Patent ID: 6942079

Claim:
A power cored winding and releasing device, comprising a reel, a housing for receiving said reel therein, and a coil spring strip mounted in said reel; said reel including a diameter-reduced tubular body, an upper end formed into a conductive disc, and an open lower end formed into a radially extended flange; said reel being provided at a center with a tubular shaft, and on said conductive disc with conductive rings for electrically connecting to an inner end of a first power cord, which is wound around said diameter-reduced tubular body and has an outer end forming a first end of said power cord winding and releasing device; said housing being internally provided at a center with a shaft extended through said tubular shaft of said reel for said reel to rotatably mount around said shaft, and at an upper inner surface with conductive plates adapted to electrically contact with said conductive rings provided on said conductive disc of said reel; said conductive plates also being connected to an inner end of a second power cord, which has an outer end forming a second of said power cord winding and releasing device; said coil spring strip being mounted in said reel in a manner adapted to rotate said reel in a reverse direction when said reel is released from an outward pulling force applied thereto, and thereby causes automatic rewinding of said first power cord around said reel in said housing; said upper end of said reel is a round conductive disc having a central shaft hole and at least two said conductive rings radially sequentially provided thereon; and said conductive rings respectively have a conductive leg for inserting into said diameter-reduced tubular body of said reel to separately electrically connect said conductive rings to positive and negative electrodes at said inner end of said first power cord.