JP2019137409A - Packing box - Google Patents

Abstract

To provide a packing box capable of automatically inclining inclination pieces outward of side walls when lid walls are opened.SOLUTION: A packing box 1 has upper flaps, 30-33, connected to side walls, 10-13, respectively via ridge bending lines L3, and inclination pieces 40, each formed between a pair of break lines 40L. The inclination piece 40 includes a side wall part 40A formed on the side walls 10-13, an upper flap part 40B formed on the upper flaps 30-33, an upper flap bending line 51L formed at the base of upper flap 40B, and a middle bending line 60 for lowering stiffness of the upper flap part 40B. The side wall part 40A inclines outward from the side walls 10-13 while pushing up the middle bending line 60, simultaneously with the movement to bend the upper flaps 30-33 outward from the side walls 10-13 at the ridge bending line L3. The upper flap part 40B is mountain-folded at the middle bending line 60 while being valley-folded at the upper flap bending line 51L.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a packaging box.

  2. Description of the Related Art A packaging box that can easily take out contents is known.

  For example, in the packaging box with an open lock described in Patent Document 1, a lock piece is provided between two cut lines straddling the fold line of the side plate and the cover plate. Overhangs and notches are provided on both side edges of the side piece, which is the side plate portion of the lock piece. A base crease line is provided at the base end of the lid piece portion which is the lid plate portion of the lock piece. When opening the packaging box with the open lock, the user opens the cover plate and turns it back to the outside of the side plate, and then tilts the lock piece with the side piece and the cover piece overlapped with the base fold line as a hinge. . Then, the overhanging portion of the side piece portion is engaged with the side edge of the extraction hole of the lid piece portion, and the lid plate is engaged with the cutout portion. As a result, the cover plate is held in an open state, and a gap is generated between the lock piece and the article, so that the article can be easily taken out.

Japanese Patent No. 5189414

  However, in the above-described packaging box with an open lock, since it is necessary to perform an operation of folding the lock piece outward after the operation of folding the lid plate, for example, a user who does not know how to use the lock piece properly uses the lock piece. And the article could not be easily removed from the packaging box. In addition, for example, it may be possible to print the usage of the lock piece on the packaging box and show it to the user. However, in this case, there is a problem in that extra cost is required to print the usage.

  In order to solve the above-described problems, the present invention provides a packaging box that can automatically tilt a tilting piece to the outside of a side wall by opening a lid wall.

  In order to achieve the above-described object, a packaging box according to the present invention includes a pair of side walls, a lid wall continuously provided on the side wall via a ridge line folding curve, and a pair of lines extending across the ridge line folding curve. A tilt piece formed between the cut lines, the tilt piece including a side piece formed on the side wall, a lid piece formed on the lid wall, and the ridge folding. A lid piece folding curve formed in parallel to the ridge portion folding curve on the base end side of the lid piece portion opposite to the side piece portion across the curve, and the ridge portion folding curve and the lid piece An intermediate fold portion that is formed in the lid piece portion between the folding line and reduces the rigidity of the lid piece portion, and opens the lid wall outside the side wall with the ridge folding curve as a fulcrum. In conjunction with the operation, the side piece portion falls toward the outside of the side wall while pushing up the intermediate fold portion, and the lid piece portion is at the intermediate fold portion. While being folded is a valley fold in the lid Kataori curve.

  In this case, it is preferable that the side wall and the lid wall are formed of a corrugated cardboard sheet, and the intermediate fold portion is a corrugated area obtained by squashing the corrugated cardboard sheet in the thickness direction.

  In other cases, the side wall and the lid wall are formed of a corrugated cardboard sheet, and the intermediate fold portion is a reverse ruled line in which the corrugated cardboard sheet is linearly crushed in the thickness direction from the front side, and the corrugated cardboard sheet is linear in the thickness direction. A plurality of cut lines on a cutting line cut in a thickness direction, a plurality of cut lines in which the corrugated cardboard sheet is cut in the thickness direction and arranged linearly at intervals, and a ruled line in which the cardboard sheet is crushed in a straight line in the thickness direction It is preferable that it is an intermediate folding line constituted by a lead ruled line arranged at intervals or a half cut line obtained by cutting the corrugated cardboard sheet linearly from the back side to the middle in the thickness direction.

  In this case, it is preferable that the intermediate fold portion is formed by forming the intermediate fold curve in a stepped region where the cardboard sheet is crushed in the thickness direction.

  In this case, the stepped region is located at a position spaced from the ridge folding curve and the lid piece folding curve, and 1/3 or more of the interval between the ridge folding curve and the lid piece folding curve. It is preferably formed in the following range.

