JP2011121632A - Packaging unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect a packaged object from a shock caused by a collision or a drop of a packaging unit and simultaneously to avoide the plastic deformation of a cushioning member. <P>SOLUTION: The packaging unit 100 includes: a packaging box 110 having flat wall surfaces 112; cushioning members 120 which are stored in the packaging box 110, one side of each of which abuts on one portion of each of the wall surfaces 112 of the packaging box 110, and the other side of each of which abuts on the side 104 of the packaged object 102; and an internally embedded member 130 which slidably holds the cushioning members 120 in abutting directions (directions shown by a white arrow). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a packing unit including a packing box and a buffer member for packing an object to be packed.

  In order to protect precision equipment from vibrations that may be applied to precision equipment when storing and transporting electrical equipment, and from impact caused by collision or dropping, precision equipment is usually housed in a packaging box such as cardboard. It is supported by the buffer member inside the box.

  As a cushioning member, a foam material such as a polystyrene foam that has been relatively easy to absorb impact and has excellent durability against impact has been used, but in recent years, its use is becoming difficult due to environmental considerations. . Therefore, a cushioning member is generated by superimposing a plurality of cardboards punched out corresponding to the outer shape of the packaged object such as precision equipment, and the packaged material is accommodated in the cushioning member. Techniques for protecting the package are known.

  However, the corrugated board itself has relatively high rigidity, and since the deformation width does not become so large when the cardboard is superimposed, the pressure due to the impact cannot be sufficiently absorbed when the impact is applied. In order to remedy such problems, a technique has been disclosed in which cardboard is formed in a cylindrical shape to increase the elasticity of the buffer member itself and absorb the impact caused by collision or dropping (for example, Patent Document 1).

JP 2009-102047 A

  In the buffer member of Patent Document 1 described above, even when an impact is applied to the packaging box, the object to be packed can be protected by absorbing the pressure due to the impact while deforming itself. However, depending on the weight of the object to be packed, the buffer member may be plastically deformed or damaged, and may not return to its original shape, and the buffer member may not be reused.

  In view of such a problem, an object of the present invention is to provide a packing unit that can protect an object to be packed from an impact based on a collision or a drop while avoiding plastic deformation of a buffer member.

  In order to solve the above problems, a packing unit of the present invention is accommodated in a packing box having a flat wall surface and a packing box, one on a part of the wall surface of the packing box and the other on a side part of the packaged object. It is characterized by comprising a shock-absorbing member that abuts and an inner member that is slidably held in the direction in which the shock-absorbing member abuts.

  The buffer member may be configured such that sliding in the contact direction is limited to a predetermined range by the inner member.

  A protrusion formed integrally with the buffer member, and a slit that allows the protrusion to be fitted into the inner packaging member. The slit has a space of a predetermined length in a direction in which the buffer member abuts against the wall surface of the packaging box. May be.

  An air gap may be provided around the inner side of the wall surface end of the packaging box.

  A plurality of buffer members may be provided corresponding to the wall surfaces in the packaging box.

  As described above, according to the present invention, it is possible to protect an object to be packed from an impact based on a collision or a drop while avoiding plastic deformation of the buffer member. Therefore, it is possible to repeatedly use the buffer member while suppressing the deterioration of the buffer function.

It is the perspective view which showed the schematic structure of the packing unit. It is explanatory drawing for demonstrating the assembly process of a buffer member. It is a cross-sectional view of the packaging unit for demonstrating the structure which absorbs an impact. It is a cross-sectional view of the packaging unit for demonstrating the structure which absorbs an impact. It is the perspective view which showed the fitting state of the buffer member in FIG. 1, and the inclusion member. It is a longitudinal cross-sectional view of the packaging unit for demonstrating the structure which absorbs an impact. It is explanatory drawing which showed the other fitting state of the buffer member and the inclusion member. It is explanatory drawing which showed the other fitting state of the buffer member and the inclusion member.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Packing unit 100)
FIG. 1 is a perspective view showing a schematic configuration of the packaging unit 100. As shown in FIG. 1, the packaging unit 100 includes a packaging box 110, a buffer member 120, and an inclusion member 130. The cushioning member 120 and the inclusion member 130 surround a packaged object 102 such as a precision instrument. Thus, the object to be packed 102 is fixed and supported at a predetermined position, and the object to be packed 102 is protected from vibrations that can be applied to the object to be packed 102 and impacts caused by collision or dropping.

