Abstract: A vehicle seat of a hinged type wherein a seat cushion is rotatable about its forward pivot point to an upright position and a seat back is rotatable about its rearward pivot point to a horizontally laying position, the locking arrangement thereof being such that a lock member having a latch hole is provided at the rearward end of the seat cushion, whereas a stopper is defined at the lower end of the seat back, so that, when the seat cushion tends to rotate upwardly with a great force, the stopper at the seat back is to be engaged into the latch hole of the seat cushion.