Head and neck protection device for aircraft ejection seat

Abstract

The invention provides a head and neck protection device for an aircraft ejection seat, and belongs to the field of flight protection. Comprising 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, and protective plates are fixedly connected to the front ends of the two connecting blocks. The arc-shaped fixing block is provided with a first adjusting assembly used for adjusting the height of the protection plate. The rotating assembly drives the threaded rod to rotate, under the action of threads of the threaded rod, the threaded rod drives the T-shaped plate to slide in the first L-shaped plate in the length direction of the limiting rod, the T-shaped plate drives the connecting block and the protection plate to slide, the protection plate is adjusted to the height suitable for the neck of a pilot, and the protection device can adapt to the neck heights of different pilots conveniently; and the fitting of the protection plate and the neck of the pilot and the comfort of the pilot in the flight process are improved.

Description

Technical Field

[0001] The present invention relates to the field of flight protection, and more particularly 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 ejection seat, is a life-saving device used by pilots in emergency situations. It relies on a power device under the seat to eject the pilot out of the cabin and deploy a parachute to allow the pilot to land safely. During the ejection process, the pilot will be subjected to a huge overload impact, and a head and neck protection device is required to reduce the impact on the head and neck during the ejection process.

[0003] During use, the existing head and neck protection device for aircraft ejection seats usually protects the patient's neck through a protective plate. Due to the different neck lengths of pilots, it is easy for the protective plate to be difficult to fit the needs of each pilot during use. Inadequate neck protection may also increase the risk of cervical spine injury during the ejection process, thereby reducing the comfort and safety of the device. Summary of the invention

[0004] In view of the problems in the prior art that the different neck lengths of pilots make it difficult for the protective plate to fit the needs of each pilot during use, and that inadequate neck protection may increase the risk of cervical spine injury during ejection, 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 comprises a protective helmet, a connecting rope is fixedly connected to the top 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, a connecting block is symmetrically and slidably connected to the front end of the T-shaped plate, a protective plate is fixedly connected to the front end of 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, and a limiting component for limiting the second adjusting component is arranged on the T-shaped plate.

[0007] Optionally, the first adjustment assembly includes two first L-shaped plates, the two first L-shaped plates are fixedly connected to the arc-shaped fixed block symmetrically 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 slides through the fixed plate, one of the first L-shaped plates is rotatably connected to a threaded rod, the threaded rod is rotatably passed through the fixed plate, the T-shaped plate is threadedly connected to the threaded rod, and 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 assembly includes a U-shaped frame, which 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 wheel, the outer surface of the threaded rod is fixedly connected to the worm wheel, the inner wall of the U-shaped frame is rotatably connected to a worm, the worm rotatably passes through the lower end of the U-shaped frame, the worm and the threaded rod cooperate with each other, and the bottom end of the worm is fixedly connected to a knob.

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

[0010] Optionally, the limiting assembly includes a rectangular sleeve, which is fixedly connected to the rear end of the T-shaped plate, the inner wall of the rectangular sleeve is slidably connected to a sliding block, the top of the sliding block is fixedly connected to a handle, the handle slides 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, one side of the sliding block is fixedly connected to a connecting plate, the front end of the connecting plate is fixedly connected to a latch, the outer surface of the rotating rod is fixedly connected to a circular plate, and a plurality of slots that cooperate with the latch are provided on the circular plate.

[0011] Optionally, a cotton pad is provided on the inner side of the protective plate, a wavy surface is provided on one end of the cotton pad close to the neck, and a plurality of ventilation holes are provided on the cotton pad and the protective plate.

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

[0013] Optionally, the fixing assembly 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 plate, and a limiting groove that cooperates with the plug rod is opened at the lower end of the protective plate.

[0014] Optionally, the inner top wall of the protective helmet is fixedly connected to a connecting membrane, the inner wall of the protective helmet is fixedly connected to a third L-shaped plate, 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, the outer surface of the rotating shaft is fixedly connected to a half gear, the inner wall of the protective helmet is fixedly connected to a U-shaped plate, the U-shaped plate and the third L-shaped plate are both located in the connecting membrane, the inner wall of the U-shaped plate is slidably connected to a second rack plate, the bottom end of the second rack plate is fixedly connected to a rectangular rod, and the bottom end of the rectangular rod is fixedly connected to a sphere.

