JPH07330035A - Corner pad made of corrugated fiberboard - Google Patents

Abstract

PURPOSE:To effectively buffer an impact caused to a package when it is dropped from a corner by means of a new corner pad. CONSTITUTION:A corner pad 1 is assembled of twelve sections of plates which communicate in a single body when expanded. The corner pad 1 comprises three cushioning bodies 2, 3, 4 when it is assembled. Each cushioning body 2, 3, 4 comprises four predetermined plates, and their thickness is equal to one another. The corner pad 1 is assembled by folding all of the respective plates into acute angles. Therefore, semi-cutting is not used, so that strength improve at a corner and a ridge of the corner pad 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner pad to be mounted between an outer case such as a cardboard box and an item housed in the outer case.

[0002]

2. Description of the Related Art For example, in a package in which household air conditioners, home appliances such as microwave ovens, precision instruments such as microscopes, electronic instruments such as oscilloscopes (hereinafter referred to as items to be packaged) are stored, It is common practice to provide a cushioning member such as a corner pad or a side pad between the object to be packed and an outer case such as a cardboard. With such a cushioning member,
It is possible to prevent the shock during transportation and the load when the stacked packages are stacked from being directly transmitted to the object to be packed, and to protect the object to be packed.

As a material of the cushioning member such as the corner pad, for example, there is a material made of a synthetic resin material such as polystyrene foam, polyethylene foam and urethane foam. These materials are excellent in cushioning property, lightweight, and also excellent in shapeability, so that they can be integrally molded and are widely used as corner pads and side pads. In addition, a synthetic resin corner pad formed into a predetermined shape may be attached to a corrugated board or the like.

However, since the synthetic resin is a petroleum product, it does not corrode even if left unattended, and if it is incinerated, black smoke or a strange odor may occur, and it is difficult to properly treat it after it is used.
Also, if it is attached to a cardboard or the like, it becomes difficult to separate and collect.

For these reasons, in recent years, the demand for cushioning members made of recycled paper or cardboard made of easily recyclable paper is increasing.

13 and 14 are views showing an example of a corrugated cardboard corner pad which has been conventionally used.
In each of these drawings, (A) shows a state assembled as a corner pad, and (B) shows a state before assembly (hereinafter referred to as a developed corner pad).

The appearance shown in FIG. 13A has a triangular shape 3.
The corner pad 100 including the two buffers 101, 102 and 103 is the developed corner pad 1 shown in FIG.
Assemble from 00a. That is, first, the first plate portion 104 is folded at a right angle, and while maintaining this state, the second plate portion 105 is rotated 90 ° in the direction of arrow R1. After this, the third plate portion 1
The corner pad 100 is assembled by rotating the 06 by 90 ° so as to abut the first plate portion 104 and fixing the shape with an adhesive such as glue.

In the corner pad 110 shown in FIG. 14A, first, the first plate portion 111 of the expanded corner pad 110a shown in FIG.
After being folded until it contacts the plate portion 112, the third plate portion 1
Bend 13 toward the side that abuts the first plate portion 111 so that the angle 13 is 90 ° with respect to the second plate portion 112. At this time, the protrusion 111 a formed on the contact portion of the first plate portion 111 with the third plate portion 113 side is the concave portion 1 formed on the third plate portion 113.
The state in which the plate portions 111 and 113 are folded by being engaged with 13a is maintained. Then, the fourth plate portion 114 is bent so that the recess 114a formed in the fourth plate portion 114 and the projection 111b formed in the first plate portion 111 are engaged with each other, whereby the corner pad 110 is formed. .

[0009]

However, the corner pad 100 shown in FIG. 13 (A), which was initially described, is used.
Then, an adhesive means such as glue or an adhesive tape is required to maintain the shape. Therefore, when assembling corner pads at the packing site as needed, glue and tape must be prepared at all times.

On the other hand, in the structure shown in FIG. 14A, which will be described later, the engaging portion is provided, and the shape can be fixed without using an adhesive. However,
As can be seen from the assembly procedure, the fourth plate portion 114 is shown in FIG.
Since it is bent in the direction of the arrow R2 shown in (B), if an unreasonable force is applied to the corner pad 110 in the opposite direction to the arrow B when it is attached to the corner of the article to be packed, The corner pad 110 may be disassembled.

Further, in both of the corner pads 100 and 110, the thicknesses t1 and t of the respective cushioning bodies constituting the corner pads are set.
Since 2, t3 and t4 are not aligned, it is necessary to pay attention to the directionality when using. Therefore, the workability in the packing work is poor.

