Structure for sliding rail of drawers

Abstract

A structure improvement for sliding rail of drawers with longer life cycle and extendable length, mainly containing an outer sliding rail, an inner sliding rail, and a steelball-sliding sheet placed between the outer sliding rail and the inner sliding rail to guide the inner sliding rail to move freely. A rolling bearing is installed on the embedding end of the sliding rail, inside the inner groove of the outer sliding rail, so as to guide the movement inner sliding rail. With the rolling bearing against the top and the bottom retaining sheets of the inner groove, the steelball-sliding sheet and the rolling bearing provides multi-point support to resists against the moment of force. Shortening the steelball-sliding sheet's length increases extendable length of the inner sliding rail to the extend of full expansion, thus enhance the life cycle and the extendable length of the drawers.

What is claimed is:  
     
         1 . A structure for sliding rail of drawers, containing an outer sliding rail, an inner sliding rail and a steelball-sliding sheet with said steelball-sliding sheet placed between said outer sliding rail and said inner sliding rail guiding said inner sliding rail to move freely, characterized in that: 
 a rolling bearing is installed at an embedding end of said outer sliding rail and inside an inner groove of said outer sliding rail, so as to guide movement of said inner sliding rail; an edge of said rolling bearing leans against a top and a bottom retaining sheets on an inner groove of said inner sliding rail;    said steelball-sliding sheet and said rolling bearing help guiding movement of said inner sliding rail and said rolling bearing enhances resistance against moment of force at one end of said inner sliding rail while forming multi-point support; by shortening length of said steelball-sliding sheet, drawers' life cycle and extendable length are both enhanced.