Electric shift control assembly
US6230577A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jan 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19684
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Shift control assembly for a power transmission device includes an electric drive motor and gear train having an output which is coupled to and bi-directionally rotates a shift rail. The shift rail includes a pair of spaced-apart cam followers. Freely rotatably receiving the shift rail and disposed thereon between the cam followers is a shift fork assembly. The shift fork assembly includes a body having a pair of spaced-apart helical cam surfaces engaged by the cam followers and a fork engaging a shift clutch collar. As the shift rail rotates bi-directionally, the shift fork assembly and clutch collar bi-directionally translate. A circular plate is disposed for rotation with the shift rail and includes an array of apertures. A plurality of sensors are disposed in adjacent, sensing relationship to the circular plate. As the circular plate and shift rail rotate, the sensors generate unique combinations of signals corresponding to a plurality of specific angular positions of the shift rail and translational positions of the shift fork.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.