JP3177114U - Packaging box - Google Patents

Abstract

Provided is a packaging box in which an upper lid piece and a side surface are assembled without gaps with a simple structure, and securely covers and wraps the contents.
Side surfaces are connected in parallel to each other, and an upper lid piece is connected to a side surface facing the side surface via a crease line to close an opening. An insertion piece provided at the tip of the upper lid piece, a pair of side surfaces 16 adjacent to the side surface provided with the upper lid piece, and the like are provided with upper flaps connected respectively via curved folding lines. The curved fold line includes a side curved fold line 42a that is curved to protrude toward the side 16 and the like, and an upper flap curved fold line that is curved so as to be positioned and project on the upper flap side. In the assembled state of the box-forming pieces, the upper flap is bent along the shape of the flap bending line 42a, and the center portion is gently swollen so as to protrude upward. The upper lid piece is stacked on the surface of the upper flap and is closed without a gap.
[Selection] Figure 1

Description

  The present invention relates to a packaging box that closes an upper lid piece and closes an opening.

  Conventionally, a packaging box made of a box-shaped piece integrally punched from one blank sheet has a side surface connected in parallel to each other and an upper lid piece that is continuous from the side surface and closes the opening on the top surface of the box. And an insertion piece that is inserted and closed inside the side surface that is connected to and faces the upper lid piece.

  For example, in the packaging box disclosed in Patent Document 1, four side surfaces are assembled into a cylindrical shape, and the opening at one end is closed at the bottom formed by combining one part, and the other is closed. The opening is closed by a single cover plate. The lid plate portion is attached to the opening edge of one side surface via a fold line, and a bent piece separated by the fold line is provided at the tip of the lid plate portion. In this packaging box, the folded piece is bent at approximately 90 ° along the folding line and inserted into the opposite side surfaces to lock the lid plate portion, and the opening portion is closed.

JP 2011-111204 A

  In the case of the above-mentioned background art, the packaging box accommodates and protects the contents, and is made of a blank sheet such as paper made of paper that is easy to process, so in a state where the box forming piece is folded and assembled, While the lid plate portion is elastic and the central portion is curved upward, the opening edge of the packaging box is formed in a straight line, and there is a problem that a gap is formed between the lid plate portion and the curved lid plate portion. For this reason, foreign substances may be mixed in from the gap, and the contents cannot be reliably covered and packaged.

  The present invention has been made in view of the above-described problems of the background art, and has an object to provide a packaging box in which an upper lid piece and a side surface are assembled without gaps with a simple structure, and securely covers and covers the contents. And

  The present invention comprises a box-forming piece integrally punched from a single blank sheet, and the box-forming piece is glued to a side surface connected in parallel to each other and the side surfaces into a cylindrical body. An adhesive piece to be assembled, an upper lid piece that is connected to one of the side surfaces via a crease line and closes the opening of the cylindrical body on the side surface, and a pair of side surfaces adjacent to the side surface on which the upper lid piece is provided An upper flap provided in an articulated manner is provided, and the upper flap is connected to the side surface via an upper flap curved fold line that is curved so as to swell toward the upper flap, and both end portions of the upper flap curved fold line. Is located at the corner of the opening edge of the side surface, and the upper flap is formed by an arc that can be bent at a right angle to the side surface, and in the assembled state of the box-forming piece, the upper flap is Follow the shape of the upper flap curve line Bent in the central portion Te is gradually bulges to form a projection upward, the upper cover piece which is superimposed on the surface of the upper flap, a contact without gaps closed is the packing box on said flap bulging upwards.

  A side curved fold line that is curved so as to swell toward the side surface is formed on the side surface provided with the upper flap.

  Further, a convex lens-shaped inclined surface portion is formed between the side curved fold line and the upper flap curved fold line, and a folded piece having the same shape as the inclined surface portion is formed on the pair of side edges of the upper lid piece. In the assembled state of the packaging box, the inclined surface portion intersects the side surface and the upper flap, and the folded piece of the upper lid piece is folded at the folded piece folding line. It is overlaid on the inclined surface.

  Further, a convex lens-shaped inclined surface portion is formed between the side curved fold line and the upper flap curved fold line, and a pair of side edges of the upper lid piece are cut into the same shape as the upper flap curved fold line, In the assembled state of the packaging box, the pair of side edges of the upper lid piece coincides with the side curved line.

  The packaging box of the present invention has a simple structure and the upper lid piece and the side surface are assembled without gaps, so that the contents can be reliably covered and packaged. Thereby, mixing of a foreign material can be prevented and the contents can be kept clean.

