JP2007320637A - Pneumatic shock absorption material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pneumatic shock absorption material which prevents the breakage of an air chamber and sufficiently protects a protected object when outside air-pressure fluctuates or external force is added. <P>SOLUTION: The pneumatic shock absorption material includes main air chambers A1, A2, A3, and A4 arranged at the peripheral edge of a product storage part C which stores a product 20, sub air chambers B1, B2, B3, and B4 arranged adjacent to the main air chambers, and check valves arranged between the main air chambers and the sub air chambers. In an initial stage, air is enclosed in the main chambers to protect the product 20 from impact from side directions and angular directions [refer to Fig. (a)]. When the outside air pressure decreases and the pressure in the main air chambers becomes above a specified value, the air in the main air chambers moves to the sub air chambers through the check valves and prevents the breakage of the main air chambers [refer to Fig. (b)]. When the external force increases and the pressure in the main air chambers becomes below the specified value, the product is protected from the impact from the side directions and the angular directions by the main air chambers and the sub air chambers [refer to Fig. (c)]. At that time, the sub air chambers compensate a decrease in shock absorption force of the main air chambers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air-filled cushioning material, and more particularly to an air-filled cushioning material that protects an object to be protected by housing or packaging the object to be protected.

  Products, especially cameras, vary in size and shape depending on the model, but designing a box to store the product for each model imposes a heavy design load. The box is shared by using an air-filled cushioning material that forms an air chamber.

  However, there has been a problem that the air chamber is damaged due to an increase in the pressure of the air chamber, such as when the external air pressure is reduced by transportation by an aircraft or when an external force is applied to the air-filled cushioning material.

In order to cope with this, the main vesicle is provided with the main vesicle, and when the main vesicle is compressed by the external pressure, the air enclosed in the main vesicle moves to the sub vesicle so that the main vesicle Air-filled cushioning material (Patent Document 1) that prevents breakage and a plurality of vesicles, and when a certain vesicle is compressed by external pressure, the air enclosed in the vesicle compressed by external pressure is compressed by external pressure An air-filled cushioning material (Patent Document 2) that prevents breakage of each vesicle by moving to an untreated vesicle has been proposed.
Japanese Patent Laid-Open No. 2003-341739 JP 2004-323048 A

  However, the above patent document has the following drawbacks. In Patent Document 1, since the secondary vesicle does not contribute to buffering, there is a problem that the buffering capacity is lowered after air moves from the primary vesicle to the secondary vesicle. In patent document 2, since air was enclosed with all the vesicles, there existed a problem that it cannot respond, when air expand | swells by the fluctuation | variation of external atmospheric pressure.

  The present invention has been made in view of such circumstances, and when air pressure fluctuates or when an external force is applied, it is possible to prevent damage to the air chamber and to sufficiently protect the object to be protected. An object is to provide a cushioning material.

  In order to achieve the object, an air-filled cushioning material according to claim 1 is disposed adjacent to a product storage unit, a main air chamber disposed at a peripheral portion of the product storage unit, and the main air chamber. A sub-air chamber provided, and a valve disposed between the main air chamber and the sub-air chamber, wherein the main air chamber is filled with air to buffer the product, When the pressure of the main air chamber becomes a certain value or more due to fluctuations or external force, the air enclosed in the main air chamber moves to the sub air chamber through the valve. Accordingly, it is possible to provide an air-filled cushioning material that prevents the air chamber from being damaged when the external air pressure fluctuates or when an external force is applied.

  An air-filled cushioning material according to a second aspect of the present invention is the air-filled cushioning material according to the first aspect, wherein the product storage portion is a through hole. As a result, it is possible to provide an air-filled cushioning material that prevents damage to the air chamber when the external air pressure fluctuates or when an external force is applied, with a simple configuration.

  An air-filled cushioning material according to a third aspect is characterized in that in the air-filled cushioning material according to the first aspect, the product storage portion is bag-shaped. Thereby, the protection target object of various magnitude | sizes can be accommodated.

  The air-filled cushioning material according to claim 4 is the air-filled cushioning material according to any one of claims 1 to 3, wherein the product storage portion is a quadrangle, and the main air chamber has four sides of the product storage portion. The auxiliary air chamber is disposed adjacent to the four corners of the product storage section. Thereby, a protection target object can be protected more effectively.

