JPS597229Y2 - Boat-shaped assembled paper box - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an assembly type paper box, and particularly to an assembly paper box suitable as a packaging container for fish such as fresh salmon.

Generally, as shown in Figure 1, an assembled paper box is made by assuming a rectangle 1 in the center of a piece of cardboard that will serve as the bottom, and rectangular fold-up pieces 2 that touch the periphery to form the side walls.
3, 4.5 are provided, and folded pieces 6, 7, 8.9 are provided respectively in contact with the outside thereof, and folded pieces 10, 11 called ears are provided at appropriate locations on both ends of the folded-up pieces or folded-back pieces. , 12 and 13 are arranged in series, their outer peripheries are cut out, and the outer parts are successively folded inward using the boundary lines of each side as creases to assemble the box.

In FIG. 1, the fold line is shown by a broken line.

The above broken lines are all folds that become concave upward.

FIG. 2 is a sectional view taken along line A-A to show the assembly method.

Fold up the folding pieces 2, 3.5 perpendicularly to the bottom 1.

The folding pieces 10 and 13 connected to the folding pieces 3 and 5 are respectively bent inward at right angles and brought into contact with the folding piece 2.

Fold back the folded piece 6 toward the front as shown in the figure, hold the folded pieces 10 and 13, and fold the folded pieces 7 and 9 inward by 180 degrees.

Assembled paper boxes shaped as described above are widely used because they are convenient, such as being able to easily assemble a three-dimensional box from a single piece of cardboard and stacking them in an unfolded state for transportation and storage. There is.

However, the conventional assembled paper box having the above-mentioned structure has the inconvenience that, when a product is placed therein, an appropriate amount of stuffing must be placed between the product and the box.

In particular, when storing products such as freshly rolled salmon whose shape and size are not strictly constant, it is time-consuming to change the amount of stuffing depending on the size of the product, and if the stuffing is omitted. It doesn't look good because you can see the back side of the paper at the bottom of the paper box.

In addition, if the filling is not appropriate, there is a risk of damaging the product or causing problems such as the product becoming uneven in the box, making it inconvenient to handle.

This invention was created in view of the above circumstances, and the bottom surface flexibly adapts to the shape and size of the objects to be stored inside, eliminating the risk of the stored objects being biased or damaged even without padding. To provide an assembled paper box that has a good appearance without exposing the back side of the paper at the bottom, and is easy to assemble and unfold.

In order to achieve the above object, the present invention has a guide groove cut into the outer edge of the folded piece provided on the outside of a pair of short sides of the rectangle that is to be the bottom, so that the folded piece can be connected to the folded piece when assembled. A guiding gap is formed between the base and the bottom surface, and
The width of the folded piece provided on the outside of a pair of long sides of the rectangle that is to become the bottom part is wider than the width of the folded piece that touches this folded piece, and a folded line in the longitudinal direction is placed near the center of the folded piece. In addition, guide protrusions are provided at both ends of the folded pieces, and when this assembled paper box is assembled, by engaging the protrusions with the guide gaps, the long side folded pieces It is characterized by a flexible boat-shaped bottom inside the assembled paper box.

Next, an embodiment of the present invention will be described with reference to FIGS. 3 to 7.

The rectangular shape 1 serving as the bottom and the folding pieces 2, 3, 4.5 forming the sides are structural members similar to those in the conventional assembled paper box described with reference to FIG.

The folding pieces 6' and 8' are structural members corresponding to the folding pieces 6 and 8 in the conventional assembled paper box explained with reference to FIG. 1, but in this case, among the four folding pieces, Shallow W-shaped groove-shaped cuts 14 and 15 are formed on the outer edges of the two folded pieces 6' and 8' provided on the outer sides of the short sides 1a and 1a' of the bottom part 1.

Thereby, when the assembled paper box is assembled as described below with reference to FIG. 5, a guiding gap is formed between the folded pieces 6', 8' and the bottom part 1.

Folding pieces 1 0', 1 1', 1 2', 13
' is the tip of each as shown (indicated by phantom lines)
Cut off diagonally.

This is because, when the paper box is assembled, these folds do not cover the above-mentioned guiding gap.

The folding pieces 7' and 9' are members corresponding to the folding pieces 7 and 9 of the conventional assembled paper box explained with reference to FIG. 1, but they are particularly different from the folding pieces 9 in FIG. is as follows.

(a) Width dimension W of folded pieces 7 and 9 of conventional type (Fig. 1)
is formed to have the same size as the width dimension d of the folded-up pieces 3 and 50.

As explained with reference to FIG.
When 9 is folded inward by 180 degrees, the folding pieces 3 and 5 are overlapped with each other to form a vertical inner wall.

In the present invention, as shown in Fig. 3, the folded pieces 7',
The width dimension W of 9' is made larger than the width dimension d of the folded-up pieces 3 and 5.

(b) A longitudinal fold line 16, 17 is provided near the center of the folded pieces 7', 9'.

In this figure, the fold line indicated by a broken line is concavely folded toward the top of the page, and the fold line indicated by a chain line 16.1
7 is something that is folded into a convex shape above the paper surface (
(details later).

(c) Guide protrusions 18, 19, 20, 21 are integrally provided at both ends of the folded pieces 7', 9', respectively.

These protrusions are intended to engage with the notches 14 or 15, as will be described later with reference to FIGS. 6 and 7.

The protrusion height h is approximately the same as the thickness of the cardboard from which the assembled paper box is made, and the protrusion is provided outside the fold lines 16 and 17.

Cut out the cardboard as shown in FIG. 3, emboss the fold lines, and fold up the fold-up pieces 2, 3, 4.5 vertically as shown in FIG.

(The fold-up piece 4 is not shown).

