JPH10236466A - Bottom lid for packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottom lid for a packing box which is easy to set up and separable according to materials. SOLUTION: In the bottom lid, a bottom 12 is provided with a plurality of raisable cut-out pieces 12a and 12b, and, on the other hand, a cushion 11 is provided with insertion holes 2a and 2b for inserting the raisable cut-out pieces in and first fixing holes 2c and 2d and projections 21 and 22 for inserting and fixing the raisable cut-out pieces in, therefore the cushion 11 can be positioned and fixed on the bottom of a box body. Also, a bend part is formed by making two cuts in part of the upper end of each side wall and by bending the part between the cuts, on the other hand, a notch 2e for locking the bend part in is formed in the cushion 11 or extension parts 11e and 11f parallel with the bottom are formed on part of the upper end of each side wall, and, conversely, second fixing holes 2f and 2g for fixing the front ends of the extension parts in are made in the cushion 11. This makes it possible to fix the side walls of the box body into the cushion, set it up easily, and, further, separate the parts according to their materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom cover for a packing box, and more particularly to a combination of a cardboard and a foamable cushioning material such as styrene foam.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a bottom cover for a heavy-weight packing box such as an air conditioner or an electric refrigerator is provided with opposing walls in a corrugated paper box 1 having an open top. A pair of polystyrene foam cushioning materials 2 are arranged along 11 and the bottom surface 12, a packaged object 3 is placed on the cushioning material 2, and an outer box 4 opening downward from above is attached. , And the band 5 is fixed. At this time, if the cushioning material 2 is not fixed to the box 1, the cushioning material 2 moves when the packaged object 3 is placed on the cushioning material 2.
1 and was fixed. However, this method requires time and effort for bonding the cushioning material 2 to a predetermined position of the box body 1 and a time for drying, resulting in high cost. In addition, such a bottom cover for a packaging box becomes unnecessary once the equipment is installed, and it is required that the adhesive be peeled off and discarded for each material upon disposal.

For this reason, as shown in FIG. 7, notches 6 are provided on opposing side surfaces of the cushioning material 2, while the side walls 11 of the cardboard box 1 are fixed with staples or the like.
Cut-and-raised piece 7 that fits into the notch 6 on the bottom surface 12 of the box 1
Is considered. However, this configuration not only requires a man-hour for assembling the box with staples or the like, but also has a problem that it is difficult to separate the staples and separate the materials when discarding. Further, there is also a problem that the cushioning material 2 is easily detached depending on how to handle the case 1 in which the cushioning material 2 is incorporated.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and provides a bottom cover for a packing box that is easy to assemble a box, hard to remove a cushioning material, and easy to separate for each material. It is intended to provide.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a pair of foamable cushioning members are arranged along opposing side walls and a bottom surface of a box made of corrugated paper or the like having an open top surface. In the object, while providing a plurality of cut and raised pieces on the bottom surface, the cushioning material, an insertion hole through which the cut and raised pieces are inserted, and bending the cut and raised piece inserted through the insertion hole along the upper surface of the cushioning material. Then, a first fixing hole through which the tip of the bent bent piece was further bent and inserted was provided. In addition, a second fixing hole is provided in the cushioning material, wherein a part of the upper end of each of the side walls extends in parallel with the bottom surface, and the tip end of the extending portion is bent and inserted. Also, two notches are provided at a part of the upper end of each of the side walls,
While the gap between the cuts is bent inward, a cutout portion for locking the bent portion is provided in the cushioning material. In addition, a convex portion corresponding to a cut and raised hole formed by raising the cut and raised piece was provided on the bottom surface of the cushioning material. Further, the bent portion is formed such that the length of the tip portion is longer than the length of the root portion. Further, the notch was formed to have a larger width as being away from the side wall.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS With the above construction, in the bottom lid for a packing box of the present invention, a pair of foams are formed along opposing side walls and a bottom surface of a box made of corrugated cardboard or the like having an open top surface. A plurality of cut-and-raised pieces are provided on the bottom surface, and the buffer material is provided with an insertion hole through which the cut-and-raised piece is inserted; and a cut-and-raised piece inserted through the insertion hole. Since the first fixing hole which is bent along the upper surface and further bent and inserted into the bent and raised piece tip is provided, the cushioning material can be securely fixed to the bottom surface of the box body. Since a part of the upper end of the side wall extends in parallel with the bottom surface, the buffer member has a second fixing hole through which the tip of the extended portion is bent and inserted. Can be fixed to

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bottom cover for a packaging box according to the present invention. 1 is an exploded perspective view of an essential part showing an embodiment of a bottom cover for a packing box according to the present invention, FIG. 2 is an exploded sectional view of the essential part, FIG. 3 is an assembly view of the essential part, and FIG. It is. As shown in the figure, two pairs of cut-and-raised pieces 12a and 12b cut and raised facing the bottom surface 12 of a box 1 made of corrugated paper or the like having an open top surface are provided. On the other hand, the cut-and-raised piece 1 is provided on a foamable cushioning material 2 formed of a pair of polystyrene foam or the like.
Insertion holes 2a, 2b corresponding to 2a, 12b, first fixing holes 2c, 2d for inserting and fixing the tips of the cut and raised pieces 12a, 12b, and cut and raised the cut and raised pieces 12a, 12b. A protruding portion 21 fitted into the cut and raised holes 12c and 12d,
22 was provided.

