阅读说明：本技术 一种新型多功能轻量化抗坠毁座椅 (Novel multi-functional lightweight crash-resistant seat ) 是由 白林峰 杨林 颜亮 杨洋 孙岩磊 于 2021-09-23 设计创作，主要内容包括：本发明公开了一种新型多功能轻量化抗坠毁座椅,涉及直升机座椅技术领域；该座椅具备前后、高度、靠背角度调节功能,满足不同体型驾驶员乘坐和符合人机工程的需求,提升座椅乘坐和对飞机操控的舒适性,提升驾驶员的视野范围；配置负压式腰托,可实现突起高度调节,适应不同身高驾驶员乘坐时腰部支撑需求,降低乘坐疲劳感；配置新型头靠,为驾驶员提供头部支撑；配置五点式安全带,为驾驶员提供约束,安全带肩带具备手动和自动锁定功能,可满足不同的使用场景；座椅设置有吸能结构,满足抗坠毁生存率要求；相对于现役直升机驾驶员抗坠毁座椅,在新增功能的基础上,座椅采用了轻量化的设计,重量相比大大降低。(The invention discloses a novel multifunctional lightweight crash-resistant seat, and relates to the technical field of helicopter seats; the seat has the functions of adjusting the front and back, the height and the angle of the backrest, meets the requirements of different body types of drivers on riding and meeting the requirements of man-machine engineering, improves the comfort of the seat on riding and controlling the airplane, and improves the visual field range of the drivers; the negative pressure type waist support is configured, so that the protruding height can be adjusted, the waist support requirement of drivers with different heights can be met, and the riding fatigue is reduced; a novel headrest is configured to provide head support for a driver; the five-point safety belt is configured to provide restraint for a driver, and the safety belt shoulder belt has manual and automatic locking functions and can meet different use scenes; the seat is provided with an energy absorption structure, so that the requirement of crash-resistant survival rate is met; for the anti crash seat of active service helicopter driver, on the basis of newly-increased function, the seat has adopted lightweight design, and greatly reduced is compared to weight.)

1. A novel multifunctional lightweight crash-resistant seat is characterized by comprising a seat basin, a seat framework, a front-back adjusting mechanism, a height adjusting mechanism and a backrest adjusting mechanism, wherein the seat basin is fixed on the seat framework;

the chair legs are provided with C-shaped structural grooves, and are internally provided with upper guide sliding blocks and anti-crash components, wherein the upper guide sliding blocks are connected with rotating point fixing holes of the chair basin through bolts and can slide up and down along the C-shaped structural grooves;

the front-back adjusting mechanism, the height adjusting mechanism and the backrest adjusting mechanism are all arranged on the seat framework and used for adjusting the posture of the seat.

2. The novel multifunctional lightweight crash-resistant seat according to claim 1, wherein the crash-resistant assembly comprises a slider, a rivet, a locking plate, a self-lubricating piece and an energy-absorbing plate, wherein the self-lubricating piece is arranged on both sides of the slider, the energy-absorbing plate is arranged between the slider and the locking plate, one end of the energy-absorbing plate is fixedly connected with the locking plate through the rivet, and the other end of the energy-absorbing plate is fixed with the slider through an energy-absorbing plate connecting hole; the locking plate is provided with a height locking mechanism connecting hole, and the position of the crash-resistant assembly on the chair leg is limited by the locking hole on the locking plate; the locking plate is connected with the height adjusting mechanism on the chair leg through a connecting hole of the height locking mechanism; the locking plate penetrates through a sliding groove formed in the chair basin through a bolt to be connected with the chair basin.

3. The novel multifunctional lightweight crash-resistant seat according to claim 2, wherein the backrest angle adjusting mechanism comprises a connecting rod, a backrest adjusting handle assembly, a locking tooth, two sliding groove pieces and two fixing pieces, wherein two ends of the connecting rod sequentially penetrate through the sliding groove pieces and the fixing pieces, the sliding groove pieces are fixedly connected to the connecting rod, a plug is arranged at the left end of the connecting rod, and the backrest adjusting handle assembly is mounted at the right end of the connecting rod; the locking teeth are connected with the fixing pieces to obtain an assembled backrest angle adjusting mechanism; then the assembled backrest angle adjusting mechanism is placed in a sliding groove position of a chair basin, the fixed pieces at the two ends are connected with the chair basin, sliding blocks are respectively placed in sliding grooves of the sliding groove pieces at the two ends, and screws penetrate through the sliding groove in the chair basin to realize that the sliding blocks are connected with the connecting holes of the energy-absorbing structure.

