Packing member

Abstract

To hold a cushioning member easily with a base member without lowering the rigidity of the base member.SOLUTION: A packing member comprises a cushioning member and a base member, the base member having a first holding part including: a mount part on which the cushioning member is mounted; a first side part extending upward from an edge of the mount part along a first side face of the cushioning member; a top surface part arranged at a position vertically facing the mount part across the cushioning member; and a second side part extending downward along a second side face of the cushioning member, the second side part having an engagement hole. The base member further has a second holding part protruding upward from an edge of the mount part on a side opposite to a connection side for the first side part, the second holding part being arranged between the cushioning member and the second side part, and the second holding part having a root part and an anchor part. The anchor part is folded at a boundary with the root part to protrude outward through the engagement hole and engage with an edge of the engagement hole.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a packaging member.

Background Art

[0002] Conventional packaging members include a cushioning member (cushioning material) and a base member (fixed plate). The cushioning member is adhered to the base member (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, a part of the base member inside the outer edge is raised, and the cushioning member is adhered to the raised part, whereby the cushioning member is held. In this configuration, a step of adhering the cushioning member to the base member is required, and the number of steps increases in the formation of the cushioning member.

[0005] Also, in a configuration where a part of the base member inside the outer edge is raised, if the size of the raised part becomes large, the rigidity of the base member decreases.

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a packaging member that can easily hold a cushioning member with a base member without reducing the rigidity of the base member.

Means for Solving the Problems

[0007] To achieve the above object, a packaging member according to an aspect of the present invention includes a buffer member and a base member that holds the buffer member. The base member is made of a single sheet material. The base member includes a placement portion on which the buffer member is placed, a first side portion that is formed by raising a part of the base member and extends upward along the first side surface of the buffer member from the edge of the placement portion to cover the first side surface, and a part that extends from an edge of the first side portion opposite to the connection side with the placement portion, and is bent at the boundary with the first side portion to be disposed at a position facing the placement portion in the vertical direction with the buffer member sandwiched therebetween, and a top surface portion that covers the buffer member from above, and a part that extends from an edge of the top surface portion opposite to the connection side with the first side portion, and is bent at the boundary with the top surface portion to extend downward along the second side surface opposite to the first side surface of the buffer member to cover the second side surface, and has a first holding portion having a second side portion. The second side portion has an engagement hole that penetrates in a first direction in which the first side portion and the second side portion face each other with the buffer member sandwiched therebetween. The base member further has a second holding portion that projects upward from an edge of the placement portion opposite to the connection side with the first side portion by raising a part of the base member. The second holding portion is disposed between the buffer member and the second side portion in the first direction. The second holding portion has a root portion that is a portion on the connection side with the placement portion, and a fastening portion that extends upward from the root portion. The fastening portion is bent at the boundary with the root portion to project outward through the engagement hole from between the buffer member and the second side portion in the first direction and engage with the edge of the engagement hole.

Advantages of the Invention

[0008] In the configuration of the present invention, the buffer member can be easily held by the base member without reducing the rigidity of the base member.

Brief Description of the Drawings

[0009]

Figure 1

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Figure 10

DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, with reference to FIGS. 1 to 10, a packaging member 100 according to an embodiment of the present invention will be described.

[0011] <Packaging member> As shown in FIG. 1, the packaging member 100 of the present embodiment includes a buffer member 1 and a base member 2. The packaging member 100 is formed by combining the buffer member 1 and the base member 2. For example, the packaging member 100 is disposed along the inner surface of a packaging case (not shown). The packaging member 100 may be disposed on the bottom surface or the side surface of the inner surface of the packaging case. Further, the packaging member 100 may be disposed so as to cover an object to be packaged (not shown) accommodated in the packaging case from above.

[0012] <Buffer member> As shown in FIG. 2, the buffer member 1 is a laminate in which a plurality of buffer sheet materials 10 are laminated. The plurality of buffer sheet materials 10 are, for example, cardboard sheets, and are formed in a substantially rectangular shape when viewed from the thickness direction of the buffer sheet material 10. The plurality of buffer sheet materials 10 are laminated in the thickness direction of the buffer sheet material 10. The buffer member 1 buffers an impact applied in the stacking direction of the plurality of buffer sheet materials 10 (that is, the thickness direction of the buffer sheet material 10). Therefore, although not shown, the object to be packaged is arranged to face the laminate of the plurality of buffer sheet materials 10 as the buffer member 1 in the stacking direction. Note that the buffer member 1 may be formed by folding a single sheet material.

[0013] <Base member> The base member 2 is formed by cutting up and folding a part of a single sheet material as shown in FIG. 3. FIG. 3 is a development view of the base member 2. In FIG. 3, the cutting line is shown as a thick solid line.

