公开(公告)号：US20230202359A1

公开(公告)日：2023-06-29

申请号：US18145281

申请日：2022-12-22

申请人： NHK SPRING CO., LTD. ,  SUBARU CORPORATION

发明人： Daisuke KOBAYASHI ,  Kensuke YOSHIGA ,  Akihiko MIZUNO ,  Fumito KITANAKA ,  Kenji NAGUMO

IPC分类号： B60N2/42 ,  B60N2/427

CPC分类号： B60N2/4228 ,  B60N2/42709 ,  B60N2/22

摘要： A seatback frame including left and right side frames, a lower frame, and a sacrum support section. The left and right side frames extend in a seat up-down direction inside left and right side portions of a seatback of a vehicle seat. The lower frame spans between lower end portions of the left and right side frames. The sacrum support section extends from a lower end portion of the lower frame toward a seat front side and supports a sacral region of a seated occupant from a seat rear side. A weakened portion that is weakened by a load from the seat front side is provided to the sacrum support section.