Single-pull power and signal cable reel

A single pull power and signal cable reel comprising a positive and negative lead extension plate, a top cap, a forward direction conductor assembly, an engaging element, a cable-rotating disc, a backward direction conductor assembly, a loop spring, a lead wire, a lower cap and a positioning rod structure mounted within the lower cap, characterized in that

• the lead wire is wound on the disc surface of the cable-rotating disc and the ends of the lead wire are inserted to the engaging member mounted within the center seat of the cable reel and are respectively soldered to the conductors of the positive and negative conductor assembly, forming into the rotating disc for the loop spring to rotate within the disc;
• the center end of the loop spring is secured to a center seat and the outer end of the loop spring is mounted to an engaging slot at the inner edge of the lower cap by a hook such that the loop spring can rotate clockwise or anti-clockwise of the cable-rotating disc to form either a tightening or a releasing state to provide a power source to retract of the lead wire for the cable-rotating disc;
• each of the forward and backward conductor assembly is formed from a spring member and a conductor member and is assembled within the center seat and the center hole of the engaging member corresponding to the center seat, each of the spring member is located at a lower position and each of the conductor member is located at an upper position, such that the force of each of the spring member urges each of the conductor member respectively, thereby the positive and negative terminal lead extension plates corresponding to the forward and backward direction conductor member are constantly in contact.