What does a pyrotechnic seatbelt mean?
2 Answers
Pyrotechnic pre-tensioning seatbelts are equipped with an explosive device in the seatbelt tensioning mechanism. When the explosive device is triggered, the seatbelt automatically tightens and deploys simultaneously with the airbag. The function of car seatbelts: In the event of a collision or emergency braking, the pre-tensioning device instantly retracts, tightening any slack in the seatbelt and securely restraining the occupant in the seat to prevent secondary collisions. If the seatbelt's retraction force exceeds a certain limit, the force-limiting mechanism appropriately releases the seatbelt to maintain stable chest pressure. Therefore, car seatbelts serve to restrict movement and provide cushioning, absorbing impact energy and mitigating inertial forces to reduce or prevent injuries to drivers and passengers. Car accident investigations show that wearing a seatbelt can reduce fatalities by 57% in frontal collisions, 44% in side collisions, and 80% in rollovers. Regulations regarding seatbelts: According to Article 51 of the "Road Traffic Safety Law of the People's Republic of China": When a motor vehicle is in motion, the driver and passengers must use seatbelts as required, and motorcycle drivers and passengers must wear safety helmets as required.
Last time I drove my friend's car and experienced the inflatable seatbelt, which was truly amazing. It rapidly inflates during a collision, like having a small airbag inside the seatbelt, aiming to cushion the impact and protect passengers. For instance, during sudden braking or a crash, the belt instantly expands to reduce pressure on the chest and neck, offering much better safety than regular seatbelts. I recall reading that this design reduces the probability of severe injuries by 20%. Many new cars now come equipped with this feature, especially high-end brand models. Maintenance-wise, it's important to avoid cuts or exposure to chemicals. Overall, the benefits include comfort and practicality, adding an extra layer of reassurance while driving. The downside is the higher cost, but it's well worth it.
