Sub-frame of multi-link suspension system

Abstract

The invention relates to a sub-frame of a multi-link suspension system. The sub-frame comprises a V-shaped upper cross beam, a right longitudinal beam and a left longitudinal beam, and further comprises a first right mounting bracket, a first left mounting bracket and a U-shaped lower cross beam, wherein one end of the first right mounting bracket is connected to the other end of one side face of the right longitudinal beam and the other end of the first right mounting bracket is connected to the right of the upper cross beam; one end of the first left mounting bracket is connected to the other end of one side face of the left longitudinal beam and the other end of the first left mounting bracket is connected to the left of the upper cross beam; the right end of the lower cross beam is connected to the first right mounting bracket and the left end is connected to the first left mounting bracket; the sub-frame is characterized in that a trapezoidal rear ring beam component is composed of a first round steel pipe, a second round steel pipe, a third round steel pipe, a fourth round steel pipe and a base plate; and the rear ring beam component is connected to both the upper beam and the lower beam. The sub-frame disclosed by the invention can meet functional requirements, and also can be used for guaranteeing the precision of mounting point, reducing self-weight and saving cost.

Description

technical field [0001] The invention belongs to automobile parts, in particular to a sub-frame of a multi-link suspension system. Background technique [0002] The sub-frame is a bracket that supports the front and rear axles and suspensions. The axles and suspensions are connected to the frame or the body through it. The force and moment are transmitted to the body to block vibration and noise, so they mostly appear on luxury cars and off-road vehicles. The structure of the existing sub-frame assembly is mostly in-line shape, as disclosed in CN 202080336 U "a kind of rear sub-frame assembly of automobile". It includes a rear sub-frame body. The middle part of the rear sub-frame body is low and flat, and both ends are bent upwards. The lower plate, the lower plate of the right rear subframe, the connecting support of the left rear stabilizer bar, the connecting support of the right rear stabilizer bar, the bracket of the left rear upper tie rod, the bracket of the right re...

AI Technical Summary

Problems solved by technology

If the accuracy error of the installation position with the body is too large, it will lead to an error in the accuracy of the installation bracket on the entire subframe, that is, a large error in the hard point of the entire suspension, which will affect the stability and comfort of the vehicle.

In addition, the welding heat of the subframe of the existing multi-link suspension system is large, which will also lead to poor product consistency

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