JP2023118599A - packaging box - Google Patents

Abstract

To acquire a packaging box in which a box body and a lid body formed by a piece of paper sheet respectively can be folded easily.SOLUTION: A box body 1 includes: first side wall plates 6 provided at opposing two sides of a bottom plate; second side wall plates 8 provided at the other opposing two sides; and first fixing pieces 10 provided at both side end edges of the first side wall plate 6 and fixed by being overlapped on the inner surface side of the second side wall plate 8. At the second side wall plate 8, sixth folding ruled lines 15 are provided extending from lower end corner parts of both sides at an angle of 45 degrees, and the first fixing piece 10 is bonded and fixed to the second side wall plate 8 within a range of the outside of the sixth folding ruled lines 15. A lid body 3 includes: third side wall plates 22 provided at opposing two sides of a top plate 20; fourth side wall plates 24 provided at the other opposing two sides; and second fixing pieces 26 provided at both side end edges of the third side wall plate 22 and fixed by being overlapped on the inner surface side of the fourth side wall plate 24. At the fourth side wall plate 24, eleventh folding ruled lines 29 are provided extending from lower end corner parts of both sides at an angle of 45 degrees, and the second fixing piece 26 is fixed to the fourth side wall plate 24 within a range of the outside of the eleventh folding ruled lines 29.SELECTED DRAWING: Figure 1

Description

The present invention is a packaging box comprising a box body and a lid each formed of a single paper sheet.

A packaging box consisting of a box body and a lid made of a single sheet of paper, in which a pair of first side wall plates are provided on two opposite sides of a rectangular bottom plate via crease lines. a pair of second side wall plates provided on the other two opposite sides of the bottom plate via crease lines, respectively; and fixing provided on both side edges of the pair of first side wall plates via crease lines, respectively There is known a box body formed by stacking fixing pieces provided on both side edges of the first side wall plate and fixing them to the inner surface side of the pair of second side wall plates (for example, Patent References 1 and 2).

JP 2004-299732 A JP 2021-88367 A

In a packaging box of this type, which is composed of a box body and a lid, as seen in Patent Documents 1 and 2, the box body has fixing pieces provided at both side edges of the first side wall plate, which are attached to the pair of second side wall plates. Since the boxes are stacked and fixed on the inner surface side, the box body is in a state of being fixed in a predetermined shape and cannot be folded, nor is it supposed to be folded. Therefore, this type of packaging box has a problem of bulky storage and poor transportation efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging box in which a box body and a lid, both of which are made of a single sheet of paper, can be easily folded.

In order to achieve the above object, the invention according to claim 1 is a packaging box comprising a box body and a lid each formed of a single paper sheet, wherein the box body has a rectangular shape. A pair of first side wall plates provided on two opposite sides of the bottom plate via first folding lines, respectively, and a pair of first side wall plates provided on the other two opposing sides of the bottom plate via second folding lines, respectively A pair of second side wall plates, and a first side wall plate provided on both side edges of the pair of first side wall plates via third crease lines and fixed to the inner surface side of the pair of second side wall plates. A fixed piece and a first inward piece provided on the outer edge of the first side wall plate via a fourth crease line. The first fixing piece is fixed to the second side wall plate within a range outside the sixth folding line, and the lid body is rectangular. A pair of third side wall plates provided on two opposite sides of the shaped top plate via seventh fold lines, respectively, and a pair of third side walls on the other two opposite sides of the top plate via eighth fold lines, respectively. A pair of fourth side wall plates and a pair of third side wall plates are provided on both side edges of the pair of third side wall plates via ninth crease lines, respectively, and are fixed to be overlapped on the inner surface side of the pair of fourth side wall plates. and an inner folded piece provided on the outer edge of the third side wall plate via a tenth crease line. An eleventh crease line extending at an angle of 45 degrees is provided, and the second fixing piece is fixed to the fourth side wall plate within a range outside the eleventh crease line.

According to the invention of claim 1, the box body is provided with sixth crease lines extending at an angle of 45 degrees from the lower end corners on both sides of the second side wall plate on the second side wall plate, The first fixing pieces provided on both side edges of the first side wall plate are fixed to the second side wall plate within the range outside the sixth crease line, so that the second side wall plate is fixed to the sixth side wall plate. By folding the second side wall plate inward from the second crease line while folding inward from the crease line, the second side wall plate can be overlapped with the bottom plate, and the second side wall plate can be folded inwardly. Subsequently to the folding, the first side wall plate and the first inward piece are made flush with each other, and the first side wall plate is folded inward from the first crease line to form the first side wall plate and the first inward piece. A first inwardly facing piece may overlap the bottom plate and the second side wall plate overlapping the bottom plate.

