Whenever there is a collision, we will always discuss which car is hard. There is no such thing as a serious collision. On the contrary, the car is slag. Once it hits, it becomes scrap metal. It is too unsafe.

Although we all know that any small car, if it is hit by a large truck and squeezed, is certainly more than a few weapons, a few stars in the crash results are useless. However, we can't help but ask: In the same speed situation, is the harder car safety or the softer car safety? Which vehicle can guarantee our safety in the event of an accident?

Keywords in this article

Car collision

bumper

Anti-collision beam

Body structure

First, the Japanese car can cut corners?

Japanese cars are fuel-efficient and wear-resisting. This is recognized by all. However, Japanese skins are thin, light weight, and impatience. The material used is not plastic or thin sheet metal. It feels like a paper paste. Therefore, Japanese cars have the most negative news in the collision.

(Toyota who has a rear-end bike but is disfigured)

(Japanese cars humiliated by a chicken)

Indeed, Japanese cars are the most incisive in lightening the weight of cars and absorbing energy in cars. However, lightweight is certainly not safe. Xiaobian dared not take rhythm, or rational analysis of it.

In fact, the earliest research on hard-running cars was not Japanese cars, but Mercedes-Benz.

Second, the father of passive security

In the 1930s, Mercedes-Benz found in its experience in building a car that although it was hard enough to build a car and that all parts were hard enough, not only were the vehicles seriously damaged in the accident, but the protection of pedestrians was not enough, making them feel Very distressed. What kind of car is a safe car? So Mercedes-Benz began to study passive security.

In 1939, Mercedes Benz found a talented talent - Billa Bainyi. He was the first person to propose colliding collapsing and absorbing energy and was therefore called the father of passive safety.

After Billa Bainyi's study, the safest vehicle that feels safest should be composed of three parts, namely the high crash-conserving front, rear, and high-strength crew compartment. The front and rear ends collide and absorb energy in the event of a collision to ensure that the main components are not harmed; the high-strength crew compartment ensures that the on-board personnel are not squeezed when there is a fierce collision, leaving enough room for survival.

In 1959, Mercedes-Benz applied such a design to the third-generation Mercedes-Benz S-Class (W111), making it the first model in history to have a crash-absorbing design.

How can the three-part safety structure mentioned above ensure the safety of cars, occupants and even pedestrians? The following analysis one by one.

Third, the body collision safety design

bumper

If there is a collision, the first to be tested is our front and rear bumpers. Since the bumper is so important, why not make the bumper harder? Instead, the current bumpers are all made of plastic. Isn't this the opposite of safety? In fact, the plastic bumper has many advantages.

1. There is no corrosion problem with plastic materials. In the case of rubbing, even if the paint is broken, there is no need to worry about rust. Like this, even if I don't keep repairing, it won't corrode. At most it's ugly.

Also, plastic bumpers, if only bumped and recessed, are relatively simple to repair, if they are metal, can only do sheet metal.

(plastic bumper repair is also relatively simple)

Chen Tian in Guangzhou, you can even spend a small amount of money to scouring a full bumper and go back to paint again.

2. Lightweight requirements, the heavier the car, the higher the fuel consumption.

3. Pedestrian protection. If the bumper is made of a hard metal metal crash bracket, in case of a collision with a pedestrian, the pedestrian will die. If it is a plastic material, at least this soft material can provide a good buffer to reduce casualties.

In general, the bumper will not play a great anti-collision effect on the car itself in a car crash. More often than not, it will only make the car more integrated and look better. It will also prevent some minor flaws. The most important thing is that It is pedestrian protection during collision.

Anti-collision beam

When it comes to the real anti-collision effect, it is a very important part behind the bumper. It is the anti-collision beam.

All the important components in the cabin are hidden behind the collision beam. If an accident has damaged the anti-collision beam, the accident is not too small.

In this case, is it better to make the anti-collision beam harder? In fact, it is not. Both ends of the anti-collision beam are connected to the longitudinal beams of the body. If the anti-collision beam is made very hard, when the impact occurs, all the forces will be transmitted to the cockpit, which will not protect the people in the vehicle.

In order to solve this problem, the general anti-collision beam will be made into a hollow “Japanese” structure with two energy absorber boxes at both ends. When the impact force is too great, the energy absorber box will collapse backwards, absorbing the impact energy and protecting the vehicle.

Although the impact beam generally can only handle impact strength below 40km/h, but Coolco has disassembled many car crash beams and found that the anti-collision beam of the luxury car will be more elaborate no matter the material, thickness or design.

In addition, many cars will also have a layer of foam wrapped in anti-collision beams, the purpose is to buffer, but many people who do not understand may think that this is the manufacturers cut corners, and then cause great misunderstanding.

In the video, the old man had a car accident and inadvertently discovered that there were bubbles in the bumper. He thought it was the manufacturers who cut corners and cut materials. Therefore, he took a slap on the video and “watched” the world and complained of “unscrupulous” manufacturers. In fact, most domestic car bumpers will have a bubble buffer inside, not just Japanese cars.

Body structure

As mentioned before, whether the bumper or the anti-collision beam is to better absorb energy and achieve the purpose of protecting people and cars, isn't there a place where the whole car is hard? Have! That is the body!

Other places can be soft, but the body must be hard! Only hard enough to ensure the car maintains a good shape when it hits or rolls. It is necessary to reduce the weight of the car body and increase the rigidity of the car body, so the design is still very difficult.

When the front of the vehicle is impacted, the force is first absorbed by the anti-collision steel beam and the front longitudinal beam, and finally transmitted to the cockpit through the high-strength structure such as the central channel of the chassis, the A-pillar, and the door beam, which is the same reason in the rear-end collision. .

Excellent body structure, in the event of a collision, should ensure that the A pillar will not be deformed in the future, to ensure that all doors can be opened, the cockpit personnel will not be squeezed.

Therefore, the car's crash performance still has great reference significance. Those who broke the A-pillars were cut off, suggesting that everyone should think carefully.

This article is not intended to whitewash any faction's car, nor is it to discredit any country's cars. Any car system is safe and unsafe. Everyone must do their homework when they buy a car. This car's safety test serves as an important purchase reference.

Attachment: The most insecure car ranking of foreign media statistics

Fourth, summary

First, the vehicle body material is not as hard as possible. At the places where the front and rear of the vehicle are first contacted and impacted, materials with stronger energy absorption can be used to provide better cushioning for the vehicle. There is no doubt that the protection of the people on the vehicle is better one.

Second, the material of the cockpit is still dominated by ultra-high strength. This part is harder the better. Because the cockpit is the real living space for people, if the impact is squeezed, it will threaten the safety of life. If there are sales hammers and anti-collision beams showing his car's crashworthiness, you can tell him that he has a kind of A-pillar.

Third, no matter how good your car's safety performance is, don't overspeed, and fast tanks are useless. Also, in the face of large trucks, most of the body's safety structure has been greatly reduced, so try to avoid too close to the big trucks.