JP2023009855A - Shock cushioning material, packaging material, and packaging system - Google Patents

Shock cushioning material, packaging material, and packaging system Download PDF

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JP2023009855A
JP2023009855A JP2021113477A JP2021113477A JP2023009855A JP 2023009855 A JP2023009855 A JP 2023009855A JP 2021113477 A JP2021113477 A JP 2021113477A JP 2021113477 A JP2021113477 A JP 2021113477A JP 2023009855 A JP2023009855 A JP 2023009855A
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cushioning
base structure
impact
shock
auxiliary
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末廣真也
Shinya Suehiro
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Ricoh Co Ltd
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Ricoh Co Ltd
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Priority to JP2021113477A priority Critical patent/JP2023009855A/en
Priority to US17/847,318 priority patent/US20230020334A1/en
Priority to EP22182785.0A priority patent/EP4116221B1/en
Publication of JP2023009855A publication Critical patent/JP2023009855A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/107—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using blocks of shock-absorbing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/107—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using blocks of shock-absorbing material
    • B65D81/113—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using blocks of shock-absorbing material of a shape specially adapted to accommodate contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/127—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using rigid or semi-rigid sheets of shock-absorbing material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)

Abstract

To provide a shock cushioning material which can improve a shock cushioning property further than a conventional one, in the shock cushioning material which includes a shock cushioning rib structure.SOLUTION: In a shock cushioning material which is constituted by a base structure part which has a storage space for a body to be packaged, and a shock cushioning rib structure provided at least on one surface of the base structure, the shock cushioning rib structure is constituted by: a main cushioning part supported by the base structure part and having a cubic or rectangular parallelepiped shape; and an auxiliary cushioning part supported by the base structure part on both end parts, and having a shape in which a space between both end parts is separated from the base structure part.SELECTED DRAWING: Figure 2

Description

本発明は、衝撃緩衝材、包装体、及び包装システムに関する。 The present invention relates to shock absorbers, packages, and packaging systems.

精密機械製品用の包装材には、物流下で受ける振動又は落下衝撃により、脆弱な被包装体が変形や破損を引き起こさないように、衝撃緩衝機能を有する緩衝材が装着されている。この緩衝材は、被包装体に作用する衝撃、すなわち衝撃加速度を、それ自身の変形・座屈作用により緩衝できる。例えば、最大数百Ｇの衝撃加速度が被包装体に掛かる場合であっても、緩衝材を用いることで百Ｇ以下の衝撃加速度に低減できる技術が知られている。 Packaging materials for precision machinery products are equipped with cushioning materials having a shock absorbing function so that fragile packaged objects are not deformed or damaged by vibrations received during distribution or impact from drops. This cushioning material can cushion impact acting on the packaged object, that is, impact acceleration, by its own deformation and buckling action. For example, there is known a technique that can reduce the impact acceleration to 100 G or less by using a cushioning material even if the object to be packaged is subjected to an impact acceleration of several hundred G at the maximum.

従来の緩衝材は、被包装体の質量や想定落下高さに合わせた構造強度で形成される衝撃緩衝用リブ構造が設けられ（図１参照）、衝撃緩衝用リブ構造の圧縮変形から生じる圧縮応力特性により、衝撃緩衝機能を発揮していた。また、この圧縮応力特性による衝撃緩衝の最大効率点は、圧縮歪みが０．５～０．６５となる条件下であり、これが当該構成における衝撃緩衝機能の限界点であることが既に知られている。 Conventional cushioning materials are provided with a shock-absorbing rib structure that is formed with a structural strength that matches the mass of the packaged object and the assumed drop height (see Fig. 1). Due to the stress characteristics, it exhibited a shock absorbing function. In addition, it is already known that the maximum efficiency point of impact cushioning by this compressive stress characteristic is the condition where the compressive strain is 0.5 to 0.65, and this is the limit point of the impact cushioning function in this configuration. there is

また、例えば特許文献１には、包蓋面板又は底面板の内側フラップの先端部分を折り曲げて形成した緩衝部材で、収容する製品の上面又は底面を支持する包装箱が開示されている。 Further, for example, Patent Literature 1 discloses a packaging box that supports the upper surface or the bottom surface of a product to be accommodated by a cushioning member formed by bending the tip portion of the inner flap of the cover surface plate or the bottom plate.

これら従来の緩衝材及び特許文献１に開示されている包装箱は、シンプルな構造で良好な衝撃緩衝性を有するが、衝撃緩衝用リブ構造の圧縮応力特性には限界があり、一層の衝撃緩衝性を得ることは困難であった。 These conventional shock-absorbing materials and the packaging box disclosed in Patent Document 1 have a simple structure and good shock-absorbing properties. It was difficult to get sex.

