The front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but also more importantly are safety devices that absorb and mitigate external impact forces, protect the car body, protect the car body and the safety functions of the passengers.
The plastic bumper is composed of an outer plate, a buffer material and a beam. The outer plate and the buffer material are made of plastic, and the cross beam is punched into a U-shaped groove by a cold-rolled sheet with a thickness of about 1.5 mm; the outer plate and the buffer material are attached to the cross beam, and the cross beam is screwed with the frame longitudinal beam, which can be at any time Remove it. The plastic used in this plastic bumper is generally made of polyester and polypropylene materials, and is made by injection molding.
The bumper has the functions of safety protection, decoration of the vehicle and improvement of the aerodynamic characteristics of the vehicle. From a safety point of view, the car can play a buffering role in the event of a low-speed collision and protect the front and rear bodies; it can also play a role in protecting pedestrians in the event of an accident with a pedestrian. From the appearance, it is decorative and becomes an important part to decorate the appearance of the car. At the same time, the car bumper also has a certain aerodynamic effect.
At the same time, in order to reduce the passenger’s injury to the passenger in the event of a side collision, a door bumper is usually installed on the car to enhance the impact resistance of the door. This method is practical, simple, and has little modification to the body structure. It has been widely used.
The installation of door bumpers is to place several high-strength steel beams horizontally or obliquely in the door panel of each door, which plays the role of front and rear bumpers, so that the entire car has bumpers “front and rear”. , Forming a “copper wall iron wall”, so that car occupants have a maximum safe area. Of course, installing such a door bumper will undoubtedly increase some costs for car manufacturers, but for car occupants, safety and security will increase a lot.