JP2014105012A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box capable of restraining the occurrence of a trunk swelling, while securing exhibition performance of a storage object.SOLUTION: The packing box can house the housed object, and has a bottom wall (20), a left sidewall (30), a right sidewall (40), a front wall (50) and a rear wall (60), the left sidewall (30) has a left side cutting guide part (33), the right sidewall (40) has a right side cutting guide part, the left side cutting guide part (33) has a shape of satisfying conditions of (L1) to (L3), and the right side cutting guide part has a shape of satisfying conditions of (R1) to (R3). (L1) In the left sidewall, mutually adjacent two sides are connected. (L2) A left side center longitudinal section line is crossed. (L3) In the left side center longitudinal section line, a central point in the vertical direction of the left sidewall is not passed. (R1) In the right sidewall, mutually adjacent two sides are connected. (R2) A right side center longitudinal section line is crossed. (R3) In the right side center longitudinal section line, a central point in the vertical direction of the right sidewall is not passed.

Description

  The present invention relates to a packaging box for accommodating an object such as a product package.

  2. Description of the Related Art Conventionally, a packaging box capable of accommodating a plurality of objects to be stored has a display function at a store. Specifically, such a packaging box is transported in a state in which the plurality of objects to be stored are accommodated, and then a part of the packaging box is cut off at a store as a transport destination, whereby each container It is possible to display the items as they are without taking them out of the packaging box.

  For example, Patent Document 1 includes a substantially rectangular bottom wall, a left side wall and a right side wall connected to the bottom wall, and a front wall and a rear wall connected to the bottom wall, the left side wall, A packaging box is disclosed in which a cut line having a shape crossing each wall is formed on each of the right side wall and the rear wall. And the said front wall is formed with the transverse cut line of the shape which crosses the said front wall, and the both ends of this transverse cut line are connected with the said cut line. That is, the packaging box is separable into the site | part above each cut line, and the site | part below each cut line by cut | disconnecting with a horizontal cut line and a cut line. In the store, the upper part of the packaging box is cut off, and the items to be stored, which are commodities, are displayed in a state where a part thereof is exposed from the lower part.

JP 2012-006611 A

  A packaging box as described in Patent Document 1 is usually transported and stored in a state where a plurality of packaging boxes are stacked in a plurality of stages. At this time, a very large stacking load acts on the lowermost packaging box in particular, so that so-called bulging that deforms so that both side walls of the packaging box bulge outward is likely to occur. Specifically, in such a packaging box, the cut line, that is, the side wall is set to 2 side so that as many parts as possible are exposed when the contents are displayed at a store. Since the cutting guide part for guiding the cutting to be separated into two regions has a shape that crosses the side wall in the front-rear direction, when the stacking load acts on the packaging box, However, it is easy to buckle at the cutting guide part.

  When this swelling occurs, the stacked state of these packaging boxes becomes unstable. Further, the occurrence of the swelling of the body can be avoided by reducing the number of stacked packaging boxes, but this significantly reduces the conveyance efficiency and the storage efficiency.

  The objective of this invention is providing the packaging box which can suppress generation | occurrence | production of a swelling of a body, ensuring the display property of a to-be-contained object.

  In order to solve the above problems, the inventors of the present invention make the respective cutting guide portions formed on both side walls not to cross the side wall in the front-rear direction, that is, the boundary between each side wall and the front wall or By preventing any one of the boundaries between the side walls and the rear wall from being divided by the cutting guide portion over the entire vertical direction, a column is formed at the boundary portion on the undivided side. The idea was to suppress the occurrence of swollen body under the pile load. However, even in this case, the display object is required to be sufficiently exposed when the object is displayed.

  In general, when the cutting guide portion is not formed on each side wall, the portion that bulges outward when each side wall buckles is parallel to the bottom wall through the vertical center of each side wall. It is known that it is near the central point in the center in the front-rear direction on the central transverse line. Therefore, even if the cutting guide portion has a shape that does not cross the side wall in the front-rear direction, when the cutting guide portion has a shape that passes through the center point, a portion of the cutting guide portion near the center point is seated. There is a concern that it will be the starting point of bending, and it will be easy for swelling to occur.

