JP2019123515A - Collapse control structure and packing box - Google Patents

Abstract

To provide a collapse control structure of a packing box which restricts re-folding of outer walls, which can be folded inside the box, along the folding lines.SOLUTION: A collapse control structure 14 controls re-folding of end walls 13, which can be folded inside a packing box 1 as connected to inner flaps 12, caused along folding lines. It has sloping bending lines 20, formed as obliquely extending from the vicinity of a base end of the end wall 13 adjacent to the inner flap 12 to the tip for valley-folding the end wall 13 so that it is folded inside the packing box 1, adhesion pieces 21 which are formed as a part of the end walls 13 located closer to the inner flap 12 rather than the sloping bending lines 20 and are stuck to the surface of the inner flaps 12 via adhesive parts G, and controlling protrusions 22A and 22B which are formed as projecting from the sloping bending lines 20 to the adhesion pieces 21 and restrict valley-folding of the end walls 13 along the sloping bending lines 20 as contacting the surface of the inner flaps 12 in a position avoiding the adhesive parts G in state of folding of the end walls 13 released.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tilt control structure and a packaging box.

  There is known a packaging box in which a side wall and a bottom wall are formed by being raised from a folded state (three-dimensional).

  For example, in the cardboard one-touch case described in Patent Document 1, the overlapping portion of the pair of outer bottom flaps and the pair of inner bottom flaps is bonded with an adhesive, and the bottom surface is formed by being raised from the folded state. . The outer bottom flap is provided with a cut in the middle of the oblique fold line, and the inner bottom flap is provided with a tongue so as to project from the joining edge. The tongues are pierced through the cuts and glued together on the outer surface of the outer bottom flap. As a result, the corner portion (joint portion) of the solid one-touch case is strengthened.

Registered utility model No. 3052411

  In the above-described cardboard one-touch case, it is possible that the respective bottom flaps fall back inside of the case by the folds (return to the folded state) by sticking the tongues to the outer bottom flaps through the slits. It was prevented. However, in the above-described cardboard one-touch case, it is necessary to carry out the difficult work of inserting the tongue in a cut while suppressing the fall of each bottom flap by the fold.

  Moreover, temporarily, when considering the one-touch case where the tongue piece is omitted, the operator had to store the contents in the case while holding down the fall of each bottom flap by the fold. For this reason, the storage operation of the contents could not be performed smoothly.

  In order to solve the above problems, the present invention provides a tilt control structure and a packaging box that regulate re-folding of the outer wall foldable inside the packaging box.

  In order to achieve the above-mentioned object, the present invention is a tilt control structure for restricting re-folding by folding of an outer wall foldable inside the packaging box in a state of being adhered to the inner wall, adjacent to the inner wall An inclined fold line formed obliquely extending from near the base end of the outer wall toward the tip and causing the outer wall to be valley-folded in order to fold the outer wall into the inside of the packaging box, and the inner wall side than the inclined fold line An adhesive piece which is formed as a part of the outer wall located in the lower part and which is adhered to the surface of the inner wall through an adhesive part, and which protrudes from the inclined fold line toward the adhesive piece; In the released state, there is provided a regulating projection which contacts the surface of the inner wall at a position avoiding the bonding portion to regulate valley breaking of the outer wall at the inclined fold line.

  In this case, the adhesive layer is formed so as to protrude from the inclined fold line toward the adhesive piece, and in the process of releasing the folding of the outer wall, the inner wall is brought into contact with the inner wall at a position avoiding the adhesive portion. Preferably, an auxiliary projection is provided to be separated from the piece.

  In this case, the inner wall is provided in a state of being connected to the first wall via a first bending line, folded along the first bending line into the inside of the packaging box, and stacked on the first wall, The outer wall is formed along an extension of the first fold line on a second wall connected to the first wall via a second fold line extending in a direction intersecting the first fold line. It is provided in a state of being continuous through a third fold line, and is folded inside the packaging box along the third fold line while being valley-folded at the inclined fold line and stacked on the second wall, and the inner wall It is preferable that an extension dimension from the first bending line is set to be longer than a shortest distance from the third bending line to a cross point on the base end side of the auxiliary projection and the inclined folding line.

  In this case, it is preferable that a plurality of the control projections be formed along the inclined fold line.

  In order to achieve the above-mentioned object, the packaging box of the present invention is provided with the tilting control structure described in any of the above.

  In this case, a first wall is provided in a state of being connected to the inner wall via a first bending line, and a first wall overlapping with the inner wall folded inside the packaging box along the first bending line, and the first wall A third fold line formed along the extension of the first fold line on the outer wall, the second fold line extending in a direction intersecting with the first fold line. And a second wall overlapping with the outer wall folded along the third fold line while being valley-folded along the third fold line, the second wall being provided in a continuous state via the first wall Preferably, the inner wall and the outer wall are disposed in a standing posture on the peripheral portion of the second wall in a state where the outer wall is unfolded.