When the second side wall plate is folded inward from the sixth crease line, the first fixing piece is fixed to the second side wall plate within a range outside the sixth crease line. Therefore, the second side wall plate can be easily folded in from the sixth folding line without being restricted by the first fixing piece.

Also in the lid, the fourth side wall plate is provided with the eleventh crease line extending at an angle of 45 degrees from the lower end corners on both sides of the fourth side wall plate, and the third side wall plate The second fixing pieces provided on both side edges of the are fixed to the 4 side wall plates within the range outside the 11th crease line, so that the 4th side wall plate is arranged inward from the 11th crease line. The fourth side wall plate can be superimposed on the top plate by folding the fourth side wall plate inward from the eighth crease line while folding the fourth side wall plate inward, and following the inward folding of the fourth side wall plate, Then, with the third side wall plate and the inner folded piece on the same plane, the third side wall plate and the inner folded piece are folded inward from the seventh folding line, thereby folding the third side wall plate and the inner folded piece into the It can be overlaid on the top plate and the fourth side wall plate overlying the top plate.

When the fourth side wall plate is folded inward from the eleventh crease line, the second fixing piece is fixed to the fourth side wall plate within a range outside the eleventh crease line. Therefore, the folding of the fourth side wall plate from the eleventh crease line is not restricted by the second fixing piece, and can be easily folded.

In this way, the box main body and the lid can be folded into a flat shape, so that they are not bulky when stored and can be easily handled during transportation.

In use, the folded box body can be expanded by pulling up the folded first side wall plate and the first inward piece to expand the first side wall plate and the first inward piece. , the second side wall plate can be raised and returned to the box shape.

After forming the box shape, the first inward piece provided on the outer edge of the first side wall plate is bent inward from the fourth crease line to form the first inward piece and the first inward piece. The two inward pieces serve as ribs to prevent deformation of the opening of the box body, and the box body with high shape retention can be obtained.

In the folded lid, the third side wall plate, the inner folded piece, and the fourth side wall plate are formed by pulling up and expanding the folded third side wall plate and the inner folded piece. It can be put back into a lid shape that rises and covers the box body.

After forming into a lid shape, the inner folding piece provided on the outer edge of the third side wall plate is folded inward from the tenth crease line so as to overlap the inner surface of the third side wall plate, The inner folded piece serves as a reinforcing plate for the third side wall plate, and can prevent deformation of the opening of the lid body, thereby obtaining the lid body with high shape retention.

Further, when the lid body is put on the box body, the folded inner folded piece is pressed against the outer surface of the first side wall plate of the box body due to its restoring force, and the lid body is separated from the box body. can be prevented from coming off.

The invention according to claim 2 is the invention according to claim 1, wherein a second inward piece is provided on the outer edge of the second side wall plate via a fifth crease line, and the second inward piece is characterized in that an extension crease line extending from a sixth crease line provided on the second side wall plate is provided.

According to the second aspect of the invention, since the second inward piece is provided with an extended crease line extending from the sixth crease line provided on the second side wall plate, the second side wall plate With the second inward piece on the same plane, the second side wall plate and the second inward piece are folded inward from the sixth crease line, and the second side wall plate and the second inward piece are folded inward from the second crease line. The second side wall plate and the second inward piece can be overlaid on the bottom plate by folding the second side wall plate and the second inwardly directed piece.

After forming a box shape, the first inward piece provided on the outer edge of the first side wall plate is bent inward from the fourth crease line, and the outer edge of the second side wall plate is folded. By folding the provided second inward piece inward along the fifth crease line, the first inward piece and the second inward piece act as ribs to deform the opening of the box body. It is possible to prevent the deformation and obtain the box body having a higher shape retention property.

According to the invention of claim 3, in the first side wall plate of the box body according to claim 1 or 2, a notch for forming a protrusion is formed from the fourth crease line attached to the outer edge. is provided.

According to the third aspect of the present invention, the first side wall plate of the box body is provided with a notch for forming a projection from the fourth crease line attached to the outer edge. When the first inward piece is folded inward from the fourth folding line, a portion surrounded by the protrusion forming cut provided in the first side wall plate is cut out to form the fourth fold. It protrudes from the ruled line to the outer surface side. As a result, when the lid covering the box body is lifted up, the upward facing end of the inner folded piece folded inward is hooked on the projecting part and lifted from the box body. detachment of the lid can be more effectively prevented.

