WO2020173113A1 - M-shaped crash box structure for an automobile front end and assembly thereof - Google Patents

M-shaped crash box structure for an automobile front end and assembly thereof Download PDF

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Publication number
WO2020173113A1
WO2020173113A1 PCT/CN2019/113664 CN2019113664W WO2020173113A1 WO 2020173113 A1 WO2020173113 A1 WO 2020173113A1 CN 2019113664 W CN2019113664 W CN 2019113664W WO 2020173113 A1 WO2020173113 A1 WO 2020173113A1
Authority
WO
WIPO (PCT)
Prior art keywords
box structure
crash box
supporting wall
protruding part
shaped
Prior art date
Application number
PCT/CN2019/113664
Other languages
French (fr)
Inventor
Xiaoming Zhang
Chunhuan DU
Original Assignee
Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd.
Compagnie Plastic Omnium
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910151546.XA external-priority patent/CN109733309A/en
Priority claimed from CN201920254805.7U external-priority patent/CN209581390U/en
Application filed by Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd., Compagnie Plastic Omnium filed Critical Yanfeng Plastic Omnium Automotive Exterior Systems Co., Ltd.
Publication of WO2020173113A1 publication Critical patent/WO2020173113A1/en

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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
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

Definitions

  • the invention relates to a crash box structure for an automobile front end, and more particularly, an M- shaped crash box structure for an automobile front end and an assembly thereof.
  • An objective of the invention is to provide an M-shaped crash box structure for an automobile front end and an assembly thereof, thus solving the problem that absorber structures in the prior art are easily permanently deformed or damaged during an impact.
  • an M-shaped crash box structure for an automobile front end is provided.
  • the M-shaped crash box structure is of a form that has an M-shaped cross section, and comprises: a first protruding part and a second protruding part protruding and extending towards the +X direction of the automobile, and a depressed part located between the first protruding part and the second protruding part.
  • the first protruding part extends in the Z direction of the automobile above the second protruding part and spaced apart from the second protruding part.
  • the X, Y and Z directions refer to the XYZ three-dimensional reference system of an automobile that a person skilled in the art knows very well, wherein particularly the +X direction is the direction pointed by the head of a normally running automobile.
  • the first protruding part forms a first n-shaped inner space inside by means of a first supporting wall, a first flat top and a second supporting wall.
  • the second protruding part forms a second n-shaped inner space inside by means of a third supporting wall, a second flat top and a fourth supporting wall.
  • the depressed part forms a third n-shaped inner space inside by means of the second support wall, a flat bottom and the third supporting wall.
  • the outer surface of the first supporting wall and the outer surface of the second supporting wall are provided with several reinforcing ribs.
  • the reinforcing ribs on the outer surface of the first supporting wall are offset in the Y direction of the automobile from the reinforcing ribs on the outer surface of the second supporting wall.
  • the outer surface of the third supporting wall and the outer surface of the fourth supporting wall are provided with several reinforcing ribs.
  • the reinforcing ribs on the outer surface of the third supporting wall are offset in the Y direction of the automobile from the reinforcing ribs on the outer surface of the fourth supporting wall.
  • the flat bottom is provided with reinforcing ribs, that are preferably offset from both the reinforcing ribs on the outer surface of the second supporting wall and the reinforcing ribs on the outer surface of the third supporting wall.
  • the second supporting wall and the third supporting wall form, respectively, with the flat bottom, an angle between 95° and 155°.
  • a height HI in the Z direction of the first flat top of the first protruding part is 8 to 12 cm.
  • a height H2 in the Z direction of the second flat top of the second protruding part is 8 to 12 cm.
  • the M-shaped crash box structure is made by injection molding of polypropylene material.
  • an assembly comprising the M-shaped crash box structure described above is further provided, wherein the assembly further comprises a half M-shaped crash box structure or another M-shaped crash box structure that is connected below the M-shaped crash box structure.
  • an M-shaped crash box structure and an assembly thereof are provided, wherein the M-shaped crash box structure is equivalent to a stacking of three conventional crash boxes, thus dispersing the energy during an impact into three energy absorbing areas, and therefore better absorbing the energy during an impact.
  • the M-shaped crash box structure self-recovers to a certain degree after an impact, avoiding permanent deformation and damage of conventional absorbers or crash boxes after an impact.
