Tube coupling

Abstract

Disclosed is a tube coupling for connecting tubes for conveying a fluid. The invention comprises a coupling body, an end cap, an O-ring seal, a collet and a retainer ring. The coupling body has a through pathway and an end for expanding the diameter of the through pathway. The end cap is connected to the through pathway, and has a tapered bore. The O-ring seal is fitted to the through pathway in order to maintain a hermetic seal between the coupling body and a tube. The collet has a sleeve and a plurality of flexible arms extending from the sleeve. A plurality of heads are formed so as to be able to touch the tapered bore on the outer surface adjacent to the tip of each flexible arm. The retainer ring is fitted so as to be able to move along the through pathway between the O-ring seal and the collet. The retainer ring has an end which is formed such that it touches the tips of the flexible arms and the bore of large diameter housing the heads to ensure that there is no separation between the flexible arms and the bore of small diameter where a tube is inserted.

Description

technical field [0001] The invention relates to a tube coupling for connecting tubes for transferring fluids. Background technique [0002] Tubes, pipes, hoses, etc. are used to transfer various fluids such as water, oil, air, and the like. Pipe couplings are provided to connect pipes at points where fluid flow begins and ends so that fluid can be transferred from one location to another. Additionally, a pipe coupling is provided to connect the pipes at the junction where the fluid diverges in the third location. [0003] Conduit couplings for transferring fluids can be readily found in numerous patent documents such as US Patent Nos. 4,588,214, 4,606,783, 4,645,246, 5,930,969, etc. The pipe coupling disclosed in said patent document comprises a coupling body, a collet and an O-ring seal. A collet is inserted in and connected to the passageway via the open end of the coupling body. The tubing is inserted in the passageway of the coupler body via the collet. An O-ring se...

AI Technical Summary

Problems solved by technology

[0009] However, in the pipe couplings disclosed in U.S. Patent Nos. 7,032,932, 7,354,079, and 7,425,022, the separation and separation of the elastic arms that occurs when the spacer gasket comes into contact with the tip of the collet due to hydraulic pressure has not been addressed. The problem of plastic deformation

Specifically, in the pipe coupling disclosed in U.S. Patent No. 7,425,022, since the head of the collet is held on the slope of the spacer spacer, the separation of the elastic arms and the plastic deformation are increased, making the pipe coupling reliable. greatly reduced sex

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