US 12,437,897 B2
Magnet wire and coil
Hitoshi Imamura, Osaka (JP); Hiroaki Wada, Osaka (JP); Yasuyuki Yamaguchi, Osaka (JP); Takeshi Kozuki, Osaka (JP); Yuuki Kuwajima, Osaka (JP); Manabu Fujisawa, Osaka (JP); and Masamichi Sukegawa, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/605,635
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Apr. 17, 2020, PCT No. PCT/JP2020/016917
§ 371(c)(1), (2) Date Oct. 22, 2021,
PCT Pub. No. WO2020/218205, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-085303 (JP), filed on Apr. 26, 2019.
Prior Publication US 2022/0223316 A1, Jul. 14, 2022
Int. Cl. H01B 3/44 (2006.01); H01B 1/02 (2006.01); H01F 1/14 (2006.01)
CPC H01B 3/445 (2013.01) [H01B 1/026 (2013.01); H01F 1/143 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A coil comprising a flat magnet wire comprising
(i) a flat conductor and an insulating coating formed on an outer periphery thereof, and
(ii) an insulating coating containing a copolymer (a) which
contains a tetrafluoroethylene unit and a fluoroalkyl vinyl ether unit,
has a melt flow rate of 10 to 40 g/10 min, and
has a fluoroalkyl vinyl ether unit content of 6.2 to 8.0% by mass based on a total content of monomer units,
wherein the insulating coating contains only the copolymer (a) as a polymer material;
wherein the coil is formed by bending and winding the flat magnet wire in an edgewise direction.