Engine air filter discharge pipe sealing structure

Abstract

The present invention relates to an air filter outlet pipe seal structure of engine. It includes pipe self-body made of engineering plastics and sealing rubber cover. On the inner walls of connecting portions of two ends of said pipe self-body several positioning grooves are cut, on the sealing rubber cover several positioning projections which are correspondent to the above-mentioned positioning grooves are set, said invention utilizes the elasticity of rubber to make the rubber cover be fastened into the positioning groove of pipe self-body, so that the pipe self-body and rubber cover can be tightly combined together so as to implement the invented seal structure.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a tube sealing structure of an engine. Background technique [0002] At present, the outlet pipe of the air filter on the car engine is mostly made of a single material. For example: some use rubber, although the softness of the rubber material can meet the sealing performance of the joint, but it is not rigid enough because of its own softness when catering to the engine's rapid acceleration and deceleration conditions. Increase the wall thickness of the rubber tube. Some use engineering plastics, which have sufficient rigidity, but the sealing performance of the joints is difficult to guarantee, so the method of changing the wall thickness has to be adopted, which increases the manufacturing cost. There is also a rubber-plastic composite structure, although the sealing and rigidity can be taken into account, but the production process is cu...

AI Technical Summary

Problems solved by technology

For example: some use rubber, although the softness of the rubber material can meet the sealing performance of the joint, but it is not rigid enough because of its own softness when catering to the engine's rapid acceleration and deceleration conditions. Increase the wall thickness of the rubber tube

Some use engineering plastics, which have enough rigidity, but it is difficult to guarantee the sealing performance of the joints, so the method of changing the wall thickness has to be adopted, which increases the manufacturing cost

There are also rubber-plastic composite structures, although the sealing and rigidity can be taken into account, but the production process is more cumbersome

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