US 12,252,180 B2
Lower cross member for vehicle
Sang Yoon Park, Seoul (KR); Seung Chan Lee, Gyeonggi-do (KR); Yong Beom Lee, Seoul (KR); Pil Won Kang, Seoul (KR); Hyun Sik Kim, Seoul (KR); Sang Sun Park, Gyeonggi-do (KR); Hee Seouk Chung, Gyeonggi-do (KR); Seung Uk Kang, Gyeonggi-do (KR); Chi Hoon Choi, Gyeonggi-do (KR); Seong Jong Kim, Gyeonggi-do (KR); and Dong Won Kim, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Kolon Spaceworks Co., Ltd., Gyeongsangnam-do (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Kolon Spaceworks Co., Ltd., Gyeongsangnam-do (KR)
Filed on Nov. 17, 2021, as Appl. No. 17/455,363.
Claims priority of application No. 10-2021-0070358 (KR), filed on May 31, 2021.
Prior Publication US 2022/0379972 A1, Dec. 1, 2022
Int. Cl. B62D 25/20 (2006.01)
CPC B62D 25/20 (2013.01) 9 Claims
OG exemplary drawing
 
1. A lower cross member for a vehicle, the lower cross member, comprising:
a core member; and
a reinforcing layer formed on a surface of the core member,
wherein the core member is made of a composite material containing 70 wt. % or more of unidirectional carbon fiber, and the reinforcing layer is made of a composite material containing 60 wt. % or more of fiberglass,
wherein the reinforcing layer includes a lower layer, an upper layer, and an inner layer, the lower layer is formed on an outer-lower surface of the core member, the upper layer is formed on an outer-upper surface of the core member, and the inner layer is formed on an inner surface of the core member.