| 摘要 |
A seat belt retractor is provided with an emergency locking mechanism which can operate securely while an end lock state where a webbing can be neither drawn out nor taken up is prevented from being caused by the maloperation of the emergency locking mechanism at the time of storage of the belt. A rotation control disk having teeth which are equal in pitch circle diameter to teeth of a driving side gear rotating together with a takeup shaft but different in number from the teeth of the driving side gear is rotatably supported on a rotary shaft of the driving side gear. The rotation control disk is rotated by an intermediate gear with a phase shift relative to the driving side gear. The movement of the lock member is limited by a limiting member in accordance with an angle of phase shift of the rotation control disk relative to the takeup shaft so that the lock member cannot move in the direction of engagement with the latch member when the webbing is taken up substantially entirely.
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