Connecting structure and connecting method for tapered interface and plastic connector of air inlet pipe of air filter

Abstract

The invention relates to a connecting structure and a connecting method for a tapered interface and a plastic connector of an air inlet pipe of an air filter. The connecting structure comprises a tubular plastic connector and the air inlet pipe of the air filter, wherein the plastic connector is fixedly connected into the tapered interface formed in a pipe wall of the air inlet pipe of the air filter and is communicated with the air inlet pipe of the air filter; inner peripheral walls of the tapered interface close to an upper port and a lower port are respectively provided with a circle of inward concave grooves; two circles of outward convex bulges are respectively formed on the periphery of the plastic connector; the plastic connector is located in the tapered interface; and the two circles of outward convex bulges are respectively embedded in the grooves at the upper port and the lower port of the tapered interface. The connecting method comprises the following steps: forming the plastic connector; placing a mould into a glue injector and heating; coating adhesives on the plastic connector; placing the plastic connector into the mould; injecting glue into the mould, vulcanizing and shaping; and taking out a shaped product. The connecting structure provided by the invention has the advantages that the process is simple and convenient to operate, the appearance is good, the working hours are saved, the yield is increased, the materials are saved, the cost is lowered and the quality of the product is increased.

Description

technical field [0001] The invention relates to an air filter intake pipe. In particular, it relates to a connection structure and method for injecting the taper interface of the air filter intake pipe onto the plastic joint at one time and the plastic joint. Background technique [0002] The function of the air filter is to prevent sand and dust from entering the engine intake system, maintain the cylinder, piston and piston ring of the engine, prolong the service life of the engine, and make the engine fuel burn fully, so as to avoid the wear and tear of the engine by dust, thereby ensuring the effective power of the engine. Play and prolong service life, while reducing environmental pollution. [0003] The intake of the air filter is through the intake pipe of the air filter. In order to avoid the noise generated when the air passes through the intake pipe of the air filter and the excessive pressure of the gas in the pipe, it is usually installed on the wall of the inta...

AI Technical Summary

Problems solved by technology

[0011] When the product is installed on the machine, the operation of the machine will generate vibration. After a long period of vibration, the plastic joint is very easy to fall off from the tapered interface 3 of the air filter intake pipe 2, causing the machine to fail and stop running.

Even if the operating strength of the machine is not high, if it is running continuously for a long time, there is a danger of the plastic joint falling off, because the tapered interface 3 of the intake pipe 2 of the air filter is mainly stuck on by the protrusion 4 on the plastic joint 1. The inner wall of the air filter intake pipe 2 is used to ensure its pull-out force. Because the interface size of the intake pipe is small, the protrusion 4 of the plastic joint is relatively small. If the protrusion 4 of the plastic joint is too large, it cannot be inserted. The pull-out force is very small, and the tensile strength of the product is small

In addition, the process is complex, time-consuming, low work efficiency, high cost, difficult to guarantee product quality

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