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AssigneeAutoliv Development AB
InventorsThomas Schmidt, Klaus Butenop, Doris Kroger, Jorg Barckmann, Rene Rade
Estimating the term…
A rotary tightening device for a safety belt has a belt retractor including a housing and a belt take-up shaft rotatably supported in the housing. The belt-take-up shaft has one end of the safety belt connected thereto. Upon triggering of the rotary tightening device, the belt take-up shaft is rotated in a belt take-up direction of the safety belt. A drive wheel is connected to the shaft. The housing has a channel extending in a plane parallel to a radial plane of the drive wheel and extending at least partially about a circumference of the drive wheel. Mass bodies are positioned loosely adjacent to one another in the channel. The mass bodies, when accelerated, act on the drive wheel for driving it. The drive wheel has at the circumference a gearing in which the mass bodies are received for driving the drive wheel. A spacing of the gearing is substantially identical to a spacing between the mass bodies.
A rotary tightening device for a safety belt, said rotary tightening device comprising:
A rotary tightening device according to claimed 17, wherein said drive wheel has an inlet region for said balls and an outlet region for said balls, wherein one of said sword-shaped guides is positioned at said inlet region and another of said sword-shaped guides is positioned at said outlet region.
A rotary tightening device for a safety belt, said rotary tightening device comprising:
A rotary tightening device according to claimed 25, further comprising a cap, consisting of plastic material, connected to said housing of said belt retractor, wherein said tube is embedded in said cap.
Dependencies are inferred from the claim text.