CPC B62D 25/20 (2013.01) [B32B 5/26 (2013.01); B62D 29/041 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0269 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); B32B 2605/00 (2013.01)] | 13 Claims |
1. A lower cross member of a vehicle, comprising:
a core member disposed on a vehicle floor so as to extend in a width direction of the vehicle, formed of a composite material comprising unidirectional carbon fiber or bidirectional carbon fiber, and having a cross-section comprising at least one closed curve;
a lower layer extended in an extending direction of the core member, disposed between the core member and the vehicle floor, and formed of a composite material comprising a first multi-axial glass fabric;
an upper layer extended in the extending direction of the core member, disposed on an upper surface of the core member, and formed of a composite material comprising a second multi-axial glass fabric; and
at least one inner member coupled to an inner circumferential surface of the core member along the closed curve formed by the cross-section of the core member, extended in the extending direction of the core member, and formed of a composite material comprising a third multi-axial glass fabric.
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