US 12,149,037 B2
Electric wire manufacturing method and electric wire manufacturing apparatus
Kei Sato, Shizuoka (JP)
Assigned to YAZAKI CORPORATION, Tokyo (JP)
Filed by Yazaki Corporation, Tokyo (JP)
Filed on Jul. 20, 2021, as Appl. No. 17/380,102.
Claims priority of application No. 2020-124831 (JP), filed on Jul. 22, 2020.
Prior Publication US 2022/0029370 A1, Jan. 27, 2022
Int. Cl. H01R 43/02 (2006.01); H01R 43/048 (2006.01)
CPC H01R 43/0221 (2013.01) [H01R 43/0263 (2013.01); H01R 43/048 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electric wire manufacturing method comprising:
placing a core wire inside a jig having a tubular shape defining a hollow tubular space, the core wire including a plurality of strands and including a distal tip face that remains located within the hollow tubular space of the jig;
forming a joined portion that integrates the strands by emitting laser light toward a tip of the core wire placed inside the jig, the laser light being emitted in an axial direction of the core wire, wherein
in the placing, the core wire is placed with a gap between an inner wall surface of the jig and an outer circumferential surface of the core wire while the tip of the core wire faces upward relative to a horizontal line, the gap extending along an entire length of the inner wall surface of the jig, and
in the forming the joined portion, the joined portion is formed by filling the gap with a melted substance of the strands; and
removing the core wire with the formed joined portion form the jig.