CN108297745A - A kind of the negative poisson's ratio honeycomb shock resistance energy-absorbing method and device of speed adaptive - Google Patents
A kind of the negative poisson's ratio honeycomb shock resistance energy-absorbing method and device of speed adaptive Download PDFInfo
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- CN108297745A CN108297745A CN201810194571.1A CN201810194571A CN108297745A CN 108297745 A CN108297745 A CN 108297745A CN 201810194571 A CN201810194571 A CN 201810194571A CN 108297745 A CN108297745 A CN 108297745A
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 22
- 230000035939 shock Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000006096 absorbing agent Substances 0.000 claims abstract description 133
- 230000006835 compression Effects 0.000 claims abstract description 40
- 238000007906 compression Methods 0.000 claims abstract description 40
- 230000001413 cellular effect Effects 0.000 claims abstract description 36
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000000280 densification Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 13
- 230000001133 acceleration Effects 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/265—Adaptations for seat belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
- B60R2022/288—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices with means to adjust or regulate the amount of energy to be absorbed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
- B60R2022/289—Energy-absorption curves
Abstract
The present invention relates to a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing methods of speed adaptive, using the cellular twin-stage energy absorber energy-absorbing of negative poisson's ratio, generated kinetic energy when two-stage being divided to absorb collision；When being collided, the axis of traction that the pulling force that safety belt generates passes through U-shaped piece of pulling movable pulley mechanism, axis of traction drives movable pulley forward slip on the third sliding slot of main body rack, movable pulley pulls frame to move forward by leash, then compressional axis moves forward the compression blocks squeezed, compression blocks squeeze honeycomb box, and then squeeze honeycomb；When compressing force suffered by the first order energy absorber is more than the initial peak value load of second level energy absorber, the honeycomb of second level energy absorber starts to be plastically deformed, and twin-stage energy absorber simultaneously participates in energy-absorbing.The invention further relates to energy absorption device, this energy absorption device adapts to different impact velocitys, effectively reduces the child passenger shock loading suffered in collision, improves Safety of child passenger, belongs to child safety seat field.
Description
Technical field
The present invention relates to the negative poisson's ratio honeycomb shock resistances of child safety seat field more particularly to a kind of speed adaptive
Energy-absorbing method and device.
Background technology
With quickly increasing year by year for social automobile quantity, automotive safety has become the important research in automotive research field
Direction, and the protection of child passenger has received more and more attention and has paid attention in collision process, the safety by bus of child passenger
Have become the important topic of automotive safety Journal of Sex Research.Child passenger is opposite to be grown up, and the ratio and proportion of parts of body have
Prodigious difference such as the 30% of child passenger head percentage of liveweight, and is grown up only 6%, and it is opposite that this directly results in child passenger
The centre of body weight higher of adult, the ability that external impact is resisted in collision accident is worse, in addition what children member itself developed
Not exclusively, neck and body ligament are more weak, these more directly increase child passenger probability injured in collision process.
And child safety seat plays an important role in safety of the protection children member in automobile collision procedure, traditional children peace
Full seat relies primarily on restraint strap system and child passenger is strapped in seat, and the active position of safety belt is chest, in addition youngster
Since inertia can turn forward, excessive impact acceleration can cause children fatal harm on virgin head, therefore, reduce collision
When children suffered by acceleration play an important role to the protection of children member.By in safety belt and child safety seat
It is one of the maximally efficient means to solve the above problems and mode that a kind of energy absorbing device is arranged between ontology.
Although there is now safety seat by the way that energy absorbing device is arranged between safety belt and child safety seat ontology,
But its energy absorption device is using impact energy-absorbing mode outside single layer face.This energy absorption device, initial peak value load and acceleration are spent
Height is not a kind of ideal endergonic structure.
Invention content
For the technical problems in the prior art, the purpose of the present invention is：One kind is provided and adapts to different impact speed
Degree, effectively reduce child passenger in collision suffered shock loading, improve Safety of child passenger have impact velocity from
The child safety seat energy-absorbing method of adaptation.
