CN109123876A - A kind of helmet based on negative poisson's ratio structure cell - Google Patents
A kind of helmet based on negative poisson's ratio structure cell Download PDFInfo
- Publication number
- CN109123876A CN109123876A CN201811209409.9A CN201811209409A CN109123876A CN 109123876 A CN109123876 A CN 109123876A CN 201811209409 A CN201811209409 A CN 201811209409A CN 109123876 A CN109123876 A CN 109123876A
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- Prior art keywords
- negative poisson
- walled
- structure cell
- isosceles trapezoid
- ratio structure
- Prior art date
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- 239000000872 buffer Substances 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 11
- 230000004224 protection Effects 0.000 claims abstract description 8
- 230000001012 protector Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 10
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 241000345998 Calamus manan Species 0.000 claims description 6
- 235000012950 rattan cane Nutrition 0.000 claims description 6
- 239000006262 metallic foam Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 5
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- 238000009826 distribution Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 51
- 238000010586 diagram Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
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- 238000005260 corrosion Methods 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 210000003850 cellular structure Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/18—Face protection devices
- A42B3/20—Face guards, e.g. for ice hockey
Abstract
The present invention provides a kind of helmet based on negative poisson's ratio structure cell; helmet protector including neck after shell, buffer area, liner, faceplate and protection; shell is hemispherical; setting buffers are between shell and liner; buffer area includes the lateral multiple negative poisson's ratio structure cells securely connected and the filler being filled between multiple negative poisson's ratio structure cells; concentric spherical shell is formed with shell after multiple negative poisson's ratio structure cell arranged distributions, negative poisson's ratio structure cell is made of the outer isosceles trapezoid thin-walled of open-bottom and the interior isosceles trapezoid thin-walled of open-bottom.Buffer area of the invention can sufficiently be resisted from external load pressure, improve the energy absorbing efficiency of the helmet, so that impact force is become more steady, considerably increased the safety of collision, reduce the injury to people；It is filled with filler around each negative poisson's ratio structure cell, on the basis of guaranteeing that endergonic structure is light-weighted, cost has been saved and has taken full advantage of space.
Description
Technical field
The invention belongs to security protection equipment technology fields, and in particular to a kind of head based on negative poisson's ratio structure cell
Helmet.
Background technique
With the progress of social development, the traffic trip of people also becomes out of the ordinary convenience.Automobile is gradually in the generation of people
Occupy leading position in step tool, but some small and medium-sized cities still have many people use electric vehicle, motorcycle and from
Driving, it is at this time, just aobvious for electric vehicle driver and occupant's head protection the helmet in traffic accidents occurs with automobile
Especially important.
The most semicirculars in shape of the helmet currently on the market are mainly made of shell, lining and buffer area three parts, wherein delaying
It rushes area and has added fraction of metal foam, safety coefficient is not unusual height, though it can locally stop some thorns compared with sharp objects
It wears, but the energy from external applied load of spreadability cannot be born.When the emergency cases such as meet an automobile accident, if head is by tight
Weight shock, caused by consequence it is very serious.
Poisson's ratio refer to material when unidirectional tension or in compression, the ratio of the absolute value of transverse normal strain and axial normal strain
Value, is also Poisson ratio, it is the elastic constant for reflecting material transversely deforming.Negative poisson's ratio (Negative Poissons
Ratio) effect, when referring to Tensile, material laterally expands in elastic range, and it is compressed when, material is in elastic model
Enclose the phenomenon that interior transverse direction is shunk.Negative poisson's ratio material compared to traditional positive Poisson ratio material (common in nature) and
Speech has the advantage that other materials cannot compare at many aspects due to having the peculiar property different from common material,
The physical mechanical property of especially material is greatly improved, and such as improves the modulus of shearing of material, the anti-notch of material
The rebound toughness of energy, break resistance and material.
Application of the negative poisson's ratio material in we live also becomes more and more extensive, since the Poisson's ratio of material influences
The transmission and reflection of stress wave, the elimination of stress and the stress distribution near crackle, so negative poisson's ratio material can be applied
In the manufacture security protections such as fastener or safety belt equipment.By extraneous compression stress act on when negative poisson's ratio material perpendicular to
The transverse direction of Impact direction is shunk, and Impact direction expands, and expansion can offset the effect of extraneous stress, to improve this
The anti-load-bearing capacity equipped a bit.
