Patent ID: 7523883

Claim:
A dual roll-up wire reel device comprising: a first cover member having an inside surface provided with a central axle, said central axle having a slot; a reinforcing ring fitted over said central axle; a wire having a central section and two end sections; a roll-up disk rotatably mounted on said first cover member, said roll-up disk having an upper deck and a lower deck defining spaces for respectively receiving in a rolled-up manner said two end sections of said wire, said roll-up disk having a top surface formed with a slide groove constituted by a primary groove and a bypass groove in communication with and extending from said primary groove, said primary groove having a slit for effecting micro-amplitude resiliency when said primary groove is subjected to pressure induced by a positioning sphere; said central section of said wire being fixed to said roll-up disk thereby enabling said two end sections to opposite side of said central section to be winded around said roll-up disk; a return coil spring having a center end and a peripheral end, said center end being attached to said central axle of said first cover member, said peripheral end being fixed to said roll-up disk so that when said roll-up disk is rotated, said return coil spring will be strained or released depending on rotating direction of said roll-up disk, a second cover member engaged with said first cover member, said second cover member having an inside surface formed with a track; said positioning sphere arranged between and interact with said inside surface of said second cover member and a major surface of said roll-up disk that faces said second cover member; said track functioning to selectively and alternately switch said positioning sphere between a secured condition and a released condition in case of forward and reversed direction rotation of said roll-up disk; said primary groove and said bypass groove being arranged to allow said positioning sphere to alternately and selectively move into said primary groove and said bypass groove respectively in said secured condition and said released condition when said wire is withdrawn and released respectively, said wire being set to said secured condition by being moved into said primary groove when said wire is withdrawn out of said wire reel device, said positioning sphere being moved into said bypass groove when said wire is released to return to said wire reel device; a plurality of spheres rotatably received in dimples on a surface of said roll-up disk; and pivots provided at outlet openings of said first and second cover members to rotatably support guide rollers for guiding said wire and reducing loading against said return coil spring.