| 摘要 |
PURPOSE:To make it easy to mount each selector valve and form each passage by disposing at one end of each valve device a pair of communicating holes as both selector valves between a master cylinder and the braking device of each driven wheel, and communicating each communicating hole with the passage of a hydraulic booster. CONSTITUTION:The main body 501 of a hydraulic booster is a cylinder body having a cylinder hole 502 provided therein and two holes 505, 506 each of which is parallel to the cylinder hole 502 are formed in the lower portion of the main body 501. Of first and second selector valves 41, 42 both mounted to the main body 501, one communicating hole 416b of the first selector valve 41 communicates the first hole 505 as a passage to the side of a dumping valve 34 and the other communicating hole 417b of the valve 41 communicates the second hole 506 as a passage to the side of the second selector valve 42. The pair of communicating holes 426b, 627b of the second selector valve 42 are both disposed on the small diameter side of a fixed block whereby the second hole 506 of the main body 501 is used as a passage. |
