| 摘要 |
A damping force generating mechanism of a hydraulic shock absorber having a piston (8) fixed to the tip of a piston rod (1) in a cylinder (15). A port (7) for flowing a hydraulic oil from an oil chamber (R) to an oil chamber (P) according to the extending operation of the piston rod (1) are formed longitudinally across the piston (8). To provide a resistance to the hydraulic oil flowing out from the ports (7), a damping force generating valve (9) for generating a damping force during the extension is installed on the oil chamber (P) side of the piston (8). A restriction member (14) keeps constant a distance between a nut (13) threaded with the piston rod (1) passed through the piston (8) and the piston (8). The easiness of the assembling and the degree of freedom of the design of the damping force generating mechanism can be secured by disposing the restriction member (14) during its extension on the outside of the damping force generating valve (9).
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