JP7096691B2 - Bottom one-touch box - Google Patents

Description

The present invention relates to a box having a bottom assembly structure that can be assembled from a folded state with one touch.

In the bottom one-touch box shown upside down in FIG. 7, each pair of side plates 61 and 62 forming the peripheral wall 51 are joined via a joint 63, and the bottom wall is connected from each side plate 61 and 62 via a ridge ruled line 70, respectively. Each pair of bottom plates 71 and 72 forming 52 is extended, and on one side of the pair of bottom plates 71, an oblique line 73 toward the diagonal of the bottom wall 52 and a bottom joint piece 74 having this as a hinge are provided. A lock portion 75 is provided at the center of the tip of the pair of bottom plates 71.

In manufacturing this bottom one-touch box, each pair of side plates 61 and 62 is folded, the pair of bottom plates 71 is folded back along the diagonal folding line 73, and the bottom splicing piece 74 of the bottom plate 71 is superposed on the adjacent bottom plates 72. When pasted, it becomes a flat folded state.

Then, when the pair of side plates 61 and 62 are laid out so that the peripheral walls 51 form a square cylinder when storing the articles, the bending along the diagonal folding line 73 of the bottom plate 71 is extended, and the lock portion 75 of the bottom plate 71 is opened. It meshes with each other, and one side edge 71a of the pair of bottom plates 71 is close to the inner surface of the ridge portion of the other pair of bottom plates 72 and the side plates 62 adjacent to each other, and is kept in the assembled state.

By the way, in the bottom one-touch box as described above, even if the joint misalignment of the joint 63 at the time of manufacturing is within the allowable range, as shown in FIG. 8, the peripheral wall 51 becomes a regular square tube when the box is opened. If the three-dimensional structure is forcibly attempted, a tear t may occur from the corner portion at the ridge portion of the pair of side plates 62 and the bottom plate 72 located at diagonal positions.

As a countermeasure, for example, referring to the description of the following Patent Document 1 shown in FIGS. 9 (9A) and 9 (9B), two ridge ruled lines 70 at the boundary between the side plates 61 and 62 and the bottom plates 71 and 72 are parallel to each other as a whole. In addition to engraving, it is conceivable to adopt a configuration in which two diagonal ruled lines 73 and ridge ruled lines 64 at the boundaries of the side plates 61 and 62 are also engraved in parallel to absorb distortion due to joining misalignment.

Jitsufuku No. 6-50337 Gazette

However, as shown in Patent Document 1, when two ridge ruled lines 70 are engraved in parallel as a whole, only along one of the ridge ruled lines 70 at the time of bending and sticking processing at the time of manufacturing. There is a risk that one-sided bending will occur, the defect rate will increase during processing with one-touch gluer, and productivity will decrease.

Therefore, the present invention is to provide a bottom one-touch box that can prevent tearing at the time of boxing due to processing defects at the time of manufacturing or misalignment at the time of manufacturing and can improve productivity.

In order to solve the above problems, in the present invention, each pair of side plates forming a peripheral wall is connected in series, and each pair of bottom plates forming a bottom wall is extended from each side plate via a ridge ruled line. The side plates of the are blank and connected in a band shape, and the joints are connected to the side plates at one end.
A bottom joint having a hinge on one side of the pair of bottom plates is folded along the diagonal fold line, overlapped with the other pair of bottom plates, and attached, and the joint is attached to the other side plate . It becomes a flat folded state,
Along with the boxing in which the peripheral wall is three-dimensionalized into a square cylinder, the bottom plate is bent along the diagonal fold line, and one side edge of the pair of bottom plates is adjacent to the other bottom plate and the ridge of the side plate. In the bottom one-touch box that is close to the inner surface and is kept in the assembled state
Auxiliary ruled lines extending in parallel with the ridged ruled lines are partially engraved on the ridges of the other pair of bottom plates with the side plates only in the portion where the side edge thereof is close to the base of the pair of bottom plates. The auxiliary ruled line engraved on the bottom plate connected to the side plate at the other end has a length equal to or larger than the width of the joint.
When the joint is attached to the side plate at the other end to form a flat folded state, the bottom plate is bent from the side plate along the ridge ruled line and the auxiliary ruled line so that the bottom plate has a rounded shape, and the ridges of the side plate and the bottom plate are bent. It has a bag shape, and the joint enters between the side plate and the bottom plate without colliding with the bottom plate.
When the side edge of the pair of bottom plates is pressed against the inner surface of the ridge of the other pair of bottom plates and the side plates at the time of boxing, the base of the other pair of bottom plates is along the auxiliary ruled line so as to release the pressing force. It was supposed to be bent.

