JP2019156451A - Buffer structure, cushioning member and packing box - Google Patents

Abstract

To provide a buffer structure that can secure stable buffer properties.SOLUTION: A buffer structure 26 which includes a pair of pressure receiving walls 21 connected to both end parts of a buffer wall 20 and makes the pair of pressure receiving walls 21 face each other across a buffer space S includes: a pair of buffer fold lines L5 which are inclined and formed in parallel to each other so as to intersect each of virtual boundary lines that are set linearly between the buffer wall 20 and each of the pressure receiving walls 21; a pair of cutting lines CL which are formed in parallel to each other so as to connect both sides of the pair of buffer fold lines L5; and an auxiliary fold line L6 which is formed in a state of being inclined in the opposite direction to the buffer fold line L5 at a buffer surface part 30 surrounded by the pair of buffer fold lines L5 and the pair of cutting lines CL. In a state where the buffer space S is formed, the buffer surface part 30 becomes folded along the auxiliary fold line L6, and a pair of buffer claws 32 inclined in opposite directions of each other with respect to the pressure receiving wall 21 around the auxiliary fold line L6 are formed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a buffer structure, a buffer member, and a packaging box.

  A buffer structure for protecting a commodity stored in a packaging box is known.

  For example, the cushioning structure of the corrugated cardboard packaging material described in Patent Document 1 has a plurality of longitudinal cuts formed in the corrugated cardboard sheet, and a portion shifted in a staggered manner from the reference position so as to connect these longitudinal cuts, and there is no deviation. Two transverse folds having a portion. In this shock absorbing structure, the corrugated cardboard sheet is folded back along the transverse folds to form shock absorbing claws that are inclined with respect to the pressure receiving surface and right-angle walls that are perpendicular to the pressure receiving surface. In this buffer structure, since the space between the upper and lower pressure receiving surfaces is held by the buffer claw and the right-angle wall, an appropriate buffer property can be obtained.

Japanese Patent No. 3291290

  Since one buffer claw inclined in one direction like the above-described buffer structure is easily crushed in one direction, the pressure receiving surface cannot be appropriately held by only one buffer claw. With respect to such a problem, in the above-described buffer structure, a plurality of buffer claws are arranged side by side, and adjacent buffer claws are inclined in the reverse direction. However, since the buffer claws having different inclination directions are crushed in different directions, the holding force of the pressure receiving surface may not be constant. As a result, with the above-described buffer structure, it may be difficult to ensure stable buffer properties.

  In order to solve the above-described problems, the present invention provides a buffer structure, a buffer member, and a packaging box that can ensure a stable buffer property.

  In order to achieve the above-mentioned object, the present invention includes a pair of pressure receiving walls connected to both ends of the buffer wall, and a buffer structure in which the pair of pressure receiving walls are opposed to each other with a buffer space interposed therebetween, A pair of folding lines that are formed to be parallel to each other so as to intersect each virtual boundary line that is linearly set between the buffer wall and each of the pressure receiving walls; and In a state where the fold line is inclined in the opposite direction to the buffer surface portion surrounded by the pair of cutting lines formed parallel to each other so as to connect both sides, and the pair of fold lines and the pair of cutting lines. An auxiliary fold line formed, and in the state where the buffer space is formed by bending the pair of pressure receiving walls to one side along the pair of fold lines, the buffer surface portion protrudes to the other side. The auxiliary fold is in a state of being folded along the fold line. Forming a pair of buffer claws inclined in opposite directions with respect to the pressure receiving wall around the.

  In this case, the auxiliary folding line is arranged so as to bisect the buffer surface portion, and each of the buffer claws protrudes outward from a diagonal portion positioned between the pair of virtual boundary lines. It is preferable that the diagonal portion located outside the virtual boundary line is drawn inward to form an inclination.

  In this case, it is preferable that a portion of the buffer wall excluding the buffer surface portion forms an elevation surface portion orthogonal to the pressure receiving wall.

  In order to achieve the above-described object, the shock-absorbing member of the present invention includes any of the shock-absorbing structures described above.

  In order to achieve the above-described object, the packaging box of the present invention includes any of the above-described buffer structures or the above-described buffer members.

  According to the present invention, stable buffering properties can be ensured.