  In other cases, a first wall is provided in a state of being connected to the inner wall via a first bending line, and a first wall overlapping with the inner wall folded inside the packaging box along the first bending line; A third fold formed on the wall along a second fold extending in a direction intersecting with the first fold, and formed along the extension of the first fold on the outer wall A second wall overlapping with the outer wall folded along the third folding line while being valley-folded along the third folding line, the second wall overlapping with the outer wall Preferably, the wall and the second wall are alternately arranged in a plurality to form a peripheral wall, and the inner wall and the outer wall close one end surface of the peripheral wall in a state where folding of the outer wall is released.

  According to the present invention, it is possible to restrict (suppress) the re-folding by the fold of the outer wall which can be folded inside the packaging box.

It is a perspective view showing the packing box concerning a 1st embodiment of the present invention. It is a top view showing a blank of a packing box concerning a 1st embodiment of the present invention. It is a top view expanding and showing a tilt control structure etc. of a blank of a packaging box concerning a 1st embodiment of the present invention. It is a perspective view showing the process of manufacturing the packing box concerning a 1st embodiment of the present invention. It is a perspective view which shows the state which folded up the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view which shows the process in which the packaging box which concerns on 1st Embodiment of this invention is assembled. It is a perspective view when the inclination control structure etc. are seen from the outer side of a packaging box in the process of assembling the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view when a tilt control structure etc. are seen from the inside of a packaging box in the process of assembling the packaging box concerning a 1st embodiment of the present invention. It is a top view expanding and showing a tilt control structure etc. of a blank of a packing box concerning a modification of a 1st embodiment of the present invention. It is a top view expanding and showing a tilt control structure etc. of a blank of a packing box concerning other modifications of a 1st embodiment of the present invention. It is a perspective view which shows the bottom face side of the packaging box which concerns on 2nd Embodiment of this invention. It is a top view showing the blank of the packing box concerning a 2nd embodiment of the present invention. It is a perspective view which shows the process in which the packaging box which concerns on 2nd Embodiment of this invention is assembled. It is a perspective view when the inclination control structure etc. are seen from the inside of a packaging box in the process of assembling the packaging box concerning a 2nd embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. In addition, although the term which shows direction or a position is used in this specification, those terms do not limit the technical scope of this invention.

First Embodiment Outline of Packaging Box
The configuration of the packaging box 1 according to the first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing the packaging box 1. FIG. 2 is a plan view showing the blank 5 of the packaging box 1. FIG. 3 is an enlarged plan view showing the tilt restricting structure 14 and the like of the blank 5.

  As shown in FIG. 1, the packaging box 1 is a shallow tray with a depth for loading contents (not shown). The packaging box 1 has an opening 1U on the top surface, and is formed in a substantially rectangular shape with a low height.

  The packaging box 1 is formed by assembling the blank 5 shown in FIG. The blank 5 is formed by punching out a sheet of paperboard (thick paper) with a die cutter or the like. FIG. 2 shows the outer surface (surface) side of the packaging box 1. Further, “X” shown in the drawings indicates the “grain direction” in which the paper fibers (grains) extend, and “Y” indicates the “perpendicular direction” orthogonal to the grain direction.

[blank]
As shown in FIG. 2, the blank 5 is formed in a substantially rectangular shape elongated in the orthogonal direction. The blank 5 includes a bottom wall 10 (second wall), a pair of side walls 11 (first wall), four inner flaps 12 (inner walls), and a pair of end walls 13 (outer walls).

  The bottom wall 10 is formed in a substantially rectangular shape elongated in the orthogonal direction. The pair of side walls 11 is provided at both ends in the paper grain direction of the bottom wall 10 so as to be continuous via second creases L2 (second folds extending in a direction intersecting the first fold). The side wall 11 is formed in a substantially rectangular shape having substantially the same dimension in the direction orthogonal to the bottom wall 10. The dimension of the side wall 11 in the paper grain direction (the extension dimension from the second ruled line L2) is set shorter than the size of the bottom wall 10 in the paper grain direction.

  The four inner flaps 12 are provided in a state of being connected to both end portions in the orthogonal direction of the pair of side walls 11 via a first ruled line L1 (first fold line). The inner flap 12 is formed in a substantially square shape having substantially the same dimension as the side wall 11 in the paper grain direction. The dimension in the orthogonal direction (the extension from the first crease L1) of the inner flap 12 is set to be slightly shorter than the extension of the side wall 11. A pair of inner flaps 12 disposed on both sides in the paper grain direction are opposed to each other across an end wall 13 described later. One side of the end wall 13 side (inner side in the paper grain direction) of the inner flap 12 is inclined from the first ruled line L1 (proximal end) toward the front side in the paper grain direction outside except for the front end.

