Die for terminalized electric wire

Patent metadata

Field	Value
Publication number	US-10468846-B2
Application number	US-201615072709-A
Country	US
Kind code	B2
Filing date	Mar 17, 2016
Priority date	Mar 20, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A die for a terminalized electric wire is provided with a first electrode, a hole forming jig, an electric wire pressing jig which surrounds a periphery of the first electrode, a second electrode and conductor accommodation parts. The conductor accommodation parts are recessed in molded inner wall surfaces at both sides of the electric wire pressing jig which holds a superposed configuration part in which the end side is superposed on the root side of the annular conductor in the vertical direction. A part of a molten conductor of the superposed configuration part flows into the conductor accommodation parts.

First claim

What is claimed is:

1. A die for molding a terminalized electric wire from an annular conductor of an electric wire with a coating removed from the annular conductor, the annular conductor includes an inner hole and a superposed configuration part where an end of the electric wire is superposed on a root side of the electric wire, the inner hole of the annular conductor has a teardrop configuration that includes a circular portion and a triangular portion, and the triangular portion extends along the superposed configuration part, the die comprising:
a first electrode including an annular forming surface and a contact pressing surface continuously formed with the annular forming surface, the contact pressing surface being inclined relative to the annular forming surface;
a hole forming jig including an outer peripheral surface;
an electric wire pressing jig including an inner wall surface that extends around the outer peripheral surface of the hole forming jig;
a second electrode; and
conductor accommodation parts,
wherein the annular conductor of the electric wire with the coating removed and with the end superposed on the root side is to be mounted on the first electrode,
wherein the hole forming jig extends away from the annular forming surface of the first electrode and is configured to pass through the inner hole of the annular conductor,
wherein the second electrode has a conductor-pressing protrusion which is configured to be fitted to a conductor-forming recess defined and formed by the first electrode and the electric wire pressing jig so as to pressurize and heat the annular conductor between the first electrode and the second electrode, the conductor-pressing protrusion protrudes toward the annular forming surface and the contact pressing surface when the conductor-pressing protrusion is fitted in the conductor-forming recess,
wherein the conductor accommodation parts are opposed surface portions of the inner wall surface of the electric wire pressing jig which are configured to hold the superposed configuration part,
wherein the conductor accommodation parts are configured so that a part of a molten conductor of the superposed configuration part flows to the conductor accommodation parts,
wherein the hole forming jig includes a clearance intruding bulge part that is a bulge in the outer peripheral surface of the hole forming jig, and the clearance intruding bulge part is configured to extend into the triangular portion of the inner hole of the annular conductor,
wherein the clearance intruding bulge part bulges toward the contact pressing surface, and
wherein the electric wire pressing jig is movable relative to the first electrode and the second electrode.

2. The die for molding the terminalized electric wire according to claim 1 ,
wherein a cross-sectional configuration of the hole forming jig in a direction intersecting at right angles to an axis of the hole forming jig is a teardrop configuration in which a part of a circular form as an outline protrudes substantially in a triangular configuration which forms the clearance intruding bulge part.

3. The die for molding the terminalized electric wire according to claim 1 ,
wherein the electric wire pressing jig is movable relative to the hole forming jig.

4. A die for molding a terminalized electric wire from an annular conductor of an electric wire with a coating removed from the annular conductor, the annular conductor includes an inner hole and a superposed configuration part where an end of the electric wire is superposed on a root side of the electric wire, the inner hole of the annular conductor has a teardrop configuration includes a circular portion and a triangular portion, and the triangular portion extends along the superposed configuration part, the die comprising:
a first electrode including an annular forming surface and a contact pressing surface continuously formed with the annular forming surface, the contact pressing surface being inclined relative to the annular forming surface;
a hole forming jig including an outer peripheral surface;
an electric wire pressing jig including an inner wall surface that extends around the outer peripheral surface of the hole forming jig;
a second electrode; and
conductor accommodation parts,
wherein the annular conductor of the electric wire with the coating removed and with the end superposed on the root side is to be mounted on the first electrode,
wherein the hole forming jig extends away from the annular forming surface of the first electrode and is configured to pass through the inner hole of the annular conductor,
wherein the second electrode has a conductor-pressing protrusion which is configured to be fitted to a conductor-forming recess defined and formed by the first electrode and the electric wire pressing jig so as to pressurize and heat the annular conductor between the first electrode and the second electrode, the conductor-pressing protrusion protrudes toward the annular forming surface and the contact pressing surface when the conductor-pressing protrusion is fitted in the conductor-forming recess,
wherein the conductor accommodation parts are opposed surface portions of the inner wall surface of the electric wire pressing jig which are configured to hold the superposed configuration part,
wherein the conductor accommodation parts are configured so that a part of a molten conductor of the superposed configuration part flows to the conductor accommodation parts,
wherein the hole forming jig includes a clearance intruding bulge part that is a bulge in the outer peripheral surface of the hole forming jig, and the clearance intruding bulge part is configured to extend into the triangular portion of the inner hole of the annular conductor,
wherein the clearance intruding bulge part bulges toward the contact pressing surface,
wherein the electric wire pressing jig is movable relative to the first electrode, and
wherein the electric wire pressing jig includes a first electric wire pressing jig and a second wire electric pressing jig that are movable toward and away from each other.

5. A die for molding a terminalized electric wire from an annular conductor of an electric wire with a coating removed from the annular conductor, the annular conductor includes an inner hole and a superposed configuration part where an end of the electric wire is superposed on a root side of the electric wire, the inner hole of the annular conductor has a teardrop configuration includes a circular portion and a triangular portion, and the triangular portion extends along the superposed configuration part, the die comprising:
a first electrode including an annular forming surface and a contact pressing surface continuously formed with the annular forming surface, the contact pressing surface being inclined relative to the annular forming surface;
a hole forming jig including an outer peripheral surface;
an electric wire pressing jig including an inner wall surface that extends around the outer peripheral surface of the hole forming jig;
a second electrode; and
conductor accommodation parts,
wherein the annular conductor of the electric wire with the coating removed and with the end superposed on the root side is to be mounted on the first electrode,
wherein the hole forming jig extends away from the annular forming surface of the first electrode and is configured to pass through the inner hole of the annular conductor,
wherein the second electrode has a conductor-pressing protrusion which is configured to be fitted to a conductor-forming recess defined and formed by the first electrode and the electric wire pressing jig so as to pressurize and heat the annular conductor between the first electrode and the second electrode, the conductor-pressing protrusion protrudes toward the an

Assignees

• Yazaki Corp

Inventors

• Koda Yoshitaka
• Mori Shigeo

Classifications

• B23K11/0026

  Welding of thin articles · CPC title

• H01R43/0214 Primary

  Resistance welding (H01R43/0228 takes precedence) · CPC title

• B23K11/3009

  Pressure electrodes · CPC title

• B23K11/10 Primary

  Spot welding; Stitch welding · CPC title

• B23K2103/10

  Aluminium or alloys thereof · CPC title