JP2008308173A - Packing cushioning material - Google Patents

Abstract

Provided is a packing cushioning member that exhibits a superior buffering effect of external force when an external force is applied to a transport container.
In a packing cushioning member for packing an object to be transported in a transport container, a frame for holding the object to be transported, a projecting outward from the frame, and the frame 10 and a first external force buffer arm 20 for elastically supporting the object to be transported in the transport container through the first external force buffer arm 20, and external force is applied to the first external force buffer arm 20 through the transport container. Then, it has a structure that deforms in a direction different from the direction in which the external force is applied.
[Selection] Figure 1

Description

  The present invention relates to a packing buffer member for packing an object to be transported in a transport container, and more particularly, to a packing buffer member for packing a case containing an electrical component in a transport container.

  An HGA (head gimbal assembly) for a hard disk drive is formed by forming a thin suspension and is easily deformed by an external force, so it must be handled with care during transportation. Therefore, conventionally, a packing buffer member (buffer material) for storing an object to be transported (inner layer container) containing electrical parts such as HGA in a transport container (outer layer container) is known (for example, Patent Document 1).

The conventional packing cushioning member (buffer material) fits and holds the object to be transported (inner layer container) in the holding recess provided in the base, and projects radially from the base toward the transport container (outer layer container). It is supported in the transfer container (outer layer container) by the buffer bumps. As described above, the packing cushioning member (buffering material) fits and holds the object to be transported (inner layer container) in the holding recess of the base body, and projects radially from the base body toward the transport container (outer layer container). Since the buffer protrusion is supported in the transfer container (outer layer container), even when an external force is applied to the transfer container (outer layer container), the external force is buffered by the expansion and contraction of the buffer protrusion, and is also buffered by the buffer protrusion. Even if a shock that cannot be fully applied is applied to the object to be transported (inner layer container), the buffer protrusion absorbs vibration caused by the impact, and damage to electrical components in the object to be transported (inner layer container) can be suppressed or prevented.
JP 2003-262324 A

  Even when an external force is applied to the transport container as in the packing buffer member of Patent Document 1, inventions that can buffer the external force have been made so far, but still more excellent buffering effect of the external force is still present. A packing cushioning member having been desired.

  This invention is made | formed in view of said point, Comprising: When external force is added to a conveyance container, it aims at providing the buffer member for packing which expresses the buffer effect of the more excellent external force.

  In order to solve the above-described problems, the present invention is characterized by the following measures.

According to the first invention, in the cushioning member for packing for packing the object to be transported in the transport container,
A frame for holding the conveyed object;
A first external force buffer arm that protrudes outward from the frame and elastically supports the object to be transported in the transport container via the frame;
When the external force is applied to the first external force buffer arm via the transfer container, a packing buffer member having a structure that deforms in a direction different from the direction in which the external force is applied is provided.

  Moreover, according to 2nd invention, it is the buffering member for packing which concerns on 1st invention, Comprising: The said 1st external force buffer arm provides the buffering member for packing which has a taper surface on one side surface.

  Further, according to the third invention, there is provided a packing cushioning member according to the first or second invention, wherein the frame has a structure for holding a corner portion of the object to be conveyed. Is done.

  According to a fourth aspect of the invention, there is provided the packing cushioning member according to any one of the first to third aspects, wherein the frame is framed in a lattice shape along six directions in which the rod-like bodies are orthogonal to each other. A cushioning member for packing having a structure for holding the object to be transported in a room in which adjacent rooms are hollow among a plurality of rooms partitioned by the rod-shaped body. The

Moreover, according to 5th invention, it is the buffering member for packing which concerns on any one 1st-4th invention, Comprising: The link part which protruded toward the outer side from the said frame, The said adjacent link A second external force buffer arm for elastically supporting the object to be transported in the transport container via the frame,
When the external force is applied through the transfer container, the second external force buffer arm is provided with a packing buffer member having a structure that deforms in a direction different from the direction in which the external force is applied.

