Shock absorber.

摘要

A shock absorber has a piston (32) which comprises upper and lower members (48, 50). The upper and lower members are fixedly assembled to define therein the vortex chamber (68, 70). The piston has vertically-extending channels on the periphery (56, 58) thereof to define the vertical section of the vortex passages together with the inner periphery of the cylinder tube.