ELEMENT WIRE ASSEMBLY AND METHOD FOR MANUFACTURING THE SAME

• US 20160042833A1
• Filed: 04/08/2014
• Published: 02/11/2016
• Est. Priority Date: 04/11/2013
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KAWANISHI, Yoshitomo, MARUYAMA, Daichi, DONG, Shuxin, TAKAO, Hisaaki, URATA, Shinya, OKAMOTO, Atsuto, NAKAI, Hideo
• Application Number:
  US14/782,927
• Publication Number:
  US 20160042833A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B21B 1/166 Rolling wire into sections or flat ribbons
• CPC Class Codes: C21D 8/06 during manufacturing of rods or wires
• CPC Class Codes: C22F 1/08 of copper or alloys based thereon
• CPC Class Codes: H01B 13/0016 for heat treatment
• CPC Class Codes: H01B 5/12 Braided wires or the like
• CPC Class Codes: H01F 41/12 Insulating of windings impregnating or encapsulating of transformers H01F41/005 ; of conductors in general H01B13/06
• CPC Class Codes: H01F 5/06 Insulation of windings

Abstract

A method for manufacturing an element wire assembly includes: a first step of bunching up and rolling or drawing a plurality of circular cross-section conducting wires (1) to shape each of the conducting wires into a polygon in cross section and form the conducting wires (1′) and form a conducting wire assembly (10); and a second step of heat-treating the conducting wire assembly (10) to form an oxide film (2) on the periphery of each of the conducting wires (1′) to form element wires (3) and, form an element wire assembly (20).

Claims

1. A method for manufacturing an element wire assembly comprising:

a first step of bunching up and rolling or drawing a plurality of circular cross-section conducting wires to shape each of the conducting wires into a polygon in cross section and form a conducting wire assembly; and

a second step of heat-treating the conducting wire assembly to form an oxide film on a periphery of each conducting wire and to form the element wire assembly that includes a plurality of element wires each of which consists of the conducting wire and the oxide film.

2. The method according to claim 1, wherein a thickness of the oxide film is 5 nm to 500 nm.

3. The method according to claim 2, wherein the thickness of the oxide film is 50 nm to 200 nm.

4. An element wire assembly manufactured by the method according to claim 1.

5. The element wire assembly according to claim 4, wherein a thickness of the oxide film is 5 nm to 500 nm.

6. The element wire assembly according to claim 5, wherein the thickness of the oxide film is 50 nm to 200 nm.