Provided are a pretensioner, a retractor, and a seat belt device in which strength and slidability of a rod-shaped power transmission member may both be achieved. A pretensioner 3 includes a ring gear 31 on which the spool 2 is rotatably disposed, and power transmission units 32 for transmitting power to the ring gear 31 in an emergency. The power transmission units 32 includes a rod-shaped power transmission member 32a for transmitting power to the ring gear 31 while being plastically deformed, a tip reinforcing member 32b disposed on a tip side of the power transmission member 32a, a pipe 32c for containing the power transmission member 32a, and a gas generator 32d disposed at an end of the pipe 32c. The tip reinforcing member 32b has higher strength than the power transmission member 32a.
PRETENSIONER, RETRACTOR, AND SEAT BELT DEVICE
VORSPANNVORRICHTUNG, AUFROLLER UND SITZGURTVORRICHTUNG
PRÉTENDEUR, ENROULEUR AUTOMATIQUE, ET DISPOSITIF DE CEINTURE DE SÉCURITÉ
2019-06-26
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |