Speed reducer and robot
US10759047B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jul 4, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H37/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The speed reducer includes: a first sun gear; a second sun gear arranged coaxially with the first sun gear and having a different number of teeth from the first sun gear; a first planetary gear to engage with the first sun gear; a second planetary gear to engage with both the second sun gear and the first planetary gear and having an equal number of teeth to the first planetary gear; and a carrier part to rotatably fix relative positions of shafts of the first sun gear, the first planetary gear, and the second planetary gear and to rotate at a lower rotational speed than the first sun gear. The first sun gear and the second sun gear are rotated in opposite directions at an equal rotational speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.