The function of the rear bumper bracket of a car
The rear bumper bracket of a car is an important component that connects the bumper to the vehicle body. Its main functions include:
Support and protect the bumper
The bracket provides a stable support for the bumper through high-strength materials such as high-strength steel or aluminum alloy, ensuring the stability and safety of the bumper during daily driving.
Absorb collision energy
When a collision occurs at the rear of the vehicle, the frame disperses the impact force through its own structural characteristics, reducing the damage to the key components of the vehicle body and the occupants. Its buffer device can gradually consume the collision energy and reduce the risk of vehicle body damage.
Assess the severity of the accident
The damage to the support is often used as one of the bases for determining the level of an accident. If the support is severely deformed or broken, it may affect the overall structural stability of the vehicle and is usually regarded as a major accident.
There are mainly two types of materials for the rear bumper brackets of automobiles: high-strength steel and aluminum alloy . The rear bumper frame is usually made of high-strength steel to withstand the impact force during a collision; some high-end models or those that pursue lightweighting use aluminum alloy materials. .
Material properties
Youdaoplaceholder0 high-strength steel
Youdaoplaceholder0 characteristics : High density and hardness, capable of absorbing collision energy, protecting the integrity of the vehicle body structure, and providing a larger living space for occupants.
Youdaoplaceholder0 application : Commonly seen in safety-conscious vehicle models, such as some mainstream family cars.
Youdaoplaceholder0 aluminium alloy
Youdaoplaceholder0 characteristics : low density, high strength, with the advantage of lightweight, and also corrosion-resistant.
Youdaoplaceholder0 application : It is mostly used in high-end models or vehicles that pursue handling, such as some luxury sedans and SUVs.
Structural function
The rear bumper bracket, as a connecting part between the bumper and the vehicle body, must have sufficient strength and toughness to disperse the impact force during a collision. At the same time, it further enhances safety through specific structures (such as guiding mechanisms and buffer devices).
The main symptoms of faults in the rear bumper bracket of a car are as follows:
Abnormal noise and vibration
During driving, the rear bumper may emit a continuous abnormal noise, especially on bumpy roads or when accelerating, the noise will intensify.
There may be an abnormal noise similar to rubber friction at the rear of the engine, especially when shifting gears (such as second or third gear) or accelerating.
Decreased driving stability
When a vehicle is traveling at low speed, reversing or with the air conditioner on, it may experience jolting or jolting.
When driving at high speed, the steering wheel vibrates significantly, and in severe cases, it may affect driving stability.
Connection issue
The bracket may experience abnormal vibration at the connection points due to loose screws or aging rubber pads. In severe cases, oil leakage may occur.
Some models may experience the inability of the rear bumper bracket to extend and retract normally or the failure of its rotation function.
Maintenance suggestions
Slight looseness or cracks can be repaired by tightening screws, correction or using strong glue. Severe breakage requires replacement with original or compatible parts.
It is recommended to contact a professional repair shop first for inspection to ensure that the bracket is firmly connected to the vehicle body and there are no issues such as oil leakage or abnormal noises.
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