Detachable protective device for table saw

A detachable protective device adapted to be used with a table saw, the table saw including a table and a saw blade that extends transversely through a top surface of the table, said detachable protective device comprising:

• a base support adapted to be fixed to the table and adjacent to the saw blade, said base support having a mounting hole that extends therethrough along an axis, said mounting hole having an engaging portion through which the axis passes, and an open end portion which is disposed at a side of said engaging portion in a direction perpendicular to the axis and which has a width smaller than that of said engaging portion;
• a mounting unit detachably connected to said base support;
• two protective covers pivotally disposed on said mounting unit for covering part of the saw blade;
• and
• a quick-release unit disposed on said mounting unit, and including a positioning pin that extends along the axis and that extends movably through said mounting hole, said positioning pin having:
• a large-diameter section that extends along the axis and that has a diameter larger than the width of said open end portion of said mounting hole, and
• a small-diameter section that is connected to said large-diameter section, that extends along the axis, and that has a diameter smaller than the width of said open end portion of said mounting hole;
• wherein said quick-release unit is operable to move said positioning pin relative to said base support between a locked position, where said large-diameter section is disposed in said engaging portion of said mounting hole and is prevented from being removed from said mounting hole via said open end portion of said mounting hole, thereby securing said mounting unit to said base support, and a release position, where said small-diameter section is disposed in said engaging portion of said mounting hole, thereby allowing separation of said mounting unit from said base support through removal of said small-diameter section from said mounting hole via said open end portion of said mounting hole said quick-release unit further including a pull member disposed on said mounting unit and pivotable about the axis and a follower pin perpendicularly extending through said positioning pin, such that pivoting movement of said pull member drives, via said follower pin, movement of said positioning pin between the locked position and the release position, said pull member having a base wall that surrounds the axis and that is sleeved on said positioning pin, and having two cam segments that protrude from said base wall away from said mounting unit and are disposed respectively at opposite sides of the axis, and abut respectively against opposite ends of said follower pin, each of said cam segments having an inclined cam surface that extends helically and that has opposite first and second ends being respectively adjacent to and distal from said base wall, and an engaging groove that is connected to said second end of said inclined cam surface;
• and
• said opposite ends of said follower pin are located respectively adjacent to said first ends of said inclined cam surfaces of said cam segments when said positioning pin is at the release position, and engage respectively said engaging grooves when said positioning pin is at the locked position.