CN201890203U - Energy absorption box and energy absorption device - Google Patents
Energy absorption box and energy absorption device Download PDFInfo
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- CN201890203U CN201890203U CN2010205915146U CN201020591514U CN201890203U CN 201890203 U CN201890203 U CN 201890203U CN 2010205915146 U CN2010205915146 U CN 2010205915146U CN 201020591514 U CN201020591514 U CN 201020591514U CN 201890203 U CN201890203 U CN 201890203U
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- absorbing box
- box main
- energy absorption
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Abstract
The utility model provides an energy absorption box comprising a beam-shaped main body of the energy absorption box and a weakening hole, wherein the cross-sectional shape of the beam-shaped main body of the energy absorption box is approximately trapeziform at a middle section; and the weakening hole is arranged on the main body of the energy absorption box and is used for absorbing energy.
Description
Technical field
The utility model relates to a kind of energy-absorbing box and energy absorption device, relates in particular to the energy-absorbing box and the energy absorption device that are applied to vehicle bumper.
Background technology
A large amount of traffic accidents show, during frontal crash of vehicles pedestrian in travelling, bumper/spoiler is a very crucial zone.Because in car people collision process, pedestrian's knee joint comes in contact with the bumper/spoiler zone usually at first.Therefore the order of severity of pedestrian lower leg joint injuries directly depends on the energy-absorbing effect in bumper/spoiler zone.In order to alleviate the bumper/spoiler collision prevention girders, in the front portion of preceding guarantor's collision prevention girders the pedestrian protecting energy absorption device is installed usually directly to the impact in pedestrian's knee joint.
Current pedestrian lower leg fender guard mainly contains three kinds of forms, promptly crashproof foam, honeycomb aluminium, energy-absorbing spring.Yet there is following defective at present in these pedestrian lower leg fender guards:
(1) therefore present the most frequently used buffering energy-absorbing foam, but because these foams are generally solid construction and bulk compressibility only is being about 70%～80% under the limited or not enough situation of arrangement space, just is difficult to reach the protection effect of hope.
And, if adopt the energy-absorbing foam, then need bigger space to be used to be out of shape energy-absorbing, and bigger anterior arrangement space will certainly have influence on the front overhang length of vehicle and the crossing ability of vehicle, and vehicle body integral body is impacted.
(2) with respect to the energy-absorbing foam, the bulk compressibility of honeycomb aluminium is higher, but himself cost is relative with maintenance cost higher, in case deform or damage then need direct replacing, not reproducible utilization.
(3) in addition, also have a kind of endergonic structure of crimp shape of spring-like, it adopts several absorption cells to be installed on dispersedly between collision prevention girders and the Abdeckung Stossfaenger.Though energy-absorbing effect is preferably arranged, its stability and continuity are relatively poor, and because the endergonic structure of its protective value and fold shape is distributed with direct relation, so the protective value difference of diverse location is very big.(utility model patent CN201343009Y)
This shows that there are big, the shortcomings such as cost is high, poor reliability that take up room in these pedestrian lower leg fender guards.
List of references: utility model patent CN201343009Y
The utility model content
The purpose of this utility model is to provide a kind of simple in structure, arrangement space is little, maintenance cost is low, protection is effective energy-absorbing box and energy absorption device.
Energy-absorbing box of the present utility model comprises: the energy-absorbing box main body of beam shape, its cross sectional shape in the stage casing for roughly trapezoidal; And be arranged on and be used for endergonic reduction hole on the described energy-absorbing box main body.
Above-mentioned energy-absorbing box main body for trapezoidal, is disposable punch forming part under the situation of overlooking.
The thickness of energy-absorbing box main body is in the scope of 0.5～1.0mm.
According to said structure, because the cross sectional shape of energy-absorbing box main body for roughly trapezoidal, therefore has good distortion crumple pattern in collision process, can guarantee to have metastable rigidity in deformation process, make accelerating curve approach desirable " square wave ", higher energy-absorbing efficient is arranged.
And, utilizing said structure, the bulk compressibility of energy-absorbing box can reach more than 95%, has less remaining space behind collision energy-absorbing, can utilize limited arrangement space fully and save arrangement space.
And because two surfaces up and down of energy-absorbing box main body and front surface have the reduction hole, reduction hole size and position are used for regulating its rigidity, can carry out the optimization of size and position according to the wall thickness and the material of iron sheet.
In addition, energy absorption device of the present utility model comprises: the energy-absorbing box main body of beam shape, its cross sectional shape in the stage casing for roughly trapezoidal; And be arranged on and be used for endergonic reduction hole on the described energy-absorbing box main body, the two ends of described energy-absorbing box main body have flanging, described energy-absorbing box main body are welded on the both sides of collision prevention girders by this flanging.
