JP3239027B2 - Packaging box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box, and more particularly to a packaging box suitable for being assembled from a single continuous corrugated board.

[0002]

2. Description of the Related Art Conventionally, when a small electronic device such as a CD (compact disk) player is packaged and distributed for distribution, conventionally, as shown in FIG. That is, a molded container 1 made of a polystyrene resin is prepared, and the CD player 2, the AC adapter 3, the connection cord 4, and the like are stored in the molded container 1, and the molded container 1 is further stored in the individual packaging box 5. I was

As another packaging form, as shown in FIG. 15, a CD player 2 is housed in a molding container 1 made of styrene foam resin, and an accessory case 6 is prepared separately from the molding container 1. AC adapter in 6,
It was designed to store accessories such as headphones. Then, the molded container 1 and the accessory case 6 are stored in the individual packaging box 5.

[0004]

SUMMARY OF THE INVENTION Molded containers made of styrene foam resin and packaging containers made of other plastic-based materials used for protecting small electronic devices such as CD players from external impacts are substances that cause pollution. Or cause environmental pollution. For this reason, it is required to switch such packaging containers to packaging containers made of paper.

Further, according to the conventional container having such a structure, there are many types of containers for packaging, thereby increasing the packaging cost and increasing the number of man-hours for packaging.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and prevents garbage pollution and environmental pollution from being caused. It is an object of the present invention to provide a packaging box capable of reducing man-hours.

[0007]

According to the present invention, flaps are connected to upper ends of a pair of opposing side walls of a box body having a bottom wall formed at the lower ends of four side walls via bending lines. A first upper surface plate extending substantially horizontally from the upper end of the side wall where the flaps are continuously provided to the upper end of the opposite side wall, and a front end portion of the first upper surface plate. A first inner wall extending continuously toward the bottom wall and having a projecting piece abutting against the bottom plate; and a first inner wall connected to a lower end portion of the first inner wall and spaced apart from the bottom wall. An inner bottom wall and a contact plate, which is provided at an end of the inner bottom wall and has a protruding piece whose tip abuts on the bottom wall, and furthermore, an abutting plate rising upward are sequentially provided. Is bent opposite to the upper end of the side wall where the flap is connected. A second upper surface plate extending substantially horizontally toward the upper end of the side wall of the second upper surface plate; and a second upper surface plate continuously connected from a tip of the second upper surface plate, extending toward the bottom wall, and arranged to be in contact with the contact plate. The inner wall 2 is connected to the inner wall 2.

An article may be stored in the recess formed by the one flap, which is formed by the first inner wall, the inner bottom wall, and the second inner wall.
Further, accessories may be accommodated in a space surrounded by the side wall on which the other flap is continuously provided, the second upper plate, and the second inner wall as necessary.

A lid plate and an inner lid are connected to the upper ends of the other pair of side walls not provided with the pair of flaps, respectively, and the upper opening is closed by the lid plate and the inner lid. The portion closing the upper opening has a double structure. In addition, a locking piece is connected to the tip of the lid plate and the inner lid so that it can be bent, and these locking pieces are inserted so as to be overlapped inside the side plate where the inner lid and the lid plate are connected. Then, a double structure is formed between the corresponding side walls, the shock absorption is enhanced by the double structure, and the lid plate and the inner lid are respectively locked to form a pair having no flap. The locking pieces are respectively located inside the side walls of the base member, so that these side walls and the locking pieces
It becomes a heavy structure.

[0010]

The impact applied to the side wall on which one flap is formed is absorbed in the shock absorbing space formed by the side wall, the first upper plate, and the first inner side wall.
The impact applied to the side wall on which the other flap is formed is absorbed in an impact absorbing space surrounded by the side wall, the second upper plate, and the second inner wall. The impact applied to the bottom is absorbed by a shock absorbing space formed between the bottom wall and an inner bottom wall having a predetermined space with respect to the bottom wall.