Another object of the present invention is to provide a kind of negative poisson's ratio honeycomb shock resistance energy absorption devices of speed adaptive.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, uses the cellular twin-stage energy-absorbing of negative poisson's ratio
Mechanism energy-absorbing, generated kinetic energy when two-stage being divided to absorb collision；
When being collided, the pulling force that safety belt generates passes through the axis of traction of U-shaped piece of pulling movable pulley mechanism, axis of traction drive
Dynamic movable pulley forward slip on the third sliding slot of main body rack, movable pulley pull the bee of first order energy absorber by leash
Nest frame moves forward, and then the compressional axis of first order energy absorber moves forward the compression blocks for squeezing first order energy absorber, the
The compression blocks of level-one energy absorber squeeze the honeycomb box of first order energy absorber, and then squeeze the honeycomb of first order energy absorber；
When compressing force suffered by the first order energy absorber is more than the initial peak value load of second level energy absorber, movable pulley
The frame of second level energy absorber is pulled to move forward by leash, then the compression axial advancement of second level energy absorber
The dynamic compression blocks for squeezing second level energy absorber, the compression blocks of second level energy absorber squeeze the honeycomb of second level energy absorber
Box, and then squeeze the honeycomb of second level energy absorber；
When the honeycomb of second level energy absorber starts plastic deformation, first order energy absorber and second level energy absorber are simultaneously
Energy-absorbing is participated in, after first order energy absorber reaches the densification stage, the honeycomb of second level energy absorber continues to be plastically deformed, with
The further progress of compression, second level energy absorber reaches densification.
It is further：Main body rack includes symmetrically arranged two pieces of support plates, connecting plate, symmetrically arranged two struts；
The side of connecting plate is connect with the end of two pieces of support plates, and the other side of connecting plate is connect with the end of two struts, is set on support plate
It is useful for the first sliding groove that first order energy absorber slides and the second sliding slot slided for second level energy absorber, is set on strut
It is useful for the third sliding slot of movable pulley sliding.
It is further：First order energy absorber and second level energy absorber include compressional axis, are sleeved on compressional axis
Compression blocks, two open honeycomb boxes, honeycomb, frame；Cellular one end is placed in a honeycomb box, the cellular other end
It is placed in another honeycomb box, one of honeycomb box is connected to close to compression blocks, another honeycomb box on connecting plate, compression
Axis is mounted on frame, and support plate and connecting plate are located at the inside of frame；The compressional axis of first order energy absorber passes through first
The compressional axis of sliding slot, second level energy absorber passes through second sliding slot, and one end of leash is connected to the bee of first order energy absorber
On nest frame, the other end of leash is connected on the frame of second level energy absorber.
It is further：Frame is equipped with connecting rod, and the end of leash is connected in connecting rod.
It is further：Movable pulley mechanism includes the axis of traction across third sliding slot, the bearing being sleeved on axis of traction, set
Movable pulley on bearing, U-shaped piece be sleeved on axis of traction；Safety belt is connected on U-shaped piece.
It is further：Compressional axis is equipped with split washer, and split washer is located at the outside of frame.
It is further：Compression blocks include integrally formed compression plate and with holes piece, and one of honeycomb box is close to pressure
Contracting plate, compressional axis pass through with holes piece.
It is further：Energy absorption device further includes fixing axle, and the fixing axle of two pieces of support plates is passed through to be mounted on children's seat.
It is further：The honeycomb of first order energy absorber and the honeycomb of second level energy absorber are by with negative poisson's ratio
The cellular of effect forms, and the cross sectional shape of cellular is indent hexagon.
A kind of negative poisson's ratio honeycomb shock resistance energy absorption device of speed adaptive, including main body rack, are slidably mounted at
First order energy absorber on main body rack and second level energy absorber, leash；First energy absorber is located at the second energy-absorbing machine
One end of the lower section of structure, leash is connected on the frame of first order energy absorber, and the other end of leash is connected to second
On the frame of grade energy absorber, the initial peak value load of first order energy absorber is less than the initial spike of second level energy absorber
Load.
Generally speaking, the invention has the advantages that：
1, impact kinetic energy when colliding is passed through cellular plastic deformation by the present invention using upper layer and lower layer classification energy-absorbing component
It dissipates, solves the problems, such as that traditional single layer energy absorption device initial peak value load is excessively high, acceleration is excessive, to improve children
Security performance of the occupant in collision.
