JP2008179367A - Packing box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing box capable of enhancing the packing workability. <P>SOLUTION: The packing box 100 includes a bottom lid 102 having its upper surface being opened, and an upper storage body 104 which is inserted into the bottom lid 102 and assembled. In the bottom lid 102, a lower shock-absorbing material 106 is installed on its bottom plate 102a, an upper shock-absorbing material 108 is placed thereon, and an object to be packed is placed thereon. In particular, the upper shock-absorbing material 108 is formed on the upper surface of a guide plate 108a, and a projection 108b is formed on each of its four sides. When the upper shock-absorbing material 108 is placed on the lower shock-absorbing material 106, the projections 108b are brought into contact with the inner surface of a side wall 102b and spontaneously positioned. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a packaging box suitable for, for example, an application for packaging a product before shipment.

  For example, when packing a product (heavy object) with a certain mass, such as a copying machine, the product is placed on a box-shaped base such as a bottom cover via a cushioning material, and the outer box from above. The form which covers and packs is generally known (for example, refer patent document 1). Alternatively, it is also known that a product is placed on a pallet different from the bottom lid via a cushioning material, and is packed with a packing box from above. (See Patent Document 2).

  In the prior art cited above (Patent Document 1), the shock-absorbing material is first placed on the base, and then the product is placed so as to fit into the recess of the shock-absorbing material. Is not fixed on the base, it is necessary to work with care so that the cushioning material does not shift when placing the product.

With respect to this point, in the prior art (Patent Document 2) mentioned later, a recess for fixing the buffer material is provided on the pallet on which the product is placed, and the buffer material has a protrusion corresponding to the recess. Is formed. In this case, since the cushioning material can be fixed on the pallet in advance, it is not necessary to consider the displacement of the cushioning material when placing the product as in the prior art (Patent Document 1) mentioned above. .
Japanese Patent Laying-Open No. 2006-51994 (FIG. 1) Japanese Patent Laying-Open No. 2005-200081 (FIG. 1)

  However, even in the latter prior art (Patent Document 2), it is necessary to fit the cushioning material into the recesses of the pallet one by one in the process of packing and to align all the directions. It cannot be said that the workability is so excellent as compared to Document 1).

  In addition, as in the former prior art (Patent Document 1), when a rectangular box-shaped main body is inserted inside a base on which a product is placed and a packaging box is assembled, when the main body is inserted inside the base , It is necessary to work with care so that the lower end does not interfere with the cushioning material. In this case, since the cushioning material is not fixed to the base, it is possible to adjust the position of the cushioning material together with the product, but the work man-hour when inserting the main body is increased accordingly.

  In this regard, as in the latter prior art (Patent Document 2), a method of fixing the buffer material to the base (locking) and securing a space for inserting the main body around the buffer material in advance is also conceivable. However, in this case, since another work is required to fix (lock) the cushioning materials one by one, the workability as a whole is not improved.

  Therefore, an object of the present invention is to provide a technique capable of improving the efficiency of packing work.

  The packaging box of the present invention is configured by combining a bottom lid and an upper container. The bottom lid is composed of a bottom plate and a side wall rising from the peripheral edge thereof, and has a form in which an upper surface is opened. Moreover, the upper container is comprised from the top plate and the side wall suspended from the periphery, and has the form which the lower surface opened. The upper container is inserted into the inside of the side wall of the bottom lid with the opening on the lower surface thereof facing the opening on the upper surface of the bottom lid.

  Moreover, the packing box of this invention can support the load of a packing target object with a lower buffer material and an upper buffer material. Of these, the lower cushioning material is placed and accommodated on the bottom plate of the bottom lid inside the side wall, and the upper cushioning material is placed on the lower cushioning material in the state of being placed on the lower cushioning material. It is accommodated inside the side wall. The upper cushioning material is formed in a form that can directly support the lower surface of the packing object (product), for example, and the lower cushioning material supports the load of the object via the upper cushioning material, and drops, for example It is deformed by the impact load of time and plays the role of mitigating the impact.

  In such a structure, when the upper container is inserted into the inside of the bottom lid and assembled as a packaging box, it is necessary to insert the upper container while avoiding the lower cushioning material and the upper cushioning material. In this way, workability is improved.

