WEBBING RETRACTOR

摘要

A webbing retractor has a lock mechanism which includes a lock gear with ratchet teeth formed at an outer peripheral face of the lock gear and a lock plate dispose d to be able to engage with the ratchet teeth of the lock gear. The lock mechanism is structured to prevent rotation of the retracting shaft in a webbing pulling-out direction by the lock plate being engaged with the lock gear. The webbing retractor also has a pretensioner mechanism which includes a sleeve coupled to the other end portion of the torsion bar, and which is capable of forcibly rotating the retracting shaft in a webbing retracting direction via the sleeve under predetermined conditions. The sleeve of the pretensioner mechanism is provid ed integrally at an axial center portion of the lock gear of the lock mechanism.