  According to a sixth aspect of the present invention, the packing cushioning member according to the fifth aspect of the present invention is such that the adjacent link portions connected by the connecting portion are inclined relatively in the longitudinal direction. A packing cushioning member is provided.

  According to the seventh invention, the cushioning member for packing according to any one of the first to sixth inventions, wherein the first external force buffering arm is directed in six directions orthogonal to the frame. A protruding cushioning member is provided.

  Moreover, according to 8th invention, it is the buffering member for packing which concerns on any one 1st-7th invention, Comprising: The buffering member for packing currently shape | molded with the foamed polyethylene is provided.

  According to the present invention, when an external force is applied via the transport container, the first external force buffer arm is deformed in a direction different from the direction in which the external force is applied, thereby exhibiting a more excellent external force buffering effect. Can do.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. 1A and 1B are views showing a structure of a cushioning member 1 for packing according to an embodiment of the present invention. FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. As shown in FIG. 1, the cushioning member 1 for packing includes a frame 10 for holding an HGA case (not shown) as an object to be conveyed, and a first external force buffering projecting outward from the frame 10. The arm 20 and the second external force buffer arm 30 are configured. The first external force buffer arm 20 and the second external force buffer arm 30 have a structure that elastically supports the HGA case in a transport container (not shown) via the frame 10, and are applied via the transport container. Buffer external force. Hereinafter, each configuration will be described in detail.

  The frame 10 has a structure in which a rod-shaped body 10a having a substantially rectangular cross section is framed in a lattice shape along six directions perpendicular to each other, that is, up, down, left, right, front, and rear (see FIG. 1). Yes. The frame 10 is framed in a lattice shape and is thinned, so that it is possible to reduce the carrying weight at the time of transportation and to reduce the impact force at the time of dropping. For this reason, it is possible to suppress or prevent damage to the HGA housed in the HGA case.

  Each room divided by the rod-shaped body 10a is classified into an HGA case room 11 for holding the HGA case and a hollow room 12 for separating the HGA case rooms 11 from each other. In FIG. 1, a room indicated by a one-dot chain line is one of the HGA case rooms 11.

  The outer dimension of the HGA case room 11 is set to be slightly smaller than the outer dimension of the HGA case, and when the HGA case is held in the HGA case room 11, the frame 10 is slightly elastically deformed, thereby causing rattling. Suppressed or prevented.

  The frame 10 surrounding the HGA case room 11 has a structure 13 for holding the corners of the HGA case. In this embodiment, as shown in FIG. 1, the structure 13 for holding the corners of the HGA case sandwiches the corners of the HGA case having a substantially L shape, that is, the corners of the HGA case. This is realized by arranging two rod-like bodies 10a having a substantially square cross section so as to press the two outer surfaces forming the part.

  Thus, by holding the corners of the HGA case, the contact area between the frame 10 and the HGA case can be reduced, and the transmission of external force to the HGA case via the frame 10 can be suppressed. it can. For this reason, by holding the corners of the HGA case, it is possible to suppress or prevent damage to the HGA accommodated in the HGA case.

  Even if the frame 10 is deformed, the hollow chamber 12 is disposed so as to separate a plurality of HGA case chambers 11 as shown in FIG. 1 in order to suppress or prevent contact between the HGA cases. Further, when an external force is applied to the frame 10 surrounding the hollow chamber 12, the external force can be buffered by being deformed in a direction different from the direction in which the external force is applied. For these reasons, it is possible to suppress the transmission of external force between the HGA cases, and it is possible to suppress or prevent damage to the HGA accommodated in the HGA case.

  The cross-sectional shape of the frame 10 having the HGA case room 11 and the hollow room 12, the distance between the HGA case rooms 11, and the like are the magnitude of the external force applied through the transfer container, and the HGA case that is the object to be transferred. It is designed according to the weight of the container and the outer dimensions of the transport container.

