Air spring

Abstract

The invention relates to an air spring (1a) with an elastic air spring bellows (3a), wherein the air spring bellows is tightly connected to an air spring cover (2) at its first open end and to an air spring piston (6a) at its second open end and thereby at least partially encloses a working chamber (4) filled with compressed air, wherein the air spring bellows forms a rolling fold (5) which can roll on the air spring piston (6a), wherein the air spring bellows has a fastening bead (7a) at least at its one end which faces the air spring piston, wherein a radially inwardly extending shoulder region (10a) is formed at the bellows-side axial end of the air spring piston (6a), wherein a conical sealing seat (9a) is formed radially on the inside at the shoulder region, wherein a radially inner sealing face (13a) of the fastening bead bears against the conical sealing seat of the air spring piston so as to seal the working chamber, and wherein the underside (14a) of the fastening bead pointing towards the air spring piston is pushed axially onto the shoulder region of the air spring piston. It is provided according to the invention that an annular piston shoulder attachment (16a) is arranged at the shoulder region of the air spring piston, that the piston shoulder attachment has a radial inner side (19a) which directly or indirectly adjoins the radial outer side (15a) of the fastening bead of the air spring bellows, and that the piston shoulder attachment has a radial outer side (18a) which, at least in the region of its greatest external diameter, adjoins a radial outer contour (12a) of the air spring piston in a radially flush manner.

Dependencies are inferred from the claim text.