Cushioning member and cushioning member forming member
阅读说明:本技术 缓冲构件及缓冲构件形成件 (Cushioning member and cushioning member forming member ) 是由 桥本武志 吉田成隆 水口弘美 出野雅和 于 2020-04-02 设计创作,主要内容包括:本发明提供能够实现抑制被折弯的部分处的角部的形成和提高缓冲功能这两者的缓冲构件及缓冲构件形成件。缓冲构件具备树脂片和介质。树脂片具有多个缓冲区域(50),各缓冲区域(50)具有第一缓冲室(51)、第二缓冲室(52)及连结流路(53)。第二方向上的连结流路(53)的长度小于第二方向上的第一缓冲室(51)的长度及第二缓冲室(52)的长度,且一个缓冲区域的连结流路(53)与相邻缓冲区域的连结流路(53)在第二方向上相互分离。连结流路(53)具有如下形状:使从一方的缓冲室流入到连结流路(53)的介质在与第一方向交叉的方向上折曲,并且使从连结流路(53)向另一方的缓冲室流出的介质再次以沿着第一方向的方式折曲。(The invention provides a cushion member and a cushion member forming member capable of realizing both suppression of formation of a corner portion at a bent portion and improvement of a cushion function. The cushion member includes a resin sheet and a medium. The resin sheet has a plurality of buffer areas (50), and each buffer area (50) has a first buffer chamber (51), a second buffer chamber (52), and a connection flow path (53). The length of the connection flow path (53) in the second direction is smaller than the length of the first buffer chamber (51) and the length of the second buffer chamber (52) in the second direction, and the connection flow path (53) of one buffer region and the connection flow path (53) of the adjacent buffer region are separated from each other in the second direction. The connecting channel (53) has the following shape: the medium flowing into the connection channel (53) from one buffer chamber is bent in a direction intersecting the first direction, and the medium flowing out of the connection channel (53) to the other buffer chamber is bent again in the first direction.)
1. A cushioning member is provided with:
a resin sheet welded so as to be bag-shaped; and
a medium enclosed in the resin sheet,
the resin sheet has a plurality of cushion regions each having a shape extending long in a first direction and arranged adjacent to each other in a second direction orthogonal to the first direction,
each of the plurality of buffer areas has:
a first buffer chamber having a shape extending in the first direction;
a second buffer chamber having a shape extending in the first direction and formed at a position separated from the first buffer chamber in the first direction; and
a connection flow path that connects the first buffer chamber and the second buffer chamber,
a length of the connection flow path in the second direction is smaller than a length of the first buffer chamber and a length of the second buffer chamber in the second direction, and the connection flow path of one buffer region of the plurality of buffer regions and the connection flow path of an adjacent buffer region adjacent to the one buffer region of the plurality of buffer regions are separated from each other in the second direction,
the connecting channel has the following shape: the medium flowing into the connection flow path from one of the first buffer chamber and the second buffer chamber in the first direction is bent in a direction intersecting the first direction, and the medium flowing out of the connection flow path to the other of the first buffer chamber and the second buffer chamber is bent again in the first direction.
2. The cushioning member of claim 1,
the connecting channel has the following shape: the medium flowing from the one buffer chamber into the connection channel along the first direction is bent in a direction parallel to the second direction.
3. The cushioning member according to claim 1 or 2, wherein,
the first buffer chamber has a first support portion having a shape that gradually expands in diameter in the second direction as the first support portion separates from the connection channel in the first direction,
the second buffer chamber has a second support portion having a shape that gradually expands in diameter in the second direction as the second support portion separates from the connection channel in the first direction.
