Covered electrical wire, terminal-equipped electrical wire, copper alloy wire, and copper alloy stranded wire

Patent metadata

Field	Value
Publication number	US-11380458-B2
Application number	US-201917269895-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Aug 21, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

A covered electrical wire comprises a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a plurality of copper alloy wires composed of a copper alloy and twisted together, and has a wire diameter of 0.5 mm or less, the copper alloy containing Ni, or Ni and Fe in an amount of 0.1% by mass or more and 1.6% by mass or less in total, and P in an amount of 0.05% by mass or more and 0.7% by mass or less, with a balance being Cu and impurities, in the copper alloy, a ratio of precipitation of P to solid solution of P being 1.1 or more.

First claim

The invention claimed is:

1. A covered electrical wire comprising a conductor and an insulating covering layer provided outside the conductor,
the conductor being a stranded wire composed of a plurality of copper alloy wires composed of a copper alloy and twisted together, and having a wire diameter of 0.5 mm or less,
the copper alloy containing
Ni, or Ni and Fe in an amount of 0.1% by mass or more and 1.6% by mass or less in total, and
P in an amount of 0.05% by mass or more and 0.7% by mass or less,
with a balance being Cu and impurities,
in the copper alloy, a ratio of precipitation of P to solid solution of P being 1.1 or more.

2. The covered electrical wire according to claim 1 , wherein the copper alloy includes Sn in an amount of 0.05% by mass or more and 0.7% by mass or less.

3. The covered electrical wire according to claim 1 , wherein a ratio in mass of a total amount of Ni and Fe to a P content is 3 or more.

4. The covered electrical wire according to claim 1 , wherein the copper alloy includes one or more elements selected from C, Si, and Mn in an amount of 10 ppm by mass or more and 500 ppm by mass or less in total.

5. The covered electrical wire according to claim 1 , wherein the copper alloy wire has a tensile strength of 385 MPa or more.

6. The covered electrical wire according to claim 1 , wherein the copper alloy wire provides an elongation at fracture of 5% or more.

7. The covered electrical wire according to claim 1 , wherein the copper alloy wire has a conductivity of 60% IACS or more.

8. The covered electrical wire according to claim 1 , wherein the copper alloy wire has a work hardening exponent of 0.1 or more.

9. The covered electrical wire according to claim 1 , having a terminal fixing force of 45 N or more.

10. The covered electrical wire according to claim 1 , having an impact resistance energy of 3 J/m or more in a state with a terminal attached to the covered electrical wire.

11. The covered electrical wire according to claim 1 , having an impact resistance energy of 6 J/m or more.

12. A terminal-equipped electrical wire comprising a covered electrical wire according to claim 1 and a terminal attached to an end of the covered electrical wire.

13. A copper alloy wire composed of a copper alloy containing
Ni, or Ni and Fe in an amount of 0.1% by mass or more and 1.6% by mass or less in total, and
P in an amount of 0.05% by mass or more and 0.7% by mass or less,
with a balance being Cu and impurities,
in the copper alloy, a ratio of precipitation of P to solid solution of P being 1.1 or more, and having
a wire diameter of 0.5 mm or less.

14. A copper alloy stranded wire formed of a plurality of copper alloy wires, each according to claim 13 , twisted together.

15. The copper alloy stranded wire according to claim 14 , having an impact resistance energy of 1.5 J/m or more in a state with a terminal attached to the copper alloy stranded wire.

16. The copper alloy stranded wire according to claim 14 , having an impact resistance energy of 4 J/m or more.

Assignees

• Sumitomo Electric Industries
• Sumitomo Wiring Systems
• Autonetworks Technologies Ltd

Inventors

• Sakamoto Kei
• Inoue Akiko
• Kuwabara Tetsuya
• Oshima Yusuke
• Nakamoto Minoru
• Nanjo Kazuhiro
• Nishikawa Taichiro
• Nakai Yoshihiro
• Goto Kazuhiro
• Toyoshima Ryo
• Otsuka Yasuyuki
• Imasato Fumitoshi
• Kobayashi Hiroyuki

Classifications

• C22F1/00

  Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24) · CPC title

• H01B7/18

  Protection against damage caused} by wear, mechanical force or pressure; {Sheaths; Armouring · CPC title

• H01B1/026 Primary

  Alloys based on copper · CPC title

• H01B5/08

  Several wires or the like stranded in the form of a rope · CPC title

• C22F1/08

  of copper or alloys based thereon · CPC title