US 11,749,439 B2
Common mode choke coil
Retsu Sugawara, Tokyo (JP); Kazutoshi Awane, Tokyo (JP); and Yudai Yoneoka, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/49,036
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jul. 17, 2019, PCT No. PCT/JP2019/001323
§ 371(c)(1), (2) Date Oct. 20, 2020,
PCT Pub. No. WO2020/003565, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018-123064 (JP), filed on Jun. 28, 2018.
Prior Publication US 2021/0327629 A1, Oct. 21, 2021
Int. Cl. H01F 27/22 (2006.01); H01F 17/06 (2006.01); H01F 27/00 (2006.01); H01F 17/00 (2006.01)
CPC H01F 17/06 (2013.01) [H01F 27/006 (2013.01); H01F 27/22 (2013.01); H01F 2017/0093 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A common mode choke coil, comprising:
a magnetic core; and
a pair of coils wound on a winding portion of the magnetic core,
wherein the pair of coils include a first pole coil and a second pole coil having a rectangular cylinder shape which are each wound on the winding portion in a spiral shape by N turns in a length direction of the winding portion,
wherein the first pole coil and the second pole coil are arranged on the winding portion so that a plurality of turns of the N turns are adjacent to each other,
wherein the adjacent first pole coil and second pole coil each include a parallel running portion and a non-parallel running portion, the first pole coil and the second pole coil overlapping each other in the parallel running portion, and separating from each other in a direction orthogonal to the length direction of the winding portion in the non-parallel running portion when the plurality of turns of the first pole coil and the second pole coil are viewed from the length direction of the winding portion,
where N is an integer of 2 or more, and
wherein the adjacent first pole coil and second pole coil each include the parallel running portions on two opposing sides of four sides that define the rectangular cylinder shape.