Packaging containers

Abstract

To provide a technique capable of stably holding an object to be packaged while the object to be packaged is exposed.SOLUTION: A packaging container has a first support plate and a third support plate positioned in front of an article to be packaged, and forward movement of the article to be packaged beyond the first support plate and the third support plate is restricted. A second support plate and a fourth support plate are positioned behind the article to be packaged, and forward movement of the first support part including the first support plate, and forward movement of the second support part including the third support plate, with respect to the article to be packaged are restricted.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] This specification discloses a technology relating to a packaging container. [Background technology]

[0002] Patent Document 1 discloses a packaging container that packages an item to be packaged in an exposed state. The packaging container includes a holder that supports the item to be packaged. The holder grips or supports the item while adapting to its shape. The holder includes a substantially plate-shaped front portion and a substantially plate-shaped back portion that has a shape corresponding to the front portion. The front and back portions are arranged to face each other. The holder has a window formed in the front portion for introducing the item to be packaged into the holder.

[0003] The window frame is formed to correspond to the contour of the packaged item. Multiple flaps for gripping the packaged item are arranged on the window frame. The multiple flaps are flap-shaped pieces that contact the packaged item from multiple directions toward the center of the packaged item, and grip the packaged item using the resulting frictional force. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-077478 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above technology, the packaged item is held in place by the frictional force between the packaged item and the multiple flaps. Therefore, for example, if the contact area between the packaged item and the multiple flaps is small, sufficient frictional force is not generated between the multiple flaps and the packaged item, and the packaged item cannot be held in place stably.

[0006] This specification provides a technology that can stably hold packaged items while the packaged items are exposed. [Means for solving the problem]

[0007] This specification discloses a packaging container, the packaging container including a back panel having a pair of edges extending vertically at both left and right ends, a first side panel extending forward from one of the pair of edges, a second side panel extending forward from the other of the pair of edges, a first support portion extending from a position of the first side panel spaced apart from the back panel along a first fold line, a second support portion extending from a position of the second side panel spaced apart from the back panel along a second fold line, and a support member disposed at at least one of the upper and lower ends of the first support portion and the second support portion. The first support portion comprises a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, and the second support portion comprises a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, and the first support portion comprises a support plate on which the packaged item is placed. the second support portion has a second opening in which the packaged item is placed, the first support plate is located in front of the packaged item placed in the first opening and restricts the packaged item from moving forward beyond the first support plate, the third support plate is located in front of the packaged item placed in the second opening and restricts the packaged item from moving forward beyond the third support plate, the end plate is connected to the second side plate via a fold line and comprises a main body extending from the second side plate towards the first side plate and an insert piece connected to the main body via a fold line, the insert piece extending along the inner surface of the first side plate, the second support plate is located behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, and the fourth support plate is located behind the packaged item placed in the second opening and restricts the second support portion from moving forward relative to the packaged item.

[0008] Another packaging container disclosed in this specification includes a back panel having a pair of edges extending in a vertical direction at both left and right ends, a first side panel extending forward from one of the pair of edges, a second side panel extending forward from the other of the pair of edges, a first support portion extending from a position of the first side panel spaced apart from the back panel along a first fold line, a second support portion extending from a position of the second side panel spaced apart from the back panel along a second fold line, and end panels disposed at at least one of the upper ends and lower ends of the first support portion and the second support portion. The first support portion comprises a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, and the second support portion comprises a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, and the first support portion has a first opening in which the packaged item is placed, and the second support portion has a second opening in which the packaged item is placed. the first support plate is positioned in front of the packaged item placed in the first opening and restricts the packaged item from moving forward beyond the first support plate, the third support plate is positioned in front of the packaged item placed in the second opening and restricts the packaged item from moving forward beyond the third support plate, the second support plate is positioned behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, and the fourth support plate is positioned behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item. The end plate is located behind the packaged item placed in the second opening and restricts the second support part from moving forward relative to the packaged item, and the end plate is connected to the back plate via a fold line and comprises a main body extending forward from the back plate and a pair of insert pieces connected to the main body via a fold line, one of the pair of insert pieces extends along the inner surface of the first side plate and engages with the first support plate, and the other of the pair of insert pieces extends along the inner surface of the second side plate and engages with the third support plate.

[0009] In this configuration, the packaged items placed in the first opening and the second opening are exposed to the outside through the first opening and the second opening. The packaged items are restricted from moving forward by contacting the first support plate and the third support plate. The first support part and the second support part are restricted from moving forward by contacting the second support plate and the fourth support plate with the packaged items. With this configuration, the packaging container can stably hold the packaged items.

[0010] The second support plate may extend toward the back plate via the third fold line, the first opening may be disposed between the first support plate and the second support plate across the third fold line, the second support plate abutting against the back plate, the first side plate, and at least one of the insert piece, and positioned behind the packaged item disposed in the first opening to restrict the packaged item from moving rearward beyond the second support plate, and the fourth support plate may extend toward the back plate via the fourth fold line, the second opening may be disposed between the third support plate and the fourth support plate across the fourth fold line, the fourth support plate abutting against the back plate, the second side plate, and at least one of the insert piece, and positioned behind the packaged item disposed in the second opening to restrict the packaged item from moving rearward beyond the fourth support plate.

[0011] In this configuration, the forward movement of the packaged item is restricted by contact with the first support plate and the third support plate, and the backward movement is restricted by contact with the second support plate and the fourth support plate. With this configuration, the packaging container can stably hold the packaged item.

[0012] The fourth support plate may extend toward the boundary between the back plate and the second side plate and abut against the back plate and the second side plate.

[0013] In this configuration, the fourth support plate is disposed at the boundary between the back plate and the second side plate, at the corner defined by the back plate and the second side plate. This allows the fourth support plate to be sandwiched between the back plate and the second side plate, stabilizing the position of the fourth support plate. This stabilizes the posture of the second support part, allowing the packaged item to be stably supported.

[0014] The fourth support plate may have an insertion hole located on the boundary between the back panel and the second side panel, and the fourth support plate may be located on the edge opposite the fourth fold line and have a protrusion that is inserted into the insertion hole.

[0015] With this configuration, by inserting the protrusion into the insertion hole, the fourth support plate can be more stably positioned at the boundary between the back plate and the second side plate, thereby stabilizing the posture of the second support part and enabling stable support of the packaged item.

[0016] The end plates may be disposed at the upper and lower ends of the first support portion and the second support portion, respectively.

[0017] The positional relationship between the first and second side panels and the back panel is determined by the end panels. According to the above configuration, by arranging the end panels on both the top and bottom sides, the first and second side panels can be positioned at both the top and bottom ends. This makes it possible to stabilize the shape of the packaging container. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view of a packaging container in which an item to be packaged is packaged in a first embodiment. [Figure 2] FIG. 2 is a development view of the packaging container of the first embodiment. [Figure 3] FIG. 2 is a diagram for explaining the assembly of the packaging container of the first embodiment. [Figure 4] FIG. 4 is a diagram illustrating the assembly of the packaging container of the first embodiment following FIG. 3. [Figure 5] FIG. 5 is a diagram illustrating the assembly of the packaging container of the first embodiment following FIG. 4. [Figure 6] FIG. 2 is a plan view of the package with the top plate open. [Figure 7] FIG. 10 is a perspective view of a packaging container in which an item to be packaged is packaged in a second embodiment. [Figure 8] FIG. 10 is a development view of a packaging container according to a second embodiment. [Figure 9] FIG. 10 is a diagram for explaining the assembly of a packaging container according to a second embodiment. [Figure 10] FIG. 10 is a plan view of the packaging container of the third embodiment with the top end plate open. [Figure 11] FIG. 10 is a plan view of a modified packaging container with its upper end plate open.

[0019] (First Example) As shown in Fig. 1, the packaging container 10 packages the packaged item 100 in an exposed state. The packaging container 10 is used to transport the packaged item 100 and display the packaged item 100 in a store. The uses of the packaging container 10 are not limited to transportation and display, and it may also be used for protection, storage, etc. The front-to-back, left-to-right, and up-to-down directions included in this specification are defined for ease of explanation and do not necessarily define the posture during actual use.

[0020] As shown in Figure 2, the packaging container 10 is produced by folding a single flat, unfoldable body BL1 along multiple fold lines. Each of the multiple fold lines has at least one of a groove and a slit along the fold line to allow for easy folding along the fold line. The multiple fold lines are represented by thin dashed lines. The packaging container 10 includes a back panel 18, a pair of side panels 20, 30, an upper end panel 14, a lower end panel 16, and a pair of support portions 22, 32. In Figure 2, the unfoldable body BL1 is shown so that the back surface of the back panel 18 can be seen.

[0021] The back panel 18 has a rectangular, flat plate shape. The back panel 18 has an opening 18a at its upper end that penetrates the back panel 18. The side panels 20 are connected to the back panel 18 via a fold line 60 that extends in the vertical direction at one edge of the back panel 18. The side panels 20 have a rectangular, flat plate shape. The lower edges of the side panels 20 are located at the same height as the lower edge of the back panel 18. The upper edges of the side panels 20 are located lower than the upper edge of the back panel 18. In other words, the back panel 18 protrudes upward from the side panels 20. The side panels 20 have an insertion hole 50. The insertion hole 50 has a semicircular insertion hole 50a and a pair of slits 50b that extend from the insertion hole 50a along the fold line 60. The pair of slits 50b include a slit that extends upward from the upper end of the insertion hole 50a and a slit that extends downward from the lower end of the insertion hole 50a.

[0022] The support portion 22 is connected to the side panel 20 via a fold line 64 extending in the vertical direction at the edge (front end of the packaging container 10) opposite the back panel 18. The support portion 22 includes support plates 24 and 26. The support plate 24 is directly connected to the side panel 20 via the fold line 64. The support plate 24 has a rectangular flat plate shape. The length of the support plate 24 in the vertical direction is the same as the length of the side panel 20. The support plate 26 is connected to the side panel 20 via a fold line 68 extending in the vertical direction at the edge (right end of the packaging container 10) opposite the support plate 24. The support plate 26 has a generally rectangular flat plate shape with rounded corners at the top and bottom ends of the edge opposite the support plate 24. The support plate 26 has an insertion piece 26a in the vertical center of the edge opposite the support plate 24. The insertion piece 26a protrudes from the edge of the support plate 26 opposite the support plate 24. The insertion piece 26a has approximately the same length as the insertion hole 50 in the vertical direction.

[0023] The support plates 24, 26 have an opening 22a that straddles the fold line 68. The opening 22a has a shape that follows the outer shape of the left side portion when the packaged item 100 is placed in the packaging container 10.

[0024] The side panel 30 is connected to the back panel 18 via a fold line 62 extending in the vertical direction at the other edge of the back panel 18. The side panel 30 has the same configuration as the side panel 20. That is, the side panel 30 has an insertion hole 52 similar to the insertion hole 50. The support portion 32 is connected to the side panel 30 via a fold line 66 extending in the vertical direction at the edge (the front end of the packaging container 10) located opposite the back panel 18. The support portion 32 has the same configuration as the support portion 22. That is, the support portion 32 includes support plates 34 and 36 similar to the support plates 24 and 26. The support plate 36 has an insertion piece 36a similar to the insertion piece 26a.

[0025] Similar to the opening 22a, the support plates 34, 36 have an opening 32a that straddles the fold line 70 between the support plates 34 and 36. The opening 32a has a shape that follows the outer shape of the right side portion when the packaged item 100 is placed in the packaging container 10.

[0026] The top plate 14 is connected to the side plate 30 via a fold line 72 that extends along the top edge of the side plate 30. The top plate 14 includes a main body 14b and an insert piece 14a that is connected via a fold line 74 that extends along the edge of the main body 14b opposite the side plate 20. The main body 14b extends from the side plate 30 toward the side plate 20 in the packaging container 10. The main body 14b has approximately the same length in the left-right direction as the back plate 18 in the packaging container 10. In the packaging container 10, the front edge of the main body 14b is curved so as to be concave rearward. In the packaging container 10, the rear edge of the main body 14b is located slightly forward of the rear edge of the side plate 30.

[0027] Furthermore, the lower end plate 16 is connected to the side plate 30 via a fold line 76 that extends along the lower edge of the side plate 30. The lower end plate 16 includes a main body 16b and an insert piece 16a that is connected to the main body 16b via a fold line 78 that extends along the edge of the main body 16b opposite the side plate 30. In the packaging container 10, the main body 16b extends from the side plate 30 toward the side plate 20. In the packaging container 10, the main body 16b has approximately the same length in the left-right direction as the back plate 18. In the packaging container 10, the front edge of the main body 16b is curved so as to be concave rearward. In the packaging container 10, the rear edge of the main body 16b is located on an extension of the fold line 60 of the side plate 30.

[0028] The hanging piece 12 is connected to the upper edge of the back plate 18 via a bend line. The hanging piece 12 has the same length as the back plate 18 in the left-right direction. The lower end portion 12b of the hanging piece 12 is shorter in the left-right direction than the protruding portion 12c. The hanging piece 12 is bent along the bend line and has an opening 12a that overlaps with the opening 18a when arranged so as to overlap the back plate 18.

[0029] (Method of assembling the packaging container 10) Next, a method of assembling the packaging container 10 from the unfoldable body BL1 will be described with reference to FIGS. 3 to 6. First, as shown in FIG. 3, the unfoldable body BL1 is folded so that the hanging pieces 12 overlap the back panel 18. The fold line 60 is folded to position the side panel 20 so that it extends forward from the back panel 18. The fold line 64 is also folded to position the support panel 24 so that it extends from the side panel 20 toward the side panel 30. The fold line 68 is then folded to position the support panel 26 so that it extends from the support panel 24 toward the corner defined by the side panel 20 and the back panel 18, i.e., the corner formed along the fold line 60. As a result, the side panel 20 is positioned perpendicular to the back panel 18, the support panel 24 extends from the front edge of the side panel 20 toward the right and is tilted backward, and the support panel 26 extends from the edge of the support panel 24 opposite the side panel 20 toward the left and is tilted backward. The insertion piece 26a is inserted into the insertion hole 50. The insertion piece 26a is sandwiched between a pair of slits 50b of the insertion hole 50. This allows the positions of the side plate 20 and the support plates 24, 26 relative to the back plate 18 to be maintained.

[0030] Next, as shown in FIG. 4, the folding lines 62, 66, and 70 are folded to position the side plate 30 and the support plates 34 and 36 in the same manner as the side plate 20 and the support plates 24 and 26. At this time, while positioning the side plate 30 and the support plates 34 and 36 in the same manner as the side plate 20 and the support plates 24 and 26, the left side portion of the packaged item 100 is inserted into the opening 22a. Then, when positioning the side plate 30 and the support plates 34 and 36, the right side portion of the packaged item 100 is inserted into the opening 32a. The insertion piece 36a is inserted into the insertion hole 52. The insertion piece 36a is clamped between the pair of slits in the insertion hole 52. This maintains the positions of the side plate 30 and the support plates 34 and 36 relative to the back plate 18, as shown in FIG. 5. In this state, the corner defined by support plate 24 and support plate 26 (i.e., the corner along fold line 68) abuts against the corner defined by support plate 34 and support plate 36 (i.e., the corner along fold line 70).

[0031] In this state, the lower end portion 12b of the hanging piece 12 is located below the upper ends of the side plates 20 and 30. On the other hand, the protruding portion 12c of the hanging piece 12 is located above the upper ends of the side plates 20 and 30.

[0032] Next, the fold line 74 is bent to position the insert piece 14a perpendicular to the main body 14b of the top end plate 14. The fold line 72 is also bent to rotate the top end plate 14 relative to the side plate 30. This causes the insert piece 14a to be inserted into the packaging container 10 along the inner surface of the side plate 20. As shown in FIG. 6 , the front edge of the insert piece 14a is positioned along the corner defined by the side plate 20 and the support plate 24. The rear edge of the insert piece 14a is positioned along the corner defined by the side plate 20 and the back plate 18. The insert piece 14a is inserted between the side plate 20 and the support plate 26. The edge of the side plate 20 of the support plate 26 abuts against the insert piece 14a. The rear edge of the insert piece 14a extends rearward beyond the rear end of the main body 14b, and the protruding portion 12c is positioned above the insert piece 14a. This configuration can prevent the insertion piece 14a from falling out.

[0033] The rear end edge of the main body 14b is disposed slightly forward of the rear end edges of the side plates 30. As a result, interference between the main body 14b and the hanging piece 12 is avoided.

[0034] Similarly, the fold line 76 is bent to position the insertion piece 16a perpendicular to the main body 16b of the bottom end plate 16. The fold line 76 is also bent to rotate the bottom end plate 16 relative to the side plate 30. As a result, the insertion piece 16a is inserted into the packaging container 10 along the inner surface of the side plate 20. As a result, like the insertion piece 14a, the front end edge of the insertion piece 16a is positioned along the corner defined by the side plate 20 and the support plate 24, and the rear end edge is positioned along the corner defined by the side plate 20 and the back plate 18. As a result, the edge of the support plate 26 on the side plate 20 side abuts against the insertion piece 16a. In this way, the packaging container 10 is assembled. When assembling the packaging container 10 by folding the upper end plate 14 and the lower end plate 16 relative to the back plate 18, the corners defined by the support plates 24, 26 come into contact with the corners defined by the support plates 34, 36, thereby stabilizing the shape of the support portions 22, 32. This makes it easier to insert the insertion pieces 14a, 16a.

[0035] (effect) As shown in Figure 6, in the packaging container 10, support plates 24, 34 are arranged in front of the packaged item 100, and support plates 26, 36 are arranged behind the packaged item 100. The packaged item 100 is restricted from moving forward by abutting against the support plates 24, 34, and restricted from moving backward by abutting against the support plates 26, 36. This prevents the packaged item 100 from moving forward or backward. The support plates 26, 36 are restricted from moving forward because the packaged item 100, whose forward movement is restricted by the support plates 24, 34, is arranged in front of it.

[0036] Additionally, the thickness of the packaged item 100 gradually increases in the front-to-back direction from both left-to-right ends toward the center. Support plates 24, 26 sandwich the packaged item 100 from the front and back on the left side of the center of the packaged item 100 in the left-to-right direction. This prevents the packaged item 100 from shifting to the left. Similarly, support plates 34, 36 sandwich the packaged item 100 from the front and back on the right side of the center of the packaged item 100 in the left-to-right direction. This prevents the packaged item 100 from shifting to the right.

[0037] In the upper end plate 14, the main body 14b is connected to the side plate 30, and the insert pieces 14a engage with the support plates 24, 26. Similarly, in the lower end plate 16, the main body 16b is connected to the side plate 30, and the insert pieces 16a engage with the support plates 24, 26. This stabilizes the positions of the side plates 20, 30.

[0038] In support plate 26, insertion piece 26a is inserted into insertion hole 50, and its edge is positioned at the corner between side plate 20 and back plate 18 and abuts against insertion piece 14a. Similarly, in support plate 36, insertion piece 36a is inserted into insertion hole 52, and its edge is positioned at the corner between side plate 30 and back plate 18. The support plates 26, 36 are restricted from moving by coming into contact with the packaged item 100, and the packaged item 100 is restricted from moving by coming into contact with support plates 24, 34. This allows the packaging container 10 to be maintained stably.

[0039] Furthermore, the support portions 22, 32 are constrained to each other by the corners defined by the support plates 24, 26 and the corners defined by the support plates 34, 36 abutting against each other. This makes it possible to stably maintain the positions and shapes of the support portions 22, 32. In a modified example, the corners defined by the support plates 24, 26 and the corners defined by the support plates 34, 36 may be spaced apart from each other.

[0040] The packaging container 10 can be hung and displayed by inserting a display hook or the like into the opening 18a of the back panel 18 and the opening 12a of the hanging piece 12.

[0041] Furthermore, by forming the shape of the insertion holes 50, 52 to follow the contour of the packaged item 100, it is possible to package packaged items 100 of various shapes. In particular, for a shape in which the center is thicker than the left and right ends, by sandwiching the relatively thin parts between the support plates 24, 26 and the support plates 34, 36, it is possible to restrict movement of the packaged item in the front-to-back and left-to-right directions.

[0042] (Second Example) A packaging container 210 of a second embodiment will be described with reference to Figures 7 to 9. Compared to packaging container 10, packaging container 210 has an upper end plate 214, a lower end plate 216, and a back plate 218 that are different from upper end plate 14, lower end plate 16, and back plate 18, respectively. In addition, the shapes of insertion holes 250 and 252 are different from insertion holes 50 and 52. The rest of the configuration of packaging container 210 is the same as that of packaging container 10. That is, the packaging container 210 has parts 220, 222, 224, 226, 230, 232, 234, 236, 222a, 232a, 226a, 236a, 260, 262, 264, 266, 268, 270 that are similar to parts 20, 22, 24, 26, 30, 32, 34, 36, 22a, 32a, 26a, 36a, 60, 62, 64, 66, 68, 70 of the packaging container 10.

[0043] The back panel 218 has a rectangular flat plate shape with the same vertical length as the side panels 220, 230. A slit-shaped insertion hole 250 is arranged on a fold line 260 at the boundary between the back panel 218 and the side panel 220. An insertion piece 226a is inserted into the insertion hole 250. A slit-shaped insertion hole 252 is arranged on a fold line 262 at the boundary between the back panel 218 and the side panel 230. An insertion piece 236a is inserted into the insertion hole 252.

[0044] The upper end plate 214 is connected to the back plate 218 via a fold line 272 located on the upper edge of the back plate 218. The upper end plate 214 includes a main body 214b and a pair of insertion pieces 214a connected to both left and right end edges of the main body 214b via fold lines. The main body 214b extends forward from the back plate 218 in the packaging container 210. In the packaging container 210, the front edge of the main body 214b is curved so as to be concave rearward.

[0045] The lower end plate 216 is connected to the back plate 218 via a fold line 276 located on the lower edge of the back plate 218. The lower end plate 216 includes a main body 216b and a pair of insertion pieces 216a connected to both left and right end edges of the main body 216b via fold lines. The main body 216b extends forward from the back plate 218 in the packaging container 210. In the packaging container 210, the front edge of the main body 216b is curved so as to be concave rearward.

