초록 ▼

Disclosed herein is a shock absorber for damping vibration transmitted to a vehicle according to a road state. The shock absorber includes a cylinder and a piston valve disposed within the cylinder and connected to a piston rod to divide the cylinder into a first chamber and a second chamber. The sh

Disclosed herein is a shock absorber for damping vibration transmitted to a vehicle according to a road state. The shock absorber includes a cylinder and a piston valve disposed within the cylinder and connected to a piston rod to divide the cylinder into a first chamber and a second chamber. The shock absorber further includes a hollow chamber formed within the piston rod, a floating piston disposed within the hollow chamber to move up and down and to divide the hollow chamber into upper and lower chambers, first and second orifices formed in upper and lower ends of the hollow chamber and connected to the first and second chambers, respectively, and a resistance changing mechanism configured to cooperate with the floating piston and change a fluid resistance with respect to the floating piston where the resistance changing mechanism cooperates therewith.

대표청구항 ▼

The invention claimed is: 1. A shock absorber comprising:a cylinder;a piston valve connected to a piston rod within the cylinder to divide the cylinder into a first chamber and a second chamber;a hollow chamber formed within the piston rod;a floating piston disposed within the hollow chamber to move

The invention claimed is: 1. A shock absorber comprising:a cylinder;a piston valve connected to a piston rod within the cylinder to divide the cylinder into a first chamber and a second chamber;a hollow chamber formed within the piston rod;a floating piston disposed within the hollow chamber to move up and down and to divide the hollow chamber into upper and lower chambers;first and second orifices formed in upper and lower ends of the hollow chamber and in fluid communication with the first and second chambers, respectively; anda resistance changing mechanism configured to cooperate with the floating piston and change a fluid resistance with respect to the floating piston,wherein the second orifice extends from an inlet at a side of the hollow chamber to an outlet at a side of the second chamber, the floating piston comprises a taper part formed to be inserted into the inlet of the second orifice and an insertion part formed under the taper part, and the resistance changing mechanism comprises a slant part formed at the inlet of the second orifice to have a decreasing cross-sectional area and having a shape corresponding to the taper part.