Both corner pads 100 and 110
In both cases, since the periphery of each buffer body is inclined, the sides of the upper and lower corner pads cannot be brought into contact with each other. Therefore, if the packaged items are stacked in a warehouse or during transportation, the load from the packaged items placed on the packaged items is transferred to the lower corner pad via the item to be packaged, which is not preferable. .

Further, each of the corner pads has a so-called half cut cut at the fold line portion, so that a sharp fold can be formed to assemble the corner pad having the above structure. However, in the half-cutting process, since the strengths of the corners and the ridges greatly change depending on the cutting amount during the half-cutting, it is necessary to accurately control the cutting amount, which is difficult to process.

When a half cut is made, the liner paper on one surface side is connected at this portion, and as shown in FIG. 13A, the ridge line portion after bending is Since the defective portion N where the corrugated board does not exist is generated, the ridges and corners of the corner pads 100 and 110 are extremely weak in strength. Therefore, when a large impact is applied to the corners or ridges of the outer case such as a cardboard box due to a so-called corner drop or ridge fall, there is a risk that the shock cannot be sufficiently mitigated or may be broken. . Also, with such a ridge structure, it is difficult to construct a large-sized cushioning body using a plurality of plate portions, and even if it is constructed, the corrugated cardboard missing volume at the ridge portion is large, and the object to be packed is sufficiently packed. May not be protected.

The half-cutting process is a processing means often used for processing a so-called mountain fold line portion. Therefore, if the bending direction of each plate part is not uniform,
When mountain folding is required, it can be said that the above problem, that is, the problem of insufficient strength against corner drops and ridge drops may occur.

The present invention made in view of the above problems does not require an adhesive means such as an adhesive tape when assembling a corner pad, and is used as a cushioning member when it is attached to a corner of an article to be packed. It does not disassemble, and the thickness of each cushioning body that is interposed between the outer case and the item to be packed is the same. An object of the present invention is to provide a corrugated cardboard corner pad which can be received and which effectively absorbs the impact generated at the time of corner fall or edge fall.

[0017]

According to a first aspect of the present invention, which achieves the above object, the first outer surface is in contact with one outer surface of the three outer surfaces forming the corners of the object to be packed contained in the packing material. A cushioning body, a second cushioning body in contact with another outer surface, and a third cushioning body in contact with the remaining one outer surface, wherein each cushioning body is used as an outer plate facing the packing material and the object to be packed. In a corrugated cardboard corner pad formed by stacking a plurality of corrugated board-making members including an inner plate facing each other, each of the buffer bodies is communicated with the outer plate through a communicating portion having a fold margin in the outer plate. In addition, the inner plate that is bent toward the outer plate with the communication portion as a fold, and the interposing plate that is interposed between the inner plate and the outer plate that are in the folded state are laminated to have an equal thickness. And place it on one of the buffers located along the horizontal plane. To Do remaining two cushion of at least one of the cushion, a cardboard corner pads, characterized in that the cardboard plate member eye direction is the vertical direction it is laminated.

According to a second aspect of the present invention that achieves the above object, an inner plate of one buffer body of the three buffer bodies and an outer plate of another buffer body of the other buffer body of the other buffer body are provided. While sandwiching the inner plate, by sandwiching the inner plate of the remaining cushioning body with the inner plate of the one cushioning body and the outer plate of the remaining cushioning body, the inner plates of the other cushioning body and the remaining cushioning body are separated from each other. While positioning at a predetermined position, the inner plate of the one cushioning body, the claw members respectively formed on the contact sides with the other two inner plates, to the slits formed on the other two inner plates. The corrugated cardboard corner pad according to claim 1, wherein the corrugated cardboard corner pad maintains the shape of the corrugated cardboard corner pad by engaging and positioning the inner plate of the one cushion at a predetermined position.

[0019]

The corrugated cardboard corner pad is composed of three cushioning bodies, namely, a first cushioning body, a second cushioning body and a third cushioning body. Also,
One of each buffer faces. Each buffer body is formed by stacking an outer plate, an inner plate, and an interposed plate member. When the board members made of corrugated board are laminated in this manner, the cushioning property is improved. Further, among the plate members constituting each cushioning body, the outer plate and the inner plate are communicated with each other through a communication portion having a fold margin. When the outer plate and the inner plate are to be laminated, they are mutually folded with the communicating portion as a fold. Further, no matter which buffer body is positioned along the horizontal plane, a plate member having a vertical eye direction exists in at least one of the remaining two buffer bodies.

