Piston for air springs, particularly for vehicle suspensions.

摘要

An air spring comprises a piston (1) whose main body (9) has a working portion (12) tightly and circumferentially engaging a flexible membrane (6) and a base portion (10) secured to a structure (3a) of the vehicle. The working (12) and base (10) portions are interconnected by a substantially cylindrical connection wall (11). An auxiliary wall (13) defining a rolling surface (13a) for a circumferential lobe (8) of the membrane (6) extends from the working portion (12) in a position spaced from the connection wall (11). A hollow space (15) for the thermal exchange communicating with the outside is defined between the auxiliary wall (13) and the connection wall (11). The main body (9), made of plastic material,is connected to the structure (3a) of the vehicle by means of an anchor plate (18) secured to the connection wall (11) portion (10) through a forced inserting at the base . <IMAGE>