Adjustable automotive air spring - is adjusted by varying effective working surface area using tapered supporting cylinder and rolling bellows

摘要

The air spring is particularly for automative use, its spring effort being adjustable independently of the amount of spring movement. Adjustment is by varying the effective working surface area of the spring (1). This can be done by a supporting cylinder(10) tapering where it encloses a rolling bellows (9). The cylinder is moved axially in relation to the spring mounting, causing radial movement of the bellows in relation to the lengthwise axis of the spring. There is also a contoured piston (14) against which the inside of bellows rolls, and which is movable in the axial direction. ADVANTAGE - Rapid adjustment, low power consumption, and low production and installation costs.