Pneumatic spring i.e. strut, for wheel suspensions of motor car, has supplementary container whose one portion tightly connectable to material-unitary component that is formed by another portion of container and connection line

摘要

The spring (10) has a spring chamber enclosed by a spring pot (20), a rolling bellows (24) and a rolling piston (22), and attached to an external supplementary container (16) over a connection line (46), where the supplementary container forms an additive volume. A first portion (16a) of the container and the connection line together with the spring pot or the piston form a material-unitary component, where a second portion (16b) of the container is tightly connectable to the material-unitary component. The connection line is dimensioned such that the connection line supports the container. The second portion connected with the first portion of the supplementary container is formed as a plastic injection molded part.