| 摘要 |
PURPOSE:To increase reliability under trouble by providing an electric hydraulic pressure regulating means, a brake hydraulic pressure generating means interlocked with a brake pedal, selector valve means, and a solenoid-operated selector valve, and making it possible to supply hydraulic pressure generated in a reaction chamber to a brake device when a hydraulic pressure supplier fails. CONSTITUTION:Modulators 1FR and 1FL as an electric hydraulic pressure regulating means for front right and front left wheel brake devices BFR and BFL and a modulator 1R commonly used for rear right and left wheel brake devices BRR and BRL are positioned in parallel with each other in a common housing 5. An auxiliary hydraulic pressure supplying device 33 is connected to each of the brake devices BFR, BFL, BRR, and BRL in parallel to each of the modulators 1FR, 1FL, and 1R. The auxiliary hydraulic pressure supplying device 33 is constructed of a brake hydraulic pressure generating means 34 interlocked with a brake pedal 32 and a selector valve means 35 connecting or separating a reaction chamber 40 to or from the brake device. Also, a solenoid- operated selector valve V is provided to selectively connect a hydraulic pressure source chamber 49 to either a hydraulic pressure source S or hydraulic oil reservoir T. |
