Crash Box and a Method of Fastening a Bumper Beam
AssigneeGestamp Hardtech AB
InventorLars Karlander
Life of this patent
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Abstract
A bumper beam is fastened to a bumper beam (11) of a vehicle (13) with intermediate crash boxes (12). Each crash box comprises a left member (20) and a right member (21) formed of sheet metal, which are jointed together and have top portions (24,25) overlapping each other and bottom portions (22,23) overlapping each other to form double-sheet tabs (34,35). These tabs extend out over the top and bottom surfaces of the bumper beam and are fastened to these surfaces.
Claims7
A crash box for supporting a bumper beam (11), characterised in that it comprises a left member (20) and a right member (21), which are jointed together and have top portions (24, 25) overlapping each other and bottom portions (22, 23) overlapping each other to form double-sheet tabs (34 and 35 respectively) adapted for contact with and for fastening of the bumper beam.
A method of fastening a bumper beam (11) to a vehicle by intermediate crash boxes (12) of formed sheet metal, characterised in
- forming a left member (20) and a right member (21) for each crash box and jointing them with their top portions (24, 25) overlapping each other and their bottom portions (22, 23) overlapping each other,
- adapting the sides of the crash box to abutment with the bumper beam such that the top portions and the bottom portions form tabs of double-sheet (24, 25 and 22, 23, respectively) extending out over the upper and bottom surfaces of the bumper beam and
- fastening the tabs to the bumper beam.
Dependencies are inferred from the claim text.