| 摘要 |
A fluid dispenser member comprising a dispenser wall (23) defining an outside surface (231) and an inside surface (232), said wall (23) having a dispenser orifice (24) passing therethrough, connecting the inside surface to the outside surface, the inside surface (232) forming a sealing slide-cylinder (233) for a piston (3) that is suitable for being displaced, from a rest position, along an axis X in said cylinder and with leaktight contact, so as to open an outlet valve (25, 35), said piston (3) forming a portion of a fluid chamber (20) in which fluid is selectively put under pressure and flows through the open outlet valve towards the dispenser orifice, the piston forming a closure wall (34) that is suitable for closing the dispenser orifice (24) in the rest position, the closure wall (34) being positioned, in the rest position, over the dispenser orifice (24) beside its inside surface (232), the closure wall (34) coming into leaktight contact with the inside surface (232), the dispenser member being characterized in that, at the dispenser orifice (24), the inside surface (232) slopes relative to the displacement axis X of the piston (3), and the closure wall (34) of the piston (3) slopes in a manner that substantially corresponds to the inside surface (232), so as to create a cone-on-cone contact. |
