A kind of sealing device for automobile

Abstract

The invention discloses a sealing device for automobiles, comprising a composite sealing gasket, 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, and the composite sealing gasket There are more than two layers of sealing material. The composite sealing gasket includes a metal gasket layer, a sealed air cavity layer, and a composite coating layer, and the sealed air cavity layer is arranged in the middle layer of the composite sealing gasket. Coating rubber on the surface of the gasket such as copper or aluminum can improve the sealing effect of the gasket by improving the local deformation of the surface of the gasket, so that the two sealing joint surfaces can be better sealed, and reduce leakage, leakage, etc. Phenomenon. Effectively improve the service life of the sealing gasket. Effectively guarantee the amount of rebound of the gasket. Improve the local deformation ability of the gasket; safe and reliable; better sealing performance; longer 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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