CN102381269B - Automobile bumper energy absorption box with stable performance - Google Patents
Automobile bumper energy absorption box with stable performance Download PDFInfo
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- CN102381269B CN102381269B CN201110237670.1A CN201110237670A CN102381269B CN 102381269 B CN102381269 B CN 102381269B CN 201110237670 A CN201110237670 A CN 201110237670A CN 102381269 B CN102381269 B CN 102381269B
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- energy
- energy absorption
- absorption box
- absorbing post
- post
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 63
- 239000006096 absorbing agent Substances 0.000 claims description 44
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012795 verification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to an automobile bumper energy absorption box with stable performance, which is used for solving the problems easily generated in the collision process of the energy absorption box made of steel materials. The energy absorption box consists of an energy absorption post and an energy absorption device, wherein both the energy absorption post and the energy absorption device are in a round platform-shaped funnel type, the small opening end of the energy absorption post is inserted into the small opening end of the energy absorption device, and the energy absorption post is welded with the energy absorption device. Through changing the structural design of the energy absorption box, the stability of the energy absorption box during the collision pressing crushing is greatly improved on the premise that the collision performance meets the requirement, simultaneously, the structure is simple, and the weight is reduced through being compared with that of the common energy absorption box. The cross section of the energy absorption box is in a round structure, so the diameter can be freely changed according to the design space of a bumper, and the structural deformation energy absorption mode is not influenced. The design possibility of different material thicknesses is provided for design personnel through the screwing pressing technology, and the energy absorption requirements of different automobile types can be met.
Description
Technical field
The present invention relates to a kind of Vehicular device, be particularly applicable to the stable automobile bumper energy absorption box of various car performances, belong to automobile technical field.
Background technology
Along with improving constantly that state-of-art are fast-developing and people live, increasing various automobile enters huge numbers of families as transportation and walking-replacing tool, and the economy that improves the safety of automobile under collision situation and Automobile manufacturing has become the important topic of automobile research and development.Federal bumper is when automobile crashes, to protect to greatest extent the vitals of occupant safety, its keystone configuration to comprise the energy-absorption box between crossbeam and connecting cross beam and car body adapter plate.Energy-absorption box is when automobile is subject to clashing into, with its compressive deformation, fully to absorb impact kinetic energy and reduce maximum impact to relax the parts that impact.For improving the energy-absorbing effect of energy-absorption box, manufacturing enterprise normally starts with from improving several aspects such as the mechanical property of material, the cross dimensions that strengthens energy-absorption box and change energy-absorption box planform.At present conventional energy-absorption box is made by bi-material: a kind of is to adopt steel, and two U-shaped blanked parts left and right or fasten are up and down welded by two guarantors each other, by design energy-absorbing muscle in two U-shaped structures, reach energy-absorbing effect.The problem that this energy-absorption box exists, the one, because needing two guarantor's welderings, two blanked parts connect, very large change can be brought to material property in commissure, make its material property unstable, when bumping, inconsistent due to the change of material property and welded seam area, the different part results of identical product are variant; The 2nd, energy-absorption box is bumping while carrying out conquassation, because the design of itself structure and energy-absorbing muscle makes it be difficult to have symmetry, energy-absorption box easily occurs in collision process and tilt or partially fall, cause distortion not exclusively, energy-absorbing is insufficient.Another kind of energy-absorption box is selected aluminium, and mostly aluminium is extrusion forming, without weld seam, and generally does not carry out the design of reinforced rib, and its collision performance is relatively stable, but its cost is more expensive much than steel, cost raising, and this is that some low and middle-end vehicles are reluctant the selection of making.
Summary of the invention
The present invention provides a kind of common iron that uses to reach the automobile bumper energy absorption box in the unlikely run-off the straight of collision process or the stable performance of partially falling for solving the defect of above-mentioned prior art.
The alleged problem of the present invention solves by the following technical programs:
An automobile bumper energy absorption box for stable performance, its special feature is: it is comprised of energy-absorbing post and energy absorber, and energy-absorbing post and energy absorber are truncated cone-shaped funnel-form, and the osculum end of energy-absorbing post inserts the osculum end of energy absorber, both mutual seam.
