JP2019112073A - Packing box - Google Patents

Abstract

To provide a packing box which easily forms a structure to protect corners of a stored item and enables easy disposal after opening.SOLUTION: A packing box 1 comprises a bottom panel 10 on which a plate-shaped item M is placed, a pair of side wall panels 11 which are connected to both fore and rear sides of the bottom panel 10 and face both fore and rear sides of the stored item M placed on the bottom panel 10, a pair of end wall panels 12 which are connected to both right and left sides of the bottom panel 10 and face both right and left sides of the stored item M of the bottom panel 10, a top panel 13 extending from a pair of side wall panels 11 and facing the top face of the stored item M placed on the bottom panel 10, and corner protecting parts 15, arranged on both right and left sides of the top panel 13, bent inward to overlap each inside of the bottom panel 10, the side wall panels 11, the end wall panels 12 and the top panel 13 respectively, and placed between each corner C of the stored item M and the bottom panel 10, the side wall panels 11, the end wall panels 12 and the top panel 13 respectively for the protection of the corners C.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a packaging box capable of protecting the corners of contents.

  For example, Patent Document 1 discloses a corner cushioning material having an outer frame formed in a tubular shape whose cross-sectional shape is rectangular. Two stacked plate-like objects to be packed (contents) are wrapped in upper and lower two cover materials with the corner portions covered with the corner cushioning material. The item to be packaged and the two cover materials are bound by a binding material. In this state, the corner of the object to be packaged is doubly covered and protected by the corner cushioning material and the two cover materials.

Unexamined-Japanese-Patent No. 2007-320654

  However, an operator who packages the item to be packaged must place a corner cushioning material on the corner of the item to be packaged after placing the item to be packaged on the lower cover material, and the packaging operation (sealing operation) The problem is that it takes time and effort. Moreover, since the corner cushioning material is a separate member from the two cover members, it is necessary to manufacture and store a plurality of different members, and there was a problem that it takes time and cost to manage these members. . Furthermore, since the corner cushioning material and the two cover materials become separate wastes after the package is taken out (after opening), there is a problem that it takes time and effort to collect the wastes.

  In order to solve the problems described above, the present invention provides a packaging box that can easily form a structure for protecting the corners of the contents and can facilitate disposal after opening.

  In order to achieve the above-mentioned object, the packaging box of the present invention is continuously provided at the bottom wall on which the plate-like or hexahedrally formed contents are disposed, and at both ends of the bottom wall in the first direction, The bottom wall is connected to a pair of first walls facing both side surfaces in the first direction of the contents disposed on the bottom wall, and both end portions in the second direction intersecting the first direction of the bottom wall, the bottom wall The second wall disposed opposite to the side surfaces of the content in the second direction, and the tip portion of at least one of the first walls, the content being disposed on the bottom wall An upper wall facing the upper surface of the object and a side portion of the upper wall connected in the second direction and bent so as to overlap the inner surface of the lower wall, the first wall, the second wall and the upper wall Are disposed between each of the bottom wall, the first wall, the second wall and the top wall and the corner of the content It is equipped with a, and the angular contact portion to protect the corners.

  In this case, the pair of first walls is connected to both ends of the bottom wall in the first direction via a first bending line, and the pair of second walls are ends of the bottom wall in the second direction. The ceiling wall is connected to the front end of the first wall via a third bending line, and the corner abutment part is connected to the third bending line from the third bending line A cutting line cut inward from the second direction side end of the ceiling wall at a position spaced to the front end side of the ceiling wall, and an end portion of the third folding curve to the tip of the cutting line A top surface protection portion formed between a diagonally extending folding line and a first side surface connected to an end of the top surface protection portion in a second direction via a first folding line A third protection member, a bottom surface protection member continuously connected to an end of the first side surface protection member in the second direction via a second fold line, and a third insertion member on the side of the second wall of the bottom surface protection member The line And a second side protection portion provided in series, and in a state in which the top surface protection portion is folded back along the folding line and overlapped on the inner surface of the top wall, the first side surface protection portion Is superimposed on the inner surface of the first wall at a position where the first folding line corresponds to the third folding line, and the bottom protection portion is at a position where the second folding line corresponds to the first folding line It is preferable that the second side surface protection portion be overlapped on the inner surface of the second wall at a position where the third fold line corresponds to the second fold line.

  In this case, the pair of first walls is connected to both ends of the bottom wall in the first direction via a first bending line, and the pair of second walls are ends of the bottom wall in the second direction. The ceiling wall is connected to the front end of the first wall via a third bending line, and the corner support is in the second direction of the ceiling wall And a second side protection portion having a folding line formed parallel to the first folding line at an intermediate portion, and a second direction of the second side protection portion. A top surface protection portion continuously connected to the end of the second portion via a second fold line, and a first side surface continuously connected to the second wall side of the top surface protection portion via a third fold line A protection portion, and a bottom surface protection portion continuously provided on the side of the second wall of the first side surface protection portion via a fourth folding line, the second side surface protection portion being along the folding line Turn back In the doubled state, the top surface protection portion is superimposed on the inner surface of the top wall at a position where the second folding line corresponds to the first folding line, and the first side surface protection portion is The third fold line is superimposed on the inner surface of the first wall at a position corresponding to the third fold line, and the bottom surface protection portion is positioned at a position at which the fourth fold line corresponds to the first fold line. The second side protection portion doubled in a state where the top surface protection portion is disposed between the top wall and the top surface of the content, the second side surface protection portion being overlapped with the inner surface of the bottom wall is the first side Preferably, it is bent along the folding line and the second folding line and disposed between the side surface in the second direction of the corner of the content and the second wall.

  In this case, a pair of the ceiling walls is provided in a row at the tip of the pair of first walls, and four corner portions of the content are protected on both sides in the second direction of the pair of ceiling walls. It is preferable that the four corner rests be provided in series.

  In this case, it is preferable that the pair of ceiling walls be formed with an engaging portion that engages the pair of ceiling walls and maintains the ceiling wall in a state facing the top surface of the contents.

