Upper oscillating arm assembly of automobile double-wishbone suspension

Abstract

The invention aims to provide an upper oscillating arm assembly of an automobile double-wishbone suspension, which has the advantages of light weight, simple structure, low manufacture cost and convenience for installation. The upper oscillating arm assembly of the automobile double-wishbone suspension comprises an upper oscillating arm body provided with a ball pin assembly and is characterized in that two free ends of the oscillating arm body are connected by bolts; the upper oscillating arm body is subjected to punch forming by a single layer of steel plate; the cross section of the upper oscillating arm body is of a groove shape of which the opening faces upwards or downwards; and the opening of the groove shape is gradually reduced to free ends on two ends from the ball pin assembly. The upper oscillating arm assembly of the automobile double-wishbone suspension has the advantages of simple and reasonable structure, light weight, low manufacture cost and convenience for install and is very suitable to apply for low and medium-grade automobiles.

Description

technical field [0001] The invention belongs to the technical field of automobile front suspension, and in particular relates to an upper swing arm assembly of a double-wishbone suspension. Background technique [0002] The existing double-wishbone suspension upper swing arm assembly mainly has the following forms: 1. One is that the upper swing arm body is formed by stamping and welding two pieces of sheet metal up and down, and one side of the upper swing arm body is passed through The bolt is connected with the ball stud assembly, and the other side is press-fitted with the forged mandrel through two bushing assemblies. At the same time, 2 to 3 mounting holes need to be machined on the mandrel, and then 2 to 3 bolts are passed It is connected with the body (or frame); the upper swing arm assembly in this way is heavy, the processing technology is complicated, the assembly process is cumbersome, the non-suspension mass of the suspension is relatively heavy, and the deform...

AI Technical Summary

Problems solved by technology

[0002] The existing double-wishbone suspension upper swing arm assembly mainly has the following forms: 1. One is that the upper swing arm body is formed by stamping and welding two pieces of sheet metal up and down, and one side of the upper swing arm body is passed through The bolt is connected with the ball stud assembly, and the other side is press-fitted with the forged mandrel through two bushing assemblies. At the same time, 2 to 3 mounting holes need to be machined on the mandrel, and then 2 to 3 bolts are passed It is connected with the body (or frame); the upper swing arm assembly in this way is heavy, the processing technology is complicated, the assembly process is cumbersome, the non-suspension mass of the suspension is relatively heavy, and the deformation of the welding assembly is difficult to control, resulting in consistent products poor sex

2. The second type is that the body of the upper swing arm is processed by casting, and the ball stud base is directly processed on the casting body. Compared with the first type, this structure eliminates stamping and welding deformation, but the mandrel structure remains unchanged. , also has the disadvantages of heavy weight, relatively heavy suspension and non-suspension quality, and complicated processing technology.

3. The third type is that the body of the upper swing arm is made of cast aluminum or forged aluminum, and the mandrel is also canceled. Although this structure can reduce the quality of the product itself and the quality of the non-suspension, but due to the immature domestic technology and the processing technology Difficult and costly, it is currently mainly used in high-end luxury cars, and cannot be popularized in mid- and low-end cars for the time being

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