Patent ID: 8292382
Filing Date: 2012-10-23
Classification: H05K

Abstract:
1. A rail set assembly having two parallel rails installed on a frame and a drawable machine casing; each rail comprising: a retainer having a bending portion bending from a body thereof so that the retainer is fixed to a frame by the bending portion thereof and thus to provide a supporting force to the rail; a central portion of the retainer having a locking hole; an engaging unit having a plurality of through holes and a penetrating hole, a first locking stud passing through one of the through holes of the engaging unit and the locking hole of the retainer so as to retain the engaging unit to the retainer in different positions; a sliding track, having a front fixing unit and a long slot whose length is longer than a half of length of the sliding track, and the sliding track being slidable along the engaging unit; an embedding unit, being a rectangular plate, having a passing hole and a guide block longitudinally protrudent from a side of the embedding unit, wherein the guide block will be engaged into the long slot so as to provide the sliding track to slide steadily and a positioning function as it moves forwards; and wherein the engaging unit is engaged to the retainer; a second locking stud passes through the passing hole of the embedding unit and the penetrating hole of the engaging unit so that the embedding unit is locked to the engaging unit; and thus the sliding track is slidable along the engaging unit and the embedding unit; and wherein the embedding unit further has a positioning block on the same side the guide block is formed and with a convex cambered surface; and the positioning block provides a positioning function in forward and backward movements.