Positioning structure

A positioning structure, comprising a locating member, a movable mechanism and a positioning mechanism, said locating member comprising a displacement chamber and a plurality of retaining holes disposed in communication with said displacement chamber, said movable mechanism being mounted in said displacement chamber, said movable mechanism comprising a sliding member and a position-limiting member, said position-limiting member being connected to a top side of said sliding member, wherein:

• said positioning mechanism comprises an abutment member and two actuation members, said abutment member comprising two abutment portions bilaterally disposed at a top side thereof, two guide portions bilaterally disposed at an opposing bottom side thereof and two guide grooves located on a bottom wall thereof, each said actuation member comprising a body, a resilient arm upwardly extended from said body and a protruding portion perpendicularly extended from an opposing bottom end of said body, said abutment member being mounted in said position-limiting member of said movable mechanism with said abutment portions respectively extended out of said position-limiting member, said body of each said actuation member being pivotally connected to said sliding member, said resilient arms of said two actuation members being disposed below said guide portion of said abutment member such that said abutment portion of said abutment member is received inside said position-limiting member and said protruding portions of said actuation members are respectively engaged into the respective said retaining holes of said locating member.