  The pair of end walls 13 is provided in a state of being connected to both end portions in the orthogonal direction of the bottom wall 10 via third creases L3 (third folds formed along the extension of the first fold) . The end wall 13 is formed in a substantially rectangular shape having substantially the same size as the bottom wall 10 in the paper grain direction. The dimension in the orthogonal direction (extension dimension) of the end wall 13 is set to be substantially the same as the dimension in the paper grain direction of the side wall 11. Each end wall 13 includes a pair of tilt restricting structures 14. In addition, since a pair of end wall 13 is a shape which becomes symmetrical on both sides of the bottom wall 10, in the following description, one end wall 13 is demonstrated.

  The first ruled line L1 and the third ruled line L3 are general-purpose ruled lines pushed in the thickness direction from the surface of the paperboard. The second ruled line L2 is a lead pattern in which a plurality of cutting lines formed by penetrating a cutter in the thickness direction of the paper board are formed on the general-purpose ruled line at predetermined intervals.

<Restraint control structure>
The pair of tilt restricting structures 14 are formed on both sides of the end wall 13 in the direction of the grain (see FIG. 2). In addition, since a pair of inclination control structure 14 is a shape which becomes symmetrical in a paper grain direction, in the following description, one inclination control structure 14 is demonstrated.

  As shown in FIG. 3, the inclination restricting structure 14 includes an inclined fold line 20, an adhesive piece 21, a first restricting protrusion 22 </ b> A, a second restricting protrusion 22 </ b> B, and an auxiliary protrusion 23.

  The inclined fold line 20 is formed to extend obliquely from near the proximal end of the end wall 13 adjacent to the inner flap 12 toward the distal end. Specifically, the inclined fold line 20 is inclined from the base corner of the end wall 13 (the intersection of the second ruled line L2 and the third ruled line L3) toward the center of the end wall 13 to the front of the tip of the end wall 13 It extends. The inclined fold line 20 is formed at an angle of about 45 degrees with respect to the third ruled line L3. The inclined fold line 20 is a general-purpose crease, and causes the end wall 13 to be valley-folded in order to fold the end wall 13 inside the packaging box 1.

  The adhesive piece 21 is formed as a part of the end wall 13 located closer to the inner flap 12 than the inclined fold line 20. In detail, the adhesive piece 21 is a tip corner portion of the end wall 13 which is divided into a substantially triangular shape by the inclined fold line 20.

  The first restricting protrusion 22A and the second restricting protrusion 22B are formed so as to protrude toward the adhesive piece 21 from the inclined fold line 20, respectively. The second restricting protrusion 22B is formed closer to the end of the end wall 13 than the first restricting protrusion 22A. Each of the first restricting protrusion 22A and the second restricting protrusion 22B is formed by inserting a substantially semicircular cutting line into the adhesive piece 21. In detail, the first restricting projection 22A is formed in a substantially semi-tear shape in which the distal end side bulges more than the proximal end side of the end wall 13. The second restriction projection 22B is formed in a substantially semicircular shape (large in projection amount) larger than the first restriction projection 22A.

  The auxiliary projection 23 is formed to project from the inclined fold line 20 toward the adhesive piece 21 on the tip end side of the end wall 13 with respect to the second restriction projection 22B. In detail, the auxiliary projection 23 is formed in a substantially tongue shape by inserting a cutting line perpendicular to the inclined fold line 20 into the adhesive piece 21. The cutting line extends from the tip of the inclined fold line 20 to the tip of the adhesive piece 21. The auxiliary projection 23 protrudes further from the inclined fold line 20 toward the adhesive piece 21 than the second restricting projection 22B. That is, the protrusion amount of the auxiliary protrusion 23 is set larger than the protrusion amount of the second restricting protrusion 22B. The tip of the auxiliary projection 23 is chamfered in an arc shape.

  The extension dimension of the inner flap 12 described above is set longer than the shortest distance from the third ruled line L3 to the intersection P of the base end side of the auxiliary projection 23 and the inclined fold line 20 (the tip of the inclined fold line 20) There is. That is, the extension dimension of the inner flap 12 is longer than the normal line N connecting the tip of the inclined broken line 20 and the third ruled line L3 and perpendicular to the third ruled line L3.

[Manufacture of packaging box]
Next, with reference to FIG. 4 and FIG. 5, the manufacturing process of the packaging box 1 is demonstrated. FIG. 4 is a perspective view showing a process of manufacturing the packaging box 1. FIG. 5 is a perspective view showing the packaging box 1 in a folded state. The packaging box 1 may be manufactured manually by a worker, or may be manufactured automatically or semi-automatically by a box making machine. Here, as an example, a case where a worker manually manufactures the packaging box 1 will be described. Further, hereinafter, in order to simplify the description, attention is focused on the periphery of one tilt restriction structure 14.