[0015] Optionally, the rear ends of the two connecting blocks are fixedly connected with T-shaped sliding blocks, and the T-shaped plate is provided with a T-shaped sliding groove that cooperates with the T-shaped sliding block.

[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 scheme, by providing a threaded rod, when the height of the protective plate needs to be adjusted, the threaded rod is driven to rotate by the rotating assembly. 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 limit rod. The T-shaped plate drives the connecting block and the protective plate to slide, and the protective plate is adjusted to a height suitable for the pilot's neck, which is convenient for adapting to the neck height of different pilots, improving the fit between the protective plate and the pilot's neck and the pilot's comfort during flight;

[0018] By providing the circular gear and the first rack plate, when the distance between the two protective plates needs to be adjusted, the rotary block is twisted, the rotary 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, the two first rack plates respectively drive the corresponding connecting blocks and protective 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 restriction component, so as to adapt to the neck width of different pilots, improve the fit between the protective plate and the pilot's neck and the comfort of the pilot during flight;

[0019] By providing the cotton pad and the wavy surface, when the sweat on the pilot's neck needs to be cleaned, the cotton pad can absorb the sweat on the pilot's neck, keeping the pilot's neck dry and reducing the discomfort caused by sweat accumulation. The protective plate can also fit the pilot's neck better, enhancing the protective effect and reducing the risk of injury to the pilot during ejection. The air can flow freely through the vents, reducing the stuffiness caused by the pilot wearing the protective device for a long time.

[0020] By providing the electromagnet and the first magnet, when the device is in the process of ejection, the pilot may be subjected to a large overload shock and faint. When the pilot needs to be kept awake, the motor is started, and the output end of the motor drives the rotating shaft and the half gear to rotate simultaneously. The half gear drives the second rack plate to slide back and forth on the U-shaped plate, and the second rack plate drives the rectangular rod to reciprocate up and down, so that the rectangular rod drives the ball to knock on the pilot's head during the movement, so that the pilot stays awake. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

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

[0023] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention;

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

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

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

[0027] Figure 6 It is a schematic diagram of the structure of the restriction component of the present invention;

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

[0029] Figure 8 It is a schematic diagram of the arc frame and cylindrical structure of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0031] Fig.10It is a schematic diagram of the connecting membrane structure of the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the half gear and the second rack plate of the present invention.

[0033] [Reference Signs]

[0034] 101, protective helmet; 102, connecting rope; 103, arc-shaped fixed 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, circular gear; 212, first rack plate; 213, rectangular sleeve; 214, sliding block; 215, handle; 216, first spring; 217, connecting plate; 218, latch; 219, Circular plate; 220, slot; 221, cotton pad; 222, wavy surface; 223, vent; 224, limit plate; 225, connecting rod; 226, arc frame; 227, cylinder; 228, second L-shaped plate; 229, connecting shaft; 230, arc plate; 231, second spring; 232, plug rod; 233, connecting membrane; 234, third L-shaped plate; 235, motor; 236, rotating shaft; 237, half gear; 238, U-shaped plate; 241, second rack plate; 242, rectangular rod; 243, ball; 239, T-shaped slider; 240, T-shaped slide groove.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The head and neck protection device for an aircraft ejection seat provided by the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained 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 may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] In general, a term can be understood, at least in part, from its 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 the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0040] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0041] like Figures 1 to 11As shown, 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 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 provided at the lower end of the arc-shaped fixing block 103, a connecting block 105 is symmetrically slidably connected to the front end of the T-shaped plate 104, and a protective plate 106 is fixedly connected to the front end of the two connecting blocks 105, a first adjusting component for adjusting the height of the protective plate 106 is provided on the arc-shaped fixing block 103, a rotating component is provided on the first adjusting component, a second adjusting component for adjusting the width of the protective plate 106 is provided on the T-shaped plate 104, and a limiting component for limiting the second adjusting component is provided on the T-shaped plate 104.

