Auxiliary frame assembly and automobile

Abstract

The invention provides an auxiliary frame assembly and an automobile, the auxiliary frame assembly comprises an auxiliary frame and a double-fork-arm suspension, the double-fork-arm suspension comprises a lower fork arm and an upper fork arm, the lower fork arm comprises a lower front support arm and a lower rear support arm, the front end of a longitudinal beam of the auxiliary frame is bent outwards, so that a bending point is formed on the longitudinal beam, and the front end of the longitudinal beam is bent outwards. The inner end of the lower front supporting arm is connected to the longitudinal beam, and the connecting point is located in front of the bending point. The inner end of the lower rear supporting arm is connected to the longitudinal beam, and the connecting point is located behind the bending point. The auxiliary frame assembly guides the front sides of the wheels to deflect inwards in the initial stage of the front small-offset collision process of the automobile, so that the automobile slides transversely to be away from the rigid barrier in the middle and later periods of the front small-offset collision process, and the possibility that the automobile body is subjected to impact deformation due to large-area contact between the automobile body and the rigid barrier in the later period of the front small-offset collision process is reduced. Therefore, not only is the collision safety of the automobile improved, but also a reinforcing structure of the automobile body can be properly reduced due to the fact that the automobile body does not bear too large impact, and the automobile body can be lightened.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a subframe composition of an automobile. Background technique [0002] Double-wishbone suspension is also called double-A-arm independent suspension. The double-wishbone suspension has two upper and lower wishbone, and the two wishbone can absorb lateral force at the same time. Therefore, the lateral stiffness is large and the sports control performance is excellent. It is mostly used in high-end vehicles. luxury brand. In recent years, with the emergence of pure electric high-end brands, double wishbone suspension is gradually being applied to pure electric vehicles. [0003] The light weight of the body is very important to improve the cruising range of pure electric vehicles. However, the current mainstream design concept for pure electric vehicles equipped with double-wishbone suspension is: in the event of a frontal small offset collision (less than 25% of the frontal o...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the current pure electric vehicles on the market will carry out enhanced design on the A-pillar, upper side beam, door sill and other parts of the body to meet the energy absorption requirements of the body, which makes the body unable to achieve lightweight

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