[0014] Note that the base member 2 is not a combination of a plurality of different members. Therefore, when forming the base member 2, an adhesive or the like for fastening different members together is not required. The sheet material constituting the base member 2 is, for example, a cardboard sheet.

[0015] The base member 2 has a first holding portion 20 (see FIG. 4) for holding the buffer member 1. Specifically, the base member 2 has a placement portion 201 on which the buffer member 1 is placed. The placement portion 201 has a part of the surface of the sheet material constituting the base member 2 as a placement surface. In FIG. 3, the region that becomes the placement portion 201 is shown by a thin broken line.

[0016] In the following description, for convenience, the direction perpendicular to the placement surface of the placement portion 201 is defined as the vertical direction, and the side on which the buffer member 1 is placed with respect to the placement portion 201 is defined as the upper side. However, this definition of the vertical direction does not limit the actual orientation and positional relationship of each component of the packaging member 100.

[0017] Also, in the following description, a direction orthogonal to the vertical direction is denoted by the symbol D1 and is referred to as the first direction D1. A direction orthogonal to the vertical direction and orthogonal to the first direction D1 is denoted by the symbol D2 and is referred to as the second direction D2. The first direction D1 and the second direction D2 are directions parallel to the mounting surface of the mounting portion 201.

[0018] When viewed from the vertical direction, the base member 2 has a substantially rectangular outer shape. Of the four sides of the base member 2, one pair of opposite sides extend along the first direction D1, and the other pair of opposite sides extend along the second direction D2.

[0019] In a state where the buffer member 1 is mounted on the mounting portion 201, the stacking direction of the plurality of buffer sheet materials 10 constituting the buffer member 1 coincides with the first direction D1, and the longitudinal direction of the buffer member 1 coincides with the second direction D2. In the following description, of the buffer member 1, the side surface facing one side of the first direction D1 is referred to as the first side surface 11, and the side surface facing the other side of the first direction D1 (that is, the side surface opposite to the first side surface 11) is referred to as the second side surface 12.

[0020] The mounting portion 201 is a part inside the outer edge portion of the base member 2 when viewed from the vertical direction. Note that the buffer member 1 has a substantially rectangular shape with the second direction D2 as the longitudinal direction when viewed from the vertical direction. Therefore, the mounting portion 201 has a substantially rectangular shape with the second direction D2 as the longitudinal direction when viewed from the vertical direction.

[0021] The base member 2 has a first side portion 21, a top surface portion 202, and a second side portion 22. The mounting portion 201, the first side portion 21, the top surface portion 202, and the second side portion 22 constitute the first holding portion 20. That is, the first holding portion 20 has the mounting portion 201, the first side portion 21, the top surface portion 202, and the second side portion 22.

[0022] The first side portion 21, the top surface portion 202, and the second side portion 22 are portions where a part of the base member 2 is cut and raised. By being cut and raised and bent, together with the placement portion 201, they form a square tube. Among the base member 2, the portions that become the first side portion 21, the top surface portion 202, and the second side portion 22 are cut and raised and bent in a state where the buffer member 1 is placed on the placement portion 201 (that is, the state shown in FIG. 6).

[0023] From this, as shown in FIG. 4, the buffer member 1 is disposed inside the square tube formed by the placement portion 201, the first side portion 21, the top surface portion 202, and the second side portion 22. By disposing the buffer member 1 inside the square tube, the buffer member 1 is held by the base member 2.

[0024] The first side portion 21 extends upward along the first side surface 11 of the buffer member 1 from the edge of the placement portion 201 by cutting and raising a part of the base member 2. The first side portion 21 covers the first side surface 11.

[0025] The top surface portion 202 is a portion extending from the edge of the first side portion 21 on the side opposite to the connection side with the placement portion 201. The boundary line (the line extending in the second direction D2) between the first side portion 21 and the top surface portion 202 is a valley fold line. The top surface portion 202 is disposed at a position facing the placement portion 201 in the vertical direction with the buffer member 1 sandwiched therebetween by being bent at the boundary with the first side portion 21. In other words, the top surface portion 202 extends substantially parallel to the placement portion 201 by being bent at the boundary with the first side portion 21. The top surface portion 202 covers the buffer member 1 from above.

[0026] The second side portion 22 is a portion extending from the edge of the top surface portion 202 on the side opposite to the connection side of the first side portion 21. The boundary line (the line extending in the second direction D2) between the top surface portion 202 and the second side portion 22 is a valley fold line. The second side portion 22 extends downward along the second side surface 12 of the buffer member 1 by being bent at the boundary with the top surface portion 202. The second side portion 22 covers the second side surface 12. Note that the first side portion 21 and the second side portion 22 face each other in the first direction D1 with the buffer member 1 sandwiched therebetween.

