What is the upper part of the rear bumper of a car
The part above the rear bumper of a car is commonly referred to as the rear bumper trim, mask, upper trim or guard . The main function of these components is to beautify the rear of the vehicle and protect the bumper area from external damage .
In addition, some models may also have a rear wing above the bumper, called a tailgate trim, which not only enhances the appearance of the vehicle but also optimizes the aerodynamic performance of the vehicle and reduces air disturbance and drag at the rear .
Material and function
The rear bumper is usually made of plastic. This material can return to its original shape by its own elasticity as long as it does not exceed its load-bearing limit after being deformed by external force. Plastic bumper consists of three parts: outer plate, buffer material and crossbeam. The outer plate and buffer material are made of plastic, and the crossbeam is formed into a U-shaped groove by stamping cold-rolled sheet and attached to the outer plate and buffer material .
Design and installation
The upper part of the rear bumper may vary by model. It is recommended to refer to the model 's manual or consult the automaker for the exact name and details .
Youdaoplaceholder0 The main functions of a car rear bumper include protecting the vehicle, absorbing energy, beautifying the appearance and assisting driving . Specifically:
Youdaoplaceholder0 Protect the vehicle : The rear bumper can absorb and mitigate external impact forces, protecting the rear of the vehicle from collision damage. It can bear the impact first in the event of a rear-end collision and deliver the impact to the rear of the vehicle, reducing damage to occupants and the interior .
Youdaoplaceholder0 Absorb energy : The rear bumper usually contains cushioning materials such as plastic or composite materials, which can effectively absorb energy in the event of a collision and reduce damage to the vehicle and its occupants. Plastic bumpers perform particularly well in minor impacts because of their light weight and high elasticity .
Youdaoplaceholder0 Beautify the appearance : The design of the rear bumper is usually in harmony with the overall style of the vehicle, which not only protects the vehicle but also enhances its aesthetic appeal. A proper rear bumper design can make the vehicle look more complete and beautiful from the back .
Youdaoplaceholder0 Assisted driving : Modern car rear bumpers often integrate safety technologies such as reversing radars and cameras to help drivers reverse more safely and enhance the overall safety of the vehicle .
The repair method for plastic damage to the rear bumper of a car should be selected based on the degree of damage:
Youdaoplaceholder0 Minor damage repair (for DIY)
Youdaoplaceholder0 Toothpaste or touch-up pen to deal with .
For superficial scratches, toothpaste or a touch-up pen can be used to cover them. The abrasive components in toothpaste can fill in fine scratches, while the touch-up pen is used to recolor the areas with peeling paint.
When operating, apply gently along the direction of the scratch to avoid repeated friction that may cause more serious damage.
Youdaoplaceholder0 Self-spray paint repair .
If the scratch is deep but does not damage the primer, you can choose to spray a self-spray paint of the same color as the vehicle body locally. Pay attention to controlling the spraying distance and thickness to avoid color differences.
The following is a video about the repair of minor injuries:
Youdaoplaceholder0 Repair of moderate damage (with professional tools)
Youdaoplaceholder0 Plastic welding torch or hot air gun treatment .
For small areas of depressions or cracks, a plastic welding torch can be used to heat and soften the plastic, and then manually shape it or reset the welding fragments. After repair, it needs to be sanded smooth and painted.
If there are no professional tools available, you can try using a hot air gun (with the temperature controlled at around 40℃) to assist in correcting the deformed area.
Youdaoplaceholder0 Repair agent fill .
Use two-component epoxy resin adhesives or special plastic fillers (such as 3M PN4247) to fill cracks or holes. Before operation, the surface should be cleaned and crack holes drilled to ensure a firm bond.
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