JPS6143694Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bottom cover, called the lower part, of a box for packing electric refrigerators, electric washing machines, coolers, etc.

Conventionally, when packing an electric refrigerator, for example, the first
As shown in the figure, a leg stand spacer 2 made of styrofoam is glued to the bottom cover 1, which is said to be below the waist, and an electric refrigerator 3, which is an item to be packed, is stably placed on the leg stand spacer 2. A rectangular cylindrical cardboard outer box 5 with an open bottom end was placed over the corner via a styrofoam protective spacer 4, and the outer periphery was tightened with a band 6 for packaging. As shown in FIG. 2, the bottom lid 1 in FIG. It was formed by fixing it with adhesive (e.g. rubber adhesive). As described above, since it is necessary to use staples and adhesives, it has to be assembled in advance and transported, which has the disadvantage of having to be stretched during transportation, and the number of assembly steps increases, resulting in high costs. In addition, both ends 8 of the bottom cover 1 protrude from the sides of the outer box 5, resulting in a large package.

The present invention was developed to eliminate the above-mentioned drawbacks. First, a box is formed by simply cutting out a piece of cardboard backing into a predetermined shape and folding it. The leg stand spacer is formed at an acute angle, and the leg stand spacer is clamped and fixed by the repulsive force against bending of the side plate.

An embodiment of the present invention will be described below with reference to FIGS. 3, 4, 5, and 6. FIG. 3 is a plan view before assembly, showing a state in which a mount such as cardboard is cut out into a predetermined shape. In this diagram,
Reference numeral 10 denotes a quadrilateral bottom plate, and the left and right outer plates 1 are attached to the left and right outer sides of the bottom plate 10 through folds 11, 11.
2, 12 are provided, and these left and right outer plates 12,
In the figure 12, there are parallel folds 1 on the left and right sides.
3, 14, 13, 14 through the left and right inner plates 15,
15 are provided. Said left and right outer plates 12,1
The upper and lower edges 29, 30, 29, 30 of the folds 13, 14, 13, 14 are inclined at an acute angle slightly smaller than 90 degrees with respect to the folds 11, 11.
The upper and lower edges 3 of the left and right inner plates 15, 15 intersect with each other.
1, 32, 31, 32 are the folds 13, 14, 1
It is formed at an obtuse angle slightly larger than 90 degrees with respect to 3 and 14. Note that the upper and lower edges 29, 30, 29, 30, 31, 32, 31, 3
2 are folds 11, 11, 13, 14, 1 respectively
3 and 14 may be formed at 90 degrees. The bottom plate 10 has folds 16 on the upper and lower outer sides in the figure.
Front and rear side plates 17, 17 are provided with the front and rear side plates 17, 17 interposed therebetween, and diagonal folds 18, 18 forming an acute angle slightly smaller than 90 degrees with respect to the folds 16, 16 are provided on the left and right outer sides of these front and rear side plates 17, 17. , 18, 18, and the outer upper edges 19, 19, 19, 19 are in line with the outer edges 20, 20 of the front and rear side plates 17, 17, and the inner lower edges 21, 21, 21, Folding pieces 22, 22, 22, 22 whose 21 are substantially perpendicular to the diagonal folds 18, 18, 18, 18 are provided. The left and right outer plates 12, 12 include
A rectangular notch locking piece 23 having a vertically symmetrical position with respect to the transverse center line and having a predetermined inclination with respect to the folds 11, 11 has a fold 24 and projects toward the front. It is provided.

In such a configuration, the folding pieces 22, 2
2, 22, 22 diagonally fold 18, 18, 18,
18 inwardly, the front and rear side plates 1
7, 17 and the left and right outer plates 12, 12 are bent inward along fold lines 16, 16, 11, 11, respectively, to stand up along the entire periphery of the bottom plate 10. Next, the folding pieces 22, 22, 22, 22
The left and right inner plates 15, 15 are folded inward while locking the upper edges 19, 19, 19, 19 with the cut locking pieces 23, 23, 23, 23, respectively, as shown in FIGS. 4 and 5. A box 25 is formed as shown in FIG. At this time, the upper edge 19 of the folding piece 22 is formed so that its inclination is equal to the inclination of the notch locking piece 23, and the left and right outer plates 12, 12 and the left and right inner plate 1
It is held between 5 and 15. Into the box 25 formed in this manner, leg stand spacers 26, 26, as shown in FIG. 6, are inserted as buffer members made of styrofoam or the like. This leg stand spacer 2
6 and 26 are formed into a trapezoidal shape having a notch 27 for inserting the lower end and legs of the electric refrigerator;
The inclined end surfaces 28, 28 are connected to the box body 25.
The left and right inner plates 15, 15 and outer plates 12, 1
2, and are formed so as to be in contact with each other. For this reason, the left and right inner plates 1
5 and 15 act to sandwich and fix the leg stand spacers 26 and 26 with a repulsive force that opposes the bending. Due to this reaction, the left and right inner plates 15, 15
The movement of the legs is blocked by the leg stand spacer 26 and does not open outward, and stands up at an acute angle with respect to the bottom plate 10. Therefore, the left and right outer plates 12, 12 also have an acute angle with respect to the bottom plate 10. Standing and holding. In addition, these left and right side plates 12, 12, 1
The front and rear side plates 17, 17 connected to the folding pieces 22, 22, which are sandwiched by the folding pieces 5, 15 and whose upper edges 19 are locked by the cut-out locking pieces 23, are also slightly tilted inward with respect to the bottom plate 10 and are substantially perpendicular to the bottom plate 10. Maintained standing. As described above, the side plates are firmly held and the bottom cover is sturdy.