4. The novel multifunctional lightweight crash-resistant seat as recited in claim 3, wherein said chute sheet and said backrest adjustment handle assembly are each fixed to a connecting rod by rivets; the locking teeth are connected with the fixing pieces through screws; the fixing sheet is connected with the chair basin through a rivet.

5. The novel multifunctional lightweight crash-resistant seat according to claim 2, wherein said height adjustment mechanism comprises a height adjustment handle, a height operating wire rope, a gas spring, two height locking mechanism connection holes, a pulley assembly I, a pulley assembly II, a wire rope and two height adjustment locking devices, said height adjustment handle being disposed at the bottom of said seat pan and connected to said seat pan; the height adjusting and locking devices are respectively and oppositely arranged on the chair legs through the connecting holes of the height locking mechanisms; the height operation steel wire rope is used for connecting the height adjusting handle and the height adjusting and locking device; one end of the steel wire rope is connected with the crash-resistant component of the left chair leg and then bypasses the pulley component I, passes through the pulley on the left side of the pulley component II and bypasses the guide post on the gas spring, then passes through the pulley on the right side of the pulley component II and finally is connected with the crash-resistant component on the right chair leg.

6. The novel multifunctional lightweight crash-resistant seat as claimed in claim 2, wherein the fore-and-aft adjusting mechanism comprises a fore-and-aft adjusting handle, a fore-and-aft operating wire rope and a fore-and-aft adjusting locking device, the fore-and-aft adjusting handle is connected with the seat pan by a screw; the front-back adjusting locking device is connected with the chair legs through screws; the front and back operation steel wire rope is used for connecting the front and back adjusting handle and the front and back adjusting locking device.

7. The novel multifunctional lightweight crash-resistant seat according to claim 2, wherein the seat frame further comprises a support plate, a pulling plate and a pulling plate connecting block, the support plate is arranged between the two legs, the pulling plate is arranged between the two legs in a crossed manner, and the upper and lower ends of the pulling plate are connected with the legs through the pulling plate connecting block respectively.

8. The novel multifunctional lightweight crash-resistant seat as recited in claim 2, wherein said legs are further provided with leg locks, including front and/or rear leg locks.

9. The novel multifunctional light-weight crash-resistant seat as claimed in claim 1, wherein a seat cushion is arranged on the seat basin, the seat cushion comprises a seat cushion and a back cushion, the seat cushion is of a double-layer foam structure, the lower layer is made of light closed-cell foam, and the upper layer is made of foam material with higher softness than the lower layer; the back cushion is made of a single foam material with high softness.

10. The novel multifunctional light-weight crash-resistant seat as claimed in claim 2, wherein the seat is further provided with a negative pressure type waist support, the negative pressure type waist support is arranged in a groove on the back of the back cushion of the seat cushion, and is fixed with the seat basin by a buckle belt; the adjusting switch of the negative pressure type waist support is fixed with the chair basin through the waist support adjusting button mounting hole.

Technical Field

The invention relates to the technical field of seat design, in particular to a novel multifunctional lightweight crash-resistant seat.

Background

In order to ensure the safety of a helicopter flying driver as much as possible, the helicopter is mostly provided with an anti-crash seat, but most of the existing anti-crash seats of the helicopter for the driver are not adjustable or only have a front-back adjusting function; some seats are only fixed on the waist and are not adjustable, so that the seat structure can not be adjusted for pilots with different body types, and the seats can not be suitable for different pilots to ride.

Disclosure of Invention

The invention aims to provide a novel multifunctional lightweight crash-resistant seat, so as to solve the problems in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a novel multifunctional lightweight crash-resistant seat comprises a seat basin, a seat framework, a front-back adjusting mechanism, a height adjusting mechanism and a backrest adjusting mechanism, wherein the seat basin is fixed on the seat framework, the seat framework comprises two L-shaped seat legs and a connecting rod assembly, the upper ends of the two seat legs are connected together through the connecting rod assembly, and the bottoms of the seat legs are fixed on a mounting guide rail through seat leg locks;

the chair legs are provided with C-shaped structural grooves, and are internally provided with upper guide sliding blocks and anti-crash components, wherein the upper guide sliding blocks are connected with rotating point fixing holes of the chair basin through bolts and can slide up and down along the C-shaped structural grooves;

the front-back adjusting mechanism, the height adjusting mechanism and the backrest adjusting mechanism are all arranged on the seat framework and used for adjusting the posture of the seat.

