Closure cap

Closure cap intended to close off an open end of a reservoir, comprising a substantially cylindrical body of longitudinal axis that is intended to be mounted on the open end of the reservoir and is provided with at least one flow orifice, and a lid that is articulated about a transverse pivot axis with respect to the body, by means of at least two hinges, between an open position of the flow orifice and a closed position of said orifice, said lid having an outside diameter greater than the outside diameter of the body and forming a radial lip, said closure cap also comprising a return member that is disposed in a plane passing between the two hinges and is able to keep the lid in each of the open and closed positions,

• wherein the return member has a bent shape configured to be inserted into cavities made in the body and in the lid, respectively, and to be flush with the radial lip of the lid in the closed position, said return member comprising:
• a first articulation part that is deformable about a first transverse articulation axis and is connected to the periphery of the body, a second articulation part that is deformable about a second transverse articulation axis and is connected to the outer surface of the lid, and at least two legs that extend between the articulation parts and are at an angle to one another, the return member having a flexion axis between said legs.