Front auxiliary frame assembly of electric passenger vehicle

Abstract

The invention discloses a front auxiliary frame assembly of an electric passenger vehicle. The front auxiliary frame assembly comprises a front auxiliary frame body lower plate, a front auxiliary frame body upper plate and lining structures assembled on the two sides of the front auxiliary frame assembly. The front auxiliary frame assembly is assembled with a vehicle body through the lining structures. The lining structures are divided into front side lining structures and rear side lining structures; the front side lining structures are integrated on the two sides, close to the front end, of the front auxiliary frame assembly through connecting plates; and the rear side lining structures are integrated on the two sides, close to the rear end, of the front auxiliary frame assembly. According to the front auxiliary frame assembly, the mounting positions of a front lower swing arm, a front stabilizer bar, a steering gear, a front axle rear suspension and a motor lower protection plate are provided, modular assembly can be achieved when the front auxiliary frame assembly is assembled with a vehicle body, and the assembly efficiency is improved; in addition, compared with a shoe-shaped gold ingot type money frame without a bush, the front auxiliary frame assembly has better vibration isolation and vibration filtering performance due to the fact that the front auxiliary frame assembly is arranged on the assembling portion of the vehicle body in a press-fitting mode.

Description

technical field [0001] The invention relates to the technical field of automobile suspension structures, in particular to a front sub-frame assembly of an electric passenger car. Background technique [0002] The sub-frame is a very important safety and load-bearing component in the chassis of cars and SUVs. The sub-frame supports the axle load and spring-loaded mass, isolates the vibration of the drive unit, and bears and transmits various forces and moments generated during the driving process of the car. . [0003] The subframe is the intermediate buffer body connecting the body and the suspension. By adjusting the stiffness of the subframe bushing, it can play a role in regulating the comfort and maneuverability of the vehicle. At present, the structural forms of the front subframe of electric passenger cars on the market are mainly divided into: "Yuanbao" type subframe, and "well" type frame type subframe, etc. [0004] First of all, the "Yuanbao" type subframe is gen...

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Problems solved by technology

[0004] First of all, the "Yuanbao" type subframe is generally used in low-end models, with low cost, high overall stiffness and high modulus, and generally no bushings connected to the body, and the vibration isolation effect is poor;

[0005] Secondly, the "well"-shaped frame-type subframe is generally used in mid-to-high-end models, and the cost is high. Compared with the "Yuanbao" type subframe, the overall stiffness and mode are lower

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