Mutually inserted rear auxiliary frame

Abstract

The invention discloses a mutually inserted rear auxiliary frame comprising a left longitudinal beam and a right longitudinal beam. A first front transverse section and a first rear transverse direction which face the right longitudinal beam horizontally extend from the front and rear ends of the left longitudinal beam respectively. A second front transverse section and a second rear transverse direction which face the left longitudinal beam horizontally extend from the front and rear ends of the right longitudinal beam respectively. The first front transverse section of the left longitudinalbeam and the second front transverse section of the right longitudinal beam are inserted into each other to form a front cross beam. The first rear transverse section of the left longitudinal beam andthe second rear transverse section of the right longitudinal beam are inserted into each other to form a rear cross beam. The rear auxiliary frame is formed by inserting and welding the left and right longitudinal beams to each other, has less parts, reduces mold development, has less welding points, is convenient to machine, and can reduce the influence of welding heat on the aluminum alloy materials of the left and right longitudinal beams. The length of the butt joint portion of the left and right longitudinal beams can be adjusted to adjust the length of the front cross beam in order thatthe rear auxiliary frame adapts to different vehicle models and different wheel tracks, realizing a platformized and generalized chassis, and reducing the development cost of the new vehicle.

Description

technical field [0001] The invention relates to a vehicle rear auxiliary frame structure, in particular to a plug-in rear auxiliary frame. Background technique [0002] The performance of the car chassis is nothing more than the two themes of comfort and handling, and these two themes are a pair of contradictions that restrict each other. The traditional suspension system can usually only be adjusted in one direction, that is, the suspension system that focuses on handling will inevitably lose some comfort performance, and the suspension that focuses on comfort will inevitably affect some handling performance. In order to achieve a balance between comfort and handling, some equipment and designs that have a greater impact on comfort and handling have also emerged as the times require. The subframe is a typical representative. [0003] At present, most of the sub-frames are generally four beams connected by welding to form a frame structure, and each beam is welded by upper...

AI Technical Summary

Problems solved by technology

This technical solution consists of two longitudinal beams and front and rear beams, with many parts and complex structure, which indirectly leads to more molds and fixtures, more installation procedures, and the longitudinal beams and rear beams are fixed by nuts, which has poor fixability

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