Shape Corporation

Volkswagen Ag

Vidya Revankar

Daniel D Ralston

Darin Evans

Amit Ashok Kulkarni

Ngoc-Dang Nguyen

David R Seiter

Olaf Insel

Yassine Ghozzi

Alexander Besch

Oliver Knoke

An apparatus is provided for improved pedestrian safety during impact by a vehicle, where the vehicle includes a bumper, a hood, and structural components located generally above the bumper and in front of the hood. The apparatus includes an energy absorber with at least one crush lobe attached to a horizontal top beam of the bulkhead in a low-visible position when the hood is closed, but with the energy absorber positioned to crush and absorb energy to reduce injury to a pedestrian's upper leg when a pedestrian is impacted by the vehicle. The energy absorber is made of polymeric material, and the crush lobe is hollow and shaped to crush upon impact for maximum energy absorption.

Vehicle energy absorber for pedestrian's upper leg

An energy absorbing system includes a hood with inner and outer panels defining a rear edge cavity, and a pair of polymeric energy absorbers in the cavity. The hood and energy absorber are tuned to minimize an HIC value when a pedestrian's head contacts the hood during an impact to absorb energy prior to the hood bottoming out on the plenum of the vehicle. The energy absorber is preferably made of a polymeric material capable of withstanding high temperatures associated with going through a paint over or e-coat process, such as high temperature nylon. The illustrated energy absorber has a hat-shaped cross section and includes criss-crossing flanges tuned to provide an optimal force-deflection curve during impact.

Hood pedestrian energy absorber

A bumper system includes an injection molded energy absorber of polymeric material having hollow longitudinally-spaced lobes configured to crush and absorb energy during a pedestrian impact, and straps interconnecting adjacent lobes. The lobes are particularly sized and dimensioned, including potentially external ribs and/or apertures in corners, to provide a relatively uniform impact energy absorption during an impact stroke during crush of the shear walls of the lobes, such as within +/&#x2212;30% or more preferably within +/&#x2212;20% of a desired amount regardless of a specific location of impact, along a selected center portion of the energy absorber. A reason for the uniformity is to promote pedestrian safety regardless of the specific location where a pedestrian's leg strikes the energy absorber.

Energy absorber with lobes providing uniform pedestrian impact

Growing community of inventors

Grand Haven, MI, United States of America

Vidya Revankar