A head and neck protection device for an aircraft ejection seat

Abstract

The present invention provides a head and neck protection device for an aircraft ejection seat, belonging to the field of flight protection. It includes a protective helmet, a connecting rope is fixedly connected to the top end of the protective helmet, an arc-shaped fixing block is fixedly connected to the outer surface of the protective helmet, a T-shaped plate is arranged at the lower end of the arc-shaped fixing block, connecting blocks are symmetrically and slidably connected to the front end of the T-shaped plate, protective plates are fixedly connected to the front ends of the two connecting blocks, and a first adjusting component for adjusting the height of the protective plates is arranged on the arc-shaped fixing block; in this application, a rotating component drives a threaded rod to rotate, under the action of the thread of the threaded rod, the threaded rod drives the T-shaped plate to slide in the first L-shaped plate along the length direction of the limiting rod, the T-shaped plate drives the connecting blocks and the protective plates to slide, and the protective plates are adjusted to a height suitable for the necks of pilots, facilitating adaptation to the neck heights of different pilots, improving the fitting of the protective plates with the necks of pilots and the comfort of pilots during flight.

Description

Technical Field

[0001] The present invention relates to the field of flight protection, and more specifically, to a head and neck protection device for an aircraft ejection seat. Background Art

[0002] An aircraft ejection seat, also known as an aviation ejection seat or an ejection seat, is a life-saving device used by pilots in emergency situations. It is a seat-type life-saving device that relies on a power device under the seat to eject the pilot out of the cabin and deploy a parachute to make the pilot land safely. During the ejection process, the pilot will bear a huge overload impact and needs to reduce the impact on the head and neck during the ejection process through a head and neck protection device;

[0003] During the use of the existing head and neck protection device for an aircraft ejection seat, the neck of the patient is usually protected by a protection plate. Due to the different neck lengths of pilots, it is easy for the protection plate to be difficult to fit the needs of each pilot during use, and insufficient neck protection may also increase the risk of cervical spine injury for the pilot during the ejection process, thus reducing the comfort and safety of the device. Summary of the Invention

[0004] Aiming at the problem in the prior art that due to the different neck lengths of pilots, it is easy for the protection plate to be difficult to fit the needs of each pilot during use, and insufficient neck protection may also increase the risk of cervical spine injury for the pilot during the ejection process, the purpose of the present invention is to provide a head and neck protection device for an aircraft ejection seat.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A head and neck protection device for an aircraft ejection seat, including a protection helmet. A connecting rope is fixedly connected to the top end of the protection helmet. An arc-shaped fixing block is fixedly connected to the outer surface of the protection helmet. A T-shaped plate is arranged at the lower end of the arc-shaped fixing block. Connecting blocks are symmetrically and slidably connected to the front end of the T-shaped plate. Protection plates are fixedly connected to the front ends of the two connecting blocks. A first adjusting component for adjusting the height of the protection plate is arranged on the arc-shaped fixing block. A rotating component is arranged on the first adjusting component. A second adjusting component for adjusting the width of the protection plate is arranged on the T-shaped plate. A limiting component for limiting the second adjusting component is arranged on the T-shaped plate.

[0007] Optionally, the first adjustment component includes two first L-shaped plates, both of the two first L-shaped plates are symmetrically and fixedly connected to the arc-shaped fixed block on the left and right, the T-shaped plate is slidably connected to the inner sides of the two first L-shaped plates, the bottom ends of the two first L-shaped plates are fixedly connected to the same fixed plate, the T-shaped plate slidably penetrates through the fixed plate, a threaded rod is rotatably connected to one of the first L-shaped plates, the threaded rod rotatably penetrates through the fixed plate, the T-shaped plate is threadedly connected to the threaded rod, a limiting rod is fixedly connected between the other first L-shaped plate and the fixed plate, and the T-shaped plate is slidably connected to the limiting rod.

[0008] Optionally, the rotating component includes a U-shaped frame, the U-shaped frame is fixedly connected to the bottom end of the fixed plate, the bottom end of the threaded rod is rotatably connected to the inner bottom wall of the worm gear, a worm gear is fixedly connected to the outer surface of the threaded rod, a worm is rotatably connected to the inner wall of the U-shaped frame, the worm rotatably penetrates through the lower end of the U-shaped frame, the worm cooperates with the threaded rod, and a knob is fixedly connected to the bottom end of the worm.

