JP4799194B2 - Buffer unit - Google Patents

Description

The present invention relates to a buffer unit having a cylindrical cushioning material formed by bending a sheet-like member, for example, a paperboard or a corrugated cardboard sheet, and more specifically, the cushioning unit having a cushioning material that eliminates the need for cushioning and raising. Concerning.

  In cushioning materials made by bending paperboard and corrugated cardboard sheets, a technology is known to secure a cushioning space between the product and the outer box by providing a plate-like projection on the cushioning material and stretching it. (For example, refer to Patent Document 1).

  FIG. 7 shows an example of such a cushioning material formed in a cylindrical shape (sleeve shape). The cushioning material 50 shown in the figure is configured in a rectangular tube shape having four side portions 51, 52, 53, 54 that are long in the Y-axis direction (see the coordinates at the upper left). From the upper side 53, four cut-ups 55, 56, 57, 58 project upward, and from the lower side 51, there are also four (but only two shown) cuts. Raises 61 and 62 project downward. In addition, two cut-ups 63 and 64 protrude from the right side portion 52 toward the right side, and two (but only one of them) are cut out from the left side portion 54. A shim 65 is provided projecting leftward. Of these cutting and raising, the cutting and raising 55-58, 61, 62, etc. are responsible for buffering in the Z-axis direction, and the cutting and raising 63-65 are responsible for buffering in the X-axis direction. And the sleeve part 66 which consists of four side parts 51-54 handles the buffer of a Y direction.

JP 2000-255559 A

  However, the cushioning material 50 as shown in FIG. 7 has a problem that it is easy to break because the cut and raised portions are each projected in a thin plate shape having the same thickness as the material. In addition, since the notch after the erection is erected remains in the sleeve portion 66, the X direction, the Y axis direction, and the Z axis direction are compared with the case where these notches are not provided. However, there is a problem that the strength decreases. Furthermore, when the length of the sleeve portion 66 in the Y-axis direction is short, it may be difficult to provide the cut and raised, and in this case, there is a problem that the buffer performance is lowered. Furthermore, when these cut-ups are provided, there is a problem that there are many design restrictions on the size, position, and the like.

It is an object of the present invention to provide a buffer unit having a buffer material that does not require cutting and is strong in strength, can secure sufficient buffer performance, and has few design restrictions. .

The invention according to claim 1 is characterized in that the sheet-like member in a state of being developed on the XY plane of the XYZ space is Y by a plurality of planar portions formed by sequentially bending the sheet-like member along a plurality of folding lines parallel to the Y axis. The present invention relates to a buffer unit configured by combining a rectangular cylindrical buffer material for buffering in the axial direction and a cylindrical frame member. In this invention,
The cushioning material includes a first inclined portion and a second inclined portion that intersect with each other at the top to form a mountain shape, a proximal end side is folded inward at a skirt portion of the first inclined portion, and a distal end side is the first inclined portion A first folded portion that rises to the middle of the first inclined portion along the back surface of the portion, a proximal end side is folded inward at a skirt portion of the second inclined portion, and a distal end side is along the back surface of the second inclined portion A second folded portion that rises up to the middle of the second inclined portion; and a connecting portion that connects a distal end side of the first folded portion and a distal end side of the second folded portion, the first inclined portion and the first The article storage space is configured in a region surrounded by the two inclined portions and the connecting portion, and the buffering in the Z-axis direction is performed by a portion located near the top of the first inclined portion and the second inclined portion, The first inclined part and the first folded part are A first leg portion constructed so, by the second inclined portion and the second leg portion configured the second folded portion overlaps, adapted to perform buffering of the X-axis direction and the Z-axis direction ing.
Further, the frame member is configured to be in contact with the top portion of the cushioning material, the skirt portion of the first inclined portion, and the skirt portion of the second inclined portion from the outside to regulate the position.

The invention according to claim 2 is the shock-absorbing unit according to claim 1, characterized in that the top portion of the shock-absorbing material has a flat portion.

According to a third aspect of the present invention, in the shock-absorbing unit according to the first or second aspect, the frame member is formed in a square tube shape, and the skirt of the first inclined portion and the skirt of the second inclined portion Each of which has a first side portion that has corners that contact each other from the inside, and a second side portion that is disposed opposite to the first side portion and that the top portion contacts from the inside.

