Electric motor with rotor, circuit board and improved lead wire connection
US10270318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2013 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Mar 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2211/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor includes: a rotating shaft; a rotor securely attached to the rotating shaft and including a cylindrical magnet portion; a stator formed in an annular shape on an outer peripheral side of the rotor; a board installed above the rotor and the stator with a predetermined air gap therefrom; and a lead wire connected to the board. A connecting portion of the board and the lead wire is formed at a position on an inner side of an axial projection plane of the magnet portion of the rotor above the board. In this electric motor, even when the rotor is increased in diameter, the connecting portion of the lead wire connected to the board can be prevented from being located proximate to an upper part of the magnet portion of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.