4. A cushion member forming member which is formed of a resin sheet welded so as to be formed into a bag shape and in which a medium is sealed in the resin sheet, the cushion member forming member comprising:
a plurality of partition welding parts forming a plurality of buffer regions each having a shape extending long in a first direction and arranged adjacent to each other in a second direction orthogonal to the first direction; and
a partition weld portion that partitions each of the plurality of buffer regions into a first buffer chamber having a shape extending in the first direction, a second buffer chamber having a shape extending in the first direction and formed at a position separated from the first buffer chamber in the first direction, and a connection flow path that connects the first buffer chamber and the second buffer chamber,
the partition weld has:
a first protruding weld formed on one side of the connection flow path in the first direction and having a shape protruding from one of the plurality of divided welds to an adjacent divided weld adjacent to the one of the plurality of divided welds;
a second protruding weld formed on the other side of the connection flow path in the first direction and having a shape protruding from the adjacent divided weld toward the one divided weld;
a first opposing weld formed on one side of the connection channel in the second direction and having a shape protruding from the one divided weld toward the adjacent divided weld; and
a second opposing weld formed on the other side of the connection flow path in the second direction and having a shape protruding toward the first opposing weld from a portion of the adjacent divided weld that faces the first opposing weld,
an inter-facing portion dimension between the first facing weld and the second facing weld in the second direction is larger than a dimension of the first facing weld and a dimension of the second facing weld in the first direction,
the first and second protruding welded portions have overlapping portions that overlap each other in the first direction with the connecting channel interposed therebetween.
5. The cushioning member formation according to claim 4, wherein,
the inter-facing portion dimension is 70% or less of a dimension between the one division welded portion and the adjacent division welded portion in the second direction.
6. The cushioning member formation member according to claim 4 or 5, wherein,
the first projection weld portion has a first inclined portion that is inclined so as to gradually approach the one partition weld portion as the first projection weld portion is separated from the connection flow path,
the second projection weld portion has a second inclined portion that is inclined so as to gradually approach the adjacent partition weld portion as it separates from the connection flow path.
7. The cushioning member formation according to claim 6, wherein,
an angle formed by the first inclined portion and the one division welded part and an angle formed by the second inclined portion and the adjacent division welded part are 30 degrees or more and 60 degrees or less.
8. The cushioning member formation member according to any one of claims 4 to 7, wherein,
the cushion member forming member further includes an injection portion provided at an end portion of the first cushion chamber opposite to the side where the connection flow path is located, for injecting the medium into the cushion region.
9. The cushioning member formation of claim 8, wherein,
the cushioning member forming member further includes a check valve provided in the injection portion,
the check valve allows the medium to flow from the injection portion into the buffer area and prohibits the medium from flowing out of the buffer area.
Technical Field
The present invention relates to a cushioning member and a cushioning member forming member.
Background
Conventionally, a cushioning member used when packing an object to be packed is known. For example, japanese patent application laid-open No. 2013-173553 (hereinafter, referred to as "patent document 1") discloses an air cushion member (cushion member) in which air is sealed in a resin sheet welded so as to be in a bag shape. The air cushion member has a plurality of bulging portions partitioned by a cross partition weld. Each of the inflatable portions has an air flow passage and a plurality of divided inflatable portions provided so as to be continuous in one direction, the air flow passage connecting the divided inflatable portions adjacent to each other. Each of the divided swelling portions is divided by a bent welded portion, and an air flow path is defined by the bent welded portion. The bent welded portion has a pair of protruding portions having a shape protruding from the cross partition welded portion in a direction orthogonal to the one direction.
The air cushion member is disposed between the object to be packed and the corrugated box in a state of being bent at the bent and welded portion. Here, the tip end of each protruding portion is formed in a rounded shape. This can prevent wrinkles from being formed in the vicinity of the protruding portion when each expansion portion is bent at the bent and welded portion.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-173553
Problems to be solved by the invention
In the cushioning member described in patent document 1, the cushioning function against the external force applied to the corrugated box from the outside of the corrugated box is insufficient.
Disclosure of Invention
The purpose of the present invention is to provide a cushioning member and a cushioning member forming member that can achieve both suppression of formation of corners at bent portions and improvement of a cushioning function.