  The first external force buffer arm 20 is a rod-shaped body having a rectangular cross section, and protrudes from the frame 10 upward, downward, front, and rearward at predetermined intervals. The first external force buffer arm 20 elastically supports the HGA case in the transport container via the frame 10 by being elastically contacted with the inner wall in the transport container when packing is completed.

  In this way, since the first external force buffer arm 20 is elastically contacted with the transport container at predetermined intervals, the contact area between the first external force buffer arm 20 and the transport container can be reduced, and the first The external force buffer arm 20 is bent to absorb the impact. Thereby, it can suppress that external force is transmitted to the 1st external force buffer arm 20 via a conveyance container. For this reason, it is possible to suppress or prevent damage to the HGA housed in the HGA case.

  When an external force is applied via the transport container, the first external force buffer arm 20 is deformed in a direction B different from the external force application direction A, that is, the deformation direction A of the transport container, as shown in FIG. It has a structure. In FIG. 2, a state indicated by a solid line is a natural state of the first external force buffer arm 20, and a state indicated by a two-dot chain line is a state where an external force is applied to the first external force buffer arm 20. Here, the external force is, for example, vibration at the time of transportation, impact at the time of dropping, or load of other transported objects loaded on the transport container. Here, “deforming” in a direction B different from the deformation direction A of the transport container is not limited to elastically bending in a direction B different from the deformation direction A of the transport container, but buckles, for example. Including vibration.

  Since the first external force buffer arm 20 is deformed in the direction B different from the deformation direction A of the transport container, it becomes easier to follow the deformation of the transport container as compared to the case of deforming in the same direction A. Even when the transfer container is plastically deformed, the stress generated along with the plastic deformation can be reduced. Further, the first external force buffer arm 20 is deformed in a direction B different from the deformation direction A of the transport container, so that the HGA case can be moved relative to the transport container at the time of collision as compared with the case of the deformation in the same direction A. Since the distance becomes long, for example, even when the transport container is dropped, the speed change of the HGA case at the time of the collision can be moderated, and the acceleration at the time of the collision can be reduced. Further, since the first external force buffer arm 20 is deformed in the direction B different from the deformation direction A of the transport container, the vibration can be absorbed even when the transport container receives vibration.

  As described above, the first external force buffer arm 20 is deformed in the direction B different from the direction A in which the external force is applied, so that a more excellent external force buffering effect can be obtained, and the HGA stored in the HGA case is damaged. Can be suppressed or prevented.

  The first external force buffer arm 20 is deformed in a direction B different from the external force application direction A and deformed in the same direction A as the external force application direction A when an external force is applied via the transfer container. May be. By expanding and contracting in the same direction A as the external force application direction A, an external force buffering effect can be obtained.

  The first external force buffer arm 20 may have a tapered surface 20a on one side surface. When the first external force buffer arm 20 has the tapered surface 20a, the cross section substantially perpendicular to the longitudinal direction becomes thin in the specific direction, and therefore, the first external force buffer arm 20 is easily deformed in the specific direction. For this reason, the deformation | transformation direction of the 1st external force buffer arm 20 can be controlled because the 1st external force buffer arm 20 has the taper surface 20a.

  The tapered surface 20a may have a shape that becomes thinner in a specific direction as it goes from the frame 10 to the tip, or may have a shape that becomes thicker in a specific direction. Alternatively, it may be a shape that becomes thinner to a predetermined position as it goes from the frame 10 to the tip, and becomes thicker if it exceeds a predetermined position. In the case of a shape that becomes thicker in the specific direction as it goes from the frame 10 to the tip, it becomes easier to be deformed in the specific direction as compared to the opposite case, but since it deforms with the vicinity of the frame 10 as a fulcrum, the first external force The external force applied to the frame 10 via the buffer arm 20 is increased.

  The cross-sectional shape, length, installation interval, and the like of the first external force buffer arm 20 depend on the magnitude of the external force applied via the transport container, the weight of the HGA case that is the object to be transported, the outer dimensions of the transport container, and the like. Designed accordingly.

