US 11,866,097 B2
Lower cross member of vehicle
Hyun Sik Kim, Seoul (KR); Sang Yoon Park, Seoul (KR); Deok Hwa Hong, Gyeonggi-do (KR); Hee Seouk Chung, Gyeonggi-do (KR); Byeong Cheon Lee, Seoul (KR); Yeun Ho Yu, Gyeongsangnam-do (KR); Young Gyu Kim, Gyeongsangnam-do (KR); Jeong Wan Han, Gyeongsangnam-do (KR); Hyeon Seok Do, Daegu (KR); Hyun Kyu Shin, Seoul (KR); Cheol Min Nam, Seoul (KR); Kum Soo Bae, Seoul (KR); Seong Jong Kim, Gyeonggi-do (KR); and Jun Youp Kim, Daejeon (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Kolonglotech, Inc., Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and KOLONGLOTECH, Inc., Seoul (KR)
Filed on Aug. 17, 2020, as Appl. No. 16/994,880.
Claims priority of application No. 10-2019-0167866 (KR), filed on Dec. 16, 2019.
Prior Publication US 2021/0179190 A1, Jun. 17, 2021
Int. Cl. B62D 25/20 (2006.01); B62D 29/04 (2006.01); B32B 5/26 (2006.01)
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
OG exemplary drawing
 
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.