Automobile lower arm assembly

Abstract

Automobile lower swing arm assembly, including swing arm and swing arm reinforced lower plate. The swing arm includes large and small bush hole assemblies, ball stud assembly and swing arm body; in the assembled state, the ball stud assembly is used to connect the steering knuckle, the small bush hole body assembly and the large bush hole The body assemblies are respectively used to connect the car bodies. The connection between the small bushing hole assembly and the swing arm body extends to the side of the large bushing hole body assembly to form an avoidance bending structure, which is concave inward toward the swing arm body, and the avoidance bending structure is used to avoid the auxiliary vehicle shelf. The reinforced lower plate of the swing arm is fastened and welded with the main body of the swing arm, and the shape matches. The local stiffener structure with ribs facing upwards. The local rib structure with upward ribs can improve the local longitudinal stiffness of the lower swing arm, and the welding edge at the welding overlap position of the swing arm reinforced lower plate and the avoidance bending structure will be thicker, which has a better welding fatigue strength retention effect.

Description

technical field [0001] The invention belongs to an automobile suspension system, in particular to an automobile lower swing arm assembly. Background technique [0002] The front suspension swing arm (also known as the automobile lower swing arm) is a component connecting the steering knuckle and the subframe (or body), which mainly transmits the longitudinal and lateral loads excited by the road surface to the subframe (or body), which is the suspension critical components of the system. In order to ensure that the swing arm has sufficient rigidity and strength, the swing arm usually adopts the upper and lower two plate buckle welding structure. The bushing hole body assembly 4a, the large bushing hole body assembly 5a and the bolt and nut assembly 6a are composed, see figure 1 shown. The advantages of this structure are high rigidity and high strength, but the disadvantage is that the process is complicated, the assembly precision is high, and the weight is relatively la...

AI Technical Summary

Problems solved by technology

Its advantage is that it is light in weight, and at the same time, the process of molding and assembly is relatively simple. However, since the installation hole 7b is usually reserved in the middle of the swing arm to facilitate the disassembly and assembly of the sub-frame, etc., at the same time, in order to meet the clearance requirements with the sub-frame, the middle installation hole is made 8b has a small cross-sectional size and low structural strength. It is usually only suitable for small cars or light vehicles with light vehicle weight. The versatility deviates and has certain limitations.

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