Preferably, the anti-crash assembly comprises a sliding block, a rivet, a locking plate, a self-lubricating slip sheet and an energy absorption plate, wherein the self-lubricating slip sheet is arranged on two sides of the sliding block, the energy absorption plate is positioned between the sliding block and the locking plate, one end of the energy absorption plate is fixedly connected with the locking plate through the rivet, and the other end of the energy absorption plate is fixed with the sliding block through an energy absorption plate connecting hole; the locking plate is provided with a height locking mechanism connecting hole, and the position of the crash-resistant assembly on the chair leg is limited by the locking hole on the locking plate; the locking plate is connected with the height adjusting mechanism on the chair leg through a connecting hole of the height locking mechanism; the locking plate penetrates through a sliding groove formed in the chair basin through a bolt to be connected with the chair basin.

Preferably, the backrest angle adjusting mechanism comprises a connecting rod, a backrest adjusting handle assembly, a locking tooth, two sliding groove pieces and two fixing pieces, wherein two ends of the connecting rod sequentially penetrate through the sliding groove pieces and the fixing pieces and are fixedly connected to the connecting rod, a plug is designed at the left end of the connecting rod, and the backrest adjusting handle assembly is installed at the right end of the connecting rod; the locking teeth are connected with the fixing pieces to obtain an assembled backrest angle adjusting mechanism; then the assembled backrest angle adjusting mechanism is placed in a sliding groove position of a chair basin, the fixed pieces at the two ends are connected with the chair basin, sliding blocks are respectively placed in sliding grooves of the sliding groove pieces at the two ends, and screws penetrate through the sliding groove in the chair basin to realize that the sliding blocks are connected with the connecting holes of the energy-absorbing structure.

Preferably, the chute sheet and the backrest adjusting handle assembly are fixed on the connecting rod through rivets; the locking teeth are connected with the fixing pieces through screws; the fixing sheet is connected with the chair basin through a rivet.

Preferably, the height adjusting mechanism comprises a height adjusting handle, a height operating steel wire rope, an air spring, two height locking mechanism connecting holes, a pulley assembly I, a pulley assembly II, a steel wire rope and two height adjusting locking devices, wherein the height adjusting handle is arranged at the bottom of the chair basin and connected with the chair basin; the height adjusting and locking devices are respectively and oppositely arranged on the chair legs through the connecting holes of the height locking mechanisms; the height operation steel wire rope is used for connecting the height adjusting handle and the height adjusting and locking device; one end of the steel wire rope is connected with the crash-resistant component of the left chair leg and then bypasses the pulley component I, passes through the pulley on the left side of the pulley component II and bypasses the guide post on the gas spring, then passes through the pulley on the right side of the pulley component II and finally is connected with the crash-resistant component on the right chair leg.

Preferably, the front-back adjusting mechanism comprises a front-back adjusting handle, a front-back operating steel wire rope and a front-back adjusting locking device, and the front-back adjusting handle is connected with the seat basin through a screw; the front-back adjusting locking device is connected with the chair legs through screws; the front and back operation steel wire rope is used for connecting the front and back adjusting handle and the front and back adjusting locking device.

Preferably, the seat framework further comprises a supporting plate, a pulling plate and a pulling plate connecting block, the supporting plate is arranged between the two chair legs, the pulling plate is arranged between the two chair legs in a crossed mode, and the upper end and the lower end of the pulling plate are connected with the chair legs through the pulling plate connecting block respectively.

Preferably, the chair legs are also provided with chair leg locks, including a front chair leg lock and/or a rear chair leg lock.

Preferably, the seat basin is provided with a seat cushion which comprises a seat cushion and a back cushion, wherein the seat cushion is of a double-layer foam structure, the lower layer is made of light closed-cell foam, and the upper layer is made of foam material with higher softness; the back cushion is made of a single foam material with high softness.

