JP6808938B2 - Packaging box - Google Patents

Description

The present invention relates to a packaging box.

When disposing of the wrap-round type packaging box, the plurality of flaps constituting the side wall are peeled off and separated to form the packaging box into a square tube shape, and then the packaging box is folded (for example, Patent Document). 1).

Japanese Unexamined Patent Publication No. 2003-26154

As described above, the conventional wrap-round type packaging box has a problem that the disposal work of the packaging box becomes complicated because it is necessary to separate all the flaps of the side wall when folding.

An object of the present invention is to solve the above-mentioned problems and to provide a wrap-round type packaging box that can be easily folded.

In order to solve the above problems, the packaging box of the present invention includes a bottom plate, a pair of front and rear end walls connected to the front and rear edges of the bottom plate, and a top plate connected to the upper edges of both end walls. , With a pair of left and right side walls. The side wall includes front and rear side flaps connected to both end walls, an upper flap connected to the top plate, and a lower flap connected to the bottom plate. The upper flap and the lower flap are joined to the outer surfaces of the front and rear side flaps. A first ruled line extending in the left-right direction is formed in the central portion of the bottom plate in the front-rear direction, and a first ruled line extending in the vertical direction is formed in the central portion of the upper flap and the lower flap in the front-rear direction. Two ruled lines are formed. A first perforation extending in the left-right direction is formed at the central portion of the top plate in the front-rear direction, and a second perforation is formed at the left and right edges of the top plate. The lower flap is formed with a pair of front and rear third perforations extending from the middle portion of the upper edge portion to the front and rear ends of the lower edge portion. The said top plate is formed with a front region and a back region by the boundary of the first perforation, the rear edge of the front region is a recess I recessed toward the front .. The leading edge of the rear region is formed butt piece that protrudes forward, the recess is closed by the projecting piece. The first perforation, the second perforation, and the third perforation are cut open, and the bottom plate and both side walls are folded in half at the central portion in the front-rear direction, and the front region and the rear region of the top plate are formed. The protruding pieces can be bent and engaged in the recesses when they are stacked.

When folding the packaging box of the present invention, the first perforation and the second perforation of the top plate are cut open to divide the top plate into two front and rear parts. Also, each third perforation is cut open to separate the middle portion of the lower flap from the side wall. This makes it possible to fold the bottom plate and both side walls in half at the center in the front-rear direction.
Therefore, in the present invention, when the wrap-round type packaging box is discarded, the packaging box can be easily folded without separating all the flaps on the side wall.

In addition, when cutting open the first perforation and the second perforation, first push the protruding piece to open the recess, put your finger on the recess, and pull the top plate to pull the top plate. Can be easily opened.
Further, in the above-described configuration, when the front side region and the rear side region of the top plate are overlapped when the packaging box is folded, the concave portion of the front side region and the protruding piece of the rear side region overlap. Then, when the protruding piece is bent and pushed into the recess, the protruding piece is engaged with the recess. As a result, the front region and the rear region of the top plate can be held in an overlapping state. The protruding piece is a portion for locking the rear region of the top plate to the front region, and the protruding piece can prevent the folded packaging box from swelling due to the restoring force.

In the packaging box described above, when a finger hook hole is opened in the side flap, it is preferable to overlap the middle portion of the upper edge portion of the lower flap with a part of the finger hook hole.
In this configuration, the third perforation can be easily cut by hooking a finger on the finger hook and pulling the middle portion of the lower flap.

In the present invention, since the wrap-round type packaging box can be easily folded, the disposal work of the packaging box can be simplified.

It is a perspective view which looked at the packaging box which concerns on embodiment of this invention from the front upper right. It is a blank sheet which showed the packaging box which concerns on embodiment of this invention. It is a figure which showed the procedure of folding the packaging box which concerns on embodiment of this invention, is the perspective view which looked at the state which each perforation was cut open from the front upper right. It is a figure which showed the procedure of folding the packaging box which concerns on embodiment of this invention, and is the perspective view which looked at the state which each perforation was cut open from the lower right front. It is a perspective view which looked at the folded state of the packaging box which concerns on embodiment of this invention from the front upper right.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front-back and left-right directions are set for convenience in explaining the packaging box 1, and do not limit the configuration of the packaging box 1.

As shown in FIG. 1, the packaging box 1 is a rectangular parallelepiped box of a wrap-round type, and has a bottom plate 10, a pair of front and rear end walls 11 and 12, a pair of left and right side walls 13, 14 and a top plate 15. I have.

