JPH09216618A - Tray-shape packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the mechanical strength of the superposed part of a box by a method wherein at the end part of the box body, a flat panel for which a flat surface being approx. in parallel with the bottom panel is formed, is multiply placed for the reinforcement. SOLUTION: Side panels 12, 12 which are extended from a bottom panel 11, are respectively bent at a right angle, and erected. In the meantime, internal flaps 14, 14 which are extended from the side panels 12, 12 are bent to the inside of the box body, and are superposed at the location of the end surface of the box body, and contracted parts 14a, 14a at the leading ends, are engaged with each other. On the other hand, end panels 13, 13 which are extended from the bottom panel 11, are bent at a right angle and erected. In addition, from the leading edges of the end panels 13, 13, flat surface panels 19, 19 are bent at a right angle to the inside of the box body, and from the flat surface panels 19, 19, internal end panels 16, 16 are bent, and joined to the internal sides of the internal panels 14, 14. Also, insertion flaps 17, 17 are bent at a right angle, and inserted between the internal flaps 14, 14 and bottom panel extended parts 20, 20. In the end, reinforcing panels 18, 18 are bent inward from the end panels 13, 13, and a superposed part of the box is reinforced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray type packaging box assembled from a blank such as a cardboard box. Particularly, the present invention is a type in which a side panel and an end panel of the box are raised from a bottom panel which constitutes the bottom of the box, and adjacent end panels and side panels are fixed to each other by a side panel or a fixing member extending from the end panel. And a tray-type packaging box having a flat portion on the end of the box for placing another packaging box.

[0002]

2. Description of the Related Art As a tray type packaging box assembled from a blank such as a corrugated cardboard box, for example, Japanese Utility Model Publication No. 38-1
The one shown in Japanese Patent No. 6391 is known. Such a conventional packaging box is as shown in FIGS. 9 and 10 attached hereto, and in FIG. 9, the bottom panel 1 constituting the bottom surface of the box is taken along the fold line indicated by the chain double-dashed line. The side panels 2 and 2 and the end panels 3 and 3 forming the side surface and the end surface are bent to stand up, and the tips of the insertion flaps 4 and 4 extending from the side panels 2 and 2 are provided in the end panels 3 and 3. Insert into the slits 5, 5 ... Further, the inner end panels 6, 6 are extended from the end panels 3, 3 through two parallel folding lines, and the projecting pieces 7, 7 projecting from the lower side of the inner end flaps 6, 6 are attached to the bottom panel 1. By inserting into the slits 8 provided at the ends, a box as shown in FIG. 10 is assembled.

In this type of box, if the side panels 2 and 2 and the end panels 3 and 3 are only fixed by the above-mentioned fitted state of the so-called insertion flaps 4, 4, ... If some force is applied from the inside to the outside of the box, the above-mentioned fitted state is easily released and the box is disassembled. Therefore, in the conventional packaging box, the end panels 3, 3
The other inner flap 6, 6 is extended inside the ..., the flap 6, 6 is bent to the inside of the box, and the projections 7, 7 protruding from this are slits 8 formed in the bottom panel 1.
I am trying to fix it by inserting it into 8 ... As a result, the ends of the box are reinforced, and at the same time, the insertion flaps 4, 4, ... Are held so as to be sandwiched between the inner flaps 6, 6 and the end panels 3, 3.

Further, the flat portion thus formed between the end panels 3 and 3 and the inner end panels 6 and 6 is a bottom panel 1 of other packaging boxes when stacking other packaging boxes. Will be the part to put. Then, the flat portion is connected to the end portions of the side panels 2 and 2 and the insertion flaps 4 following the end portions.
By lowering the height from the side of 4 ..., it is possible to prevent misalignment of other packaging boxes placed on this flat portion.

[0005]

However, in the conventional tray type packaging box described above, the so-called end panel 3 is used.
There is a problem in that the strength of the flat portion formed between the inner end panel 6 and the inner end panel 6 is weak, and the packaging boxes cannot be stacked in multiple stages. Further, if the width of the plane portion is widened, the strength becomes insufficient, so that the width of the portion cannot be widened. Therefore, there is a problem that the bottom surface of the packaging boxes stacked on top of the packaging box is likely to be dislocated from the flat surface portion and easily collapse.