  In this case, it is preferable to further include a lid wall continuously connected to at least one tip end of the pair of second walls and overlapped on the top wall facing the top surface of the contents.

  In this case, it is preferable that the ceiling wall and the lid wall be formed with a lock structure for fixing the lid wall in a state of being superimposed on the ceiling wall.

  ADVANTAGE OF THE INVENTION According to this invention, the structure which protects the corner | angular part of the content can be easily formed in a packaging box. In addition, disposal of the packaging box after opening can be facilitated.

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 which expands and shows a part of blank of a packaging box concerning a 1st embodiment of the present invention. It is a perspective view which shows the state which turned over the corner reliance part of the packaging box which concerns on 1st Embodiment of this invention. It is a top view which expands and shows one corner reliance part etc. of a packaging box concerning a 1st embodiment of the present invention. It is a perspective view showing the state where the contents were covered with the top wall of the packaging box concerning a 1st embodiment of the present invention. It is a perspective view showing the process of fixing the lid wall of the packaging box concerning a 1st embodiment of the present invention to a top wall. It is a top view which expands and shows one corner reliance part etc. of the packaging box concerning the modification of a 1st embodiment of the present invention. It is a top view showing the blank of the packing box concerning a 2nd embodiment of the present invention. It is a top view which expands and shows a part of blank of a packaging box concerning a 2nd embodiment of the present invention. It is a perspective view which shows the state which return | folded the angle | corner part of the packaging box which concerns on 2nd Embodiment of this invention. It is a top view which expands and shows one corner reliance part etc. of a packaging box concerning a 2nd embodiment of the present invention. It is a top view showing a part of the state where the contents were covered with the top wall of 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 the drawings, "Fr" indicates "front", "Rr" indicates "rear", "L" indicates "left", "R" indicates "right", and "U" indicates "right". “Up” is shown, “D” is “down”. The front-rear direction (first direction) is orthogonal (cross) to the left-right direction (second direction), and the up-down direction is orthogonal (cross) to the front-rear direction and the left-right direction. Although terms used herein indicate directions or positions, these terms are used for the convenience of description and do not limit the technical scope of the present invention.

First Embodiment Outline of Packaging Box
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 a plan view showing a part of the blank 5 in an enlarged manner.

  As shown in FIG. 1, the packaging box 1 is a so-called box-shaped (Yako-shaped) box, and is formed in a rectangular parallelepiped shape that is flat in the vertical direction. The packaging box 1 is sealed by alternately standing up a pair of side walls 11 and a pair of end walls 12 on the four sides of the bottom wall 10 and closing the top opening. In the packaging box 1, for example, the contents M formed in a rectangular plate shape (or hexahedron shape), such as a top plate of a desk, are accommodated. In addition, in this specification, terms such as the top, bottom and side of the content M are used, but these do not mean the top or the like in the use state of the content M, but are packaged in the packaging boxes 1 and 2 The concept is based on the attitude of the content M in In addition, the top surface, the bottom surface, the side surfaces, and the like of the content M may be flat, or may include a slope or a curved surface. Moreover, although the term "corner C of the content M" is used in this specification, the corner C is a concept including a shape in which a pair of side surfaces intersects and a corner protrudes, a shape in which a corner is chamfered, etc. is there.

  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 paper cardboard sheet with a die. The corrugated cardboard sheet is, for example, a double-faced corrugated cardboard sheet in which a front liner 9B and a back liner 9C (see FIG. 4 etc.) are laminated on the front and back of a corrugated centerline 9A. FIG. 2 shows the front surface liner 9B side (the outer surface side of the packaging box 1). In this specification, the direction parallel to the center 9A of the cardboard is referred to as the "step direction", and the direction orthogonal to the step direction is referred to as the "flow direction". “X” shown in the drawings indicates “stage direction”, and “Y” indicates “flow direction”.

  As shown in FIG. 2, the blank 5 has a bottom wall 10, a pair of side walls 11, a pair of end walls 12, a pair of top walls 13A, 13B, a pair of lid walls 14, and four corner abutments. It has 15 and. A pair of side walls 11 as an example of the first wall is connected to both ends of the bottom wall 10 in the step direction (first direction) via first folding lines 21. A pair of end walls 12 as an example of the second wall is connected to both ends in the flow direction (second direction) of the bottom wall 10 via a second fold line 22. The pair of top walls 13A and 13B is continuously connected to the tip of the pair of side walls 11 via a third fold line 23. The pair of lid walls 14 is connected to the tip of the pair of end walls 12 via a fourth fold line 24. The four corner abutment portions 15 are continuously provided on both sides in the flow direction of the top walls 13A and 13B. The first to fourth fold lines 21 to 24 are general ruled lines formed by crushing a corrugated cardboard sheet in the thickness direction from the back liner 9C side in a straight line.

<Bottom wall, side wall, end wall>
The bottom wall 10 is formed in a substantially rectangular shape elongated in the flow direction. Since the content M is disposed on the bottom wall 10, the dimensions of the bottom wall 10 are set in accordance with the planar shape of the content M. The pair of side walls 11 are each formed in a substantially rectangular shape elongated in the flow direction. The dimension in the step direction (extension dimension) of the side wall 11 is set in accordance with the thickness of the content M, and the dimension in the flow direction of the side wall 11 is set substantially the same as the dimension in the flow direction of the bottom wall 10. Each of the pair of end walls 12 is formed in a substantially rectangular shape which is long in the step direction. The dimension in the flow direction (extension dimension) of end wall 12 is set to be substantially the same as the extension dimension of side wall 11, and the dimension in the step direction of end wall 12 is set to be substantially the same as the dimension in the step direction of bottom wall 10. ing.

