| 摘要 |
<p>The shock-absorber comprises a cylindrical casing (1) wherein is concentrically mounted a cylindrical body (4) wherein a displaceable hollow rod (7) is associated to a piston (8) with valve means to communicate a compression chamber (9) set between a pressure relief valve (5) closing the lower extremity of the cylindrical body (4) with an extension chamber (10). Thereby, there is provided a fluid compensation in the displacements of the rod (7) with the piston (8) of the shock-absorber when the vehicle runs in holes or over bumps on the road. The shock-absorber includes a solenoid valve to regulate the rigidity of the shock-absorber, the valve body (24) being comprised of a unique part which is obtained from a bush to which is made a wedge-type annular cut with trapezoidal cross-section; the cut is filled with solder of amagnetic material (27); the external and internal surfaces of said body (24) are then machined; the amagnetic material acts as a gap impeding the circulation of magnetic current through the valve body (24).</p> |
