US 12,327,972 B2
Method for manufacturing terminal-equipped electric wire
Kenzo Tanaka, Makinohara (JP)
Assigned to YAZAKI CORPORATION, Tokyo (JP)
Filed by YAZAKI CORPORATION, Tokyo (JP)
Filed on Oct. 17, 2022, as Appl. No. 17/967,053.
Claims priority of application No. 2021-171074 (JP), filed on Oct. 19, 2021.
Prior Publication US 2023/0121706 A1, Apr. 20, 2023
Int. Cl. H01R 43/048 (2006.01); H01R 13/52 (2006.01)
CPC H01R 43/0482 (2013.01) [H01R 13/5216 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for manufacturing a terminal-equipped electric wire including an electric wire having an element wire bundle in which a plurality of conductive element wires are bundled and a tubular insulating sheath covering the element wire bundle, a first terminal crimped to one end of the electric wire, and a second terminal crimped to the other end of the electric wire, the method comprising:
a step of crimping the first terminal to the one end of the electric wire so as to electrically connect the element wire bundle exposed from the one end of the electric wire and the first terminal;
a step of crimping the second terminal to the other end of the electric wire such that an element wire crimping portion of the second terminal is crimped to the element wire bundle exposed from the other end of the electric wire, and a sheath crimping portion of the second terminal is crimped to a tubular seal member attached to an outer periphery of the other end of the electric wire;
a first waterproofing step of providing, at the one end of the electric wire to which the first terminal is crimped, an anticorrosion member that covers the element wire bundle so as to isolate the element wire bundle from outside air; and
a second waterproofing step of providing, at the other end of the electric wire to which the second terminal is crimped, a sealing member so as to fill gaps between the conductive element wires in the tubular insulating sheath and seal an inside of the tubular insulating sheath, wherein
the second waterproofing step includes
a step of applying a moisture curable resin to the element wire bundle which is exposed to an outside and is located between the element wire crimping portion and the sheath crimping portion, and
a step of applying a curing accelerator that accelerates curing of the moisture curable resin to the element wire bundle which is exposed to the outside and is located between the element wire crimping portion and the sheath crimping portion.