JPH0735324U - Box body with elastic repellent closure - Google Patents

Abstract

(57) [Abstract] [Purpose] When the opening and closing of the bullet-repellent opening was repeated, the full restoration period at the bullet-repelling opening and the restoring force of each flap at the bullet-repelling opening began to decline Provided is a box body having an elastic repellency closing portion, which has a longer closing period of an opening in the subsequent elastic repellency closing portion as compared with a conventional box body. [Structure] Fold the second flap 22 and the fourth flap 24 toward the inside of the box 1 to the top surface position of the box 1,
An opening 27 is formed at the top surface position. First flap 21
The third flap 23 and the third flap 23 are folded on the second and fourth flaps 22 and 24 with their leading edges 21A and 23A slightly overlapped. The tongue portions 26 formed on both sides of the tip end portions of the first and third flaps 21 and 23 are folded from the opening portion 27 to the lower surfaces of the second and fourth flap portions 22 and 24 to form the opening portion 2
An elastic repellent closing portion 20 for closing 7 is formed. First and third
Folding curves 15 and 17 are straight lines, and second and fourth folding curves 1
Curves 6 and 18 are convex upwards.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a box body made of a flexible thin plate material such as a cardboard or a thin plate made of synthetic resin, which is used for a disposable waste container, etc. Is.

[0002]

[Prior art]

 A conventional box a shown in FIG. 4 is a known one in Japanese Utility Model Publication No. 51-18908, which is a disposable waste container made of cardboard and having a quadrangular cross section, and has first side wall pieces b facing each other. The side wall portion x is formed by the second side wall piece c and the third side wall piece and the second side wall piece c and the fourth side wall piece which are opposed to each other, and is connected to the upper end of the first side wall piece b via the linear first folding curve d. The 1st flap e provided, the 2nd flap g connected to the upper end of the 2nd side wall piece c through the linear 2nd folding curve f, and the 3rd folding curve of the straight line to the upper end of the 3rd side wall piece The third flap i, which is continuously connected via h, and the fourth flap k, which is continuously connected to the upper end of the fourth side wall piece through the straight fourth fold curve j, are formed on the top of the box a with a resilient closure. Part y is formed.

In the box a, the second and fourth flaps g and k having semicircular cutouts are folded toward the inside of the box a to the top surface position of the box a, A circular opening m is formed between the tip edges o and p of the second and fourth flaps g and k at the position, and the first flap e and the third flap i are abutted at their tip edges q and r. The tongue parts n folded over the second and fourth flaps g and k and formed on both sides of the tip end of the first and third flaps e and i extend from the opening m to the second and fourth flaps g and k. An elastic-repellent closing part y is formed which is folded into the lower surface to close the opening m.

In the box a described above, when the first and third flaps e, i are pushed down into the box a by a hand holding dust and the like, the first and third flaps e, i are moved together with the second and third flaps e, i. The fourth flaps g, k are also pushed down into the box a, the elastic repelling opening part y is opened, and when dust and the like are stored inside the box a and the hand is pulled up, the first, second, The third and fourth flaps e, g, i, k interact with each other and lift up, and the elastic repelling closing part y automatically restores.

However, since the so-called waist of the first, second, third and fourth flaps e, g, i, k is weak, the opening a of the repelling closing part y and the repelling closing part are repeated in the box a. If this is done, there is a problem that the restoring force of the first, second, third and fourth flaps e, g, i, k declines quickly, and the period for the elastic repellent opening portion Y to completely restore is short. .

In addition, in the box a, the reduction of the restoring force at the first, second, third and fourth flaps e, g, i, k begins, and the first and third flaps e, i There is also a problem in that the opening m of the elastic repellent closing part y is imperfectly closed immediately after the start of drooping, impairing the appearance.

[0007]

[Problems to be solved by the device]

 In view of the above-mentioned problems of the conventional technique, in the present invention, even when the opening and closing of the elastic repellent opening portion is repeated, the period during which the elastic repellent opening portion is completely restored is shown in FIG. It is an object to provide a box body having a resilient and repellant closing portion, which is longer than a.

Further, according to the present invention, the closing period of the opening in the elastic-repellent closing portion is longer than that of the conventional box a after the restoring force of each flap of the elastic-repelling closing portion starts to decrease, and thus the conventional Another object is to provide a box body having an elastic repellent closing portion, which is less likely to be damaged in appearance than the box body a.