The impact applied to the other pair of side walls not provided with the pair of flaps can be achieved by providing locking pieces at the tip of the lid plate and the inner lid, respectively.
The double structure of these locking pieces and the side walls on which no flaps are provided allows absorption. When the upper opening is closed by a lid plate and an inner lid provided at the upper ends of a pair of side walls where no flap is provided, an impact from above is absorbed by the double structure of the lid plate and the inner lid. Will be done.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. FIG. 1 is an exploded view of a corrugated board 10 for assembling a packaging box according to a first embodiment of the present invention. This corrugated board 1
0 denotes four side walls of the packaging box, that is, four side plates 11, 12, 1;
3 and 14, which are foldably connected to each other via a fold line 15. A joining piece 17 is continuously provided on the left side plate 11 via a bending line 16.

At the lower ends of the side plates 11 and 13, bottom plates 22 and 23 forming a bottom wall are respectively connected via bending lines 21 so as to be bendable. On the other hand, side plate 1
An auxiliary bottom plate 25, which also constitutes a bottom wall, is connected to the lower ends of the two and 14 via a bending line 24 so as to be bent. Further, joints 27 are continuously provided on the lower right sides of the bottom plates 22 and 23 via diagonal bending lines 26, and the joints 27 are glued to the adjacent auxiliary bottom plate 25. , Bottom plates 22, 23 at fold line 26
When this is folded, the packaging box can be folded flat.

A lid plate 32 is connected to the upper end of the side plate 11 via a bending line 31. On the other hand, an inner lid 33 is continuously provided on the upper end side of the side plate 13 via a bending line 31. A locking piece 35 is continuously provided at a distal end of the lid plate 32 via a bending line 34, and a locking piece 36 is continuously provided at a distal end of the inner lid 33 via a bending line 34. . A semicircular cut 37 is formed at the base of the locking piece 36. An engagement hole 38 is formed in the root portion of the inner lid 33 along the bending line 31, and the locking piece 35 on the distal end side of the lid plate 32 is inserted into the engagement hole 38.

A flap 43 is connected to the upper end of the side plate 12 via a bending line 42. A flap 44 is formed on the upper end side of the side plate 14 via a bending line 42. Note that the length of the flap 44 is larger than that of the flap 43.

The flap 43 on the upper end side of the side plate 12 is provided with a bending line 45 extending in the lateral direction.
A second upper surface plate 51 is formed on the base end side, and a second inner wall 52 is formed on the distal end side. Cuts 46, 47, and 48 are formed so as to intersect the bending line 45.
Also, bending lines 49 and 50 indicated by dotted lines in the drawing are formed between the cuts 46 and 47 or between 47 and 48.

Next, on the flap 44 on the side plate 14 side, a bent line 54 extending in the lateral direction and a pair of bent lines 55 parallel to the bent line 54 are formed. A U-shaped notch 5 is formed at the center of a pair of parallel bending lines 55.
6 are formed, and the bending line 55 is missing in the cut 56. And these cuts 56
Projecting pieces 57 are formed to face each other. The flap 44 forms a first upper surface plate 53, a first inner side wall 58, an inner bottom wall 59, and a contact plate 64.

Next, the corrugated board 1 having the above structure
The operation of assembling the packaging box as shown in FIG. Side plates 11 to 14 at bending line 15
Are bent together, and the joining piece 17 is glued to the end of the opposite side plate 14 and joined. Then, the bottom opening is closed by the bottom plates 22 and 23 and the auxiliary bottom plate 25. In this case, the joint 27 of the bottom plates 22 and 23 is glued to the auxiliary bottom plate 25 to form a foldable bottom wall. This assembles a rectangular parallelepiped packaging box having an open top as shown in FIG.

Then, as shown in FIG. 3, the flap 43 is bent inward. That is, the flap 43 is bent inward at the bending line 42 so that the second top plate 5
1 is horizontal, and the flap 43 is bent at a bending line 45 at a right angle, and the second inner wall 52 is erected. Further, the bending line 4 is formed by the cuts 46, 47 and 48.
Bend the part between 9, 50 inward. Then, the AC adapter 60 is housed inside a space surrounded by the side plate 12, the second upper surface plate 51, and the second inner wall 52.

