Every car has a seat belt, but do everyone know its principle? In fact, for seat belts that can be stretched and retracted, when the seat belt is not tightened, the body can easily move forward. However, when a vehicle collides and the human body moves forward rapidly, the seat belt will suddenly tighten and firmly fix the human body, which plays its role. For traditional seat belt devices, there is usually a jam inside. If the seat belt is quickly pulled, For example, in the event of a car accident, the clip inside the seat belt will be pulled out by centrifugal force due to the rapid rotation of the seat belt roller, quickly locking the seat belt and firmly securing the person to the seat. After the peak impact has passed or when the person has felt the protection of the airbag, the seat belt will be relaxed to avoid crushing the person's ribs. This series of actions can ensure the safe driving of the driver and passenger. What is the principle of car seat belts? Today, I will unveil the mystery for you. A small device has a great effect.
The internal structure of the seat belt device actually varies with the grade of the vehicle model, and the complexity will naturally vary. If it is a more advanced seat belt, there will also be pre tightening devices and tension limiters, etc. Therefore, you can pull the car seat belt faster because there is an inertia block inside the seat belt. When the speed reaches a certain acceleration greater than or equal to 2.0g, a yellow plate inside the inertia block moves downward with convention, causing the internal gear of the internal spine to lock. This kind of thing we call driving sensitivity or can be said to be a lane sensitive locking method, which only plays a certain role when a car goes up, down, or overturns.
I believe everyone has this question. Why can you say something when pulling quickly and taking slowly? This is mainly because of the structure of the seatbelt retractor. In addition, some people are concerned about the principle of inserting the seatbelt buckle, locking it, and pressing it to release it. Therefore, the following section mainly focuses on the buckle structure of the seatbelt. Let's understand the composition structure of the seatbelt together, Actually, it consists of a seatbelt webbing retractor, a buckle guide, a height adjustment mechanism warning device, and a locking device.
In the safety belt system, the safety belt is connected to a retractor, and the core component of the retractor is actually a reel. It is connected to one end of the safety belt, and a spring inside the retractor provides rotational force for the reel to rotate and roll up the loose safety belt. When the safety belt is pulled out, there will be a reverse attack transmission and cause adjacent springs to rotate in the same direction. In this case, the rotating reel will reverse twist the spring, If the seat belt is released, the spring will roll up the reel type seat belt clockwise to tighten.
In addition, the complexity of the internal structure of the seat belt device may vary depending on the grade. Advanced seat belts also come with pre tightening devices and tension line intelligence devices. The warning device is equipped with a rack type cable type and a steel ball type, which are both electrically tightened by electric motors. Therefore, for seemingly simple seat belts, there is such a close organization that everyone can understand. Therefore, when driving, everyone must pay attention to it, as it can best protect our safety at any time.