Automobile bumper energy absorber with high energy absorption performance

Abstract

The invention discloses an automobile bumper energy absorber with high energy absorption performance, which is used for solving the problem of double requirements of considering the small installation space of a small automobile and ensuring efficient energy absorption. The automobile bumper energy absorber comprises an energy absorber shell and a frame in the shell; after improvement, the cross section of the energy absorber shell is a symmetric octagon which is composed of two mutually corresponding long sides, two mutually corresponding short sides and four corners connecting the long withshort sides; the cross section of the frame of the energy absorber is elliptical; four reinforcing ribs are arranged between the shell and the frame; and each reinforcing rib extends to the frame from the middle of the long and short sides of the shell and is jointed with the frame. The energy absorber structure of the invention can cause the whole stress of the energy absorber to be uniform and avoid collision and breakage caused by local excessive stress. Compared with the existing energy absorber in the same type, the energy absorber of the invention greatly reduces the overall size, meetsthe installation space of the small automobile and can ensure efficient energy absorption as well.

Description

technical field [0001] The invention relates to a vehicle device, in particular to a high-efficiency energy-absorbing bumper energy absorber suitable for small cars, and belongs to the technical field of automobiles. Background technique [0002] With the rapid development of the automobile industry, lightweight has become a mainstream direction of automobile development. The safety, comfort, and environmental protection of small cars are important quality indicators of modern cars. Improving the safety and economy of cars in collision situations has become an important topic in the study of passive safety of cars. Automobile bumper is an important part to maximize the safety of occupants in the event of a car collision. Its main components include a beam and an energy absorber connected between the beam and the mounting plate of the car body. The energy absorber is a component that fully absorbs the kinetic energy of the collision and reduces the maximum impact force to ea...

AI Technical Summary

Problems solved by technology

in, image 3 The section shape of the energy absorber shown is simple, the skeleton of the energy absorber is relatively thin, and its deformation resistance is weak. Therefore, it is necessary to increase the length and section dimensions to meet the energy absorption requirements of the product; Figure 4 The energy absorber shown is hexagonal, and its core skeleton is also hexagonal. Compared with figure 1 The energy absorber has a better energy absorption effect, but its structural shape leads to a larger section size, and the transmission force is not uniform

Lightweight small cars, due to the compact structure of the front part of the car, there is limited space for installing energy absorbers. The size of the device and the blind pursuit of improving the mechanical properties of the material are bound to greatly increase the cost of the product.

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