  As shown in FIG. 4, the operator bends the end wall 13 at the third ruled line L3 so as to overlap the end wall 13 on the back surface of the bottom wall 10 with the back surface of the blank 5 facing upward. Subsequently, the worker folds back the adhesive piece 21 at the inclined fold line 20 so as to overlap the surface of the end wall 13. Then, the first regulation projection 22A, the second regulation projection 22B and the auxiliary projection 23 are respectively cut out from the adhesive piece 21 and relatively projected from the inclined fold line 20. Further, holes and notches corresponding to the first and second restricting protrusions 22A and 22B and the auxiliary protrusion 23 are formed in the adhesive piece 21.

  Next, the operator bends the inner flap 12 at the first ruled line L <b> 1 so as to overlap the back surface of the side wall 11. Subsequently, the worker adheres the adhesive (adhesive portion G) to the back surface of the adhesive piece 21, and then bends the side wall 11 along the second ruled line L2 so as to overlap the back surface of the bottom wall 10 (dotted line thick line in FIG. 4) See arrow). Then, the bonding piece 21 is bonded to the surface of the inner flap 12 via the bonding portion G. In addition, as the adhesion part G (adhesive agent), for example, a hot melt adhesive, a synthetic resin emulsion adhesive, a double-sided tape or the like can be used. Further, the bonding portion G is attached to the bonding piece 21 at a position avoiding holes and notches corresponding to the first and second restricting protrusions 22A and 22B and the auxiliary protrusion 23.

  Thus, the production of the packaging box 1 is completed. As shown in FIG. 5, the packaging box 1 is in a flat folded state in which the side wall 11 and the end wall 13 are turned over on the bottom wall 10. In this state, the end wall 13 is folded into the inside of the packaging box 1 along the third crease L3 while being valley-folded at the inclined fold line 20 and stacked on the bottom wall 10 (see FIG. 4). The inner flap 12 is folded into the inside of the packaging box 1 along the first ruled line L1 and overlapped on the side wall 11 (see FIG. 4). The side wall 11 is folded into the inside of the packaging box 1 along the second crease L2 and stacked on the bottom wall 10. Also, the side wall 11 sandwiches the inner flap 12 with the adhesive piece 21.

[Assembly of packaging box]
Next, the assembly process of the packaging box 1 will be described with reference to FIGS. 1 and 6 to 8. FIG. 6 is a perspective view showing the process of assembling the packaging box 1. FIG. 7 is a perspective view of the tilt control structure 14 and the like when viewed from the outside of the packaging box 1 in the process of assembling the packaging box 1. FIG. 8 is a perspective view of the tilt control structure 14 and the like as viewed from the inside of the packaging box 1 in the process of assembling the packaging box 1.

  As shown in FIG. 6, the folded packaging box 1 forms a tray shape by raising the side wall 11 and the end wall 13 which are fallen on the bottom wall 10. For example, the worker hooks the fingers of both hands on the pair of side walls 11 and the one end wall 13 to cause the side wall 11 and the end wall 13 which are inward to fall outward. The end wall 13 begins to return to a flat state before being valley folded at the inclined fold line 20 (the fold of the end wall 13 begins to be released gradually). Then, the tip end portion of the auxiliary projection 23 starts to move from the tip end of the inner flap 12 toward the base end (first ruled line L1) while in contact with the surface of the inner flap 12.

  As shown in FIG. 7 and FIG. 8, when the release of folding of the end wall 13 (rise of the side wall 11 and the end wall 13) progresses, the auxiliary projection 23 is in a posture crossing the inner flap 12. Push the tip side of 12 and bend it outward. Then, the gap S between the non-adhered portion of the inner flap 12 and the adhesive piece 21 starts to widen. The gap S is such that the first and second restricting protrusions 22A and 22B can pass through without contacting (or while slightly contacting) the inner flap 12 in the process of releasing the end wall 13 from being folded. It is an interval. Thus, the auxiliary projection 23 contacts the surface of the inner flap 12 at a position avoiding the bonding portion G in the process of releasing the folding of the end wall 13 to separate the inner flap 12 from the adhesive piece 21.

  When the rising of the side wall 11 and the end wall 13 further progresses, the leading end of the inner flap 12 wraps around the back surface side of each of the protrusions 22A, 22B, 23. Then, since pushing-in of the inner flap 12 by the auxiliary | assistant protrusion 23 becomes weak, the said clearance gap S begins to become narrow. When the end wall 13 is unfolded (returns to the flat end wall 13), the side wall 11, the inner flap 12 and the end wall 13 are respectively arranged in the standing posture at the peripheral portion of the bottom wall 10 (FIG. 1). reference). In this state, the tip of the inner flap 12 is moved to a position overlapping the back surface of the end wall 13. The other end wall 13 is also produced in the same manner as above.

