Patent ID: 7364108

Claim:
A contact structure for electrical connection in a cable winding reel comprising: a first cable connected to a rotating body which rotates during a cable winding operation; a second cable connected to a fixed body which does not rotate during the cable winding operation; a first base plate mounted to one of the rotating and fixed bodies, and provided with a plurality of terminal pins arranged on the first base plate and connected to one end of an associated one of the first and second cables, the terminal pins being spaced apart from a center of the first base plate by different distances, respectively; and a second base plate mounted to the other one of the rotating and fixed bodies, and provided with a plurality of annular terminals concentrically arranged on the second base plate and connected to one end of an associated one of the first and second cables, the annular terminals having radii corresponding to the spaced distances of the terminal pins, respectively, wherein the first and second base plates are concentrically arranged to face each other such that the terminal pins and the corresponding annular terminals come into contact with each other, whereby rotary contact is maintained between the terminal pins on the first base plate and the corresponding annular terminals on the second base plate, even during the cable winding operation to wind the first cable, thereby maintaining electrical connection for transmission of electricity or signals between the first and second cables.