Litz wire terminal assembly

Patent metadata

Field	Value
Publication number	US-9564257-B2
Application number	US-201414557936-A
Country	US
Kind code	B2
Filing date	Dec 2, 2014
Priority date	Dec 2, 2014
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A Litz wire terminal assembly includes a wire bundle having a plurality of electrically conductive strands extending between a first end and a second end to define a length. Each strand includes an insulative cover having a proximate cover end at the first end and a distal cover end at the second end. The distal cover end is flush with the second end. The Litz wire terminal assembly further includes a ferrule on the wire bundle. The ferrule has a distal ferrule end at the second end of the conductive strands.

First claim

The invention claimed is:

1. A Litz wire terminal assembly, comprising:
a wire bundle including a plurality of electrically conductive strands extending between a first end and a second end to define a length, each strand including an insulative cover having a proximate cover end at the first end and a distal cover end at the second end, the distal cover end being flush with the second end; and
a ferrule on the wire bundle, the ferrule having a distal ferrule end at the second end of the conductive strands, wherein the distal ferrule end is flush with both the second end of strands and the distal cover ends of the insulative covers, and
wherein the insulative cover extends continuously from the first end to the second end.

2. The Litz wire terminal assembly of claim 1 , wherein the strands are arranged according to a braid pattern that defines a shape of the wire bundle.

3. The Litz wire terminal assembly of claim 2 , wherein the first end of the strands define a proximate bundle end of the wire bundle and the second end of the strands define a distal end of the wire bundle.

4. The Litz wire terminal assembly of claim 3 , wherein the distal end of the wire bundle has a substantially flat cross-section defining a bundle surface.

5. The Litz wire terminal assembly of claim 4 , wherein the shape of the wire bundle is substantially uniform between the proximate bundle end and the distal bundle end.

6. The Litz wire terminal assembly of claim 5 , wherein the distal strand ends define a circumference of the distal bundle end.

7. The Litz wire terminal assembly of claim 5 , further comprising an electrically conductive lug having a lug surface formed against the bundle surface.

8. A method of forming a Litz wire terminal assembly, the method comprising:
forming a wire bundle including a plurality of electrically conductive strands extending between a first end and a second end, each strand including an insulative cover having a proximate cover end at the first end and a distal cover end at the second end, the distal cover end being end being flush with the second end of the strands, wherein the insulative cover extends continuously from the first end to the second end;
forming a ferrule on the wire bundle, the ferrule extending between a proximate ferrule end and a distal ferrule end at the second end of the wire bundle such that an excess portion of the second ends of the strands extend beyond the distal ferrule end, the distal ferrule end being flush with both the second end of strands and the distal cover ends of the insulative covers;
cutting the excess portion to form a substantially flat bundle surface; and
welding the bundle surface to an electrically conductive surface.

9. The method of claim 8 , wherein the strands are arranged according to a braid pattern that defines a shape of the wire bundle.

10. The method of claim 9 , wherein the first end of the strands define a proximate bundle end of the wire bundle and the second end of the strands define a distal end of the wire bundle.

11. The method of claim 10 , wherein the shape of the wire bundle is substantially uniform between the proximate bundle end and the distal bundle end.

12. The method of claim 11 , wherein the shape of the wire bundle is substantially cylindrical.

13. The method of claim 12 , wherein the distal strand ends define a circumference of the distal bundle end.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Karlen Eric
• Horowy John
• Hughes Lawrence D
• Feng Frank Z

Classifications

• H01R43/0263

  for positioning or holding parts during soldering or welding process · CPC title

• H01R4/18

  by crimping {(H01R4/01, H01R4/2495 take precedence; for coaxial cables H01R9/0518)} · CPC title

• H01B13/00

  Apparatus or processes specially adapted for manufacturing conductors or cables · CPC title

• H01B7/306 Primary

  Transposed conductors · CPC title

• H01R4/027 Primary

  comprising means for positioning or holding the parts to be soldered or welded · CPC title