Plug-in hose connector device

Abstract

A plug-in line connector ( 1 ) for especially simple and secure assembly has a fluid-tight plug-in connection and a locking device ( 25 ), which is very easy to access when its retaining parts are assembled in the axial direction and which is locked so that it cannot be released by passing a locking point. A tension spring, which is formed as a ring and acts as a block, is used for the locking element. This guarantees particularly low activation forces and minimizes axial play.

1 . Plug-in line connector ( 1 ) with a first connector part ( 14 ) and with a second connector part ( 16 ), which define a continuous line channel ( 24 ) when the connector parts ( 14 , 16 ) are assembled, and with a retaining device ( 25 ), which is used to hold the connector parts ( 14 , 15  [sic;  16 ]) in the assembled state, wherein the retaining device ( 25 ) is formed as a locking device and has a tension spring element ( 33 ) formed as a closed ring as the locking element.  
     
     
         2 . Plug-in line connector according to  claim 1 , characterized in that a first retaining part ( 26 ), which is connected to one of the connector parts ( 16 ), and a second retaining part ( 27 ), which is connected to the other connector part ( 14 ), belong to the retaining device ( 25 ), and the first retaining part ( 26 ) has an opening ( 31 ), in which the tension spring element ( 33 ) is held so that it can move in the radial direction and so that it essentially cannot move in the axial direction, and the second retaining part ( 27 ) has a projection ( 27 ) that can be inserted into the opening ( 31 ) or is formed by this projection and an annular locking shoulder ( 45 ) is formed on this projection.  
     
     
         3 . Plug-in line connector according to  claim 1 , characterized in that the tension spring element ( 33 ) is held in the locked state between two contact surfaces ( 45 , 34 ), which enclose an acute angle (α) that opens outwardly between each other.  
     
     
         4 . Plug-in line connector according to  claim 1 , characterized in that the tension spring element ( 33 ) is formed as a toroid with a circular cross section.  
     
     
         5 . Plug-in line connector according to  claim 1 , characterized in that the tension spring element ( 33 ) is flexible so that it can perform a rolling motion about its cord center axis (S).  
     
     
         6 . Plug-in line connector according to  claim 1 , characterized in that the tension spring element ( 33 ) is a spiral spring, whose ends ( 33   a , 33   b ) are connected to each other.  
     
     
         7 . Plug-in line connector according to  claim 2 , characterized in that the second retaining part ( 27 ) has a conical insertion section ( 46 ), which directly contacts to the locking shoulder ( 45 ).  
     
     
         8 . Plug-in line connector according to  claim 1 , characterized in that the line channel ( 24 ) is a fluid channel and for sealing the connector parts ( 14 , 16 ) connected to each other from the outside in the assembled state, there is a sealing device ( 23 ) that can move in the axial direction.  
     
     
         9 . Plug-in line connector according to  claim 1 , characterized in that the connector parts ( 14 , 16 ) are arranged coaxial to each other and the retaining device ( 25 ) is arranged at a lateral distance to the connector parts ( 14 , 16 ).  
     
     
         10 . Plug-in line connector according to  claim 1 , characterized in that the connection device ( 25 ) permits lateral movements in the locked state.