A sliding frame structure for drawer balance rail

Abstract

A slide frame structure for a drawer balance rail comprises a fixed slide rail and a movable slide rail. A middle slide rail is arranged between the fixed slide rail and the movable slide rail. An upper slide frame and a lower slide frame are arranged at the upper portion and the lower portion of the middle slide rail respectively. The middle slide rail is in sliding fit with the fixed slide rail and the movable slide rail through the upper slide frame and the lower slide frame. At least one of the upper slide frame and the lower slide frame comprises a first assembly and a second assembly, wherein the first assembly and the second assembly are made of plastic, and a prefabricated and matched position is arranged between the first assembly and the second assembly. The first assembly and the second assembly are prefabricated and connected through the prefabricated and matched position and fixed into a whole in an undetached and heating mode. By improving the structure, the slide frame structure has the advantages of being simple and reasonable in structure, excellent in performance, rapid to assemble, low in manufacturing cost, easy to produce, easy to obtain, stable in opening and closing process, smooth, low in noise, long in service life and the like and is high in practicability.

Description

technical field [0001] The invention relates to a sliding frame structure for a balance rail of a drawer. Background technique [0002] Chinese Patent Document No. CN101530264 disclosed a drawer slide rail on September 16, 2009, which includes an outer fixed rail and an outer slide rail that are slidably connected to the inner slide rail through a cage, and rollers are positioned on the inner slide rail. The surfaces of the rollers are in close contact with the outer fixed rail and the outer sliding rail respectively, so as to realize the guided movement of the outer sliding rail and the inner sliding rail and improve the balance of each rail. The rollers are set on the side of the inner sliding rail through the positioning frame. The positioning frame is frame-shaped and fixed on the side of the inner sliding rail. The left and right sides of the inner wall are provided with shaft seats; In the frame, the two ends of the central shaft are respectively supported on the shaf...

AI Technical Summary

Problems solved by technology

It is said that the inner sliding rail, the outer fixed rail and the outer sliding rail of this structure are only connected by the rolling friction of the rollers, so that the inner sliding rail moves along with the outer sliding rail; however, due to the friction coefficient of the two moving rails Inconsistency, resulting in asynchronous movement of the moving rails on both sides, and the rollers are set on the inner sliding rail by punching a convex pin on the inner sliding rail. The manufacturing process of this convex pin is demanding and quite complicated, which is not convenient for factory manufacturing At the same time, when the drawer is opened, the cage will extend out of the outer fixed rail along with the inner and outer sliding rails. When the load of the drawer is too large, the cage is prone to breakage, which will affect the service life.

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