CN102745159A - Automobile crash energy-absorbing box - Google Patents
Automobile crash energy-absorbing box Download PDFInfo
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- CN102745159A CN102745159A CN201210065027XA CN201210065027A CN102745159A CN 102745159 A CN102745159 A CN 102745159A CN 201210065027X A CN201210065027X A CN 201210065027XA CN 201210065027 A CN201210065027 A CN 201210065027A CN 102745159 A CN102745159 A CN 102745159A
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Abstract
The invention discloses an automobile crash energy-absorbing box and aims at overcoming defects that existing energy-absorbing boxes in bumper systems with lower front cross members are poor in integrity and large in occupied space. The automobile crash energy-absorbing box comprises an energy-absorbing box body and an energy-absorbing arm, wherein the energy-absorbing arm is connected with the side surface of the energy-absorbing box body in an inclined mode and integrated with the energy-absorbing box body, a first energy-absorbing groove is arranged on the side surface of the energy-absorbing box body, a second energy-absorbing groove is arranged on the side surface of the energy-absorbing arm, connection feet are arranged at the end of the energy-absorbing arm, the front end of the energy-absorbing box body is fixedly connected with an automobile front cross member, the rear end of the energy-absorbing box body is fixedly connected with an automobile engine room, and the connection feet are fixedly connected with an automobile lower front cross member. When the front end of an automobile is crashed, the energy-absorbing box is crumpled and absorbs energies, so that the whole automobile is buffered, passengers in the automobile are protected, shanks of pedestrians are prevented from being rolled to the bottom of the automobile, and the pedestrians are protected. The automobile crash energy-absorbing box is good in integrity and small in occupied space of connection.
Description
Technical field
The present invention relates to a kind of buffering automobile collision spare, more particularly, it relates to a kind of auto against energy-absorbing box that is arranged on automotive front end.
Background technology
Along with popularizing of automobile, the safety performance of auto against more and more receives people's attention.In order to improve the automotive crash safety performance, in the Federal bumper system design, be employed in the energy when increasing a distortion power-absorbing between front cross rail and the engine nacelle of automobile and coming absorbing impact usually, the injury values that reduces to collide.In order to improve the protection effect of pedestrian's shank when the auto against, can be under increasing below the former front cross rail in many vehicle bumper assemblies front cross rail.Pedestrian's shank bumps with following front cross rail, improves the protection effect of pedestrian's shank.Following front cross rail direct connection is on engine nacelle, and energy-absorbing effect is not good.Descending to tend to increase the energy-absorbing effect that a power-absorbing improves following front cross rail between front cross rail and the engine nacelle in order to improve energy-absorbing effect.Therefore be connected power-absorbing at front cross rail respectively with following front cross rail, two separate globalities of power-absorbing are poor, and it is big to take up room.
Chinese patent notification number CN201566583U; On September 1 2010 day for announcing, the name of utility model is called a kind of pedestrian lower leg fender guard, comprises front cross rail assembly and cabin crossbeam; Said pedestrian lower leg fender guard also is provided with the cross sill assembly; The cross sill assembly is provided with crossbeam tie-beam, vertical tie-beam and cross sill, and cross sill is fixedly connected with the crossbeam tie-beam, and the crossbeam tie-beam is fixedly connected with vertical tie-beam; The outer face of cross sill protrudes in the outer face of front cross rail assembly, and the cross sill material is a synthetic resin.Cross sill has elasticity, and protection pedestrian's shank is not provided with power-absorbing during auto against on the cross sill, though cross sill has elasticity, this cross sill rigidity is poor, is easy to damage.Another patent announcement CN201566701U, on September 1 2010 day for announcing, the utility model name is called front anti-collision beam energy-absorbing box; It comprises U flask body; U flask body wall is provided with the crumple guiding rib, and U flask body one end connection plate, the U flask body other end are established the connecting panel with the welding of front anti-collision beam crossbeam; It is dull and stereotyped that the open side of U flask body connects the energy-absorbing box, and the dull and stereotyped wall of energy-absorbing box is provided with the crumple guiding rib.Energy-absorbing box one end is connected on the front cross rail, and the other end is connected on the engine nacelle, for the vehicle that following front cross rail is arranged, is connected the energy-absorbing box at front cross rail respectively with following front cross rail, and the separate globality of two energy-absorbing boxes is poor, and it is big to take up room.
