CN112009693A - Air-ride seat protection device - Google Patents

Air-ride seat protection device Download PDF

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Publication number
CN112009693A
CN112009693A CN202010943667.0A CN202010943667A CN112009693A CN 112009693 A CN112009693 A CN 112009693A CN 202010943667 A CN202010943667 A CN 202010943667A CN 112009693 A CN112009693 A CN 112009693A
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China
Prior art keywords
seat
base plate
backrest
protection device
guide
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CN202010943667.0A
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CN112009693B (en
Inventor
蔡永森
陈佳
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Zhejiang College of Security Technology
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0619Arrangements of seats, or adaptations or details specially adapted for aircraft seats with energy absorbing means specially adapted for mitigating impact loads for passenger seats, e.g. at a crash
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0691Arrangements of seats, or adaptations or details specially adapted for aircraft seats specially adapted for cabin crew

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Vibration Dampers (AREA)

Abstract

The invention relates to a passenger seat protection device, which comprises a seat with a backrest and a seat board, a base plate for connecting the seat with a bottom plate, a seat, a base arranged between the bottom of the seat and the base plate, and a safety mechanism arranged at the rear part of the backrest of the seat, wherein the safety mechanism comprises two vertical parallel guide rails arranged at the upper end of the base plate and arranged along the backrest of the seat, one ends of the two guide rails close to the base plate are connected through a supporting plate, a spiral spring is sleeved outside the guide rail at the upper end of the supporting plate, a sliding part matched with the guide rail is sleeved outside the guide rail at the upper end of the spiral spring, the sliding part is connected with the backrest of the seat, and a buffer assembly is arranged; the protective device provided by the invention has overload protection and directional movement limiting functions, can realize the directional and large-stroke active buffer movement of the seat when an airplane is crashed, and forms effective protection for a human body by combining energy absorption measures.

Description

Air-ride seat protection device
Technical Field
The invention belongs to the technical field of aircraft seat protection equipment, and particularly relates to a protection device for a seat for air passenger.
Background
The current pilot seat for a navigation aircraft adopts two independent systems for position adjustment and crash protection. Namely, the front-back and up-down position adjustment of the seat is realized by adopting a slide rail mechanism fixed on the floor; the energy absorbing part is added at the lower part of the seat to protect the human body when the airplane crashes.
Analysis proves that when an airplane crashes, the force value borne by the human spine can be controlled within the acceptable range of the human body only when the movement stroke of the human body reaches 300 mm, and the method has the defects that when the airplane crashes, a pilot seat is passively deformed, the movement stroke of the pilot seat is limited by the structural deformation of the airplane and is usually less than 200 mm, so that the impact force borne by the human body is large, the movement direction of the seat has great uncertainty, and the effective protection on the human spine cannot be realized.
In order to improve the protection performance of a pilot seat on a human body when a general airplane crashes and avoid the injury to the human body caused by crash as much as possible, the seat protection device for the navigation airplane is researched.
Disclosure of Invention
The invention aims to solve the problems in the background technology, and provides a passenger seat protection device which has overload protection and directional motion limiting functions, can realize the directional and large-stroke active buffer motion of a seat when an airplane crashes, and combines energy absorption measures to effectively protect a human body.
The purpose of the invention is realized as follows:
a protecting device for a seat for air passenger comprises a seat with a backrest and a seat board, a base plate for connecting the seat and a bottom plate, a seat, a base arranged between the bottom of the seat and the base plate, and a safety mechanism arranged at the rear part of the backrest of the seat, the safety mechanism comprises two vertical parallel guide rails which are arranged at the upper end of the base plate and along the height direction of the backrest, one ends of the two guide rails close to the base plate are connected through a support plate, a spiral spring is sleeved outside the guide rail at the upper end of the support plate, a sliding part matched with the guide rail is sleeved outside the guide rail at the upper end of the spiral spring and is connected with the backrest of the seat, establish the buffering subassembly between back rear end, two guide rails of seat, the buffering subassembly includes the urceolus of connecting the seat back, locates the inside honeycomb post of urceolus and locates in the urceolus, connect the piston rod of honeycomb post, the one end joint support board that the urceolus was kept away from to the piston rod.
Preferably, the base includes four bracing pieces, two bracing pieces for a set of and be X type structural arrangement, the center junction of the X type knot of two sets of bracing pieces is connected through rotatory connecting rod, the both ends of bracing piece all are connected the bottom of seat face and the upper surface of base plate respectively through the auto-lock slider.
Preferably, the two groups of support rods close to the bottom of the base and the two adjacent support rods are connected through fixing rods, and the two fixing rods are connected through an energy absorption rod I.
Preferably, two sides of the seat surface of the seat are hinged with second energy-absorbing rods through pin shafts, and one ends, far away from the pin shafts, of the second energy-absorbing rods are erected on the upper surface of the base plate.
Preferably, one end of the outer cylinder close to the seat back is connected with the rear end of the seat back through a connecting hinge, and one end of the piston rod far away from the outer cylinder is connected with the support plate through a cushion pad.
Preferably, the honeycomb column is made of aluminum alloy, and the honeycomb column is of a honeycomb structure.
Preferably, the spiral spring is arranged outside a guide rail between the supporting plate and the sliding part, the sliding part is connected with the guide rail through a sliding barrel in a sliding mode, two ends of the sliding part and two sides of the sliding barrel are connected with the rear end of a backrest of the chair through bolts, and 1-2 sliding parts are arranged on the guide rail.
Preferably, the outer cylinder is an energy absorption tube, the outer cylinder and the connecting hinge are reinforced through glass fibers, and the outer cylinder is made of aluminum alloy materials.
Preferably, the chemical composition of the aluminum alloy material is 7.92-10.54wt/%, 0.21-0.95wt/%, 0.12-0.55wt/%, 0.01-0.02wt/%, 0.002-0.004wt/%, 0.01-0.03wt/%, and 0.0005-0.001wt/%, of aluminum.
Preferably, in order to ensure the strength of the outer cylinder and realize the balance of light weight and light weight, the aluminum alloy material has the tensile strength S of 250-270MPa, the elongation of 6.9-8.2%, the elastic modulus E of 37-45Gpa, the Poisson ratio upsilon of 0.29-0.33, and the ratio (S + E) upsilon/(S-E) is more than 0.39 and less than or equal to 0.51.
Preferably, the modulus of elasticity E of the honeycomb column in a static stateeSatisfies the following conditions:
Ee=[2h/sinα(1-cosα)D)Es