Further, the inner plate of the other buffer body is sandwiched between the inner plate of the one buffer body and the outer plate of the other buffer body, and similarly, the inner plate of the one buffer body and the outer side of the remaining buffer body are similarly sandwiched. When the inner plate of the remaining cushioning body is sandwiched by the plate, the two inner plates are positioned at predetermined positions. Further, when the claw members formed respectively on the contact sides of the inner plate of one cushion with the other inner plates are engaged with the slits formed in the other inner plate, the inner plate of the one cushion is removed. It is positioned in place and the shape of the corrugated cardboard corner pad is maintained.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a corrugated cardboard corner pad of the embodiment, FIG. 2 is a perspective view showing an article to be packed, and FIGS. 3 (A) and 3 (B) are perspective views showing a packed state.

As shown in FIG. 2, a corrugated cardboard corner pad (hereinafter, also simply referred to as a corner pad) 1 according to the present invention is used for packing an object W to be packed such as a microwave oven. It is used by mounting it so as to cover the corners. In this state, when the article W to be packed is stored in an outer case (packing material) of a predetermined size such as a cardboard box C, FIG.
As shown in (A), since the corner pad 1 abuts on the corner of the cardboard box C which is the outer case, the article W to be packed is stored in the cardboard box C without play. Like the conventional Styrofoam pad, the pad can be fixed to the corner of the outer case in advance.

The corner pad 1 itself has a cushioning property, and the impact force applied to the corrugated cardboard box C is buffered by the corner pad 1 and transmitted to the article W to be packed. Further, when the corner pad 1 is used, a space S is formed between the article W to be packed and the corrugated cardboard box C, so that an impact force or a load applied to a position corresponding to the space S directly acts on the article W to be packed. Can be prevented. In this way, the corner pad 1 protects the article W to be packaged directly or indirectly from an external impact.

The corner pad 1 of the embodiment used in this manner is assembled from a plate-shaped corrugated paper (hereinafter referred to as a developed corner pad) 1a which is processed into a predetermined shape by punching or the like.

Therefore, first, the shape of the developed corner pad will be described. As shown in FIG. 4, the developed corner pad 1a has six plate portions 11 to 16 arranged on the right side and 6 arranged on the left side in appearance.
It is composed of a total of twelve plate parts 17 to 22 (an inner plate, an outer plate, an interposer plate, and a corrugated board member which is a generic name of these). For the sake of convenience, the right plate in the drawing is labeled as first plate, second, third ... From the top, and the left plate is labeled as the seventh plate, eighth, and third from the top. Named as 9 ...

Each plate portion is roughly formed in a quadrilateral shape, and has a valley fold line or two valley fold lines and a fold margin sandwiched between the two valley fold lines on a predetermined adjacent plate portion. The communication portions 31 to 41 are connected to each other. Then, all the valley fold lines except the valley fold line 41 that connects the third plate portion 13 and the ninth plate portion 19 located at the substantially central portion have a width perpendicular to the longitudinal direction Y of the expanded corner pad 1a. It extends in the direction X. That is, all the plate parts except the third plate part 13 and the ninth plate part 19 communicate with only the adjacent plate parts on the longitudinal direction Y side. The valley fold line is a line that is folded along the fold line and is folded inside of the mutually folded lines.

As described above, in this embodiment, the fold lines of the communicating portion are all valley fold lines. Therefore, the valley fold line can be formed in each fold line portion only by performing the pressing process along the fold line portion. That is, it is possible to easily and reliably process the folding line when punching the expanded corner pad 1a. In addition, since the half-cutting process is not used, the ridge line portion of the corner pad 1 after assembly does not have a defect N as shown in FIG. The impact force generated on the ridge can be effectively mitigated.

By forming perforations in the valley fold line portion as in the present embodiment, the valley fold can be performed more reliably. In addition, the expansion corner pad 1a includes the plate portions 11 and 2
Since the two are integrally configured, it is possible to prevent the component parts from being lost. In addition, since it is not bulky in the expanded state, it is easy to carry and has excellent handleability.

Next, each part constituting the developed corner pad will be described in detail. The corner pad 1 is shown in FIG.
As shown in FIG. 3, the three buffers 2 to 4 are in contact with the corners of the article W to be packed, and the outer plates of the buffers 2 to 4 are:
Second plate portion 12, third plate portion 13 and ninth shown in FIG.
It is composed of a plate portion 19. That is, when the unfolding corner pad 1a shown in FIG. 4 is assembled, the second plate portion 12 serves as the outer plate of the first buffer body 2, the third plate portion 13 serves as the outer plate of the second buffer body 3, and further the ninth plate portion. The plate portion 19 serves as an outer plate of the third buffer body 4.