In the embodiment described above, the upper edge 19 of the folding pieces 22, 22 is locked by the end edge of the notch locking piece 23, but the invention is not limited to this. For example, as shown in FIG.
As shown in FIG. 2, the upper part of the folding piece 22 may be held and locked by the side surface of the long notch locking piece 23, or as shown in FIG. It is also possible to bend the folded piece 22 at a right angle and lock the upper edge of the folded piece 22 with its side surface.

In the above embodiment, the cut-out locking pieces 23 are formed on the left and right outer plates 12, 12, but the invention is not limited to this, and the cut-out locking pieces 23 are formed on the left and right inner plates 15, 15 as shown in FIG. 7. You may.

In the embodiment, two folds 13, 14 are provided between the left and right outer plates 12, 12 and the left and right inner plates 15, 15.
However, the present invention is not limited to this, and it may be a single fold.

As mentioned above, this invention allows a piece of cardboard or other mount cut out into a predetermined shape to be assembled on-site without using staples or adhesives, so it can be transported as a flat mount without being stretched. It also requires fewer assembly steps and costs are lower than conventional methods. In addition, since the opposing end surfaces of the bottom cover stand up at acute angles with respect to the bottom plate surface, it is easy to cover the outer cardboard, and there is no need to expose the ends of the bottom cover to the outside of the side of the outer box. You can make your appearance smaller. Furthermore, since the outer edge of the folding piece and the outer edge of the front and rear side plates are aligned in a straight line, it is easy to cut the mount such as cardboard, and there is no waste at all and the yield is high.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional packaging state, FIG. 2 is a perspective view showing a conventional bottom cover, FIG. 3 is a developed plan view of an embodiment of the bottom cover for a packaging box according to the present invention, and FIG. The figure is a longitudinal front view after assembling the bottom cover shown in Fig. 3, Fig. 5 is a side view after assembling, and Fig. 6 is a perspective view showing the state in which the leg stand spacer is inserted into the bottom cover after assembling. , FIGS. 1, 2, and 3 are partial sectional views showing cut-out locking pieces in other embodiments, respectively. 10... Bottom plate, 11, 13, 14, 16, 1
8, 24...Fold line, 12...Right and left outer plates, 15
... Left and right inner plates, 17... Front and rear side plates, 19, 20
...Top edge, 21...Bottom edge, 22...Folding piece, 23
... Notch locking piece, 25 ... Box body, 26 ... Leg stand spacer as a buffer member, 27 ... Notch, 28 ... End surface, 29, 31 ... Upper edge, 30,
32...lower edge.

Claims (1)

[Claims for Utility Model Registration] (1) Left and right outer plates, left and right inner plates are provided on the left and right sides of a quadrilateral bottom plate, with folds formed in this order, and at least one of the left and right outer plates or the left and right inner plates is provided. A cut-out locking piece is provided in the bottom plate, and front and rear side plates are provided by making folds on the front and rear sides of the bottom plate, and on the left and right sides of the front and rear side plates, there are grooves that are slightly smaller than 90 degrees with respect to the folds with the bottom plate. Folding pieces connected with diagonal folds forming an acute angle, whose outer upper edges are in line with the outer edges of the front and rear side plates, and whose inner lower edges are substantially perpendicular to the diagonal folds. , the folding piece is folded inward, the front and rear side plates, the left and right outer plates are made to stand up along the edge of the bottom plate, and the upper edge of the folding piece is locked with the cut locking piece while the left and right inner side plates are made to stand up along the edge of the bottom plate. A bottom lid for a packaging box, which is formed by folding a plate inward to form a box body, and inserting into the box body a buffer member whose both end surfaces are sandwiched by the bending repulsion force of the left and right inner plates. (2) The notched locking pieces consist of notched protrusions provided on the left and right outer plates.Claim No. 1 for Utility Model Registration
Bottom lid for packaging box as described in section. (3) The notched locking pieces consist of notched protrusions provided on the left and right inner plates.Claim No. 1 for Utility Model Registration
Bottom lid for packaging box as described in section.