  The air-filled cushioning material according to claim 5 includes a product housing member and a cushioning member having a through hole, and assembles the product housing member and the cushioning member by inserting the product housing member into the through hole. An air-filled cushioning material, wherein the product storage member includes a first main air chamber, a first sub air chamber disposed adjacent to the first main air chamber, and the first main air chamber. A first valve disposed between an air chamber and the first sub air chamber; and a product storage disposed on a front surface of the first main air chamber. A second main air chamber disposed at a peripheral edge of the through hole; a second sub air chamber disposed adjacent to the second main air chamber; the second main air chamber; A second valve disposed between the second sub air chambers, and the first main air chamber and the second main air chamber are empty to buffer the product. Is sealed in the first main air chamber when the pressure in the first main air chamber and the second main air chamber exceeds a certain value due to fluctuations in external air pressure or external force. The air being moved moves to the first sub air chamber through the first valve, and the air enclosed in the second main air chamber passes through the second valve to the second sub air chamber. It is characterized by moving. Thereby, a protection target object can be accommodated easily.

  An air-filled cushioning material according to a sixth aspect of the present invention is the air-filled cushioning material according to the fifth aspect, characterized in that the product storage portion is bag-shaped. Thereby, the protection target object of various magnitude | sizes can be accommodated.

  The air-filled cushioning material according to claim 7 is the air-filled cushioning material according to claim 5, wherein a sheet is disposed in front of the first main air chamber, and the product storage member and the cushioning material are arranged. By assembling the members, the product storage portion is disposed between the seat and the first main air chamber. Thereby, various sizes of objects to be protected can be stored with a simple structure.

  The air-filled cushioning material according to claim 8 is the air-filled cushioning material according to any one of claims 5 to 7, wherein a retaining flange is provided in the first main air chamber. It is characterized by. Thereby, a protection target object can be easily accommodated and held.

  The air-filled cushioning material according to claim 9 is the air-filled cushioning material according to any one of claims 5 to 8, wherein the through hole is a quadrangle, and the second main air chamber is a side of the through-hole. The second sub air chamber is arranged at four positions on the corners of the through hole. Thereby, a protection target object can be protected more effectively.

  The air-filled cushioning material according to claim 10 is the air-filled cushioning material according to any one of claims 1 to 9, wherein the valve is a check valve, and air flows from the main air chamber to the sub air chamber. After the movement, the auxiliary air chamber contributes to buffering. Thereby, a protection target object can be protected more effectively.

  The air-filled cushioning material according to claim 11, a product storage unit, a main air chamber disposed at a peripheral portion of the product storage unit, a sub air chamber disposed adjacent to the main air chamber, An elastic body disposed in the auxiliary air chamber, and air is sealed in the main air chamber to buffer the product, and the pressure of the main air chamber is a constant value due to fluctuations in external air pressure or external force In the case of the above, when the air enclosed in the main air chamber moves to the sub air chamber and compresses the elastic body, the pressure of the main air chamber becomes less than a certain value The air moved to the sub air chamber by the restoring force of the elastic body is returned to the main air chamber. Thereby, the buffer function which acts on a protection target object can be made constant.

  According to the present invention, it is possible to provide an air-filled cushioning material capable of preventing the air chamber from being damaged and sufficiently protecting the object to be protected when the external air pressure fluctuates or when an external force is applied.

  The best mode for carrying out the air-filled cushioning material according to the present invention will be described below in detail with reference to the accompanying drawings.

<First Embodiment>
FIG. 1 is an explanatory view showing a transport mode using the air-filled cushioning material 10 of the first embodiment according to the present invention, and FIG. 2 is an explanatory diagram showing an example of the air-filled cushioning material 10. (A) shows an initial state, (b) shows a state in which the external air pressure has decreased, and (c) shows a state in which the external air pressure has increased again after the external air pressure has decreased.

  The air-filled cushioning material 10 includes main air chambers A1, A2, A3, and A4, sub air chambers B1, B2, B3, and B4, and a product storage unit C. The product storage portion C is a hole, and a protection object (product) 20 is stored therein. The main air chambers A1, A2, A3, A4 are arranged along the four sides of the product storage unit C, and the sub air chambers B1, B2, B3, B4 are arranged adjacent to the four corners of the product storage unit C. Has been. The main air chamber A1 is the sub air chambers B1 and B4, the main air chamber A2 is the sub air chambers B1 and B2, the main air chamber A3 is the sub air chambers B2 and B3, and the main air chamber A4 is the sub air chambers B3 and B4. And communicate with each other via a valve (not shown). This valve moves from the main air chambers A1, A2, A3, A4 to the sub air chambers B1, B2, B3, B4 when the pressure in the main air chambers A1, A2, A3, A4 becomes a certain value or more. Is a check valve that allows air to pass but does not allow air to pass from the sub air chambers B1, B2, B3, B4 to the main air chambers A1, A2, A3, A4.