Summary of the invention
The present invention has overcome under the existing band that the energy-absorbing box globality in the front cross rail bumper assembly is poor, and the big deficiency that takes up room provides a kind of auto against energy-absorbing box, and it uses in the bumper assembly of front cross rail under band, good integrity, and it is little to take up room.
In order to solve the problems of the technologies described above; The present invention adopts following technical scheme: a kind of auto against energy-absorbing box, comprise the energy-absorbing box body, and the energy-absorbing box also comprises the energy-absorbing arm; The energy-absorbing arm tilt to be connected on the side of energy-absorbing box body and and energy-absorbing box body integrative-structure; The side of energy-absorbing box body is provided with the first energy-absorbing groove, and energy-absorbing arm side is provided with the second energy-absorbing groove, and the end of energy-absorbing arm is provided with connecting pin.One end of energy-absorbing box body is fixedly connected on the automobile front cross rail, and the other end is fixedly connected on the automotive engine compartment, and the connecting pin of energy-absorbing arm is fixedly connected under the automobile on the front cross rail; The first energy-absorbing groove energy-absorbing effect is good, and energy-absorbing box crumple energy-absorbing when automotive front end bumps has played the effect of buffering to whole automobile; Protected passenger's safety, following front cross rail helps protecting the safety of pedestrian's shank, when automobile and pedestrian bump; Following front cross rail and pedestrian's shank clashes into, and the energy-absorbing arm is obliquely installed on the energy-absorbing box body, just bending distortion backward easily of energy-absorbing arm like this; Absorb energy, following front cross rail just cushions backward, reduces the injured value of pedestrian's shank; The shank that prevents the pedestrian is brought under the vehicle body, has protected the pedestrian.And the energy-absorbing arm is provided with the second energy-absorbing groove, increased energy-absorbing effect.Energy-absorbing box body and energy-absorbing arm integrative-structure, front cross rail is connected on the power-absorbing with following front cross rail, energy-absorbing box good integrity, and also the connection of energy-absorbing box takes up room little.
As preferably, the angle of energy-absorbing arm and energy-absorbing box body is 45 ° ~ 70 °.The angle of energy-absorbing arm and energy-absorbing box body is too little, and it is strong that the energy-absorbing arm is connected on the energy-absorbing box body rigidity, and the collision energy-absorbing arm just is difficult for the crumple energy-absorbing; The angle of energy-absorbing arm and energy-absorbing box body is too big, and it is little that the energy-absorbing arm is connected on the energy-absorbing box body rigidity, and the energy-absorbing arm is easy to fall from the energy-absorbing box body is disconnected.The angle of energy-absorbing arm and energy-absorbing box body is moderate, has both guaranteed energy-absorbing arm energy-absorbing effect preferably, has guaranteed that again the energy-absorbing arm connects required rigidity.
As preferably, energy-absorbing box body front-end and back-end all are hatch frame, and the edge on every limit of energy-absorbing box body front-end and back-end hatch frame all is provided with inside flange, and the angle position of adjacent two edges is provided with the energy-absorbing breach.Energy-absorbing box body rear and front end hatch frame has been saved material, and hatch frame reduced rigidity, has increased energy-absorbing effect.Flange has increased energy-absorbing box body and the be connected area of front cross rail with engine nacelle, makes the connection of energy-absorbing box body more reliable.The energy-absorbing breach of adjacent both sides angle position makes the energy-absorbing box body more yielding, increases energy-absorbing effect.
As preferably, the first energy-absorbing groove and the second energy-absorbing groove all are the arc of indent, and the width of notch is 1:1 ~ 1.5:1 with the ratio of the degree of depth.The width of energy-absorbing groove notch is suitable with the ratio of the degree of depth, guarantees that the energy-absorbing groove has energy-absorbing effect preferably.
As preferably, the energy-absorbing box body is rectangular, connects on the energy-absorbing box body on the side of energy-absorbing arm three first energy-absorbing grooves are set, and four first energy-absorbing grooves are set respectively on other side.All be provided with the first energy-absorbing groove on four sides of rectangle energy-absorbing box body, be provided with on the side of three first energy-absorbing grooves and connecting the energy-absorbing arm, the first energy-absorbing groove of this side lacks one than other side, has guaranteed this side and energy-absorbing arm bonded assembly rigidity.
