Pipe expanding connection structure of vehicle high-pressure oil pipe

Abstract

The invention relates to a pipe expanding connection structure of a vehicle high-pressure oil pipe. The structure comprises a metal pipe, wherein a rubber hose is sleeved outside the front end of the metal pipe, and a metallic sheath is sleeved outside the rubber hose; the front end of the metal pipe is directly expanded and molded; a circular bulge and a circular check ring are molded in sequence at the position near the end of the metal pipe; the rubber hose is sleeved correspondingly outside the circular bulge of the metal pipe, and the end of the rubber hose closes to the circular check ring of the metal pipe; the metallic sheath is sleeved outside the rubber hose, and the end of the metallic sheath is provided with a circular blocking edge to be pressed on the circular check ring of the metal pipe; and the part of the metallic sheath correspondingly closing to the position between the circular check ring and the circular bulge of the metal pipe is locked in the radial direction to form a contraction part. Compared with the connection structure of the prior art, the combination of the parts such as machining parts and the like can be reduced, and the sealing risk and the production cost are lowered, therefore, the pipe expanding connection structure improves the flexibility, the variety and the reliability of connection, so as to be more applicable to more extensive product forms and higher design requirements.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to an expansion pipe connection structure of an automobile high-pressure oil pipe. Background technique [0002] In China, most of the forming connection structures for small-diameter steel pipes are small-diameter steel pipes and large-diameter forming heads connected by bolts, and the forming heads are machined parts. This process structure has the following disadvantages: 1. The connection head is made by machining and requires bolt connection. Small-diameter steel pipes need to be formed with two bell mouths, which is expensive; 2. The quality control is complicated, and the sealing performance has high requirements for components. Higher, more sealing points; 3, increased production process, higher requirements for operators. Contents of the invention [0003] The purpose of the present invention is to provide an expansion pipe connection structure for high-pressure oil pipes of au...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an expansion pipe connection structure for high-pressure oil pipes of automobiles, which directly expands the front end of the metal pipe, optimizes the structure of the oil pipe joint, improves the safety performance and adaptability of the steering oil pipe system, and ensures the oil pipe connection. On the basis of simple structure and convenient assembly, it also solves the problems of high cost, good sealing performance and stable quality

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