  As shown in FIG. 1, the product 20 is transported in a state where the air-filled cushioning material 10 in which the product 20 is housed is housed in the shipping box 22 and the partition 24 is placed on the upper surface of the air-filled cushioning material 10. . The partition 24 also serves to protect the front surface of the product 20.

  Next, changes in the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 due to fluctuations in the external air pressure will be described.

  Initially, as shown in FIG. 2 (a), air is sealed in the main air chambers A1, A2, A3, and A4, and the product 20 stored in the product storage section C is moved in the side direction and the angular direction. Protects from impact. When the external air pressure decreases and the pressure in the main air chambers A1, A2, A3, A4 exceeds a certain value, it is sealed in the main air chambers A1, A2, A3, A4 as shown in FIG. The air that has been moved moves to the sub air chambers B1, B2, B3, and B4 through a valve (not shown) to prevent the main air chambers A1, A2, A3, and A4 from being damaged. Thereafter, when the atmospheric pressure rises and the pressures of the main air chambers A1, A2, A3, A4 become less than a certain value, as shown in FIG. 2 (c), the main air chambers A1, A2, A3, The air enclosed in A4 and the sub air chambers B1, B2, B3, and B4 contracts, and the outer shape becomes smaller as a whole. Since some of the air initially enclosed in the main air chambers A1, A2, A3, A4 has moved to the sub air chambers B1, B2, B3, B4, the main air chambers A1, A2, A3, A4 Although the buffering force is smaller than that in the initial stage, the buffering force of the sub air chambers B1, B2, B3, and B4 compensates for the decrease in the buffering force caused by the main air chambers A1, A2, A3, and A4. The product 20 accommodated in the part C is protected from side and angular impacts. Here, the sub air chambers B1, B2, B3, and B4 are disposed adjacent to the four corners of the product storage portion C that easily bottoms out, so that a more effective buffering action can be obtained. Further, since the check valve is arranged, even when a strong external force is applied to the sub air chambers B1, B2, B3, B4, the sub air chambers B1, B2, B3, B4 to the main air chambers A1, A2, Air does not move to A3 and A4, and the buffer function can be maintained.

  According to the present embodiment, the air chamber can be prevented from being damaged due to fluctuations in the external air pressure, and the product can be sufficiently protected. In the present embodiment, the case where the pressures of the main air chambers A1, A2, A3, and A4 become a certain value or more due to fluctuations in the external air pressure has been described. However, the main air chamber A1 is caused by an external force such as a drop or a temperature change. The same effect can be obtained when the pressures A2, A3, and A4 exceed a certain value. In the present embodiment, four sub air chambers B1, B2, B3, and B4 are provided. However, as shown in FIG. 3, each of the sub air chambers B1, B2, B3, and B4 includes two parts. The main air chamber A1 is sub air chambers B11 and B42, the main air chamber A2 is sub air chambers B12 and B21, the main air chamber A3 is sub air chambers B22 and B31, and the main air chamber A4 is sub air. You may communicate with chamber B32, B41 via the valve which is not shown in figure, respectively. In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cubic, but may be substantially cylindrical. In the present embodiment, the partition is placed on the air-filled cushioning material and stored in the transport box. However, if there is no gap between the air-filled cushioning material and the top surface of the transport box, the partition There is no need.

<First Modification of First Embodiment>
FIG. 4 is an explanatory view showing an air-filled cushioning material 30 of a first modification of the first embodiment according to the present invention. In addition, the same code | symbol is attached | subjected about the part same as 1st Embodiment in a figure, and description is abbreviate | omitted.

  The product storage part C is bag-shaped. After the product 20 is put in the product storage unit C, the inside of the product storage unit C is evacuated and the entrance is sealed to store the product 20 in the product storage unit C. A main air chamber A5 is disposed on the bottom side of the product storage portion C, and protects the bottom surface of the product 20. The main air chamber A5 communicates with the sub air chambers B1, B2, B3, and B4 through a valve (not shown).