The automobile bumper energy absorption box of above-mentioned stable performance, described energy-absorbing post big opening end diameter dimension D1 is 30-120mm, and cone angle beta is 17 o-21o, and described energy absorber big opening end diameter dimension D3 is 30-120mm, and cone angle is 36 o-44o.
The automobile bumper energy absorption box of above-mentioned stable performance, the big opening end end face of described energy-absorbing post is inclined-plane, and the high side size H1 of energy-absorbing post is 25-150mm, and oblique angle δ is 0-5 o; The length dimension H3 of described energy absorber is 25-150mm, and described energy-absorbing post osculum end is 5-25mm apart from the distance L of energy absorber osculum end.
The automobile bumper energy absorption box of above-mentioned stable performance, the yield strength of described energy-absorbing post is greater than 200Mpa, and the yield strength of energy absorber is greater than 150 Mpa, more than the yield strength of energy-absorbing post is greater than the yield strength 20Mpa of energy absorber.
The present invention is directed to steel energy-absorption box easily there is energy-absorption box inclination or partially falls in collision process, cause distortion not exclusively, the inadequate problem of energy-absorbing improves, the automobile bumper energy absorption box that designs that a kind of collision performance is stable, longitudinal not run-off the straight of conquassation only occurs or partially fall in collision process.This product, by changing the structure design of energy-absorption box, under the prerequisite meeting the demands, has improved stability when energy-absorption box collides conquassation greatly at collision performance; Simultaneously simple in structure, common energy-absorption box weight saving on year-on-year basis; Because its cross section is circular configuration, can arbitrarily change diameter according to bumper/spoiler design space, do not affect structural distortion energy-absorbing modes; Its spinning process provides the possibility that does not wait the thick design of material to designer, to adapt to different automobile types energy-absorbing needs.Through cae analysis and verification experimental verification, this kind of energy-absorption box deformation pattern and expected design are substantially identical, can help designer to estimate energy-absorption box deformation pattern, and need to change energy-absorption box sectional dimension and thickness according to vehicle structure, to meet different vehicle collision requirement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is schematic perspective view of the present invention;
Fig. 3 is energy-absorption box distortion first stage schematic diagram;
Fig. 4 is energy-absorption box distortion subordinate phase schematic diagram.
Attached number in the figure is as follows: 1. energy-absorbing post, 2. energy absorber, 3. vehicle body adapter plate.
The specific embodiment
Referring to Fig. 1, Fig. 2, institute of the present invention automobile bumper energy absorption box is comprised of energy-absorbing post 1 and energy absorber 2, and energy-absorbing post and energy absorber are truncated cone-shaped funnel-form, and the osculum end of energy-absorbing post inserts the osculum end of energy absorber, insertion distance L is 5-25mm, between energy-absorbing post, energy absorber, by circumferential weld, is connected.Energy-absorbing post big opening end and crossbeam seam, energy absorber big opening end and the seam of vehicle body adapter plate.The physical dimension of energy-absorbing post and energy absorber is as follows: energy-absorbing post 1 big opening end diameter dimension D1 is 30-120mm, cone angle beta is 17 o-21o, energy-absorbing post big opening end end face is inclined-plane, and oblique angle δ is 0-5 o, and the high side size H1 of energy-absorbing post is that 25-150mm(big opening end end face is inclined-plane); Described energy absorber 2 big opening end face diameter dimension D3 are 30-120mm, and cone angle is 36 o-44o, and the length dimension H3 of energy absorber 2 is 25-150mm.The yield strength of its energy-absorbing post is greater than 200Mpa, and the yield strength of energy absorber is greater than 150 Mpa, and more than the yield strength of energy-absorbing post is greater than the yield strength 20Mpa of energy absorber.