  • the invention provides an M-shaped crash box structure that is structurally stable and more efficient in energy absorption, and in the meanwhile possesses a certain degree of self-recovery, and an assembly thereof.
  • Figure 1 is a sectional view of an absorber structure in the prior art
  • Figure 2 is a sectional view of another absorber structure in the prior art
  • Figure 3 is a front view of an M-shaped crash box structure according to a preferred embodiment of the invention.
  • Figure 4 is a left view of the M-shaped crash box structure shown in Figure 3;
  • Figure 5 is a sectional view along the sectional line A-A in Figure 3;
  • Figures 6 A, 6B and 6C are, respectively, schematic diagrams of the M-shaped crash box structure shown in Figure 3 before an impact, during an impact and during recovery after an impact.
  • an M-shaped crash box structure according to a preferred embodiment of the invention is used for being provided at the front of an automobile and absorbing energy generated during an impact.
  • the M-shaped crash box structure 100 is of a form that has an M-shaped cross section, and comprises: a first protruding part 10 and a second protruding part 20 extending and protruding towards the +X direction of the automobile, and a depressed part 30 located between the first protruding part 10 and the second protruding part 20.
  • the first protruding part 10 extends in the Z direction of the automobile above the second protruding part 20 and spaced apart from the second protruding part 20.
  • the first protruding part 10 forms a first n-shaped inner space inside by means of a first supporting wall 11 , a first flat top 12 and a second supporting wall 13.
  • the second protruding part 20 forms a second n-shaped inner space inside by means of a third supporting wall 21, a second flat top 22 and a fourth supporting wall 23.
  • the depressed part 30 forms a third n-shaped inner space inside by means of the second supporting wall 13, a flat bottom 31 and the third supporting wall 21.
  • the M-shaped crash box structure is equivalent to a stacking of three conventional crash boxes (see Figure 2), and can disperse the energy during an impact into three energy absorbing areas and better absorb the energy during an impact.
  • the outer surface of the first supporting wall 11 and the outer surface of the second supporting wall 13 are provided with several reinforcing ribs 11a and 13a.
  • the reinforcing ribs 11a on the outer surface of the first supporting wall 11 are offset in the Y direction of the automobile from the reinforcing ribs 13a on the outer surface of the second supporting wall 13, thus better increasing the strength of the first protruding part 10.
  • the outer surface of the third supporting wall 21 and the outer surface of the fourth supporting wall 23 are provided with several reinforcing ribs 21a and 23a.
  • the reinforcing ribs 21a on the outer surface of the third supporting wall 21 are offset in the Y direction of the automobile from the reinforcing ribs 23 a on the outer surface of the fourth supporting wall 23, thus better increasing the strength of the second protruding part 20.
  • the flat bottom 31 is also provided with reinforcing ribs 31a that are preferably offset from both the reinforcing ribs 13a and the reinforcing ribs 21a. It has been proven by experiment that this arrangement can provide an optimal strength.
  • the angle a formed between the second supporting wall 13 and the flat bottom 31 is between 95° and 155°
  • the angle b formed between the third supporting wall 21 and the flat bottom 31 is also between 95° and 155°.
  • the height HI in the Z direction of the first flat top 12 of the first protruding part 10 is 8 to 12 cm.
  • the height H2 in the Z direction of the second flat top 22 of the second protruding part 20 is also 8 to 12 cm.
  • the M-shaped crash box structure is preferably made by injection molding of polypropylene material.
  • the M-shaped crash box structure according to a preferred embodiment of the invention described above when it has not yet undergone an impact with an impacting object 200, it maintains the form of the M-shaped cross section, as shown in Figure 6 A; when an impact occurs at the front end of the vehicle, as shown in Figure 6B, the M-shaped crash box structure undergoes slight deformation. As the
  • M-shaped crash box structure has three n-shaped inner spaces and is equivalent to a stacking of three conventional crash boxes (see Figure 2), it can disperse the energy during the impact into three energy absorbing areas and thus better absorb the energy during the impact. Thanks to the specific form of the M-shaped crash box structure itself, it can self-recover to a certain degree after an impact, as shown in Figure 6C, thus avoiding the permanent deformation and damage of conventional absorbers or crash boxes after an impact.
  • the invention also provides an assembly comprising the M-shaped crash box structure described above.
  • the assembly further comprises a half M-shaped crash box structure (an n-shaped crash box) or another M-shaped crash box structure and so on that is connected below the M-shaped crash box structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

