This is because in our impression, the previous trucks, such as Jiefang truck or Dongfeng truck, their front bumper used to be made of steel stamping parts, with anti-collision function.

Later, on the car, the bumper gradually evolved into a plastic structure, but his steel anti-collision beam was hidden inside the car, and it was not easy for ordinary consumers to observe, so it was easy to confuse the two parts.

At present, bumpers and anti-collision beams are not the same thing at all. The bumper is a safety device that absorbs and slows down external impact and protects the front and rear of the body, while the anti-collision beam is a safety device used to reduce the absorption of collision energy when the vehicle is in a collision, so the two play completely different roles. Furthermore, if the bumper is made of plastic, the safety performance is completely sufficient. Because plastic has better elasticity and energy absorption capacity than metal, and the plastic bumper can also play a buffering role at the moment of collision, which can better protect other vehicles or pedestrians.

The bumper is not a bumper in the real sense. At best, it can only be regarded as a front enclosure and a rear enclosure. The real bumper is composed of a plastic insurance shell (that is, what we call front and rear bumpers), front and rear anti-collision Bars, energy-absorbing boxes and other installation and application components, this whole is the bumper. The front and rear enclosure is only one of the components, and it is the part that surrounds the inside that really plays a decisive role in the collision. Below is the front bumper of the Peugeot 408.

The advantages of plastic bumpers (surrounded) are obvious, for example, lower cost, and easy design and production; for example, better suction performance, which can protect pedestrians and non-motor vehicles; for example, good elasticity, slight collisions or Scratching, lower maintenance costs; for example, better anti-corrosion effect, not easy to rust, etc.

The front and rear bumpers of the car may be scratched or fall off when the car is slightly scratched or collided at a lower speed. At this time, the front bumper can be replaced. For minor traffic accidents that occur during our daily use, it is generally necessary to replace the front and rear bumpers. The picture below shows the installation part of the Peugeot 408 anti-collision beam (the front bumper has been removed).

The anti-collision beam of the car is hidden behind the bumper of the car, when the collision speed is high. First of all, the front and rear bumpers of the car will be destroyed. Then, the collision energy will cause damage to the anti-collision beam. The anti-collision beam is made of steel structure or aluminum alloy structure. The anti-collision beam is installed on the front and rear weight of the car by bolts. It is also a part of the car body.