  The packing box 110 is formed in a predetermined shape capable of packing (accommodating) the object to be packed 102, for example, a box shape (square column shape) larger than the object to be packed 102 in which six wall surfaces 112 are orthogonal to each other. Further, in the present embodiment, at least one wall surface 112 with which the buffer member 120 abuts is formed to be substantially flat, and the substantially flat wall surface 112 is formed so as to be distorted in a direction perpendicular to the wall surface 112 over the entire surface. The Therefore, the packaging box 110 is preferably formed by combining flat plates having a predetermined bending rigidity, such as paper cardboard and plastic cardboard.

  In this way, by using paper cardboard or plastic cardboard, the packaging box 110 can be cut out and formed into a predetermined shape from one flat plate, so that the manufacturing cost can be reduced. In addition, since a single flat plate can be bent and formed into a box shape without using an adhesive such as glue or adhesive, it is possible to maintain a high bonding strength between the wall surfaces.

  The buffer member 120 is formed in, for example, a box shape in which six planes are orthogonal to each other, one surface of the outer peripheral portion of the buffer member 120 is in contact with a part of the inner surface of the wall surface 112 of the packing box 110, and It is accommodated in the packaging box 110 in a state where the other surface of the outer peripheral portion is in contact with the portion 104. Here, the wall surface 112 with which the buffer member 120 abuts includes not only the side surface of the packaging box 110 but also the top surface and the bottom surface. However, in this embodiment, the buffer member 120 is not arranged on the top surface side so that the packaged object 102 can be easily taken out when unpacking.

  Further, the buffer member 120 is formed separately from the inner packaging member 130, and is indicated by a white arrow in FIG. 1 independently of the inner packaging member 130 together with the packaged object 102 in a state before being accommodated in the packaging box 110. The packing boxes 110 to be accommodated are formed so as to be slidable in the direction of the wall surface 112 (hereinafter, simply referred to as a contact direction) with which they contact each other. Therefore, even after being accommodated in the packing box 110, if the wall surface 112 of the packing box 110 is bent, the buffer member 120 can slide in the contact direction of the packing box 110.

  FIG. 2 is an explanatory diagram for explaining an assembly process of the buffer member 120. The buffer member 120 is formed, for example, by cutting a single flat plate such as a paper cardboard or a plastic cardboard into a predetermined shape, as shown in the development view at the top of FIG. As described above, the environmental load can be reduced by the configuration in which the foam member such as the polystyrene foam is not used as the buffer member 120.

  In addition, two rectangular tubes 140 are formed on the buffer member 120. The two rectangular tubes 140 are formed by folding two opposing belt portions 142 in a flat plate into a cylindrical shape. Further, each of the square tubes 140 is inserted into a hole 148 provided in the middle of the belt portion 142 with a tip end portion 146 extending from the beam portion 144 and maintained in its shape. The two rectangular tubes 140 are fitted by a fitting portion 150 cut and raised from one band 142 and a notch 152 formed in the other band 142. Finally, the buffer member 120 is completed by folding the flap 154 so as to close the through hole of the square tube 140. A protrusion 156, which will be described later, is also integrally formed with the flap 154.

  In this way, the configuration in which the box-shaped cushioning member 120 is formed only by folding and fitting the flat corrugated cardboard eliminates the need to use an adhesive such as glue or adhesive, thereby significantly reducing material costs and manufacturing costs. can do. Moreover, since the said buffer member 120 can be stored in the state of a flat plate, the occupation volume of the buffer member 120 at the time of transportation can be kept to the minimum, and it becomes possible to reduce transportation cost. Further, the configuration in which the two rectangular tubes 140 are fitted to form a box shape can secure a predetermined rigidity for fixing the package object 102 while suppressing the material area and weight of the cardboard.

  The included member 130 is a member other than the buffer member 120 described above among the members included in the packing box 110. In FIG. 1, the included member 130 is positioned above and below the package 102 as a top plate and a bottom plate. . The inner packaging member 130 can also be made of paper corrugated cardboard or plastic corrugated cardboard. Therefore, the inner member 130 can absorb vertical vibrations and shocks. However, the inner member 130 is not limited to a case where a plurality of flat plates are folded back and overlapped, and can be configured in various shapes such as a box shape in which a material is folded like the buffer member 120 as long as the thickness can be secured. Similarly, the buffer member 120 described above is not limited to a box shape, and can be configured in various shapes such as a structure in which a plurality of flat plates are folded back and overlapped.