そこで本発明は、衝撃緩衝用リブ構造を備える衝撃緩衝材において、従来よりも衝撃緩衝性を向上できる衝撃緩衝材の提供を目的とする。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a shock-absorbing material having a rib structure for shock-absorbing that can improve shock-absorbing properties more than conventional ones.

上記課題は、被包装体の収容空間を有するベース構造部と、前記ベース構造部の少なくとも一面に設けられた衝撃緩衝用リブ構造から構成される衝撃緩衝材において、前記衝撃緩衝用リブ構造が、前記ベース構造部に支持され、立方体又は直方体形状を有する主緩衝部と、両端部で前記ベース構造部に支持され、前記両端部の間が前記ベース構造部から離間した形状を有する補助緩衝部とで構成されることを特徴とする衝撃緩衝材によって解決される。 The above-mentioned problem is an impact cushioning material composed of a base structure having a space for accommodating an object to be packaged, and a shock cushioning rib structure provided on at least one surface of the base structure, wherein the impact cushioning rib structure is: a main cushioning portion supported by the base structure and having a cubic or rectangular parallelepiped shape, and an auxiliary cushioning portion supported by the base structure at both ends and having a shape in which the both ends are separated from the base structure It is solved by a shock-absorbing material characterized by being composed of

本発明の衝撃緩衝材は、衝撃緩衝用リブ構造が、圧縮変形する主緩衝部と、圧縮及び曲げ変形する補助緩衝部とで構成されている。主緩衝部は圧縮応力を作用し、補助緩衝部は圧縮及び曲げ応力を作用する。したがって、衝撃緩衝用リブ構造は複合的な応力作用を生じ、従来よりも衝撃緩衝性を向上できる。 In the impact cushioning material of the present invention, the impact cushioning rib structure is composed of a main cushioning portion that compressively deforms and an auxiliary cushioning portion that compresses and bends. The main buffer exerts compressive stress and the auxiliary buffer exerts compressive and bending stress. Therefore, the shock-absorbing rib structure produces a compound stress action, and can improve the shock-absorbing property more than before.

従来仕様に係る衝撃緩衝材の斜視図である。It is a perspective view of the impact-cushioning material which concerns on a conventional specification. 本発明の一実施形態に係る衝撃緩衝材の斜視図である。1 is a perspective view of a shock absorbing material according to one embodiment of the present invention; FIG. 図２の衝撃緩衝材に作用する応力を示す斜視図である。FIG. 3 is a perspective view showing stress acting on the shock absorbing material of FIG. 2; （ａ）は、各緩衝部の特性を示すグラフであり、（ｂ）は、従来仕様と本実施形態の特性を比較するグラフである。(a) is a graph showing the characteristics of each buffer portion, and (b) is a graph comparing the characteristics of the conventional specification and the present embodiment. 衝撃緩衝用リブ構造を複数有する衝撃緩衝材の斜視図である。1 is a perspective view of a shock absorbing material having a plurality of shock absorbing rib structures; FIG. 図２の衝撃緩衝材に対し、主緩衝部及び補助緩衝部の配置を変更した衝撃緩衝材の斜視図である。FIG. 3 is a perspective view of an impact cushioning material in which the arrangement of a main cushioning portion and an auxiliary cushioning portion is changed with respect to the impact cushioning material of FIG. 2; 複数の平板を重ねて合わせて構成した衝撃緩衝材の模式図（その１）である。FIG. 1 is a schematic diagram (Part 1) of an impact cushioning material configured by stacking a plurality of flat plates. 複数の平板を重ねて合わせて構成した衝撃緩衝材の模式図（その２）である。FIG. 2 is a schematic diagram (No. 2) of an impact cushioning material configured by stacking a plurality of flat plates. 被包装体の収容空間を有さない衝撃緩衝材の斜視図である。FIG. 3 is a perspective view of a shock-absorbing material that does not have an accommodation space for an object to be packaged; 補助緩衝部の形状バリエーションを示す斜視図であるFIG. 10 is a perspective view showing variations in the shape of the auxiliary cushioning portion; 主緩衝部に変形を加えた衝撃緩衝材の斜視図である。FIG. 4 is a perspective view of a shock-absorbing material in which a main cushioning portion is deformed; 補助緩衝部の変形部分を収容する開口部を有する衝撃緩衝材の斜視図である。FIG. 4 is a perspective view of a shock absorbing material having an opening for accommodating a deformed portion of an auxiliary buffer; 図１２に示す衝撃緩衝材の側面図である。FIG. 13 is a side view of the shock absorbing material shown in FIG. 12;

図２は、本発明の一実施形態に係る衝撃緩衝材の斜視図である。この衝撃緩衝材１は、被包装体（例えば、複写機）の収容空間５を有するベース構造部１０と、ベース構造部１０の上面に設けられた衝撃緩衝用リブ構造２０から構成される。 FIG. 2 is a perspective view of a shock absorbing material according to one embodiment of the present invention. This shock absorbing material 1 is composed of a base structural portion 10 having a space 5 for accommodating a packaged object (eg, a copier) and a shock absorbing rib structure 20 provided on the upper surface of the base structural portion 10 .

この衝撃緩衝用リブ構造２０は、ベース構造部１０に支持され、立方体又は直方体形状を有する主緩衝部１２と、両端部でベース構造部１０に支持され、両端部の間がベース構造部１０から離間した形状を有する補助緩衝部１４とで構成される。 This impact-absorbing rib structure 20 is supported by the base structure 10 and has a main cushioning portion 12 having a cubic or rectangular parallelepiped shape, and both ends thereof are supported by the base structure 10 . It is composed of an auxiliary cushioning portion 14 having a spaced apart shape.

具体的に、ベース構造部１０の上面で中央位置に、主緩衝部１２が１つ設けられ、それを挟むように補助緩衝部１４が２つ設けられている。また、補助緩衝部１４は、逆Ｖの字（又はアーチ状）の形状を有し、曲げ変形を生じさせることを意図している。 Specifically, one main cushioning portion 12 is provided at the central position on the upper surface of the base structure portion 10, and two auxiliary cushioning portions 14 are provided so as to sandwich it. Further, the auxiliary cushioning portion 14 has an inverted V shape (or arch shape) and is intended to cause bending deformation.

複写機などの被包装体は、衝撃緩衝材１が装着され、包装材に梱包される。その包装材が振動及び／又は落下衝撃を受けると、図３に示すように、主緩衝部１２の圧縮変形による圧縮応力が作用すると同時に、補助緩衝部１４の曲げ変形による圧縮及び曲げ応力が作用する。 An object to be packaged, such as a copying machine, is attached with a shock absorbing material 1 and packed in a packaging material. When the packaging material is subjected to vibration and/or drop impact, as shown in FIG. do.

従来仕様（図１参照）では、単一に設けられた衝撃緩衝用リブ構造の圧縮変形及び圧縮応力のみで衝撃緩衝を行うが、本実施形態（図２参照）では、主緩衝部１２と、新たに設けた補助緩衝部１４とで複合応力作用を生じさせる。これは、従来仕様以上の衝撃吸収効率で衝撃を緩衝し、同じ被包装体であっても掛かる最大衝撃力を低減できる。 In the conventional specification (see FIG. 1), the impact is cushioned only by the compressive deformation and compressive stress of the single shock-absorbing rib structure, but in this embodiment (see FIG. 2), the main cushioning portion 12 and Combined stress action is generated with the newly provided auxiliary buffer portion 14 . This absorbs shocks with shock absorption efficiency higher than that of conventional specifications, and can reduce the maximum impact force applied to the same packaged object.

図４（ａ）は、各緩衝部の特性を示すグラフであり、図４（ｂ）は、従来仕様と本実施形態の特性を比較するグラフである。（ａ）、（ｂ）ともに、横軸は変形量（ｍｍ）であり、縦軸は作用する反力（Ｎ）である。 FIG. 4(a) is a graph showing the characteristics of each buffer portion, and FIG. 4(b) is a graph comparing the characteristics of the conventional specification and the present embodiment. In both (a) and (b), the horizontal axis is the amount of deformation (mm), and the vertical axis is the reaction force (N).

（ａ）の一番下の線で示すように、補助緩衝部では、当初は主として圧縮応力が作用し、その後、曲げ変形による曲げ応力が作用する。曲げ変形が生じる時点で大きく反力が下がり、その後緩やかに上昇していくのが分かる。 As shown by the bottom line in (a), the auxiliary cushioning portion is initially primarily subjected to compressive stress, and then to bending stress due to bending deformation. It can be seen that the reaction force drops significantly when bending deformation occurs, and then rises gently.

一方、（ａ）の真ん中の線で示すように、主緩衝部では圧縮応力が作用するため、反力は単調に増加することが分かる。したがって、（ａ）の一番上のグラフに示すように、これら主緩衝部と補助緩衝部の合計した複合力（反力）は、主緩衝部のみの場合よりも立ち上がりが早く、かつ、その値も大きくなる。 On the other hand, as shown by the middle line in (a), since compressive stress acts on the main cushioning portion, it can be seen that the reaction force increases monotonously. Therefore, as shown in the top graph of (a), the total combined force (reaction force) of the main shock absorber and the auxiliary shock absorber rises faster than the main shock absorber alone, and its value also increases.