An M-shaped crash box structure (100) for an automobile front end and an assembly thereof are provided. The M-shaped crash box structure (100) is of a form that has an M-shaped cross section, and comprises: a first protruding part (10) and a second protruding part (20) extending and protruding towards the +X direction of the automobile, and a depressed part (30) located between the first protruding part (10) and the second protruding part (20). The first protruding part (10) extends in the Z direction of the automobile above the second protruding part (20) and spaced apart from the second protruding part (20). The above-mentioned M-shaped crash box structure is structurally stable and more efficient in energy absorption, and in the meanwhile possesses a certain degree of self-recovery. In addition, the assembly comprising the M-shaped crash box structure is provided.

Description

M-Shaped Crash Box Structure for an Automobile Front End and Assembly Thereof
Technical Field
The invention relates to a crash box structure for an automobile front end, and more particularly, an M- shaped crash box structure for an automobile front end and an assembly thereof.
Background
In current automobile models, there are mainly two types of crash box structure used on an automobile front end: energy absorbers 101 made of EPP foam, as shown in Figure 1; and energy absorbers 101’ made of PP, as shown in Figure 2. Energy absorbers 101 made of EPP foam and energy absorbers 101’ made of PP are assembled with, respectively, supports 102 and 102’ for protecting the lower legs of pedestrians (referred to below simply as lower leg protection supports), for absorbing energy generated by an impact on an automobile front end. However, a disadvantage of those absorber structures is that, during an impact, they are easily permanently deformed or damaged.
Summary of the Invention
An objective of the invention is to provide an M-shaped crash box structure for an automobile front end and an assembly thereof, thus solving the problem that absorber structures in the prior art are easily permanently deformed or damaged during an impact.
In order to solve the technical problem described above, the invention adopts the following technical solutions: According to a first aspect of the invention, an M-shaped crash box structure for an automobile front end is provided. The M-shaped crash box structure is of a form that has an M-shaped cross section, and comprises: a first protruding part and a second protruding part protruding and extending towards the +X direction of the automobile, and a depressed part located between the first protruding part and the second protruding part. The first protruding part extends in the Z direction of the automobile above the second protruding part and spaced apart from the second protruding part.
It should be understood that in the context of the invention, the X, Y and Z directions refer to the XYZ three-dimensional reference system of an automobile that a person skilled in the art knows very well, wherein particularly the +X direction is the direction pointed by the head of a normally running automobile.
Preferably, the first protruding part forms a first n-shaped inner space inside by means of a first supporting wall, a first flat top and a second supporting wall.
Preferably, the second protruding part forms a second n-shaped inner space inside by means of a third supporting wall, a second flat top and a fourth supporting wall. Preferably, the depressed part forms a third n-shaped inner space inside by means of the second support wall, a flat bottom and the third supporting wall.
Preferably, the outer surface of the first supporting wall and the outer surface of the second supporting wall are provided with several reinforcing ribs. The reinforcing ribs on the outer surface of the first supporting wall are offset in the Y direction of the automobile from the reinforcing ribs on the outer surface of the second supporting wall. Preferably, the outer surface of the third supporting wall and the outer surface of the fourth supporting wall are provided with several reinforcing ribs. The reinforcing ribs on the outer surface of the third supporting wall are offset in the Y direction of the automobile from the reinforcing ribs on the outer surface of the fourth supporting wall.
Preferably, the flat bottom is provided with reinforcing ribs, that are preferably offset from both the reinforcing ribs on the outer surface of the second supporting wall and the reinforcing ribs on the outer surface of the third supporting wall.
Preferably, the second supporting wall and the third supporting wall form, respectively, with the flat bottom, an angle between 95° and 155°.
Preferably, a height HI in the Z direction of the first flat top of the first protruding part is 8 to 12 cm.
Preferably, a height H2 in the Z direction of the second flat top of the second protruding part is 8 to 12 cm.
Preferably, the M-shaped crash box structure is made by injection molding of polypropylene material.
According to a second aspect of the invention, an assembly comprising the M-shaped crash box structure described above is further provided, wherein the assembly further comprises a half M-shaped crash box structure or another M-shaped crash box structure that is connected below the M-shaped crash box structure.
According to the invention, an M-shaped crash box structure and an assembly thereof are provided, wherein the M-shaped crash box structure is equivalent to a stacking of three conventional crash boxes, thus dispersing the energy during an impact into three energy absorbing areas, and therefore better absorbing the energy during an impact. In the meanwhile, the M-shaped crash box structure self-recovers to a certain degree after an impact, avoiding permanent deformation and damage of conventional absorbers or crash boxes after an impact.
In sum, the invention provides an M-shaped crash box structure that is structurally stable and more efficient in energy absorption, and in the meanwhile possesses a certain degree of self-recovery, and an assembly thereof. Brief Description of the Drawings
Figure 1 is a sectional view of an absorber structure in the prior art;
Figure 2 is a sectional view of another absorber structure in the prior art;
Figure 3 is a front view of an M-shaped crash box structure according to a preferred embodiment of the invention;
Figure 4 is a left view of the M-shaped crash box structure shown in Figure 3;
Figure 5 is a sectional view along the sectional line A-A in Figure 3;
Figures 6 A, 6B and 6C are, respectively, schematic diagrams of the M-shaped crash box structure shown in Figure 3 before an impact, during an impact and during recovery after an impact.
Detailed Description of the Embodiments
The invention is further described below in reference to specific embodiments. It should be understood that, the embodiments below are used merely for describing the invention, and not for limiting the scope of the invention.
As shown in reference to Figures 3, 4 and 5, an M-shaped crash box structure according to a preferred embodiment of the invention is used for being provided at the front of an automobile and absorbing energy generated during an impact.
The M-shaped crash box structure 100 is of a form that has an M-shaped cross section, and comprises: a first protruding part 10 and a second protruding part 20 extending and protruding towards the +X direction of the automobile, and a depressed part 30 located between the first protruding part 10 and the second protruding part 20. The first protruding part 10 extends in the Z direction of the automobile above the second protruding part 20 and spaced apart from the second protruding part 20. As shown in Figure 5, the first protruding part 10 forms a first n-shaped inner space inside by means of a first supporting wall 11 , a first flat top 12 and a second supporting wall 13.
The second protruding part 20 forms a second n-shaped inner space inside by means of a third supporting wall 21, a second flat top 22 and a fourth supporting wall 23.
The depressed part 30 forms a third n-shaped inner space inside by means of the second supporting wall 13, a flat bottom 31 and the third supporting wall 21.
Thus, it can be seen that the M-shaped crash box structure is equivalent to a stacking of three conventional crash boxes (see Figure 2), and can disperse the energy during an impact into three energy absorbing areas and better absorb the energy during an impact.
As shown in Figure 4, the outer surface of the first supporting wall 11 and the outer surface of the second supporting wall 13 are provided with several reinforcing ribs 11a and 13a. The reinforcing ribs 11a on the outer surface of the first supporting wall 11 are offset in the Y direction of the automobile from the reinforcing ribs 13a on the outer surface of the second supporting wall 13, thus better increasing the strength of the first protruding part 10.
The outer surface of the third supporting wall 21 and the outer surface of the fourth supporting wall 23 are provided with several reinforcing ribs 21a and 23a. The reinforcing ribs 21a on the outer surface of the third supporting wall 21 are offset in the Y direction of the automobile from the reinforcing ribs 23 a on the outer surface of the fourth supporting wall 23, thus better increasing the strength of the second protruding part 20.
Preferably, the flat bottom 31 is also provided with reinforcing ribs 31a that are preferably offset from both the reinforcing ribs 13a and the reinforcing ribs 21a. It has been proven by experiment that this arrangement can provide an optimal strength. Preferably, as shown in Figure 5, the angle a formed between the second supporting wall 13 and the flat bottom 31 is between 95° and 155°, and the angle b formed between the third supporting wall 21 and the flat bottom 31 is also between 95° and 155°.
According to a preferred embodiment of the invention, the height HI in the Z direction of the first flat top 12 of the first protruding part 10 is 8 to 12 cm. Preferably, the height H2 in the Z direction of the second flat top 22 of the second protruding part 20 is also 8 to 12 cm.
The M-shaped crash box structure is preferably made by injection molding of polypropylene material. With the M-shaped crash box structure according to a preferred embodiment of the invention described above, when it has not yet undergone an impact with an impacting object 200, it maintains the form of the M-shaped cross section, as shown in Figure 6 A; when an impact occurs at the front end of the vehicle, as shown in Figure 6B, the M-shaped crash box structure undergoes slight deformation. As the
M-shaped crash box structure has three n-shaped inner spaces and is equivalent to a stacking of three conventional crash boxes (see Figure 2), it can disperse the energy during the impact into three energy absorbing areas and thus better absorb the energy during the impact. Thanks to the specific form of the M-shaped crash box structure itself, it can self-recover to a certain degree after an impact, as shown in Figure 6C, thus avoiding the permanent deformation and damage of conventional absorbers or crash boxes after an impact.
According to another preferred embodiment of the invention, the invention also provides an assembly comprising the M-shaped crash box structure described above. The assembly further comprises a half M-shaped crash box structure (an n-shaped crash box) or another M-shaped crash box structure and so on that is connected below the M-shaped crash box structure. What have been described above are merely preferred embodiments of the invention, and are not to limit the scope of the invention. The embodiments of the invention described above can be subject to various modifications. All simple, equivalent modifications and embellishments made based on the contents of the claims and the specification of the invention fall within the scope of protection of the claims of the invention. What has not been described in detail in the invention is conventional technology.

Claims

Claims
1. An M-shaped crash box structure for an automobile front end, wherein the M-shaped crash box structure (100) is of a form that has an M-shaped cross section, and comprises: a first protruding part (10) and a second protruding part (20) extending and protruding towards the +X direction of the automobile, and a depressed part (30) located between the first protruding part (10) and the second protruding part (20), the first protruding part (10) extending in the Z direction of the automobile above the second protruding part (20) and spaced apart from the second protruding part (20).
2. The M-shaped crash box structure according to claim 1, wherein the first protruding part (10) forms a first n-shaped inner space inside by means of a first supporting wall (11), a first flat top (12) and a second supporting wall (13).
3. The M-shaped crash box structure according to claim 2, wherein the second protruding part (20) forms a second n-shaped inner space inside by means of a third supporting wall (21), a second flat top (22) and a fourth supporting wall (23).
4. The M-shaped crash box structure according to claim 3, wherein the depressed part (30) forms a third n-shaped inner space inside by means of the second support wall (13), a flat bottom (31) and the third supporting wall (21).
5. The M-shaped crash box structure according to any one of claims 2-4, wherein the outer surface of the first supporting wall (11) and the outer surface of the second supporting wall (13) are provided with several reinforcing ribs (11a, 13a), the reinforcing ribs (11a) on the outer surface of the first supporting wall (11) being offset in the Y direction of the automobile from the reinforcing ribs (13 a) on the outer surface of the second supporting wall (13).
6. The M-shaped crash box structure according to any one of claims 3-4 , wherein the outer surface of the third supporting wall (21) and the outer surface of the fourth supporting wall (23) are provided with several reinforcing ribs (21a, 23a), the reinforcing ribs (21a) on the outer surface of the third supporting wall (21) being offset in the Y direction of the automobile from the reinforcing ribs (23 a) on the outer surface of the fourth supporting wall (23).
7. The M-shaped crash box structure according to claim 4, wherein the flat bottom (31) is provided with reinforcing ribs (31a) that are preferably offset from both the reinforcing ribs (13a) on the outer surface of the second supporting wall (13) and the reinforcing ribs (21a) on the outer surface of the third supporting wall (21).
8. The M-shaped crash box structure according to claim 4 or 7, wherein the second supporting wall (13) and the third supporting wall (21) form, respectively, with the flat bottom (31), an angle between 95° and 155°.
9. The M-shaped crash box structure according to any one of claims 2-8, wherein a height (HI) in the Z direction of the first flat top (12) of the first protruding part (10) is 8 to 12 cm.
10. The M-shaped crash box structure according to any one of claims 3-4 and 6-8, wherein a height (H2) in the Z direction of the second flat top (22) of the second protruding part (20) is 8 to 12 cm.
11. The M-shaped crash box structure according to any one of claims 1-10, being made by injection molding of polypropylene material.
12. An assembly comprising the M-shaped crash box structure according to any one of claims 1 to 11, wherein the assembly further comprises a half M-shaped crash box structure or another M-shaped crash box structure that is connected below the M-shaped crash box structure.
PCT/CN2019/113664 2019-02-28 2019-10-28 M-shaped crash box structure for an automobile front end and assembly thereof WO2020173113A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201910151546.XA CN109733309A (en) 2019-02-28 2019-02-28 A kind of M type energy-absorbing box structure and its assembly for automotive front end
CN201920254805.7 2019-02-28
CN201920254805.7U CN209581390U (en) 2019-02-28 2019-02-28 A kind of M type energy-absorbing box structure and its assembly for automotive front end
CN201910151546.X 2019-02-28

