CN106945622B - A kind of vehicle bumper - Google Patents
A kind of vehicle bumper Download PDFInfo
- Publication number
- CN106945622B CN106945622B CN201710216349.2A CN201710216349A CN106945622B CN 106945622 B CN106945622 B CN 106945622B CN 201710216349 A CN201710216349 A CN 201710216349A CN 106945622 B CN106945622 B CN 106945622B
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- China
- Prior art keywords
- stf
- encapsulated layer
- end cap
- link structure
- vehicle bumper
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
This application discloses a kind of vehicle bumpers; including encapsulated layer, mounting plate, fixed ring, forward bar, reverse bar, short shaft, long shaft, T-shaped slider, guide rail, fastening screw, STF, end cap, collision prevention girders support frame and shearing enhancing device; has the characteristics that buffer protection superior performance; it can be widely applied to the collision protection field of vehicle, reduce casualties rate and property loss；By the way that STF and multi-link structure are combined, the good energy absorption characteristics that STF itself has not only are utilized, and utilize the kinetic characteristic of multi-link structure, when impacting generation, the participation energy consumption process of other STF around being able to drive, the utilization efficiency of STF is improved, so that the energy absorbing efficiency of STF greatly improves；STF has sensitive rapidly reaction to shear strain rate, enables bumper to make highly energy-consuming reaction in moment when being impacted, improves the protective performance of structure, also reduce the complexity of total.
Description
Technical field
The invention belongs to technical field of automobile parts, and in particular to a kind of vehicle bumper.
Background technique
Bumper is the safety device for absorbing and slowing down foreign impacts power, protect vehicle body front and rear part, existing automobile
Bumper, the generally arc shell structure made of steel plate punched absorb collision energy by the deformation of metal in collision, with
Guarantee occupant's safety.But existing bumper leans on the deformation of shell only to absorb consumption collision energy, buffering energy-absorbing effect
It is not satisfactory, it is difficult to impact force amplitude be preferably minimized, largely reduced the safety of running car.
The present invention is a kind of New-safety bumper structure combined using multi-link structure and STF liquid, and STF liquid is one
Kind novel intelligent material, this material are nano granule suspension body, it is very easy to deformation at low shear rates, can be as liquid
Body equally slowly flows；The generation of its apparent viscosity significantly increases and becomes viscous when by shock loading, or even is turned by liquid
Turn to class solid-state；It can restore liquid rapidly again after impact revocation, there is fast response time, good reversibility, energy absorbing efficiency height etc.
Advantage.When by external impact, driving link starts multi-link structure because obtaining energy, so as to cause entire hinged parallel four
The movement of side shape structure, i.e., it is so-called ' pulling one hair and move the whole body '.The technical program combines the two, not only sharp
The good energy absorption characteristics having with STF liquid itself, and using the kinetic characteristic of multi-link structure, when impacting generation,
It is able to drive almost all STF liquid in container and simultaneously participates in energy consumption process, energy absorption efficiency is greatly improved.The insurance
Bumper structure is at low cost, light weight, environmental-friendly, reusable, before having wide application in the collision protection field of vehicle
Scape.
Summary of the invention
The technical issues of solution: the technical issues of the application solves is that prior art bumper buffering energy-absorbing effect is poor, pacifies
The technical problems such as full property is low, in order to make up for the deficiencies of the prior art, the present invention is intended to provide a kind of New-safety bumper structure, the guarantor
Dangerous bumper structure can make a response automatically to outside world and threat, while increase substantially the energy absorption efficiency of STF, have
Structure is simple, light-weight, maintenance is simple, buffers the features such as high-efficient.
