Electric brake system
First Claim
1. An electric brake system comprising:
- a hydraulic pressure supply device configured to generate hydraulic pressure using a piston which is operated by means of an electrical signal that is output corresponding to a displacement of a brake pedal, and including a first pressure chamber provided at one side of the piston being movably accommodated inside a cylinder block and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the piston and connected to the one or more wheel cylinders;
a first hydraulic flow path configured to communicate with the first pressure chamber and provide hydraulic pressure generated in the first pressure chamber to the one or more wheel cylinders;
a second hydraulic flow path configured to communicate with the first pressure chamber and provide the hydraulic pressure generated in the first pressure chamber to the one or more wheel cylinders;
a third hydraulic flow path configured to communicate with the second pressure chamber, branch at the middle of the third hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and provide hydraulic pressure generated in the second pressure chamber to the one or more wheel cylinders;
a sixth hydraulic flow path configured to communicate with the first pressure chamber, branch at the middle of the sixth hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and deliver hydraulic pressure of the one or more wheel cylinders to the first pressure chamber;
a seventh hydraulic flow path configured to connect the sixth hydraulic flow path to the third hydraulic flow path to deliver the hydraulic pressure of the one or more wheel cylinders to the second pressure chamber;
a first control valve provided at the first hydraulic flow path and configured to control an oil flow;
a second control valve provided at the second hydraulic flow path and configured to control an oil flow;
a third control valve provided at the third hydraulic flow path and configured to control an oil flow;
a seventh control valve provided at the sixth hydraulic flow path and configured to control an oil flow;
an eighth control valve provided at the seventh hydraulic flow path and configured to control an oil flow;
a first hydraulic circuit including first and second branching flow paths which branch from the first hydraulic flow path and are connected to two wheel cylinders, respectively, and first and second inlet valves which control the first and second branching flow paths, respectively; and
a second hydraulic circuit including third and fourth branching flow paths which branch from the second hydraulic flow path and are connected to two wheel cylinders, respectively.
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0 Petitions
Accused Products
Abstract
An electric brake system is disclosed. The electric brake system includes a hydraulic pressure supply device configured to generate hydraulic pressure using a piston which is operated by means of an electrical signal and including a first and a second pressure chamber, a first hydraulic flow path, a second hydraulic flow path, a third hydraulic flow path, a sixth hydraulic flow path, a seventh hydraulic flow path, a first control valve provided at the first hydraulic flow path, a second control valve provided at the second hydraulic flow path, a third control valve provided at the third hydraulic flow path, a seventh control valve provided at the sixth hydraulic flow path, an eighth control valve provided at the seventh hydraulic flow path, a first hydraulic circuit including first and second branching flow paths, and first and second inlet valves, and a second hydraulic circuit including third and fourth branching flow paths which branch from the second hydraulic flow path and are connected to two wheel cylinders, respectively.
20 Citations
20 Claims
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1. An electric brake system comprising:
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a hydraulic pressure supply device configured to generate hydraulic pressure using a piston which is operated by means of an electrical signal that is output corresponding to a displacement of a brake pedal, and including a first pressure chamber provided at one side of the piston being movably accommodated inside a cylinder block and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the piston and connected to the one or more wheel cylinders; a first hydraulic flow path configured to communicate with the first pressure chamber and provide hydraulic pressure generated in the first pressure chamber to the one or more wheel cylinders; a second hydraulic flow path configured to communicate with the first pressure chamber and provide the hydraulic pressure generated in the first pressure chamber to the one or more wheel cylinders; a third hydraulic flow path configured to communicate with the second pressure chamber, branch at the middle of the third hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and provide hydraulic pressure generated in the second pressure chamber to the one or more wheel cylinders; a sixth hydraulic flow path configured to communicate with the first pressure chamber, branch at the middle of the sixth hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and deliver hydraulic pressure of the one or more wheel cylinders to the first pressure chamber; a seventh hydraulic flow path configured to connect the sixth hydraulic flow path to the third hydraulic flow path to deliver the hydraulic pressure of the one or more wheel cylinders to the second pressure chamber; a first control valve provided at the first hydraulic flow path and configured to control an oil flow; a second control valve provided at the second hydraulic flow path and configured to control an oil flow; a third control valve provided at the third hydraulic flow path and configured to control an oil flow; a seventh control valve provided at the sixth hydraulic flow path and configured to control an oil flow; an eighth control valve provided at the seventh hydraulic flow path and configured to control an oil flow; a first hydraulic circuit including first and second branching flow paths which branch from the first hydraulic flow path and are connected to two wheel cylinders, respectively, and first and second inlet valves which control the first and second branching flow paths, respectively; and a second hydraulic circuit including third and fourth branching flow paths which branch from the second hydraulic flow path and are connected to two wheel cylinders, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electric brake system comprising:
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a hydraulic pressure supply device including a motor configured to operate in response to an electrical signal that is output corresponding to a displacement of a brake pedal, a power conversion unit configured to convert a rotational force of the motor into a rectilinear movement, a cylinder block, a piston connected to the power conversion unit and movably accommodated inside the cylinder block, a first pressure chamber provided at one side of the piston and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the piston and connected to the one or more wheel cylinders; a first hydraulic flow path configured to communicate with the first pressure chamber and provide hydraulic pressure generated at the first pressure chamber to the one or more wheel cylinders; a second hydraulic flow path configured to communicate with the first pressure chamber and provide the hydraulic pressure generated at the first pressure chamber to the one or more wheel cylinders; a third hydraulic flow path configured to communicate with the second pressure chamber, configured to branch at the middle of the third hydraulic flow path to be connected to the first hydraulic flow path and the second hydraulic flow path, and configured to provide hydraulic pressure generated at the second pressure chamber to the one or more wheel cylinders; a sixth hydraulic flow path configured to communicate with the first pressure chamber, configured to branch at the middle of the sixth hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and configured to provide hydraulic pressure of the one or more wheel cylinders to the first pressure chamber; a seventh hydraulic flow path configured to communicate with the second pressure chamber, configured to branch at the middle of the seventh hydraulic flow path to be connected to each of the first hydraulic flow path and the second hydraulic flow path, and configured to provide the hydraulic pressure of the one or more wheel cylinders to the second pressure chamber; a first control valve provided at the first hydraulic flow path and configured to control an oil flow; a second control valve provided at the second hydraulic flow path and configured to control an oil flow; a third control valve provided at the third hydraulic flow path and configured to control an oil flow; a seventh control valve provided at the sixth hydraulic flow path and configured to control an oil flow; an eighth control valve provided at the seventh hydraulic flow path and configured to control an oil flow; a first hydraulic circuit including first and second branching flow paths which branch from the first hydraulic flow path and are connected to two wheel cylinders, respectively, and first and second inlet valves which control the first and second branching flow paths, respectively; a second hydraulic circuit including third and fourth branching flow paths which branch from the second hydraulic flow path and are connected to two wheel cylinders, respectively; and an electronic control unit (ECU) configured to control an operation of the motor, and opening and closing of the seventh and eighth control valves, the first and second inlet valves, and third and fourth inlet valves. - View Dependent Claims (17, 18, 19, 20)
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Specification