Abstract: A four-point seat belt device includes right and left lap belts to press the hipbone of a passenger sitting in a seat, two shoulder belts to press both shoulders of the passenger, a driving unit to perform winding of the lap belts and the shoulder belts, and a latching detecting unit to detect a state in which the lap belts and the shoulder belts are latched via a buckle. The driving unit controls the lap belts in the case that the latching detecting unit has detected latching.

Abstract: A four-point seat belt device includes: a right hip belt and left hip belt to press against the hip bone of a passenger: a right shoulder belt and a left shoulder belt to press against both shoulders: a drive unit to retract the right and left hip belts, and the right and left shoulder belts: an engagement detection unit to detect that the right and left hip belts and the right and left shoulder belts are engaged via a buckle: and a detection unit to detect that the right hip belt and the left hip belt are not making contact with the passenger. The drive unit retracts the right and left hip belts after the engagement detection unit detects an engagement and the detection unit detects that the right hip belt and left hip belt are not making contact with the passenger.

Abstract: A four-point seat belt device includes right and left lap belts to press the hipbone of a passenger sitting in a seat, two shoulder belts to press both shoulders of the passenger, a driving unit to perform winding of the lap belts and the shoulder belts, and a latching detecting unit to detect a state in which the lap belts and the shoulder belts are latched via a buckle. The driving unit controls the lap belts in the case that the latching detecting unit has detected latching.