<Sky wall, lid wall>
The pair of ceiling walls 13A and 13B are each formed in a substantially rectangular shape long in the flow direction. The dimension in the flow direction of each top wall 13A, 13B is set to be substantially the same as the dimension in the flow direction of the side wall 11. The dimension in the step direction (extension dimension) of the front ceiling wall 13A is set shorter than the extension dimension of the rear ceiling wall 13B. The pair of ceiling walls 13A and 13B are formed so as to overlap each other in a sealed state. The pair of lid walls 14 are each formed in a substantially rectangular shape elongated in the step direction. The dimension in the flow direction (extension dimension) of the lid wall 14 is set to be longer than the extension dimension of the front top wall 13A and shorter than the extension dimension of the rear top wall 13B. Further, the dimension of the lid wall 14 in the step direction is set to be substantially the same as the dimension of the end wall 12 in the step direction. In the present specification, for convenience of explanation, in the description common to the pair of ceiling walls 13A and 13B, only the digit for operation will be used as a code.

(Engagement part)
An engaging portion 30 is formed at the tip of the pair of ceiling walls 13A and 13B. The engagement portion 30 includes an engagement convex portion 31 formed in the vicinity of the flow direction center of the top wall 13A and an engagement recess 32 formed in the vicinity of the flow direction center of the top wall 13B. The engaging portion 30 has a function of engaging the pair of top walls 13A and 13B with each other to maintain the top surface of the content M facing the top surface.

  The engagement convex portion 31 is formed between a pair of notches 31A cut from the top end of the top wall 13A toward the base end. That is, the pair of notches 31A is recessed at the end of the top wall 13A, whereby the engaging protrusion 31 is relatively protruded. A substantially semicircular finger hooking portion 31B is formed in a recessed state at a central end portion of the engagement convex portion 31. The engaging convex portion 31 is formed with a pair of first auxiliary ruled lines 25A inclined in a substantially V-shape from the tip end on both sides in the flow direction toward the base end. Further, the engagement convex portion 31 is formed with a second auxiliary ruled line 25B extending from the intersection of the pair of first auxiliary ruled lines 25A to the finger hooking portion 31B. The first and second auxiliary ruled lines 25A and 25B are general ruled lines.

  The engagement recess 32 is formed to be recessed from the tip end of the top wall 13B toward the base end. The maximum dimension in the flow direction of the engagement recess 32 is set to be longer than the maximum dimension in the flow direction of the engagement protrusion 31 and shorter than the maximum distance between the pair of notches 31A.

(Lock structure)
As shown in FIG. 2, a locking structure 35 is formed on the top wall 13 and the lid wall 14. The lock structure 35 includes four insertion pieces 36, four insertion holes 37, four fixing pieces 38, and four fixing holes 39. The four insertion pieces 36 are continuously provided on both sides in the step direction of the pair of lid walls 14 via insertion ruled lines 26 (general-purpose ruled lines). The four insertion holes 37 and the four fixing pieces 38 are formed near the base end (near the root) of the pair of ceiling walls 13. The four fixing holes 39 are formed in the four insertion pieces 36. The lock structure 35 has a function of fixing the lid wall 14 in a state of being superimposed on the top wall 13. In addition, since four insertion pieces 36 grade | etc., Are a shape which becomes symmetrical to front and rear and right and left, below, one insertion piece 36 grade | etc., Is demonstrated.

  As shown in FIG. 3, the insertion piece 36 is extended outward in the step direction from the tip end side of the step direction end of the lid wall 14. The insertion piece 36 is formed in a substantially rectangular shape in which a front end corner portion is rounded. A fixing hole 39 is formed along the insertion ruled line 26 at the proximal end (base) of the insertion piece 36. The fixing hole 39 is a slit extending in the flow direction at the middle of the insertion ruled line 26. At the central portion of the fixing hole 39, a substantially semicircular finger hook portion 39A is formed to be recessed toward the lid wall 14.

  The insertion hole 37 is a slit extending in the flow direction along the third fold line 23. The insertion hole 37 is formed at a position corresponding to the insertion piece 36 in a state where the lid wall 14 is superimposed on the top wall 13.

  The fixed piece 38 is connected to the center of the side wall 11 in the step direction via a first fixed ruled line 27A. The fixing piece 38 is formed across the side wall 11 and the ceiling wall 13 so as to cross the insertion hole 37. The fixing piece 38 is formed in a substantially rectangular shape in which the end corner portion is rounded. The second fixed ruled line 27B is formed on the fixed piece 38 at a position on the same line as the third bending line 23. The first and second fixed ruled lines 27A and 27B are general ruled lines.

<Corner portion>
As shown in FIG. 2, the four corner abutment portions 15 are extended outward in the flow direction from the position where they enter the both sides of the ceiling wall 13. The four corner abutment portions 15 are arranged in four regions surrounded by the pair of ceiling walls 13 and the pair of lid walls 14. The four corner rests 15 have a function of protecting the four corners C of the content M. In addition, since the four corner abutments 15 have a shape that is symmetrical in the front-rear and left-right directions, one corner abutment 15 will be described below.

  As shown in FIG. 3, the corner rest 15 includes, in order from the top wall 13 side, the top surface protection portion 40, the first side surface protection portion 41, the bottom surface protection portion 42, and the second side surface protection portion 43; Contains.

  The top surface protection unit 40 is a cutting line 45 which is cut inward from the side end in the flow direction of the top wall 13 at a position separated from the third folding curve 23 toward the tip end side of the top wall 13, and It is formed between the end of the folding line 23 and the folding line 50 which extends obliquely toward the tip (butt) of the cutting line 45. That is, the top surface protection portion 40 is formed in a substantially right-angled isosceles triangle with the fold line 50 as an oblique side by cutting the side portion of the top wall 13. The folding line 50 is formed at an angle of about 45 degrees with respect to the third folding line 23.

  The first side surface protection unit 41 is connected to the end (the bottom of the triangle) of the top surface protection unit 40 in the flow direction via the first folding line 51. The first side surface protection portion 41 is formed in a substantially rectangular shape long in the step direction with the first folding line 51 as the long side. The dimension in the flow direction (extension dimension) of the first side surface protection portion 41 is set to be slightly shorter than the extension dimension of the side wall 11. The first folding line 51 is formed at a position slightly offset to the inside of the ceiling wall 13 with respect to the side of the ceiling wall 13 (the extension of the second folding line 22).

  The bottom surface protection portion 42 is connected to an end of the first side surface protection portion 41 in the flow direction via a second folding line 52. The bottom surface protection portion 42 is formed in a substantially square shape with one side of the second folding line 52. The second folding line 52 is formed at a position slightly offset to the inside of the ceiling wall 13 with respect to the extension line of the fourth folding line 24.

  The second side surface protection portion 43 is continuously provided on the side of the lid wall 14 of the bottom surface protection portion 42 via a third folding line 53. The second side surface protection portion 43 is formed in a substantially rectangular shape which is long in the flow direction with the third folding line 53 as the long side. The step size (extension dimension) of the second side protection portion 43 is set to be slightly shorter than the extension dimension of the end wall 12 (or the side wall 11). The third fold line 53 is formed at a position slightly offset from the lid wall 14 with respect to the extension line of the third fold line 23. The tip of the second side surface protection portion 43 does not touch the lid wall 14.

  A substantially square opening (hole) is formed in a range surrounded by the side wall 11, the end wall 12, the first side surface protecting portion 41 and the second side surface protecting portion 43. Further, the folding lines 50 and the first to third folding lines 51 to 53 are lead creases in which a plurality of incisions are formed on the general-purpose ruled line at substantially equal intervals.

[Assembly of packaging box]
Next, with reference to FIG. 1 and FIG. 4 to FIG. 7, a process (assembly operation) of assembling the packaging box 1 and packaging (accommodating) the contents M will be described. FIG. 4 is a perspective view showing a state in which the corner abutting portion 15 is folded. FIG. 5 is an enlarged plan view showing one corner abutment 15 and the like. FIG. 6 is a perspective view showing a state in which the contents M are covered with the top wall 13. FIG. 7 is a perspective view showing a process of fixing the lid wall 14 to the top wall 13. Here, as an example, the case where the worker packages the contents M (seals the packaging box 1) will be described.

  The packaging box 1 is assembled by appropriately bending the blank 5 with the back liner 9C directed upward. First, as shown in FIG. 4, the operator folds the four corner abutment portions 15 (top surface protection portion 40) inward along the fold line 50 to approximately 180 degrees. The four corner rests 15 overlap the inner surfaces of the walls 10 to 13 near the four corners of the bottom wall 10. In the top walls 13A and 13B, the top surface protection portion 40 is folded back to open top surface holes H having a substantially right-angled isosceles triangle shape.

  As shown in FIG. 5, in a state in which the top surface protection portion 40 is folded back along the folding line 50 and superimposed on the inner surface of the top wall 13, the first side surface protection portion 41 performs the third folding of the first folding line 51. It is superimposed on the inner surface of the side wall 11 at a position corresponding to the curve 23. Further, in this state, the bottom surface protection portion 42 is superimposed on the inner surface of the bottom wall 10 at a position where the second folding line 52 corresponds to the first folding line 21, and the second side surface protection portion 43 holds the third folding line 53. It is superimposed on the inner surface of the end wall 12 at a position corresponding to the second fold line 22. In addition, "the position which made each folding line 51-53 correspond to each folding line 21-23" requires that each folding line 51-53 corresponds completely to each folding line 21-23, for example. Instead, it indicates a position where each of the folding lines 51 to 53 and each of the folding lines 21 to 23 are substantially parallel while allowing an error of about several mm.

  Next, as shown in FIGS. 4 and 5, the worker arranges the content M on the bottom wall 10 so as to press the corner abutment portion 15 folded back at the folding line 50 (see FIGS. 4 and 5). See dotted line). Precisely, the worker places the four corners C of the content M on the four bottom protection portions 42 stacked on the bottom wall 10.

  Subsequently, as shown in FIG. 6, the worker bends the pair of side walls 11 upward along the first fold line 21 and folds the pair of top walls 13A and 13B inward along the third fold line 23. . At this time, the first side surface protecting portion 41 is bent upward along the second folding line 52, and the top surface protecting portion 40 is bent inward along the first folding line 51. When the top walls 13A and 13B are bent, the fixed piece 38 is separated from the top walls 13A and 13B and relatively protrudes upward.

  Subsequently, the operator aligns the engagement convex portion 31 of the top wall 13A with the engagement concave portion 32 of the top wall 13B, overlaps the front engagement convex portion 31 on the outer surface of the rear top wall 13B, The left and right sides of the ceiling wall 13B are superimposed on the outer surface of the front wall 13A. Then, the tips of the pair of ceiling walls 13A and 13B are in a state of meshing with each other.

  In this state, the pair of side walls 11 is in a posture standing up substantially at right angles to the bottom wall 10, and faces both side surfaces in the front-rear direction of the content M disposed on the bottom wall 10. Further, the pair of top walls 13A and 13B is in a posture substantially parallel to the bottom wall 10, and faces the top surface of the content M disposed on the bottom wall 10. In addition, the pair of ceiling walls 13A and 13B is engaged in the engagement portion 30 and maintained in a state of facing the top surface of the content M. Further, in this state, the bottom protection portion 42 is sandwiched between the bottom wall 10 and the bottom of the corner C of the content M. The first side surface protection portion 41 is sandwiched between the side wall 11 and the side surface in the front-rear direction of the corner portion C of the content M. The top surface protection unit 40 is sandwiched between the top wall 13 and the top surface of the corner C of the content M.

  Next, as shown in FIG. 7, the worker bends the pair of end walls 12 upward along the second fold line 22. At this time, the second side surface protection portion 43 is bent upward along the third folding line 53 (see FIG. 6). Subsequently, the operator bends the insertion piece 36 inward along the insertion ruled line 26 and bends the pair of lid walls 14 inward along the fourth bending line 24. Then, the operator puts the lid wall 14 on the outer surface of the ceiling wall 13 while inserting the insertion piece 36 into the insertion hole 37 of the ceiling wall 13. Next, the operator bends the fixing piece 38 outward in the front-rear direction with the first fixing ruled line 27A and bends it inside in the front-rear direction with the second fixing ruled line 27B, and inserts the fixing piece 38 into the fixing hole 39 of the insertion piece 36. Then, the insertion piece 36 is maintained in the state of being inserted into the insertion hole 37.