上記に加えて、本実施形態では、主緩衝部の衝撃を受ける面積を小さくし、小さな体積とすれば、主緩衝部での反力を小さくすることができる。すなわち、（ｂ）のグラフに示すように、本実施形態の衝撃緩衝材は、変形開始時点での反力の立ち上げ及びその値を大きくできるとともに、所定の変形後に被包装体に作用する反力を従来仕様の緩衝材よりも低減できる。 In addition to the above, in the present embodiment, the reaction force in the main cushioning portion can be reduced by reducing the area of the main cushioning portion that receives the impact and reducing the volume. That is, as shown in the graph (b), the impact cushioning material of the present embodiment can raise the reaction force at the start of deformation and increase its value, and the reaction force acting on the packaged object after predetermined deformation can be increased. The force can be reduced compared to conventional cushioning materials.

図２の衝撃緩衝材１は、ベース構造部１０の一面に、主緩衝部１２を１つ、補助緩衝部１４を２つ設けているが、これに限定されない。主緩衝部１２及び補助緩衝部１４を、ベース構造部１０の少なくとも一面にそれぞれ少なくとも１つ以上設けてもよい。被包装体の質量及び想定落下高さから想定される衝撃に対し、適切な衝撃緩衝用リブ構造を選択できる。 Although the impact cushioning material 1 of FIG. 2 has one main cushioning portion 12 and two auxiliary cushioning portions 14 provided on one surface of the base structure portion 10, the structure is not limited to this. At least one main cushioning portion 12 and at least one auxiliary cushioning portion 14 may be provided on at least one surface of the base structure portion 10 . An appropriate impact-absorbing rib structure can be selected for the impact assumed from the mass of the object to be packaged and the assumed drop height.

続いて、本発明の有利な構成について説明する。 Advantageous configurations of the present invention will now be described.

図５は、衝撃緩衝用リブ構造を複数有する衝撃緩衝材の斜視図である。主緩衝部１２及び補助緩衝部１４は、ベース構造部１０の複数の面上（図５では、隠れている背面も含めて、最大５面）に設けることができる。衝撃緩衝材１ａは、多方面に衝撃緩衝用リブ構造２０を有することから、多方面で衝撃緩衝機能を発揮できる。 FIG. 5 is a perspective view of a shock absorbing material having a plurality of shock absorbing rib structures. The main cushioning portion 12 and the auxiliary cushioning portion 14 can be provided on a plurality of surfaces of the base structure portion 10 (up to five surfaces including the hidden back surface in FIG. 5). Since the impact cushioning material 1a has the impact cushioning rib structure 20 on multiple sides, it can exhibit impact cushioning functions on multiple sides.

なお、衝撃緩衝材１ａは、直方体、立方体といった六面体に限定されず、より多くの面を有する立体形状であってもよく、それぞれの面に衝撃緩衝用リブ構造２０を有してもよい。 The shock absorbing material 1a is not limited to a hexahedron such as a rectangular parallelepiped or a cube, and may have a three-dimensional shape having more faces, and may have the shock absorbing rib structure 20 on each face.

主緩衝部１２及び補助緩衝部１４の並べ方（配置）について説明する。被包装体の重心が中央寄りにある場合は、先の図２に示したように、主緩衝部１２をベース構造部１０の同一面上にある２つの補助緩衝部１４の間に設ける構成が適している。 The arrangement (arrangement) of the main cushioning portion 12 and the auxiliary cushioning portion 14 will be described. When the center of gravity of the object to be packaged is near the center, as shown in FIG. Are suitable.

一方、被包装体の重心が片方寄り（偏重心）にある場合は、図６に示すように、補助緩衝部１４をベース構造部１０の同一面上にある２つの主緩衝部１２の間に設ける構成が適している。この衝撃緩衝材１ｂは、衝撃緩衝時に生じる傾きを抑制できる。 On the other hand, when the center of gravity of the object to be packaged is on one side (eccentric center of gravity), as shown in FIG. The configuration provided is suitable. This shock-absorbing material 1b can suppress tilting that occurs during shock-absorbing.

図７、図８は、複数の平板を重ねて合わせて構成した衝撃緩衝材の模式図である。複数の板状部材３０ａ、ｂ、ｃを重ね合わせて衝撃緩衝材１ｃを構成できる。また、複数の板状部材３０ｄ、ｅ、ｆを重ね合わせて衝撃緩衝材１ｄを構成することもできる。それぞれの板状部材３０は、射出成形などの高度な成形技法を用いずに容易に製造できるので、効率的かつ安価に衝撃緩衝材を製造できる。 FIG. 7 and FIG. 8 are schematic diagrams of a shock absorbing material configured by stacking a plurality of flat plates. A plurality of plate-shaped members 30a, 30b, and 30c can be superimposed to form the shock absorbing material 1c. Also, a plurality of plate members 30d, 30e, and 30f may be superimposed to form the impact cushioning material 1d. Since each plate member 30 can be easily manufactured without using advanced molding techniques such as injection molding, the impact cushioning material can be manufactured efficiently and inexpensively.

図９は、被包装体の収容空間を有さない衝撃緩衝材の斜視図である。この衝撃緩衝材１ｅは、平板状のベース構造部１０ｅと、前記ベース構造部１０ｅの一方の面に設けられた衝撃緩衝用リブ構造２０ｅから構成される。 FIG. 9 is a perspective view of a shock absorbing material that does not have an accommodation space for an object to be packaged. The shock absorbing material 1e is composed of a flat plate-shaped base structure 10e and a shock absorbing rib structure 20e provided on one surface of the base structure 10e.

この衝撃緩衝用リブ構造２０ｅは、ベース構造部１０ｅに支持され、立方体又は直方体形状を有する主緩衝部１２と、両端部でベース構造部１０に支持され、両端部の間がベース構造部１０から離間する形状を有する補助緩衝部１４ｅとで構成される。 This impact-absorbing rib structure 20e is supported by the base structure 10e and has a main cushioning portion 12 having a cubic or rectangular parallelepiped shape, and both ends thereof are supported by the base structure 10. It is composed of an auxiliary cushioning portion 14e having a spaced apart shape.

この衝撃緩衝材１ｅは、ベース構造部１０ｅが被包装体の収容空間を有していない点で、先の図２の衝撃緩衝材１と異なる。衝撃緩衝材１ｅは、平面状に形成した衝撃緩衝用リブ構造２０ｅが被包装体に当接して装着されることで、被包装体にかかる衝撃を緩衝する。 This shock absorbing material 1e is different from the shock absorbing material 1 shown in FIG. The shock-absorbing material 1e absorbs the shock applied to the object to be packaged by attaching the planar shock-absorbing rib structure 20e to the object to be packaged.

この構成においても、先の図２で示したのと同様に、補助緩衝部１４ｅと、主緩衝部１２とで複合応力作用を生じさせ、従来仕様（図１参照）以上の衝撃吸収効率で衝撃を緩衝し、被包装体に掛かる最大衝撃力を低減できる。 2, the auxiliary cushioning portion 14e and the main cushioning portion 12 produce a combined stress action, and the impact absorption efficiency is higher than that of the conventional specification (see FIG. 1). and reduce the maximum impact force applied to the packaged object.

図１０は、補助緩衝部の形状バリエーションを示す斜視図である。補助緩衝部１４は、装着する被梱包体、及び／又は想定される衝撃に即して、様々な形状を取ることができる。 FIG. 10 is a perspective view showing variations in the shape of the auxiliary cushioning portion. The auxiliary cushioning part 14 can take various shapes according to the packaged object to be attached and/or the expected impact.

（ａ）に示す補助緩衝部１４は、垂直に設けられた２つの支柱部１６と、それら支柱部１６に支持され、ベース構造部１０の面に対し、離間して水平に設けられた梁部１８とから構成されている。この補助緩衝部１４は、水平に設けられた梁部１８が等分布荷重を受ける構造であり、局部荷重を受ける場合に曲げ応力が大きく作用する効果が得られる。これは、質量の大きい被包装体に適している。 The auxiliary cushioning portion 14 shown in (a) includes two vertically provided strut portions 16 and a beam portion supported by the strut portions 16 and horizontally provided at a distance from the surface of the base structure portion 10. 18. The auxiliary cushioning portion 14 has a structure in which a horizontally provided beam portion 18 receives an evenly distributed load, and when a local load is received, a large bending stress acts. This is suitable for objects to be packaged with a large mass.

（ｂ）に示す補助緩衝部１４は、それぞれベース構造部の面に対して斜めに設けられ、互いに交わる２つの支柱部１６で構成されている。この補助緩衝部１４は、局部荷重を受けると曲げ作用が起きやすく、小さい曲げ応力を作用させることができる。これは、質量の小さい被包装体に適している。 The auxiliary cushioning portion 14 shown in (b) is provided obliquely with respect to the surface of the base structure portion, and is composed of two strut portions 16 that intersect with each other. The auxiliary cushioning portion 14 is likely to bend when receiving a local load, and can act with a small bending stress. This is suitable for packages with low mass.