  According to the present embodiment, products of various sizes can be stored. In the present embodiment, the main air chamber A5 is disposed on the bottom side, but the main air chamber A5 is omitted when the main air chambers A1, A2, A3, and A4 can maintain the bottomed state. May be. Further, in this embodiment, the inside of the product storage unit C is deaerated to seal the entrance, but the entrance may be sealed without deaeration, or the entrance may not be sealed. In the present embodiment, the case where the pressures of the main air chambers A1, A2, A3, A4, and A5 become a certain value or more due to fluctuations in the external air pressure has been described. The same effect can be obtained when the pressures in the chambers A1, A2, A3, A4, and A5 exceed a certain value. In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cylindrical, but may be substantially cubic.

<Second Modification of First Embodiment>
FIG. 5 is an explanatory view showing an air-filled cushioning material 40 of a second modification of the first embodiment according to the present invention. In addition, the same code | symbol is attached | subjected about the part same as 1st Embodiment in a figure, and description is abbreviate | omitted.

  The air-filled cushioning material 40 includes a cushioning member 42 and a product storage member 44. The buffer member 42 is composed of main air chambers A1, A2, A3, A4 and sub air chambers B1, B2, B3, B4, and the product storage member 44 is a two-stage main air chamber A5 and sub air chamber B5. , B6 and the product storage section C. The main air chamber A5 communicates with the sub air chambers B5 and B6 via a valve (not shown). The product storage unit C is in a bag shape, and the product 20 is stored in the product storage unit C by bending the entrance toward the main air chamber A5 after the product 20 is placed inside.

  When the product storage member 44 is assembled from the bottom side into the hole disposed in the center of the buffer member 42, the product storage portion C and the first stage of the main air chamber A5 are inserted into the hole, and the main air chamber A5 The second stage is disposed behind the buffer member 42. The second stage of the main air chamber A5 serves as a stopper to suppress the movement of the product storage member 44 to the upper surface side.

  According to the present embodiment, products of various sizes can be stored and held. In the present embodiment, the case where the pressure in the main air chambers A1, A2, A3, A4, and A5 becomes a certain value or more due to fluctuations in the external air pressure has been described. The same effect can be obtained when the pressures in the chambers A1, A2, A3, A4, and A5 exceed a certain value. In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cylindrical, but may be substantially cubic.

<Third Modification of First Embodiment>
FIG. 6 is an explanatory view showing an air-filled cushioning material 50 of a third modification of the first embodiment according to the present invention. In addition, the same code | symbol is attached | subjected about the part same as 1st Embodiment in a figure, and description is abbreviate | omitted.

  The air-filled cushioning material 50 includes a cushioning member 52, a product storage member 54, and a sheet 56. The buffer member 52 is composed of main air chambers A1, A2, A3, A4 and sub air chambers B1, B2, B3, B4, and the product storage member 54 is a two-stage main air chamber A5 and sub air chamber B5. , B6. The main air chamber A5 communicates with the sub air chambers B5 and B6 via a valve (not shown). With the product 20 placed on the front side of the product storage member 54 and the sheet 56 placed on the product 20, the product storage member 54 and the sheet 56 are placed on the bottom surface of the buffer member 52. By assembling from the side, the entire circumference of the product 20 is pressed by the sheet 56 by the product storage member 54, and the product 20 is stored between the product storage member 54 and the sheet 56. When the product storage member 54 is assembled into the hole disposed in the center of the buffer member 52 from the bottom side, the first stage of the main air chamber A5 is inserted into the hole, and the second stage of the main air chamber A5 is buffered. Arranged behind the member 52. The second stage of the main air chamber A5 serves as a stopper to suppress the movement of the product storage member 54 to the upper surface side.

  According to the present embodiment, products of various sizes can be stored and held with a simple configuration. In the present embodiment, the case where the pressure in the main air chambers A1, A2, A3, A4, and A5 becomes a certain value or more due to fluctuations in the external air pressure has been described. The same effect can be obtained when the pressures in the chambers A1, A2, A3, A4, and A5 exceed a certain value. Further, in the present embodiment, the sheet is rectangular and is approximately the same size as the product storage member, but the shape and size are not limited to this as long as the entire circumference of the product can be suppressed by the sheet. . In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cubic, but may be substantially cylindrical.

<Second Embodiment>
FIG. 7 is an explanatory view showing an example of the air-filled cushioning material 60 of the second embodiment according to the present invention, where (a) shows an initial state, and (b) shows a state where the external air pressure has decreased. (C) shows a state in which the external pressure has risen again after the fall. In addition, the same code | symbol is attached | subjected about the part same as 1st Embodiment in a figure, and description is abbreviate | omitted.

