Multiple phase claw pole type motor
US7714475B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 16, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K16/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke portion extending radially outwardly from this claw portion, and an outer peripheral yoke extending from this radial yoke portion in the same direction as the direction of extension of the claw portion; a stator core formed by alternately placing the claw poles in a circumferential direction so that a distal end of each claw portion faces the outer peripheral yoke of an adjacent one of the claw poles; and a stator constructed by sandwiching an annular coil with the adjacent claw poles of this stator core, a multiple phase claw pole type motor characterized in that the claw poles are formed by compacting a magnetic powder and are formed of a magnetic compact having a DC magnetizing property of its flux density becoming 1.7 teslas or more when 10000 A/m of magnetic field is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.