What does a car bumper mean
The car bumper is a safety device that absorbs and reduces external impact forces and protects the front and rear of the vehicle body. Many years ago, the front and rear bumpers of cars were made by stamping steel plates into channel steel, which was riveted or welded to the longitudinal beams of the frame. There was a relatively large gap between them and the car body, which looked very unattractive. With the development of the automotive industry and the extensive application of engineering plastics in it, automotive bumpers, as an important safety device, have also embarked on a path of innovation. Today's front and rear bumpers of cars, in addition to maintaining their original protective functions, also strive for harmony and unity with the vehicle body shape and pursue their own lightweight. The front and rear bumpers of a car are both made of plastic, which people call plastic bumpers. The plastic bumper of a general car is composed of three parts: the outer plate, the cushioning material and the crossbeam. Among them, the outer plate and buffer material are made of plastic, and the crossbeam is formed into a U-shaped groove by cold-rolled thin plate stamping. The outer plate and cushioning material are attached to the crossbeam.
Bumpers serve functions such as safety protection, vehicle decoration, and improvement of the vehicle's aerodynamic characteristics. From a safety perspective, when a car is involved in a low-speed collision accident, it can act as a buffer to protect the front and rear vehicle bodies. It can play a certain role in protecting pedestrians when an accident occurs with them. From the perspective of appearance, it is decorative and has become an important component for decorating the exterior of a car. At the same time, car bumpers also have a certain aerodynamic effect.
At the same time, in order to reduce the harm to passengers in the event of a side collision, car doors are usually equipped with door bumpers to enhance the anti-collision impact force of the doors. This method is practical and simple, causing little change to the vehicle body structure, and has been widely promoted and used. As early as the 1993 Shenzhen International Auto Show, the Honda Accord on display had a part of its door cut open to specifically expose the door bumper to the audience, demonstrating its excellent safety performance.
Installing door bumpers involves placing several high-strength steel beams horizontally or diagonally within each door panel, serving as the front and rear bumpers of the vehicle. This ensures that the entire car is protected by bumpers at the front, back, left and right, forming an "impregnable wall" and providing the occupants with the maximum safety zone. Of course, installing such door bumpers will undoubtedly increase some costs for car manufacturers, but for the occupants of the car, it will greatly enhance safety and a sense of security.
The core difference between a guard bar and a bumper lies in their design purpose and installation position : The bumper is a standard safety device provided by the vehicle manufacturer, mainly used to absorb collision energy and protect pedestrians; The guard bar is a protective device installed later, focusing on anti-drop and expansion functions.
Youdaoplaceholder0 Function difference
Youdaoplaceholder0 bumper .
Youdaoplaceholder0 Core function : Absorb and disperse collision energy, protect the integrity of the vehicle body structure, reduce maintenance costs during low-speed collisions, and at the same time, minimize harm to pedestrians through plastic material buffering.
Youdaoplaceholder0 Standardization requirements : It must comply with industry standards such as QC/T 905-2013, which have clear regulations on material strength and energy absorption effect.
Youdaoplaceholder0 guard bar .
The core function of is : it prevents the body parts of the vehicle from directly touching the ground when reversing, reducing the risk of personnel squeezing caused by a crash. At the same time, it can be expanded to install accessories such as spotlights and water cup brackets.
Youdaoplaceholder0 applicable scenarios : Commonly seen in motorcycles, off-road vehicles and other models that require additional protection.
Youdaoplaceholder0 design and material differences
Youdaoplaceholder0 bumper .
Materials: The outer layer is mostly made of plastic or resin composite materials (such as polypropylene), and the internal crossbeam is made of high-strength steel or aluminum alloy.
Structure: Integrated at the front/rear end of the vehicle body, it is connected to the longitudinal beams of the frame through bolts, and the appearance is designed in harmony with the body lines.
Youdaoplaceholder0 guard bar .
Materials: Mainly metals (such as steel pipes and aluminum alloys), and some high-end products use glass fiber reinforced composite materials.
Structure: External installation, fixed to the frame or engine position through a bracket, protruding from the vehicle body contour.
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