[0009] Optionally, the second adjustment component includes a rotating rod, the rotating rod rotatably penetrates through the T-shaped plate, a rotating block is fixedly connected to one side of the rotating rod, a circular gear is fixedly connected to the other side of the rotating rod, first rack plates are fixedly connected to the mutually approaching sides of the two connecting blocks, and the first rack plates are meshed with the two circular gears.

[0010] Optionally, the limiting component includes a rectangular sleeve, the rectangular sleeve is fixedly connected to the rear end of the T-shaped plate, a sliding block is slidably connected to the inner wall of the rectangular sleeve, a handle is fixedly connected to the top end of the sliding block, the handle slidably penetrates through the upper end of the rectangular sleeve, a first spring is fixedly connected between the inner wall of the rectangular sleeve and the sliding block, a connecting plate is fixedly connected to one side of the sliding block, a plug pin is fixedly connected to the front end of the connecting plate, a circular plate is fixedly connected to the outer surface of the rotating rod, and a plurality of slots cooperating with the plug pin are formed in the circular plate.

[0011] Optionally, a cotton pad is arranged inside the protective plate, a wavy surface is arranged at one end of the cotton pad close to the neck, and a plurality of ventilation holes are formed in both the cotton pad and the protective plate.

[0012] Optionally, limiting plates are symmetrically and fixedly connected to the upper and lower ends of one end of the protective plate, a connecting rod is fixedly connected between the two limiting plates, an arc-shaped frame is rotatably connected to the outer surface of the connecting rod, four cylinders are fixedly connected to one end of the arc-shaped frame close to the protective plate, and a fixing component is arranged on the protective plate.

[0013] Optionally, the fixing component includes a second L-shaped plate fixedly connected to the bottom end of the protective plate. A connecting shaft is fixedly connected between the inner side of the second L-shaped plate and the protective plate. An arc-shaped plate is slidably connected to the outer surface of the connecting shaft. A second spring is fixedly connected between the inner side of the second L-shaped plate and the arc-shaped plate. The second spring is sleeved on the outer side of the connecting shaft. A plug rod is fixedly connected to the top end of the arc-shaped plate. A limiting groove matching with the plug rod is formed at the lower end of the protective plate.

[0014] Optionally, a connecting film is fixedly connected to the inner top wall of the protective helmet. A third L-shaped plate is fixedly connected to the inner wall of the protective helmet. A motor is arranged on one side of the third L-shaped plate. The output end of the motor is fixedly connected to a rotating shaft. A semi-gear is fixedly connected to the outer surface of the rotating shaft. A U-shaped plate is fixedly connected to the inner wall of the protective helmet. Both the U-shaped plate and the third L-shaped plate are located inside the connecting film. A second rack plate is slidably connected to the inner wall of the U-shaped plate. A rectangular rod is fixedly connected to the bottom end of the second rack plate. A spherical ball is fixedly connected to the bottom end of the rectangular rod.

[0015] Optionally, T-shaped sliders are fixedly connected to the rear ends of both connecting blocks. T-shaped sliding grooves matching with the T-shaped sliders are formed on the T-shaped plate.

[0016] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0017] In the above solution, by providing a threaded rod, when it is necessary to adjust the height of the protective plate, the threaded rod is driven to rotate by the rotating component. Under the action of the thread of the threaded rod, the threaded rod can drive the T-shaped plate to slide in the first L-shaped plate along the length direction of the limiting rod. The T-shaped plate drives the connecting block and the protective plate to slide, and adjusts the protective plate to a height suitable for the neck of the pilot, so as to adapt to the neck heights of different pilots, improve the fit between the protective plate and the neck of the pilot, and the comfort of the pilot during flight;

[0018] By providing a circular gear and a first rack plate, when it is necessary to adjust the distance between the two protective plates, turn the rotating block. The rotating block drives the rotating rod to rotate. The rotating rod drives the circular gear to rotate. The circular gear drives the two first rack plates to move. When the distance between the two protective plates is adjusted to a suitable position, the two protective plates are restricted by the restricting component, so as to adapt to the neck widths of different pilots, improve the fit between the protective plate and the neck of the pilot, and the comfort of the pilot during flight;

