JP3356274B2 - Structure of corrugated cardboard assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a cardboard assembly which can be used as a pallet for storing and transporting products, or as a table or a chair.

[0002]

2. Description of the Related Art Generally, most pallets used for storing and transporting products are made of wood, synthetic resin or metal. However, in recent years, paper pallets using cardboard have been scattered from the viewpoints of increasing interest in recycling, consideration of the environment, reduction of manufacturing costs, and the like.

As a paper pallet of this type, there is a paper pallet having a structure in which a pair of upper and lower corrugated boards are connected by a plurality of paper tubes. The characteristics of paper pallets are that they are easy to recycle, generate less toxic gas when incinerated, and contribute to the suppression of air pollution.In addition, they are damaged by pests found on wooden items and damaged by protruding nails. And that it is lightweight and inexpensive.

[0004] However, such a paper pallet has a disadvantage that it is inferior in strength as compared with pallets made of other materials. Therefore, in order to ensure that the strength is not inferior as much as possible, a special binder (joining material, joining material) or a reinforcing material made of a material other than paper is used to increase the strength of the cardboard board, or to use a special structure By connecting the corrugated board and the paper tube, the strength of these connecting portions is increased.

[0005]

In a conventional paper pallet, a special binder or a reinforcing material other than paper is used to enhance the strength, or a special structure is used for connecting the corrugated board and the paper tube. The adoption of this method has the disadvantage that the material cost increases and the structure becomes complicated, so that the manufacturing cost cannot be reduced so much even though it is made of paper. In addition, the use of reinforcing materials other than paper requires the work of removing the reinforcing materials when the used pallets are crushed and recycled for recycled materials or recycled cardboard, which makes the recycling work cumbersome. There was also.

Further, since virgin corrugated cardboard is used for the corrugated cardboard, it has not been possible to meet demands for environmental considerations, which has been a cause of high costs.

Further, in the case of a conventional paper pallet, since the lower surface of the lower corrugated board or the lower end of the paper tube comes into contact with the ground, the ground is wet or wet by rainwater or the like. Occasionally, the moisture penetrates into the corrugated board or the paper tube, so that the strength of the pallet is remarkably weakened. As a result, the pallet cannot bear the weight of the loaded product, and there is a danger of collapse of the load.

The present invention solves the above-mentioned disadvantages, and makes it easy to recycle by making most of the constituent members made of paper. Moreover, the structure is simple, the strength is high, and the manufacturing cost is reduced. An object of the present invention is to provide a structure of a corrugated cardboard assembly that can be used. It is another object of the present invention to provide a structure of a corrugated cardboard assembly which is environmentally friendly and excellent in safety. It is still another object of the present invention to provide a structure of a corrugated cardboard assembly which, when used as a pallet, has a good product loading efficiency and is capable of stable and highly reliable loading.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a pair of upper and lower corrugated cardboard plates, and a plurality of paper tubes connecting the upper and lower corrugated cardboard plates ,
The small-diameter portions formed at the upper and lower ends of the paper tube via step surfaces are inserted into paper tube insertion through holes formed respectively in the upper and lower cardboard boards, and the step surface of the paper tube is inserted into the upper cardboard. A corrugated cardboard assembly which is brought into contact with the lower surface of the plate and the upper surface of the lower corrugated cardboard plate, and in this state, the corrugated cardboard plate and the paper tube are integrally bonded by an adhesive;
The corrugated board at the top of the assembly is
With a new cardboard board that is stacked at intervals
The small diameter part on the upper side of the paper tube in the cardboard assembly.
Extend above the corrugated board on the side
Paper tube through a flexible cardboard board, and
The small-diameter part extended toward the
Removably connected via a connecting cylinder fitted over the
It is characterized in that was.

[0010] In the invention of claim 2, the corrugated board and the paper tube are manufactured using waste materials such as used paper or recycled paper as raw materials.