[0009]

[Means for Solving the Problems]

 As means for solving the above problems, in the present invention, in a box body made of a flexible thin plate and having a rectangular cross section, first and third side wall pieces facing each other and second and third side wall pieces facing each other. The side wall portion of the box body is formed by the four side wall pieces, and the second flap connected to the upper end of the second side wall piece via the second folding curve and the fourth fold at the upper end of the fourth side wall piece. The fourth flap, which is connected via a curved line, is folded toward the inside of the box body to the top surface position of the box body, and between the leading edge edges of the second and fourth flaps at the top surface position. An opening is formed in the first side wall piece, and the first flap is connected to the upper end of the first side wall piece through a first folding curve; and the first flap is connected to the upper end of the third side wall piece through a third folding curve. The third flap and the third flap are slightly overlapped at their leading edges so that they are folded and folded onto the second and fourth flaps. The tongue portions formed on both sides of the tip portions of the first and third flaps are folded into the lower surfaces of the second and fourth flaps from the opening portions to close the opening portions. Is formed, and the first and third folding curves are straight lines, and the second and fourth folding curves are upwardly convex curves.

[0010]

[Action]

 In the present invention configured as described above, as shown in FIG. 1, the first flap 21 and the third flap 23 have the second and fourth flaps, as in the conventional box a shown in FIG. The tongue portions 26 formed on both sides of the front end portions of the first and third flaps 21 and 23 are folded over the flaps 22 and 24 and extend from the opening 27 to the lower surfaces of the second and fourth flaps 22 and 24. Since the elastic repellent closing portion 20 that is folded in and closes the opening portion 27 is formed, when the first and third flaps 21 and 23 are pushed down into the box body 1, the second side wall piece 12 has an upper end. Both the flaps 22, 24 are also connected to the second flap 22 that is connected through the second folding curve 16 and the fourth flap 24 that is connected to the upper end of the fourth side wall piece 14 through the fourth folding curve 18. The force that pushes down into the box 1 acts.

By the way, in the conventional box body a shown in FIG. 4, the second flap g continuous with the upper end of the second side wall piece c via the second folding curve f 1 and the second flap g at the upper end of the fourth side wall piece. When a force that pushes down the fourth flap k connected through the four-fold curve j into the box a acts on both flaps g, k, the second and fourth fold curves f, j become straight lines. Therefore, the second flap g rotates toward the inside of the box a with the second folding curve f as the rotation axis, and the fourth flap k has the fourth folding curve j as the rotation axis with the box a. The second and fourth flaps g and k are rotated inward and pushed down into the box a.

However, in the present invention, since the second and fourth folding curves 16 and 18 are convex curves, the second and fourth flaps 22 and 24 are pushed into the box body 1. When a force acts on both flaps 22 and 24, the second flap 22 is prevented from rotating toward the inside of the box body 1 by the second side wall piece 12, and the fourth flap 24 is moved toward the inside of the box body 1. Is prevented by the fourth side wall piece 14, and the second and fourth flaps 22 and 24 are bent toward the inside of the box body 1.

Therefore, the second and fourth flaps g, k of the conventional box a have a flexible thin plate member bent along a fold line when the elastic repelling closing part y is opened. The bending elastic force generated by the material is accumulated, while the second and fourth flaps 22 and 24 of the present invention are provided with a flexible thin plate material when the elastic repelling opening 20 is opened. The flexural resilience that occurs when the material is bent is accumulated.

The material bending elastic force generated when the flexible thin plate material is bent is the material bending elastic force generated when the thin plate material is bent along a bending curve. Since the restoring force is large and the restoring force has a long duration as compared with the above, in the present invention, the so-called waist strength of the second and fourth flaps 22 and 24 becomes stronger than the conventional box a. .

By the way, in the conventional box body a shown in FIG. 4, the first flap e and the third flap i are folded on the second and fourth flaps g and k with their leading edges q and r abutting each other. In contrast, in the present invention, as shown in FIG. 1, the first flap 21 and the third flap 23 are slightly overlapped with each other at their leading edges 21A and 23A so that the second and third flaps are overlapped. It is folded over the fourth flaps 22 and 24.

