Head and neck protection device for pilot ejection lifesaving and aircraft ejection seat

Abstract

The invention discloses a head and neck protection device for pilot ejection lifesaving and an aircraft ejection seat, and belongs to the technical field of pilot neck protection. The head and neck protection device comprises a conduction device and a gas cylinder triggering mechanism; the conducting device is respectively connected with the safety airbag and the gas cylinder; the gas cylinder triggering mechanism comprises a shell, an electromagnetic ejection mechanism, a firing pin, a sliding seat, an elastic device and a rotary locking block; the firing pin is installed at one end of the sliding seat and is coaxial with the gas cylinder, the elastic device is arranged at the other end of the sliding seat, the rotary locking block is rotatably installed in the shell, the electromagnetic ejection mechanism is hinged to one end of the rotary locking block, and when the elastic device is in a compressed state, the other end of the rotary locking block abuts against the positioning table; when the rotary locking block is separated from the positioning table, the firing pin opens the gas cylinder under the action of elastic force, so that compressed gas is injected into the safety airbag; the head and neck protection device can protect the head and the neck of a catapult in the emergency catapulting process, and the head and neck damage occurrence rate caused by emergency catapulting is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pilot neck protection, in particular to a head and neck protection device for pilot ejection and life-saving and an aircraft ejection seat. Background Art

[0002] Ejection rescue is a key measure to save the life of the pilot when an aircraft accident occurs. However, during the emergency ejection process, the pilot's head and neck are very vulnerable to injury, mainly because when a rapid ejection is performed in an emergency, the huge acceleration of up to 15G (Newton / kilogram) may cause the cervical spine to be subjected to excessive pressure and fracture, neck muscle tear and concurrent brain injury, which seriously threatens the pilot's life safety. Specifically, when the ejection is initiated, the pilot will be ejected out of the cockpit at a very fast speed by the ejection seat. At this time, the head and neck are subject to acceleration during this rapid ejection process, and the neck is excessively bent forward, which is very likely to cause cervical fractures and neck muscle tearing; after leaving the cabin, the pilot's head will be pushed by airflow in different directions, and will be violently swung backwards or to the sides, further aggravating the head and neck injury. For example, the U.S. patent application with publication number US 7878452: an aircraft ejection seat with a movable headrest uses a compression spring to provide power to push the side pillars and the headrest panel to expand and retract, thereby achieving fixed protection for the head. However, the device uses a mechanical structure, which is complex and has a large size and weight. In addition, during the flight phase, the side pillars will limit the pilot's head movement range, affecting flight driving operations.

[0003] Based on the above problems, it is urgent to design a head and neck protection device for pilot ejection and life-saving, which can effectively protect the pilot's head during the ejection process. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a head and neck protection device for pilot ejection and rescue and an aircraft ejection seat, which can effectively protect the pilot's neck during the ejection and rescue process to prevent the neck from being injured.

[0005] The present invention is achieved through the following technical solutions: In a first aspect, the present application provides a head and neck protection device for pilot ejection and life-saving, comprising a gas cylinder, a conduction device, a gas cylinder trigger mechanism, and a retractable safety airbag; The conduction device is provided with an air circuit, one end of which is connected to the airbag, and the other end is connected to a gas cylinder, and the gas cylinder is used to infuse compressed gas; The gas cylinder trigger mechanism comprises a housing, and an electromagnetic ejection mechanism, a striker, a slide seat, an elastic device and a rotating lock block arranged inside the housing; The housing is connected to the conduction device, the striker is mounted on one end of the slide and is coaxially arranged with the gas cylinder, the elastic device is arranged at the other end of the slide, and a positioning platform is arranged on the slide; The rotary lock block is rotatably installed in the shell, and the electromagnetic ejection mechanism is hinged to one end of the rotary lock block. When the elastic device is in a compressed state and the electromagnetic ejection mechanism is in a power-off state, the other end of the rotary lock block abuts against the positioning platform; when the electromagnetic ejection mechanism is energized, the rotary lock block rotates and separates from the positioning platform, and the striker passes through the conduction device under the action of the elastic force to open the gas cylinder, so that the compressed gas is injected into the airbag.

[0006] Preferably, the airbag is provided with an opening area, and restraint belts are provided on both sides of the opening area.

[0007] Preferably, a ceramic fiber mesh is bonded to the inner wall of the airbag, and the ceramic fiber mesh is used to constrain the shape of the airbag in an inflated state.

