JP2016088417A - Impact absorption bag and impact absorption apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an impact absorption bag with a simple configuration, which can reliably absorb landing impact to prevent damage to an article, and reduce cost.SOLUTION: An impact absorption bag 10 comprises an outer bag 20 which holds an article Z inside and has a pressure reduction valve 21. The article Z is put in the outer bag 20 and fixed inside the bag, and the outer bag 20 is used in a state of forcibly feeding air inside the outer bag 20 and forming a pressure air part 25 having a predetermined air pressure. When an impact exceeding a certain level is applied to the outer bag 20, the pressure reduction valve 21 opens to release the air inside the outer bag 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an impact absorbing bag and an impact absorbing device, and more particularly, to an impact absorbing bag that protects an internal article by absorbing an impact when an article is dropped inside and dropped, and an impact absorbing apparatus using the same. Is.

  Conventionally, there are cases where articles are dropped and supplied, such as dropping and supplying heavy relief supplies from an airplane or helicopter. In such a case, when the article lands, it receives a severe impact, and the impact causes problems such as damage to the article.

  In addition, in order to solve such problems, there has been proposed a device that is equipped with an airbag that opens upon impact of landing, and that absorbs the impact by the airbag to protect internal articles (for example, patents). Reference 1).

JP 2006-213236 A

  However, the conventional shock absorbing device as described in Patent Document 1 requires a complicated device for operating the airbag, which is a problem in terms of stable shock absorbing action and cost.

  The present invention has been made in view of such circumstances. With a simple configuration, the impact of landing can be reliably absorbed, damage to articles can be prevented, and also in terms of cost. An object is to provide an impact-absorbing bag that can be kept at a low cost.

  In order to solve this problem, the invention according to claim 1 of the present invention is an impact-absorbing bag having an outer bag for holding an article and holding it inside, and having a pressure reducing valve in the outer bag, Put the article in the outer bag and fix it inside, use it in a state where a pressure air part having a predetermined air pressure is formed by press-fitting air into the outer bag, and the outer bag in the state is more than a certain amount When the shock is applied, the pressure reducing valve is opened, and the shock absorbing bag is configured such that the air inside the outer bag is released.

  The invention according to claim 2 of the present invention, in addition to the invention according to claim 1, is characterized in that the pressure reducing valve is a predetermined flexibility formed so that a valve port protrudes on the inner side of the outer bag. When an impact of a certain level or more is applied to the outer bag with the pressure air portion formed therein, the valve port of the pressure reducing valve is reversed from the inner side to the outer side, and the valve port Projecting to the outside and opening so that the air inside the outer bag can escape.

  Moreover, in addition to the invention of Claim 1 or 2, the invention of Claim 3 of this invention hold | maintains the inner bag which puts and hold | maintains the said article in the inside of the said outer bag. Pressure air having a predetermined air pressure by press-fitting air between the inner bag and the outer bag in a state where the inner bag in which the article is put is held at a predetermined position inside the outer bag. By forming the portion, the inner bag holding the article is compressed and crimped to the article, and the inner bag is fixed at a predetermined position inside the outer bag. And

  The invention according to claim 4 of the present invention is configured by attaching a parachute to the shock absorbing bag according to any one of claims 1 to 3 in a state in which an article is placed and a pressure air portion is formed. A shock absorbing device is provided.

  According to the invention described in claim 1 of the present invention, the shock absorbing bag has a pressure reducing valve in the outer bag, and is used by forming a pressure air portion inside the outer bag in which the article is put. Since the pressure reducing valve opens and the air in the pressure air part is released when a certain level of impact is applied to the outer bag in this state, the first shock is applied by the pressure of the air in the pressure air part. Absorbs and then suppresses the force that the shock absorbing bag tries to bounce with the elastic force generated by the pressure of the air in the pressure air section by opening the pressure reducing valve by the first impact and letting out the air inside the outer bag Can do. Therefore, it is possible to suppress the two-stage impact of the initial impact and the subsequent force to try to play. As a result, the impact of landing can be reliably absorbed with a simple configuration, the article can be prevented from being damaged, and the cost can be reduced at a low cost.