Therefore, in the conventional box a, the restoring force of the first, second, third and fourth flaps e, g, i, k begins to decrease, and the first and third flaps e, g When i starts to hang down, the closing of the opening m in the elastic repelling opening part y is immediately incomplete, whereas in the present invention, the first, second, third and fourth flaps 21, 22 are , 23, 24, even if the restoring force starts to decrease and the first and third flaps 21 and 23 start to hang down, the closing of the opening 27 at the repellent closing portion 20 causes the first and third flaps 21 and 23 to close. It is held until the superposition of the leading edges 21A and 23A of each other at 23 is canceled.

[0017]

【Example】

 As shown in FIG. 1, a box body 1 according to an embodiment of the present invention is a disposable waste container having a rectangular cross section and made of a flexible thin plate material that is a cardboard. The side wall portion 10 is formed by the first and third side wall pieces 11 and 13 and the second and fourth side wall pieces 12 and 14 that face each other. The side wall portion 10 is connected to the upper end of the first side wall piece 11 via the first folding line 15 1. The first flap 21 that has been formed, the second flap 22 that is connected to the upper end of the second side wall piece 12 via the second folding curve 16 and the upper end of the third side wall piece 13 that passes through the third folding curve 17 The elastic flap portion 20 is formed by the third flap 23 continuously provided in series and the fourth flap 24 continuously provided at the upper end of the fourth side wall piece 14 via the fourth fold line 18. The first and third folding curves 15 and 17 are straight lines, and the second and fourth folding curves 16 and 18 are convex upwards. There is a line.

As shown in FIG. 3, each of the first and third flaps 21 and 23 of the box body 1 is formed with a triangular notch 25 on both sides of the base, and has tongues on both sides of the tip. The portion 26 is formed.

In this box body 1, as shown in FIG. 1, the second and fourth flaps 22 and 24 are folded toward the inside of the box body 1 to the top surface position of the box body 1, and the top surface position is changed. A curved rectangular opening 27 is formed between the leading edges 22A and 24A of the second and fourth flaps 22 and 24 in the above, and the first and third flaps 21 and 23 slightly separate the leading edges 21A and 23A from each other. The second to fourth flaps 22 and 24 are overlapped and folded, and the tongue portions 26 of the first and third flaps 21 and 23 are folded from the openings 27 to the lower surfaces of the second and fourth flaps 22 and 24. Thus, the elastic repellent closing portion 20 for closing the opening 27 is formed.

Further, in the box body 1, as shown in FIGS. 1 to 3, the first bottom piece 31 and the second side wall piece 12 which are continuously connected to the lower end of the first side wall piece 11 via a linear bending line. A second bottom piece 32 connected to the lower end via a straight folding curve, a third bottom piece 33 connected to the lower end of the third side wall piece 13 via a straight folding curve, and a fourth sidewall piece 14 And a fourth bottom piece 34, which is continuously connected to the lower end of the same through a linear bending line, are combined with each other to form a bottom portion 30 that can be assembled and disassembled.

In the box body 1, the first side wall piece 11 and the second side wall piece 12, the second side wall piece 12 and the third side wall piece 13, and the third side wall piece 13 and the fourth side wall piece 14 are straight lines. The first side wall piece 11 and the fourth side wall piece 14 are joined to each other by a glue margin 19 connected to the left end of the first side wall piece 11 via a straight folding curve. The body 1 can be assembled and disassembled. In addition, in FIG. 3, the symbol X indicates the grain direction.

By the way, in the box body 1, the flexible thin plate material is thick paper, and the cross-sectional shape is rectangular. However, the flexible thin plate material is not limited to thick paper, and for example, It may be a synthetic resin thin plate or the like, and the cross-sectional shape is not limited to a rectangle, and may be, for example, a square or a trapezoid.

Further, although the box body 1 is a disposable waste container, it is not limited to a disposable waste container, and may be, for example, a small container.

Further, in the box body 1, the shape of the opening 27 is a curved quadrangle, but the shape of the opening 27 is not limited to the curved quadrangle, and may be, for example, a curved circle. It may be.

Further, in the box body 1, the bottom portion 30 of the box body 1 can be assembled and disassembled, and the box body 1 itself can be assembled and disassembled. However, the bottom portion 30 of the box body 1 is not disassembled. Therefore, the box body 1 itself may not be disassembled.

