JP3165279U - Packaging box - Google Patents

Abstract

The present invention provides a packaging box that can be freely opened and closed on the top and is suitable for storing and transporting fruits and vegetables. A bottom surface side of a rectangular box side wall comprising a pair of long side plates and a pair of short side plates having a top surface closing flap and a bottom surface closing flap is sealed with a bottom surface closing flap, and the top surface side has both lengths. Cover the entire surface with the inner flaps 5, 7 connected to the side plate, fold the outer flap connected to the short side plate 2 on the upper surface of the inner flap, and fold the line between the long side plate in one inner flap 5. The insertion pieces 10 and 10 'at both ends of the outer flaps are detachably fitted into the insertion slits 9 and 9' arranged opposite to each other at two locations along the insertion slit, and are arranged adjacent to the insertion piece. It closes in the state which suppressed the upper surface of the inner flaps 5 and 7 with the pressing pieces 12 and 12 '. [Selection] Figure 5

Description

  The present invention relates to a packaging box that is particularly suitable for storing and transporting mainly fruits and vegetables such as vegetables and fruits, and relates to a packaging box that is less likely to damage the contents when the top surface is opened and closed.

  Conventionally, corrugated cardboard boxes of 0201 type (formerly A-1 type) of JIS-Z1507, which have been produced in a factory and delivered in an assembled state, are often used for packaging boxes that are boxed and shipped. This 0201 type box has a rectangular parallelepiped shape in which rectangular four-side plates are connected in one direction, and the bottom and top surfaces of the box are sealed above and below the four-side plates. Box.

  However, since the box sealing work requires the preparation of an adhesive tape, a sealing metal fitting and its driving machine (stapler), the cost of the auxiliary material for sealing is required. When handling a large amount of relatively heavy contents such as fruits and vegetables, it is common to use a stapler rather than an adhesive tape to seal and seal, but the contents in the box are damaged by the sealing bracket. There is a risk, and the metal fittings after use are incombustible and cannot be incinerated with cardboard, so it is necessary to separate them.

Corrugated cardboard boxes containing fruits and vegetables are required to be safe and easy to work at the time of opening and dismantling after use, and the generation of trash from secondary materials for sealing is avoided at mass retailers. . Furthermore, it is necessary to pay attention to the handling of the used box because it may be injured by the sealing metal fitting during the sorting work when reusing the used box as waste paper.
In addition, when sealing with secondary materials, use for applications where the sealed box must be opened and re-sealed after checking the contents is not only inferior in workability but also with secondary materials. It was practically difficult because the box was damaged by the adhesive tape and sealing metal fittings.

In order to avoid the above problems, various types of packaging boxes have been proposed as packaging boxes that do not require auxiliary materials such as sealing metal fittings and adhesive tape for sealing the top surface (Patent Documents 1 to 3). Such a packaging box is easy to open and reclose the top surface, especially when it is necessary to check the contents of the contents, such as fruits and vegetables, at the wholesale market. Is preferably used.
There are roughly two types of such top surface closing structures. That is, as shown in Patent Document 1, an inner flap is connected to the upper side of one opposing side wall of the cylindrical four side walls, and an outer flap is connected to the upper side of the other opposing side wall to form an outer flap. The insertion locking structure formed by closing the top surface by fitting the inserted piece into the insertion groove formed in the inner flap, and the inner flap of the top surface as described in Patent Document 2 This is a pulling-up locking structure in which the top surface is closed when the locking structure provided between the inner flap and the outer flap is locked.

The insertion lock structure has the advantage that it can be closed, opened, and reclosed with less force compared to the pull-up lock structure, but it will damage the contents at the edge of the flap when the insertion piece is fitted inside the box There was a drawback.
In addition, the lifting lock structure does not push down the flap inside the box, so there is no risk of damaging the contents when closed, and the top surface can be locked by one operation of lifting the flap. Although it is superior to the insertion locking structure, there is a drawback that the locking by pulling requires a larger force than the locking by insertion.
As described above, since these locking structures have advantages and disadvantages, they are properly used depending on the situation. In addition, various improved structures have been proposed for the purpose of alleviating each drawback. For example, Patent Document 3 and the like have been proposed in order to prevent or reduce damage to the contents due to the insertion locking structure.

Japanese Patent Laid-Open No. 8-143025 JP 2004-059045 A JP 2005-343542 A

  The present invention is a structure that can more reliably prevent or reduce damage to the contents when the top surface is closed by the above-described insertion locking structure, and is mainly used for storing and transporting mainly fruits and vegetables such as vegetables and fruits. An object is to provide a suitable packaging box.

