JP3216447U - Packaging box with anti-opening function - Google Patents

Abstract

The present invention provides a packaging box with an opening prevention function in which a locking piece can be firmly engaged with an insertion slot even if there is some work variation during assembly. A box forming piece (12) includes side plates (14, 16, 18, 20) connected in parallel to each other. A lid piece 34 is extended to the end of the first side plate 14, and an insertion piece 38 is extended to the tip of the first side plate 14 via a first crease line 40. A part of the first crease line 40 is provided with an insertion port 42 provided by a cut line, and the middle part of the cut line is formed in the shape of a bulge in the direction of the lid piece 34 to be formed in the insertion port. A protruding portion 42a is formed. At the end of the second side plate 18, a locking piece 56 that can be engaged with the insertion port 42 is extended through a second crease line 58, and protrudes from a part of the second crease line 58. The part 42a includes a slit 60 that can be engaged. An opening break line 62 is provided at the end of the second side plate 18 so that the locking piece 56 and the specific portion 18a can be separated. [Selection] Figure 1

Description

  The present invention relates to a packaging box with an opening prevention function provided with a locking piece for sealing a lid.

  Conventionally, as disclosed in, for example, Patent Document 1, in order to prevent unauthorized opening of a lid piece that closes one end of a cylinder, the lid piece is engaged with a locking piece and sealed. There was an unopened carton. In this unopened carton, a lid piece is extended at the end of the rear plate, which is one side of the cylinder, and an insertion piece to be inserted inside the front plate is extended at the tip of the lid piece. A U-shaped insertion port (insertion hole) is formed at a position closer to the insertion piece. At the end portion of the front plate facing the rear plate, a locking piece (tongue-like hook piece) that is engaged with the insertion port of the lid piece that closes the end portion of the cylinder is extended. The front plate is formed with a pair of cuts (two cut lines) extending in the center direction of the front plate from the base of the locking piece, and an area sandwiched between the pair of cuts from the end of the front plate; A U-shaped opening breaking line (perforation line) is formed so as to surround the peripheral edge portion, and a convex opening portion is provided.

  A pair of cuts are provided to make it easier to pull out and insert the locking piece once into the insertion slot, and the breaking line for opening is used when the opening and the locking piece are properly opened. It is provided to release the lid piece from the front plate.

JP 2012-188135 A

  In order to obtain a sufficient opening prevention effect, it is important that the locking piece is firmly engaged with the insertion port so that the locking piece is not easily pulled out from the insertion port.

  In the case of the unopened carton of Patent Document 1, the engagement strength between the locking piece and the insertion port is the U-shape of the insertion port (insertion hole) and the contour shape of the locking piece (tongue-like hook piece). And is determined by a delicate relationship. However, when the assembly operator inserts the locking piece into the insertion slot, the locking piece and the insertion slot rub against each other or collide with each other. The strength of the may decrease. Accordingly, there has been a demand for improvement so that the engagement strength between the locking piece and the insertion port is sufficiently ensured even if there is some work variation during assembly.

  The present invention has been made in view of the background art described above, and is easy to assemble with a simple structure, and has an opening prevention function that allows the locking piece to securely engage the insertion port even if there is some work variation during assembly. The purpose is to provide a packaging box.

The present invention is composed of a single box-forming piece. The box-forming piece includes a plurality of side plates connected in parallel to each other and a first side that is one of the plurality of side plates. A lid piece extending at an end portion of the face plate in a direction perpendicular to the connecting direction, and an insertion piece extending from the distal end portion of the lid piece and separated from the lid piece by a first crease line And an insertion port provided by a cut line in a part of the first crease line, and a shape in which the middle part of the cut line bulges in the direction of the lid piece is formed in the insertion port Extended to the end of the lid piece side of the second side plate, which is one of the plurality of side plates, and separated from the second side plate by a second crease line And a specific portion of the end portion of the second side plate that is continuous with the locking piece. The locking piece and the opening for the break lines that allow separating provided the specified portion from the second side plate,
In an assembled state, the plurality of side plates form a cylinder, the first and second side plates face each other, the lid piece closes the opening of the cylinder, and the insertion piece Folded at the first crease line and locked to the back side of the second side plate, the locking piece is bent at the second crease line and entered into the insertion slot to engage, It is a packaging box with an opening prevention function which a protrusion part enters into the said slit and engages.