According to a third aspect of the present invention, there is provided a pair of upper and lower corrugated cardboard plates, and a plurality of paper tubes connecting the upper and lower corrugated cardboard plates, and screws formed at upper and lower ends of the paper tubes via step surfaces. The small-diameter portion with a screw is screwed into a threaded through-hole for inserting a paper tube formed in each of the upper and lower cardboard plates, and at least the lower surface side of the upper cardboard plate and the upper surface side of the lower cardboard plate. A threaded paper washer is screwed into the small diameter portion of the paper tube, and the threaded paper washer is brought into contact with the stepped surface of the paper tube.
A ball assembly and a cardboard above the cardboard assembly
It is stacked on the board at an interval for storing articles.
New corrugated board, which is used for corrugated board assembly.
The small diameter part on the upper side of the paper tube above the corrugated board on the upper side.
To a new paperboard
With the small-diameter part extended upward.
The lower end of the continuation paper tube is connected over the
It is characterized by being detachably connected via a tube .

In the invention of claim 4, the corrugated board, the paper tube, and the paper washer are integrally bonded by an adhesive.

[0013] In the invention of claim 5, comprising a pair of upper and lower corrugated cardboard plates, and a plurality of paper tube for connecting the upper and lower corrugated plate to form via a stepped surface on the lower end portion of the paper tube diameter Parts are inserted into through holes for paper tube insertion formed respectively in the upper and lower corrugated cardboard plates, and paper is inserted into a small diameter portion of the paper tube at least on the lower surface side of the upper corrugated cardboard plate and the upper surface side of the lower corrugated cardboard plate. A paper washer is fitted over the paper washer, and the paper washer is brought into contact with the step surface of the paper tube. In this state, the corrugated board, the paper tube, and the paper washer are integrally bonded by an adhesive. Cardboard
Assembly and the upper corrugated board of this corrugated board assembly
In contrast, new products are stacked at intervals to accommodate goods.
Paperboard in a corrugated board assembly
Extend the small diameter section on the upper side of the pipe above the corrugated board on the upper side.
And connect the paper tube to a new cardboard board.
For the connection with the small-diameter part
Connect the lower end of the paper tube to the connecting tube
It is characterized in that it is detachably connected via a cable .

In the invention of claim 6, the corrugated board, the paper tube, and the paper washer are manufactured using waste materials such as waste paper or recycled paper as raw materials.

[0015]

[0016]

[0017]

In the invention of claim 7, a box-shaped paper frame material in which a plurality of product storage sections are formed is attached to the upper surface of the upper corrugated board and the new corrugated board.

In the invention of claim 8 , a wooden leg is detachably attached to the lower end of the paper tube.

In a ninth aspect of the present invention , the gap between the upper and lower corrugated cardboard plates is formed as an insertion portion for inserting a fork of a forklift, so that the space is used as a pallet carried by the forklift.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIG. 1 is an exploded perspective view of a corrugated cardboard assembly according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a main part thereof, and FIG. 4 is a perspective view of a corrugated board, FIG. 5 is a perspective view of a paper tube, FIG. 6 is an exploded perspective view showing a state in which a new corrugated board is stacked, and FIG. It is a longitudinal cross-sectional view which shows the state at the time of connection.

The cardboard assembly (1) of the present embodiment is shown in FIG.
3, a pair of upper and lower rectangular cardboard plates (2) and (3), and a total of nine substantially cylindrical paper tubes (4) connecting these upper and lower cardboard plates (2) and (3). ), (4)..., And the gap between the upper and lower cardboard plates (2) and (3) is used as an insertion portion for inserting a fork of a forklift, and is used as a pallet for storing and transporting products. Things.

As shown in FIG. 4, the corrugated cardboard plates (2) and (3) have a thickness of about 15 mm in which six reinforced corrugated cardboard thin plates (5) (5) are laminated by bonding with an adhesive. A total of nine through-holes for insertion of paper cores are provided at the periphery and the center.
(6) (6) are formed at substantially equal intervals. As the corrugated board (2) (3), for example, four reinforced corrugated board (5) (5). And eight laminated sheets of reinforced corrugated cardboard (5) (5) are prepared and used according to the strength of the paper tubes (4) (4) and the weight of the product to be loaded. ing.

