Electric wire

• US 6,967,289 B2
• Filed: 03/11/2004
• Issued: 11/22/2005
• Est. Priority Date: 03/19/2002
• Status: Active Grant

• Current Assignee: GOTO Electronic Company Limited
• Original Assignee: GOTO Electronic Company Limited
• Inventors: Goto, Yoshihide
• Primary Examiner(s): Nguyen, Chau N.
• Application Number:
  US10/798,695
• Publication Number:
  US 20040168822A1
• Time in Patent Office: 621 Days
• Field of Search: 174/129.R, 174/133.R, 174/94.R
• US Class Current: 174/129.00R
• CPC Class Codes: H01B 7/0009 Details relating to the conductive cores
• CPC Class Codes: H01B 7/30 with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect

Abstract

An electric wire having a conductive portion with grooves on the surface thereof to increase a surface area of the conductive portion for enlarging the skin effect in high frequency current and enhancing the transmissibility and the space factor in high frequency current is provided. The conductive portion 1a being made of an electric conductive material is formed on the surface 1a with a convexo-concave surface 3 to provide predetermined amount of grooves 2 or concave portions 20 having a predetermined section with a predetermined depth W extending in a direction of thickness or toward a center of the conductive portion on the surface of the conductive portion along lengthwise the conductive portion

Claims

1. An electric wire comprising two wire elements, each said wire element including:

a conductive portion being made of an electric conductive material; and

a convexo-concave surface being formed on the conductive portion to provide a predetermined amount of concave portions having a predetermined section with a predetermined depth extending in a direction of thickness of the conductive portion, on the surface of the conductive portion, along lengthwise of the conductive portion, so as to increase skin effect in a high frequency electric current,

wherein the two wire elements are combined integrally to engage the convexo-concave surfaces of said two wire elements mutually,

wherein the cross section of the conductive portion is formed into any shape selected from a group consisting of square, rectangular, trapezoid and any other polygon.

2. The electric wire according to claim 1, wherein the conductive portion is made of any one of a metal selected from a group consisting of copper, aluminum, iron and an alloy of them, plastic with dispersed electric conductive particles selected from a group consisting of metal fiber and carbon black, electric conductive plastic, electric conductive polymeric organic substance, and non-metallic electric conductors.

3. The electric wire according to claim 1, wherein the cross section of the concave portion is formed into any one of rectangular having an elongated vertical side, V-shape, U-shape and trapezoid.

4. The electric wire according to claim 1, wherein the conductive portion is made of any one of a metal selected from a group consisting of copper, aluminum, iron and an alloy of them, plastic with dispersed electric conductive particles selected from a group consisting of metal fiber and carbon black, electric conductive plastic, electric conductive polymeric organic substance, and non-metallic electric conductors, wherein the cross section of the concave portion is formed into any one of rectangular having an elongated vertical side, V-shape U-shape and trapezoid.

5. The electric wire according to claim 1, wherein one said wire element has concave or convex portions of an amount of N and convex or concave portions of an amount of N+1 on at least one of the surfaces of one conductive portion, and the other said wire element, which engages with the one wire element, has convex or concave portions of an amount of N+1 engaging with the concave or convex portions of the one conductive portion and concave or convex portions of an amount of N engaging with the convex or concave portions of the one conductive portion on the surface of the other wire element which corresponds to the surface of the one wire element.

6. The electric wire according to claim 1, 7 or 8, wherein one said wire element has concave portions of an amount of N on at least one of the surfaces of one conductive portion, and the other said wire element, which engages with the one wire element, has convex portions of an amount of N engaging with the concave portions of the one conductive portion on the surface of the other wire element which corresponds to the surface of the one wire element.

7. An electric wire comprising two wire elements, each said wire element including:

a conductive portion being made of an electric conductive material; and

a convexo-concave surface being formed on the conductive portion to provide a predetermined amount of concave portions having a predetermined section with a predetermined depth extending in a direction of thickness of the conductive portion, on the surface of the conductive portion, along lengthwise of the conductive portion, so as to increase skin effect in a high frequency electric current,

wherein the two wire elements are combined integrally to engage the convexo-concave surfaces of said two wire elements mutually,

wherein the conductive portion is made of any one of a metal selected from a group consisting of copper, aluminum, iron and an alloy of them, plastic with dispersed electric conductive particles selected from a group consisting of metal fiber and carbon black, electric conductive plastic, electric conductive polymeric organic substance, and non-metallic electric conductors,

wherein the cross section of the conductive portion is formed into any shape selected from a group consisting of square, rectangular, trapezoid and any other polygon.

8. An electric wire comprising two wire elements, each said wire element including:

a conductive portion being made of an electric conductive material; and

a convexo-concave surface being formed on the conductive portion to provide a predetermined amount of concave portions having a predetermined section with a predetermined death extending in a direction of thickness of the conductive portion, on the surface of the conductive portion, along lengthwise of the conductive portion, so as to increase skin effect in a high frequency electric current,

wherein the two wire elements are combined integrally to engage the convexo-concave surfaces of said two wire elements mutually,

wherein the conductive portion is made of any one of a metal selected from a group consisting of copper, aluminum, iron and an alloy of them, plastic with dispersed electric conductive particles selected from a group consisting of metal fiber and carbon black, electric conductive plastic, electric conductive polymeric organic substance, and non-metallic electric conductors,

wherein the cross section of the conductive portion is formed into any shape selected from a group consisting of square, rectangular, trapezoid and any other polygon,

wherein the cross section of the concave portion is formed into any one of rectangular having an elongated vertical side, V-shape, U-shape and trapezoid.