In order to solve the above problems, the present invention has the following configuration.
(1) The four side plates forming the rectangular box side wall are connected in series in the order of the long side plate 1, the short side plate 2, the long side plate 3, and the short side plate 4 to each side plate through the fold line. A packaging box formed from a single paper blank sheet in which a top surface closing flap and a bottom surface closing flap for closing the surface so as to be freely opened and closed are provided,
The top surface closing flaps of the long side plates 1 and 3 are formed with inner flaps 5 and 7 that cover the entire top surface in a state in which the tip portions of the long side plates 1 and 3 are in contact with each other. Two insertion slits (9, 9 ') formed by cutting a symmetrical position along the fold line between the side plate 1 into a U-shape are disposed opposite to each other,
The flaps for closing the top surface of the short side plates 2 and 4 are insertion pieces made of U-shaped projecting tip portions that are inserted and fitted into both of the two insertion slits opposed to the inner flap 5 ( 10 and 10 ') and the folding line for hinges (11 parallel to the folding line between the short side plate and the holding piece (12, 12') composed of a curved protruding tip that holds down the upper surfaces of the inner flaps 5 and 7. , 11 ') and the outer flaps 6 and 8 are formed.

(2) A finger hook portion (13, 13 ′) comprising a substantially semi-circular cutout is formed at the center of the tip edge of the curved protruding tip portion forming the insertion piece (12, 12 ′). The packaging box according to item (1), wherein

(3) The state in which the two front end portions of the inner flaps 5 and 7 are in contact with each other is the state in which one front end portion comes into contact with the other front end portion, or one front end portion overlaps the other front end portion vertically. The packaging box according to item (1) or (2), wherein the packaging box is in a contact state.

(4) The side edges of the long side plate 1 and the short side plate 4 adjacent to each other in the rectangular box side wall are joined by a glue margin (18) formed on any one side edge. The packaging box according to any one of items (1) to (3).

  By the present invention, it is particularly suitable for storing and transporting mainly fruits and vegetables such as vegetables and fruits by further preventing or reducing damage to the contents when the top surface is closed by the conventional plug fitting structure as described above. New packaging boxes can be provided.

It is a figure which shows the blank sheet which expand | deployed the packaging box of this invention. It is a figure which shows the state in the middle of assembling the packaging box of this invention from the blank sheet | seat of FIG. It is a figure which shows the state in the middle of an assembly which advanced from the state of FIG. 2 and closed the top | upper surface with the inner flap. It is a figure which shows the state in the middle of further folding from FIG. 3 and folding an outer flap on an inner flap and closing a top | upper surface. It is a figure which shows the packaging box of this invention which completed the top surface closure through FIG.

The present invention will be described more specifically with reference to the drawings.
The packaging box of the present invention is made of a paper sheet such as cardboard or paperboard that can be easily disposed of and recycled. In particular, a corrugated cardboard sheet excellent in strength, buffering property and heat insulating property is preferably used.

First, a description will be given based on the developed view of FIG.
The packaging box comprising a rectangular box according to the present invention has a long side plate 1, a short side plate 2, a long side plate 3, and a short side plate 4 connected in this order via a broken line to form a side wall portion. 3) The inner flaps (5, 7) are connected as the top surface closing flaps via the folding line at the upper part, and the bottom closing flaps (14, 16) are connected at the lower part via the folding line, An outer flap (6, 8) is connected to the upper part of the pair of short side plates (2, 4) via a folding line as a top closing flap, and the bottom closing flap (15, 17) is connected to the lower part via a folding line. ).

  In one inner flap 5 of the inner flaps, a pair of insertion slits defined by a substantially U-shaped cutting line and a fold line (19, 19 ') connecting both ends of the U-shaped cutting line. (9, 9 ') is formed opposite to the symmetrical position in the inner flap along the fold line with the long side plate 1, and the pair of outer flaps (6, 8) has the U-shape. An insertion piece (10, 10 ') consisting of a U-shaped projecting tip portion that can be inserted and fitted into two insertion slits (9, 9') formed by cutting into a shape, and a tip edge Is formed as a projecting portion curved outward, and a restraining piece (12, 12 ') composed of a curved projecting tip for restraining the upper surface of the inner flap (5, 7) is formed. By providing a ruled line that is parallel to the fold line between the two short side plates and can be folded into a mountain fold when viewed from the outside of the box. Hinge fold line (11, 11 ') are formed.

