| 摘要 |
An activation device for a damper includes a stopping tube adapted to be securely received in the piston rod and having grooves defined in a peripheral edge of the stopping tube and first teeth formed on the peripheral edge of the stopping tube, a driving tube adapted to be movably received in the piston rod and in the stopping tube and having second teeth formed on a peripheral edge of the driving tube and a rotating tube adapted to be movably received in the piston rod and having third teeth engaged with the second teeth so that the movement of the driving tube is able to drive the rotating tube to rotate an angle to selectively allow a corresponding one of the third teeth to be received in the grooves such that communication between the axial passage and the space is selectively plugged.
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