Two-speed planetary transmission
US9874275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2016 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jul 26, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2035
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A two-speed automatic planetary transmission, including a sun gear, dual planet gears, a planet carrier, a ring gear, a band-type brake ring, and a locking ring. The locking ring is disposed between the outer surface of the ring gear and the inner surface of the annular lug boss, and the inner surface of the locking ring is fixedly connected to the outer surface of the ring gear. Part of the outer surface of the locking ring contacts with the inner surface of the annular lug boss, and another part thereof is sheathed with the band-type brake ring. One end of the band-type brake ring is a fixed end, and is fixedly connected to a transmission shell; and another one is an unfixed end which is connected to a gear shifting actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.