  According to the second aspect of the present invention, when a certain impact is applied to the outer bag, the valve port of the pressure reducing valve provided on the outer bag is reversed from the inner side to the outer side, Since the mouth protrudes and opens to the outside and the air in the pressure air part is released, it is possible to absorb the impact of landing with a simpler structure and prevent damage to the article. In addition, the cost can be further reduced.

  According to the invention described in claim 3 of the present invention, the shock absorbing bag has an inner bag inside the outer bag, and the pressure air portion is provided between the inner bag and the outer bag containing articles. Since the inner bag is fixed in a suspended state in the outer bag by this pressure, the inner article can be reliably fixed with a simple configuration. As a result, it is possible to prevent the internal article from hitting the outside through the outer bag, thereby preventing the article from being damaged.

  According to the invention described in claim 4 of the present invention, the impact absorbing device is constructed by attaching a parachute to an impact absorbing bag in a state where an article is placed and a pressure air portion is formed. The impact when landing from a location can be absorbed by an impact-absorbing bag after reducing the falling speed with a parachute to lighten the impact. As a result, even if the article falls from a very high position, the inside article can be protected without breaking.

It is a front view of the shock absorption bag which concerns on embodiment of this invention. 2A and 2B are cross-sectional views taken along line AA of FIG. 1, in which FIG. 1A is a diagram illustrating a state where an air inflow pipe is inserted into a pneumatic valve, and FIG. It is a figure which shows a mode that the shock absorption bag of the impact-absorbing device which concerns on the same embodiment lands, and air escapes from a pressure air part, (a) is in the state of falling, (b) is the state immediately after landing, ( (c) is a figure which shows the state which air has escaped from the pressure-reduction valve after landing. It is a figure which shows transition of the state of the pressure-reduction valve | bulb of the impact-absorbing bag which concerns on the embodiment, (a) is a state before air pressure injection, (b) is a state when air is press-fitted into the outer bag, (c)-(f) is a figure which shows a mode that the pressure of air rises rapidly by receiving the impact by landing and a pressure reducing valve reverses and opens.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  When the shock absorbing bag 10 of the present embodiment drops and supplies an article Z such as support supplies toward the ground from a high place such as an airplane or helicopter flying in the sky, the article Z It is used to prevent damage due to impact when landing, and as shown in FIG. 1, an outer bag 20 that directly contacts the ground when landing, and an article Z placed inside The inner bag 30 is held inside the outer bag 20. Further, the outer bag 20 is provided with a pressure reducing valve 21 configured to open when a certain level of impact is applied to a part of the surface. Moreover, the impact-absorbing device 1 is configured as shown in FIG. 3A by attaching the parachute 2 above the impact-absorbing bag 10 via a rope 2c.

  Of these, the outer bag 20 is a bag-shaped member made of a strong material such as a tarpaulin material, as shown in FIG. The outer bag 20 has a large outer loading / unloading port 22 on the upper side where the article Z can be loaded / unloaded, and the inner bag 30 in which the article Z is loaded is loaded / unloaded from the outer loading / unloading port 22.

  In addition, as shown in FIGS. 1 and 2, the outer entrance / exit 22 is formed such that two plate-like members are overlapped and bonded on both sides so that the central portion penetrates in the vertical direction. The central portion of the air pressure valve 23 in a state where the two plate-like members are in close contact with each other is expanded and the air pressure input pipe 24 having a predetermined thickness is inserted. It is possible to introduce air into the. Then, as shown in FIG. 2 (a), the compressed air portion 25 is formed by press-fitting air between the inner bag 30 and the outer bag 20 through the pneumatic fitting pipe 24 by a compressor (not shown) or the like. It comes to form. Note that the pneumatic inlet pipe 24 is extracted from the pneumatic inlet valve 23 as shown in FIG. As a result, the plate-like members of the pneumatic valve 23 return to the original close state and close, and air leakage can be prevented.

  Moreover, the outer bag 20 has a pressure reducing valve 21 as shown in FIGS. In the present embodiment, as shown in FIG. 4A, the pressure reducing valve 21 is formed so that a valve port 26 protrudes to the inner side of the outer bag 20, and has a predetermined flexibility. . Further, as the material for the pressure reducing valve 21, in this embodiment, since it is formed integrally with the outer bag 20, tarpaulin is used.