wherein h, D and alpha respectively represent the cell wall thickness, the cell wall length and the cell wall included angle of the honeycomb structure unit cell, EsIs the elastic modulus of the aluminum alloy material forming the honeycomb column.
Preferably, when the honeycomb column is in a yield stage, the stress sigma satisfies:
σ=3/5kEs(h/D)2/3/[(1-υ1/2)sinα(1-cosα)],
wherein upsilon is the Poisson's ratio of the aluminum alloy materials forming the honeycomb column, k is the constraint coefficient of the bottom of the honeycomb column, and k is more than 5.65 and less than or equal to 5.74.
Compared with the prior art, the invention has the beneficial effects that:
1. when the falling impact on a human body reaches a critical allowable load, the component force of the force in the vertical direction on the X-shaped supporting rod in the horizontal direction is the starting load of the first energy absorption rod, the first energy absorption rod starts to move downwards along with the impact on the human body, the safety mechanism at the rear end of the seat backrest adopts a guide rail type structure, the installation space of the seat suspension is utilized to maximize the suspension stroke of the seat, the available stroke of the seat suspension under impact excitation is increased, under the impact excitation, under the condition that the safety mechanism does not completely absorb the impact energy, the second energy absorption rod rotates around a pin shaft, when the second energy absorption rod abuts against the lower surface of the plane of the seat, the second energy absorption rod collapses to absorb the residual energy, and therefore the damage of the impact on the spine of the human body is reduced to the greatest extent.
2. The invention provides a passenger seat protection device, wherein an outer cylinder is connected with the rear end of a backrest through a connecting hinge, a piston rod in the outer cylinder is connected with a support plate, a honeycomb column in the outer cylinder is composed of a pre-compressed honeycomb structure, in the protection process, the piston rod compresses the honeycomb column for buffering, and the honeycomb structure is collapsed to absorb the integral impact kinetic energy.
3. The invention provides a protecting device for a seat for air passenger, wherein a safety mechanism comprises a spiral spring supporting seat, a buffer assembly and an energy absorbing rod II, two guide rails are fixed on a base plate, a supporting plate surface and a spiral spring supporting seat plane are sleeved on the guide rails, the buffer assembly is fixed on the back of the seat, and a piston head is fixed on the supporting plane. The excitation acts on the base plate, the seat plane slides up and down along the slide rail, and the buffer assembly absorbs vibration energy.
4. According to the air-ride seat protection device, the aluminum alloy honeycomb column is arranged in the outer barrel of the buffer component, so that the protection performance of the seat on a human body during the falling collision of an airplane is improved, the damage to the human body caused by the falling collision can be avoided, the seat can absorb the energy transferred to the human body during the falling collision of the airplane to the maximum extent, the stress value of the spine of the human body is controlled within an acceptable range, and the protection effect is achieved.
Drawings
Fig. 1 is a schematic structural view of a protective device for a passenger seat of the invention.
Fig. 2 is a schematic view of a safety mechanism of a passenger seat protection device of the present invention.
Figure 3 is a schematic view of a passenger seat protector cushioning assembly of the present invention.
In the figure: 1. a seat; 2. a substrate; 3. a support bar; 4. rotating the connecting rod; 5. fixing the rod; 6. a first energy absorption rod; 7. a second energy absorption rod; 8. a pin shaft; 9. a guide rail; 10. a slider; 11. a coil spring; 12. a support plate; 13. a buffer assembly; 131. an outer cylinder; 132. connecting a hinge; 133. a honeycomb column; 134. a piston rod; 135. a cushion pad.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the passenger seat protection device comprises a seat 1 with a backrest and a seat board, and a base plate 2 connecting the seat 1 and a bottom plate, and comprises the seat 1, a base arranged between the bottom of the seat 1 and the base plate 2, and a safety mechanism arranged at the rear part of the backrest of the seat 1.
The base comprises four support rods 3, two support rods 3 are in a group and arranged in an X-shaped structure, the central joints of the X-shaped knots of the two groups of support rods 3 are connected through a rotating connecting rod 4, two ends of each support rod 3 are respectively connected with the bottom of the seat surface of the seat 1 and the upper surface of the base plate 2 through self-locking sliders, the two groups of support rods 3 close to the bottom of the base and the two adjacent support rods 3 are connected through fixing rods 5, the two fixing rods 5 are connected through energy-absorbing rods I6, when the falling impact on a human body reaches a critical allowable load, the component force of the force in the vertical direction on the X-shaped support rods 3 in the horizontal direction is the starting load of the energy-absorbing rods I6, the energy-absorbing rods I6 start to start, the seat 1 moves downwards, and when the seat 1 is impacted in the vertical direction, the person and the seat surface press the X-shaped base, the impact in the vertical direction is converted into the impact in the horizontal direction, the energy absorption rod I6 in the horizontal direction is pulled, and when the impact reaches the starting load, the energy absorption rod I6 starts to work and absorbs the impact energy to finish the protection of the human body.
