| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic booster for brake simple in structure, low in price, and capable of simultaneously operating first and second secondary master cylinders with boosted power. SOLUTION: This hydraulic booster for brake comprises a primary master cylinder M1 having primary and secondary output ports 1f and 1r outputting a hydraulic pressure according to a brake operating input, a hydraulic pressure source 5, a hydraulic oil tank 11 storing hydraulic oil for the hydraulic pressure source 5, a single proportional booster valve V extracting and outputting, from the hydraulic pressure source, a boosted hydraulic pressure according to one output hydraulic pressure of the first and second output ports 1f and 1r of the primary master cylinder M1, and first and second secondary master cylinders M2f and M2r operated by a boosted hydraulic pressure output by the proportional boosting valve V and generating a brake hydraulic pressure for operating first and second wheel brakes Bfa, Bfb; Bra, Brb. |
