Fast joint component and unidirectional sealing joint thereof

Abstract

The invention discloses a fast joint component and a unidirectional sealing plug and a socket thereof; the fast joint component comprises a plug-in and adaptive first unidirectional sealing joint and a plug-in and adaptive second unidirectional sealing joint, an active valve core is arranged in a fluid channel of the housing of the first joint in elastic assembly along the shaft direction, a fixedvalve core which is mutually contacted and coordinated with the active valve core along the shaft direction is fixedly assembled in the fluid channel of the housing of the second joint, an active sealing sleeve which is mutually contacted and coordinated with the corresponding end of the first joint housing along the shaft direction is mounted between the fixed valve core and the housing of the second joint in elastic assembly along the shaft direction, and the inner and the outer surfaces of the active sealing sleeve are separately coordinated with the fixed valve core and the correspondingsurface of the housing of the second joint in sealing way to form an unidirectional valve structure. When the two joints of the invention are butt-jointed and moved in a relatively short distance, theopening action can be triggered, which is not easy to be affected by the deformation amplitude of springs; compared with the existing art, the structure that elastic components are mutually contactedis more reliable and sensitive.

Description

technical field [0001] The invention relates to a joint used to realize the rapid on-off of the infusion liquid / air line at the joint. Background technique [0002] Some current quick connectors for infusion / tracheal tubes consist of two interfitting one-way sealing joints to form a joint assembly. When the two joints are butted in use, the intercommunication of the pipelines connected by the two one-way sealing joints can be realized. As disclosed in Chinese patent CN 2593017 "hydraulic two-way quick connector", such as Figure 5 As shown, the quick connector includes left and right valve bodies with built-in one-way spools. When not connected, the one-way spools in the two valve bodies seal the valve body passage in one direction. The cores are pushed back against each other, and the left and right one-way valves are opened to connect the connected pipelines. However, the spools in this joint assembly are all elastic movable parts, and the requirements for the elastic for...

AI Technical Summary

Problems solved by technology

However, the spools in this joint assembly are all elastic movable parts, and the requirements for the elastic force ratio of the springs corresponding to the two spools are relatively high. It may mainly occur on springs with less elasticity, resulting in that the spool corresponding to the spring with greater elasticity cannot retreat or the retreat stroke is very small, so that the intercommunication cannot be completed or the flow is not smooth enough

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