Combine fig. 2, safety mechanism is including locating base plate 2 upper end, two vertical parallel guide 9 that set up along 1 back direction of height of seat, two guide 9 are close to and connect through backup pad 12 between the one end of base plate 2, coil spring 11 is established to the outside cover of guide 9 of backup pad 12 upper end, the slider 10 of establishing with guide 9 looks adaptation is established to the outside cover of guide 9 of coil spring 11 upper end, seat 1's back is connected to slider 10, establish buffering subassembly 13 between seat 1's the back rear end, two guide 9, coil spring 11 locates the guide 9 outside between backup pad 12 and slider 10, slider 10 is through slide cartridge sliding connection guide 9, the both ends of slider 10, the both sides bolted connection seat 1's of slide cartridge back rear end, 2 are established to slider 10 on the guide 9.
The safety mechanism is composed of a spiral spring supporting seat, a buffer component and an energy absorption rod, two guide rails are fixed on a base plate, a supporting plate surface and a spiral spring supporting seat plane are sleeved on the guide rails, the buffer component is fixed on a seat back, and a piston head is fixed on the supporting plane. The excitation acts on the base plate, the seat plane slides up and down along the slide rail, and the buffer assembly absorbs vibration energy.
Two sides of the seat surface of the seat 1 are hinged with a second energy-absorbing rod 7 through a pin shaft 8, one end, far away from the pin shaft 8, of the second energy-absorbing rod 7 is erected on the upper surface of the base plate 2, the second energy-absorbing rod 7 does not work under vibration excitation and freely rotates around the pin shaft 8, under impact excitation, under the condition that impact energy is not completely absorbed, the second energy-absorbing rod 7 rotates around the pin shaft 8, and when the second energy-absorbing rod 7 is abutted to the lower surface of the plane of the seat 1, the second energy-absorbing rod 7 is collapsed to absorb residual energy, so that damage of impact to the spine of a human body is reduced to the maximum.
Example 2
On the basis of the embodiment 1, referring to fig. 3, the buffer assembly 13 includes an outer cylinder 131 connected to the backrest of the seat 1, a honeycomb pillar 133 disposed inside the outer cylinder 131, and a piston rod 134 disposed inside the outer cylinder 131 and connected to the honeycomb pillar 133, wherein one end of the piston rod 134 away from the outer cylinder 131 is connected to the support plate 12, one end of the outer cylinder 131 close to the backrest of the seat 1 is connected to the rear end of the backrest through a connecting hinge 132, and one end of the piston rod 134 away from the outer cylinder 131 is connected to the support plate 12 through a buffer pad 135
The outer cylinder 131 is connected with the back end of the backrest through a connecting hinge 132, the piston rod 134 in the outer cylinder 131 is connected with the support plate 12, the honeycomb column 133 in the outer cylinder 131 is composed of a pre-compressed honeycomb structure, in the protection process, the piston rod 134 compresses the honeycomb column 133 for buffering, and the honeycomb structure in the honeycomb column is broken to absorb the integral impact kinetic energy
Example 3
According to the embodiment 2, the honeycomb column is made of aluminum alloy, the honeycomb column is of a honeycomb structure, the outer cylinder is an energy absorption tube, the outer cylinder and the connecting hinge are reinforced through glass fibers, and the outer cylinder is made of aluminum alloy.
The chemical composition of the aluminum alloy material is 7.92-10.54wt/%, 0.21-0.95wt/%, 0.12-0.55wt/%, 0.01-0.02wt/%, 0.002-0.004wt/%, 0.01-0.03wt/%, and 0.0005-0.001wt/%, of aluminum, zinc, silicon, copper, nickel, copper, aluminum, zinc, copper, nickel, zinc, copper, nickel, copper.
The aluminum alloy material has the tensile strength S of 250-270MPa, the elongation of 6.9-8.2%, the elastic modulus E of 37-45Gpa, the Poisson ratio upsilon of 0.29-0.33, and the ratio (S + E) upsilon/(S-E) of more than 0.39 and less than or equal to 0.51.
Modulus of elasticity E of the honeycomb column in a static stateeSatisfies the following conditions: ee=[2h/sinα(1-cosα)D)EsWherein h, D and alpha respectively represent the cell wall thickness, the cell wall length and the cell wall included angle of the honeycomb structure unit cell, EsIs the elastic modulus of the aluminum alloy material forming the honeycomb column.
When the honeycomb column is in a yield stage, the stress sigma meets the following conditions: σ =3/5kEs(h/D)2/3/[(1-υ1/2)sinα(1-cosα)]Wherein upsilon is the Poisson's ratio of the aluminum alloy materials forming the honeycomb column, k is the constraint coefficient of the bottom of the honeycomb column, and k is more than 5.65 and less than or equal to 5.74.
The aluminum alloy honeycomb column is arranged in the outer barrel of the buffering component, so that the protection performance of the seat 1 to a human body when an airplane crashes is improved, and meanwhile, the damage of the crash to the human body can be avoided, so that the seat 1 can absorb the energy transferred to the human body during the crash of the airplane to the maximum extent, the stress value of the spine of the human body is controlled within an acceptable range, and the protection effect is achieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.

