Air bag energy absorption protection system

Abstract

The utility model discloses an air bag energy absorption protection system which is assembled on an anti-crash seat of a helicopter and comprises cushion air bags arranged on the two sides of a cushion, back cushion air bags arranged on the two sides of a back cushion, a safety belt air bag capable of serving as a safety belt to be installed around the neck and an inflation and deflation device capable of inflating and deflating the air bags. The seat cushion air bag comprises a seat cushion air bag skin positioned on the upper layer and a seat cushion bag body positioned on the lower layer; the back cushion air bag comprises a back cushion air bag skin located on the outer layer and a back cushion bag body located on the inner layer. The safety belt air bag comprises a safety belt air bag skin located on the outer portion and a safety belt bag body located on the inner portion. The system can carry out energy absorption protection on two legs, two sides of an upper body and the head and neck of a passenger during collision, and the riding experience is not affected under the normal flight condition.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of anti-crash of helicopter, and particularly relates to an air bag energy absorption protection system. BACKGROUND

[0002] Related researches show that 99% of helicopter death accidents are caused by impact with the ground, and the cause of death is that the human body cannot withstand the impact force of the ground under high-speed conditions. In order to offset the huge impact force generated by the helicopter impacting the ground as much as possible, the current energy absorption design is carried out on the landing gear and the body, and the anti-crash seat is adopted, but the landing gear, the body and the anti-crash seat are difficult to completely offset the impact force, and the crew members, especially the pilots, still have the situation of serious injury or even loss of life due to the impact of the head or the trunk with the cabin structure. SUMMARY

[0003] The utility model aims at providing an air bag energy absorption protection system, which can absorb energy and protect the legs, both sides of the upper body and the head and neck of the passengers when impacting, and does not affect the riding experience under normal flight conditions.

[0004] The utility model adopts the technical scheme of:

[0005] An air bag energy absorption protection system is assembled on an anti-crash seat of a helicopter, comprising seat cushion air bags arranged on both sides of a seat cushion, back cushion air bags arranged on both sides of a back cushion, a safety belt air bag capable of being installed around the neck as a safety belt, and a gas charging and discharging device capable of charging and discharging each air bag; the seat cushion air bag comprises a seat cushion air bag skin located on an upper layer and a seat cushion capsule located on a lower layer, the seat cushion air bag skin serves as part of the seat cushion, the seat cushion air bag skin is provided with a cutout facilitating tearing, the seat cushion capsule is accommodated in the seat cushion air bag skin when not inflated, and the seat cushion capsule can smoothly pop out by tearing the cutout when inflated; the back cushion air bag comprises a back cushion air bag skin located on an outer layer and a back cushion capsule located on an inner layer, the back cushion air bag skin serves as part of the back cushion, the back cushion air bag skin is provided with a cutout facilitating tearing, the back cushion capsule is accommodated in the back cushion air bag skin when not inflated, and the back cushion capsule can smoothly pop out by tearing the cutout when inflated; the safety belt air bag comprises a safety belt air bag skin located on an outer part and a safety belt capsule located on an inner part, the safety belt air bag skin serves as part of a seat belt of the anti-crash seat, is detachably installed on the seat belt, and is provided with a cutout facilitating tearing along a line, the safety belt capsule is accommodated in the safety belt air bag skin when not inflated, and the safety belt capsule can smoothly pop out by tearing the cutout when inflated.

[0006] Preferably, the energy-absorbing material layer is attached to the lower side of the seat cushion airbag, the inner side of the back cushion airbag and the inner side of the safety belt airbag, and the energy-absorbing material layer can change the hardness with the temperature change to adjust the energy-absorbing performance; the energy-absorbing material layer is adjusted by an energy-absorbing material layer temperature control module, and the energy-absorbing material layer temperature control module comprises an energy-absorbing material layer temperature controller and temperature sensors and electric heating elements installed at each energy-absorbing material layer, and each temperature sensor and electric heating element is electrically connected with the energy-absorbing material layer temperature controller.

[0007] Preferably, the system further comprises an airbag temperature control module for monitoring and adjusting the temperature of the gas filled into the airbag to maintain the temperature inside the inflated airbag in a suitable range to avoid the inflated airbag from burning the passenger; the airbag temperature control module comprises an airbag temperature controller and temperature sensors and electric cooling elements installed at the entrances of the airbags, and the temperature sensors and electric cooling elements are electrically connected with the airbag temperature controller.