  Moreover, when the buffer member 120 and the inclusion member 130 are provided with two or more like FIG. 1, each is formed in the symmetrical and common shape. With this configuration, it is possible to reduce manufacturing costs and storage costs.

(Impact absorption)
In the packaging unit 100 described above, a small impact such as vibration on the packaging unit 100 is absorbed by the buffer member 120 to suppress the influence on the packaged object 102. However, when a large impact such as a collision or a drop occurs, the shock absorbing member 120 having a small deformation width cannot sufficiently absorb the impact. Therefore, in this embodiment, the impact is absorbed using the elasticity of the wall surface of the packaging box 110. Hereinafter, the structure which absorbs the impact in this embodiment is demonstrated.

  FIG. 3 is a cross-sectional view of the packaging unit 100 for explaining a structure for absorbing an impact. Here, in order to facilitate understanding, a change in structure when the load of the article to be packed 102 is applied in the direction of the arrow due to an impact is shown.

  When a load is applied in the direction of the black arrow in FIG. 3A, the wall surface 112 of the packaging box 110 is distorted by its expandability as shown in FIG. The pressure that is supposed to be applied to the buffer member 120a and the article to be packed 102 is significantly reduced.

  Here, the article to be packed 102 is pushed out of the wall surface 112 through the buffer member 120a due to the inertial force, and the object to be packed 102 and the buffer member 120a are indicated by black arrows in FIG. Displace in the direction. As described above, since the buffer member 120b is configured to be slidable in the contact direction with the packing box 110, the wall surface 112 can absorb most of the applied impact.

  At this time, since the impact applied to the packing unit 100 is absorbed over the entire wall surface 112 of the packing box 110, the wall surface 112 is not partially plastically deformed or damaged. Although it bends toward the outside of the packaging box 110, it immediately returns to its original position and shape due to the elastic function in the direction indicated by the white arrow in FIG. With such a configuration, it is possible to secure the shape of the packaging box 110 with a certain degree of rigidity and to protect the object to be packed 102 from an impact caused by a collision or a drop.

  In addition, when the bending rigidity of the wall surface 112 of the packing box 110 is compared with the rigidity of the buffer member 120, the bending rigidity of the wall surface 112 is lower, so that plastic deformation and breakage of the buffer member 120 due to impact can be avoided, and the buffer member The deterioration of the buffer function of 120 can be suppressed, and the buffer member 120 can be used repeatedly. Therefore, the repeated durability of impacts caused by collision or dropping is also high.

  Here, one surface of the buffer member 120 abuts on a position corresponding to the center of gravity of the object to be packed 102 on the side portion 104 of the object to be packed 102, and the other surface is inside the wall surface 112 of the packing box 110. It is in contact with the approximate center.

  By bringing one surface of the cushioning member 120 into contact with the position corresponding to the center of gravity of the article to be packed 102, all of the inertial force of the article to be packed 102 can be received by the cushioning member 120 without being biased. Therefore, even when an impact is applied to either the ridge or the corner of the packing unit 100, the weighted load of the article to be packed 102 can be evenly distributed to each of the one or more buffer members 120.

  Here, the contact with the position corresponding to the center of gravity of the article to be packed 102 is not limited to the case where the single buffer member 120 contacts with a position including the position corresponding to the center of gravity. Includes a case where the center position of the portion where the plurality of buffer members 120 are in contact corresponds to the position corresponding to the center of gravity of the article to be packed 102.

  Moreover, since the other surface of the buffer member 120 is brought into contact with the approximate center inside the wall surface 112 of the packaging box 110, the deflection of the wall surface 112 of the packaging box 110, that is, the displacement in the contact direction can be further increased. The allowable pressure that can be absorbed is increased based on the distortion, and the influence on the object to be packed 102 with respect to the impact can be further suppressed.

  Furthermore, by reducing the contact area of the buffer member 120 with the wall surface 112 of the packing box 110, the displacement in the contact direction can be increased, and the influence of the impact on the packed object 102 can be further suppressed. It becomes possible.