According to the first aspect of the present invention, the cushioning material includes the first inclined portion, the second inclined portion, the first folded portion, the second folded portion, and the connecting portion, and thereby the Y-axis direction (folding curve direction). ) Is substantially “A” -shaped. Therefore, it is difficult to deform with respect to an external force as compared with this shape itself, for example, a quadrangle. Further, the vicinity of the top portion that performs buffering in the Z-axis direction is configured by the first inclined portion and the second inclined portion, and the first leg portion and the second leg portion that perform buffering in the X-axis direction and the Z-axis direction are the former. The first inclined portion and the first folded portion overlap each other, and the latter is configured by the second inclined portion and the second folded portion overlapped. Thus, since the part which buffers is formed in double, sufficient buffering performance can be exhibited with respect to the X-axis direction and the Z-axis direction. In addition, the top vicinity of the first inclined portion and the second inclined portion, the first leg portion, and the second leg portion can be formed over the entire length in the Y-axis direction, unlike cutting and raising. In addition, the buffer performance can be improved. In addition, unlike the case where the cut-ups are provided, the cutout is not formed, so that a decrease in strength due to the formation of the cutout can be prevented, and there are few design restrictions. Become. In addition, since the lengths of the first leg portion and the second leg portion can be easily changed, it is possible to easily secure the required size of the buffer space by changing these lengths. The buffer unit according to the present invention, which is configured by combining the above-described buffer material and the frame member that regulates the top portion, the bottom portion of the first inclined portion, and the bottom portion of the second inclined portion from the outside, The buffer performance in the X-axis direction and the Z-axis direction of the material can be further enhanced.

  According to invention of Claim 2, since the top part is formed flat, the buffer performance of a Z-axis direction can be improved compared with the case where the top part is comprised at the acute angle.

According to the invention of claim 3 , since the frame member is formed in a square cylinder shape, the cushioning material and the frame member act so as to prevent deformation of the counterpart X-axis direction and Z-axis direction, respectively. Together, both can improve the buffer performance in the X-axis direction and the Z-axis direction.

  When the length of the frame member in the Y-axis direction is set to be the same as the length of the buffer material in the Y-axis direction, the buffer performance in the Y-axis direction can be improved by both.

  Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a cushioning material 1 according to the present invention. Here, in the following description, the directions indicated by the arrows on the upper left of the figure are the X-axis direction (left-right direction), the Y-axis direction (front-rear direction), and the Z-axis direction (up-down direction), respectively. Note that these are set for convenience of explanation, and the present invention can of course be achieved even when the directions are appropriately changed.

  FIG. 1 is a perspective view of a cushioning material 1 according to the present invention as viewed from the front right and diagonally upward. As shown in the figure, the cushioning material 1 includes a first inclined portion 11, a second inclined portion 12, a first folded portion 13, a second folded portion 14, and a connecting portion 15, all of which are thin plate-like. These are a plurality of planar portions formed by sequentially bending the sheet-like member S in a state developed on the XY plane shown in FIG. 2 along a plurality of folding lines parallel to the Y axis. That is, the sheet-like member S can be configured to be folded at a folding line L1, folded at a folding line L2, folded at a folding line L3, and folded at a folding line L4. Here, as the sheet-like member S, paperboard such as cardboard and laminated paper, and corrugated cardboard sheets can be used. In addition, when using a corrugated cardboard sheet, whether the direction of the wave of the core is directed in the X-axis direction or the Y-axis direction depends on the magnitude and direction of the force acting on the cushioning material 1 It shall be determined as appropriate. In the present embodiment, a case where the X-axis direction is directed will be described as an example.

  When the cushioning material 1 shown in FIG. 1 is configured with the sheet-like member S shown in FIG. 2, the upper end of the first inclined portion 11 and the upper end of the second inclined portion 12 in FIG. Although a cylindrical closed loop is configured, this connecting portion may be another location, and an overlapping portion (not shown) may be provided in the connecting portion. In the following, illustration and description of the connecting portion are omitted.

  As shown in FIG. 1, the first inclined portion 11 and the second inclined portion 12 intersect with each other at the upper end side to form a top portion 16. The angle α formed by the first inclined portion 11 and the second inclined portion 12 in the top portion 16 is set according to the size of the article W stored in the article storage space R described later, or the cushioning performance in the vertical and horizontal directions. It shall be. Moreover, although the length along the inclination direction of the 1st inclination part 11 and the 2nd inclination part 12 may be the same or may differ, this embodiment demonstrates the case where it is the same. To do.