Preferably, the seat is further provided with a negative pressure type waist support, and the negative pressure type waist support is arranged in a groove on the back of the back cushion of the seat cushion and is fixed with the seat cushion by a buckle belt; the adjusting switch of the negative pressure type waist support is fixed with the chair basin through the waist support adjusting button mounting hole.

The invention has the beneficial effects that:

the invention provides a novel multifunctional lightweight crash-resistant seat which has the functions of adjusting the front and back, the height and the angle of a backrest, meets the requirements of different-size drivers on riding and meeting the man-machine engineering, improves the comfort of the seat on riding and controlling an airplane, and improves the visual field range of the driver; the negative pressure type waist support is configured, so that the protruding height can be adjusted, the waist support requirement of drivers with different heights can be met, and the riding fatigue is reduced; a novel headrest is configured to provide head support for a driver; the five-point safety belt is configured to provide restraint for a driver, and the safety belt shoulder belt has manual and automatic locking functions and can meet different use scenes; the seat is provided with an energy absorption structure, so that the requirement of crash-resistant survival rate is met; for the anti crash seat of active service helicopter driver, on the basis of newly-increased function, the seat has adopted lightweight design, and greatly reduced is compared to weight.

Drawings

Fig. 1 is a schematic structural view of a novel multifunctional lightweight crash-resistant seat provided in embodiment 1;

fig. 2 is a schematic view of a backrest angle adjusting structure in the novel multifunctional lightweight crash-resistant seat provided in embodiment 1;

fig. 3 is a schematic view of a height adjustment mechanism in the novel multifunctional lightweight crash-resistant seat provided in embodiment 1;

FIG. 4 is a schematic view of an energy absorber in the novel multifunctional lightweight crash-resistant seat provided in example 1;

FIG. 5 is a schematic structural view of a seat pan in the novel multifunctional lightweight crash-resistant seat provided in embodiment 1;

fig. 6 is a schematic view of a framework structure in the novel multifunctional lightweight crash-resistant seat provided in embodiment 1;

fig. 7 is a schematic structural view of a seat pan in the novel multifunctional lightweight crash-resistant seat provided in embodiment 1.

1 seat pan, 2 lumbar support adjusting button, 3 backrest angle adjusting mechanism, 4 guide rail, 5 safety belt, 6 negative pressure lumbar support, 7 front and back adjusting handle, 8 height adjusting handle, 9 headrest, 10 seat cushion, 11 safety belt shoulder belt locking handle, 12 sliding block, 13 connecting rod, 14 backrest adjusting handle component, 15 locking tooth, 16 rotation point, 17 fixing plate, 18 sliding groove plate, 19 gas spring, 20 locking pin hole, 21 sliding block, 22 height locking mechanism connecting hole, 23 pulley component, 24 steel wire rope, 25 rivet, 26 locking plate, 27 self-lubricating sliding sheet, 28 energy absorbing plate, 29 headrest connecting hole, 30 safety belt reel connecting hole, 31 rotation point fixing hole, 32 sliding groove, 33 safety belt shoulder belt outlet, 34 lumbar support adjusting button mounting hole, 35 safety belt mounting hole, 36 crotch connecting rod component, 37 connecting rod connecting block, 38 pulling plate, 39 upper guiding sliding block, 40 upper sliding block connecting piece, 41 front chair leg lock, 42 energy absorption structure connecting holes, 43 chair legs, 44 height adjusting locking devices, 45 pull plate connecting blocks, 46 front and back adjusting locking devices, 47 back chair leg lock and 48 support plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

The embodiment provides a novel multifunctional lightweight anti-crash seat, as shown in fig. 1, the novel multifunctional lightweight anti-crash seat comprises a seat basin, a seat framework, a front and back adjusting mechanism, a height adjusting mechanism and a backrest adjusting mechanism, wherein the seat basin is fixed on the seat framework, the seat framework comprises two L-shaped seat legs and a connecting rod assembly, the upper ends of the two seat legs are connected together through the connecting rod assembly, and the bottoms of the seat legs are fixed on a mounting guide rail through a seat leg lock;

the chair legs are provided with C-shaped structural grooves, and are internally provided with upper guide sliding blocks and anti-crash components, wherein the upper guide sliding blocks are connected with rotating point fixing holes of the chair basin through bolts and can slide up and down along the C-shaped structural grooves;

the front-back adjusting mechanism, the height adjusting mechanism and the backrest adjusting mechanism are all arranged on the seat framework and used for adjusting the posture of the seat.

