Patent ID: 8177037
Filing Date: 2012-05-15
Classification: B60T,F16D

Abstract:
1. A brake system comprising: an electronic control unit (ECU) configured to detect operation of a brake pedal using a sensor and further configured to control braking; a main brake comprising a main caliper which comprises at least one main pad configured to selectively contact a wheel disc, and the main brake being configured to generate a force for holding the wheel disc using a motor that is driven by control of the ECU; a sub-brake comprising a sub-caliper, a solenoid and a sub-wedge, the sub-caliper comprising at least one sub-pad configured to selectively contact the wheel disc at a predetermined position distanced from the at least one main pad, and the sub-brake configured to brake a vehicle in response to a control signal generated by the ECU upon detection of a failure of the main brake; the sub-caliper partly covering the wheel disc, wherein the at least one sub-pad comprises an inner pad and an outer pad; the solenoid configured to be turned on or off by control of the ECU and comprising a rod that is configured to move to apply a solenoid force to the sub-wedge; and the sub-wedge comprising: