Planetary gear reducer
US8968148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2011 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Provided is a planetary gear reducer including: a sun gear fixed concentrically to a power input shaft; a plurality of planet gears meshing with the sun gear; a ring gear meshing with the planet gears; a planet carrier configured to support a plurality of planet shafts, each of which is a rotational axis of a corresponding one of the planet gear, and to output revolution of the plurality of planet gears as first power; and a cylindrical support connected to the ring gear, non-rotatable relative to the ring gear, and configured to output rotation of the ring gear as second power. The cylindrical support includes, at one part along the direction of a central axis, a flexible structure which is curved radially inward and has a V-shaped longitudinal section. This configuration improves rigidity and prevents misalignment without increasing the weight of the gear reducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.