Summary of the invention
The helmet of the invention mainly angularly considers from energy absorption, Rational structure design, light, save the cost, adopts
Part energy can be absorbed when by external force load with a kind of negative poisson's ratio structure cell, by this structure to energy
Weaken, the energy for being finally applied to wearer's head will be reduced greatly.The crashworthiness of the helmet can be improved in one aspect of the present invention
Property and reduce peak force, so that it is kept stable by internal structure after external load, not too large deformation, to alleviate
It the damaged degree of the helmet and is damaged caused by driver head, on the other hand makes helmet lightweight, solve conventional helmet weight
The problems such as too heavy.
The present invention provides a kind of helmet based on negative poisson's ratio structure cell, including shell, buffer area and liner, described
Shell is hemispherical, and for the setting buffers between the shell and liner, the setting buffers have 2 layers or more multiple jails
The negative poisson's ratio structure cell being solidly connected forms concentric layer with the shell after the multiple negative poisson's ratio structure cell arrangement.
Further, the negative poisson's ratio structure cell is by the outer isosceles trapezoid thin-walled and open-bottom of open-bottom
Isosceles trapezoid thin-walled composition, the outer isosceles trapezoid thin-walled are fixedly connected with the bottom both ends of interior isosceles trapezoid thin-walled, described interior
The height of isosceles trapezoid thin-walled is less than the height of the outer isosceles trapezoid thin-walled, the outer isosceles trapezoid thin-walled and interior isosceles trapezoid
The upper bottom of thin-walled is both facing to the shell.
Further, the thickness of the outer isosceles trapezoid thin-walled is greater than the thickness of interior isosceles trapezoid thin-walled, the outer isosceles
The upper bottom of trapezoidal thin-walled and interior isosceles trapezoid thin-walled is equal.
Further, the size of the multiple negative poisson's ratio structure cell is identical.
Further, the size of the multiple negative poisson's ratio structure cell becomes in gradient from layer structure to endothecium structure
It is small, the thickness of the outer isosceles trapezoid thin-walled of the multiple negative poisson's ratio structure cell and interior isosceles trapezoid thin-walled from layer structure to
Endothecium structure is thinning in gradient.
Further, the shell is one layer of titanium alloy.
Further, between the multiple negative poisson's ratio structure cell and inside the single negative poisson's ratio structure cell
Gap is filled with filler, and the filler is the metal foam of honeycomb.
Further, the material of the negative poisson's ratio structure cell be metal, rubber, bamboo and wood and fiber one kind or several
Kind.
Further, the helmet protector of neck after further including faceplate and protecting, the material of the faceplate are PC tree
Rouge, the eyeglass outside of the faceplate are coated with cured film and antiultraviolet film, and the material of the helmet protector is method rattan, described
Method rattan is injected with water-soluble titanium.
Further, the liner is traverse net structure, and the lining activities are connected to the inner helmet.
Beneficial effects of the present invention:
Setting buffers of the invention have negative poisson's ratio structure cell, can sufficiently resist from external load pressure,
The energy absorbing efficiency for improving the helmet makes impact force become more steady, considerably increases safety when collision, reduce to people's
Injury.
Negative poisson's ratio structure cell of the invention is when by external load pressure, top on the outside of bottom on outer isosceles trapezoid thin-walled
Firmly on interior isosceles trapezoid thin-walled on the inside of bottom, interior isosceles trapezoid thin-walled inwardly pulls outer isosceles trapezoid thin-walled, makes negative poisson's ratio cellular
Structure narrows perpendicular to pressure direction cross-direction shrinkage, so that longitudinal thickness can greatly increase.During collision deformation, indulge
External load pressure can be offset and be buffered to increase to thickness, and the variation of pressure will become very gentle, considerably increase and touch
Safety when hitting reduces the injury to wearer.
The thickness of outer isosceles trapezoid thin-walled of the invention is greater than the thickness of interior isosceles trapezoid thin-walled, and this gradient-structure is set
Meter can make outer isosceles trapezoid thin-walled intensity and rigidity with higher on year-on-year basis, the modeling with higher on year-on-year basis of interior isosceles trapezoid thin-walled
Property and toughness, the negative poisson's ratio structure cell absorbability of energy is improved, significantly improve anti-external load impact capacity；Outside
The upper bottom of isosceles trapezoid thin-walled and interior isosceles trapezoid thin-walled is equal, when the helmet is by external load collision impact, outer isosceles ladder
Shape thin-walled be when narrowing with interior isosceles trapezoid thin-walled cross-direction shrinkage it is synchronous, keep structure stress uniform, so as to keep
Negative poisson's ratio structure cell reduces a possibility that shear-deformable impaired when by biggish pressure.