In view of the problems in the conventional tray-type packaging box, the present invention is excellent in mechanical strength in a portion where the packaging boxes are stacked, and in particular, even if the portion is wide, sufficient strength can be obtained. The purpose is to provide a packaging box that does not collapse.

[0007]

According to the present invention, in order to achieve the above-mentioned object, a side panel 12 which constitutes a side surface and an end surface of a bottom panel 11 which constitutes a bottom surface of a box body, respectively. 12 and the end panels 13 and 13 are respectively extended, and in the tray type packaging box in which the side panels 12 and 12 and the end panels 13 and 13 are fixed to each other, the side panels 12 and 1
Inner flaps 14, 14 ... from the edge of 2 toward the end surface of the box
Is bent and extended, and the end panels 13 and 13 and the flat panels 19 and 1 are provided along the end face of the box from the front side of the bottom panel 11.
9, inner end panels 16, 16 and bayonet flaps 17,
17 are sequentially bent and extended, and the insertion flaps 17, 17 ... At the ends are inserted between the bottom panel 11 and the lower sides of the inner flaps 14, 14. This allows
A flat surface, which is substantially parallel to the bottom panel 11 formed by the flat panels 19 and 19, is formed at the end of the box body.
9, 19 to end panels 13, 13, inner end panels 16, 1
6 and the inner flaps 14, 14 inserted between them are multiply reinforced to withstand the load applied thereto.

Further, reinforcing flaps 18, 18 are bent from both sides of the end panels 13, 13 to the inside of the box body, and the reinforcing flaps 18, 18 are attached to the inner end panels 16, 16 or the inner flaps 14 attached to the inside thereof. The leading edge is pressed against 14 to fix the fixed state of the end of the box body.

That is, the tray type packaging box according to the present invention is bent and extended from the edges of the side panels 12 and 12 extending from the bottom panel 11 constituting the bottom surface of the box body toward the end surface of the box body. Inner flaps 14, 14 ... and the bottom panel 1
End panels 13 and 13 bent and extended along the end surface of the box from the front edge of 1, and bent and extended from the upper side of the end panels 13 and 13 to the inside of the box, and the bottom of the end of the box. Flat panels 19, 19 forming a plane substantially parallel to the panel 11.
And inner end panels 16 and 1 that extend from the front sides of the flat panels 19 and 19 along the inner surfaces of the end portions of the box body and that sandwich the inner flaps 14 and 14 between the end panels 13 and 13.
6 and insertion flaps 17, 17 ... Extending from the inner end panels 16, 16 and inserted between the bottom panel 11 and the lower sides of the inner flaps 14, 14. Is.

Further, a reinforcing flap 18, which is bent from both sides of the end panels 13 and 13 to the inside of the box body, and whose leading edge is pressed against the inner end panels 16, 16 or inner flaps 14, 14 attached to the inside, 18 is provided.
In such a tray type packaging box, the flat panels 1 on both end sides of the box body on which the other packaging boxes stacked are placed.
Reference numerals 9 and 19 denote end panels 13 and 13 which are erected from the bottom panel 11 and extended, and insertion flaps 17 and 17 at the tip are inserted between the bottom panel 11 and the inner flaps 14 and 14 to form an inner end panel. It is multiply supported by 20, 20 and inner flaps 14, 14 inserted therein.
Therefore, the flat panels 19 and 19 have high load resistance against the loads of the tray-type packaging boxes stacked thereon.