[0027] <Shape-maintaining structure> If a part of the base member 2 is simply cut up and bent into a square tube shape, the bent part will unfold and the buffer member 1 cannot be held. Therefore, the base member 2 further has a second holding portion 23 in order to maintain the shape of the portion bent into a square tube shape.

[0028] As shown in FIGS. 5 and 6, the second holding portion 23 protrudes upward from the edge of the mounting portion 201 on the side opposite to the connection side with the first side portion 21 when a part of the base member 2 is cut up. For example, the second holding portion 23 is formed by cutting up a part of the mounting portion 201. The second holding portion 23 extends upward along the second side surface 12 of the buffer member 1. The second holding portion 23 is disposed between the buffer member 1 and the first direction D1 of the second side portion 22.

[0029] For example, when forming the packaging member 100, first, the second holding portion 23 is cut up (see FIG. 5). Thereafter, the buffer member 1 is placed on the mounting portion 201 (see FIG. 6). From this state, the portions that will become the first side portion 21, the top surface portion 202, and the second side portion 22 are cut up and bent. Thereby, the second holding portion 23 can be disposed between the buffer member 1 and the first direction D1 of the second side portion 22.

[0030] Further, the second side portion 22 has an engagement hole 220 that penetrates the base member 2 in the thickness direction. In a state where the portions that will become the first side portion 21, the top surface portion 202, and the second side portion 22 are cut up and bent into a square tube shape, the engagement hole 220 is a through hole that penetrates in the first direction D1. The opening shape of the engagement hole 220 is rectangular when viewed from the first direction D1. For example, the engagement hole 220 reaches the top surface portion 202 from the second side portion 22 across the boundary between the second side portion 22 and the top surface portion 202.

[0031] The second holding portion 23 has a base portion 231 and a fastening portion 232. The base portion 231 is the portion on the connection side with the mounting portion 201. The fastening portion 232 extends upward from the base portion 231. In other words, the fastening portion 232 is the portion on the tip side of the second holding portion 23. The fastening portion 232 is bent at the boundary with the base portion 231.

[0032] As a result, as shown in FIG. 7, the fastening portion 232 protrudes outward from between the buffer member 1 and the second side portion 22 in the first direction D1 through the engagement hole 220. Then, the fastening portion 232 engages with a pair of edges of the engagement hole 220 that face each other in the second direction D2. By engaging the fastening portion 232 with the edge of the engagement hole 220, the first holding portion 20 and the second holding portion 23 are connected.

[0033] Here, as shown in FIG. 8, the fastening portion 232 has a trapezoidal shape that widens upward from the base portion 231 side when viewed in the first direction D1. The width W1 of the tip portion of the fastening portion 232 (in other words, the portion where the width in the second direction D2 is the largest) is larger than the opening width W2 of the engagement hole 220 in the second direction D2. That is, the fastening portion 232 has a portion where the width in the second direction D2 is larger than the opening width W2 of the engagement hole 220 in the second direction D2.

[0034] Due to the trapezoidal shape of the fastening portion 232, the widened portion (i.e., the tip portion) of the fastening portion 232 contacts the edge of the engagement hole 220 from the outside in the first direction D1. Since the maximum width W1 of the fastening portion 232 is larger than the opening width W2 of the engagement hole 220, the fastening portion 232 is difficult to return between the buffer member 1 and the second side portion 22 in the first direction D1. That is, the engagement between the engagement hole 220 and the fastening portion 232 is maintained. As a result, it is possible to suppress the expansion of the portion including the first side portion 21, the top surface portion 202, and the second side portion 22 (i.e., the portion bent into a rectangular tube shape).

[0035] Note that the buffer member 1 has the second direction D2 as its longitudinal direction. To cover this buffer member 1, the first side portion 21, the top surface portion 202, and the second side portion 22 also become longer in the second direction D2.

[0036] Therefore, the base member 2 has a plurality of second holding portions 23 that are arranged at intervals in the second direction D2. Each of the plurality of second holding portions 23 has a base portion 231 and a fastening portion 232. And the second side portion 22 has a plurality of engaging holes 220 with which the plurality of fastening portions 232 respectively engage. That is, the second side portion 22 has a plurality of engaging holes 220 that are arranged at intervals in the second direction D2. Thereby, it is possible to further suppress the expansion of the portion including the first side portion 21, the top surface portion 202, and the second side portion 22 (that is, the portion bent into a square tube shape).

[0037] In the present embodiment, as described above, a part of the base member 2 is cut and raised, and the cut and raised portion is bent into a square tube shape so as to enclose the buffer member 1. That is, the buffer member 1 is disposed inside the portion bent into a square tube shape (that is, inside the square tube). And the second holding portion 23 is disposed between the buffer member 1 and the second side portion 22 in the first direction D1. In this case, as shown in FIG. 9, with respect to the second side portion 22, by pulling out the fastening portion 232 from the inner side (In) to the outer side (Out) in the first direction D1, the fastening portion 232 can be engaged with the engaging hole 220.

