| 摘要 |
According to the present invention, a frequency and pressure sensing shock absorber includes: a piston rod of which bottom is placed inside a cylinder; a piston valve connected to the bottom of the piston rod to divide the inside of the cylinder into a compressing chamber and a tension chamber; a housing combined with the bottom of the piston rod in a lower side of the piston valve, and having a pressure space formed inside; a connection passage formed along the inside of the piston rod to connect the tension chamber with the inside of the housing; a sub-valve installed in the bottom of the housing, of which an edge part is penetrated by a main passage, and of which the center is penetrated by a sub-passage; an outer tube installed in the housing, and including concave surfaces formed above and below a convex surface formed along an inner surface; a middle tube installed inside the outer tube, wherein a first phase and a lower changeable passage are separately formed; an inner tube of which upper and lower parts are connected to the connection passage and the sub-passage respectively, and in which a second phase and a lower changeable passage are formed; and multiple free pistons separately installed in the inner tube to be able to elevate, and changing opening states of first and second changeable passages by changing an elevation height depending on the intensity of a frequency delivered through the connection passage. Therefore, the present invention is capable of significantly improving riding comfort by reducing vibrations. |
