JPS6119048Y2 - - Google Patents

Description

[Detailed description of the invention] This invention eliminates the need to use special packing or padding for cylindrical objects, such as glass products, plastic products, or ceramic products, which have hardness but are easily damaged by impact. Also, flap 6
fits the product tightly and cushions it suspended within the box, allowing it to be securely packaged. The present invention aims to provide an assembly-type packaging box made of paperboard or cardboard.

To explain this invention with reference to an embodiment of FIGS. 1 to 4, the packaging box 1 is made of cardboard, for example, and has a rectangular plan view and a front view, and a nearly square side view. It is formed so that it appears. In order to make the packaging box 1 of this embodiment flat and foldable,
The bottom plate 2 is made up of bottom flaps 2a, 2b, 2c, and 2c to form a combined bottom commonly called a hell bottom, and the pair of side plates 3, 3 and the pair of toe plates 4, 4 are glued together. A series of collapsible rectangular tubes are connected through the section 5, and this is opened into a rectangular tube shape.
When the bottom plate 2 is formed by combining the bottom flaps 2a, 2b, 2c, and 2c, it can be assembled into a box 1 having a rectangular planar shape as shown in FIGS. However, on the side plates 3, 3 and the tab plates 4, 4 of this packaging box 1,
Each flap has an extended flap 6 as shown below.

That is, among the pair of side plates 3, 3, on the upper edge 3a of one side plate 3, there is a plate of a size that completely overlaps and makes surface contact with the suspended holding plate 7 of the cylindrical object and the inner surface of the other side plate 3. A flap 6 is extended, and a small flap 6 is provided between the upper edge 3a of the side plate 3 and the suspended holding plate 7, and between the suspended holding plate 7 and the inner plate 8. Inner fold lines a, a', b, and b' for the two strips are provided with a distance α, and the flap 6 is 90 degrees along the inner fold lines a, a', b, and b'.
゜Fold this inward and position the part of the suspended holding plate 7 between the fold lines a' and b' inside the box 1, and the inner plate 8
It is designed to completely overlap and come into surface contact with the inner surface of the side plate 4, but the part of the suspended holding plate 7 is placed in the state shown in FIGS. In order to position it inside the box 1, a pair of elongated holes and a required number of broken lines as shown below are formed at appropriate positions.

In other words, the retaining plate 7 is located slightly inside the width β from both side edges 6a, 6a of the flap 6, and inside between the fold lines a' and b', so that the extension of the flap 6 is A pair of two rectangular long holes 9, 9 extending along the installation direction are formed. In this embodiment, each long hole 9 is defined as three sides 9 of a rectangular long hole.
a, 9b, 9c are formed with incision lines,
Only the central portion 9'd of the remaining side 9d is formed as a score line, and the remaining portions are formed as fold lines with trapezoidal flaps 10, 10, respectively.

In addition, in the part of this suspended holding plate 7, each short side 9b, 9b and 9c, 9 of the pair of long holes 9, 9 is provided.
The outer folding lines c, c along the line c are formed over the entire width of the flap 6, and the hanging holding plate portions 7a, 7a on the outside of the pair of elongated holes 9, 9 are provided with an inner plate as described above. 8 is overlapped with the inner surface of the side plate 3, the cross-sectional shape along the extending direction of the flap 6 becomes a V-shape as shown in FIG. 4, and the lower end including the cut line 9'd is in contact with the bottom plate 2,
Two broken lines d and d' are provided (these two broken lines d and d' may be combined into one in other embodiments, and in that case, the above-mentioned cross-sectional shape ) The part 7b of the hanging holding plate between the pair of elongated holes 9, 9 does not have the flap 6 even if the large ends of the hanging holding plate parts 7a, 7a are brought into contact with the bottom plate 2. The cross-sectional shape along the extension direction is U-shaped, and at least the lower end thereof is connected to the bottom plate 2.
An arbitrary number (four in the embodiment) of outward bending lines e, e', f, and f' are provided so that they cannot come into contact with each other.

Further, an appropriate small interval α is provided between the two fold lines g and g' on the upper edge 4a of the pair of nail plates 4, 4, respectively, so that the tip end portion 11a is formed into a double flap. A fold-in flap 11 is extended.

In the figure, 12 is a lid flap extending to the upper edge of the remaining side plate 3, 13 is an insertion claw formed at the tip thereof, 14 is a fold line a of the flap 6,
This is the insertion hole for the insertion melon 13, which is drilled in the area between a'.

Next, to explain the operation, since the packaging box 1 of this embodiment has the above-mentioned configuration, first, the bottom flaps 2a, 2b, 2c, and 2c are combined to form the bottom plate 2, and then the side plates are assembled. 3 upper edge 3
The flap 6 extending from a to the inner fold lines a, a', b, b' and the outer fold lines c, c', d,
When folded along d', e, e', f, f' and inserted into the packaging box 1, this flap 6
- The state shown in Figure 4 is reached, and the inner plate 8 is brought into surface contact with the side plate 3 to maintain an upright state, and the parts 7a, 7a on both sides of the suspended holding plate 7 are shaped approximately like a V-shape. At the same time, each flap 10 is bent by more than 90 degrees along each fold line 9d, and each flap 10
When the oblique sides of the trapezoid are brought into contact with the bottom plate 2 and side plates 3 of the box 1, they are held in the above-mentioned bent state, so that the parts 7a, 7 on both sides of the suspended holding plate 7
Each of the portions a is strongly retained in the approximate shape of the V-shape described above, and the lower end portions of the portions a are brought into contact with the bottom plate 2 between the fold lines d and d'. (Figure 4).