As shown in FIG. 2, the packaging box 1 is formed by folding a blank sheet S obtained by cutting out a single corrugated cardboard sheet into mountain folds or valley folds at each ruled line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side can be seen.
Each ruled line (folded line) of the blank sheet S is a linear groove formed by pushing the surface of the blank sheet S.
A notch may be formed in the ruled line. In this way, the blank sheet S can be easily bent at the ruled line.

As shown in FIG. 1, the bottom plate 10 is formed in a rectangular shape (see FIG. 4), and is formed larger in the left-right direction than in the front-rear direction. A front end wall 11 and a rear end wall 12 are continuously provided on the front and rear edges of the bottom plate 10 via ruled lines L1 and L2.

The front end wall 11 is raised upward from the front edge portion of the bottom plate 10. The front end wall 11 is formed perpendicular to the bottom plate 10. The front end wall 11 is formed in a rectangular shape, and is formed larger in the left-right direction than in the up-down direction.
The rear end wall 12 is raised upward from the trailing edge of the bottom plate 10. The rear end wall 12 has the same outer shape as the front end wall 11, and is formed perpendicular to the bottom plate 10.

A top plate 15 is continuously provided on the upper edge of the front end wall 11 via a ruled line L3.
The top plate 15 extends rearward from the upper edge of the front end wall 11. The top plate 15 has the same outer shape as the bottom plate 10 and is formed perpendicular to the front and rear end walls 11 and 12.

A joint piece 16 is continuously provided on the upper edge of the rear end wall 12 via a ruled line L4. The joint piece 16 is formed in a band shape along the upper edge portion of the rear end wall 12.
By joining the rear end portion of the top plate 15 to the upper surface of the joint piece 16 while bending the blank sheet S (see FIG. 2) along the ruled lines L1 to L4, the rear end wall 12, the bottom plate 10, the front end wall 11, and the top plate 15 are formed. It comes to have a square tube shape.

The right side wall 14 is formed perpendicular to the right edge of the bottom plate 10 and the right edge of the top plate 15. The right side wall 14 includes a front side flap 21 connected to the front end wall 11, a rear side flap 22 connected to the rear end wall 12, and an upper flap 31 connected to the top plate 15. , A lower flap 32 connected to the bottom plate 10 in succession.

The front side flap 21 is connected to the right edge of the front end wall 11 via a ruled line L5. The front side flap 21 extends rearward from the right edge of the front end wall 11. The front side flap 21 is formed perpendicular to the front end wall 11.

The rear side flap 22 is connected to the right edge of the rear end wall 12 via a ruled line L6. The rear side flap 22 extends forward from the right edge of the rear end wall 12. The rear side flap 22 is formed perpendicular to the rear end wall 12.

The length of the front side flap 21 and the rear side flap 22 in the front-rear direction is half the length of the bottom plate 10 and the top plate 15 in the front-rear direction. The right side surface of the packaging box 1 is closed by the flaps 21 and 22 on both sides.

A rectangular recessed portion 23a is formed at the tip edge portion (rear edge portion) of the front side flap 21. Further, a rectangular recessed portion 23a is also formed at the tip edge portion (front edge portion) of the rear side flap 22. The rectangular recessed portion 23a is formed on the upper portion of the side flaps 21 and 22.
By connecting the front and rear recesses 23a and 23a formed on the upper portions of the flaps 21 and 22 on both sides, an opening 23 extending in the front-rear direction is formed.

A semicircular recess 24a that is recessed toward the front is formed at the tip edge portion (rear edge portion) of the front side flap 21. Further, a semicircular recessed portion 24a that is recessed toward the rear is formed at the tip edge portion (front edge portion) of the side flap 22 on the rear side. The semicircular recess 24a is formed in the lower part of the side flaps 21 and 22.
A circular finger hook hole 24 is formed by connecting the front and rear recessed portions 24a and 24a formed in the lower portions of the flaps 21 and 22 on both sides.

A rectangular side protruding piece 25 is formed on the tip edge portion (rear edge portion) of the front side flap 21.
The upper and lower edges of the side protruding piece 25 are separated from the side flap 21 by a cut line. The length of the side protruding piece 25 in the front-rear direction of the present embodiment is about 1/4 of the length of the side flap 21 in the front-rear direction.
A side protruding piece 25 is also formed at the tip edge portion (front edge portion) of the rear side flap 22.
The side projecting piece 25 is formed at the central portion of the side flaps 21 and 22 in the vertical direction. The front and rear side projecting pieces 25, 25 are formed symmetrically in the front and rear directions.

The upper flap 31 is continuously provided on the right edge of the top plate 15 via the second perforation L22. The upper flap 31 extends downward from the right edge of the top plate 15. The upper flap 31 is formed perpendicular to the top plate 15.

