Connection structure and connection method for terminal fitting

Patent metadata

Field	Value
Publication number	US-9948014-B2
Application number	US-201615363605-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Nov 30, 2015
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A connection structure of a terminal fitting includes the terminal fitting including a terminal body, and a plurality of terminal connection portions extending from the terminal body and connection terminals connected to end portions of electric wires. Each of the connection terminals includes a pair of fastening caulking pieces which erects on opposite side portions of a terminal bottom portion. The pair of the fastening caulking pieces are caulked with opposite side portions of a corresponding one of the terminal connection portions from outside so that the connection terminal is caulked and fastened to the terminal fitting. Concave-convex engagement portions are provided in opposed surfaces in which the terminal connection portion and the terminal bottom portion abut against each other. The terminal fitting is connected to the electric wires through the connection terminals.

First claim

What is claimed is:

1. A connection structure of a terminal fitting comprising:
the terminal fitting including a terminal body, and a plurality of terminal connection portions extending from the terminal body, each terminal connection portion includes a first surface; and
connection terminals connected to end portions of electric wires,
wherein each of the connection terminals includes a pair of fastening caulking pieces which erects on opposite side portions of a terminal bottom portion, the terminal bottom portion includes a second surface,
wherein the pair of the fastening caulking pieces are caulked with opposite side portions of a corresponding one of the terminal connection portions from outside so that the connection terminal is caulked and fastened to the terminal fitting,
wherein the first surface of the connection portion opposes and abuts the second surface of the terminal bottom portion,
wherein a convex engagement portion protrudes from one of the first surface and the second surface, and a concave engagement portion is recessed from a different one of the first and second surface and engages the convex engagement portion,
wherein the terminal fitting is connected to the electric wires through the connection terminals.

2. The connection structure of the terminal fitting according to claim 1 ,
wherein each of the concave-convex engagement portions includes concave grooves extending in a width direction of the terminal bottom portion and convex strips extending in the width direction of the terminal connection portion.

3. A connection method for a terminal fitting, in which the terminal fitting includes a terminal body and a plurality of terminal connection portions extending from the terminal body, and a pair of fastening caulking pieces which erects on opposite side portions of a terminal bottom portion in each of connection terminals connected to end portions of electric wires is caulked and connected to a corresponding one of the terminal connection portions, the connection method comprising:
mounting the terminal connection portion on the terminal bottom portion; and
crushing and caulking the fastening caulking pieces with outer sides of opposite side portions of the terminal connection portion, and forming convex engagement portions in an opposed face abutting against the terminal connection portion in at least one of the terminal bottom portion and the fastening caulking pieces so that the convex engagement portions protrude from the opposed face and the connection terminal and the terminal connection portion are concave-convex engaged.

4. The connection method for the terminal fitting according to claim 3 ,
wherein the fastening caulking pieces of the connection terminal are crushed and caulked so as to form the convex engagement portions including convex strips which extend in a width direction.

Assignees

• Yazaki Corp

Inventors

• Yamamoto Takatatsu
• Mita Keiichi

Classifications

• H01R4/04

  using electrically conductive adhesives · CPC title

• H01R11/09 Primary

  the connecting locations being identical · CPC title

• H01R11/28

  End pieces consisting of a ferrule or sleeve · CPC title

• H01R4/188

  having an uneven wire-receiving surface to improve the contact · CPC title

• H01R11/12 Primary

  End pieces terminating in an eye, hook, or fork · CPC title