[0046] (Method of assembling the packaging container 210) The method of assembling the packaging container 210 is similar to the method of assembling the packaging container 10: the unfoldable body BL2 is folded along the fold lines 260, 264, and 268, and the side plates 220 and support parts 222 (i.e., support plates 224 and 226) are arranged. At this time, the insertion piece 226a is inserted into the insertion hole 250, and the side plates 220 and support parts 222 are held in place. Also, similar to the method of assembling the packaging container 10, the unfoldable body BL2 is folded along the fold lines 262, 266, and 270, and the side plates 230 and support parts 232 (i.e., support plates 234 and 236) are arranged. At this time, the packaged article 100 is arranged in the openings 222a and 232a. Also, the insertion piece 236a is inserted into the insertion hole 252, and the side plates 230 and support parts 232 are held in place. This completes the assembly as shown in FIG. 9.

[0047] Next, the pair of insert pieces 214a of the top end panel 214 are folded toward the main body 214b, and the main body 214b is folded toward the back panel 218 at the folding lines 272, thereby inserting each of the pair of insert pieces 214a into the packaging container 210 along the inner surfaces of the side panels 220, 230. As a result, a portion of the front edge of one of the insert pieces 214a is positioned along the corner defined by the side panel 220 and the support panel 224. As a result, the position of the side panel 220 relative to the back panel 218 is determined by the engagement of the support panel 224 with the insert pieces 214a. Similarly, a portion of the front edge of the other insert piece 214a is positioned along the corner defined by the side panel 230 and the support panel 234. As a result, the position of the side panel 230 relative to the back panel 218 is determined by the engagement of the support panel 234 with the insert pieces 214a.

[0048] The rear edge of one of the insertion pieces 214a is located forward of the corner defined by the side plate 220 and the back plate 218. As a result, the edge of the support plate 226 abuts against the side plate 220 and the back plate 218 at the corner defined by the side plate 220 and the back plate 218. Similarly, the rear edge of the other insertion piece 214a is located forward of the corner defined by the side plate 230 and the back plate 218. As a result, the edge of the support plate 236 abuts against the side plate 230 and the back plate 218 at the corner defined by the side plate 230 and the back plate 218. This allows the support plates 226, 236 to be properly positioned.

[0049] Similarly, the pair of insert pieces 216a of the lower end plate 216 are bent toward the main body 216b, and the main body 216b is bent toward the back plate 218 along the bending line 276, so that the pair of insert pieces 216a are inserted into the packaging container 210 along the inner surfaces of the side plates 220 and 230. This holds the side plates 220 and 230 and the support portions 222 and 232 at both the upper and lower ends.

[0050] (Third Example) A packaging container 310 of a third embodiment will be described with reference to FIG. 10 . Compared to the packaging container 10, the packaging container 310 differs in the configuration of support portions 322 and 332 from the configuration of support portions 22 and 32. The support portion 322 includes support plates 324 and 326. The support plate 324 is directly connected to the side plate 20 via a fold line 64. The support plate 324 has a rectangular flat plate shape. In the vertical direction, the length of the support plate 324 is the same as the length of the side plate 20. The support plate 326 is connected to the edge located opposite the support plate 324 (the right end of the packaging container 10) via a fold line 368 extending in the vertical direction. The support plate 326 has a rectangular flat plate shape. The support plate 326 is arranged to overlap the back plate 18. The support plate 324 has an opening shaped to follow the outer shape of the left side portion when the packaged item 300 is placed in the packaging container 310. The support plate 326 does not have any openings through which the packaged items 300 are placed.

[0051] Support plate 326 has an insertion piece similar to insertion piece 26a in the vertical center of the edge opposite support plate 324. Support plate 326 is positioned behind item 300 to be packaged. With this configuration, support plate 326 is prevented from moving forward by item 300 to be packaged located in front of it. In addition, item 300 to be packaged comes into contact with back plate 18 via support plate 326, thereby restricting rearward movement.

[0052] The support portion 332 has support plates 334 and 336 similar to the support plates 324 and 326, respectively. The support plate 334 is directly connected to the side plate 30 via a folding line 66. With this configuration, the packaging container 310 can stably hold the packaged item 300.

[0053] 11, the support portion 322 of the packaging container 310 may include a support plate 328 between the support plates 324 and 326. The support plate 328 may be connected to the support plate 324 via a fold line 368a and to the support plate 326 via a fold line 368b. The support plate 328 may extend rearward from the edge of the support plate 324 toward the back plate 18. The support plate 328, together with the support plate 324, may have an opening extending from the support plate 324 beyond the fold line 368a, the opening having a shape that follows the outer shape of the left side portion when the packaged item 300 is placed in the packaging container 310. Similarly, the support portion 332 may include a support plate 338 between the support plates 334 and 336.

