Patent ID: 7134703

Claim:
A double-folding seat, comprising: a seat cushion; a seat back that is rotatably connected to the seat cushion; a recliner portion configured to selectively fold the seat back toward the seat cushion and rotate with the seat back; a cam fixedly connected to the recliner portion to rotate therewith; a cable link portion rotatably connected to the seat cushion, the cable link portion rotating in response to a rotation of the cam; a rear locking portion selectively locking a rear portion of the seat cushion to a vehicle body; a cable connecting the cable link portion and the rear locking portion to transmit a force generated by a rotation of the cable link portion to the rear locking portion; and a front locking portion to which the seat cushion is rotatably connected and connecting a front portion of the seat cushion to the vehicle body, wherein when the seat back is folded by an operation of the recliner portion, a force generated by a rotation of the seat back is transmitted to the rear locking portion via the recliner portion, the cam, the cable link portion, and the cable, so that the rear locking portion is automatically released from the vehicle body by a force transmitted through the cable; wherein the rear locking portion comprises: a mounting plate that is connected to the seat cushion; a rear locking releasing lever one end of which is connected to the cable and the other end of which is fixedly connected to a lever rotating shaft that is rotatably connected to the mounting plate; a rear locking plate rotatably connected to the mounting plate and configured to be selectively locked to the vehicle body in response to a rotation thereof; a locking cam fixedly connected to the lever rotating shaft to rotate with the rear locking releasing lever, the locking cam selectively blocking a rotation of the rear locking plate depending on a rotation thereof, wherein a blocking of a rotation of the rear locking plate is released when the locking cam rotates by the force transmitted through the cable; and a first elastic member elastically connecting the locking cam and the rear locking plate such that a rotation of the locking cam causes a rotation of the rear locking plate.