[0008] Preferably, the mouth of the gas cylinder is provided with a sealing membrane, and crack lines are provided on the sealing membrane.

[0009] Preferably, a pull rod is provided on the slide seat, and a slide groove is provided on the shell, the slide groove is provided along the sliding direction of the slide seat, one end of the pull rod is fixedly connected to the side wall of the slide seat, and the other end passes through the slide groove and extends to the outside of the shell.

[0010] Preferably, the conduction device is provided with a trigger tube, an air inlet tube and an air outlet tube; The trigger tube and the air outlet pipe are coaxially arranged, the trigger tube is connected to the shell and coaxially arranged with the striker, the air outlet pipe is sealed and connected to the bottle mouth of the gas cylinder, and the air inlet pipe is connected to the safety airbag through a pipeline.

[0011] Preferably, a sliding space is provided in the shell, a sliding seat is provided in the sliding space, one end of the elastic device is connected to the sliding seat, and the other end is connected to the inner wall of the shell, a through hole is provided on the shell, the firing pin passes through the through hole and extends into the trigger tube, and the firing pin is sealed and connected to the trigger tube.

[0012] Preferably, the electromagnetic ejection mechanism comprises an electromagnetic assembly, an electromagnetic pull rod and a spring; The electromagnetic assembly is fixed in the housing, the spring is sleeved on the electromagnetic pull rod, one end of the electromagnetic pull rod is slidably connected to the electromagnetic assembly, and the other end of the electromagnetic pull rod is hinged to the rotating lock block; When the electromagnetic assembly loses power, the rotating lock block abuts against the positioning platform. When the electromagnetic assembly is powered on, the rotating lock block rotates and separates from the positioning platform.

[0013] Preferably, the electromagnetic assembly includes an electromagnetic coil and an electromagnet; The electromagnetic coil is installed in the electromagnet, the electromagnetic pull rod is sleeved in the electromagnetic coil, a spring seat is arranged at the end of the electromagnet, one end of the spring is connected to the spring seat, and the other end is connected to the limit ring on the electromagnetic pull rod.

[0014] In a second aspect, the present application provides an aircraft ejection seat, comprising an ejection seat body and a head and neck protection device for a pilot ejection and life-saving.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present application provides a head and neck protection device for pilot ejection and life-saving. During the pilot's escape process, a gas cylinder trigger mechanism is stimulated, and a striker of the gas cylinder trigger mechanism passes through a conduction device to start the gas cylinder to deflate. The compressed gas in the gas cylinder is guided to the airbag through an air path to fill it, and a support structure is formed at the neck position, which effectively supports the pilot's neck and further protects the head and neck area. The head and neck protection device can protect the ejection personnel's head and neck during emergency ejection and reduce the incidence of head and neck injuries caused by emergency ejection.

[0016] Furthermore, a ceramic fiber mesh is provided in the airbag to constrain the inflation shape of the airbag, thereby preventing the instantaneous pressure formed during the inflation of the airbag from causing damage to the pilot's neck and improving the safety of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural diagram of the safety airbag of the present invention in a compressed state; Figure 2 It is a structural diagram of the airbag of the present invention in an inflated state; Figure 3 It is a structural diagram of the head and neck protection device of the present invention; Figure 4 It is a structural schematic diagram of the conducting device of the present invention; Figure 5 It is a schematic diagram of the internal structure of the electromagnetic ejection mechanism of the present invention; Figure 6 It is a structural schematic diagram of the gas cylinder trigger mechanism of the present invention in the compression device; Figure 7 It is the internal structure diagram of the electromagnetic component of the present invention; Figure 8It is a structural diagram of the airbag of the present invention.