Technical solution: a kind of vehicle bumper, including encapsulated layer, mounting plate, fixed ring, forward bar, reverse bar, short turn
Axis, long shaft, T-shaped slider, guide rail, fastening screw, STF, end cap, collision prevention girders support frame and shearing enhancing device, the envelope
Dress layer is the metal component that one end is not closed, inside is cavity；End cap is nested on the inside of the not closed one end of encapsulated layer；Collision prevention girders
Support is erected on the outer surface of encapsulated layer；The mounting plate outer end face is connected by fastening screw with the inner surface of encapsulated layer
It connects；Fixed ring and guide rail are fixedly mounted on the inner face of mounting plate；The guide rail side is equipped with T section notch, notch
Inside it is disposed with one group of T-shaped slider；The shearing enhancing device is located in T-shaped slider, and the shearing enhancing device is multi link knot
Structure, the forward bar being parallel to each other by one group and one group of reverse bar being parallel to each other form；The multi-link structure passes through long shaft
It is connected with T-shaped slider, forward bar intersects with reverse bar, and forward bar is connected with reverse bar intersection by short shaft, the STF filling
Inside encapsulated layer.
As a preferred technical solution of the present invention: the multi-link structure divides three layer arrangements on a mounting board, and three layers
Structure is interspersed from top to bottom；
As a preferred technical solution of the present invention: when the multi-link structure is compressed to maximum displacement and encapsulated layer
Closed end and end cap are not touched.
As a preferred technical solution of the present invention: the guide rail both ends are equipped with capping.
As a preferred technical solution of the present invention: the end cap outer end face is equipped with groove, and encapsulated layer passes through with end cap
Fastening screw is fixedly connected；Sealing ring is equipped between encapsulated layer and end cap.
As a preferred technical solution of the present invention: the STF is made of nano SiO 2 particle and PEG200,
Wherein the volume fraction of nano SiO 2 particle is 28%.
As a preferred technical solution of the present invention: the collision prevention girders support frame is connected with the front longitudinal beam of car body.
The utility model has the advantages that 1. are acted synergistically using multi-link structures and STF, fast response time can achieve, good reversibility,
Energy absorbing efficiency is high, infrastructure cost is low, light weight, it is environmental-friendly, reusable the advantages that.
2. having the characteristics that buffer protection superior performance, the collision protection field of vehicle can be widely applied to, reduce personnel
Casualty rate and property loss.
3. STF compared with other equal quality materials, impact resistance is stronger in terms of shock resistance and energy-absorbing, can absorb
Energy it is more.
4. multi-link structure is upper there are many selection in material, size, quantity and structure arrangement, different structure can satisfy
The demand of bumper.Key point is that this class formation can make the STF in encapsulating structure all simultaneously participate in local small range
Interior impact.
5. the good energy absorption characteristics that STF itself has not only are utilized by combining STF and multi-link structure, and
And using the kinetic characteristic of multi-link structure, when impacting generation, it is able to drive the participation energy consumption process of other STF of surrounding, is mentioned
The high utilization efficiency of STF, so that the energy absorbing efficiency of STF greatly improves.
6. STF has sensitive rapidly reaction to shear strain rate, enable bumper when being impacted in wink
Between make highly energy-consuming reaction, improve the protective performance of structure, also reduce the complexity of total.
7. traditional vehicle bumper structure mostly uses greatly homogenous material, and the present invention is tied using multi-link structure with STF phase
A kind of intelligent protection material closed, substantially increases the buffering efficiency of bumper.
Detailed description of the invention
Fig. 1 is the application bumper schematic diagram.
Fig. 2 is the application bumper cross-sectional view.
Fig. 3 is the axonometric projection graph that multi-link structure is arranged in the application bumper body.
Fig. 4 is the axonometric projection graph of the application multi link motion structure.
Description of symbols: 1, encapsulated layer, 2, mounting plate, 3, fixed ring, 41, forward bar, 42, reverse bar, 5, short shaft,
6, long shaft, 7, T-shaped slider, 8, guide rail, 9, fastening screw, 10, capping, 11, STF, 12, end cap, 13, sealing ring, 14, anticollision
Beam support frame.
