JPH1111457A - Corrugated fiberboard box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a corrugated fiberboard box to be assembled and disassembled extremely easily without using a coupling device and further to allow the box to be collected as wastepaper without generating additional non-burnable waste after use. SOLUTION: The corrugated fiberboard box comprises side plates 3 constituting a parallelopiped body 2 and a bottom plate which are separate. In assembling the box, after the body 2 is put over the bottom plate 2 with internal flaps 7 formed on the bottom plate 4 standing, external flaps 8 formed on the bottom plate 4 are made to stand to come into contact with exterior of the side plates 3 and a joining flap 9 formed on the external flap 8 is inserted into a slit 10 formed on the side plate 3, thereby joining the side plate 3 and the bottom plate 4. Thus a coupling device for joining the side plate 3 and the bottom plate 4 is not additionally needed. Moreover if the joining flap 9 is formed like a sickle-shaped or an ant-neck shaped and a notch 11 for locking the sickle-shaped 9a or ant-neck shaped part of the joining flap 9 is formed on the slit 10, the side plate 3 and the bottom plate 4 can be more reliably joined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardboard box formed by joining paperboard (liner) obtained by cutting a cardboard sheet into a box.

[0002]

2. Description of the Related Art An outer corrugated cardboard box used for protection and transport of various products is stored and transported in a state of being folded flat before use, and formed into a box to be used as an article to be packed when used. Is to be inserted. The conventional general cardboard box in which the flaps serving as the top cover and the bottom cover are formed integrally with the side plate forming the rectangular cylindrical body, the box can be easily disassembled and folded into a flat shape after use. Recovery is easy.

By the way, when packing an object to be packed having a large weight or size such as an electric or electronic device, in the above-mentioned cardboard box, the object to be packed must be lifted to the height of the upper lid by a crane or the like. In addition, the packing work is not only troublesome, but also when a cardboard box containing such an object to be packed is manually loaded or transported, the labor burden is large and the working efficiency is poor.

In recent years, the bottom plate and the trunk have been separated so that the items to be packed can be packed without being lifted high, and the packed cardboard boxes can be loaded and transported using a forklift. In addition, a prism-shaped leg is attached to the lower surface of the bottom plate at a predetermined interval to form an insertion port for a fork, and a pallet type is used. According to this, after the object to be packed is lifted by the height of the bottom plate and placed on the bottom plate, the trunk to be the side plate is covered, and then the bottom plate and the trunk are joined to form a cardboard box. In addition, since the bottom plate is suspended from the ground by the legs, the fork of a forklift can be inserted between the bottom plate and the ground to lift the cardboard box for loading and transportation.

Conventionally, as shown in FIG. 4, an elliptical handle hole 44 that penetrates the flap 41 of the bottom plate and the side plate 43 of the body 42 has been formed in advance to join the bottom plate and the trunk. In addition, a plastic fitting (hereinafter simply referred to as a “P joint”) 45 is fitted into the handle hole 44. This P joint 45 is
Opening / closing wings 47 are formed at the tip of the elliptical cylindrical body 46 inserted into the tube 4, and a flange 48 is formed at the other end of the elliptical cylindrical body 46. Then, after inserting the P joint 45 into the handle hole 44 with the wings 47, 47 closed, the knobs 49 are pushed in to expand the wings 47, 47 so that the wings 47, 47 are expanded.
The flap 41 of the bottom plate and the side plate 43 of the body portion 42 are sandwiched between the flange 47 and the flange 48, and are securely connected.

[0006]

However, when the cardboard box is assembled using the P joint 45, it is necessary to close the wings 47 of the P joint 45 when disassembling it after use. The user has to pull the knob 49 with force, and while removing the plurality of P joints 45, the fingertip becomes painful, and there is a problem that the work load increases. Also, when collecting used cardboard boxes, the cardboard sheets forming the bottom plate and the trunk can be collected and used as recycled paper, but since the P joint 45 is made of plastic, it is recycled as a resource. However, there is a problem in that it has to be disposed of as non-combustible garbage and adversely affects the environment.

Therefore, the present invention can assemble and disassemble a cardboard box without using any fasteners, eliminates the trouble of handling the fasteners, reduces the work load, and is extremely easy to assemble and disassemble. Furthermore, it is a technical problem that the waste paper can be collected as used paper without generating new incombustible waste after use.