Means for solving the problems
A cushion member according to one aspect of the present invention includes a resin sheet welded so as to be in a bag shape, and a medium sealed in the resin sheet. The resin sheet has a plurality of cushion regions each having a shape extending long in a first direction and arranged adjacent to each other in a second direction orthogonal to the first direction, each of the plurality of cushion regions having: a first buffer chamber having a shape extending in the first direction; a second buffer chamber having a shape extending in the first direction and formed at a position separated from the first buffer chamber in the first direction; and a connection flow path that connects the first buffer chamber and the second buffer chamber. The length of the connection flow path in the second direction is smaller than the length of the first buffer chamber and the length of the second buffer chamber in the second direction, and the connection flow path of one of the plurality of buffer regions and the connection flow path of an adjacent one of the plurality of buffer regions adjacent to the one buffer region are separated from each other in the second direction. The connecting channel has the following shape: the medium flowing into the connection flow path from one of the first buffer chamber and the second buffer chamber in the first direction is bent in a direction intersecting the first direction, and the medium flowing out of the connection flow path to the other of the first buffer chamber and the second buffer chamber is bent again in the first direction.
In the present cushion member, since the length of the connection flow path in the second direction is smaller than the length of the first cushion chamber and the length of the second cushion chamber in the direction and the connection flow path of one cushion region and the connection flow path of the adjacent cushion region are separated from each other in the second direction, each cushion region can be bent in the connection flow path, and the overlapping of the end portions of the connection flow paths adjacent to each other in the second direction among the plurality of cushion regions in the second direction is suppressed. Therefore, the formation of the corner portion of the portion (bent portion) connecting the end portion of the flow path and the vicinity thereof can be suppressed.
Further, since the connection flow path of the present cushion member has a shape in which the medium flowing into the connection flow path from one of the cushion chambers in the first direction is bent in a direction intersecting the first direction and the medium flowing out of the connection flow path to the other cushion chamber is bent again in the first direction, the medium flowing from the one cushion chamber to the other cushion chamber by applying an external force to the one cushion chamber is bent twice while passing through the connection flow path. Since a part of the impact energy generated by the external force is consumed by the resistance when the medium passes through the connection flow path, the cushioning function of the cushioning member is improved.
Further, it is preferable that the connection channel has the following shape: the medium flowing from the one buffer chamber into the connection channel along the first direction is bent in a direction parallel to the second direction.
Thus, the cushioning function of the cushioning member is more reliably improved.
Preferably, the first buffer chamber has a first support portion having a shape that gradually expands in diameter in the second direction as separating from the connection channel in the first direction, and the second buffer chamber has a second support portion having a shape that gradually expands in diameter in the second direction as separating from the connection channel in the first direction.
In this way, since the connection flow path is supported by the first support portion and the second support portion, it is possible to suppress the connection flow path from being bent and thus forming a corner portion in the connection flow path.
Further, a cushion member forming member according to an aspect of the present invention is a cushion member forming member formed of a resin sheet welded so as to be in a bag shape, and a medium is sealed in the resin sheet to form a cushion member. The cushioning member forming member has: a plurality of partition welding parts forming a plurality of buffer regions each having a shape extending long in a first direction and arranged adjacent to each other in a second direction orthogonal to the first direction; and a partition weld portion that partitions each of the plurality of buffer regions into a first buffer chamber having a shape extending in the first direction, a second buffer chamber having a shape extending in the first direction and formed at a position separated from the first buffer chamber in the first direction, and a connection flow path that connects the first buffer chamber and the second buffer chamber. The partition weld has: a first protruding weld formed on one side of the connection flow path in the first direction and having a shape protruding from one of the plurality of divided welds to an adjacent divided weld adjacent to the one of the plurality of divided welds; a second protruding weld formed on the other side of the connection flow path in the first direction and having a shape protruding from the adjacent divided weld toward the one divided weld; a first opposing weld formed on one side of the connection channel in the second direction and having a shape protruding from the one divided weld toward the adjacent divided weld; and a second opposing weld formed on the other side of the connection channel in the second direction and having a shape protruding toward the first opposing weld from a portion of the adjacent divided weld that faces the first opposing weld. An inter-opposing portion dimension between the first opposing weld and the second opposing weld in the second direction is larger than a dimension of the first opposing weld and a dimension of the second opposing weld in the first direction. The first and second protruding welded portions have overlapping portions that overlap each other in the first direction with the connecting channel interposed therebetween.
