Yesterday I had dinner with Dr. Zhang of 120, and when I was chatting, I talked about his experience of going out of the car once.
120 cars rushed to the scene of the accident, a mess, here to save some description.
It probably means:
The driver, wearing a seat belt, was injured, but was later pulled to the hospital, where he had little problem after treatment.
The co-pilot is the driver's brother-in-law, because of his fat body, he usually does not like to wear seat belts. When the car is driving, if the seat belt is not worn, the car will always call the police, so the brother-in-law will jam the seat belt from behind so that the car will not alarm. As a result, after the car accident, the brother-in-law disappeared on the spot.
Sitting in the back row were children and wives, not wearing seat belts, all seriously injured...
Statistics show that about 30,000 people lose their lives each year because they do not wear seat belts.
According to the World Health Organization, wearing seat belts can reduce the risk of death of front seat passengers by up to 50% and the risk of death of rear passengers by 75%.
Because of the popularity of cars, there are now cars in cities and rural areas, and there are more and more cars, but everyone's safety awareness has not improved. According to statistics in 2019, the use rate of seat belts for car drivers in China is only 37%, and the use rate of rear seat belts is far less than 10%.
Many people are reluctant to wear seat belts, because they think that seat belts are loose and loose, how can they play a role in protecting us?
This is because everyone does not understand the principle of seat belt protection, you can do a simple experiment, you can initially understand that seat belts are useful.
First, tighten quickly, pull out slowly
We may occasionally encounter such a phenomenon, when wearing a seat belt, the faster and harder to pull, the more can not be pulled out; on the contrary, a light pull will be very long.
What is the rationale for this?
This is the basis of the principle of seat belt protection. When a car collides, the human body will leave the seat at high speed under the action of inertia. The body will quickly pull the seat belt, which is equivalent to pulling the seat belt out quickly.
As we said earlier, the faster you drag, the more you can't pull out. When a car crash occurs, it is equivalent to pulling the seat belt quickly, and the seat belt will tighten and fix us to the seat. This reduces the greater damage caused by the body being shaken out during a car collision due to external forces.
In fact, the working principle of seat belts is not only such a principle.
Second, there is also a device on the car that can collect the collision information of the car.
As soon as the collision occurs, the car collects this information and then releases a command, which is transmitted to the airbag and detonates the gas. The gas pressure makes the ball move, the ball drives the pawl disk, and the pawl disc drives the shaft rotation - instantly realizes the tightening function of the seat belt.
From the car sensing the collision to completing the tightening of the seat belt, the process is fast, only a few thousandths of a second.
Third, then relax
When a car accident occurs, the seat belt quickly tightens, holding our human body tightly to the seat. With the opening of the airbag and the end of the collision event, the external forces are removed. Inside the shaft core to which the seat belt is connected is a steel twist rod. When the load reaches a predetermined situation, the twist rod begins to twist, which relaxes the seat belt to a certain extent and realizes the tension limit function of the seat belt. That is to say, at this time, the seat belt will be properly relaxed, so as not to cause the safety belt to cause damage to the human body by being too tight.
Of course, the purpose of talking about this topic today is not to tell you the principle of seat belts, but to tell everyone: loose and collapsed seat belts, in fact, the key time will not drop the chain, really can save lives.
Remember to wear seat belts when driving out, not only the driver should wear seat belts, but also the co-pilot and the rear seat.
Don't be like the brother-in-law, in order to prevent the seat belt from being tightened, go around the seat belt from behind, cover your ears and steal the bell, and deceive yourself. Wearing seat belts, not to avoid fines, the only purpose of wearing seat belts is to ride safely!
Anyone who has ridden a roller coaster knows what excitement is. In fact, the speed of roller coasters is generally 60 km / h, which is far lower than the speed of our cars on high speed.
If you feel that you can ride a roller coaster without wearing a seat belt and not falling off, then you can think that when you drive a car at a high speed for 100 km / h, you can control your body at a critical moment.
I want to ride the roller coaster, no one dares not wear a seat belt, but why do you dare not wear a seat belt in a car?