| 摘要 |
In a webbing retractor, when a pawl engages with an internal tooth, a lock plate is guided, via a V gear, to a position at which engagement with a ratchet tooth is possible, and thereafter, the lock plate self-locks. When the V gear reversely rotates by a predetermined amount in accordance with this self-locking, engagement of the pawl and the internal tooth is cancelled. An engagement surface of the internal tooth corresponds to a locus of swinging of the pawl. Engagement with the pawl is cancelled at a smallest V gear reverse rotation angle.
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