  In these cases, the tilting piece is a side piece that is formed in parallel to the ridge part fold curve on the base end side of the side piece part that is opposite to the lid piece part across the ridge part fold curve. In addition to a folding curve, the side piece moves toward the outside of the side wall using the side side folding curve as a fulcrum in conjunction with the operation of opening the lid wall outside the side wall using the ridge folding curve as a fulcrum. It is preferable to collapse.

  In this case, it is preferable that the pair of cut lines are inclined so as to approach each other from the side wall toward the lid wall.

  In other cases, it is preferable that the pair of cut lines are inclined so as to be separated from the side wall toward the lid wall.

  According to the present invention, the tilting piece can be automatically tilted to the outside of the side wall by opening the lid wall.

It is a perspective view which shows the packaging box which concerns on one Embodiment of this invention. It is a top view which shows the blank of the packaging box which concerns on one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on one Embodiment of this invention. It is IV-IV sectional drawing of FIG. It is a perspective view which shows the process in which the content is accommodated in the packaging box which concerns on one Embodiment of this invention. It is a perspective view which shows the process of taking out the contents from the packaging box which concerns on one Embodiment of this invention. It is VII-VII sectional drawing of FIG. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 1st modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 2nd modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 3rd modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 4th modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 5th modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 6th modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 7th modification of one Embodiment of this invention. It is a top view which expands and shows the tilting piece etc. of the packaging box which concerns on the 8th modification of one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawing, “Fr” indicates “front”, “Rr” indicates “rear”, “L” indicates “left”, “R” indicates “right”, and “U” indicates “ “Up” indicates “D” indicates “Down”. The front-rear direction is orthogonal (intersect) to the left-right direction (longitudinal direction), and the upper-lower direction is orthogonal (intersect) to the front-rear direction and the left-right direction. In this specification, terms indicating directions and positions are used, but these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

  With reference to FIG. 1 thru | or FIG. 4, the structure of the packaging box 1 which concerns on one Embodiment is demonstrated. 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 tilting piece 40 and the like of the packaging box 1. 4 is a cross-sectional view taken along the line IV-IV in FIG.

[Outline of the packaging box]
As shown in FIG. 1, the packaging box 1 is formed in the substantially rectangular parallelepiped shape long in the left-right direction. The packaging box 1 is an A-type box that is sealed by closing the upper surface and the lower surface of the substantially square cylindrical peripheral wall 1W. In the packaging box 1, for example, two contents M arranged in the front-rear direction are accommodated (see FIG. 5). The contents M are formed in a substantially rectangular parallelepiped shape and are accommodated with almost no gap between the inner peripheral surface of the packaging box 1 (see FIG. 6).

  The packaging box 1 is formed by assembling the blank 5 shown in FIG. The blank 5 is formed by punching out a piece of paper cardboard sheet with a punching die or the like. 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) are bonded to a corrugated center 9A. FIG. 2 shows the front liner 9B side (the outer surface side of the packaging box 1). In this specification, a direction parallel to the corrugated sheet 9 </ b> A is referred to as a “step direction”, and a direction orthogonal to the step direction is referred to as a “flow direction”. In the drawing, “X” indicates “stage direction”, and “Y” indicates “flow direction”. Further, in this specification, “upper (top)”, “lower (bottom)” and similar terms refer to the upper (top), the lower (bottom), and the same when the packaging box 1 is assembled (assembled state). It refers to a similar concept.

[blank]
As shown in FIG. 2, the blank 5 includes a pair of first side walls 10, 11, a pair of second side walls 12, 13, a passage piece 14, a pair of lower inner flaps 20, 21, and a pair of lower walls. Outer flaps 22 and 23, a pair of upper and inner flaps 30 and 31, and a pair of upper and outer flaps 32 and 33 are provided.

<First side wall, second side wall>
The 1st side wall 10, the 2nd side wall 12, the 1st side wall 11, the 2nd side wall 13, and the passage piece 14 are located in a line from the flow direction one side to the other in this order. The pair of first side walls 10 and 11 and the pair of second side walls 12 and 13 are alternately connected via a vertical ridge folding line L1 extending in the step direction. The first side walls 10 and 11 and the second side walls 12 and 13 are formed in a substantially rectangular shape having substantially the same dimensions in the step direction. The first side walls 10 and 11 are formed narrower in the flow direction than the second side walls 12 and 13. The passage piece 14 is connected to the other end portion in the flow direction of the second side wall 13 via a vertical ridge folding line L1. The second side walls 12 and 13 may be formed narrower in the flow direction than the first side walls 10 and 11.

