Laminated iron core and method for manufacturing same
US10826362B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Apr 28, 2017 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a laminated iron core formed by laminating a plurality of iron core pieces, at least one of an inner circumferential portion or an outer circumferential portion of the iron core piece is provided with a connection recess part which is connected with a connection part of a caulking piece detachable in a radial direction from the connection recess part, an outer circumferential edge of the connection part has the same shape as an inner circumferential edge of the connection recess part, and a bottom portion of the connection recess part is not configured by a single straight line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.