[0019] By providing a cotton pad and a wavy surface, when it is necessary to clean the sweat on the pilot's neck, the cotton pad can absorb the sweat on the pilot's neck, keep the pilot's neck dry, reduce the discomfort caused by sweat accumulation, and also enable the protective plate to fit better with the pilot's neck, enhance the protective effect, and reduce the risk of injury to the pilot during ejection. The air can freely circulate through the ventilation holes, reducing the stuffy feeling generated when the pilot wears the protective device for a long time;

[0020] By providing an electromagnet and a first magnet, when the device is in the ejection process, the pilot may be subjected to a large overload impact and faint. When it is necessary to keep the pilot awake, the motor is started. The output end of the motor drives the rotating shaft and the semi-gear to rotate simultaneously. The semi-gear drives the second rack plate to slide reciprocally on the U-shaped plate. The second rack plate drives the rectangular rod to move up and down reciprocally, so that the spherical ball is driven by the rectangular rod to knock on the pilot's head during the movement process, keeping the pilot awake. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a rear three-dimensional structural schematic diagram of the present invention;

[0024] Figure 3 is a structural schematic diagram of the connecting block and the protective plate of the present invention;

[0025] Figure 4 is a structural schematic diagram of the first adjustment component of the present invention;

[0026] Figure 5 is a structural schematic diagram of the second adjustment component of the present invention;

[0027] Figure 6 is a structural schematic diagram of the limiting component of the present invention;

[0028] Figure 7 is a structural schematic diagram of the cotton pad, the wavy surface and the ventilation holes of the present invention;

[0029] Figure 8 is a structural schematic diagram of the arc-shaped frame and the cylinder of the present invention;

[0030] Figure 9 is a structural schematic diagram of the fixing component of the present invention;

[0031] Figure 10Schematic diagram of the connection film structure of the present invention;

[0032] Figure 11 Schematic diagram of the semi-gear and the second rack plate structure of the present invention.

[0033] [Reference numerals]

[0034] 101, protective helmet; 102, connecting rope; 103, arc-shaped fixing block; 104, T-shaped plate; 105, connecting block; 106, protective plate; 201, first L-shaped plate; 202, fixing plate; 203, threaded rod; 204, limiting rod; 205, U-shaped frame; 206, worm gear; 207, worm; 208, knob; 209, rotating rod; 210, rotating block; 211, spur gear; 212, first rack plate; 213, rectangular sleeve; 214, sliding block; 215, handle; 216, first spring; 217, connecting plate; 218, bolt; 219, round plate; 220, slot; 221, cotton pad; 222, wavy surface; 223, ventilation hole; 224, limiting plate; 225, connecting rod; 226, arc-shaped frame; 227, cylinder; 228, second L-shaped plate; 229, connecting shaft; 230, arc-shaped plate; 231, second spring; 232, inserting rod; 233, connecting film; 234, third L-shaped plate; 235, motor; 236, rotating shaft; 237, semi-gear; 238, U-shaped plate; 241, second rack plate; 242, rectangular rod; 243, spherical ball; 239, T-shaped slider; 240, T-shaped chute.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0036] The following describes in detail a head and neck protection device for an aircraft ejection seat provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also adopt other alternative methods for some well-known technologies; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that in the specification, references to "one embodiment", "an embodiment", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Additionally, when a particular feature, structure, or characteristic is described in connection with an embodiment, implementing such feature, structure, or characteristic in connection with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0038] Generally, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, depending at least in part on the context, can alternatively allow for the existence of other factors that are not necessarily explicitly described.

[0039] It can be understood that the meanings of "on", "above", and "over" in the present invention should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0040] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the figures. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented, and the spatial relative descriptors used herein may be interpreted accordingly.

