# US 2014/0152415 A1 · Winding structure, coil winding, coil part, and coil winding manufacturing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152415 A1 - Document ID: US20140152415A1 - Status: Published application - Kind: A1 - Application number: 14/090,994 - Filed: 2013-11-26 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Sumida Corporation - Applicants: Sumida Corporation - Inventors: Hiroshi KAWASHIMA - Web page: https://patentgrep.com/patent/US20140152415A1 ## CPC - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 27/2847: {Sheets; Strips (H01F27/2866 takes precedence)} - H01F 41/061: Winding flat conductive wires or sheets - H01F 41/071: Winding coils of special form (winding conductors onto closed formers or cores H01F41/08) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract There is provided a winding structure, a coil winding, a coil part, and a coil winding manufacturing method, which are capable of preventing occurrence of an extra space due to existence of a connecting wire part when two winding parts and a connecting wire part connecting the winding parts are formed. ## Claims ### Claim 1 A winding structure, comprising: a first winding part formed by winding a flat wire; a second winding part formed by winding the flat wire continuing to the first winding part, the second winding part being wound in a same winding direction as a winding direction of the first winding part; and a part to be connecting wire located between the first winding part and the second winding part to connect the winding parts, wherein the part to be connecting wire has: an interval defining portion defining an interval between the first winding part and the second winding part; a first coupling portion with one end side continuing to the interval defining portion and another end side continuing to the first winding part on is one side in an axial direction of the first winding part; and a second coupling portion with one end side continuing to the interval defining portion and another end side continuing to the second winding part on another side in an axial direction of the second winding part, and at least one of the first coupling portion and the second coupling portion becomes a twisted portion by twisting by approximately 180 degrees in total. ### Claim 2 (depends on 1) The winding structure according to claim 1, wherein numbers of windings of the first winding part and the second winding part are equal. ### Claim 3 (depends on 1) The winding structure according to claim 1, wherein the first coupling portion and the second coupling portion continue to the interval defining portion by forming an edgewise bending in a same direction as a winding direction of the first winding part, and either one of the first coupling portion and the second coupling portion becomes a twisted portion by twisting by approximately 180 degrees. ### Claim 4 (depends on 1) The winding structure according to claim 1, wherein extending directions of the first coupling portion and the second coupling portion are same as an extending direction of the interval defining portion, and both the first coupling portion and the second coupling portion become a twisted portion by twisting each by approximately 90 degrees in a same direction. ### Claim 5 (depends on 3) The winding structure according to claim 3, wherein a first terminal on a side opposite to the first coupling portion in the first winding part and a second terminal on a side opposite to the second coupling portion in the second winding part have front end sides extending in a same direction. ### Claim 6 (depends on 4) The winding structure according to claim 4, wherein a first terminal on a side opposite to the part to be connecting wire in the first winding part and a second terminal on a side opposite to the part to be connecting wire in the second winding part have front end sides extending in opposite directions from each other. ### Claim 7 (depends on 3) A coil winding using the winding structure according to claim 3, wherein a boundary portion between the first coupling portion and the first winding part is bent so that the first coupling portion extends in a direction to depart from the first winding part, a boundary portion between the second coupling portion and the second winding part is bent so that the second coupling portion extends in a direction to depart from the second winding part, and a connecting wire part is formed from the part to be connecting wire by the bending of the boundary portions. ### Claim 8 (depends on 4) A coil winding using the winding structure according to claim 4, wherein a boundary portion between the first coupling portion and the first winding part is bent so that the first coupling portion extends in a direction to depart from the first winding part, a boundary portion between the second coupling portion and the second winding part is bent so that the second coupling portion extends in a direction to depart from the second winding part, a boundary portion between the first coupling portion and the interval defining portion and a boundary portion between the second coupling portion and the interval defining portion are bent so that the first winding part and the second winding part are located on a same side in the axial direction, and a connecting wire part is formed from the part to be connecting wire by the bending of the boundary portions. ### Claim 9 (depends on 7) The coil winding according to claim 7, wherein the first terminal on a side opposite to the connecting wire part in the first winding part and the second terminal on a side opposite to the connecting wire part in the second winding part have front end sides extending in a same direction, and one of the first terminal and the second terminal is located on an facing portion side where the first winding part and the second winding part face is each other, and the other of the first terminal and the second terminal is located on an outer peripheral side where the first winding part and the second winding part do not face each other. ### Claim 10 (depends on 7) A coil part, comprising: the coil winding according to claims 7; and a core body formed from a magnetic material, provided in a ring shape, and inserted through a center hole of the first winding part and a center hole of the second winding part. ### Claim 11 A coil winding manufacturing method for forming a coil winding from a flat wire, the method comprising: a first winding step of winding the flat wire to form a first winding part; a second winding step of winding the flat wire in a same winding direction as a winding direction of the first winding part to form a second winding part; a part to be connecting wire forming step of forming, after the first winding step and before the second winding step, a part to be connecting wire having an interval defining portion defining an interval between the first winding part and the second winding part, a first coupling portion with one end side continuing to the interval defining portion and another end side continuing to the first winding part on one side in an axial direction of the first winding part, and a second coupling portion with one end side continuing to the interval defining portion and another end side continuing to the second winding part on another side in an axial direction of the second winding part, a twisted portion forming step of twisting, by approximately 180 degrees in total, at least one of the first coupling portion and the second coupling portion after the part to be connecting wire forming step; and a connecting wire part forming step of bending a boundary portion between the first coupling portion and the first winding part and bending a boundary portion between the second coupling portion and the second winding part, to thereby form a connecting wire part from the part to be connecting wire.