The size of multiple negative poisson's ratio structure cells of the invention becomes smaller in gradient from layer structure to endothecium structure, described
The outer isosceles trapezoid thin-walled of multiple negative poisson's ratio structure cells and the thickness of interior isosceles trapezoid thin-walled are from layer structure to internal layer knot
Structure is thinning in gradient.For spherical structure, the peripheral density internal layer density that compares is low, and negative poisson's ratio of the invention
The density of structure cell is reduced by a certain percentage by layer structure to endothecium structure, generates successional gradient effect.Work as the helmet
When by extraneous load, the density of layer structure is high, can absorb more energy, impact force will when being transmitted to endothecium structure
It is substantially reduced, the head degree that is impacted just will be greatly reduced.
Shell of the invention uses a thin layer of titanium alloy, and the intensity of titanium alloy is high, and corrosion stability is good, cryogenic property
It is good, it can be very good the puncture for resisting external sharp objects；The quality of titanium alloy is relatively light simultaneously, and it is excessive not will increase the helmet
Weight bearing, be convenient for carrying.
The present invention is filled with filler around each negative poisson's ratio structure cell, is guaranteeing the light-weighted base of endergonic structure
On plinth, saved and cost and taken full advantage of space, can also hinder negative poisson's ratio structure cell be collided impact when by
To serious shear-deformable impaired, the stability of negative poisson's ratio structure cell is improved to a certain extent.
PC resin of the invention is a kind of thermoplastic engineering plastic of function admirable, has impact resistance outstanding, resistance to
Creep and good stability of the dimension are heat-resisting, water absorption rate is low, nontoxic.Cured film, uv blocking film are coated outside faceplate, is had well
The effect of light transmission and protection.Liner uses the fabric of traverse net structure, it has good gas permeability, improves helmet wearing
Comfort level.
Inner helmet of the invention is due to using a variety of buffering energy-absorbing structures, so its deformation pattern can be more steady
Fixed, impact force greatly reduces, and at the same time, quality of materials used is light, reasonable price, and the production cost of the helmet is not high, fits
For being widely used to promote.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the appearance diagram of the helmet of the embodiment of the present invention based on negative poisson's ratio structure cell；
Fig. 2 is the cross-sectional view of the helmet of the embodiment of the present invention based on negative poisson's ratio structure cell；
Fig. 3 is single negative poisson's ratio structure cell schematic diagram in the present invention；
Fig. 4 is the three-dimensional structure that two negative poisson's ratio structure cells form in the present invention；
Fig. 5 is that the deformation of negative poisson's ratio structure cell before the collision, in collision, after collision in the case of three kinds is special in the present invention
Sign；
Fig. 6 is that 2 layers of negative poisson's ratio structure cell arrange schematic diagram；
Fig. 7 is the schematic diagram of every layer of 23 negative poisson's ratio structure cell,
Fig. 8 is the schematic diagram of every layer of 46 negative poisson's ratio structure cell.
Fig. 9 is 3 layers of negative poisson's ratio gradient structure cell structural arrangement schematic diagram and partial enlarged view.
Wherein 1, shell, 2, buffer area, 3, liner, 4, faceplate, 5, helmet protector, 21, negative poisson's ratio structure cell,
22, filler, 211, outer isosceles trapezoid thin-walled, 212, interior isosceles trapezoid thin-walled.
Specific embodiment
In order to be more clear the purpose of the present invention, technical solution and advantageous effects, below in conjunction with attached drawing and implementation
Mode, the present invention will be described in further detail, and the schematic diagram in attached drawing only illustrate by presentation technology scheme, the size in attached drawing
It is not offered as actual size and ratio.It should be understood that embodiment described in this specification is used for the purpose of explaining this
Invention is not intended to the limitation present invention.
Such as FIG. 1 to FIG. 2, the present invention provides a kind of helmet based on negative poisson's ratio structure cell, including shell 1, buffer area
2, liner 3, faceplate 4 and protection after neck helmet protector 5, the shell 1 be hemispherical, the buffer area 2 is set to institute
It states between shell 1 and liner 3, the buffer area 2 includes the multiple negative poisson's ratio structure cells 21 laterally securely connected and fills out
Fill the filler 22 between the multiple negative poisson's ratio structure cell 21, the multiple arrangement point of negative poisson's ratio structure cell 21
Concentric spherical shell is formed after cloth with the shell 1, the number of plies that the multiple negative poisson's ratio structure cell 21 arranges is 2 layers or more, Fig. 6
Schematic diagram is arranged for 2 layers of negative poisson's ratio structure cell.Buffer area 2 can sufficiently be resisted from external load pressure, improve head
The energy absorbing efficiency of helmet makes impact force become more steady, considerably increases the safety of collision, reduce the injury to people；?
