Electric vehicle parking lock device control apparatus, adapted to activate electric motor to reduce engagement load between lock gear and pawl upon releasing of lock
US5807205A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1997 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Apr 21, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/901
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling a mechanical parking lock device of an electric vehicle including an electric motor, the mechanical parking lock device including a parking lock gear rotated with a wheel of the vehicle, a parking lock pawl having a lock position for engagement of the lock pawl with the lock gear to lock the wheel, and an unlock position for releasing the lock pawl from the lock gear, and an engaging member mechanically linked with a shift lever, for engagement of the engaging member with the lock pawl to bring the pawl into the lock position upon operation of the shift lever to a parking position, and for permitting the lock pawl to be moved to the unlock position upon operation of the shift lever from the parking position to another position, the apparatus including a parking release intention determining device for determining an intention of a vehicle operator of operating the shift lever from the parking position to another position, and a parking release motor control device, which is operable upon determination of the operator's intention by the parking release intention determining device, for activating the electric motor so as to reduce a load of engagement be…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.