| 摘要 |
As an occupant releases the latching between a buckle and a tongue, a seat belt retractor winds up the seat belt at a winding-up speed S 1 as a first high speed. Accordingly, the seat belt moves away from the occupant immediately. As a time period (T 1 -T 0 ) elapses from the buckle release, the seat belt retractor winds up the seat belt at a winding-up speed S 2 as a low speed. Accordingly, the seat belt is slowly wound up so that the tongue is less likely to strike and thus scratch an interior panel. As a time period (T 2 -T 1 ) further elapses, the seat belt retractor winds up the seat belt at a winding-up speed S 3 as a second high speed. Accordingly, the winding of the seat belt is promptly completed so that the seat belt is less likely to be caught by a door when the occupant gets out of the vehicle.
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