Further, each pair of side plates forming the peripheral wall is continuously provided, and each pair of bottom plates forming the bottom wall is extended from each side plate via a ridge ruled line, and the pair of side plates are connected in a band shape with a blank. A joint is installed on the side plate at one end,
A bottom joint having a hinged diagonal line on one side of the pair of bottom plates is attached to the other pair of bottom plates in a stretched state without folding back along the diagonal line, and the joint is attached to the side plate on the other end. When attached to, it becomes a flat folded state,
Along with the boxing in which the peripheral wall is three-dimensionalized so as to form a square cylinder, the bottom joints of the pair of bottom plates are bent along the diagonal fold line, and one side edge of the pair of bottom plates is adjacent to the other pair. In the bottom one-touch box that is kept in the assembled state near the inner surface of the ridge of the bottom plate and the side plate.
Auxiliary ruled lines extending in parallel with the ridged ruled lines are partially engraved on the ridges of the other pair of bottom plates with the side plates only in the portion where the side edge thereof is close to the base of the pair of bottom plates. The auxiliary ruled line engraved on the bottom plate connected to the side plate at the other end has a length equal to or larger than the width of the joint.
When the joint is attached to the side plate at the other end to form a flat folded state, the bottom plate is bent from the side plate along the ridge ruled line and the auxiliary ruled line so that the bottom plate has a rounded shape, and the ridges of the side plate and the bottom plate are bent. It has a bag shape, and the joint enters between the side plate and the bottom plate without colliding with the bottom plate.
When the side edge of the pair of bottom plates is pressed against the inner surface of the ridge of the other pair of bottom plates and the side plates at the time of boxing, the base of the other pair of bottom plates is along the auxiliary ruled line so as to release the pressing force. It was supposed to be bent .

In the bottom one-touch box according to the present invention, the auxiliary ruled lines are only partially engraved on the side plates and the ridges of the bottom plates, so that when the bottom plate is bent from the side plates, it is accurately folded along the ridges. It can be bent and the bottom splice can be attached to a predetermined position on the bottom plate, preventing the occurrence of box-making defects.

Then, even if one side edge of the pair of bottom plates near the base is pressed against the other pair of bottom plates and the inner surface of the ridge of the side plate, the base of the other pair of bottom plates bends along the auxiliary ruled line. Since the pressing force is released, the ridges of the other pair of bottom plates and side plates are prevented from being torn, and the shape is maintained in the assembled state.

In addition, at the time of manufacture, the bottom plate connected to the side plate to which the joint is attached bends along the ridge ruled line and the auxiliary ruled line, and the ridges of the side plate and the bottom plate form a bag shape, so that the joint between the side plate and the bottom plate is formed. Insertion failure is less likely to occur, processing defects during manufacturing are prevented, and productivity is improved.

Back view showing a blank of the bottom one-touch box according to the embodiment of the present invention. Enlarged back view of the main part of the blank as above It is an enlarged view showing the relationship between the form of the same ruled line and the push ruled blade. ) Schematic diagram showing the integrated form so that the auxiliary ruled lines project on both sides of the ridged ruled line in the width direction. The same perspective view showing the folding process during manufacturing as above. Same as above Plan view showing the folded state (6A) A perspective view showing the entire bottom portion of the bottom assembly structure inverted upside down in the same assembled state, and (6B) an enlarged perspective view showing a corner portion on which an auxiliary ruled line acts. A perspective view showing the bottom of a conventional general bottom one-touch box turned upside down. Bottom view showing the boxing process against the joint misalignment of the bottom one-touch box as above. A view showing one of (9A) two divided blanks of the bottom one-touch box described in Patent Document 1, and (9B) an enlarged perspective view showing a corner portion in an assembled state.

