How Does a Seat Belt Work?
1 Answers
Seat belt working principle is: Under normal circumstances, passengers can freely and evenly pull the webbing on the seat, but when the webbing is continuously pulled out from the retractor and suddenly stops or when the vehicle encounters an emergency, the ratchet mechanism will engage and automatically lock the webbing, preventing it from being pulled out further. The car seat belt is a device used in vehicles to reduce passenger injuries when the car body is subjected to a violent impact. The ideal functioning process of a seat belt is: first, it tightens promptly, firmly holding the person in the seat without hesitation at the first moment of an accident; then, it moderately loosens, appropriately relaxing the seat belt after the peak impact force has passed or when the person can be protected by the airbag, to avoid rib injuries caused by excessive tension.