Specific embodiment
The specific embodiment of the application is described in further detail with reference to the accompanying drawings of the specification.Following embodiment
It will be helpful to those skilled in the art and further understand the application, but do not limit the application in any form.It should be understood that
Be, to those skilled in the art, without departing from the concept of this application, can also make it is several deformation and
It improves.These belong to the protection scope of the application.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of vehicle bumper, including it is encapsulated layer 1, mounting plate 2, fixed ring 3, suitable
To bar 41, reverse bar 42, short shaft 5, long shaft 6, T-shaped slider 7, guide rail 8, fastening screw 9, capping 10, STF11, end cap 12,
Sealing ring 13, collision prevention girders support frame 14 and shearing enhancing device, the STF11 are stirred by nano SiO 2 particle and PEG200
It mixes, the micro-pore diameter of the silica nano material is in 180nm；The encapsulated layer 1 is that one end is not closed, is internal
For the metal component of cavity, STF11 is filled inside encapsulated layer 1；End cap 12 is nested on the inside of the not closed one end of encapsulated layer 1；It is anti-
Beam support frame 14 is hit to be located on the outer surface of encapsulated layer 1；2 outer end face of mounting plate passes through fastening screw 9 and encapsulated layer 1
Inner surface is connected；The inner face of mounting plate 2 is fixedly installed with fixed ring 3 and guide rail 8；8 side of guide rail is cut equipped with T shape
Face notch is disposed with one group of T-shaped slider 7 in notch；The shearing enhancing device is located in T-shaped slider 7, the shearing synergy dress
It is set to multi-link structure, the forward bar 41 being parallel to each other by one group and one group of reverse bar 42 being parallel to each other form；It is described to connect more
Rod structure is connected by long shaft 6 with T-shaped slider 7, for guiding the movement of multi-link structure planar, forward bar 41 with it is inverse
Intersect to bar 42, forward bar 41 and 42 intersection of reverse bar are connected by short shaft 5, wherein forward bar 41, reverse bar 42 and short turn
Axis 5 forms revolute pair, and T-shaped slider and long shaft 6 form prismatic pair.
On a mounting board, three-decker is interspersed three layer arrangements of the multi-link structure point from top to bottom；It is described to connect more
It is not touched when rod structure is compressed to maximum displacement with the closed end of encapsulated layer 1 and end cap 12.
When the outermost any hinge joint of multi-link structure 3 obtains displacement because of collision, due to each connecting rod intersection by
Shaft connection, therefore will drive all rod pieces in plane and move in a circle around the shaft, T-shaped slider 7 is in guide rail 8 along straight line at this time
Movement drives more system of bars to change longitudinal overall dimensions.Multi-link structure 3 has the function of integral telescopic as a result, and structure is steady
Gu easy for installation.
12 outer end face of end cap is equipped with groove, and encapsulated layer 1 is fixedly connected with end cap 12 by fastening screw 9；Encapsulated layer 1
It is equipped with sealing ring 13 between end cap 12, to prevent the STF in cavity from leaking out, is disposed with capping 10 at 8 both ends of guide rail, two
To connect between person, cooperated using slight interference.It can prevent T-type sliding block from skidding off from guide rail.
STF11 is made of nano SiO 2 particle and PEG200, and wherein the volume fraction of nano particle is 28%, system
Standby process is as follows: taking PEG200 to be put into the ball grinder of planetary ball mill, planet is added batch-wise in nano SiO 2 particle
It is ground in formula ball mill, until reaching volume fraction is 28%, grinding after grinding, carries out mixing sample to vacuumize place
Reason, obtains STF；The collision prevention girders support frame 14 is connected with the front longitudinal beam of car body.
Intelligent protection structure working principle described herein:
Such as Fig. 1 and Fig. 2, when the bumper collides, collision so that the thin-wall construction in 1 outside of encapsulated layer
Point of impingement because of metal on the outside of point of impingement stress, structure is plastically deformed and is recessed, and the STF11 around pit is driven to participate in work
Make, absorbs portion of energy.Simultaneously as the deformation on the outside of encapsulated layer, any hinge joint of multi-link structure outermost layer becomes because of outside
Shape and generate displacement, drive more system of bars planar to move, so that multi-link structure has the function of integral telescopic, thus band
Wider STF participates in energy consumption process around dynamic.Just because of the introducing of multi-link structure, the utilization efficiency of STF is improved, is made
The energy absorption for obtaining STF greatly improves.Meanwhile the arranging multiplayer link mechanism on bumper height direction, it can be further
Guarantee to guarantee that periphery STF participates in energy consumption process as far as possible when different location generates collision, promote the protective of bumper
Energy.