However, the central portion 7b of the suspended holding plate 7
If the parts 7a, 7a on both sides are kept in the above state, the lower end part will not come into contact with the bottom plate 2.
The shape is retained to approximate the shape of the character.

Therefore, in the packaging box 1 of this invention, first, only the flap 6 is inserted into the box 1, and then a cylindrical object to be packaged, e.g. Flange parts 15a, 15a on both ends
If the cylinder 15 has the protrusion 15d and its flange portions 15a, 15a are positioned in the elongated hole 9 and placed on the suspended holding plate 7, the cylinder 15 will be Inside the box 1, the body part 15b is suspended in the middle part 7 of the holding plate 7.
b, and is held in a suspended state without contacting the bottom plate 2 and both side plates 3, 3, and its both end surfaces 1
5c, 15c, the long side 9d of the pair of elongated holes 9, 9,
9d, that is, by the portions 7a, 7a of the pair of suspended holding plates forming the long sides 9d, 9d of the elongated holes 9, 9, and thereby held so as not to be laterally movable on FIG. be done. At this time, the end face is buffered by the fold line 9d of the flap 10. Next, as shown in FIGS. 2 to 4, the double flap 11a
A pair of folding flaps 11, 11 each having a
is folded in and brought into contact with the top surface of the cylinder 15, the cylinder 15 housed in the box 1 will be folded into the bottom plate 2, which constitutes the six outer sides of the packaging box 1.
Both side plates 3, 3, tab plates 4, 4, and lid flap 12
It will be held in the box 1 in a suspended state with an appropriate space left between both.

In the above embodiment, the effect of the present invention was explained by exemplifying the cylinder 15 having flanges 15a, 15a at both ends, but the packaging box 1 of the present invention
As can be seen from the figure, even if such a cylindrical object does not have a flange, its both end surfaces are brought into contact with the long sides 9d, 9d of the pair of elongated holes 9, 9,
Needless to say, it can be held in a suspended state similar to the above.

The packaging box according to this invention has been described above with reference to the embodiments, but since the packaging box according to this invention has the above-mentioned configuration, the packaging box can be constructed without using special packing or padding. In other words, even if an impact is applied to the outer surface of the packaging box, it will not directly impact the cylindrical object inside the box. In order to avoid the transmission of information to the shaped objects, a certain distance is provided between the bottom plate, both sides of the bottom plate, both jaw plates, and the lid plate, and by using only the existence of the flaps bent inside the box. , the cylindrical object can be tightly and firmly packaged in the packaging box without wobbling within the packaging box.

In addition, the packaging box of this invention is made by placing both end surfaces of the cylindrical object against the outer sides of a pair of long holes provided in the suspended holding plate, positioned slightly inside from both side edges. As shown in the examples, it is necessary to use a cylindrical object with flanges at both ends or a fragile protrusion 1 on the end surface.
5d is particularly suitable as a packaging box for a cylindrical object.

In addition, each of the flaps having the above-mentioned structure, which characterizes the packaging box of this invention, can be bent and expanded at the fold line, so if the bottom plate of the box is assembled at the bottom, There are also advantages such as the ability to fold the packaging box to reduce storage space and the ability to transport it at low cost.

[Brief explanation of the drawing]

Fig. 1 is a developed view showing an embodiment of the packaging box according to this invention, Fig. 2 is a perspective view showing the assembled state, Fig. 3 is a longitudinal sectional front view taken along the - line in Fig. 4, FIG. 4 is a sectional view taken along the - line in FIG. 3. 1...Packaging box, 2...Bottom plate, 3...Side plate, 4...
...Pinch board, 6...Flap, 7...Suspended holding plate for cylindrical object, 7a, 7a...Part of the outer suspended holding plate, 7b...Part of the central suspended holding plate, 8
...Inner plate, 11...Fold-in flap.

Claims (1)

[Scope of utility model registration request] A packaging box 1 made of paperboard or cardboard and having a rectangular planar shape, the upper edge 3a of at least one side plate 3 is in surface contact with a suspension holding plate 7 for a cylindrical object and the inner surface of the other side plate 3. and the inner plate 8.
The flap 6 is extended, and two strips are provided with a small interval α between the upper edge 3a of the side plate 3 and the suspended holding plate 7, and between the suspended holding plate 7 and the inner plate 8. Broken lines a, a' and b, b' are formed respectively, and the hanging retaining plate 7 has both side edges 6 of the flap 6.
Two elongated holes 9, 9 are formed which extend along the extending direction of the flap 6, and are located slightly inside the width β from a and 6a and inside the fold lines a' and b'. When the inner plate 8 is superimposed on the inner surface of the side plate 4, the portions 7a, 7a of the hanging holding plate on the outside of the pair of elongated holes 9, 9 have a cross-sectional shape along the direction in which the flap extends. It is shaped like a letter or a V-shape, and its lower end touches the bottom plate 2, and has broken lines c, c', d, and d', and the suspension holding plate between the pair of long holes 9, The portion 7b has an arbitrary number of broken lines c, c', e, whose lower end cannot come into contact with the bottom plate 2, and whose cross-sectional shape along the extending direction of the flap 6 is U-shaped. e', f, f', each upper edge 4a of the pair of tabs 4, 4.
, a suitable small interval is given between the two fold lines g and g', and the tip end portion is formed into a double flap 11a.
A packaging box characterized by an extended fold-in flap 11.