（ｃ）に示す補助緩衝部１４は、それぞれベース構造部の面に対して斜めに設けられた２つの支柱部１６と、２つの支柱部１６に支持され、ベース構造部１０の面に対し、水平に設けられた梁部１８とから構成されている。この補助緩衝部１４は、水平に設けられた梁部１８が等分布荷重を受ける構造である一方、２つの支柱部１６は、それら支柱間の距離が長くなることで、曲げ作用が起きやすく、小さい曲げ応力を作用させることができる。これも、質量の小さい被包装体に適している。 The auxiliary cushioning portion 14 shown in (c) is supported by two strut portions 16 provided obliquely with respect to the surface of the base structure portion, and by the two strut portions 16. It is composed of a horizontally provided beam portion 18 . The auxiliary cushioning section 14 has a structure in which a horizontally provided beam section 18 receives an evenly distributed load. A small bending stress can be applied. This is also suitable for packages with low mass.

（ｄ）、（ｅ）、（ｆ）に示す補助緩衝部１４は、その長手方向に２つ以上連なって設けられている。これら補助緩衝部１４は、各々の支持部間の距離が短くなるため、曲げ応力が大きく作用する効果が得られやすくなる。これは、質量の大きい被包装体に適している。 Two or more of the auxiliary cushioning portions 14 shown in (d), (e), and (f) are provided continuously in the longitudinal direction. Since the distance between each supporting portion is short in these auxiliary buffering portions 14, it is easy to obtain the effect of a large bending stress acting thereon. This is suitable for objects to be packaged with a large mass.

図１１は、主緩衝部に変形を加えた衝撃緩衝材の斜視図である。主緩衝部１２ｆは、長手方向の両端の側面に勾配が設けられ、主緩衝部１２ｆのベース構造部１０に支持される底面の面積が、上面の面積よりも大きい。すなわち、主緩衝部１２ｆは、テーパを有する構造となっている。 FIG. 11 is a perspective view of the impact cushioning material in which the main cushioning portion is deformed. The main cushioning portion 12f has inclined side surfaces at both ends in the longitudinal direction, and the area of the bottom surface of the main cushioning portion 12f supported by the base structure portion 10 is larger than the area of the top surface. That is, the main buffer portion 12f has a tapered structure.

主緩衝部１２ｆの圧縮変形が進むにつれ、圧縮部分の面積が増加するため、より大きくの衝撃エネルギーを吸収することができる。なお、主緩衝部１２ｆは、少なくとも１組の対向する側面に勾配を設けるとしてもよい。 As the compressive deformation of the main cushioning portion 12f progresses, the area of the compressed portion increases, so that larger impact energy can be absorbed. It should be noted that at least one pair of opposing side surfaces of the main buffer portion 12f may be sloped.

図１２は、補助緩衝部の変形部分を収容する開口部を有する衝撃緩衝材の斜視図である。図１２に示すように、ベース構造部１０ｇは、補助緩衝部１４の鉛直方向直下に開口部８を有している。補助緩衝部１４が曲げ変形した際、その変形部分が開口部８に収容されることになる（図１３参照）。補助緩衝部１４が著しく変形した場合でも、圧縮変形のみの状態に陥らず、狙いの曲げ変形状態をとることができるため、主緩衝部１２とともに複合応力を生成することができる。 FIG. 12 is a perspective view of an impact cushioning material having an opening for accommodating a deformed portion of the auxiliary cushioning portion; As shown in FIG. 12, the base structural portion 10g has an opening 8 directly below the auxiliary cushioning portion 14 in the vertical direction. When the auxiliary cushioning portion 14 is bent and deformed, the deformed portion is accommodated in the opening portion 8 (see FIG. 13). Even when the auxiliary cushioning portion 14 is significantly deformed, it does not fall into a state of only compressive deformation, but can assume a targeted bending deformation state, so that combined stress can be generated together with the main cushioning portion 12 .

これら衝撃緩衝材１、（１ａ～１ｇ）は、発泡樹脂緩衝材で形成することが望ましい。ただし、これに限定するものではない。 These impact cushioning materials 1, (1a to 1g) are desirably made of foamed resin cushioning material. However, it is not limited to this.

本実施形態の衝撃緩衝材は、被包装体としての画像形成装置（例えば、複写機、印刷機など）に装着し、包装材（例えば、段ボール箱）に梱包される。この包装材は、荷造機械設備などを包括して備える包装システムに用いられる。 The shock absorbing material of the present embodiment is attached to an image forming apparatus (for example, a copying machine, a printing machine, etc.) as an object to be packaged, and packed in a packaging material (for example, a cardboard box). This packaging material is used in a packaging system including packaging machinery and equipment.