2, the present invention is novel in design, and upper layer and lower layer energy-absorbing component is connected by using movable pulley and leash, different
Impact velocity, upper layer and lower layer energy-absorbing component can be automatically according to the adaptive adjustings of itself cellular thickness and impact velocity
The state of upper layer and lower layer honeycomb energy-absorbing and time, after realizing the peak load and the raising that reduce the collision starting stage as far as possible
The self-adaptive features of continuous continuous energy-absorbing, impact velocity improve significantly with respect to energy-absorbing tool outside existing equipment single layer face.
3, reasonable design of the present invention, movable pulley interlock upper layer and lower layer energy-absorbing component, the thickness of two layers of cellular configuration respectively
It is inconsistent, realize that the adaptive energy-absorbing of two kinds of endergonic structures is adjusted, to effectively weaken in collision safety belt to child chest
The safety of children member is protected in caused impact.
Description of the drawings
Fig. 1 is the stereogram of this energy absorption device.
Fig. 2 is the front view of this energy absorption device.
Fig. 3 is the vertical view of this energy absorption device.
Fig. 4 is the structural schematic diagram of main body rack.
Fig. 5 is the structural schematic diagram of first order energy absorber and second level energy absorber.
Fig. 6 is the power and displacement curve schematic diagram of honeycomb energy-absorbing component.
Fig. 7 is cellular cross-sectional view.
Fig. 8 is the cross-sectional view of cellular.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
It is now attached to what is occurred in Figure of description for the ease of uniformly checking each reference numeral inside Figure of description
Icon note is unitedly described as follows：
1 is main body support frame, and 2 be fixing axle, and 3 be compression blocks, and 4 be honeycomb box, and 5 be honeycomb, and 6 be frame, and 7 be traction
Band, 8 be movable pulley, and 9 be split washer, and 10 be U-shaped piece, and 11 be connecting rod, and 12 be safety belt, and 13 be axis of traction, and 14 be compression
Axis, 1-1 are support plate, and 1-2 is connecting plate, and 1-3 is strut, and 1-4 is the first sliding groove, and 1-5 is second sliding slot, and 1-6 is third sliding slot,
3-1 is with holes piece, and 3-2 is compression plate, and 5-1 is cellular.
For sake of convenience, now hereafter described orientation is described as follows：Hereafter described front-rear direction and Fig. 2 itself up and down
Upper lower right left direction it is consistent.
A kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, uses the cellular twin-stage energy-absorbing of negative poisson's ratio
Mechanism energy-absorbing, generated kinetic energy when two-stage being divided to absorb collision；
When being collided, the pulling force that safety belt generates passes through the axis of traction of U-shaped piece of pulling movable pulley mechanism, axis of traction drive
Dynamic movable pulley forward slip on the third sliding slot of main body rack, movable pulley pull the bee of first order energy absorber by leash
Nest frame moves forward, and then the compressional axis of first order energy absorber moves forward the compression blocks for squeezing first order energy absorber, the
The compression blocks of level-one energy absorber squeeze the honeycomb box of first order energy absorber, and then squeeze the honeycomb of first order energy absorber；
When compressing force suffered by the first order energy absorber is more than the initial peak value load of second level energy absorber, movable pulley
The frame of second level energy absorber is pulled to move forward by leash, then the compression axial advancement of second level energy absorber
The dynamic compression blocks for squeezing second level energy absorber, the compression blocks of second level energy absorber squeeze the honeycomb of second level energy absorber
Box, and then squeeze the honeycomb of second level energy absorber；
When the honeycomb of second level energy absorber starts plastic deformation, first order energy absorber and second level energy absorber are simultaneously
Energy-absorbing is participated in, after first order energy absorber reaches the densification stage, the honeycomb of second level energy absorber continues to be plastically deformed, with
The further progress of compression, second level energy absorber reaches densification.
