公开(公告)号：US20230115012A1

公开(公告)日：2023-04-13

申请号：US17877868

申请日：2022-07-29

申请人： TACHI-S CO., LTD. ,  Mie University

发明人： Masami YOSHIDA ,  Takumi YAMAKAWA ,  Soichiro HAYAKAWA ,  Ryojun IKEURA

IPC分类号： B60N2/90 ,  A61H23/02

摘要： There is provided a technique by which posture changing can be given to an occupant while the forward shift of his/her hip portion is prevented. A seat for vehicle includes a seat cushion, and a seat back coupled to the seat cushion, and the seat back includes a posture changing mechanism having a back face supporting mechanism. There is provided a technique by which a fatigue reduction operation using the posture changing mechanism includes a) moving the back face supporting mechanism set to a position of a lumbar spine portion of an occupant from a first position state to a rear direction side and setting the back face supporting mechanism to a second position state, and b) thereafter, moving the back face supporting mechanism stepwise to a front direction side from the second position state to the first position state.