JP3155246B2 - paper box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray-shaped paper box having double side walls.

[0002]

2. Description of the Related Art In general, a paper box is used in which a blank as shown in FIG. 12 is assembled in a form as shown in FIG. This paper box has two pairs of side walls 51, 5 around the bottom plate 50.
1 and 52, 52, the side wall 51 is composed of an outer plate 53 and an inner plate 54 sequentially connected to the edge of the bottom plate 50, and the side plate 52 is sequentially connected to the side edge of the bottom plate 50. 55 and an inner plate 56, and outer plates 53, 55
Are connected by a folding piece 58 having a 45 ° fold line 57 extending from the corner of the bottom plate 50, and a holding piece 59 is provided continuously at both ends of the inner plate 56, and the folded piece 58 is folded in two along the fold line 57. By sandwiching the holding piece 59 between the outer plate 53 and the inner plate 54, the upright state of the side walls 51, 52 is maintained, and bottom edge pieces 60, 61 are provided at the tips of the inner plates 54, 56, respectively. Thus, the lower end of the inner plate 56 is prevented from protruding.

[0003]

In the above-described paper box, it is difficult to release the engagement between the side walls 51 and 52 when the paper box is made bulky at the time of disposal. In many cases, the folding piece 58 and the holding piece 59 are manually broken along, and it takes time to disassemble.

Accordingly, an object of the present invention is to provide a double-sided paper box which can be easily disassembled.

[0005]

In order to solve the above-mentioned problems, the present invention encloses a bottom plate around two pairs of side walls,
Each side wall is composed of an outer plate and an inner plate successively connected to the side edge of the bottom plate, and the outer plates of the adjacent side walls are connected by a folding piece having a 45 ° fold line extending from the corner of the bottom plate, and the adjacent one side The holding piece is extended from the inner plate of the side wall of the side wall, and the folded piece and the holding piece folded in half along the fold line are sandwiched between the outer plate and the inner plate of the other side wall to maintain the standing state of the peripheral wall, In a paper box provided with a bottom edge piece at the tip of each inner plate to prevent the lower end of the inner plate from protruding by superimposition of the adjacent bottom edge pieces, the inner plates of the opposed side walls are provided at the corners of the bottom plate. 45 ° perforation line from the corresponding part to the ridge line with the outer plate, and a perforation line extending vertically at the center
The outer plate is not provided with a fold line reaching the corner of the bottom plate, and the side wall is bent along the perforation line of the inner plate so that the outer plate can be flattened.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. In the blank shown in FIG. 1, the outer edge 2, the inner edge 3, and the bottom edge piece 4
However, an outer plate 5, an inner plate 6, and a bottom edge piece 7 are sequentially connected to the edge, respectively. The outer plates 2 and 5 are connected by a folding piece 9 having a 45 ° fold line 8 extending from a corner of the bottom plate 1, and holding pieces 10 are continuously provided on both end edges of the inner plate 3. The inner plate 3 is provided with a 45 ° perforation line 11 extending inward from the distal end angle to the base end and a perforation line 12 extending in the vertical direction at the center. The pad 13 shown in the figure is for reinforcing the bottom plate 1.

[0007] The blank is assembled into the form shown in FIG. 4 through the steps shown in FIGS. 2 and 3. At the time of this assembly, while folding the folding piece 9 along the fold line 8,
The outer plates 2 and 5 are simultaneously erected, and the inner plates 3 and 6 are bent inward and downward.
Forming the side wall 15 along the outer plate 5 with the inner plate 6;
Pads 13 are laid on the bottom plate 1 as necessary, and the bottom edge piece 4 is superimposed on the bottom edge piece 7.

In this assembled state, the folded pieces 9 and the holding pieces 10 are sandwiched between the outer plate 5 and the inner plate 6, whereby the upright state of the side walls 14, 15 is maintained, and the bottom edge piece 7 is held. The lower edge 4 prevents the lower end of the inner plate 6 from protruding.

When the paper box is discarded, as shown in FIGS. 5 and 6, the side wall 14 is bent along the perforation line 11 so that the side wall 14 is turned outward and the side wall 15 is turned inside. Can be flattened.

Further, as shown in FIGS. 7 and 8, when the side wall 14 and the bottom plate 1 are folded in two along the perforation line 12, the size becomes half, and the volume of dust can be reduced.

[0011] Further, since the machine wires 11 and 12 are not exposed to the outer surface when the paper box is used, the appearance in the packaged state is not spoiled.

[0012]

In addition, as shown in FIGS. 9 to 11,
The sewing lines 11 and 12 may be provided on the inner plate 6 in the width direction. In this case, if the fold line 16 corresponding to the sewing line 11 is provided on the holding piece 10 or the front part thereof is cut off, the side wall 15 can be easily bent at the time of flattening.

[0014]

As described above, in the paper box according to the present invention, the 45 ° sewing line extending from the portion corresponding to the corner of the bottom plate to the ridge line with the outer plate is provided on the inner plate of the opposed side wall. By bending the side wall along this perforation line, the side wall can be easily flattened and discarded without being bulky.

[Brief description of the drawings]

FIG. 1 shows a blank of a first embodiment of a paper box according to the present invention.

FIG. 2 is a perspective view showing an assembling process of the same.

FIG. 3 is a perspective view showing an assembling process of the same.

FIG. 4 is a perspective view showing an assembled state of the above.

FIG. 5 is a perspective view showing a flattening process of the above.

FIG. 6 is a perspective view showing the above flat state.

FIG. 7 is a perspective view showing a folding process of the above.

FIG. 8 is a perspective view showing a two-fold state of the above.

FIG. 9 is a view showing a blank of a second embodiment of the paper box according to the present invention;

FIG. 10 is a perspective view showing an assembled state of the above.

FIG. 11 is a perspective view showing a folded state of the above.

FIG. 12 is a perspective view showing a conventional paper box blank.

FIG. 13 is a perspective view showing an assembled state of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom board 2, 5 Outer board 3, 6 Inner board 7 Bottom edge piece 8 Fold line 9 Fold piece 10 Nipping piece 11, 12 Sewing wire 13 Pad 14, 15 Side wall

Claims (1)

(57) [Claims] 1. A bottom plate is surrounded by two pairs of side walls, each side wall being composed of an outer plate and an inner plate successively connected to side edges of the bottom plate, and an outer plate of an adjacent side wall extending from a corner of the bottom plate.
While being connected by a folding piece having a fold line of 5 °, a holding piece is extended from the inner plate of one adjacent side wall, and the folded piece and the holding piece folded in half along the fold line are connected to an outer plate of the other side wall. By holding the peripheral wall in an upright state by sandwiching it between the inner plates, a bottom edge piece is provided at the tip of each inner plate, and the lower edge portion of the inner plate is prevented from protruding by overlapping of the adjacent bottom edge pieces. In the paper box, a 45 ° perforation line extending from a portion corresponding to a corner of the bottom plate to a ridge line with the outer plate, and a perforation line extending vertically in a central portion are provided on the inner plate of the opposed side wall.
And a fold line extending to a corner of the bottom plate is not provided on the outer plate.