Insulated wire, coil, and electrical or electronic equipment

Patent metadata

Field	Value
Publication number	US-10529463-B2
Application number	US-201916299924-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	Sep 13, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

An insulated wire, having:
a single conductor or multiple conductors; an insulating layer on the outer periphery of the single conductor or each of the multiple conductors; and an adhesion layer on the outer periphery of the insulating layer, wherein the thickness of the adhesion layer is 2 to 200 μm, wherein a resin constituting the adhesion layer does not have a melting point, wherein the resin constituting the adhesion layer has a tensile modulus of 0.6×10 7 to 10×10 7 Pa at 250° C., and wherein a substance having 2 or more amino groups exists on the surface of the adhesion layer;
a coil containing the insulated wire; and an electrical or electronic equipment using the coil.

First claim

The invention claimed is:

1. An insulated wire, comprising:
a single conductor or multiple conductors;
an insulating layer on the outer periphery of the single conductor or each of the multiple conductors; and
an adhesion layer on the outer periphery of the insulating layer,
wherein the thickness of the adhesion layer is 2 to 200 μm,
wherein a resin constituting the adhesion layer does not have a melting point,
wherein the resin constituting the adhesion layer has a tensile modulus of 0.6×10 7 to 10×10 7 Pa at 250° C., and
wherein a substance having 2 or more amino groups exists on the surface of the adhesion layer.

2. The insulated wire according to claim 1 , wherein the cross-sectional shape of the conductor is rectangular.

3. The insulated wire according to claim 1 , which has a film layer on the outer periphery of the adhesion layer,
wherein a resin constituting the film layer does not have a melting point, and
wherein the resin constituting the film layer has a tensile modulus of 0.6×10 7 to 10×10 7 Pa at 250° C.

4. The insulated wire according to claim 3 , wherein the insulating layer is coated on the periphery of the single conductor, the adhesion layer is coated on the insulating layer, and the film layer is coated on the periphery of the adhesion layer.

5. The insulated wire according to claim 3 , which is stacked on top of each other to form multiple layers, and has the film layer on the outer periphery of the stacked insulated wire.

6. The insulated wire according to claim 3 , wherein the thickness of the film layer is 10 to 200 μm.

7. The insulated wire according to claim 3 , wherein the film layer contains at least one kind of resins selected from the group consisting of polyetherimide, polycarbonate and polysulfone.

8. The insulated wire according to claim 1 , wherein the thickness of the insulating layer is 30 to 200 μm.

9. The insulated wire according to claim 1 , wherein the total thickness of the adhesion layer and insulating layer is 65 to 330 μm.

10. The insulated wire according to claim 1 , wherein the adhesion layer contains at least one kind of resins selected from the group consisting of polyetherimide, polycarbonate, polysulfone, polyphenylsulfone and polyethersulfone.

11. The insulated wire according to claim 1 , wherein the adhesion layer is porous.

12. The insulated wire according to claim 1 , wherein a crystal melting peak or a crystallization peak of the resin constituting the adhesion layer is not observed in a differential scanning calorimetric analysis.

13. A coil, comprising the insulated wire according to claim 1 .

14. An electrical or electronic equipment, comprising the coil according to claim 13 .

15. A superconducting coil, comprising the insulated wire according to claim 1 .

Assignees

• Furukawa Electric Co Ltd
• Furukawa Magnet Wire Co Ltd

Inventors

• YAMOTO Satoko
• Fukuda Hideo
• Tomomatsu Isao

Classifications

• H02K3/34

  between conductors or between conductor and core, e.g. slot insulation · CPC title

• H02K3/32

  Windings characterised by the shape, form or construction of the insulation · CPC title

• H02K3/30

  Windings characterised by the insulating material · CPC title

• H01B13/14

  by extrusion {(extrusion in general B29C48/00)} · CPC title

• H01B3/427

  Polyethers · CPC title