Therefore, the present invention is a packaging box that can accommodate an object to be stored, and has a substantially rectangular bottom wall and a substantially rectangular bottom wall connected to the left end of the bottom wall so as to be substantially orthogonal to the bottom wall. The left side wall is connected to the right end of the bottom wall so as to be substantially orthogonal to the bottom wall, the right wall having the same shape as the left side wall, and the bottom wall so as to be substantially orthogonal to the bottom wall A front wall connected to both the front end of the left side wall and the front end of the right side wall, and a rear side end part of the bottom wall so as to be substantially orthogonal to the bottom wall. A rear wall connected to both the rear end of the left side wall and the rear end of the right side wall, the left side wall inducing a cut that separates the left side wall into two regions A right-side cutting guide portion that has a left-side cutting guide portion, and the right-side wall guides cutting so as to separate the right-side wall into two regions; The left-side cutting guide portion has a shape that satisfies the following conditions (L1), (L2), and (L3), and the right-side cutting guide portion includes the following conditions (R1), (R2), and ( A packaging box having a shape satisfying R3).
(L1) Connect two adjacent sides of the left side wall.
(L2) It passes through the center in the front-rear direction of the left side wall and crosses the left side center vertical line perpendicular to the bottom wall.
(L3) Of the left central longitudinal line, the vertical center of the left side wall is not passed.
(R1) Connect two adjacent sides of the right side wall.
(R2) It passes through the center of the right side wall in the front-rear direction and crosses the right side center vertical line perpendicular to the bottom wall.
(R3) Of the right center vertical disconnection line, the center point in the vertical direction of the right side wall is not passed.

  According to the present invention, the left-side cutting guide portion connects two adjacent sides of the left-side wall and has a shape that crosses the left-side central longitudinal line. When the material is cut at the portion, the object to be stored is sufficiently exposed, and the display property of the object to be stored is ensured. Further, since the stacked load can be reliably received at either the front end or the rear end of the left side wall, and formation of a buckling start point on the left side wall is avoided, the occurrence of swelling of the body Is suppressed. Specifically, since the left-side cutting guide portion has a shape connecting two adjacent sides of the left-side wall, either the front end or the rear end of the left-side wall is formed by the left-side cutting guide portion. It remains as a part that extends continuously over the entire region in the vertical direction without being divided, and this remaining part functions as a column that receives the stacked load. And since the said left side cutting guide part does not pass through the said center point, formation of the generation | occurrence | production origin of the buckling to this left side wall is avoided. The same applies to the right side wall.

  More specifically, the left-side cutting guide crosses the upper side of the left central longitudinal line above the upper reference point located above the center point by a quarter of the vertical dimension of the left side wall. Or the left central longitudinal line has a shape that crosses a lower side below a lower reference point that is lower than the center point by a quarter of the vertical dimension of the left side wall. The section crosses above the upper reference point located above the center point by a quarter of the vertical dimension of the right side wall from the center point or out of the right center vertical line. It is preferable to have a shape that crosses the lower side of the lower reference point located below the center point by a quarter of the vertical dimension of the right side wall.

  In this way, the occurrence of body swelling is further suppressed. Specifically, the left-side cutting guide portion does not pass between the upper reference point and the lower reference point in the vicinity of the central point including the central point, that is, the left central longitudinal line. The formation of the buckling starting point on the left side wall is further suppressed. The same applies to the right side wall.

  In this case, the left-side cutting guide part has a shape that passes through the center of the left-side wall in the vertical direction and does not intersect with the left-side central transverse line orthogonal to the left-side center vertical line, It is preferable to have a shape that passes through the center of the right side wall in the vertical direction and does not intersect with the right side central transverse line orthogonal to the right side center vertical line.

  In this way, the occurrence of body swelling is further suppressed. In general, when the stacked load is applied to the left side wall, the left side wall is likely to be broken at the left center transverse line or the left side cutting guide. Therefore, when the left-side cutting guide part has a shape that intersects with the left-side central transverse line, there is a concern that the intersection of the two becomes a starting point for occurrence of buckling, whereas the left-side cutting guide part of the present invention is Since it has a shape that does not intersect the transverse line, the formation of the buckling occurrence point on the left side wall is avoided. The same applies to the right side wall.

  Furthermore, in this case, one end of the left-side cutting guide part is above the left central transverse line among the front ends of the left-side wall, and the other end of the left-side cutting guide part is the above-mentioned upper end of the left-side wall. It is located behind the left central longitudinal line, one end of the right cutting guide part is located above the right central transverse line among the front ends of the right wall, and the other end of the right cutting guide part is the right side. It is preferable that it exists in the back side rather than the said right center vertical disconnection line among the upper ends of a wall.

  If it does in this way, the spilling to the left-right direction of the said to-be-contained object from the said packaging box will be suppressed, ensuring the visibility of the to-be-contained object from the front side of the said packaging box. Specifically, at least a part of the portion above the central transverse line is separated from the front end of each side wall by cutting at each cutting guide, so that the object to be viewed from the front side is visible. Sex is secured. And even after cut | disconnecting by each cutting | disconnection guide | induction part, since the area | region of at least the lower half of both side walls remains, the spillage of the said to-be-contained item from the said packaging box to the left-right direction is suppressed.

  Furthermore, it is preferable that the other end of the left-side cutting guide part is in front of the rear end of the left side wall, and the other end of the right side cutting guide part is in front of the rear end of the right side wall.

  In this way, the occurrence of swelling is further suppressed while maintaining the exhibitability of the objects to be accommodated. Specifically, since the other end of the left-side cutting guide portion is in front of the rear end of the left side wall, the stacked load is applied to the boundary portion between the left side wall and the rear wall, Of these, it can also be received at a site in front of the boundary. The same applies to the right side wall. Therefore, the occurrence of swelling of the body is further suppressed.

  In the present invention, it is preferable that the right-side cutting guide portion has a shape symmetrical to the left-side cutting guide portion with a plane passing through the center of the bottom wall in the left-right direction and parallel to the left-side wall as a symmetry plane. .

  In this way, the occurrence of body swelling is further suppressed. In general, when a cutting guide portion is formed on the side wall, stress concentration occurs in this portion, so that the side wall is easily broken at the cutting guide portion. Therefore, when each cutting guide portion is not plane-symmetric with respect to the symmetry plane, that is, when the stress distribution generated on the both side walls is uneven when the stacked load is applied to the packaging box, There is a concern that one of them buckles first and then the other buckles. However, in the present invention, each cutting guide portion has a shape symmetrical with respect to the plane of symmetry, and thus occurs on both side walls. The stress distribution becomes substantially equal, and the occurrence of swelling is suppressed.

  In the present invention, the upper end of the front wall and the upper end of the rear wall are set at the same height as the upper end of the left side wall and the upper end of the right side wall, respectively. The lower ends of the walls are preferably in contact with the upper surface of the bottom wall.

  In this way, the occurrence of body swelling is further suppressed. Specifically, the upper end of the front wall and the upper end of the rear wall are set at the same height as the upper end of the left side wall and the upper end of the right side wall, respectively, and the lower end of the front wall and the rear wall Since the lower end of each is in contact with the upper surface of the bottom wall, the stacked load acting on the packaging box is received by the front wall and the rear wall in addition to the side walls. Therefore, since the pile load which each side wall bears is reduced, generation | occurrence | production of trunk swelling is further suppressed.

  As described above, according to the present invention, it is possible to provide a packaging box that can suppress the occurrence of swollen body while ensuring the exhibitability of the contained items.

It is a perspective view of the packaging box of one Embodiment of this invention. It is a left view of the packaging box shown in FIG. It is a perspective view which shows the display state of the packaging box in a store. It is sectional drawing in the IV-IV line of FIG. It is an expanded view of the paper pattern which forms a packaging box.

  A packaging box 10 according to an embodiment of the present invention will be described with reference to FIGS. In the following description, the vertical and horizontal directions and the front and rear directions are based on the directions displayed in FIG.

  As shown in FIG. 1, the packaging box 10 of the present embodiment includes a bottom wall 20, a left side wall 30, a right side wall 40, a front wall 50, a rear wall 60, and an upper wall 70. Presents a substantially rectangular parallelepiped shape. The left side wall 30 and the front wall 50 are connected over the whole area in the vertical direction. The same applies to the left side wall 30 and the rear wall 60, the right side wall 40 and the front wall 50, and the right side wall 40 and the rear wall 60. In the present embodiment, the packaging box 10 is formed of a paper material such as a cardboard sheet. However, the packaging box 10 is not limited to paper material and can be formed of various materials.

  A plurality of articles 18 as products are accommodated in the space S surrounded by the walls. The packaging box 10 is displayed at a store or the like in which the left-hand side cutting guiding portion 33, the right-side cutting guiding portion 43, the cutting line 54, and the like, which will be described later, are cut to expose the object 18 to the outside. The display mode is as shown (see FIG. 3).

  The bottom wall 20 has a substantially rectangular shape. In the present embodiment, the bottom wall 20 has a rectangular shape that is long in the front-rear direction.

  The left side wall 30 stands up from the left end of the bottom wall 20 so as to be substantially orthogonal to the bottom wall 20 and has a substantially rectangular shape. The left side wall 30 has a substantially rectangular left side wall body 31 that is long in the front-rear direction, and a left protruding part 32 that protrudes upward from the left side wall body 31. In the present embodiment, the left protrusions 32 are formed at four locations at equal intervals along the front-rear direction. The left side wall 30 has a left side cutting guide portion 33 that guides the cutting so that the left side wall 30 is divided into a main body portion 30a and a portion 30b to be removed at a store or the like.

  The left side cutting guide 33 has a shape that does not cross the left side wall 30 in the front-rear direction, more specifically, a shape that connects two adjacent sides of the left side wall 30 to each other. That is, in this packaging box 10, either the front end of the left side wall 30 (the boundary 11 between the left side wall 30 and the front wall 50) or the rear end of the left side wall 30 (the boundary 12 between the left side wall 30 and the rear wall 60). Remains as a part that extends continuously over the entire vertical direction without being divided by the left-side cutting guide 33, and this remaining part functions as a column that receives the accumulated load.