  In this state, as shown in FIG. 1, the pair of end walls 12 is in a posture standing up substantially at right angles to the bottom wall 10, and on both side surfaces of the content M disposed on the bottom wall 10. opposite. Further, the pair of lid walls 14 is superimposed on the top wall 13 facing the top surface of the content M, and is fixed to the top wall 13 via the lock structure 35. Moreover, in this state, the second side surface protection portion 43 is sandwiched between the end wall 12 and the side surface of the corner portion C of the content M in the left-right direction. The pair of lid walls 14 closes the four top holes H opened in the top wall 13.

  By the above, the packaging box 1 is sealed and the content M is packaged (see FIG. 1). That is, the assembly operation of the packaging box 1 is completed. Thus, in the state in which the content M is packaged, the four corner rests 15 are bent so as to overlap the inner surfaces of the bottom wall 10, the side wall 11, the end wall 12 and the top wall 13, and the bottom wall 10, the side wall 11, each of the end wall 12 and the top wall 13 and the corner C of the content M to protect the corner C of the content M (see FIG. 1).

[Open packaging box]
Next, the case where the packaging box 1 is opened will be described. The packaging box 1 is opened in the reverse order of the above-described assembling operation. Specifically, the worker places a finger on the fixed piece 38 exposed to the finger hook portion 39A of the lid wall 14, and pulls out the fixed piece 38 from the fixed hole 39 (see FIG. 7). Subsequently, the operator opens the pair of lid walls 14 outward while pulling out the insertion piece 36 from the insertion hole 37 (see FIGS. 6 and 7). Next, the operator places a finger on the finger hook portion 31B (see FIG. 6) of the engagement convex portion 31, and the engagement convex portion 31 is moved inward by the first and second auxiliary ruled lines 25A and 25B (see FIG. 2). Fold it and pull it up. Then, the rear top wall 13B overlapping the outer surface of the front top wall 13A is also lifted together, and the engagement of the pair of top walls 13A and 13B is released. Then, the pair of ceiling walls 13A and 13B is opened outward (see FIG. 4), and the operator can take out the contents M.

  Thus, the opening of the packaging box 1 is completed. In addition, the packaging box 1 is returned to the blank 5 of 1 sheet by returning the four corner | bag contact parts 15 to the state before folding back.

  In the packaging box 1 according to the first embodiment described above, the corner support 15 is continuously provided on the side portion of the top wall 13 in the left-right direction (second direction). According to this configuration, the content M can be packaged by placing the content M on the corner rest portion 15 and the bottom wall 10 superimposed on the inner surface of the bottom wall 10 and the like and appropriately bending the walls 11 to 13 . In this state, since the corner C of the content M is doubly covered by the corner rest 15 and the walls 10 to 13, the corner C of the content M can be appropriately protected. As described above, the structure for protecting the corner C of the content M can be easily formed by the simple procedure of folding the corner support 15 so as to overlap the inner surface of the bottom wall 10 or the like.

  In addition, in the packaging box 1 according to the first embodiment, the corner abutment portion 15 is integrally formed as one blank 5. According to this configuration, compared with the case where the packaging box 1 and the corner rest 15 are separately formed, it is possible to simplify the management regarding the manufacture and storage of the blank 5 (packaging box 1). Furthermore, even after the packaging box 1 is opened, since the corner abutment portion 15 is integrally formed as one blank 5, for example, the blank 5 that has become unnecessary can be expanded and stored in multiple layers. Thereby, the effort concerning collection | recovery of the blank 5 (waste material) which became unnecessary, etc. can be reduced.

  Further, in the packaging box 1 according to the first embodiment, when the corner support 15 is folded back at the folding line 50, the top surface protection portion 40, the first side surface protection portion 41, the bottom surface protection portion 42 and the second side surface protection portion 43 Is overlapped with the top wall 13, the side wall 11, the bottom wall 10 and the end wall 12. According to this configuration, the content M is placed on the bottom surface protection portion 42 and the walls 11 to 13 are appropriately bent, whereby each protection portion 40 to 43 and each wall 10 with respect to the four surfaces of the corner C of the content M The double wall in which ~ 13 overlap can be made to face. Thus, the four corner portions 15 of the content M can be appropriately protected by the four corner rests 15.

  Moreover, according to the packaging box 1 which concerns on 1st Embodiment, the corner reliance part 15 is maintained by the state in which the pair of top walls 13 covered the top surface of the content M via the engaging part 30. The state of facing the corner C of the content M can be maintained.

  In general, when a single corrugated sheet is punched out in the Jacco-type blank 5, the area surrounded by the top wall 13 and the lid wall 14 is often removed because it becomes an unnecessary portion. In this respect, in the packaging box 1 according to the first embodiment, the corner abutment portion 15 is continuously provided on the side of the top wall 13 in the left-right direction (second direction), and is surrounded by the top wall 13 and the lid wall 14 Were placed in the According to this configuration, since the corner abutment portion 15 can be disposed in the region which is generally regarded as an unnecessary portion, the area to be removed from the corrugated cardboard sheet can be reduced. Thereby, the corrugated cardboard sheets can be used without waste, and the discarded corrugated cardboard sheets can be reduced.

  Moreover, according to the packaging box 1 which concerns on 1st Embodiment, since the cover wall 14 overlaps with the top wall 13, covering the top surface hole H opened by folding back the top surface protection part 40 by the cover wall 14 it can. Thereby, the top surface of the content M can be prevented from being exposed from the hole, and the top surface of the content M can be protected, and the appearance of the packaging box 1 can be kept good.

