Patent ID: 6631796
Filing Date: 2003-10-14
Classification: B60T,Y10T

Abstract:
A parking brake system for a vehicle, comprising:a parking-brake-force control mechanism driven by an electrically operated actuator and which is operable to selectively apply and remove a parking brake force to and from a wheel of the vehicle; an automatic-mode selector, manually operable by an operator of the vehicle, to select an automatic mode in which the parking brake force is automatically applied and removed to and from the wheel; a manual-mode control member, manually operable by the operator, to selectively apply and remove the parking brake force to and from the wheel; a first vehicle-state detector that detects a first operating state of the vehicle; a second vehicle-state detector that detects a predetermined second operating state of the vehicle; and a controller that controls the parking-brake-force control mechanism in the automatic mode according to the first operating state of the vehicle to control automatic application and removal of the parking brake force detected by the first vehicle-state detector, controls the parking-brake-force control mechanism in response to an operation of the manual-mode control member to control manual application and removal of the parking brake force even while the automatic application of the braking force is applied, and restricts the automatic control of the parking-brake-force control mechanism in the automatic mode until detection of the predetermined second operating state of the vehicle by the second vehicle-state detector.