolymer thereof, polystyrene or a copolymer thereof, or a laminate thereof.
In order to enhance the aesthetics of the packaging box, it is preferable to decorate the surface of the packaging box by surface vapor deposition with metal, metal oxide, silicon oxide or the like, lamination of metal foil or the like, surface coating with resin or the like.

  The packaging box of the present invention is a product in containers such as various cylindrical bodies, polygonal cylinders, bottles, etc., and cosmetic products such as lipstick, perfume, nail polish and treatments, hair color, hair care products such as hair nail polish, etc. It is suitably used as a packaging box that accommodates.

DESCRIPTION OF SYMBOLS 10 Packing box 11 Front plate 12 Side plate 13 Back plate 14 Cover part 15 Insertion flap 16 Side flap 16a Locking part 16b Separation part 20 Press part 30 Folding line 40 of a cover part and an insertion flap 40 Opening and closing flap 50 Comparative example Packaging box 51 Front plate 52 Side plate 54 Lid 55 Insertion flap 56 Side flap 56a Locking portion 60 Notch

Claims (7)

A packaging box having a front plate, a side plate, a back plate, a lid, a side flap formed at an end of the side plate, and an insertion flap formed at an end of the lid, the side end of the side flap The part has a locking part, the insertion flap has a pressing part,
The pressing portion is disposed at a portion that can be engaged with the locking portion, and includes a concave portion on the front surface side of the insertion flap and a convex portion on the back surface side of the insertion flap, and is folded between the lid portion and the insertion flap. Placed so as not to be parallel to the line ,
The packaging box , wherein the pressing portion is inclined in a direction away from the folding line as it goes toward the center of the insertion flap . It said pressing portion, claim 1 is a curve having a tangent that varies linearly and / or angle range of less than 10 ° or 90 ° to the fold lines forms an angle of less than the fold lines and more than 10 ° 90 ° Packaging box as described in.   The packaging box according to claim 1, wherein the pressing portion has at least one selected from an oval, a rectangle, a rounded rectangle, and a circle.   The packaging box according to claim 1, wherein the pressing portion is a polygonal line and / or a wavy curve.   The packaging box in any one of Claims 1-4 which has an opening-and-closing flap in the edge part of the said cover part. The pressing portion is at least two types selected from an oval, a rectangle, a rounded rectangle and a circle, and an angle formed by a line segment connecting the centers of the two types and the folding line is 5 ° or more and less than 90 °. Item 4. A packaging box according to item 1. The packaging box according to claim 4, wherein the amplitude of the broken line and / or the wavy curve of the pressing portion is three times or more the line width.

Images