As shown in FIG. 5, the paper tube (4) has small diameter portions (8) and (8) formed at the upper and lower ends via step surfaces (7) and (7), respectively. The paper tube (4) has an outer diameter of about 96 mm at the center and a thickness of about 10 mm. The small diameter portions 8 have an outer diameter of about 92 mm and a wall thickness of about 8 mm. The dimensions of the paper tube (4) are not limited to the above.

The small diameter portion (8) (8) of the paper tube (4)
Are the through-holes of the upper and lower cardboard plates (2) and (3) facing each other.
(6) Inserted into (6), the upper step surface (7) of the paper tube (4) comes into contact with the lower surface of the upper cardboard plate (2), and the upper surface of the lower cardboard plate (3) The lower step surface (7) on the lower side of the paper tube (4) is in contact. In this state, the upper and lower cardboards (2) and (3) and the paper tube (4) are integrally bonded by an adhesive,
A cardboard assembly (1) is assembled.

In this corrugated board assembly (1), all of the corrugated board (2) (3) and the paper tubes (4) (4)... Are manufactured from waste materials such as waste paper or recycled paper. As a result, manufacturing costs can be kept low, and after use, all components can be crushed again to be used as recycled materials, which is easy to recycle. It also contributes to the suppression of Moreover, a vinyl acetate emulsion-type water-soluble adhesive is used as an adhesive for bonding between the members, so that each member can be easily regenerated without special treatment. I have.

In terms of strength, the above cardboard assembly
When a load test was performed using (1), it was found that the load test could withstand a load of about 20 tons. Also a paper tube
Since the step surfaces (7) and (7) of (4) are bonded to the upper and lower cardboard plates (2) and (3), respectively, the cardboard plates (2) and (3) and the paper tube The bonding area with (4) is large, and the connection strength between them can be increased, and separation of the corrugated board (2) (3) from the paper tube (4) when the corrugated board assembly (1) is lifted by a forklift is prevented. In this way, it is possible to sufficiently resist tearing and shearing force.

In the above-mentioned corrugated board assembly (1), as shown in FIGS. 1 to 3, the upper corrugated board (2)
A top plate (31) is attached to the upper surface of the device, and products are loaded on the top plate (31). The top plate (31) is a corrugated board (2)
It is made of a reinforced corrugated cardboard sheet used in (3). On its upper surface, that is, on the product loading surface, for example, a rubber linear anti-slip material (32) is attached at substantially equal intervals by an adhesive. It has a non-slip finish. In addition, top plate (3
1) may be attached to the upper surface of the corrugated board (2) with an adhesive, or may be merely placed. The anti-slip material (32) is not limited to a linear shape, and may be a point-like material.
In addition, instead of attaching the anti-slip material (32),
Non-slip processing may be performed by directly applying rubber or the like to the upper surface of (31).

As described above, the top plate (3
By attaching 1), it is possible to further increase the strength against deformation such as inclination of the upper corrugated board (2), and to prevent the collapse of the loaded product and the slippage of the loaded product, thereby ensuring the safety. .

When the corrugated cardboard assembly (1) is placed on the ground, the lower ends of the paper tubes (4) (4) are grounded, but the ground is wet by rainwater or the like. When it is wet, the moisture may permeate into the paper tubes (4), (4), etc., and the strength of the cardboard assembly (1) may be significantly impaired. Therefore, in such a situation, FIG.
As shown in FIGS. 3 to 3, wooden legs (4) are attached to the lower ends of the paper tubes (4) (4) located at least at the four corners of the cardboard boards (2) and (3).
0) (40) ...

