Composite rubber suspension of automobile front-end module

Abstract

The invention discloses a composite rubber suspension of an automobile front-end module. The composite rubber suspension of the automobile front-end module comprises an upper suspension part, a lowersuspension part and an inner suspension mounting hole. The cross section of the upper suspension part is oval, and a plurality of evenly-distributed blind holes are formed in the edge of the upper suspension part in the circumferential direction so that the rigidity of the upper suspension part can be reduced, and the vibration isolation rate in the X direction is made different from the vibrationisolation rate in the Y direction. When the upper suspension part is mounted on a front-end module frame, clearance fit is achieved in the long-axis direction, and transition fit is achieved in the short-axis direction, so that a positioning function is achieved, and the vibration isolation rate in the long-axis direction is increased. The outer contour of the lower suspension part is in the shape of a circular cone, and an insert made from other materials is arranged in the lower suspension part. The inner suspension mounting hole penetrates through the upper suspension part and the lower suspension part. Two lines of vertically-arrayed dot matrixes are arranged in the inner suspension mounting hole, so that the rigidity of the suspension is reduced while the requirement for fatigue durability is met. Compared with an existing suspension, the composite rubber suspension has the advantages that under the same boundary dimension condition, wider rigidity and damping ranges can be obtained, and the better fatigue durability and dynamic rigidity are also obtained.

Description

Technical field [0001] The invention relates to the field of isolating the vibration of an automobile front-end module (condenser-intercooler-radiator-fan), in particular to a composite rubber suspension of an automobile front-end module. Background technique [0002] At present, with the rapid development of the automotive industry, the problem of vibration and noise (NVH) has become increasingly prominent. Vibration and noise reduction has become an important part of automotive design work. Therefore, the vibration and noise generated by the front-end module cannot be ignored. At the same time, the automotive industry is gradually developing towards integration and light weight. Therefore, it is necessary to optimize the suspension structure as much as possible to ensure good vibration isolation performance of the front-end module. For the existing front-end module suspensions, most of them use circular traditional rubber suspensions. However, because the X-direction and Y-dire...

AI Technical Summary

Problems solved by technology

For the existing front-end module mounts, most of them adopt circular traditional rubber mounts. However, due to the different X-direction and Y-direction vibrations generated by the front-end modules, the requirements for mount vibration isolation are also different. The traditional circular Shaped rubber mounts often cannot meet this need

Moreover, most of the existing rubber mounts use a single rubber material. When the mount has a large displacement, because the linear section of the mount stiffness is short, when the front-end module has a large displacement, the mount stiffness will increase sharply. The problem of poor vibration isolation rate of the mount is caused. At the same time, the traditional single rubber material mount has a large dynamic stiffness, which often cannot meet the vibration isolation requirements at high frequencies.

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