（比較検証試験）
従来仕様の衝撃緩衝材と本発明仕様の衝撃緩衝材とで、衝撃加速度の比較検証試験を行った。
検証方法：同じ緩衝距離において、従来仕様（図１）と本発明仕様（図２）における衝撃加速度を比較した。
条件：衝撃緩衝材は、発泡ポリエチレン（ＥＰＥ：見かけ密度２２．５ｋｇ／ｍ３品）を用いた。
結果：表１に示すように、本発明仕様の平均衝撃加速度は、従来仕様のよりも約２０％低くなるという結果を得た。 (Comparative verification test)
A comparative verification test of impact acceleration was carried out between the impact cushioning material of the conventional specification and the impact cushioning material of the specification of the present invention.
Verification method: At the same cushioning distance, the impact acceleration was compared between the conventional specification (Fig. 1) and the present invention specification (Fig. 2).
Conditions: Polyethylene foam (EPE: apparent density of 22.5 kg/m, 3 products) was used as the impact cushioning material.
Results: As shown in Table 1, the average impact acceleration of the specifications of the present invention was about 20% lower than that of the conventional specifications.

Figure 2023009855000002
Figure 2023009855000002

以上、実施形態を用いて本発明を詳細に説明した。この実施形態は一例であり、要旨を逸脱しない範囲内で種々変更して使用できる。例えば、複数の実施形態をそれぞれ組み合わせてもよい。 The present invention has been described in detail above using the embodiments. This embodiment is an example, and can be used with various modifications within the scope of the invention. For example, multiple embodiments may be combined.

１、１ａ、１ｂ、１ｃ、１ｄ、１ｅ 衝撃緩衝材
５ 収容空間
８ 開口部
１０、１０ｅ、１０ｇ ベース構造部
１２、１２ｆ 主緩衝部
１４、１４ｅ 補助緩衝部
１６ 支柱部
１８ 梁部
２０、２０ｅ 衝撃緩衝用リブ構造
３０ａ～ｆ 板状部材 1, 1a, 1b, 1c, 1d, 1e shock absorbing material 5 accommodation space 8 opening 10, 10e, 10g base structure 12, 12f main buffer 14, 14e auxiliary buffer 16 strut 18 beam 20, 20e impact Buffer rib structure 30a-f plate-like member

特開平０９－３２８１７２号公報JP-A-09-328172

Claims (17)

