| 摘要 |
A shock absorber of the kind having an infinitely adjustable damping characteristic comprises a main cylinder containing a piston fixed to a piston rod which extends from the main cylinder and liquid within the cylinder acting on the piston. The main cylinder has openings for the flow from it of the liquid upon movement of the piston in the cylinder and an adjustment device is provided for restricting these openings to provide the adjustment of the damping characteristic. The openings are situated in the peripheral wall of the main cylinder and are axially spaced apart from each other in positions in which they are successively passed over and closed by the piston as the piston approaches the end of its stroke at one end of the main cylinder in a damping movement. Thus the flow of liquid from the main cylinder is progressively further throttled by closure of the openings as the piston approaches the end of its movement. The adjustment device includes an outer cylinder rotatably mounted relative to the main cylinder and at least one arcuate adjustment element consisting of a crescent-shaped section having a surface extending eccentrically relative to the main cylinder and extending over the openings to adjustably vary the flow path through the openings upon rotation of the outer cylinder.
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