In the present cushioning member forming member, since the dimension between the opposing portions in the state where the medium is not sealed in the resin sheet is larger than the dimension of the first opposing welded portion and the dimension of the second opposing welded portion in the first direction, the connecting flow path is formed in a columnar shape that is long in the second direction by sealing the medium in the resin sheet. Further, since the first opposing weld portion and the second opposing weld portion are formed at the portion adjacent to the connection flow path in the second direction, it is possible to bend each buffer region at the connection flow path and suppress overlapping of the end portions of the plurality of buffer regions in the second direction of the connection flow path adjacent to each other in the second direction. Therefore, the formation of the corner portion of the portion (bent portion) connecting the end portion of the flow path and the vicinity thereof can be suppressed.
Further, since the first projection weld and the second projection weld of the present cushioning member forming member have overlapping portions that overlap each other in the first direction with the connection flow path therebetween, when an external force acts on one cushion chamber and a medium flows from the one cushion chamber to the other cushion chamber, the medium bends twice in the connection flow path. For example, when an external force acts on the first cushion chamber, the medium flowing from the first cushion chamber to the second cushion chamber collides with the first protruding weld portion in the first direction in the connection flow path, collides with the second opposing weld portion in the second direction, and then flows into the second cushion chamber again in the first direction. Since a part of the impact energy generated by the external force is consumed by the resistance when the medium passes through the connection flow path, the cushioning function of the cushioning member is improved.
The weld formed at the position across each partition weld functions as a region that absorbs wrinkles that occur in the cushioning material.
Preferably, the dimension between the facing portions is 70% or less of the dimension between the one division welded part and the adjacent division welded part in the second direction.
In this way, overlapping of the ends in the second direction of the connecting flow paths adjacent to each other in the second direction is more reliably suppressed.
Preferably, the first projection weld portion has a first inclined portion that is inclined so as to gradually approach the one divided weld portion as it separates from the connection flow path, and the second projection weld portion has a second inclined portion that is inclined so as to gradually approach the adjacent divided weld portion as it separates from the connection flow path.
In this way, the portion of the first buffer chamber adjacent to the connection flow path and the portion of the second buffer chamber adjacent to the connection flow path gradually expand in diameter in the second direction as they separate from the connection flow path, and therefore, the portions function as support portions for supporting the connection flow path. Therefore, the connection flow path can be prevented from being bent and a corner portion can be formed in the connection flow path.
Preferably, an angle formed by the first inclined portion and the one division welded part and an angle formed by the second inclined portion and the adjacent division welded part are 30 degrees or more and 60 degrees or less.
In this way, the above-described effects are more reliably achieved.
Preferably, the buffer member forming member further includes an injection portion provided at an end portion of the first buffer chamber opposite to the side where the connection flow path is located, for injecting the medium into the buffer region.
This facilitates the injection of the medium into the buffer region.
The cushioning member forming member may further include a check valve provided in the injection portion. In this case, it is preferable that the check valve allows the medium to flow from the injection portion into the buffer area and prohibits the medium from flowing out from the buffer area.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, according to the present invention, it is possible to provide a cushion member and a cushion member forming member capable of achieving both suppression of formation of a corner portion at a bent portion and improvement of a cushion function.
Drawings
Fig. 1 is a perspective view schematically showing a packaged state in which an image forming apparatus according to an embodiment of the present invention is packaged in an outer package case.
Fig. 2 is a view showing a state where the outer package case is detached from the packaged state shown in fig. 1.
Fig. 3 is an exploded perspective view of a plurality of members used for packaging the image forming apparatus shown in fig. 2.
Fig. 4 is a perspective view of the foam in the plurality of members shown in fig. 3, as viewed from the bottom surface side.
Fig. 5 is a perspective view of a cushioning member of the plurality of members shown in fig. 3.
Fig. 6 is a plan view of a cushioning-member-forming member according to an embodiment of the present invention.
Fig. 7 is an enlarged view of the periphery of the connection flow path of the specific cushioning-member forming member.
Fig. 8 is a view showing a state in which an external force is applied to the outer packing box in the packed state shown in fig. 1.