Have the characteristics that buffer protection superior performance, can be widely applied to the collision protection field of vehicle, reduces personnel's wound
Die rate and property loss.STF is compared with other equal quality materials, impact resistance is stronger, energy in terms of shock resistance and energy-absorbing
The energy of absorption is more；Multi-link structure is upper there are many selection in material, size, quantity and structure arrangement, can satisfy difference
The demand of structural bumper, it is small that key point is that this class formation can make the STF in encapsulating structure all simultaneously participate in part
Impact in range；By combining STF and multi-link structure, the good energy-absorbing that STF itself has not only is utilized
Characteristic, and using the kinetic characteristic of multi-link structure, when impacting generation, it is able to drive the participation energy consumption of other STF of surrounding
Process improves the utilization efficiency of STF, so that the energy absorbing efficiency of STF greatly improves；STF has sensitivity to shear strain rate
Rapidly reaction enables bumper to make highly energy-consuming reaction in moment when being impacted, improves the protective performance of structure,
Also reduce the complexity of total；Traditional vehicle bumper structure mostly uses greatly homogenous material, and the present invention using connecting more
A kind of intelligent protection material that rod structure and STF are combined, substantially increases the buffering efficiency of bumper.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of vehicle bumper, including it is encapsulated layer 1, mounting plate 2, fixed ring 3, suitable
To bar 41, reverse bar 42, short shaft 5, long shaft 6, T-shaped slider 7, guide rail 8, fastening screw 9, capping 10, STF11, end cap 12,
Sealing ring 13, collision prevention girders support frame 14 and shearing enhancing device, the STF11 are stirred by nano SiO 2 particle and PEG200
It mixes, the micro-pore diameter of the silica nano material is in 220nm；The encapsulated layer 1 is that one end is not closed, is internal
For the metal component of cavity, STF11 is filled inside encapsulated layer 1；End cap 12 is nested on the inside of the not closed one end of encapsulated layer 1；It is anti-
Beam support frame 14 is hit to be located on the outer surface of encapsulated layer 1；2 outer end face of mounting plate passes through fastening screw 9 and encapsulated layer 1
Inner surface is connected；The inner face of mounting plate 2 is fixedly installed with fixed ring 3 and guide rail 8；8 side of guide rail is cut equipped with T shape
Face notch is disposed with one group of T-shaped slider 7 in notch；The shearing enhancing device is located in T-shaped slider 7, the shearing synergy dress
It is set to multi-link structure, the forward bar 41 being parallel to each other by one group and one group of reverse bar 42 being parallel to each other form；It is described to connect more
Rod structure is connected by long shaft 6 with T-shaped slider 7, for guiding the movement of multi-link structure planar, forward bar 41 with it is inverse
Intersect to bar 42, forward bar 41 and 42 intersection of reverse bar are connected by short shaft 5, wherein forward bar 41, reverse bar 42 and short turn
Axis 5 forms revolute pair, and T-shaped slider and long shaft 6 form prismatic pair.
On a mounting board, three-decker is interspersed three layer arrangements of the multi-link structure point from top to bottom；It is described to connect more
It is not touched when rod structure is compressed to maximum displacement with the closed end of encapsulated layer 1 and end cap 12.
When the outermost any hinge joint of multi-link structure 3 obtains displacement because of collision, due to each connecting rod intersection by
Shaft connection, therefore will drive all rod pieces in plane and move in a circle around the shaft, T-shaped slider 7 is in guide rail 8 along straight line at this time
Movement drives more system of bars to change longitudinal overall dimensions.Multi-link structure 3 has the function of integral telescopic as a result, and structure is steady
Gu easy for installation.
12 outer end face of end cap is equipped with groove, and encapsulated layer 1 is fixedly connected with end cap 12 by fastening screw 9；Encapsulated layer 1
It is equipped with sealing ring 13 between end cap 12, to prevent the STF in cavity from leaking out, is disposed with capping 10 at 8 both ends of guide rail, two
To connect between person, cooperated using slight interference.It can prevent T-type sliding block from skidding off from guide rail.
