Synchronous motor having a permanent-magnet modular rotor
US4684840A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1985 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Jun 18, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Two-pole single-phase synchronous motor comprising an electromagnetic exciter part and a driving unit. The exciter part comprises a stator member having a longitudinal axis and a pair of stator limbs. Each stator limb has a coil thereon and a free end with an end surface. Each end surface being similarly disposable at various angles relative to the longitudinal axis of the stator member. The driving unit comprises, in combination, a rectangular housing, a permanent-magnetic rotor, and a pair of pole-shoe members. The rotor is rotatably journalled in a bearing imbedded in the housing. The pole-shoe member are contained within the housing. Each pole-shoe member has a pole shoe. The pole shoes enclose the rotor inside the housing. The driving unit forms a separate constructional module which is coupled to the exciter part. Each of the pole-shoe members is mounted on a separate one of the end surfaces so that the orientation of the axis of the rotor of the driving unit relative to the longitudinal axis of the stator member is predetermined by the selected prescribed angle of the end surfaces of the stator member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.