Gear motor assembly and brush motor thereof
US8779645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jan 4, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19623
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gear motor assembly includes a gearbox and a motor mounted to the gearbox. The gearbox includes a gear casing and a worm gear installed in the gear casing. The motor includes a stator, a rotor and brush gear. The rotor includes an shaft, a rotor core and a commutator fixed to the shaft. A worm integrally rotates with the shaft and is meshed with the worm gear. The brush gear includes multiple brushes slidably contacting the commutator, and multiple springs urging the corresponding brush towards the commutator. A lengthwise axis of the brush is inclined to a rotational axis of the commutator with a first angle between 75° to 87°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.