  Further, in the packaging box 1 according to the first embodiment, the lid wall 14 is fixed to the ceiling wall 13 via the lock structure 35. According to this configuration, since the top wall 13 and the lid wall 14 are maintained in the state of covering the top surface of the content M, the state in which the corner abutment portion 15 faces the corner C of the content M is maintained. Can.

  In addition, in the packaging box 1 which concerns on 1st Embodiment, although the corner relieving part 15 was connected in a row with the top wall 13 via the return line 50 which inclined, this invention is not limited to this, It is As the packaging box 1 which concerns on a modification, as shown, for example in FIG. 8, the angle | corner part 16 may be connected in a row via the folding line 54 extended substantially in parallel with 3rd folding curve 23 grade | etc.,. In this case, it is preferable that the corner abutment portion 16 be provided on the side portion of the ceiling wall 13 in a range surrounded by the step line 46 extending in the step direction and the return line 54 extending in the flow direction.

Second Embodiment
Next, the packaging box 2 according to the second embodiment will be described with reference to FIGS. 9 and 10.
FIG. 9 is a plan view showing the blank 6 of the packaging box 2. FIG. 10 is a plan view showing a part of the blank 6 in an enlarged manner. In the following description, components that are the same as or correspond to those of the packaging box 1 according to the first embodiment are given the same reference numerals, and descriptions that are the same as or correspond to the packaging box 1 are omitted.

  In the packaging box 2 (blank 6) according to the second embodiment, the corner abutment portion 17 has a shape different from that of the corner abutment portion 15 of the packaging box 1 according to the first embodiment. In the assembled state, the packaging box 2 has substantially the same shape as the packaging box 1 according to the first embodiment.

<Corner portion>
As shown in FIG. 9, the four corner abutments 17 are extended outward from the flow direction both ends of the ceiling wall 13 in the flow direction, and are surrounded by the pair of ceiling walls 13 and the pair of lid walls 14. It is arranged in four areas. In addition, since the four corner abutments 17 have a shape that is symmetrical in the back and forth and right and left directions, one corner abutment 17 will be described below.

  As shown in FIG. 10, the corner rest 17 includes, in order from the top wall 13, the second side protection portion 60, the top surface protection portion 61, the first side protection portion 62, and the bottom surface protection portion 63; Contains.

  The second side surface protection unit 60 is connected to the end of the ceiling wall 13 in the flow direction via the first folding line 71. The second side surface protection portion 60 is formed in a substantially square shape with one side of the first folding line 71. The first folding line 71 is formed at a position slightly offset to the inside of the ceiling wall 13 with respect to the side of the ceiling wall 13 (the extension of the second folding line 22). In addition, the second side surface protection portion 60 has a folding line 70 formed substantially in parallel with the first folding line 71 in the middle in the flow direction (approximately at the center).

  The top surface protection unit 61 is connected to an end of the second side surface protection unit 60 in the flow direction via a second folding line 72. The top surface protection portion 61 is formed in a substantially square shape with one side of the second folding line 72. The top surface protection portion 61 is formed to protrude outward in the flow direction more than the first side surface protection portion 62 and the bottom surface protection portion 63.

  The first side surface protection portion 62 is continuously provided on the end wall 12 side of the top surface protection portion 61 via a third folding line 73. The first side surface protection portion 62 is continuously provided at a position close to the second folding line 72 side of the top surface protection portion 61 so as not to interfere with the insertion piece 36. The first side surface protection portion 62 is formed in a substantially rectangular shape narrower in the flow direction than the top surface protection portion 61. The dimension in the step direction (extension dimension) of the first side surface protection portion 62 is set to be substantially the same as the extension dimension of the side wall 11. The third fold line 73 is formed at a position slightly offset to the bottom wall 1 side from the extension line of the third fold line 23.

  The bottom surface protection portion 63 is continuously provided on the end wall 12 side of the first side surface protection portion 62 via a fourth folding line 74. The bottom surface protection portion 63 is formed in a substantially rectangular shape slightly long in the flow direction with the fourth folding line 74 as the long side. The bottom surface protection portion 63 is formed in a substantially rectangular shape by cutting the side end portion in the step direction of the lid wall 14 into a substantially U shape. The dimension (extension dimension) in the step direction of the bottom face protection portion 63 is set to be substantially the same as the extension dimension of the end wall 12 (or the side wall 11). The fourth fold line 74 is formed substantially colinear with the side of the lid wall 14 (the extension of the first fold line 21).

  A substantially square opening (hole) is formed in a range surrounded by the side wall 11, the end wall 12, the base end portion of the lid wall 14, the first side surface protection portion 62, and the second side surface protection portion 60. . Further, the folding line 70 and the first to fourth folding lines 71 to 74 are lead lines, respectively.

[Assembly of packaging box]
Next, with reference to FIGS. 11 to 13, a process (assembly operation) of assembling the packaging box 2 and packaging (accommodating) the contents M will be described. FIG. 11 is a perspective view showing a state in which the corner abutment portion 17 is folded. FIG. 12 is an enlarged plan view showing one corner abutment 17 and the like. FIG. 13 is a plan view showing a part of the state in which the contents M are covered with the top wall 13. Here, as an example, the case where the worker packages the contents M (seals the packaging box 1) will be described.

  First, as shown in FIG. 11, the operator folds the second side surface protection portions 60 of the four corner rest portions 17 inward along the fold line 70 at approximately 180 degrees. The four corner rests 17 overlap the inner surface of each of the walls 10 to 13 near the four corners of the bottom wall 10.

  As shown in FIG. 12, in a state in which the second side surface protection unit 60 is folded back along the folding line 70 and doubled, the top surface protection unit 61 sets the second folding line 72 to the first folding line 71. It is superimposed on the inner surface of the ceiling wall 13 at a corresponding position. In addition, the first side surface protection portion 62 is superimposed on the inner surface of the side wall 11 at a position where the third folding line 73 corresponds to the third folding line 23, and the bottom surface protection portion 63 has the fourth folding line 74 as the first folding line 21. Are superimposed on the inner surface of the bottom wall 10 at a position corresponding to.