[0019] In the figure: 1. airbag; 2. compression area; 3. neck hole; 4. buckle; 5. opening area; 6. exhaust valve; 7. air inlet; 8. gas cylinder; 9. conduction device; 10. gas cylinder trigger mechanism; 11. firing pin; 12. pull rod; 13. slide seat; 14. slide seat slot; 15. first spring; 16. rotating lock block; 17. ejection slot; 18. electromagnetic pull rod; 19. second spring; 20. electromagnetic assembly; 21. sealing block; 22. rotating shaft; 23. electromagnetic coil; 24. electromagnet; 25. spring seat; 26. positioning slot; 91. trigger tube; 92. air inlet pipe; 93. air outlet pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than 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.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] See also Figure 1-8 , a head and neck protection device for pilot ejection and life-saving, comprising a gas cylinder 8, a conduction device 9, a gas cylinder trigger mechanism 10 and a retractable safety airbag 1; The conducting device 9 is provided with a gas circuit, one end of which is connected to the airbag 1, and the other end is connected to the gas cylinder 8, and the gas cylinder 8 is used to infuse compressed gas; The gas cylinder trigger mechanism 10 comprises a housing, and an electromagnetic ejection mechanism, a striker 11, a slide seat 13, an elastic device and a rotating lock block 16 arranged inside the housing; The striker 11 is mounted on one end of a slide 13 and is coaxially arranged with the gas cylinder 8, and the elastic device is arranged on the other end of the slide 13, and a positioning platform is arranged on the slide 13; The rotating lock block 16 is rotatably installed in the shell, and the electromagnetic ejection mechanism is hinged to one end of the rotating lock block 16. When the elastic device is in a compressed state and the electromagnetic ejection mechanism is in a power-off state, the other end of the rotating lock block 16 abuts against the positioning platform; when the electromagnetic ejection mechanism is energized, the rotating lock block 16 rotates and separates from the positioning platform, and the striker 11 opens the gas cylinder 8 under the action of the elastic force, so that the compressed gas is injected into the airbag 1.

[0023] In some embodiments, the airbag 1 is an annular structure with a neck hole 3 formed in the middle. During use, the airbag 1 in a deflated state is placed on the pilot's neck through the neck hole 3, and the edge of the airbag 1 is placed on the pilot's shoulder and back neck. In this state, the airbag 1 will not affect the pilot's operating behavior. When in the life-saving state, the compressed gas in the gas cylinder 8 quickly fills the airbag 1, forming effective protection for the pilot's neck.

[0024] In some embodiments, in order to facilitate the wearing of the airbag 1, an opening area 5 is provided on the airbag 1. In the uninflated state, the airbag 1 is placed on the pilot's neck through the opening area 5, so that the airbag 1 can be more conveniently worn on the pilot's neck.

[0025] The airbag 1 of the above structure forms an opening area 5 in the middle, which improves the convenience of wearing the airbag 1, but the airbag 1 is easily separated from the neck during the inflation process. Therefore, restraint belts are respectively provided on both sides of the opening area 5 of the airbag 1, and buckles 4 are provided at the ends of the restraint belts. The restraint belts on both sides of the opening area 5 of the airbag 1 are connected by the buckles 4 to improve the stability of wearing the airbag 1 and avoid the problem of separation from the neck under pressure during the inflation process.

[0026] In some embodiments, the airbag 1 includes a top surface and a bottom surface, and a compression area 2 is between the top surface and the bottom surface. During the inflation process, the compression area 2 expands and deforms, and causes the inner wall of the airbag 1 to expand and deform toward the neck.

[0027] The airbag 1 is made of plastic material, and a ceramic fiber mesh is bonded to the inner wall of the airbag 1. During the inflation process, the shape of the airbag 1 in the inflated state is constrained by the ceramic fiber mesh, while preventing the airbag 1 from over-expanding and squeezing the neck.

[0028] In another embodiment, see Figure 8 A positioning groove 26 is provided at the lower end of the airbag 1, i.e., the side close to the shoulder. The positioning groove 26 is an arc-shaped groove. When the airbag is inflated, the positioning groove 26 overlaps the pilot's shoulder to position the inflation state of the airbag 1.

[0029] In some embodiments, the gas cylinder 8 is a high-pressure gas cylinder, and the pressure in the gas cylinder 8 needs to be determined according to the pressure-bearing capacity of the airbag 1 to avoid excessive inflation pressure causing the airbag 1 to rupture.

[0030] A sealing diaphragm is provided at the mouth of the gas cylinder 8, and the striker 11 pierces the sealing diaphragm to allow the compressed gas to enter the airbag 1 through the conduction device 9. The sealing diaphragm is made of a metal diaphragm, which has a certain strength to avoid rupture under high pressure to cause leakage of compressed gas, and crack lines are formed on the metal diaphragm, which are dents formed on the sealing diaphragm. When the striker 11 pierces the sealing diaphragm, the crack lines guide the rupture shape of the sealing diaphragm under the action of pressure, so that the compressed gas quickly enters the airbag 1.

[0031] The crack pattern is a cross pattern or a cross-shaped pattern, and the striker 11 faces the center of the crack pattern.

