Pump triggering and dispensing head
A triggering and dispensing head to be mounted on a pump for a liquid product dispenser provided with an exhaust conduit wherein the head has a body provided with an ejection channel closable by a flap which has a center punch translationally displaceable in the channel and hingeable about a drive billet connected to an axial rod sliding in the exhaust conduit.
1. An actuation and dispensing head intended to equip a pump for a dispenser of liquid products provided with an outlet duct, said head comprising a body which provides an ejection channel capable of being closed off by a valve, characterised in that said valve comprises a sealing needle movable translationally in said channel and articulated on a drive link connected to an axial rod sliding in said outlet duct;
characterised in that said rod is provided with a lateral lug cooperating with a retaining notch provided on an internal wall of the outlet duct.
2. A head according to claim 1 , characterised in that said needle is articulated on said link by means of a deformable connecting band.
3. A head according to claim 1 , characterised in that said link consists of a cam with triangular cross-section articulated by a corner of said cam on a bevelled part of the needle.
4. A head according to claim 1 , characterised in that it moreover comprises a cover topping said body and closing said ejection channel in an upper part of said ejection channel.
5. A head according to claim 4 , characterised in that said cover comprises a lateral aperture delimiting an end of said channel and whereof the internal circumference of the lateral aperture is capable of receiving a sealed pressing of the needle.
6. A head according to claim 1 , characterised in that said channel is provided with deformable upper lips allowing latching of the needle.
7. A head according to claim 1 , characterised in that said rod is coupled to said link via a transmission element that is at least partially deformable.
8. A head according to claim 1 , characterised in that said rod is made in a single piece with the body and the link.
9. A head according to claim 1 , characterised in that said link is extended by a transmission element consisting of a radial tab resting without coupling on an upper end of said rod.
10. A head according to claim 7 , characterised in that said rod is made in a form of an added-on piece and said transmission element comprises a coupling member cooperating by locking with an anchoring member disposed at the upper end of said rod.
11. A head according to claim 1 , characterised in that said rod has a diameter substantially equal to the internal diameter of the outlet duct, delimiting with a wall thereof a longitudinal passage for the products.
12. A head according to claim 2 , characterised in that said link is connected laterally to said body by a hinge.
13. An actuation and dispensing head intended to equip a pump for a dispenser of liquid products provided with an outlet duct, said head comprising a body which provides an ejection channel capable of being closed off by a valve, characterised in that said valve comprises a sealing needle movable translationally in said channel and articulated on a drive link connected laterally to said body by a hinge and connected to an axial rod sliding in said outlet duct.
14. An actuation and dispensing head intended to equip a pump for a dispenser of liquid products provided with an outlet duct, said head comprising a body which provides an ejection channel capable of being closed off by a valve, characterised in that said valve comprises a sealing needle secured laterally by a set of elastic strips whereof free ends of said elastic strips are fixed to the body, and
wherein said needle is movable translationally in said channel and articulated on a drive link connected to an axial rod sliding in said outlet duct.