Further, as shown in FIG. 4, the third plate portion 13
Is connected to the second plate portion 12 via the second communication portion 32 on the upper side and the ninth communication portion 41 via the eleventh communication portion 41 extending in the longitudinal direction Y.
It communicates with the plate portion 19. Both communication parts 32, 41
Are all communicating portions consisting of only one valley fold line. Further, at a position adjacent to the second communicating portion 32 of the third plate portion 13, the first claw (claw member) 5 formed on the first plate portion 11 is formed.
A second slit 52 with which 1 is engaged is formed.

Then, the respective plate portions 12, 1 which become the outer plates
3 and 19 are all on the plate part which becomes the inner plate of each buffer,
It communicates via the communication part. That is, the second plate portion 12 is connected to the first plate portion 11 via the upper first communication portion 31, and the third plate portion 13 is connected to the fourth plate portion 14 via the lower third communication portion 33. Further, the ninth plate portion 19 communicates with the tenth plate portion 20 via the eighth communication portion 38 on the lower side thereof. Each of these communicating portions 31, 33, 38 has folding margins 31a, 33a, 38a, and each folding margin width is three times the plate thickness t (see FIG. 6). Is preferred.

Of these, the first inner plate of the first buffer 2
A first claw 51 that engages with the second slit 52 of the third plate portion 13 is formed on the upper edge of the plate portion 11. A first slit 53 extending in the width direction X is formed at a position adjacent to the first claw 51. The first slit 53 is a second claw (claw member) 54 of the fourth plate portion 14.
Engage with. A second slit 55 extending in the longitudinal direction is formed at a position adjacent to the peripheral portion facing the seventh plate portion 17. The second slit 55 engages with the fourth claw (claw member) 56 of the tenth plate portion 20.

In the assembled state of the corner pad 1, the seventh plate portion (intercalation plate) 17 and the eighth plate portion (intercalation plate) are provided between the first plate portion 11 and the second plate portion 12. 18 is interposed. As shown, the eighth plate portion 18 is
The seventh plate portion 17 is in communication with the upper side of the ninth plate portion 19 via the communication portion 37, and the seventh plate portion 17 is in communication with the upper side of the eighth plate portion 18 via the sixth communication portion 36. The width of the folding margin 36a of the sixth communicating portion 36, the width of the seventh and eighth plate portions 17, 18 and the first,
It is preferable that the groove width of the first groove portion G1 formed between the second plate portions 11 and 12 is equal to the plate thickness t.

Then, the fourth plate portion 14 serving as the inner plate of the second shock absorber 3 has a fourth slit 57 which engages with the fourth claw 56 of the tenth plate portion 20, and a first slit of the first plate portion 11. A second claw 54 that engages with the first slit 53 is formed. 4th of these
The slit 57 is formed at a position adjacent to the peripheral edge portion on the tenth plate portion 20 side so as to extend in the longitudinal direction Y, and the second claw 54 is provided with the fourth plate portion 14 and the fifth plate portion 15. It is formed by cutting a substantially central portion of the folding margin of the fourth communication portion 34 that communicates with each other into a U-shape that opens upward. That is, the second claw 54 projects downward from the lower side portion of the fourth plate portion 14. Therefore, the valley fold line on the upper side of the fourth communication portion 34 is interrupted at a portion corresponding to the second claw 54 on the way.

The fifth plate portion 1 communicating with the fourth plate portion 14
The sixth plate portion 16 is in communication with the lower side of the plate 5 through the fifth communication portion 35. The folding margin 34a of the fourth communication portion 34
Is preferably twice as long as the plate thickness t, and the width of the folding margin 35a of the fifth communicating portion 35 is preferably equal to the plate thickness t. Further, since the second cushion 3 is assembled so that the sixth plate portion 16 located at the lower end is rolled up, when the corner pad 1 is assembled, the fifth plate portion 15 and the sixth plate portion 16 are It is interposed between the third plate portion 13 and the fourth plate portion 14.

