Electrical wire

• US 9,443,642 B2
• Filed: 04/06/2015
• Issued: 09/13/2016
• Est. Priority Date: 10/01/2010
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Matsuno, Takayuki
• Primary Examiner(s): Ng, Sherman
• Application Number:
  US14/679,182
• Publication Number:
  US 20150213922A1
• Time in Patent Office: 526 Days
• Field of Search: 174/126.1, 174/128.1, 174/128.2, 174/110.R
• US Class Current: 1/1
• CPC Class Codes: H01B 1/023 Alloys based on aluminium
• CPC Class Codes: H01B 13/02 Stranding-up
• CPC Class Codes: H01B 7/0009 Details relating to the conductive cores
• CPC Class Codes: H01B 7/17 Protection against damage caused by external factors, e.g. sheaths or armouring

Abstract

The present invention provides an electrical wire which includes a conductor portion comprising a plurality of element wires being twisted together, and an insulating covering portion disposed over the conductor portion. Each of element wires is formed of aluminum or aluminum alloy material, and has a circular cross-section. The stranding pitch of the element wires is at least three times greater than a pitch diameter of the conductor portion but no more than thirty times greater than the pitch diameter of the conductor portion.

Claims

1. An electrical wire, comprising:

a conductor portion comprising a plurality of element wires being twisted together, each element wire consisting of pure aluminum material and inevitable or unavoidable impurities other than pure aluminum and being formed as a compressed conductor; and

an insulating covering portion disposed over the conductor portion,

wherein a stranding pitch of the element wires is at least three times greater than an outer diameter of the conductor portion but no more than thirty times greater than the outer diameter of the conductor portion.

2. The electrical wire according to claim 1, wherein the stranding pitch of the element wires is at least three times greater than the outer diameter the conductor portion but no more than twenty times greater than the outer diameter of the conductor portion.

3. The electrical wire according to claim 1, wherein the stranding pitch of the element wires is at least five times greater than the outer diameter the conductor portion but no more than fifteen times greater than the outer diameter of the conductor portion.

4. The electrical wire according to claim 1, wherein each element wire has an approximately hexagonal cross-section.

5. The electrical wire according to claim 2, wherein each element wire has an approximately hexagonal cross-section.

6. The electrical wire according to claim 3, wherein each element wire has an approximately hexagonal cross-section.

7. The electrical wire according to claim 1, wherein a first element wire arranged in a center side of the electrical wire has a first diameter and wherein a second element wires arranged on an outer periphery of the first element wire each has a second diameter, as viewed from cross-section.