Gear shifting apparatus for multi-speed transmission for electric vehicles
US10935132B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 18, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Oct 18, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/0021
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gear shifting apparatus for a multi-speed transmission includes a shifting unit controlling gear shifting by a torque of an actuator and a parking unit controlling a parking state by the torque of the actuator. The actuator includes a control motor transmitting a driving torque to driven gears of the shifting and parking units through a drive gear externally gear-meshed with the driven gears. The shifting unit includes a cam block connected to a first driven gear engaged with the drive gear and having a cam surface on an exterior circumference for shift-stages for controlling gear shifting. In addition, the parking unit includes a parking gear and a parking sprag having an engagement end for controlling engagement and disengagement of a parking state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.