It is a perspective view of the packaging box of 1st embodiment of this invention. It is an expanded view of the packaging box of 1st embodiment of this invention. It is a side view of the state which opened the upper cover piece of the packaging box of 1st embodiment of this invention. It is a partial expanded longitudinal cross-sectional view of the packaging box of 1st embodiment of this invention. It is a perspective view of the packaging box of 2nd embodiment of this invention. It is an expanded view of the packaging box of 3rd embodiment of this invention. It is a side view of the packaging box of 3rd embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of the present invention. A packaging box 10 according to this embodiment is formed by assembling a box-forming piece 12 formed by punching a blank sheet such as paper. Is provided.

  FIG. 2 is a developed view of the box-forming piece 12 as viewed from the surface. The box-forming piece 12 has side surfaces 14, 16, 18, and 20 connected in parallel to each other. The side surfaces 14, 16, 18, and 20 have substantially the same shape as each other, and have a rectangular shape in which the connecting width direction is slightly longer than the length in the connecting direction. On the side edge of the side surface 14, there is provided a glued piece 22 that is glued to the back surface of the side surface 20 in the assembled state of the packaging box 10. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are divided by crease lines 24, 26, 28, and 30, respectively.

  In the side surface 14, one end portion 14 a in a direction perpendicular to the connecting direction of the side surfaces is an opening edge portion that opens upward in the assembled state of the packaging box 10. A first bottom cover piece 32 that forms the bottom is provided on the end opposite to the end 14 a by being separated by a crease line 34. The first bottom cover piece 32 is formed in a triangular shape with the crease line 34 as one side, and a substantially triangular bottom glued piece 36 is provided on a side continuous with the crease line 26 by being separated by a crease line 38. Yes.

  A trapezoidal upper flap 40 is provided at the end of the side surface 16 adjacent to the end 14 a of the side surface 14, separated by a curved folding line 42. The curved fold line 42 is provided by two curved arcs that swell away from each other. The curved side fold line 42a is located on the side surface 16 side and bulges so as to protrude toward the side surface 16 side. An upper flap fold line 42b is provided which bulges so as to protrude toward the flap 40 side. Both end portions of the side curved fold line 42a and the upper flap curved fold line 42b are positioned on the extended lines of the end portion 14a of the side surface 14 and at the corners intersecting with the crease lines 26 and 28, respectively, and the radius of the arc is the upper flap. 40 is a loose one that can be bent at about a right angle to side 16. A portion of the curved folding line 42 between the side curved folding line 42a and the upper flap curved folding line 42b forms a convex lens-shaped inclined surface portion 43. A trapezoidal bottom flap 44 that forms a bottom portion is provided on an end portion of the side surface 16 opposite to the curved folding line 42 and separated by a crease line 46.

  A rectangular upper lid piece 48 is provided at the end of the side surface 18 adjacent to the curved fold line 42 of the side surface 16 and separated by a crease line 50. On the pair of side edges of the upper lid piece 48 positioned at right angles to the crease line 50, a convex lens-shaped folded piece 52 having the same shape as the inclined surface portion 43 is provided by being separated by a folded piece folding line 54. The folded piece folding line 54 coincides with the upper flap curved folding lines 42b and 70b of the upper flaps 40 and 68 in the assembled state of the packaging box 10, and the folded piece 52 is folded over the folded piece folding line 54 with the upper flap curved folding line 42b, If it folds along 70b, it will overlap with inclined surface parts 43 and 72. FIG. At this time, the side edge portion of the folded piece 52 coincides with the upper flap curved folding lines 42b and 70b. At the end of the upper lid piece 48 on the opposite side of the crease line 50, an insertion piece 56 is further provided by being separated by a crease line 58.

  A second bottom cover piece 60 forming a bottom portion is provided on an end portion of the side surface 18 opposite to the crease line 50 and separated by a crease line 62. The second bottom cover piece 60 is formed in a triangular shape having a crease line 62 as one side, and a substantially triangular bottom-glued piece 64 is provided on a side continuous with the crease line 30 and separated by a crease line 66. Yes.

  A trapezoidal upper flap 68 is provided at the end of the side surface 20 adjacent to the crease line 50 on the side surface 18 and separated by a curved fold line 70. The curved fold line 70 is provided by two curved arcs that swell away from each other. The curved fold line 70a is located on the side surface 20 side and bulges so as to protrude toward the side surface 20 side. An upper flap fold line 70b that swells so as to protrude toward the flap 68 is provided. Both end portions of the side curved fold line 70a and the upper flap curved fold line 70b are located on the extended lines of the crease line 50 on the side face 18 and are located at corners intersecting with the side edges of the crease line 30 and the side face 20, respectively. The radius is such that the upper flap 68 can be bent at a right angle with respect to the side surface 20. A portion of the curved fold line 70 between the side curved fold line 70a and the upper flap curved fold line 70b forms an inclined surface portion 72 having a convex lens shape. A trapezoidal bottom flap 74 forming a bottom portion is provided on an end portion of the side surface 20 opposite to the curved folding line 70, separated by a crease line 76.