  Next, as shown in FIG. 11 and FIG. 12, the operator places four corners C of the content M on the four bottom surface protection portions 63, and then the side wall 11 and the top wall 13 to wrap the content M. Bend. At this time, the first side surface protecting portion 62 is bent upward along the fourth folding line 74, and the top surface protecting portion 61 is bent inward along the third folding line 73. Subsequently, the worker engages the pair of ceiling walls 13A and 13B via the engagement portion 30 (see FIG. 6).

  In this state, as shown in FIG. 13, the pair of side walls 11 faces both side surfaces of the content M in the front-rear direction, and the pair of top walls 13A and 13B engage with each other and face the top surface of the content M Do. Further, in this state, the bottom protection portion 63 is sandwiched between the bottom wall 10 and the bottom of the corner C of the content M. The first side surface protection portion 62 is sandwiched between the side wall 11 and the side surface of the corner portion C of the content M in the front-rear direction. The top surface protection unit 61 is sandwiched between the top wall 13 and the top surface of the corner C of the content M. The double second side surface protection portion 60 protrudes outward in the left-right direction (see FIG. 13).

  Next, the operator folds the doubly folded second side protection portion 60 downward along the first folding line 71 and the second folding line 72. Subsequently, the operator bends the end wall 12 and the lid wall 14 so as to wrap the ceiling wall 13 and the double second side protection portion 60 etc., and fixes the lid wall 14 to the ceiling wall 13 via the lock structure 35. .

  In this state, the pair of end walls 12 oppose both side surfaces of the content M in the left-right direction. Further, the double second side surface protection portion 60 is sandwiched between the end wall 12 and the side surface of the corner portion C of the content M in the left-right direction.

  Thus, the assembly operation of the packaging box 2 is completed.

  According to the packaging box 2 according to the second embodiment described above, it is easy to protect the corner C of the content M by the simple procedure of folding the corner abutment 17 so as to overlap the inner surface of the bottom wall 10 or the like. The same operation and effect as the packaging box 1 according to the above-described first embodiment can be obtained.

  Moreover, in the packaging box 2 which concerns on 2nd Embodiment, in the state by which the top surface protection part 61 was arrange | positioned between the top wall 13 and the top surface of the content M, the 2nd side surface protection part 60 which became double was carried out. Is folded along the first folding line 71 and the second folding line 72 to be disposed between the side wall of the corner C of the content M in the left-right direction and the end wall 12. According to this configuration, the triple wall in which the end wall 12 and the double second side surface protection portion 60 overlap can be opposed to the side surface in the longitudinal direction (left and right direction) of the corner C of the content M . Thereby, the corner C of the content M can be protected appropriately. In addition, since the content M stored in the packaging box 2 is often transported and stored with the longitudinal direction (left and right direction) facing up and down, the side surface in the left and right direction which is the short side of the content M Often subjected to large loads. In the packaging box 2, the triple wall can be opposed to the side surface in the left-right direction of the corner portion C of the content M to which the load is easily applied. Thereby, the corner C of the content M can be protected from a large load.

  In addition, in the packaging boxes 1 and 2 which concern on 1st and 2nd embodiment (a modification is included. The following is the same.), Although four cornering parts 15-17 were provided, this invention is not limited to this . One or more corner application parts 15 to 17 may be provided in accordance with the shape of the content M (for example, when the corner part C is formed only on one side).

  Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the pair of ceiling walls 13A and 13B are provided in a row with the pair of side walls 11, but the present invention is not limited to this. For example, one top wall 13 may be connected to at least one tip of the pair of side walls 11. Similarly, one lid wall 14 may be connected to at least one tip of the pair of end walls 12.

  Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the extension dimension of the front top wall 13A is set smaller (shorter) than the extension dimension of the rear top wall 13B. The invention is not limited to this. For example, the extension dimension of the top wall 13A may be set to be longer than the extension dimension of the top wall 13B, or may be set to be the same as the extension dimension of the top wall 13B. Also, similarly, the pair of lid walls 14 may be set to different extension dimensions.

  Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the top wall 13 is provided continuously to the side wall 11 and the lid wall 14 is provided continuously to the end wall 12, but the present invention is limited thereto I will not. For example, the top wall 13 may be connected to the end wall 12 (first side wall), and the lid wall 14 may be connected to the side wall 11 (second side wall).

  Moreover, in the packaging boxes 1 and 2 according to the first and second embodiments, the engaging portion 30 for engaging the pair of ceiling walls 13 and the lock structure 35 for fixing the lid wall 14 to the ceiling wall 13 are provided. However, the engagement portion 30 and the lock structure 35 may be omitted.

  Moreover, in the packaging boxes 1 and 2 which concern on 1st and 2nd embodiment, although the cover wall 14 was connected in a row with the end wall 12, the cover wall 14 may be abbreviate | omitted. In this case, since the lock structure 35 is omitted, it is preferable to wrap a binding band or the like so that the end wall 12 and the top wall 13 do not open.

  Moreover, in the packaging boxes 1 and 2 according to the first and second embodiments, the corner rests 15 to 17 folded back at the folding lines 50, 54, 70 are not fixed to the bottom wall 10, the ceiling wall 13 or the like However, the present invention is not limited to this. For example, the corner rests 15 to 17 folded at the fold lines 50, 54, 70 may be bonded (fixed) to the bottom wall 10, the ceiling wall 13 or the like via an adhesive or the like.

  Moreover, in the packaging boxes 1 and 2 which concern on 1st and 2nd embodiment, although the 1st-4th bending lines 21-24 graded were general purpose ruled lines, this invention is not limited to this. For example, the first to fourth fold lines 21 to 24 and the like may be formed with a lead line, a perforation line in which a plurality of incisions are arranged at substantially equal intervals, or a half cut line cut to about half the thickness of a cardboard sheet Any line may be used to fold the cardboard sheet so that it points to (not shown). In addition, the folding lines 50 and 70 and the respective folding lines 51 to 53, 71 to 74 were lead creases. Not limited to this, a perforated line, a half score line or a corrugated sheet is linear in the thickness direction from the front liner 9B side. As long as it is a line for bending a corrugated-cardboard sheet so that the front liner 9B may be turned inwards, it may be any line (not shown), such as a reverse crease formed by crushing.