Hereinafter, embodiments of the bottom one-touch box according to the present invention will be described with reference to the accompanying drawings.

This bottom one-touch box is assembled from a corrugated cardboard blank as shown in FIG. 1, and this blank is from a portion forming a peripheral wall 1, a portion forming a bottom wall 2, and a portion forming a top wall 3. It is configured.

In the portion forming the peripheral wall 1, each pair of side plates 11 and 12 are alternately connected so as to form a band, and a joint 13 is continuously connected to the side plates 11 at one end thereof. In the portion forming the bottom wall 2, bottom plates 21 and 22 are connected to the lower ends of each pair of side plates 11 and 12 via a ridge ruled line 20, respectively. In the portion forming the top wall 3, a lid plate 31 is continuously provided at the upper end of one side plate 11, and a lid receiving piece 32 is continuously provided at the upper end of the pair of side plates 12.

On one side of the pair of bottom plates 21, an oblique folding line 23 toward the diagonal of the bottom wall 2 in the assembled state and a bottom joint piece 24 using this as a hinge are provided, and a concave shape is provided at the center of the tip of the pair of bottom plates 21. A lock portion 25 cut into the wall is provided. The diagonal fold line 23 is a reverse ruled line pressed from the surface so as to form a valley fold in which the surface side of the corrugated cardboard is recessed.

The side edge 21a on the side opposite to the bottom joint piece 24 of the pair of bottom plates 21 holds the peripheral wall 1 in the shape of a square cylinder at the time of assembly. It is inclined inward at an angle close to 90 ° with respect to the ridge ruled line 20 of the boundary.

Then, in the assembled state, it corresponds to the base of the pair of bottom plates 21 and extends parallel to the ridge ruled line 20 only at the portion where the side end edges 21a are close to each other and at the ridge of the other pair of bottom plates 22 with the side plates 12. The auxiliary ruled line 26 is partially engraved (see FIG. 6).

The auxiliary ruled line 26 is a normal ruled line pressed from the back surface so as to form a mountain fold in which the front surface side of the corrugated cardboard protrudes. Further, as shown in FIG. 2, the length L of the auxiliary ruled line 26 is equal to or larger than the width W of the joint 13 and is specifically about 5 mm longer.

As shown in FIG. 3 (3A), the ridge ruled line 20 and the auxiliary ruled line 26 are basically in the form in which the auxiliary ruled line 26 is integrated on one side of the ridge ruled line 20, but as shown in FIG. 3 (3B). It may be separated from each other and parallel to each other. Further, as shown in FIG. 3 (3C), the auxiliary ruled line 26 may be integrated so as to project on both sides of the ridge ruled line 20 in the width direction.

The form of the ridge ruled line 20 and the auxiliary ruled line 26 is appropriately selected according to the type of paper used as the blank material (corrugated cardboard such as G flute, E flute, B flute, single-layer paperboard, etc.), and the ruled ruled blade. The intervals and widths of 20A and 26A may be changed for adjustment.

The push ruled blade 26A for engraving the auxiliary ruled line 26 in this way only needs to be added to the push ruled blade 20A for engraving the ridge ruled line 20 with respect to the conventional punching die for forming a blank, for blank manufacturing. The processing cost of the is not significantly increased.

When manufacturing a bottom one-touch box from a blank as described above, a one-touch gluer is used, and as shown in FIG. 4, each pair of side plates 11 and 12 is folded, and the bottom plates 21 and 22 are formed into a ridge ruled line 20. The bottom joint pieces 24 of the pair of bottom plates 21 are folded inward along the diagonal fold line 23, and the bottom joint pieces 24 are overlapped and attached to the adjacent bottom plates 22.

At this time, since the auxiliary ruled line 26 is only partially engraved on the ridges of the side plates 11 and 12 and the bottom plates 21 and 22, when the bottom plates 21 and 22 are bent from the side plates 11 and 12, the auxiliary ruled line 20 is along the ridge line 20. It bends accurately without breaking, and the bottom joint piece 24 can be attached to a predetermined position on the bottom plate 22 to prevent the occurrence of box-making defects.