Claims (7)

1. A flight seat protection device comprises a seat (1) with a backrest and a seat board, and a base plate (2) for connecting the seat (1) and a bottom plate, and is characterized in that: including seat (1), locate base between seat (1) bottom and base plate (2) and locate the safety mechanism at seat (1) back rear portion, safety mechanism is including locating base plate (2) upper end, two vertical parallel guide (9) that set up along seat (1) back direction of height, be connected through backup pad (12) between the one end that two guide (9) are close to base plate (2), coil spring (11) are established to guide (9) outside cover of backup pad (12) upper end, slider (10) with guide (9) looks adaptation are established to guide (9) outside cover of coil spring (11) upper end, the back of seat (1) is connected in slider (10), establish buffering subassembly (13) between the back rear end of seat (1), two guide (9), buffering subassembly (13) are including urceolus (131) of connecting seat (1) back, The honeycomb column (133) is arranged in the outer cylinder (131), the piston rod (134) is arranged in the outer cylinder (131) and connected with the honeycomb column (133), and one end, far away from the outer cylinder (131), of the piston rod (134) is connected with the support plate (12).
2. A passenger seat protection device according to claim 1, wherein: the base includes four bracing pieces (3), bracing piece (3) two be a set of and be X type structure and arrange, the center junction of the X type knot of two sets of bracing pieces (3) is connected through rotating connecting rod (4), the both ends of bracing piece (3) all are connected the bottom of seat (1) seat face and the upper surface of base plate (2) respectively through the auto-lock slider.
3. A passenger seat protection device according to claim 2, wherein: the two groups of supporting rods (3) close to the bottom of the base are connected with each other through the fixing rods (5), and the two adjacent supporting rods (3) are connected with each other through the energy absorption rods I (6).
4. A passenger seat protection device according to claim 1, wherein: two sides of the seat surface of the seat (1) are hinged with a second energy-absorbing rod (7) through a pin shaft (8), and one end, far away from the pin shaft (8), of the second energy-absorbing rod (7) is erected on the upper surface of the base plate (2).
5. A passenger seat protection device according to claim 1, wherein: one end of the outer cylinder (131) close to the backrest of the seat (1) is connected with the rear end of the backrest through a connecting hinge (132), and one end of the piston rod (134) far away from the outer cylinder (131) is connected with the support plate (12) through a cushion pad (135).
6. A passenger seat protection device according to claim 1, wherein: the honeycomb column (133) is made of aluminum alloy, and the honeycomb column (133) is of a honeycomb structure.
7. A passenger seat protection device according to claim 1, wherein: the spiral spring (11) is arranged outside the guide rail (9) between the support plate (12) and the sliding part (10), the sliding part (10) is connected with the guide rail (9) in a sliding mode through the sliding barrel, two ends of the sliding part (10) and two sides of the sliding barrel are connected with the rear end of a backrest of the seat (1) through bolts, and 1-2 sliding parts (10) are arranged on the guide rail (9).
CN202010943667.0A 2020-09-09 2020-09-09 Air-ride seat protection device Active CN112009693B (en)

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CN112009693B CN112009693B (en) 2022-07-01

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050118763A (en) * 2004-06-15 2005-12-20 현대자동차주식회사 Suspension mechanism for automobile seat
CN105129094A (en) * 2015-09-16 2015-12-09 航宇救生装备有限公司 Lifting energy-absorption base of airplane driver seat
US20160176326A1 (en) * 2014-12-22 2016-06-23 Caterpillar Inc. Seat Suspension System
CN107344515A (en) * 2017-07-27 2017-11-14 重庆怡佳机械制造有限公司 Seat suspension installing mechanism and vehicle are fried in lightning protection
CN109573108A (en) * 2018-12-29 2019-04-05 哈尔滨工业大学 One kind is towards reusable rocket landing supporting leg formula two-stage buffer
CN109677305A (en) * 2019-02-26 2019-04-26 合肥工业大学 A kind of vibration and impingement mix control method of half actively controllable seat suspension
CN111204265A (en) * 2019-12-05 2020-05-29 兵器工业卫生研究所 Suspension type special equipment multistage energy-absorbing lightning protection seat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050118763A (en) * 2004-06-15 2005-12-20 현대자동차주식회사 Suspension mechanism for automobile seat
US20160176326A1 (en) * 2014-12-22 2016-06-23 Caterpillar Inc. Seat Suspension System
CN105129094A (en) * 2015-09-16 2015-12-09 航宇救生装备有限公司 Lifting energy-absorption base of airplane driver seat
CN107344515A (en) * 2017-07-27 2017-11-14 重庆怡佳机械制造有限公司 Seat suspension installing mechanism and vehicle are fried in lightning protection
CN109573108A (en) * 2018-12-29 2019-04-05 哈尔滨工业大学 One kind is towards reusable rocket landing supporting leg formula two-stage buffer
CN109677305A (en) * 2019-02-26 2019-04-26 合肥工业大学 A kind of vibration and impingement mix control method of half actively controllable seat suspension
CN111204265A (en) * 2019-12-05 2020-05-29 兵器工业卫生研究所 Suspension type special equipment multistage energy-absorbing lightning protection seat

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Effective date of registration: 20231220

Address after: No. 2555 Ouhai Avenue, Ouhai District, Wenzhou City, Zhejiang Province, 321006

Patentee after: ZHEJIANG College OF SECURITY TECHNOLOGY

Address before: 321006 1-413, Zhejiang security vocational and technical college, No. 2555, Ouhai Avenue, Ouhai District, Wenzhou City, Zhejiang Province

Patentee before: Cai Yongsen

Patentee before: Chen Jia