The anti-crash assembly in the embodiment is as shown in fig. 4, and comprises a slider, a rivet, a locking plate, a self-lubricating slip sheet and an energy absorption plate, wherein the self-lubricating slip sheet is arranged on two sides of the slider, the energy absorption plate is located between the slider and the locking plate, one end of the energy absorption plate is fixedly connected with the locking plate through the rivet, and the other end of the energy absorption plate is fixed with the slider through an energy absorption plate connecting hole; the locking plate is provided with a height locking mechanism connecting hole, and the position of the crash-resistant assembly on the chair leg is limited by the locking hole on the locking plate; the locking plate is connected with the height adjusting mechanism on the chair leg through a connecting hole of the height locking mechanism; the locking plate penetrates through a sliding groove formed in the chair basin through a bolt to be connected with the chair basin.

The seat is provided with the backrest adjusting mechanism, the adjusting angle of the seat can be adjusted within a certain range, the riding comfort is improved, and the fatigue feeling of long-time riding is reduced; the backrest angle adjusting mechanism is shown in fig. 2 and comprises a connecting rod, a backrest adjusting handle assembly, a locking tooth, two sliding groove pieces and two fixing pieces, wherein two ends of the connecting rod sequentially penetrate through the sliding groove pieces and the fixing pieces, the sliding groove pieces are fixedly connected to the connecting rod, a plug is designed at the left end of the connecting rod, and the backrest adjusting handle assembly is installed at the right end of the connecting rod; the locking teeth are connected with the fixing pieces to obtain an assembled backrest angle adjusting mechanism; then the assembled backrest angle adjusting mechanism is placed in a sliding groove position of a chair basin, the fixed pieces at the two ends are connected with the chair basin, sliding blocks are respectively placed in sliding grooves of the sliding groove pieces at the two ends, and screws penetrate through the sliding groove in the chair basin to realize that the sliding blocks are connected with the connecting holes of the energy-absorbing structure.

In a more preferred embodiment, the chute sheet and the backrest adjusting handle assembly are fixed on the connecting rod through rivets; the locking teeth are connected with the fixing pieces through screws; the fixing sheet is connected with the chair basin through a rivet.

In order to meet the visual field range of drivers with different heights and the requirements for helicopter operation, the height adjusting mechanism in the embodiment is shown in fig. 3 and comprises a height adjusting handle, a height operating steel wire rope, an air spring, two height locking mechanism connecting holes, two pulley assemblies (a pulley assembly I and a pulley assembly II), a steel wire rope and two height adjusting locking devices, wherein the height adjusting handle is arranged at the bottom of the seat basin and is connected with the seat basin; the height adjusting and locking devices are respectively and oppositely arranged on the chair legs through the connecting holes of the height locking mechanisms; the height operation steel wire rope is used for connecting the height adjusting handle and the height adjusting and locking device; one end of the steel wire rope is connected with the crash-resistant component of the left chair leg and then bypasses the pulley component I, passes through the pulley on the left side of the pulley component II and bypasses the guide post on the gas spring, then passes through the pulley on the right side of the pulley component II and finally is connected with the crash-resistant component on the right chair leg.

In order to meet the requirements of a driver for entering and exiting and operating the helicopter, a front-back adjusting mechanism is arranged, the front-back adjusting mechanism comprises a front-back adjusting handle, a front-back operating steel wire rope and a front-back adjusting locking device, and the front-back adjusting handle is connected with a seat basin through a screw; the front-back adjusting locking device is connected with the chair legs through screws; the front and back operation steel wire rope is used for connecting the front and back adjusting handle and the front and back adjusting locking device.

In order to enhance the support of the seat, the seat frame in this embodiment further includes a supporting plate, a pulling plate and a pulling plate connecting block, the supporting plate is disposed between the two legs, the pulling plate is disposed between the two legs in a crossing manner, and the upper and lower ends of the pulling plate are connected to the legs through the pulling plate connecting block respectively.

In order to lock the seat, the chair legs are also provided with chair leg locks, including a front chair leg lock and/or a rear chair leg lock.