[0038] For example, as shown in FIG. 10, when the second holding portion 23 is disposed on the side opposite to the side where the buffer member 1 is disposed with respect to the second side portion 22, when trying to engage the fastening portion 232 with the engaging hole 220, it is necessary to push the fastening portion 232 from the outer side (Out) to the inner side (In) in the first direction D1 with respect to the second side portion 22. However, there is the buffer member 1 on the inner side in the first direction D1. Therefore, the fastening portion 232 cannot be pushed in sufficiently. Therefore, the engagement between the engaging hole 220 and the fastening portion 232 becomes insufficient. Or, the fastening portion 232 cannot be engaged with the engaging hole 220.

[0039] For example, in the configuration shown in FIG. 10, it is conceivable to make the first side portion 21, the top surface portion 202, and the second side portion 22 sufficiently long in the second direction D2 with respect to the buffer member 1 and provide an engagement structure at both ends in the second direction D2. However, for this purpose, it is necessary to increase the size of the base member 2 in the second direction D2, and the packaging member 100 will become larger. If the size of the base member 2 in the second direction D2 is not increased, the width in the second direction D2 of the outer edge portion of the base member 2 (width W shown in FIG. 1) will become smaller, and the base member 2 itself will be easily bent.

[0040] Further, when the first side portion 21, the top surface portion 202, and the second side portion 22 are made longer in the second direction D2, the rigidity of the first side portion 21, the top surface portion 202, and the second side portion 22 decreases. In order to increase the rigidity of these portions, measures such as adding a bending shape must be taken, which complicates the structure and leads to an increase in cost.

[0041] On the other hand, in the present embodiment, since it is not necessary to make the first side portion 21, the top surface portion 202, and the second side portion 22 long in the second direction D2, it is not necessary to add measures to increase the rigidity of these portions. Also, the rigidity of the base member 2 itself does not decrease. That is, in the present embodiment, the buffer member 1 can be easily held by the base member 2 without reducing the rigidity of the base member 2.

[0042] The embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above embodiments, and further includes all modifications within the meaning and scope equivalent to the scope of claims.

Explanation of Reference Numerals

[0043] 1 Buffer member 2 Base member 10 Buffer sheet material 11 First side 12 Second side 20 First holding portion 21 First side portion 22 Second side portion 23 Second holding part 100 Packaging material 201 Placing part 202 Top surface part 220 Engagement hole 231 Root part 232 Fastening part D1 First direction D2 Second direction W1 Width W2 Opening width

Claims

1. A buffer member, a base member for holding the buffer member, and the base member is made of a single sheet material, the base member includes a placement portion on which the buffer member is placed, a first side portion that is formed by raising a part of the base member and extends upward along the first side surface of the buffer member from the edge of the placement portion to cover the first side surface, a top surface portion that is a portion extending from an edge of the first side portion opposite to the connection side with the placement portion, is bent at the boundary with the first side portion, and is disposed at a position facing the placement portion in the vertical direction with the buffer member sandwiched therebetween to cover the buffer member from above, a second side portion that is a portion extending from an edge of the top surface portion opposite to the connection side with the first side portion, is bent at the boundary with the top surface portion, and extends downward along the second side surface opposite to the first side surface of the buffer member to cover the second side surface, and has a first holding portion having the above, the second side portion has an engagement hole penetrating in a first direction which is a direction in which the first side portion and the second side portion face each other with the buffer member sandwiched therebetween, the base member further has a second holding portion that protrudes upward from an edge of the placement portion opposite to the connection side with the first side portion by raising a part of the base member, the second holding portion is disposed between the buffer member and the second side portion in the first direction, the second holding portion includes a root portion which is a portion on the connection side with the placement portion, a fastening portion extending upward from the root portion, and has the above, the fastening portion is bent at the boundary with the root portion, protrudes outward through the engagement hole from between the buffer member and the second side portion in the first direction, and engages with the edge of the engagement hole, which is a packaging member.

2. The packaging member according to claim 1, wherein the fastening portion has a portion having a width in a second direction larger than an opening width in a second direction that is orthogonal to the first direction and the vertical direction in the engagement hole.

3. The packaging member according to claim 2, wherein the fastening portion has a trapezoidal shape that widens upward from the root portion side when viewed in the first direction.

4. The buffer member is a member having a longitudinal direction in a second direction that is orthogonal to the first direction and the vertical direction, the base member has a plurality of the second holding portions arranged at intervals in the second direction, and each of the plurality of the second holding portions has the root portion and the fastening portion. The packaging member according to claim 1, wherein the second side portion has a plurality of engaging holes with which the plurality of fastening portions are respectively engaged.

5. The packaging member according to claim 1, wherein the buffer member is formed by laminating a plurality of buffer sheet materials.

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