| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle brake device equipped with a pedal stroke simulator capable of obtaining a preferable pedal operation feeling at an initial stage of a brake operation and detecting an abnormality such as an adhesiveness of piston of a master cylinder. SOLUTION: First and second pistons 23, 24 are accommodated in a master cylinder 12 to form a first liquid chamber 35 and a second liquid chamber 36. First and second pedal stroke simulators 17, 18 are connected to the first and second liquid chambers 35, 36. First and second simulator pistons 43, 53 are pushed down based on a liquid pressure generated in the first and second liquid chambers 35, 36 by a slide of the first and second pistons 23, 24 by an operation of a brake pedal 11 to generate a stroke of the brake pedal 11. A liquid pressure in the first liquid chamber 35 at the time when a slide of the first simulator piston 43 is started is set to a lower degree than the liquid pressure in the first liquid chamber 35 at the time when a slide of the second piston 24 is started. |
