Patent ID: 8468668

Claim:
A positioning assembly of a hand rivet nut tool comprising: a rotating sleeve having a through hole axially formed through the rotating sleeve; an inner surface defined in the through hole of the rotating sleeve; a rotating knob mounted on and around an outer end of the rotating sleeve; and a mounting groove formed around the inner surface of the rotating sleeve and disposed at the outer end of the rotating sleeve; a mandrel slidably mounted through the through hole of the rotating sleeve and having a mandrel knob formed on an outer end of the mandrel; a positioning groove formed around an outer surface of the mandrel, disposed adjacent to the mandrel knob and corresponding to the mounting groove of the rotating sleeve; a groove bottom defined in the positioning groove; a mandrel diameter defined between two points that are on the outer surface of the mandrel; and a groove diameter defined between two points that are on the groove bottom of the mandrel; and a positioning ring being resilient, mounted in and around the mounting groove of the rotating sleeve and having an outer surface disposed in the mounting groove of the rotating sleeve; an inner surface disposed in the positioning groove of the mandrel; an inner diameter defined between two points that are on the inner surface of the positioning ring, the inner diameter of the positioning ring being shorter than the mandrel diameter of the mandrel and being longer than the groove diameter of the mandrel; and an outer diameter defined between two points that are on the outer surface of the positioning ring, the outer diameter of the positioning ring being longer than the mandrel diameter of the mandrel.