Patent ID: 11951967
Assignee: HL MANDO CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F  G | IPC B

Claim 0:
1. An electronic brake system comprising:
a reservoir in which a pressurized medium is stored;
an integrated master cylinder comprising a master chamber, a master piston provided in the master chamber to be displaceable by a brake pedal, a first simulation chamber, a first simulation piston provided in the first simulation chamber to be displaceable by a displacement of the master piston or a hydraulic pressure of the pressurized medium accommodated in the master chamber, a second simulation chamber, a second simulation piston provided in the second simulation chamber to be displaceable by a displacement of the first simulation piston or a hydraulic pressure in the first simulation chamber, and an elastic member provided between the first simulation piston and the second simulation piston;
a hydraulic pressure supply device provided to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal;
a hydraulic control unit comprising a first hydraulic circuit provided to control the hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit provided to control the hydraulic pressure transferred to the other two wheel cylinders;
an electronic control unit provided to control valves based on hydraulic pressure information and displacement information of the brake pedal;
a first backup flow path connecting the master chamber and the first hydraulic circuit;
a second backup flow path connecting the first simulation chamber and the second hydraulic circuit;
a first cut valve provided in the first backup flow path to control the flow of the pressurized medium;
at least one second cut valve provided in the second backup flow path to control the flow of the pressurized medium;
an auxiliary backup flow path connecting the second simulation chamber and the second backup flow path; and
an inspection valve provided in the auxiliary backup flow path to control the flow of the pressurized medium.