[0008] Preferably, the inflating and deflating device comprises an inflating and deflating controller and inflating and deflating mechanisms corresponding to the airbags; the inflating and deflating mechanism comprises a gas cylinder, a control valve, a deflation valve and a gas path, the gas cylinder, the control valve, the gas path and the corresponding airbag are connected in sequence, and the deflation valve is connected in parallel between the control valve and the gas path; the control valve and the deflation valve are electrically connected with the inflating and deflating controller.

[0009] Preferably, the airbag body of each airbag is a plurality of small airbag bodies independent of each other.

[0010] Preferably, the cross section of the safety belt airbag skin and the safety belt airbag body is C-shaped.

[0011] Preferably, the seat cushion airbag skin and the back cushion airbag skin are made of foam material.

[0012] Preferably, the safety belt airbag skin is made of PU coating fabric.

[0013] Preferably, the seat cushion airbag body, the back cushion airbag body and the safety belt airbag body are made of high-toughness composite material.

[0014] The beneficial effects of the utility model are as follows:

[0015] In the system, the airbags are arranged at key positions, the inflating and deflating device inflates the airbags when impacting, and the energy-absorbing protection can be performed on the legs of the passenger, the two sides of the upper body and the head and neck, and the flying normal condition does not affect the riding experience. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is the schematic diagram of the air bag energy absorption protection system assembled on the anti-crash seat in the utility model Figure 1 .

[0018] Figure 2 is the schematic diagram of the air bag energy absorption protection system assembled on the anti-crash seat in the utility model Figure 2 .

[0019] Figure 3 is the schematic diagram of the seat cushion air bag in the utility model.

[0020] Figure 4 is the schematic diagram of the back cushion air bag in the utility model.

[0021] Figure 5 is the schematic diagram of the safety belt air bag in the utility model.

[0022] Figure 6 is Figure 5 the sectional view of A-A.

[0023] Figure 7 is the structure block diagram of the energy absorption material layer temperature control module in the utility model.

[0024] Figure 8 is the structure block diagram of the air bag temperature control module in the utility model.

[0025] Figure 9 is the structure block diagram of the inflation and deflation device in the utility model.

[0026] In the figure: 1-anti-crash seat; 2-seat cushion air bag; 3-back cushion air bag; 4-safety belt air bag; 6-seat cushion air bag skin; 7-seat cushion air bag body; 8-energy absorption material layer; 9-electric heating element; 10-temperature sensor; 11-back cushion air bag skin; 12-back cushion air bag body; 13-safety belt air bag skin; 14-safety belt air bag body. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0029] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0030] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "arranged", "mounted", "connected", and "linked" should be understood broadly, for example, can be fixedly connected, or detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

[0031] The features and performances of the application are further described in detail below in combination with embodiments.

[0032] Embodiment One

[0033] The embodiment discloses an intelligent airbag energy-absorbing protection system, which is assembled on a crashworthy seat 1 of a helicopter, as shown in Figure 1 and Figure 2 , and includes a seat cushion airbag 2, a back cushion airbag 3, a safety belt airbag 4, and a gas charging and discharging device; as shown in Figure 1 and Figure 2 , the seat cushion airbag 2 is arranged on both sides of the seat cushion, as shown in Figure 3 , the seat cushion airbag 2 includes a seat cushion airbag skin 6 located on the upper layer and a seat cushion airbag body 7 located on the lower layer, the seat cushion airbag skin 6 serves as a part of the seat cushion, the seat cushion airbag skin 6 is provided with a cutout for easy tearing, the seat cushion airbag body 7 is accommodated inside the seat cushion airbag skin 6 when not inflated, and the seat cushion airbag body 7 can smoothly pop out by tearing the cutout when inflated; as shown in Figure 1 and Figure 2 , the back cushion airbag 3 is arranged on both sides of the back cushion, as shown in Figure 4 , the back cushion airbag 3 includes a back cushion airbag skin 11 located on the outer layer and a back cushion airbag body 12 located on the inner layer, the back cushion airbag skin 11 serves as a part of the back cushion, the back cushion airbag skin 11 is provided with a cutout for easy tearing, the back cushion airbag body 12 is accommodated inside the back cushion airbag skin 11 when not inflated, and the back cushion airbag body 12 can smoothly pop out by tearing the cutout when inflated; as shown in Figure 1 and Figure 2 , the safety belt airbag 4 can be installed around the neck as a safety belt, as shown in Figure 5 and Figure 6As shown, the seat belt air bag 4 includes an outer seat belt air bag skin 13 and an inner seat belt bag body 14, the seat belt air bag skin 13 is detachably mounted on the seat belt as part of the anti-crash seat 1, the seat belt air bag skin 13 is provided with a cut line for easy tearing, the seat belt bag body 14 is stored in the seat belt air bag skin 13 when not inflated, and the seat belt bag body 14 can smoothly pop out when inflated; the inflation and deflation device can inflate and deflate each air bag. In this system, each air bag is arranged at a key position, and the inflation and deflation device inflates the air bag when it is hit, which can protect the legs, sides of the upper body, head and neck of the passenger during impact, and does not affect the riding experience under normal flight conditions.