  The pressure reducing valve 21 has a substantially truncated cone shape, and the valve opening 26 at the tip is always open. Then, when air is press-fitted between the outer bag 20 and the inner bag 30 to form the pressure air portion 25, it is bent at a predetermined position on the side surface of the pressure reducing valve 21, as shown in FIG. The valve port 26 is configured to be in a closed state by being pressed against and closely adhered to the inner wall surface of the outer bag 20.

  Also, as shown in FIG. 3 (a), it is dropped from a high place such as an airplane or helicopter, and as shown in FIG. 3 (b), a large impact (hereinafter referred to as the first 1st) applied to the outer bag 20 at the moment of landing. As shown in FIGS. 4C to 4D, the internal pressure of the pressure air portion 25 suddenly increases as a whole and acts on the pressure reducing valve 21. As shown in FIGS. The outer bag 20 in the vicinity of 21 is pushed outward to expand, and as shown in FIG. 4 (e), the valve port 26 that protrudes to the inner side is inverted and protrudes to the outer side. Then, when further pressed, as shown in FIGS. 3 (c) and 4 (f), the valve port 26 is opened, and the air in the pressure air portion 25 is allowed to escape from the valve port 26 to the outside.

  The inner bag 30 is a bag-like member made of an upper material such as a tarpaulin material, like the outer bag 20. The inner bag 30 has an inner loading / unloading port 32 large enough to allow the loading / unloading of the article Z at the upper portion, and the article Z is loaded / unloaded from the inner loading / unloading port 32.

  In addition, as shown in FIGS. 1 and 2, the inner loading / unloading port 32 has two plate-like members stacked and bonded on both sides as shown in FIGS. In general, a pneumatic inlet pipe 33 having a predetermined thickness is inserted by expanding the central portion of the pneumatic inlet valve 33 in a state in which two plate-like members are in close contact with each other. By passing the air, it is possible to remove air from the inner bag 30. Then, as shown in FIG. 2 (a), the compressed air portion 25 is formed by press-fitting air between the inner bag 30 and the outer bag 20 through the pneumatic fitting pipe 24 by a compressor (not shown) or the like. When formed, the inner bag 30 is compressed in accordance with the shape of the article Z placed inside by the pressure, and the air corresponding thereto is inserted into the pneumatic inlet valve 33 disposed in the inner outlet 32. The inner bag 30 is discharged from the pipe 34 and comes into close contact with the article Z.

  At this time, the inner bag 30 at the upper position that does not cover the article Z is also compressed by the pressure of the air, and the inner bag 30 at the position is solidified and fixed by the compression at this time. As a result, the inner bag 30 and the article Z therein are fixed in a suspended state at a predetermined position inside the outer bag 20, so that the article Z does not hit the outside through the outer bag 20. Can stay. Note that the pneumatic inlet pipe 34 is extracted from the pneumatic inlet valve 33 as shown in FIG. As a result, the plate-like members of the pneumatic valve 33 are returned to the original contact state and closed, and re-inflow of air can be prevented.

  Further, when the shock absorbing bag 10 and the shock absorbing device 1 are used, the article Z is put into the inner bag 30 from the inner loading / unloading port 32 and the inner loading / unloading port 32 is squeezed and held as shown in FIG. Further, the pneumatic inlet valve 33 and the pneumatic inlet pipe 34 are inserted into the inner outlet / entry port 32 so that their tips protrude above the inner inlet / outlet port 32, and are inserted into the outer bag 20 through the outer outlet / inlet port 22. Hold inside.

  In this state, the pneumatic inlet valve 23 and the pneumatic inlet pipe 24 are inserted into the outer inlet / outlet port 22 so that their tips protrude above the outer outlet / inlet port 22. Then, a pneumatic cylinder 33 is provided around a short cylindrical mounting portion 2b (FIG. 3) connected to the umbrella body 2a (FIG. 3) of the parachute 2 via a rope 2c and attached to the lower impact absorbing bag 10. An inner bag 30 inserted so that the pneumatic inlet pipe 34 protrudes above the inner outlet 32 is disposed, and the pneumatic inlet valve 23 and the pneumatic inlet pipe 24 cover the inner bag 30 and the mounting portion 2b. The outer bag 20 inserted so as to protrude above the outer loading / unloading port 22 is disposed.