  The second external force buffer arm 30 includes link portions 30a and 30b projecting outward from the frame 10 and a connecting portion 30c that connects the tip portions of the adjacent link portions 30a and 30b. From the left to the right, the projection is provided in a substantially “U” shape at predetermined intervals. When the packaging is completed, the second external force buffer arm 30 elastically supports the HGA case in the transport container via the frame 10 by being elastically contacted with the inner wall in the transport container.

  In this way, since the second external force buffer arm 30 is elastically contacted with the transport container at predetermined intervals, the contact area between the second external force buffer arm 30 and the transport container can be reduced, and the second The external force buffer arm 30 is bent to absorb the impact. Thereby, it can suppress that external force is transmitted to the 2nd external force buffer arm 30 via a conveyance container. For this reason, it is possible to suppress or prevent damage to the HGA housed in the HGA case.

  In addition, the connection part 30c may connect abdomen parts instead of connecting the front-end | tip parts of a pair of link parts 30a and 30b. By connecting the abdomen, the contact area between the second external force buffer arm 30 and the transport container can be reduced, and the second external force buffer arm 30 is bent to absorb the impact. Thereby, it can suppress that external force is transmitted to the 2nd external force buffer arm 30 via a conveyance container. For this reason, it is possible to suppress or prevent damage to the HGA housed in the HGA case.

When the external force is applied to the second external force buffer arm 30 via the transfer container, FIG.
As shown in FIG. 4, the structure has a structure that deforms in a direction D different from the direction C in which external force is applied, that is, the direction C of deformation of the transport container. In FIG. 2, the state indicated by a solid line is the natural state of the second external force buffer arm 30, and the state indicated by a two-dot chain line is a state where an external force is applied to the second external force buffer arm 30.

  Since the second external force buffer arm 30 is deformed in the direction D different from the deformation direction C of the transport container, it becomes easier to follow the deformation of the transport container as compared to the case of deforming in the same direction D. Even when the transfer container is plastically deformed, the stress generated along with the plastic deformation can be reduced. In addition, the second external force buffer arm 30 is deformed in a direction D different from the deformation direction C of the transport container, so that the HGA case can be moved relative to the transport container at the time of collision as compared with the case of deformation in the same direction D. Since the distance becomes long, for example, even when the transport container is dropped, the speed change of the HGA case at the time of collision can be alleviated, and the acceleration at the time of collision can be reduced. Further, since the second external force buffer arm 30 is deformed in the direction D different from the deformation direction C of the transport container, the vibration can be absorbed even when the transport container receives vibration.

  As described above, the second external force buffer arm 30 is deformed in the direction D different from the deformation direction C of the transport container, so that a more excellent external force buffering effect can be obtained, and the HGA case housed in the HGA case can be obtained. Damage can be suppressed or prevented.

  Similarly to the first external force buffer arm 20, the second external force buffer arm 30 is deformed in a direction D different from the direction C in which the external force is applied when an external force is applied through the transfer container. It may be deformed in the same direction D as the direction C in which the external force is applied. By expanding and contracting in the same direction D as the external force application direction C, an external force buffering effect is obtained.

  Unlike the first external force buffer arm 20, the second external force buffer arm 30 is connected to adjacent link portions 30a and 30b by a connecting portion 30c. Therefore, the second external force buffer arm 30 is less likely to be deformed than the first external force buffer arm 20.

  By the way, when the box-shaped transport container falls, the impact force per unit area at the time of collision depends on the dropping direction. The reason is that the weight of the object to be conveyed is constant regardless of the dropping direction, but the areas of the upper and lower surfaces, the left and right surfaces, and the front and rear surfaces of the box-shaped conveyance container are different. Therefore, when falling from the left and right surfaces with the smallest area, the impact force per unit area at the time of collision is the largest. Therefore, in the present embodiment, the second external force buffer arm 30 that is not easily deformed is arranged toward the left and right where the impact force per unit area at the time of collision is the largest, so that it is possible to prepare for a strong impact. As described above, the second external force buffer arm 30 is arranged according to the external force applied via the transport container.