Thereafter, the flap 44 is bent inward.
That is, the flap 44 is bent at the bending line 42 to make the first upper plate 53 horizontal, and the bending line 5
4, the first inner wall 58 is bent toward the inside of the packaging box, and the pair of parallel bending lines 55 is bent to make the inner bottom wall 59 of the flap 44 parallel to the bottom plates 22 and 23. To do. That is, at this time, the tip of the projecting piece 57 formed by the cut 56 is brought into contact with the upper surfaces of the bottom plates 22 and 23, and the portion of the inner bottom wall 59 between the parallel folding lines 55 of the flap 44 is 23 and in a predetermined space. Then, a CD player 61 is arranged on the inner bottom wall 59 of the flap 44 as shown in FIG. At this time, a manual 62 and a connection cord 63 are provided in the space below the inner bottom wall 59 of the flap 44 and on the side of the first inner wall 58 as shown in FIG.
May be stored respectively.

With the CD player 61, the AC adapter 60, the manual 62, the connection cord 63, etc. stored in this manner, the inner lid 33 is first bent and locked at the bending line 31 as shown in FIG. The piece 36 is inserted inside the side plate 11, and then the cover plate 32 is bent over the inner cover 33, and the locking piece 35 is inserted into the side plate 13 through the insertion hole 38. This makes it possible to package the CD player 61 in a packaging box made of the cardboard board 10.

As described above, the packaging box according to the present embodiment is composed of one corrugated cardboard board 10, has four side plates 11 to 14, and has an opening at the top. Cuts 46 to 48 and bending lines 45 and 49 are provided in the flap 43 which is continuously provided. Then, after storing the AC adapter 60 inside the side plate 12, the flap 43 is folded and the cuts 46, 47,
The AC adapter 60 is fixed by folding the bending lines 49 and 50 between the insides 48.

Further, bending lines 54 and 55 and a projecting piece 57 are provided on a flap 44 connected to the upper end of the side plate 14,
After being folded into the packaging box, the first inner wall 58 and the inner bottom wall 59
The CD player 61 is accommodated in a recess formed by the contact plate 64 and the contact plate 64. The lower part of the flap 44 is a storage space for components other than the AC adapter 60, for example, the manual 62 and the connection cord 63. In this manner, the components necessary for the CD player 61 can be stored together with the CD player 61 as an integrated packaging box.

According to such a packaging form, the CD player 61 housed in the recess surrounded by the first inner side wall 58, the inner bottom wall 59, and the contact plate 64 formed by the flaps 44, in particular, In particular, the impact from below is absorbed by the space formed by the bottom plates 22, 23 and the inner bottom wall 59 of the flap 44. The upper impact is absorbed by the double structure of the lid plate 32 and the inner lid 33. 6 is absorbed by a shock absorbing space formed by the second upper surface plate 51 and the second inner wall 52 of the flap 43 accommodating the AC adapter 60. In addition, a shock from the right is absorbed by a shock absorbing space formed by the first upper surface plate 53 and the first inner wall 58 of the flap 44 accommodating the connection cord 63.

The impact from the front side is absorbed by the double structure of the locking pieces 35 of the side plate 13 and the cover plate 32. The impact from the back side is absorbed by the locking piece 36 of the inner lid 33 and the side plate 11. That is, the CD player 61 housed in the packaging box is protected from shocks from all six directions by a shock absorbing space or a shock absorbing portion formed by laminating two or more cardboard boards. As a result, it is possible to reliably protect the CD player 61 from external impact.

