Laminated iron core and manufacturing method of laminated iron core
US10170962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jul 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A laminated iron core includes laminated iron core pieces, in which coupling parts are formed so as to communicate in a lamination direction of the laminated iron core pieces, and the coupling parts are filled with resins. The laminated iron core satisfies the following formula: (T×S)/η>{(4×E×δ×w×t3)/L3}×n, where T is a strength (N/mm2) of the resin; S is a cross-sectional area (mm2) of the coupling part or the resin; E is a Young's modulus (N/mm2) of the strip material; δ is a distortion amount (mm) of the iron core piece; w is a width (mm) of the iron core piece in a radial direction; t is a plate thickness (mm) of the iron core piece; n is the number of laminated iron core pieces; L is a distance (mm) between the coupling parts adjacent in the circumferential direction; and η is a safety factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.