Car bumpers are safety devices installed at the front and rear ends of cars. Their main function is to absorb and mitigate external impact forces and protect the car body and occupants. The bumper consists of three parts: outer plate, buffer material and crossbeam. It is usually made of plastic, resin and other materials with high elasticity, such as ABS engineering plastics.
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Historical evolution of bumpers
Material and structure of bumpers
Early car bumpers were mainly made of metal materials, such as steel plates stamped into U-shaped channel steel, riveted or welded to the longitudinal beams of the frame, which had an unsightly appearance and a certain gap with the car body. With the development of the automobile industry and the extensive application of engineering plastics, modern car bumpers are mostly made of plastic, which not only reduces the weight of the vehicle, but also improves the aerodynamic characteristics of the vehicle, and has a more beautiful appearance.
Modern bumpers usually use plastic PP materials, such as ABS engineering plastics, which have good corrosion resistance, stress cracking resistance and high bending fatigue life. The design of the bumper not only pursues lightweight, but also pays attention to the harmonious unity with the body shape. Surface treatment includes leather grain and painting to enhance aesthetics and durability.
Safety protection: In low-speed collisions, bumpers can play a buffering role, reduce vehicle damage, and also have a certain protective effect on pedestrians.
Decorative function: As part of the car's appearance, the bumper enhances the vehicle's aesthetics.
Aerodynamic characteristics: The design of the bumper can also improve the vehicle's aerodynamic characteristics to a certain extent.
Car bumpers are not only important safety devices, but also play an important role in reducing vehicle weight, improving aerodynamic characteristics and enhancing vehicle aesthetics.
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