[0041] As Figures 1 to 11As shown in the figure, an embodiment of the present invention provides a head and neck protection device for an aircraft ejection seat, including a protective helmet 101. A connecting rope 102 is fixedly connected to the top end of the protective helmet 101. An arc-shaped fixing block 103 is fixedly connected to the outer surface of the protective helmet 101. A T-shaped plate 104 is arranged at the lower end of the arc-shaped fixing block 103. Connecting blocks 105 are symmetrically and slidably connected to the front end of the T-shaped plate 104. Protective plates 106 are fixedly connected to the front ends of the two connecting blocks 105. A first adjusting component for adjusting the height of the protective plate 106 is arranged on the arc-shaped fixing block 103. A rotating component is arranged on the first adjusting component. A second adjusting component for adjusting the width of the protective plate 106 is arranged on the T-shaped plate 104. A limiting component for limiting the second adjusting component is arranged on the T-shaped plate 104.

[0042] When it is necessary to protect the pilot's head and neck, first connect the connecting rope 102 on the protective helmet 101 to the aircraft ejection seat. Subsequently, drive the first component through the rotating component, so that the first component adjusts the height of the protective plate 106, and adjust the protective plate 106 to a height suitable for the pilot's neck, which is convenient for adapting to the neck heights of different pilots. By adjusting the second adjusting component, adjust the distance between the two protective plates 106. When the distance between the two protective plates 106 is adjusted to a suitable position, limit the two protective plates 106 through the limiting component, which is convenient for adapting to the neck widths of different pilots, improving the fitting of the protective plate 106 to the pilot's neck and the comfort of the pilot during flight.

[0043] As Figure 4 As shown in the figure, the first adjusting component includes two first L-shaped plates 201. The two first L-shaped plates 201 are both symmetrically and fixedly connected to the arc-shaped fixing block 103 in the left-right direction. The T-shaped plate 104 is slidably connected to the inner sides of the two first L-shaped plates 201. The same fixing plate 202 is fixedly connected to the bottom ends of the two first L-shaped plates 201. The T-shaped plate 104 slidably penetrates through the fixing plate 202. A threaded rod 203 is rotatably connected to one of the first L-shaped plates 201. The threaded rod 203 rotatably penetrates through the fixing plate 202. The T-shaped plate 104 is threadedly connected to the threaded rod 203. A limiting rod 204 is fixedly connected between the other first L-shaped plate 201 and the fixing plate 202. The T-shaped plate 104 is slidably connected to the limiting rod 204.

[0044] When it is necessary to adjust the height of the protection plate 106, the threaded rod 203 is driven to rotate by the rotating assembly. Under the action of the thread of the threaded rod 203, the threaded rod 203 can drive the T-shaped plate 104 to slide in the first L-shaped plate 201 along the length direction of the limiting rod 204. The T-shaped plate 104 drives the connecting block 105 and the protection plate 106 to slide, and adjusts the protection plate 106 to a height suitable for the pilot's neck, facilitating adaptation to the neck heights of different pilots, improving the fit between the protection plate 106 and the pilot's neck, and the comfort of the pilot during flight.

[0045] As Figure 4 As shown in the figure, the rotating assembly includes a U-shaped frame 205. The U-shaped frame 205 is fixedly connected to the bottom end of the fixed plate 202. The bottom end of the threaded rod 203 is rotatably connected to the inner bottom wall of the worm gear 206. The outer surface of the threaded rod 203 is fixedly connected with the worm gear 206. The inner wall of the U-shaped frame 205 is rotatably connected with a worm 207. The worm 207 rotates through the lower end of the U-shaped frame 205. The worm 207 cooperates with the threaded rod 203. The bottom end of the worm 207 is fixedly connected with a knob 208.

[0046] When it is necessary to rotate the threaded rod 203, turn the knob 208. The knob 208 drives the worm 207 to rotate. The worm 207 drives the worm gear 206 to rotate. The worm gear 206 drives the threaded rod 203 to rotate. The threaded rod 203 drives the T-shaped plate 104 to slide. The T-shaped plate 104 drives the connecting block 105 and the protection plate 106 to slide, so as to adjust the height of the protection plate 106. Moreover, the worm 207 and the worm gear 206 can lock the threaded rod 203 to prevent the threaded rod 203 from rotating randomly.

[0047] As Figure 5 As shown in the figure, the second adjustment assembly includes a rotating rod 209. The rotating rod 209 rotates through the T-shaped plate 104. One side of the rotating rod 209 is fixedly connected with a rotating block 210. The other side of the rotating rod 209 is fixedly connected with a circular gear 211. On one side of each of the two connecting blocks 105 close to each other, a first rack plate 212 is fixedly connected. The first rack plate 212 meshes with the two circular gears 211.

[0048] When it is necessary to adjust the distance between the two protective plates 106, turn the rotating block 210. The rotating block 210 drives the rotating rod 209 to rotate. The rotating rod 209 drives the circular gear 211 to rotate. The circular gear 211 drives the two first rack plates 212 to move. The two first rack plates 212 respectively drive the corresponding connecting blocks 105 and protective plates 106 to move. When the distance between the two protective plates 106 is adjusted to a proper position, the two protective plates 106 are restricted by the restricting component, which is convenient for adapting to the neck widths of different pilots and improving the fitting between the protective plate 106 and the pilot's neck and the comfort of the pilot during flight.

[0049] As Figure 6 shown, the restricting component includes a rectangular sleeve 213. The rectangular sleeve 213 is fixedly connected to the rear end of the T-shaped plate 104. A sliding block 214 is slidably connected to the inner wall of the rectangular sleeve 213. A handle 215 is fixedly connected to the top end of the sliding block 214. The handle 215 slidably penetrates through the upper end of the rectangular sleeve 213. A first spring 216 is fixedly connected between the inner wall of the rectangular sleeve 213 and the sliding block 214. A connecting plate 217 is fixedly connected to one side of the sliding block 214. A plug pin 218 is fixedly connected to the front end of the connecting plate 217. A circular plate 219 is fixedly connected to the outer surface of the rotating rod 209. A plurality of slots 220 which are matched with the plug pin 218 are formed in the circular plate 219.

[0050] When it is necessary to restrict the rotating rod 209, pull the handle 215. The handle 215 drives the sliding block 214 to slide in the rectangular sleeve 213. The first spring 216 is stretched. The sliding block 214 drives the connecting plate 217 to slide. The connecting plate 217 drives the plug pin 218 to leave the slot 220 on the circular plate 219. Subsequently, turn the rotating block 210. The rotating block 210 drives the rotating rod 209 and the circular plate 219 to rotate. The rotating rod 209 drives the circular gear 211 to rotate. The circular gear 211 drives the two first rack plates 212 to move. The two first rack plates 212 respectively drive the corresponding connecting blocks 105 and protective plates 106 to move. When the distance between the two protective plates 106 is adjusted to a proper position, release the handle 215. The first spring 216 rebounds. The sliding block 214 drives the connecting plate 217 and the plug pin 218, so that the plug pin 218 is inserted into the slot 220 on the circular plate 219 to restrict the rotating rod 209 and prevent the rotating rod 209 from rotating randomly.

[0051] As Figure 7 shown, a cotton pad 221 is arranged on the inner side of the protective plate 106. A wavy surface 222 is arranged at one end of the cotton pad 221 close to the neck. A plurality of ventilation holes 223 are formed in both the cotton pad 221 and the protective plate 106.

[0052] By providing a cotton pad 221 and a wavy surface 222, it is convenient for the cotton pad 221 to absorb the sweat on the pilot's neck, keep the pilot's neck dry, reduce the discomfort caused by sweat accumulation, and can also make the protective plate 106 fit better with the pilot's neck, enhance the protective effect, and reduce the risk of injury to the pilot during the ejection process. Through the ventilation holes 223, air can circulate freely, reducing the stuffy feeling generated when the pilot wears the protective device for a long time.

[0053] As Figure 8 shown, one end of the protective plate 106 is symmetrically and fixedly connected with limit plates 224 up and down. A connecting rod 225 is fixedly connected between the two limit plates 224. An arc-shaped frame 226 is rotatably connected to the outer surface of the connecting rod 225. Four cylinders 227 are fixedly connected to the end of the arc-shaped frame 226 close to the protective plate 106. A fixing component is arranged on the protective plate 106.

