What's on the front bumper of a car
The upper body of the front bumper of an automobile is commonly referred to as the "front bumper upper trim panel" or "front bumper upper trim strip" . Its main role is to decorate and protect the front of the vehicle, but also has a certain aerodynamic function .
In addition, the front bumper upper body also includes other parts, such as:
bumper tow hook cover : this is the upper part of the bumper, open to find the vehicle tow hook installation position .
anti-collision beam : this is an important part of the bumper, which can soften the impact and protect pedestrians .
fender : this is the upper part of the front bumper, usually made of plastic or rubber, to prevent debris from splashing onto the body and to protect it from debris .
Together, these components not only enhance the beauty of the vehicle, but also enhance the safety and durability of the vehicle.
The main functions of the front bumper of a car include the following aspects :
absorption and mitigation of external impact : The front bumper is designed to absorb and mitigate the external impact on the vehicle, especially in the event of a collision, to effectively protect the body and occupant safety. Through its structure and material characteristics, the bumper will disperse and absorb the impact force to reduce the direct damage to the body .
Protection of pedestrians : in the event of an accident, the front bumper can not only protect the vehicle, but also protect pedestrians to a certain extent. Some new bumper designs take pedestrian safety into account, using softer materials to reduce injuries to pedestrians .
Distributed impact force : When a vehicle crashes, the bumper first contacts the impactor, and then the force is distributed to the energy absorption boxes on both sides, and then transferred to the other structure of the body. This design helps to disperse the impact force and reduce damage to the body structure .
decorative function : The front bumper is not only a functional safety device, but also has a decorative role. Modern car design pays attention to the appearance of beauty, as a part of the body, the bumper is often designed to be very fashionable and attractive .
aerodynamic action : The design of the bumper also takes into account the aerodynamic effect, which helps to reduce the air resistance of the vehicle while driving, improve the fuel economy and driving stability of the vehicle .
The structural composition of the front bumper includes an outer plate, a cushioning material and a cross beam. The outer plate is usually made of plastic and has good elasticity and impact resistance; The cushioning material further absorbs the impact force; The beam provides the main support .
The front bumper is also made of different materials and connected . Traditional bumpers may use steel plates stamped into channels and connected to the frame stringer by riveting or welding. Modern bumpers are made of more plastic materials, joined by screws or other removable designs for easy repair and replacement .
The common causes and treatment methods of the upper body failure of the front bumper mainly include the following:
slightly chipped or dented : If the front bumper is only slightly chipped or dented, try to repair it yourself. There are many special products on the market to repair bumper dents, such as foam shafts, plastic rods, etc., by pressing the way to restore the dents . In addition, it can be repaired using the hot water method or the hot air gun method. The hot water method is to pour hot water on the depressed part, and apply pressure from the inside to restore the original state after the plastic is softened. The heat gun method is to evenly heat the concave area and then push it from the inside .
serious damage : If the bumper is badly damaged and cannot be repaired by itself, you need to go to a professional auto repair shop or 4S shop to replace it. When replacing, it is necessary to choose the quality and color consistent with the original parts to ensure the beauty and safety of the vehicle . During the removal and installation, be careful to avoid damaging peripheral parts, such as the wipe strip and headlamp .
clasp damaged : If the bumper is dislocated or the clasp is damaged, you can try to warm the clasp with hot water to soften it and then reinstall it. If not, it is recommended to ask a professional repair master to check and repair, may need to be fixed in the internal welding nail .
cracks or larger dents : For larger dents or cracks, thermoplastic repair or replacement of a new bumper may be required. Thermoplastic repair requires the use of professional tools to heat the damaged area to a certain temperature to return it to its original .
inspection and maintenance : regularly check the surface, edge, assembly gap of the bumper, to ensure that there is no obvious scratching, cracking, falling and other phenomena. Touch to check for irregular bumps or depressions, listen to the sound to determine whether there is damage inside .
After repair, wipe the surface with a clean damp cloth to check whether it is completely restored to its original state. If there are minor scratches, use the fine sandpaper specially used for automotive beauty to polish .
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