STF11 is made of nano SiO 2 particle and PEG200, and wherein the volume fraction of nano particle is 28%, system
Standby process is as follows: taking PEG200 to be put into the ball grinder of planetary ball mill, planet is added batch-wise in nano SiO 2 particle
It is ground in formula ball mill, until reaching volume fraction is 28%, grinding after grinding, carries out mixing sample to vacuumize place
Reason, obtains STF；The collision prevention girders support frame 14 is connected with the front longitudinal beam of car body.
Intelligent protection structure working principle described herein:
Such as Fig. 1 and Fig. 2, when the bumper collides, collision so that the thin-wall construction in 1 outside of encapsulated layer
Point of impingement because of metal on the outside of point of impingement stress, structure is plastically deformed and is recessed, and the STF11 around pit is driven to participate in work
Make, absorbs portion of energy.Simultaneously as the deformation on the outside of encapsulated layer, any hinge joint of multi-link structure outermost layer becomes because of outside
Shape and generate displacement, drive more system of bars planar to move, so that multi-link structure has the function of integral telescopic, thus band
Wider STF participates in energy consumption process around dynamic.Just because of the introducing of multi-link structure, the utilization efficiency of STF is improved, is made
The energy absorption for obtaining STF greatly improves.Meanwhile the arranging multiplayer link mechanism on bumper height direction, it can be further
Guarantee to guarantee that periphery STF participates in energy consumption process as far as possible when different location generates collision, promote the protective of bumper
Energy.
Have the characteristics that buffer protection superior performance, can be widely applied to the collision protection field of vehicle, reduces personnel's wound
Die rate and property loss.STF is compared with other equal quality materials, impact resistance is stronger, energy in terms of shock resistance and energy-absorbing
The energy of absorption is more；Multi-link structure is upper there are many selection in material, size, quantity and structure arrangement, can satisfy difference
The demand of structural bumper, it is small that key point is that this class formation can make the STF in encapsulating structure all simultaneously participate in part
Impact in range；By combining STF and multi-link structure, the good energy-absorbing that STF itself has not only is utilized
Characteristic, and using the kinetic characteristic of multi-link structure, when impacting generation, it is able to drive the participation energy consumption of other STF of surrounding
Process improves the utilization efficiency of STF, so that the energy absorbing efficiency of STF greatly improves；STF has sensitivity to shear strain rate
Rapidly reaction enables bumper to make highly energy-consuming reaction in moment when being impacted, improves the protective performance of structure,
Also reduce the complexity of total；Traditional vehicle bumper structure mostly uses greatly homogenous material, and the present invention using connecting more
A kind of intelligent protection material that rod structure and STF are combined, substantially increases the buffering efficiency of bumper.
Embodiment 3
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of vehicle bumper, including it is encapsulated layer 1, mounting plate 2, fixed ring 3, suitable
To bar 41, reverse bar 42, short shaft 5, long shaft 6, T-shaped slider 7, guide rail 8, fastening screw 9, capping 10, STF11, end cap 12,
Collision prevention girders support frame 14 and shearing enhancing device, the STF11 are stirred by nano SiO 2 particle and PEG200,
The micro-pore diameter of the silica nano material is in 200nm；The encapsulated layer 1 is that one end is not closed, inside is cavity
Metal component fills STF11 inside encapsulated layer 1；End cap 12 is nested on the inside of the not closed one end of encapsulated layer 1；Collision prevention girders support
Frame 14 is located on the outer surface of encapsulated layer 1；2 outer end face of mounting plate passes through the inner surface phase of fastening screw 9 and encapsulated layer 1
Connection；The inner face of mounting plate 2 is fixedly installed with fixed ring 3 and guide rail 8；8 side of guide rail is equipped with T section notch,
One group of T-shaped slider 7 is disposed in notch；The shearing enhancing device is located in T-shaped slider 7, and the shearing enhancing device is more
Link mechanism, the forward bar 41 being parallel to each other by one group and one group of reverse bar 42 being parallel to each other form；The multi-link structure
It is connected by long shaft 6 with T-shaped slider 7, for guiding the movement of multi-link structure planar, forward bar 41 and reverse bar 42
Intersection, forward bar 41 and 42 intersection of reverse bar are connected by short shaft 5, wherein forward bar 41, reverse bar 42 and the formation of short shaft 5
Revolute pair, T-shaped slider and long shaft 6 form prismatic pair.