  Thus, the assembly of the packaging box 1 is completed (see FIG. 1). Then, the worker places the contents on the bottom wall 10 of the assembled packaging box 1.

  As shown in FIG. 1, in a state where the end wall 13 is unfolded, the first restricting protrusion 22A and the second restricting protrusion 22B each contact the surface of the inner flap 12 at a position avoiding the bonding portion G. doing. Moreover, the auxiliary | assistant protrusion 23 is contacting the surface of the inner flap 12 in the position which avoided the adhesion part G similarly to this. The end wall 13 in the standing posture tries to fall again inward by the third ruled line L3 or the fold at the inclined fold line 20, but the respective projections 22A, 22B, 23 abut against the inner flap 12 so that the end wall 13 is inclined. A valley break of the end wall 13 at the fold line 20 and a fall of the end wall 13 at the third ruled line L3 are restricted. That is, the tilt restricting structure 14 restricts the re-folding by the fold of the end wall 13 which can be folded into the inside of the packaging box 1 in a state of being adhered to the side wall 11.

  In the tilt control structure 14 (the packaging box 1) according to the first embodiment described above, the end wall 13 is released from being folded and is substantially flat (the folded packaging box 1 is raised to form a three-dimensional shape) In the state, the first and second restriction projections 22A and 22B abut against the inner flap 12 (see FIG. 1). According to this configuration, even if the end wall 13 starts to be refolded by the fold at the inclined fold line 20 or the like, the first and second restricting projections 22A and 22B may get stuck with the inner flap 12 and an obstacle. Therefore, it is possible to regulate the insertion. As a result, the end wall 13 can be easily released from the state of being unfolded without requiring any special operation for the restriction of folding. As a result, it is possible to prevent the inner flap 12 and the end wall 13 from falling back to the inside of the packaging box 1 again, and the operation of containing the contents in the packaging box 1 can be smoothly performed.

  Further, in the tilt restricting structure 14 according to the first embodiment, the auxiliary projection 23 pushes the inner flap 12 during the period until the end wall 13 is folded at the inclined fold line 20 and becomes substantially flat. A gap S was formed between the adhesive 12 and the adhesive piece 21 (see FIG. 8). As a result, in the process of releasing the end wall 13 from being folded, it is possible to suppress a defect such as bending of the first and second restricting protrusions 22A and 22B due to interference with the inner flap 12. Further, the folding of the end wall 13 can be regulated by bringing the auxiliary projection 23 into contact with the surface of the inner flap 12 in a state where the folding of the end wall 13 is released (see FIG. 1).

  Further, according to the tilt restricting structure 14 according to the first embodiment, the tip end portion of the inner flap 12 is located on the tip end side of the intersection P on the base end side of the auxiliary projection 23 and the inclined fold line 20 ( 3), when assembling the packaging box 1, the auxiliary projection 23 can be properly abutted against the inner flap 12.

  Further, in the tilt restricting structure 14 according to the first embodiment, the first and second restricting protrusions 22A and 22B are formed along the inclined fold line 20. According to this configuration, when the two restricting protrusions 22A and 22B abut against the inner flap 12, it is possible to effectively restrict the refolding of the end wall 13 by the fold at the inclined folding line 20 or the like.

  In addition, in the inclination control structure 14 which concerns on 1st Embodiment, although two control protrusion 22A, 22B was formed, this invention is not limited to this. For example, either one of the two restriction projections 22A and 22B may be omitted, or three or more restriction projections (not shown) may be formed. Moreover, although each control protrusion 22A, 22B was formed in substantially semicircular shape, it may be formed not only in this but for example, the polygonal shape which rounded off the angle (not shown).

  Moreover, in the inclination control structure 14 which concerns on 1st Embodiment, although the auxiliary | assistant protrusion 23 was formed in the front-end | tip part of the end wall 13, this invention is not limited to this. As shown in FIG. 9, for example, the auxiliary projection 23 may be formed in the middle portion of the end wall 13 (in the middle of the inclined fold line 20). Further, as shown in FIG. 10, for example, the auxiliary protrusion 23 may be formed between the first restricting protrusion 22A and the second restricting protrusion 22B. Furthermore, for example, the auxiliary projection 23 may be formed more proximal to the first restriction projection 22A (not shown).

  Moreover, in the packaging box 1 which concerns on 1st Embodiment, although the four inclination control structures 14 were formed in four corner parts (corner part), this invention is not limited to this. At least one tilt control structure 14 may be formed on the end wall 13. Also, for example, two tilt restricting structures 14 may be formed at diagonal corners of the packaging box 1.

  Moreover, although the packaging box 1 which concerns on 1st Embodiment was an elongate tray in the orthogonal direction, and was shallow tray depth, not only this but the shape and dimension of each wall etc. of the packaging box 1 are changed arbitrarily Good.

