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What is the seat belt pre-tensioning function?

1 Answers

DeAdaline

07/30/25 6:21am

Seat belt pre-tensioning function refers to when there is a drastic change in vehicle speed, the retractor equipped with control and pre-tensioning devices can tighten the webbing in about 0.1 seconds, enhancing the restraint on occupants and locking the webbing to prevent the occupant's body from leaning forward, effectively protecting the safety of occupants. The following are specific details about seat belts: 1. Precautions: Do not drive or ride in a car with damaged seat belts, as they cannot provide adequate protection in a collision. When fastening or unfastening the seat belt, ensure that the belt is not twisted, otherwise, the twisted seat belt cannot absorb the impact force through its width during a collision. 2. Function: The car seat belt serves to restrain displacement and provide cushioning, absorbing impact energy, dissipating inertial forces, and preventing or reducing the extent of injuries to drivers and passengers.

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