  As shown in FIG. 1, the first folded portion 13 has a proximal end side 13 a folded back inward (back side) at a skirt portion 17 corresponding to the lower end portion of the first inclined portion, and a distal end side 13 b of the first folded portion 13. The first inclined portion 11 is configured to rise up to the middle of the first inclined portion 11 along the back surface 11a. The same applies to the second folded portion 14. That is, the second folded portion 14 has a proximal end side 14 a folded back inward (back side) at a skirt portion 18 corresponding to the lower end portion of the second inclined portion 12, and a distal end side 14 b being the second inclined portion 12. It is comprised so that it may stand up to the middle of the 2nd inclination part 12 along the back surface 12a.

The connecting portion 15 is disposed so as to connect the distal end side 13b of the first folded portion 13 and the distal end side 14b of the second folded portion 14 described above. In addition, although the example shown to the figure demonstrates the case where the connection part 15 becomes horizontal, the connection part 15 is comprised so that it may incline according to the shape of the articles | goods W accommodated in the article | item storage space R. May be. In this case, what is necessary is just to make it the length of the 1st folding | turning part 13 and the 2nd folding | turning part 14 along an inclination direction differ.

  As shown in FIG. 1, an article storage space R is formed above the connecting portion 15. The article storage space R is a triangle surrounded by a portion located on the top 16 side of the first inclined portion 11, a portion located on the top 16 side of the second inclined portion 12, and the connecting portion 15. Consists of a columnar space. In the figure, an example is shown in which a rectangular columnar article W (shown by a two-dot chain line) is stored in the article storage space R. The article W has one surface in contact with the upper surface of the connecting portion 15 and two upper corner portions in contact with the back surface 11a of the first inclined portion 11 and the back surface 12a of the second inclined portion 12, respectively. It is stored. In the figure, for convenience of explanation, the front end of the article W is illustrated so as to coincide with the front end of the cushioning material 1, but actually, in order to perform buffering in the Y direction with respect to the article W, The front end and the rear end are respectively arranged at positions inside the front end and the rear end of the cushioning material 1. This also applies to FIGS. 4 and 5 described later.

  As shown in FIG. 1, a space is formed between the upper end of the article W and the top portion 16. The part corresponding to this space in the first inclined part and the second inclined part is responsible for buffering in the vertical direction (Z-axis direction). That is, the buffering in the Z-axis direction is performed by the portion of the first inclined portion 11 and the second inclined portion 12 that is located near the top portion 16. Since this part has the 1st inclination part 11 and the 2nd inclination part 12 cross | intersected in wedge shape, it is excellent in the buffering performance compared with the conventional cutting and raising.

  As shown in FIG. 1, the 1st leg part 21 and the 2nd leg part 22 are comprised by the skirt part 17 side of the 1st inclination part 11, and the skirt part 18 side of the 2nd inclination part 12, respectively. The first leg portion 21 is configured such that a portion located on the skirt portion 17 side of the first inclined portion 11 and the first folded portion 13 overlap each other. Similarly, the second leg portion 22 is configured by overlapping the portion located on the skirt portion 18 side of the second inclined portion 12 and the second folded portion 14. The first leg portion 21 and the second leg portion 22 perform buffering of the article W in the left-right direction (X-axis direction) and the up-down direction (Z-axis direction).

  FIG. 3 shows an example of use of the buffer material 1 described above. In this example, five cushioning materials 1 each containing articles W are arranged and stored in a large box B. The five cushioning materials 1 are alternately arranged upside down to increase space efficiency.

The cushioning material 1 having the above configuration has the following effects.
(1) Since the cross-sectional shape viewed from the front is formed in a substantially “A” shape, that is, a combination of triangles, this shape itself, compared with the cushioning material 50 whose cross-sectional shape shown in FIG. Difficult to deform.
(2) The double structure of the sheet-like member S in which the vicinity of the top portion 16 responsible for the up-and-down cushioning, and the first leg portion 21 and the second leg portion 22 responsible for the up-down and left-right cushioning are both materials. Therefore, unlike cutting and raising, it is strong in strength, and therefore the buffering performance can be remarkably improved.
(3) Since the vicinity of the top portion 16 of the first inclined portion 11 and the second inclined portion 12, the first leg portion 21, and the second leg portion 22 can be formed over the entire length in the front-rear direction (Y-axis direction), It is possible to improve the buffering performance against the cut-and-raise that can be provided only partially due to restrictions on the configuration.
(4) In the case of providing the cut and raised, a notch is formed accordingly, but in this embodiment, the notch is not formed, so that the strength of the entire cushioning material 1 can be maintained. it can.
(5) Although the cutting and raising are greatly restricted in design in terms of size and arrangement position, this embodiment has a high degree of design freedom.

  FIG. 4 shows another cushioning material 2. In addition, about the structure similar to the shock absorbing material 1 shown in FIG. 1, the same code | symbol is attached | subjected and the duplication description is abbreviate | omitted. The figure is a perspective view of the cushioning material 2 as viewed from the upper front diagonally right. As shown in the figure, in the cushioning material 2, a flat portion 23 is provided at the top portion 16 where the first inclined portion 11 and the second inclined portion 12 intersect. Thus, when the flat part 23 is provided, since the load from upper direction can be received in a wide area, the buffering performance with respect to the load from above can be improved.

  FIG. 5 shows still another cushioning material 3. This figure is a perspective view of the cushioning material 3 as viewed from the front right and diagonally upward. However, the state which fractured | ruptured some of the 2nd inclination parts 12 is shown in the rear end side. The cushioning material 3 shown in the figure is a modification of the cushioning material 2 shown in FIG. That is, the high cut portions 24 and 25 are provided on the front end side and the rear end side, respectively, in the top portion 16 where the first inclined portion 11 and the second inclined portion 12 intersect. Further, a high cut portion 26 is provided on the rear end side of the connecting portion 15. The high cut portion 24 on the front end side of the top portion is formed by bending a portion of the first inclined portion 11 near the top portion 16 inwardly in a “<” shape. The same applies to the high cut portion 25 on the rear end side of the top portion 16. That is, it is formed by bending a portion located near the top 16 of the second inclined portion 12 inwardly in a “<” shape. The high cut portion 26 provided on the rear end side of the connecting portion 15 is configured so that the first end portion 13, the connecting portion 15, and the rear end portion of the second return portion 14 are trapezoidal on the front end side. Instead of, it is configured in a triangular shape. The high cut portions 24 and 25 improve the buffer performance in the front-rear direction (Y-axis direction) and the vertical direction (Z-axis direction), and the high cut portion 26 improves the buffer performance in the front-rear direction (Y-axis direction). .

  As shown in FIG. 5, in the cushioning material 3, the engaging portion 27 protrudes to the right at substantially the center in the front-rear direction and the up-down direction of the second inclined portion 12. The engaging portion 27 cuts and raises a part of the second folded portion 14 horizontally, and from the rear surface 12a side to the front surface side of the second inclined portion 12 with respect to a slit (not shown) provided in the second inclined portion 12. It is made to penetrate. The engaging portion 27 is formed to have a wide tip end side, and this portion engages with the second inclined portion 12. The engaging portion 27 is for preventing the second inclined portion 12 from opening outward. Similarly, an engaging portion (not shown) is also provided on the first inclined portion 11 side.

  FIG. 6 shows a shock absorbing unit 30 configured by combining the shock absorbing material 3 shown in FIG. 5 and the frame member 28. The figure is a view of the buffer unit 30 as viewed from the front. The frame member shown in the figure is formed in a rectangular tube shape having four side portions 31, 32, 33, 34, and the length in the front-rear direction is set to be the same as that of the cushioning material 3. The cushioning material 3 is arranged so as to be inscribed inside the frame member 28. The cushioning material 3 is in a state of being tightened from the outside by the frame member 28. That is, among the four side portions 31, 32, 33, and 34 of the frame member 28, the skirt portion 17 of the first inclined portion 11 is formed from the inside at the left corner portion 35 of the side portion 31 that is positioned below in FIG. The skirt 18 of the second inclined portion 12 is in contact with the right corner 36 from the inside. Further, the flat portion 23 of the top portion 16 of the cushioning material 3 is in contact with substantially the center of the back surface of the side portion 33 located above. In the example shown in FIG. 6, the cushioning material 3 and the frame member 28 are configured such that one is prevented from being deformed by the other. That is, the frame member 28 reinforces the buffer member 3, while the buffer member 3 reinforces the frame member 28. Therefore, as the buffer unit 30 including the buffer material 3 and the frame member 28, the buffer material can be used in any of the left-right direction (X-axis direction), the front-rear direction (Y-axis direction), and the vertical direction (Z-axis direction). As compared with the case of 3 or the frame member 28 alone, the buffering performance can be greatly improved. In the example shown in FIG. 6, the engaging portion 27 as shown in FIG. 5 is not necessary.

