Brake device
AssigneeAdvics Co., Ltd.
InventorsKazutoshi YOGO, Yasunori SAKATA, Shuichi YONEMURA
Life of this patent
Estimating the term…
Abstract
A brake device is characterized by being provided with an auxiliary pressure source 100 that accumulates a predetermined range of brake fluid pressure in an accumulator 102 on the basis of an operation of a fluid pressure pump 101, and that outputs the brake fluid pressure as an accumulator pressure; and an electromagnetic valve 110, 111 that controls blocking of communication between the fluid pressure pump 101 and the accumulator 102 and a main pipe line, and that transmits the accumulator pressure to a wheel cylinder when placed in communication state.
Claims5
1-5. (canceled)
A brake device comprising:
- a brake fluid pressure control actuator having a main pipe line coupling a brake fluid pressure generating means generating a brake fluid pressure in accordance with an operation of a brake operation member with a plurality of wheel cylinders, a differential pressure control valve disposed in the main pipe line, dividing the main pipe line into a first pipe line on the brake fluid pressure generating means side and a second pipe line on the plurality of wheel cylinder sides, and generating a differential pressure to control a differential pressure between the first pipe line and the second pipe line, a motor, and a pump driven with the motor to suck/discharge a brake fluid, controlling a differential pressure between the first pipe line and the second pipe line by controlling the motor and the differential pressure control valve, and controlling a brake fluid pressure generated in the wheel cylinder;
- an auxiliary pressure source accumulating a brake fluid pressure within a predetermined range in an accumulator based on an operation of the fluid pressure pump to output the pressure as an accumulator pressure;
- and
- an electromagnetic valve controlling communication/cutoff between the fluid pressure pump, the accumulator, and the main pipe line to set a communication state so as to transmit the accumulator pressure to the wheel cylinder, wherein
- the brake fluid pressure generating means is a hydraulic booster which receives the accumulator pressure and assists operation force of the brake operation member based on the accumulator pressure to generate a brake fluid pressure, and the electromagnetic valve is set in a communication state in case of emergency.
Dependencies are inferred from the claim text.