Connecting part for applicators

Abstract

The invention relates to a connecting arrangement for applicators, particularly for applicators which are used for applying liquid or pasty media, comprising a connecting part ( 1 ) and a sleeve-shaped holding portion ( 4 ), said connecting part ( 1 ) being equipped with a head and a stem ( 3 ) which is arranged on said head ( 2 ), said stem being formed along a stem axis ( 7 ) and having a free end, and said holding portion ( 4 ) being intended to receive said stem, said stem ( 3 ) and said holding portion ( 4 ) comprising at least one locking element ( 10, 11 ), respectively, which locking elements cooperate for the purpose of obtaining a connection when said stem ( 3 ) is inserted into said holding portion ( 4 ) in order to make it difficult to pull out said stem ( 3 ) from said holding portion ( 4 ).

1 . A connecting arrangement for applicators, particularly for applicators which are used for applying liquid or pasty media, comprising a connecting part ( 1 ) and a sleeve-shaped holding portion ( 4 ), 
 a) said connecting part ( 1 ) being equipped with a head and a stem ( 3 ) which is arranged on said head ( 2 ), said stem being formed along a stem axis ( 7 ) and having a free end, and    b) said holding portion ( 4 ) being intended to receive said stem, characterized in that    c) said stem ( 3 ) and said holding portion ( 4 ) comprise at least one locking element ( 10 ,  11 ), respectively, which locking elements cooperate for the purpose of obtaining a connection when said stem ( 3 ) is inserted into said holding portion ( 4 ) in order to make it difficult to pull out said stem ( 3 ) from said holding portion ( 4 ).    
   
   
       2 . A connecting arrangement according to  claim 1 , characterized in that the inner side of said holding portion ( 4 ) and/or the outer side of said stem ( 3 ) comprises several locking elements ( 10 ,  11 ) which are uniformly distributed over the periphery and/or are arranged one behind the other in the longitudinal direction.  
   
   
       3 . A connecting arrangement according to one of the preceding claims, characterized in that elevations and impressions which have wedge-shaped, partially circular, knob-shaped, triangular, polygonal or irregular cross-sections are provided as a locking element ( 10 ) on the stem ( 3 ) and/or a locking element ( 11 ) in the receiving portion ( 4 ).  
   
   
       4 . A connecting arrangement according to one of the preceding claims, characterized in that, as a locking element ( 10 ) on the stem ( 3 ) and/or a locking element ( 11 ) in the receiving portion ( 4 ), peripherally extending impressions or elevations are provided as 
 a) convolutions,    b) parallel, axially spaced grooves or    c) portions with a larger or smaller cross-section which extend in the form of waves    of the stem ( 3 ) or the receiving portion ( 4 ).    
   
   
       5 . A connecting arrangement according to one of the preceding claims, characterized in that said at least one locking element ( 10 ) of said stem ( 3 ) is configured to be complementary to the at least one locking element ( 11 ) in the receiving portion ( 4 ) in such a way that the respective cross-sections of the locking elements supplement each other to a large extent or even completely.  
   
   
       6 . A connecting arrangement according to one of the preceding claims, characterized in that at least one locking element ( 10 ,  11 ) comprises an insertion slope so as to facilitate the action of inserting the stem ( 3 ) and so that a locking element ( 10 ,  11 ) can engage behind it after the stem ( 3 ) has been inserted.  
   
   
       7 . A connecting part ( 1 ) for applicators, particularly according to one of the preceding claims, said connecting part ( 1 ) being equipped with a head and a stem ( 3 ) which is arranged on said head ( 2 ), said stem being formed along a stem axis ( 7 ) and having a free end, and said stem ( 3 ) being intended to be received in a sleeve-shaped holding portion ( 4 ), characterized in that said stem ( 3 ) has the shape of a peg at least along a section of the stem, which peg comprises impressions ( 5 ) at regular distances in the radial direction along the axis ( 7 ) of said stem.  
   
   
       8 . A connecting part according to the preceding claim, characterized in that the cross-section of said peg has the shape of 
 a) a regular or irregular polygon    b) an ellipse    c) a U or a Z or    d) a star having at least two ridges which extend outwardly from a center.    
   
   
       9 . A connecting part according to one of  claims 7  to  8 , characterized in that said impressions ( 5 ) are the troughs of an imaginary wave directed in parallel to said axis ( 7 ) and extending peripherally about said axis.  
   
   
       10 . A connecting part according to  claim 9 , characterized in that said wave profile is formed by at least two successive impressions ( 5 ) and elevations ( 6 ).  
   
   
       11 . A connecting part according to one of  claims 7  to  10 , characterized in that said free end of said stem ( 3 ) rests in an impression ( 5 ).  
   
   
       12 . A connecting part according to one of  claims 7  to  11 , characterized in that the axial distance of the regular impressions is 1 mm.  
   
   
       13 . A connecting part according to one of  claims 7  to  12 , characterized in that the ratio between the maximum outer diameter and the minimum outer diameter of said stem ( 3 ) in the area of said peg is chosen to be 3:2.  
   
   
       14 . A connecting part according to one of  claims 7  to  13 , characterized in that it is made of plastics.  
   
   
       15 . A connecting part ( 1 ) and a sleeve-shaped holding portion ( 4 ) for a connecting part according to one of the preceding claims, characterized in that said holding portion ( 4 ) 
 a) can be deformed permanently after the stem has been inserted by exerting radial external forces onto the holding portion in such a way that the stem ( 3 ) present inside can be fixedly connected with said holding portion ( 4 ), or    b) that said holding portion comprises, on its inner wall, at least one projection ( 9 ) extending radially inwardly or outwardly, which cooperates with at least one radial impression or elevation ( 5 ) of said stem ( 3 ) inserted so as to prevent a relative movement of the holding portion ( 4 ) and the stem ( 3 ).