Then, the bottom plate 22 is bent from the side plate 12 along the ridge ruled line 20 and the auxiliary ruled line 26 so as to have a rounded shape, and the ridges of the side plate 12 and the bottom plate 22 form a bag shape, so that the joint 13 collides with the bottom plate 22. It easily enters between the side plate 12 and the bottom plate 22.

Further, since the length L of the auxiliary ruled line 26 is longer than the width W of the joint 13, the gap between the side plate 12 and the bottom plate 22 is surely secured over the entire width of the joint 13, and the joint 13 is the side plate. It is securely inserted between the 12 and the bottom plate 22. Therefore, the one-touch gluer can be continuously assembled without causing any trouble, and the productivity is improved.

Then, as shown in FIG. 5, when each pair of side plates 11 and 12 are completely folded and the joint 13 is attached to the inner surface of the overlapping end side plates 12, it is flattened like a general bottom one-touch box. Since it is in a folded state, it can be stored by efficiently using the space.

After that, when assembling, as shown in FIG. 6A, which is turned upside down, when the peripheral wall 1 is opened into a square cylinder, the pair of bottom plates 21 are bent along the diagonal folding line 23, and the bottom plate 21 is bent. The lock portions 25 are engaged with each other, and one side end edge 21a of the pair of bottom plates 21 is close to the inner surface of the ridge portion of the other pair of bottom plates 22 and the side plates 12 adjacent to each other, and the shape is maintained in the assembled state.

When the box is opened in this way, even though the joint of the joint 13 is misaligned, if a force is applied so that the peripheral wall 1 forms a regular square cylinder to make it three-dimensional, the base of the pair of bottom plates 21 is formed. On the side, one side edge 21a may be strongly pressed against the inner surface of the ridge of the other pair of bottom plate 22 and side plate 12.

Even in such a state, in the bottom one-touch box, as shown in FIG. 6 (6B), the base of the bottom plate 22 is bent along the auxiliary ruled line 26 and the pressing force is released, so that the bottom plate 22 and the side plate are released. The tearing from the corner portion of the ridge portion of 12 is prevented.

Further, since the auxiliary ruled line 26 is located on the bottom surface, even if the base of the bottom plate 22 is bent along the auxiliary ruled line 26, it is not noticeable in appearance.

In the above embodiment, in the blank, the joint 13 is connected to the side plate 11 at one end, but the joint 13 may be connected to the side plate 12 at the other end, and the bottom plate may be connected. The positional relationship between the side edge 21a and the auxiliary ruled line 26 in 21 and 22 may be reversed.

Further, in the folded state, the bottom splicing piece 24 of the pair of bottom plates 21 is folded back along the diagonal folding line 23, and the bending along the diagonal folding line 23 of the pair of bottom plates 21 is extended along with the boxing to assemble. In the folded state, the bottom joint pieces 24 of the pair of bottom plates 21 extend along the diagonal folding line 23 without being folded back, and the bottom joints of the pair of bottom plates 21 are joined together with the boxing. The piece 24 may be bent along the diagonal folding line 23 to be in an assembled state.

In addition, in the above embodiment, as the top surface shape, a plug-in sealing type is exemplified, but as the top surface shape, a flap extending from the upper end of each pair of side plates is attached and sealed, or a separate lid. It may be covered with, etc., and is not particularly limited.

1 Circumferential wall 2 Bottom wall 3 Top wall 11, 12 Side plate 13 Joint 20 Ridge ruled line 20A Pushed ruled blade 21, 22 Bottom plate 21a Side edge 23 Oblique folding line 24 Bottom joint piece 25 Lock part 26 Auxiliary ruled line 26A Pushed ruled blade 31 Lid plate 32 Cover piece

Claims (2)