  First, since the lower cushioning material is directly installed on the bottom plate of the bottom lid body, it is easy to secure a space for inserting the side wall of the upper housing body around the lower cushioning material in advance. On the other hand, the upper cushioning material is merely placed on the lower cushioning material, but the upper cushioning material is formed by the tip of the protrusion formed around the upper cushioning material contacting the side wall surface of the bottom lid. Can be positioned. In the state where the upper cushioning material is positioned in this way, an insertion space for the upper container is formed between the periphery of the upper cushioning material and the side wall surface of the bottom lid, and therefore, particularly the position adjustment of the upper cushioning material It is not necessary to fix the upper cushioning material to the lower cushioning material in advance (lock), and the insertion operation can be performed very easily.

  On the other hand, the side wall of the upper container is provided with a cutout part formed by cutting away from the lower end partly upward. The notch can relatively receive the protrusion on the inner side with the upper container inserted into the bottom lid. That is, when the upper container is inserted into the bottom lid body, the notch serves as a relief of the protrusion, so that the side wall of the upper container does not interfere with the protrusion. Further, when the upper container is inserted, the step between the bottom plate of the bottom lid and the protrusion is eliminated by the notch.

  The above-mentioned protrusion is positioned at the top by positioning the upper cushioning material with respect to the bottom lid by contacting the side wall surface of the bottom lid, and preventing the protrusion itself from being displaced in the bottom lid. The container can be positioned relative to the notch when the container is inserted into the bottom lid from the opening on the upper surface. In this case, simply inserting the upper container into the inside of the bottom lid naturally aligns the protrusion and the notch, so there is no need to pay particular attention to the positional relationship between the two, and the work is extremely easy. It can be performed.

  In the packaging box of the present invention, it is preferable that the upper cushioning material is formed on the upper surface of a predetermined plate-like material, and the protrusions are formed so as to protrude from the periphery of the plate-like material.

  For example, if the lower cushioning material and the upper cushioning material are three-dimensionally assembled from corrugated cardboard blanks, the above plate-shaped material is composed of corrugated board and protrusions are integrally formed on the periphery thereof. can do. Even in such a mode, the upper cushioning material can be positioned naturally by the tip of the projection contacting the side wall surface of the bottom lid, so the cardboard of the upper cushioning material can be placed in the lower cushioning material when the upper container is inserted. It is not necessary to fix (lock) by folding work.

  According to the packaging box of the present invention, it is possible to insert the upper container very easily without particularly fixing (locking) the upper cushioning material to the lower cushioning material in advance or finely adjusting the position. Work man-hours can be reduced, and the efficiency of packing work can be greatly improved.

Hereinafter, the packaging box of the present invention will be described with reference to an embodiment.
FIG. 1 is a perspective view illustrating a packaging box 100 according to an embodiment. Here, the packaging box 100 is shown in a completed state, and its outer shape is a substantially rectangular parallelepiped (hexahedron) shape. The packaging box 100 is configured by combining a bottom lid body 102 and an upper housing body 104. The bottom lid body 102 and the upper housing body 104 are formed by punching a cardboard board material into a blank and bending it, for example. It is assembled with. Connection holes 110 and 112 are formed in the bottom lid body 102 and the upper housing body 104, respectively. A connection member such as a joint (not shown) is inserted through the connection holes 110 and 112, and the bottom cover body 102 and the upper housing body 104 are connected to each other through the joint. The packaging box 100 having such a configuration is suitable for use in packaging a product having a certain amount of mass (so-called heavy object) such as a copying machine, a multifunction machine, a finisher, and the like.

  Next, FIG. 2 is an exploded perspective view showing the packaging box 100 disassembled into a plurality of components. The components of the packaging box 100 include a lower cushioning material 106 and an upper cushioning material 108 housed therein, in addition to the bottom lid body 102 and the upper housing body 104 shown in FIG. Hereinafter, each component will be described.

  The bottom lid body 102 and the upper housing body 104 each have a rectangular parallelepiped shape (box shape), and the upper surface of the bottom lid body 102 is entirely open, and the lower surface of the upper housing body 104 is entirely It is open. On the other hand, the upper housing 104 is inserted into the inside through the upper surface opening of the bottom lid 102 (so-called semi-A case). For this reason, the opening of the bottom cover body 102 is set to be slightly larger than the outer shape of the body of the upper housing body 104.