Next, a modification of the above embodiment will be described with reference to FIGS.
It will be explained by. The feature of this modification is that a bent piece 67 is formed at the tip end of the locking piece 35 provided continuously with the lid plate 32 via a bending line 66, and the bent piece 67 is bent at the tip end of the inner lid 33. A bending piece 67 is continuously provided via a bending line 66 at the tip of the locking piece 36 continuously provided via the wire 34,
The bent pieces 67 form the locking pieces 35 and 36 in a double structure. Further, a U-shaped cut 68 is formed in the inner lid 33, and the root of the cut 68 is connected by a bending line 69, so that the folded piece 70 overlaps the inside of the inner lid 33. .

According to such a configuration, the cover plate 32
Since the bent piece 67 is formed on the locking piece 35 formed at the tip of the side plate, an impact from the front side is applied to the side plate 13,
It is absorbed by the shock absorbing portion having the triple structure of the locking piece 35 and the bent piece 67. Similarly, a shock from the rear side is absorbed by a shock absorbing portion having a triple structure of the side plate 11, the locking piece 36, and the bent piece 67. In addition, a shock from above is absorbed by a shock absorbing portion having a triple structure of the cover plate 32, the inner cover 33, and the folded piece 70. Therefore, according to such a configuration, the shock absorbing ability of the shock absorbing portion formed by stacking corrugated cardboard plates is further improved.

Next, a second embodiment will be described with reference to FIGS. FIG. 9 is an exploded view of a corrugated board 75 for assembling the packaging box according to this embodiment. The corrugated board 75 has a bottom plate 76 constituting a bottom wall at the center thereof. A front side plate 78 and a rear side plate 79 are connected to upper and lower portions of the bottom plate 76 via bending lines 77, respectively. On the other hand, on both sides of the bottom plate 76, a left side plate 81 and a right side plate 82 are respectively connected to each other via a bending line 80.

A folded piece 86 is connected to the front end of the front side plate 78 via two bending lines 85 parallel to each other, and a protruding piece 87 is connected to the tip of the folded piece 86. ing. An engagement hole 88 for receiving the projecting piece 87 is formed along a bending line 77 at the boundary between the bottom plate 76 and the side plate 78.

On the other hand, a lid plate 90 is connected to the upper end of the rear side plate 79 via a bending line 89. The locking piece 9 is attached to the tip of the lid plate 90 via a bending line 91.
2 are connected in a bendable manner.

On both sides of the left and right side plates 81 and 82, folding plates 97 are respectively provided so as to be bent via bending lines 96. Protrusions 98 are formed at the distal ends of these folded plates 97 and at the lower ends thereof. The projection 98 of the folding plate 97 overlapping the side plate 78 is inserted into the engagement hole 88 and locked, and the projection 98 of the folding plate 97 folded inside the side plate 79 is inserted into the engagement hole 99. It is designed to be inserted and locked.

A bending line 102 is provided at the tip of the left side plate 81.
The second flap 103 is continuously provided via the second flap 103. A bending line 104 is provided in the flap 103 in the lateral direction, and the bending line 104 forms a second upper surface plate 108 and a second inner wall 109. Cuts 105 are formed on both sides of the flap 103 along side edges, and between the cuts 105 and the side edges, bending lines 106 and 107 extending in the lateral direction are formed.

At the distal end of the right side plate 82, two parallel bending lines 111 are formed, and at the distal end side of these bending lines 111, flaps 112 are formed. A pair of trapezoidal cuts 113 are formed on the first flap 112 so as to face each other, and a bending line 114 is formed to extend from the end of these cuts 113. The area inside the cut 113 forms a projecting piece 115. Then, the first upper plate 110 and the first inner wall 11 are
6, an inner bottom wall 117 and a contact plate 118 are formed.