As preferably; The first energy-absorbing groove on each side of energy-absorbing box body is parallel to each other respectively; The first energy-absorbing groove on adjacent two sides links together successively and constitute the shaped as frame structure of three osed top shaped as frame structures and one one end opening from beginning to end; Three osed top shaped as frame structures are near energy-absorbing box body rear end, and the shaped as frame structure of an end opening is near energy-absorbing box body front end.The first energy-absorbing groove enough becomes shaped as frame structure and three osed top shaped as frame structures of one one end opening; In energy-absorbing box body distortion energy-absorbing; The first energy-absorbing groove is energy-absorbing successively in layer, always have four layers of endergonic structure, and the first energy-absorbing groove of every layer of endergonic structure is all on same plane; The synchronism of each side of energy-absorbing box body is good in the time of energy-absorbing, and energy-absorbing effect is good.Another kind of scheme, the first energy-absorbing groove is obliquely installed on each side of energy-absorbing box body, the bevelled first energy-absorbing groove formation helicoidal structure that is connected in turn.The first energy-absorbing groove continuous energy-absorbing in energy-absorbing of helicoidal structure; And collision time stressed be from the front end of energy-absorbing box body direction to the back-end; Stressed direction is not vertical but bevelled with the first energy-absorbing groove; This power just is decomposed in collision, has increased the energy-absorbing effect of the first energy-absorbing groove.
As preferably, the second energy-absorbing groove of each side links together and constitutes two osed top shaped as frame structures on the energy-absorbing arm.The second energy-absorbing groove on the energy-absorbing arm constitutes two osed top shaped as frame structures, and energy-absorbing effect is good.
As preferably, connecting pin has four ends from the energy-absorbing arm upwards to dig, and four connecting pins are two pairs and are arranged on up and down on the energy-absorbing arm, forms and the adaptive link slot of following front cross rail between two pairs of connecting pins.Link slot between the two pairs of connecting pins is clipped in down on the front cross rail, then with following front cross rail weld together, and this connection reliable and stable.
As preferably, the width of the first energy-absorbing groove on the energy-absorbing box body near energy-absorbing arm position to reducing successively away from energy-absorbing arm position.In energy-absorbing box body collision energy-absorbing; The impact that receives near energy-absorbing arm position to reducing successively away from energy-absorbing arm position; The width of the first energy-absorbing groove reduces successively, and the energy that the first energy-absorbing groove absorbs also reduces successively, according to the big width of the design first energy-absorbing groove down of impact; Make each first energy-absorbing groove energy-absorbing abundant, increase the energy-absorbing effect of energy-absorbing box body.
Compared with prior art, the invention has the beneficial effects as follows: (1) vehicle energy absorption box uses in the bumper assembly of front cross rail under band, good integrity, and it is little to take up room; (2) energy-absorbing effect of energy-absorbing box is good; (3) the energy-absorbing box helps protecting pedestrian's shank.
Description of drawings
Fig. 1 is the present invention and automobile bonded assembly structural representation;
Fig. 2 is the structural representation of embodiments of the invention 1;
Fig. 3 is the front elevation of embodiments of the invention 1;
Fig. 4 is the structural representation of embodiments of the invention 2;
Fig. 5 is the front elevation of embodiments of the invention 2;
Among the figure: 1, energy-absorbing box body, 2, the energy-absorbing arm, 3, the first energy-absorbing groove, 4, connecting pin, 5, flange, 6, the energy-absorbing breach, 7, link slot, 8, front cross rail, 9, front cross rail down, 10, engine nacelle, 11, the second energy-absorbing groove.
