JPS6346347Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a paper box that can be folded flat and has excellent shape stability in an assembled state.

Prior Art Various types of paper boxes have been known that can be folded flat during transportation, storage, or when not in use, and are easy to assemble. For example, a typical example is a paper box with a lock bottom or glue lock bottom in which the bottom surface is formed by stacking four bottom flaps one on top of the other. However, when the above-mentioned conventional assembled paper box is assembled from a flat folded state and the four circumferential surfaces are expanded, it is not possible to maintain the correct rectangular opening state due to the creases in the folded state, and the assembled form is It has the drawback that it is not only unstable, but also the opening becomes distorted and unsightly.

Purpose of the invention The present invention was made with the aim of eliminating the above-mentioned drawbacks, and provides a paper box that can maintain an orderly opening shape by eliminating the restoring force caused by folding in a flat folded state. be.

Structure of the invention In a folding paper box that is open at the top and has four circumferential surfaces and a bottom surface, a flap is connected above the four circumferential surfaces and has a small notch for engagement and a small protrusion on the adjacent upper edge. Each of the flaps is folded back inward, and below each of the circumferential parts, a trapezoidal bottom flap, a dogleg-shaped notch, and a 45° fold line are alternately connected and adjacent to each other. The bottom flaps are glued together to form a glue lock bottom.
Further, a diagonal fold line and a horizontal fold line passing through the intersection of the diagonal fold lines are formed on each of the four circumferential surfaces, so that each circumferential surface portion is bulged outward in a pyramidal shape at its center, and It is formed by bulging inward in the shape of a pyramid at the boundary ridge of the surface.

Embodiment To explain more specifically the drawings showing the embodiment of the present invention, FIG. 1 is a perspective view of the paper box in an assembled state, and FIG. 2 is a developed view of the paper box. 2, 3, 4, and 5 are four peripheral surfaces forming the side surfaces of the paper box main body, and each of the peripheral surfaces 2, 3, 4, and 5 has diagonal fold lines 6, 7, and A horizontal fold line 8 is provided which passes through the intersection of the diagonal fold lines 6, 7. Short fold-back flaps 9, 10, 11, 12 are arranged above each of the circumferential surfaces 2, 3, 4, 5, and adjacent upper end edges of the fold-back flaps 9, 10, 11, 12 are arranged in series. Small notches 13, 13 and small protrusions 14, 14 for engagement are provided respectively, and when the respective folding flaps 9, 10, 11, 12 are folded back to the inner side, the small notches 13, 13 and the small protrusions 14, 14 are provided. Protrusion 1
4 and 14 are adapted to be engaged. Further, below each peripheral surface portion 2, 3, 4, 5, there are trapezoidal bottom flaps 15, 15 and a dogleg-shaped notch 16.
Bottom flap 18, 18 with 45° fold line 17
are arranged alternately, and the fold line 1 of the bottom flaps 18, 18 is in a state where the peripheral surfaces 2, 3 and 4, 5 are bent at 90 degrees as shown in FIG.
The outer adhesive portions 19, 19 of 7, 17 are glued onto the trapezoidal bottom flaps 15, 15 to form a so-called glue lock type bottom.
The glue margin piece 20 at one end is adhered to the peripheral surface part 5 at the other end, and the central part of each peripheral surface part 2, 3, 4, 5 bulges outward from the diagonal fold lines 6, 7 in the shape of a pyramid. and bulges inward from the horizontal fold lines 8, 8 in a dogleg shape at the boundary ridges of the respective circumferential surfaces 2, 3, 4, 5, forming a diamond-cut box having a double rim. This is what I did.