<Lower inner flap, lower outer flap>
The pair of lower inner flaps 20 and 21 are connected to one end (lower end) in the step direction of the pair of first side walls 10 and 11 via a lower ridge folding line L2 extending in the flow direction. The lower inner flaps 20 and 21 are formed in a substantially rectangular shape having substantially the same width as the flow direction dimension of the first side walls 10 and 11. The dimension in the step direction (extension dimension) of the lower inner flaps 20 and 21 is set to be approximately half of the dimension in the flow direction of the first side walls 10 and 11. The pair of lower outer flaps 22 and 23 are connected to one end (lower end) in the step direction of the pair of second side walls 12 and 13 via the lower ridge folding line L2. The lower outer flaps 22 and 23 are formed in a substantially rectangular shape having substantially the same width as the flow direction dimension of the second side walls 12 and 13. The dimension in the step direction (extension dimension) of the lower outer flaps 22 and 23 is substantially the same as the extension dimension of the lower inner flaps 20 and 21.

<Upper and lower flaps>
A pair of upper and inner flaps 30 and 31 as an example of a lid wall are connected to the other end (upper end) in the step direction of the pair of first side walls 10 and 11 via an upper ridge folding line L3 extending in the flow direction. It is installed. The pair of upper and outer flaps 32 and 33 as an example of the lid wall are connected to the other end in the step direction (upper end) of the pair of second side walls 12 and 13 via the upper ridge folding line L3. Yes. The upper inner flaps 30 and 31 are formed in substantially the same shape as the lower inner flaps 20 and 21, and the upper and outer flaps 32 and 33 are formed in substantially the same shape as the lower outer flaps 22 and 23.

  In addition, the vertical ridge part fold curve L1, the lower ridge part fold curve L2, and the upper ridge part fold curve L3 are general-purpose ruled lines in which a corrugated cardboard sheet is crushed linearly in the thickness direction from the back liner 9C side. These folding lines L1 to L3 have a function of bending the cardboard sheet so that the back liner 9C faces inward. Further, the packaging box 1 is folded by folding the first side wall 10 and the second side wall 13 along the longitudinal ridge folding curve L1, and bonding the passage piece 14 to the inner surface of the first side wall 10 with an adhesive. Shipped in state. As the adhesive, for example, a hot melt adhesive, a synthetic resin emulsion adhesive, a double-sided tape, or the like can be used.

<Tilt piece>
As shown in FIG. 2, this packaging box 1 (blank 5) is provided with four tilting pieces 40 for forming a space S into which a user puts a hand (finger) when taking out the contents M. . The four tilting pieces 40 are formed across the four side walls 10 to 13 and the upper four flaps 30 to 33. A pair of these tilting pieces 40 are formed at positions close to the second side wall 12 in the pair of first side walls 10, 11, etc., and close to the first side wall 11 in the pair of second side walls 12, 13, etc. A pair is formed at the position. That is, the four tilting pieces 40 are formed as a pair on the left and right at the upper rear side of the packaging box 1, and are formed as a pair on the front right and rear on the upper right side of the packaging box 1 (see FIGS. 1 and 4). Since the four tilting pieces 40 have the same shape, only one tilting piece 40 formed on the first side wall 10 and the upper inner flap 30 will be described below.

  As shown in FIG. 3, the tilting piece 40 is formed between a pair of cut lines 40 </ b> L extending perpendicularly (crossing) to the upper ridge folding line L <b> 3 at the first side wall 10 and the upper inner flap 30. . The pair of cut lines 40L extend in parallel along the step direction so as to cross the upper ridge folding curve L3 with an interval in the flow direction. The pair of cut lines 40L are cutting lines obtained by cutting the corrugated cardboard sheet linearly in the thickness direction.

  The tilting piece 40 includes a side piece portion 40A and a lid piece portion 40B. The side piece 40 </ b> A is formed on the first side wall 10, and the lid piece 40 </ b> B is formed on the upper inner flap 30. The side piece 40A and the lid piece 40B are connected to each other via an upper ridge folding line L3.

(Side piece, lid piece)
The side piece 40A and the lid piece 40B are formed in a substantially rectangular shape having substantially the same dimensions in the flow direction. Specifically, the side piece portion 40A is formed in a rectangular shape in which the dimension in the flow direction (the interval between the pair of cut lines 40L) is slightly longer than the dimension in the step direction. The lid piece 40B is formed in a rectangular shape whose dimension in the flow direction is slightly shorter than that in the step direction. The dimension in the step direction of the lid piece 40B is set to approximately half of the extension dimension of the upper inner flap 30. The dimension in the step direction of the side piece 40A is set slightly shorter than the dimension in the step direction of the lid piece 40B.