On a mounting board, three-decker is interspersed three layer arrangements of the multi-link structure point from top to bottom；It is described to connect more
It is not touched when rod structure is compressed to maximum displacement with the closed end of encapsulated layer 1 and end cap 12.
When the outermost any hinge joint of multi-link structure 3 obtains displacement because of collision, due to each connecting rod intersection by
Shaft connection, therefore will drive all rod pieces in plane and move in a circle around the shaft, T-shaped slider 7 is in guide rail 8 along straight line at this time
Movement drives more system of bars to change longitudinal overall dimensions.Multi-link structure 3 has the function of integral telescopic as a result, and structure is steady
Gu easy for installation.
12 outer end face of end cap is equipped with groove, and encapsulated layer 1 is fixedly connected with end cap 12 by fastening screw 9；Encapsulated layer 1
It is equipped with sealing ring 13 between end cap 12, to prevent the STF in cavity from leaking out, is disposed with capping 10 at 8 both ends of guide rail, two
To connect between person, cooperated using slight interference.It can prevent T-type sliding block from skidding off from guide rail.
STF11 is made of nano SiO 2 particle and PEG200, and wherein the volume fraction of nano particle is 28%, system
Standby process is as follows: taking PEG200 to be put into the ball grinder of planetary ball mill, planet is added batch-wise in nano SiO 2 particle
It is ground in formula ball mill, until reaching volume fraction is 28%, grinding after grinding, carries out mixing sample to vacuumize place
Reason, obtains STF；The collision prevention girders support frame 14 is connected with the front longitudinal beam of car body.
Intelligent protection structure working principle described herein:
Such as Fig. 1 and Fig. 2, when the bumper collides, collision so that the thin-wall construction in 1 outside of encapsulated layer
Point of impingement because of metal on the outside of point of impingement stress, structure is plastically deformed and is recessed, and the STF11 around pit is driven to participate in work
Make, absorbs portion of energy.Simultaneously as the deformation on the outside of encapsulated layer, any hinge joint of multi-link structure outermost layer becomes because of outside
Shape and generate displacement, drive more system of bars planar to move, so that multi-link structure has the function of integral telescopic, thus band
Wider STF participates in energy consumption process around dynamic.Just because of the introducing of multi-link structure, the utilization efficiency of STF is improved, is made
The energy absorption for obtaining STF greatly improves.Meanwhile the arranging multiplayer link mechanism on bumper height direction, it can be further
Guarantee to guarantee that periphery STF participates in energy consumption process as far as possible when different location generates collision, promote the protective of bumper
Energy.
Have the characteristics that buffer protection superior performance, can be widely applied to the collision protection field of vehicle, reduces personnel's wound
Die rate and property loss.STF is compared with other equal quality materials, impact resistance is stronger, energy in terms of shock resistance and energy-absorbing
The energy of absorption is more；Multi-link structure is upper there are many selection in material, size, quantity and structure arrangement, can satisfy difference
The demand of structural bumper, it is small that key point is that this class formation can make the STF in encapsulating structure all simultaneously participate in part
Impact in range；By combining STF and multi-link structure, the good energy-absorbing that STF itself has not only is utilized
Characteristic, and using the kinetic characteristic of multi-link structure, when impacting generation, it is able to drive the participation energy consumption of other STF of surrounding
Process improves the utilization efficiency of STF, so that the energy absorbing efficiency of STF greatly improves；STF has sensitivity to shear strain rate
Rapidly reaction enables bumper to make highly energy-consuming reaction in moment when being impacted, improves the protective performance of structure,
Also reduce the complexity of total；Traditional vehicle bumper structure mostly uses greatly homogenous material, and the present invention using connecting more
A kind of intelligent protection material that rod structure and STF are combined, substantially increases the buffering efficiency of bumper.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
The specific embodiment of the application is described above.It is to be appreciated that the application be not limited to it is above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the application.