  Further, as shown in FIG. 3, a gap 162 is provided around the inside of the end of the wall surface 112 in the packing box 110. By providing the gap 162 around the buffer member 120 in this way, not only the wall surface 112 corresponding to the buffer member 120 in the packing box 110 but also a part of the wall surface 112 orthogonal to the wall surface 112 is shown in FIG. Tilt to the inside of the packing box 110. In this way, the deflection of the wall surface 112 of the packaging box 110 can be further increased, and the influence of the impact on the article 102 to be packed can be minimized.

  In the above-described example, the change in the structure of the packaging box 110 when an impact is applied in a direction perpendicular to the wall surface 112 of the packaging box 110 has been described for ease of understanding. However, the packaging box 110 is inclined from the vertical axis. In some cases, the edge of the packing box 110 may collide with the ground or the like.

  FIG. 4 is a cross-sectional view of the packaging unit 100 for explaining a configuration for absorbing an impact. Here, a change in the structure of the article to be packed 102 when an impact is applied to the ridge of the packing unit 100 obliquely from 45 ° due to dropping or the like is shown.

  When an impact is applied to the packaging unit 100 in the direction of the black arrow in FIG. 4A due to dropping or the like, the packaging unit 100 receives the impact, and the packaging box 110 and the buffer member 120 (120a, 120b, 120c). 120d) tries to stop as shown in FIG. Therefore, a pressure corresponding to an impact should be applied to the article to be packed 102 that intends to continue dropping due to inertial force through the buffer member 120a. However, in the present embodiment, the wall surface 112 of the packaging box 110 is distorted due to its expandability, and thus has an elastic function, and the pressure that should originally be applied to the buffer members 120a and 120b and the packaged object 102 is significantly reduced.

  Here, the object to be packed 102 that continues to drop due to inertial force pushes the wall surface 112 through the buffer members 120a and 120b, and the object to be packed 102 is painted black in FIG. Displaces in the direction indicated by the arrow. Accordingly, the buffer members 120a and 120b are relatively displaced in the abutting direction as indicated by the cross-hatched arrows in FIG. In other words, the elastic function works in two orthogonal directions, and the load can be distributed and the impact can be absorbed by the respective wall surfaces 112.

  At this time, as described with reference to FIG. 3, the impact applied to the packing unit 100 is absorbed over the entire wall surface 112 of the packing box 110, so that the wall surface 112 is partially plastically deformed, Although it is bent toward the outside of the packaging box 110 without being damaged, it immediately returns to its original position and shape by its elastic function. With such a configuration, it is possible to secure the shape of the packaging box 110 with a certain degree of rigidity and to protect the object to be packed 102 from an impact caused by a collision or a drop.

  In the present embodiment, if the two or three wall surfaces 112 including the ridges and corners of the packing unit 100 in the plane have a buffer structure, the packaged object 102 can be suitably protected. On the other hand, since the buffer structure of the buffer member 120 and the wall surface 112 is independent of each other, the required number of the wall surfaces 112 can be individually set. That is, if one wall surface 112 that requires a buffer structure, such as a ridge or corner that is vulnerable to falling, is provided, one buffer structure may be prepared correspondingly, and if all six surfaces are required, , 6 should be prepared.

  Further, as described above, the gap 162 is formed around the inner periphery of the end portion of the wall surface 112 of the packing box 110 of the buffer member 120 of the present embodiment. Therefore, if the buffer member 120 is simply sandwiched between the wall surface 112 and the packaged object 102, the buffer member 120 moves in a plane direction perpendicular to the contact direction, and the center position of the wall surface 112 and the packaged object There is a risk of disengagement from the center of gravity position of 102. Furthermore, if the buffer member 120 moves and separates from the side portion 104 of the object to be packed 102, even the fixed object 102 cannot be fixedly supported. Therefore, in the present embodiment, the buffer member 120 is restricted from moving in the surface direction perpendicular to the contact direction.

  FIG. 5 is a perspective view showing a fitting state between the buffer member 120 and the inner member 130 in FIG. 1. Here, among the inclusion members 130 in FIG. 1, the inclusion member 130 that supports the article to be packed 102 from the vertically downward direction functions as the slit member 170 shown in FIG.