Further, the tenth inner plate of the third shock absorber 4 is formed.
The plate part 20 is formed with a third claw (claw member) 58 that engages with the fourth slit 54 of the fourth plate part 14 and a fourth claw 54 that engages with the second slit 55 of the first plate part 11. Has been done. Of these, the third claw 58 is formed on a peripheral edge portion facing the fourth plate portion 14, and the fourth claw 56 is formed on the tenth plate portion 20 and the eleventh plate portion.
It is formed by cutting approximately the central portion of the folding margin 39a of the ninth communicating portion 39 communicating with the plate portion 11 into a U-shape that opens upward. That is, the fourth claw 56 is the tenth plate portion 2
0 protrudes downward from the lower side of 0. For this reason,
The valley fold line on the upper side of the ninth communicating portion 39 is on the way to the fourth claw 56.
It is interrupted at the part corresponding to.

A twelfth plate portion 22 is connected to the lower side of the eleventh plate portion 21 which communicates with the tenth plate portion 20 via a tenth communication portion 40. The width of the folding margin 39a of the ninth communicating portion 39 is preferably twice the plate thickness t, and the width of the folding margin 40a of the tenth communicating portion 40 is equal to the plate thickness t. Is preferred. In addition, the third buffer 4
Since the twelfth plate portion 22 located at the lower end portion is assembled so as to be rolled up, the eleventh plate portion 21 and the twelfth plate portion 22 are the same as the ninth plate portion 1 when the corner pad 1 is assembled.
It is interposed between the ninth and tenth plate portions 20.

The fourth to sixth plate portions 14 to 16 and the tenth portion
-The 2nd groove part G formed between the 12th board parts 20-22.
The groove width of 2 is preferably equal to the plate thickness t between the third communicating portion 33 and the eighth communicating portion 38, and below that, except for the third claw 58, the plate thickness is The length is preferably about 4 times t. Also, each claw 51, 5
The protruding lengths of 4, 56 and 58 are such that the engaging slits 52,
The depth of 53, 55, 57, that is, the plate thickness t, is preferably made equal, and the width of the slit is preferably made equal to the width of the pawl to be engaged.

5 is a developed view showing the developed corner pad 1a, like FIG. 4, and each symbol t, 2t, 3t,
The lengths indicated by 4t, A, B, and C are those of each part of the developed corner pad 1a necessary when assembling the corrugated cardboard corner pad 1 having the dimensions shown in FIG. It is a dimension.

As described above, since the corrugated cardboard corner pad 1 of the embodiment does not have the half-folded mountain fold line portion, the strength of the corner portion and the ridge portion can be secured, and the corner fall and the ridge fall The generated impact force can be effectively mitigated.

Further, since each position of the corner pad 1 is locked by the claws and slits formed at various places of the corner pad 1 and the assembled shape is maintained, the corner pad 1
The handling property of is greatly improved. In this case, since no adhesive tape or adhesive is used to lock the shape,
The assembled shape of the corner pad 1 can be locked quickly. In particular, the claws 51, 54, 56, 58 of this embodiment
Is a relatively short protrusion amount, the slits 52, 5
When the claws are engaged and locked with 3, 55, 57, the claws need only be pushed in, and locking can be performed very quickly and reliably.

Next, the assembly procedure and operation of the corner pad of the embodiment will be described. When the unfolding corner pad 1a shown in FIG. 4 is prepared, first, the seventh plate portion 17 and the sixth communicating portion 3 are
A valley fold is performed until it faces the eighth plate portion 18 communicating with each other through 6. Since the sixth communicating portion 36 has the folding allowance 36a having a width equal to the plate thickness t, the seventh plate portion 17 can be naturally bent to a position facing the eighth plate portion 18.

Then, with the seventh communication portion 37 as a fold,
The eighth plate portion 18 is valley-folded so that the facing plate portions 17 and 18 are at right angles to the ninth plate portion 19. The seventh
Since the length of the plate portion 17 in the longitudinal direction Y is shorter than the length of the eighth plate portion 18 by the plate thickness t, both plate portions 17 and 18 are
Even if is valley-folded at a right angle to the ninth plate portion 19, the edge portion of the seventh plate portion 17 does not interfere with the ninth plate portion 19.

Next, using the eleventh communicating portion 41 as a fold,
The ninth plate portion 19 is valley-folded so as to be perpendicular to the third plate portion 13 (see FIG. 6). As a result, as a result, as a result, the edge portions on the first groove portion G1 side of the facing plate portions 17 and 18 are located along the second communication portion 32. More rigorously, both plate parts 17 and 18 are located between the second communication part 32 and the third slit 52.

