# US 2015/0144729 A1 · Wire-winding device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0144729 A1 - Document ID: US20150144729A1 - Status: Published application - Kind: A1 - Application number: 14/555,512 - Filed: 2014-11-26 - Published: 2015-05-28 - Earliest claimed: 2013-11-26 - Assignees: Foxconn Interconnect Technology Limited - Applicants: Foxconn Interconnect Technology Limited - Inventors: CHI-MING CHEN; KAI-FENG YANG - Web page: https://patentgrep.com/patent/US20150144729A1 ## CPC - B65H 75/4434: {actuated by pulling on or imparting an inclination to the material} - B65H 2701/34: electric cords or electric power cables - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES ## Abstract A wire-winding device comprising: an upper cover having a bottom surface and a slot deviating from a center of the bottom surface; a rotary base having an annular track on a top surface thereof, the annual track and the slot of the upper cover constituting an orbit; a spiral spring received in the rotary base; a transmission line winding around the rotary base; a lower cover assembled with the upper cover; and an elastic positioning element having a base and a positioning part extruding from the lower surface of the base, the base having an elastic part and a respective fixed part at each of two ends thereof, the elastic positioning element being moveable along the orbit in response to a rotational movement of the rotary base to avoid the transmission line to be tied a knot. ## Claims ### Claim 1 A wire-winding device comprising: an upper cover having a bottom surface and a slot deviating from a center of the bottom surface; a rotary base having an annular track on a top surface thereof, the annual track and the slot of the upper cover constituting an orbit; a spiral spring received in the rotary base; a transmission line winding around the rotary base; a lower cover assembled with the upper cover; and an elastic positioning element having a base and a positioning part extruding from the lower surface of the base, the base having an elastic part and a respective fixed part at each of two ends thereof, the elastic positioning element being moveable along the orbit in response to a rotational movement of the rotary base. ### Claim 2 (depends on 1) The wire-winding device as claimed in claim 1, wherein the base of the elastic positioning element is accommodated in the slot of the lower surface of the upper cover, and the positioning part of the elastic positioning element is accommodated in the annual track of the rotary base. ### Claim 3 (depends on 1) The wire-winding device as claimed in claim 1, wherein the rotary base has a groove on the lower surface thereof for accommodating the spiral spring, the groove having a pillar and an outlet on one side thereof and a wire casing on the other side thereof. ### Claim 4 (depends on 3) The wire-winding device as claimed in claim 3, wherein the upper cover has a terraced through hole in the center thereof, the upper cover has a protruding cylinder and a concave hole at each of the two sides thereof, a screw column extends upwardly from the center of the lower cover, the screw column defining a groove on one side thereof. ### Claim 5 (depends on 4) The wire-winding device as claimed in claim 4, wherein the spiral spring has a first end portion and a second end portion, the second end portion is bent into a semicircle, the first end portion is received in the groove of the lower cover, and the second end portion surrounds the pillar of the rotary base. ### Claim 6 (depends on 5) The wire-winding device as claimed in claim 5, wherein the transmission line surrounds the rotary base and is divided into upper and lower rows. ### Claim 7 (depends on 6) The wire-winding device as claimed in claim 6, further comprising a screw screwed in the screw column of the lower cover through the through hole of the upper cover. ### Claim 8 (depends on 7) The wire-winding device as claimed in claim 7, wherein the protruding cylinder and the concave hole of the upper cover are assembled to the concave hole and the protruding cylinder of the lower cover, respectively. ### Claim 9 (depends on 1) The wire-winding device as claimed in claim 1, further comprising a decorative piece, and wherein the upper cover has a circular groove formed on the upper surface, and the decorative piece is accommodated in the circular groove of the upper cover. ### Claim 10 (depends on 1) The wire-winding device as claimed in claim 1, wherein the elastic part of the base is deformed elastically. ### Claim 11 A wire-winding device assembly comprising: cover means defining a receiving space therein; a stationary slot formed in the cover means; a rotary base located around the receiving space and rotatable with regard to the cover means, said rotary base defining an annual track thereof; a torsion spring fixed to both said cover means and said rotary base to constantly urge the rotary base back to move to an original position; a transmission wire winding around the rotary base and adapted to actuate the rotary base to rotate when said transmission wire is pulled outwardly; and an elastic positioning element defining a first section received within and moveable along said slot and a second section received within and moveable along annual track; wherein a depth of said annual track varies in a vertical direction to guide the second section of the elastic positioning element to move therealong, and said elastic positioning element performs elasticity thereof in the vertical direction to comply with the variant depth of said annual track during moving along the annual track. ### Claim 12 (depends on 11) The wire-winding device assembly as claimed in claim 11, wherein the slot is linear. ### Claim 13 (depends on 11) The wire-winding device assembly as claimed in claim 11, wherein the annual track includes an inner annual path and an outer annual path linked to each other with therebetween a joint which defines a latching position where the elastic positioning element resists the torsion spring to have the rotary base is in a working position instead of the original position. ### Claim 14 (depends on 11) The wire-winding device assembly as claim 11, wherein the elastic positioning element forms an elongated piece, the first section forms two spaced parts around two opposite ends thereof while the second section forms one part around a middle portion thereof. ### Claim 15 (depends on 11) The wire-winding device assembly as claimed in claim 11, wherein the cover means define a circular body and two opposite protrusions diametrically, and two opposite ends of the transmission wire extend outwardly via said two protrusions. ### Claim 16 A wire-winding device assembly comprising: cover means defining a receiving space therein; a rotary base located in the receiving space and rotatable with regard to the cover means, said rotary base defining an annual track thereof; a torsion spring fixed to both said cover means and said rotary base to constantly urge the rotary base back to move to an original position; a transmission wire winding around the rotary base and adapted to actuate the rotary base to rotate when said transmission wire is pulled outwardly; and an elastic positioning element defining a protruding section received within and moveable along annual track so as to be moveable relative to the cover means correspondingly; wherein a depth of said annual track varies in a vertical direction to guide the protruding section of the elastic positioning element to move therealong, and said elastic positioning element performs elasticity thereof in the vertical direction to comply with the variant depth of said annual track during moving along the annual track; wherein the annual track includes an inner annual path and an outer annual path linked to each other with therebetween a joint which defines a latching position where the elastic positioning element resists the torsion spring to have the rotary base is in a working position instead of the original position. ### Claim 17 (depends on 16) The wire-winding device assembly as claimed in claim 16, wherein the elastic positioning element is moveable relative to the cover means linearly. ### Claim 18 (depends on 16) The wire-winding device assembly as claimed in claim 16, wherein the elastic positioning element is of a slender type extending along a horizontal direction perpendicular to said vertical direction. ### Claim 19 (depends on 16) The wire-winding device assembly as claimed in claim 16, wherein the cover means define a circular body and two opposite protrusions diametrically, and two opposite ends of the transmission wire extend laterally outwardly via said two protrusions. ### Claim 20 (depends on 16) The wire-winding device assembly as claimed in claim 16, wherein the cover means defines lateral openings to expose an outermost wind of the transmission wire to an exterior.