US Patent 10518663 Vehicle seat

A vehicle seat includes: (a) a seat structure having a seat cushion frame including a first seat side member and a second seat side member, and a seat back frame; (b) a seat slide mechanism that is capable of moving the seat structure; (c) a first upper riser that is fixed to the seat slide mechanism and supports the first seat side member; (d) a second upper riser that is fixed to the seat slide mechanism and supports the second seat side member; (e) a first locking mechanism that locks and unlocks the first seat side member to and from the seat slide mechanism; and (f) a second locking mechanism that locks the second seat side member to the seat slide mechanism when an excessive load is input.