Patent ID: 7210386

Claim:
The quickly detachable protective cover unit of a table sawing machine comprising: an extending plate fixedly assembled at the outer side of the saw blade of a table sawing machine, said extending plate having its inner end fixed with a quickly-detachable handle unit, said quickly-detachable handle unit having its intermediate portion formed with an insert space adjustable in its width: a combining plate having its lower end cut with an elongate notch, said elongate notch of said combining plate fitted in said insert space of quickly-detachable handle unit, said combining plate having its upper edge cut with two positioning notches at preset locations, said two positioning notches having their lower end respectively bored with a positioning hole: a protective plate covered around the periphery of said saw blade of said table sawing machine, said protective plate having its peripheral edge pivotally provided with plural elastic positioning projections at preset locations: a non-return plate composed of a fundamental base, a front position-limiting member, a rear position-limiting member and two ratchet plates respectively having a lower convex edge formed with many small teeth, said two ratchet plates respectively assembled on the opposite sides of said fundamental base by said front and said rear position-limiting member, said non-return plate having a quickly detachable device pivotally assembled thereon, said quickly detachable device of said non-return plate inserted in one of said two positioning notches of said combining plate: and a protective cover composed of a basic body, two connecting rod units and two protective plates, said two connecting rod units respectively and pivotally disposed at a preset location of the opposite sides of said basic body, each said protective plate pivotally connected with one end of said connecting rod unit, said basic body having a quickly detachable device pivotally positioned at one end, said quickly detachable device inserted in the other of said two positioning notches of said combining plate.