[0042] When it is necessary to protect the pilot's head and neck, first, the connecting rope 102 on the protective helmet 101 is connected to the aircraft ejection seat, and then the rotating component drives the first component to adjust the height of the protective plate 106. The protective plate 106 is adjusted to a height suitable for the pilot's neck to facilitate adaptation to the neck height of different pilots. The distance between the two protective plates 106 is adjusted by adjusting the second adjusting component. When the distance between the two protective plates 106 is adjusted to a suitable position, the two protective plates 106 are restricted by the limiting component to facilitate adaptation to the neck width of different pilots, thereby improving the fit between the protective plate 106 and the pilot's neck and the pilot's comfort during flight.

[0043] like Figure 4 As shown, the first adjustment component includes two first L-shaped plates 201, and the two first L-shaped plates 201 are fixedly connected to the arc-shaped fixed block 103 symmetrically on the left and right. The T-shaped plate 104 is slidably connected to the inner side of the two first L-shaped plates 201, and the bottom ends of the two first L-shaped plates 201 are fixedly connected to the same fixed plate 202, and the T-shaped plate 104 slides through the fixed plate 202. One of the first L-shaped plates 201 is rotatably connected with a threaded rod 203, and the threaded rod 203 rotatably penetrates the fixed plate 202, and the T-shaped plate 104 is threadedly connected to the threaded rod 203, and a limiting rod 204 is fixedly connected between the other first L-shaped plate 201 and the fixed plate 202, and the T-shaped plate 104 is slidably connected to the limiting rod 204.

[0044] When the height of the protective plate 106 needs to be adjusted, 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 protective plate 106 to slide, and the protective plate 106 is adjusted to a height suitable for the pilot's neck, so as to adapt to the neck height of different pilots, improve the fit between the protective plate 106 and the pilot's neck and improve the pilot's comfort during flight.

[0045] like Figure 4 As shown, 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 to the worm gear 206, the inner wall of the U-shaped frame 205 is rotatably connected to a worm 207, the worm 207 rotatably passes through the lower end of the U-shaped frame 205, the worm 207 cooperates with the threaded rod 203, and the bottom end of the worm 207 is fixedly connected to a knob 208.

[0046] When the threaded rod 203 needs to be rotated, the knob 208 is turned, and the knob 208 drives the worm 207 to rotate, the worm 207 drives the worm wheel 206 to rotate, the worm wheel 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 protective plate 106 to slide, and the height of the protective plate 106 is adjusted. The worm 207 and the worm wheel 206 can lock the threaded rod 203 to prevent the threaded rod 203 from rotating at will.

[0047] like Figure 5 As shown, the second adjustment component includes a rotating rod 209, which rotates and passes through the T-shaped plate 104. A rotating block 210 is fixedly connected to one side of the rotating rod 209, and a circular gear 211 is fixedly connected to the other side of the rotating rod 209. The sides of the two connecting blocks 105 close to each other are fixedly connected to the first rack plate 212, and the first rack plate 212 is meshed with the two circular gears 211.

[0048] When the distance between the two protective plates 106 needs to be adjusted, the rotary block 210 is turned, the rotary 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, and 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 suitable position, the two protective plates 106 are restricted by the restriction component, so as to adapt to the neck width of different pilots, improve the fit between the protective plates 106 and the pilot's neck and improve the comfort of the pilot during flight.

[0049] like Figure 6 As shown, the limiting component includes a rectangular sleeve 213, which is fixedly connected to the rear end of the T-shaped plate 104, and the inner wall of the rectangular sleeve 213 is slidably connected to a sliding block 214, and the top of the sliding block 214 is fixedly connected to a handle 215, and the handle 215 slides through the upper end of the rectangular sleeve 213, and a first spring 216 is fixedly connected between the inner wall of the rectangular sleeve 213 and the sliding block 214, and a connecting plate 217 is fixedly connected to one side of the sliding block 214, and a latch 218 is fixedly connected to the front end of the connecting plate 217, and a circular plate 219 is fixedly connected to the outer surface of the rotating rod 209, and a plurality of slots 220 that cooperate with the latch 218 are opened on the circular plate 219.