  A slit on the surface of the slit member 170 where the buffer member 120 is disposed has a depth corresponding to the height of the protruding portion 156 of the buffer member 120 described above, and the slit specifies the position of the buffer member 120 on the slit member 170. 172 and slits 174 are formed. The slit 172 on the wall surface 112 side is formed so that the side surface of the slit member 170 is flush with the one protruding portion 156 of the buffer member 120. A space having a predetermined length in the contact direction is formed in the slit 174 into which the other protrusion 156 of the buffer member 120 is inserted. Here, as shown in FIG. 5B, the protruding portion 156 is fitted into the slit 172 and the slit 174, thereby holding the buffer member 120 and specifying the position of the buffer member 120 on the slit member 170. Since the slit 174 has a predetermined length in the direction of the wall surface 112, the slit 174 is slidable in the direction of the wall surface 112 in contact with the buffer member 120, as indicated by a black arrow in FIG. With this configuration, the load on the article to be packed 102 can be concentrated at substantially the center of the wall surface 112 that abuts, so that the elasticity of the wall surface 112 can be used effectively, and the plastic deformation of the buffer member 120 due to impact can be achieved. And avoid damage.

  Further, in the slit member 170, the slit 174 has a predetermined length, so that the sliding in the contact direction of the buffer member 120 is also limited to a predetermined range. In this way, even when an excessively heavy load is applied due to an impact greater than expected, a part of the heavy load can be received at the end of the slit 174, so that the plastic deformation of the wall surface 112 due to the excessive load is performed. Or damage can be avoided.

  Further, the buffer member 120 is also restricted from moving in the direction of the packed object 102 indicated by the hatched arrows in FIG. Can be avoided. Further, as shown in FIGS. 3 and 4, even when an impact is applied to the packing unit 100, the load of the buffer member 120 (120 c in FIG. 3 and 120 c and 120 d in FIG. 4) itself is the end of the slit 174. Therefore, the wall surface 102 only needs to absorb the load load of the object to be packed 102 and the buffer member 120 in contact with it, and the elasticity of the wall surface 112 can be used effectively.

  FIG. 6 is a vertical cross-sectional view of the packaging unit 100 for explaining a configuration for absorbing an impact. Here, when the packing unit 100 collides with the ground, the buffer member 120a and the article to be packed 102 slide once in the direction of the black arrow in FIG. 6, and then return to the original position. At this time, it can be understood that the protruding portion 156 of the buffer member 120 slides in the slit 174 in the direction of the black arrow.

  The slit 174 slides the buffer member 120 in the contact direction and restricts movement in a plane direction perpendicular to the contact direction. Therefore, the buffer member 120 does not move in the direction indicated by the hatched arrow in FIG. With this configuration, it is possible to avoid an event in which the buffer member 120 moves in a plane direction perpendicular to the contact direction and departs from the center of the wall surface 112 or the center of gravity of the article to be packed 102, and stably protects the object to be packed 102. It becomes possible.

(Other examples)
FIG. 7 is an explanatory view showing another fitting state between the buffer member 120 and the inner member 130. Here, the inclusion member 130 functions as the guide member 180. The guide member 180 is accommodated in the packaging box 110 and contacts side surfaces of the buffer member 120 other than the contact direction. For example, as shown in FIG. 7A, the guide member 180 is disposed inside the wall surface 112 of the packing box 110 so as to be parallel to the wall surface 112, and the center thereof is matched with the body shape of the buffer member 120. A guide hole (through hole) 182 is provided so that the buffer member 120 can be inserted. The cushioning material 120 is provided with a latching plate 184 on the surface in contact with the packing box 110, and a latching key 186 that is cut and raised after being inserted into the guide hole 182 on the other surface. Further, when such a buffer structure is disposed on each of the four wall surfaces 112, the result is as shown in FIG. Here, in order to provide the gap 162 around the inner side of the end portion of the wall surface 112, the guide member 180 is arranged in a well shape.