  The main air chamber A1 is the sub air chambers B1 and B4, the main air chamber A2 is the sub air chambers B1 and B2, the main air chamber A3 is the sub air chambers B2 and B3, and the main air chamber A4 is the sub air chambers B3 and B4. Are communicated with each other via an air flow passage 62 as shown in FIG. This air flow passage 62 is used when the pressure of one of the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 exceeds a certain value. The air is passed from one side to the other side. The inside of the sub air chambers B1, B2, B3, and B4 is partitioned by a partition 66 as shown in FIG. 8A, and a spring 64 is disposed inside the small chamber 68 partitioned by the partition 66. ing. The partition 66 is biased by a spring 64 so as to increase the volume of the small chamber 68, and the small chamber 68 and the sub air chambers B1 ′, B2 ′, which are in a substantially vacuum state by the biasing force of the spring 64, B3 ′ and B4 ′ are balanced in the state shown in FIG.

  Next, changes in the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 due to fluctuations in the external air pressure will be described.

  Initially, as shown in FIG. 7A, air is sealed in the main air chambers A1, A2, A3, and A4. When the external air pressure decreases and the pressures of the main air chambers A1, A2, A3, and A4 become a certain value or more, as shown in FIGS. 7 (b) and 8 (b), the main air chamber A1, The air enclosed in A2, A3, A4 moves to the sub air chambers B1 ′, B2 ′, B3 ′, B4 ′ through the air flow passage 62 and contracts the small chamber 68 against the biasing force of the spring 64. At the same time, the sub air chambers B1 ′, B2 ′, B3 ′, B4 ′ are expanded to prevent the main air chambers A1, A2, A3, A4 from being damaged. Thereafter, when the external air pressure increases and the pressures of the main air chambers A1, A2, A3, and A4 become less than a certain value, as shown in FIG. 7C, the sub air chamber B1 ′, The air sealed in B2 ′, B3 ′, B4 ′ is pushed out to the main air chambers A1, A2, A3, A4 via the air flow passage 62, and the sub air chambers B1 ′, B2 ′, B3 ′, B4 ′. Contracts.

  According to the present embodiment, the air chamber can be prevented from being damaged due to fluctuations in the external air pressure, and the product can be sufficiently protected. In the present embodiment, the case where the pressures of the main air chambers A1, A2, A3, and A4 become a certain value or more due to fluctuations in the external air pressure has been described. However, the main air chamber A1 is caused by an external force such as a drop or a temperature change. The same effect can be obtained when the pressures A2, A3, and A4 exceed a certain value. In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cubic, but may be substantially cylindrical.

<First Modification of Second Embodiment>
FIG. 9 is an explanatory view showing an example of the air-filled cushioning material 60 ′ of the first modification of the second embodiment according to the present invention. The same parts as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The interiors of the sub air chambers B1, B2, B3, and B4 are partitioned by a partition 66 as shown in FIG. 9A, and a rubber material 70 is disposed inside the small room 68 partitioned by the partition 66. It is installed. When the outside air pressure decreases and the pressure in the main air chambers A1, A2, A3, A4 exceeds a certain value, the main air chambers A1, A2, A3, A4 are sealed as shown in FIG. 9B. The compressed air moves to the sub air chambers B 1 ′, B 2 ′, B 3 ′, B 4 ′ through the air flow passage 62 and simultaneously contracts the small chamber 68 against the urging force of the rubber material 70. The chambers B1 ′, B2 ′, B3 ′, B4 ′ are expanded to prevent the main air chambers A1, A2, A3, A4 from being damaged.

  According to the present embodiment, the air chamber can be prevented from being damaged due to fluctuations in the external air pressure, and the product can be sufficiently protected. In the present embodiment, the case where the pressures of the main air chambers A1, A2, A3, and A4 become a certain value or more due to fluctuations in the external air pressure has been described. However, the main air chamber A1 is caused by an external force such as a drop or a temperature change. The same effect can be obtained when the pressures A2, A3, and A4 exceed a certain value. In the present embodiment, the main air chambers A1, A2, A3, A4 and the sub air chambers B1, B2, B3, B4 are substantially cubic, but may be substantially cylindrical.

