A belt retractor (10) for a vehicle safety belt system comprises a belt tensioner for tensioning a safety belt during a tensioning phase, and a load limiter for limiting the load applied by the safety belt on a vehicle occupant during a load limiting phase after the tensioning phase. The belt tensioner includes a belt reel (14), a toothed pinion (22), a drive unit (16) and an elongated load transmission element (20). The pinion (22) is coupled to the belt reel (14). The load transmission element (22) has a first portion (28) exposing a plastically deformable material and a second portion (30) exposing an elastically deformable material. According to a method of using such a belt retractor (10), during the belt tensioning phase the drive unit (16) moves the load transmission element (20) in a tensioning direction (A) so that the first portion (28) of the load transmission element (20) engages the teeth of the pinion (22) so as to rotate the pinion (22) and the belt reel (14) in a winding direction (B) before the second portion (30) of the load transmission element (20) comes into contact with the teeth of the pinion (22). During the load limiting phase the belt reel (14) rotates the pinion (22) in an unwinding direction opposite to the winding direction (B) while the second portion (30) of the load transmission element (20) is in contact with the teeth of the pinion (22).
A BELT RETRACTOR FOR A VEHICLE SAFETY BELT SYSTEM AND METHOD OF USING SUCH BELT RETRACTOR
GURTAUFROLLER FÜR EIN FAHRZEUGSICHERHEITSGURTSYSTEM UND VERFAHREN ZUR VERWENDUNG SOLCH EINES GURTAUFROLLERS
ENROULEUR DE CEINTURE POUR UN SYSTÈME DE CEINTURE DE SÉCURITÉ DE VÉHICULE ET PROCÉDÉ D'UTILISATION D'UN TEL ENROULEUR DE CEINTURE DE SÉCURITÉ
2017-12-13
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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