Insulated wire and motor
US-2015262732-A1 · Sep 17, 2015 · US
Insulated wire and method of producing the same, and rotating electrical machine and method of producing the same
US10601277B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10601277-B2 |
| Application number | US-201615216093-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2016 |
| Priority date | Jan 22, 2014 |
| Publication date | Mar 24, 2020 |
| Grant date | Mar 24, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An insulated wire in which at least one layer of an insulating material is coated around a conductor, wherein the insulated wire has a part in which relative permittivity is different in a length direction or a circumferential direction in an identical coating layer and a method of producing the same, and a rotating electrical machine and a method of producing the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rotating electrical machine comprising an insulated electrical conducting wire in which at least one layer of an insulating material is coated around a conductor, wherein the insulated electrical conducting wire has a part in which relative permittivity is different in a length direction or a circumferential direction in an identical coating layer, the insulated electrical conducting wire is processed by winding into a coil, and the coil comprises: a slot housing portion to be housed in a slot of a stator core in which the coil is set; and a coil end portion that is not housed in the slot of the stator core, and relative permittivity of an insulted wire coating in the coil end portion that is not housed in the slot of the stator core, is lower than relative permittivity of an insulated wire coating in the slot housing portion that is housed in the slot of the stator core. 2. A method of producing a rotating electrical machine according to claim 1 , wherein the insulated electrical conducting wire is processed by winding into a coil, and the coil comprises: a slot housing portion that is housed in a slot of a stator core in which the coil is set; and a coil end portion that is not housed in the slot of the stator core, and wherein relative permittivity of an insulating material in the coil end portion is lowered either in a step of setting the coil in the slot of the stator core to fix the coil or in a step of assembling the rotating electrical machine thereafter. 3. The method of producing the rotating electrical machine according to claim 2 , wherein the insulating material in the coil end portion that is not housed in the slot of the stator core is foamed. 4. The method of producing the rotating electrical machine according to claim 3 , in which the foaming is performed by the insulating material being penetrated with a gas or liquid, and then foaming the resultant insulating material, wherein the insulating material is covered with a material that is solid and that causes no deformation even at a heating temperature in foaming, and wherein a part not covered therewith has lower relative permittivity in comparison with a part covered therewith.
Assignees
Inventors
Classifications
plastics; resins; waxes · CPC title
Polyamides or polyesteramides · CPC title
Wires with resins · CPC title
and consisting of single conductors, e.g. hairpins · CPC title
by extrusion {(extrusion in general B29C48/00)} · CPC title
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Frequently asked questions
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- What does patent US10601277B2 cover?
- An insulated wire in which at least one layer of an insulating material is coated around a conductor, wherein the insulated wire has a part in which relative permittivity is different in a length direction or a circumferential direction in an identical coating layer and a method of producing the same, and a rotating electrical machine and a method of producing the same.
- Who is the assignee on this patent?
- Furukawa Electric Co Ltd, Furukawa Magnet Wire Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01B7/02. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 24 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).