In order to ensure comfort, a seat cushion is arranged on the seat basin and comprises a seat cushion and a back cushion, the seat cushion is of a double-layer foam structure, the lower layer is made of light closed-cell foam, and the upper layer is made of foam material with higher softness; the back cushion is made of a single foam material with high softness. This measure does not reduce the comfort of the ride but reduces the weight considerably, more than 1/2 compared to the heavy seat cushions of the prior art type seats.

The seat is also provided with a negative pressure type waist support and a headrest, the negative pressure type waist support is arranged in a groove on the back of the back cushion of the seat cushion and is fixed with the seat cushion by a buckle belt; the adjusting switch of the negative pressure type waist support is fixed with the chair basin through the waist support adjusting button mounting hole. The headrest is connected with the seat basin through a headrest connecting hole.

The waist support provides ergonomic support for the waist of the driver, so that the riding comfort is further improved, and the fatigue of the driver in a long-time riding is greatly reduced. The waist support is simple in structure and only comprises an air bag, a plastic hose and an adjusting switch. The weight is also very light, only 1/4 which is the waist support weight of the conventional structural formula, and even lighter.

The seat in the embodiment is also provided with a safety belt, and the safety belt is connected with the seat basin through a safety belt reel connecting hole by a screw; the safety belt waistband is connected with the seat basin through a safety belt waistband connecting hole by a screw; the safety belt crotch strap is connected with the seat basin through the safety belt crotch strap mounting hole by a screw.

It should be noted that the seat basin in the invention is an optimized seat basin structure made of aramid fiber and carbon fiber in order to fully utilize the characteristics of light weight and high strength of composite materials. The chair basin is internally provided with high-strength carbon fibers, and the surface layer is provided with aramid fibers with better fatigue strength and toughness. The seat surface and the leaning part of the back of the passenger are supported by aramid fiber with the thickness of only 1 mm. The comfort of the seat can be improved after the seat is processed and formed. The whole chair basin adopts a frame structure design with variable cross sections, and frame structures with U-shaped flanges are designed on two sides, as shown in figures 5 and 7. The waist part with higher bearing requirement and the corner position of the backrest and the seat surface are thickened. At the same strength of the helicopter seat, the weight can be reduced by about 1/2 compared with the prior single carbon fiber material seat basin.

The seat is mainly supported by a structural framework, plays a key role in structural strength, seat rigidity and force transmission path, and is designed to be firm and sturdy; the chair legs on two sides are most stressed in the framework structure, a C-shaped groove structure from top to bottom is selected on the chair legs, and an upper guide sliding block and an anti-crash assembly are arranged in the C-shaped groove of the chair legs, so that the framework structure is simplified; the arrangement direction of the special-shaped section material is reasonably selected according to the bearing size of the seat in each direction; materials with high strength-density ratio are preferably selected during structural design; the framework is connected with the left chair leg and the right chair leg through the connecting rod assembly and the supporting plate, the structural stability is improved through the pulling plate, the upper end of the framework is relatively small in stress, the connecting rod assembly is made of a thin-wall aluminum pipe with a thick wall and a small diameter, the lower end of the framework needs to ensure the stability of the connection strength, and the supporting plate is made of aluminum alloy with a groove with an increased belt structure; the skeleton adopts succinct design, reasonable material to choose for use, reduces part quantity in a large number to reach the purpose of lightweight design.

By adopting the technical scheme disclosed by the invention, the following beneficial effects are obtained:

the invention provides a novel multifunctional lightweight crash-resistant seat which has the functions of adjusting the front and back, the height and the angle of a backrest, meets the requirements of different-size drivers on riding and meeting the man-machine engineering, improves the comfort of the seat on riding and controlling an airplane, and improves the visual field range of the driver; the negative pressure type waist support is configured, so that the protruding height can be adjusted, the waist support requirement of drivers with different heights can be met, and the riding fatigue is reduced; a novel headrest is configured to provide head support for a driver; the five-point safety belt is configured to provide restraint for a driver, and the safety belt shoulder belt has manual and automatic locking functions and can meet different use scenes; the seat is provided with an energy absorption structure, so that the requirement of crash-resistant survival rate is met; for the anti crash seat of active service helicopter driver, on the basis of newly-increased function, the seat has adopted lightweight design, and greatly reduced is compared to weight.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.