Crash box and bumper for a motor vehicle

a technology for motor vehicles and bumpers, applied in bumpers, vehicle safety arrangments, transportation and packaging, etc., can solve the problems of ineffective utilization of available space for energy absorption, deformation path, and low lateral stiffness of slide-in tubes of this type, so as to improve side stiffness, improve deformation and folding process, and adjust the stiffness of the collar
US20080224487A1Inactive Publication Date: 2008-09-18BENTELER AUTOMOBILTECHNIK GMBH
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
BENTELER AUTOMOBILTECHNIK GMBH
Publication Date
2008-09-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A crash box for placement between a bumper beam and a side rail of a motor vehicle includes a longitudinal profile made of two U-shaped shells having overlapping ends sized to realize a material doubling for increasing side stiffness and to suit the side stiffness to a load level. A flange plate is provided on a side-rail-proximal end of the longitudinal profile and has an opening for passage of the longitudinal profile. The side-rail-proximal end of the longitudinal profile is configured with a collar which is turned outwards. The collar rests against the flange plate and is joined with the flange plate. In the event of a collision, the longitudinal profile of the crash box is moved into the side rail as the longitudinal profile folds into the side rail starting from the flange plate, while the side-rail-proximal end of the longitudinal profile remains secured to the flange plate.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This application claims the priority of German Patent Application, Serial No. 10 2007 012 137.9, filed Mar. 12, 2007, pursuant to 35 U.S.C. 119(a)-(d), the content of which is incorporated herein by reference in its entirety as if fully set forth herein.BACKGROUND OF THE INVENTION

[0002] The present invention relates to a crash box for placement between a bumper beam and a side rail of a motor vehicle, and to a bumper provided with such a crash box.

[0003] Nothing in the following discussion of the state of the art is to be construed as an admission of prior art.

[0004] A standard bumper is typically mounted on the front or rear of a motor vehicle to absorb impact energy and thereby prevent damage to the vehicle structure in the event of a frontal or rear impact. The bumper typically includes a bumper beam which is mounted to the side rails of the vehicle frame through intervention of crash boxes. The bumper beam is provided to introduce energ...

Claims

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