The vertical length of the upper flap 31 is about 1/3 of the vertical length of the front and rear end walls 11 and 12.
The inner surface of the upper flap 31 is joined to the upper part of the outer surface of the front and rear side flaps 21 and 22 by an adhesive.

The upper flap 31 is formed with a handle hole 33 extending in the front-rear direction. The handle hole 33 is a portion on which a finger is hung when the packaging box 1 is lifted. The entire handle hole 33 is overlapped with the opening 23.
In the state of the blank sheet S shown in FIG. 2, the handle hole 33 is closed by the wall portion 33a. The upper edge portion and the left and right edge portions of the wall portion 33a are separated from the upper flap 31 by a cut line, and the lower edge portion of the wall portion 33a is connected to the upper flap 31 via a ruled line.

When the packaging box 1 shown in FIG. 1 is lifted, the wall portion 33a in the handle hole 33 is pushed in to open the handle hole 33. At this time, since the opening 23 is arranged inside the handle hole 33, the wall portion 33a in the handle hole 33 can be reliably pushed in. Then, the packaging box 1 can be lifted by hooking a finger on the opened handle hole 33 and the opening 23.

The lower flap 32 is continuously provided on the right edge of the bottom plate 10 via a ruled line L7. The lower flap 32 extends upward from the right edge of the bottom plate 10. The lower flap 32 is formed perpendicular to the bottom plate 10.
The vertical length of the lower flap 32 is about 1/3 of the vertical length of the front and rear end walls 11 and 12.
The inner surface of the lower flap 32 is bonded to the lower part of the outer surface of the pair of front and rear side flaps 21 and 22 by an adhesive.

The upper edge of the lower flap 32 overlaps the lower half of the finger hole 24. As a result, the lower half of the finger hook hole 24 is closed by the lower flap 32, and the upper half of the finger hook hole 24 is exposed to the outside.

The left side wall 13 is formed perpendicular to the right edge of the bottom plate 10 and the left edge of the top plate 15. The left side wall 13 and the right side wall 14 have a symmetrical structure. The left side wall 13 is composed of front and rear side flaps 21 and 22, an upper flap 31 (see FIG. 2) and a lower flap 32 (see FIG. 2), similarly to the right wall 14.

As shown in FIG. 2, a first ruled line L10 extending in the left-right direction is formed on the inner surface of the bottom plate 10. The first ruled line L10 is formed at the center of the bottom plate 10 in the front-rear direction. The first ruled line L10 is formed in a straight line from the left edge portion to the right edge portion of the bottom plate 10. The first ruled line L10 is a fold line for folding the bottom plate 10 (see FIG. 5).

A second ruled line L11 extending in the vertical direction is formed on the inner surface of the upper flap 31. The second ruled line L11 is formed at the center of the upper flap 31 in the front-rear direction. The second ruled line L11 is formed from the upper edge portion to the lower edge portion of the upper flap 31. The second ruled line L11 is a fold line for folding the upper flap 31 (see FIG. 5).

Similar to the upper flap 31, a second ruled line L11 extending in the vertical direction is also formed on the inner surface of the lower flap 32. The second ruled line L11 of the lower flap 32 is a fold line for folding the lower flap 32 (see FIG. 5).

As shown in FIG. 1, the top plate 15 is formed with a first perforation L21 extending in the left-right direction. The first perforation L21 is formed at the central portion of the top plate 15 in the front-rear direction. The first perforation L21 is formed in a straight line from the left edge portion to the right edge portion of the top plate 15.
The first perforation L21 is a zipper in which Y-shaped notches are intermittently formed, and each notch of the first perforation L21 penetrates the blank sheet S (see FIG. 2).

Left and right second perforations L22 and L22 are formed on the left and right edges of the top plate 15. The second perforation L22 is formed from the front end portion to the rear end portion of the right edge portion (upper edge portion of the upper flap 31) of the top plate 15.
The second perforation L22 is formed by intermittently forming linear notches, and each notch penetrates the blank sheet S (see FIG. 2).

A front region 15a and a rear region 15b are formed on the top plate 15 with the first perforation L21 as a boundary.
The front side region 15a is continuously provided on the upper edge portion of the front end wall 11 via the ruled line L3. The front side region 15a is a rectangular region surrounded by the ruled line L3, the left and right second perforations L22 and L22, and the first perforation L21.
The rear side region 15b is continuously provided at the upper edge portion of the rear end wall 12 via the ruled line L4. The rear side region 15b is a rectangular region surrounded by the ruled line L4, the left and right second perforations L22 and L22, and the first perforation L21.