Referring to Fig. 3, Fig. 4, the present invention is the U-shaped blanked part of common two steels left and right or the energy-absorption box structure that fastens up and down, be modified into two circular funnel structures before and after seam form.When collision occurs, because energy absorber 2 intensity are less than energy-absorbing post 1 intensity, power passes to energy absorber 2 by energy-absorbing post 1, energy absorber 2 is from starting distortion with energy-absorbing post 1 junction, the distortion of energy absorber 2 is divided into two stages, and first stage is that energy-absorbing post 1 osculum side pressure is burst vehicle body adapter plate 3 places as shown in Figure 3.Second stage is key problem in technology point of the present invention: the distortion of common energy-absorption box is generally conquassation and finishes to vehicle body adapter plate place, and constructional feature of the present invention is not finished after first stage has been out of shape, energy absorber 2 continues distortion by being pressed under the transmission of energy-absorbing post 1 power, until the funnel shaped of energy absorber 2 is inverted, the osculum end of energy-absorbing post 1 and the osculum end of energy absorber 2 conquassation simultaneously to energy absorber is inverted as shown in Figure 4.By the distortion in two stages, energy-absorption box distortion completely and absorbed enough energy, this kind of deformation pattern also guaranteed that energy-absorption box longitudinal not run-off the straight of conquassation only occurs in collision process or partially falls, the round section of energy-absorbing post and energy absorber has guaranteed that energy-absorption box structural entity is stressed evenly, has avoided causing because local pressure is excessive energy-absorption box to tilt and has partially fallen.The round section of energy absorber of the present invention and energy-absorbing post, is beneficial to according to different crossbeams and vehicle body installation dimension design energy-absorption box and cuts shape size.
Energy absorber of the present invention and energy-absorbing post junction only have a circle circumferential weld, and this face of weld is vertical with deformation direction, can not affect the Collapse of Concrete of energy-absorption box in collision process because welding reason changes material property, cause the unstable and inconsistent of collision performance.
Energy-absorbing post and the energy absorber of structure of the present invention all produce with spinning process and make, its process characteristic is can process not wait thick of material, designer can according to different automobile types need to design thicken, subtract thick, in zones of different, change thickness, reach different energy-absorbings and require and energy-absorbing effect.
The present invention, by changing the structure design of energy-absorption box, under the prerequisite meeting the demands, has improved the stability of energy-absorption box when collision conquassation greatly at collision performance; Its common energy-absorption box weight saving on year-on-year basis simple in structure.Through cae analysis and verification experimental verification, this kind of energy-absorption box deformation pattern is substantially identical with expected design, can help designer to estimate energy-absorption box deformation pattern, and according to vehicle structure, need to change energy-absorption box sectional dimension and thickness and meet different vehicle and collide requirement.
Below provide a specific embodiment of the present invention:
Energy-absorbing post big opening end diameter dimension D1 is 53.558mm, and cone angle beta is 19.5o, and big opening end end face oblique angle δ is 2.524o, and the high side size H1 of energy-absorbing post is 62.042mm; Described energy absorber 2 big opening end diameter dimension D3 are 89.195mm, and cone angle is 40.213o, and the length dimension H3 of energy absorber is 65.11mm; Energy-absorbing post osculum end is 6mm apart from the distance L of energy absorber osculum end; The yield strength of energy-absorbing post 1 is 200Mpa, and the yield strength of energy absorber 2 is 150Mpa.
Claims (2)
1. the automobile bumper energy absorption box of a stable performance, it is characterized in that: by energy-absorbing post (1) and energy absorber (2), formed, energy-absorbing post (1) and energy absorber (2) are truncated cone-shaped funnel-form, the osculum end of energy-absorbing post (1) inserts the osculum end of energy absorber (2), insertion distance L is 5-25mm, between energy-absorbing post, energy absorber, by circumferential weld, is connected;
Described energy-absorbing post (1) big opening end diameter dimension D1 is 30-120mm, and cone angle beta is 17 o-21o, and described energy absorber (2) big opening end diameter dimension D3 is 30-120mm, and cone angle is 36 o-44o;
The yield strength of described energy-absorbing post (1) is greater than 200Mpa, and the yield strength of energy absorber (2) is greater than 150 Mpa, and the yield strength of energy-absorbing post is greater than the yield strength of energy absorber more than 20Mpa.