The wooden leg member (40) is processed by using waste material such as wood remaining at the time of sawing, and has a substantially prismatic base (41) and a substantially columnar base integrally formed at the center thereof. Projection (4
2), and at the base of this projection (42), an annular groove
(43) is formed. Then, the protrusion (42) is inserted into the opening at the lower end of the paper tube (4), and the lower corrugated cardboard plate is inserted into the paper tube (4).
The leg member (40) is detachably attached to the paper tube (4) by fitting the small-diameter portion (8) projecting below (3) into the annular groove (43). The projections (42) are chamfered (44) to facilitate insertion into the lower end opening of the paper tube (4). A caster (not shown) can be attached to the lower surface of the leg member (40), so that the cardboard assembly (1) can be easily moved.

By attaching the leg members 40 to the lower ends of the paper tubes 4 in this manner, the paper tubes 4 can be mounted.
Is not in direct contact with the ground, so that deterioration of the paper tubes (4) (4) due to the infiltration of moisture can be prevented, and collapse of the load can be prevented. Moreover, the pressure resistance of the paper tube (4) can be improved, and the corrugated cardboard assembly (1) can be installed in a stable state with little shaking. Therefore, safety can be remarkably improved.

Further, in the above-mentioned corrugated cardboard assembly (1), as shown in FIGS. 6 and 7, a new corrugated cardboard plate (50) is appropriately arranged in the vertical direction with respect to the upper corrugated cardboard plate (2). By stacking them at intervals, by attaching a box-shaped paper frame material (51) (51) for storing products on the upper surface of the upper corrugated board (2) and the new corrugated board (50), respectively. Thus, the loading capacity of the product can be increased. In addition,
In this case, the top plate (31) has been removed.

A new corrugated board (50) used at this time
Is the corrugated board used in the corrugated board assembly (1)
(2) The same one as (3) is used, and a total of eight through holes (52), (52)... . And these through holes
In (52), (52), connection paper tubes (53), (53),. The connecting paper tube (53) is set to have the same outer diameter and thickness as the small diameter portion (8) of the paper tube (4) on the corrugated cardboard assembly (1) side.

On the corrugated cardboard assembly (1) side,
The upper small diameter portion (8) of the paper tube (4) extends upward,
The lower end of the connection paper tube (53) is detachably connected to the upper end of the small diameter portion (8) via a paper connection tube (55). The connecting cylinder (55) is, as shown in FIG.
(8) has an inner diameter slightly larger than the outer diameter of the connection paper tube (53), and the thickness thereof is set slightly larger than the small diameter portion (8) and the connection paper tube (53). The portion (8) and the connection paper tube (53) are externally fitted to these over the portion. In addition, small diameter part (8)
The outer peripheral edge of the upper end of the connecting pipe, the outer peripheral edge of the lower end of the connection paper tube (53), and the inner peripheral edge of the upper and lower ends of the connecting tube (55) allow some dimensional errors to facilitate connection. Chamfering
(56) is given.

The paper frame material (51) is a rectangular frame-shaped outer frame (6).
0) and a plurality of vertical plates (61) (61) ... in a lattice form, and considerably, by fitting the partition frame (62) into the outer frame (60), a plurality of The product accommodating sections (63) (63) are sectioned. This paper frame material (5
1) is mounted on the upper surface of the upper corrugated board (2) and the new corrugated board (50) so that the outer frame (60) surrounds the connecting cylinders (55) (55). The paper frame material (51) is simply placed on the upper surface of the corrugated board (2) (50), and the outer frame (60) comes into contact with the connecting cylinders (55) (55). The cardboard boards (2) and (5) may be supported on the cardboard boards (2) and (50), or may be bonded to the upper surfaces of the cardboard boards (2) and (50) with an adhesive.

Further, a ceiling board (65) is provided above the new corrugated board (50). This ceiling panel (6
5) is the same as the new corrugated board (50), and the through-hole for inserting the paper tube of the ceiling plate (65) is used in the same manner as the corrugated board (50). ) (53) are held through. Then, similarly to the above, the connection paper tubes (53) and (53) of the corrugated cardboard plate (50) and the ceiling plate (65) are detachably connected to each other via the connection tube (55), so that the ceiling plate (65 ) Is attached so as to cover the upper part of the paper frame material (51).

