| 摘要 |
<p>A shock absorber (100) for controlling the vibration of a vehicle comprising a valve disc (1) for partitioning the interior of a cylinder (40) in which work fluid is sealed, a first channel (2a), a second channel (2b) and a third channel (2c) disposed in series with each other to allow pressure chambers (41, 42) partitioned by the valve disc (1) to communicate, a valve element (10) for selectively allowing the first channel (2a) to communicate with the second channel (2b) by a valve action, a urging member (15) for urging the valve element (10) in a direction of closing the first channel (2a) against the pressure of one pressure chamber (42), and a bypass channel (10a) for allowing the first channel (2a) to communicate with the third channel (2c) when the valve element (10) that has opened the first channel (2a) by being displaced according to the pressure of the one pressure chamber (42) is displaced further to close the second channel (2b), wherein the channel area of the bypass channel (10a) is set smaller than that of the first channel (2a) and the second channel (2b) that are both opened.</p> |