Publications (1)

Publication Number Publication Date
WO2020173113A1 true WO2020173113A1 (en) 2020-09-03

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PCT/CN2019/113664 WO2020173113A1 (en) 2019-02-28 2019-10-28 M-shaped crash box structure for an automobile front end and assembly thereof

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WO (1) WO2020173113A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030020291A1 (en) * 2001-07-16 2003-01-30 Compagnie Plastic Omnium Motor vehicle bumper beam, and a bumper fitted with such a beam
US20030080573A1 (en) * 2001-10-29 2003-05-01 Kees Marijnissen Bumper assembly including an energy absorber
CN1558845A (en) * 2001-09-12 2004-12-29 ͨ�õ�����˾ Bumper beam with crash can
CN1558846A (en) * 2001-09-12 2004-12-29 ͨ�õ�����˾ Bumper beam and bumper assembly including a bumper beam
CN1849234A (en) * 2003-07-03 2006-10-18 奈特夏普国际有限公司 Bumper system incorporating thermoformed energy absorber
CN101090842A (en) * 2005-01-05 2007-12-19 通用电气公司 Bumper system with energy absorber
CN201890203U (en) * 2010-11-04 2011-07-06 上海汽车集团股份有限公司 Energy absorption box and energy absorption device
CN103287381A (en) * 2013-06-18 2013-09-11 延锋彼欧汽车外饰系统有限公司 Energy absorption device of automobile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030020291A1 (en) * 2001-07-16 2003-01-30 Compagnie Plastic Omnium Motor vehicle bumper beam, and a bumper fitted with such a beam
CN1558845A (en) * 2001-09-12 2004-12-29 ͨ�õ�����˾ Bumper beam with crash can
CN1558846A (en) * 2001-09-12 2004-12-29 ͨ�õ�����˾ Bumper beam and bumper assembly including a bumper beam
US20030080573A1 (en) * 2001-10-29 2003-05-01 Kees Marijnissen Bumper assembly including an energy absorber
CN1849234A (en) * 2003-07-03 2006-10-18 奈特夏普国际有限公司 Bumper system incorporating thermoformed energy absorber
CN101090842A (en) * 2005-01-05 2007-12-19 通用电气公司 Bumper system with energy absorber
CN201890203U (en) * 2010-11-04 2011-07-06 上海汽车集团股份有限公司 Energy absorption box and energy absorption device
CN103287381A (en) * 2013-06-18 2013-09-11 延锋彼欧汽车外饰系统有限公司 Energy absorption device of automobile

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