Patent ID: 8181751
Filing Date: 2012-05-22
Classification: B60T,F16D

Abstract:
1. A safety braking device of a vehicle, comprising: an electronic control unit (ECU) configured to detect the condition of a vehicle and further configured to control braking of the vehicle; a brake pedal comprising a sensor transmitting a signal representing a pedal effort stroke to the ECU; a motor-based braking unit comprising a motor driven by control of the ECU, and a pad pressing portion coupled to the motor and configured to press a pad toward a wheel disc; a pedal-coupled ball-in-ramp (BIR) operating unit connected to the brake pedal, the pedal-coupled BIR operating unit being configured to pull a cable connected to the motor-based braking unit in response to pressing down of the brake pedal when the ECU detects failure of the motor; and a BIR unit coupled to the pad pressing portion of the motor-based braking unit, the BIR unit being configured to generate axial straight movement force to operate the pad pressing portion in response to pulling force of the cable.