| CPC F16L 41/06 (2013.01) [F16L 3/1091 (2013.01)] | 6 Claims |
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1. A coupling assembly comprising:
an inflow pipe comprising a branch hole for branching of an introduced fluid;
a branch pipe in communication with the inflow pipe so that the fluid branched off through the branch hole flows; and
a coupler connecting the inflow pipe and the branch pipe,
wherein the coupler includes a body covering a circumference of the branch hole and comprising a guide rib inserted into the branch hole and a gasket disposed between the body and an outer circumferential surface of the inflow pipe, the gasket comprising a base pressed by a pressing surface of the body to prevent leakage of the fluid being branched off,
wherein a degree of pressurization against the gasket by the body increases in a direction away from the branch hole,
wherein the gasket comprises a reinforcement protrusion extending in an axial direction of the branch pipe,
wherein the reinforcement protrusion comprises one or more expansion grooves extending in a circumferential direction of the branch hole and one or more supply passages configured to guide the fluid so that the fluid is introduced into the one or more expansion grooves,
wherein the one or more expansion grooves comprise a first expansion groove provided on a side surface of the reinforcement protrusion and open in a radial direction of the branch pipe, and a second expansion groove provided on an upper surface of the reinforcement protrusion and open in the axial direction of the branch pipe,
wherein the one or more supply passages comprise a first supply passage configured to guide the fluid so that the fluid is primarily introduced into the first expansion groove and a second supply passage configured to guide the fluid so that the fluid is introduced into the second expansion groove after the fluid is introduced into the first expansion groove, and
wherein the first supply passage and the second supply passage are sequentially arranged along the axial direction.
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