Patent ID: 7677803

Claim:
A quick release coupling device for a linear guideway comprising a rail, a slide block, a pair of end caps and a pair of connectors; and wherein each of the pair of end caps is secured to either end of the slide block and is defined with a through hole, in the through hole are annularly arranged a slant and rotary abutment surface having a height difference and a plurality of grooves, a lower portion of the rotary abutment surface is located adjacent to the grooves; the pair of connectors are employed to assemble the end caps to the slide block and has an end fixed to the slide block, and another end of the respective connectors is defined with a wing-shaped portion, the wing-shaped portion has an abutment surface for mating with the rotary abutment surface of the end caps, the end caps are mounted on the connectors by moving the groove of the through hole of the connectors along the wing-shaped portion of the connectors until the abutment surface of the wing-shaped portion of the connectors slidably abuts against the rotary abutment surface of the end caps, and then rotating the rotary abutment surface of the end caps to a predetermined extent, a rotation of the rotary abutment surface of the end caps will cause a height difference that makes the rotary abutment surface of the end caps press firmly against the abutment surface of the wing-shaped portion of the connectors; the slide block is moveably mounted on the rail, and at either end of the slide block is defined a positioning hole and a plurality of threaded holes extending in an axial direction of the rail; an oiling route is defined at a side of the respective end caps, and at either side of the respective end caps are formed a plurality of threaded holes; and each of the connectors, besides having screwing and positioning function, is also used as an oil nozzle; a plurality of oiling outlets are defined in the through hole of the end caps and are in communication with the oiling route of the end caps.