  The left-side cutting guide 33 has a shape that passes through the center in the front-rear direction of the left-side wall 30 and crosses the left-side center vertical line LL that is orthogonal to the bottom wall 20. More specifically, the left-side cutting guide portion 33 is near the center point O of the left side wall 30, that is, above the center point O in the vertical direction of the left side wall 30 by a first dimension L1. Crossing the left central longitudinal line LL at a position below the upper reference point P1 located at a position and avoiding a portion above the lower reference point P2 located by a second dimension L2 below the center point O. Has a shape. That is, the left-side cutting guide 33 has a shape that crosses the left-side central vertical line LL above the upper reference point P1 in the left-side central vertical line LL or below the lower reference point P2 in the left-side central vertical line LL. Have Here, the first dimension L1 and the second dimension L2 are set to be the same. In the present embodiment, the first dimension L1 and the second dimension L2 are both a quarter of the dimension H in the vertical direction of the left side wall 30.

  In addition, the left-side cutting guide portion 33 has a shape that passes through the center of the left-side wall 30 in the vertical direction and does not intersect with the left-side central transverse line TL that is orthogonal to the left-side center vertical line LL.

  In the present embodiment, one end (the left end in FIG. 2) of the left-side cutting guide portion 33 is above the left central transverse line TL among the front ends of the left side wall 30, and the other end (the right end in FIG. 2) is the left side wall. Among the upper ends of 30, they are on the rear side of the left central longitudinal line LL and on the front side of the rear end of the left side wall 30. That is, in this embodiment, the rear end of the left side wall 30 (the boundary 12 between the left side wall 30 and the rear wall 60) is a pillar. And the left side cutting | disconnection guide | induction part 33 exhibits the linear form inclined upwards as it goes to the other end side from the one end side, and has the shape which crosses the upper side of the upper reference point P1 among the left center vertical cutting lines LL. However, the shape of the left-side cutting guide portion 33 is not limited to this. In addition, as the left side cutting | disconnection guide | induction part 33, a perforation, an intermittent cut line, etc. are mentioned.

  The right side wall 40 stands up from the right end of the bottom wall 20 so as to be substantially orthogonal to the bottom wall 20 and has a substantially rectangular shape. The right side wall 40 is symmetrical with the left side wall 30 with a plane passing through the center of the bottom wall 20 in the left-right direction and parallel to the left side wall 30 as a symmetry plane. That is, the right side wall 40 includes a right side wall main body 41 having the same shape as the left side wall main body 31, a right protruding part 42 having the same shape as the left protruding part 32, and a right side cutting guiding part 43 having the same shape as the left side cutting guide part 33. Have Since the right side wall 40 has a shape symmetrical to the left side wall 30, description of the right side wall 40 is omitted.

  The front wall 50 has a rectangular shape that is long in the vertical direction. The front wall 50 includes a first front wall forming piece 51, a second front wall forming piece 52, and a third front wall forming piece 53. The first front wall forming piece 51 is connected to the front end of the left side wall 30 and has a rectangular shape that is long in the vertical direction. As shown in FIGS. 2 and 4, the first front wall forming piece 51 has a lower end that abuts on the upper surface of the bottom wall 20 and an upper end that is the same height as the upper ends of the projecting portions 32 and 42. Is set to In FIG. 4, another packaging box stacked on the packaging box 10 of the present embodiment is indicated by a broken line. The second front wall forming piece 52 is connected to the front end of the right side wall 40 and has a rectangular shape that is long in the vertical direction. As shown in FIGS. 2 and 4, the second front wall forming piece 52 also has a lower end in contact with the upper surface of the bottom wall 20, and an upper end that is the same height as the upper ends of the projecting portions 32 and 42. Is set to The sum of the horizontal dimension of the first front wall forming piece 51 and the horizontal dimension of the second front wall forming piece 52 is set to be substantially the same as the horizontal dimension of the bottom wall 20. That is, as shown in FIG. 1, the front side of the space S is closed by the first front wall forming piece 51 and the second front wall forming piece 52. The third front wall forming piece 53 is connected to the front end of the bottom wall 20 and has a rectangular shape that is long in the left-right direction. The third front wall forming piece 53 is located on the front side of the first front wall forming piece 51 and the second front wall forming piece 52, and its rear surface is the front surface of the first front wall forming piece 51 and the second front wall forming piece 52. It is glued to the front of the.

  The front wall 50 has a cut line 54 shaped to cross the front wall 50 in the left-right direction. Specifically, the cut line 54 includes a first cut line 54a having a shape that crosses the first front wall forming piece 51 in the left-right direction and a first cut line 54 having a shape that crosses the second front wall forming piece 52 in the left-right direction. And two cut lines 54b. In the present embodiment, the height position from the bottom wall 20 at the right end of the first lead line 54a coincides with the height position from the bottom wall 20 at the left end of the second cut line 54b. Is set to

  The rear wall 60 has a rectangular shape that is long in the vertical direction. The rear wall 60 has the same shape as that of the front wall 50, except that a score line is not formed. Specifically, the rear wall 60 passes through the center of the bottom wall 20 in the front-rear direction and is parallel to a plane parallel to the front wall 50. The surface has a shape symmetrical to the front wall 50. That is, the rear wall 60 includes a first rear wall forming piece 61 having the same shape as the first front wall forming piece 51, a second rear wall forming piece 62 having the same shape as the second front wall forming piece 52, and a third front wall. It has the wall formation piece 53 and the 3rd rear wall formation piece 63 of the same shape. However, no cut line is formed on the rear wall 60.

  The upper wall 70 is formed by a first upper wall forming piece 71 connected to the upper end of the left side wall main body 31 and a second upper wall forming piece 72 connected to the upper end of the right side wall main body 41. Specifically, the left end portion of the first upper wall forming piece 71 is connected to the left side wall body 31, but not connected to the left protruding portion 32, and the second upper wall forming piece 72 The right end is connected to the right wall main body 41, but is not connected to the right protruding portion 42. The horizontal dimension of the first upper wall forming piece 71 is smaller than the same dimension of the first front wall forming piece 51 and the first rear wall forming piece 61, and the horizontal dimension of the second upper wall forming piece 72. Is smaller than the dimensions of the second front wall forming piece 52 and the second rear wall forming piece 62 in the same direction. Therefore, a gap is formed between the upper wall forming pieces 71 and 72, and the object 18 in the packaging box 10 can be visually recognized through the gap.

  Here, the process which makes the packaging box 10 of this embodiment the display mode shown in FIG. 3 from the mode (mode at the time of conveyance and storage) shown in FIG. 1 is demonstrated.

  First, by applying an external force such that the right end of the upper part of the first front wall forming piece 51 above the first lead line 54a opens outward with respect to the left end of the part, the first front wall forming piece 51 extends along the first lead line 54a. Then, the first front wall forming piece 51 is cut. Then, the part of the first front wall forming piece 51 is cut along the boundary between the part above the first insertion line 54 a and the left side wall 30. In addition, each said cutting | disconnection may be performed in reverse order. The same process is performed for the second front wall forming piece 52.

  Subsequently, the left side wall 30 is cut along the left side cutting guide portion 33. Specifically, the left cutting guide 33 is cut from the front end toward the rear end. Then, the to-be-removed part 30b and the first upper wall forming piece 71 of the left side wall 30 are removed by cutting along the boundary between the main body 30a of the left side wall 30 and the first upper wall forming piece 71. Similarly, after cutting from the front end to the rear end of the right-side cutting guide portion 43, by cutting along the boundary between the main body portion of the right-side wall 40 and the second upper wall forming piece 72, the right side wall 40 is covered. The removal portion and the second upper wall forming piece 72 are removed.

  By the above process, the packaging box 10 of this embodiment becomes the said display aspect, ie, the aspect which a part of the to-be-contained object 18 exposes.

  FIG. 5 shows a box forming member 10 ′ for forming the packaging box 10 described so far. That is, this box forming member 10 ′ corresponds to a developed state of the packaging box 10.

  As shown in FIG. 5, a bending guide portion 21 that guides the bending of the left side wall 30 with respect to the bottom wall 20 is formed at the boundary between the bottom wall 20 and the left side wall 30. Similarly, the boundary between the bottom wall 20 and the right side wall 40, the boundary between the bottom wall 20 and the third front wall forming piece 53, and the boundary between the bottom wall 20 and the third rear wall forming piece 63 are also bent. Guide portions 22 to 24 are formed. Specifically, each bending guide part 21-24 is a ruled line. The bending guide portion 21 formed at the boundary between the bottom wall 20 and the left side wall 30 has a slit top portion 25 formed between the first front wall forming piece 51 and the third front wall forming piece 53 and the first portion. It is formed outside by a predetermined dimension from the straight line connecting the top 26 of the slit between the rear wall forming piece 61 and the third rear wall forming piece 63. The same applies to the bending guide portion 22 formed at the boundary between the bottom wall 20 and the right side wall 40.

  At the boundary 11 between the left side wall 30 and the first front wall forming piece 51, a front side bending guide portion 34 that guides the bending of the first front wall forming piece 51 with respect to the left side wall 30 is formed. A rear bending guide portion 35 that guides the bending of the first rear wall forming piece 61 with respect to the left side wall 30 is formed at the boundary 12 (column) with the rear wall forming piece 61, and the left side wall 30 and the first upper wall are formed. At the boundary with the forming piece 71, an upper bending guide portion 36 that guides the bending of the first upper wall forming piece 71 with respect to the left side wall 30 is formed. In addition, the shape of each bending induction | guidance | derivation part formed in each bending induction | guidance | derivation part in the right side wall 40 side, ie, each bending induction | guidance part 34-36 on the basis of the bottom wall 20, is the left side wall 30. Since it is the same shape as each bending guide part 34-36 of the side, the description is abbreviate | omitted.

  The front bending guide part 34 has an intermittent cut line 34a and a ruled part 34b. The cut line 34a has a shape extending from the upper end of the boundary 11 between the left side wall 30 and the first front wall forming piece 51 to the first cut line 54a, and the ruled part 34b extends from the first cut line 54a. It has a shape that reaches the lower end of the boundary 11.

  The rear bending guide part 35 has intermittent cut lines 35a and ruled parts 35b. The cut line 35a and the ruled part 35b are each set to a predetermined dimension.

  Since the front bending guide part 34 includes the cut line 34a, the first front wall forming piece 51 can be easily bent, and the rear bending guide part 35 includes the cut line 35a. The rear wall forming piece 61 can be easily bent.

  The upper bending guide part 36 has a first cut line 36 a that defines the upper end of the left side wall body 31 and a second cut line 36 b that defines the upper end of the left protruding part 32. The first cut line 36 a is a cut line cut intermittently along the boundary between the left side wall body 31 and the first upper wall forming piece 71. The second cut line 36b is intermittently cut along a line which is positioned on the first upper wall forming piece 71 side by a predetermined dimension from the first cut line 36a and extends in parallel with the first cut line 36a. It is a cut line. The first cut lines 36 a and the second cut lines 36 b are alternately arranged at regular intervals from the front end to the rear end of the left side wall 30.

  As described above, in the packaging box 10 of the present embodiment, the left-side cutting guide portion 33 has a shape that connects two adjacent sides of the left-side wall 30 and crosses the left-side central vertical line LL. When the left side wall 30 is cut by the left side cutting guide portion 33, the object 18 is sufficiently exposed, and the display property of the object 18 is ensured. Furthermore, the stacked load can be reliably received at the rear end of the left side wall 30 (the boundary 12 between the left side wall 30 and the rear wall 60), and formation of a buckling starting point on the left side wall 30 is avoided. Therefore, the occurrence of swelling of the trunk is suppressed. Specifically, the left-side cutting guide portion 33 has a shape connecting two adjacent sides (the front side and the upper side) of the left side wall 30, so that the rear end of the left side wall 30 is the left side cut. It remains as a portion that extends continuously over the entire vertical direction without being divided by the guide portion 33, and the remaining portion functions as a column that receives the stacked load. Since the left-side cutting guide portion 33 does not pass through the center point O, the formation of the buckling occurrence start point on the left-side wall 30 is avoided. The above also applies to the right side wall 40 side.

  More specifically, the left-side cutting guide 33 does not pass between the upper reference point P1 and the lower reference point P2 in the vicinity of the center point O including the center point O, that is, in the left central longitudinal line LL. The formation of the buckling starting point on the left side wall 30 is further suppressed. The same applies to the right side wall 40 side.

  In addition, since the left-side cutting guide portion 33 of the above embodiment has a shape that does not intersect with the left central transverse line TL, formation of the buckling start point on the left-side wall 30 is avoided, and the right-side cutting guide portion 43 Since it has a shape that does not intersect the central transverse line, formation of a buckling occurrence point on the right side wall 40 is avoided. Specifically, in general, when the stacked load is applied to the left side wall 30, the left side wall 30 is easily broken at the left side center crossing line TL or the left side cutting guide part 33. In the case of a shape that intersects with the line TL, there is a concern that the intersection of the two becomes the starting point of buckling, whereas the left cutting guide portion 33 of the present embodiment does not intersect the left central transverse line TL. Formation of the starting point of occurrence of buckling to 30 is avoided. The same applies to the right side wall 40 side. Therefore, the occurrence of swelling is suppressed.

  Further, one end of the left cutting guide 33 is located above the left central transverse line TL in the front end of the left wall 30, and the other end of the left cutting guide 33 is the left central vertical line in the upper end of the left wall 30. One end of the right cutting guide 43 is on the upper side of the right central transverse line in the front end of the right wall 40, and the other end of the right cutting guide 43 is on the upper end of the right wall 40. Among them, since it is on the rear side with respect to the right center vertical disconnection line, the visibility of the object 18 from the front side of the packaging box 10 is ensured while the object 18 from the packaging box 10 in the left-right direction is secured. Spill-off is suppressed. Specifically, since the cutting at the cutting guide portions 33 and 43 separates at least a part of the front side ends of the side walls 30 and 40 above the respective central transverse lines, the packaging box 10 Visibility of the object 18 from the front side is ensured. Even after cutting by the cutting guide portions 33 and 43, at least the lower half area of the side walls 30 and 40 remains, so the spillage of the object 18 from the packaging box 10 in the left-right direction is dropped. Is suppressed.

  Furthermore, since the other end of the left-side cutting guiding portion 33 is in front of the rear end of the left side wall 30, the stacked load is added to the boundary portion between the left side wall 30 and the rear wall 60, and the It can also be received at the front part of the boundary. The same applies to the right side wall 40 side. Therefore, the occurrence of swelling of the body is further suppressed.

  Further, the right-side cutting guide portion 43 has a shape symmetrical to the left-side cutting guide portion 33 with a plane that passes through the center of the bottom wall 20 in the left-right direction and is parallel to the left-side wall 30 as a symmetry plane. It is further suppressed. In general, when a cutting guide portion is formed on the side wall, stress concentration occurs in this portion, so that the side wall is easily broken at the cutting guide portion. Therefore, when the cutting guide portions 33 and 43 are not plane-symmetric with respect to the symmetry plane, that is, when the stacking load is applied to the packaging box 10, the stress distribution generated on the side walls 30 and 40 is not uniform. When this occurs, there is a concern that either one of the side walls 30 and 40 will buckle first, and the other subsequently buckles, but in this embodiment, each of the cutting guide portions 33 and 43 is relative to the symmetry plane. Therefore, the stress distribution generated on both side walls 30 and 40 becomes equal, and the occurrence of swelling of the body is suppressed.

  The upper end of the front wall 50 and the upper end of the rear wall 60 are set at the same height as the upper end of the left side wall 30 (upper end of the left protruding portion 32) and the upper end of the right side wall 40 (upper end of the right protruding portion 42), respectively. Since the lower end of the front wall 50 and the lower end of the rear wall 60 are in contact with the upper surface of the bottom wall 20, the accumulated load acting on the packaging box 10 is applied to the side walls 30, 40, It is also received by the wall 50 and the rear wall 60. Therefore, since the pile load which each side wall 30 and 40 bears is reduced, generation | occurrence | production of a trunk swelling is further suppressed.

  Each embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which one end of the left-side cutting guiding portion 33 is at the front end of the left-side wall 30 and the other end of the left-side cutting guiding portion 33 is at the upper end of the left-side wall 30 is shown. One end of the left side wall 30 may be below the left central transverse line TL of the left side wall 30. Specifically, the left cutting guide portion 33 has one end below the left central transverse line TL in the front end of the left wall 30 and the other end in the left central vertical disconnection in the lower end of the left wall 30. A shape that is behind the LL and that crosses the lower side of the left center vertical line LL below the lower reference point P2, and one end thereof is at the front of the lower left center vertical line LL of the lower end of the left wall 30. In addition, the other end may be located below the left central transverse line TL at the rear end of the left side wall 30, and may also have a shape that crosses below the lower reference point P2 from the left central longitudinal line LL. Good. The same applies to the right-side cutting guide 43.

  In the above-described embodiment, the left-side cutting guide portion 33 is linear. However, the left-side cutting guide portion 33 may be a broken line shape, a curved line shape, or a mixture of these. . As an example, the left-side cutting guide portion 33 is parallel to the left-side central transverse line TL from the front end to the left-side central vertical line LL, and has a shape that goes upward from the left-side central vertical line LL toward the rear end. However, in the case of this shape, the intersection of the part from the front end to the left central transverse line TL and the part from the left central transverse line TL to the rear end of the left-side cutting guide portion 33 becomes the starting point of buckling. Is concerned. On the other hand, since the starting point of buckling is not formed when the left-side cutting guide portion 33 is linear as in the above-described embodiment, the left-side cutting guide portion 33 is preferably linear. The same applies to the right-side cutting guide 43.

  Moreover, although the example in which the bottom wall 20 is a rectangle that is long in the front-rear direction has been described in the above embodiment, the bottom wall 20 may be a rectangle or a square that is long in the left-right direction.

  Moreover, in the said embodiment, although the upper end of the left protrusion part 32 showed the example set to the same height position as the upper end of the front wall 50 and the upper end of the rear wall 60, the upper end of the left side wall 30 is the front-back direction. It may be set at the same height position as the upper end of the front wall 50 and the upper end of the rear wall 60 over the entire area. The same applies to the right side wall 40. Alternatively, the upper end of the front wall 50 and the upper end of the rear wall 60 are set at a lower height position than the left protruding portion 32 and the right protruding portion 42 so that only the left side wall 30 and the right side wall 40 receive a stacked load from above. Anyway.

  Further, the third front wall forming piece 53 may be omitted. In this case, the first front wall forming piece 51 and the second front wall forming piece 52 are set so as to overlap in the front-rear direction, and the front wall 50 is formed by bonding the overlapping portions. The same applies to the rear wall 60 side.