  The adjacent link parts 30a and 30b connected by the connection part 30c may be arrange | positioned so that the longitudinal direction may incline relatively diagonally, as shown in FIG. The link part 30a of this embodiment extends along the left-right direction, the connection part 30c extends along the front-rear direction from one end of the link part 30a, and the link part 30b links from one end of the connection part 30c. It extends obliquely with respect to the longitudinal direction of the portion 30a. If the adjacent link portions 30a and 30b are arranged so that the longitudinal directions thereof are inclined relatively, it is easy to deform in a specific direction. For this reason, the deformation direction of the second external force buffer arm 30 can be controlled.

  The cross-sectional shape (hereinafter referred to as “the cross-sectional shape of the second external force buffer arm 30”), the length, the installation interval, and the like of the link portions 30a and 30b and the connecting portion 30c constituting the second external force buffer arm 30 are as follows. It is designed according to the magnitude of the external force applied via the HGA, the weight of the HGA case that is the object to be transported, the outer dimensions of the transport container, and the like.

  The packing cushioning member 1 composed of the frame 10, the first external force buffering arm 20, and the second external force buffering arm 30 is formed of, for example, foamed polyethylene, foamed polystyrene, or foamed propylene. Since these materials have fine holes inside, they can not only reduce the transport weight during transportation, but also can apply the external force application direction A to the first external force buffer arm 20 and the second external force buffer arm 30. , C can be easily deformed in different directions B and D. Moreover, although the buffer member 1 for packing may be shape | molded using a metal mold | die, it may be shape | molded by adhere | attaching the cut | disconnected square material using an adhesive agent or a heat | fever. Moreover, although the buffering member 1 for packing may be shape | molded without a cut | interruption, as long as a to-be-conveyed object can be packed, it may be shape | molded, for example by dividing into 2 up-down directions. The cushioning member 1 for packing can improve the workability | operativity at the time of packing by being divided | segmented.

  Next, examples according to the present invention will be described in comparison with comparative examples.

[Embodiment] As shown in FIG. 3, the packing cushioning member 1 has eight stacked HGA cases 20 to be transported and vacuum packed (weight 0.75 kg / piece, outer dimensions 112 × 145 × 100 mm / piece) was packed in a cardboard box (outer dimensions 848 × 550 × 290 mm) as a transport container, and a drop impact test was performed. As shown in FIG. 3, an acceleration sensor (product name “G-MEN” manufactured by Slick Co., Ltd.) is obtained by punching out the HGA case into one of eight pieces of HGA cases stacked in 20 stages and vacuum packed. )).
[Measurement object]
Buffer material for packing Expanded polystyrene (trade name “Suntech Home Q25” manufactured by Asahi Kasei Co., Ltd.)
Rebound resilience 34%, hardness 29-32 degrees (JIS K6767)
Longitudinal length X1 of the first external force buffer arm 20 and the second external force buffer arm 30
(Hereinafter referred to as “arm length X1”) 80 mm
Distance Y between adjacent HGA case rooms 11
(Hereinafter referred to as “distance Y between cases”) 70 mm
Cross section Z1 of frame 10 15 mm
Sectional shape Z2 of the first external force buffer arm 20 extending in the up-down direction 19 mm
Cross-sectional shape Z3 19 mm of the first external force buffer arm 20 extending in the front-rear direction
Inclination angle α of taper surface 20a 77 °
Sectional shape Z4 of the second external force buffer arm 30 extending in the left-right direction 19 mm
Length of connecting part 30c X2 41mm
Inclination angle β 70 ° of link portion 30b
[Measurement condition]
Dropping posture 6 (top, bottom, left side, right side, front, back)
Fall height 80cm
Falling floor Concrete repetition times Once for each dropping posture [Comparative example] The packing buffer member 4 (Styrofoam) of the comparative example shown in FIG. Eight pieces (weight 0.75 kg / piece, outer dimensions 112 x 145 x 100 mm / piece) were dropped in the same manner as in Example 1 except that they were packed in a cardboard box (outer dimensions 540 x 390 x 360 mm) as a transport container. An impact test was performed.

