Automobile safety is divided into active safety and passive safety for vehicles. So how much do you know about car safety? The following is the knowledge about automobile safety compiled by Bian Xiao for your reference and understanding. I hope you like it!
Automobile safety knowledge
First of all, the body
How did it come from? 1939, Barney set off a revolution in the field of automobile technology. For the first time, he designed an unusually strong passenger compartment in the middle of the car body, and the front and rear parts were elastically connected with the plastic deformation collision buffer zone, which could absorb the dynamic energy generated by the collision when the accident occurred. This has become the universal design of modern cars.
How to work? After a collision, the safety car body itself can absorb energy through collapse deformation and reduce the impact on the occupants in the car.
What's the use? The difference between modern cars is that with the development of material technology, the strength of body parts is getting higher and higher, and the design of buffer zone is becoming more and more perfect. It has a fundamental protective effect on protecting the occupants in the car. A security concept has benefited for a hundred years, which is Barney's contribution.
Second, seat belts.
How did it come from? A Swede named Niels invented the three-point seat belt that is still in use today. In the 1940s, General Motors took the lead in using seat belts as standard equipment on Buick cars.
How to work? The principle is simple. By fixing the passenger on the car seat, the collision injury can be reduced.
What's the use? The report of 28,000 accidents published by Brian shows that 3-point seat belts can not only save lives, but also reduce or even avoid the chances of passengers being injured.
Third, airbags.
The advent of seat belts has saved countless lives, but cars with seat belts alone have brought another problem. Because of the restraint of the seat belt, the body is rigidly fixed on the seat, and the head can only move according to inertia after the collision, so the death rate is reduced and the spinal injury is increased as a result of the accident. At this time, airbags came into being.
How did it come from? 1in August, 953, American John Hutterit first proposed the "airbag protection device for automobiles" and obtained the patent of "automobile cushioning safety device" in the United States. The real commercialization of airbags was Daimler Benz, the originator of automobile safety, in the early 1980s.
How to work? Airbags belong to the equipment with seat belts, and only by fastening the seat belts can they play their greatest role. In the case of a serious collision, the airbag will pop up to protect the passengers. (At present, there is no standard for when to pop up)
What's the use? Airbags can effectively protect the head movement caused by violent collision, thus protecting the spine from injury.
Fourth, the safety headrest
The airbag solves the problem that the spine moves forward when the car collides head-on, but what if it is pulled back by the seat belt after moving forward? What if the car is rear-ended? How to protect the spine? So the safety headrest came into being quietly.
In the event of a rear-end collision, the most vulnerable parts for passengers in front of the vehicle are the neck and head. The safety headrest is a linkage mechanism that the passenger's body squeezes the seat when the vehicle is impacted from the rear. Under the action of the linkage mechanism, the headrest moves up and forward quickly at the same time, so as to prevent the head from leaning back sharply to the maximum extent, thus protecting the head and neck of passengers.