Pump attachment member

An attachment member for mounting a distribution member on a neck of a fluid product reservoir, the distribution member comprising a body forming an attachment flange, the attachment member being produced by plastic moulding in a mould, the attachment member defining a vertical axis and comprising:

• a skirt engaged with the neck,
• an annular plate resting axially on the neck,
• a receiving sleeve in which the attachment flange of the distribution member is fixedly received, this receiving sleeve defining a receiving recess formed by a moulding pin which is forcibly withdrawn on release from the mould, the receiving recess comprising an inwardly projecting annular inlet rib and which thus reduces the opening of the receiving recess, the attachment flange being held in the receiving recess by this annular inlet rib,
• wherein the annular inlet rib comprises retaining segments for engaging with the attachment flange and mould release segments for engaging with the moulding pin on release from the mould;
• and
• wherein the retaining segments and the mould release segments comprise, respectively, retaining faces and cam faces that are rotated inwards from the receiving recess, the cam faces defining a slope with respect to the vertical axis which is greater than that of the retaining faces.