Aircraft seat energy absorber
By designing an energy absorber structure combining metal wire/metal belt and roller box on the aircraft seat, the problem that the prior art is difficult to effectively absorb the impact energy of the aircraft is solved, and a safe, stable and repeatable energy absorption effect is achieved.
Patent Information
- Application Number
- CN202422915510.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing aircraft seats are difficult to effectively absorb the impact energy of the aircraft, resulting in an increased risk of spinal injury in the human body.
Design an aircraft seat energy absorber, adopting a structure that combines metal wire/metal belt with roller box, which passes through the roller groove to form an "S"-shaped path to absorb impact energy.
It realizes effective energy absorption during the impact process, protects the safety of the human spine, maintains the stability of the platform, and converts energy into heat energy to release without any impact on the occupants and the environment.
Smart Images
Figure CN223014900U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of energy absorbers, and particularly relates to an aircraft seat energy absorber. Background Art
[0002] In recent years, the aircraft market has been booming, and such aircraft seats need to be designed specifically according to different dynamic impact load requirements in relevant civil aviation regulations. Since there will be a large deceleration transmitted to the human body through the seat during an emergency landing of an aircraft, considering the human tolerance limit, an energy absorber needs to be installed on the seat to absorb energy, so as to avoid spinal injuries to the human body and ensure the safety of passengers in case of an accident. Summary of the Invention
[0003] The purpose of the utility model is to provide an aircraft seat energy absorber that can absorb the impact energy of an aircraft and is safe, reliable, and capable of repeated energy absorption.
[0004] The purpose of the utility model is solved as follows:
[0005] An aircraft seat energy absorber includes a metal wire / metal strip and a roller box. Two or more rollers are hinged in the roller box through fixing pins, and all the rollers are arranged in a row. The metal wire / metal strip sequentially passes through from top to bottom in an "S" shape, one left and one right, between adjacent two rollers.
[0006] As a further optimization of the above technical solution, each roller is provided with a roller groove, and the outer contour of the cross section of the metal wire / metal strip has a cross-sectional outer contour that matches the roller groove. The metal wire / metal strip sequentially passes through the roller grooves of adjacent two rollers from top to bottom, and the metal wire / metal strip sequentially passes through from top to bottom in an "S" shape, one left and one right, between the roller grooves of adjacent two rollers.
[0007] As a further optimization of the above technical solution, the fitting surface between the metal wire / metal strip and the roller groove is more than 5 degrees of the fitting surface of the roller groove.
[0008] As a further optimization of the above technical solution, the roller box includes two adjacent parallel plates, and the two adjacent plates are fixedly connected by two or more rows of bolts or pin shafts. Sleeves are sleeved on the bolts or pin shafts between the two adjacent plates.
[0009] As a further optimization of the above technical solution, the thickness of the sleeve is greater than the thickness of the roller, so that the roller can rotate freely without being restricted by the plates.
[0010] As a further optimization of the above technical solution, there is a gap between the end face of the roller and the inner surface of the plate.
[0011] As a further optimization of the above technical solution, the outer contour of the cross-section of the metal wire / metal strip is circular or oval or polygonal.
[0012] As a further optimization of the above technical solution, when the metal wire / metal strip moves relative to the roller, the metal wire / metal strip has the same degree of bending and straightening.
[0013] As a further optimization of the above technical solution, the metal wire / metal strip is made of an alloy material with good ductility, preferably bright spring steel wire or piano wire or stainless steel or aluminum alloy.
[0014] As a further optimization of the above technical solution, both ends of the metal wire / metal strip are respectively fixed on the movable frame of the aircraft seat, and the roller box is fixed on the chair leg of the aircraft seat; or both ends of the metal wire / metal strip are respectively fixed on the chair legs of the aircraft seat, and the roller box is fixed on the movable frame of the aircraft seat.
[0015] The prominent advantages of the present utility model compared with the prior art are:
[0016] 1. Safety: The energy absorber of the present utility model can be activated under specific impact stresses and protect the human spine during the entire impact process.
[0017] 2. Stability: During the impact process, the present utility model maintains an appropriate platform stress with basically no fluctuations.
[0018] 3. Designability: The outer contour of the cross-section of the metal wire / metal strip of the energy absorber of the present utility model can be designed into various shapes, such as geometric shapes like circles, rectangles, hexagons, ovals, etc. The roller grooves / grooves of the rollers are designed according to the cross-section of the metal wire / metal strip to ensure the fit between the wire / band and the rollers.
[0019] 4. Irreversible energy conversion: During the entire energy absorption process of the present utility model, the human body kinetic energy is converted into heat energy and released through the plastic deformation of the material, and it has no impact on the occupants and the environment.
[0020] 5. Repeated deformation mode: The metal wire / metal strip of the energy absorber of the present utility model can be repeatedly bent and straightened to the same degree when passing through the rollers to absorb energy.
[0021] 6. Cost and installation: The energy absorber of the present utility model has a simple structure and low manufacturing, installation and maintenance costs. Description of the Drawings
[0022] Figure 1 is the front schematic view of the present utility model.
[0023] Figure 2 is the side schematic view of the present utility model.
[0024] Figure 3 It is a top view schematic diagram of the present utility model.
[0025] Figure 4 It is a three-dimensional schematic diagram of the present utility model.
