JPH0720015Y2 - Packaging box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a foldable packaging box, and more particularly to a triangular packaging box suitable for storing pizza and the like.

[Prior Art] Recently, it is often the case that a pizza or the like is brought back with a cut triangular shape instead of the large circular shape. In this case, the packaging box is preferably in the shape of a triangular box and can be flatly folded for convenient storage. Conventionally, as a flat box that can be folded flat, for example, as disclosed in Japanese Utility Model Laid-Open No. 1-63618,
It is known that one side plate is provided with a vertical fold line and the bottom plates attached to each other are provided with fold lines.

[Problems to be Solved by the Invention] However, the one disclosed in the above-mentioned conventional publication is a sack pasting type triangular box, and it is possible to fold it flatly in a tray type triangular box which is particularly convenient for storing pizza and the like. There has never been anything that can be done.

The present invention has been made in view of the above problems, and an object thereof is to provide a tray-shaped triangular box-shaped packaging box that can be flatly folded.

[Means for Solving the Problems] In order to achieve the above object, the packaging box of the present invention comprises a body box having side plates on two sides of a triangular bottom plate and two sides of a triangular top plate. A lid box having side plates, respectively, is connected via a rear plate to each other at the bottom plates of the bottom plate and the top plate, and at the rear end of the side plate of the body box and the side plate of the lid box that overlaps the outside, the side plate rear end. A corner flap that has a diagonal line that bisects a corner where the rear plate side end intersects, and a region behind the diagonal line is attached to the inner surface of the rear plate and is folded in two. Further, a diagonal fold line extending from the rear end corner portion of the side plate having the corner cliff to an extension of the fold line between the rear plate side end and the corner flap is provided, and a vertical fold line connecting the apexes of the bottom plate and the top plate. Is provided.

[Operation] In this configuration, the corner flap is attached to the inner surface of the rear plate with the area behind the diagonal folding line provided on the flap attached to the inner surface of the rear plate that connects the body box and the lid box. The triangular tray-shaped body box and the lid box are overlapped so that the side plates on the side having the corner flaps are folded in two so as to overlap with each other. The tray-shaped triangular box-shaped packaging box is formed by such simple assembly. In addition, it can be flatly folded by folding the whole body in two through a vertical fold line connecting the apexes of the bottom plate and the top plate.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a developed plan view showing an embodiment of the present invention.

As is apparent from FIG. 1, a body box 4 having side plates 2 and 3 on two sides of a triangular base plate 1 and a triangular top plate 5 are also provided.
A lid box 8 having side plates 6 and 7 on two sides thereof is connected to each other through a rear plate 9 at the bottom sides of the bottom plate 1 and the top plate 5. Corner flaps 10,14 are provided at the rear ends of both side plates 6,7 of the lid box 8 and both side ends of the rear plate 9 via folding lines 12,13,16,17.
The corner flaps 10 and 14 are provided with diagonal fold lines 11 and 15 that bisect the angle α forming the corners of the corner flaps 10 and 14. (Lower side)
The two regions are adapted to be folded in while being attached to the inner surface of the rear plate 9. Here, the side plates 2 and 3, the side plates 6 and 7, and the rear plate 9 are each configured to have the same width, but they are slightly different as long as there is no hindrance in stacking the body box 4 and the lid box 8. May be. In addition, the side plates 6 and 7 are provided with folding lines 13 and 17 between the corner flaps 10 and 14 and the rear plate 9 from the rear end corners.
The bottom plate 1 is provided with diagonal fold lines 18 and 19 extending on the extension of
In the center of the top plate 5, a vertical fold line 27 connecting the vertices is provided. Further, in order to lock the body box 4 and the lid box 8 in an overlapped state, the locking insertion pieces 20 and 21 having both ends cut into the side plates 6 and 7 are provided on the side plates 2 and 3, respectively. U-shaped locking notches 22 and 23 for locking are provided respectively, and a sticking piece 24 is continuously provided at the tip of the side plate 7 through a fold line of the notch 25, and the side plate is formed.
The notch 25 and the locking projection 26 provided at the tips of the second and third parts (the lower side in the drawing) are locked.

On the other hand, circular holes 28 are formed at two positions on the left and right of the rear plate 9.

Next, in the above configuration, the assembling method will be described. First, from the unfolded state of FIG.
Bend 10, 14 and the rear end of the side plates 6, 7 inward through the fold lines 13, 18 and 17, 19 and the rear plate (lower side) region of the corner flaps 10, 14 from the diagonal fold lines 11, 15 is a rear plate. 9 is attached to the inner surface of the side plate 7 (see FIG. 2), and the attachment piece 24 at the tip of the side plate 7 is attached to the inner surface of the opposite side plate 6. From this state, if it is folded in half through the central vertical folding line 27, it can be folded flat as shown in FIG.

On the other hand, after returning the flatly folded state to its original state, the side plates 2 and 3 of the body box 4 are folded up, and the lid box 8 is superposed on the body box 4 and folded inward. The corner flaps 10 and 14 are folded inwardly through the diagonal fold lines 11 and 15 (see FIG. 4), and finally the body box 4 and the lid box 8 are superposed as shown in FIG. Is completed.
The locking inserts 20, 21 and the locking notches 22, 23 provided on each side plate and the locking projections 26 and the notches 25 are locked to each other, so that the body box 4 and the lid box 8 are The overlapping state of is maintained.

[Effect of the Invention] As described in detail above, according to the packaging box of the present invention, the corner flap having the diagonal fold line is provided on the inner surface of the rear plate connecting the body box and the lid box through the diagonal fold line. The triangular tray-shaped body box and the lid box overlap with each other so that the side plate on the side having the corner flaps is folded outward so that the tray-shaped triangular box-shaped packaging box is formed by simple assembly. be able to. In addition, since the whole box can be folded in two and folded flat through the vertical fold line connecting the bottom plate and the top of the top plate, it is convenient because it does not take up space during transportation and storage before use.

[Brief description of drawings]

FIG. 1 is a developed plan view showing an embodiment of the present invention, FIG. 2 is a developed plan view showing a state before assembly, FIG. 3 is a plan view showing a flat folded state, and FIG. 4 is an assembly process. FIG. 5 is a perspective view showing the state of FIG. 5, and FIG. 5 is a perspective view after the assembly is completed. 1 ...... Bottom plate 2, 3 ...... Side plate 4 ...... Body box 5 …… Top plate 6, 7 …… Side plate 8 …… Lid box 9 …… Rear plate 10, 14 …… Corner flap 11, 15 …… Diagonal line 18,19 …… Slanting line 20,21 …… Locking insert 22,23 …… Locking notch 24 …… Sticking piece 25 …… Notch 26 …… Locking protrusion 27 …… Vertical fold line 28 …… Circle Hole

Claims (1)

[Scope of utility model registration request] 1. A body box having side plates on two sides of a triangular bottom plate, and a lid box having side plates on two sides of a triangular top plate are provided on the bottom plate and the top plate via a rear plate. At the rear end of the side plate of the side plates of the body box and the lid box that are connected to each other at the bottom side and overlaps with the outside, a diagonal fold line that bisects the corner portion where the rear end of the side plate and the side end of the rear plate intersect And a corner flap that is attached to the inner surface of the rear plate in a region rearward of the diagonal fold line and is folded in two, further from the rear end corner portion of the side plate having the corner flap to the rear plate side end. A packaging box, characterized in that an oblique fold line extending on an extension of a fold line between the corner flap and a vertical fold line connecting the apexes of the bottom plate and the top plate is provided.