CN206217823U - A kind of bumper energy absorption buffer structure - Google Patents
A kind of bumper energy absorption buffer structure Download PDFInfo
- Publication number
- CN206217823U CN206217823U CN201621234435.3U CN201621234435U CN206217823U CN 206217823 U CN206217823 U CN 206217823U CN 201621234435 U CN201621234435 U CN 201621234435U CN 206217823 U CN206217823 U CN 206217823U
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- China
- Prior art keywords
- energy
- piece
- absorbing
- buffer structure
- bumper
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Abstract
The utility model discloses a kind of bumper energy absorption buffer structure, include successively from inside to outside：The energy-absorbing piece bracket that is fixed on front anticollision beam of automobile, the elastic endergonic piece being entrenched on the energy-absorbing piece bracket, energy-absorbing foam, the exterior skin being fitted on elastic endergonic piece.Energy-absorbing piece bracket of the present utility model has high intensity and rigidity, is unlikely to deform, and is fixed with front anti-collision beam, jointly by the energy transmission of sharp impacts to vehicle rear.Energy-absorbing piece is entrenched in the middle of energy-absorbing piece bracket, with less rigidity and intensity, being capable of deformation and the conquassation backward under smaller collision energy.Fitted on energy-absorbing foam shape it is not deformed before energy-absorbing piece, in collision along middle fragile portion fractures, and can slide to upper and lower both sides, blocked until by energy-absorbing piece bracket.The utility model can increase buffer distance during Vehicle-pedestrian impact, increase energy absorption, so as to reduce the injury to pedestrian.
Description
Technical field
The utility model is related to a kind of energy-absorbing buffering structure of bumper.
Background technology
Automobile when collision energy is smaller, is deformed and filled and process when colliding by car surface bumper covering
Energy absorption, when collision energy is larger, energy absorption device is passed to by automotive front collision prevention girders, and energy absorption device produces crumple to absorb energy
Amount.And pedestrian with collision scenario when energy it is smaller, by Honda vezel 40km/h forward direction crash dummy model (polar)
Result of the test is observed, and the covering such as bumper, hood is deformed, and body structure has no substantially deformation.
So, automotive front end bumper plays the main of pedestrian's protective effect two parts primary structure, and a part is vehicle body
Plastic cladding element, usually by polyurethane（Or other resin materials）And reinforcing material（Glass fiber powder, wollastonite etc.）Reaction
Injection moulding（RIM）Formed, with preferable elasticity and recoverable force ability, moderate finite deformation amount can be produced when colliding.
Another part is filled and process part, typically by expanded polypropylene（EPP）Or other foamed materials（Expanded polystyrene (EPS) EPS, hair
Bubble polythene PE P etc.）Bead it is molded, wherein by taking the best EPP of performance as an example, tried in the pedestrian impact of above-mentioned 40km/h
In testing, there is no obvious plastic deformation.
From the principle done work, when colliding, the deformation quantity of bumper is bigger, and the energy that it absorbs is more.It is existing
Automobile protect pedestrian in terms of generally using between collision prevention girders and Abdeckung Stossfaenger fill energy-absorbing foam, although filled and process
Buffering energy-absorbing performance it is good, but when automobile runs at a low speed, the compression deformation rate of collision rift is small for it, limits plastic bumper
Bigger deformation is produced, it is unfavorable for pedestrian protecting.
In sum, when automobile equipped with general insurance thick stick is with pedestrian collision, it is impossible to produce filled and process larger
Deformation, the energy-absorbing effect of filled and process is not obvious, and pedestrian lower leg acceleration may be caused excessive, and pedestrian is damaged.
Utility model content
The utility model for solving above-mentioned technical problem designs that deformation quantity is bigger to press on universal bumper
Routed structure, by connecting the elastic endergonic piece of easy flexing at the back side of energy-absorbing foam, the structure design of energy-absorbing foam has brittle
Disconnected position, the fracture and movement of energy-absorbing foam absorb energy, while increasing the deformable space of Abdeckung Stossfaenger, increased
Buffer distance during collision.
The utility model adopts the following technical scheme that realization：
A kind of bumper energy absorption buffer structure, includes successively from inside to outside：
The energy-absorbing piece bracket that is fixed on front anticollision beam of automobile, the elastic endergonic piece being entrenched on the energy-absorbing piece bracket,
It is fitted in energy-absorbing foam, exterior skin on elastic endergonic piece.
Further, the described upper and lower both sides of energy-absorbing piece bracket are separately provided for chimeric elastic endergonic piece and are elasticity
The deformation of energy-absorbing piece leaves the chimeric variant part of energy-absorbing piece in space, for limiting the spacing extension deformed after energy-absorbing foam breakdown.
So as to the deformation for elastic endergonic piece leaves sufficient space, while carrying out appropriate limitation to the deformation after energy-absorbing foam breakdown.
Further, the elastic endergonic piece and energy-absorbing foam along energy-absorbing piece bracket length direction subsection setup, to keep away
Exempt from that its transverse strength is excessive to cause the elastic endergonic piece cannot effective deformation and energy-absorbing foam situation about cannot be broken.
