Secure automobile bumper

Abstract

The invention discloses a secure automobile bumper with an excellent buffering effect. The secure automobile bumper comprises an inner fender and an outer fender, a buffering air bag is arranged between the inner fender and the outer fender, the outer fender is prepared from a polypropylene material, the inner fender is prepared from a tungsten carbide material, and the buffering air bag is prepared from butyl rubber. According to the technical scheme, by adopting the outer fender prepared from the polypropylene material, harm to a pedestrian by accidental collision is reduced, if simple collision happens, the maintenance is simple, and the cost is low; by adding the inner fender prepared from the tungsten carbide material, the fastness of the bumper is greatly improved, and the safety of a driver is improved; besides, by adding the buffering air bag, the excellent buffering effect can be achieved, and the excellent protection effect for people inside an automobile is achieved.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a safe auto bumper with good cushioning effect. Background technique [0002] With the continuous increase of the number of automobiles, collisions and rear-end collisions between automobiles are very frequent. In order to protect the people in the car well, the head and tail of the car are provided with bumpers. In the past, the bumpers of cars were all made of metal materials. This kind of bumper is stronger and has better protection effect, but the cost of the bumper made of metal is higher, and if there is an accidental collision, the bumper made of metal will be damaged. In the case of a dent, it is difficult to recover, and if it accidentally hits a pedestrian, it will cause too much damage to the pedestrian. [0003] At present, there is a bumper made of polypropylene material on the market. This material has a high melting point (up to 167°C), heat resistance, and de...

AI Technical Summary

Problems solved by technology

In the past, the bumpers of cars were all made of metal materials. This kind of bumper is stronger and has better protection effect, but the cost of the bumper made of metal is higher, and if there is an accidental collision, the bumper made of metal will be damaged. Dented condition, difficult to restore, and too much damage to pedestrians if accidentally hit

[0003] At present, there is a bumper made of polypropylene material on the market. This material has a high melting point (up to 167°C), heat resistance, and density (0.90g / cm3), which is the lightest among general-purpose plastics. It has high corrosion resistance (tensile strength 30MPa), and the strength, rigidity and transparency of its products are relatively good. The disadvantage is that the low temperature resistance is poor (made of impact PP copolymer, styrene elastomer It is a blended modified material composed of three kinds of polyolefin rubber, which has high rigidity, impact resistance, scratch resistance and paintability. After the injection molding bumper is loaded, it will not be broken by the impact of 8km / h, and has Recovering elasticity, the performance is similar to PU, and the cost is reduced by 10% to 20%)

However, this kind of material has great potential safety hazards. If the speed of the vehicle is too fast, it will cause inestimable damage to the people in the vehicle.

[0004] In addition, when the vehicle body collides, many drivers cannot react quickly and make correct operations, and some even perform wrong operations because of nervousness, resulting in great losses

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