JPH0454904Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tray-shaped packaging box that is assembled from blanks such as corrugated boards. The present invention relates to a packaging box having a bottom panel, a side panel, and an end panel constituting the box, and in which the center portion of the bottom panel is folded to form a partition panel.

[Prior Art] A conventional structure of this type of packaging box is shown in, for example, Japanese Utility Model Application Publication No. 182315/1983. As shown in FIG.
A side panel 12 forming the side and end faces of the hexahedron.
The box is assembled by folding the end panel 13 inward and inserting the tip of the insertion flap 14 extending from the end panel 13 into the slit 15 formed in the side panel 12. Furthermore, in order to increase the bonding strength between the side panel 12 and the end panel 13, inner panels 16 and 20 forming the side or end surfaces are provided, and a bonding flap 23 provided by extending this inner panel is used to connect the adjacent side surface. The end faces are fixed together.

In the packaging box described above, the central portion of the bottom panel 11 is folded over to form a partition panel 19, and a slit 28 is provided at the height of the upper half of the central portion of the partition panel 19. On the other hand, a pair of partition plates 30 having the same height as the partition panel 19 are provided, and a slit 31' is provided at the height of the lower half of the partition plates 30 near one end. Then, insert the slit 31' of the partition plate 30 into the slit 28 of the partition panel 19 from above,
A partition panel 19 and a partition plate 30 are fixed in a plane + shape, and the box is divided into four parts.

[Problems to be solved by the invention] However, in the conventional packaging box described above, although the side and end surfaces are securely joined,
There was a drawback that the partition panel 19 was weak. That is, when an item is put into a packaging box and the packaging box is lifted from both sides while holding the end panels 13, 13 sides, the partition panel 19 bent at the center of the box opens from below, causing the packaging to collapse. Sometimes the box bends in two from the center. At this time, the partition plate 30 has the role of preventing the partition panel 19 from opening.
However, this partition plate 30 is easily removed by simply inserting the slit 31' provided on the lower side into the slit 28 provided on the upper side of the partition panel 19, so that the partition panel 19 is not opened. If it is put away, the partition plate 30 will also easily come out from the slit 28. For this reason, the partition panel 19
It was not possible to reliably prevent the door from opening from below.

The present invention was developed to solve the above-mentioned problems in the conventional technology, and allows the partition panel to be easily removed even when an item is placed inside a packaging box and lifted by holding the end face from both sides. To provide a tray-shaped packaging box that does not bend from the center when opened.

[Means for Solving the Problem] That is, in order to achieve the above object, in the present invention, a partition panel 19 is formed by folding the substantially central part of the bottom panel 11 constituting the bottom surface of the hexahedron, and the bottom panel A side panel 12 and an end panel 13, which constitute the side and end faces of the hexahedron, respectively, are raised from 11, and these side panels and end panels are connected to each other by a flap, and a partition plate 30 is installed so as to intersect with the partition panel 19. In a tray-type packaging box that is inserted to partition the box, the partition panel 1
A partition slit 28 is opened below the center of the partition plate 30, an insertion flap 31 is extended to the lower part of one end of the partition plate 30, and a bottom plate 32 is extended from the insertion flap 31 via a fold line. A tray-shaped packaging characterized in that the insertion flap 31 and the bottom plate 32 are inserted into the partition slit 28, and the bottom plate 32 is bent at right angles to the insertion flap to abut against the bottom panel 11. Provide a box.

[Function] In the tray-shaped packaging box according to the present invention, the partition slit 28 is provided at the lower center of the partition panel 19, so that the insertion flap 31 of the partition plate 30 inserted across the partition panel 19 is inserted into the partition slit 28 from the side of the partition panel 19. Furthermore, in this inserted state, the bottom padding piece 32 extending from the insertion flap 31 via the fold line is bent at a right angle from the insertion flap 31, so that the bottom padding piece 32 comes into contact with the bottom panel 11. At the same time, the insertion flap 31 is fixed by the bottom piece 32 so that it does not come out of the partition slit 28 of the partition panel 19. Therefore, even if the packaging box is lifted from both sides, the partition panel 19 is held by the insertion flap 31 of the partition plate 30 and the bottom piece 32 so as not to unfold, and the bottom piece 32
This allows the force applied from the bottom panel 11 to the partition plate 19 side to be received. Therefore, the partition panel 19
The box will open from the bottom and the packaging box will not bend from the center.

[Example] Figures 1 to 3 show an example in which this invention is applied to a double box.

First, as shown in Figures 1 and 2, the blank for this packaging box is made by punching out a piece of paperboard along solid lines and making fold lines at predetermined locations indicated by two-dot chain lines. It is being In this blank, two sets of bottom panels 11, 11 are provided, and these bottom panels 11, 11 are connected to each other by continuous partition panels 19, 19 via a fold line.
On the other hand, from the other three sides of the bottom panels 11, 11, side panels 12, 12 and end panels 13, 13, which constitute the side surfaces and end surfaces of the hexahedron, extend via fold lines, respectively.

Insertion flaps 14, 14, . . . extend vertically from the end panels 13, 13 in FIG. The ends of the insertion flaps 14, 14... are slightly rounded to facilitate insertion, and there is a barbed step 2 at the base of the end.
1, 21... are provided.