  The buffer member 120 is sandwiched between the wall surface 112 of the packing box 110 and the side portion 104 of the article to be packed 102, and the movement in the surface direction perpendicular to the contact direction is restricted by the guide hole 182 of the guide member 180, Positioning in the packing unit 100 is performed. When the packing unit 100 receives an impact, as shown by a double arrow in FIG. 7A, the packing unit 100 slides inside the guide hole 182 of the guide member 180 and presses the wall surface 112. In this way, it is possible to avoid the event that the buffer member 120 moves in the plane direction perpendicular to the contact direction and leaves the center of the wall surface 112 or the center of gravity of the article to be packed 102, and stably protects the object to be packed 102. Is possible.

  In addition, the movement of the packing material 102 in the direction of the packing object 102 is restricted by the retaining plate 184 of the cushioning material 120, and the packing object 102 can be protected from a load. Further, by limiting the sliding range of the buffer material 120 in the abutting direction between the latch plate 184 and the latch key 186, the plastic deformation of the wall surface 112 can be performed without applying an excessive load only to the wall surface 112. Or damage can be avoided.

  FIG. 8 is an explanatory view showing still another fitting state between the buffer member 120 and the inner member 130. Also here, the inner member 130 functions as the guide member 190. In the case of FIG. 8, the guide member 190 is disposed as a bottom plate of the packing box 110, like the internal member 130 of FIG. 1. For example, in FIG. 8A, the guide member 180 supports the article to be packed 102 and the buffer member 120 from the vertically downward direction, and has a guide key 192 at the wall surface side end of the packing box 110 among the side surfaces of the buffer member 120. is doing. The cushioning material 120 is provided with a latching plate 194 on the surface in contact with the packing box 110, and a latching key 196 is provided on the other surface. Moreover, when such a buffer structure is accommodated in the packing box 110, it will become like FIG.8 (b).

  The buffer member 120 is sandwiched between the wall surface 112 of the packing box 110 and the side portion 104 of the article to be packed 102, and the movement in the surface direction perpendicular to the contact direction is restricted by the guide key 192 of the guide member 180, Positioning in the packing unit 100 is performed. When the packing unit 100 receives an impact, it slides between the guide keys 192 of the guide member 180 to press the wall surface 112. In this way, it is possible to avoid the event that the buffer member 120 moves in the plane direction perpendicular to the contact direction and leaves the center of the wall surface 112 or the center of gravity of the article to be packed 102, and stably protects the object to be packed 102. Is possible.

  Further, the sliding in the direction of the object to be packed 102 is restricted by the latch plate 194 and the guide key 192 of the buffer material 120, and the object to be packed 102 can be protected from the load. Furthermore, by limiting the sliding range of the buffer material 120 in the contact direction between the latch plate 194 and the latch key 196, it is possible to avoid plastic deformation and breakage of the wall surface 112 due to an excessive load. It becomes.

  As described above, the packing unit 100 described above can protect the object to be packed from an impact based on a collision or a drop while avoiding plastic deformation of the buffer member. Therefore, it is possible to repeatedly use the buffer member while suppressing the deterioration of the buffer function.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.

  The present invention can be used for a packing unit including a packing box and a buffer member for packing an object to be packed.

DESCRIPTION OF SYMBOLS 100 ... Packing unit 102 ... Packed object 104 ... Side part 110 ... Packing box 112 ... Wall surface 120 ... Buffer member 130 ... Internal member 156 ... Protrusion 162 ... Slit 170 ... Slit member 172 ... Slit 174 ... Slit 180, 190 ... Guide Member 182 ... Guide holes 184 and 194 ... Hatch plates 186 and 196 ... Hook keys 192 ... Guide keys

Claims (5)

A packing box having a flat wall;
A buffer member accommodated in the packaging box, one of which is a part of the wall surface of the packaging box and the other is in contact with a side portion of the packaged item;
An internal member that is slidably held in the direction in which the buffer member abuts;
A packaging unit comprising:   The packing unit according to claim 1, wherein the buffer member is limited in sliding in the contact direction to a predetermined range by the inner member. A protrusion integrally formed with the buffer member;
A slit that allows the protruding portion to be fitted into the inner member,
The packaging unit according to claim 1, wherein the slit has a space having a predetermined length in a direction in which the buffer member abuts against a wall surface of the packaging box.   The packing unit according to any one of claims 1 to 3, wherein a gap is provided around the inner side of the wall surface end of the packing box.   The packing unit according to any one of claims 1 to 4, wherein a plurality of the buffer members are provided corresponding to the wall surface of the packing box.

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