Second Embodiment
Next, with reference to FIG. 11 and FIG. 12, the structure of the packaging box 2 which concerns on 2nd Embodiment is demonstrated. FIG. 11 is a perspective view showing the bottom side of the packaging box 2. FIG. 12 is a plan view showing the blank 6 of the packaging box 2. In the following description, the same or corresponding components as or to those of the packaging box 1 according to the first embodiment are denoted by the same reference numerals, and the same or corresponding descriptions as those of the packaging box 1 are omitted.

  As shown in FIG. 11, the packaging box 2 is a bottom one-touch case in which the bottom surface (upper side in FIG. 11) of the rectangular cylindrical peripheral wall 2A is closed. The packaging box 2 has an opening 2U on the upper surface (downward in FIG. 11), and is formed in a substantially rectangular parallelepiped shape having a height higher than that of the packaging box 1 according to the first embodiment.

[blank]
The packaging box 2 is formed by assembling the blank 6 shown in FIG. FIG. 12 shows the outer surface (surface) side of the packaging box 2. The blank 6 includes a pair of first side walls 30 (first wall), a pair of second side walls 31 (second wall), a passage piece 32, a pair of inner flaps 33 (inner wall), and a pair of outer flaps And 34 (outer wall).

  The pair of first side walls 30 and the pair of second side walls 31 are provided alternately in the orthogonal direction via the second ruled line L2 (general-purpose ruled line). The first side wall 30 and the second side wall 31 are each formed in a substantially rectangular shape having the same dimension in the grain direction. The second side wall 31 is formed to be longer in the orthogonal direction than the first side wall 30. The passage piece 32 is provided in a state of being continuous with one end portion of one second side wall 31 in the orthogonal direction via a second ruled line L2. The pair of inner flaps 33 is provided in a state of being connected to the other end (the lower end in the assembled state) of the pair of first side walls 30 in the paper mesh direction via the first ruled line L1 (general purpose ruled line). The pair of outer flaps 34 is provided in a state of being connected to the other end of the pair of second side walls 31 in the paper grain direction via a third ruled line L3 (general-purpose ruled line). In addition, since a pair of inner flaps 33 are substantially the same shape, in the following description, one inner flap 33 is demonstrated. For the same reason, one outer flap 34 will be described.

  The size (extension size) of the inner flap 33 in the paper grain direction is set to about half of the size in the orthogonal direction of the first side wall 30. The inner flap 33 is formed in a substantially trapezoidal shape that narrows gradually from the proximal end to the distal end. The size (extension size) of the outer flap 34 in the paper grain direction is set to be substantially the same as the extension size of the inner flap 33. The outer flap 34 is formed in a substantially rectangular shape. A tilt restricting structure 35 is formed on the other of the outer flaps 34 in the orthogonal direction.

  The inclination restricting structure 35 includes an inclined fold line 40, an adhesive piece 41, an restricting protrusion 42, and an auxiliary protrusion 43.

  The inclined fold line 40 (general ruled line) extends from the position away from the proximal corner of the outer flap 34 to the tip side toward the center of the outer flap 34 (approximately 45 degrees) and extends to the front of the tip of the outer flap 34 There is. The adhesive piece 41 is a tip corner of the outer flap 34 divided by the inclined fold line 40. The restriction projection 42 is formed to protrude from the inclined fold line 40 toward the adhesive piece 41. The restriction projection 42 is formed by inserting a substantially square cut line whose corner is rounded in the bonding piece 41.

  The auxiliary projection 43 is formed to project from the inclined fold line 40 toward the adhesive piece 41 on the tip end side of the outer flap 34 than the restriction projection 42. In detail, the auxiliary projection 43 is formed by inserting a substantially triangular notch whose oblique side is a cutting line perpendicular to the inclined fold line 40 into the adhesive piece 41. The auxiliary projection 43 protrudes larger than the restriction projection 42, and its tip is chamfered in an arc shape.

[Manufacture of packaging box]
Next, with reference to FIG. 12, the manufacturing process of the packaging box 2 is demonstrated. In the following, in order to simplify the description, attention is focused on the periphery of one tilt restriction structure 35.

  The operator bends the outer flap 34 at the third ruled line L3 so as to overlap the back surface of the second side wall 31, and folds back the adhesive piece 41 at the inclined fold line 40 so as to overlap the surface of the outer flap 34. Next, the operator bends the inner flap 33 at the first ruled line L1 so as to overlap the back surface of the first side wall 30. Subsequently, the worker adheres the adhesive (adhesion part G) to the back surface of the adhesive piece 41 and the surface of the passage piece 32, and then forms the first side wall 30 and the second side wall 31 located on both sides in the orthogonal direction. It bends at the second ruled line L2. Then, the passage pieces 32 are adhered to the back surface of the first side wall 30 located on the opposite side, and the respective adhesion pieces 41 are adhered to the surface of the inner flap 33 through the adhesion portion G.