Effects of the invention As described above, the paper box main body 1 according to the invention is a bottomed paper box that is open at the top and has four circumferential parts.
Diagonal fold lines 6, 7 and horizontal fold lines 8, 8 passing through the intersections of the diagonal fold lines 6, 7 are provided in each of the four circumferential parts 2, 3, 4, 5, respectively, so that each circumferential part 2,
3, 4, and 5 are bulged outward in the shape of a pyramid at their center portions, and bulged inward in a dogleg shape at the boundary edges of each of the circumferential portions 2, 3, 4, and 5, and each of the circumferential portions 2 , 3, 4, 5, folding flaps 9, 10, 11, 12 each having a small notch 13 for engagement and a small protrusion 14 at the adjacent corner are arranged in succession. 11 and 12 are folded back to the inner side, and a trapezoidal bottom flap 15 and a dogleg-shaped notch 16 are provided below each peripheral surface portion 2, 3, 4, and 5.
and a 45° fold line 17 are arranged alternately, and the adjacent bottom flaps 15,1
Since the overlapping portions of 8 are glued together to form a glue-lock type bottom, each peripheral surface 2,
3, 4, 5 and the boundary ridges of the peripheral surfaces 2, 3, 4, 5 are not bulged inward or outward.As shown in FIG. 4, the bottom of the paper box body 1 is glue-locked. Since it is a mold, when the opposing ridges are pressed in the direction of arrow A, the other opposing ridges expand in the direction of arrow B, and the bottom flaps 15 and 18 are folded toward the inner surface of the paper box main body 1, and the box main body 1 is folded. It can be made into a flat rectangular shape, and unlike conventional foldable paper boxes, the material is not bulky, making it extremely convenient for transportation and storage. When assembling, by pressing the opposite ridges extending in the direction of the arrow B inward, a rectangular box shape with a bottom surface can be immediately formed. Moreover, in the present invention, the opening edge has a double structure, and as described above, diagonal fold lines 6, 7 and horizontal fold lines 8 are provided on each of the circumferential parts 2, 3, 4, and 5, respectively. After forming a rectangular box, by pushing out the central part of each peripheral part 2, 3, 4, and 5 from the inside to the outside, and pressing the central part of each ridge part from the outside to the inside, each peripheral part 2, The center portions of the boxes 3, 4, and 5 bulge outward in a pyramidal shape, and each ridge portion bulges inward in a dogleg shape, and as shown in FIG. , with a square opening and bottom part.
Almost rectangular horizontal ridges 8', 8' are formed which are shifted by 45 degrees, and these horizontal ridges 8', 8' allow folding in a flat folded state, that is, flatten the box body. The restoring force in the direction is prevented, resulting in a box with excellent morphological stability. Furthermore, as shown in FIG. 1, the paper box according to the present invention has a large number of inclined triangular parts partitioned by diagonal fold lines 6, 7 and horizontal fold lines 8 on the circumferential surface. If the square parts are made in a unique color, the box will be highly decorative and can be used for a variety of purposes, such as confectionery containers, writing utensil holders, and accessory cases.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and
Figure 1 is a perspective view of the assembled state, Figure 2 is a developed view,
3 is a perspective view of the semi-finished product, FIG. 4 is a sectional view showing the bottom part, and FIG. 5 is a plan view of FIG. 1. 1... Paper box main body, 2, 3, 4, 5... Surrounding part,
6, 7...Diagonal crease line, 8...Horizontal crease line, 9,
10, 11, 12...Flap flap, 13...
...small notch, 14...small protrusion, 15...bottom flap, 16...dog-shaped notch, 17...45° fold line, 18...bottom flap.

Claims (1)

[Scope of utility model registration request] It is a bottomed paper box that is open at the top and has four circumferential parts, and each of the four circumferential parts 2, 3, 4, and 5 has diagonal fold lines 6, 7 and diagonal fold lines 6, 7, respectively.
Horizontal fold lines 8, 8 passing through the intersection of
is bulged inward in a dogleg shape at the boundary ridge, and is provided with a small notch 13 and a small protrusion 14 for engagement at the adjacent corner above each circumferential surface 2, 3, 4, 5. The flaps 9, 10, 11, 12 are arranged in series, each flap 9, 10, 11, 12 is folded back to the inner side, and a trapezoidal bottom flap is provided below each peripheral surface portion 2, 3, 4, 5. 15, bottom flaps 18 having doglegged notches 16 and 45° fold lines 17 are arranged alternately, and the overlapping portions of the adjacent bottom flaps 15 and 18 are glued to form a glue-lock type bottom. A paper box characterized by its shape.