[0050] When it is necessary to restrict the rotating rod 209, the handle 215 is pulled, and 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, and the connecting plate 217 drives the latch 218 to leave the slot 220 on the circular plate 219, then the rotating block 210 is twisted, 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, and the circular gear 211 is rotated. The two first rack plates 212 are driven to move, and 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 suitable position, the handle 215 is released, the first spring 216 rebounds, and the sliding block 214 drives the connecting plate 217 and the latch 218, so that the latch 218 is inserted into the slot 220 on the circular plate 219, so as to restrict the rotating rod 209 and prevent the rotating rod 209 from rotating at will.

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

[0052] By providing the cotton pad 221 and the wavy surface 222, the cotton pad 221 can 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 protection effect, and reduce the risk of the pilot being injured during the ejection process. The air vents 223 can allow air to circulate freely, reducing the stuffiness caused by the pilot wearing the protective device for a long time.

[0053] like Figure 8 As shown, one end of the protective plate 106 is symmetrically fixedly connected to a limit plate 224, a connecting rod 225 is fixedly connected between the two limit plates 224, the outer surface of the connecting rod 225 is rotatably connected to an arc frame 226, and one end of the arc frame 226 close to the protective plate 106 is fixedly connected to four cylinders 227, and a fixing component is arranged on the protective plate 106.

[0054] When the cotton pad 221 needs to be replaced, flip the arc frame 226, and the arc frame 226 drives the cylinder 227 to leave the cotton pad 221, and take the cotton pad 221 out from the inner side of the protective plate 106. Then, put the cotton pad 221 that needs to be replaced into the inner side of the protective plate 106, and then flip the arc frame 226, and the arc frame 226 drives the cylinder 227 to press the four corners of the cotton pad 221. Then, fix the arc frame 226 by the fixing assembly to facilitate the replacement of the cotton pad 221.

[0055] like Fig. 9 As shown, the fixing assembly includes a second L-shaped plate 228, which 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 plate 230, and a limiting groove that cooperates with the plug rod 232 is opened at the lower end of the protective plate 106.

[0056] When it is necessary to restrict the arc frame 226, pull the arc plate 230, compress the second spring 231, and the arc plate 230 drives the insertion rod 232 to leave the restriction groove on the protective plate 106. Then, flip the arc frame 226, and the arc frame 226 drives the cylinder 227 to leave the cotton pad 221, and take the cotton pad 221 out 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, and then, flip the arc frame 226, and the arc frame 226 drives the cylinder 227 to press the four corners of the cotton pad 221. Release the arc plate 230, the second spring 231 rebounds, and the arc plate 230 drives the insertion rod 232 to insert into the restriction groove on the protective plate 106 to restrict the arc frame 226.

[0057] like Fig.10 and Fig.11 As shown, the inner top wall of the protective helmet 101 is fixedly connected with a connecting membrane 233, the inner wall of the protective helmet 101 is fixedly connected with a third L-shaped plate 234, 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 with a rotating shaft 236, the outer surface of the rotating shaft 236 is fixedly connected with a half gear 237, the inner wall of the protective helmet 101 is fixedly connected with a U-shaped plate 238, the U-shaped plate 238 and the third L-shaped plate 234 are both located in the connecting membrane 233, the inner wall of the U-shaped plate 238 is slidably connected with a second rack plate 241, the bottom end of the second rack plate 241 is fixedly connected with a rectangular rod 242, and the bottom end of the rectangular rod 242 is fixedly connected with a ball 243.

