US 12,297,933 B2
Connector for piping
Yuk Nam Choi, Bucheon-si (KR)
Assigned to SNC CORPORATION CO., LTD., Incheon (KR)
Appl. No. 18/277,465
Filed by SNC CORPORATION CO., LTD., Incheon (KR)
PCT Filed Feb. 18, 2022, PCT No. PCT/KR2022/002401
§ 371(c)(1), (2) Date Aug. 16, 2023,
PCT Pub. No. WO2022/177338, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 10-2021-0021531 (KR), filed on Feb. 18, 2021.
Prior Publication US 2024/0044427 A1, Feb. 8, 2024
Int. Cl. F16L 19/00 (2006.01); F16L 19/06 (2006.01)
CPC F16L 19/005 (2013.01) [F16L 19/061 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A connector for piping comprising:
a body having a tubular shape and having an inlet and an outlet defined therein;
a cap nut having one end screwed to an outer circumferential surface of the inlet or the outlet of the body;
a collet fitted into an inner circumferential surface of the cap nut through an opening of another end of the cap nut, wherein the collet presses and fixes an outer circumferential surface of a connection target pipe inserted into an inner receiving hole of the collect collet when the cap nut is screwed to the body; and
an anti-loosening mechanism including:
stopped protrusions formed on an inner circumferential surface of one end of the cap nut;
a stopper protrusion formed on an outer circumferential surface of the body, wherein the stopped protrusion is engaged with the stopper protrusion to prevent the cap nut screwed, at a predetermined position, to the body from being loosened therefrom under an external force; and
stopper ribs formed on the outer circumferential surface of the body and spaced from each other by a predetermined angular spacing, wherein the stopped protrusion is engaged with the stopper ribs to prevent the cap nut coupled to the body from being loosened or locked under an external force,
wherein the body includes an anti-loosening ring which is provided as a separate structure and received in a groove of the body, and the stopper protrusion and the stopper ribs are formed on an outer circumferential surface of the anti-loosening ring and are integrally formed with the anti-loosening ring such that the stopper protrusion and the stopper ribs are received in the groove of the body.