(Side fold curve, lid fold curve)
On the base end side of the side piece portion 40A that is opposite to the lid piece portion 40B across the upper ridge portion fold curve L3, a side piece fold curve 50L is formed in parallel with the upper ridge portion fold curve L3. The side fold curve 50L is a general ruled line connecting the ends of the pair of cut lines 40L in the first side wall 10. A lid piece folding curve 51L is formed in parallel to the upper ridge folding curve L3 on the base end side of the lid piece 40B that is opposite to the side piece 40A across the upper ridge folding curve L3. The lid piece folding curve 51L is a general ruled line that connects the ends of the pair of cut lines 40L in the upper inner flap 30. The side piece 40A is connected to the first side wall 10 via a side piece folding curve 50L, and the lid piece 40B is connected to the upper inner flap 30 via a lid piece folding curve 51L. That is, the tilting piece 40 is bridged between the side piece folding curve 50L and the lid piece folding curve 51L.

(Intermediate fold part)
In the lid piece portion 40B, an intermediate fold portion 60 is formed between the upper ridge portion folding curve L3 and the lid piece folding curve 51L. The intermediate fold portion 60 forms an intermediate fold curve 60B in the stepped crushing region 60A, and reduces the rigidity of the lid piece portion 40B (corrugated cardboard sheet). The intermediate fold portion 60 is configured to lower (weaken) the rigidity of the corrugated cardboard sheet than the folding lines L1 to L3 made of general-purpose ruled lines.

  As shown in FIG. 4, the corrugated area 60A is an area in which the corrugated cardboard sheet (lid piece portion 40B) is compressed in the thickness direction from the back liner 9C side to crushed the shin 9A. The thickness of the stepped region 60A is formed thinner than the thickness of other parts (excluding general ruled lines). As shown in FIG. 3, the stepped region 60A is near the center of the interval between the upper ridge folding curve L3 and the lid piece folding curve 51L (specifically, about several mm from the center of the upper ridge folding curve L3). (Position shifted to the side). The stepped region 60A is a position separated from the upper ridge folding curve L3 and the lid piece folding curve 51L, and is about ½ of the interval (D) between the upper ridge folding curve L3 and the lid piece folding curve 51L. Formed in the range. Further, the stepped region 60A is formed in a band shape that crosses the lid piece 40B in the flow direction. In the drawing, the stepped region 60A (the portion where the middle shin 9A is crushed) is hatched.

  As shown in FIG. 3, the intermediate folding line 60 </ b> B is a cutting line obtained by cutting the corrugated cardboard sheet (lid piece part 40 </ b> B) linearly in the thickness direction. The intermediate folding line 60B is formed in a state extending in the flow direction at a substantially central portion of the stepped region 60A. The intermediate folding line 60B is formed at a position spaced from the pair of cut lines 40L and has a length that is approximately ¼ of the dimension in the flow direction of the lid piece 40B.

[Assembly of packaging box]
Next, with reference to FIG. 1 and FIG. 5, the process (assembly operation) etc. which assemble the folded packaging box 1 are demonstrated. FIG. 5 is a perspective view showing a process of storing the contents M in the packaging box 1. The packaging box 1 may be assembled manually by an operator, or may be assembled automatically or semi-automatically by a box making machine. Here, the case where an operator assembles the packaging box 1 will be described as an example.

  The operator bends the pair of first side walls 10 and 11 and the pair of second side walls 12 and 13 substantially vertically at the longitudinal ridge folding line L1. Then, a pair of 1st side walls 10 and 11 opposes the left-right direction, and a pair of 2nd side walls 12 and 13 opposes the front-back direction (refer FIG. 5). Thereby, the surrounding wall 1W which opened the upper and lower both end surfaces is formed.

  Next, the operator bends the pair of lower inner flaps 20 and 21 along the lower ridge folding curve L2 to the inside of the peripheral wall 1W, and then sets the pair of lower outer flaps 22 and 23 to the lower ridge folding curve L2. Along the inner wall 1W along the inner wall (see FIG. 1). An operator affixes an adhesive tape (not shown) along the abutting portion at the tip of the pair of lower and outer flaps 22 and 23. Thereby, the lower surface opening of the surrounding wall 1W is obstruct | occluded, and the bottom face of the packaging box 1 is formed (refer FIG. 1).

  Next, as shown in FIG. 5, the worker puts two contents M into the inside from the upper surface opening of the peripheral wall 1 </ b> W. The contents M are accommodated in a state of being substantially in contact with the inner surfaces of the side walls 10 to 13. That is, the contents M are densely accommodated inside the packaging box 1 (circumferential wall 1W).

