POMPE DE DISTRIBUTION ET PROCÉDÉ POUR FAIRE FONCTIONNER UNE TELLE POMPE

摘要

It is provided a dispenser pump (10) for pumping a fluid from a reservoir to a dispenser head, comprising a dip tube (12) for being inserted into the fluid located inside the reservoir, a cylinder housing (14) connected with the dip tube (12), a piston pipe (18) guided in longitudinal direction by the cylinder housing (14) for pumping the fluid from the dip tube (12) via the cylinder housing (14) to the dispenser head, wherein the piston pipe (18) comprises a connecting area (20) for connecting the dispenser head to the piston pipe (18), a top part (24) connected with the piston pipe (18), a bottom part (26) connected with the cylinder housing (14) and a spring bellow (28) for pushing the piston pipe (18) in a direction outwards the cylinder housing (14), wherein a lower axial end of the spring bellow (28) is connected with the bottom part (26) via a lower retainer ring (30) located inside the spring bellow (28) and/or a higher axial end of the spring bellow (28) is connected with the top part (24) via a higher retainer ring located inside the spring bellow (28). The retainer ring (30) enables a fast, easy and secure connection of the spring bellow (28) at low mounting costs and without the need of further connection means so that a cost efficient manufacturing of a dispenser with a high life time is enabled which may be particularly used for applying cosmetic products like hair care products.