Linear motor
US7242117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2005 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Mar 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a linear motor in which the number of armature windings can be reduced, and an armature iron core can be readily fixed to a member for supporting the armature iron core.Each of three inductors 1A to 1C is so arranged that a tooth row 7 therein is located on each side thereof in a width direction thereof orthogonal to a moving direction of an armature 3. The three inductors are arranged spaced apart from each other by a predetermined spacing in the width direction. An armature iron core 9 of the armature 3 includes four magnetic pole portions 15A to 15D and three yoke portions 17A to 17, and is constituted by a plurality of electromagnetic steel plates laminated in the moving direction of the armature 3. The four magnetic pole portions 15A to 15D are arranged in parallel and spaced apart from each other by a predetermined spacing so that each of the three inductors 1A to 1C is positioned within the spacing. Each of permanent magnet rows 11A to 11F is arranged on an opposed surface 21 of each magnetic pole portion. The three yoke portions 17A to 17C extend in the moving direction of the armature 3 and magnetically couples the adjacent two magnetic pole portions 15A …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.