Next, the folded piece 6' is folded inward by 180 degrees as shown in FIG. 5, and the folded pieces 10' and 13' are sandwiched therebetween.

As a result, the fold-up pieces 2, 3, and 5 engage with each other to maintain the assembled posture.

The notch 14 formed on the outermost edge of the folded piece 6' faces the bottom 1 and forms a guiding gap therebetween.

Although not shown, the folding piece 8' facing the folding piece 6' is also folded back in the same manner.

Then, as shown in FIG. 6, the folded piece 9' is folded back inward and placed obliquely into the box in the form of a flap.

The guide protrusion 21 is crossed over the notch 14 and engaged in a slidable manner.

The folded piece 9' has a fold line 1 that is convex upward.
7 is embossed, this fold line 17 forms a fold that is concave upward as the folded piece 9' is folded back (arrow A).

Fold the two folded pieces 9' and 7' as above,
The guide protrusions 18.21 and the guide protrusions 19.20 and 19.20 at both ends thereof are slidably engaged in the notches 14 and 15, respectively.

The assembled paper box according to the present invention can be easily assembled as described above, and it can also be easily disassembled and unfolded into a flat shape.

Fig. 7 is an explanatory diagram schematically depicting a cross section of the assembly box assembled as described above in a vertical plane, and for ease of reading, hatching indicating the cross section is only attached to the guide protrusions 19 and 20. There is.

The position of the notch 15 in the folded piece 8' (not shown) is shown by a phantom line.

The folded pieces 7' and 9', which are folded back diagonally inward like flaps as described above, have the guiding protrusions 19 and 20 engaged with the notches 15, and when no special force is applied from others, the folded pieces 7' and 9' are folded back diagonally inward like flaps. Due to the elastic restoring force, it tends to expand in the direction of opening the bending angles θ, θ at the crease lines 16 and 17, as shown by the solid line in the figure.

The above-mentioned extension is limited by the guide projections 19, 20 coming into contact with the notches 15, and the folded pieces 7', 9' form a boat bottom shape as shown by the solid lines.

When a relatively small product is placed in the boat bottom-shaped recess B defined by the folded pieces 7' and 9', the folded pieces 7' and 9' maintain an almost solid line posture due to the elastic restoring force of the cardboard. while elastically supporting the product.

When a relatively large product is placed in the above-mentioned recess B, the folding pieces 7' and 9' slide the guiding protrusions 19 and 20 onto the edges of both ends of the W-shaped notch 15, as indicated by the chain lines. It is stretched out in this position, and in this position the product is supported by the elasticity of the cardboard.

In this way, the folded pieces 7' and 9' are shaped according to the shape of the product.
It expands and narrows according to the dimensions, and elastically supports the product when it is stored, so there is no need to insert stuffing between the product and the assembled paper box to prevent the product inside from becoming uneven or loose. There is no risk of it getting damaged.

FIG. 8 shows the appearance of the boat-bottom assembled paper box 22 constructed as described above.

As can be easily understood from the shape shown in this figure and the above-mentioned function, the boat-bottom assembled paper box according to the present invention is suitable for storing products with slightly irregular shapes and dimensions, and is particularly suitable for storing fresh salmon. suitable for.

When this assembled paper box 22 is covered with a matching lid 23, it is treated as cargo.
It is convenient to transport, and when the lid 23 is removed and displayed,
The boat bottom-shaped part of the cardboard with the front side facing up holds the new salmon, so it looks good.

Due to the functions described in detail above, the bottom of the boat-bottom assembly paper box according to the present invention flexibly adapts to the shape and dimensions of the products stored inside and elastically supports the stored items, so there is no need for padding. There is no risk of the stored items being lopsided or damaged, the boat-shaped bottom is covered with the front side of paper, which gives it a good appearance, and it is easy to assemble and unfold, which has excellent practical effects. .

[Brief explanation of the drawing]

Figure 1 is an exploded view of a commonly used assembled paper box.
Figure 2 is a sectional view for explaining the assembly method.
FIG. 3 is a developed view of a boat bottom-shaped assembled paper box according to an embodiment of the present invention, FIGS. 4 to 6 are perspective views showing the assembly method, and FIG. 7 is a sectional view of the assembled paper box.
FIG. 8 is a perspective view of the assembled state. 1... bottom, 2, 3, 4.5... fold-up piece, 6.6', 7.7', 8.8', 9.9'...
...Folded piece, 10.10', 11. 11',
12.12', 13.13'...Folding piece,
14.15...Guidance notch, 16.17
・・・・・・Fold line, 18, 19, 20.21・
...Protrusion for guidance, 23...Lid.

Claims (1)

[Scope of utility model registration request] Assuming a rectangular part that will become the bottom of the paper box in the center of a piece of cardboard, provide rectangular folded pieces that will form the side walls of the paper box adjacent to each of the four sides of the rectangular part,
Furthermore, rectangular folded pieces are provided adjacent to each other on the outside, and appropriate folded pieces are connected to both ends of the above-mentioned folded-up pieces or folded-back pieces, and the outer portions are folded inwards along the boundaries of the above-mentioned pieces. In an assembled paper box that is folded into
A guiding notch is formed on the outer edge of each folded piece provided on the outside of a pair of short sides of the rectangular shape that is to become the bottom, so that a guiding notch is formed between the folded piece and the bottom surface in the assembled state. The width of the folded piece provided on the outside of the pair of long sides of the rectangle that constitutes the gap and that should serve as the bottom is made wider than the width of the folded piece that is in contact with this folded piece. By providing a longitudinal fold line near the center and providing guide protrusions at both ends of the folded piece, the protrusions engage the guide gaps when the assembled paper box is assembled. A boat bottom shaped assembled paper box characterized in that a flexible boat bottom shaped bottom surface is formed inside the assembled paper box by the folded pieces on the long sides.