Patent ID: 6092874
Filing Date: 2000-07-25
Classification: B60N

Abstract:
A seat reclining apparatus for vehicles comprising:a lower arm adapted to be held to a seat cushion frame;an upper arm rotatably supported to said lower arm and held to a seat back frame; anda lock mechanism comprising a ratchet and pawls which are arranged between said lower arm and said upper arm, said ratchet and said pawls being adapted to engage each other to restrict rotation of said upper arm with respect to said lower arm,one of said lower arm and said upper arm being provided with a recess portion formed in a partial pressing manner, said recess portion having an inner peripheral surface provided with bearing portions and tooth portions which form said ratchet, and raised portions formed in the other of said lower arm and said upper arm in a partial pressing manner and arranged within said recess portion so that outer peripheral surfaces of said raised portions are slidably brought into contact with said bearing portions, and including guide grooves defined between adjacent raised portions and slidably supporting the pawls.