An assembly consisting of: - a container fitted with a neck, the neck consisting of a dispensing hole, a helical thread, rotating around an axis X, which is provided on the neck and a clamping collar; and - a capping device that includes: - a lower ring axially attached to the neck and movable in rotation on the neck around said axis X, said lower ring consisting of a first section consisting of clamping elements which protrude radially towards the inside of the lower ring and are arranged below the clamping collar to axially retain the lower ring on the neck of the container and a second section, the first section and the second section of the lower ring being articulated with each other so that the second section rotates with respect to the first section between a lowered position in which the second section is arranged below the clamping collar and a raised position in which the second section is arranged at least partially above the clamping collar; - a cap which includes an upper wall and an external peripheral skirt, the external peripheral skirt having a helical thread intended to cooperate with the helical thread of the neck to allow movement of the cap between a closed position and a released position in which the helical thread of the cap is no longer engaged with the helical thread of the neck; - an articulation device consisting of two sheets (11, 12) that connect the external peripheral skirt and the second section and configured to allow the cap to pivot between the released position and a titled open position in which the cap is released from the orifice of the neck; the second section of the lower ring being suitable to be positioned in the lowered position when the cap is in the tilted open position; the capping device additionally comprising a locking device configured to lock the cap when in the tilted open position, said locking device comprising: - a heel which protrudes axially, from the outer peripheral skirt, between the two sheets (11, 12) of the articulation device and which consists of a strip which protrudes radially outwards; and - a protruding portion that protrudes axially from the second section of the lower ring, between the two sheets (11, 12) of the articulation device; the strip and the protruding portion being configured in such a way that, when the cap is in its titled open position and the second section of the lower ring is in the lowered position, the protruding portion is held between the strip and the clamping collar. - a container fitted with a neck, the neck consisting of a dispensing hole, a helical thread, rotating around an axis X, which is provided on the neck and a clamping collar; and - a capping device that includes: - a lower ring axially attached to the neck and movable in rotation on the neck around said axis X, said lower ring consisting of a first section consisting of clamping elements which protrude radially towards the inside of the lower ring and are arranged below the clamping collar to axially retain the lower ring on the neck of the container and a second section, the first section and the second section of the lower ring being articulated with each other so that the second section rotates with respect to the first section between a lowered position in which the second section is arranged below the clamping collar and a raised position in which the second section is arranged at least partially above the clamping collar; - a cap which includes an upper wall and an external peripheral skirt, the external peripheral skirt having a helical thread intended to cooperate with the helical thread of the neck to allow movement of the cap between a closed position and a released position in which the helical thread of the cap is no longer engaged with the helical thread of the neck; - an articulation device consisting of two sheets (11, 12) that connect the external peripheral skirt and the second section and configured to allow the cap to pivot between the released position and a titled open position in which the cap is released from the orifice of the neck; the second section of the lower ring being suitable to be positioned in the lowered position when the cap is in the tilted open position; - a heel which protrudes axially, from the outer peripheral skirt, between the two sheets (11, 12) of the articulation device and which consists of a strip which protrudes radially outwards; and - a protruding portion that protrudes axially from the second section of the lower ring, between the two sheets (11, 12) of the articulation device;