| 摘要 |
<p>The invention relates to a shock absorber (1) comprising a damping cylinder (2) filled with a damping medium and divided into a first and a second damping chamber (C1, C2) by a main piston assembly made up of a first (4) and a second main piston (5). The main pistons, having continuous ducts (9, 10; 13, 14) which are delimited in a direction of flow by first and second flow limiters (11, 12; 15, 16), are mounted on a piston rod (3). The piston rod (3) has an axially extending and continuous cavity (7), through which damping medium is able to flow between a pressurized chamber (6a) of a pressurization reservoir (6) and the respective damping chamber (C1/C2). The damping medium flows via an interspace (8), delimited by the first and the second main piston (4, 5), in the main piston assembly, out into the respective damping chamber (C1/C2) via pressurization ducts (9, 10) delimited by return and compression flow limiters (11, 12). The invention is characterised in that the first and/or the second check valve (11, 12) is open in the initial part of the return or compression stroke (R2, R1), to enable a flow between the respective damping chamber (C1, C2) and the interspace (8) during the first part of the stroke (R2, R1). By enabling an initial flow between the damping chambers, desirable damping properties which, for example, result in a rapid rebound or spring back of the wheel are obtained.</p> |