  Further, the sizes (dimensions) and the like of the packaging boxes 1 and 2 according to the present embodiment are merely an example, and can be appropriately changed according to the size of the content M.

  Moreover, although the packaging boxes 1 and 2 which concern on this embodiment were formed with the paper-made double-sided corrugated sheet, this invention is not limited to this. For example, the corrugated sheet may be a single-sided corrugated sheet in which a liner is attached to one side of the inner core 9A, or a double-sided corrugated sheet in which a single-sided corrugated sheet is bonded to a double-sided corrugated sheet. In addition, for example, the packaging boxes 1 and 2 may be formed of a cardboard, a plate made of resin, or the like, instead of the cardboard sheet made of paper.

  The description of the above embodiment shows one aspect of the packaging box according to the present invention, and the technical scope of the present invention is not limited to the above embodiment.

1, 2 Packaging box 10 Bottom wall 11 Side wall (first wall)
12 end wall (second wall)
13A, 13B (13) ceiling wall 14 lid wall 15, 16 and 17 corner abutment portion 21 first fold curve 22 second fold curve 23 third fold curve 30 engagement portion 35 lock structure 45 cut line 40, 61 top surface Protection part 41, 62 1st side protection part 42, 63 Bottom protection part 43, 60 2nd side protection part 50, 54, 70 Folded line 51, 71 1st folding line 52, 72 2nd folding line 53, 73 3rd Folding line 74 fourth folding line C corner M content

Claims (7)

A bottom wall (10) on which a plate-like or hexahedrally formed content (M) is disposed;
A pair of first walls (11) continuous with both end portions of the bottom wall in the first direction and facing both side surfaces of the contents disposed in the bottom wall in the first direction;
A pair of second walls (12) which are continuously provided at both ends of the bottom wall in the second direction crossing the first direction, and which are disposed on the bottom wall and are opposed to both side surfaces of the contents in the second direction. ,
A top wall (13) connected to at least one tip end of the pair of first walls and facing the top surface of the contents disposed on the bottom wall;
The bottom wall, the first wall, the second wall, and the inner wall of the top wall are bent so as to be continuous with the side portion in the second direction of the top wall, and the bottom wall, the first wall An angular contact portion (15, 16, 17) disposed between each of the second wall and the ceiling wall and the corner (C) of the content to protect the corner of the content; A packaging box characterized by having. The pair of first walls are connected to both ends of the bottom wall in the first direction via first bending lines (21).
The pair of second walls are connected to both ends of the bottom wall in the second direction via a second fold line (22),
The top wall is connected to the tip of the first wall via a third fold line (23).
The corner portion (15) is
A cutting line (45) cut inward from the second direction side end of the ceiling wall at a position spaced apart from the third folding curve to the front end side of the ceiling wall; A top surface protection portion (40) formed between the end portion and a folding line (50) obliquely extending toward the tip of the perforation line;
A first side surface protection unit (41) connected to an end of the top surface protection unit in a second direction via a first fold line (51);
A bottom protection portion (42) continuously connected to an end of the first side protection portion in the second direction via a second folding line (52);
And a second side protection portion (43) connected to the side of the second wall of the bottom surface protection portion via a third fold line (53),
In a state in which the top surface protection portion is folded back along the folding line and superimposed on the inner surface of the top wall, the first side surface protection portion is a position where the first folding line corresponds to the third folding line At the position where the second folding line corresponds to the first folding line, and the second side protecting section is the second side protecting section. The packaging box according to claim 1, wherein a third folding line is superimposed on the inner surface of the second wall at a position corresponding to the second folding line. The pair of first walls are connected to both ends of the bottom wall in the first direction via first bending lines (21).
The pair of second walls are connected to both ends of the bottom wall in the second direction via a second fold line (22),
The top wall is connected to the tip of the first wall via a third fold line (23).
The corner portion (17) is
A second side surface protection is connected to an end of the ceiling wall in the second direction via a first fold line (71), and has a fold line (70) formed in parallel with the first fold line at an intermediate portion Part (60),
A top surface protection portion (61) connected to an end of the second side surface protection portion in the second direction via a second folding line (72);
A first side protection portion (62) continuously provided on the second wall side of the top surface protection portion via a third folding line (73);
And a bottom protection portion (63) connected to the side of the second wall of the first side protection portion via a fourth folding line (74),
In a state in which the second side surface protection portion is folded back along the folding line to form a double, the top surface protection portion is the top wall at a position where the second folding line corresponds to the first folding line. And the first side protection portion is stacked on the inner surface of the first wall at a position where the third folding line corresponds to the third folding line, and the bottom protection portion is the fourth folding A line is superimposed on the inner surface of the bottom wall at a position corresponding to the first fold line,
In the state where the top surface protection portion is disposed between the top wall and the top surface of the contents, the doubled second side surface protection portion includes the first folding line and the second folding line. The packaging box according to claim 1, wherein the packaging box is folded along the second direction and disposed between the second side of the corner of the content and the second wall. A pair of the top walls are provided in a row at the tip of the pair of first walls,
4. The four corner abutments for protecting four corners of the content are provided in a row on both side portions in the second direction of the pair of ceiling walls. The packaging box described in.   The pair of ceiling walls is formed with an engaging portion (30) for engaging the pair of ceiling walls with each other to maintain the ceiling surface facing the top surface of the contents. The packaging box as described in 4.   A cover wall (14) continuous with the tip of at least one of the pair of second walls and overlapping the top wall facing the top surface of the contents is further provided. The packaging box as described in any one of to 5.   The packaging box according to claim 6, wherein the ceiling wall and the lid wall are formed with a lock structure (35) for fixing the lid wall in a state of being superimposed on the ceiling wall.

Images