Next, the corrugated cardboard plate 7 having the above-described configuration will be described.
5 will be described. FIG.
As shown in FIG. 0, four side plates 78, 7
9, 81 and 82 are bent at bending lines 77 and 80, respectively. Then, the folding plates 97 provided on both sides of the side plates 81 and 82 are bent at the bending line 96 to overlap the inside of the side plates 78 and 79, and the projections 98 of these folding plates 97 are engaged with the engaging holes 88. , 99 and locked. Next, the folded piece 86 is bent inward by the bending line 85 to overlap the inside of the folded plate 97, and the protruding piece 87 is inserted into the engaging hole 88 and locked, and the folded plates 97 on both sides are fixed to the side plate 78. And the folded piece 86 for holding.

Next, at the bending line 102, the flap 1
As shown in FIG. 11, a shock absorbing space is formed by bending a second upper surface plate 108 and a second inner side wall 109 formed by the flap 103 by a bending line 104 extending in the lateral direction of the flap 103 while bending the third flap 103. To form
Moreover, cuts 105 formed on both sides along side edges
Then, both ends are folded inward using the bending lines 106 and 107 so that the accessories stored in the flap 103 are positioned and fixed.

Next, a pair of bending lines 1
11, the flaps 112 connected to each other are bent to the inside of the packaging box, and the flaps 112 are bent at bending lines 114 so that a pair of protruding pieces 115 stand upright with respect to the bottom plate 76. As a result, the inner wall 117 of the flap 112 has a predetermined space between itself and the bottom plate 76 between the bending lines 114 on both sides, and the first
A concave portion is formed by the inner side wall 116, the inner bottom wall 117, and the contact plate 118, and a shock absorbing space is formed on the bottom side. Also, the first inner wall 1 of the flap 112
16, a shock absorbing space is also formed on the right side of the packaging box and inside the side plate 82.

In such a packaging box, the flap 1
The accessories are stored inside or below 03 and 112, respectively, and the main merchandise is stored on the inner bottom wall 117 in the recess formed by the flap 112.
After that, the cover plate 90 is bent at the bending line 89 and closed, and the cover plate 90 is locked by the locking pieces 92.

According to such a packaging box, the shock from the bottom is absorbed in the shock absorbing space formed between the bottom plate 76 and the inner bottom wall 117 of the flap 112. Further, a shock from the left is absorbed in a shock absorbing space formed by the second upper surface plate 108 and the second inner wall 109 of the flap 103. In addition, a shock from the right is absorbed in a shock absorbing space formed by the first upper surface plate 110 of the flap 112 and the first inner wall 116.

The impact from the front is applied to the side plate 78 and the folding plate 9.
7. It is absorbed by the impact absorbing portion of the triple structure of the folded piece 86. In addition, the impact from the back side is applied to the side plate 79 and the folding plate 9.
7 is absorbed by the double structure shock absorbing portion. That is, the impact is absorbed by the impact absorbing space or the impact absorbing portion having a structure of two or more layers, except for the upper portion where the impact must be received by the single-layered cover plate 90. Therefore, such a packaging box can sufficiently protect the goods inside, especially when a very large impact is not applied from the top.

Next, a modification of the second embodiment will be described with reference to FIGS. In this modified example, a folded piece 120 is continuously provided on an upper end of a side plate 79 via a pair of bent lines 119 parallel to each other. Then, a projecting piece 121 is formed at the tip of the folded piece 120.

On the left flap 103, three cuts 124, 125, and 126 are formed in parallel with each other, and these cuts 124 to 126 are formed.
The bending lines 127 to 131 are formed so as to traverse.

Therefore, this packaging box is not provided with a cover plate, and has the same structure on the rear side as on the front side. That is, the folded plate 97 connected to the front ends of the side plates 81 and 82 on both sides via the bending line 96 is connected to the back side plate 79 and the folded piece 1.
20 so as to be held therebetween. Therefore, although the upper portion remains open, the rear side can absorb the impact by the triple structure of the rear side plate 79, the folding plate 97, and the folded piece 120, as in the front side. It becomes a shock absorbing part.

The flap 103 has three cuts 124
The central portion is bent inward in the longitudinal direction by the inside lines 126 to 130 and the bending lines 127 to 130, whereby the flap 103 is housed inside the second upper plate 108 and the second inner side wall 109. To secure the accessories that are used.