According to said structure, the intensity at energy-absorbing box main body two ends can be regulated by the size of flanging.
The cross section in above-mentioned energy-absorbing box main body stage casing formed trapezoidal in, upper base and going to the bottom perpendicular to horizontal surface, upper base (base that length is short) in the outer part, go to the bottom (base that length is long) near vehicle body, and the drift angle that is positioned at the top is 120～150 ° scope, and the drift angle that is positioned at the below is 90～120 ° scope.
Description of drawings
Fig. 1 is the structural representation of the energy absorption device of expression embodiment of the present invention.
Fig. 2 is the cutaway view in the energy-absorbing box stage casing of expression embodiment of the present invention.
Fig. 3 is the block diagram at the energy absorption device two ends of expression embodiment of the present invention.
Fig. 4 is the diagram of curves that acceleration/accel that the foam texture with energy absorption device of the present invention and prior art damages shank compares.A) accelerating curve during foam texture; B) accelerating curve of expression energy absorption device of the present invention.
Fig. 5 is the scheme drawing that the compression situation with the foam texture of energy absorption device of the present invention and prior art compares.A) foam texture of expression prior art.B) structure of expression energy absorption device of the present invention.Compression situation when c) expression is with the foam texture collision.Compression situation when d) expression is collided with energy absorption device of the present invention.
The specific embodiment
Below the specific embodiment of the present utility model is elaborated.Following embodiment only is an example of technical solutions of the utility model, should not be interpreted as the qualification to the utility model protection domain.
As shown in Figure 1, 2, in the present embodiment, the energy-absorbing box comprises: the energy-absorbing box main body 1 of beam shape, its cross sectional shape in the stage casing for roughly trapezoidal; And be arranged on and be used for endergonic reduction hole 2 on the energy-absorbing box main body 1.
Particularly, shown in Fig. 2,3, energy-absorbing box main body 1 comprises: the 1st roughly horizontal S1, be approximately perpendicular to the 3rd S3 of horizontal surface, between the 1st S1 and the 3rd S3, be the 2nd S2 of chamfering, roughly horizontal and with the 4th S4 of the 3rd S3 bonded assembly and with the 5th of the 4th S4 bonded assembly.Therefore, the cross sectional shape in the stage casing of energy-absorbing box main body 1 is for roughly trapezoidal.During this is trapezoidal, upper base (on cutaway view, being equivalent to the 3rd S3) and going to the bottom perpendicular to horizontal surface, upper base (base that length is short is equivalent to the 3rd S3 on cutaway view) is in the outer part, go to the bottom (base that length is long) near vehicle body, promptly near bumper/spoiler collision prevention girders 3.
And this trapezoidal last apex angle is 120～150 ° scope, and following apex angle ss is 90～120 ° scope.
In addition, this energy-absorbing box main body 1 is trapezoidal under the situation of overlooking, and is disposable punch forming part.
As Figure 1-3 the energy-absorbing box is installed on the bumper/spoiler collision prevention girders 3, thereby constitutes energy absorption device.
In the present embodiment, the energy-absorbing box is welded on the upper surface and the front surface of bumper/spoiler collision prevention girders 3 by solder joint P1, P2 on the 1st S1 and the 5th S5.
In addition, the two ends of energy-absorbing box main body 1 have the 1st, the 2nd, the 3rd flanging H1, H2, H3, and the 1st flanging H1 extends from the 1st S1 bending; The 2nd flanging H2 extends from the 3rd S3 bending; The 3rd flanging H3 extends from the 5th S5 bending.And the 1st flanging H1 and the 2nd flanging H2 are welded in the 3rd flanging H3, and energy-absorbing box main body 1 are welded on the both sides of bumper/spoiler collision prevention girders 3 by the 3rd flanging H3.Utilize this structure, can control the intensity at energy-absorbing box main body 1 two ends by the size of regulating flanging H1, H2, H3.
In addition, the thickness of energy-absorbing box main body is in the scope of 0.5～1.0mm.
According to said structure, because the cross sectional shape of energy-absorbing box main body 1 for roughly trapezoidal, therefore has good distortion crumple pattern in collision process, can guarantee to have metastable rigidity in deformation process, make accelerating curve approach desirable " square wave ", higher energy-absorbing efficient is arranged.
And, utilizing said structure, the bulk compressibility of energy-absorbing box can reach more than 95%, has less remaining space behind collision energy-absorbing, can utilize limited arrangement space fully and save arrangement space.