It is a perspective view which shows the packaging box which concerns on one Embodiment of this invention. It is II-II sectional drawing of FIG. It is a disassembled perspective view which shows the packaging box and buffer member which concern on one Embodiment of this invention. It is a top view which shows the blank of the packaging box which concerns on one Embodiment of this invention. It is a top view which shows the blank of the buffer member which concerns on one Embodiment of this invention. It is a perspective view showing a buffer member concerning one embodiment of the present invention. It is a top view which shows the blank of the buffer member which concerns on the 1st modification of one Embodiment of this invention. It is a top view which shows the blank of the buffer member which concerns on the 2nd modification of one Embodiment of this invention. It is a top view which shows the blank of the packaging box (buffer structure) which concerns on the modification of one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the present specification, terms indicating directions and positions are used, but these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

[Outline of the packaging box]
With reference to FIG. 1 thru | or FIG. 5, the structure of the packaging box 1 etc. which concern on this embodiment is demonstrated. FIG. 1 is a perspective view showing the packaging box 1. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is an exploded perspective view showing the packaging box 1 and the buffer member 5. FIG. 4 is a plan view showing a blank 1 </ b> A of the packaging box 1. FIG. 5 is a plan view showing a blank 5 </ b> A of the buffer member 5.

  As shown in FIG. 1, the packaging box 1 is formed in a substantially rectangular parallelepiped shape with a short height. The packaging box 1 is an A-type box that is sealed by closing the upper surface and the lower surface of the substantially square cylindrical peripheral wall 1W.

  As shown in FIGS. 2 and 3, for example, a product P such as an electrical appliance is accommodated in the packaging box 1 via four molded cushioning members 4 and two cushioning members 5. The molded cushioning material 4 is molded from expanded polystyrene or defibrated fiber of used paper, and protects the four corners of the product P. The buffer member 5 is formed of a corrugated cardboard sheet and protects both sides in the length direction of the top surface of the product P. In FIG. 1, illustration of the product P, the molded cushioning material 4 and the cushioning member 5 is omitted.

  The packaging box 1 is formed by assembling the blank 1A shown in FIG. Similarly, the buffer member 5 is formed by assembling the blank 5A shown in FIG. These blanks 1A and 5A are formed by punching out a single sheet of corrugated cardboard sheet using a punching die or the like. For example, the corrugated cardboard sheet is formed by laminating a front liner 9B and a back liner 9C (see FIG. 3) on a corrugated center 9A. 3 and 4 show the front liner 9B side (the outer surface side of the packaging box 1). In this specification, a direction parallel to the corrugated sheet 9 </ b> A is referred to as a “step direction”, and a direction orthogonal to the step direction is referred to as a “flow direction”. In the drawing, “X” indicates “stage direction”, and “Y” indicates “flow direction”.

[Blank of packaging box]
As shown in FIG. 4, the blank 1A of the packaging box 1 includes a pair of side walls 10, a pair of end walls 11, a passage piece 12, a pair of lower inner and outer flaps 13, and a pair of lower and outer flaps 14, A pair of upper and inner flaps 15 and a pair of upper and outer flaps 16 are provided.

  The pair of side walls 10 and the pair of end walls 11 are alternately connected via a vertical folding curve L1. Each side wall 10 and each end wall 11 are formed in a rectangular shape having substantially the same size. The passage piece 12 is connected to the end portion in the flow direction of the one side wall 10 via the vertical folding curve L1.

  The pair of lower inner flaps 13 are connected to one end portion (lower end portion) in the step direction of the pair of end walls 11 via the lateral folding curve L2. The pair of lower and outer flaps 14 are connected to one end in the step direction of the pair of side walls 10 via a lateral folding curve L2. The lower inner flap 13 and the lower outer flap 14 are formed in a substantially rectangular shape, and the dimension in the step direction (extension dimension) is set to be approximately half of the dimension in the flow direction of the end wall 11.

  The pair of upper and inner flaps 15 are connected to the other end portion (upper end portion) in the step direction of the pair of end walls 11 via the horizontal folding curve L2. The pair of upper and outer flaps 16 are connected to the other end in the step direction of the pair of side walls 10 via the lateral folding curve L2. The upper inner flap 15 and the upper outer flap 16 are formed in substantially the same shape as the lower inner flap 13 and the like.

  The vertical folding curve L1 and the horizontal folding curve L2 are general-purpose ruled lines in which the corrugated cardboard sheet is crushed linearly in the thickness direction from the back liner 9C side. These folding lines L1 and L2 have a function of bending the cardboard sheet so that the back liner 9C faces inward. In addition, the packaging box 1 is shipped in a state where it is folded and the passage piece 12 is adhered to the inner surface of the end wall 11 with an adhesive. As the adhesive, for example, a hot melt adhesive, a synthetic resin emulsion adhesive, a double-sided tape, or the like can be used.