[0032] In some embodiments, see Figure 4 The conducting device 9 is a three-way pipe, on which a trigger tube 91, an air inlet tube 92 and an air outlet tube 93 are arranged and are interconnected, the trigger tube 91 and the air outlet tube 93 are coaxially arranged, the trigger tube 91 is connected to the shell of the gas cylinder trigger mechanism 10 and is coaxially arranged with the striker 11, the air outlet tube 93 is sealedly connected to the bottle mouth of the gas cylinder 8, and the air inlet tube 92 is sealedly connected to the air inlet hole 7 of the airbag 1 through a flexible pipeline.

[0033] In some embodiments, see Figure 5 The interior of the shell of the gas cylinder trigger mechanism 10 is a cavity structure. A partition is provided in the shell to divide the interior of the shell into two spaces, and the two spaces can be connected. The electromagnetic ejection mechanism and the slide 13 are respectively installed in the two spaces. The first space is the slide slot 14, and the slide 13 is arranged in the slide slot 14. The second space is the ejection slot 17, and the electromagnetic ejection mechanism is in the ejection slot 17.

[0034] The slide 13 is arranged in the first space of the shell and can slide along the first space. The elastic device at the end of the slide 13 is a first spring 15. One end of the first spring 15 is connected to the slide 13, and the other end of the first spring 15 abuts against the inside of the shell. A through hole is provided on the shell. The striker 11 is fixedly connected to the slide 13 and is coaxial with the through hole. Under the action of elastic force, the striker 11 passes through the through hole, the trigger tube 91 and the outlet pipe 93 in sequence to hit the mouth of the gas cylinder 8, so that the compressed gas enters the airbag 1 through the inlet pipe 92.

[0035] The slide seat 13 is detachably connected to the striker 11 so that the striker 11 can be replaced after being damaged, thereby reducing maintenance costs.

[0036] Furthermore, the firing pin 11 is slidably and sealingly connected to the trigger tube 91 to prevent the compressed gas of the gas cylinder 8 from entering the gas cylinder trigger mechanism 10 after being triggered.

[0037] A sealing block 21 is fixed on the striker 11 ; or a sealing block 21 is provided in the trigger tube 91 , and the striker 11 is sleeved in the sealing block 21 .

[0038] For example, the diameter of the sealing block 21 matches the diameter of the trigger tube 91, the sealing block 21 is fixed on the firing pin 11, and a sealing ring is sleeved on the surface of the sealing block 21; for another example, the sealing block 21 is fixed in the trigger tube 91, a sealing hole is provided at the center of the sealing block 21, the sealing block 21 is a rubber block, and the firing pin 11 passes through the sealing hole of the sealing block 21 to open the gas cylinder 8.

[0039] In some embodiments, see Figure 6 The rotating lock block 16 is located between the two spaces inside the shell. The rotating lock block 16 is rotatably connected to the shell through the rotating shaft 22. One end of the rotating lock block 16 is the positioning end and the other end is the driving end. In this embodiment, the positioning platform is the end surface of the slide 13 close to one end of the striker 11. The first spring 15 is in a compressed state, the positioning end of the rotating lock block 16 is pressed on the end surface of the slide 13, and the driving end of the rotating lock block 16 is connected to the electromagnetic ejection mechanism, and the electromagnetic ejection mechanism is in a power-off state.

[0040] The positioning end of the rotating locking block 16 is a pointed end structure, and the side close to the sliding seat 13 is a positioning surface.

[0041] In some embodiments, the electromagnetic ejection mechanism includes an electromagnetic component 20, an electromagnetic pull rod 18 and a second spring 19; the electromagnetic component 20 is fixed in the second space of the shell, and the second spring 19 is sleeved on the electromagnetic pull rod 18. One end of the electromagnetic pull rod 18 is slidingly connected to the electromagnetic component 20, and the other end of the electromagnetic pull rod 18 is hinged to the driving end of the rotating lock block 16; when the electromagnetic component 20 is energized to generate magnetic attraction, the electromagnetic pull rod 18 moves toward the direction of the electromagnetic component 20, thereby driving the rotating lock block 16 to rotate, so that the positioning end is separated from the positioning platform of the slide seat 13, and the striker 11 hits the bottle mouth of the gas cylinder 8.

