Pipeline device for car air conditioning system

Abstract

The invention provides a pipeline device for a car air conditioning system. The pipeline device comprises a metal pipe, a rubber pipe and a metal pressing sleeve; the metal pipe comprises a metal pipe body and an extension part connected with the metal pipe body, the extension part extends in the axial direction of the metal pipe body, the intersection of the metal pipe body and the extension part forms a step surface, and the outer diameter of the extension part is smaller than that of the metal pipe body; the rubber pipe wraps the outer circumferential surface of the extension part; the inner circumferential surface of the metal pressing sleeve is pressed on the outer circumferential surface of the rubber pipe, one open end of the metal pressing sleeve is provided with a bent part which is bent towards the extension part, the first surface of the bent part is attached to the outer circumferential surface of the extension part, a sealing groove is formed in the outer circumferential surface of the extension part, a sealing ring is arranged in the sealing groove, and the sealing ring is used for making the metal pipe and the rubber pipe sealed in the radial direction.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a pipeline device for an auto air-conditioning system. Background technique [0002] At present, the flexible connection method of automobile air-conditioning pipelines usually adopts crimping connection between rubber tubes and metal tubes, and the sealing method generally uses sealant on the surface of metal tubes or rubber tubes with sealing layers for sealing. see Figure 1A to Figure 1C As shown, the rubber tube 120 is sleeved on the metal tube 110, that is, the inner peripheral surface of the rubber tube 120 covers the outer peripheral surface of the metal tube 110, and a metal buckle sleeve is provided on the outer peripheral surface of the rubber tube 120. 130, so that the connection between the rubber tube 120 and the metal tube 110 is tighter. The crimping and fixing process used in the industry often adopts the limit groove 111 for fixing, and the limit groove 111 ...

AI Technical Summary

Problems solved by technology

Furthermore, the present invention can effectively avoid the problems of traditional smearing process, such as high requirements, difficult operation, environmental protection hazards and easy damage, thereby further improving production efficiency

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