| 摘要 |
<p>A vehicle seat belt apparatus (1) includes a belt reel (14), a position detection section (24, 51), a motor (10), a clutch mechanism and a control section (56). The control section (56) includes a return-amount-measurement section (52). The control section (56) decouples the driving force by the clutch mechanism after the motor (10) is driven with a predetermined amount of electricity. The return-amount-measurement section (52) measures a return amount in a withdrawal direction of the belt reel (14) based on a rotational position of the belt reel (14) detected by the position detection section (24, 51) after decoupling by the clutch mechanism.</p> |
