US Patent 11850977 Device for folding seat

A device for folding a seat may include: a lower arm stopper fixed to a predetermined radial position with respect to a reclining hinge shaft of a seatback as a center; a lock plate configured to rotate about a rotation shaft as a center while being hooked to the lower arm stopper in a process of reclining forward together with the seatback with respect to the reclining hinge shaft as the center; and a folding link limited to rotate by being hooked to the lock plate and configured to make folding rotation together with the seatback with respect to a folding hinge shaft, as a center, located at a part above the reclining hinge shaft, by being released from being hooked to the lock plate according to the rotation of the lock plate.