Pneumatic spring device for a motor vehicle

摘要

The invention relates to a pneumatic spring device for a motor vehicle, including a rolling piston (4), a pneumatic spring cover (5) axially movable thereto, and an interposed elastomer covering as rolling bellows (6) with a trapped compressible air volume. According to the invention, at least one additional spring element (3) is connected in series to the pneumatic spring (2), with a radial bearing (14) of the rolling piston (4) and/or the pneumatic spring cover (5) being integrated as torsion compensation.

主权项

1. A pneumatic spring device for a motor vehicle, comprising:
a pneumatic spring including a rolling piston, a pneumatic spring cover axially movable in relation to the rolling piston, and an elastomer bellows arranged between the rolling piston and the pneumatic spring cover and forming a rolling bellows configured to have a trapped compressible air volume, said rolling bellows being configured as transverse bellows; a cover clamp connecting one end of the rolling bellows to the pneumatic spring cover; a piston clamp connecting another end of the rolling bellows to an end of the rolling piston in facing relationship to the pneumatic spring cover; at least one additional spring element connected in series to the pneumatic spring; and a radial bearing arranged so that the rolling piston is axially movable and rotatable about a bearing axis in the radial bearing and configured to support the rolling piston during its axial movement and its rotation about the bearing axis in the radial bearing and to provide a torsion compensation of the traverse rolling bellows when the additional spring element is compressed and its length is shortened.