JPH0138021Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to improvements in packaging boxes.

BACKGROUND ART AND PROBLEMS TO BE SOLVED As is well known, this type of packaging box is intended to prevent items stored inside from moving around and to prevent them from being cracked or damaged.

Conventionally, in this type of packaging box, after storing an item, a spacer made of polystyrene foam or the like is inserted into the openings at both ends, and then lid pieces provided around the periphery of the openings at both ends are folded inward. The packaging was completed by fixing the lid pieces with stitches, tape, etc.

However, in cases where the lid piece is folded and fixed using stitches, tape, etc., the fixing work is difficult, and the number of man-hours for packing increases accordingly, making the packing work troublesome. At the same time, there is a drawback that work efficiency is reduced.

Further, in conventional packaging boxes, the adhesion between the stored articles and the spacer is not so good, and a gap is created between the two, which causes the articles to wobble during transportation.

This idea makes it easy to pack items with good workability, and also allows the items to be tightly and securely packed with no gaps between them and the spacer, and the lid piece can be held securely. The purpose is to provide a packaging box with a simple structure.

Means for Solving the Problems In order to achieve the above object, the present invention provides a plurality of lid pieces that can be bent inward at both end openings of a packaging box main body for storing articles, and a packaging box main body that stores articles, and a plurality of lid pieces that can be bent inward. Recesses for holding the bent lid piece are formed in a plurality of locations on the outer surface of the spacer interposed in the spacer in a rounded shape along the bending direction of the end of the lid piece, and the bent lid piece is placed in the recess. A groove is formed to lock the

Effect: According to this invention, articles can be tightly and securely packed with spacers without any gaps, and
The lid piece is reliably and firmly locked and held in the locking groove of the recess without being pushed back from the packaged state.

Embodiment Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings.

Figures 2 and 5 to 7 show an example of the packaging box according to the present invention, in which four lid pieces 2..., 3... are placed at four locations on the periphery of the opening at both ends of a rectangular box-shaped packaging box body 1. Each is provided so that it can be bent inward. At the openings at both ends of the main body 1, buffer spacers 4 and 5 made of substantially rectangular foamed polystyrene or the like are interposed. At four locations on the outer surface of the spacers 4, 5 along the periphery, recesses 6..., 7..., which lock and hold the ends of the lid pieces 2..., 3..., are cut out and have a required depth, respectively. There is. The recesses 6 and 7 are formed by the lid piece 2,
When the end portion of 3 is locked and held, the shape is taken into consideration so that the locking can be performed firmly without coming off or coming off. That is, in this example, the recesses 6 and 7
is formed in an R shape that follows the bending direction of the ends of the lid pieces 2 and 3, for example, the locus of the bending direction. The inner side portion thereof is formed into a cut-up shape approximately perpendicular to the surfaces of the spacers 4 and 5. Lid pieces 2, 3
When it is bent, its end follows the rounded shape of the recesses 6, 7 and presses against the surfaces of the recesses 6, 7 toward the stored articles. Conversely, the lid piece is pressed against the surface of the recess. In this case, as in the embodiment, locking grooves 10 are formed at the bottoms of the recesses 6 and 7, in which the ends of the lid pieces 2 and 3 are engaged, as shown in FIGS. 2 and 6. If you do, cover piece 2
..., 3... can be firmly held at the bending position by eliminating pushback from the bending end.

To package an article using the packaging box configured in this way, first store the article A in the packaging box body 1, then insert the spacers 4 and 5 into the openings at both ends, and then insert the lid piece 2. If you bend ..., 3... inward,
The ends of the lid pieces 2..., 3... imitate the rounded shapes of the recesses 6, 7 of the spacers 4, 5, and press the surfaces in the bending direction, so that the lid pieces 2..., 3... 4, 5 following the respective concave portions 6, 7,
When inserted, the spacers 4 and 5 are pushed inside toward the article A side. Thereby, there is no gap between the article A and the spacers 4, 5 at both ends of the box, and the article A can be tightly stored in close contact with the spacers 4, 5.

Therefore, the article A is buffered against external impact by the spacers 4 and 5, and is securely and firmly held in the packaged state in close contact with the spacers 4 and 5. In addition, when the lid pieces 2..., 3... are bent following the rounded shape of each recess 6, 7 and engaged with the groove 10 that is engaged with the spacer's recess pushed in, the lid pieces 2..., 3... can be folded by the engagement. The cover pieces 2..., 3... are reliably and firmly held and locked by preventing them from being pushed back from the bent state and by the reaction force of the push-in due to the rounded shape of the concave portion. is completed.

In this case, according to this example, there is no need to tape or stitch the lid piece as in the past, and the lid piece is bent inward and its ends are connected to the recess 6.
By simply inserting and locking the cover pieces 7, the lid pieces 2..., 3... can be securely fixed almost with one touch. Moreover, this ensures that the spacers 4 and 5 are securely held in a state in which the article A is held between the main body 1 from both sides. Furthermore, by bending and inserting the lid pieces 2..., 3... into the recesses 6..., 7..., the periphery of the opening of the packaging box body 1 has a double structure, so the strength of the packaging box including the periphery is lower than that of conventional lid pieces. This is further improved compared to something that simply bends and fixes.