  Thus, the production of the packaging box 2 is completed. When assembled, the packaging box 2 is folded at two diagonally opposite second creases L2 (not shown). In this state, the outer flaps 34 are folded into the inside of the packaging box 2 along the third ruled line L3 while being valley-folded at the inclined fold line 40, and are superimposed on the second side wall 31. The inner flaps 33 are folded into the inside of the packaging box 2 along the first crease L1 and stacked on the first side wall 30.

[Assembly of packaging box]
Next, the assembly process of the packaging box 2 will be described with reference to FIG. 11, FIG. 13 and FIG. FIG. 13 is a perspective view showing the process of assembling the packaging box 2. FIG. 14 is a perspective view of the tilt control structure 35 and the like as viewed from the inside of the packaging box 2 in the process of assembling the packaging box 2.

  As shown in FIG. 13, the folded packaging box 2 forms a box shape by raising the first side wall 30 and the second side wall 31 so as to be orthogonal to each other. For example, when the worker causes the pair of first side walls 30 to face each other and causes the pair of second side walls 31 to face each other at a position substantially orthogonal to the first side wall 30, a substantially rectangular cylindrical peripheral wall 2A is formed. Further, the inner flaps 33 and the outer flaps 34 are pushed outward from the inside of the peripheral wall 2A. That is, the folding of the outer flap 34 starts to be released.

  As shown in FIGS. 13 and 14, when the folding of the outer flap 34 starts to be released, the tip of the auxiliary projection 43 moves on the tip side of the inner flap 33 while moving in contact with the surface of the inner flap 33. Push in. That is, the auxiliary projection 43 contacts the surface of the inner flap 33 at a position avoiding the adhesive portion G to separate the inner flap 33 from the adhesive piece 41 (a gap between the non-adhered portion of the inner flap 33 and the adhesive piece 41 S)).

  As shown in FIG. 11, when the folding of the outer flaps 34 is released (returns to the flat outer flaps 34), the inner flaps 33 and the outer flaps 34 close the lower end surface (one end surface) of the peripheral wall 2A. That is, the inner flaps 33 and the outer flaps 34 form the bottom of the packaging box 2. In this state, a part of the inner flap 33 which the auxiliary projection 43 is in contact with is moved to a position overlapping the back surface of the outer flap 34. Thus, the assembly of the packaging box 2 is completed.

  In the state where the assembly of the packaging box 2 is completed, the regulation protrusion 42 and the auxiliary protrusion 43 are in contact with the surface of the inner flap 33 at a position avoiding the bonding portion G, respectively. The outer flaps 34 try to fall again inward by the folds at the third ruled line L3 and the inclined fold lines 40, but the respective projections 42 and 43 abut against the inner flaps 33, whereby the outer flaps 34 at the inclined fold lines 40 Regulate the valley break etc.

  According to the tilt control structure 35 (the packaging box 2) according to the second embodiment described above, the inner flap 33 and the outer flap 34 can be prevented from falling again inside the packaging box 2 (peripheral wall 2A), etc. The same effect as the tilt control structure 14 (the packaging box 1) according to the first embodiment can be obtained.

  In addition, in the inclination control structure 35 which concerns on 2nd Embodiment, although one control protrusion 42 was formed, not only this but two or more control protrusions 42 may be formed. Moreover, although the control protrusion 42 was formed in the substantially square shape which rounded off the corner, it may be formed in semicircle shape not only in this, for example.

  Moreover, in the inclination control structure 35 which concerns on 2nd Embodiment, although the auxiliary protrusion 43 was formed in the front-end | tip part of the outer flap 34, not only this but the middle part of the outer flap 34 (inclined fold line 40 It may be formed on the proximal side with respect to the control protrusion 42 or in the middle) (not shown).

  Moreover, in the packaging box 2 which concerns on 2nd Embodiment, although the two inclination control structures 35 were formed in the two corner parts (corner part) which become a diagonal, this invention is not limited to this. The tilt control structure 35 may be formed in at least one outer flap 34.

  Moreover, although the packaging box 2 which concerns on 2nd Embodiment was formed in the substantially rectangular parallelepiped shape, the shape and dimension of not only this but each wall of the packaging box 2 may be changed arbitrarily.

  In the packaging box 1 according to the first embodiment, the first ruled line L1, the third ruled line L3 and the inclined fold line 20 are general ruled lines, and the second ruled line L2 is a lead ruled line. Further, in the packaging box 2 according to the second embodiment, the first to third ruled lines L1 to L3 and the inclined fold line 40 are general-purpose ruled lines. However, these are only examples and the present invention is not limited thereto. For example, the first ruled line L1 or the like may be a folding line for bending the paperboard, such as a ruled line pushed in in the thickness direction from the back surface of the paperboard or a perforation line formed by inserting a sewing blade. Further, the grain direction of the blanks 5 and 6 of the packaging boxes 1 and 2 according to the first and second embodiments is not limited to the above description, and the grain direction and the orthogonal direction may be interchanged.

