Novel automobile bumper

Abstract

The invention discloses a novel automobile bumper with the good buffer effect. The novel automobile bumper comprises an inner protective board and an outer protective board. A buffer airbag is arranged between the inner protective board and the outer protective board. The outer protective board is made of polypropylene materials, the inner protective board is made of tungsten carbide materials, and the buffer airbag is made of butyl rubber. By adopting the technical scheme, the outer protective board made of polypropylene materials continues to be adopted, and injures caused to pedestrian in an accidental collision are reduced; if a simple collision occurs, maintenance is easy, and the cost is low; due to the additionally-arranged inner protective board made of tungsten carbide materials, the firmness of the bumper is greatly improved, and the safety of a driver is improved; in addition, the buffer airbag is additionally arranged, so that the good buffer effect is achieved, and the good protection effect on persons inside an automobile is achieved.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a novel 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 d...

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.

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