[0042] See also Figure 7 The electromagnetic assembly 20 includes an electromagnetic coil 23 and an electromagnet 24. The electromagnetic coil 23 is installed in the electromagnet 24. The electromagnetic pull rod 18 is sleeved in the electromagnetic coil 23. A spring seat 25 is provided at the end of the electromagnet 24. One end of the second spring 19 is connected to the spring seat 25, and the other end is connected to the limit ring on the electromagnetic pull rod 18.

[0043] When the electromagnetic component 20 is in a power-off state, the electromagnetic pull rod 18, under the elastic force of the second spring 19, causes the positioning end of the rotating lock block 16 to be pressed against the end face of the slide seat 13; when the electromagnetic component 20 is in a power-on state, it generates magnetic force and overcomes the elastic force of the second spring 19, causing the electromagnetic pull rod 18 to move toward the electromagnetic component 20 under the action of the magnetic force, thereby causing the rotating lock block 16 to rotate; the striker 11, under the action of the elastic force, strikes the sealing diaphragm at the mouth of the gas cylinder 8, causing the compressed gas to leak quickly and fill the airbag 1.

[0044] In some embodiments, a controller and a battery are also provided in the shell. The controller is connected to the electromagnetic assembly 20. The battery supplies power to the electromagnetic assembly 20 and the controller. The controller is connected to a wireless receiver, which is used to receive the inflation signal of the airbag 1. Upon receiving the inflation signal, the controller energizes the electromagnet 24, thereby inflating the airbag 1.

[0045] The controller is connected to the aircraft's life-saving catapult through a wireless receiver. In an emergency, the pilot presses the ejection button to trigger the life-saving catapult to send an ejection signal. The controller receives the ejection signal through the wireless receiver and uses the ejection signal as an inflation signal. The controller energizes the electromagnetic component 20 to generate magnetic force.

[0046] See also Figure 2 The airbag 1 is also provided with an exhaust valve 6, which is a one-way exhaust valve. After the ejection rescue is successful, the pilot can open the one-way valve to release the gas in the airbag 1 and store the airbag 1.

[0047] In some embodiments, a pull rod 12 is provided on the slide 13, and a slide groove is provided on the shell. The slide groove is provided along the sliding direction of the slide 13. One end of the pull rod 12 is fixedly connected to the side wall of the slide 13, and the other end extends through the slide groove to the outside of the shell.

[0048] The pull rod 12 is used to reset the slide 13. When the gas cylinder trigger mechanism 10 is triggered, the first spring 15 is compressed again through the pull rod 12. At this time, the electromagnetic assembly 20 loses power. The electromagnetic pull rod 18 causes the positioning end of the rotating lock block 16 to rotate toward the end face of the slide 13 under the action of elastic force. When the positioning end is crimped with the end face of the slide, the striker 11 is completely reset. The gas cylinder 8 is replaced and the head and neck protection device can be used again.

[0049] The present application provides a head and neck protection device for pilot ejection and life-saving, which adopts a wireless receiver to receive the ejection signal of the life-saving ejection device of the aircraft, and uses the ejection signal as a trigger signal for starting the airbag 1. The controller receives the ejection signal and energizes the electromagnetic component 20. The magnetic force generated by the electromagnetic component 20 drives the rotating lock block 16 to separate from the slide seat 13 through the electromagnetic pull rod 18. The slide seat 13 instantly pierces the sealing membrane at the mouth of the gas cylinder 8 under the action of the elastic force, so that the compressed gas in the gas cylinder 8 enters the airbag 1 through the airway. The airbag 1 expands and deforms under the action of air pressure to form a protective device, and covers the pilot's neck area to protect the head and neck. The pilot's head and neck can be protected during the emergency ejection process, and the incidence of head and neck injuries caused by the emergency ejection can be reduced.

[0050] Example 1 An aircraft ejection seat comprises an ejection seat body and the above-mentioned head and neck protection device for pilot ejection and life-saving.

[0051] The controller of the head and neck protection device is wirelessly connected to the life-saving ejector of the ejection seat body.

[0052] Example 2 An aircraft, comprising the aircraft ejection seat described in Example 1.

