| 摘要 |
This assembly comprises a structural frame (2) and a plastic material bumper (4) formed so as to match the shape of a bumper skin and arranged against the structural frame (2), said bumper (4) comprising an upper cross member (34) and a lower cross member (36) interconnected via vertical connecting beams (38), the upper (34) and lower (36) cross members each having a central portion (48) and two lateral portions (50) arranged on either side of the central portion (48), said cross members (34, 36) comprising a plurality of ribs (52). The number of ribs (52) in the central portion (48) of the upper cross member (34) and/or of the lower cross member (36) is greater than the number of ribs (52) of each lateral portion (50) of the upper cross member (34) and/or of the lower cross member (36).
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