| 摘要 |
A tension locking mechanism of a retractor has a webbing take-up reel rotatably supported on a base, a take-up spring for biasing the take-up reel in a webbing take-up direction, a ratchet member formed integrally with the take-up reel, a latch member adapted to assume a latching position for preventing rotation of the ratchet member and a non-latching position for permitting rotation of the ratchet member, latch member control means for controlling the positions of the latch member, holding means adapted to sense a predetermined movement of a seat occupant and be electrically operated to hold the latch member in the non-latching position, and auxiliary means for imparting an auxiliary force when releasing the holding of the latch member in the non-latching position by the holding means.
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