  The results of the drop impact test of Example 1 and the comparative example are shown in Table 1.

表１に示すように、比較例では、衝突時のＨＧＡケースの加速度の最大値は３５Ｇであった。これに対し、実施例１では、衝突時のＨＧＡケースの加速度の最大値は１５Ｇであり、最大値が比較的小さかった。また、比較例では、衝突時のＨＧＡケースの加速度の変動幅が８Ｇ〜３５Ｇの間であったのに対し、実施例１では、衝突時のＨＧＡケースの加速度の変動幅が６Ｇ〜１５Ｇであり、変動幅が小さかった。このように、実施例１の梱包用緩衝部材１と比較例の梱包用緩衝部材３とでは、外力の緩衝効果に差違が認められ、本発明の梱包用緩衝部材が優れた外力の緩衝効果を有することが確認された。

As shown in Table 1, in the comparative example, the maximum acceleration of the HGA case at the time of collision was 35G. On the other hand, in Example 1, the maximum value of the acceleration of the HGA case at the time of collision was 15 G, and the maximum value was relatively small. In the comparative example, the fluctuation range of the acceleration of the HGA case at the time of the collision was between 8G and 35G, whereas in Example 1, the fluctuation range of the acceleration of the HGA case at the time of the collision was 6G to 15G. The fluctuation range was small. Thus, a difference is recognized in the buffering effect of the external force between the packing buffer member 1 of Example 1 and the packing buffer member 3 of the comparative example, and the packing buffer member of the present invention has an excellent external force buffering effect. It was confirmed to have.

  Next, optimization of the cross-sectional shape Z1 of the frame 10 and the inter-case distance Y will be described. A drop impact test was performed in the same manner as in Example 1 except that the cross-sectional shape Z1 and the case distance Y were set as shown in Table 2 and the drop posture was the left side. The outer dimensions of the cardboard box corresponded to the cross-sectional shape Z1 and the distance Y between cases.

  The results of the drop impact test of Example 2 are shown in Table 2.

表２に示すように、断面形状Ｚ１については、□１５ｍｍ、□２０ｍｍのとき、衝突時のＨＧＡケースの加速度が著しく低減されることが確認された。断面形状Ｚ１が□１０ｍｍ以下のとき、ＨＧＡケースの加速度が比較的大きかった理由は、断面形状Ｚ１が小さく、フレーム１０が変形し易すぎて、ＨＧＡケースの速度変化が短時間で起きたことによると推測される。尚、断面形状Ｚ１が大きくなり過ぎると、搬送重量が増加すること、及び、フレーム１０が変形し難くなるため外力の緩衝効果が弱くなることから、断面形状Ｚ１は、□１５ｍｍが好ましい。

As shown in Table 2, regarding the cross-sectional shape Z1, it was confirmed that the acceleration of the HGA case at the time of collision is remarkably reduced when □ 15 mm and □ 20 mm. The reason why the acceleration of the HGA case was relatively large when the cross-sectional shape Z1 was 10 mm or less was that the cross-sectional shape Z1 was small, the frame 10 was too deformed, and the speed change of the HGA case occurred in a short time. It is guessed. Note that if the cross-sectional shape Z1 is too large, the transport weight increases, and the frame 10 is difficult to deform, and the buffering effect of external force becomes weak. Therefore, the cross-sectional shape Z1 is preferably 15 mm.

  Further, as shown in Table 2, when the distance Y between cases was 70 mm, 80 mm, and 90 mm, it was confirmed that the acceleration of the HGA case at the time of collision was significantly reduced. When the inter-case distance Y is 60 mm or less, the acceleration of the HGA case is relatively large because the inter-case distance Y is short and the frame 10 is difficult to deform in a direction different from the direction in which the external force is applied. Is presumed to be weakened. When the distance Y between adjacent cases increases, the hollow space increases, and the transport efficiency during transport decreases. Therefore, the distance Y between cases is preferably 70 mm. Note that the cross-sectional shape Z1 and the inter-case distance Y are preferably optimized in accordance with transport conditions such as the weight of the transported object.