  The bottom cover body 102 includes a bottom plate 102a and four side walls 102b. The bottom plate 102a has a rectangular shape, and the lower cushioning material 104 is placed on the upper surface thereof. The four side walls 102b extend upward so as to rise substantially vertically from the peripheral edge (four sides of the rectangle) of the bottom plate 102a.

  The upper container 104 is composed of four flap-like pieces 104a and four side walls 104b that constitute a top plate. As shown in FIG. 1, when the four flap-like pieces 104a are folded and overlapped, a rectangular top plate is formed as a whole. In this state, the top plate (four flap-shaped pieces 104a) closes the upper surface of the upper container 104. The four side walls 104b extend downward so as to hang substantially vertically from the periphery (four sides of the rectangle) of the top plate. The product accommodated in the packaging box 100 is surrounded by four side walls 104b on all four sides.

  As shown in FIG. 1, in a state where the upper container 104 is inserted into the opening of the bottom lid 102, the side wall 104 b of the upper container 104 is fitted inside the side wall 102 b of the bottom lid 102. Each of the faces overlaps each other. In this state, the connecting holes 110 and 112 overlap at the same position, and a joint (not shown) can be inserted.

  The connection holes 110 and 112 are formed by punching (through) a corrugated cardboard as a material in the thickness direction. About the bottom cover body 102, one is provided in the center position seen in the width direction of each side wall 102b. Further, the upper container 104 is provided one by one at the lower edge of the central position in the width direction of each side wall 104b. For this reason, even if the connection holes 110 and 112 are formed, the side walls 102b and 104b are not extremely weakened, and these still have an appropriate strength.

  The lower cushioning material 106 is provided on the upper surface of the rectangular base plate 106a. The base plate 106a is slightly smaller in outer size than the inner method of the bottom lid 102 (the dimension between the opposing side walls 102b). On the other hand, the lower cushioning material 106 is installed within a range that is slightly smaller inward from the periphery of the base plate 106a. For this reason, the side surface of the lower cushioning material 106 is in a position that enters the inside from the periphery of the base plate 106a with a certain distance.

  When such a lower cushioning material 106 is accommodated from the opening on the upper surface of the bottom lid body 102, the periphery of the base plate 106a is guided along the inner surface of the side wall 102b. And can be positioned easily. Further, as described above, since the lower cushioning material 106 is installed within a range that goes inward from the periphery of the base plate 106a, when the lower cushioning material 106 is installed on the bottom plate 102a, there is a side wall around it. A gap is ensured between 102b and 102b.

  The lower cushioning material 106 and the base plate 106a are formed from, for example, a cardboard board material. In particular, the lower cushioning material 106 is punched out into a board material blank and bent to form a three-dimensional assembly, thereby having a certain height from the upper surface of the base plate 106a. Such a lower cushioning material 106 serves to support the load of the product accommodated in the packaging box 100 and to absorb the impact load at the time of dropping, for example, by buckling deformation.

  The upper cushioning material 108 is also provided on the upper surface of the flat guide plate 108a. The outer shape of the guide plate 108a is substantially rectangular, and the protrusions 108b are integrally formed at the center positions of the four sides. . More specifically, the outer size of the guide plate 108a is slightly smaller than that of the base plate 106a, and the upper cushioning material 108 is installed in the periphery of the guide plate 108a. For this reason, the side surface of the upper cushioning material 108 reaches substantially the same position as the peripheral edge of the guide plate 108a.

  Further, the four protrusions 108b formed on each side of the guide plate 108a all extend so as to protrude horizontally from the peripheral edge of the guide plate 108a. The protrusion 108b has a certain width, but the width is sufficiently small with respect to the long side and the short side of the guide plate 108a (for example, about 1/10 to 1/8). However, between the opposite sides of the guide plate 108a, the dimension between the tips of the protrusions 108b is slightly smaller than the inner method of the bottom lid 102 (dimension between the opposing side walls 102b).

  The upper cushioning material 108 is accommodated in the bottom lid 102 so as to be placed on the lower cushioning material 106. When such an upper cushioning material 108 is accommodated from the opening on the upper surface of the bottom lid 102, the tips of the four protrusions 108b of the guide plate 108a are guided along the inner surface of the side wall 102b. It can be easily positioned with respect to the lid 102. Further, as described above, although the upper cushioning material 108 reaches the peripheral edge of the guide plate 108a, the peripheral edge of the guide plate 108a is inward of the tip of the projection 108b. When placed on 106, a gap is secured around the side wall 102b.