The flat panels 19, 19 on both ends of the box are
It is a portion on which another packaging box stacked on it is placed, and the heights of the upper surfaces thereof from the bottom panel 11 are the same. Further, the height of the flat panel is made lower than the height of the side panels 12, 12, and the flat panels 19, 1 on both end sides are also provided.
When the holding flaps 15, 15 are provided so as to face each other from the upper surface of 9, the shift of the upper packaging box placed thereon can be prevented.
In this case, the packaging box on top of the holding flap 15,
In order to insert smoothly between 15 and the upper parts of the side panels 12, 12, the inner surface facing distance of the holding flaps 15, 15 on both end sides is set to be equal to or more than the lower outer facing distance of the end panels 13, 13. The inner facing gap on the upper side of the side panels 12, 12 on both sides is equal to or larger than the outer facing gap on the lower side of the side panels 12, 12.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 3 shows an example of a blank forming a tray type packaging box according to the present invention. This blank is made, for example, by punching a piece of paperboard such as a corrugated board along a solid line and making a crease at a predetermined portion indicated by a broken line. A bottom panel 11 that constitutes the bottom wall of the box is provided at the center of the blank, and the bottom panel 11 has extension portions 20 and 20 that extend in a flush manner on both left and right sides of the blank panel without interposing fold lines. Have The extension portions 20, 20 of the bottom panel 11 have a trapezoidal shape whose width becomes narrower toward the front.

From the upper and lower sides of the bottom panel 11 in the figure,
So-called side panels 12 and 12 are continuously extended via a broken line indicated by a broken line. Furthermore, this side panel 12,
Inner flaps 14, 14 that are folded inward when the box is assembled are provided on both sides of 12 via folding lines shown by broken lines. The width of the inner flaps 14, 14, that is, the height when assembled as a box body as described later is lower than that of the side panels 12, 12, and the lower amount is so-called chamfered on both sides of the side panel 12. ing.

The inner flaps 14, 14 are slightly longer than the width of the box body, that is, ½ of the length of the end surface of the box body, and the hook-shaped constriction 14a is formed in a portion of ½ of the length of the end surface of the box body. have. The constriction 14a is provided on the upper and lower inner flaps 14, 14 of the blank shown in FIG. 3 so as to face downward. When the blank is folded to assemble a box body, the constriction is formed on the upper and lower sides, respectively, as will be described later. It is formed to face.

On the other hand, the extension parts 20, 2 of the bottom panel 11
End panels 13 and 13 are continuously extended from the front side of 0 through folding lines, and reinforcing flaps 18 and 18 are continuously extended from both sides of the end panels 13 and 13 through folding lines. The protruding width of the reinforcing flaps 18, 18 is the same as the protruding width of the extension portions 20, 20 of the bottom panel 11, or the blank 1
It's about as small as one sheet.

Flat panels 19, 19 are continuously extended from the front sides of the end panels 13, 13 through folding lines, and the flat panels 19, 19 have a width gradually increasing toward the front. It has a shape. In addition, the width of the flat panels 19, 19 is equal to the extension 2 of the bottom panel 11.
It is slightly wider than the width of 0 and 20. A trapezoidal holding flap 1 is provided at the center of the flat panels 19 and 19 along the fold line between the flat panels 19 and 19 and the end panels 13 and 13.
5, 15 are cut out so that there is no fold line between this retaining flap 15, 15 and the end panel 13, 13 so that the retaining flap 15, 15 remains flush on the extension of the end panel 13, 13. Is ready to go.

Inner end panels 16 and 16 are continuously extended from the front end sides of the flat panels 19 and 19 through folding lines. The height of the inner end panels 16 and 16 is equal to that of the end panel 1.
The height is set to be approximately the same as or slightly higher than that of Nos. 3 and 13. Further, the insertion flaps 17, 17 are continuously extended from the inner end panels 16, 16 via a fold line, and the insertion flaps 17, 17 have a trapezoidal shape whose width becomes narrower toward the front. Has become.

1 and 2 show a procedure for assembling the blank of FIG. 3 to assemble a tray type packaging box. First,
The side panels 12, 12 extending vertically in FIG. 3 of the bottom panel 11 are bent at right angles along fold lines, and the side panels 12, 12 are raised to the front side of the paper surface of FIG. Before and after this, as shown in FIG. 1, the inner flaps 14 and 14 extending from both sides of the side panels 12 and 12, respectively.
Is folded inside the box along the fold line, the inner flaps 14, 14 extending from both side panels 12, 12 are overlapped with each other at the end face position of the box, and the constrictions 14a, 14a at their ends are formed. Multiply.

