Electric toothbrush and motor device thereof
US10695153B2 · kind B2 · utility
2Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Dec 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor device includes a motor housing, a stator core having at least two poles fixedly installed in the stator housing symmetrically, a coil winding wound around the stator core, and an insulating coil holder for insulating the stator core from the coil winding, and the motor device further includes at least two pairs of magnetic steel structures cooperating with the stator core. All of the magnetic steel structures are fixedly connected to the periphery of the shaft coupling, and the shaft coupling is fixedly connected to the motor shaft. An electric toothbrush having the above motor device is further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.