| 摘要 |
The present invention provides a piston valve for a shock absorber capable of adjusting the damping force depending on the frequency band of the impact or shock delivered to a shock absorber while driving as well as depending on the pressure. The piston valve given in one embodiment of the present invention includes: a washer-integrated housing which includes a space inside, an integrated washer, and at least one orifice hole penetrating to the space on one side of the washer; a frequency-dependent valve unit which is installed in the space, includes a free piston for dividing the space into an upper compartment and a lower compartment, and opens or closes the path between the upper compartment and the lower compartment by lifting up or down the free piston; and a main valve unit which is combined to the outer circumferential surface of the washer-integrated housing, divides the inside of a cylinder into an expansion chamber and a compression chamber, and includes multiple paths between the expansion chamber and the compression chamber. |
