Belt tension drive for a motor vehicle safety belt has accelerated masses drive to release a coupling and turn a cog

摘要

A belt tension drive for a motor vehicle safety belt comprises a drive means comprising mass bodies (22) which can be accelerated by a drive, a drive shaft (16) and a cog wheel (14) which can be turned by the masses to drive the shaft. A coupling (30) is released by the masses and the cog couples a tensioning with the drive shaft.