发明名称 |
BUMPER SYSTEM INCORPORATING THERMOFORMED ENERGY ABSORBER |
摘要 |
A bumper system includes a tubular beam and a thermoformed energy absorber with crush boxes formed into a base flange, such as by vacuum or thermoforming processes. The crush boxes have planar energy-absorbing sidewalls a depth of about 10 mm to 35 mm, wall thicknesses of about 1 mm to 3 mm, and are formed from polyethylene or other thermoform materials having a memory. The base flange can include thermoformed features engaging recesses in the beam, and is combinable with injection-molded or foam energy absorbers for design flexibility. In one form, the energy absorber includes a thermoformed first sheet forming crush boxes and a second sheet bonded to the first sheet to define apertured air pockets. A method of manufacture includes providing a plurality of separately usable thermoformed energy absorbers which can be used in conjunction with a common vehicle structure to vary the absorption characteristics of a vehicle bumper. |
申请公布号 |
EP1651471(A4) |
申请公布日期 |
2009.01.07 |
申请号 |
EP20030817828 |
申请日期 |
2003.12.15 |
申请人 |
NETSHAPE INTERNATIONAL, LLC |
发明人 |
EVANS, DARIN;GUILES, MELVIN |
分类号 |
B60R19/12;B60R19/18 |
主分类号 |
B60R19/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|