Patent ID: 7404605

Claim:
A vehicle seat lock of a seat in a vehicle body, the seat comprising a seat back and a seat cushion, the seat back being attached to the seat cushion, the seat back being adapted to assume a first standing position in which the seat back stands and a second standing position in which the seat back is tilted backward from the first standing position, the seat cushion being mounted on a floor of the vehicle body, the vehicle seat lock comprising: a striker fixed to the vehicle body and comprising a first engagement portion and a second engagement portion: a first base member fixed in the seat back; a second base member connected to the first base member and fixed in the seat back; a first pivot shaft fixed to the first and second base members between the first and second base members; a first spring wound on the first pivot shaft; and a hook member pivotally secured on the first pivot shaft against force of the first spring wound around the first pivot shaft and comprising a first arm, a second arm and a pivot portion, a first engagement groove being formed between the first arm and the second arm, a second engagement groove being formed between the second arm and the pivot portion, a buffer portion being formed on a rear edge of the pivot portion facing the second engagement groove and molded from synthetic resin, the first engagement portion of the striker engaging in the first engagement groove of the hook member in the first standing position of the seat back, the first engagement portion of the striker engaging in the second engagement groove of the hook member with play and the second engagement portion of the striker engaging in the first engagement groove of the hook member in the second standing position of the seat back, sound being reduced by the synthetic resin buffer portion if the first engagement portion contacts the buffer portion when the first engagement portion of the striker enters the second engagement groove of the hook member.