In conjunction with shown in Fig. 1 to Fig. 8, a kind of negative poisson's ratio honeycomb shock resistance energy absorption device of speed adaptive, including installation
Main body rack on children's seat, the first order energy absorber being slidably mounted on main body rack and second level energy-absorbing machine
Structure, the movable pulley mechanism being slidably mounted on main body rack bypass the leash of movable pulley, safety belt.Main body rack is fixed
On children's seat, first order energy absorber and second level energy absorber can be slided with respect to main body rack, and movable pulley can phase
Main body rack is slided.One end of leash is connected on first order energy absorber, and the other end of leash is connected to the second level
On energy absorber, safety belt is connected on movable pulley mechanism, and the initial peak value load of first order energy absorber is inhaled less than the second level
The initial peak value load of energy mechanism.
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, main body rack includes symmetrically arranged two pieces of support plates, connecting plate, symmetrically sets
Two struts set.The structure of two pieces of support plates is the same and is symmetrical, and the structure of two struts is the same and is phase
Symmetrically.The side of connecting plate is connect with the end of two pieces of support plates, and the other side of connecting plate is connect with the end of two struts, branch
The both sides of plate and strut separation connecting plate.Support plate is equipped with for the first sliding groove of first order energy absorber sliding and for second
The second sliding slot of grade energy absorber sliding, strut are equipped with the third sliding slot for movable pulley sliding.
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3, Fig. 5, first order energy absorber and second level energy absorber include compressional axis, set
Compression blocks on compressional axis, two open honeycomb boxes, honeycomb, frame.Cellular one end is placed in a honeycomb box,
The cellular other end is placed in another honeycomb box, and two honeycomb boxes are covered each by cellular both ends.The honeycomb box of back pastes
Compression blocks, honeycomb box in front is connected on connecting plate, and compressional axis is mounted on frame, after compressional axis is located at frame
End, compressional axis are located at the back of honeycomb box.Support plate and connecting plate are located at the inside of frame, and honeycomb box, honeycomb, compression blocks are placed in
In the interior zone that support plate and connecting plate surround, support plate and connecting plate are placed in the inside of frame from top to bottom, viewed from above,
Support plate and connecting plate are positioned at the inside of frame.The compressional axis of first order energy absorber passes through the first sliding groove and can be the
It is slided on one sliding slot, the compressional axis of second level energy absorber passes through second sliding slot and can be slided in second sliding slot.Leash
One end be connected on the frame of first order energy absorber, leash bypass movable pulley after, the other end of leash is connected to
On the frame of second level energy absorber.
Frame is equipped with connecting rod, and two ends of leash are connected in the connecting rod of two frames.
Movable pulley mechanism includes the axis of traction across third sliding slot, and the bearing being sleeved on axis of traction is sleeved on bearing
Movable pulley, U-shaped piece be sleeved on axis of traction；Movable pulley is placed in U-shaped piece of inside, and safety belt is connected on U-shaped piece.
Compressional axis is equipped with split washer, and split washer is located at the outside of frame.Split washer also is provided on axis of traction,
Split washer is located at the outside of strut.
Compression blocks include integrally formed compression plate and with holes piece, and one of honeycomb box is close to compression plate, compressional axis
Across with holes piece.
Energy absorption device further includes fixing axle, and the fixing axle of two pieces of support plates is passed through to be mounted on children's seat.
The honeycomb of first order energy absorber and the honeycomb of second level energy absorber are by the cellular with Negative poisson's ratio
The cross sectional shape of composition, cellular is indent hexagon.Cellular is in the tubular shape of strip, and then multiple cellular compositions are together
Honeycomb, honeycomb are existing technologies.When the cross sectional shape of cellular is indent hexagon, i.e., cellular has Negative poisson's ratio, this
When squeezing honeycomb, honeycomb is recessed inwardly sample.When using smaller force compresses honeycomb when, honeycomb will not compressive deformation, with
The increase for strength, when power reaches a certain level, honeycomb starts compressive deformation, which is known as initial spike load
Lotus, after honeycomb starts compressive deformation, as shown in fig. 6, the load that is subject to of honeycomb can rapid decrease be to a certain extent in a short time.
Honeycomb is thicker, and initial peak value load is bigger, and initial peak value load should not be too large, and otherwise the brain of people can can't stand.
