Structure of a wire winding box

An improved structure of a wire winding box comprising:

• a housing formed by a first housing member, and a second housing member;
• a first communication cable installed at the first housing member;
• a rotatable freely first conductive disk received within the second housing member;
• an outer ring with a receiving chamber being installed at an outer surface of the first conductive disk, a linear groove and a match positioning block being installed at an inner surface of the first conductive disk, a plurality of cambered grooves with unequal diameters being formed alternatively at two sides of the linear groove, while a plurality of cambered conductive pieces being interleaved at two sides of the positioning block so that the conductive pieces can be received within the cambered grooves;
• a spiral spring being received within the receiving chamber, and one end of the spiral spring being firmly secured to the second housing member, another end of the spiral spring being firmly secured to the first conductive disk;
• a second communication cable being wound around the outer ring of the first conductive disk, one end of the second communication cable being inserted into the linear groove of the first conductive disk so that each conductive wire of the second cable is connected to a respective one of the conductive pieces;
• a second conductive disk fixed to the first housing member, a plurality of concentric conductive rings with unequal diameters being installed at an inner lateral side of the second conductive disk for being in contact with the conductive pieces of the first conductive disk, and each said conductive ring is connected to a conductive wire of the first communication cable.