Patent ID: 8807652

Claim:
A back reclining apparatus interlocking with a seat cushion for a vehicle, comprising: a back frame including a main frame provided on the seat cushion and a reclining frame that is selectively reclined around a reclining hinge on an inner surface of the main frame; a reclining locking unit connected to the main frame and the reclining frame to selectively release locking of the main frame and the reclining frame; a cushion locking unit selectively releasing locking of a cushion frame and the reclining frame; and a cushion sliding unit connected between the cushion frame and a floor panel to interlock with the reclining frame and to make the cushion frame move to slide forward when the locking of the reclining locking unit is released and the reclining frame is reclined around the reclining hinge; wherein the reclining locking unit includes: a reclining lever provided on a side of the back frame; a reclining cable lever rotatably provided on the reclining frame and connected to the reclining lever with a first reclining cable; and a locking pin connected to the reclining cable lever with a second reclining cable and inserted into a first guide bracket that is integrally formed with the main frame and a second guide bracket that is integrally formed with the reclining frame to maintain or release locking of the first guide bracket and the second guide bracket; wherein when the reclining lever is operated, the first reclining cable rotates the reclining cable lever, and the second reclining cable that is connected to the reclining cable lever pulls the lock pin, so that the locking of the first guide bracket and the second guide bracket is maintained or released.