[0034] In this embodiment, preferably: the cushion air bag skin 6 is made of foam material, which is more comfortable, and the cushion bag body 7 is made of high-toughness composite material; the back cushion air bag skin 11 is made of foam material, which is more comfortable, and the back cushion bag body 12 is made of high-toughness composite material; the seat belt air bag skin 13 is made of PU coated fabric, which has high temperature resistance and tear resistance, and the seat belt bag body 14 is made of high-toughness composite material.

[0035] In this embodiment, preferably: as shown Figure 6 The cross section of the seat belt air bag skin 13 and the seat belt bag body 14 is C-shaped, leaving an inward deformation space, which can deform inward to a certain extent when in contact with the head and neck of the passenger after inflation, and the body feels more comfortable.

[0036] In this embodiment, preferably: as shown Figure 3 and Figure 4 The cushion bag body 7 and the back cushion bag body 12 are both a plurality of independent small bag bodies, and the seat belt bag body 14 is also a plurality of independent small bag bodies, so that even if part of the small bag bodies fail, the other small bag bodies can still function, and the plurality of independent small bag bodies can adapt to the body shape and position of different passengers, optimizing the impact absorption effect.

[0037] In this embodiment, preferably: as shown Figures 3 to 6 The lower side of the cushion air bag 2, the inner side of the back cushion air bag 3, and the inner side of the seat belt air bag 4 are attached with an energy-absorbing material layer 8, which can change the hardness and adjust the energy-absorbing performance with temperature changes; as shown Figure 7As shown, the system further comprises an energy-absorbing material layer temperature control module capable of monitoring and adjusting the temperature of the energy-absorbing material layer 8, which comprises an energy-absorbing material layer temperature controller and a temperature sensor 10 and an electric heating element 9 installed at each energy-absorbing material layer 8, each temperature sensor 10 and electric heating element 9 being electrically connected to the energy-absorbing material layer temperature controller, which controls the temperature of the energy-absorbing material layer through the electric heating element according to the feedback of the temperature sensor to achieve appropriate energy-absorbing performance when the fall occurs. The energy-absorbing material layer 8 belongs to the buffer layer, which assists each airbag to improve the overall energy-absorbing effect. If the impact force is large, the energy-absorbing material layer 8 becomes softer to absorb more energy. If it is a moderate impact, the energy-absorbing material layer is adjusted to moderate stiffness. This adjustment needs to be completed quickly, otherwise it cannot work. Therefore, this type of smart response material that changes the hardness with temperature change and has energy-absorbing function is adopted. This type of material includes shape memory polymer (SMP), thermal responsive hydrogel, phase change composite material (PCMs), liquid crystal elastomer (LCE), etc., which can quickly complete the stiffness adjustment.

[0038] In this embodiment, preferably: Figure 9 As shown, the inflation and deflation device comprises an inflation and deflation controller and an inflation and deflation mechanism corresponding to each airbag, the inflation and deflation mechanism comprising a gas cylinder, a control valve, a deflation valve and a gas path, the gas cylinder, the control valve, the gas path and the corresponding airbag being connected in sequence, the deflation valve being connected in parallel between the control valve and the gas path, and the control valve and the deflation valve being electrically connected to the inflation and deflation controller; when the fall occurs, the inflation and deflation controller controls the corresponding control valve to open to inflate the corresponding airbag and controls the inflation degree of the corresponding airbag by controlling the opening time, and when the fall is completed, the inflation and deflation controller controls the corresponding control valve to close and the corresponding deflation valve to open to deflate the inflated airbag quickly, and when the pressure in the airbag exceeds a safety value, the corresponding deflation valve automatically opens to release the pressure in the airbag. The inflation and deflation device not only can inflate and deflate quickly according to the instruction, but also can automatically release the pressure when the airbag is over-pressurized to avoid pressing the occupant or damaging the airbag.