Fig. 9 is a plan view showing a modification of the partition weld.
Description of reference numerals
10 image forming apparatus, 10A apparatus body, 10A discharge tray, 10B reading apparatus, 11 tray, 11A positioning member, 12 plate-like pad, 12A notch, 12B engaging hole, 13, 14, 15, 16 foam, 13A, 14A, 15A, 16A engaging recess, 13B, 14B, 15B, 16B engaging protrusion, 21 outer case, 22 fixing member, 31, 32, 33, 34, 35 buffer member, 31A first buffer portion, 31B second buffer portion, 31C connecting portion, 31S notch, 31F buffer member forming member, 50 buffer region, 51 first buffer chamber, 51A first support portion, 52 second buffer chamber, 52A second support portion, 53 connecting flow path, 60 partition welding portion, 61 one partition welding portion, 62 adjacent partition welding portion, 70 partition welding portion, 71 first facing welding portion, 71A first guiding inclined portion, 72 second opposing weld, 72a second guiding angled portion, 73 first protruding weld, 73a first angled portion, 73b overlapping portion, 73c first receiving portion, 74 second protruding weld, 74a second angled portion, 74b overlapping portion, 74c second receiving portion, 80 injection portion, 81 first resin sheet, 82 second resin sheet, 90 check valve.
Detailed Description
Embodiments of the present invention are explained with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.
Fig. 1 is a perspective view schematically showing a packaged state in which an image forming apparatus according to an embodiment of the present invention is packaged in an outer package case. Fig. 2 is a view showing a state where the outer package case is detached from the packaged state shown in fig. 1. Fig. 3 is an exploded perspective view of a plurality of members used for packaging the image forming apparatus shown in fig. 2. The packaged state in which the
As shown in FIGS. 1 to 3, when packaging the
The
The plate-
Notches 12A are provided at four corners of the plate-
The plate-shaped
The
Fig. 4 is a perspective view of the foam in the plurality of members shown in fig. 3, as viewed from the bottom surface side. As shown in fig. 4, an engagement recess 16A recessed upward and an engagement projection 16B projecting downward are provided on the bottom surface of the
The engaging recessed portions 13A to 16A of the
As shown in FIGS. 2 and 3, the
The plurality of
The plurality of
The plurality of
When the
As described above, the object to be packed such as the
Now, the
As shown in fig. 5, the
The
The
The connection portion 31C connects the
By providing the
The number of the
As shown in fig. 6 and 7, each
The
The
The
In the present embodiment, the cushioning
The injection portion 80 is a portion for injecting the medium into the
The check valve 90 is provided in the injection portion 80. More specifically, the check valve 90 is disposed between the injection portion 80 and the
Next, a welded portion provided in the
Each partition welded
As shown in fig. 6 and 7, the plurality of division welded
The partition welded portion 70 partitions each
The
The partition welded part 70 includes a first opposing welded
First opposing welded
As shown in fig. 7, the first
The second
As shown in fig. 7, the second opposing
As shown in fig. 7, an inter-opposing portion dimension L1 between the first opposing welded
The inter-facing portion dimension L1 is preferably set to 70% or less of the dimension L3 between one divided
Since the facing portion dimension L1 is set within the above range, the length of the connecting
The
As shown in fig. 7, first projection welded
The
As shown in fig. 7, the second projection welded
The
In the present embodiment, partition weld 70 is formed in a point-symmetric shape with respect to a symmetric point located at the center of
Next, a case where an external force acts on the
Since the first
Further, since the first opposing
The partition weld 70 formed at a position across each
Further, since the inter-facing-portion dimension L1 is 70% or less, more preferably 2/pi or less, of the dimension L3 in a state where the medium is not enclosed in the
Further, since the inter-facing-portion dimension L1 is set to 10% or more of the dimension L3, double bending of the medium when the medium passes through the connecting
Further, since the
In addition, since the
Further, since the bending rigidity of the portion near the
Further, it should be considered that: all points in the embodiments disclosed herein are exemplary and not intended to be limiting. The scope of the present invention is defined by the scope of the claims, not by the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.
For example, as shown in fig. 9, the first opposing
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