  In the specific portion of the second side surface, the second crease line and a pair of cuts extending continuously from both sides of the base end portion of the locking piece to the center side of the second side plate, A pulling portion surrounded by a fold line for pulling connecting the tip ends of the pair of cuts is provided, the breaking line for opening is provided not to overlap the fold line for pulling, and the locking piece It is preferable that the specific portion including the pulling portion be configured to be separable from the second side plate. Moreover, it is preferable that a part of the opening breaking line is provided with an opening through hole for facilitating placing a finger on a specific part of the second side plate.

  The packaging box with an opening prevention function of the present invention has a simple structure and can be easily assembled in the same procedure as in the prior art. In the assembled state, the locking piece and the insertion port are doubly engaged, so that it is more difficult to pull out the locking piece than before. Therefore, even when there is some work variation during assembly, the strength of engagement between the locking piece and the insertion port is sufficiently ensured, and unauthorized opening such as tampering or inadvertent opening can be surely prevented.

It is the expanded view which looked at the box body formation piece which forms one Embodiment of the packaging box with an opening prevention function of this invention from the back side. It is figure (a), (b), (c) which shows the assembly process of the box formation piece of FIG. It is a perspective view (a) which shows the assembly process of the box formation piece of FIG. 1, (b). It is sectional drawing (a), (b) which shows the assembly process of the box formation piece of FIG. It is sectional drawing (a), (b) which shows the assembly process of the box formation piece of FIG. It is a perspective view which shows the assembly state of the packaging box with an opening prevention function of this embodiment. It is sectional drawing (a) which shows operation which opens the packaging box with an opening prevention function of this embodiment, and a perspective view (b) which shows the opened state.

  Hereinafter, an embodiment of a packaging box with a buffer function of the present invention will be described based on the drawings. As shown in FIG. 6, the packaging box 10 with an unsealing function according to this embodiment is a substantially square box in an assembled state, and is formed by assembling a single box forming piece 12 made of cardboard or the like. .

  FIG. 1 is a view of the box-forming piece 12 as viewed from the back side, and the box-forming piece 12 has four side plates 14, 16, 18, 20 connected in parallel to each other, and each has a crease line. 22, 24, and 26. The side plates 14, 16, 18, and 20 are rectangles having substantially the same size, the lengths in the width direction perpendicular to the connecting direction are short and almost equal to each other, and the lengths in the connecting direction are long and almost equal to each other.

  A glued piece 28 extends from the end of the first side plate 14 in the connecting direction, and is separated from the first side plate 14 by a crease line 30. The glued piece 28 is a part that is glued to the back surface of the end of the side plate 20 because the cylindrical body 32 is formed by the four side plates 14, 16, 18, 20. When the four side plates 14, 16, 18, and 20 become the cylindrical body 32, the upper end in FIG. 1 is the lid side and the lower end is the bottom side. Hereinafter, the side plate 14 is referred to as a first side plate 14, and the side plate 18 is referred to as a second side plate 18.

  A substantially square lid piece 34 extends from the lid side end of the first side plate 14 and is separated from the first side plate 14 by a crease line 36. An insertion piece 38 extends from the tip of the lid piece 34 and is separated from the lid piece 34 by a first crease line 40. An insertion port 42 made of a U-shaped cut line is provided at a position overlapping the central portion of the first crease line 40, and the middle part of the cut line has a shape bulging in the direction of the lid piece 34. By doing so, the protrusion 42 a is provided in the insertion port 42.