[0058] When the device is in the process of ejection, the pilot may be subjected to a large overload shock and faint. When the pilot needs to be kept awake, the motor 235 is started, and the output end of the motor 235 drives the rotating shaft 236 to rotate, and the rotating shaft 236 drives the half gear 237 to rotate. The half gear 237 drives the second rack plate 241 to slide back and forth on the U-shaped plate 238, and the second rack plate 241 drives the rectangular rod 242 to reciprocate up and down, so that the rectangular rod 242 drives the ball 243 to knock on the pilot's head during the movement, so that the pilot stays awake.

[0059] like Figure 3 and Figure 5 As shown, the rear ends of the two connection blocks 105 are fixedly connected with T-shaped sliders 239 , and the T-shaped plate 104 is provided with a T-shaped slot 240 that cooperates with the T-shaped sliders 239 .

[0060] By providing a T-shaped slider 239 and a T-shaped slot 240, when the connecting block 105 is sliding, the T-shaped slider 239 can be driven to slide in the T-shaped slot 240. The T-shaped slot 240 can guide and limit the T-shaped slider 239 and the connecting block 105, thereby improving the stability of the connecting block 105 during the sliding process on the T-shaped plate 104.

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

[0062] When in use, the connecting rope 102 on the protective helmet 101 is connected to the ejection seat of the aircraft, and then the knob 208 is turned, the knob 208 drives the worm 207 to rotate, the worm 207 drives the worm wheel 206 to rotate, and the worm wheel 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 in the first L-shaped plate 201 along the length direction of the limiting rod 204, and the T-shaped plate 104 drives the connecting block 105 and the protective plate 106 to slide, and the protective plate 106 is adjusted to a height suitable for the pilot's neck.

[0063] Then, the handle 215 is pulled, and 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, and the connecting plate 217 drives the latch 218 to leave the slot 220 on the circular plate 219, and the rotating block 210 is twisted, and the rotating block 210 drives the rotating rod 209 and the circular plate 219 to rotate, and 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, and the two Each first rack plate 212 drives the corresponding connection block 105 and protective plate 106 to move. When the distance between the two protective plates 106 is adjusted to a suitable position, the handle 215 is released, the first spring 216 rebounds, and the sliding block 214 drives the connection plate 217 and the latch 218, so that the latch 218 is inserted into the slot 220 on the circular plate 219, and the rotating rod 209 is restricted, so that the protective plate 106 fits the pilot's neck, improving the pilot's comfort during flight. The cotton pad 221 on the inner side of the protective plate 106 absorbs the sweat on the pilot's neck. The cotton pad 221 can also make the protective plate 106 fit better with the pilot's neck, enhancing the protective effect. The multiple vents 223 allow air to circulate freely, reducing the stuffiness caused by the pilot wearing the protective device for a long time.

[0064] When the cotton pad 221 needs to be replaced and the arc frame 226 needs to be restricted, the arc plate 230 is pulled, the second spring 231 is compressed, and the arc plate 230 drives the insertion rod 232 to leave the restriction groove on the protective plate 106. Then, the arc frame 226 is turned over, and the arc frame 226 drives the cylinder 227 to leave the cotton pad 221, and the cotton pad 221 is taken out from the inner side of the protective plate 106. Then, the cotton pad 221 to be replaced is placed inside the protective plate 106, and then, the arc frame 226 is turned over, and the arc frame 226 drives the cylinder 227 to make the cylinder 227 press the four corners of the cotton pad 221 tightly, and then, the arc plate 230 is released, and the second spring 2 31 rebounds, the arc plate 230 drives the insertion rod 232 to insert into the limiting groove on the protective plate 106 to limit the arc frame 226. When the device is in the process of ejection, the pilot may be subjected to a large overload impact and faint. When the pilot needs to stay awake, the motor 235 is started, and the output end of the motor 235 drives the rotating shaft 236 to rotate, and the rotating shaft 236 drives the half gear 237 to rotate. The half gear 237 drives the second rack plate 241 to slide back and forth on the U-shaped plate 238, and the second rack plate 241 drives the rectangular rod 242 to reciprocate up and down, so that the rectangular rod 242 drives the ball 243 to knock on the pilot's head during the movement, so that the pilot stays awake.