It is explanatory drawing which shows the transport form using 1st Embodiment of the air enclosure buffer material to which this invention was applied. It is explanatory drawing which shows 1st Embodiment Example of the said air enclosure buffer material, (a) shows an initial state, (b) shows the state which external air pressure fell, (c) is external air pressure It shows the state where it rose again after falling. It is explanatory drawing which shows 1st Embodiment Example of the said air enclosure buffer material. It is explanatory drawing which shows the 1st modification of 1st Embodiment of the air enclosure buffer material to which this invention was applied. It is explanatory drawing which shows the 2nd modification of 1st Embodiment of the air enclosure buffer material to which this invention was applied. It is explanatory drawing which shows the 3rd modification of 1st Embodiment of the air enclosure buffer material to which this invention was applied. It is explanatory drawing which shows 2nd Embodiment Example of the said air enclosure buffer material, (a) shows an initial state, (b) shows the state where the external air pressure fell, (c) shows external air pressure It shows the state where it rose again after falling. It is principal part sectional drawing of 2nd Embodiment of the air enclosure buffer material to which this invention was applied, (a) shows an initial state, (b) shows the state to which the external pressure fell. It is principal part sectional drawing of 2nd Embodiment of the air enclosure buffer material to which this invention was applied, (a) shows an initial state, (b) shows the state to which the external pressure fell.

Explanation of symbols

10, 30, 40, 50, 60, 60 '... Air-filled cushioning material, 20 ... Product, 22 ... Transport box, 62 ... Air flow passage, 64 ... Spring, 66 ... Partition, 68 ... Small room, 70 ... Rubber system Material

Claims (11)

Product storage,
A main air chamber disposed at the peripheral edge of the product storage portion;
A sub air chamber disposed adjacent to the main air chamber;
A valve disposed between the main air chamber and the sub air chamber;
With
Air is sealed in the main air chamber to buffer the product. When the pressure in the main air chamber exceeds a certain value due to fluctuations in external air pressure or external force, the air is sealed in the main air chamber. The air-filled cushioning material is characterized in that air that has moved moves to the auxiliary air chamber through the valve.   The air-filled cushioning material according to claim 1, wherein the product storage portion is a through hole.   The air-filled cushioning material according to claim 1, wherein the product storage portion has a bag shape.   The product storage section is rectangular, the main air chamber is disposed along four sides of the product storage section, and the sub air chamber is disposed adjacent to the four corners of the product storage section. The air-filled cushioning material according to any one of claims 1 to 3. An air-filled cushioning material comprising a product housing member and a cushioning member having a through hole, and assembling the product housing member and the cushioning member by inserting the product housing member into the through hole,
The product storage member is:
A first main air chamber;
A first auxiliary air chamber disposed adjacent to the first main air chamber;
A first valve disposed between the first main air chamber and the first sub air chamber;
A product storage section disposed in front of the first main air chamber;
With
The buffer member is
A second main air chamber disposed at the peripheral edge of the through hole;
A second sub air chamber disposed adjacent to the second main air chamber;
A second valve disposed between the second main air chamber and the second sub air chamber;
With
Air is enclosed in the first main air chamber and the second main air chamber in order to buffer the product, and the first main air chamber and the second main air chamber are caused by fluctuations in external air pressure or external force. When the pressure of the air chamber becomes a predetermined value or more, the air enclosed in the first main air chamber moves to the first sub air chamber through the first valve, and the second An air-filled cushioning material, wherein air sealed in a main air chamber moves to the second sub-air chamber through the second valve.   The air-filled cushioning material according to claim 5, wherein the product storage portion has a bag shape.   A sheet is disposed on the front surface of the first main air chamber, and the product storage portion is formed between the sheet and the first main air chamber by assembling the product storage member and the buffer member. The air-filled cushioning material according to claim 5, wherein:   The air-filled cushioning material according to any one of claims 5 to 7, wherein a retaining flange is disposed in the first main air chamber.   The through hole is a quadrangle, the second main air chamber is disposed at four positions on the side of the through hole, and the second sub air chamber is disposed at four positions on the corner of the through hole. The air-filled cushioning material according to any one of claims 5 to 8, wherein the cushioning material is filled with air.   10. The valve according to claim 1, wherein the valve is a check valve, and after the air moves from the main air chamber to the sub air chamber, the sub air chamber contributes to buffering. Air-filled cushioning material. Product storage,
A main air chamber disposed at the peripheral edge of the product storage portion;
A sub air chamber disposed adjacent to the main air chamber;
An elastic body disposed in the auxiliary air chamber;
With
Air is sealed in the main air chamber to buffer the product. When the pressure in the main air chamber exceeds a certain value due to fluctuations in external air pressure or external force, the air is sealed in the main air chamber. When the compressed air moves to the sub air chamber and the elastic body is compressed and the pressure of the main air chamber becomes less than a certain value, the air moved to the sub air chamber by the restoring force of the elastic body Is returned to the main air chamber.

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