Valve and dispensing device comprising one such valve

Abstract

A fluid dispenser valve comprising a valve body ( 10 ) and a valve member ( 20 ) that is slidable in said valve body ( 10 ) between a rest position and a dispensing position, said valve member ( 20 ) including a dispenser orifice ( 25 ), said valve including an axial guide element ( 15 ) that co-operates with a guided portion ( 29 ) of the valve member ( 20 ), said guided portion ( 29 ) being remote from said dispenser orifice ( 25 ).

1 . A fluid dispenser valve comprising a valve body ( 10 ) and a valve member ( 20 ) that is slidable in said valve body ( 10 ) between a rest position and a dispensing position, said valve member ( 20 ) including a dispenser orifice ( 25 ), said valve being characterized in that it includes an axial guide element ( 15 ) that co-operates with a guided portion ( 29 ) of the valve member ( 20 ), said guided portion ( 29 ) being remote from said dispenser orifice ( 25 ), and in that said valve member ( 20 ) comprises a top portion ( 21 ) including the dispenser orifice ( 25 ), and a bottom portion ( 22 ) including said guided portion ( 29 ), said top and bottom portions ( 21 , 22 ) being assembled one in the other.  
   
   
       2 . A valve according to  claim 1 , in which said guide element ( 15 ) is secured to said valve body ( 10 ), in particular by being made integrally therewith.  
   
   
       3 . A valve according to  claim 1 , in which said guide element ( 15 ) is a hollow sleeve having an inside diameter that is approximately equal to the outside diameter of the guided portion ( 29 ) of the valve member that is slidable in said hollow sleeve.  
   
   
       4 . A valve according to  claim 3 , in which said hollow sleeve ( 15 ) has a blind hollow.  
   
   
       5 . A valve according to  claim 3 , in which said hollow sleeve ( 15 ) has a through hollow.  
   
   
       6 . A valve according to  claim 1 , in which said valve is a metering valve including a metering chamber ( 30 ), said valve member ( 20 ) including a dispenser channel ( 24 ) connecting the metering chamber ( 30 ) to said dispenser orifice ( 25 ) when the valve member ( 20 ) is in its dispensing position, and a filler channel ( 26 ) for filling said metering chamber ( 30 ) when the valve member ( 20 ) returns to its rest position.  
   
   
       7 . A valve according to  claim 6 , in which said top and bottom portions are assembled one in the other so as to define said filler channel ( 26 ).  
   
   
       8 . A valve according to  claim 7 , in which the bottom portion ( 22 ) of the valve member ( 20 ) includes a blind hole ( 23 ) including two lateral through orifices ( 27 ,  28 ), with one orifice opening out into the metering chamber ( 30 ) when the valve member is in its rest position ( 20 ), the top portion ( 21 ) of the valve member ( 20 ) being fitted in said blind hole ( 23 ) so as to close said blind hole ( 23 ) axially.  
   
   
       9 . A valve according to  claim 8 , in which the blind hole ( 23 ) of the bottom portion ( 22 ) of the valve member ( 20 ) forms a central axial channel ( 23 ) that is connected to said two lateral orifices ( 27 ,  28 ), thereby forming said filler channel ( 26 ), the bottom end of said top portion ( 21 ) of the valve member ( 20 ) axially defining said central channel ( 23 ).  
   
   
       10 . A valve according to  claim 9 , in which said central channel ( 23 ) has a cross-section that is polygonal, and in particular triangular.  
   
   
       11 . A valve according to  claim 8 , in which the top portion ( 21 ) of the valve member includes a groove ( 23 ′) that extends axially and that co-operates with said blind hole ( 23 ) of said bottom portion of the valve member ( 20 ) to define at least one portion of the filler channel ( 26 ).  
   
   
       12 . A valve according to  claim 8 , in which at least one of said lateral orifices ( 27 ,  28 ) is conical in part, tapering towards the blind hole ( 23 ).  
   
   
       13 . A valve according to  claim 12 , in which the minimum diameter of said at least one conical orifice ( 27 ,  28 ) is about 0.3 mm.  
   
   
       14 . A fluid dispenser device, characterized in that it includes a valve according to  claim 1.