[0054] When the cotton pad 221 needs to be replaced, flip the arc-shaped frame 226. The arc-shaped frame 226 drives the cylinders 227 to leave the cotton pad 221, and take out the cotton pad 221 from the inside of the protective plate 106. Subsequently, put the cotton pad 221 to be replaced into the inside of the protective plate 106. Then, flip the arc-shaped frame 226. The arc-shaped frame 226 drives the cylinders 227 to press the four corners of the cotton pad 221. Subsequently, fix the arc-shaped frame 226 through the fixing component, which is convenient for replacing the cotton pad 221.

[0055] As Figure 9 shown, the fixing component includes a second L-shaped plate 228. The second L-shaped plate 228 is fixedly connected to the bottom end of the protective plate 106. A connecting shaft 229 is fixedly connected between the inner side of the second L-shaped plate 228 and the protective plate 106. An arc-shaped plate 230 is slidably connected to the outer surface of the connecting shaft 229. A second spring 231 is fixedly connected between the inner side of the second L-shaped plate 228 and the arc-shaped plate 230. The second spring 231 is sleeved on the outer side of the connecting shaft 229. A plug rod 232 is fixedly connected to the top end of the arc-shaped plate 230. A limiting groove matched with the plug rod 232 is opened at the lower end of the protective plate 106.

[0056] When it is necessary to limit the arc-shaped frame 226, pull the arc-shaped plate 230, the second spring 231 is compressed, the arc-shaped plate 230 drives the insertion rod 232 to leave the limiting groove on the protective plate 106. Subsequently, turn over the arc-shaped frame 226, and the arc-shaped frame 226 drives the cylinder 227 to leave the cotton pad 221. Take out the cotton pad 221 from the inner side of the protective plate 106. Then, put the cotton pad 221 to be replaced into the inner side of the protective plate 106. Then, turn over the arc-shaped frame 226, and the arc-shaped frame 226 drives the cylinder 227 to press the four corners of the cotton pad 221. Release the arc-shaped plate 230, the second spring 231 rebounds, and the arc-shaped plate 230 drives the insertion rod 232 to insert into the limiting groove on the protective plate 106 to limit the arc-shaped frame 226.

[0057] As Figure 10 and Figure 11 shown, a connecting film 233 is fixedly connected to the inner top wall of the protective helmet 101, a third L-shaped plate 234 is fixedly connected to the inner wall of the protective helmet 101, a motor 235 is arranged on one side of the third L-shaped plate 234, the output end of the motor 235 is fixedly connected to a rotating shaft 236, an outer surface of the rotating shaft 236 is fixedly connected to a half gear 237, a U-shaped plate 238 is fixedly connected to the inner wall of the protective helmet 101, and both the U-shaped plate 238 and the third L-shaped plate 234 are located in the connecting film 233. A second rack plate 241 is slidably connected to the inner wall of the U-shaped plate 238, a rectangular rod 242 is fixedly connected to a bottom end of the second rack plate 241, and a spherical ball 243 is fixedly connected to a bottom end of the rectangular rod 242.

[0058] When the device is in the ejection process, the pilot may be fainted due to a large overload impact. When it is necessary to keep the pilot awake, start the motor 235. The output end of the motor 235 drives the rotating shaft 236 to rotate, the rotating shaft 236 drives the half gear 237 to rotate, the half gear 237 drives the second rack plate 241 to reciprocally slide on the U-shaped plate 238, the second rack plate 241 drives the rectangular rod 242 to reciprocally move up and down, so that the rectangular rod 242 drives the spherical ball 243 to knock on the pilot's head during the movement process to keep the pilot awake.

[0059] As Figure 3 and Figure 5 shown, T-shaped sliders 239 are fixedly connected to the rear ends of the two connecting blocks 105, and T-shaped sliding grooves 240 which are matched with the T-shaped sliders 239 are formed in the T-shaped plate 104.

[0060] By providing a T-shaped slider 239 and a T-shaped chute 240, when the connecting block 105 slides, it can drive the T-shaped slider 239 to slide within the T-shaped chute 240. The T-shaped chute 240 can guide and limit the T-shaped slider 239 and the connecting block 105, improving the stability of the connecting block 105 during its sliding on the T-shaped plate 104.