[0008]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a cardboard box formed by joining a side plate and a bottom plate forming a rectangular cylindrical body to form a box. The bottom shape of the portion and the bottom plate are formed in an even-numbered polygon, and each side of the bottom plate is in contact with an inner flap inserted along the inner surface of the body and along the outer surface of the body. The outer flaps are alternately formed, and each of the outer flaps includes
A joining flap raised toward an outer surface of the body is formed, and a slit is formed in the side plate to insert the joining flap into the body.

According to the present invention, the bottom plate and the side plate are configured to be separated from each other. First, the inner flap and the outer flap formed on the bottom plate are expanded, and the object to be packed is placed thereon.
In the state of standing upright so that the inner flap can be inserted along the inner surface of the side plate, a square tubular body is covered. Then, in a state where the joining flap formed on the outer flap is raised toward the outer surface of the body, the outer flap is erected along the inner surface of the side plate, and the joining flap is placed on the side plate. Into the slit formed in the. At this time, since the joining flap is caused by bending an external flap formed of a thick corrugated cardboard sheet, a force for returning to the original state is exerted by the elasticity of the corrugated cardboard sheet.
As a result, the joining flap is opened in the body when inserted into the slit, and the external flap is fixed to the side plate, thereby completing the packing operation. In addition, if the joining flap is formed in the shape of a sword neck or dovetail, and the slit is formed with a notch for engaging the sword neck or the dovetail of the joining flap, the sword neck or the dovetail of the joining flap is formed. The neck is caught by the notch of the slit, and the external flap and the side plate can be more securely fixed. Also, when dismantling, put the fingers etc. in the slit and pull out the external flap with the joining flap standing upright from the outside of the cardboard box,
Even if the joining flap is formed in the shape of a sickle or dovetail, it is pulled out of the slit and the trunk and the bottom plate come off.

Thus, without using any fasteners,
The cardboard box can be assembled and disassembled extremely easily, there is no need to handle the coupling, and the work load during packing and unpacking is reduced. In addition, since the joining flap is engaged with the slit and the bottom plate is securely joined to the body, the cardboard box thus assembled has strength enough to withstand a forklift or manual loading / transporting operation. Further, since no fasteners are used, after use, it can be recovered as used paper without producing new non-combustible waste.

[0011]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a cardboard box according to the present invention, FIGS. 2A to 2D are explanatory views showing an engagement state between a bottom plate and a side plate, and FIG. 3 is a perspective view showing an assembled state of the cardboard box. It is.

The corrugated cardboard box 1 of the present embodiment has a rectangular cylindrical body 2
The side plate 3 and the bottom plate 4 are joined together to form a rectangular parallelepiped box. In this case, the bottom shape of the body portion 2 and the bottom plate 4 are formed in a rectangular shape. However, the present invention is not limited to this, and a square, a parallelogram, an inequilateral square,
It may be formed in a polygon with even-numbered sides such as a hexagon and an octagon.

The bottom plate 4 has a plurality of liners 5, 5...
Are adhered at predetermined intervals. For example, in the case of a two-way insertion type in which a fork can be inserted in two front and rear directions or two left and right directions, the legs 6 are formed in parallel along the front and rear or left and right directions of the bottom plate 4, and In the case of a four-sided insertion type (not shown) into which a fork can be inserted from four directions, for example, nine legs in a cubic shape are arranged in three rows in front and rear and three rows in left and right.
They are arranged in a row at predetermined intervals.

A pair of inner flaps 7 are formed on the bottom plate 4 at front and rear opposing sides along the inner surface of the body 2, and at the left and right opposing sides, the body flaps are provided. A pair of external flaps 8, which are abutted along the outer surface of 2,
8 are formed. And each of the foreign law flaps 8,
8, joining flaps 9, 9 raised toward the outer surface of the body 2 are formed on both left and right end sides. As shown in FIG. 2 (b), each joining flap 9 has a notch 8a formed in the outer flap 8, and as shown in FIG. 2 (b), when the joining flap 9 is raised, the tip is wide and the root portion is narrow. The sickle neck 9a is inserted into a slit 10 to be described later and is hooked to the side plate 3.

A slit 10 for inserting the joining flap 9 into the body 2 is provided at a lower end side of the side plate 3 forming the rectangular cylindrical body 2 with a sickle neck of the joining flaps 9, 9. The slit 10 is formed to have a length capable of inserting a wide portion on the distal end side thereof, and the slit 10 is formed with a notch 11 having a width of a narrow neck portion at the base of the sickle neck 9a along the longitudinal direction. Have been. And this slit 10
When the joining flap 9 is inserted into the notch 11, the sickle neck 9a of the joining flap 9 opens outward due to the elasticity of the cardboard, and the narrow neck portion of the base fits into the notch 11. Therefore, a wide portion on the tip side of the sickle neck 9a, which is wider than the width of the notch 11, is caught by the notch 11 and cannot be removed, so that the external flap 8 is fixed to the side plate 3, and the bottom plate 4 is securely connected to the body 2. Is spliced.

Further, a pair of inner flaps 13, 13 and a pair of outer flaps 14, 14 serving as an upper lid 12 are respectively opposed to the upper end of the rectangular tube-shaped body 2, and are integrally formed with the side plate 3. Inner flaps 13, 13 formed and folded inward
The outer flaps 14, 14 are formed so as to be folded and closed so as to abut each other from above. The configuration of the upper lid 12 is not limited thereto, and may be a case where a plug-in type flap is formed or a case where a lid formed separately from the side plate 3 is used.

Each of the external flaps 8 has a handle hole 1
5 is formed, and a finger through hole 16 is formed in the side plate 3 so as to communicate with the handle hole 15 when the external flaps 8 are brought into contact with the outer surface of the body 2. I have. The handle hole 15 is formed by making an elliptical cut in the outer flap 8 except for the upper side, and in a state where the outer flap 8 is brought into contact with the outer surface of the body 2, the elliptical cut is formed. The tongue piece 15a is pressed into the inside of the body 2 and folded so that the tongue piece 15a is engaged with the finger passage hole 16 in a communicating state.

The above is an example of the configuration of the present invention, and its operation will be described next. First, before use, the body 2 is folded and stored in a flat plate shape, and the bottom plate 4 is arranged such that the lower surfaces on which the legs 6 are formed face each other so that the legs 6 are inconsistent,
If the surfaces on which the articles W to be packaged are placed face to face and stored in an overlapping manner, the storage space can be saved. And
When packing the article to be packed W, first, as shown in FIG. 1, the inner flaps 7, 7 and the outer flaps 8, 8 formed on the bottom plate 4 are expanded, and the Put object W on. At this time, if the article to be packed W is lifted and moved by the height of the bottom plate 4, it can be placed on the bottom plate 4, and it is not necessary to lift it up to the height of the body 2. It becomes possible.

Then, the inner flaps 7, 7 are set upright so that they can be inserted along the inner surface of the side plate 3, and are covered with the rectangular tubular body 2, as shown in FIG. 2A. The outer flaps 8, 8 protrude around the body 2. Next, as shown in FIG.
Are raised toward the outer surface of the body 2. Then, as shown in FIG. 2 (c), the external flap 8 is erected so as to abut on the inner surface of the side plate 3, and the joining flap 9 is fitted to the slit 10 formed in the side plate 3 by its sword neck. 9a from the tip side.

When the joining flap 9 is bent from the outer flap 8 and raised, the force for returning the joining flap 9 to a state flush with the outer flap 8 due to the elasticity of the corrugated cardboard sheet. Due to this repelling force, the joining flap 9 causes the slit 1 as shown in FIG.
When it is inserted into the inner portion 0, it opens in the body 2, and the narrow neck portion of the base fits into the notch 11. Therefore,
A wide portion on the distal end side of the sickle neck 9a, which is wider than the width of the notch 11, is caught by the notch 11 and does not come off, whereby the external flap 8 is securely fixed to the side plate 3. Then, the tongue piece 15 of the handle hole 15 formed in the external flap 8
a, and is folded inward and upward so as to wrap the upper side of the finger through hole 16 formed in the side plate 3, as shown in FIG. 2D, the handle hole 15 and the finger through hole 16 are in communication with each other. Are combined.

When the body 2 and the bottom plate 4 are joined together to form the corrugated cardboard box 1, a cushioning material (not shown) is provided in the body 2 in the gap between the article W to be packed and the side plate 3. Fill. And finally, the inner flap 1 serving as the upper lid 12
Fold the outer flaps 14, 14 from above
When the sheets are folded so as to abut each other, and the packing adhesive tape 17 is attached and closed as shown in FIG. 3, the packing operation using the cardboard box 1 is completed.

