Valve coupling

Abstract

The invention relates to a valve coupling ( 1.1 ) having a discharge part ( 2.1 ) and a receiving part which can be coupled to the discharge part and which has a valve function which, in the coupled state, allows the transmission of a fluid or paste-like material from the discharge part to the receiving part. In the decoupled state, the discharge part and the receiving part are closed in a fluid-tight manner. The discharge part has a discharge valve, and the receiving part ( 3.1 ) has a receiving valve. The coupling or decoupling results in an opening or closing of the valves and is carried out by elastic deformation, wherein, in the case of coupling, the valves are opened only when the discharge part is connected to the receiving part in a fluid-tight manner, and in the case of decoupling, the valves are closed before the fluid-tight connection is broken.

1 . A valve coupling with a discharge part and a receiving part which can be coupled to the discharge part with a valve function which, in the coupled state, allows the transmission of a fluid or paste-like material from the discharge part to the receiving part, wherein, in the decoupled state, the discharge part and the receiving part are closed in a fluid-tight manner, characterized in that the discharge part ( 2 . 1 - 2 . 3 ) has a discharge valve ( 101 , 103 , 105 ), and the receiving part ( 3 . 1 - 3 . 3 ) has a receiving valve ( 102 ,  104 ,  106 ), which when coupled or decoupled, results in an opening or closing of the discharge and receiving valves ( 101 - 16 ) carried out by means of elastic deformation, wherein, in the case of coupling, the valves ( 101 - 106 ) are opened only when the discharge part ( 2 . 1 - 2 . 3 ) is connected to the receiving part ( 3 . 1 - 3 . 3 ) in a fluid-tight manner, and in the case of decoupling, the valves ( 101 - 16 ) are closed before the fluid-tight connection is broken. 
   
   
       2 . The valve coupling according to  claim 1  characterized in that the discharge part ( 2 . 1 ) is finger-shaped and hollow, that a round end ( 5 . 1 ) of the discharge part ( 2 . 1 ) is made of an elastic material ( 37 ) and has a valve slit ( 6 . 1 ), that the receiving part ( 3 . 1 ) has an indentation ( 7 ) with a round end ( 5 . 2 ) with a valve slit ( 6 . 2 ) and is made of an elastic material ( 37 ), and that, in the coupled state, an outer surface ( 8 . 1 ) of the round end ( 5 . 1 ) and an inner surface ( 9 ) of the round end ( 5 . 2 ) are joined together in a friction lock or a positive lock. 
   
   
       3 . The valve coupling according to  claim 2  characterized in that the round end ( 5 . 1 ) of the discharge part ( 2 . 1 ) is formed by a hollow finger-shaped one-piece molded component ( 15 ) that comprises a rigid sleeve ( 16 ) below the round end ( 5 . 1 ). 
   
   
       4 . The valve coupling according to any of the previous claims, characterized in that the receiving part ( 3 . 1 ) has in each case two tension ribs ( 19 ,  20 ) on two opposite outer surfaces ( 17 ,  18 ), transverse to the length of the valve slit ( 6 . 2 ). 
   
   
       5 . The valve coupling according to any of the previous claims, characterized in the receiving part ( 3 . 1 ) has a flange ( 21 ), preferably with a molded seal ring  36 . 
   
   
       6 . The valve coupling according to any of the previous claims, characterized in the receiving part ( 3 . 1 ) has a flange ( 21 ) and a support ring ( 22 ). 
   
   
       7 . The valve coupling according to  claim 1 , characterized in the discharge part ( 2 . 2 ) is hollow and finger shaped, that a round end ( 5 . 3 ) of the discharge part ( 2 . 2 ) is made of an elastic material ( 37 ) and has a valve slit ( 6 . 4 ), that the receiving part ( 3 . 2 ) has a concave round end ( 5 . 5 ) with a valve slit ( 6 . 4 ) and is made of an elastic material ( 37 ), that the receiving part ( 3 . 2 ) is formed axially resilient, and that, in the coupled state, an outer surface ( 8 . 2 ) of the round end ( 5 . 3 ) and an outer surface ( 8 . 3 ) of the concave round end ( 5 . 5 ) are joined together in a friction lock or a positive lock. 
   
   
       8 . The valve coupling according to  claim 7  characterized in that the round end ( 5 . 3 ) of the discharge part ( 2 . 2 ) is formed by a hollow finger shaped one-piece molded component ( 23 ) that comprises a rigid sleeve ( 24 ) below the round end ( 5 . 1 ). 
   
   
       9 . The valve coupling according to  claim 7  or  8 , characterized in that the receiving part ( 3 . 2 ) has an axially resilient zone ( 25 ). 
   
   
       10 . The valve coupling according to  claim 9 , characterized in that the axially resilient zone ( 25 ) is formed by means of a rotationally symmetrical constriction ( 26 ). 
   
   
       11 . The valve coupling according to  claim 1 , characterized in that the discharge part ( 2 . 3 ) has a hollow needle ( 10 ) with a round end ( 5 . 4 ), that the hollow needle ( 10 ) has a cross-hole ( 11 ) below the round end ( 5 . 4 ) which is encased in an elastic sleeve ( 12 ), that the receiving part ( 3 . 3 ) has a component ( 13 ) made of an elastic material ( 37 ) and is provided with a slit ( 14 ), and that, in the coupled state, the hollow needle ( 10 ) with the cross-hole ( 11 ) is inserted through the slit ( 14 ), and in this process, the elastic sleeve ( 12 ) is reversibly withdrawn through the component ( 13 ) so that the cross-hole ( 11 ) is released. 
   
   
       12 . The valve coupling according to  claim 11 , characterized in that the elastic sleeve ( 12 ) has a reinforcing ring ( 27 ) on the free end made of a rigid material. 
   
   
       13 . The valve coupling according to  claim 11  or  12 , characterized in that the receiving part ( 3 . 3 ) has a support ring ( 28 ) made of rigid material. 
   
   
       14 . The valve coupling according to  claim 11  through  13 , characterized in that the elastic sleeve ( 12 ) encases the hollow needle ( 10 ) with a clearance ( 29 ). 
   
   
       15 . The valve coupling according to any of  claims 11  through  14 , characterized in that the elastic sleeve ( 12 ) has at least one interior seal ring ( 30 ,  50 ) which, in the uncoupled state, seals the cross-hole from the outside. 
   
   
       16 . An electric razor or electric oral care device, for example an electric toothbrush ( 13 ) with a handle part ( 32 ) and a detachable brush head ( 33 ) which can be attached to it, with a valve coupling ( 1 . 1 ,  1 . 2 ,  1 . 3 ) according to any of the preceding claims.