In such a cardboard structure, the distance between the upper cardboard board (2) and the new cardboard board (50) and the distance between the cardboard board (50) and the ceiling board (65) are , Connecting cylinder
The upper and lower ends of (55) are determined by contacting the cardboard boards (2) and (50) and the ceiling board (65), respectively. That is, it is determined by the height of the connecting cylinder (55). Therefore, in the present embodiment, by appropriately using connecting cylinders (55) having different heights, these distances can be easily changed, and the height of the corrugated cardboard boards (50) and the ceiling boards (65) can be changed. Adjustment is possible. As a result, the product storage section (63) (6) of the paper frame material (51)
3) Even if the size of the product to be stored changes, the height can be adjusted according to the size, so that the product can be
It is possible to prevent improper loading such as hitting the lower surface of the (50) or the ceiling plate (65).

The connecting cylinders (55) having different heights as described above.
Instead of using a paper tube, a paper tube (4)
The height may be adjusted by interposing a spacer (not shown) between the connection paper tube (53) and the connection paper tube (53), (53). Further, the distance may be determined by the height of the paper frame material (51), and the height may be adjusted by appropriately using the paper frame materials (51) having different heights. . In this case, the storage capacity of the product can also be changed. Furthermore, each paper core is connected to the connecting cylinder (55).
(4) Press in (53) and use the cardboard board (5
In the case where the structure (0) or the ceiling plate (65) is held at a predetermined height position, the height can be adjusted without replacing the connecting cylinder (55) or using a spacer.

[0041]

Further, the storage form of the paper frame material (51) is not limited to the above, and for example, a plurality of types of partition frames (62) are prepared and stored in accordance with the size and type of the product. You may make it change a form suitably.

Furthermore, the number of new cardboard boards (50) to be stacked is not limited to one as described above.
A plurality of sheets such as sheets may be used. In this case as well, the stacking is to be carried out using the connection paper tube (53) and the connecting cylinder (55) in the same manner as described above, and the upper surface of the new stacked cardboard board (50) is made of paper. Attach the frame material (51).

In this manner, a new corrugated board (50) is stacked on the upper corrugated board (2), and the plurality of product storage sections (63) ( 63) By mounting the paper frame material (51) with multi-stages, not only the product loading efficiency is improved, but also the product stacking pressure can be distributed and the products can be loaded in an organized state. This makes it possible to achieve highly reliable loading with less loading defects.

Such a loading method is particularly effective when loading flowers, fruits, vegetables, etc., which are crushed or lose their shape due to stacking. Product storage section of material (51) (63) (6
By distributing and storing in (3), stacking pressure can be applied and orderly loading can be performed.

When a product in which liquid, powder, or viscous contents are stored in a resin film or a container is to be loaded, these products are usually packaged in units of several pieces outside a cardboard box. Although the product is stored in a box or the like and loaded, the outer box can be eliminated by directly storing these products in the product storage portions (63) (63) of the paper frame material (51). At the same time, the work of packing the product in the outer box can be eliminated, and the cost and labor can be reduced. Moreover,
At this time, since the products can be stacked so that the stacking pressure is not applied, the resin film, the container, and the like are not damaged and the contents do not flow out.

(Second Embodiment) FIGS. 8 and 9 are longitudinal sectional views of a main part of a cardboard assembly according to a second embodiment. The corrugated cardboard assembly (70) of the present embodiment includes through-holes (73) (7) for inserting paper cores in upper and lower corrugated boards (71) (72).
3) Screws (74) and (74) are formed in the hole walls. Further, the paper tube (75) has small-diameter portions (77) and (77) formed at upper and lower ends thereof through step surfaces (76) and (76). Are formed with screws (78) and (78), respectively.

The small-diameter portions (77) and (77) of the paper tube (75) are connected to the through-holes (73) and (7) of the upper and lower cardboard plates (71) and (72).
3), and screws (79) into the small diameter portions (77) and (77) of the paper tube (75) on the lower surface side of the upper cardboard plate (71) and the upper surface side of the lower cardboard plate (72). ) (79) with paper washer (80)
(80) are fitted to each other, and these paper washers (80) (80)
Are in contact with the step surfaces (76) and (76) of the paper tube (75). Also,
The upper and lower corrugated board (7) of the upper corrugated board (71)
At the bottom side of 2), screw the small diameter part (77) (77) of the paper tube (75)
(81) A paper washer (82) (82) for fastening with the (81) is screwed.

In this state, the upper and lower corrugated board (71) (72),
The paper tubes (75) (75), the paper washers (80) (80), and the paper washers (82) (82) are integrally bonded by an adhesive, and the connection by screwing is also combined. And corrugated board (71) (72)
And the strength of the connection between the paper tubes (75), (75) ... is significantly increased.

The other structure is the same as that of the first embodiment, and the top plate (31) and the paper leg member (40) are used in the same manner as in the first embodiment. In addition, a new cardboard board (5
The stacking of 0) is also performed in the same manner as in the first embodiment.

(Third Embodiment) FIG. 10 is a longitudinal sectional view of a main part of a corrugated cardboard assembly according to a third embodiment. The corrugated cardboard assembly (90) of the present embodiment has a small diameter portion (93) at the upper and lower ends of the paper tubes (91) (91)... Via step surfaces (92) (92).
(93) are formed respectively, and these small-diameter portions (93) and (93) are further smaller in outer diameter than the small-diameter portions (93) and (93) through another step surface (94) and (94). Small diameter portions (95) (95) are formed.

Then, the small diameter portions (93) and (93) of the paper tube (91)
Are the through-holes of the upper and lower cardboard plates (2) and (3) facing each other.
(6) Inserted in (6) respectively. On the lower side of the upper corrugated board (2) and on the upper side of the lower corrugated board (3), an annular paper washer (96) is attached to the small-diameter portion (93) (93) of the paper tube (91). (96) are externally fitted, respectively, and circle the minimum diameter portions (95) (95) of the paper tube (4) on the upper surface side of the upper cardboard plate (2) and the lower surface side of the lower cardboard plate (3). Annular paper washer (9
7) (97) are each fitted outside.

The paper washers (96) and (96) abut against the step surfaces (92) and (92) of the paper tube (91), and the paper washers (97) and (97) are connected to another step surface (94). (94). In this state, the upper and lower cardboards (2) and (3), the paper tube (91), and the paper washer (96)
A corrugated cardboard assembly (90) is assembled by integrally bonding (96), (97) and (97) with an adhesive.

As described above, the paper washers (96) (96) (97)
(97) is brought into contact with the step surfaces (92) (92) (94) (94) to bond the paper tube (91) with the paper washer (96) (96) (97) (97). The area increases, and the cardboard boards (2) and (3) and the paper tube
The connection strength with (91) is greatly increased.

The other structure is the same as that of the first embodiment, and the top plate (31) and the paper leg material (40) are used in the same manner as in the first embodiment. In addition, a new cardboard board (5
The stacking of 0) is also performed in the same manner as in the first embodiment.

The present invention is not limited to the above embodiment, and it goes without saying that modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the cardboard assembly of the present invention can be used not only as a pallet for storing and transporting products, but also as a simple desk or chair. In particular, in the corrugated cardboard assembly according to the second embodiment, since each member can be connected without bonding each member with an adhesive, the structure can be assembled and disassembled without using an adhesive. It can be transported in a disassembled state and assembled on site, and after use it can be disassembled and brought back, making it useful as a desk or chair suitable for outdoor use.

Further, in the corrugated cardboard assemblies according to the second and third embodiments, sufficient connection strength can be obtained even if there are no paper washers on the upper surface side of the upper cardboard plate and the lower surface side of the lower cardboard plate. Therefore, these may be eliminated.

[0058]

As it is apparent from the above description, according to the present invention, the outgoing
According to Ming, almost all of the components of the corrugated cardboard assembly are made of paper, so after use, all the components can be crushed again to be used as recycled material, easy to recycle, and As compared with the case where a special binder or a reinforcing material other than paper is used, it is possible to provide an inexpensive cardboard assembly whose manufacturing cost is greatly reduced.

Furthermore, despite the fact that almost all of the constituent members are made of paper, the connection between the corrugated board and the paper tube is devised, that is, the step surface is formed on the paper tube that is bonded or screwed to the corrugated board. Since the connection strength is increased by forming the stepped surface against a corrugated board or a paper washer, the structure is strong in spite of the simple structure.

Furthermore, since each component is manufactured using waste materials such as waste paper or recycled paper as raw materials, the manufacturing cost can be further reduced. In addition, it contributes to the suppression of environmental destruction such as deforestation of forests, the generation of toxic gas during incineration and the reduction of air pollution.

[0061]

Further, since a new corrugated board is stacked on the upper corrugated board, when the corrugated board assembly is used as a pallet, not only the product loading efficiency is improved, but also the product is stacked. Loading can be performed while dispersing the pressure, and highly reliable loading with less loading defects can be realized.

Further, since the paper frame material is mounted on the upper surface of the upper corrugated cardboard and the new corrugated cardboard, the products can be stacked in an organized state, and the load can be stably maintained with little collapse or slippage. Loading is possible. In addition, there is no need to store the product in an outer box or the like in order to stably load the products, and the outer box itself is not required. Therefore, it is possible to reduce costs and labor.

[0064] Furthermore, the lower end of the paper tube, so that so as to detachably mount the wooden leg members, never in contact with the ground the lower end of the lower corrugated plate or paper tube directly. For this reason, when the ground is wet or wet by rainwater or the like, the conventional problem that the water permeates the corrugated cardboard assembly and the strength is significantly reduced, causing collapse of the load and the like can be solved. . In addition, the pressure resistance of the paper tube can be improved, the corrugated cardboard assembly can be installed in a stable state with little shaking, and the safety can be significantly improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a corrugated cardboard assembly according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the main part of the same.

FIG. 3 is a perspective view of the same.

FIG. 4 is a perspective view of a corrugated board.

FIG. 5 is a perspective view of a paper tube.

FIG. 6 is an exploded perspective view showing a state in which a new cardboard board is stacked.

FIG. 7 is a longitudinal sectional view showing a state where the paper tubes are connected to each other via a connecting cylinder.

FIG. 8 is a longitudinal sectional view of a main part of a cardboard assembly according to a second embodiment.

FIG. 9 is an exploded vertical sectional view of the paper tube connecting portion.

FIG. 10 is a vertical sectional view of a main part of a cardboard assembly according to a third embodiment.

[Explanation of symbols]

 (1) (70) (90) Corrugated board assembly (2) (71) Upper corrugated board (3) (72) Lower corrugated board (4) (75) (91) Paper tube (6) (73) Through hole (7) (76) (92) Step surface (8) (77) (93) Small diameter part (80) (96) Paper washer (31) Top plate (40) Wooden leg material (50) New cardboard Board (51) Paper frame material (53) Connection paper tube (63) Product storage part (74) Screw for through hole (78) Screw for small diameter part (79) Screw for paper washer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 48-95356 (JP, U) JP-A 61-5723 (JP, U) JP-A 5-62431 (JP, U) JP-A 51- 26661 (JP, U) Hikaru Hei 3-26735 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 19/34

Claims (9)

(57) [Claims] An upper and lower corrugated board, and a plurality of paper tubes connecting the upper and lower corrugated boards , wherein a small diameter portion formed at the upper and lower ends of the paper tube via a stepped surface is formed by the upper and lower corrugated boards. Each of the cardboards is inserted into a through-hole for inserting a paper tube formed in the cardboard plate, and the stepped surface of the paper tube is brought into contact with the lower surface of the upper cardboard plate and the upper surface of the lower cardboard plate. Board and paper tube bonded together with adhesive
Cardboard assembly and the upper side of this cardboard assembly
With a space for storing articles
Composed of a new cardboard board to be stacked, a cardboard group
The upper small-diameter part of the paper tube in the three-dimensional
And extend it to a new corrugated board.
Connection paper tubes were held through and extended above them
Fit the small diameter part and the lower end of the connection paper tube
The structure of a corrugated cardboard assembly characterized in that it is detachably connected via a connecting cylinder . 2. The structure of a corrugated board assembly according to claim 1, wherein said corrugated board and the paper tube are manufactured from waste materials such as waste paper or recycled paper. 3. A pair of upper and lower corrugated cardboard plates, and a plurality of paper tube for connecting the upper and lower corrugated cardboard plate, the small diameter portion of the threaded formed through a stepped surface on the lower end portion of the paper tube, The upper and lower cardboard plates are screwed into threaded through holes for inserting a paper tube respectively formed on the upper and lower cardboard plates, and at least on the lower diameter side of the upper cardboard plate and the small diameter portion of the paper tube on the upper side of the lower cardboard plate. A cardboard assembly formed by screwing a threaded paper washer and bringing the threaded paper washer into contact with the stepped surface of the paper tube;
The upper corrugated board of the ball assembly is
New corrugated boards that are stacked at intervals
Small diameter part on the upper side of the paper tube in the cardboard assembly
Extend above the upper corrugated board.
Then, let the connection paper tube pass through a new cardboard board and hold it,
The small-diameter part extended above them and the lower end of the connection paper tube
Can be attached and detached via a connecting cylinder that fits over these
A structure of a corrugated cardboard assembly, wherein the structure is connected to a corrugated cardboard. 4. The structure of a corrugated cardboard assembly according to claim 3, wherein said corrugated board, paper tube, and paper washer are integrally bonded by an adhesive. 5. A pair of upper and lower corrugated cardboard plates, and a plurality of paper tube for connecting the upper and lower corrugated cardboard plate, a small diameter portion formed over a stepped surface on the lower end portion of the paper tube, the upper and lower The paper washer is inserted into a through hole for inserting a paper tube formed in each of the corrugated cardboard plates, and a paper washer is fitted over a small diameter portion of the paper tube at least on a lower surface side of the upper corrugated cardboard and an upper surface of the lower corrugated cardboard plate. At the same time, the paper washer is brought into contact with the step surface of the paper tube, and in this state, the corrugated board, paper tube, and paper washer are integrally bonded by an adhesive , cardboard
The corrugated board at the top of the assembly is
With a new cardboard board that is stacked at intervals
The small diameter part on the upper side of the paper tube in the cardboard assembly.
Extend above the corrugated board on the side
Paper tube through a flexible cardboard board, and
The small-diameter part extended toward the
Removably connected via a connecting cylinder fitted over the
Structure of cardboard assembly, characterized in that the. 6. The structure of a corrugated board assembly according to claim 3, wherein said corrugated board, paper tube, and paper washer are manufactured from waste materials such as waste paper or recycled paper. 7. A box-shaped paper frame material having a plurality of product storage sections formed thereon is attached to the upper surface of the upper corrugated board and the new corrugated board .
The structure of the cardboard assembly according to any one of the above . The lower end of wherein said paper tube, serial to any one of claims 1 to 7 so as to removably mount the wooden leg members
The structure of the on- board cardboard assembly. 9. A gap of the upper and lower corrugated plates, by an insertion portion for inserting the forks of a forklift, any one of claims 1 to 8 were to be used as a pallet carried by the forklift The structure of the corrugated cardboard assembly according to Claim 1.