| 摘要 |
<p>PROBLEM TO BE SOLVED: To heighten reliability of a seal member for preventing a hydraulic oil from leaking and to prevent the backflow of the hydraulic oil in a hydraulic pressure control device.SOLUTION: In a hydraulic pressure control device 10, a plunger 78 which linearly displaces under the driving operation of a driving part 14 is incorporated at cylindrical parts 22a and 22b formed at the other end part of a housing 12, and at the plunger 78, slits 86a and 86b in which a guide pin 88 is inserted are formed along an axial direction, and also, a hollow part 84 is formed along the axial direction at its center, and a supply port 40 communicating with a reservoir tank 38 in which a hydraulic oil S is stored and the hollow part 84 communicate via the slits 86a and 86b. Then, through a passage 98 of a piston 92 provided in a displaceable manner at the other end part of the plunger 78, the hydraulic oil S circulates into a filling chamber 32 of the housing 12, and then it is discharged outside from a discharge hole 34.</p> |
