US 12,283,403 B2
Insulated electric wire, wire harness, and insulated electric wire production method
Kenichiro Araki, Yokkaichi (JP); and Toyoki Furukawa, Yokkaichi (JP)
Assigned to AUTONETWORKS TECHNOLOGIES, LTD., Mie (JP); SUMITOMO WIRING SYSTEMS, LTD., Mie (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 18/016,955
Filed by AUTONETWORKS TECHNOLOGIES, LTD., Yokkaichi (JP); SUMITOMO WIRING SYSTEMS, LTD., Yokkaichi (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Aug. 2, 2021, PCT No. PCT/JP2021/028573
§ 371(c)(1), (2) Date Jan. 19, 2023,
PCT Pub. No. WO2022/030434, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 2020-133409 (JP), filed on Aug. 5, 2020.
Prior Publication US 2023/0352210 A1, Nov. 2, 2023
Int. Cl. H01B 7/28 (2006.01); H01B 7/00 (2006.01); H01B 7/08 (2006.01); H01B 7/282 (2006.01); H01B 7/285 (2006.01); H01B 7/38 (2006.01)
CPC H01B 7/0876 (2013.01) [H01B 7/0045 (2013.01); H01B 7/2825 (2013.01); H01B 7/285 (2013.01); H01B 7/38 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An insulated electric wire comprising:
a conductor in which a plurality of elemental wires made of a metal material are twisted together;
an insulation covering that covers an outer circumference of the conductor;
an exposed portion in which the insulation covering is removed from the outer circumference of the conductor;
a covered portion in which the insulation covering covers the outer circumference of the conductor, the exposed portion and the covered portion being adjacent to each other in a longitudinal axis direction; and
a water-stopping portion in which a water-stopping agent is over the exposed portion and over a part of the covered portion that is adjacent to the exposed portion; wherein
the water-stopping portion continuously comprises:
an inter-elemental-wire filling area where the water-stopping agent fills gaps between the elemental wires in the exposed portion,
an exposed-portion-outer-circumferential area in which the water-stopping agent covers the outer circumference of the conductor in the exposed portion, and
a covered-portion-outer-circumferential area in which the water-stopping agent covers an outer circumference of the insulation covering in a region that is a part of the covered portion and is adjacent to the exposed portion;
a subject region is a region of the exposed-portion-outer-circumferential area other than a region closer to the covered-portion-outer-circumferential area which has an increased diameter due to a thickness of the insulation covering;
a difference between a maximum outer diameter and a minimum outer diameter in the subject region is not greater than 12% of the minimum outer diameter; and
a twist pitch of the elemental wires is smaller in the exposed portion than in an area of the covered portion.