  The upper cushioning material 108, the guide plate 108a, and the protrusion 108b are also formed from, for example, a cardboard board material. Of these, the upper cushioning material 108 is punched into a board material blank, and is folded and processed in a three-dimensional manner, thereby having a certain height from the upper surface of the guide plate 108a. Such an upper cushioning material 108 directly supports the lower surface of the product accommodated in the packaging box 100, and plays a role of absorbing an impact load at the time of dropping, for example, by buckling deformation.

  Cutouts 114 are formed in the side walls 104b of the upper container 104, respectively. The notch 114 is formed by cutting each side wall 104b into a rectangular shape from the lower end edge upward, and its width is larger than that of the protrusion 108b. The depth (length in the vertical direction) of the notch 114 is from the upper surface of the bottom plate 102a of the bottom lid 102 to the upper surface of the protrusion 108b in a state where the upper cushioning material 108 is placed on the lower cushioning material 106. Greater than the height of

  Therefore, as shown in FIG. 1, when the upper container 104 is inserted into the bottom cover body 102, the four protrusions 108b are respectively corresponding notches with the lower edge of the side wall 104b landing on the bottom plate 102a. It enters the inside of the part 114, and the step between the bottom plate 102a and each projection 108b is absorbed by this.

  Next, FIG. 3 is a development view of a blank constituting the upper container 104. The upper container 104 can be formed from a single blank. The connection hole 112 and the notch 114 are already formed in a blank state. This blank has a part which becomes four side walls 104b along the longitudinal direction, and each part is divided through a fold line (one-dot chain line in the figure). Further, the flap pieces 104a are connected to the portions to be the side walls 104b through folding lines (two-dot chain lines in the figure).

  First, when the blank shown in FIG. 3 is bent at each fold line (one-dot chain line in the figure), a rectangular tubular body is shaped. A flap F for bonding is formed at one end portion of the blank as viewed in the longitudinal direction, and this flap F is overlapped and bonded to the inner surface of the side wall 104b located on the opposite side as viewed in the longitudinal direction.

  Next, the upper container 104 is formed by folding the four flap-shaped pieces 104a at respective folding lines (two-dot chain lines in the figure) and configuring them as one top plate. Note that the flap-shaped piece 104a can be joined to each other by sticking two seams positioned on the upper side in a folded state with an adhesive tape or the like. In addition, since a well-known thing is applicable about the bottom cover body 102, illustration of a blank etc. is abbreviate | omitted especially here.

FIG. 4 is a plan view showing a dimensional relationship between the bottom lid 102, the upper cushioning material 108, and the guide plate 108a (projection 108b). Hereinafter, the dimensional relationship of each part is demonstrated in detail.
When the dimensions (inner method) between the opposing side walls 102b of the bottom cover 102 are L1 and W1, and the long side and short side dimensions of the guide plate 108a are L2 and W2, they have the following relationship. That is, the longer side dimension L2 of the guide plate 108a is smaller than the longer dimension L1 between the side walls 102b, and the shorter side dimension L2 of the guide plate 108a is smaller than the shorter dimension W1 between the side walls 102b ( Relational expression: L1> L2, W1> W2).

  And the difference between each dimension L1, W1 between the opposing side walls 102b and each dimension L2, W2 of the long side and the short side of the guide plate 108a is a gap formed around the upper cushioning material 108 and the guide plate 108a. It corresponds to the size of S1 and S2 (relational expression: S1 = L1-L2, S2 = W1-W2). The sizes of the gaps S1 and S2 are larger than the plate thickness of the side wall 104b of the upper container 104. Further, the gaps S1 and S2 may be approximately the same size.

  Moreover, when the longer side is L3 and the shorter side is W3 in the dimension between the tips of each protrusion 108b when viewed from the opposite sides of the guide plate 108a, these have the following relationship. That is, the longer dimension L3 between the tips of the projections 108b is slightly smaller than the longer dimension L1 between the sidewalls 102b, and between the tips of the projections 108b than the shorter dimension W1 between the sidewalls 102b. The shorter dimension W3 is slightly smaller (relational expression: L1> L3, W1> W3). However, since the protrusion 108b protrudes from the peripheral edge of the guide plate 108a, the dimensions L3 and W3 are larger than the dimensions L2 and W2. The protruding length of each protrusion 108b is substantially the same as or slightly smaller than the gaps S1 and S2.