[0053] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A head and neck protection device for pilot ejection and rescue, characterized in that: It comprises a gas cylinder (8), a conduction device (9), a gas cylinder triggering mechanism (10) and a retractable safety airbag (1); The conduction device (9) is provided with a gas circuit, one end of the gas circuit is connected to the safety airbag (1), and the other end is connected to a gas cylinder (8), and the gas cylinder (8) is used to infuse compressed gas; The gas cylinder trigger mechanism (10) comprises a housing, and an electromagnetic ejection mechanism, a striker (11), a sliding seat (13), an elastic device and a rotating lock block (16) arranged inside the housing; The housing is connected to the conduction device (9), the striker (11) is mounted on one end of the slide seat (13) and is coaxially arranged with the gas cylinder (8), the elastic device is arranged at the other end of the slide seat (13), and a positioning platform is arranged on the slide seat (13); The rotary lock block (16) is rotatably mounted in the housing, and the electromagnetic ejection mechanism is hinged to one end of the rotary lock block (16). When the elastic device is in a compressed state and the electromagnetic ejection mechanism is in a power-off state, the other end of the rotary lock block (16) abuts against the positioning platform. When the electromagnetic ejection mechanism is powered on, the rotary lock block (16) rotates and separates from the positioning platform, and the striker (11) passes through the conduction device (9) under the action of the elastic force to open the gas cylinder (8), so that the compressed gas is injected into the safety airbag (1).

2. A head and neck protection device for pilot ejection and rescue according to claim 1, characterized in that: The safety airbag (1) is provided with an opening area (5), and restraint belts are provided on both sides of the opening area (5).

3. A head and neck protection device for pilot ejection and rescue according to claim 1 or 2, characterized in that: The inner wall of the safety airbag (1) is bonded with a ceramic fiber mesh, and the ceramic fiber mesh is used to constrain the shape of the safety airbag (1) in an inflated state.

4. The head and neck protection device for pilot ejection and rescue according to claim 1, characterized in that: The mouth of the gas cylinder (8) is provided with a sealing membrane, and crack lines are provided on the sealing membrane.

5. The head and neck protection device for pilot ejection and rescue according to claim 1, characterized in that: A pull rod (12) is provided on the slide seat (13), and a slide groove is provided on the shell. The slide groove is provided along the sliding direction of the slide seat (13). One end of the pull rod (12) is fixedly connected to the side wall of the slide seat (13), and the other end passes through the slide groove and extends to the outside of the shell.

6. The head and neck protection device for pilot ejection and rescue according to claim 1, characterized in that: The conduction device (9) is provided with a trigger tube (91), an air inlet tube (92) and an air outlet tube (93); The trigger tube (91) and the air outlet tube (93) are coaxially arranged; the trigger tube (91) is connected to the housing and is coaxially arranged with the striker (11); the air outlet tube (93) is sealedly connected to the mouth of the gas cylinder (8); and the air inlet tube (92) is connected to the safety airbag (1) via a pipeline.

7. A head and neck protection device for pilot ejection and rescue according to claim 6, characterized in that: A sliding space is provided in the shell, a sliding seat (13) is provided in the sliding space, one end of the elastic device is connected to the sliding seat (13), and the other end is connected to the inner wall of the shell, a through hole is provided on the shell, a firing pin (11) passes through the through hole and extends into the trigger tube (91), and the firing pin (11) is sealedly connected to the trigger tube (91).

8. The head and neck protection device for pilot ejection and rescue according to claim 1, characterized in that: The electromagnetic ejection mechanism comprises an electromagnetic assembly (20), an electromagnetic pull rod (18) and a spring; The electromagnetic assembly (20) is fixed in the housing, the spring is sleeved on the electromagnetic pull rod (18), one end of the electromagnetic pull rod (18) is slidably connected to the electromagnetic assembly (20), and the other end of the electromagnetic pull rod (18) is hinged to the rotating lock block (16); When the electromagnetic assembly (20) loses power, the rotating lock block (16) abuts against the positioning platform; when the electromagnetic assembly (20) is powered on, the rotating lock block (16) rotates and separates from the positioning platform.

9. The head and neck protection device for pilot ejection and rescue according to claim 8, characterized in that: The electromagnetic assembly (20) comprises an electromagnetic coil (23) and an electromagnet (24); The electromagnetic coil (23) is installed in the electromagnet (24), the electromagnetic pull rod (18) is sleeved in the electromagnetic coil (23), a spring seat (25) is provided at the end of the electromagnet (24), one end of the spring is connected to the spring seat (25), and the other end is connected to the limit ring on the electromagnetic pull rod (18).

10. An aircraft ejection seat, characterized in that: The invention comprises an ejection seat body and a head and neck protection device for pilot ejection and life-saving as described in any one of claims 1 to 9.

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