In addition, two cuts 11a and 11b are formed at a part of the upper end of each side wall 11 of the box body 1 so that the length of the tip is longer than the root, and the gap between the cuts is bent inward. The bent portions 11c and 11d are formed, or, as shown by broken lines in the figure, extension portions 11e and 11f extending in parallel with the bottom surface 12 are provided at a part of the upper end of each side wall 11. On the other hand, the cushioning member 2 includes the bent portions 11c and 11c.
a notch 2e having a width that is increased as the distance from the side wall 11 for locking the extension
e, a second fixing hole 2 into which the tip of 11f is bent and inserted.
f, 2 g.

Next, an assembling procedure of the above configuration will be described. First, the cut and raised pieces 12a and 12b provided on the bottom surface 12 of the box 1 are inserted into the insertion holes 2a and 2
b, the cutting pieces 12a, 12b are bent in parallel with the bottom surface 2 and along the cushioning material 2, and the cutting pieces 12a, 12b
The buffer material 2 is fixed to the box 1 by inserting and fixing the tip of b into the first fixing holes 2c and 2d provided in the buffer material 2, respectively.

Next, the bent portions 11c and 11d formed on the side walls 11 of the box body 1 are respectively fitted to and engaged with the notches 2e provided in the cushioning material 2, or the upper ends of the side walls 11 are formed. The extension portions 11e and 11f formed in the portions are aligned with the cushioning material 2, and the tips of the extension portions 11e and 11f are inserted into the second fixing holes 2f and 2g provided in the cushioning material 2 and fixed. , The side wall 11 is fixed to the cushioning material 2.

By disassembling according to the procedure opposite to that described above, the box 1 made of corrugated cardboard or the like and the foamable cushioning material 2 made of styrene foam or the like can be separated.

[0012]

As described above, according to the bottom cover for a packing box according to the present invention, a pair of foamable cushioning members are formed along the opposing side walls and bottom surface of a box made of corrugated cardboard or the like having an open top surface. In the arrangement, a plurality of cut-and-raised pieces are provided on the bottom surface, while the buffer material has an insertion hole through which the cut-and-raised piece is inserted, and a cut-and-raised piece inserted through the insertion hole along the cushion material upper surface. A first fixing hole into which the tip of the bent and bent piece is further bent and inserted; and a convex portion fitted into the bent and formed hole of the cut and raised piece. Therefore, the cushioning material can be positioned and fixed on the bottom surface of the box, and a part of the upper end of each side wall extends in parallel with the bottom surface, while the tip of the extending portion is bent in the cushioning material. To provide a second fixing hole, or to provide two cuts at a part of the upper end of each side wall, While forming the bent portion by bending, in the cushioning material, it is provided with the notch for locking the bent portion,
The side wall of the box can be fixed to the cushioning material.
When it becomes unnecessary, it can be disassembled and separated into corrugated paper and styrofoam or the like, so that it is possible to provide a bottom lid for a packing box that is easy to assemble and can be separated for each material.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an essential part showing an embodiment of a bottom cover for a packing box according to the present invention.

FIG. 2 is an exploded cross-sectional view of an essential part showing one embodiment of a bottom cover for a packing box according to the present invention.

FIG. 3 is an assembly view of a main part showing an embodiment of a bottom cover for a packing box according to the present invention.

FIG. 4 is a sectional view of a main part showing an embodiment of a bottom cover for a packing box according to the present invention.

FIG. 5 is an exploded perspective view of a main part showing a conventional bottom cover for a packing box.

FIG. 6 is a sectional view showing a conventional bottom cover for a packing box.

FIG. 7 is a cross-sectional view of a main part showing another example of a conventional bottom cover for a packing box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 2 Buffer material 2a, 2b Insertion hole 2c, 2d First fixing hole 2e Notch 2f, 2g Second fixing hole 11 Side wall 11a, 11b Notch 11c, 11d Bend part 11e, 11f Extension part 12 Bottom 12a, 12b Cut and raised piece 12c, 12d Cut and raised hole 21, 22 Convex portion

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuo Ueda 1116 Suenaga, Takatsu-ku, Kawasaki City Inside Fujitsu General Limited

Claims (6)

[Claims] 1. A method of arranging a pair of foamable cushioning materials along opposing side walls and a bottom surface of a box made of corrugated cardboard or the like having an open top surface, wherein a plurality of cut and raised pieces are provided on the bottom surface. In the cushioning material, an insertion hole through which the cut and raised piece is inserted, the cut and raised piece inserted through the insertion hole is bent along the upper surface of the cushioning material, and the bent and raised piece tip is further bent. A bottom lid for a packaging box, wherein a first fixing hole for inserting the bottom is provided. 2. A second fixing hole for extending a part of an upper end of each of the side walls in parallel with a bottom surface, and providing a second fixing hole in the cushioning material by bending a tip of the extending portion and inserting the bent portion. The bottom cover for a packing box according to claim 1, wherein 3. A cutout is provided at a part of the upper end of each of the side walls to bend inward between the cuts, while a cutout is provided in the cushioning material to lock the bent portion. The bottom cover for a packing box according to claim 1, wherein: 4. The packing according to claim 1, wherein a convex portion corresponding to a cut-and-raised hole formed by raising the cut-and-raised piece is provided on a bottom surface of the cushioning material. Box bottom lid. 5. The bottom cover for a packing box according to claim 3, wherein the bent portion is formed such that the length of the tip portion is longer than the length of the root portion. 6. The notch portion is formed to have a larger width as it goes away from the side wall.
The bottom lid for the packing box described.