Further, the energy-absorbing piece bracket is by bolt and front anticollision beam of automobile, and material and front anticollision beam of automobile phase
Together.
Further, the thickness of the described energy-absorbing piece bracket is 2 ~ 3mm.
Further, described elastic endergonic piece is using low-intensity and the material of Low rigidity, including aluminium alloy, mild steel.
Further, the thickness of described elastic endergonic piece is 1 ~ 2mm.
Further, described energy-absorbing foam inside shape with install after it is not deformed when elastic endergonic piece shape phase
Together.
Further, described energy-absorbing foamed material is expanded polypropylene.
Compared to existing technology, energy-absorbing piece bracket of the present utility model has high intensity and high rigidity, before can combining automobile
Collision prevention girders transmit impact force backward；The elastic endergonic piece has low-intensity and Low rigidity, and change can be produced in pedestrian impact
Shape and conquassation and energy absorption；The energy-absorbing foam can be broken in collision from the fragility of design, slide to both up and down, increase
Plus buffer distance during pedestrian impact.The utility model from car crass when pedestrian lower leg acceleration with collision time change
Angle, reduce pedestrian lower leg acceleration peak value, increase absorb collision energy and buffer distance, reduce collision when to pedestrian
Injury.
Brief description of the drawings
Fig. 1 represents the perspective exploded view of the bumper energy absorption buffer structure of the utility model implementation method.
Fig. 2 represents the schematic cross-section of the bumper energy absorption buffer structure of the utility model implementation method.
Fig. 3 represents the structural representation of the energy-absorbing piece bracket of the bumper energy absorption buffer structure of the utility model implementation method
Figure.
Fig. 4 represents the schematic diagram deformed by collision rift of the bumper energy absorption buffer structure of the utility model implementation method.
Fig. 5 represent the utility model implementation method in energy absorption principle and general insurance bumper structure comparison diagram.
It is shown in figure：1- front anticollision beam of automobile；2- energy-absorbing piece brackets；21- energy-absorbings piece is fitted together to variant part；22- is spacing to be prolonged
Extending portion；3- exterior skins；4- energy-absorbing foams；5- elastic endergonic pieces.
Specific embodiment
A kind of implementation method of the present utility model is explained hereinafter with reference to accompanying drawing.Size in present embodiment,
Material is for only for ease of the illustrated examples for understanding the utility model function, and the utility model actual detail is not limited.For
Function and the substantially identical part of construction do not do duplicate explanation in other legends, the part being not directly relevant to the utility model
Have been left out.
As depicted in figs. 1 and 2, a kind of bumper energy absorption buffer structure, includes successively from inside to outside：Prevent before being fixed on automobile
Hit the energy-absorbing piece bracket 2 on beam 1, the elastic endergonic piece 5 being entrenched on the energy-absorbing piece bracket 2, be fitted on elastic endergonic piece 5
Energy-absorbing foam 4, exterior skin 3.
As shown in figure 3, described energy-absorbing piece bracket is separately provided for chimeric elastic endergonic piece 5 and is in both sides about 2
Elastic endergonic piece 5 deform leave the chimeric variant part 21 of energy-absorbing piece in space, for limiting deform after energy-absorbing foam breakdown spacing
Extension 22.So as to the deformation for elastic endergonic piece 5 leaves sufficient space, while being fitted to the deformation after energy-absorbing foam breakdown
When limitation.
The elastic endergonic piece 5 and energy-absorbing foam 4 are set along three sections of the length direction point of energy-absorbing piece bracket 2, to avoid it
Transverse strength is excessive cause energy-absorbing piece cannot effective deformation and energy-absorbing foam situation about cannot be broken, lead to not to produce preferable
Deformation effect.The multisection type for other quantity, such as four-part form can also be arranged as required to.Described elastic endergonic piece 5 is used
The material of low-intensity and Low rigidity, including aluminium alloy, mild steel etc., is entrenched in energy-absorbing piece bracket 2 using the elasticity of material, thick
It is 1 ~ 2mm to spend, can be close with Metal Sheets for Body-manufacturing thickness, it is ensured that with certain elastic and relatively low strength degree, specifically can basis
Practical structures determine.Elastic endergonic piece 5 is entrenched in energy-absorbing piece bracket 2 by the expansion elastic force of above-below direction, during due to installing
There is interaction force between energy-absorbing piece bracket 2 and elastic endergonic piece 5, elastic endergonic piece 5 does not produce horizontal shifting by friction
Dynamic, design shown in shape design reference Fig. 2 of elastic endergonic piece, its cross section is V-shaped, and angle is 120 degree under nature, protects
Demonstrate,proving whole elastic endergonic piece 5 being capable of crumple.
