US 11,873,934 B2
Quick coupling and connection assembly comprising such a quick coupling
Christophe Durieux, Gilly sur Isere (FR); and Serafim Marques Barroca, Albertville (FR)
Assigned to STAUBLI FAVERGES, Faverges-Seythenex (FR)
Filed by STAUBLI FAVERGES, Faverges-Seythenex (FR)
Filed on Oct. 13, 2022, as Appl. No. 17/965,741.
Claims priority of application No. 2110833 (FR), filed on Oct. 13, 2021.
Prior Publication US 2023/0250909 A1, Aug. 10, 2023
Int. Cl. F16L 37/34 (2006.01); F16L 37/098 (2006.01); F16L 37/35 (2006.01)
CPC F16L 37/34 (2013.01) [F16L 37/098 (2013.01); F16L 37/35 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A quick coupling for a detachable connection of two pipes through which a pressurised fluid flows,
the quick coupling comprising a male element and a female element capable of fitting together along an insertion axis, between an uncoupled configuration and a coupled configuration of the quick coupling,
the male element comprising
a male tubular body which extends along a first longitudinal axis between a proximal end and a distal end and which has
a first longitudinal cavity for passage of pressurised fluid in the coupled configuration of the quick coupling,
a first edge plane formed on an outside of the distal end of the male tubular body and perpendicular to the first longitudinal axis;
a first distal mouth defined by the distal end of the male tubular body and having a diameter smaller than a diameter of the first longitudinal cavity;
a shutter that is movable along the first longitudinal axis between an advanced position, where it closes the first distal mouth, and a retracted position, where it does not close the first distal mouth;
a first seal;
the female element comprising
a female tubular body which extends along a second longitudinal axis between a proximal end and a distal end and which comprises
a second longitudinal cavity for the passage of pressurised fluid in the coupled configuration of the quick coupling,
a second distal mouth, a diameter of which is smaller than a diameter of the second longitudinal cavity;
a plunger capable of pushing the movable shutter from its advanced position to its retracted position along the first longitudinal axis;
a spool
mounted around the plunger,
movable along the second longitudinal axis between an advanced position, where it closes the second distal mouth, and a retracted position, where it does not close the second distal mouth, and
which has a second edge plane, formed on an outside of a distal end of the spool and perpendicular to the second longitudinal axis;
a second seal which is partially housed in a groove in the spool and which rests on a wall of the plunger when the spool is in the advanced position,
wherein
the first seal is partially housed in a groove in the male tubular body and rests on a cylindrical surface of the movable shutter, in a direction radial to the first longitudinal axis, when this movable shutter is in the advanced position;
when the spool is in the advanced position, the second seal rests on a cylindrical wall of the plunger in a direction radial to the second longitudinal axis;
the first seal comprises a first front surface which is more advanced than the first edge plane along the first longitudinal axis;
the second seal comprises a second front surface which is more advanced than the second edge plane along the second longitudinal axis; and
the first and second front surfaces of the first and second seals are adapted to contact each other when the male and female elements of the quick coupling are fitted together.