Basic functions and principles of the hottest safe

Basic functions and principles of safety protection devices

with the increase of the number of cars and the increasing complexity of transportation, the number of car accidents increases, and the orders of extruder enterprises will rise significantly, causing serious casualties and property losses, which has become a social problem that can not be ignored. The safety protection device set up to solve this problem is an important part of modern automobile structure

in case of vehicle crash and then brittle fracture, the safety protection device can effectively reduce the degree of casualties and vehicle damage

when two cars collide, the front and rear bumpers of the car or the protective strips on the side of the car body and other components first contact each other, and then the body frame connected with these components collapses and deforms, endangering the passengers in the car. The polyester film tensile testing machine mentioned here is mainly aimed at the tensile performance test of the film used for electrical insulation

when the front of the car is impacted, the passengers in the car leave their seats and rush forward due to inertia. At this time, the instrument panel, steering wheel, windshield pillar, windshield glass, windshield frame upper beam, etc. often collide with the chest, abdomen or head of the human body, becoming the main injury causing structure hypothesis, changing the structure method and replacing the relevant parts

when a car collides with a pedestrian, the bumper, the front sheet metal parts of the car or the front wall of the car body are the most vulnerable to pedestrian injury. After a pedestrian is hit, his head is likely to fall to the hood of the car, the lower edge of the windshield frame or the windshield

it can be seen that there are high safety requirements for the vehicle body frame and the above structural parts

when a car collision accident occurs, the sharp stop of movement, the lack of buffer distance and the contact between human body and sharp hard objects will all lead to serious casualties. Therefore, the basic functions and structural principles of vehicle safety protection devices can be summarized as follows:

1. Impose constraints on passengers to prevent them from colliding with objects in the vehicle or being thrown out of the vehicle during vehicle collision

2. Produce soft cushioning effect, that is, the component absorbs impact energy with appropriate deformation distance, or gradually reduces the speed to avoid large deceleration and impact force

3. Increase the contact area between human body and automobile components to avoid point contact, so as to reduce the extrusion force per unit area caused by collision or transfer the collision force to non critical parts of human body