| 摘要 |
PURPOSE:To prevent an occurrence of kick-back completely by connecting a normally opened electromagnetic closing valve in parallel with a check valve which is arranged between a master cylinder and an electromagnetic control valve arranged in a main pressure line allowing the above-mentioned closing valve to be opened when a braking fluid flows reversely. CONSTITUTION:An anti-skid hydraulic pressure brake device allows a hydraulic pressure, which is in portion to the depth of a brake pedal 12 depressed, to be produced in a master cylinder 10 permitting the pressure to be transmitted to brake cylinders 18, 20, 26, and 28. And electromagnetic control valves 32, 34, and 74 are arranged within main pressure lines 36, 38, 76, and 78 to the brake cylinders. Here, the electromagnetic control valves enable the hydraulic pressure to be changed over to either a condition allowable for increase in pressure or a condition allowable for decrease in pressure. And check valves 40 and 82 which check the brake fluid flow directed to the master cylinder 12, are arranged in main pressure lines 38 and 78. In addition, normally opened electromagnetic closing valves 30 and 72 are connected in parallel with these check valve 40 and 82. And these electromagnetic closing valves 30 and 72 are allowed to be closed when the braking fluid is suspected to reversely flow from pumps 62 and 92 to the master cylinder 12. |
