Terminal fitting and method of manufacturing wire with terminal

Patent metadata

Field	Value
Publication number	US-2016006164-A1
Application number	US-201514857318-A
Country	US
Kind code	A1
Filing date	Sep 17, 2015
Priority date	Mar 19, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

A wire connection part of a terminal fitting includes: a barrel piece which is caulked while covering a tip end of a wire, thereby being crimped to the wire; a serration part formed on an inner surface of the barrel piece and connected to a core of the wire; and a water stop part mounted on the inner surface of the barrel piece to close a gap with the wire. A projecting piece mounted anterior to the serration part to position a tip end of the core is mounted to the barrel piece. The tip end of the core is positioned by the projecting piece, whereby the positional deviation of the wire can be prevented.

First claim

What is claimed is:

1 . A terminal fitting comprising:
an electric contact part connected to a counterpart terminal from front; and a wire connection part connected to a wire at a back of the electric contact part, wherein the wire connection part includes: a barrel piece which is caulked while covering a tip end of the wire, thereby being crimped to the wire; a serration part formed on an inner surface of the barrel piece and connected to a core of the wire; and a water stop part mounted on the inner surface of the barrel piece to close a gap with the wire, and a positioning unit mounted anterior to the serration part to position a tip end of the core is mounted to at least one of the barrel piece and the water stop part.

2 . The terminal fitting according to claim 1 , wherein
the positioning unit is formed such that a projecting piece projecting forward at a circumferential end of the barrel piece or the water stop part is deformed toward the core by caulking, or the positioning unit is formed such that a front end of the barrel piece is deformed toward the core by caulking.

3 . A manufacturing method for manufacturing a wire with a terminal by crimping the terminal fitting according to claim 1 to a wire, the method comprising:
applying a liquid water stop material onto an inner surface of the barrel piece to form the water stop part, or attaching a sheet-type water stop material to the inner surface of the barrel piece to form the water stop part; and
deforming the barrel piece into a cylinder by caulking to cover the tip end of the wire as well as to cause the water stop part to be in close contact with the wire.

4 . A manufacturing method for manufacturing a wire with a terminal by crimping the terminal fitting according to claim 2 to a wire, the method comprising:
applying a liquid water stop material onto an inner surface of the barrel piece to form the water stop part, or attaching a sheet-type water stop material to the inner surface of the barrel piece to form the water stop part; and
deforming the barrel piece into a cylinder by caulking to cover the tip end of the wire as well as to cause the water stop part to be in close contact with the wire.

Assignees

• Yazaki Corp

Inventors

• Sato Kei

Classifications

• H01R13/52

  Dustproof, splashproof, drip-proof, waterproof, or flameproof cases · CPC title

• H01R4/184

  comprising a U-shaped wire-receiving portion · CPC title

• H01R43/16

  for manufacturing contact members, e.g. by punching and by bending · CPC title

• H01R4/70

  Insulation of connections (end caps H01R4/22) · CPC title

• H01R43/005

  for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing · CPC title