In this state, the fork of the forklift can be loaded and transported by inserting it under the bottom plate 4, and if the cardboard box 1 is just repositioned, the side plates opposed by two workers Each handle hole 1 formed in 3, 3
It is also possible to put a finger in 5, 15 and carry it by hand.

Next, when disassembling the cardboard box 1 packed in this manner, first, the outer flaps 8 of the bottom plate 4 are disassembled.
When a finger is attached to the sickle neck 9a of the joining flap 9 formed in the above, and the finger is inserted into the notch 11 of the slit 10,
Since the joining flap 9 is raised substantially vertically, the engagement between the sickle neck 9a and the notch 11 is released. Then, if the external flap 8 is pulled out as it is, the tongue piece 15 of the handle hole 15 is formed.
a is also pulled out from the finger hole 16 and the external flap 8 comes off the side plate 3. Therefore, if the outer flaps 8 on both sides are opened in this way, the trunk 2 and the bottom plate 4 are separated, and if the trunk 2 is pulled upward in this state, the package can be easily unpacked. As described above, according to the present embodiment, the cardboard box 1 can be assembled without using any engaging tools, so that when the cardboard box 1 is disassembled after use, no incombustible dust is generated, and it is easy to use as used paper. Can be recovered.

In the above description, a case has been described in which the joining flap 9 is of a sickle-neck type, but it may be of a dovetail-type in which the width gradually increases toward the distal end.

[0025]

As described above, according to the present invention, a cardboard box can be assembled very easily only by folding and inserting each flap, and it can be easily disassembled after use. Since there is no need to handle tools, it is possible to reduce the work load when packing and unpacking,
Since no fasteners are used, there is an excellent effect that after use, it can be collected as used paper without generating new incombustible waste.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a cardboard box according to the present invention.

FIGS. 2A to 2D are explanatory views showing an engagement state between a bottom plate and a side plate.

FIG. 3 is a perspective view showing an assembled state of the cardboard box according to the present invention.

FIG. 4 is a perspective view showing a conventional cardboard box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Corrugated cardboard box 2 ... Trunk 3 ... Side plate 4 ... Bottom plate 5 ... Liner 6 ... Leg 7 ... Inner flap 8 ... Outer flap 9 ... -Joining flap 9a-Sickle neck 10-Slit 11-Notch 12-Top cover 13-Inner flap 14-Outer flap 15-Handle hole 16-Finger hole

Claims (8)

[Claims] 1. A corrugated cardboard box formed by joining a side plate (3) and a bottom plate (4) forming a square cylindrical body (2), wherein the bottom shape of the body (2) is provided. And a bottom plate (4) are formed in a polygon with even-numbered sides, and each side of the bottom plate (4) has
An inner flap (7) inserted along the inner surface of the body (2) and an outer flap (8) abutted along the outer surface of the body (2) are formed alternately. The outer flap (8) has a joining flap (9) formed toward the outer surface of the body (2), and the side plate (3) is provided with the joining flap (9). (2) A cardboard box characterized by having a slit (10) inserted therein. 2. The cardboard box according to claim 1, wherein a plurality of legs (6, 6,...) Are adhered to the lower surface of the bottom plate (4) at predetermined intervals. 3. A plurality of liners (5, 5) in which the legs (6) are laminated with flutes arranged vertically or horizontally.
The cardboard box according to claim 2, wherein the cardboard box is formed by: 4. An upper lid (12) integrally with said side plate (3).
4. The cardboard box according to claim 1, wherein flaps (13, 14) are formed. 5. The connecting flaps (9) are formed at both left and right ends of each of the outer flaps (8).
A cardboard box according to any one of claims 1 to 4. 6. The cardboard box according to claim 1, wherein the joining flap (9) is formed in a sickle or dovetail shape. 7. A notch for hooking a sickle neck (9a) or a dovetail neck of the joining flap (9) in the slit (10).
The cardboard box according to claim 6, wherein (11) is formed. 8. A handle hole is provided in each of the external flaps (8).
(15) is formed and communicates with the handle hole (15) when the outer flaps (8) are brought into contact with the side plate (3) along the outer surface of the body (2). A cardboard box according to any one of claims 1 to 7, wherein a finger through hole (16) is formed.