| 摘要 |
A seat belt position adjuster includes a guide rail attached to a vehicle body and a slider slidably provided to the guide rail. The slider swingably supports a belt anchor that guides a seat belt. The slider includes a boss portion that supports the belt anchor, and slides with respect to the guide rail to adjust the position of the seat belt. The boss portion includes an inner diameter that is kept constant between a base portion and a leading end portion of the boss portion, and an outer diameter that is continuously reduced from the base portion toward a leading end of the boss portion.
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