CN213800198U - Variable force energy absorber - Google Patents
Variable force energy absorber Download PDFInfo
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- CN213800198U CN213800198U CN202022570149.7U CN202022570149U CN213800198U CN 213800198 U CN213800198 U CN 213800198U CN 202022570149 U CN202022570149 U CN 202022570149U CN 213800198 U CN213800198 U CN 213800198U
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- curling part
- energy absorber
- curled portion
- energy
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Abstract
The utility model discloses a variable force value energy absorber, which comprises a curling part and a non-curling part, wherein the non-curling part is cylindrical, the first end of the curling part is fixedly connected with the non-curling part along the tangential direction of the non-curling part, and the curling part is wound at least for one circle along the circumferential direction of the non-curling part; the second end of the curled portion is freely arranged, and the thickness of the curled portion is gradually reduced from the second end to the first end. The advantages are that: the energy absorber is small in size, light in weight, easy to process and low in cost, the thickness of the energy absorber is gradually changed, the energy absorbing force value is gradually increased in the whole stretching stroke of energy absorption, the impact stroke of a person with larger weight can be effectively shortened, the person with larger weight still keeps a better sitting posture when the person crashes, and secondary damage is avoided.
Description
Technical Field
The utility model relates to an energy absorber technical field especially relates to a variable force value energy absorber.
Background
In order to ensure the life safety of a driver and a passenger, most helicopter seats have an anti-crash function, and the key component is an energy absorber. The airplane generates high impact energy when falling to the ground, the impact force on the energy absorber reaches the starting load, and after the energy absorber generates plastic deformation to absorb most of the energy, the energy absorber transmits smaller energy to a driver or passengers, thereby ensuring the life safety of personnel.
The common energy absorber comprises an expansion pipe and a turnover pipe, the shape of the energy absorber is a slender cylinder, one end of the energy absorber is connected with the seat framework, and the other end of the energy absorber is connected with the seat surface. The two kinds of energy absorbers use thin-wall pipe as their energy absorbing elements, and the biggest characteristic is that the energy absorbing value is kept unchanged in the whole impact stroke. The weight of the driver is different from 60kg to 90kg, and the weight of the driver can reach 120kg when the passenger carries the equipment. When a person with the largest weight sits, once a crash accident happens, the expansion stroke of the energy absorber is 3 to 4 times that of the person with the smallest weight, the seat surface has large descending amplitude, the body is difficult to ensure normal sitting posture, and secondary injury can be caused in serious cases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a variable force value energy absorber to solve the aforementioned problem that exists among the prior art.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a variable force energy absorber comprises a curled portion and a non-curled portion, wherein the non-curled portion is cylindrical, a first end of the curled portion is fixedly connected with the non-curled portion along the tangential direction of the non-curled portion, and the curled portion is wound at least one turn along the circumferential direction of the non-curled portion; the second end of the curled portion is freely arranged, and the thickness of the curled portion is gradually reduced from the second end to the first end.
Preferably, the curled portion and the non-curled portion are integrally formed.
Preferably, the curled part is an elastic member capable of being wound around the non-curled part or stretched; the curling part is in a strip-shaped plate-shaped structure after being stretched.
Preferably, the second end of the curled portion is provided with a first connection hole, and the non-curled portion is provided with a second connection hole penetrating through opposite ends thereof in a direction parallel to an axis thereof.
The utility model has the advantages that: the energy absorber is small in size, light in weight, easy to process and low in cost, the thickness of the energy absorber is gradually changed, the energy absorbing force value is gradually increased in the whole stretching stroke of energy absorption, the impact stroke of a person with larger weight can be effectively shortened, the person with larger weight still keeps a better sitting posture when the person crashes, and secondary damage is avoided.
Drawings
FIG. 1 is a schematic structural view of an energy absorber according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention after the energy absorber has been extended;
FIG. 3 is a side view of an energy absorber in an embodiment of the present invention;
FIG. 4 is a schematic diagram of the variation of the energy absorption value of the energy absorber according to an embodiment of the present invention.
In the figure: 1. a curling portion; 2. a non-curled portion; 3. a first connection hole; 4. and a second connection hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, 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 given by way of illustration only.