On the other hand, the end panel 1 extending from the left and right sides of the extension portions 20, 20 of the bottom panel 11 in FIG.
3 and 13 are bent at a right angle along the fold line, and the end panels 13 and 13 are raised to the front side of the paper surface of FIG. Further, the flat panels 19 and 19 are bent at a right angle to the inside of the box from the fold line on the front side of the end panels 13 and 13.
The inner end panels 16 and 16 are bent at right angles from the flat panels 14 and 14 along the folding lines toward the lower side of the box body, and the inner end panels 16 and 16 are attached to the inner panels 14 and 14. Further, the insertion flaps 17 and 17 are bent at a right angle to the outside of the box body 11, and the insertion flaps 17 and 17 are bent to the inside of the box body so that the space between the inner flaps 14 and 14 and the extension portions 20 and 20 of the bottom panel 11 is increased. insert. Finally, the end panel 13,
The reinforcing panels 18 and 18 are bent inward from both sides of 13 and the tip sides thereof are strongly pressed against the inner flaps 14 and 14 to be fixed.

In this state, as shown in FIGS. 2 and 4 to 6, the bottom panel 11, the side panels 12 and 12 and the end panels 13 and 13 form a box body having an open upper surface. A flat portion is formed by the flat panels 19 on the end side. In addition, the end of this box is the end panel 1
3, 13, the inner end panels 16, 16, two inner flaps 14, 14 and two stiffening flaps 18, 18 are formed in multiple layers, whereby the flat panels 19, 1 are formed.
The load applied to 9 is supported. Then, the fixed state of this end portion is completely held by the insertion of the insertion flaps 17, 17 and the bulging of the reinforcing flaps 18, 18.

A flat surface is formed by the flat panels 19 on the end surface of the box thus formed.
Retaining flaps 15, 15 extending from the end panels 13, 13 stand outside the central portion. The flat panels 19, 19 are lower than the side panels 12, 12. As shown in FIG. 5, the widths of the flat panels 19 and 19 are wider than the widths of the extension portions 20 and 20 of the bottom panel 11,
The facing outer surface spacing of the end panel 13 is wider on the upper side than on the lower side. More specifically, the inner surface facing distance of the holding flaps 15, 15 extended to the upper side of the end panels 13, 13 is equal to or more than the lower outer facing distance of the end panels 13, 13. Further, in the illustrated example, as shown in FIG. 6, the inner facing intervals on the upper sides of the side panels 12, 12 on both sides are also equal to or more than the outer facing intervals on the lower sides of the side panels 12, 12. As a result, another packaging box of the same shape can be easily placed and stacked on the tray-shaped packaging box, and the packaging box placed on the top of the flat panels 19 and 19 at that time.
Is firmly and stably held by the side panels 12, 12 and the holding flaps 15, 15 so that the upper packaging box is held in place.

In such a tray type packaging box, the flat panels 19 and 19 which are flat portions provided at the ends of the box body.
Are end panels 13, 13, inner end panels 16, 16, two inner flaps 14, 14 and two reinforcing flaps 18,
Since it is multiply supported by 18, and the fixed state of this end portion is fixed by the strut of the reinforcing flaps 18, 18, high load resistance is obtained. Also, the flat panel 1
It is also possible to take a wide flat surface with 9, 19
It is possible to obtain a tray-type packaging box that is easy to stack and does not easily collapse. It should be noted that the distinction between the “side surface” and the “end surface” of the packaging box is for convenience, and therefore the side panel 12
The distinction between the names of the end panel 13 and the end panel 13 is merely for convenience. In the above embodiment, the panel in which the inner flap 14 is extended is referred to as the side panel 12 for convenience.

7 and 8 show another example of the tray type packaging box according to the present invention. In this tray type packaging box, as shown in FIG. 8, the length of the inner flaps 14, 14 of the blank is set sufficiently longer than the width of the box body, that is, half the length of the end face of the box body. Specifically, the illustrated inner flap 14,
The length of 14 is set to be slightly shorter than the width of the box, that is, the length of the end surface of the box. When the blank is bent to assemble the box body, the inner flaps 14, 1
4 are simply overlaid. Even just like this,
Inner flap 1
4 and 14 and the extension parts 20 and 20 of the bottom panel 11, and the reinforcing panels 18 and 18 are bent inward from both sides of the end panels 13 and 13, and the tip sides thereof are strongly attached to the inner flaps 14 and 14. By applying and fixing, the inner flaps 14, 14 are fixed.