The energy-absorbing piece bracket 2 is by bolt and front anticollision beam of automobile 1（Installation site shown in reference picture 1, in elastic endergonic
The space at the interval of piece 5 and two ends arrangement installation site）, and material is identical with front anticollision beam of automobile 1, thickness is 2 ~ 3mm, it is ensured that tool
There is intensity higher, its design shape is fitted front anticollision beam of automobile 1 substantially, present embodiment is assumed and front anticollision beam of automobile 1
Binding face is simple curved surface, and detail is designed according to collision prevention girders.
The shape of the elastic endergonic piece 5 when the described interior shape of energy-absorbing foam 4 is not deformed with after installation is identical, to ensure
Both substantially fit, and its material can be using the widely used expanded polypropylene in market（EPP）Deng foamed material, it is specifically along automobile
Horizontal shape can be according to structure design.The front shape of energy-absorbing foam 4 is designed with reference to the shape of specific covering, this embodiment party
Formula assumes that space is sufficiently large in the exterior skin 3 of bumper, has and between the exterior skin 3 of insurance after the anterior installation of energy-absorbing foam 4
Certain interval, so front portion is designed as simple curved surface, design can be adjusted in actual design according to different bumpers.
As shown in figure 4, because the energy-absorbing piece has low-intensity and Low rigidity, can be deformed and press in pedestrian impact
Burst and energy absorption, the energy-absorbing foam can be broken in collision from the fragility of design, slide to both up and down, increase pedestrian
Buffer distance during collision.
After present embodiment design production and installation, it should carry out experimental test, it is ensured that whole device can be according to
Above-mentioned theory is operated.If specific effect is variant, structural analysis and adjusted design should be carried out, to meet requirement.Such as Fig. 5
It is shown, the effect that whole energy-absorbing buffering structure has in actual collision, the result of the test of the present apparatus and its adjusted design device
（The leg acceleration time graph of pedestrian impact experiment）Should substantially have diagram shape in theory, compared to equipped with common guarantor
The result of the test of dangerous thick stick, leg accelerating curve peak value can reduce, and integrated curved is longer along time shaft.
Above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and is not
Restriction to implementation method of the present utility model.For those of ordinary skill in the field, on the basis of described above
On can also make other changes in different forms.There is no need and unable to be exhaustive to all of implementation method.
All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in this reality
Within new scope of the claims.
Claims (9)
1. a kind of bumper energy absorption buffer structure, it is characterised in that include successively from inside to outside：
Energy-absorbing piece bracket (2) being fixed on front anticollision beam of automobile (1), the elasticity suction being entrenched on the energy-absorbing piece bracket (2)
Can piece (5), the energy-absorbing foam (4), the exterior skin (3) that are fitted on elastic endergonic piece (5).
2. bumper energy absorption buffer structure according to claim 1, it is characterised in that：On described energy-absorbing piece bracket (2)
Lower both sides are separately provided for chimeric elastic endergonic piece (5) and for the energy-absorbing piece that elastic endergonic piece (5) deformation leaves space is embedding
Fastening deformation portion (21), for limiting the spacing extension (22) deformed after energy-absorbing foam breakdown.
3. bumper energy absorption buffer structure according to claim 1, it is characterised in that：The elastic endergonic piece (5) and suction
Can foam (4) along energy-absorbing piece bracket (2) length direction subsection setup.
4. bumper energy absorption buffer structure according to claim 1, it is characterised in that：The energy-absorbing piece bracket (2) passes through
Bolt and front anticollision beam of automobile (1), and material is identical with front anticollision beam of automobile (1).
5. bumper energy absorption buffer structure according to claim 1, it is characterised in that：The described energy-absorbing piece bracket
(2) thickness is 2 ~ 3mm.
6. bumper energy absorption buffer structure according to claim 1, it is characterised in that：Described elastic endergonic piece (5) is adopted
With low-intensity and the material of Low rigidity, including aluminium alloy, mild steel.
7. bumper energy absorption buffer structure according to claim 1, it is characterised in that：Described elastic endergonic piece (5)
Thickness is 1 ~ 2mm.
8. bumper energy absorption buffer structure according to claim 1, it is characterised in that：Described energy-absorbing foam (4) is internal
The shape of the elastic endergonic piece (5) when shape is not deformed with after installation is identical.
9. bumper energy absorption buffer structure according to claim 1, it is characterised in that：Described energy-absorbing foam (4) material
It is expanded polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234435.3U CN206217823U (en) | 2016-11-17 | 2016-11-17 | A kind of bumper energy absorption buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234435.3U CN206217823U (en) | 2016-11-17 | 2016-11-17 | A kind of bumper energy absorption buffer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206217823U true CN206217823U (en) | 2017-06-06 |
Family
ID=58792870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621234435.3U Expired - Fee Related CN206217823U (en) | 2016-11-17 | 2016-11-17 | A kind of bumper energy absorption buffer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206217823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515633A (en) * | 2016-11-17 | 2017-03-22 | 华南理工大学 | Bumper energy absorbing buffer structure |
-
2016
- 2016-11-17 CN CN201621234435.3U patent/CN206217823U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515633A (en) * | 2016-11-17 | 2017-03-22 | 华南理工大学 | Bumper energy absorbing buffer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20191117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |