| 摘要 |
PURPOSE:To step up durability, safety and responsiveness, by installing a normally opened valve, which is opened by pressing force from the outside and expands its volume for decompression, in position between a master cylinder and a braking device, in case of an antilock device. CONSTITUTION:When a second solenoid valve 22 is closed of its circuit as a first solenoid valve 19 is left opened intact, discharged oil out of a pump 18 is fed to an oil chamber C, causing pressing force from the side of the oil chamber C to act on a decay piston 17, and the pressing force from the outside is given to a decay rod 15. With strength of this pressing force, interception of a route ranging from a master cylinder 2 to a braking device 4 and decompression in brake oil pressure take place inside a brake oil pressure control valve 6. Next, when the solenoid valve 19 is closed as the solenoid valve 22 is left closed intact, hydraulic pressure is kept constant whereby the hydraulic pressure can be decompressed and closed with only making the solenoid valve 22 open, permitting of keeping the pressure, thus a decrease in oil quantity inside the oil chamber C causes the brake oil pressure to produce its repressurizing. |
