Patent ID: 8079653

Claim:
A sliding track assembly, comprising: an inner slide rail unit, said inner slide rail unit comprising a mounting plate, an inner slide rail perpendicularly extended from an inner side of said mounting plate, said inner slide rail having a circulating guide groove, a slide block supported on and movable along said inner slide rail, said slide block having a locating hole, and a positioning block set between said slide block and said inner slide rail and repeatedly pressable to position in a predetermined position in said circulating guide groove and to slide in said circulating guide groove, said positioning block having a guide rod protruded from one side thereof and coupled to said circulating guide groove of said inner slide rail and a positioning rod protruded from an opposite side thereof and inserted through said locating hole of said slide block; and an intermediate slide rail unit supported on one end of said slide block opposite to said mounting plate, said intermediate slide rail unit comprising a first intermediate slide rail member movable by said slide block, a second intermediate slide rail member mounted in said first intermediate slide rail member and a locating plate mounted in said second intermediate slide rail member adjacent to said slide block, said locating plate having a transverse groove for receiving said positioning rod of said positioning block to hold said positioning block in position; wherein said circulating guide groove has a longitudinal sliding groove portion extending longitudinally in a direction reversed to said mounting plate and a first sliding groove portion and a second sliding groove portion respectively extending from one end of said longitudinal sliding groove portion in a direction towards said mounting plate and then merged into each other; said inner slide rail further having a locating block protruding from one side thereof and surrounded by said first sliding groove portion and said second sliding groove portion, said locating block having a recessed portion facing said mounting plate, and a first guide face and a second guide face respectively disposed in said first sliding groove portion and said second sliding groove portion adjacent to the merged area between said first sliding groove portion and said second sliding groove portion.