  Next, the operator bends the upper and inner flaps 30 and 31 along the upper ridge folding curve L3 to the inside of the peripheral wall 1W, and then the upper and outer flaps 32 and 33 along the upper ridge folding curve L3. (See FIG. 1). An operator affixes an adhesive tape along the abutting portion at the tip of the pair of upper and outer flaps 32 and 33. Thereby, the upper surface opening of 1 W of surrounding walls is obstruct | occluded, and the top | upper surface of the packaging box 1 is formed (refer FIG. 1). In the above description, the pair of lower and outer flaps 22 and 23 and the pair of upper and outer flaps 32 and 33 are fixed to the peripheral wall 1W by the adhesive tape. However, the present invention is not limited to this. It may be adhered to the surfaces of the flaps 20, 21, 30, 31.

  Thus, the assembly work of the packaging box 1 is completed. That is, the packaging box 1 is sealed (see FIG. 1).

[Opening the packaging box and taking out the contents]
Next, with reference to FIG. 6 and FIG. 7, the opening operation | work of the packaging box 1 is demonstrated. FIG. 6 is a perspective view showing a process of taking out the contents M from the packaging box 1. 7 is a cross-sectional view taken along the line VII-VII in FIG.

  The user peels off (or tears) the adhesive tape, opens (rises) the pair of upper and outer flaps 32 and 33 and the pair of upper and inner flaps 30 and 31, and exposes the upper surface of the contents M.

  By the way, as described above, since the contents M are densely accommodated inside the peripheral wall 1W, the user can put a hand (finger) between the contents M and the inner peripheral surface of the peripheral wall 1W. There is no gap. In this state, since the user cannot grasp the contents M accommodated in the packaging box 1, it is difficult to take out the contents M. Therefore, in the packaging box 1 according to the present embodiment, the tilting piece 40 is tilted to the outside of the side walls 10 to 13 in conjunction with the operation of opening the upper flaps 30 to 33 to the outside of the side walls 10 to 13, and the contents M And a gap between the inner wall of the peripheral wall 1W.

  As shown in FIG. 6, the user opens the upper flaps 30 to 33 on the outer sides of the side walls 10 to 13 with the upper ridge folding line L3 as a fulcrum. Precisely, the user bends the upper flaps 30 to 33 to the outside of the peripheral wall 1W so that the outer surfaces of the upper flaps 30 to 33 and the outer surfaces of the side walls 10 to 13 are substantially perpendicular to each other. In addition, it is not necessary to bend all the upper flaps 30 to 33 to the outside of the peripheral wall 1 </ b> W, and it is only necessary to bend at least one of the upper flaps 30 to 33. In addition, since the action of the four tilting pieces 40 is the same, the action of one tilting piece 40 formed on the first side wall 10 and the upper inner flap 30 will be described below.

  As shown in FIG. 7, when the upper inner flap 30 is opened to the outside of the first side wall 10, the side piece portion 40 </ b> A is interlocked with the operation of opening the upper inner flap 30, with the side piece folding curve 50 </ b> L as a fulcrum. 1 falls toward the outside of the side wall 10. That is, the side piece 40A is mountain-folded along the side piece folding curve 50L. At this time, the side piece portion 40 </ b> A falls while pushing up the intermediate fold portion 60 having the lowest rigidity in the tilting piece 40. Then, in conjunction with the operation of opening the upper inner flap 30, the lid piece portion 40B is folded at the lid piece folding curve 51L while being folded at the intermediate fold portion 60. Further, the side piece 40A and the lid piece 40B are not folded at the upper ridge folding line L3, and the tip side of the lid piece 40B (between the intermediate folding curve 60B and the upper ridge folding curve L3) is a side piece. It falls with the part 40A.

  As described above, the tilting piece 40 is bent outside the first side wall 10 while being bent into a substantially triangular shape having the side piece folding curve 50L, the lid piece folding curve 51L, and the intermediate folding portion 60 (intermediate folding curve 60B) as vertices. Fall down. Therefore, since the side piece 40A falls away from the content M, a space S is formed between the side piece 40A and the content M. The space S is formed in a substantially triangular prism shape that narrows from the upper side to the lower side with the side piece portion 40A as an inclined surface.

  As shown in FIG. 6, for example, the user tilts the pair of left and right tilt pieces 40 to the outside of the first side walls 10 and 11 to form a pair of left and right spaces S. Then, the user puts both hands (finger) in the pair of spaces S and sandwiches (holds) the contents M to lift. As described above, the user can take out the contents M from the packaging box 1.

  According to the packaging box 1 which concerns on this embodiment demonstrated above, even if it is a user who does not know the function of the tilting piece 40, the side piece part 40A of the tilting piece 40 is automatically opened by opening the upper flaps 30-33. Can be tilted to the outside of each side wall 10-13. Thereby, the user can easily take out the contents M by putting his hand in the space S formed between the side piece 40A and the contents M.

