| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a simple structure and low cost in a braking device for a vehicle, and to improve its reliability and security by securing an appropriate braking force even in a defect. <P>SOLUTION: A master cylinder 11 is provided in which a first pressure chamber R<SB>1</SB>, a second pressure chamber R<SB>2</SB>, and a back pressure chamber R<SB>3</SB>are sectioned by movably supporting an input piston 13 and a pressurizing piston 14 in series in a cylinder 12. An oil pressure piping 29 connected to the first pressure chamber R<SB>1</SB>is connected to a wheel cylinder 25FR of a front wheel FR and a wheel cylinder 25FL of the front wheel FL via a master cut valve 33 and a line separation mechanism 34. Meanwhile, electronically controllable pressure control valves 27a, 27b, 27c, 27d are provided. The pressure control valve 27a is connected to the line separation mechanism 34, the pressure control valve 27b is connected to the back pressure chamber R<SB>3</SB>, and the pressure control valves 27c, 27d are connected to wheel cylinders 25RR, 25RL of rear wheels RR, RL. <P>COPYRIGHT: (C)2010,JPO&INPIT |