  Although not shown in FIG. 4, the base plate 106a of the lower cushioning member 106 has a long side dimension slightly smaller than the longer dimension L1 between the side walls 102b, and the short side dimension is a side wall. It is slightly smaller than the shorter dimension W1 between 102b. In the range where the lower cushioning material 106 is installed, the longer dimension of the outer shape is substantially the same as the dimension L2 of the long side of the guide plate 108a, and the shorter dimension is the short side of the guide plate 108a. It is substantially the same as the dimension W2. For this reason, clearances S1 and S2 are also secured around the lower cushioning material 106 between the side walls 102b.

  An insertion space (hatched portion in the drawing) of the upper container 104 is formed around the upper cushioning material 108 and the lower cushioning material 106 by the gaps S1 and S2. When the upper container 104 is inserted into the bottom lid 102, each side wall 104 b can be lowered through the insertion space and can be combined with the bottom lid 102 without interfering with the upper cushioning material 108 and the lower cushioning material 106. .

  Further, since the upper cushioning material 108 is in a state where the four protrusions 108b are in contact with the inner surfaces of the corresponding side walls 102b, the position of the upper cushioning material 108 is not shifted on the lower cushioning material 106. For this reason, when the upper container 104 is inserted into the bottom lid 102, the relative positioning of each projection 108b and the corresponding notch 114 of the side wall 104b is ensured. Can easily enter the corresponding notch 114.

  FIG. 5 is a longitudinal sectional view showing a state in which the protrusion 108b is received in the notch 114 when the packaging box 100 is assembled. As described above, the bottom cushion 102 is provided with the lower cushioning material 106 on the bottom plate 102a via the base plate 106a, and the upper cushioning material 108 is placed thereon via the guide plate 108a. Has been. The product P to be packed is directly supported on the lower surface by the upper cushioning material 108 and further supported by the lower cushioning material 106.

  At this time, a step is generated between the protrusion 108b and the bottom plate 102a by the thickness of the lower cushioning material 106 and the base plate 106a. However, since the protrusion 108b can enter the notch 114 of the side wall 104b, the above step is eliminated when the packaging box 100 is assembled.

  Next, one form of packing work using the packing box 100 will be described. The following work procedure is merely an example, and the present invention is not limited to this.

(1) The bottom lid 102 is installed on a work pallet or the like.
(2) The lower cushioning material 106 is accommodated through the opening on the upper surface of the bottom lid body 102 and installed on the bottom plate 102a. At this time, the lower cushioning member 106 is easily positioned with respect to the bottom lid 102 because the periphery of the base plate 106a is guided along the inner surface of the side wall 102b.

(3) The upper cushioning material 108 is placed on the lower cushioning material 106 through the opening on the upper surface of the bottom lid 102. At this time, the tip of the projection 108b of the guide plate 108a contacts the inner surface of the four side walls 102b, and the upper cushioning material 108 is easily positioned on the bottom cushioning body 102 on the lower cushioning material 106. At this time, the insertion space is secured between the upper cushioning material 108 and the side wall 102b.

(4) A product (for example, a copying machine) is placed on the upper cushioning material 108.
(5) About the blank which comprises the upper accommodating body 104, this is first shape | molded in a rectangular tube shape. At this time, the flap-shaped piece 104a is not yet folded.
(6) A product placed on the upper cushioning material 108 is covered with a rectangular tube-shaped upper container 104 from above. This is to improve the escape of air by keeping the top plate of the upper container 104 open. When the upper container 104 placed on the product is further lowered, the side wall 104b is inserted through the opening of the bottom lid 102. At this time, the side wall 102b descends through the insertion space formed around the upper cushioning material 108 and the lower cushioning material 106, and can land on the upper surface of the bottom plate 102a without interfering with these. Further, the protrusions 108b are surely received in the corresponding notches 114.

(7) Fold the four flap-shaped pieces 104a and paste the upper butted portions together to form one top plate.
(8) The joints are inserted into the connection holes 110 and 112 to connect the bottom lid body 102 and the upper housing body 104.

  In the above procedure (6), the flap-shaped piece 104a may be folded first. In this case, the procedure (7) is executed before the procedure (6).

