Table saw guard

A table saw guard comprising:

• a riving knife having
• a knife body;
• and
• two positioning slots recessed on the knife body at a spaced interval and respectively being a first positioning slot and a second positioning slot;
• a hollow mounting frame having a first positioning pin configured to enter or withdraw from the first positioning slot;
• an interior space;
• a bottom opening formed on a bottom of the mounting frame, communicating with the interior space of the mounting frame, and configured to face a saw blade of a table saw;
• and
• an outlet formed on a top of the mounting frame, communicating with the interior space of the mounting frame, and being tube-shaped to be connectable to a dust connector via a pipeline;
• a blade guard pivotally connected to the mounting frame;
• and
• a switch pivotally connected to the mounting frame, configured to pivot between a locking position and an unlocking position, and having
• a second positioning pin configured to enter or withdraw from the second positioning slot;
• wherein when the switch is located at the locking position, the second positioning pin is located in the second positioning slot to position the riving knife with respect to the mounting frame;
• when the switch pivots toward the unlocking position, the second positioning pin withdraws from the second positioning slot, which allows the first positioning pin to withdraw from the first positioning slot so as to detach the riving knife and the mounting frame.