| 摘要 |
The present shock absorber has a pressure tube (10) with a compression chamber (CC) and a traction chamber (TC), separated by a piston (20) provided with a traction passage (22). The valve comprises: a counter pressure chamber (CPC) loaded by piston (20), provided with an upper opening (51a) and a control base (55), open to the compression chamber (CC), where a hollow sealing plug (60) is displaceable between a closed position, hence communicating traction passage (22) only with the counter pressure chamber (CPC), and open positions; a return spring (65) driving sealing plug (60) to its closed position; and an inertial seal (70), inside the counter pressure chamber (CPC) and displaceable from inoperative position, away from the control base (55), to operative position, where it blocks said base, increasing hydraulic pressure in the counter pressure chamber (CPC) to hydraulically drive sealing plug (60) to its closed position when piston (20) is submitted to a given upward acceleration. |