As described above, according to the packaging box of the present invention, the box main body and the lid, each formed of a single paper sheet, can be easily folded into a flat shape. It is not bulky, and handling such as transportation is easy, and the folded box body and lid can be easily returned to the box shape and the lid shape at the time of use. The box body and the lid body have a high shape retention property, and the detachment of the lid body from the box body can be effectively prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a partially notched perspective view which shows an example of embodiment of the packaging box which concerns on this invention. It is an expanded view of a box main body. FIG. 4 is an explanatory diagram showing a state where the box body starts to be folded. It is explanatory drawing which shows the process which folds a box main body. It is an expanded view of a lid. FIG. 10 is an explanatory diagram showing a folding start state of the lid. It is explanatory drawing which shows the process which folds a cover body. It is a partially broken cross-sectional view showing a state in which the lid body is put on the box body.

Hereinafter, one example of the form of the packaging box according to the present invention will be described in detail with reference to the drawings.
1 to 8 show an example of an embodiment of a packaging box according to the present invention, FIG. 1 is a partially cutaway perspective view of the packaging box of this example, FIG. 3 is an explanatory view showing the starting state of folding the box body, FIG. 4 is an explanatory view showing the process of folding the box body, FIG. 5 is an exploded view of the lid, and FIG. 6 is an explanatory view showing the starting state of folding the lid. 7 is an explanatory view showing the process of folding the lid, and FIG. 8 is a partially cutaway cross-sectional view showing the state in which the lid is put on the box body.

In the packaging box 1 of this example, both the box body 2 and the lid 3 are assembled from one paper sheet.

As shown in the developed view of FIG. 2, the box main body 2 constituting the packaging box 1 of this embodiment has a pair of first side wall plates on two opposite sides of a rectangular bottom plate 4 with first crease lines 5 therebetween. 6 are provided, and a pair of second side wall plates 8 are provided on the other two opposite sides of the bottom plate 4 with a second crease line 7 therebetween.

First fixing pieces 10 are provided on both side edges of the first side wall plate 6 so as to be overlapped and fixed to the inner surface side of the second side wall plate 8 via the third crease line 9 . A first inward piece 12 is provided on the outer edge of the first side wall plate 6 with a fourth crease line 11 interposed therebetween.
In this example, a second inward piece 14 is also provided on the outer edge of the second side wall plate 8 via a fifth crease line 13 .

The second side wall plate 8 is provided with sixth crease lines 15 extending at an angle of 45 degrees from both lower corners of the second side wall plate 8 . Further, the second inward piece 14 is also provided with an extension crease line 15 a extending from the sixth crease line 15 provided on the second side wall plate 8 .

Further, in this example, the first side wall plate 6 of the box body 2 is provided with a notch 16 for forming a protrusion from the fourth crease line 11 attached to the outer edge thereof.

The box body 2 of this example having such a developed structure is formed as follows.
A first side wall plate 6 provided on two opposite sides of the bottom plate 4 is bent and raised from the first crease line 5, and a second side wall plate 8 provided on the other two opposite sides of the bottom plate 4 is bent. are bent from the second folding line 7 and raised, and the first fixing pieces 10 provided on both side edges of the first side wall plate 6 are folded inward from the third folding line 9 to the inner surface side of the second side wall plate 8. Then, the first fixing piece 10 is fixed to the second side wall plate 8 within the range outside the sixth crease line 15 .

In this example, adhesive bonding is used as the fixing means. The adhesive is applied to a portion of the second side wall plate 8 outside the sixth folding line 15, and the first fixing piece 10 is adhered. there is 17 is an adhesive application portion, and 18 is a bonding portion between the second side wall plate 8 and the first fixed piece 10 . The fixing means is not limited to adhesive.

After forming the box shape in this manner, the first inward piece 12 provided on the outer edge of the first side wall plate 6 is bent inward from the fourth crease line 11 to form a flange, and the second side wall plate 8 is bent inward. The second inward piece 14 provided at the outer edge of the is bent inward from the fifth crease line 13 into a flange shape. When the first inward piece 12 is folded inward from the fourth crease line 11, the portion surrounded by the protrusion forming cuts 16 provided in the first side wall plate 6 is cut out and becomes the protrusion 19, forming the fourth fold. It protrudes outward from the crease line 11 .
Thus, the box body 2 is formed.

As shown in the developed view of FIG. 5, the lid 3 constituting the packaging box 1 of this embodiment has a pair of third sidewalls on two opposite sides of a rectangular top plate 20 with seventh crease lines 21 therebetween. A plate 22 is provided, and a pair of fourth side wall plates 24 are provided on the other two opposite sides of the top plate 20 with an eighth crease line 23 interposed therebetween.

