| 摘要 |
<p>The device for sealing a pressurised-hydraulic shock absorber tube (1) in which there slides a piston (7) provided with an axial rod (8), comprises a stopper (17), a seal (10), fastening means (19 to 22) and a guide disc (18), the central opening (18a) of which guides the axial movement of the rod (8). The disc has several perforations (24) distributed about a circular path at the bottom of an annular groove (23) made in at least one of the sides of the disc. The side of the disc has two concentric annular bearing surfaces (18b, 18c) separated by the annular groove and intended for the seals. The stopper (17) has a central opening (17a), the diameter of which is greater than the diameter of the rod of the tube so as to define a radial clearance preventing mechanical contact between the stopper and the rod during operation of the shock absorber. The stopper has a circular housing (17b) around its central opening to take part of the seal sandwiched between the stopper and the guide disc. <IMAGE></p> |
