Fastener device for fastening a pump or a valve onto a receptacle neck and a fluid dispenser including such a fastener device

1. A fastener device for fastening a dispenser member ( 4 ) onto a receptacle neck ( 31 ), the device comprising:

a fastener ring ( 1 ) including both abutment means ( 13 ; 141 , 142 , 143 ) and fastener means ( 12 ) for fastening onto the receptacle neck; and

a covering hoop ( 2 ) that is engaged axially from top to bottom around the ring ( 1 ), the hoop including hook means ( 25 ) co-operating with the abutment means for acting together to define axial retainer means for axially blocking the hoop on the ring;

wherein the retainer means include a plurality of mutual engagement elements ( 251 , 252 , 253 , 254 ; 13 ; 25 , 141 , 142 , 143 ) defining distinct axial engagement positions for engaging the hoop on the ring; and

the hoop includes a top end and a bottom end for coming to bear on the receptacle, the hook means being formed by an upwardly-directed inner shoulder that is defined in the proximity of the bottom end.

2. A fastener device according to claim 1 , in which the inner shoulder ( 25 ) is formed by the hoop being upturned inwards at its bottom end.

3. A fastener device according to claim 1 , in which the abutment means include at least one downwardly-directed abutment zone.

4. A fastener device according to claim 3 , in which a plurality of abutment zones ( 141 , 142 , 143 ) are provided, disposed in various axial positions, the various abutment zones defining engagement elements.

5. A fastener device according to claim 4 , in which the fastener ring includes a substantially cylindrical skirt ( 11 ) that is engaged around the neck ( 31 ), the skirt defining an outer wall including a plurality of axially-offset abutment zones ( 141 , 142 , 143 ).

6. A fastener device according to claim 5 , in which the abutment zones are formed by the downwardly-directed bottom ends ( 141 , 142 , 143 ) of longitudinal axial splines ( 14 ) which extend vertically while projecting radially from the outer wall of the skirt, the bottom ends of the splines being situated in axially-offset positions.

7. A fastener device according to claim 1 , in which the shoulder ( 25 ) of the hoop ( 2 ) presents a crenellated profile defining axially-offset engagement elements.

8. A fastener device according to claim 7 , in which the crenellated profile defines crenellations ( 251 , 252 , 253 , 254 ) of various heights or depths.

9. A fastener device according to claim 1 , in which the ring includes a projecting pre-assembly collar ( 16 ) with which the hook means ( 25 ) of the hoop become engaged in the pre-assembled position.

10. A fluid dispenser comprising a receptacle, a dispenser member and a fastener device according to claim 1 .

11. The fastener device according to claim 1 , wherein the dispenser is a pump or a valve.

12. A fastener device for fastening a dispenser member onto a receptacle neck, the device comprising:

a fastener ring defining a center axis and comprising a radially inwardly extending protrusion configured to engage below a rim of the receptacle neck and one or more first abutment faces; and

a covering hoop that covers and engages around at least an outside portion of the ring, the hoop comprising a radially inwardly protruding hook with one or more second abutment faces that abut with the one or more first abutment faces so as to form a plurality of abutments that axially retain the hoop on the ring and prevent the hoop from being axially removed from the ring; and

wherein the abutments include at least two abutments that are located at different axial distances from a bottom distal end of the hoop; and

wherein each of the one or more second abutment faces is an upwardly-directed inner shoulder formed by the hoop being upturned inwards at the bottom distal end of the hoop.

13. The fastener according to claim 12 , wherein each of the one or more first abutment faces is a downwardly-directed face extending from the ring radially outwardly.

14. A fastener device for fastening a dispenser member ( 4 ) onto a receptacle neck ( 31 ), the device comprising:

a fastener ring including both abutment means and fastener means for fastening onto the receptacle neck; and

a covering hoop that is engaged axially from top to bottom around the ring, the hoop including hook means co-operating with the abutment means for acting together to define axial retainer means for retaining the hoop on the ring;

wherein the retainer means include a plurality of mutual engagement elements defining distinct axial engagement positions for engaging the hoop on the ring; and

wherein the hoop includes a top end, and a bottom end for coming to bear on the receptacle, the hook means being formed by an upwardly-directed inner shoulder that is defined in the proximity of the bottom end.

15. The fastener device according to claim 14 , wherein the inner shoulder is formed by the hoop being upturned inwards at its bottom end.