Drawer pull-out guide

Abstract

A pull-out guide for drawers comprises a carcass rail, a central rail mounted displaceably in relation to the latter, and a pull-out rail mounted displaceably in relation to the central rail. The movement of the central rail is synchronized by a control roller. The control roller with a hard body and a soft body is mounted on a spindle which is elliptical in cross section.

1 . A pull-out guide for drawers, comprising:
 a carcass rail,   a pull-out rail,   a central rail, and   a control roller mounted rotatably about an axis on the central rail and in engagement with the carcass rail and the pull-out rail.   
   
   
       2 . The pull-out guide as claimed in  claim 1 , wherein the control roller comprises a bearing part comprising a hard body and a soft body, and wherein the soft body at least in part projects in a radial direction relative to the hard body. 
   
   
       3 . The pull-out guide as claimed in  claim 2 , wherein the soft body projects over only part of an axial extent of the hard body. 
   
   
       4 . The pull-out guide as claimed in  claim 2 , wherein the soft body is arranged in a region of an axial end side of the control roller. 
   
   
       5 . The pull-out guide as claimed in  claim 1 , wherein the control roller comprises a two-component construction. 
   
   
       6 . The pull-out guide as claimed in  claim 2 , wherein the hard body and the soft body comprise two separate components which are assembled before mounting of the control roller. 
   
   
       7 . The pull-out guide as claimed  claim 2 , wherein the soft body is arranged between a shoulder of the hard body and a bearing plate of the control roller. 
   
   
       8 . The pull-out guide as claimed in  claim 2 , wherein the soft body is fixed between a shoulder of the hard body and a retaining washer. 
   
   
       9 . The pull-out guide as claimed in  claim 1 , wherein the control roller is mounted on a spindle having a cross section that differs from circular by having a relatively larger diameter in a pull-out direction of the pull-out guide. 
   
   
       10 . The pull-out guide as claimed in  claim 9 , wherein the cross section of the spindle is roughly elliptical with a major axis extending in the pull-out direction. 
   
   
       11 . The pull-out guide as claimed in  claim 1 , wherein the control roller is mounted on a spindle and the spindle is mounted on a holding device snap-connected to the central rail. 
   
   
       12 . The pull-out guide as claimed in  claim 1 , wherein the control roller is snapped onto a bearing spindle.