2. the automobile bumper energy absorption box of stable performance according to claim 1, is characterized in that: the big opening end end face of described energy-absorbing post (1) is inclined-plane, and the high side size H1 of energy-absorbing post (1) is 25-150mm, and oblique angle δ is 0o-5o, but δ is not 0o; The length dimension H3 of described energy absorber (2) is 25-150mm, and described energy-absorbing post (1) osculum end is 5-25mm apart from the distance L of energy absorber (2) osculum end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110237670.1A CN102381269B (en) | 2011-08-18 | 2011-08-18 | Automobile bumper energy absorption box with stable performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110237670.1A CN102381269B (en) | 2011-08-18 | 2011-08-18 | Automobile bumper energy absorption box with stable performance |
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| Publication Number | Publication Date |
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| CN102381269A CN102381269A (en) | 2012-03-21 |
| CN102381269B true CN102381269B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110237670.1A Active CN102381269B (en) | 2011-08-18 | 2011-08-18 | Automobile bumper energy absorption box with stable performance |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600016B (en) * | 2017-09-18 | 2023-09-29 | 华侨大学 | Automobile collision energy absorbing device |
| CN107972617B (en) * | 2017-12-14 | 2023-08-22 | 南京理工大学 | Performance-adjustable automobile collision energy absorbing device |
| CN115467272B (en) * | 2022-10-20 | 2024-05-31 | 山东高速股份有限公司 | Extrusion opening energy absorption method and anti-collision pad structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4241109A1 (en) * | 1991-12-16 | 1993-06-17 | Volkswagen Ag | Deformation for motor vehicles - has stop positivity engaging round base at the latest at the start of inverted deformation |
| JP3327030B2 (en) * | 1995-01-27 | 2002-09-24 | トヨタ自動車株式会社 | Impact energy absorbing device and its mounting structure |
| CN2886288Y (en) * | 2006-04-24 | 2007-04-04 | 徐幸福 | Mechanical device capable of reducing impact force |
| CN201099214Y (en) * | 2007-08-30 | 2008-08-13 | 赵连柱 | Crash-proof apparatus |
| CN101432168A (en) * | 2004-09-07 | 2009-05-13 | 沙普公司 | Plastic energy management beam |
| JP2010065802A (en) * | 2008-09-12 | 2010-03-25 | Toray Ind Inc | Tubular energy absorber |
| CN202193049U (en) * | 2011-08-18 | 2012-04-18 | 凌云工业股份有限公司 | Energy-absorbing box with stable performance for bumper |
-
2011
- 2011-08-18 CN CN201110237670.1A patent/CN102381269B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4241109A1 (en) * | 1991-12-16 | 1993-06-17 | Volkswagen Ag | Deformation for motor vehicles - has stop positivity engaging round base at the latest at the start of inverted deformation |
| JP3327030B2 (en) * | 1995-01-27 | 2002-09-24 | トヨタ自動車株式会社 | Impact energy absorbing device and its mounting structure |
| CN101432168A (en) * | 2004-09-07 | 2009-05-13 | 沙普公司 | Plastic energy management beam |
| CN2886288Y (en) * | 2006-04-24 | 2007-04-04 | 徐幸福 | Mechanical device capable of reducing impact force |
| CN201099214Y (en) * | 2007-08-30 | 2008-08-13 | 赵连柱 | Crash-proof apparatus |
| JP2010065802A (en) * | 2008-09-12 | 2010-03-25 | Toray Ind Inc | Tubular energy absorber |
| CN202193049U (en) * | 2011-08-18 | 2012-04-18 | 凌云工业股份有限公司 | Energy-absorbing box with stable performance for bumper |
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| Publication number | Publication date |
|---|---|
| CN102381269A (en) | 2012-03-21 |
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