[0054] In addition to support plate 328, one or more support plates may be disposed between support plate 324 and support plate 326 via bending lines.

[0055] Although the embodiments of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and alterations of the specific examples exemplified above.

[0056] In the packaging container 10, the support portion 22 and the support portion 32 are arranged symmetrically. However, the configurations of the support portion 22 and the support portion 32 may not be arranged symmetrically, and may have different configurations. For example, the support plate 26 of the support portion 22 may be arranged parallel to the front-rear direction toward the back plate 18 and abut against the back plate 18. The same applies to the packaging container 210.

[0057] The packaging container 10 may not have one of the upper end plate 14 and the lower end plate 16. The same applies to the packaging container 210.

[0058] Furthermore, the technical elements described in this specification or drawings may exhibit technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technologies illustrated in this specification or drawings simultaneously achieve multiple objectives, and achieving one of those objectives is itself technically useful. [Explanation of symbols]

[0059] 10: Packaging container, 12: Hanging piece, 12a: Opening, 12b: Lower end part, 12c: Projecting part, 14: Upper end plate, 14a: Insertion piece, 14b: Main body, 16: Lower end plate, 16a: Insertion piece, 16b: Main body, 18: Back plate, 18a: Opening, 20: Side plate, 22: Support part, 22a: Opening, 24: Support plate, 26 : Support plate, 26a : Insertion piece, 30 : Side plate, 32 : Support part, 32a : Opening, 34 : Support plate, 36 : Support plate, 36a : Insertion piece, 50 : Insertion hole, 50a : Insertion hole, 50b : Slit, 52 : Insertion hole, 100 : Item to be packaged

Claims

1. a back panel having a pair of edges extending in the vertical direction at both left and right ends; a first side plate extending forward from one of the pair of edges; a second side plate extending forward from the other edge of the pair of edges; a first support portion extending from a position of the first side plate spaced from the back plate via a first fold line; a second support portion extending from a position of the second side plate spaced apart from the back plate via a second fold line; an end plate disposed on at least one of an upper end and a lower end of the first support portion and the second support portion, the first support portion includes a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, the second support portion includes a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, The first support portion has a first opening in which the packaged item is placed, The second support portion has a second opening in which the packaged item is placed, The first support plate is positioned in front of the packaged item placed in the first opening to restrict the packaged item from moving forward beyond the first support plate, The third support plate is positioned in front of the packaged item placed in the second opening to restrict the packaged item from moving forward beyond the third support plate, The end plate is connected to the second side plate via a bending line, a main body extending from the second side plate toward the first side plate, the main body having a front end edge positioned forward of the first opening and the second opening when viewed from above; and an insertion piece connected to the main body via a bend line; The insert extends along the inner surface of the first side plate, The second support plate is located behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, The fourth support plate is located behind the packaged item placed in the second opening and restricts the second support portion from moving forward relative to the packaged item, the fourth support plate extends toward a boundary between the back plate and the second side plate and abuts against the back plate and the second side plate; an insertion hole disposed on the boundary between the back panel and the second side panel; The fourth support plate is arranged on the edge opposite to the fourth fold line and has a protrusion that is inserted into the insertion hole.

2. a back panel having a pair of edges extending in the vertical direction at both left and right ends; a first side plate extending forward from one of the pair of edges; a second side plate extending forward from the other edge of the pair of edges; a first support portion extending from a position of the first side plate spaced from the back plate via a first fold line; a second support portion extending from a position of the second side plate spaced apart from the back plate via a second fold line; an end plate disposed on at least one of an upper end and a lower end of the first support portion and the second support portion, the first support portion includes a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, the second support portion includes a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, The first support portion has a first opening in which the packaged item is placed, The second support portion has a second opening in which the packaged item is placed, The first support plate is positioned in front of the packaged item placed in the first opening to restrict the packaged item from moving forward beyond the first support plate, The third support plate is positioned in front of the packaged item placed in the second opening to restrict the packaged item from moving forward beyond the third support plate, The second support plate is located behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, The fourth support plate is located behind the packaged item placed in the second opening and restricts the second support portion from moving forward relative to the packaged item, The end plate is It is connected to the back panel via a fold line, A main body extending forward from the back panel and a pair of insert pieces connected to the main body via a folding line, one of the pair of insert pieces extends along the inner surface of the first side plate and engages with the first support plate; the other of the pair of insert pieces extends along the inner surface of the second side plate and engages with the third support plate; the fourth support plate extends toward a boundary between the back plate and the second side plate and abuts against the back plate and the second side plate; an insertion hole disposed on the boundary between the back panel and the second side panel; The fourth support plate is arranged on the edge opposite to the fourth fold line and has a protrusion that is inserted into the insertion hole.

