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JP-7855870-B2 - cushioning material

JP7855870B2JP 7855870 B2JP7855870 B2JP 7855870B2JP-7855870-B2

Inventors

  • 根本 慎二

Assignees

  • 京セラドキュメントソリューションズ株式会社

Dates

Publication Date
20260511
Application Date
20220221

Claims (3)

  1. A cushioning member formed by folding a single corrugated cardboard sheet, A cylindrical cushioning portion having a cylindrical shaft extending in a first direction, which contacts the packaged object from one side in a second direction perpendicular to the first direction, and which cushions the first impact applied from the second direction by deforming itself, The device comprises an internal cushioning portion, which is disposed within the internal space of the cylindrical cushioning portion, and which, after the first impact, when the cylindrical cushioning portion is deformed, cushions the second impact by deforming itself when a second impact is applied from the second direction, The aforementioned internal cushioning portion is arranged such that the transverse grain direction of the core of the corrugated cardboard sheet is the second direction . The aforementioned internal cushioning portion is a laminated block formed by zigzag folding of a part of the corrugated cardboard sheet, and has a plurality of cores that overlap in a third direction perpendicular to the first and second directions, and is a cushioning member.
  2. The cylindrical buffer portion has a first wall portion and a second wall portion that are arranged opposite to each other in the second direction, The first wall portion is positioned on one side in the second direction, The second wall portion is positioned on the other side in the second direction and is in contact with the packaged item. The cushioning member according to claim 1, wherein the internal cushioning portion is arranged at a distance in the second direction from the inner surface of at least one of the first wall portion and the second wall portion.
  3. The cushioning member according to claim 1 or 2, wherein when the second impact is applied, the cylindrical cushioning portion contacts the surface of the liner bonded to the core within the inner cushioning portion in the internal space, thereby restricting the deformation of the inner cushioning portion in a direction different from the second direction.

Description

This invention relates to a cushioning member. Conventionally, cushioning members that absorb impact to the packaged items inside a packaging case are known. For example, the cushioning member described in Patent Document 1 is formed using a mold from a pulp mold-type material by the pulp molding method. Japanese Patent Publication No. 2021-127147 This is a perspective view of a cushioning member according to one embodiment.This is a perspective view showing a packaged item protected by a cushioning member according to one embodiment.This is a schematic diagram of a corrugated cardboard sheet forming a cushioning member according to one embodiment.This is a perspective view of a first buffer member according to one embodiment.Figure 4 is a perspective view showing the internal structure of the first buffer member.Figure 4 is a cross-sectional view of the first buffer member, obtained by cutting it in the YZ plane.This is a diagram illustrating the collapse of a corrugated cardboard sheet.This is a diagram illustrating the buckling of corrugated cardboard sheets.This diagram schematically shows the state when a first impact is applied to the first cushioning member according to one embodiment.This is a perspective view of a corrugated cardboard sheet of the first cushioning member according to one embodiment, with the sheet unfolded.This is a perspective view of a second buffer member according to one embodiment.Figure 11 is a schematic diagram showing the internal structure of the second buffer member.Figure 11 is a cross-sectional view of the second buffer member, obtained by cutting it in the YZ plane.Figure 11 is a cross-sectional view of the second buffer member, obtained by cutting it in the XY plane.This is a perspective view of the unfolded corrugated cardboard sheet of the second cushioning member according to one embodiment. The following description of a buffer member 10 according to one embodiment of the present invention will be given with reference to Figures 1 to 15. In the following description, the X direction is defined as the left-right direction, the Y direction as the front-back direction, and the Z direction as the up-down direction. Note that the X direction corresponds to the "first direction," the Y direction as the "second direction," and the Z direction as the "third direction." Furthermore, within the X direction, +X is defined as right, and -X as left. Within the Y direction, +Y is defined as front, and -Y as back. Within the Z direction, +Z is defined as up, and -Z as down. <Overall Structure> As shown in Figures 1 and 2, the cushioning member 10 is housed in the packaging case 2000 together with the packaged item 1000. The cushioning member 10 protects the packaged item 1000 inside the packaging case 2000. By placing the cushioning member 10 inside the packaging case 2000, impacts to the packaged item 1000 are cushioned. The packaged item 1000 is, for example, a printer. The packaging case 2000 also contains other cushioning members besides the cushioning member 10, although their reference numerals are omitted. The packaging case 2000 is made of corrugated cardboard. The packaging case 2000 has an opening 2000A on its upper side. The cushioning member 10 is inserted into and removed from the packaging case 2000 through the opening 2000A. That is, the direction of insertion and removal of the cushioning member 10 from the packaging case 2000 is vertical. Similarly, the packaged item 1000 is inserted into and removed from the packaging case 2000 through the opening 2000A. The cushioning members 10 are positioned on the upper and lower sides, respectively. As will be described in detail later, each of the upper and lower cushioning members 10 comprises a cylindrical cushioning section 1 and an inner cushioning section 2. The upper cushioning member 10 cushions the impact on the packaged item 1000 from the front and upper side. The lower cushioning member 10 cushions the impact on the packaged item 1000 from the front and lower side. In the following description, when it is necessary to distinguish between the upper and lower cushioning members 10, the upper cushioning member 10 will be denoted by reference numeral 110 and referred to as the first cushioning member 110, and the lower cushioning member 10 will be denoted by reference numeral 210 and referred to as the second cushioning member 210. Furthermore, the cylindrical cushioning portion 1 of the first cushioning member 110 will be denoted by reference numeral 11 and referred to as the first cylindrical cushioning portion 11, and the inner cushioning portion 2 of the first cushioning member 110 will be denoted by reference numeral 12 and referred to as the first inner cushioning portion 12. The cylindrical cushioning portion 1 of the second cushioning member 210 will be denoted by reference numeral 21 and referred to as the second cylindrical cushioning portion 21, and the inner cushioning portion 2 of the second cushioning