  Moreover, in the packaging box 1 which concerns on this embodiment, it was set as the structure by which the lid piece part 40B can weaken rigidity by 60 A of crushing areas, and the intermediate folding line 60B. According to this configuration, in the process of bending the upper flaps 30 to 33 to the outside of the side walls 10 to 13, the lid piece portion 40 </ b> B can be bent so that the intermediate fold portion 60 becomes the uppermost point. Accordingly, the operation of opening the upper flaps 30 to 33 can be appropriately interlocked with the operation of tilting the side piece portion 40A while pushing up the intermediate fold portion 60.

  Further, by forming the intermediate folding line 60B in the stepped region 60A, the rigidity of the cover piece part 40B is effectively weakened compared to the case where the stepped region 60A or the intermediate folding line 60B is formed in the cover piece part 40B ( Can be reduced). Thereby, the lid piece part 40B can be easily bent at the intermediate fold part 60, and the smooth operation of opening the upper flaps 30 to 33 and depressing the side piece part 40A while pushing up the intermediate fold part 60 is facilitated. Can be secured.

  Moreover, according to the packaging box 1 which concerns on this embodiment, by forming the intermediate fold part 60 in the center vicinity of the space | interval of the upper ridge part fold curve L3 and the lid piece fold curve 51L, the upper flaps 30- The lid piece 40B can be easily bent at the intermediate fold portion 60 in conjunction with the operation of opening 33.

  Moreover, in the packaging box 1 which concerns on this embodiment, the side piece part 40A is connected to each side wall 10-13 via the side piece folding curve 50L, and the lid piece part 40B is an upper part via the lid piece folding curve 51L. The flaps 30 to 33 were continuously provided. According to this configuration, the side piece 40A can easily fall down outside the side walls 10 to 13 along the side piece folding curve 50L, and the lid piece 40B can be folded along the lid piece folding curve 51L. The part 60 can be easily broken so as to be lifted.

  In addition, in the packaging box 1 which concerns on this embodiment, although the leveling area | region 60A was formed in the range of the substantially half of the space | interval (D) of the upper ridge part folding curve L3 and the lid piece folding curve 51L, this invention is It is not limited to this. The stepped region 60A only needs to be formed in the range of 1/3 or more and 2/3 or less of the interval (D) between the upper ridge folding curve L3 and the lid piece folding curve 51L. The corrugated area 60A was formed by crushing the corrugated cardboard sheet in the thickness direction from the side of the back liner 9C. However, the present invention is not limited to this. For example, the corrugated sheet 9A is compressed from both the front and back surfaces of the corrugated cardboard sheet. It may be formed (not shown).

  Moreover, in the packaging box 1 which concerns on this embodiment, although the intermediate folding line 60B (cutting line) was formed in the approximate center part of 60 A of stepped areas, this invention is not limited to this. For example, the intermediate folding line 60B may be formed so as to be shifted to the base end side (the lid piece folding curve 51L side) or the distal end side (the upper ridge folding line L3 side) of the stepped region 60A (not shown). ) Further, the length of the intermediate folding line 60B (the dimension in the flow direction) can be appropriately adjusted according to the thickness of the corrugated cardboard sheet, the rigidity of the material itself, and the like.

  In addition, although the packaging box 1 which concerns on this embodiment was provided with the intermediate | middle crease | fold part 60 which formed the intermediate | middle fold curve 60B in the stage crushing area | region 60A, this invention is not limited to this. For example, as shown in FIG. 8, in the tilting piece 41 of the packaging box 1 according to the first modified example, the intermediate folding line 60B is omitted, and the intermediate fold portion 61 is a crushed area 60A in which the corrugated cardboard sheet is crushed in the thickness direction. It may be. On the contrary, as shown in FIG. 9, in the tilting piece 42 of the packaging box 1 according to the second modified example, the stepped region 60A is omitted, and the intermediate fold portion 62 is replaced by the intermediate folding line 60B (cutting). Line). Each of the intermediate fold portions 61 and 62 is designed to lower (weaken) the rigidity of the corrugated cardboard sheet than the folding lines L1 to L3.

  Moreover, as for the packaging box 1 which concerns on this embodiment, although the intermediate folding line 60B was a cutting line, this invention is not limited to this. The intermediate folding line 60B may be a line as described below instead of the cutting line.

  For example, as shown in FIG. 10, in the tilting piece 43 (intermediate fold portion 63) of the packaging box 1 according to the third modified example, the intermediate fold curve 63B has a thickness of the corrugated cardboard sheet from the front liner 9B side (front side). It may be a reverse ruled line crushed linearly in the direction. In addition, as shown in FIG. 11, in the tilting piece 44 (intermediate fold portion 64) of the packaging box 1 according to the fourth modified example, the intermediate fold curve 64 </ b> B includes a plurality of cuts obtained by cutting the cardboard sheet in the thickness direction. The sewing machine lines may be arranged in a straight line at intervals. In addition, as shown in FIG. 12, in the tilting piece 45 (intermediate fold portion 65) of the packaging box 1 according to the fifth modification, the intermediate fold curve 65B is on the general ruled line (or reverse ruled line). It may be a lead ruled line in which a plurality of cuts are arranged at intervals. Furthermore, as shown in FIG. 13, in the tilting piece 46 (intermediate fold portion 66) of the packaging box 1 according to the sixth modified example, the intermediate fold curve 66B includes a corrugated cardboard sheet on the back liner 9C side ( A half-cut line (see arrow Z) cut linearly from the back side to the middle in the thickness direction may be used. Note that any of the intermediate fold portions 63 to 66 is designed to lower (weaken) the rigidity of the corrugated cardboard sheet than the folding lines L1 to L3. In addition, the above-described intermediate fold lines 63B to 66B may constitute the intermediate fold portions 63 to 66 alone, or may constitute the intermediate fold portions 63 to 66 in combination with the crushed region 60A. Good (not shown). In addition, the formation positions, lengths, and the like of the above-described intermediate folding curves 63B to 66B can be appropriately adjusted according to the thickness of the corrugated cardboard sheet, the rigidity of the material itself, and the like.

  According to the packaging box 1 which concerns on the 1st-6th modification of this embodiment demonstrated above, the tilting pieces 41-46 are automatically made outside the each side wall 10-13 by opening upper flaps 30-33. It is possible to obtain the same actions and effects as the packaging box 1 (tilting piece 40) already described, such as being able to be brought down.

  Moreover, in the packaging box 1 which concerns on this embodiment, although a pair of cut line 40L for forming the tilting piece 40 extended mutually parallel, this invention is not limited to this. For example, as shown in FIG. 14, in the packaging box 1 according to the seventh modified example, the pair of cut lines 47L are inclined so as to approach each other from the side walls 10-13 toward the upper flaps 30-33. May be. That is, the tilting piece 47 (side piece 47A, lid piece 47B) may be formed in a substantially trapezoidal shape that becomes narrower from the side walls 10-13 toward the upper flaps 30-33. The extraction hole formed after the tilting piece 47 is pulled out is also formed in a substantially trapezoidal shape equivalent to the tilting piece 47. Instead of the intermediate fold portion 60, intermediate fold portions 61 to 66 according to the first to sixth modifications may be employed.

  According to the packaging box 1 which concerns on the 7th modification of this embodiment demonstrated above, in the state which fell the side piece part 47A to the outer side of each side wall 10-13 so that the intermediate | middle fold part 60 may become the highest point, The upper ridge folding line L3 side (tip side portion) of the lid piece 47B is pushed into the extraction holes on the upper flaps 30 to 33 side. Thereby, since the front end side part of the lid piece part 47B engages with the side edge part of the extraction hole, the side piece part 47A can be held in a collapsed state. As a result, since the upper flaps 30 to 33 are maintained in an open state, the user can take out the contents M more easily.

  Further, for example, as shown in FIG. 15, the pair of cut lines 48L may be inclined so as to be separated from each side wall 10-13 toward the upper flaps 30-33 (eighth modification). . That is, the tilting piece 48 (side piece 48A, lid piece 48B) may be formed in a substantially trapezoidal shape that becomes wider from the side walls 10-13 toward the upper flaps 30-33. In this case, the function of maintaining the upper flaps 30 to 33 in the open state like the packaging box 1 according to the seventh modification is lost, but the same action as the packaging box 1 according to the first to sixth modifications, An effect can be obtained. Instead of the intermediate fold portion 60, intermediate fold portions 61 to 66 according to the first to sixth modifications may be employed.

  In the packaging box 1 according to this embodiment (including the first to eighth modifications, the same applies hereinafter), the tilting pieces 40 to 48 are formed on the upper portions of the side walls 10 to 13 and the upper flaps 30 to 33. However, the present invention is not limited to this. For example, when the packaging box is opened upside down, the tilting pieces 40 to 48 may be formed on the lower portions of the side walls 10 to 13 and the lower flaps 20 to 23 (not shown).

  Further, in the packaging box 1 according to the present embodiment, the side piece portions 40A, 47A, and 48A are continuously provided via one side piece folding curve 50L, and the lid piece portions 40B, 47B, and 48B are provided as one lid piece. Although connected via the folding line 51L, the present invention is not limited to this. For example, the side piece portions 40A and the like may be continuously provided via two side piece folding curves 50L, and the lid piece portion 40B and the like may be provided continuously via two lid piece folding curves 51L. The two side piece folding curves 50L and the two lid piece folding curves 51L are preferably formed in parallel with an interval of several mm.