It is filled with filler 22 around each negative poisson's ratio structure cell 21, on the basis of guaranteeing that endergonic structure is light-weighted, is saved
Cost and take full advantage of space.
As a preferred embodiment, such as Fig. 3, the negative poisson's ratio structure cell 21 by open-bottom outer isosceles trapezoid thin-walled
211 and open-bottom interior isosceles trapezoid thin-walled 212 composition, the outer isosceles trapezoid thin-walled 211 and interior isosceles trapezoid thin-walled 212
Bottom both ends be fixedly connected, the height of the interior isosceles trapezoid thin-walled 212 is less than the height of the outer isosceles trapezoid thin-walled 211
The upper bottom of degree, the outer isosceles trapezoid thin-walled 211 and interior isosceles trapezoid thin-walled 212 is both facing to the shell, the outer isosceles ladder
Shape thin-walled 211 is equal with the upper bottom of interior isosceles trapezoid thin-walled 212, and the thickness of the outer isosceles trapezoid thin-walled 211 is greater than interior etc.
The thickness of the trapezoidal thin-walled 212 of waist.Such as Fig. 4, two negative poisson's ratio structure cells 21 can be connected firmly to one with right-angled intersection
It rises, forms three-dimensional negative poisson's ratio structure cell, the three-dimensional negative poisson's ratio structure cell top view is in cross shape.Such as Fig. 5, bear
Poisson's ratio structure cell 21 withstands interior isosceles trapezoid on the outside of bottom on outer isosceles trapezoid thin-walled 211 when by external load pressure
On thin-walled 212 on the inside of bottom, interior isosceles trapezoid thin-walled 212 inwardly pulls outer isosceles trapezoid thin-walled 211, makes negative poisson's ratio structure cell
21 narrow perpendicular to pressure direction cross-direction shrinkage, so that longitudinal thickness can greatly increase.During collision deformation, collision
The variation of power will become very gentle, considerably increase the safety of collision, reduce the injury to people.Outer isosceles trapezoid is thin
Wall 211 is equal with the upper bottom of interior isosceles trapezoid thin-walled 212, and it is thin that the thickness of outer isosceles trapezoid thin-walled 211 is greater than interior isosceles trapezoid
The thickness of wall 212, the hardness of outer isosceles trapezoid thin-walled 211 are greater than the hardness of interior isosceles trapezoid thin-walled 212.When the helmet is by outer
When load collision impact, outer isosceles trapezoid thin-walled 211 is synchronous when narrowing with interior 212 cross-direction shrinkage of isosceles trapezoid thin-walled
, more energy can be absorbed.
As a preferred embodiment, the shell 1 is one layer of titanium alloy, and the filler 22 is metal foam, the negative pool
Pine than the material of structure cell 21 be metal, rubber, bamboo and wood and fiber one or more, the material of the helmet protector 5 is
Method rattan, the method rattan are injected with water-soluble titanium.The liner 3 is the terylene of traverse net structure, and the liner 3 is movably connected on institute
State inner helmet.The material of the faceplate 4 is PC resin, and cured film is coated with outside the eyeglass of the faceplate 4 and is prevented
Antiultraviolet film.Shell 1 uses a thin layer of titanium alloy, and the intensity of titanium alloy is high, and corrosion stability is good, low temperature performance well, can be with
The puncture of external sharp objects is resisted well；The quality of titanium alloy is relatively light simultaneously, not will increase the excessive weight bearing of the helmet,
It is convenient for carrying.The PC resin of use is a kind of thermoplastic engineering plastic of function admirable, has impact resistance outstanding, resistance to compacted
Become and good stability of the dimension, it is heat-resisting, water absorption rate is low, nontoxic.Cured film, uv blocking film are coated outside faceplate, is had well thoroughly
The effect of light and protection.For liner 3 using the fabric of traverse net structure, it has good gas permeability, improves helmet wearing
Comfort level.
As a preferred embodiment, the every layer number of the negative poisson's ratio structure cell 21 is set according to the space size of buffer area 2
23 or more are set to, Fig. 7 is the schematic diagram of every layer of 23 negative poisson's ratio structure cell, and Fig. 8 is every layer of 46 negative poisson's ratio cellular
The schematic diagram of structure.Quantity is more, and under the steric requirements of same buffer area 2, isosceles trapezoid transverse width is smaller, outer isosceles trapezoid
The difference in length of thin-walled 211 and interior isosceles trapezoid thin-walled 212 is bigger, and the density of negative poisson's ratio structure cell is bigger, bumper and absorbing shock
Effect will be more preferable.
