Patent ID: 11866097
Assignee: KOLON GLOTECH, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 12:
13. 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; and
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, wherein:
the core member comprises a horizontal part coupled to an upper surface of the lower layer, a reinforcing part protruded from the horizontal part in an upward direction of the vehicle to form an inner space therein, and extension parts respectively extended from front and rear ends of the horizontal part in forward and backward directions of the vehicle; and
the upper layer is formed to have a shape covering the reinforcing part and the extension parts of the core member.