  In addition, bottom closing flaps (14 to 17) are connected to lower portions of the long side plates (1, 3) and the short side plates (2, 4) via folding lines. The shape of the bottom closing flap shown in FIG. 1 is a general 0201 type bottom flap, which is sealed with a stapler or an adhesive tape. In the present invention, the shape of the bottom closing flap can be arbitrarily selected according to the situation, but the bottom sealing structure that does not require secondary materials for sealing, such as the general semi-automatic lock bottom type and automatic lock bottom type This is particularly suitable because the packaging box is a non-staple type packaging box that does not require secondary materials for sealing.

  When assembling a packaging box of the present invention from one blank sheet shown in FIG. 1, first, four side plates (long side plate 1, short side plate 2, long side plate 3, short side plate) are connected. The side plate 4) is sequentially bent and joined to the side edges of the long side plate 1 and the short side plate 4 by the glue margin 18 connected to the side edge of the long side plate 1 to form a rectangular box side wall. Thus, the rectangular cylinder formed with the side wall portion can be stored in a folded state until it is assembled and used as a packaging box. When assembling the packaging box, the folded side plate is caused to become a rectangular cylinder, and the bottom closing flaps (15, 17) first connected to the short side plates (2, 3) are placed on the bottom side. Fold down, fold the bottom closing flaps (14, 16) connected to the long side plates (1, 3) on top of each other, join the front end butting parts of both flaps with stapler or adhesive tape, and lock the bottom closing part, A rectangular box with the top surface released is formed (FIG. 2).

  When closing the top surface with the contents stored in the packaging box with the bottom part locked, first fold the inner flaps (5, 7) of the long side plates (1, 3) inward, Cover the entire top surface so that it is in a butted state or overlapped vertically at the center of the top surface (FIG. 3), and the outer flaps (6, 8) of the short side plates (2, 4) are folded on it, While folding the folding line for hinges provided on both outer flaps into a mountain fold state, the tip of the U-shaped insertion piece (10, 10 ') is slightly retracted to correspond to the inner flap (5). Align the insertion slot (9 or 9 ') with the insertion slot (Fig. 4), and then push the hinge folding line part bent outwardly into a flat state by inserting it into the insertion piece ( 10, 10 ') is advanced, inserted into the slot, and the top surface is closed The state is fixed (FIG. 5).

  When opening the packaging box of the present invention with the top surface closed as described above, the leading edge of the holding piece (12, 12 ') formed of the curved protruding tip of the outer flap (6, 8) is used. Hook your finger on the formed finger hook (13, 13 ') and apply force in the direction in which the folding line for hinges bends into a mountain fold, pulling out the entire insertion piece from the insertion slit and removing the outer and inner flaps. At the same time as releasing the closed and fixed state, the inner flap (5, 7) can be easily opened by releasing the holding state against the upper surface of the inner flap (5, 7) by both outer flaps. . Moreover, the top surface can be closed again easily by repeating the top surface closing procedure.

DESCRIPTION OF SYMBOLS 1,3: Long side board 2, 4: Short side board 5, 7: Inner flap 6, 8: Outer flap 9, 9 ': Insert slit 10, 10': Insert piece 11, 11 ': Folding line 12 for hinges, 12 ': Holding pieces 13, 13': Finger hooks 14-17: Flap for closing the bottom surface 18: Adhesive margins 19, 19 ': Fold line

Claims (3)

The four side plates that form the rectangular box side wall are connected in series in the order of the long side plate 1, the short side plate 2, the long side plate 3, and the short side plate 4, and each side plate opens and closes the top surface via the fold line. It is a packaging box formed from a single paper blank sheet in which a top surface closing flap and a bottom surface closing flap that are freely closed are provided continuously,
The top surface closing flaps of the long side plates 1 and 3 are formed with inner flaps 5 and 7 that cover the entire top surface in a state in which the tip portions of the long side plates 1 and 3 are in contact with each other. Two insertion slits (9, 9 ') formed by cutting a symmetrical position along the fold line between the side plate 1 into a U-shape are disposed opposite to each other,
The flaps for closing the top surface of the short side plates 2 and 4 are insertion pieces made of U-shaped projecting tip portions that are inserted and fitted into both of the two insertion slits opposed to the inner flap 5 ( 10 and 10 ') and the folding line for hinges (11 parallel to the folding line between the short side plate and the holding piece (12, 12') composed of a curved protruding tip that holds down the upper surfaces of the inner flaps 5 and 7. , 11 ') and the outer flaps 6 and 8 are formed.   A finger hook portion (13, 13 ′) formed of a substantially semicircular cutout is formed at the center of the tip edge of the curved protruding tip portion forming the insertion piece (12, 12 ′). The packaging box according to claim 1.   The packaging box according to claim 1 or 2, wherein a state in which the two front end portions of the inner flaps (5) and (7) are in contact is a state in which one front end portion is in contact with the other front end portion so as to overlap each other.

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