| 摘要 |
<p>PURPOSE: To provide a hydraulic master cylinder for hydraulic device having a spring loaded poppet valve, capable of being manufactured easily, and having a non-seized valve disc. CONSTITUTION: A hydraulic master cylinder 1 comprises a body 2 having output chambers 5 and 6 therein. When used, the output chambers are pressurized by a piston 4 moved by a combination of a mechanical input given to an input member 8 with a hydraulic pressure inside a servo-chamber 13 disposed at the rear of a piston 4. A connection part between the servo-chamber 13 and a pressure source is controlled by poppet valves 17 and 18 opened, as necessary, by projections 23 and 24 of a sleeve 22 mounted on the input member 8. When the input member 8 is moved toward the piston 4, the sleeve 22 is rotated to open an inlet valve and, when moved away from the piston 4, the inlet valve is closed and an outlet valve is opened.</p> |