[Blank of cushioning member]
As shown in FIG. 5, the blank 5 </ b> A of the buffer member 5 includes a buffer wall 20, a pair of pressure receiving walls 21, an inner layer wall 22, and an outer layer wall 23.

  The pair of pressure receiving walls 21 are connected to both ends of the buffer wall 20 in the step direction. The inner layer wall 22 is connected to the stepwise end of one pressure receiving wall 21 (downward in FIG. 5) via an assembly folding line L3. The outer layer wall 23 is connected to the stepwise end of the other pressure receiving wall 21 (upward in FIG. 5) via the assembly folding line L3. The buffer wall 20, the pressure receiving wall 21, the inner layer wall 22, and the outer layer wall 23 are formed in a substantially rectangular shape having the same dimensions in the flow direction, and the dimensions in the flow direction of these walls 20 to 23 are the same as those of the packaging box 1. The end wall 11 (or the side wall 10) is set slightly shorter than the dimension in the flow direction. The buffer wall 20, the inner layer wall 22 and the outer layer wall 23 have substantially the same size in the step direction and are set shorter than the step size of the pressure receiving wall 21.

  In the vicinity of the center of the pressure receiving wall 21 between the buffer wall 20 and the inner layer wall 22 in the flow direction, a substantially rectangular engagement hole 24 is opened along the assembly folding line L3. In the vicinity of the center of the end of the outer layer wall 23 in the flow direction, an engagement piece 25 is continuously provided via an engagement folding line L4. The engagement piece 25 is formed in a substantially trapezoidal shape that gradually widens from the end of the outer layer wall 23 toward the outside.

[Buffer structure]
The buffer wall 20 is divided into three buffer surface portions 30 and two elevation surface portions 31 to constitute a main portion of the buffer structure 26. The three buffer surface portions 30 are arranged side by side in the flow direction, and the two standing surface portions 31 are provided on both outer sides in the flow direction of the three buffer surface portions 30. In addition, since the three buffer surface portions 30 have the same shape and the two vertical surface portions 31 are substantially symmetrical with the buffer surface portion 30 in between, the following description mainly includes one buffer surface portion 30 and one vertical surface. The unit 31 will be described.

<Buffer surface part>
The buffer surface portion 30 is against each virtual boundary line V (see the two-dot chain line shown in FIG. 4) set linearly (parallel to the assembly folding curve L3) between the buffer wall 20 and each pressure receiving wall 21. And is formed in a substantially parallelogram shape inclined. Specifically, the buffer surface portion 30 is formed in a range surrounded by a pair of buffer folding lines L5 facing in the step direction and a pair of cutting lines CL facing in the flow direction.

(Buffer curve)
The pair of buffer folding lines L5 are general ruled lines formed in a straight line with the same length. The pair of buffer folding lines L5 are formed in parallel with each other so as to incline so as to intersect each virtual boundary line V. The buffer folding curve L5 has an inclination of about 6 to 16 degrees (as an example, about 9 degrees in FIG. 4) with respect to the virtual boundary line V. Among the diagonal portions of the buffer surface portion 30, the ends of the pair of buffer folding lines L5 located between the pair of virtual boundary lines V are between the virtual boundary line V and a gap G1 of about 3 to 8 mm (as an example) 4 in FIG. 4). In addition, in the diagonal portion of the buffer surface portion 30, the end portions of the pair of buffer folding curves L <b> 5 located on the outer side in the step direction from the pair of virtual boundary lines V are about 5 to 13 mm between the virtual boundary lines V ( As an example, the gap G2 is about 7 mm in FIG.

(Cut line)
The pair of cutting lines CL are straight cuts obtained by cutting the cardboard sheet in the thickness direction. The pair of cutting lines CL are formed in parallel to each other so as to connect both sides (both ends) of the pair of buffer folding lines L5. The cutting line CL is slightly inclined with respect to a vertical line (not shown) orthogonal to the virtual boundary line V. Note that two adjacent buffer surface portions 30 share one cutting line CL. Similarly, an upright surface portion 31 described later and a buffer surface portion 30 adjacent thereto share one cutting line CL, and the cutting line CL exceeds both ends of the pair of buffer folding curves L5. It extends to the outside in the step direction.

