Canned outer-rotor brushless motor for a power tool
US11757330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Apr 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An outer-rotor brushless direct-current (BLDC) motor is provided including a rotor shaft, a motor housing having an open end and a closed end that supports a first motor bearing, a stator core having an aperture extending therethrough, a stator mount coupled to the open end and including an elongated cylindrical member projecting into the aperture of the stator core and a radial wall that supports a second motor bearing, an outer rotor, and a rotor mount including an outer rim arranged to couple to the outer rotor and an inner body mounted on the rotor shaft. An intermediate bearing is received at least partially within the aperture of the stator core to radially support the stator core relative to the rotor shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.