[0039] Embodiment Two

[0040] This embodiment discloses a second kind of intelligent airbag energy-absorbing protection system, which adds an airbag temperature control module on the basis of the first embodiment, the airbag temperature control module is used for monitoring and adjusting the temperature of the gas filled in the airbag to maintain the internal temperature of the inflated airbag in an appropriate range (such as 20-50℃) to avoid burning the occupant. As shown, Figure 8 The airbag temperature control module comprises an airbag temperature controller and a temperature sensor and an electric cooling element installed at the inlet of each airbag, and the temperature sensor and the electric cooling element are electrically connected to the airbag temperature controller; the airbag temperature controller controls the internal temperature of the airbag to maintain in an appropriate range through the electric heating element and the electric cooling element according to the feedback of the temperature sensor.

[0041] The embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

Claims

1. An airbag energy-absorbing protection system, characterized in that: The crash-resistant seats mounted on helicopters include seat cushion airbags on both sides of the seat cushion, back cushion airbags on both sides of the back cushion, seatbelt airbags that can be installed as a seatbelt around the neck, and an inflation / deflation device for inflating and deflating each airbag. The seat cushion airbags consist of an upper airbag cover and a lower airbag body. The airbag cover is part of the seat cushion and has tear-proof slits. When deflated, the airbag body is contained within the airbag cover; when inflated, the airbag body tears through the slits and deploys smoothly. The back cushion airbags consist of an outer back cushion cover and an inner back cushion. The back cushion airbag consists of an outer skin that serves as part of the back cushion and has tear-proof slits. When deflated, the back cushion airbag is contained within the outer skin, and when inflated, it tears through the slits and deploys smoothly. The seatbelt airbag comprises an outer skin and an inner body. The outer skin serves as part of the seatbelt of the crash-resistant seat and is detachably mounted on the seatbelt. The outer skin has tear-proof slits along its length. When deflated, the seatbelt airbag is contained within the outer skin, and when inflated, it tears through the slits and deploys smoothly.

2. The airbag energy-absorbing protection system as described in claim 1, characterized in that: Energy-absorbing material layers are attached to the underside of the seat cushion airbag, the inner side of the back cushion airbag, and the inner side of the seat belt airbag. The energy-absorbing material layers can change their softness and hardness with temperature changes to adjust their energy absorption performance. The energy-absorbing material layers are regulated by an energy-absorbing material layer temperature control module, which includes an energy-absorbing material layer temperature controller and temperature sensors and electric heating elements installed at each energy-absorbing material layer. Each temperature sensor and electric heating element is electrically connected to the energy-absorbing material layer temperature controller.

3. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The system also includes an airbag temperature control module, which monitors and adjusts the temperature of the gas inflated into the airbag to maintain the internal temperature of the inflated airbag within a suitable range to avoid burning the occupant. The airbag temperature control module includes an airbag temperature controller and temperature sensors and electric cooling components installed at the inlet of each airbag. The temperature sensors and electric cooling components are electrically connected to the airbag temperature controller.

4. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The inflation / deflation device includes an inflation / deflation controller and an inflation / deflation mechanism corresponding to each airbag; the inflation / deflation mechanism includes a gas cylinder, a control valve, a deflation valve, and a gas line, with the gas cylinder, control valve, gas line, and corresponding airbag connected in sequence, and a deflation valve connected in between the control valve and the gas line; the control valve and the deflation valve are electrically connected to the inflation / deflation controller respectively.

5. The airbag energy-absorbing protection system as described in claim 1, characterized in that: Each air sac consists of multiple independent small sacs.

6. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The cross-section of the seatbelt airbag skin and the seatbelt bladder body is C-shaped.

7. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The seat cushion airbag cover and back cushion airbag cover are made of foam material.

8. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The seatbelt airbag cover is made of PU-coated fabric.

9. The airbag energy-absorbing protection system as described in claim 1, characterized in that: The seat cushion, backrest, and seatbelt bladder are made of high-toughness composite materials.

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