  And the attachment part 2b of the said state, the inner bag 30, and the outer bag 20 are tied together with a strong string (illustration omitted) etc., and it is set as the impact-absorbing device 1 provided with the impact-absorbing bag 10. . At this time, the pressure reducing valve 21 of the outer bag 20 is in a state of protruding to the inner side of the outer bag 20 as shown in FIG.

  Next, the operation of the shock absorbing bag 10 and the shock absorbing device 1 of the present embodiment will be described.

  First, air is press-fitted between the outer bag 20 and the inner bag 30 through the pneumatic inlet pipe 24 inserted into the pneumatic inlet valve 23 to form a pressure air portion 25. When the pressure air portion 25 presses the inner bag 30 from the outside, the inner bag 30 is compressed and compressed to a shape close to the shape of the article Z. Further, by pressing the pressure reducing valve 21 from the inside to the outside with this pressure, as shown in FIG. 4B, the valve port 26 of the pressure reducing valve 21 is pressed and brought into close contact with the wall surface, and there is less air leakage. It is in a state.

  Next, the shock absorbing device 1 is dropped from a high place such as an airplane or a helicopter. Here, the first shock is received when the lower part of the shock absorbing bag 10 of the shock absorbing device 1 is landed on the ground, but the article Z put in the inner bag 30 is increased while the internal pressure of the pressure air portion 25 is increased. Since the air bag is held in the outer bag 20 in a suspended state, the first impact does not act directly on the article Z. Thereby, the force of the first impact can be suppressed, and a large force can be prevented from being applied to the article Z.

  In addition, after receiving the first impact, the outer bag 20 usually acts in the direction in which the elastic force of the pressurized air portion 25 whose internal pressure has increased to repel, thereby causing the outer bag 20 to try to bounce (hereinafter referred to as a second force). Impact). However, in the present embodiment, when an impact of a certain level or more is received as the first impact, the internal pressure of the pressure air portion 25 increases rapidly, and as a result, as shown in FIGS. The pressure reducing valve 21 is reversed by the pressure, and the valve port 26 protrudes to the outside. When the pressure further outward from the pressure reducing valve 21 is received, the valve opening 26 is finally opened, and the air in the pressure air section 25 is released. Thereby, since the internal pressure of the pressure air part 25 falls, the 2nd impact which the outer bag 20 tries to bounce is suppressed, and the outer bag 20 is prevented from bouncing. In this way, the second impact force that the outer bag 20 tries to bounce is suppressed by the release of air from the pressure reducing valve 21, and at this time, a large force is not applied to the article Z. Can do.

  As described above, according to the shock absorbing bag 10 according to the present embodiment, the outer bag 20 has the pressure reducing valve 21, and the pressure air portion 25 is formed inside the outer bag 20 containing the article Z. Since the pressure reducing valve 21 is opened and the air in the pressure air portion 25 is released when an impact of a certain level or more is given to the outer bag 20 in this state, the first impact ( (The first impact) is absorbed by the pressure of the air in the pressure air portion 25, and then the force (second impact) that the shock absorbing bag 10 tries to bounce with the elastic force generated by the pressure of the air in the pressure air portion 25. This can be suppressed by opening the pressure reducing valve 21 by the first impact and releasing the air inside the outer bag 20. For this reason, it is possible to suppress two-stage impacts, that is, the first impact (first impact) and the force to be subsequently played (second impact). As a result, the impact of landing can be reliably absorbed with a simple configuration, the article can be prevented from being damaged, and the cost can be reduced at a low cost.

  Further, according to the present embodiment, when a certain impact is applied to the outer bag 20, the valve port 26 of the pressure reducing valve 21 provided in the outer bag 20 is reversed from the inner side to the outer side, and the valve port 26 Since it is configured to project outward and open and the air of the pressure air portion 25 is released, the impact of landing can be reliably absorbed with a simpler structure, and the article Z can be prevented from being damaged. In addition, the cost can be further reduced.