And because two surfaces up and down of energy-absorbing box main body 1 and front surface have reduction hole 2, reduction hole size and position are used for regulating its rigidity, can carry out the optimization of size and position according to the wall thickness and the material of iron sheet.
In order to prove above-mentioned effect of the present invention, the staff has carried out analogue test, and its test results is as follows:
Fig. 4 represented under identical arrangement space, the contrast situation of the curve of the acceleration/accel that the crashproof foam of the energy absorption device of present embodiment and prior art damages shank.The energy absorption device that uses present embodiment is because good crumple failure mode, making has the continuous rigidity of structure in the whole compressive deformation process, therefore the acceleration/accel that pedestrian's knee is impacted is rendered as desirable " square wave " shape, can absorb impact energy fully, peak acceleration to the shank joint only is 110g, meets the index request of European pedestrian protecting rules and EuroNCAP fully; And foam endergonic structure rigidity in compression process continues along with the increase of amount of compression to increase, the collision energy that is absorbed is less than energy absorption device, thereby tangible peak value (reaching 173g) appearred in the impact acceleration that shank produces, such acceleration/accel can have bigger injury risk to pedestrian lower leg.
Fig. 5 has represented the contrast of the compression situation of two kinds of structures.As can be seen, the bulk compressibility of the energy absorption device of present embodiment (d) obviously will be higher than foam texture (c), and the impact that makes shank be subjected to obviously weakens, thereby satisfies the survival space demand of shank crash protection in limited arrangement space.
Claims (4)
1. an energy-absorbing box is characterized in that, comprising: the energy-absorbing box main body of beam shape, its cross sectional shape in the stage casing for roughly trapezoidal; And
Be arranged on and be used for endergonic reduction hole on the described energy-absorbing box main body.
2. energy-absorbing box as claimed in claim 1 is characterized in that the thickness of energy-absorbing box main body is in the scope of 0.5～1.0mm.
3. an energy absorption device is characterized in that, comprising: the energy-absorbing box main body of beam shape, its cross sectional shape in the stage casing for roughly trapezoidal; And
Be arranged on and be used for endergonic reduction hole on the described energy-absorbing box main body,
The two ends of described energy-absorbing box main body have flanging, described energy-absorbing box main body are welded on the both sides of bumper/spoiler collision prevention girders by this flanging.
4. energy absorption device as claimed in claim 3 is characterized in that, the cross section in above-mentioned energy-absorbing box main body stage casing formed trapezoidal in, upper base and going to the bottom perpendicular to horizontal surface, upper base is outer, go to the bottom near vehicle body,
And the drift angle angle that is positioned at the top is 120～150 ° scope, and the drift angle angle that is positioned at the below is 90～120 ° scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205915146U CN201890203U (en) | 2010-11-04 | 2010-11-04 | Energy absorption box and energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205915146U CN201890203U (en) | 2010-11-04 | 2010-11-04 | Energy absorption box and energy absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201890203U true CN201890203U (en) | 2011-07-06 |
Family
ID=44219678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205915146U Expired - Lifetime CN201890203U (en) | 2010-11-04 | 2010-11-04 | Energy absorption box and energy absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201890203U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014202007A1 (en) * | 2013-06-18 | 2014-12-24 | 全耐塑料公司 | Energy-absorption device of automobile |
| CN105745139A (en) * | 2013-11-19 | 2016-07-06 | 本田技研工业株式会社 | Vehicle-chassis-rear-section structure |
| CN109070822A (en) * | 2016-02-03 | 2018-12-21 | 法拉第未来公司 | Tapered resistance to compression tank for vehicle |
| WO2020173113A1 (en) * | 2019-02-28 | 2020-09-03 | Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd. | M-shaped crash box structure for an automobile front end and assembly thereof |
-
2010
- 2010-11-04 CN CN2010205915146U patent/CN201890203U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014202007A1 (en) * | 2013-06-18 | 2014-12-24 | 全耐塑料公司 | Energy-absorption device of automobile |
| US9878687B2 (en) | 2013-06-18 | 2018-01-30 | Compagnie Plastic Omnium | Vehicle energy absorbing device |
| CN105745139A (en) * | 2013-11-19 | 2016-07-06 | 本田技研工业株式会社 | Vehicle-chassis-rear-section structure |
| CN109070822A (en) * | 2016-02-03 | 2018-12-21 | 法拉第未来公司 | Tapered resistance to compression tank for vehicle |
| CN109070822B (en) * | 2016-02-03 | 2022-04-08 | 法拉第未来公司 | Tapered crush-resistant tank for vehicle |
| WO2020173113A1 (en) * | 2019-02-28 | 2020-09-03 | Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd. | M-shaped crash box structure for an automobile front end and assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |