Automobile sealing device

Abstract

The invention discloses an automobile sealing device, which comprises a composite sealing gasket, wherein the composite sealing gasket is arranged between a bearing and a bearing end cover; the bearing is arranged at the end of a transmission shaft; the composite sealing gasket consists of more than two layers of sealing materials and comprises a metal gasket layer, a closed air cavity layer and a composite coating layer; and the closed air cavity layer is arranged in a middle layer of the composite sealing gasket. Rubber is coated on the surface of copper or aluminum gaskets, and the local deformation of the surface of the gasket is improved, so that two sealing joint surfaces are in good sealing fit; and therefore, the sealing effect of the gasket is improved, and leakage, seepage and other untight sealing phenomena are avoided. The service life of the sealing gasket is effectively prolonged, the resilience of the gasket is effectively guaranteed, the local deformation capacity of the gasket is improved, and the sealing device is safe, reliable, high in sealing performance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle parts manufacturing, and in particular relates to a sealing device for automobiles. Background technique [0002] At present, in the field of manufacturing technology of sealing devices for motor vehicle parts, the sealing device is a sealing spare part used for fluid passages such as machinery, equipment, and pipelines. It uses internal and external parts to seal equipment and pipelines. In the prior art, sealing devices mostly use sealing gaskets. The sealing gaskets are made of metal or non-metallic plate materials through cutting, stamping or cutting processes. They are used for the sealing connection between pipelines and the sealing of machinery and equipment. A sealed connection between parts. According to the material, it can be divided into metal sealing gasket and non-metallic sealing gasket. Metal gaskets include copper gaskets, stainless steel gaskets, iron gaskets, aluminum ga...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the ordinary sealing gaskets in the prior art have poor sealing performance because the machined surface cannot be perfect, or the roughness of the machined surface is poor; Rust, limited use, and often the sealing effect is reduced. In severe cases, the seal will fail and cause losses; after long-term use, automatic sealing compensation cannot be realized, which greatly affects the sealing effect and other technical problems. automotive seal

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