Self-closing membrane valve

Abstract

The invention relates to a self-closing diaphragm valve (V) with a slit diaphragm ( 1 ) and a dome-like securing part ( 2 ) associated with a mounting region ( 6 ) of the diaphragm ( 1 ), and proposes, for the purpose of achieving a diaphragm valve which can be pre-assembled ready for use, that the securing part ( 2 ) is connected in a positively locking or integral manner to the diaphragm ( 1 ) and is formed in order to be secured in a closure part ( 7 ) by latching or over-engagement on the outer periphery of the circumference.

1 - 36 . (canceled)  
   
   
       37 . Self-closing diaphragm valve (V) with a slit diaphragm ( 1 ) and a dome-like securing part ( 2 ) associated with a mounting region ( 6 ) of the diaphragm ( 1 ), wherein the securing part ( 2 ) is connected in a positively locking or integral manner to the diaphragm ( 1 ) and has a configuration enabling securement in a closure part ( 7 ) by latching or over-engagement on the outer periphery of the circumference.  
   
   
       38 . Self-closing diaphragm valve according to  claim 37 , wherein the diaphragm ( 1 ) rests at least centrally on a plate part ( 34 ).  
   
   
       39 . Self-closing diaphragm valve according to  claim 38 , wherein the plate part ( 34 ) is formed to taper in the direction of the diaphragm ( 1 ).  
   
   
       40 . Self-closing diaphragm valve according to  claim 38 , wherein the plate part ( 34 ) tapers in a step-like manner.  
   
   
       41 . Self-closing diaphragm valve according to  claim 38 , wherein the diaphragm ( 1 ) rests with prestressing on the plate part ( 34 ) or vice versa.  
   
   
       42 . Self-closing diaphragm valve according to  claim 37 , wherein the securing part ( 2 ) is formed as an annular flat part.  
   
   
       43 . Self-closing diaphragm valve according to  claim 37 , wherein the cross-section of the securing part ( 2 ) converges in the direction of its center.  
   
   
       44 . Self-closing diaphragm valve according to  claim 37 , wherein the securing part ( 2 ) has an outer shape which corresponds to a hollow section and on which the diaphragm ( 1 ) rests.  
   
   
       45 . Self-closing diaphragm valve according to  claim 37 , wherein the securing part ( 2 ) does not engage around the diaphragm ( 1 ).  
   
   
       46 . Self-closing diaphragm valve according to  claim 37 , wherein the securing part ( 2 ) engages around the diaphragm ( 1 ).  
   
   
       47 . Self-closing diaphragm valve according to  claim 37 , wherein cross-sectional length of the diaphragm ( 1 ) which does not have the securing part ( 2 ) engaging around it but coincides therewith is greater than the length around which the securing part engages.  
   
   
       48 . Self-closing diaphragm valve according to  claim 37 , wherein the diaphragm ( 1 ) is connected integrally to the securing part ( 2 ) by means of an adhesion promoter ( 10 ).  
   
   
       49 . Self-closing diaphragm valve according to  claim 37 , wherein the diaphragm ( 1 ) is connected to the securing part ( 2 ) by two-component injection molding.  
   
   
       50 . Self-closing diaphragm valve according to  claim 37 , wherein the radius of curvature (R) of the diaphragm ( 1 ) is between the dimension of the diameter (D) and that of the radius, preferably four fifths of the diameter (D).  
   
   
       51 . Self-closing diaphragm valve according to  claim 37 , wherein the diaphragm ( 1 ) is produced separately from the securing part ( 2 ) and, prior to connection to the securing part ( 2 ), is configured with a planar surface.  
   
   
       52 . Closure ( 8 ) which is produced by plastic injection molding and is intended for a dispensing container, including a blow-molded bottle, the closure ( 8 ) having a self-closing diaphragm valve (V) which interacts with a securing part ( 2 ), wherein the diaphragm ( 1 ), which is of dome-like configuration even in a free-span region, is connected in a positively locking or integral manner to the securing part ( 2 ), the securing part ( 2 ) being secured in the closure ( 8 ) by latching.  
   
   
       53 . Closure according to claim  16 , wherein the closure part ( 7 ), which encircles the securing part ( 2 ) on the outside, acts on the diaphragm ( 1 ), at the same time, in the manner of a cutting edge in the region of overlap with the securing part ( 2 ).  
   
   
       54 . Closure according to  claim 52 , wherein the diaphragm ( 1 ) has a deflecting holder ( 27 ) of the closure part ( 7 ), the deflecting holder having apertures ( 29 ), positioned beneath it.  
   