  Next, optimization of the arm length X1 will be described. A drop impact test was performed in the same manner as in Example 1 except that the arm length X1 was 60 mm, 70 mm, 80 mm, 90 mm, and 100 mm, respectively, and the drop posture was the left side. The outer dimensions of the cardboard box corresponded to the arm length X1.

  The results of the drop impact test of Example 3 are shown in Table 3.

表３に示すように、アーム長さＸ１については、８０ｍｍ以上のとき、衝突時のＨＧＡケースの加速度が著しく低減されることが確認された。アーム長さＸ１が７０ｍｍ以下のとき、ＨＧＡケースの加速度が比較的大きかった理由は、アーム長さＸ１が短く、第１の外力緩衝アーム２０及び第２の外力緩衝アーム３０が外力の印可方向とは異なる方向へ変形し難くなり、外力の緩衝効果が弱くなったことによると推測される。アーム長さＸ１が長くなると、中空のスペースが増加し、搬送時の運搬効率が低下することから、アーム長さＸ１は、８０ｍｍが好ましい。尚、アーム長さＸ１は、被搬送物の重量等の搬送条件に応じて、最適化されることが好ましい。

As shown in Table 3, when the arm length X1 was 80 mm or more, it was confirmed that the acceleration of the HGA case at the time of collision was significantly reduced. The reason why the acceleration of the HGA case was relatively large when the arm length X1 was 70 mm or less is that the arm length X1 is short and the first external force buffer arm 20 and the second external force buffer arm 30 are in the direction in which the external force is applied. Is difficult to deform in different directions, and it is presumed that the buffering effect of external force is weakened. When the arm length X1 is increased, the hollow space is increased and the transport efficiency during transport is lowered. Therefore, the arm length X1 is preferably 80 mm. The arm length X1 is preferably optimized in accordance with transport conditions such as the weight of the transported object.

  Next, a cross-sectional shape Z2 of the first external force absorbing arm 20 extending in the vertical direction, a cross-sectional shape Z3 of the first external force absorbing arm 20 extending in the front-rear direction, and a cross-sectional shape Z4 of the second external force absorbing arm extending in the left-right direction. The optimization will be described. A drop impact test was performed in the same manner as in Example 1 except that the cross-sectional shape Z2, the cross-sectional shape Z3, and the cross-sectional shape Z4 were set as shown in Table 4 and the drop posture was the left side.

  The results of the drop impact test of Example 4 are shown in Table 4.

表４に示すように、断面形状Ｚ２、Ｚ３、Ｚ４については、いずれも□１９ｍｍ〜□２１ｍｍの範囲のとき、ＨＧＡケースの加速度が著しく低減されることが確認された。断面形状Ｚ２、Ｚ３、Ｚ４が□１８ｍｍ以下のとき、ＨＧＡケースの加速度が比較的大きかった理由は、第１の外力緩衝アーム２０、第２の外力緩衝アーム３０が変形し易すぎて、ＨＧＡケースの速度変化が短時間で起こったためと推測される。尚、断面形状Ｚ２、Ｚ３、Ｚ４が大きくなり過ぎると、搬送重量が増加すること、及び、第１の外力緩衝アーム２０、第２の外力緩衝アーム３０が変形し難くなるため外力の緩衝効果が弱くなることから、断面形状Ｚ２、Ｚ３、Ｚ４は、□１９ｍｍが好ましい。尚、断面形状Ｚ２、Ｚ３、Ｚ４は、第１の外力緩衝アーム２０の本数、第２の外力緩衝アーム３０の本数等の搬送条件に応じて、最適化されることが好ましい。