The specific embodiment
Pass through specific embodiment below, and combine accompanying drawing, technical scheme of the present invention is done further to specifically describe:
Embodiment 1: a kind of auto against energy-absorbing box (referring to accompanying drawing 2, accompanying drawing 3); Comprise energy-absorbing box body 1; Energy-absorbing box body 1 is rectangular, and the energy-absorbing box also comprises energy-absorbing arm 2, energy-absorbing arm 2 tilt to be connected on the side of energy-absorbing box body 1 and and energy-absorbing box body 1 integrative-structure; Energy-absorbing arm 2 is 45 ° ~ 70 ° with the angle of energy-absorbing box body 1, and energy-absorbing arm 2 is 60 ° with the angle of energy-absorbing box body 1 in the present embodiment.Energy-absorbing arm 2 is connected on the downside of energy-absorbing box body 1 and near the front end of energy-absorbing box body 1.The width of energy-absorbing arm 2 is consistent with the width of energy-absorbing box body 1 downside.The front end of energy-absorbing box body 1 is fixedly connected on the front cross rail 8 of automobile (referring to accompanying drawing 1), and the rear end is fixedly connected on the engine nacelle 10 of automobile.The end of energy-absorbing arm 2 is provided with four connecting pins 4; Four connecting pins 4 are upwards dug from the end of energy-absorbing arm 2; Four connecting pins are two pairs and are arranged on up and down on the energy-absorbing arm 2; Form between the two pairs of connecting pins 4 with adaptive 7, the two pairs of connecting pins 4 of link slot of following front cross rail 9 between link slot 7 be clipped in down on the front cross rail 9, then with following front cross rail 9 weld togethers.Energy-absorbing box body 1 front-end and back-end all are hatch frame; The edge on every limit of energy-absorbing box body 1 front-end and back-end hatch frame all is provided with inside flange 5; The angle position of adjacent two edges is provided with energy-absorbing breach 6, and the connection location of flange 5 and energy-absorbing box body 1 is fillet structure.Energy-absorbing box body 1 rear and front end hatch frame has been saved material, and hatch frame reduced rigidity, has increased energy-absorbing effect.Flange 5 has increased energy-absorbing box body 1 and the be connected area of front cross rail 8 with engine nacelle 10, makes the connection of energy-absorbing box body 1 more reliable.The energy-absorbing breach 6 of adjacent both sides angle position makes energy-absorbing box body 1 more yielding, increases energy-absorbing effect.The side of energy-absorbing box body 1 is provided with the strip shape first energy-absorbing groove 3, and the side equal intervals that connects energy-absorbing arm 2 on the energy-absorbing box body 1 is provided with three first energy-absorbing grooves 3, four first energy-absorbing grooves 3 of difference spaced set on other three sides.The side that connects energy-absorbing arm 2 has only three first energy-absorbing grooves 3, has guaranteed this side and energy-absorbing arm 2 bonded assembly rigidity.The first energy-absorbing groove 3 on energy-absorbing box body 1 each side is parallel to each other respectively; The first energy-absorbing groove 3 on adjacent two sides links together successively and constitute the shaped as frame structure of three osed top shaped as frame structures and one one end opening from beginning to end; Three osed top shaped as frame structures are near energy-absorbing box body rear end, and the shaped as frame structure of an end opening is near energy-absorbing box body front end.Linking together near the first energy-absorbing groove 3 on three sides of energy-absorbing box body 1 front end constitutes the shaped as frame structure of an end opening, and linking together near the first energy-absorbing groove 3 on four sides of energy-absorbing box body 1 rear end constitutes the sealing shaped as frame structure of rectangle.In energy-absorbing box body 1 distortion energy-absorbing; The first energy-absorbing groove 3 is energy-absorbing successively in layer, always have four layers of endergonic structure, and the first energy-absorbing groove 3 of every layer of endergonic structure is all on same plane; The synchronism of energy-absorbing box body 1 each side is good in the time of energy-absorbing, and energy-absorbing effect is good.The width of the first energy-absorbing groove 3 on the energy-absorbing box body 1 near energy-absorbing arm 2 positions to reducing successively away from energy-absorbing arm 2 positions.In energy-absorbing box body 1 collision energy-absorbing; The impact that receives near energy-absorbing arm 2 positions to reducing successively away from energy-absorbing arm 2 positions; The width of the first energy-absorbing groove 3 reduces successively, and the energy that the first energy-absorbing groove 3 absorbs also reduces successively, according to the big width of the design first energy-absorbing groove 3 down of impact; Make each the first energy-absorbing groove, 3 energy-absorbing abundant, increase the energy-absorbing effect of energy-absorbing box body 1.Energy-absorbing arm 2 sides are provided with the second energy-absorbing groove 11, and the second energy-absorbing groove 11 of each side links together and constitutes the osed top shaped as frame structure of two rectangles on the energy-absorbing arm 2.The arc that the first energy-absorbing groove 3 on energy-absorbing box body 1 and the energy-absorbing arm 2 and the second energy-absorbing groove 11 all are indent; The width of notch is 1:1 ~ 1.5:1 with the ratio of the degree of depth; In the present embodiment, the width of notch is 1:1 with the ratio of the degree of depth, has guaranteed that energy-absorbing groove 3 has energy-absorbing effect preferably.
