| 摘要 |
PURPOSE:To miniaturize several units used in a brake system, and take off the stepping-down fluctuation to a brake pedal during the antiskid time, by integrating a fail-safe system, an antiskid device and a hydrobooster, in one body. CONSTITUTION:A controlling piston 3 has a radial route 3a, through which pressure oil sent from an accumulator 4 is led to the circumferential surface of the inner cylinder, in which the inner end of a push rod 2 is fitted. On the other hand, in the inner end of this push rod 2, a radial route 2a which opens to the circumferential surface of the inner cylinder of said controlling piston 3, is formed. These two-way radial routes 2a, 3a are not connected with each other while the brake is not applied, but they are moved to the mutually confronting position when the push rod 2 moves relatively to the controlling piston 3 according to the stepping-down motion of the brake pedal, positioned as they are connected with each other, and pressure oil is transmitted from the accumulator 4 to the radial route 2a of the push rod 2. |