In such a packaging box, as shown in FIG. 13, the first inner side wall 116 and the inner bottom wall 1 of the flap 112 are provided.
17, for example, the CD player 61 is housed in the recess formed by the contact plate 118. Note that the accessory may be stored inside the second inner wall 109 of the flap 103 or inside the first inner wall 116 of the flap 112. Then, such a packaging box is further housed in a packaging box 134 constituting an exterior box with the upper opening kept open. Therefore, such a packaging form is suitable especially when no impact is applied from above.

[0045]

As described above, according to the present invention, a pair of flaps are connected to each other at the upper ends of the side walls facing each other of the packaging box via bending lines, and one of the flaps is connected to the flaps. A first upper plate extending substantially horizontally from the upper end of the side wall to the upper end of the opposing side wall, and a bottom wall connected to a tip end of the first upper plate and extending toward the bottom wall; A first inner wall having a protruding piece abutting on the inner wall, an inner bottom wall spaced apart from the bottom wall and substantially parallel to the bottom wall; And a contact plate which has a projecting piece which comes into contact with the wall and which stands up, respectively, on the other side of the flap, on the other side facing the upper end of the side wall on which this flap is provided continuously A second upper plate extending substantially horizontally toward the upper end of the side wall of the second upper surface; Provided continuously to the tip extends toward the bottom wall, first arranged in contact with the contact plate 2
And the inner wall of each of them are connected to each other.

Therefore, according to the present invention, the impact applied to the side plate provided with one flap is formed by the side plate provided with this flap, the first upper surface plate, and the first inner wall. Will be absorbed by the shock absorbing space. The impact applied to the side plate provided with the other flap is absorbed in a shock absorbing space surrounded by the side plate, the second upper plate, and the second inner wall. Further, the shock applied to the bottom wall is absorbed in a shock absorbing space formed by the bottom wall and the inner bottom wall disposed apart from the bottom wall. Therefore, the impact from three directions is absorbed by the structure of the packaging box itself without using special buffer means such as styrene foam resin. Therefore, in particular, the articles stored in the recess formed by the first inner wall, the inner bottom wall, and the second inner wall are protected from impact.

A side wall on which the other flap is continuously provided;
By storing the accessories in the space surrounded by the second upper plate and the second inner wall, it is possible to store and hold the accessories using the shock absorbing space. Packaging is achieved.

A lid plate and an inner lid are respectively connected to the upper ends of a pair of side walls where no flap is provided, and the upper opening is closed by the lid plate and the inner lid. It becomes possible to have a structure. The impact from the upper part is absorbed by the double-layered closing means, and the articles stored inside are protected.

A locking plate is provided at the upper end of each of the pair of side walls where no flap is provided, and a locking piece is connected to the tip of the inner lid so as to be bendable. And a lid plate is inserted so as to be overlapped on the inner side of the side plate on which the lid plate is continuously provided, so that two
When a double structure is formed, the shock absorption is enhanced by the double structure, and the lid plate and the inner lid are locked, respectively, the double structure can be formed by the side walls and the locking pieces that are not provided with the flap. it can. Therefore, the impact from the side wall side where the flap is not provided is not
It becomes possible to absorb by the side wall which made heavy structure, and it becomes possible to protect the goods accommodated inside from the impact from these directions.

[Brief description of the drawings]

FIG. 1 is an exploded plan view of a corrugated board for assembling a packaging box according to a first embodiment.

FIG. 2 is an external perspective view of the assembled packaging box.

FIG. 3 is an external perspective view showing folding of a flap.

FIG. 4 is an external perspective view showing storage of a product.

FIG. 5 is an external perspective view showing a sealing operation.

FIG. 6 is a longitudinal sectional view of a packaging box.

FIG. 7 is an exploded plan view of a corrugated board for assembling a packaging box of a modified example.

FIG. 8 is a perspective view of the assembled packaging box.