  Further, according to the present embodiment, the shock absorbing bag 10 has the inner bag 30 inside the outer bag 20, and the pressure air section 25 is provided between the inner bag 30 containing the article Z and the outer bag 20. Since the inner bag 30 is fixed in a suspended state in the outer bag 20 by this pressure, the inner article Z can be reliably fixed with a simple configuration. As a result, it is possible to prevent the internal article Z from hitting the outside through the outer bag 20 and to prevent the article Z from being damaged.

  In addition, according to the present embodiment, the shock absorbing device 1 is configured by attaching the parachute 2 to the shock absorbing bag 10 in a state where the article Z is inserted and the pressure air portion 25 is formed. The impact when the vehicle is dropped from the ground can be absorbed by the impact-absorbing bag 10 after the dropping speed is reduced by the parachute 2 to reduce the impact. As a result, even if the article Z falls from a very high position, the inside article Z can be protected without breaking.

  Each embodiment described above is described in order to facilitate understanding of the present invention, and is not described in order to limit the present invention.

  For example, the article Z may be fixed inside the outer bag 20 without using the inner bag 30 as long as the article Z is configured to be securely fixed.

  In the above-described embodiment, the shock absorbing bag 10 is attached to the parachute 2 and used as the shock absorbing device 1. However, the present invention is not limited to this. It may be.

  Further, in the above-described embodiment, the pressure reducing valve 21 is formed integrally with the outer bag 20 and normally protrudes to the inner side, and reverses and protrudes to the outer side when a certain level of impact is applied. However, the present invention is not limited to this, and when an impact exceeding a certain level is applied to the outer bag with the pressure air portion formed therein, the valve port of the pressure reducing valve opens and the inner bag of the outer bag is opened. Other structures may be used as long as air can escape. For example, the pressure reducing valve may be attached to the outer bag as a separate body. In addition, the pressure reducing valve is composed of a small hole that is not blocked, such as an orifice, and the amount of air that escapes from this pressure reducing valve is negligibly small until the first impact. After receiving, the amount of air that escapes increases by increasing the internal pressure, and the pressure may be reduced by this.

  In the above-described embodiment, tarpaulin is used as the material for the outer bag 20 and the inner bag 30. However, the present invention is not limited to this, and any suitable material may be used as long as it satisfies the configuration of the present invention. Can be used. Further, the material may be changed between the outer bag and the inner bag.

DESCRIPTION OF SYMBOLS 1 Shock absorber 2 Parachute 10 Shock absorber bag 20 Outer bag 21 Pressure reducing valve 25 Pressure air part 26 Valve opening 30 Inner bag Z Article

Claims (4)

It has an outer bag that holds items inside and holds them inside.
An impact absorbing bag having a pressure reducing valve on the outer bag,
The article is put in the outer bag and fixed therein, and is used in a state where a pressure air portion having a predetermined air pressure is formed by press-fitting air into the outer bag,
An impact-absorbing bag, wherein when a certain level of impact is applied to the outer bag in this state, the pressure reducing valve is opened to allow air inside the outer bag to escape. The pressure reducing valve has a predetermined flexibility formed so that a valve port protrudes on the inner side of the outer bag,
When a certain impact is applied to the outer bag with the pressurized air portion formed therein, the valve port of the pressure reducing valve is reversed from the inner side to the outer side, and the valve port protrudes to the outer side. 2. The shock absorbing bag according to claim 1, wherein the shock absorbing bag is opened so that air inside the outer bag can escape. Inside the outer bag is designed to hold an inner bag that holds the article in place,
A pressure air unit having a predetermined air pressure by press-fitting air between the inner bag and the outer bag in a state where the inner bag in which the article is placed is held at a predetermined position inside the outer bag. By forming the inner bag, the inner bag holding the article is compressed and crimped to the article, and the inner bag is fixed to a predetermined position inside the outer bag. The impact-absorbing bag according to claim 1 or 2.   4. An impact absorbing device comprising a shock absorbing bag according to any one of claims 1 to 3 in a state in which an article is placed and a pressure air portion is formed.

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