Electric tool, motor control method, and non-transitory storage medium
US12063007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2021 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Feb 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric tool includes: a motor; an attachment unit to receive a tip tool attached thereto; a drive control unit to control the motor; a number of revolutions detection unit; and a torque detection unit. The number of revolutions detection unit detects a number of revolutions of a first detection target shaft. The torque detection unit detects a load torque of a second detection target shaft. The drive control unit detects, based on the number of revolutions and load torque detected, an unstable behavior of at least one of the tip tool, the first detection target shaft, or the second detection target shaft and either decelerates, or stops running, the motor when detecting the unstable behavior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.