| 摘要 |
In a webbing retractor, a wire is inserted through a through-hole of a spool on which a webbing is taken-up and from which the webbing is pulled-out. At an initial stage of a process of absorbing inertial energy of a vehicle occupant, a large force limiter load is generated by adding a rubbing force of the wire at a peripheral portion of the through-hole, to a twisting load of a torsion bar. An energy absorption amount is made large, and an amount of pulling-out of the webbing is kept low. After a predetermined amount of energy has been absorbed, when the wire is completely pulled-out from the through-hole, the rubbing force of the wire is cancelled, the force limiter load is reduced, and force applied to the vehicle occupant via the webbing is reduced.
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