In this state, when the first plate portion 11 and the second plate portion 12 are valley-folded and the first claw 51 of the first plate portion 11 is engaged with the third slit 52, the four plate portions are 11, 1
The first buffer body 2 in which 2, 17, 18 are laminated is assembled (see FIG. 7). As illustrated, the thickness of the first buffer body 2 to be assembled is the thickness of four plate thicknesses. The folding margin 31a of the first communicating portion 31 is equal to the length three times the plate thickness t, and the first plate portion 11 and the second plate portion 12 can be bent without difficulty.

After the first buffer body 2 is assembled, the second buffer body 2 is then assembled.
Assemble the buffer body 3. Assembling the second buffer body 3 is extremely easy. That is, from the state shown in FIG. 7, first, the sixth plate portion 16 is valley-folded to a position facing the fifth plate portion 15 with the fifth communication portion 35 as a fold, and then the fifth plate portion 15 is formed.
By making a valley fold with the fourth communicating portion 34 as a fold, so that the sixth plate portion 16 faces the fourth plate portion 14, and subsequently, the fourth plate portion 14 is folded with a valley as the third communicating portion 33. By doing so, the fifth plate portion 15 is made to face the third plate portion 13, and the second claw 54 of the fourth plate portion 14 is attached to the first slit 53.
When engaged with, the second shock absorber 3 in which the four plate portions 13, 14, 15, 16 are laminated is assembled (see FIG. 8).

In this way, the second shock absorber 3 is assembled by laminating the respective plate portions 13, 14, 15, 16 constituting the second shock absorber 3 while sequentially winding them. As shown in the drawing, the thickness of the second shock absorber 3 to be assembled is the thickness of four plate thicknesses. In addition, each communication part 33, 34, 35
Has folding margins 33a, 34a, and 35a corresponding to the thickness that gradually increases as it is rolled up, so that each plate portion can be bent without difficulty.

When the second shock absorber 3 is assembled, the third shock absorber 4 is finally assembled. The third buffer body 4 is assembled by the same procedure as the assembly procedure of the second buffer body 3. That is, starting with the twelfth plate portion 12 located at the outermost end,
Each plate part 19, 20, 21, 22 which comprises the 3rd buffer body 4
And the third claw 58 into the fourth slit 57 and the fourth claw 56 at the same time when the winding is completed.
Is engaged with the second slit 55, the third cushioning body 4 in which four plate portions 19, 20, 21, 22 are laminated is assembled (see FIG. 1). The thickness of the third buffer body 4 is also the thickness of four plate thicknesses.

As described above, the three buffer bodies 2, 3, 4
After finishing the assembly in sequence, the corner pad 1 as shown in FIG. 1 is completed. As described above, the assembly procedure is a procedure of assembling one cushioning body and then assembling the next cushioning body, so that the corner pad 1 of the embodiment can be assembled very easily.

Further, in the corner pad 1 of this embodiment, the claw and the slit are engaged with each other to maintain the assembled shape, and the adhesive tape or the adhesive is unnecessary. Therefore, for example, it becomes possible for the person in charge of packing to assemble and use the corner pads as needed at the packing site.

Further, as can be seen from the assembly procedure, the first plate portion 11 of the first shock absorber 2 and the fourth plate portion 14 of the second shock absorber 3 are provided.
Is held by the tenth plate portion 20 of the third shock absorber 4 so as not to expand. That is, the first plate portion 11 is positioned by being sandwiched between the second plate portion 12 which is the outer plate of the first buffer body 2 and the tenth plate portion 20, and the fourth plate portion 14.
Is a third plate portion 13 which is an outer plate of the second shock absorber 3 and the first
It is positioned by being sandwiched between the zero plate portion 20. Also the first
The 0 plate portion 20 is positioned by engaging the third claw 58 with the fourth slit 57 and the fourth claw 56 with the second slit 55.

Particularly, in the corner pad 1 of this embodiment,
The object W to be packaged also has a structure that prevents the plate parts 11, 14, 20 corresponding to the inner plates from unfolding and disassembling the corner pad 1. Therefore, when used as the corner pad 1, the corner pad 1 is not disassembled.

Each of the cushioning bodies 2, 3 and 4 has the same thickness as that of four corrugated cardboard sheets, which are raw materials. Therefore, when the corner pad 1 is mounted on the corner of the article W to be packed, it is not necessary to pay attention to the direction, and the mounting workability is improved.