[0065] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A head and neck protection device for an aircraft ejection seat, comprising a protective helmet, characterized in that: The top of the protective helmet is fixedly connected with a connecting rope, the outer surface of the protective helmet is fixedly connected with an arc-shaped fixing block, the lower end of the arc-shaped fixing block is provided with a T-shaped plate, the front end of the T-shaped plate is symmetrically slidably connected with a connecting block, the front ends of the two connecting blocks are fixedly connected with a protective plate, and the arc-shaped fixing block is provided with a first adjustment component for adjusting the height of the protective plate; The first adjusting component is provided with a rotating component, the T-shaped plate is provided with a second adjusting component for adjusting the width of the protective plate, and the T-shaped plate is provided with a limiting component for limiting the second adjusting component.

2. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that: The first adjustment assembly includes two first L-shaped plates, which are both symmetrically fixedly connected to the arc-shaped fixed block, and 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, and the T-shaped plate slides through the fixed plate. One of the first L-shaped plates is rotatably connected to a threaded rod, and the threaded rod rotatably passes through the fixed plate. The T-shaped plate is threadedly connected to the threaded rod, and 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.

3. The head and neck protection device for an aircraft ejection seat according to claim 2, characterized in that: The rotating assembly includes a U-shaped frame, which 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 wheel, the outer surface of the threaded rod is fixedly connected to the worm wheel, the inner wall of the U-shaped frame is rotatably connected to a worm, the worm rotatably passes through the lower end of the U-shaped frame, the worm and the threaded rod cooperate with each other, and the bottom end of the worm is fixedly connected to a knob.

4. The head and neck protection device for an aircraft ejection seat according to claim 3, characterized in that: The second adjustment component includes a rotating rod, which rotates and passes through the T-shaped plate. A rotating block is fixedly connected to one side of the rotating rod, and a circular gear is fixedly connected to the other side of the rotating rod. The sides of the two connecting blocks close to each other are fixedly connected to the first rack plate, and the first rack plate is meshed with the two circular gears.

5. The head and neck protection device for an aircraft ejection seat according to claim 4, characterized in that: The limiting component includes a rectangular sleeve, which 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 of the sliding block, and the handle slides 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 latch is fixedly connected to the front end of the connecting plate, and a circular plate is fixedly connected to the outer surface of the rotating rod, and a plurality of slots that cooperate with the latch are provided on the circular plate.

6. 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, a wave surface is arranged on one end of the cotton pad close to the neck, and a plurality of ventilation holes are provided on the cotton pad and the protective plate.

7. The head and neck protection device for an aircraft ejection seat according to claim 6, characterized in that: One end of the protective plate is symmetrically fixedly connected to a limit plate, a connecting rod is fixedly connected between the two limit plates, an outer surface of the connecting rod is rotatably connected to an arc frame, four cylinders are fixedly connected to one end of the arc frame close to the protective plate, and a fixing component is arranged on the protective plate.

8. The head and neck protection device for an aircraft ejection seat according to claim 7, characterized in that: The fixing assembly 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 plate, and a limiting groove that cooperates with the plug rod is opened at the lower end of the protective plate.

9. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that: The inner top wall of the protective helmet is fixedly connected with a connecting membrane, the inner wall of the protective helmet is fixedly connected with a third L-shaped plate, a motor is arranged on one side of the third L-shaped plate, the output end of the motor is fixedly connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a half gear, the inner wall of the protective helmet is fixedly connected with a U-shaped plate, the U-shaped plate and the third L-shaped plate are both located in the connecting membrane, the inner wall of the U-shaped plate is slidably connected with a second rack plate, the bottom end of the second rack plate is fixedly connected with a rectangular rod, and the bottom end of the rectangular rod is fixedly connected with a sphere.

10. The head and neck protection device for an aircraft ejection seat according to claim 1, characterized in that: The rear ends of the two connecting blocks are fixedly connected with T-shaped sliding blocks, and the T-shaped plates are provided with T-shaped sliding grooves that cooperate with the T-shaped sliding blocks.

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