  The buffer folding line L5 and the part of the cutting line CL that form the three buffer surface portions 30 described above extend in the flow direction while being bent zigzag across the virtual boundary line V.

(Auxiliary folding line)
In the buffer surface portion 30, the auxiliary folding line L6 is formed in a state inclined in the direction opposite to the buffer folding curve L5. The auxiliary folding line L6 is a general ruled line that is arranged so as to bisect the buffer surface portion 30 in an oblique manner. The auxiliary folding line L6 has an inclination of about 25 to 45 degrees (about 25 degrees in FIG. 4 as an example) with respect to the buffer folding line L5. Note that both ends of the auxiliary folding line L6 are separated from the pair of buffer folding lines L5.

<Elevation section>
The upright portion 31 is formed in a substantially rectangular shape parallel to the virtual boundary line V in a portion of the buffer wall 20 excluding the buffer surface portion 30. Specifically, the buffer surface portion 30 is formed in a range surrounded by a pair of reference folding lines L7 and a cutting line CL that face each other in the step direction.

(Standard folding curve)
The pair of reference folding lines L7 are general-purpose ruled lines formed on the virtual boundary line V (an extension thereof). The pair of reference folding lines L7 extend linearly from the cutting line CL at the boundary between the rising surface portion 31 and the buffer surface portion 30 to the outer end in the flow direction.

[Sealing of packaging boxes]
Next, the sealing operation of the packaging box 1 will be described. Here, as an example, a case where the operator assembles the packaging box 1 and the buffer member 5 will be described.

<Assembly of cushioning member>
First, an assembly procedure of the buffer member 5 will be described with reference to FIG. FIG. 6 is a perspective view showing the buffer member 5. Hereinafter, in order to simplify the description, description will be given mainly focusing on one buffer surface portion 30 and one elevation surface portion 31.

  The operator bends the pair of pressure receiving walls 21 substantially at right angles along the pair of buffer folding curves L5 and the pair of reference folding curves L7, and makes the pair of pressure receiving walls 21 face each other in the vertical direction with the buffer space S interposed therebetween. . In the state in which the buffer space S is formed, the buffer surface portion 30 is folded along the auxiliary folding line L6 so as to protrude to the other side, and a pair of the inclined surfaces that are inclined in opposite directions with respect to the pressure receiving wall 21 around the auxiliary folding line L6. The buffer claws 32 are formed. Each of the buffer claws 32 has a diagonal portion (see FIG. 5) located between the pair of virtual boundary lines V protruding outward and a diagonal portion located outside the pair of virtual boundary lines V (see FIG. 5). ) Is drawn inward to form an inclination. Moreover, since the buffer claws 32 adjacent to each other across the cutting line CL are also inclined in the opposite directions, these cross sections intersect each other.

  Further, in a state where the buffer space S is formed by bending the pair of pressure receiving walls 21, a portion of the buffer wall 20 excluding the buffer surface portion 30 forms an elevation surface portion 31 that is orthogonal to the pressure receiving wall 21. Moreover, since the buffer claw 32 adjacent to the upright part 31 across the cutting line CL is inclined with respect to the upright part 31, these cross sections intersect each other.

  Next, the operator bends the inner layer wall 22 along the assembly folding line L3 toward the buffer space S and bends the outer layer wall 23 so as to overlap the inner layer wall 22 along the assembly folding line L3. Subsequently, the operator pushes the engagement piece 25 into the engagement hole 24 while bending the engagement piece 25 along the engagement fold line L <b> 4, and hooks the engagement piece 25 on the edge of the engagement hole 24.

  As described above, the substantially square cylindrical buffer member 5 is completed. The operator assembles two buffer members 5.

<Assembly of packaging box>
Next, the assembly procedure of the packaging box 1 will be described with reference to FIGS.

  The operator bends the pair of side walls 10 and the pair of end walls 11 at a substantially right angle along the vertical folding curve L1 to form a substantially square cylindrical peripheral wall 1W. Next, the operator bends the pair of lower inner flaps 13 along the lateral folding curve L2 to the inside of the peripheral wall 1W, and then bends the pair of lower outer flaps 14 along the lateral folding curve L2 to the inside of the peripheral wall 1W. (See FIGS. 2 and 3). An operator affixes an adhesive tape (not shown) along the abutting portion at the tip of the pair of lower and outer flaps 14. By the above, the lower surface opening of the surrounding wall 1W is obstruct | occluded and the bottom face of the packaging box 1 is formed (refer FIG. 2 and FIG. 3).

