Belt retractor for safety belt, has belt spindle for winding and unwinding safety belt and tightening drive, where tightening drive has gas generator, drive wheel and feed pipe, which connects gas generator and drive wheel

摘要

The belt retractor (10) has a belt spindle (20) for winding and unwinding the safety belt and a tightening drive (30). The tightening drive has a gas generator (40), a drive wheel (50) and a feed pipe (60), which connects the gas generator and the drive wheel. Multiple thrust bodies (70) are provided in the feed pipe, where one of the thrust body is made of fiber reinforced plastic. The fiber reinforced plastic contains polyamide, heat stabilized, semi-crystalline polyamide or polyphthalamide. The fiber-reinforced plastic is reinforced with long fibers, particularly long glass fibers.