A concave portion 15c recessed in a rectangular shape toward the front is formed in the central portion of the first perforation L21 in the left-right direction. The recess 15c is formed by perforations in which linear notches are intermittently formed.
In the recess 15c of the first perforation L21, a top protruding piece 15d that protrudes forward from the rear region 15b is formed. The inside of the recess 15c is closed by the top protruding piece 15d.

The lower flap 32 is formed with a pair of front and rear third perforations L40, 40 extending from the middle portion of the upper edge portion to the front and rear ends of the lower edge portion (ruled line L7).
The upper ends of the front and rear third perforations L40 and L40 are arranged at intervals in the front-rear direction.
The third perforation L40 is a zipper in which bent notches are formed intermittently, and each notch penetrates the blank sheet S (see FIG. 2).
The front and rear third perforations L40 and L40 are portions that serve as boundaries when the intermediate portion 32a of the lower flap 32 is separated from the side walls 13 and 14 (see FIG. 3).
In the upper edge of the lower flap 32, the region between the upper ends of both third perforations L40 and L40 serves as a cutting start portion when the intermediate portion 32a of the lower flap 32 is separated from the side walls 13 and 14. It is a part and overlaps with the finger hook hole 24.
In the lower flap 32, the left and right sides of the intermediate portion 32a are joined to the front and rear side flaps 21 and 22, and the intermediate portion 32a is not joined to the front and rear side flaps 21 and 22.

Next, the procedure for folding the packaging box 1 will be described.
The operator pushes in the top protruding piece 15d shown in FIG. 1 to open the recess 15c, puts a finger on the recess 15c, and pulls up the front region 15a and the rear region 15b of the top plate 15.
As a result, as shown in FIG. 3, the first perforation L21 and the left and right second perforations L22 and L22 are cut open, and the top plate 15 is divided into a front region 15a and a rear region 15b. Then, the front side region 15a and the rear side region 15b of the top plate 15 are raised on the upper edges of the front and rear end walls 11 and 12.

Subsequently, the operator hooks the fingertips on the finger hook holes 24 and 24 of the left and right side walls 13 and 14, and pulls the intermediate portion 32a of the lower flap 32 outward. As a result, the front and rear third perforations L40 and L40 are cut open, and the intermediate portion 32a of the lower flap 32 is separated from the side walls 13 and 14. Then, as shown in FIG. 4, the left and right lower flaps 32, 32 are tilted so that the intermediate portions 32a are flush with the bottom plate 10.

Subsequently, the first ruled line L10 of the bottom plate 10 and the second ruled lines L11, L11 of the left and right lower flaps 32, 32 are bent in a valley fold, and as shown in FIG. 5, the bottom plate 10 and both lower flaps 32, 32 are bent. Fold it in half in the front-back direction.

Further, at the same time that the bottom plate 10 and both lower flaps 32 and 32 are bent, the second ruled lines L11 and L11 of the left and right upper flaps 31 and 31 are bent in a valley fold, and both upper flaps 31 and 31 are bent in the front-rear direction. Fold it in half. As a result, the front and rear side flaps 21 and 22 overlap, and the left and right side walls 13 and 14 are folded in half in the front-rear direction.
As described above, when the bottom plate 10 and the side walls 13 and 14 are folded in half in the front-rear direction, the front end wall 11 and the rear end wall 12 overlap in the front-rear direction, and the front side region 15a and the rear side region 15b of the top plate 15 Overlap in the front-back direction. In this way, the packaging box 1 can be folded flat.

Further, when the front side region 15a and the rear side region 15b of the top plate 15 are overlapped with each other, the recess 15c of the front side region 15a and the top protruding piece 15d of the rear side region 15b overlap. Then, the top protruding piece 15d is bent forward.
In this way, the top protruding piece 15d is pushed into the recess 15c, and the top protruding piece 15d is engaged with the recess 15c. As a result, the front region 15a and the rear region 15b of the top plate 15 can be held in an overlapping state.

Further, when the front and rear side flaps 21 and 22 are overlapped, the front and rear side projecting pieces 25 and 25 overlap. Then, the projecting pieces 25, 25 on both sides are bent. In the present embodiment, the projecting pieces 25, 25 on both sides are bent forward.
In this way, the rear side protruding piece 25 is pushed into the cutout portion in which the front side protruding piece 25 is cut out, and the rear side protruding piece 25 is engaged with the front cutout portion. .. As a result, the front and rear side flaps 21 and 22 can be held in a stacked state.

In the packaging box 1 as described above, as shown in FIG. 3, the top plate 15 can be divided into two front and rear parts by cutting open the first perforation L21 of the top plate 15 and the left and right second perforations L22 and L22. it can. Further, as shown in FIG. 4, by cutting open each third perforation L40, the intermediate portions 32a and 32a of the left and right lower flaps 32 and 32 can be separated from the left and right side walls 13 and 14.
As a result, as shown in FIG. 5, the bottom plate 10 and the side walls 13 and 14 can be folded in half at the central portion in the front-rear direction.
Therefore, when the wrap-round type packaging box 1 is discarded, the packaging box 1 can be easily folded without separating all the flaps 21, 22, 31 and 32 of the side walls 13 and 14, so that the packaging box 1 can be easily folded. The disposal work of 1 can be simplified.

When the packaging box 1 is folded, the top protruding piece 15d holds the front region 15a and the rear region 15b of the top plate 15 in an overlapping state, and the side protruding pieces 25 fold the side walls 13 and 14 in half. It can be held in the state of. As a result, in the packaging box 1, it is possible to prevent the folded packaging box 1 from inflating due to the restoring force.

In the packaging box 1, when the first perforation L21 and the left and right second perforations L22 and L22 shown in FIG. 1 are cut open, the top protruding piece 15d is first pushed in to open the recess 15c, and a finger is hung on the recess 15c. Since the top plate 15 can be pulled, the first perforation L21 and the left and right second perforations L22 and L22 can be easily cut open.

In the packaging box 1, when the third perforation L40 is cut open, the third perforation L40 can be easily made by hooking a finger on the finger hook holes 24 of the side walls 13 and 14 and pulling the middle portion 32a of the lower flap 32. Can be cut open.

In the packaging box 1, the first ruled line L10 is formed on the inner surface of the bottom plate 10, and the second ruled lines L11 and L11 are formed on the inner surfaces of the upper flap 31 and the lower flap 32. Therefore, the ruled lines L10 and L11 formed in the central portion of the bottom plate 10 and the central portions of the side walls 13 and 14 cannot be seen from the outside of the packaging box 1, so that the appearance of the packaging box 1 can be improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention.
In the present embodiment, as shown in FIG. 5, the top protruding pieces 15d of the top plate 15 and the side protruding pieces 25 and 25 of the left and right side walls 13 and 14 are formed, but the number of the protruding pieces 15d and 25 And shape are not limited.

Although the packaging box 1 of the present embodiment is made of corrugated cardboard, the packaging box may be formed of various known paperboards.

1 Packaging box 10 Bottom plate 11 Front end wall 12 Rear end wall 13 Left side wall 14 Right side wall 15 Top plate 15a Front area 15b Rear area 15c Recess 15d Top protrusion 21 Front side flap 22 Rear side flap 23 Opening 24 Finger hook hole 25 Side protruding piece 31 Upper flap 32 Lower flap 33 Hand-held hole L10 1st ruled line L11 2nd ruled line L21 1st perforation L22 2nd perforation L40 3rd perforation S Blank sheet

Claims (2)

With the bottom plate
A pair of front and rear end walls connected to the front and rear edges of the bottom plate,
With the top plate connected to the upper edge of both end walls,
With a pair of left and right side walls,
The side wall
The front and rear side flaps that are connected to both end walls, respectively,
The upper flaps connected to the top plate and
A lower flap, which is connected to the bottom plate, is provided.
The upper flap and the lower flap are joined to the outer surfaces of the front and rear side flaps.
A first ruled line extending in the left-right direction is formed at the center of the bottom plate in the front-rear direction.
A second ruled line extending in the vertical direction is formed at the center of the upper flap and the lower flap in the front-rear direction.
A first perforation extending in the left-right direction is formed at the center of the top plate in the front-rear direction, and the top plate is formed.
Second perforations are formed on the left and right edges of the top plate.
A pair of front and rear third perforations extending from the middle portion of the upper edge portion to the front and rear ends of the lower edge portion are formed on the lower flap.
A front region and a rear region are formed on the top plate with the first perforation as a boundary.
The rear edge of the front area, the recess I recessed toward the front is formed,
The leading edge of the rear region, impact piece that protrudes forward is formed,
The inside of the recess is closed by the protruding piece ,
The first perforation, the second perforation, and the third perforation are cut open, and the bottom plate and both side walls are folded in half at the central portion in the front-rear direction, and the front region and the rear region of the top plate are formed. A packaging box characterized in that when the protrusions are stacked, the protruding pieces can be bent and engaged in the recesses . The packaging box according to claim 1.
The side flap has a finger hole.
A packaging box characterized in that an intermediate portion of an upper edge portion of the lower flap is overlapped with a part of the finger hook hole.

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