Claims (7)
1. a kind of vehicle bumper, it is characterised in that: including encapsulated layer (1), mounting plate (2), fixed ring (3), short shaft (5),
Long shaft (6), T-shaped slider (7), guide rail (8), fastening screw (9), STF(11), end cap (12), collision prevention girders support frame (14) and
Enhancing device is sheared, the encapsulated layer (1) is the metal component that one end is not closed, inside is cavity；End cap (12) is nested with
On the inside of the not closed one end of encapsulated layer (1)；Collision prevention girders support frame (14) is located on the outer surface of encapsulated layer (1)；The installation
Plate (2) outer end face is connected by fastening screw (9) with the inner surface of encapsulated layer (1)；Fixed ring (3) and the fixed peace of guide rail (8)
On the inner face of mounting plate (2)；Guide rail (8) side is equipped with T section notch, is disposed with one group of T shape in notch
Sliding block (7)；The shearing enhancing device is located on T-shaped slider (7), and the shearing enhancing device is multi-link structure, by one group
The forward bar (41) being parallel to each other and one group of reverse bar (42) composition being parallel to each other；The multi-link structure passes through long shaft
(6) be connected with T-shaped slider (7), forward bar (41) intersects with reverse bar (42), forward bar (41) and reverse bar (42) intersection by
Short shaft (5) connection, the STF(11) it is filled in encapsulated layer (1) inside.
2. vehicle bumper according to claim 1, it is characterised in that: three layer arrangements of the multi-link structure point are being installed
On plate, three-decker is interspersed from top to bottom.
3. vehicle bumper according to claim 1, it is characterised in that: when the multi-link structure is compressed to maximum displacement
It is not touched with the closed end of encapsulated layer (1) and end cap (12).
4. vehicle bumper according to claim 1, it is characterised in that: guide rail (8) both ends are equipped with capping
(10).
5. vehicle bumper according to claim 1, it is characterised in that: end cap (12) outer end face is equipped with groove, envelope
Dress layer (1) is fixedly connected with end cap (12) by fastening screw；Sealing ring (13) are equipped between encapsulated layer (1) and end cap (12).
6. vehicle bumper according to claim 1, it is characterised in that: the STF(11) by silica nanometer
Grain and PEG200 composition, wherein the volume fraction of nano SiO 2 particle is 28%.
7. vehicle bumper according to claim 1, it is characterised in that: before the collision prevention girders support frame (14) and car body
Stringer is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710216349.2A CN106945622B (en) | 2017-04-05 | 2017-04-05 | A kind of vehicle bumper |
Applications Claiming Priority (1)
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| CN201710216349.2A CN106945622B (en) | 2017-04-05 | 2017-04-05 | A kind of vehicle bumper |
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| CN106945622A CN106945622A (en) | 2017-07-14 |
| CN106945622B true CN106945622B (en) | 2019-01-29 |
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| CN108909663A (en) * | 2018-07-25 | 2018-11-30 | 吉林大学 | Vehicle and its bumper bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202987032U (en) * | 2012-12-18 | 2013-06-12 | 北京汽车股份有限公司 | Vehicle bumper and vehicle |
| CN104476828A (en) * | 2014-11-28 | 2015-04-01 | 中国科学院力学研究所 | Sandwich energy-absorbing device |
| CN204296626U (en) * | 2014-12-02 | 2015-04-29 | 北京汽车研究总院有限公司 | A kind of bumper/spoiler assembly |
| CN205524086U (en) * | 2016-04-21 | 2016-08-31 | 青岛第二实验初级中学 | On -vehicle safety arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8091692B2 (en) * | 2003-03-03 | 2012-01-10 | Massachusetts Institute Of Technology | Fluid-filled cellular solids for controlled |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202987032U (en) * | 2012-12-18 | 2013-06-12 | 北京汽车股份有限公司 | Vehicle bumper and vehicle |
| CN104476828A (en) * | 2014-11-28 | 2015-04-01 | 中国科学院力学研究所 | Sandwich energy-absorbing device |
| CN204296626U (en) * | 2014-12-02 | 2015-04-29 | 北京汽车研究总院有限公司 | A kind of bumper/spoiler assembly |
| CN205524086U (en) * | 2016-04-21 | 2016-08-31 | 青岛第二实验初级中学 | On -vehicle safety arrangement |
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| CN106945622A (en) | 2017-07-14 |
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