As a preferred embodiment, such as Fig. 9, there are three layers of negative poisson's ratio structure cell 21 to extend to internal layer from outer layer, it is each
The upper bottom of layer structure is connected and the size density of structure gradually becomes smaller by a certain percentage, to generate successional gradient effect
Fruit.It is constantly reduced from periphery to internal layer density, so that external load pressure is applied to by peripheral two layers of energy attenuating
The loading force of third layer just greatly reduces, and the degree that head is impacted just will be greatly reduced.
The foregoing describe basic principles and main features of the invention and advantages of the present invention.The technical staff of the industry answers
The understanding, the present invention is not limited to the above embodiments, and the above embodiments and description only describe of the invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these change and change
Into all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (10)
1. a kind of helmet based on negative poisson's ratio structure cell, which is characterized in that including shell, buffer area and liner are described
Shell is hemispherical, and for the setting buffers between the shell and liner, the setting buffers have 2 layers or more multiple jails
The negative poisson's ratio structure cell being solidly connected forms concentric layer with the shell after the multiple negative poisson's ratio structure cell arrangement.
2. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that the negative poisson's ratio member
Born of the same parents' structure is made of the outer isosceles trapezoid thin-walled of open-bottom and the interior isosceles trapezoid thin-walled of open-bottom, the outer isosceles trapezoid
Thin-walled is fixedly connected with the bottom both ends of interior isosceles trapezoid thin-walled, and the height of the interior isosceles trapezoid thin-walled is less than the outer isosceles
The upper bottom of the height of trapezoidal thin-walled, the outer isosceles trapezoid thin-walled and interior isosceles trapezoid thin-walled is both facing to the shell.
3. the helmet based on negative poisson's ratio structure cell according to claims 2, which is characterized in that the outer isosceles trapezoid
The thickness of thin-walled is greater than the thickness of interior isosceles trapezoid thin-walled, the upper bottom phase of the outer isosceles trapezoid thin-walled and interior isosceles trapezoid thin-walled
Deng.
4. the helmet based on negative poisson's ratio structure cell according to claims 3, which is characterized in that the multiple negative Poisson
It is more identical than the size of structure cell.
5. the helmet based on negative poisson's ratio structure cell according to claims 3, which is characterized in that the multiple negative Poisson
Size than structure cell becomes smaller in gradient from layer structure to endothecium structure, the multiple negative poisson's ratio structure cell it is outer etc.
The thickness of the trapezoidal thin-walled of waist and interior isosceles trapezoid thin-walled is thinning in gradient from layer structure to endothecium structure.
6. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that the shell is one layer
Titanium alloy.
7. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that the multiple negative Poisson
It is filled with filler than the gap between structure cell and inside the single negative poisson's ratio structure cell, the filler is bee
The metal foam of nest structure.
8. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that the negative poisson's ratio member
The material of born of the same parents' structure be metal, rubber, bamboo and wood and fiber one or more.
9. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that further include faceplate
With the helmet protector of neck after protection, the material of the faceplate is PC resin, is coated with outside the eyeglass of the faceplate hard
Change film and antiultraviolet film, the material of the helmet protector is method rattan, and the method rattan is injected with water-soluble titanium.
10. the helmet based on negative poisson's ratio structure cell according to claims 1, which is characterized in that the liner is six
Angle eyed structure, the lining activities are connected to the inner helmet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209409.9A CN109123876A (en) | 2018-10-17 | 2018-10-17 | A kind of helmet based on negative poisson's ratio structure cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209409.9A CN109123876A (en) | 2018-10-17 | 2018-10-17 | A kind of helmet based on negative poisson's ratio structure cell |
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| Publication Number | Publication Date |
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| CN109123876A true CN109123876A (en) | 2019-01-04 |
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| CN201811209409.9A Pending CN109123876A (en) | 2018-10-17 | 2018-10-17 | A kind of helmet based on negative poisson's ratio structure cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821224A (en) * | 2019-03-27 | 2019-05-31 | 南京工业大学 | A kind of boxing glove and its design method with Negative poisson's ratio |
| CN112013717A (en) * | 2020-08-25 | 2020-12-01 | 清华大学苏州汽车研究院（相城） | For military use bionical protection helmet |
| CN114312365A (en) * | 2021-12-14 | 2022-04-12 | 南京航空航天大学 | Reusable anti-impact module and working method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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