Patent ID: 9707914
Date: 2017-07-18
CPC Classifications: B21D,B60R

Claim:
1. An attachment device for mounting a bumper cross-beam onto a vehicle structure, said attachment device comprising: a first end configured to be fixed to said vehicle structure, and a second end configured to be attached to said bumper cross-beam, said second end comprising opposite double-walled flanges which are spaced apart from each other by a distance H, wherein said attachment device is made from a hollow section profile, the periphery of which comprises opposite side walls and substantially parallel opposite outer walls, wherein said hollow section profile comprises opposite peripheral chambers, each peripheral chamber being at least delimited by one of said opposite outer wall and an inner wall, which is substantially parallel to said outer wall and extends between said opposite side walls, wherein said inner walls are spaced apart from each other by a distance Hi, wherein each of said opposite double-walled flanges results from bringing closer together the outer wall and the inner wall of a peripheral chamber until they are in contact, such that said peripheral chamber collapses, wherein the distance H is strictly greater than the distance Hi, and wherein at least one of said opposite double-walled flanges results from pushing the inner wall towards the outer wall of the peripheral chamber to be collapsed.