[0024]

As described above, according to the present invention, the portion where the packaging boxes are stacked has excellent mechanical strength, and even if the portion is wide, a sufficient strength can be obtained, so that the packaging boxes do not collapse even when stacked. A packaging box can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a procedure of assembling a tray-type packaging box according to the present invention from a blank.

FIG. 2 is a perspective view showing an example of a tray-type packaging box according to the present invention assembled from a blank.

FIG. 3 is a plan view showing an example of a blank of the tray type packaging box according to the present invention.

FIG. 4 is a plan view showing an example of a tray-type packaging box according to the present invention assembled from a blank.

FIG. 5 is an enlarged sectional view taken along the line AA of FIG. 4;

FIG. 6 is a front view showing an example of a tray-type packaging box according to the present invention assembled from a blank.

FIG. 7 is a perspective view showing a procedure for assembling another example of the tray type packaging box according to the present invention from a blank.

FIG. 8 is a plan view showing another example of the blank of the tray type packaging box according to the present invention.

FIG. 9 is a plan view showing a conventional example of a tray-type packaging box blank.

FIG. 10 is a perspective view showing a state in which a tray-type packaging box is assembled from a blank according to the conventional example.

[Explanation of symbols]

 11 Bottom Panel 12 Side Panel 13 End Panel 14 Inner Flap 15 Retaining Flap 16 Inner End Panel 17 Insertion Flap 18 Reinforcing Flap 19 Flat Panel 20 Bottom Panel Extension

Claims (6)

[Claims] 1. A bottom panel (11) constituting the bottom of the box.
From each side of the side panels (12), (12) and the end panels (13), (1
3) are respectively extended and these side panels (12), (12)
A tray-shaped packaging box in which the end panel (13) and the end panel (13) are fixed to each other, the box body being formed from the edges of the side panels (12) and (12) extending from the bottom panel (11). The inner flap (1 that is bent and extended toward the end face of the
4), (14), ... And the end panel (1) that is bent from the leading edge of the bottom panel (11) and extends along the end face of the box body.
3) and (13) and a plane that is bent and extended from the upper side of the end panels (13) and (13) to the inside of the box body and forms a plane substantially parallel to the bottom panel (11) at the end of the box body. The panels (19), (19) and the flat panels (19), (1
9) is extended along the inner surface of the end portion of the box from the front side of 9), and the inner flap (1
4), (14) sandwiching the inner end panel (16), (1
6) and extending from the inner end panels (16), (16), said bottom panel (11) and inner flap (14),
(14) A tray-type packaging box having insertion flaps (17), (17), ... 2. Flat panels (19), (19) on both ends.
The tray-shaped packaging according to claim 1, characterized in that the heights from the bottom panels (11) are the same as each other and that the height is lower than the height of the side panels (12), (12). Box. 3. Flat panels (19), (19) on both sides.
The tray-type packaging box according to claim 1 or 2, wherein holding flaps (15), (15) are provided so as to face each other from the upper surface of the tray. 4. The holding flaps (15), (1) on both end sides.
The tray-type packaging box according to claim 3, wherein the inner surface facing distance of 5) is equal to or more than the lower outer facing distance of the end panels (13) and (13). 5. The side panel (12) on both sides, the inner facing interval on the upper side of the (12) is greater than or equal to the outer facing spacing on the lower side of the side panel (12), (12). Item 5. The tray-type packaging box according to any one of Items 1 to 4. 6. Inner end panels (16), which are folded from both sides of the end panels (13), (13) to the inside of the box.
(16) or an inner flap (1
4. The tray-type packaging box according to any one of claims 1 to 5, further comprising reinforcing flaps (18) and (18) whose front edges are pressed against 4), (14).