| 摘要 |
PURPOSE:To eliminate a pump in a hydraulic control for reducing a fitting space by connecting a working liquid supply passage inside the hydraulic control to the way of an oil liquid passage at the upstream side of a choke inside a liquid pressure magnifier body. CONSTITUTION:A staged piston 24 which activates and controls a check valve 24 in a passage extending between a master cylinder 15 and a wheel brake 17 is disposed inside a cylinder casing 20, 21 of a hydraulic control body 2. Passages 28, 29 are communicated via a switch valve 27 to a path C which opens to the casing 21. A spring 30 forces the valve 27 to open the passage 28 and loads the valve toward the passage 29 for closing. The valve 27 is shifted by a coil 31 which is excited in response to a detective signal of a lock detector 33. The passage 29 is connected to a pipe 10 at the suction side of a pump 11. On the other hand, the passage 28 is connected to an upstream opening A1 of a choke 12 in an oil liquid passage A inside a liquid pressure magnifier body 1. |