FIG. 9 is an exploded plan view of a corrugated board for assembling the packaging box of the second embodiment.

FIG. 10 is an external perspective view of the packaging box.

FIG. 11 is an external perspective view showing an operation of sealing the assembled packaging box.

FIG. 12 is an exploded plan view of a corrugated board for assembling a packaging box of a modified example.

FIG. 13 is a perspective view of the assembled packaging box.

FIG. 14 is an exploded perspective view showing a conventional packaging box.

FIG. 15 is an exploded perspective view showing another conventional packaging box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Corrugated cardboard board 11-14 Side board 15, 16 Bending line 17 Joining piece 21 Bending line 22, 23 Bottom plate 24 Bending line 25 Auxiliary bottom plate 26 Bending line 27 Joining part 31 Bending line 32 Cover plate 33 Inner lid 34 Fold Bending lines 35, 36 Locking pieces 37 Semi-circular cuts 38 Insertion holes 42 Bending lines 43, 44 Flaps 45 Bending lines 46 to 48 Cuts 49, 50 Bending lines 51 Second upper surface plate 52 Second inner wall 53 First upper surface plate 54, 55 Bending line 56 Cut 57 Projection piece 58 First inner wall 59 Inner bottom wall 60 AC adapter 61 CD player 62 Manual 63 Connection cord 64 Contact plate 66 Bending line 67 Bending piece 68 Notch 69 Bending line 70 Folding piece 75 Corrugated board 76 Bottom plate 77 Bending line 78 Front side plate 79 Back side plate 80 Bending line 81 Side plate 82 Right side plate 85 Bending line 86 Folding piece 87 Projection piece 88 Engagement hole 89 Folding line 90 Cover plate 91 Folding line 92 Locking piece 96 Bending line 97 Folding plate 98 Protrusion piece 99 Engagement hole 102 Fold Bend line 103 flap 104 bend line 105 cut 106,107 bend line 108 second top plate 109 second inner wall 110 first top plate 111 bend line 112 flap 113 cut 114 bend line 115 protruding piece 116 First inner wall 117 Inner bottom wall 118 Contact plate 119 Bending line 120 Folding piece 121 Protrusion piece 124 to 126 Cut 127 to 131 Bending line 134 Packaging box

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 56-4145 (JP, U) Japanese Utility Model Showa 55-110423 (JP, U) Japanese Utility Model Showa 63-126291 (JP, U) Japanese Utility Model Showa 56- 18376 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 5/50 B65D 81/16

Claims (3)

(57) [Claims] 1. A flap is connected to upper ends of a pair of mutually opposing side walls of a box body having a bottom wall formed at a lower end of four side walls via bending lines. A first top plate that bends the flap and extends substantially horizontally from the top end of the side wall toward the top end of the opposing side wall; A first projecting piece extending toward the bottom wall and abutting against the bottom wall;
An inner bottom wall, an inner bottom wall connected to a lower end of the first inner side wall, and arranged at a distance from the bottom wall; A projecting piece that comes into contact with the bottom wall, and a contact plate that stands upward is sequentially provided, and the other flap is bent at the upper end of the opposite side wall from the upper end of the side wall by bending the other flap. A second upper surface plate extending substantially horizontally toward the front surface, and a second inner side wall continuously provided from a tip end of the second upper surface plate, reaching the bottom wall, and in contact with the contact plate. Packaging box. 2. A lid plate and an inner lid are respectively connected to the upper ends of the other opposing side walls, and an upper opening is closed by the lid plate and the inner lid. The packaging box according to claim 1, wherein 3. A locking piece is connected to a tip portion of the lid plate and the inner lid so as to be bendable, respectively, and the locking piece is located inside a side wall where the inner lid and the lid plate are connected. Are inserted so as to be superimposed on each other, and 2
5. The packaging box according to claim 4, wherein a double structure is formed, and the double structure enhances shock absorption and locks the lid plate and the inner lid.