  Next, as shown in FIGS. 2 and 3, the operator places the four molding buffer materials 4 at the four corners on the bottom surface, and places the product P on the bottom receiving portion 4 </ b> A of each molding buffer material 4. Subsequently, the operator places the two buffer members 5 on both sides of the top surface of the product P in the length direction (see FIG. 2). The two buffer members 5 are arranged in a posture in which the buffer walls 20 face each other.

  Next, the operator bends the pair of upper and inner flaps 15 along the lateral folding curve L2 inside the peripheral wall 1W, and then bends the pair of upper and outer flaps 16 along the lateral folding curve L2 inside the circumferential wall 1W. (See FIG. 1). An operator affixes the adhesive tape along the abutting portion at the tip of the pair of upper and outer flaps 16. Thereby, the upper surface opening of the surrounding wall 1W is obstruct | occluded, and the top | upper surface of the packaging box 1 is formed (refer FIG. 1 and FIG. 2). In the above description, the pair of lower outer flaps 14 and the pair of upper and outer flaps 16 are fixed to the peripheral wall 1W with an adhesive tape. However, the present invention is not limited to this, and the inner flaps 13 and 15 are connected via an adhesive. It may be adhered to the surface of

  Thus, the sealing operation of the packaging box 1 is completed. In this sealed state, as shown in FIG. 2, the pressure receiving wall 21 below the buffer member 5 is in close contact with the top surface of the product P, and the pressure receiving wall 21 above the buffer member 5 is the upper inner flap 15. It is in close contact with the back side. The buffer member 5 has the buffer wall 20, the inner layer wall 22, and the outer layer wall 23 erected to form a buffer structure 26 in which the pair of pressure receiving walls 21 face each other in the vertical direction across the buffer space S.

  In the buffer member 5 (buffer structure 26) according to the present embodiment described above, the buffer surface 30 is inclined in the opposite direction by being folded at the auxiliary folding line L6 in conjunction with the bending of the pair of pressure receiving walls 21. A pair of buffer claws 32 was formed (see FIG. 6). In this way, by alternately tilting the pair of buffer claws 32, the pair of buffer claws 32 buffers (absorbs) the load acting on the pressure receiving wall 21 by being crushed within the buffer space S with the auxiliary folding line L6 as a fulcrum. )can do. In addition, when a relatively weak load that does not collapse the buffer space S acts on the pressure receiving wall 21, the pair of buffer claws 32 can be elastically deformed within the range of the buffer space S with the auxiliary folding line L6 as a fulcrum. In other words, the pair of buffer claws 32 formed from one buffer surface portion 30 functions like a spring and applies a substantially constant holding force to the pressure receiving wall 21. Thereby, regardless of whether the buffer surface portion 30 (the pair of buffer claws 32) is single or plural, the pressure receiving wall 21 can be appropriately held, and stable buffer properties can be secured. As a result, the product P accommodated in the packaging box 1 can be appropriately protected. In addition, the rigidity of the buffer surface portion 30 (the pair of buffer claws 32) improves as the angle of the auxiliary fold line L6 with respect to the buffer fold curve L5 increases.

  Moreover, according to the buffer member 5 according to the present embodiment, the bifurcated buffer surface portion 30 forms a pair of buffer claws 32 having substantially the same size and different inclination directions, so that the buffer surface is substantially uniform and stable. Can be secured.

  Moreover, according to the buffer member 5 according to the present embodiment, the pressure receiving wall 21 can be held by the buffer claws 32 and the upright surface portion 31, so that it is effective for a large load (impact) applied to the pressure receiving wall 21. Can be countered.

  In the buffer member 5 according to the present embodiment, the three buffer surface portions 30 are formed with an inclination in the same direction with respect to the virtual boundary line V, but the present invention is not limited to this. For example, as shown in FIG. 7, as the buffer member 6 (blank 6 </ b> A) according to the first modification, two buffer surface portions 30 may be formed with two inclinations in opposite directions. In the buffer member 6, a slit 40 that separates the buffer wall 20, the one pressure receiving wall 21, and the inner layer wall 22 at the center in the flow direction is formed. The four buffer surface portions 30 are arranged so as to be line symmetric with respect to the slit 40. In the buffer member 6, two engagement holes 24 and two engagement pieces 25 are formed.