3. a back panel having a pair of edges extending in the vertical direction at both left and right ends; a first side plate extending forward from one of the pair of edges; a second side plate extending forward from the other edge of the pair of edges; a first support portion extending from a position of the first side plate spaced from the back plate via a first fold line; a second support portion extending from a position of the second side plate spaced apart from the back plate via a second fold line; an end plate disposed on at least one of an upper end and a lower end of the first support portion and the second support portion, the first support portion includes a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, the second support portion includes a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, The first support portion has a first opening in which the packaged item is placed, The second support portion has a second opening in which the packaged item is placed, The first support plate is positioned in front of the packaged item placed in the first opening to restrict the packaged item from moving forward beyond the first support plate, The third support plate is positioned in front of the packaged item placed in the second opening to restrict the packaged item from moving forward beyond the third support plate, The end plate is connected to the second side plate via a bending line, a main body extending from the second side plate toward the first side plate, the main body having a front end edge positioned forward of the first opening and the second opening when viewed from above; and an insertion piece connected to the main body via a bend line; The insert extends along the inner surface of the first side plate, The second support plate is located behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, The fourth support plate is located behind the packaged item placed in the second opening and restricts the second support portion from moving forward relative to the packaged item, A packaging container, wherein the distance between the third fold line and the fourth fold line is shorter than each of the distance between the first side panel and the third fold line and the distance between the second side panel and the fourth fold line.

4. a back panel having a pair of edges extending in the vertical direction at both left and right ends; a first side plate extending forward from one of the pair of edges; a second side plate extending forward from the other edge of the pair of edges; a first support portion extending from a position of the first side plate spaced from the back plate via a first fold line; a second support portion extending from a position of the second side plate spaced apart from the back plate via a second fold line; an end plate disposed on at least one of an upper end and a lower end of the first support portion and the second support portion, the first support portion includes a first support plate extending toward the second side plate via the first fold line, and a second support plate connected to an edge of the first support plate on the second side plate side via at least a third fold line, the second support portion includes a third support plate extending toward the first side plate via the second fold line, and a fourth support plate connected to an edge of the third support plate on the first side plate side via at least a fourth fold line, The first support portion has a first opening in which the packaged item is placed, The second support portion has a second opening in which the packaged item is placed, The first support plate is positioned in front of the packaged item placed in the first opening to restrict the packaged item from moving forward beyond the first support plate, The third support plate is positioned in front of the packaged item placed in the second opening to restrict the packaged item from moving forward beyond the third support plate, The second support plate is located behind the packaged item placed in the first opening and restricts the first support portion from moving forward relative to the packaged item, The fourth support plate is located behind the packaged item placed in the second opening and restricts the second support portion from moving forward relative to the packaged item, The end plate is It is connected to the back panel via a fold line, A main body extending forward from the back panel and a pair of insert pieces connected to the main body via a folding line, one of the pair of insert pieces extends along the inner surface of the first side plate and engages with the first support plate; the other of the pair of insert pieces extends along the inner surface of the second side plate and engages with the third support plate; A packaging container, wherein the distance between the third fold line and the fourth fold line is shorter than each of the distance between the first side panel and the third fold line and the distance between the second side panel and the fourth fold line.

5. the second support plate extends from the third fold line toward the back plate, The first opening is disposed in the first support plate and the second support plate across the third fold line, The second support plate abuts against at least one of the back plate, the first side plate, and the insert piece, and is positioned behind the packaged item placed in the first opening to restrict the packaged item from moving rearward beyond the second support plate, the fourth support plate extends from the fourth fold line toward the back plate, The second opening is disposed in the third support plate and the fourth support plate across the fourth fold line, 5. The packaging container according to claim 1, wherein the fourth support plate abuts against at least one of the back plate, the second side plate, and the insertion piece, and is positioned behind the packaged item placed in the second opening, thereby restricting the packaged item from moving rearward beyond the fourth support plate.

6. The packaging container according to claim 1 , wherein the end plates are disposed at the upper and lower ends of the first support portion and the second support portion, respectively.

7. The packaging container according to claim 1 or 3, wherein the insert engages with the first support plate and the second support plate.

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