# US 2014/0194014 A1 · Electric wire connection structure

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0194014 A1
- Document ID: US20140194014A1
- Status: Published application
- Kind: A1
- Application number: 14/206,658
- Filed: 2014-03-12
- Published: 2014-07-10
- Earliest claimed: 2011-09-12
- Assignees: Fuji Electric Wire Industries Co., Ltd.
- Applicants: Fuji Electric Wire Industries Co., Ltd.
- Inventors: Kazuhito Inagaki; Shinichi Tsujino; Masaaki Yamamoto; Akira Shibukawa
- Web page: https://patentgrep.com/patent/US20140194014A1

## CPC

- H01R 4/023: {between cables or wires and terminals}
- H01R 4/027: {comprising means for positioning or holding the parts to be soldered or welded}
- H01R 4/183: {for cylindrical elongated bodies, e.g. cables having circular cross-section (H01R4/01 takes precedence)}
- H01R 4/187: {combined with soldering or welding}
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

The present invention has an object of providing an electric wire connection structure for providing sufficiently high electric characteristics by welding and fixing a terminal and core wires, for providing the terminal with a strength sufficiently high to withstand the pressure at the time of welding, and for improving the adhesiveness of the core wires to the terminal by preventing the core wires from escaping at the time of welding. The electric wire connection structure is for connecting core wires (10) exposed at a tip end of a coated wire (12), including the core wires (10) covered with a insulating cover (11), to a conductive terminal (20). The terminal (20) includes a caulking portion (23) in which the core wires (10) are to be held by caulking, and a welding portion (22) to which the core wires (10) are to be fixed by welding. The caulking portion (23) and the welding portion (22) are arranged in a base portion of the terminal (20) in a longitudinal direction thereof. The welding portion (22) of the terminal (20) includes a positioning portion (24) on which the core wires (10) are to be placed, and holding walls (25), rising upward from an inner bottom surface (24a) of the positioning portion (24), for holding the core wires (10) from both sides thereof at the time of welding. The core wires (10) located in the welding portion) (22) are fixed thereto by welding.

## Claims

### Claim 1

An electric wire connection structure for connecting core wires exposed at a tip end of a coated wire, including the core wires covered with an insulating cover, to a conductive terminal, wherein:
the terminal includes:
a caulking portion in which the core wires are to be held by caulking,
and a welding portion to which the core wires are to be fixed by welding,
the caulking portion and the welding portion being arranged in a base portion of the terminal in a longitudinal direction thereof;
the welding portion of the terminal includes:
a positioning portion on which the core wires are to be placed, and
holding walls, rising upward from an inner bottom surface of the positioning portion, for holding the core wires from both sides thereof at the time of welding; and
the core wires located in the welding portion are fixed thereto by welding.

### Claim 2 (depends on 1)

An electric wire connection structure according to claim 1, wherein:
the terminal has a cylindrical shape having a rounded tip obtained as a result of cutting;
the positioning portion has a thickness smaller than a diameter of the cylindrical terminal;
position restriction portions each having an external shape larger than the diameter of the terminal are provided to the front and rear of, and integrally with, the positioning portion; and
the holding walls rise upward from the inner bottom surface of the positioning portion and are provided between, and integrally with, the front and rear position restriction portions.

### Claim 3 (depends on 1)

An electric wire connection structure according to claim 1, wherein:
the terminal is formed of a punched flat blade;
the positioning portion is formed of a recessed portion which is recessed in the welding portion; and
the recessed portion is sandwiched by the holding walls provided on both sides thereof.

### Claim 4 (depends on 1, 2, 3)

An electric wire connection structure according to any one of claims 1 through 3, wherein the caulking portion is located at a base end of the terminal, and the welding portion is located immediately to the front of the caulking portion.