The front end flange of auto against energy-absorbing box is welded on the automobile front cross rail, and the rear end flange is welded on the automotive engine compartment, and the link slot between the connecting pin of energy-absorbing arm end is clipped on the following front cross rail of automobile, and welds with following front cross rail.When automotive front end bumped, the energy-absorbing box received from the effect of front end impact to the back-end, energy-absorbing box crumple energy-absorbing.Be connected down the also crumple energy-absorbing of energy-absorbing arm on the front cross rail, energy-absorbing arm and energy-absorbing box body connection location bending distortion energy-absorbing.Energy-absorbing box body and energy-absorbing arm integrative-structure, front cross rail is connected on the power-absorbing with following front cross rail, energy-absorbing box good integrity, and also the connection of energy-absorbing box takes up room little.When automobile and pedestrian bumped, following front cross rail and pedestrian's shank clashed into, and following front cross rail is buffering backward just, reduced the injured value of pedestrian's shank, prevented that pedestrian's shank is brought under the vehicle body, had protected the pedestrian.
Embodiment 2: a kind of auto against energy-absorbing box (referring to accompanying drawing 4, accompanying drawing 5); Structure is similar with embodiment 1, comprises the energy-absorbing box body 1 of rectangle, and the energy-absorbing box also comprises energy-absorbing arm 2; Energy-absorbing arm 2 tilt to be connected on the side of energy-absorbing box body 1 and and energy-absorbing box body 1 integrative-structure; The side of energy-absorbing box body 1 is provided with the first energy-absorbing groove 3, on the side of connection energy-absorbing arm 2 three first energy-absorbing grooves 3 is set on the energy-absorbing box body 1, and four first energy-absorbing grooves 3 are set respectively on other side; The first energy-absorbing groove 3 is obliquely installed on each side of energy-absorbing box body 1; Leaning angle is 15 °, the bevelled first energy-absorbing groove 3 formation helicoidal structure that is connected in turn, the width of the first energy-absorbing groove 3 near energy-absorbing arm 2 ends to diminishing gradually away from the path of energy-absorbing arm 2 ends along spiral.In energy-absorbing box body collision energy-absorbing; The impact that receives near energy-absorbing arm position to reducing gradually away from energy-absorbing arm position; The width of the first energy-absorbing groove reduces gradually, and the energy that the first energy-absorbing groove absorbs also reduces gradually, according to the big width of the design first energy-absorbing groove down of impact; Make the first energy-absorbing groove energy-absorbing abundant, increase the energy-absorbing effect of energy-absorbing box body.
Above-described embodiment is two kinds of preferable schemes of the present invention, is not that the present invention is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (10)
1. auto against energy-absorbing box; Comprise energy-absorbing box body (1), it is characterized in that the energy-absorbing box also comprises energy-absorbing arm (2); The energy-absorbing arm tilt to be connected on the side of energy-absorbing box body and and energy-absorbing box body integrative-structure; The side of energy-absorbing box body is provided with the first energy-absorbing groove (3), and energy-absorbing arm side is provided with the second energy-absorbing groove (11), and the end of energy-absorbing arm is provided with connecting pin (4).
2. auto against energy-absorbing box according to claim 1 is characterized in that, the angle of energy-absorbing arm and energy-absorbing box body is 45 ° ~ 70 °.
3. auto against energy-absorbing box according to claim 1 and 2; It is characterized in that; Energy-absorbing box body front-end and back-end all are hatch frame; The edge on every limit of energy-absorbing box body front-end and back-end hatch frame all is provided with inside flange (5), and the angle position of adjacent two edges is provided with energy-absorbing breach (6).
