JP2020079113A - Packing box - Google Patents

Abstract

To provide a packing box with a lid stabilized when opened.SOLUTION: A packing box consists of: a square shaped upper opening box body 10 having a front plate 1, a rear plate, both side plates 2 and 2, and a bottom piece (a bottom plate); and a lid 20 connected to an upper edge of the rear plate through a folding line. The lid includes: an upper plate connected to the rear plate through the folding line; a front flap piece 12 connected to a front edge of the upper plate through the folding line; side flap pieces 13 and 13 connected to both side edges of the front flap piece through the folding line; and a gusset plate 14 connected through the folding line between an upper edges of both side flap pieces and a side edge of the upper plate. Respective flap pieces 8 are connected to the upper edges of both side plates through the folding lines, and a flap piece 15 is also connected to the side edge of the gusset plate through the folding line. The gusset plate is folded in a valley, is overlapped on both sides, and is placed along a back surface of the upper plate. The flap piece of the gusset plate is located inside the rear plate, the flap pieces on both side plates are located above the flap pieces on the gusset plate. The lid is stabilized by the engagement of the flap pieces.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rectangular packaging box that is sealed (sealed) by a lid.

An example of this type of rectangular packaging box will be described with reference to FIGS. 1 and 2 showing an embodiment of the present invention. A front plate 1, a rear plate 3, both side plates 2, 2, a bottom plate (bottom piece) 5 , 6 form a box-shaped box with a lid, and there is a box body having a similar box-shaped lid.
In the lid of such a packaging box with a lid, the lid plate (upper plate) of the lid is connected to the upper edge of the rear plate of the box body through fold lines, and both sides and front edges of the lid plate are connected through fold lines. The side flap piece and the front flap piece are connected, and the mesh flap pieces are connected to the upper edges of both side flap pieces through the crease line, and both side flap pieces and the front flap are valley-folded to the lid plate to stand up. Along with this, there is a configuration in which meshing flap pieces are meshed with each other to maintain the rising state of each flap piece and have a square shape in which the lower surface and the front surface are opened (see Patent Document 1, FIG. 1, FIG. 2, FIG. 6, etc.). ).

JP 2012-136253A

In the above conventional packaging box, the lid is connected to the rear plate of the box body through the upper plate thereof, and the lid is free to move with respect to the box body and is not stable. If the lid is not stable in this way, inconvenience may occur when the product is stored in the box body.
Further, the work of engaging the meshing flap pieces is complicated, and improvement thereof is desired.

  Under the above-mentioned actual conditions, the present invention aims to stabilize the lid and eliminate the meshing work when the lid is constructed.

In order to achieve the above object, the present invention is designed to stabilize the lid by engaging the flap piece of the box body with the flap piece of the lid.
Specifically, it comprises a rectangular box-shaped box body having an upper surface opening consisting of a front plate, a rear plate, both side plates, and a bottom plate, and a lid connected to the rear plate through a fold line, and the lid is An upper plate connected to the upper edge of the rear plate via a fold line, a front flap piece connected to the front edge of the upper plate, and side flap pieces connected to both side edges of the front flap piece, There is a gusset board connected via a fold line between the upper edge of the both side flap pieces and the side edge of the upper plate, and the gusset board is the upper edge of the side flap piece and the side edge of the upper plate. A central fold line that bisects the intersection angle of the two fold lines is formed.Flap pieces are connected to the upper edges of both side plates via the fold lines, and fold lines are also formed on the side edges of the gusset board. The flap pieces are connected to each other via the center crease line, and the flap pieces of the gusset board are folded along the back side of the upper plate by overlapping the both side pieces of the center crease line. A structure is adopted in which the flap pieces of both side plates are bent by folding along the line and positioned inside the rear plate, and the flap pieces of both side plates are bent over the folding plate and positioned above the flap piece of the gore board.

  In this way, when the flap pieces of the side panels are positioned inside the rear plate and the flap pieces of both side plates are positioned above the flap pieces of the side panels, the flap pieces of the side plates hold down the flap pieces of the lid. Therefore, the lid does not wobble with respect to the box body and is stable.

The packaging box of this configuration includes the front plate, the rear plate, the both side plates, the bottom plate, the upper plate, the front flap piece, the side flap pieces of the front flap piece, the gusset board, the flap pieces of the both side plates, and the flap piece of the gusset board. However, it is preferable to form it from a sheet of paper blank connected to each other via a crease line.
By doing so, it is possible to reduce the cost by reducing the attached portion as much as possible.

  Since the present invention is configured as described above, it is an inexpensive packaging box with a stable lid.

1 is a perspective view of an embodiment of a packaging box according to the present invention. Perspective view of the same embodiment with the lid open Partial perspective view for assembly explanation of the same embodiment Partial perspective view from the bottom side of the same embodiment The top view of the blank of the same embodiment The top view at the time of conveyance of the embodiment Partial enlarged cutaway side view of the same embodiment

One embodiment of the packaging box according to the present invention is shown in FIGS. 1 to 7, and the packaging box P is formed from the cardboard blank shown in FIG.
This blank includes a box body 10 in which a front plate 1, a rear plate 3, both side plates 2 and 2, bottom pieces (bottom plates) 5 and 6 are connected to each other via a fold line r, and a crease line to a rear plate 3 of the box body 10. upper plate 11 connected via r, front flap piece 12 connected to the front edge of the upper plate 11 via fold line r, and both side edges of front flap piece 12 via fold line r The lid 20 includes side flap pieces 13, 13 connected to each other, and a gore board 14 connected between the upper edges of both side flap pieces 13 and side edges of the upper plate 11 via a fold line r. ..

Flap pieces 8 are connected to the upper edges of both side plates 2 and 2 of the box body 10 via fold lines r.
On the gore board 14, the intersection angle a is bisected from an intersection a of both fold lines r, r between the upper edge of the side flap piece 13 and the side edge of the upper plate 11 (90 degrees is divided into 45 degrees and 45 degrees). ) A fold line r'is formed. A flap piece 15 is also connected to the side edge of the gore board 14 via a fold line r.
The fold line r is a line without cuts, and the r'is a perforation line.

In this blank, first, the side plate 2, the rear plate 3 and the side plate 2 are valley-folded with respect to the front plate 1 through the fold lines r, and the glue pieces 7 of the side plate 2 are attached to the back surface of the side edge of the front plate 1. Wear it to make a square frame. At the same time, the bottom pieces 5 and 6 are engaged with each other in the same manner as in the conventional case, and the back surface of the bottom piece 5 and the front surface of the bottom piece 6 are adhered to each other to form a bottom plate composed of the bottom pieces 5 and 6 shown in FIG. The main body 10 is configured.
The box body 10 allows the bottom piece 5 to be valley-folded along the middle fold line r′, and becomes a flat article by folding the bottom piece 5 in a valley fold as shown in FIG. 6. In the state where the box body 10 has a flat shape and is small in volume, a plurality of sheets are stacked and conveyed.

Next, when the folded bottom piece 5 is raised (folded into a mountain) from the flat packaging box, the box body becomes a bottomed square box shape in FIGS. 2 to 4.
In this state, both gusset plates 14 of the lid 10 are valley-folded through the center fold line r′, and both side pieces 14a, 14a of the fold line r′ are overlapped and placed along the upper plate 11 (FIGS. 3 and 7). ), the front flap piece 12 and the side flap pieces 13, 13 are valley-folded with respect to the upper plate 11 through the fold line r to form a rectangular body having an open front and bottom surfaces. At this time, the flap piece 15 of the goreboard 14 is bent at a right angle to the inside.

  In that state, the flap piece 8 of the side plate 2 is bent inward while covering the box body 10 with the lid 20 and is positioned above the flap piece 15 of the gore board 14 (see FIGS. 2 and 7). In this state, as shown in FIGS. 2 and 7, the end of the fold line r of the flap piece 8 of the side plate 2 and the end of the fold line r of the flap piece 15 of the lid 20 abut and mesh with each other to form the flap of the side plate 2. Since the flap piece 15 of the lid 20 is pressed by the piece 8, the lid 20 does not wobble with respect to the box body 10.

Further, since the fold line r of the flap piece 8 and the fold line r of the flap piece 15 mesh with each other and the flap piece 15 is pressed by the flap piece 8, the state along the upper plate 11 of the side panel 14 is also maintained, Swelling of the side flap pieces 13, 13 of the lid 20 is also suppressed, and the rectangular shape of the lid 20 is maintained. Therefore, it is not necessary to attach the goreboard 14 to the upper plate 11.
In this way, the lid 20 maintains a rectangular box shape without being attached. However, it is also possible to bond the upper panel 11 and the two pieces 14a of the upper panel 14 to each other.

Since the lid 20 is stable in this manner, it is easy to load the product when the lid 10 in FIG. 2 is open. The product may be loaded into the box body 10 not in this state but in any state in which it can be loaded. For example, it may be the box body 10 before the lid 20 is assembled (the box body 10 has a square shape from FIG. 6).
When the product is loaded, the box body 10 is covered with the lid 20 as shown in FIG.

  In this embodiment, since it is made from one sheet of paper blank, it is inexpensive, and compared with the case where the lid 20 is made as a separate member from the box body 10, the number of working steps is small and the cost is reduced.

  The material of the rectangular packaging box according to the present invention is not limited to cardboard, and various materials such as plastic plates and cardboard can be adopted. In the case of plastic, the front plate 1, the side plate 2, the rear plate 3 and the bottom pieces (bottom plates) 5 and 6 are made into a rectangular box main body 10 composed of a frame-shaped peripheral wall with a bottom integrally formed, and the lid 20 is connected via a fold line r. It can be a packed box.

P packaging box 10 box body 20 lid 1 box body front plate 2 same side plate 3 rear plates 5 and 6 same bottom piece (bottom plate)
7 Same glue piece 8 Side plate flap piece 11 Upper lid plate 12 Same front flap piece 13 Same side flap piece 14 Grape plate 14a Grape plate overlapping piece (both sides)
15 Flap piece r, r'of crepe board Crease line a Intersection of crease line

Claims (2)

A rectangular box-shaped box body (10) having an upper surface opening consisting of a front plate (1), a rear plate (3), both side plates (2, 2), and bottom plates (5, 6), and a fold line on the rear plate (3). Consisting of a lid (20) connected via a line (r),
The lid (20) includes an upper plate (11) connected to the upper edge of the rear plate (3) through a fold line (r) and a front flap connected to the front edge of the upper plate (11). A piece (12), side flap pieces (13, 13) connected to both side edges of the front flap piece (12), an upper edge of the both side flap pieces (13) and a side edge of the upper plate (11). And a gusset board (14) connected to each other via a fold line (r) between the gusset board (14) and the side edge of the upper flap (11) and the upper edge of the side flap piece (13). A central fold line (r') that bisects the intersection angle from the intersection (a) of both fold lines (r, r) with
Flap pieces (8) are connected to the upper edges of the both side plates (2, 2) via fold lines (r), and flaps are also connected to the side edges of the gusset plate (14) via the fold lines (r). Pieces (15) are connected,
The gusset board (14) is valley-folded through the central fold line (r'), and both side pieces (14a, 14a) of the central fold line (r') are overlapped and placed along the back surface of the upper plate (11). At the same time, the flap piece (15) of the gusset plate (14) is bent along the fold line (r) and positioned inside the rear plate (3), and the flap pieces (8) of the both side plates (2, 2). A packaging box, characterized in that it is bent over a fold line (r) and is positioned above the flap piece (15) of the gusset board (14).   The front plate (1), the rear plate (3), both side plates (2, 2), the bottom plate (5, 6), the upper plate (11), the front flap piece (12), and the side of the front flap piece (12). The flap pieces (13, 13), the gore board (14), the flap pieces (8) of the side plates (2, 2), and the flap piece (15) of the gore board (14) each have a fold line (r). The packaging box according to claim 1, wherein the packaging box is composed of a sheet of paper blank connected to each other via a sheet.

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