However, the box body 1 that can be assembled and disassembled has a storage space for the box body 1 that is disassembled when not in use, as compared with a box body that cannot be disassembled. It is more preferable because it is reduced and the disassembly of the box 1 is easy.

In the box body 1, the first and third flaps 21 and 23 are folded on the second and fourth flaps 22 and 24 with their leading edges 21A and 23A slightly overlapped. The overlapping of the leading edges 21A and 23A of the first and third flaps 21 and 23 with each other is "slightly" because the larger the overlapping, the more the first and third flaps 21 and 23 are formed. This is because it takes a long time to push down and open the elastic-repellent closing part 20, and it becomes troublesome to open the elastic-repellent closing part 20.

Further, in the box body 1, the second and fourth folding curves 16 and 18 are upwardly convex curves, but the second and fourth folding curves 16 and 18 are upwardly convex instead of downwardly convex. The convex curve means that when the second and fourth folding curves 16 and 18 are convex downward, the second and fourth flaps 22 and 24 are curved plates convex downward. This is because, if the second and fourth folding curves 16 and 18 are convexly curved, the second and fourth flaps 22 and 24 are curved plates that are convexly upward.

That is, when the second and fourth flaps 22 and 24 are curved plates having a downward convex shape, the second and fourth flaps 22 and 24 are provided to the box body 1 as compared with the case where the curved plates are convex upward. This is because the force required to bend it inwardly downward becomes large, and it becomes more troublesome to open the repellent closing portion 20.

[0030]

[Effect of device]

 In the present invention having the configuration and operation described above, the so-called waist strength of the second and fourth flaps is stronger than that of the conventional box a shown in FIG. Even if the elastic repellency closing port is repeatedly performed, there is an effect that the period in which the elastic repellency closing part is completely restored becomes longer than that of the conventional box a.

Further, in the present invention, even if the restoring force of the first, second, third and fourth flaps starts to decrease and the first and third flaps start to hang down, The closure does not immediately become imperfect as in the conventional box a shown in FIG. 4, but is held until the mutual overlapping of the leading edges of the first and third flaps is eliminated. After the resilience of each flap starts to decrease, the closing period of the opening at the elastic repellent opening is longer than that of the conventional box a, and therefore the appearance is less likely to be damaged than that of the conventional box a. It also has the effect of becoming.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an embodiment.

2 is a bottom view of what is shown in FIG. 1. FIG.

FIG. 3 is a developed view of what is shown in FIG.

FIG. 4 is a perspective view showing an example of a conventional product.

[Explanation of symbols]

 1 Box Body 10 Side Wall Part 11 First Side Wall Piece 12 Second Side Wall Piece 13 Third Side Wall Piece 14 Fourth Side Wall Piece 15 First Folding Curve 16 Second Folding Curve 17 Third Folding Curve 18 Fourth Folding Curve 20 Repellent Closure Part 21 1st flap 22 2nd flap 23 3rd flap 24 4th flap 21A 1st flap tip edge 22A 2nd flap tip edge 23A 3rd flap tip edge 24A 4th flap tip edge 26 Tongue 27 opening Department

Claims (1)

[Scope of utility model registration request] 1. A box body made of a flexible thin plate and having a quadrangular cross section, wherein first and third side wall pieces facing each other and second and fourth side wall pieces facing each other form a side wall of the box body. A second flap that is formed on the upper end of the second side wall piece through a second folding curve, and a fourth flap that is connected to the upper end of the fourth side wall piece through a fourth folding curve. The flap is folded toward the top surface position of the box body toward the inside of the box body, and an opening is formed between the tip edges of the second and fourth flaps at the top surface position. A first flap continuously connected to the upper end of the first side wall via a first folding curve and a third flap continuously connected to the upper end of the third side wall piece via a third side bending curve slightly The first and third flaps are overlapped and folded on the second and fourth flaps. Tongue portions formed on both sides of the end portion are folded from the opening portion to the lower surfaces of the second and fourth flaps to form an elastic repellent opening portion that closes the opening portion. A box body having the resilient and repellant closing portion, wherein the folding curve is a straight line and the second and fourth folding curves are convex curves.