A car front suspension structure

Abstract

The invention provides an automobile front suspension structure, which belongs to the technical field of automobiles. It solves the problem that the existing automobile engine has poor accuracy of falling off during a collision and the problems of inconvenient maintenance and higher cost in the later period. According to the front suspension structure of the automobile, there are two body longitudinal beams arranged at intervals in the engine compartment of the automobile. The suspension structure of the subframe is connected with the subframe and is located between the two longitudinal beams of the vehicle body. The material strength of the vehicle frame and the longitudinal beams of the vehicle body is greater than that of the connecting bolts, and the connecting bolts can break when the sub-frame is displaced longitudinally relative to the longitudinal beams of the vehicle body. The invention can make the engine and the sub-frame sink and fall off when the car collides, avoiding intrusion into the driver's cab, and has higher fracture accuracy of connecting bolts, avoiding unnecessary fracture.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to an automobile front suspension structure. Background technique [0002] With the continuous improvement of living standards, the penetration rate of automobiles continues to increase. However, the accident rate of automobiles remains high all the time. Therefore, the safety performance of automobiles has always been an important indicator of automobile performance. Since most of the current automobiles adopt a front-drive structure, the powertrain is usually installed in the engine compartment in front of the cab. When a frontal collision occurs, the rigid engine may be forced to move backwards and squeeze into the cab, causing the driver to The cabin space becomes smaller, causing injury to the driver and passengers. [0003] In order to avoid the above situation, at present, automobile companies have developed engine sinking technology, so that the engine can move downward ...

AI Technical Summary

Problems solved by technology

However, since the connection strength between the connection block and the reinforcement bracket depends entirely on the welding strength between the two, and because the welding strength will be affected by the welder, and the influence is large, it is impossible to accurately control the connection block and the reinforcement bracket. The strength of the connection between them, that is, the stress conditions when the engine sinks cannot be guaranteed, resulting in the possibility that the engine cannot be disengaged or may fall off early under a small impact, and every time the engine is disengaged, it will cause damage to the reinforcing bracket and need to be replaced Strengthen the bracket and re-weld the detached structure, the maintenance operation is more cumbersome and the cost is higher

Moreover, in this solution, the engine is partly connected to the side beams of the body and partly connected to the subframe, so that even after the subframe falls off, the engine may still be connected to the side members of the body and cannot fall, resulting in engine intrusion driving. room risk

Images