  Here, the shape of the frame member 28 is not limited to the above-described rectangular tube shape. If the frame member 28 can maintain the relationship that the shape of the cushioning material 3 is regulated and the cushioning material 3 regulates the shape of the frame member 28, for example, a triangular tube shape is adopted. Is also possible. In the relationship with FIG. 6, assuming a triangle with a cross-sectional shape in which the base is located at the top and the vertex is located at the bottom, the flat portion 23 of the top 16 of the cushioning material 3 abuts the bottom from the inside, and the remaining two sides The bottom 17 of the first leg 11 and the bottom 18 of the second leg 12 are in contact with each other. The frame member can also be a triangular cylinder having such a cross-sectional shape.

Slow shock unit of the present invention can be used as a gentle shock unit to use in accommodating the article inside, without being limited thereto, for example, when the packaging articles in an outer packaging, It can be used widely as a loose opposition units to be inserted between the article and an outer box.

It is the perspective view which looked at the shock absorbing material from the front right diagonal upper direction. It is a figure which shows the state which expand | deployed the shock absorbing material on XY plane. It is a figure explaining the usage example of a shock absorbing material. It is the perspective view which looked at another buffer material from the front right diagonal upper direction. It is the perspective view which looked at another buffer material from the front right diagonal upper direction. It is the figure which looked at the buffer unit comprised by the buffer material and the frame member from the front. It is the perspective view which looked at the conventional shock absorbing material from the front right diagonal upper direction.

Explanation of symbols

    1, 2, 3 ... Buffer material, 11 ... First inclined part, 12 ... Second inclined part, 13 ... First folded part, 13a ... Base end side of first folded part, 13b ... First 1 fold end portion, 14... Second fold portion, 14 a... Second fold portion proximal end side, 14 b. ...... Bottom portion of first inclined portion, 18 ...... Bottom portion of second inclined portion, 21 ...... First leg portion, 22 ...... Second leg portion, 23 ...... Flat portion, 28 ...... Frame member, 30 ...... Buffer unit, 31 ...... Side (first side), 33 ...... Side (second side)

Claims (3)

A rectangular tube that cushions in the Y-axis direction by a plurality of planar portions formed by sequentially bending a sheet-like member developed on the XY plane of the XYZ space along a plurality of folding lines parallel to the Y axis. A buffer unit configured by combining a cylindrical buffer member and a cylindrical frame member,
The cushioning material is
A first inclined portion and a second inclined portion that cross each other at the top to form a mountain shape;
A first folded portion where a proximal end is folded inward at a skirt portion of the first inclined portion, and a distal end side rises to the middle of the first inclined portion along the back surface of the first inclined portion;
A second folded portion where the proximal end is folded inward at the bottom of the second inclined portion, and the distal end side rises to the middle of the second inclined portion along the back surface of the second inclined portion;
A connecting portion that connects the distal end side of the first folded portion and the distal end side of the second folded portion;
An article storage space is configured in a region surrounded by the first inclined portion, the second inclined portion, and the connecting portion,
Buffering in the Z-axis direction is performed by a portion located near the top of the first inclined portion and the second inclined portion,
The first leg portion configured by overlapping the first inclined portion and the first folded portion, and the second leg portion configured by overlapping the second inclined portion and the second folded portion, X It is designed to perform buffering in the axial direction and the Z-axis direction ,
The frame member is
The top of the cushioning material, the skirt of the first inclined portion, and the skirt of the second inclined portion are in contact with the skirt from the outside to regulate the position.
A buffer unit characterized by that. The top of the cushioning material has a flat portion;
The buffer unit according to claim 1. The frame member is formed in a square tube shape, and a first side portion having corner portions at both ends with which a skirt portion of the first inclined portion and a skirt portion of the second inclined portion abut each other from the inside; A second side portion disposed opposite to the first side portion and abutting the top portion from the inside;
  The buffer unit according to claim 1 or 2, wherein

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