  When the bottom lid 102 and the upper container 104 are combined through the above procedure, the product packaging operation by the packaging box 100 is completed. As described above, according to the packaging box 100 of the present embodiment, in the so-called semi-A-type case-specific packaging operation, the upper cushioning material 108 is simply placed on the lower cushioning material 106, and the four protrusions 108b are formed on the side walls. Since the positioning is naturally performed in contact with the inner surface of 102b, there is no need to perform an operation of locking (connecting) the upper cushioning material 108 to the lower cushioning material 106.

  Even if the upper cushioning material 108 is not locked to the lower cushioning material 106, the upper cushioning material 108 is reliably positioned by the four protrusions 108b, and an insertion space for the upper container 104 is secured around the upper cushioning material 108. Therefore, it is not necessary to finely adjust the position of the lower cushioning material 106 when the upper container 104 is inserted, and the work man-hours are reduced and the work efficiency is greatly improved.

  Further, since the four projections 108b are not displaced in a state where they are in contact with the inner surface of the side wall 102b, when the upper container 104 is inserted, the projections 108b and the side walls 104b can be easily inserted into the corresponding notches 114. Thus, the insertion operation of the upper container 104 can be completed smoothly without interference.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications. For example, the packaging box can be formed using not only cardboard but also other packaging materials.

  In one embodiment, the protrusion 108b is rectangular, but the shape is not particularly limited, and may be trapezoidal or semicircular. Further, the shape of the corresponding notch 114 can be changed as appropriate in accordance with the shape of the protrusion 108b.

  Furthermore, there is no restriction | limiting in particular about arrangement | positioning and the number of protrusion 108b, It is possible to increase / decrease suitably according to the size of the packaging box to implement, or to change the arrangement | positioning.

  In addition, the structure of the packaging box mentioned in the embodiment is a preferable example to the last, and the specific dimensions, internal volume, and the like are not limited at all.

It is a perspective view which shows the packaging box of one Embodiment. It is the disassembled perspective view which decomposed | disassembled and showed the packaging box into the bottom cover body and the upper container. It is an expanded view of the blank which comprises an upper container. It is the top view which showed the dimensional relationship between a bottom cover body, an upper shock absorbing material, and a guide plate (protrusion). It is a longitudinal cross-sectional view (V arrow sectional drawing in FIG. 1) which shows the state by which the protrusion was received by the notch part at the time of the assembly of a packaging box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Packing box 102 Bottom cover body 102a Bottom plate 102b Side wall 104 Upper container 104a Flap-shaped piece (top plate)
104b Side wall 106 Lower cushioning material 106a Base plate 108 Upper cushioning material 108a Guide plate 108b Projection 114 Notch

Claims (3)

A bottom lid body composed of a bottom plate and side walls rising from the periphery thereof and having an open top surface;
An upper container that is composed of a top plate and a side wall that hangs from the periphery thereof, has an open bottom surface, and is inserted into the inside of the side wall with the opening on the bottom surface facing the opening on the top surface of the bottom lid. When,
On the bottom plate of the bottom lid, a lower cushioning material accommodated by being installed inside the side wall;
An upper cushioning material housed inside the side wall of the bottom lid in a state of being placed on the lower cushioning material;
The upper cushioning material, which is formed so as to partially protrude around the upper cushioning material and whose tip is in contact with the side wall surface of the bottom lid body, is placed on the lower lid body. And, in this positioned state, a projection that forms an insertion space for the upper container between the periphery of the upper cushioning material and the side wall surface of the bottom lid,
A side wall of the upper container is formed by partially cutting upward from a lower end thereof, and the upper container includes a notch portion that relatively receives the protrusion in a state where the upper container is inserted into the bottom lid. Packing box characterized by In the packaging box according to claim 1,
The protrusion has a tip that contacts the side wall surface of the bottom lid so that the upper cushioning material is positioned with respect to the bottom lid and prevents the protrusion itself from being displaced in the bottom lid. Thus, the upper container is positioned relative to the notch when the upper container is inserted into the bottom lid from the opening on the upper surface. In the packaging box according to claim 1 or 2,
The upper cushioning material is formed on the upper surface of a predetermined plate-shaped material,
The packaging box, wherein the protrusion is formed to protrude from a peripheral edge of the plate-like material.

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