Note that the number of lid pieces is not limited to that shown in the above embodiment, but can be modified as appropriate, such as two or three pieces on the periphery of the opening at both ends of the main body 1. FIG. 8 shows an example of this, in which two lid pieces 2..., 3... are provided at two locations above and below the periphery of the opening at both ends of the main body 1 so as to be bendable inward, and at the openings at both ends. Recesses 6 and 7 for locking and holding the end portions of the lid pieces 2 and 3 are cut out at two upper and lower locations along the above-mentioned periphery of the outer surface of the interposed spacers 4 and 5. In the recesses 6 and 7, locking grooves 10 similar to those in the above embodiment are formed. This embodiment also has the same effect as the above embodiment.

Figures 1, 3, and 4 show reference examples that are the premise of the embodiment of this proposal, and Figure 2, which shows the embodiment,
The same parts as in FIGS. 5 to 8 are designated by the same reference numerals. The difference is that the groove 1 that locks into the recesses 6 and 7
0 is not formed. for that,
The effect of the embodiment of reliably and firmly holding and fixing the lid pieces 2 and 3 cannot be expected to be that great. In other words, by forming the grooves 10 that engage the recesses 6 and 7 as in the embodiment, it is possible to reliably and firmly hold and fix the lid pieces 2, 3, and so on.

The protruding length of the lid pieces 2 and 3 from the open end of the main body 1 is set to such a length that when the cover pieces 2 and 3 are bent and inserted into the recesses 6 and 7, they can be held in place reliably and well. It is desirable to leave it there.

FIG. 9 shows the dimensional relationship between the lid pieces 2, 3, the recesses 6, 7, and the grooves 10 in which they engage in the above embodiment.
It can be bent at R1. On the other hand, the recesses 6 and 7 are formed into arcuate surfaces having a radius R2 and whose centers are offset from the bending fulcrums of the lid pieces 2 and 3 toward the outside of the packaging box. Grooves 10 are formed to engage the recesses 6 and 7. The bending radius R1 of the lid pieces 2 and 3 is
Although it is set to be approximately equal to the radius R2 of the circular arc surfaces of the recesses 6 and 7, R1 does not necessarily have to be equal to R2 in order to achieve the purpose of the present invention.

The length L from the bending fulcrum of the lid pieces 2, 3 to the bottom of the groove 10 where they are engaged is set to be sufficiently smaller than the bending radius R1 of the lid pieces 2, 3.

FIG. 9 shows the state before the start of packaging, and when the lid pieces 2 and 3 are bent from this state around the bending fulcrum, the tip trajectory of the lid pieces 2 and 3 will be on the arcuate surface of the recesses 6 and 7. It moves in the direction of the groove 10 to be locked along the circumference on the inner side, and receives a strong push-in reaction force on the surfaces of the recesses 6 and 7. While receiving this reaction force,
When the tips of the lid pieces 2 and 3 engage with the locking groove 10, R2>L and the lid pieces 2 and 3 are pushed back or come out because they are receiving a strong push-in reaction force. It is held and fixed securely and firmly without any problems.

Effects of the invention As described above, according to the packaging box of the present invention, after storing the goods, when the spacers are inserted into the openings at both ends of the box and the lid pieces are bent inward, the ends of the lid pieces push the spacers into the outer surface of the recess. Since it is pushed in following the shape and pressed toward the article, it is possible to tightly fit and store the article without creating a gap between the article and the spacers at both ends. Then, when the end of the lid piece is bent and engaged with the locking groove of the recess of the spacer, the lid piece is securely held by the engagement to prevent pushing back and the reaction force of pushing into the surface of the recess. Firmly held and locked. Therefore, the lid piece does not come off accidentally, and the article can be securely and firmly held and fixed in the packaged state.

Furthermore, since it is sufficient to simply bend the lid piece along the rounded surface of the recessed portion of the spacer and insert it, the work of packing the articles can be carried out efficiently and easily.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing a reference example of this proposal, Figure 3
4 is an exploded perspective view showing a reference example of the present invention. FIG. 2 is a sectional view showing an example of a recess formed in a spacer of a packaging box according to the present invention. Figures to Figure 7 are an exploded perspective view and a sectional view showing one embodiment of the packaging box according to the present invention, Figure 8 is an exploded perspective view showing another embodiment of the present invention, and Figure 9 is a lid piece of the packaging box according to the present invention. FIG. 4 is a cross-sectional view showing the dimensional relationship between the recess and the groove to be locked. A... Article, 1... Packing box body, 2, 3... Lid piece, 4, 5... Spacer, 6, 7... Recess.

Claims (1)

[Scope of utility model registration request] A plurality of lid pieces are provided inwardly at openings at both ends of a packaging box body for storing articles, and the bent lids are provided at a plurality of locations on the outer surface of a spacer interposed in the openings at both ends of the body. A packaging box characterized in that a recess for holding the lid piece is formed in a rounded shape along the bending direction of the end of the lid piece, and a groove for locking the bent lid piece is formed in the recess.