  Moreover, in the buffer member 5 which concerns on this embodiment, although the buffer folding curve L5 was formed in linear form, this invention is not limited to this. For example, as shown in FIG. 8, as the buffer member 7 (blank 7A) according to the second modified example, a pair of buffer folding curves L50 may be curved in a substantially S shape.

  Further, in the buffer member 5 and the like according to the present embodiment (including the first and second modified examples, the same applies hereinafter), the assembly folding line L3, the buffer folding line L5, the auxiliary folding line L6, and the reference folding line L7 are general ruled lines. However, the present invention is not limited to this. For example, a lead ruled line in which a plurality of cuts are arranged at equal intervals on a general ruled line may be adopted.

  Further, in the buffer member 5 and the like according to the present embodiment, the inner layer wall 22 and the outer layer wall 23 are connected to the pair of pressure receiving walls 21, but the present invention is not limited thereto, and the inner layer wall 22 and the outer layer wall 23 are omitted. (Not shown). Further, the inner layer wall 22 and the outer layer wall 23 may be left, and the engagement hole 24 and the engagement piece 25 may be omitted.

  Moreover, although the buffer member 5 etc. which concern on this embodiment were arrange | positioned between the goods P and the top | upper surface of the packaging box 1, in addition to this / in place of this, the goods P and the bottom face of the packaging box 1 (Not shown).

  In addition, although the buffer member 5 etc. which concern on this embodiment were comprised as a member different from the packaging box 1, this invention is not limited to this. For example, as shown in FIG. 9, as another packaging box 2 (blank 2 </ b> A), the buffer structure 26 employed in the buffer member 5 is used as a pair of upper inner flaps 15 (or / and a pair of lower inner flaps 13). It may be formed.

  Moreover, in the buffer member 5 etc. and the packaging box 2 which concern on this embodiment, although the three or four buffer surface parts 30 and the two standing surface parts 31 were juxtaposed in the flow direction, this invention is limited to this. Not. One or more buffer surface portions 30 may be formed. Moreover, although the one or more elevation part 31 should just be formed, it may be abbreviate | omitted.

  Moreover, although the buffer member 5 and the packaging boxes 1 and 2 according to the present embodiment are formed of paper cardboard sheets, the present invention is not limited thereto, and may be formed of, for example, cardboard or resin plates. Good.

  In addition, description of the said embodiment shows the one aspect | mode in the buffer structure concerning this invention, a buffer member, and a packaging box, Comprising: The technical scope of this invention is not limited to the said embodiment.

DESCRIPTION OF SYMBOLS 1, 2, Packaging box 5, 6, 7 Buffer member 20 Buffer wall 21 Pressure receiving wall 26 Buffer structure 30 Buffer surface part 31 Elevation part 32 Buffer claw CL Cutting line L5 Buffer curve
L6 Auxiliary fold line S Buffer space V Virtual border

Claims (5)

A buffer structure (26) including a pair of pressure receiving walls (21) connected to both ends of the buffer wall (20), wherein the pair of pressure receiving walls are opposed to each other across the buffer space (S);
A pair of fold lines (L5) that are formed in parallel to each other so as to intersect each virtual boundary line (V) that is linearly set between the buffer wall and each pressure receiving wall. ,
A pair of cutting lines (CL) formed parallel to each other so as to connect both sides of the pair of folding lines;
An auxiliary fold line (L6) formed in a state inclined to the direction opposite to the fold line on the buffer surface part (30) surrounded by the pair of fold lines and the pair of cutting lines,
In a state where the pair of pressure receiving walls are bent in one direction along the pair of folding lines and the buffer space is formed, the buffer surface portion is bent along the auxiliary fold line so as to protrude to the other side, and the auxiliary A buffer structure characterized by forming a pair of buffer claws (32) inclined in opposite directions with respect to the pressure receiving wall around a broken line. The auxiliary folding line is arranged to bisect the buffer surface portion,
Each of the buffer claws has a diagonal portion positioned between the pair of virtual boundary lines protruding outward, and a diagonal portion positioned outside the pair of virtual boundary lines is pulled inward. The buffer structure according to claim 1, wherein a slope is formed.   The buffer structure according to claim 1 or 2, wherein a portion of the buffer wall excluding the buffer surface portion forms an upright surface portion (31) orthogonal to the pressure receiving wall.   A cushioning member (5-7) comprising the cushioning structure according to any one of claims 1 to 3.   A packaging box (1, 2) comprising the buffer structure according to any one of claims 1 to 3 or the buffer member according to claim 4.

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