Each pair of side plates (11,12) forming the peripheral wall (1) are connected in series, and each pair of bottom plates forming the bottom wall (2) from each side plate (11,12) via the ridge ruled line (20). (21,22) is extended, each pair of side plates (11,12) is connected in a band shape with a blank, and a joint (13) is continuously provided on the side plate (11) at one end thereof.
The bottom joint piece (24) having the diagonal fold line (23) on one side of the pair of bottom plates (21) as a hinge is folded back along the diagonal fold line (23), and is superposed on the other pair of bottom plates (22) and attached. When the joint (13) is attached to the side plate (12) at the other end, it becomes a flat folded state.
Along with the boxing in which the peripheral wall (1) is three-dimensionalized so as to form a square cylinder, the bottom plate (21) is bent along the diagonal fold line (23), and one side edge of the pair of bottom plates (21) is extended . In the bottom one-touch box in which (21a) is kept in the assembled state in close proximity to the inner surface of the ridge of the other pair of bottom plates (22) and side plates (12) adjacent to each other.
Corresponding to the base of the pair of bottom plates (21), only in the portion where the side edge (21a) is close to the base, and on the ridge of the other pair of bottom plates (22) with the side plate (12), a ridge ruled line ( The auxiliary ruled line (26) extending parallel to 20) is partially engraved , and the auxiliary ruled line (26) engraved on the bottom plate (22) connected to the side plate (12) at the other end is the joint (13). ) Has a length (L) greater than or equal to the width (W),
When the joint (13) is attached to the side plate (12) at the other end to form a flat folded state, the side plate (12) to the bottom plate (12) along the ridge ruled line (20) and the auxiliary ruled line (26). 22) is bent so as to have a rounded shape, the ridges of the side plate (12) and the bottom plate (22) form a bag shape, and the joint (13) does not collide with the bottom plate (22). ) And the bottom plate (22),
When the side edge (21a) of the pair of bottom plates (21) is pressed against the inner surface of the ridge of the other pair of bottom plates (22) and the side plates (12) at the time of boxing, the pressing force is released. A bottom one-touch box characterized in that the base of the other pair of bottom plates (22) bends along the auxiliary ruled line (26). Each pair of side plates (11,12) forming the peripheral wall (1) are connected in series, and each pair of bottom plates forming the bottom wall (2) from each side plate (11,12) via the ridge ruled line (20). (21,22) is extended, each pair of side plates (11,12) is connected in a band shape with a blank, and a joint (13) is continuously provided on the side plate (11) at one end thereof.
The other pair of bottom plates (22) in a state in which the bottom splicing piece (24) hinged by the diagonal fold line (23) on one side of the pair of bottom plates (21) is extended along the diagonal fold line (23) without folding back . When the hinge (13) is attached to the side plate (12) at the other end, it becomes a flat folded state.
Along with the boxing in which the peripheral wall (1) is three-dimensionalized so as to form a square cylinder , the bottom joint pieces (24) of the pair of bottom plates (21) are bent along the diagonal fold line (23), and the pair of bottom plates are bent. In a bottom one-touch box in which one side edge (21a) of (21) is close to the inner surface of the ridge of the other pair of bottom plates (22) and side plates (12) adjacent to each other and is kept in the assembled state.
Corresponding to the base of the pair of bottom plates (21), only in the portion where the side edge (21a) is close to the base, and on the ridge of the other pair of bottom plates (22) with the side plate (12), a ridge ruled line ( The auxiliary ruled line (26) extending parallel to 20) is partially engraved , and the auxiliary ruled line (26) engraved on the bottom plate (22) connected to the side plate (12) at the other end is the joint (13). ) Has a length (L) greater than or equal to the width (W),
When the joint (13) is attached to the side plate (12) at the other end to form a flat folded state, the side plate (12) to the bottom plate (12) along the ridge ruled line (20) and the auxiliary ruled line (26). 22) is bent so as to have a rounded shape, the ridges of the side plate (12) and the bottom plate (22) form a bag shape, and the joint (13) does not collide with the bottom plate (22). ) And the bottom plate (22),
When the side edge (21a) of the pair of bottom plates (21) is pressed against the inner surface of the ridge of the other pair of bottom plates (22) and the side plates (12) at the time of boxing, the pressing force is released. A bottom one-touch box characterized in that the base of the other pair of bottom plates (22) bends along the auxiliary ruled line (26).

Images