US 12,249,444 B2
Insulated electric wire and wire harness
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)
Filed by AUTONETWORKS TECHNOLOGIES, LTD., Yokkaichi (JP); SUMITOMO WIRING SYSTEMS, LTD., Yokkaichi (JP); and SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Filed on Jan. 12, 2024, as Appl. No. 18/411,937.
Application 18/411,937 is a continuation of application No. 17/426,577, granted, now 11,908,598, previously published as PCT/JP2019/003195, filed on Jan. 30, 2019.
Prior Publication US 2024/0153671 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 7/285 (2006.01)
CPC H01B 7/285 (2013.01) 11 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; and
an insulation covering that covers an outer circumference of the conductor,
wherein the insulated electric wire comprises:
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 provided adjacent to each other in a longitudinal axis direction of the insulated electric wire; and
a water-stopping portion in which gaps between the plurality of elemental wires in the exposed portion are filled with a water-stopping agent,
the water-stopping agent constituting the water-stopping portion continuously covers in a manner so as to connect:
an outer circumference of the conductor in the exposed portion and the gaps between the plurality of elemental wires; and
an outer circumference of the insulation covering at an end of the covered portion that is adjacent to the exposed portion and an area of the exposed portion that covers the outer circumference of the conductor,
at least a portion of the water-stopping agent that is in contact with the plurality of elemental wires is made of a resin material that cures upon contact with the metal material of the plurality of elemental wires, and
the water stopping agent has a viscosity of at least 10 Pas and a an adhesive force of 0.3 MPa or more with respect to a material constituting the insulation covering,
wherein a twist pitch of the plurality of elemental wires is smaller in the exposed portion than in the at least a remote area of the covered portion.