Manufacturing method of insulated wire for electromagnetic forming

Patent metadata

Field	Value
Publication number	US-10672540-B2
Application number	US-201916296224-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Mar 9, 2018
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

In an insulated wire for electromagnetic forming, both of insulation performance and thinning of an insulating member that covers a wire of a coil are realized. A manufacturing method of the insulated wire for electromagnetic forming includes: winding an insulating tape around a wire to insulate the wire by multiple layers of the insulating tape; and winding the insulated wire to form a coil for electromagnetic forming. The insulating tape is wound such that ends of the adjacent insulating tapes on a wire side in a tape width direction do not overlap each other.

First claim

The invention claimed is:

1. A manufacturing method of an insulated wire for electromagnetic forming, the manufacturing method comprising:
winding an insulating tape around a wire to insulate the wire by a plurality of layers of the insulating tape; and
winding the insulated wire to form a coil for electromagnetic forming, wherein
the insulating tape is wound such that ends of the adjacent insulating tapes on a wire side in a tape width direction do not overlap each other.

2. The manufacturing method of an insulated wire for electromagnetic forming according to claim 1 , wherein
the insulating tape is wound while a position thereof gradually moves in a wire longitudinal direction such that the number of winding layers becomes the same at each position in a portion to be insulated of the wire.

3. The manufacturing method of an insulated wire for electromagnetic forming according to claim 2 , wherein
when winding plurality insulating tapes, two insulating tapes of the plurality of insulating tapes having a same tape width are wound such that the number of the winding layers becomes three at each of the positions in the portion to be insulated of the wire.

4. The manufacturing method of an insulated wire for electromagnetic forming according to claim 3 , wherein winding the plurality of insulating tapes comprises winding the two insulating tapes to define an alternating pattern on the wire.

5. The manufacturing method of an insulated wire for electromagnetic forming according to claim 2 , wherein
when winding plurality insulating tapes, two insulating tapes of the plurality of insulating tapes having a same tape width are wound such that the number of the winding layers becomes four at each of the positions in the portion to be insulated of the wire.

6. The manufacturing method of an insulated wire for electromagnetic forming according to claim 1 , further comprising moving the wire during the winding the insulating tape.

7. The manufacturing method of an insulated wire for electromagnetic forming according to claim 6 , wherein moving the wire comprises moving the wire six-ninths of a width of the insulating tape for each winding around the wire.

8. The manufacturing method of an insulated wire for electromagnetic forming according to claim 1 , wherein the insulating tape has a thickness ranging from 0.1 mm to 0.3 mm.

9. The manufacturing method of an insulated wire for electromagnetic forming according to claim 1 , wherein the insulating tape has a width ranging from 5 mm to 20 mm.

Assignees

• Toyota Motor Co Ltd

Inventors

• Yabuoshi Masahito

Classifications

• H01F41/08

  Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores · CPC title

• H01B13/08 Primary

  by winding · CPC title

• H01F5/06 Primary

  Insulation of windings · CPC title

• H01F41/068

  in the form of strip material · CPC title

• H01F41/12

  Insulating of windings ({impregnating or encapsulating of transformers H01F41/005} ; of conductors in general H01B13/06) · CPC title