Patent · US Active

Tubular beam of an automotive structure having an improved impact behavior

US9533641B2 · kind B2 · utility

3Cited by

3References

18Claims

0Family size

Assignee

CONSTELLIUM SINGEN GmbH · DE

Inventors

Matthias Kutscher · Konstanz, DE
Martin Feuerstein · Kirkland, US
Olivier Rebuffet · Grenoble, FR

Key dates

Filing date	Jan 12, 2012
Grant date	Jan 3, 2017
Priority date	—
Expiry date	Sep 20, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R2019/182
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Bumper crossbeam (10, 10′), having a plane of symmetry (Y) and globally oriented in a direction (T) perpendicular to the plane of symmetry (Y), comprising two attachment areas (12a, 12b) symmetrically arranged with respect to the plane of symmetry (Y) and distant from each other by a distance D, said beam being designed to absorb the energy dissipated by a shock generated by a force substantially horizontal and oriented in a direction (L) perpendicular to said direction (T), made from a globally tubular body (11) with a monotonically varying nominal cross-section (Sn) over most of its length between said attachment areas (12a, 12b), except in two weakened areas (15a, 15b), which are symmetrical with respect to the plane of symmetry (Y), which are remote from the said plane of symmetry by a distance of between 0.10*D and 0.40*D, wherein the second moment of area about the axis (Z) perpendicular to the plane (L, T) is lower in the said weakened areas than expected from the nominal cross-section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.