Further, since the corner pad 1 is assembled only by the valley fold, the ridge line is surely formed at each bending position of the corner pad 1. That is, since the half cut is not formed in the folding line portion, it is possible to prevent the corrugated board from being damaged at the ridge line portion. Therefore, not only is it extremely durable, but it effectively absorbs the impact that occurs at the corners or ridges when corners or ridges are dropped,
The object to be packed can be reliably protected.

In the corner pad 1 of the embodiment, the upper end surface (for example, FIG.
31a) is parallel to the mounting surface. Therefore, eight corner pads 1 assembled by the above-described assembly procedure are prepared and mounted on each corner of the home air conditioner W as shown in FIG. When packed in a case, the corner pads 1 located above and below are attached to the corners of the article to be packed in such a state that the adjacent upper and lower end surfaces are in contact with each other. In this way, the corner pad 1 can support a vertical load, that is, a so-called product pressure, which is generated when the packaging bodies such as the corrugated cardboard boxes C are stacked.

Particularly, in the corner pad 1 of the embodiment, even if the corner pad 1 is used in any orientation,
A plate that always has the vertical eye direction D (for example, the twelfth plate portion 22 shown in FIG. 6 has the horizontal eye direction D.) Since it exists in the part, it has higher strength against product pressure. Therefore, it is optimal as the corner pad 1 for a package such as a corrugated cardboard box C to be stacked.

That is, as can be easily understood with reference to FIGS. 1 and 6, when the first buffer body 2 is the bottom, the second buffer body 3 and the third buffer body 4 perpendicular to the mounting surface are provided. The eye directions D of all the plate parts constituting the are vertical. Also, the second
When the buffer 3 is the bottom, the eye direction D of the inner and outer plates of the first buffer 2 is vertical. When the third buffer body 4 is the bottom, the eye direction D of the plate portion inside the first buffer body 2 is vertical. Therefore, the corner pad 1 of the embodiment can always show a high strength against the compressive force in the vertical direction regardless of which direction it is used.

The corner pad 1 of the above embodiment is composed of three buffer bodies 2, 3 and 4 having substantially the same shape and size. For example, as shown in FIG. 9, two of the three buffer bodies are used. The buffer bodies 3a and 4a can be formed in a long plate shape or can be formed in different shapes from each other. The corner pad 5 shown in FIG. 9 is assembled from the expanded corner pad 5a shown in FIG. The parts common to those of the developed corner pad 1a shown in FIG. 4 are designated by the same reference numerals. As illustrated, in this case, the vertical direction Y of the plate portions 81 to 88 that form the second buffer 3a and the third buffer 4a.
The length is measured so as to correspond to the length of each buffer 3a, 4a. Further, as shown in FIG. 10, when a plurality of claw members are provided, the assembled shape can be held more reliably.

The corrugated cardboard corner pads 1 and 5 of the above embodiments are examples of the embodiments of the present invention, and can be variously modified without departing from the spirit of the present invention.

For example, the corner pads 1 of the above embodiment
In Fig. 5, the buffer bodies 2, 3, 3a, 4, 4a are configured by laminating four plate portions, but it is also possible to configure each buffer body by three plate portions, and the same operation is performed. You can assemble the corner pads that are effective.

FIG. 11 is a development view showing a development corner pad 6a used for assembling a corner pad composed of a cushioning body composed of three plate portions. As can be seen from a comparison between FIG. 11 and FIG. 4, when three cushions are laminated to form each cushion, the corner pads are first bent when assembling the cushions made up of the cushions having four slices. Although each plate portion 16, 17, 22 is not provided, the assembling method is the same. Therefore, the corner pad can be assembled more quickly.

Since the corrugated cardboard corner pads 1, 5, and 6a according to the present invention have a structure in which the respective cushioning bodies are assembled independently, the respective cushioning bodies are formed as needed within the range allowed by the shape. The number of plate portions can be easily increased to 5 or more.

Further, in the case of the first embodiment described above, FIG.
As shown in FIG. 11, a development corner pad in which the plate portions are arranged in 6 columns and 2 rows is used, but it is also possible to arrange the plate portions as shown in FIG. 12, for example.

[0064]

As described above, each of the cushioning bodies for the corrugated cardboard corner pad of the present invention has a structure in which a plurality of corrugated board members are laminated, and therefore has excellent cushioning performance.

Further, no matter which direction the corrugated cardboard corner pad is used, the eye direction is vertical to at least one of the two buffers which are perpendicular to the buffer located along the horizontal plane. Since there is a plate portion that is formed, high strength can be exerted against a vertical load, that is, a product pressure.