   
       55 . Closure according to  claim 54 , wherein a crosspiece ( 28 ) of the deflecting holder ( 27 ) is assigned to a slit ( 4 ) of the diaphragm ( 1 ) in vertical projection.  
   
   
       56 . Closure according to  claim 54 , wherein the deflecting holder ( 27 ) is positioned at a free distance (y) beneath the diaphragm ( 1 ).  
   
   
       57 . Closure according to  claim 52 , wherein the diaphragm ( 1 ) rests at least centrally on a plate part ( 34 ).  
   
   
       58 . Closure according to  claim 57 , wherein the plate part ( 34 ) is formed to taper in the direction of the diaphragm ( 1 ).  
   
   
       59 . Closure according to  claim 57 , wherein the plate part ( 34 ) tapers in a step-like manner.  
   
   
       60 . Closure according to  claim 57 , wherein the diaphragm ( 1 ) rests with prestressing on the plate part ( 34 ) or vice versa.  
   
   
       61 . Closure according to  claim 52 , wherein the closure ( 8 ) has a closure lid ( 22 ), in that a cup ( 42 ) which is open at the bottom is integrally formed on the closure lid ( 22 ), and in a region of overlap with the diaphragm ( 1 ), and a free end periphery ( 43 ) of the cup ( 42 ), in the closed state, is seated in a sealing manner on the diaphragm ( 1 ), and in that a plate part ( 34 ), which is attached via resilient arms ( 37 ), bears beneath the diaphragm ( 1 ).  
   
   
       62 . Closure according to  claim 61 , wherein a free outer periphery ( 46 ) of the cup ( 42 ) is directly adjacent to an inner wall ( 44 ) of the diaphragm ( 1 ) in the closed state.  
   
   
       63 . Closure according to  claim 62 , wherein the outer periphery ( 46 ) of the cup ( 42 ) bears in a sealing manner against the inner periphery ( 47 ) of the securing part ( 2 ).  
   
   
       64 . Closure according to  claim 62 , wherein the securing part ( 2 ), associated with the outer periphery ( 46 ) of the cup ( 42 ), has a sealing profiling ( 48 ).  
   
   
       65 . Closure according to  claim 62 , wherein the outer periphery ( 46 ) of the cup ( 42 ) has longitudinal ribs ( 71 ) which are seated on the securing part ( 2 ) in the closed position of the closure ( 8 ).  
   
   
       66 . Closure according to  claim 57 , wherein slits ( 4 ) of the diaphragm ( 1 ) project beyond the plate part ( 34 ) in the radially outward direction.  
   
   
       67 . Closure according to  claim 52 , wherein the closure lid ( 22 ) has a latching button ( 51 ) of the closure ( 8 ) passing through it, it being possible for this latching button to be used for tamperproof sealing, and in that the latching button ( 51 ) has a surface which is structured in a rib-like manner.  
   
   
       68 . Closure according to  claim 67 , further comprising vertical ribs ( 52 ).  
   
   
       69 . Process for producing a self-closing diaphragm valve (V) with fitting of a diaphragm ( 1 ) in an annular securing part ( 2 ), the diaphragm ( 1 ) consisting of an elastomer, wherein a securing part ( 2 ) is produced by plastic injection molding, and the elastomer material ( 59 ) is then added in a fluid state to the securing part ( 2 ) accommodated in a mold ( 60 ) and, with the aid of a counter-mold ( 63 ), the elastomer material ( 59 ) is distributed in order to form the diaphragm as desired.  
   
   
       70 . Process according to  claim 69 , wherein the elastomer material ( 59 ), which cures preferably by a crosslinking reaction, is connected in an integral and/or positively locking manner to the securing part ( 2 ), rear-engagement regions ( 57 ) being formed in respect of the positive locking.  
   
   
       71 . Process according to  claim 69 , wherein the elastomer material ( 59 ) is prepared for application by means of an extruder, and, in a following processing step, a slit ( 4 ) is formed in order to provide a dispensing opening.  
   
   
       72 . Process according to  claim 69 , wherein the diaphragm elastomer is a silicone material.  
   
   
       73 . Self-closing diaphragm valve (V) which is accommodated in an annular securing part ( 2 ), produced by plastic injection molding, and has a diaphragm ( 1 ) made of an elastomer material ( 59 ) with a slit ( 4 ) for forming a dispensing opening when acted upon by pressure, wherein the diaphragm ( 1 ), when formed in a manner in which it is free of cut edges on its circumferential periphery ( 58 ), is connected in a positively locking and/or integral manner to the securing part ( 2 ).