Brushless motor for a power tool
US10923989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Nov 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2203/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Brushless Direct-Current (BLDC) motor is provided for a power tool, including a stator, and a rotor pivotably arranged inside the stator. The rotor includes a rotor shaft, a rotor lamination stack mounted on the rotor shaft to rotate therewith, and at least one magnet. A bearing is mounted on the rotor shaft to support the rotor shaft. A mount is disposed adjacent the stator along a plane perpendicular to a longitudinal axis of the rotor shaft, the mount having a bearing support member intersecting the longitudinal axis of the rotor shaft and arranged to support the bearing therein. The mount further support hall sensors axially with respect to the rotor, the hall sensors arranged around a circumference of the bearing support to magnetically sense the at least one magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.