[0026] Figure 5 It is Figure 3 A-A sectional view of
[0027] Figure 6 It is Figure 5 An enlarged view of part B of Specific embodiments
[0028] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. See Figures 1 - 6 :
[0029] An aircraft seat energy absorber includes a metal wire / metal strip 10 and a roller box 20. Two or more rollers 23 are hinged in the roller box 20 through fixing pins 25. All the rollers 23 are arranged in a row. The metal wire / metal strip 10 sequentially passes through between adjacent two rollers 23 from top to bottom in an "S" shape, one from the left and one from the right.
[0030] As a further optimization of the above technical solution, a roller groove 24 is provided on each roller 23. The outer contour of the cross section of the metal wire / metal strip 10 has an outer contour matching the roller groove 24. The metal wire / metal strip 10 sequentially passes through between the roller grooves 24 of adjacent two rollers 23 from top to bottom in an "S" shape, one from the left and one from the right.
[0031] As a further optimization of the above technical solution, the fitting surface between the metal wire / metal strip 10 and the roller groove 24 is more than 5 degrees of the fitting surface of the roller groove 24.
[0032] As a further optimization of the above technical solution, the roller box 20 includes two adjacent parallel plates 26. The two adjacent plates 26 are fixedly connected by two or more rows of bolts or pin shafts 21. Sleeves 22 are sleeved on the bolts or pin shafts 21 between the two adjacent plates 26.
[0033] As a further optimization of the above technical solution, the thickness of the sleeve 22 is greater than the thickness of the roller 23, so that the roller 23 can rotate freely without being restricted by the plate 26.
[0034] As a further optimization of the above technical solution, there is a gap 27 between the end face of the roller 23 and the inner surface of the plate 26.
[0035] As a further optimization of the above technical solution, the outer contour of the cross-section of the metal wire / metal strip 10 is circular, oval or polygonal, and the polygon is, for example, a rectangle, a pentagon, a hexagon, an octagon, etc.
[0036] As a further optimization of the above technical solution, when the metal wire / metal strip 10 moves relative to the roller 23, the metal wire / metal strip 10 has the same degree of bending and straightening.
[0037] As a further optimization of the above technical solution, the metal wire / metal strip 10 is made of an alloy material with good ductility, preferably bright spring steel wire, piano wire, stainless steel or aluminum alloy.
[0038] As a further optimization of the above technical solution, both ends of the metal wire / metal strip 10 are respectively fixed on the movable frame of the aircraft seat, and the roller box 20 is fixed on the chair leg of the aircraft seat; or both ends of the metal wire / metal strip 10 are respectively fixed on the chair leg of the aircraft seat, and the roller box 20 is fixed on the movable frame of the aircraft seat. The relative movement between the metal wire / metal strip 10 and the roller box 20 realizes energy conversion by mutual extrusion in the roller groove, converts the impact energy into the deformation energy and tiny displacement movement of the metal wire / metal strip 10, maintains the stability of the aircraft seat, and further reduces the large impact load borne by the occupant instantaneously.
[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still make simple substitutions or modifications to the technical solutions or technical features recorded in the foregoing embodiments with similar technologies, and these simple substitutions or modifications do not make the essence of the corresponding technical solutions deviate from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.
Claims
1. An aircraft seat energy absorber, characterized in that: It includes a metal wire / metal belt and a roller box, wherein two or more rollers are hingedly connected by a fixing pin in the roller box, and all the rollers are arranged in a row. The metal wire / metal belt passes through two adjacent rollers in an "S" shape from top to bottom, one on the left and one on the right.
2. The aircraft seat energy absorber according to claim 1, characterized in that: Each of the rollers is provided with a roller groove, and the cross-sectional outer contour of the metal wire / metal belt has a cross-sectional outer contour matching the roller groove. The metal wire / metal belt passes through the roller grooves of two adjacent rollers in an "S" shape from top to bottom, one on the left and one on the right.
3. The aircraft seat energy absorber according to claim 1, characterized in that: The contact surface between the metal wire / metal belt and the roller groove is more than 5 degrees of the contact surface of the roller groove.
4. The aircraft seat energy absorber according to claim 1, characterized in that: The roller box comprises two adjacent plates parallel to each other, the two adjacent plates are fixedly connected by more than two rows of bolts or pins, and sleeves are mounted on the bolts or pins between the two adjacent plates.
5. The aircraft seat energy absorber according to claim 4, characterized in that: The thickness of the sleeve is greater than the thickness of the roller, so that the roller can rotate freely without being restricted by the plate.
6. The aircraft seat energy absorber according to claim 4, characterized in that: There is a gap between the end surface of the roller and the inner surface of the plate.
7. The aircraft seat energy absorber according to claim 1, characterized in that: The outer contour of the cross section of the metal wire / metal strip is circular, elliptical or polygonal.
8. The aircraft seat energy absorber according to claim 1, characterized in that: When the metal wire / metal belt moves relative to the roller, the metal wire / metal belt has the same degree of bending and straightening.
9. The aircraft seat energy absorber according to claim 1, characterized in that: The metal wire / metal strip is made of an alloy material with good ductility.
10. The aircraft seat energy absorber according to claim 9, characterized in that: The two ends of the metal wire / metal belt are respectively fixed to the movable frame of the aircraft seat, and the roller box is fixed to the legs of the aircraft seat; or the two ends of the metal wire / metal belt are respectively fixed to the legs of the aircraft seat, and the roller box is fixed to the movable frame of the aircraft seat.