As shown in Table 4, with respect to the cross-sectional shapes Z2, Z3, and Z4, it was confirmed that the acceleration of the HGA case was significantly reduced when all were in the range of □ 19 mm to □ 21 mm. The reason why the acceleration of the HGA case was relatively large when the cross-sectional shapes Z2, Z3, and Z4 were 18 mm or less was that the first external force buffer arm 20 and the second external force buffer arm 30 were easily deformed, and the HGA case It is estimated that this speed change occurred in a short time. If the cross-sectional shapes Z2, Z3, and Z4 are too large, the transport weight increases, and the first external force buffer arm 20 and the second external force buffer arm 30 are difficult to deform. Since it becomes weak, □ 19 mm is preferable for the cross-sectional shapes Z2, Z3, and Z4. The cross-sectional shapes Z2, Z3, and Z4 are preferably optimized in accordance with transport conditions such as the number of first external force buffer arms 20 and the number of second external force buffer arms 30.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, the structure 13 for holding the corner portion of the HGA case of the present embodiment is configured so as to sandwich the corner portion of the HGA case having a substantially L-shaped outer shape, that is, two outer surfaces forming the corner portion of the HGA case. Is realized by arranging two rod-like bodies 10a having a substantially square cross section so that the corners of the HGA case can be held. It may be realized by disposing a rod-shaped body 10a having a substantially L-shaped cross section so as to face a corner portion of an HGA case having an approximately L-shaped outer shape.

  Further, the rod-shaped body 10a of the present embodiment has a substantially square cross section, but as long as the frame 10 can be thinned, the cross section is not limited. For example, the cross section may be an ellipse. , L may be used. Moreover, as long as the rod-shaped body 10a is extended linearly, there is no restriction | limiting in the shape, For example, there may be a level | step difference substantially orthogonal to a longitudinal direction in the middle.

It is the figure which showed one Example of the structure of the buffer member 1 for packing. In FIG. 1 (A), it is the figure which showed an example of the deformation | transformation state of the 1st external force buffer arm 20 and the 2nd external force buffer arm 30 when external force is applied via a conveyance container. It is the figure which showed an example of the state which packed the HGA case which is a to-be-conveyed object with the buffer member 1 for packing. It is the figure which showed the state which packed the HGA case which is a to-be-conveyed object with the buffer member 4 for packing of the conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame 11 Room for HGA case 12 Hollow room 20 1st external force buffer arm 20a Tapered surface 30 2nd external force buffer arm 30a, 30b Link part 30c Connection part

Claims (8)

In the cushioning member for packing for packing the object to be transported in the transport container,
A frame for holding the conveyed object;
A first external force buffer arm that protrudes outward from the frame and elastically supports the object to be transported in the transport container via the frame;
The first external force buffer arm is a packing buffer member having a structure that deforms in a direction different from the direction in which the external force is applied when an external force is applied through the transfer container.   The packing cushioning member according to claim 1, wherein the first external force buffering arm has a tapered surface on one side surface.   The packing cushioning member according to claim 1 or 2, wherein the frame has a structure for holding a corner portion of the conveyed object.   The frame is a structure in which rod-like bodies are framed in a lattice shape along six directions orthogonal to each other, and among the plurality of rooms partitioned by the rod-like bodies, adjacent rooms are hollow. The cushioning member for packing as described in any one of Claims 1-3 which has a structure for hold | maintaining the said to-be-conveyed object. A link portion projecting outward from the frame and a connecting portion connecting the adjacent link portions, and for elastically supporting the object to be conveyed in the transfer container via the frame. Further comprising two external force buffer arms,
5. The second external force buffer arm has a structure that deforms in a direction different from a direction in which the external force is applied when an external force is applied through the transfer container. The cushioning member for packing as described.   The packing link member according to claim 5, wherein the adjacent link portions connected by the connection portion are disposed such that the longitudinal direction thereof is inclined relatively.   The packing shock-absorbing member according to claim 1, wherein the first external force shock-absorbing arm protrudes from the frame in six directions orthogonal to each other.   The cushioning member for packing as described in any one of Claims 1-7 currently shape | molded with the foamed polyethylene.

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