I-shaped front auxiliary frame with simple and stable structure for electric vehicle

Abstract

The invention provides an I-shaped front auxiliary frame with simple and stable structure for an electric vehicle, which comprises an auxiliary frame main body beam, the left end of the auxiliary frame main body beam is connected with a swing arm mounting support left supporting beam, and the right end of the auxiliary frame main body beam is connected with a swing arm mounting support right supporting beam. The swing arm mounting support left supporting beam penetrates through the left end of the auxiliary frame main body beam in the front-back direction, the swing arm mounting support right supporting beam penetrates through the right end of the auxiliary frame main body beam in the front-back direction, and the swing arm mounting support left supporting beam and the swing arm mounting support right supporting beam are parallel. And the swing arm mounting bracket left supporting beam, the auxiliary frame main body beam and the swing arm mounting bracket right supporting beam are arranged in an I shape. The invention has the beneficial effects that the H-shaped structural design is adopted, the structure is simple, the layout is compact, the light weight advantage is obvious, and the cost is low.

Description

technical field [0001] The invention relates to a front sub-frame, in particular to a front sub-frame with a simple and stable "I"-shaped structure for an electric vehicle. Background technique [0002] With the advancement of national policies and the demand for environmental protection, electric vehicles are developing more and more rapidly, and the components of electric vehicles are also constantly developing. Front subframes are also widely used in electric vehicles. The front subframe provides installation points for the stabilizer bar system, steering system, suspension system, drive system and other systems, and is an important safety and load-bearing component. It supports all sprung masses, and at the same time bears and transmits various forces and moments generated during the driving process of the car. Therefore, the stiffness, strength, modal, and fatigue life of the subframe play a vital role in the overall safety, reliability, operational stability, and ride...

AI Technical Summary

Problems solved by technology

[0005] However, the front sub-frame of an electric vehicle needs to provide installation points and space for the electric system in addition to the installation of the traditional stabilizer bar system, steering system and suspension system, and provide protection for the battery. More functional requirements mean that the structure is more complex. Complex, heavier, more assembly steps

Casting aluminum alloy sub-frames or welded aluminum sub-frames have certain advantages in light weight, but their cost is 2 to 4 times higher than that of steel sub-frames. Aluminum sub-frame design and production experience are less, and the market verification is not yet sufficient. It will take a long time for the popularization of aluminum sub-frames

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