On the other hand, slits 15, 15, . . . are provided in the vertical direction in FIG. 2 at locations on the side panels 12, 12 corresponding to the insertion flaps 14, 14, . Further, from the side panels 12, 12, the inner flaps 16, 1 are connected through two fold lines provided horizontally in parallel and close to each other on the upper and lower sides of the blank in FIG.
6... are extended, and furthermore, flaps 16,
Joining flaps 23, 23 extend from 16... to the left and right sides in FIG. 2 via broken lines. These inner plugs 16, 16... and connecting plugs 23, 2
Projections 24, 24, . . . and 25, 25, . . . extend from the upper and lower sides of FIG. On the other hand, on the fold line between the side panels 12, 12 of the bottom panels 11, 11 and the end panels 13, 13, there are slits 26, 26, 27, 2
7... has been opened.

In the center of the partition panels 19, 19, partition slits 28, 28 are cut in the horizontal direction in FIG. Flaps 29, 29... are extended. moreover,
The partition plates 30, 30 are separated from the area surrounded by these auxiliary flaps 29, 29... and the inner flaps 16, 16..., and one end side of these partition plates 30, 30 is separated. Insert flaps 31, 31 are provided at the bottom of the insert flaps 31, 31, and bottom pieces 32, 32 extend downward from the insert flaps 31, 31 via a fold line.

In addition, the end panels 13, 13 and the partition panel 1
9 and 19 are all the same height, but a small section 33, 33 centered on the fold line between the side panels 12, 12 and the insert flaps 14, 14... is slightly higher than the other parts. There is.

When assembling this blank as a box, first cut out the partition plates 30, 30, then fold the fold lines at the boundaries of the partition panels 19, 19 outward (based on the box to be assembled, the same applies hereinafter), and then Fold the folded line inward. Then, the inner flaps 16, 16... and the joining flap 2
3, 23... protrusions 24, 24... and 25, 2
5... are respectively slits 26, 26... and 2
Insert into 7, 27... Furthermore, the tips of the insertion flaps 14, 14... are made into slits 15, 15...
Insert it into... On the other hand, the partition plates 30, 30 are
As will be explained in detail later, the insertion flap 3
1 and 31 are inserted into the partition panels 19 and 19 so that they are engaged with the slits 28 and fixed.

As shown in FIG. 1, the box assembled in this way is assembled between the adjacent side panels 12, 12 and the end panels 13, 13 by inserting the insert flaps 14, 14... into the slits 15, 15...
are fixed to each other. At the same time, the inner flaps 16, 16, which constitute the inner wall of the end face,
The protrusions 24, 24... are slits 26, 26...
The connecting flaps 23, 23, which are fixed to the bottom panels 11, 11 by being inserted into the bottom panels 11, 11, and extend integrally therewith, are connected to the protrusions 25, 2
5... are inserted into the slits 27, 27... to be fixed to the bottom panels 11, 11 on the side surfaces perpendicular to the inner flaps 16, 16.

Note that the box is divided into four sections by partition panels 19, 19 and partition plates 30, 30.
Also, the side panels 12, 12 and the insertion flap 14,
The raised portions extending to 14... become corner rising portions 33, 33....

Next, a pair of partition plates 30, 30 inserted into partition slits 28, 28 cut in the center of the partition panels 19, 19 will be explained with reference to FIGS. 3a to 3c. This partition plate 30 is obtained by cutting it out from the blank shown in FIG. 2, and as described above, has an insert flap 31 extending from one end thereof, and further has a bottom plate 32 on its lower side.
is formed. Furthermore, the insertion flap 31
A barb-like step 34 is provided at the upper end of the flap to prevent it from coming out easily after being inserted into the partition slit 28.

First, bend the bottom piece 32 of this partition plate 30 along the broken line shown in FIG. 3a, and
Overlap the flap 31 as shown in FIG. In the figure,
The arrow indicates the direction in which the bottom support piece 32 is bent. Then, the flap 31 and the bottom piece 32 are inserted into the partition slit 28 of the partition panel 19 in this shape, and then the bottom piece 32 is folded back again in the direction shown by the arrow in FIG. 3c, as shown in FIG. In this manner, the bottom support piece 32 is joined to the bottom panels 11, 11 in a planar manner. Thereby, the partition plate 30 is reliably fixed not only to the partition panel 19 but also to the bottom panel forming the bottom surface of the hexahedron.

[Effect of the invention] As is clear from the above explanation, according to the invention, when an item is placed in a packaging box and the packaging box is lifted from both sides while holding the end panels, the partition plate is It is possible to provide a packaging box that is opened from the bottom and does not bend from the center, and therefore can be held stably.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the assembled state of the tray-shaped packaging box of the present invention, Figure 2 is a developed view of the packaging box in Figure 1, and Figures 3a to 3c are the detailed structure of the partition plate and its insertion. A perspective view showing the process, and FIG. 4 is a perspective view of a tray-shaped packaging box according to the prior art. 11...bottom panel, 12...side panel, 13...
...End panel, 14...Insert flap, 15...
slit, 19...partition panel, 28...partition slit, 30...partition plate, 31...insertion flap, 32...bottom support piece.

Claims (1)

[Scope of utility model registration request] A partition panel is formed by folding the substantially central part of the bottom panel that forms the bottom surface of the hexahedron, and side panels and end panels that form the side and end surfaces of the hexahedron rise up from the bottom panel, and these side panels and end panels are made to stand up from the bottom panel. In a tray-type packaging box formed by connecting panels to each other with flaps and partitioning the box by inserting a partition plate so as to intersect with the partition panel,
A partition slit is opened at the lower center of the partition panel, an insert flap is extended to the lower part of one end of the partition plate, and a bottom piece is extended from the insert flap via the fold line, and these insert flaps and A tray-shaped packaging box characterized in that a bottom cover piece is inserted into the partition slit, and the bottom cover piece is bent at right angles to the inserted flap so as to come into contact with the bottom panel surface.