被包装体の収容空間を有するベース構造部と、前記ベース構造部の少なくとも一面に設けられた衝撃緩衝用リブ構造から構成される衝撃緩衝材において、
前記衝撃緩衝用リブ構造が、
前記ベース構造部に支持され、立方体又は直方体形状を有する主緩衝部と、
両端部で前記ベース構造部に支持され、前記両端部の間が前記ベース構造部から離間した形状を有する補助緩衝部とで構成されることを特徴とする衝撃緩衝材。 A shock-absorbing material comprising a base structure having a space for accommodating an object to be packaged and a shock-absorbing rib structure provided on at least one surface of the base structure,
The impact-absorbing rib structure is
a main cushioning portion supported by the base structure portion and having a cubic or rectangular parallelepiped shape;
An impact cushioning material characterized by comprising an auxiliary cushioning portion which is supported at both ends by the base structure and has a shape in which the space between the both ends is spaced apart from the base structure. 前記主緩衝部及び前記補助緩衝部が、前記ベース構造部の一面にそれぞれ少なくとも１つ以上設けられることを特徴とする請求項１に記載の衝撃緩衝材。 2. The impact cushioning material according to claim 1, wherein at least one main cushioning portion and at least one auxiliary cushioning portion are provided on one surface of the base structure portion. 前記主緩衝部及び前記補助緩衝部が、前記ベース構造部の複数の面に設けられることを特徴とする請求項１又は２に記載の衝撃緩衝材。 3. The impact cushioning material according to claim 1, wherein the main cushioning portion and the auxiliary cushioning portion are provided on a plurality of surfaces of the base structure portion. 前記主緩衝部及び前記補助緩衝部が、前記ベース構造部の５つの面に、それぞれ設けられることを特徴とする請求項３に記載の衝撃緩衝材。 4. The impact cushioning material according to claim 3, wherein the main cushioning portion and the auxiliary cushioning portion are provided on five surfaces of the base structure portion, respectively. 前記主緩衝部が、前記ベース構造部の同一面上にある２つの前記補助緩衝部の間に設けられることを特徴とする請求項１乃至４のいずれか一項に記載の衝撃緩衝材。 5. The impact cushioning material according to any one of claims 1 to 4, wherein the main cushioning portion is provided between the two auxiliary cushioning portions on the same plane of the base structure portion. 前記補助緩衝部が、前記ベース構造部の同一面上にある２つの前記主緩衝部の間に設けられることを特徴とする請求項１乃至５のいずれか一項に記載の衝撃緩衝材。 6. The impact cushioning material according to any one of claims 1 to 5, wherein the auxiliary cushioning portion is provided between two of the main cushioning portions on the same plane of the base structure portion. 複数の板状部材を重ね合わせて構成されたことを特徴とする請求項１乃至６のいずれか一項に記載の衝撃緩衝材。 7. The shock absorbing material according to any one of claims 1 to 6, wherein the shock absorbing material is constructed by stacking a plurality of plate-like members. 平板状のベース構造部と、前記ベース構造部の一方の面に設けられた衝撃緩衝用リブ構造から構成される衝撃緩衝材において、
前記衝撃緩衝用リブ構造が、
前記ベース構造部に支持され、立方体又は直方体形状を有する主緩衝部と、
両端部で前記ベース構造部に支持され、前記両端部の間が前記ベース構造部から離間する形状を有する補助緩衝部とで構成され、かつ、被包装体に当接して装着されることを特徴とする衝撃緩衝材。 A shock-absorbing material composed of a flat plate-shaped base structure and a shock-absorbing rib structure provided on one surface of the base structure,
The impact-absorbing rib structure is
a main cushioning portion supported by the base structure portion and having a cubic or rectangular parallelepiped shape;
It is supported by the base structure at both ends, and has an auxiliary cushioning part having a shape that is spaced apart from the base structure between the both ends, and is mounted in contact with the object to be packaged. shock-absorbing material. 前記補助緩衝部は、
前記ベース構造部の面に対し、垂直に設けられた２つの支柱部と、
前記２つの支柱に支持され、前記ベース構造部の面に対し、離間して水平に設けられた梁部とから構成されることを特徴とする請求項１乃至８のいずれか一項に記載の衝撃緩衝材。 The auxiliary buffer part is
two struts provided perpendicular to the plane of the base structure;
9. The structure according to any one of claims 1 to 8, further comprising a beam supported by said two pillars and provided horizontally with a distance from the surface of said base structure. shock absorber. 前記補助緩衝部は、
それぞれ前記ベース構造部の面に対して斜めに設けられ、互いに交わる２つの支柱部で構成されることを特徴とする請求項１乃至８のいずれか一項に記載の衝撃緩衝材。 The auxiliary buffer part is
9. The shock absorbing material according to any one of claims 1 to 8, characterized in that it comprises two struts which are provided obliquely with respect to the surface of said base structure and intersect with each other. 前記補助緩衝部は、
それぞれ前記ベース構造部の面に対して斜めに設けられた２つの支柱部と、
前記２つの支柱に支持され、前記ベース構造部の面に対し、水平に設けられた梁部とから構成されることを特徴とする請求項１乃至８のいずれか一項に記載の衝撃緩衝材。 The auxiliary buffer part is
two struts each obliquely provided with respect to the plane of the base structure;
9. The shock absorbing material according to any one of claims 1 to 8, further comprising a beam supported by said two pillars and provided horizontally with respect to the surface of said base structure. . 前記補助緩衝部は、その長手方向に２つ以上連なって設けられることを特徴とする請求項１乃至１１のいずれか一項に記載の衝撃緩衝材。 The impact cushioning material according to any one of claims 1 to 11, wherein two or more of the auxiliary cushioning parts are provided continuously in the longitudinal direction. 前記ベース構造部に支持される前記主緩衝部は、少なくとも１組の対向する側面に勾配が設けられ、
前記主緩衝部の前記ベース構造部に支持される底面の面積は、前記主緩衝部の上面の面積よりも大きいことを特徴とする請求項１乃至１２のいずれか一項に記載の衝撃緩衝材。 the main buffer supported by the base structure has at least one pair of opposing sides sloped;
The shock absorbing material according to any one of claims 1 to 12, wherein the area of the bottom surface of the main cushioning portion supported by the base structure portion is larger than the area of the top surface of the main cushioning portion. . 前記ベース構造部は、前記補助緩衝部の鉛直方向直下に、開口部を有することを特徴とする請求項１乃至１３のいずれか一項に記載の衝撃緩衝材。 14. The impact cushioning material according to any one of claims 1 to 13, wherein the base structure has an opening directly below the auxiliary cushioning portion in the vertical direction. 発泡樹脂緩衝材で形成されていることを特徴とする請求項１乃至１４のいずれか一項に記載の衝撃緩衝材。 15. The impact cushioning material according to any one of claims 1 to 14, wherein the impact cushioning material is made of a foamed resin cushioning material. 請求項１乃至１５のいずれか一項に記載の衝撃緩衝材が装着された被包装体を梱包する包装材。 A packaging material for packaging an object to which the shock absorbing material according to any one of claims 1 to 15 is attached. 請求項１６に記載の包装材を用いる包装システム。 A packaging system using the packaging material of claim 16.
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