Patent ID: 6202952
Filing Date: 2001-03-20
Classification: B60R

Abstract:
A safety belt apparatus comprising:a belt roller carrying a safety belt, the roller being biased in a belt wind-up direction and capable of being blocked by a tooth blocking mechanism to prevent the belt from extending away from the roller;an acceleration sensor, having a movable mass, for triggering the tooth blocking mechanism;the tooth blocking mechanism comprising:a position control gear engaged with a secondary gear;wherein the position control gear is positioned co-axially with the belt roller and includes a main blocking tooth crown;wherein an inner side of the secondary gear includes an auxiliary blocking tooth crown;an auxiliary pawl operatively connected to the acceleration sensor so that when a condition requiring locking of the belt is detected by the acceleration sensor the auxiliary pawl moves to enter into a blocking arrangement with the auxiliary blocking tooth crown to thereby prevent the rotation of the secondary gear and the position control gear;a main pawl connected to the belt roller and configured to engage the main blocking tooth crown so that further rotation of the roller is stopped and further extension of the belt away from the roller is stopped when rotation of the position control gear stops.