Three-point car seat belt

It is an unquestionable fact that seat belts can save lives, but it took a long time for both the official and ordinary people to understand this truth. In terms of mitigating the consequences of thousands of traffic accidents around the world, its contribution is that in a vehicle that no other single safety solution can match, the human body sitting in the vehicle moves at the same speed as the vehicle. When a sudden stop, the human body will still move at the original speed. This requires a strong, soft, and comfortable belt to firmly block the impact between 3000 and 5000 kilograms. Nowadays, this kind of seat belt has become part of the standard configuration of our cars. It is not the automobile industry but the aviation industry that first started working with the seat belt. Two former U.S. pilots Hugh De Haven and Roger W. Griswold designed a Y-shaped three-point seat belt and placed the buckle point of the diagonal harness behind the seat-almost right behind the occupants Behind. This kind of seat belt is connected to a buckle placed on the abdomen, called a combined shoulder-waist seat belt, and applied for a patent in 1951.