  Further, the packaging box 1 according to the present embodiment is a so-called A-type cardboard box, but the present invention is not limited to this. For example, the features of the present invention are applied to other types of boxes such as a B-type cardboard box having a plug-type lid extending from one side wall, and a wraparound case that seals the contents M so as to be rolled up. May be. Moreover, in the packaging box 1, although it formed so that an upper surface might be opened, not only this but it may be formed so that a side surface may be opened as another packaging box (not shown). In this case, the rotation shafts (general ruled lines) of the flaps 30 to 33 extend in the vertical direction, and the tilting pieces 40 to 48 are formed at the peripheral edge of the side opening. Moreover, the size of the packaging box 1 can be freely changed according to the number, size, and shape of the contents M. Furthermore, although two contents M are arranged in the front and back in the packaging box 1, the number and arrangement of the contents M are not limited to this, and the size of the contents M It can be freely changed according to the shape.

  Moreover, although the packaging box 1 which concerns on this embodiment was formed with the paper-made cardboard sheets, it is not restricted to this, For example, you may be formed with the cardboard, resin-made boards, etc.

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

1 Packaging box 10, 11 1st side wall (side wall)
12, 13 Second side wall (side wall)
30, 31 Upper inner flap (lid wall)
32, 33 Upper and outer flaps (lid walls)
40-48 tilting piece 40A, 47A, 48A side piece 40B, 47B, 48B lid piece 40L, 47L, 48L cut line 50L side fold curve 51L lid piece fold curve 60-66 intermediate fold part 60A stepped area 60B , 63B-66B Intermediate folding curve L3 Upper ridge folding curve

Claims (8)

Side walls (10-13);
A lid wall (30 to 33) connected to the side wall via a ridge folding line (L3);
A tilt piece (40-48) formed between a pair of cut lines (40L, 47L, 48L) extending across the ridge folding line,
The tilting piece is
Side pieces (40A, 47A, 48A) formed on the side wall;
A lid piece (40B, 47B, 48B) formed on the lid wall;
A lid piece fold curve (51L) formed in parallel to the ridge portion fold curve on the base end side of the lid piece portion on the opposite side to the side piece portion across the ridge portion fold curve,
An intermediate fold portion (60 to 66) formed on the lid piece portion between the ridge folding curve and the lid piece folding curve, and reducing the rigidity of the lid piece portion,
In conjunction with the operation of opening the lid wall on the outside of the side wall with the ridge folding curve as a fulcrum, the side piece part falls toward the outside of the side wall while pushing up the intermediate fold part, and the lid piece part Is a folding box that is folded at the intermediate fold portion while being folded at the lid fold curve. The side wall and the lid wall are formed of cardboard sheets,
The packaging box according to claim 1, wherein the intermediate fold portion is a crushed region (60A) in which the corrugated cardboard sheet is crushed in the thickness direction. The side wall and the lid wall are formed of cardboard sheets,
The intermediate fold portion includes a reverse ruled line in which the corrugated sheet is crushed linearly in the thickness direction from the front side, a cutting line in which the corrugated sheet is cut linearly in the thickness direction, and a plurality of the corrugated sheet cut in the thickness direction. Thickness from the back side of the lead ruled line or the corrugated sheet with the plurality of cuts arranged on the perforated line of the cut line and the ruled line in which the corrugated sheet is crushed linearly in the thickness direction. The packaging box according to claim 1, wherein the packaging box is an intermediate folding line (60B, 63B to 66B) formed by a half-cut line that is linearly cut halfway in the direction.   4. The packaging box according to claim 3, wherein the intermediate fold portion is formed by forming the intermediate fold curve in a crushed region (60 </ b> A) in which the corrugated cardboard sheet is crushed in a thickness direction.   The stepped region is a position separated from the ridge folding curve and the lid fold curve, and a range of 1/3 or more and 2/3 or less of the interval between the ridge folding curve and the lid fold curve. The packaging box according to claim 2, wherein the packaging box is formed as follows. The tilting piece is a side piece folding curve (50L) formed in parallel with the ridge portion folding curve on the base end side of the side piece portion opposite to the lid piece portion across the ridge portion folding curve. )
In conjunction with the operation of opening the lid wall outside the side wall with the ridge folding curve as a fulcrum, the side piece part falls toward the outside of the side wall with the side piece folding curve as a fulcrum. The packaging box according to any one of claims 1 to 5.   The packaging box according to claim 1, wherein the pair of cut lines are inclined so as to approach each other from the side wall toward the lid wall.   The packaging box according to any one of claims 1 to 6, wherein the pair of cut lines are inclined so as to be separated from the side wall toward the lid wall.

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