Locking device for walk-in seat of vehicle

A locking device for a walk-in seat of a vehicle, the locking device comprising:

• a drive plate coupled to a connection frame interconnecting a side frame, configured to support a seat cushion frame, with a seatback frame and configured to move the connection frame to a walk-in position when performing a walk-in operation of the seat;
• a pawl mounted on the connection frame and configured to lock the drive plate at a position prior to the walk-in operation of the seat or to unlock the drive plate when the walk-in operation is performed;
• a locking lever mounted on the connection frame and configured to rotate the pawl in a direction of locking or unlocking the drive plate;
• and
• a pressing shaft, fixed to a lower end of a seat belt buckle and coupled to the connection frame while laterally protruding therefrom, and configured to apply a load to the pawl in a direction of locking the pawl to the drive plate by the load applied to the seat belt buckle.