Power tool and control method thereof
US11641170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2021 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Sep 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B23/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power tool includes a motor, a signal switch, a signal detection circuit, a power-on control switch, a first controller, and a second controller. The signal switch is used to switch a power on/off state of the power tool. The signal detection circuit is configured to output a detection signal according to a connection state of the signal switch. The power-on control switch is connected to the second controller. The first controller is configured to control an on/off state of the power-on control switch. When the signal detection circuit outputs a power-off signal, the first controller controls the power-on control switch to be turned off so that the second controller is de-energized and the motor stops rotating. When the power-on control switch still remains on, the second controller controls the switch elements in the driver circuit to be turned off so that the motor stops rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.