Motion control device for guide rails of drawers

Abstract

A motion control device ( 1 ) for guide rails of drawers comprising a carcass rail ( 2 ), a drawer rail ( 4 ) and a central rail ( 3 ) arranged between those two rails ( 2, 4 ) at both sides of the drawer, wherein the load of the drawer is transmitted by rollers ( 6, 6′, 15, 15′ ) which are preferably arranged in carriages, characterised in that the motion control device ( 1 ) has a releasable coupling device ( 9 ) between at least one roller ( 6, 6′ ) and the carcass rail ( 2 ).

1 . A motion control device for guide rails of drawers comprising a carcass rail, a drawer rail and a central rail arranged between those two rails at both sides of the drawer, wherein the load of the drawer is transmitted by rollers, characterised in that the motion control device comprises a releasable coupling device between at least one roller and the carcass rail.  
   
   
       2 . A motion control device according to  claim 1 , characterised in that the rollers are arranged in carriages.  
   
   
       3 . A motion control device according to  claim 1  characterised in that upon closure of the drawer rail, the releasable coupling device firstly holds fast the central rail which is fully extended relative to the carcass rail and only releases the central rail as soon as the drawer rail is completely retracted relative to the central rail.  
   
   
       4 . A motion control device according to  claim 1  characterised in that the releasable coupling device comprises in the running surface of the carcass rail a trough or a recess for temporarily receiving at least one roller.  
   
   
       5 . A motion control device according to  claim 4  characterised in that the trough or recess is of such a dimension that precisely one roller is received on a part of its diameter in the trough or in the recess.  
   
   
       6 . A motion control device according to  claim 4  characterised in that the trough or the recess is arranged transversely with respect to the direction of travel of the roller or roller on the carcass rail.  
   
   
       7 . A motion control device according to  claim 4  characterised in that the trough or the recess is arranged in the front end region of the carcass rail.  
   
   
       8 . A motion control device according to  claim 4  characterised in that the roller bears at at least a part of its surface in surface contact against the trough.  
   
   
       9 . A motion control device according to  claim 4  characterised in that the roller bears against the edges of the recess.  
   
   
       10 . A motion control device for guide rails of drawers comprising a carcass rail, a drawer rail and a central rail arranged between those two rails at both sides of the drawer, wherein the load of the drawer is transmitted by rollers, characterised in that the motion control device has a releasable coupling device between at least one roller and the drawer rail.  
   
   
       11 . A motion control device according to  claim 10  characterised in that the rollers are arranged in carriages.  
   
   
       12 . A motion control device according to  claim 10  characterised in that upon opening of the drawer rail the releasable coupling device firstly entrains the central rail and releases the drawer rail only when the central rail is fully extended.  
   
   
       13 . A motion control device according to  claim 10  characterised in that the releasable coupling device comprises a resilient hook which is temporarily latchable into a depression.  
   
   
       14 . A motion control device according to  claim 13  characterised in that the hook is arranged or formed on a carriage displaceable between the central rail and the drawer rail.  
   
   
       15 . A motion control device according to  claim 1  characterised in that the roller or rollers is or are in the form of a cylindrical roller or rollers.  
   
   
       16 . A motion control device according to  claim 1  characterised in that the roller or rollers is or are in the form of a ball or balls.  
   
   
       17 . A motion control device according to  claim 1  characterised in that the roller or rollers is or are formed from an elastically deformable material or has or have a casing comprising an elastically deformable material.  
   
   
       18 . A motion control device according to  claim 1  characterised in that at least one rollers and/or at least one ball can be pressed into the trough or into the recess by a spring-loaded spindle extending transversely with respect to the direction of travel of the roller and/or ball.  
   
   
       19 . A motion control device according to  claim 1  characterised in that at least two rollers are arranged on the carcass rail and/or on the central rail in a displaceable carriage.