BigPatents India

Disclosed is a self-locking belt retractor comprising a vehicle-sensitive sensor which is provided with a sensor mass that is disposed in a vertical position on a bottom contact surface of a support part. Said sensor mass (10) is characterized by the fact that the contact surface (11) thereof is embodied in a staggered manner so as to form at least two tilting edges (16). Each step surface (15) extending between the tilting edges (16), starting from the inner central actuator extension (12) towards the outside, is located at a greater distance from the bottom surface (14) of the support part (13)