Patent ID: 6039400
Filing Date: 2000-03-21
Classification: B60N

Abstract:
A seat reclining device for a seat having a seat cushion and a seatback which is pivotal relative to said seat cushion, comprising:a first plate adapted to be secured to a rear part of the seat cushion, said first plate having a first circular opening formed therein;a second plate adapted to be secured to a lower end of said seatback, said second plate having a second circular opening formed therein;a drive shaft passing through said first and second circular openings of said first and second plates;a lock mechanism actuated by said drive shaft, said lock mechanism being interposed between said first and second plates to lock said second plate at a desired angular position relative to said first plate and assume a lock condition when said drive shaft is turned in a first direction and cancel the locked condition of said second plate when said drive shaft is turned in a second direction; anda coil spring disposed about said drive shaft and positioned in said first circular opening, said coil spring being incorporated with said lock mechanism in such a manner as to bias said lock mechanism to assume the locked condition of said second plate.