| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid pressure shock absorbing technique capable of independently controlling a damping force at each of acceleration and deceleration by a dynamic load without complicating a structure.SOLUTION: In a fluid pressure shock absorber including a tank 10 communicating with an oil chamber B4 via a communication flow path 6 out of an oil chamber A2 and the oil chamber B4 formed separately by a piston valve 3 fixed to a piston rod 1 in an inside of a shell pipe 5, the communication flow path 6 is provided with a pressure dependence valve system 17 in parallel with a base valve 7, and the pressure dependence valve system 17 has such operating characteristics that a braking force is low in an initial stage on an acceleration side and is high in a transition stage to the latter half deceleration side, and operates so as to generate a secured damping force at a stop end in a final phase of a displacement while smoothing an initial displacement of an operational load of a vehicle body or the like. |
