Electric parking brake system for a vehicle
First Claim
1. An electric parking brake system for a vehicle comprising:
- a parking brake;
an electromagnetic means operable to apply and release said parking brake;
a command signal producing means adapted to put out a brake application command signal or a brake release command signal to said electromagnetic means;
a switch means adapted to be manually operated to switch the operation of said command signal producing means between a manual brake application and brake release control mode and an automatic control mode;
a power supply circuit having a battery and an ignition power source for supplying power to said electromagnetic means, said power supply circuit being operatively connected with said switch means in a manner such that power is supplied to said electromagnetic means from said battery when said switch means is manually operated to switch said command signal producing means into the manual brake application control mode, and from said ignition power source when said switch means is manually operated to switch said command signal producing means into the manual brake release control mode.
2 Assignments
0 Petitions
Accused Products
Abstract
An improved parking brake system for a vehicle capable of switching the operation of the parking brake between an automatic control mode and a manual control mode at the operator'"'"'s will. The parking brake is applied and released by an electromagnetic device which is controlled by a brake-application command signal and a brake-release command signal produced by a controller. The controller is adapted to be manually switched between a manual brake-application and brake-release control mode and an automatic control mode under the action of a switch. A power supply circuit is provided which has a battery and an ignition power source for supplying power to the electromagnetic device. The power supply circuit is operatively connected with the switch in a manner such that power is supplied to the electromagnetic device from the battery when the switch is manually operated to switch the controller into the manual brake-application control mode, and from the ignition power source when the switch is manually operated to switch the controller into the manual brake-release control mode. With this arrangement, even if the switch is thrown into a position for releasing the parking brake during stoppage of the vehicle on a slope with the parking brake applied, the parking brake is not released but held applied so that accidental starting of the vehicle is positively prevented, whereby safety is improved.
83 Citations
8 Claims
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1. An electric parking brake system for a vehicle comprising:
- a parking brake;
an electromagnetic means operable to apply and release said parking brake;
a command signal producing means adapted to put out a brake application command signal or a brake release command signal to said electromagnetic means;
a switch means adapted to be manually operated to switch the operation of said command signal producing means between a manual brake application and brake release control mode and an automatic control mode;
a power supply circuit having a battery and an ignition power source for supplying power to said electromagnetic means, said power supply circuit being operatively connected with said switch means in a manner such that power is supplied to said electromagnetic means from said battery when said switch means is manually operated to switch said command signal producing means into the manual brake application control mode, and from said ignition power source when said switch means is manually operated to switch said command signal producing means into the manual brake release control mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a parking brake;
Specification