Abstract: A support apparatus has a positioning disc mounted on a sucking disc. An operation disc is mounted on the positioning disc and has a receiving hole. Two bevel ribs are arc-shaped, are formed on and protrude along an inner wall of the receiving hole. The sucking disc has a column mounted through the positioning disc and the receiving hole of the operation disc. A pin is mounted through the column, with two ends of the pin protruding beyond the column and abutting against the two bevel ribs of the operation disc. By rotating the operation disc to axially move the pin upon abutting against the bevel ribs to pull the sucking disc, the sucking disc can be adhered to a tablet PC. A pivotable stand connected to the positioning disc can be rested on a desk to facilitate viewing at any angle.

Abstract: A support apparatus has a positioning disc mounted on a sucking disc. An operation disc is mounted on the positioning disc and has a receiving hole. Two bevel ribs are arc-shaped, are formed on and protrude along an inner wall of the receiving hole. The sucking disc has a column mounted through the positioning disc and the receiving hole of the operation disc. A pin is mounted through the column with two ends of the pin protruding beyond the column and abutting against the two bevel ribs of the operation disc. By rotating the operation disc to axially move the pin upon abutting against the bevel ribs so as to pull the sucking disc, the sucking disc can be adhered to a tablet PC. A pivotable stand connected to the positioning disc can be rested on a desk to facilitate viewing at any angle.