The cellular thickness of first order energy absorber is less than the cellular thickness of second level energy absorber, first order energy-absorbing machine
The angle of the cellular of structure is less than the angle of the cellular of second level energy absorber.As shown in Figure 7 and Figure 8, cellular thickness is to manage
The pipe thickness of the cellular of shape shape, for the angle of cellular as shown in figure 8, α is the angle of cellular, the definition of cellular angle is industry
It is interior well known.
The principle of energy absorption device is described as follows below：When automobile is when colliding, children since inertia can turn forward,
Safety belt can move forward, and the pulling force that safety belt generates drives movable pulley to be slided in third by U-shaped piece of pulling axis of traction, axis of traction
Forward slip on slot, movable pulley move forward, then pull frame to move forward by leash, then compressional axis is in sliding slot
It is moved forward in (the first sliding groove and second sliding slot), to which compression blocks squeeze the honeycomb box of back, and then honeycomb is squeezed, to real
Show the compression of first order energy absorber and second level energy absorber, generates energy-absorbing.First order energy absorber and second level energy-absorbing
Mechanism is upper and lower layered arrangement.Inconsistent due to upper layer and lower layer honeycomb thickness, energy-absorbing will be first in relatively thin honeycomb (
Level-one energy absorber) start, with the progress of compression, the compressive load suffered by relatively thin honeycomb has been more than another thicker honeycomb
When the initial peak value load of (second level energy absorber), thicker honeycomb will also begin participating in compressive deformation, i.e., at this point, relatively thin
Honeycomb and thicker honeycomb cooperatively participate in compressive deformation.The energy-absorbing of the total of this energy absorption device has impact velocity certainly
Adaptability, opposite existing structure have better child passenger protective value.
In collision, energy-absorbing starts in relatively thin honeycomb first, and the relatively thick honeycomb of relatively thin honeycomb has lower
Initial peak value load, so as to effectively reduce load when colliding initial, and thicker honeycomb, only when impact velocity compared with
Greatly, when the compressing force that relatively thin honeycomb is subject to is more than thicker cellular initial peak value load, thicker honeycomb can just participate in deforming
Energy-absorbing.Exactly above-mentioned characteristic is utilized to realize the continuously and automatically regulatory function of endergonic process by this energy absorption device, reach
Reduce the effect of continuous energy-absorbing while initial spike power, and can adaptive different impact velocity, energy-absorbing is with respect to single layer
Honeycomb energy-absorbing has better effect.
This energy absorption device can do deformation design appropriate, if energy absorption device includes main body rack, be slidably mounted at master
First order energy absorber on body support frame and second level energy absorber, leash.First energy absorber is located at the second energy absorber
Lower section, one end of leash is connected on the frame of first order energy absorber, and the other end of leash is connected to the second level
On the frame of energy absorber, the initial peak value load of first order energy absorber is carried less than the initial spike of second level energy absorber
Lotus.Movable pulley is substituted with the part of axis class, then safety belt is directly connected on axial workpiece, which can also be in master
Straight reciprocating motion on body support frame.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, it is characterised in that：Use negative poisson's ratio honeycomb
Twin-stage energy absorber energy-absorbing, generated kinetic energy when two-stage being divided to absorb collision；
When being collided, by the axis of traction of U-shaped piece of pulling movable pulley mechanism, axis of traction drives dynamic the pulling force that safety belt generates
Pulley forward slip on the third sliding slot of main body rack, movable pulley pull the frame of first order energy absorber by leash
It moves forward, then the compressional axis of first order energy absorber moves forward the compression blocks for squeezing first order energy absorber, the first order
The compression blocks of energy absorber squeeze the honeycomb box of first order energy absorber, and then squeeze the honeycomb of first order energy absorber；
When compressing force suffered by the first order energy absorber is more than the initial peak value load of second level energy absorber, movable pulley passes through
Leash pulls the frame of second level energy absorber to move forward, and then the compressional axis of second level energy absorber, which moves forward, squeezes
The compression blocks of second level energy absorber, the compression blocks of second level energy absorber are pressed to squeeze the honeycomb box of second level energy absorber, into
And squeeze the honeycomb of second level energy absorber；
When the honeycomb of second level energy absorber starts plastic deformation, first order energy absorber and second level energy absorber simultaneously participate in
Energy-absorbing, after first order energy absorber reaches the densification stage, the honeycomb of second level energy absorber continues to be plastically deformed, with pressure
The progress of contracting, second level energy absorber reach densification.
2. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive described in accordance with the claim 1, feature exist
In：Main body rack includes symmetrically arranged two pieces of support plates, connecting plate, symmetrically arranged two struts；The side of connecting plate and two
The end of block support plate connects, and the other side of connecting plate is connect with the end of two struts, and support plate, which is equipped with, is used for first order energy-absorbing
The first sliding groove of mechanism slips and the second sliding slot slided for second level energy absorber, strut is equipped with to be slided for movable pulley
Third sliding slot.
3. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, feature exist according to claim 2
In：First order energy absorber and second level energy absorber include compressional axis, the compression blocks being sleeved on compressional axis, two openings
Honeycomb box, honeycomb, frame；Cellular one end is placed in a honeycomb box, and the cellular other end is placed in another honeycomb box
Interior, one of honeycomb box is connected to close to compression blocks, another honeycomb box on connecting plate, and compressional axis is mounted on frame
On, support plate and connecting plate are located at the inside of frame；The compressional axis of first order energy absorber passes through the first sliding groove, second level energy-absorbing
The compressional axis of mechanism passes through second sliding slot, one end of leash to be connected on the frame of first order energy absorber, leash
The other end is connected on the frame of second level energy absorber.
4. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive described in accordance with the claim 3, feature exist
In：Frame is equipped with connecting rod, and the end of leash is connected in connecting rod.
5. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, feature exist according to claim 2
In：Movable pulley mechanism includes the axis of traction across third sliding slot, the bearing being sleeved on axis of traction, the dynamic cunning being sleeved on bearing
Wheel, U-shaped piece be sleeved on axis of traction；Safety belt is connected on U-shaped piece.
6. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive described in accordance with the claim 3, feature exist
In：Compressional axis is equipped with split washer, and split washer is located at the outside of frame.
7. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive described in accordance with the claim 3, feature exist
In：Compression blocks include integrally formed compression plate and with holes piece, and one of honeycomb box is close to compression plate, and compressional axis passes through band
Hole block.
8. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive, feature exist according to claim 2
In：Energy absorption device further includes fixing axle, and the fixing axle of two pieces of support plates is passed through to be mounted on children's seat.
9. a kind of negative poisson's ratio honeycomb shock resistance energy-absorbing method of speed adaptive described in accordance with the claim 1, feature exist
In：The honeycomb of first order energy absorber and the honeycomb of second level energy absorber are made of the cellular with Negative poisson's ratio,
The cross sectional shape of cellular is indent hexagon.
10. a kind of negative poisson's ratio honeycomb shock resistance energy absorption device of speed adaptive, it is characterised in that：It is sliding including main body rack
Dynamic formula is mounted on first order energy absorber and second level energy absorber on main body rack, leash；First energy absorber is located at
One end of the lower section of second energy absorber, leash is connected on the frame of first order energy absorber, the other end of leash
It is connected on the frame of second level energy absorber, the initial peak value load of first order energy absorber is less than second level energy absorber
Initial peak value load.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194571.1A CN108297745A (en) | 2018-03-09 | 2018-03-09 | A kind of the negative poisson's ratio honeycomb shock resistance energy-absorbing method and device of speed adaptive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194571.1A CN108297745A (en) | 2018-03-09 | 2018-03-09 | A kind of the negative poisson's ratio honeycomb shock resistance energy-absorbing method and device of speed adaptive |
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| CN108297745A true CN108297745A (en) | 2018-07-20 |
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| CN201810194571.1A Pending CN108297745A (en) | 2018-03-09 | 2018-03-09 | A kind of the negative poisson's ratio honeycomb shock resistance energy-absorbing method and device of speed adaptive |
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| CN112253681A (en) * | 2020-09-22 | 2021-01-22 | 江苏科技大学 | Tension-compression type energy-absorbing buffering device |
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Application publication date: 20180720 |