Patent ID: 6447012
Filing Date: 2002-09-10
Classification: B60R,B65G

Abstract:
A belt retractor for an occupant restraint system, comprising:a frame, a belt reel rotatably mounted in said frame, a locking mechanism for selectively blocking said belt reel, a vehicle-sensitive sensor, an actuator for actuating said locking mechanism, an electric motor by which said belt reel is drivable, an electronic control unit including an input interface and an output interface, said vehicle-sensitive sensor being connected to said input interface, and said actuator and said electric motor being connected to said output interface. said control unit signaling said electric motor to provide a belt tensioning when the signal constellation of a plurality of sensors connected to said input interface indicates an imminent vehicle collision, said electric motor comprising a 14-pole outside rotor, said electric motor being coupled by a toothed belt to said belt reel, said toother belt coupling a drive pinion of said electric motor to a gearwheel side-mounted on said belt reel, said gearwheel having a diameter larger than that of said drive pinion, said electric motor being supported on a support plate side-mounted to a leg of said frame so as to be capable of pivoting to a limited extent and, by pivoting of said support plate, said toothed belt being pressed in a section between said gearwheel and said drive pinion against a tensioning pulley mounted on said leg of said frame.