| 摘要 |
A seat belt retractor including a tension reducer which is compact in the axial and radial directions. The retractor includes a reducer spring that always biases a bush shaft, which rotates together with a spool, to rotate in the belt winding direction, and a main spring can selectively bias the spool in the belt winding direction. A lever of the bush shaft and a Geneva wheel form an assembly for memorizing the rotational amount of the spool in the belt winding direction relative to the ratchet gear when the main spring does not bias the spool in the belt winding direction. The assembly is arranged in the ratchet gear so that the retractor with the tension reducer is formed to be compact in the axial direction and the radial direction.
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