Importance

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Abstract

Provided is a seatbelt device capable of reliably securing and protecting a passenger. This seatbelt device has a first seatbelt tension increasing unit (9a) for increasing the tension of the seatbelt (4), and a second seatbelt tension increasing unit (9b, 20, 30) for increasing the tension of the seatbelt (4). When this seatbelt device judges that the collision of a vehicle is unavoidable, it operates the first seatbelt tension increasing unit (9a) before the collision and operates the second seatbelt tension increasing unit (9b, 20, 30) when it detects the collision of the vehicle. Thereby, the passenger is reliably secured to the seat and his/her safety is ensured.

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First Claim