  Moreover, although the packaging boxes 1 and 2 which concern on 1st and 2nd embodiment were formed by the paper board, they are formed not only by this but the board made of resin, the paper board made of paper or resin, etc., for example It may be

  In addition, description of the said embodiment shows one aspect in the inclination suppression structure which concerns on this invention, and a packaging box, Comprising: The technical scope of this invention is not limited to the said embodiment.

1, 2 Packaging box 2A Peripheral wall 10 Bottom wall (second wall)
11 Side wall (first wall)
12 inner flap (inner wall)
13 End wall (outer wall)
14, 35 tilting control structure 20, 40 tilting fold line 21, 41 adhesive piece 22A first regulating projection 22B second regulating projection 23, 43 auxiliary projection 30 first side wall (first wall)
31 second side wall (second wall)
33 inner flap (inner wall)
34 Outside flap (outer wall)
42 Regulating projection G Bonding part L1 1st ruled line (1st bending curve)
L2 Second ruled line (second fold line)
L3 3rd ruled line (3rd curve)
P intersection point

Claims (7)

In the tilt control structure (14, 35) that restricts the re-folding by the fold of the outer wall (13, 34) that can be folded inside the packaging box (1, 2) in a state of being bonded to the inner wall (12, 33) There,
An inclined fold line (20, 40) which is formed to extend diagonally from near the proximal end of the outer wall adjacent to the inner wall toward the tip, and fold the outer wall in order to fold the outer wall into the inside of the packaging box When,
Adhesive pieces (21, 41) formed as a part of the outer wall positioned closer to the inner wall than the inclined fold line and adhered to the surface of the inner wall via an adhesive part (G);
The outer wall is formed so as to protrude toward the adhesive piece from the inclined fold line, and in a state where the outer wall is unfolded, the outer wall is contacted with the surface of the inner wall at a position avoiding the adhesive portion. A tilt control structure comprising: control protrusions (22A, 22B, 42) for controlling valley breakage.   It is formed to project toward the adhesive piece from the inclined fold line, and in the process of unfolding the outer wall, contacts the surface of the inner wall at a position avoiding the adhesive part and separates the inner wall from the adhesive piece The tilt control structure according to claim 1, further comprising an auxiliary protrusion (23, 43) for causing the movement. The inner wall is provided in a state of being connected to the first wall (11, 30) via a first fold line (L1), and is folded inside the packaging box along the first fold line, and the first Stacked on the wall,
The outer wall is formed on a second wall (10, 31) connected to the first wall via a second fold line (L2) extending in a direction intersecting the first fold line. It is provided in a continuous state via a third fold line (L3) formed along an extension line, and is folded inside the packaging box along the third fold line while being valley folded at the inclined fold line Stacked on the second wall,
The extension dimension of the inner wall from the first bending line is set to be longer than the shortest distance from the third bending line to the intersection (P) on the base end side of the auxiliary projection and the inclined bending line. The tilt control structure according to claim 2, characterized in that:   The tilt control structure according to any one of claims 1 to 3, wherein a plurality of the control protrusions are formed along the inclined fold line.   A packaging box, characterized in that it comprises a tilting control structure (14, 35) according to any of the preceding claims. A first wall (11) which is provided in a state of being continuous with the inner wall (12) via a first fold line (L1), and which overlaps the inner wall folded inside the packaging box along the first fold line When,
It is provided in the state which continued in the said 1st wall via the 2nd fold line (L2) extended in the direction which intersects the said 1st fold line, and it is an extension line of the 1st fold line in the above-mentioned outer wall (13) The outer wall is provided in a continuous state via a third fold line (L3) formed along the outer fold and is folded inside of the packaging box along the third fold while being valley folded at the inclined fold line And an overlapping second wall (10);
The package according to claim 5, wherein the first wall, the inner wall and the outer wall are arranged in a standing posture on the peripheral portion of the second wall in a state in which the outer wall is unfolded. Box (1). A first wall (30) which is provided in a state of being continuous with the inner wall (33) via a first fold line (L1), and which overlaps the inner wall folded inside the packaging box along the first fold line When,
The first wall is provided in a continuous manner via a second fold line (L2) extending in a direction intersecting the first fold line, and the outer wall (34) is an extension of the first fold line The outer wall is provided in a continuous state via a third fold line (L3) formed along the outer fold and is folded inside of the packaging box along the third fold while being valley folded at the inclined fold line And an overlapping second wall (31);
The first wall and the second wall are alternately arranged in a plurality to form a peripheral wall (2A),
The packaging box (2) according to claim 5, wherein the inner wall and the outer wall close one end surface of the peripheral wall in a state where the folding of the outer wall is released.

Images