A second fixing piece 26 is provided on both side edges of the third side wall plate 22 so as to be overlapped and fixed to the inner surface side of the fourth side wall plate 24 via a ninth folding line 25 . An inner folding piece 28 is provided on the outer edge of the third side wall plate 22 via a tenth folding line 27 . The fourth side wall plate 24 is provided with eleventh crease lines 29 extending from the lower corners on both sides of the fourth side wall plate 24 at an angle of 45 degrees.

The lid body 3 of this example having such an unfolded structure is formed as follows.
The third side wall plate 22 provided on two opposite sides of the top plate 20 is bent and raised from the seventh folding line 21, and the fourth side wall plate provided on the other two opposite sides of the top plate 20 is bent. The plate 24 is bent from the eighth crease line 23 and raised, and the second fixing pieces 26 provided on both side edges of the third side wall plate 22 are bent inward from the ninth crease line 25 to form the inner surface side of the fourth side wall plate 24. , and the second fixing piece 26 is fixed to the fourth side wall plate 24 within the range outside the eleventh crease line 29 .

In this example, adhesive bonding is used as the fixing means. The adhesive is applied to a portion of the fourth side wall plate 24 outside the eleventh folding line 29, and the second fixing piece 26 is adhered. there is 30 is an adhesive application portion, and 31 is an adhesion portion between the fourth side wall plate 24 and the second fixed piece 26 . The fixing means is not limited to adhesive.

After the cover is formed in this manner, the inner folding piece 28 provided on the outer edge of the third side wall plate 22 is folded inward from the tenth folding line 27 so as to overlap the inner surface of the third side wall plate 22 . .
Thus, the lid body 3 is formed.

The box body 2 and the lid 3 constituting the packaging box 1 of this example formed as described above can be folded in the following manner.

When folding the box body 2, as shown in FIG. 3, first, the first inwardly directed piece 12 to be folded inward is erected so that the first side wall plate 6 and the first inwardly directed piece 12 are flush with each other. , the second inward piece 14 which is similarly bent inward is erected so that the second side wall plate 8 and the second inward piece 14 are flush with each other.

From this state, as shown in FIG. 4, the second side wall plate 8 is folded inward from the sixth folding line 15, and the second inward piece 14 is folded inward from the extended folding line 15a extending from the sixth folding line 15. Meanwhile, by folding the second side wall plate 8 and the second inward piece 14 inward from the second crease line 7, the second side wall plate 8 and the second inward piece 14 are folded so as to overlap the bottom plate 4, and After folding the second side wall plate 8 and the second inward piece 14 inwardly, the first side wall plate 6 is folded inward along the first crease line 5 so that the first side wall plate 6 and the first inward piece 14 are folded inwardly. 12 is folded so as to overlap the bottom plate 4 and the second side wall plate 8 and the second inward piece 14 which overlaps the bottom plate 4 .

When the second side wall plate 8 and the second inward piece 14 are folded inward from the sixth crease line 15 , the first fixing piece 10 is attached to the second side wall plate 8 in the area outside the sixth crease line 15 . Therefore, the folding of the second side wall plate 8 and the second inward piece 14 from the sixth folding line 15 and the extended folding line 15a is not restricted by the first fixing piece 10, and can be easily folded. can be done.
In this manner, the box body 2 can be folded flat.

When the box body 2 is folded, the first side wall plate 6, the first inward piece 12, and the second side wall plate 6, the first inward piece 12, and the second side wall plate 6 and the first inward piece 12 are opened by pulling up and expanding the folded first side wall plate 6 and the first inward piece 12 when in use. The side wall plate 8 and the second inward piece 14 can be raised and returned to the box shape.

After forming the box shape, the first inward piece 12 provided at the outer edge of the first side wall plate 6 is bent inward from the fourth crease line 11, and provided at the outer edge of the second side wall plate 8. By folding the second inward piece 14 inward along the fifth crease line 13, the first inward piece 12 and the second inward piece 14 act as ribs to prevent deformation of the opening of the box body 2. can do.

Next, when folding the lid body 3, as shown in FIG. 6, first, the inner folding piece 28 that is folded back inward is erected so that the third side wall plate 22 and the inner folding piece 28 are flush with each other.