[0061] The working process of the technical solution provided by the present invention is as follows:

[0062] In use, connect the connecting rope 102 on the protective helmet 101 to the ejection seat of the aircraft. Subsequently, turn the knob 208, which drives the worm 207 to rotate. The worm 207 drives the worm gear 206 to rotate, and the worm gear 206 drives the threaded rod 203 to rotate. Under the action of the thread of the threaded rod 203, the threaded rod 203 can drive the T-shaped plate 104 to slide within the first L-shaped plate 201 along the length direction of the limiting rod 204. The T-shaped plate 104 drives the connecting block 105 and the protective plate 106 to slide, and adjusts the protective plate 106 to a height suitable for the pilot's neck.

[0063] Then, pull the handle 215, which drives the sliding block 214 to slide within the rectangular sleeve 213. The first spring 216 is stretched. The sliding block 214 drives the connecting plate 217 to slide, and the connecting plate 217 drives the bolt 218 to leave the slot 220 on the circular plate 219. Turn the rotating block 210, which drives the rotating rod 209 and the circular plate 219 to rotate. The rotating rod 209 drives the circular gear 211 to rotate, and the circular gear 211 drives the two first rack plates 212 to move. When the distance between the two protective plates 106 is adjusted to a suitable position, release the handle 215. The first spring 216 rebounds, and the sliding block 214 drives the connecting plate 217 and the bolt 218, so that the bolt 218 is inserted into the slot 220 on the circular plate 219 to limit the rotating rod 209, making the protective plate 106 fit the pilot's neck, improving the comfort of the pilot during flight. Through the cotton pad 221 inside the protective plate 106, the sweat on the pilot's neck is absorbed. The cotton pad 221 can also make the protective plate 106 fit better with the pilot's neck, enhancing the protection effect. Through multiple ventilation holes 223, air can circulate freely, reducing the stuffy feeling generated when the pilot wears the protection device for a long time.

[0064] When it is necessary to replace the cotton pad 221 or restrict the arc-shaped frame 226, pull the arc-shaped plate 230, and the second spring 231 is compressed. The arc-shaped plate 230 drives the insertion rod 232 to leave the limiting groove on the protection plate 106. Subsequently, turn over the arc-shaped frame 226, and the arc-shaped frame 226 drives the cylinder 227 to leave the cotton pad 221. Take out the cotton pad 221 from the inner side of the protection plate 106. Then, put the cotton pad 221 to be replaced into the inner side of the protection plate 106. Then, turn over the arc-shaped frame 226, and the arc-shaped frame 226 drives the cylinder 227 to press the four corners of the cotton pad 221. Subsequently, release the arc-shaped plate 230, and the second spring 231 rebounds. The arc-shaped plate 230 drives the insertion rod 232 to insert into the limiting groove on the protection plate 106 to restrict the arc-shaped frame 226. When the device is in the ejection process, the pilot may be subjected to a large overload shock and faint. When it is necessary to keep the pilot awake, start the motor 235. The output end of the motor 235 drives the rotating shaft 236 to rotate. The rotating shaft 236 drives the semi-gear 237 to rotate. The semi-gear 237 drives the second rack plate 241 to slide reciprocally on the U-shaped plate 238. The second rack plate 241 drives the rectangular rod 242 to move up and down reciprocally, so that the rectangular rod 242 drives the spherical ball 243 to knock on the pilot's head during the movement to keep the pilot awake.

