Locating and forced pullout device of a guide rail in a drawer

Abstract

A locating and forced pullout device of a guide rail in a drawer comprises an inner rail, an intermediate rail and an outer rail. The inner rail provides an elongated groove at the rear side thereof and a stop part is disposed in the groove. The stop part has an upward slant toward an end thereof and is joined to the inner groove vertically. The intermediate rail is sliding relative to the inner rail and provides an elastic frame at the rear side thereof with a central frame hole. Also, the elastic frame has a respective upright rim at two opposite lateral sides. The elastic frame can catch the stop part to form a state of locating as soon as the drawer is pushed back and the engaging edge presses the elastic frame. The elastic frame separates from the engaging edge and bounces back to allow the stop part separating from the elastic frame as soon as the drawer is pulled out.

What is claimed is:  
     
         1 . A locating and forced pullout device of a guide rail in a drawer, comprising 
 an inner rail with a rear side, providing an elongated groove at the rear side and a stop part being disposed in the groove, the stop part having an upward slant toward an end thereof and being joined to the inner groove vertically;    an intermediate rail, being sliding relative to the inner rail, providing an elastic frame at a rear side thereof with a central frame hole, having a respective upright rim at two opposite lateral sides thereof with two arched chamfer ends on the respective upright rim, and the frame hole having a size not less than the stop part; and    an outer rail, being sliding with respect to the intermediate rail, providing a downward engaging edge at a rear end thereof;    whereby, the elastic frame can catch the stop part to form a state of locating as soon as the drawer is pushed back and the engaging edge presses the elastic frame; the elastic frame separates from the engaging edge and bounces back to allow the stop part separating from the elastic frame as soon as the drawer is pulled out.    
     
     
         2 . The locating and forced pullout device of a guide rail in a drawer according to  claim 1 , wherein the inner rail, the intermediate rail and outer rail are made of metal.