From this state, as shown in FIG. 7, the fourth side wall plate 24 is folded inward from the eleventh folding line 29 while folding the fourth side wall plate 24 inward from the eighth folding line 23, thereby forming the fourth side wall plate. 24 is folded so as to overlap the top plate 20, and following the folding of the fourth side wall 24 plate inward, the third side wall plate 22 is folded inward from the seventh folding line 21, thereby forming the third side wall plate 22. and the inner folded piece 28 is folded so as to overlap the top plate 20 and the fourth side wall plate 24 overlapping the top plate 20 .

When the fourth side wall plate 24 is folded inward from the eleventh crease line 29, the second fixing piece 26 is fixed to the fourth side wall plate 24 within the range outside the eleventh crease line 29. , and the folding of the fourth side wall plate 24 from the eleventh crease line 29 is not restricted by the second fixing piece 26, and can be easily folded.
Thus, the lid body 3 can be folded into a flat body.

In the folded lid body 3, the folded third side wall plate 22 and the inner folded piece 28 are pulled up and expanded, so that the third side wall plate 22, the inner folded piece 28, and the fourth side wall plate 24 stand up. It can be returned to a lid shape covering the main body 2 .

After forming into a lid shape, the inner folding piece 28 provided at the outer edge of the third side wall plate 22 is folded inward from the tenth folding line 27 so as to overlap the inner surface of the third side wall plate 22, The inner folded piece 28 serves as a reinforcing plate for the third side wall plate 22 and can prevent the opening of the lid 3 from being deformed.

In this example, the first side wall plate 6 of the box body 2 is provided with a notch 16 for forming a projection from the fourth crease line 11 attached to the outer edge, as shown in FIG. 2, when the first inward piece 12 is folded inward from the fourth crease line 11, a portion surrounded by the protrusion forming cut 16 provided in the first side wall plate 6 is cut out to form a protrusion 19. It protrudes outward from the fourth crease line 11, so that when the lid 3 placed on the box body 2 is lifted, the upwardly facing end of the inner folding piece 28 folded inward protrudes. By hooking on the portion 19, the lid 3 can be effectively prevented from coming off from the box body 2. - 特許庁

1 Packaging box 2 Box body 3 Lid 4 Bottom plate 5 First folding line 6 First side wall plate 7 Second folding line 8 Second side wall plate 9 Third folding line 10 First fixing piece 11 Fourth folding line 12 First inside Orienting piece 13 Fifth crease line 14 Second inward piece 15 Sixth crease line 15a Extension crease line 16 Protrusion forming notch 17 Adhesive application section 18 Bonding section 19 Protrusion 20 Top plate 21 Seventh crease line 22 3 side wall plate 23 8th crease line 24 4th side wall plate 25 9th crease line 26 2nd fixed piece 27 10th crease line 28 inner fold piece 29 11th crease line 30 adhesive application portion 31 adhesion portion

Claims (3)

A packaging box comprising a box body and a lid each formed of a single paper sheet, wherein the box body is provided on two opposite sides of a rectangular bottom plate via first crease lines. a pair of first side wall plates, a pair of second side wall plates provided on the other two opposite sides of the bottom plate via second crease lines, respectively, and both side ends of the pair of first side wall plates A first fixing piece provided on each edge via a third crease line and fixed to the inner surface side of the pair of second side wall plates in an overlapping manner; and a fourth crease line on the outer edge of the first side wall plate. a first inward piece provided through the second side wall plate, the second side wall plate is provided with sixth crease lines extending at an angle of 45 degrees from the lower end corners on both sides thereof, and the first fixed piece is fixed to the second side wall plate within the range outside the sixth folding line,
In addition, the lid body includes a pair of third side wall plates provided on two opposite sides of the rectangular top plate via seventh folding lines, respectively, and a pair of third side wall plates on the other two opposite sides of the top plate. A pair of fourth side wall plates provided via eighth crease lines, respectively; The fourth side wall plate is composed of a second fixed piece that is overlapped and fixed on the inner surface side, and an inner folded piece that is provided on the outer edge of the third side wall plate via a tenth folding line, and the fourth side wall plate includes: Eleventh crease lines extending at an angle of 45 degrees are provided from the lower corners on both sides thereof, and the second fixing piece is fixed to the fourth side wall plate within the range outside the eleventh crease line. A packaging box characterized by: A second inward piece is provided on the outer edge of the second side wall plate via a fifth crease line, and the second inward piece extends from a sixth crease line provided on the second side wall plate. 2. The packaging box of claim 1, wherein an elongated folding crease is provided. 3. The package according to claim 1, wherein the first side wall plate of the box body is provided with a notch for forming a protrusion from the fourth crease line attached to the outer edge. box.

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