  A substantially rectangular bottom piece 44 extends from the bottom end of the first side plate 14 and is separated from the first side plate 14 by a crease line 46. The bottom piece 44 is a portion that becomes a part of a so-called one-touch type bottom surface 92, and the extending length from the crease line 46 is about 3/5 of the length of the side plate 16 in the connecting direction. A crease line 48 extending at an angle of about 45 degrees from the end of the crease line 22 is provided inside the bottom piece 44, and divides the bottom piece 44 into a substantially triangular glued portion 44a and a bottom portion 44b.

  A substantially rectangular side flap 50 extends from the end of the side plate 16 on the lid side and is separated from the side plate 16 by a crease line 52. A trapezoidal bottom piece 54 with a narrow tip is extended at the bottom end of the side plate 16 and is separated from the side plate 16 by a crease line 56. The bottom piece 54 is a portion that becomes a part of a so-called one-touch type bottom surface 92, and the extending length from the crease line 56 is about ½ of the connecting direction length of the first side plate 14.

  A locking piece 56 extends from the center of the end of the second side plate 18 on the lid side and is separated from the second side plate 12 by a second crease line 58. The locking piece 56 protrudes with both sides of the base end portion spreading to a predetermined width, and both corners of the tip end are rounded and chamfered. Further, a long hole-shaped slit 60 is provided so as to overlap the center of the second crease line 58.

  The end portion on the lid side in the second side plate 18 surrounds a specific portion 18a continuous to the locking piece 56, and the locking piece 56 and the specific portion 18a can be separated from the second side plate 18. An opening break line 62 is provided in a U-shape. In the specific portion 18a, a pair of cuts 64 extending continuously from both sides of the base end portion of the locking piece 56 to the center side of the second side plate 18 at positions overlapping with both end portions of the opening breaking line 62. And a folding crease line 66 for linearly connecting the tip ends of the pair of cuts 60 is provided. The inner side surrounded by the second crease line 58, the pair of cuts 64, and the fold line 66 for pulling is provided. It becomes the pulling-up part 68. In addition, an opening through hole 70 is provided at the center of the opening breaking line 62 to make it easier to put a finger on the specific portion 18a.

  A substantially rectangular bottom piece 72 extends from the bottom side end of the second side plate 18 and is separated from the second side plate 18 by a crease line 74. The bottom piece 72 is a portion that becomes a part of the so-called one-touch type bottom surface 92, and the extending length from the crease line 74 is about 3/5 of the connecting direction length of the side plate 16. A crease line 76 extending at an angle of about 45 degrees from the end of the crease line 26 is provided inside the bottom piece 72, and divides the bottom piece 72 into a substantially triangular glued portion 72a and a bottom surface portion 72b.

  A substantially rectangular side flap 78 extends from the end of the side plate 20 on the lid side and is separated from the side plate 20 by a crease line 80. A trapezoidal bottom piece 82 with a narrow tip is extended at the bottom end of the side plate 20 and is separated from the side plate 20 by a crease line 84. The bottom piece 82 is a portion that becomes a part of a so-called one-touch type bottom surface 92, and the extending length from the crease line 84 is about ½ of the connecting direction length of the first side plate 14.

  Next, an example of a method for assembling the packaging box 10 with the unsealing prevention function will be described. 1 shows the box-forming piece 12 as viewed from the back side. Hereinafter, the folding method in which the front surface of the box-forming piece 12 is convex is folded forward, and the folding method in which the back surface is convex is reversed. Will be described.

  First, as shown in FIG. 2A, the crease line 46 is normally folded and the bottom piece 44 is superimposed on the back surface of the first side plate 14, and the crease line 56 is normally folded and the bottom piece 54 is placed on the back surface of the side plate 16. Then, the crease line 74 is folded forward and the bottom piece 72 is overlaid on the back side of the second side plate 18, and the crease line 84 is folded forward and the bottom piece 82 is put on the back side of the side plate 20. Further, the crease line 48 is reversely folded and the glued portion 44a is overlaid on the bottom surface portion 44b, the crease line 76 is reversely folded and the glued portion 72a is overlaid on the bottom surface portion 72b, and the glue 86 is applied to the back surface of the glued portion 44a. Apply. Then, as shown in FIG. 2 (b), the crease line 22 is normally folded and the bottom piece 44 is overlapped with the bottom piece 54, and the back surface of the glued portion 44 a is glued to the surface of the bottom piece 54.

  Thereafter, glue 88 is applied to the back surface of the glued portion 72a, glue 90 is applied to the surface of the glued piece 28, and the crease 26 is forward-folded as shown in FIG. 72, the back surface of the glued portion 72a is glued to the surface of the bottom piece 82, and the surface of the glued piece 28 is glued to the back surface of the side plate 20. The box-forming piece 12 is shipped in this folded state.

  Next, it is assembled three-dimensionally in a factory or the like for packaging products. First, the crease lines 22, 24, 26, and 30 are each normally folded at 90 degrees. By this operation, the four side plates 14, 16, 18, 20 become a rectangular cylinder 32, and the first side plate 14 and the second side plate 18 face each other. Further, since the glued portion 44a and the bottom piece 54 are glued, and the glued portion 72a and the bottom piece 82 are glued, the folded folding lines 48 and 76 are automatically opened and folded by this operation. The ruled lines 46, 56, 74, and 84 are automatically normally folded at 90 degrees, and the four bottom pieces 44, 54, 72, and 82 are collapsed and overlapped to form a one-touch type bottom surface 92. Thus, the state shown in FIG.

  Thereafter, a product or the like is put through the opening on the lid side, the side flaps 50 and 78 are normally folded at 90 degrees along the crease lines 52 and 80, and the lid piece 34 is folded at 90 degrees along the crease line 36. Then, when the insertion piece 38 is normally folded at 90 degrees along the crease line 40 and the insertion piece 38 is inserted into the second side plate 18 to close the opening, the state shown in FIG. In this state, the locking piece 56 protrudes upward beyond the lid piece 34, and the second crease line 58 and the slit 60 are inserted into the insertion port of the insertion piece 38 as shown in FIG. 42 in the vicinity. Moreover, the protrusion part 42a of the insertion port 42 stands up, and protrudes so that the center part of the insertion port 40 may be plugged up.

  Next, an operation of sealing the lid piece 34 by inserting the locking piece 56 into the insertion port 42 is performed. First, as shown in FIG. 4B, the folding line 66 for pulling is reversely folded, the pulling part 68 sandwiched between the pair of cuts 64 is tilted outward, and the second folding line 58 is forward-folded. Thus, the leading end of the locking piece 56 is guided in the direction of the insertion port 42. And as shown to Fig.5 (a), when the latching piece 56 is inserted in the insertion port 42 and it inserts to the back, it will be in the state of FIG.5 (b).

  In the state of FIG. 5B, the widened portions on both sides of the base end portion of the locking piece 56 engage with both end portions of the insertion port 42, and the protruding portion 42 a of the insertion port 42 has the slit 60. Enter and engage. That is, the locking piece 56 and the insertion port 42 are doubly engaged, and it is difficult to pull out the locking piece 56 as compared to the conventional case. In addition, if the locking piece 56 is forcibly pulled out in order to open it illegally, the engaged part and its surroundings are deformed or damaged, leaving traces, and a reliable opening preventing effect can be obtained. Thus, the packaging operation is completed, and the assembled state shown in FIG.

  When the packaging box 10 with the anti-opening function is properly opened, a finger is put on the specific part 18a from the opening through hole 70 of the second side plate 18, and the specific part 18a is pulled up as shown in FIG. 7 (a). The breaking line 62 for opening is broken. As a result, the locking piece 56 and the specific portion 18a (including the pulling portion 68) are separated from the second side plate 18, and the sealing of the lid piece 34 is released. And if the lid piece 34 and the insertion piece 38 are pulled up and the side flaps 50 and 78 are pulled up, as shown in FIG. 7 (b), the lid side of the box is opened, and the product etc. inside can be taken out. The locking piece 56 and the specific portion 18a (including the pull-up portion 68) separated from the second side plate 18 are held while being engaged with the insertion port 42. At the time of opening, the specific portion 18a may be pressed to break the opening break line 62, and the opening break line 62 may be opened. The opening break line 62 may be formed in a sewing machine line shape.

  As described above, the packaging box 10 with the unsealing prevention function has a simple structure and can be easily assembled in the same procedure as the conventional one. Then, in the assembled state, the locking piece 56 and the insertion port 42 are doubly engaged, so that it is difficult to pull out the locking piece 56 than in the prior art. Therefore, even if there is some work variation at the time of assembly, the engagement strength between the locking piece 56 and the insertion port 42 is sufficiently secured, and unauthorized opening such as tampering can be reliably prevented.

  In addition, the packaging box with an opening prevention function of this invention is not limited to the said embodiment. For example, the shape of both ends of the insertion port formed by the cut line and the contour shape of the locking piece can be freely changed within a range where they can be engaged with each other. Similarly, the shape of the protrusion of the insertion port and the shape of the slit of the locking piece can be freely changed within a range where they can be engaged with each other.

  The pair of cuts, pulling crease lines, and opening through-holes in the second side plate are configurations for facilitating the operation of inserting the locking pieces into the insertion openings, and the individual shapes can be changed as appropriate. it can. In addition, these configurations may be selectively omitted as long as the operation of inserting the locking piece into the insertion port is not hindered.

  In addition, the number, size, and shape of the side plates forming the cylindrical body, the structure of the glued pieces and the bottom surface, and the like can be freely changed. Further, the material and thickness of the box forming piece are not particularly limited.

DESCRIPTION OF SYMBOLS 10 Packaging box with opening prevention function 12 Box-forming piece 14 First side plate 16, 20 Side plate 18 Second side plate 18a Specific part 32 Cylindrical body 34 Lid piece 38 Insert piece 40 First crease line 42 Difference Slot 42a Protruding portion 56 Locking piece 58 Second crease line 60 Slit 62 Breaking line 64 for opening 66 Folding crease line 68 Pulling part 70 Opening through hole

Claims (3)

The box-forming piece includes a plurality of side plates connected in parallel to each other, and a first side plate that is one of the plurality of side plates, A lid piece extending at an end portion in a direction perpendicular to the connecting direction, a plug piece extending at a tip portion of the lid piece and separated from the lid piece by a first crease line, and the first An insertion port provided by a cut line in a part of one crease line, and a protrusion formed in the insertion port by forming a middle part of the cut line in a shape bulging in the direction of the lid piece And a second side plate that is one of the plurality of side plates, extending to the end on the lid piece side, and separated from the second side plate by a second crease line Enclosing a specific portion of the piece, a slit provided in a part of the second crease line, and an end of the second side plate that is continuous with the locking piece; And the opening for the break lines that allow separating provided the specified portion from the second side plate,
In an assembled state, the plurality of side plates form a cylinder, the first and second side plates face each other, the lid piece closes the opening of the cylinder, and the insertion piece Folded at the first crease line and locked to the back side of the second side plate, the locking piece is bent at the second crease line and entered into the insertion slot to engage, A packaging box with an anti-opening function, wherein a protruding portion enters and engages with the slit. In the specific portion of the second side surface, the second crease line and a pair of cuts extending continuously from both sides of the base end portion of the locking piece to the center side of the second side plate, A pulling portion surrounded by a fold line for pulling connecting the tip portions of the pair of cuts is provided;
The said breaking line for opening is provided so that it may not overlap with the said crease line for raising, The said specific part containing the said latching piece and the said raising part is separable from a 2nd side plate. Packaging box with anti-opening function.   The packaging box with an opening prevention function according to claim 1 or 2, wherein a part of the breaking line for opening is provided with an opening through hole for placing a finger on a specific part of the second side plate.

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