Drawer slide assembly

Abstract

A drawer slide assembly comprises: an outer slide; an intermediate slide; an inner slide having a protruding block mounted on one end thereof; and a sequence control device to enable the outer slide, the intermediate slide, and the inner slide to be pulled out sequentially. The intermediate slide and the inner slide are mounted inside the outer slide and the inner slide is mounted inside the intermediate slide. A guide plate is mounted on the outer slide. A positioning trench having an expansion trench is formed on a top surface of the guide plate. A shrinking opening is formed between the expansion trench and the positioning trench. An elastic restriction means having a pair of oppositely extended stopping means is mounted on the intermediate slide. As a result, the outer slide is prevented from being damaged by heavier weight.

1 . A drawer slide assembly comprising: 
 an outer slide having a guide plate on which a positioning trench having an expansion trench is formed on a top surface thereof;    an intermediate slide on which an elastic restriction means having a pair of oppositely extended stopping means is mounted;    an inner slide having a protruding block extending from one end thereof; and    a sequence control device to enable the outer slide, the intermediate slide, and the inner slide to be pulled out sequentially,    wherein the intermediate slide and the inner slide are mounted inside the outer slide and the inner slide is mounted inside the intermediate slide, and    wherein a shrinking opening is formed between the expansion trench and the positioning trench.    
   
   
       2 . The drawer slide assembly of  claim 1 , wherein the guide plate is a plastic sleeve that fixedly mounts on the outer slide.  
   
   
       3 . The drawer slide assembly of  claim 1 , wherein the guide plate is molded integrally with the outer slide.  
   
   
       4 . The drawer slide assembly of  claim 1 , wherein a plurality of positioning blocks are mounted on the backside of the guide plate and a pair of coupling means is extended downward from one side of the guide plate such that the coupling means can be coupled with the outer slide by coupling the positioning blocks with a plurality of positioning holes of the outer slide so as to fix the guide plate.  
   
   
       5 . The drawer slide assembly of  claim 1 , wherein a plurality of positioning blocks and a pair of hooks are mounted on the bottom of the elastic restriction means for fixing the elastic restriction means on the intermediate slide.  
   
   
       6 . The drawer slide assembly of  claim 1 , wherein a pair of buckling means, a pair of stopping means, a pair of hooks, and a plurality of positioning blocks are integrally formed on the elastic restriction means, two lateral fins are bended upward from both sides of a main body of the elastic restriction means, respectively, and connected to the main body, the buckling means, and the stopping means, wherein the buckling means, which are mounted on the elastic restriction means, are integrally connected to the main body such that the buckling means are driven by the stopping means so as to further drive the main body and the lateral fins when the stopping means are working.  
   
   
       7 . The drawer slide assembly of  claim 6 , wherein the main body, the buckling means, the stopping means are integrally connected with one another and an upper portion of the elastic restriction means is designed to be hollowed out so as to provide with elasticity.  
   
   
       8 . The drawer slide assembly of  claim 1 , wherein a plastic sleeve is mounted to sleeve the protruding block extending from the inner slide.