# US 2019/0356101 A1 · Terminal crimping method and terminal crimping structure

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

- Number: US 2019/0356101 A1
- Document ID: US20190356101A1
- Status: Published application
- Kind: A1
- Application number: 16/386,078
- Filed: 2019-04-16
- Published: 2019-11-21
- Earliest claimed: 2018-05-21
- Assignees: Yazaki Corporation
- Applicants: Yazaki Corporation
- Inventors: Satoki Masuda; Yoshinao Sato; Takeo Ida; Junpei Hayashi
- Web page: https://patentgrep.com/patent/US20190356101A1

## CPC

- H01R 4/20: using a crimping sleeve {(H01R4/01 takes precedence)}
- H01R 43/048: Crimping apparatus or processes (H01R43/042 takes precedence)
- H01R 4/183: {for cylindrical elongated bodies, e.g. cables having circular cross-section (H01R4/01 takes precedence)}
- H01R 9/0518: {Connection to outer conductor by crimping or by crimping ferrule}
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

A terminal crimping method includes covering an end portion of an electric wire with a fixing cylinder portion of a terminal, caulking and crimping the fixing cylinder portion by a pair of dies including pressing projections each having a flat shape in which a length in one axial direction is longer than a length in the other axial direction orthogonal to the one axial direction in a plan view, and caulking the fixing cylinder portion by the pressing projections to form crimp recess portions, in the caulking and crimping the fixing cylinder portion.

## Claims

### Claim 1

A terminal crimping method comprising:
covering an end portion of an electric wire with a fixing cylinder portion of a terminal;
caulking and crimping the fixing cylinder portion by a pair of dies including pressing projections each having a flat shape in which a length in one axial direction is longer than a length in the other axial direction orthogonal to the one axial direction in a plan view; and
caulking the fixing cylinder portion by the pressing projections to form crimp recess portions, in the caulking and crimping the fixing cylinder portion.

### Claim 2 (depends on 1)

The terminal crimping method according to claim 1,
wherein the fixing cylinder portion is caulked by the dies such that a longitudinal direction of each of the pressing projections which is the one axial direction, is aligned in an orthogonal direction which is orthogonal to an axis direction of the electric wire in which the terminal is crimped.

### Claim 3 (depends on 1)

The terminal crimping method according to claim 1,
wherein the electric wire includes a shield conductor formed of a braid,
wherein the terminal includes a crimp cylinder portion through which the electric wire is inserted and a fixing member having the fixing cylinder portion, and
wherein the fixing cylinder portion is caulked by the dies, in a state that the shield conductor which is folded back is disposed between the crimp cylinder portion and the fixing cylinder portion of the fixing member.

### Claim 4

A terminal crimping structure comprising:
an electric wire; and
a terminal,
wherein the terminal includes a fixing cylinder portion which covers an end portion of the electric wire,
wherein the fixing cylinder portion is calked and crimped, and
wherein crimp recess portions having a flat shape in which a length in one axial direction is longer than a length in other axial direction orthogonal to the one axial direction in plan view are formed in the fixing cylinder portion which is calked.

### Claim 5 (depends on 4)

The terminal crimping structure according to claim 4,
wherein a longitudinal direction of each of the crimp recess portions which is the one axial direction, is aligned in an orthogonal direction which is orthogonal to an axis direction of the electric wire in which the terminal is crimped.

### Claim 6 (depends on 4)

The terminal crimping structure according to claim 4,
wherein the electric wire includes a shield conductor formed of a braid,
wherein the terminal includes a crimp cylinder portion through which the electric wire is inserted and a fixing member having the fixing cylinder portion, and
wherein the fixing cylinder portion is caulked, in a state that the shield conductor which is folded back is disposed between the crimp cylinder portion and the fixing cylinder portion of the fixing member.