[0065] The present invention covers any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. To enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0066] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A head and neck protection device for an aircraft ejection seat, comprising a protective helmet, characterized in that, A connecting rope is fixedly connected to the top end of the protective helmet. An arc-shaped fixing block is fixedly connected to the outer surface of the protective helmet. A T-shaped plate is arranged at the lower end of the arc-shaped fixing block. Connecting blocks are symmetrically and slidably connected to the front end of the T-shaped plate. Protective plates are fixedly connected to the front ends of the two connecting blocks. A first adjusting component for adjusting the height of the protective plate is arranged on the arc-shaped fixing block; A rotating component is arranged on the first adjusting component. A second adjusting component for adjusting the width of the protective plate is arranged on the T-shaped plate. A limiting component for limiting the second adjusting component is arranged on the T-shaped plate; The first adjusting component includes two first L-shaped plates. The two first L-shaped plates are fixedly connected to the arc-shaped fixing block symmetrically left and right. The T-shaped plate is slidably connected inside the two first L-shaped plates. The bottom ends of the two first L-shaped plates are fixedly connected to the same fixing plate. The T-shaped plate slidably penetrates through the fixing plate. A threaded rod is rotatably connected to one of the first L-shaped plates. The threaded rod rotatably penetrates through the fixing plate. The T-shaped plate is threadedly connected to the threaded rod. A limiting rod is fixedly connected between the other first L-shaped plate and the fixing plate. The T-shaped plate is slidably connected to the limiting rod; The rotating component includes a U-shaped frame. The U-shaped frame is fixedly connected to the bottom end of the fixing plate. The bottom end of the threaded rod is rotatably connected to the inner bottom wall of the worm gear. A worm gear is fixedly connected to the outer surface of the threaded rod. A worm is rotatably connected to the inner wall of the U-shaped frame. The worm rotatably penetrates through the lower end of the U-shaped frame. The worm and the threaded rod cooperate with each other. A knob is fixedly connected to the bottom end of the worm; A connecting film is fixedly connected to the inner top wall of the protective helmet. A third L-shaped plate is fixedly connected to the inner wall of the protective helmet. A motor is arranged on one side of the third L-shaped plate. The output end of the motor is fixedly connected to a rotating shaft. A semi-gear is fixedly connected to the outer surface of the rotating shaft. A U-shaped plate is fixedly connected to the inner wall of the protective helmet. The U-shaped plate and the third L-shaped plate are both located inside the connecting film. A second rack plate is slidably connected to the inner wall of the U-shaped plate. A rectangular rod is fixedly connected to the bottom end of the second rack plate. A spherical ball is fixedly connected to the bottom end of the rectangular rod.

2. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that, The second adjusting component includes a rotating rod. The rotating rod rotatably penetrates through the T-shaped plate. A rotating block is fixedly connected to one side of the rotating rod. A circular gear is fixedly connected to the other side of the rotating rod. First rack plates are fixedly connected to the mutually close sides of the two connecting blocks. The first rack plates are meshed with the two circular gears.

3. The head and neck protection device for an aircraft ejection seat according to claim 2, characterized in that, The limiting component includes a rectangular sleeve. The rectangular sleeve is fixedly connected to the rear end of the T-shaped plate. A sliding block is slidably connected to the inner wall of the rectangular sleeve. A handle is fixedly connected to the top end of the sliding block. The handle slidably penetrates through the upper end of the rectangular sleeve. A first spring is fixedly connected between the inner wall of the rectangular sleeve and the sliding block. A connecting plate is fixedly connected to one side of the sliding block. A plug pin is fixedly connected to the front end of the connecting plate. A circular plate is fixedly connected to the outer surface of the rotating rod. A plurality of slots cooperating with the plug pin are formed in the circular plate.

4. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that, A cotton pad is arranged on the inner side of the protective plate. One end of the cotton pad close to the neck is provided with a wavy surface, and a plurality of ventilation holes are formed in both the cotton pad and the protective plate.

5. The head and neck protection device for an aircraft ejection seat according to claim 4, characterized in that, One end of the protective plate is symmetrically and fixedly connected with limit plates up and down. A connecting rod is fixedly connected between the two limit plates. An arc-shaped frame is rotatably connected to the outer surface of the connecting rod. Four cylinders are fixedly connected to one end of the arc-shaped frame close to the protective plate. A fixing component is arranged on the protective plate.

6. The head and neck protection device for an aircraft ejection seat according to claim 5, characterized in that, The fixing component includes a second L-shaped plate which is fixedly connected to the bottom end of the protective plate. A connecting shaft is fixedly connected between the inner side of the second L-shaped plate and the protective plate. An arc-shaped plate is slidably connected to the outer surface of the connecting shaft. A second spring is fixedly connected between the inner side of the second L-shaped plate and the arc-shaped plate. The second spring is sleeved on the outer side of the connecting shaft. A plug rod is fixedly connected to the top end of the arc-shaped plate. A limiting groove which is matched with the plug rod is formed in the lower end of the protective plate.

7. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that, T-shaped sliders are fixedly connected to the rear ends of the two connecting blocks. T-shaped sliding grooves which are matched with the T-shaped sliders are formed in the T-shaped plate.

Images