4. auto against energy-absorbing box according to claim 1 and 2 is characterized in that, the first energy-absorbing groove and the second energy-absorbing groove all are the arc of indent, and the width of notch is 1:1 ~ 1.5:1 with the ratio of the degree of depth.
5. auto against energy-absorbing box according to claim 1 and 2 is characterized in that the energy-absorbing box body is rectangular, on the side of connection energy-absorbing arm three first energy-absorbing grooves is set on the energy-absorbing box body, and four first energy-absorbing grooves are set respectively on other side.
6. auto against energy-absorbing box according to claim 5; It is characterized in that; The first energy-absorbing groove on each side of energy-absorbing box body is parallel to each other respectively; The first energy-absorbing groove on adjacent two sides links together successively and constitute the shaped as frame structure of three osed top shaped as frame structures and one one end opening from beginning to end, and three osed top shaped as frame structures are near energy-absorbing box body rear end, and the shaped as frame structure of an end opening is near energy-absorbing box body front end.
7. auto against energy-absorbing box according to claim 5 is characterized in that, the first energy-absorbing groove is obliquely installed on each side of energy-absorbing box body, the bevelled first energy-absorbing groove formation helicoidal structure that is connected in turn.
8. auto against energy-absorbing box according to claim 1 is characterized in that, the second energy-absorbing groove of each side links together and constitutes two osed top shaped as frame structures on the energy-absorbing arm.
9. auto against energy-absorbing box according to claim 1; It is characterized in that; Connecting pin has four ends from the energy-absorbing arm upwards to dig, and four connecting pins are two pairs and are arranged on up and down on the energy-absorbing arm, forms and the adaptive link slot (7) of following front cross rail between two pairs of connecting pins.
10. auto against energy-absorbing box according to claim 1 and 2 is characterized in that, the width of the first energy-absorbing groove on the energy-absorbing box body near energy-absorbing arm position to reducing successively away from energy-absorbing arm position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065027.XA CN102745159B (en) | 2012-03-13 | 2012-03-13 | Automobile crash energy-absorbing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065027.XA CN102745159B (en) | 2012-03-13 | 2012-03-13 | Automobile crash energy-absorbing box |
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| Publication Number | Publication Date |
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| CN102745159A true CN102745159A (en) | 2012-10-24 |
| CN102745159B CN102745159B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210065027.XA Active CN102745159B (en) | 2012-03-13 | 2012-03-13 | Automobile crash energy-absorbing box |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543667A (en) * | 1977-06-09 | 1979-01-11 | Mitsubishi Motors Corp | Shock absorber |
| US20010013706A1 (en) * | 1999-12-10 | 2001-08-16 | Daimlerchrysler Ag. | Device for the absorption of impact energy in motor vehicles and method of making same |
| JP2007261427A (en) * | 2006-03-28 | 2007-10-11 | Nikkeikin Aluminium Core Technology Co Ltd | Bumper structure |
| CN101316740A (en) * | 2005-09-27 | 2008-12-03 | 通用电气公司 | Bumper system with integrated energy absorber underbar |
| CN201849433U (en) * | 2010-10-19 | 2011-06-01 | 凌云工业股份有限公司 | Crash box structure capable of giving consideration to crash energy absorption and residual deformation for crash beam of automobile |
-
2012
- 2012-03-13 CN CN201210065027.XA patent/CN102745159B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543667A (en) * | 1977-06-09 | 1979-01-11 | Mitsubishi Motors Corp | Shock absorber |
| US20010013706A1 (en) * | 1999-12-10 | 2001-08-16 | Daimlerchrysler Ag. | Device for the absorption of impact energy in motor vehicles and method of making same |
| CN101316740A (en) * | 2005-09-27 | 2008-12-03 | 通用电气公司 | Bumper system with integrated energy absorber underbar |
| JP2007261427A (en) * | 2006-03-28 | 2007-10-11 | Nikkeikin Aluminium Core Technology Co Ltd | Bumper structure |
| CN201849433U (en) * | 2010-10-19 | 2011-06-01 | 凌云工业股份有限公司 | Crash box structure capable of giving consideration to crash energy absorption and residual deformation for crash beam of automobile |
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| Publication number | Publication date |
|---|---|
| CN102745159B (en) | 2014-09-10 |
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