Structure for reinforcing automotive cover member of synthetic resin

Abstract

A resinforced cover member for automobile made of a synthetic resin comprising a lid body having a generally rectangular shape and a plurality of ribs extending generally perpendicularly from a bottom face of the lid body. The ribs include various types of ribs. A first set of at least two peripheral ribs extend along one longer side of the lid body while a second set of at least two peripheral ribs extend along the other longer side. A third pair and a fourth pair of peripheral ribs extend along the shorter sides of the lid body. A first set of angular ribs continuously extend to connect a generally central point of the one longer side of the lid body and the two end portions of the other longer side. A second set of angular ribs continuously extend to connect a generally central point of the other longer side and the two end portions of the one longer side. Additional angular ribs can be arranged parallel to the first and second set of angular ribs. First short ribs can connect together the first set of at least two peripheral ribs and second short ribs can connect together the second set of at least two peripheral ribs. A first closure plate can be fixed to the first set of peripheral ribs and the first short ribs defining plural closed compartments and a box-like girder. A second closure plate can be fixed to the second set of peripheral ribs and the second short ribs defining further plural closed compartments and a second box shaped girder.