In addition, the inner plate of the one buffer body and the outer plate of the other buffer body sandwich the inner plate of the other buffer body, and the inner plate of the one buffer body and the outer plate of the remaining buffer body. By sandwiching the inner plate of the remaining buffer, by positioning each inner plate of the other buffer and the remaining buffer at a predetermined position, a claw member formed on the inner plate of one buffer, The inner plate of one shock absorber is positioned at a predetermined position by engaging with the slits formed on the other two inner plates, so the inner plate expands and assembles when mounted on the packaged object. The condition does not decompose.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a corrugated cardboard corner pad according to the present invention.

FIG. 2 is a perspective view showing an object to be packed.

FIG. 3A and FIG. 3B are perspective views showing a state in which items to be packed are packed in an outer case.

4 is a plan view showing a developed corner pad before assembling the corrugated cardboard corner pad shown in FIG. 1. FIG.

5 is a plan view showing the dimensioning of the developed corrugated cardboard corner pad shown in FIG. 4. FIG.

FIG. 6 is a perspective view showing a state in which the unfolding corner pad is being assembled.

FIG. 7 is a perspective view showing a state in the middle of assembling the deployment corner pad.

FIG. 8 is a perspective view showing a state in the middle of assembling the deployment corner pad.

FIG. 9 is a perspective view showing another aspect of one embodiment of the corrugated board corner pad according to the present invention.

10 is a plan view showing a developed state of the corrugated cardboard corner pad of FIG. 8. FIG.

FIG. 11 is a plan view showing a developed state of a corrugated cardboard corner pad according to still another aspect of the present invention.

FIG. 12 is a plan view showing another aspect of the corrugated cardboard corner pad of FIG. 1 in a developed state.

FIG. 13A is a perspective view showing a conventionally used corner pad, and FIG. 13B is a plan view showing a developed state.

FIG. 14 (A) is a perspective view showing another conventionally used corner pad, and FIG. 14 (B) is a plan view showing a developed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Corrugated cardboard corner pad, 1a ... Expanded corrugated cardboard corner pad, 2 ... 1st buffer body, 3 ... 2nd buffer body, 4 ... 3rd buffer body, 11-22 ... 1st plate part-12th plate part, 31- 41 ... 1st communicating part-11th communicating part.

Claims (2)

[Claims] 1. A first shock absorber that contacts one outer surface of three outer surfaces that form the corners of an object to be packed (W) housed in a packing material (C).
(2), a second shock absorber (3) in contact with another outer surface, and a third shock absorber (4) in contact with the remaining outer surface, each of the shock absorbers
(2,3,4) includes an outer plate (12,13,19) facing the packing material (C) and an inner plate (11,14,20) facing the object to be packed (W). In a corrugated cardboard corner pad (1) configured by laminating a plurality of corrugated board members (11 to 22), each of the buffer bodies (2,3,4), the outer plate (12,13,19), Communication part (31, 33, 38) with folding margins (31a, 33a, 38a) on the outer plate
The inner plate (11, 11, which is connected to the outer plate (11, 13, 19) while being communicated via
14,20), and the intermediate plate (15,16,17,) interposed between the inner plate (11,14,20) and the outer plate (12,13,19) in the bent state.
(18,21,22) are laminated to form the same thickness, and one of the buffers (2,3,4) located along the horizontal plane.
At least one of the two remaining cushions perpendicular to the vertical direction has a corrugated board member (11) having a vertical direction (D).
~ 22) is laminated, corrugated cardboard corner pad. 2. A buffer (4) of the three buffers (2,3,4)
The inner plate (20) of the other cushioning body (2) and the outer plate (12) of the other cushioning body (2) sandwich the inner plate (11) of the other cushioning body (2), and The inner plate (20) and the outer plate (13) of the remaining cushioning body (3) sandwich the inner plate (14) of the remaining cushioning body (3) so that the remaining cushioning body (2) and the remaining cushioning body (2) remain. Inner plates (11, 14) of the buffer (3)
While positioning at a predetermined position, the one shock absorber (4)
The claw members (56, 58) respectively formed on the sides of the inner plate (20) of the above that contact the other two inner plates (11, 14) are attached to the other two inner plates (11, 14). Maintaining the shape of the corrugated cardboard corner pad (1) by engaging the formed slits (55, 57) and positioning the inner plate (20) of the shock absorber (4) at a predetermined position. The corrugated cardboard corner pad (1) according to claim 1, characterized in that.