Patent ID: 7494083

Claim:
An improved reel structure comprising: a bottom housing having a base trench disposed in a middle of the bottom housing, a spring trench depressed in a middle of the base trench for accommodating a spring, and a plurality of plugholes positioned between the base trench and the spring trench; a movable shaft assembly including a bottom plate with a plurality of bumps beveled in a same direction and disposed on an edge of the bottom plate, and an axial support with a groove disposed in a middle of the bottom plate; a tubular shaft assembly including a tubular shaft with a groove extended from a middle of a base plate, a plurality of sliding openings positioned on the base plate, and a plurality of plugs disposed at a bottom of the base plate; wherein, the axial support of the movable shaft assembly is inserted into the tubular shaft, the bumps on the bottom plate of the movable shaft assembly correspondingly inserted in the sliding openings on the base plate of the tubular shaft assembly to move back and forth therein; the plugs at the bottom of the base plate are inset to the plugholes of the bottom housing, respectively, the spring within the spring trench thereby pushing the bottom plate of the movable shaft assembly; a rotating disc for containing wound cords and having a coil spring is set in the tubular shaft of the tubular shaft assembly and rotates about the tubular shaft, wherein an initial end of the coil spring is attached to the groove of the axial support and the groove of the tubular shaft; a terminal end of the coil spring is fixed on an edge of the rotating disc; a plurality of fastening trenches of the movable shaft assembly in a form complementary to the beveled bumps are depressed at a bottom of the rotating disc and engage with the bumps; a top housing substantially covers the bottom housing; and a tube of a button component passes through a through hole in a center of the top housing and is sleeved onto the axial support of the movable shaft assembly.