Patent ID: 6224177
Filing Date: 2001-05-01
Classification: A47B

Abstract:
A sliding track assembly comprising:an outer rail fixedly fastened to the inside wall of a first device;a positioning mechanism installed in a rear side of said outer rail;an inner rail fixedly fastened to a second device and moved with said second device in and out of said outer rail, said inner rail comprising a rear extension bar, said rear extension bar comprising a retaining notch at one side, and a locating flange disposed at one side of said retaining notch and adapted for engaging said positioning mechanism to stop said inner rail from jumping forwards relative to said outer rail each time said inner rail is moved with said second device into the inside of said first device; anda sliding bearing coupled between said outer rail and said inner rail;wherein said positioning mechanism comprises:a fixed block injection-molded from plastics and fixedly fastened to said outer rail, said fixed block comprising two parallel lateral side walls, a front side wall connected between said lateral side walls at a front side and defining with said lateral side walls an open chamber, said lateral side walls each having a pivot hole; anda movable block coupled to said fixed block and turned relative to said fixed block between a first position where said movable block is received in the open chamber of said fixed block and stopped at a front side of the locating flange of the rear extension bar of said inner rail and said inner rail is received inside said outer rail, and a second position where said movable block is extended out of the open chamber of said fixed block, said movable block comprising a first clamping arm and a second clamping arm spaced by a gap and adapted to clamp on the front side wall of said fixed block to hold said movable block in said second position, and a protruded locating flange extended from an outer side of said second clamping arm and adapted to engage into the retaining notch of the rear extension bar of said inner rail and to stop at a front side of the locating flange of the rear extension bar of said inner rail when said inner rail is received inside said outer rail said first clamping arm comprising two pivot rods raised from two opposite lateral side walls thereof and respectively coupled to the pivot holes of said fixed block for enabling said movable block to be turned between said first position and said second position.