Leakage free pipe fitting of quick connection for reverse osmosis membrane (RO) water treatment unit of household

摘要

A leakage-free pipe fitting of quick connection for Reverse Osmosis Membrane (RO) water treatment unit of household has a pipe fitting, a sealing O-ring, an annular cooperative bushing collar, a cylindrical elastic sleeving collet, an accessory latching clip with a cantilevered lug, and an annular reinforcing bolster with an inner bore. The annular reinforcing bolster is inserted into the cylindrical retainer of the pipe fitting sandwiched between the sealing O-ring and the bottom surface of the cylindrical elastic sleeving collet.

主权项

1. A leakage-free pipe fitting of quick connection for a Reverse Osmosis Membrane (RO) water treatment unit of a household comprises:
a pipe fitting, a sealing O-ring, an annular cooperative bushing collar, a cylindrical elastic sleeving collet, an accessory latching clip with a cantilevered lug, and an annular reinforcing bolster, wherein said pipe fitting, which is a unitarily extruded plastics molded tubular fitting, comprises at least two coupling unions, a hollow water passage, a cylindrical retainer and a cylindrical docking receptacle such that one coupling union encloses the cylindrical retainer therein, the cylindrical docking receptacle runs through the cylindrical retainer in communication with the hollow water passage, and an internal diameter of the cylindrical retainer is greater than an aperture of the cylindrical docking receptacle; wherein said sealing O-ring is made of rubber and is inserted against an inner bottom wall of the cylindrical retainer in the pipe fitting such that an outer diameter of the O-ring is equivalent to or greater than the internal diameter of the cylindrical retainer in the pipe fitting while an internal diameter of the O-Ring is less than an internal diameter of the cylindrical docking receptacle in the pipe fitting; wherein said annular cooperative bushing collar, which is a unitarily extruded piece of plastics molding forming a two-stair tiered hollow cylinder that is partially slid into the one coupling union having the cylindrical retainer of the pipe fitting, includes a top surface, a bottom surface, a jointing circular through-hole running through the top surface and bottom surface, and a guiding conical flare respectively created along rims of the top surface and the bottom surface such that an outer diameter of a top stair rim abutting top surface is greater than an outer diameter of a bottom stair rim abutting bottom surface; wherein said cylindrical elastic sleeving collet, which is a unitarily extruded piece of plastics molding forming a hollow cylinder that is slid into the jointing circular through-hole of the annular cooperative bushing collar, includes a peripheral gorgerin integrating a top surface and a bottom surface with a circular sliding through hole running through therein, an annular cambered locking flange abutting the bottom surface, an annular delimiting flange abutting the top surface, a plurality of longitudinal hooping slits that are circumferentially equivalent-spaced along the bottom surface and extend towards the top surface and in communication with the circular sliding through hole, and a plurality of elastic gripping ribs created between two adjacent longitudinal hooping slits, wherein an outer diameter of the peripheral gorgerin is smaller than an internal diameter of the jointing circular through-hole in the annular cooperative bushing collar, an outer diameter of the annular cambered locking flange is greater than the internal diameter of the jointing circular through-hole in the annular cooperative bushing collar and an outer diameter of the annular delimiting flange is greater than an internal diameter of the annular cambered locking flange; wherein said accessory latching clip, which is a unitarily extruded piece of plastics molding forming a planiform collar that clamps the assembled pipe fitting, includes a U-shaped nick with two prongs of appendix legs encompassing a central cut nick such that a width between the two legs of the U-shaped nick is greater than the outer diameter of the peripheral gorgerin in the cylindrical elastic sleeving collet; wherein said annular reinforcing bolster, which is a unitarily extruded piece of plastics molding forming a cylinder that is inserted into the cylindrical retainer of the pipe fitting in a sandwich position between the sealing O-ring and the bottom surface of the cylindrical elastic sleeving collet, includes an inner bore with an aperture and a circumference with an outer diameter such that the aperture of the inner bore has a diameter equal to a diameter of the aperture of the cylindrical docking receptacle in the pipe fitting while the outer diameter of the circumference equals the internal diameter of the cylindrical retainer in the pipe fitting; and wherein the leakage-free pipe fitting having the annular reinforcing bolster sandwiched between the cylindrical docking receptacle in the pipe fitting and the sealing O-ring is configured in a way such that when a water pipe is inserted into the pipe fitting, the water pipe is closely propped and sleeved in a symmetrical manner so that a bad and uneven sealing effect is not incurred by an asymmetrically non-isometric deformation of the sealing O-ring when the water pipe is bent.