Patent ID: 6401899
Filing Date: 2002-06-11
Classification: B60W,F16H

Abstract:
A parking lock device which locks an output shaft of an automatic transmission of a vehicle according to a change-over of a shift lever to a parking range, comprising:a parking lock mechanism which locks a rotational movement of the output shaft; a sensor which detects a vehicle speed; a sensor which detects the change-over of the shift lever to the parking range; a braking device which brakes the vehicle; and a microprocessor programmed to: determine whether or not the vehicle speed is less than a first predetermined vehicle speed; activate the braking device to decelerate the vehicle when the shift lever has changed over to the parking range at a vehicle speed not less than the first predetermined vehicle speed; and prevent the parking lock mechanism from locking the rotation of the output shaft until the vehicle speed becomes less than the first predetermined speed.