Brushless DC motor power tool with combined PCB design
US11031843B2 · kind B2 · utility
3Cited by
72References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Apr 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10151
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power tool with a combined printed circuit board (PCB) that reduces internal wiring of the power tool and provides a large amount of air flow to internal components. In some instances, the combined PCB has a surfboard shape and includes a motor control unit and power switching elements (Field Effect Transistors or FETs). The combined surfboard PCB is located above the trigger, but below the motor and drive mechanism. In other instances, the combined PCB has a doughnut shape and is located coaxially with a motor shaft. The combined PCB may be positioned between a doughnut-shaped control PCB and the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.