As shown in fig. 1 to 3, in the present embodiment, a variable force energy absorber is provided, which includes a curled portion 1 and a non-curled portion 2, where the non-curled portion 2 is cylindrical, a first end of the curled portion 1 is fixedly connected to the non-curled portion 2 along a tangential direction of the non-curled portion 2, and the curled portion 1 is wound at least one turn along a circumferential direction of the non-curled portion 2; the second end of the curled portion 1 is freely disposed, and the thickness of the curled portion 1 is gradually reduced from the second end to the first end.
In the present embodiment, the curled portion 1 and the non-curled portion 2 are integrally formed.
In this embodiment, the curled portion 1 is an elastic member capable of being wound around the non-curled portion 2 or stretched; the curling part 1 is in a strip-shaped plate-shaped structure after being stretched.
In this embodiment, the second end of the curled portion 1 is provided with a first connection hole 3, and the non-curled portion 2 is provided with a second connection hole 4 penetrating through opposite ends thereof in a direction parallel to an axis thereof.
In the embodiment, the original shape of the energy absorber is similar to that of a tape, when the energy absorber is used, the energy absorber starts to stretch after receiving impact, the curled part 1 gradually stretches from the non-curled part 2 in the stretching process, the energy absorbing value of the energy absorber gradually rises, and the impact stroke of a person with large weight can be effectively shortened.
In the embodiment, the thickness of the energy absorber is gradually reduced, so that two benefits are achieved, namely, the material usage of the energy absorber can be reduced; secondly, the plate thickness is gradually reduced to change the suction force of the energy absorber, and the energy absorption value of the energy absorber is gradually increased along with the increase of the energy absorber with reference to the attached figure 4.
In this embodiment, the curled portion 1 is an elastic member, which can be wound around the non-curled portion 2 or unwound from the non-curled portion 2, so that it is deformed to generate an effective suction force when in use.
In the embodiment, when the energy absorber is used on a helicopter seat, the seat framework and the seat surface are respectively connected through the first connecting hole 3 and the second connecting hole 4 which are arranged on the energy absorber, when the helicopter crashes, the seat surface descends, the energy absorber can be unfolded immediately, impact formation of passengers is effectively shortened, the passengers can still keep a good sitting posture when crashes happen, and secondary injury is avoided.
Through adopting the utility model discloses an above-mentioned technical scheme has obtained following profitable effect:
the utility model discloses in provide a variable force value energy absorber, the energy absorber is small, light in weight, easily processing, with low costs, the thickness gradual change of energy absorber makes it in the whole tensile stroke of energy-absorbing, and the energy-absorbing power value rises gradually, can effectively shorten the impact stroke of the great person of weight, makes it still keep comparatively good position of sitting when the crash accident, avoids causing secondary injury.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (4)
1. The utility model provides a variable force value energy absorber which characterized in that: the non-curling part is cylindrical, a first end of the curling part is fixedly connected with the non-curling part along the tangential direction of the non-curling part, and the curling part is wound at least one circle along the circumferential direction of the non-curling part; the second end of the curled portion is freely arranged, and the thickness of the curled portion is gradually reduced from the second end to the first end.
2. The variable force energy absorber of claim 1, wherein: the curled portion and the non-curled portion are integrally formed.
3. The variable force energy absorber of claim 2, wherein: the curling part is an elastic part and can be wound on the non-curling part or stretched out; the curling part is in a strip-shaped plate-shaped structure after being stretched.
4. The variable force energy absorber of claim 3, wherein: the second end of the curling part is provided with a first connecting hole, and the non-curling part is provided with a second connecting hole penetrating through the two opposite ends of the non-curling part along the direction parallel to the axis of the non-curling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570149.7U CN213800198U (en) | 2020-11-09 | 2020-11-09 | Variable force energy absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570149.7U CN213800198U (en) | 2020-11-09 | 2020-11-09 | Variable force energy absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213800198U true CN213800198U (en) | 2021-07-27 |
Family
ID=76966369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022570149.7U Active CN213800198U (en) | 2020-11-09 | 2020-11-09 | Variable force energy absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213800198U (en) |
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2020
- 2020-11-09 CN CN202022570149.7U patent/CN213800198U/en active Active
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