| 摘要 |
<p>Anti-intrusion bar (1), in a first not deformed configuration, delimited by a first impact plane (K1) and by a deformation plane (S) which are parallel among them, their cross section presenting: a first U-shaped wall (Z) basically tangential to the first plane (K1); two second L-shaped walls (6) connected to the first wall (2) externally to the first wall (2) itself, the corners of the second walls (6) being tangential to the deformation plane (S); and two third walls (12) connected to the second walls (6) externally to the second walls (6) themselves, and oriented according to the respective acute angles in relationship with a second impact plane (K2), passing through the opposite ends of the second walls (6) themselves; in a deformed configuration of the bar (1), the first and the second impact plane (K1, K2) being basically superposed among them, and the cross section of the bar (1) itself taking a so-called "fret" configuration. <IMAGE></p> |