  Next, an example of an assembly method of the packaging box 10 of this embodiment will be described. Here, FIG. 2 shows the surface of the box-forming piece 12 of the packaging box 10. The folding method in which the surface of the box-forming piece 12 is convex and the back surface is convex. Is called reverse folding.

  First, the crease lines 34, 46, 62, and 76 are forward-folded, the crease lines 38 and 66 are reverse-folded, and paste 78 and 80 are applied to the back surfaces of the bottom glued pieces 36 and 64. Then, paste 82 is applied to the surface of the glued piece 22, the crease line 26 is normally folded, and the crease line 30 is normally folded. Thereby, the surface of the glued piece 22 is glued to the back surface of the side surface 20 by glue 82, the back surface of the bottom glued piece 36 is glued to the surface of the bottom flap 44, and the bottom surface of the bottom glued piece 64 is glued to the glue 80. It is glued to the surface of the bottom flap 74. Thereby, it will be in a folded state and will be shipped in this state.

  Next, in a factory or the like for storing and packaging the contents, the crease lines 24, 26, 28, and 30 are each normally folded at 90 ° to form a rectangular box. At this time, since the bottom glued piece 36 of the first bottom cover piece 32 is glued to the bottom flap 44 and the bottom glued piece 64 of the second bottom lid piece 60 is glued to the bottom flap 74, the folded piece folded in half. The ruled lines 34, 46, 62 and 76 are automatically caused to open at approximately 90 ° to form the bottom. The 1st bottom cover piece 32 and the 2nd bottom cover piece 60 are mutually locked, and the shape of the bottom part of a box is maintained.

  Next, the product is put inside the box composed of the assembled side surfaces 14, 16, 18, 20 and the bottom portions of the first and second bottom cover pieces 32, 60 and the bottom flaps 44, 74, and the curved folding line 42 The flap 40 is folded forward at 90 °. At this time, as shown in FIG. 3, the side curved fold line 42a and the upper flap curved fold line 42b of the curved fold line 42 are bent at an obtuse angle, and the upper flap 40 is bent along the shape of the upper flap curved fold line 42b. The center part gently bulges upward and convex. The inclined surface portion 43 between the side curved fold line 42 a and the upper flap curved fold line 42 b is located so as to intersect the side surface 16 and the upper flap 40. Similarly, the upper flap 68 is normally folded at 90 ° along the curved folding line 70. At this time, the side curved fold line 70a and the upper flap curved fold line 70b of the curved fold line 70 are bent at an obtuse angle, and the upper flap 68 is bent along the shape of the upper flap curved fold line 70b so that the central portion is gently upward. It bulges to become convex. The inclined surface portion 72 is located so as to intersect the side surface 20 and the upper flap 68. At this time, as shown in FIG. 3, the pair of folded pieces 52 are on the same plane as the upper lid piece 48.

  Next, the upper lid piece 48 is normally folded at 90 ° with the crease line 50, the insertion piece 56 is normally folded with the crease line 58, the insertion piece 56 is inserted into the back side of the side surface 14 and locked, and the upper surface is It is formed. The back surface of the upper lid piece 48 abuts on the upper flaps 40 and 68 that bulge upward and is closed without a gap. Further, the pair of folded pieces 52 of the upper lid piece 48 are folded at the folded piece folding line 54, and the folded pieces 52 are overlapped on the outer sides of the inclined surface portions 43 and 72 as shown in FIG.

  According to the packaging box 10 of this embodiment, it is possible to assemble the upper lid piece 48 and the side surfaces 16 and 20 without a gap with a simple structure. The back surface of the upper lid piece 48 abuts against the upper flaps 40 and 68 that bulge upward and is closed without a gap. Further, the pair of folded pieces 52 of the upper lid piece 48 are folded along the folded piece bending fold line 54, and the folded piece 52 is shown in FIG. As shown in Fig. 2, the outer surfaces of the inclined surface portions 43 and 72 are overlapped and securely closed. As a result, the product as the contents can be packaged in a surely covered state, foreign matter can be prevented from entering, and the product can be kept clean. Moreover, since there is no gap, the appearance is beautiful, and the convex lens-shaped folded piece 52 is provided, so that the design impression can be strengthened.

  Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the packaging box 84 of this embodiment, a rectangular upper lid piece 86 is provided at the end of the side surface 18 with a crease line 88. A pair of side edge portions 86 a of the upper lid piece 86 positioned at right angles to the crease line 88 are cut into an arc shape that swells inside the upper lid piece 86, and the upper flap curve fold line of the upper flap 40. 42b and the upper flap curve folding line 70b of the upper flap 68 are formed in substantially the same shape. Therefore, the side edge portion 86a coincides with the upper flap curved folding lines 42b and 70b of the upper flaps 40 and 68 in the assembled state of the packaging box 84. At the end of the upper lid piece 86 opposite to the crease line 88, an insertion piece is further provided by being divided by the crease line.

  The packaging box 84 of this embodiment is an assembly method similar to that of the first embodiment, and has the same effects. Since the side edge portion 86a of the upper lid piece 86 coincides with the upper flap curved folding lines 42b and 70b, the design is compact and neat.

  Next, a third embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the packaging box 90 of this embodiment, a rectangular upper lid piece 92 is provided at the end portion of the side surface 14 by being divided by a crease line 94, and a rectangular upper inner lid piece 96 is creased at the end portion of the side surface 18. It is divided by 98 and provided. On the side surfaces 16 and 20, only the upper flap bending fold lines 42 b and 72 b are formed at the boundary with the upper flaps 40 and 68.

  The upper lid piece 92 is provided with a zipper wire 100, and a re-sealing insertion portion 102 is provided at a central portion in the vicinity of the crease line 94. An insertion piece 104 protrudes from the upper inner lid piece 96 facing the upper lid piece 92 at a position corresponding to the insertion portion 102, and can be opened by the upper inner lid piece 96 after opening.

  Also in the packaging box 90 of this embodiment, similarly to the first embodiment, the upper flaps 40 and 68 are bent and bent upward, and are positioned along the curves of the upper inner lid piece 96 and the upper lid piece 92, and dust. And effectively prevent intrusion of garbage.

  In addition, the packaging box of this invention is not limited to said each embodiment, The magnitude | size and shape of each side surface, the structure of a bottom part, etc. can be changed freely. On the side surface to which the insertion piece of the upper lid piece is latched, a lock piece or the like that can be resealed after the upper lid piece is latched and opened is provided.

DESCRIPTION OF SYMBOLS 10 Packaging box 12 Box-forming pieces 14, 16, 18, 20 Side surface 22 Glued pieces 40, 68 Upper flaps 42, 70 Curved folding lines 42a, 70a Side curved folding lines 42b, 70b Upper flap curved folding lines 48 Upper lid piece 52 Folding piece 54 Folding piece folding line

Claims (4)

A box-forming piece integrally punched from a single blank sheet. The box-forming piece has side faces connected in parallel to each other and glued pieces that are glued together to assemble the cylinders into a cylinder. And an upper lid piece connected to one of the side surfaces via a crease line to close an opening of the cylindrical body on the side surface, and a pair of side surfaces adjacent to the side surface provided with the upper lid piece. Provided with an upper flap,
The upper flap is connected to the side surface via an upper flap curved fold line that is curved so as to swell toward the upper flap.
Both ends of the upper flap curve fold line are located at corners of the opening edge of the side surface, and the upper flap is formed by an arc that can be bent at a right angle to the side surface,
In the assembled state of the box-forming piece, the upper flap is bent along the shape of the upper flap curved fold line so that the central portion gently bulges upward and the upper lid piece is the upper flap. A packaging box, wherein the packaging box is overlaid on the surface and is in contact with the upper flap that swells upward and closes without a gap.   The packaging box according to claim 1, wherein a side curved fold line that is curved so as to swell toward the side surface is formed on a side surface provided with the upper flap.   Between the side curved fold line and the upper flap curved fold line is a convex lens-shaped inclined surface portion, and a pair of side edge portions of the upper lid piece has a folded piece having the same shape as the inclined surface portion via a folded piece folding line. In the assembled state of the packaging box, the inclined surface portion intersects the side surface and the upper flap, and the folded piece of the upper lid piece is folded at the folded piece folding line to form the inclined surface portion. The packaging box according to claim 2, which is superposed on the packaging. Between the side curved fold line and the upper flap curved fold line is a convex lens-shaped inclined surface portion, and a pair of side edges of the upper lid piece are cut into the same shape as the upper flap curved fold line, and the packaging box 2. The packaging box according to claim 1, wherein the pair of side edges of the upper lid piece coincide with the side curved line.

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