10 Packaging box 10 'Box forming member 11 Boundary 12 Boundary (pillar)
18 Object 20 Bottom Wall 30 Left Side Wall 30a Main Body 30b Removed Part 31 Left Side Wall Main Body 32 Left Projecting Part 33 Left Side Cutting Guide 40 Right Side Wall 41 Right Side Wall Main Body 42 Right Side Projecting Part 43 Right Side Cutting Guide Part 50 Front Wall 51 First front wall forming piece 52 Second front wall forming piece 53 Third front wall forming piece 54 Cut line 60 Rear wall 61 First rear wall forming piece 62 Second rear wall forming piece 63 Third rear wall forming piece 70 Wall 71 First upper wall forming piece 72 Second upper wall forming piece O Center point P1 Upper reference point P2 Lower reference point LL Left central vertical line TL Left central transverse line

Claims (7)

A packaging box capable of accommodating the contents;
A substantially rectangular bottom wall;
A substantially rectangular left wall connected to the left end of the bottom wall so as to be substantially orthogonal to the bottom wall;
Connected to the right end of the bottom wall so as to be substantially orthogonal to the bottom wall, and a right side wall having the same shape as the left side wall;
A front wall connected to the front end of the bottom wall so as to be substantially orthogonal to the bottom wall, and connected to both the front end of the left side wall and the front end of the right side wall;
The rear wall is connected to the rear end of the bottom wall so as to be substantially orthogonal to the bottom wall, and includes a rear wall connected to both the rear end of the left side wall and the rear end of the right side wall,
The left side wall has a left side cutting guide part that guides the cutting to separate the left side wall into two regions,
The right side wall has a right side cutting guide part that guides the cutting to separate the right side wall into two regions,
The left-side cutting guide portion has a shape that satisfies the following conditions (L1), (L2), and (L3), and the right-side cutting guide portion satisfies the following conditions (R1), (R2), and (R3): A packaging box with a filling shape.
(L1) Connect two adjacent sides of the left side wall.
(L2) It passes through the center in the front-rear direction of the left side wall and crosses the left side center vertical line perpendicular to the bottom wall.
(L3) Of the left central longitudinal line, the vertical center of the left side wall is not passed.
(R1) Connect two adjacent sides of the right side wall.
(R2) It passes through the center of the right side wall in the front-rear direction and crosses the right side center vertical line perpendicular to the bottom wall.
(R3) Of the right center vertical disconnection line, the center point in the vertical direction of the right side wall is not passed. In the packaging box according to claim 1,
The left-side cutting guide part crosses the upper side of the left center vertical line above the upper reference point located above the center point by a quarter of the vertical dimension of the left side wall, or the left-side center Of the longitudinal line, having a shape crossing the lower side below the lower reference point located by a quarter of the vertical dimension of the left side wall from the center point,
The right-side cutting guide section may cross the upper side of the right-side central longitudinal line above the upper reference point located above the center point by a quarter of the vertical dimension of the right-side wall, or the right-side center The packaging box which has a shape which traverses the lower side of the vertical reference line below the lower reference point located by a quarter of the vertical dimension of the right side wall from the center point. In the packaging box according to claim 2,
The left-side cutting guide part has a shape that passes through the center of the left-side wall in the vertical direction and does not intersect with the left-side central transverse line that is orthogonal to the left-side center vertical line,
The right-side cutting guide part has a shape that passes through the center of the right-side wall in the vertical direction and does not intersect with the right-side center transverse line that is orthogonal to the right-side center vertical line. In the packaging box according to claim 3,
One end of the left-side cutting guide part is above the left central transverse line in the front end of the left wall, and the other end of the left-side cutting guide part is from the left central vertical line in the upper end of the left wall. Is also on the back side,
One end of the right cutting guide part is above the right central transverse line in the front end of the right wall, and the other end of the right cutting guide part is from the right central vertical line in the upper end of the right wall. There is also a packaging box on the rear side. In the packaging box of Claim 4,
The other end of the left-side cutting guide is on the front side of the rear end of the left side wall,
The other end of the right side cutting guide part is a packaging box that is in front of the rear end of the right side wall. In the packaging box according to any one of claims 1 to 5,
The right cutting guide part is a packaging box having a shape symmetrical to the left cutting guide part with a plane passing through the center of the bottom wall in the left-right direction and parallel to the left wall as a symmetry plane. In the packaging box according to any one of claims 1 to 6,
The upper end of the front wall and the upper end of the rear wall are set at the same height as the upper end of the left side wall and the upper end of the right side wall, respectively.
The packaging box in which the lower end of the front wall and the lower end of the rear wall are in contact with the upper surface of the bottom wall.

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