Multilayer coil, winding method of same, and winding apparatus of same
US7201344B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2006 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Mar 2, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49071
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a multilayer coil which winds “n” wire rods (4) (“n” is an integer number of two or more) in line around a winding core (2) having a cross section of a polygonal shape. An intersection portion (5) is formed on a face where feeding of the winding core is made by feeding the wire rods by an amount of “n” wire rods during a period when the wire rods (4) are wound by one round around the winding core (2), so that the wire rods in a lower layer and an upper layer intersect therein. A twist portion (6) is formed at an end of at least one face out of the faces where the feeding is made, wherein two wire rods out of “n” wire rods are twisted to replace an arrangement of the wire rods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.